2013年12月27日星期五

No power roller conveyor

No power roller conveyor is now eating behavior among the most widely used mechanical transmission equipment, transportation can not only raw materials, but also in the raw material conveying process for different machining process, the finished product packaging. No power roller Telescopic belt conveyor line can also be based on the characteristics of products or extended or shortened, in addition no power roller conveyor can also tilt and turning conveyor material according to the production site. No power roller plastic chain conveyor classification according to different standards in different forms and to classify. According to the production object is moving can be divided into moving assembly line equipment and overhead line equipment; according to the number of varieties, no power roller can be divided into various assembly line equipment and a single species of production equipment.

2013年12月23日星期一

Large angle belt conveyor can be tilted a transport of materials handling equipment

Large angle belt conveyor can be tilted a transport of materials handling equipment, conveyor inclination within the range of 0 ° ~ 90 ° range. By belt conveyor with corrugated wall pallet conveyor  and diaphragms, so this is also known as corrugated sidewall belt conveyor. Large angle inclined conveyor belt conveyor maximum height of up to 203m, the maximum transmission capacity has reached 6000t / h, the maximum vertical Belt conveyor material particle size 400mm. In underground mining engineering, open-cast mining, and large self-unloading peers have adopted, and the first in the country to produce material for a good economic on steel blast furnaces.

2013年12月15日星期日

How to adjust the length of the conveyor belt installation

The conveyor belt , the installation is particularly important. To ensure correct installation of the belt can not only avoid unnecessary defects, and also allows the belt to

work better .
      When installing the conveyor advance Telescoping conveyors for the entire conveyor belt to be installed careful planning calculations, whether new or old belt replacement belt installed ,

otherwise it is likely to cause the situation to take a long conveyor belt , is a direct consequence weight ( weight counterweight ) hit the ground

Led start to slip . Although there was no problem , no problem test , but the position of the lower configuration , running two or three months later , with heavy drooping, hit

the ground when starting . This is Telescopic belt conveyor because the installation process does not take into account the elastic deformation and plastic deformation of the belt . Conveyor

When installing or too short , you should leave a margin for future maintenance. If the length of the minimum basic tension in the spiral . Joint problems after a period of use

, the conveyor belt margin is not sufficient to redo the joints, had to re- install the new belt. This makes our conveyor belt made

Become a go to waste . While enabling enterprises subject to certain unnecessary losses. This is what we want to see the production situation . Ideal conveyor installation is

that after installing the conveyor belt of moderate length ( we should take into account summer and winter temperature differences affect the expansion of the conveyor belt )

It is best to set aside a margin joints , which can effectively prevent the installation length of inappropriate questions .

Use mobile belt conveyors

 Large belt conveyors , conveying distance long , smooth transportation , materials and conveyor no relative motion , less noise , simple structure, easy maintenance , less

energy consumption , standard parts, etc. , belt conveyor is widely used in mining , metallurgy , coal and other departments,

Used to transport loose materials Flexible skatewheel conveyor or items , according to the transport process requirements, can be a single conveyor can also be composed of multiple components or other

transportation equipment horizontal or inclined conveyor system to meet the different needs of arrangement type Telescopic conveyor of operating line . Belt Conveyor , also known as belt conveyors,

conveyor

According to the principles of friction drive belt and exercise , for conveying bulk density of less than 1.67 / t / cubic meter, easy to dig a powder, granular, small block of

low- abrasive materials and bags of materials such as coal , gravel , sand , cement , fertilizer , food and so on. Belt conveyor can be at ambient temperature

Within the range of -20 ℃ to +40 ℃ use , sent the material temperature is less than 60 ℃. The captain and assembly in the form of belt conveyor can be determined according to

user requirements , power transmission roller can also be used with a driving device frame . Belt conveyor is stone, sand production line essential

Equipment !

Introduction roller conveyor

Mainly by the roller conveyor rollers , racks , brackets, drive part and other components , roller , roller conveyor is to rely on friction rollers rotating between the article

and goods to move forward . Their drivers can be divided into non-powered roller conveyors, powered roller conveyor in power roller conveyor

Machine , the driving roller is steel roller conveyor generally not a method using a separate current -driven approach , but using a multi- group drive motor and gear combinations used , then by a

chain drive, belt drive roller to rotate .

Structure: can be divided into flexible conveyor power by driving drum line and drum line without power , according to arrangement can be divided into horizontal conveyor drum line, drum line and

cornering inclined conveyor drum lines . Can also be specially designed according to customer requirements to meet each [ 1 ] [ 2 ] class customer requirements. Standard gauge

drum line

The width of 200,300,400,500,1200 mm and so on. Also can use other special customer needs. Turning drum line standard turning radius of 600,900,1200 mm , etc., customers can

also use other special needs . Drum diameter rollers used straight section 38 ,

50, 60,76,89 mm and so on.

Roller conveyors are the following :

1, the transmission length of the object , the width and height ;

2 , the weight of each conveyor unit ;

3 , the bottom position of the conveyance object ;

4 , any special requirements on the work environment ( for example: humidity, temperature, effects of chemicals , etc. ) ;

5 , conveyors are unpowered motor driven type or style .

To introduce you to the belt conveyor

Also called conveyor belt conveyor or belt conveyor is composed of rhythmic flow line indispensable economic conveying equipment. Ability to belt conveyor belt conveyor into

heavy , medium and light duty belt conveyor powered roller conveyor belt conveyor . Form of the structure can be divided into

Horizontal , climbing , turning, spiral and other forms of transportation . Meanwhile belt conveyor with transport capacity, transmission distance, simple structure, easy to

maintain, easy to implement procedures to control and automation for electronics , hardware , machinery, chemicals , food, forest , mining

Hill , rubber and other industries. Material belt conveyors of a wide range of structural forms . Except for the delivery of ordinary materials , but also to meet the oil, heat

, corrosion-resistant , skate roller conveyor anti-static material handling special requirements . Conveyor is in a certain line continuous conveyor

Materials handling machinery , also known as continuous conveyor. Conveyor can be horizontal, inclined and vertical conveyor can also be composed of the space of the transfer

line , the transfer line is typically fixed. Conveyor transport capacity , long distance , but also in the transportation process while completing a number of process

operations, so

Is widely used. Can be a single conveyor can also composed several other transportation equipment or horizontal or inclined conveyor system to meet the different needs of

arrangement of the operating line . Transportation machinery by works can be divided into: belt conveyors, screw conveyors , bucket elevators

How to maintain the relationship between the roller and the conveyor

Roller conveyor is an important component , the type , quantity , quality idlers direct impact on the quality of the conveyor . Roller conveyor forward rotation resistance and

resistance to the belt conveyor is mainly attributable to the resistance of 50% to 85%. The captain of the belt conveyor heavy duty conveyor over 80m total resistance is calculated , the total

Resistance to attacks such as the length of the conveyor in accordance with the selected charge coefficient , friction coefficient and installation simulation and working

conditions related to the length of the conveyor , carrying the rotating part of the mass per unit length of the branch roller rotating part of the quality return idler unit

length of the branch , conveyor units

Quality , delivery of materials per Power Roller Conveyor unit mass ( and conveyors capacity , material bulk density and tape speed related ) , roller forward friction parameters affecting the

special main drag and friction tape cleaner special additional resistance and so on. Wherein the rotating part of the quality roller bearing unit length of the branch back

Cheng branch roller mass per unit length of the rotating part and the main drag conveyor belt unit mass transport , should take full account of the selected rotational

resistance and conveyor idler indentation resistance , in order to more accurately calculate the tape running resistance .

2013年12月10日星期二

Criteria for the selection of food conveyor belt speed of

    ( 1 ) delivery of large , shipped with a wide , should be selected with a higher speed .

    ( 2 ) long horizontal conveyor , should be selected with a higher speed ; conveyor inclination larger, shorter delivery intervals , the belt speed should be lower .

    ( 3 ) the material is easy to roll , large size , Flat belt conveyor strong abrasive , or simply dust as well as higher demand for sanitation , should use the lower belt speed .

Belt speed and the angle of the line Elevator conveyor bandwidth to transport , material properties , fragmentation and related conveyor when the conveyor transporting up big dip belt speed

should be low ; when the next operation, the belt speed should lower ; horizontal transport , the high belt speed can be selected . taking into account the level of

transportation, short length , the demand for belt speed

Is 2m / s.

Check the location of the material on the conveyor belt

A conveyor belt of deviation and its treatment

Deviation conveyor belt conveyor running is one of the most common faults . There are many reasons for deviation , the main reason is to install low precision and routine

maintenance is poor.

During installation , between the head rubber belt conveyor and tail rollers , the intermediate roller on the same center line as possible , parallel to each other and to ensure that the belt is not

biased or less biased. In addition, the strap connector to the right, should be the same on both sides of the perimeter .

During use , if there is deviation , they have to make the following checks to determine the cause , be adjusted. Incline Belt conveyor Conveyor deviation always check the location and processing

methods are:

1, check the rollers do not coincide with the center line of the transverse conveyor longitudinal centerline . If the values ​​do not coincide more than 3mm, you should take

advantage of the elongated mounting holes on both sides of idlers be adjusted . The specific method is biased on which side of the conveyor belt , which the lateral conveyor

idlers forward

Forward direction or another after the side shift.

2, check the head , tail rack-mounted bearing deviation of two planes values. If the deviation is greater than two planes 1mm, the adjusted response to the two planes in the

same plane. Adjustment of the head drum is : If the conveyor roller deviation to the right , then the right side of the roller bearing should move forward

After moving or left bearing shift ; If the conveyor roller deviation to the left , the left side of the roller bearing should move forward or to the right bearing after shift.

Rear roller adjustment method and the head drum opposite.

3, check the position of the material on the conveyor belt . Material is not centered on the conveyor cross-section , will lead to the conveyor belt deviation. If the material

is biased to the right, then the belt deviation to the left , and vice versa. In should be used as much as possible so that the material in the middle. To reduce or avoid such

conveyor run

Partial increase the blocking plate , change direction and position of the material.

When food is pulled off the conveyor belt conveyor

Tilt grain conveyor , when the belt is pulled off due to an accident , the belt material , and to produce it at the decline clogging . To prevent pulling up the rear of the

conveyor decline required to set traps for broken belt protection. Role trap is broken belt , the automatic action to seize the conveyor belt

The conveyor belt to stop. It therefore requires portable conveyor quick response, there is as small as possible braking time and braking distance. In normal operation the belt conveyor belt is

not worn , no additional resistance , Plastic belt conveyor without reducing the productivity of the conveyor . Material filled extent and reliability of its work without the belt

Conveyor installation angle impact . Trap can be used , such as a wedge and wheel stop mode .

1 ) It is a wedge-shaped trap consists of two rollers mounted on brackets , guide ramps , locking mechanism and glide board composed . When pulled off the conveyor belt ,

detected by the speed sensor , and to disengage the locking device , slide the bracket down the conveyor belt was caught between the wedge and skateboards

. Completion of the conveyor belt arresting work .

2 ) It consists of upper and lower rollers catcher wheel brake , limit switches , spring preload and compression pulley components. The upper and lower sides of the belt brake

wheel grip , which can be rotated about its axis relative to the conveyor belt for rotation without sliding . When broken belt , the conveyor and material gravity is run by

upward

Into sliding down due to the brake drum rotates in only one direction can not be rotated in reverse direction , the brake wheel and the belt slip , slide under the action of

friction , to rotate with the wheel brake lever , two wheel brake soon the conveyor belt grip , played the role of conveyor arrest . In braking delivery

With the same limit switch signals .

Food matching bandwidth conveyor

Food conveyor belt speed transmission capacity and bandwidth proportional , with conveyor belt width, thickness increased, the deviation has been reduced, with a high -speed

desirable values ​​.

 Increase the belt speed , belt conveyor can transport belt conveyor design in the same capacity with a smaller bandwidth conditions , while reducing the load conveyor line , the tension decreases,

the strength of belt conveyor manufacturer lower prices cheaper conveyor can be used. Belt speed is increased, the size and mass of the drive means are correspondingly reduced . Therefore

Improve with speed , reduce the bandwidth of great economic significance. However, with the increase in speed may be raised dust transport , causing material damage to be

shipped , but also in the loading section , cleaning section , etc. to increase belt wear.

2013年12月9日星期一

Impurities adsorbed grain conveyor magnet surface regularly cleaned by hand

Separation of magnetic impurities can be installed as a permanent magnet device in food processing machinery, feed chute , the food conveyor magnet surface impurities adsorbed

by artificial cleaned regularly. May also be a permanent magnet or an electromagnetic drum roller , i.e., a belt conveyor manufacturer non-magnetic roller built in a fixed semi-cylindrical permanent

Long magnet or electromagnetic steel , grain export flows along the surface of the roller , magnetic impurities are adsorbed on the surface of the drum magnet , and with no

magnet drum rotates to the area from falling into the collection container. Separation of colored particles of food ( such as wheat black horn wheat, rice red rice , yellow

Brown rice, etc. ) available portable conveyor optical sorting machine . Each slot machine in the parallel installation of photoelectric sensors, food was fine stream flows through the thin,

narrow slots . When the colored particles flowing through the light zone , its reflective properties procure sensor sends information, and then open the shutter slot at the

bottom of the colored particles discharged

Tablets. This equipment is good, but the production rate. Of rice or brown rice has Mans barnyard barnyard grass can be electrostatic machine, food was uniformly thin layer into

the machine , there are tares due to the polarization properties of mango in a strong electrostatic field significantly biased side of the machine to be ranked outside the

machine .

Separated by flow characteristics using food particles and impurities suspended in the airflow velocity size separation . Fan belt hand cars and winnowing machines are winnowing

the application of this principle when artificial . Winnowing machine cycle can be used to clear the food shown in the light impurities . Food and feed through the hopper

Air flow evenly into the roll , drop to the bottom by a screw conveyor discharge machine , the impurities were carried by the suction duct airflow into the dust chamber ,

settling in the end portion of the rear by another screw conveyor from the plane , the air back into the blower continue recycling

Selection of Grain conveyor power devices

    1 heat problem

    Cooling grain conveyor power devices probably accounted for the entire amount of heat inverter in general, it has a Belt conveyor direct impact on the life of the drive , thereby

affecting the life of the conveyor length .

    2 . Electromagnetic Compatibility

    The main drive control circuit and the main circuit composed of two parts , the main non-linear switching circuit , the inverter itself so that the harmonic interference.

The control circuit of belt conveyor design the inverter is a weak signal , small energy circuit , so the drive can not be vulnerable to interference caused workers

Made . Therefore , to solve the interference problem of electromagnetic compatibility is a key technology explosion proof inverter working properly .

    3 Selection issues of power devices

    1140v is unique to China's coal industry, a voltage level , while not currently on the market for constant torque load start and speed control 400kw/1140v mine explosion-

proof inverter products. Therefore, the selection of the power device drive is also an important research work

.

    4 . Proof housing design

    Explosion-proof enclosure is designed to take into account the heat , explosion-proof structure, and electromagnetic compatibility and other technical requirements.

Selection of food conveyor lubricants and additives

1 . Ensure the quality of assembly . Can be purchased or homemade when some special tools, gear parts removal and installation , try to avoid tapping with a hammer and other

tools ; replace the gear , when worm , heat exchange manufacturers try to use original parts and replace in pairs ; assembly output shaft , pay attention tolerances

; Difficult to use when dismantling anti-adhesive or red lead oil to protect the hollow shaft , with the area to prevent rust or wear debris, repair.
2 . Lubricants and optional additives . Worm air to water heat exchanger gear reducer 220 # gear oil is generally used for heavy-duty , start frequently, poor environment reducer, can use some lubricant

additives, so that when you stop running gear gear oil is still attached to the gear surface, forming Paul

Protective film to prevent direct contact between the metal heavy load , low speed , high torque and starts. Additives containing modifiers and anti- leak seal agent , so seals

remain soft and flexible, reduce oil leakage.
3 . Select reducer installed. Lower position allows, try not to use vertical installation . When installed vertically , install a lot more than the level of the amount of oil

added , could easily lead to fever reducer and oil spills.
4 . Establish lubrication maintenance system. According lubrication "five " principles of gear maintenance , so that each person has a responsibility gear regularly checked and

found significant temperature exceeds 40 ℃ or oil temperature exceeds 80 ℃, the quality of the oil or oil drops copper is found in more

When and generate abnormal noise and other phenomena, to immediately stop the use , timely maintenance , troubleshooting , replacement of oil . When refueling , pay attention to

the amount of oil , to ensure correct gear lubrication .

Requirements shaftless screw conveyor

1 shaftless screw conveyor when no load should start , that no starting material in the cabinet after the start before automated sorting machine being fed to the conveyor .
2 When the initial feed conveyor , should be gradually increased. Feeding capacity until delivery of the rated capacity , feeding should be uniform, or likely to cause transport

of materials product plugs, hot water heat exchanger drive overload , so that the entire conveyor damage.
3 In order to ensure that no-load starting conveyor requirements , before stopping the conveyor should stop feeding, conveying the material in the cabinet to stop completely

before transporting finished running.
4 materials shall be transported in the bulk material mixing hard to avoid the death spiral card damage conveyor
5 regular testing work in the use of various parts of the state conveyors , attention is loose fasteners , if found loose parts . Should immediately tighten the screws , so that

re strong.
6 conveyor cover should not be removed while the machine is running, in order to avoid accidents.

General conveyor design

1 , parts of all equipment will be in strict accordance with national standards for the design , processing and production , to meet users ' various tender technical

requirements and process requirements , and comply with the laws on production safety , environmental protection, check weighers fire protection and other aspects of the country , regulations

and industry standards.
2 , parts of all equipment using advanced and reliable processing equipment and manufacturing technology, has a good surface geometry and appropriate tolerances meet GB/T1804

standard ; examine all purchased Weight Sorter materials , component parts in strict accordance with the ISO9001 quality control program execution ; provided

All parts have good interchangeability, easy to install , adjust and repair ; able to ensure the safety of equipment , continuous and stable operation.
3 , the main components of all equipment such as rollers , drives, rack , roller and so completely by the quality assurance system in the test specifications for testing and

production, guarantee to provide users with the most satisfactory products.
4, the unit of measurement using Chinese legal units of measurement .

Screw Use and Selection Considerations

Caution:
Screw not transport perishable , viscous , easy caking materials because these materials at the time of delivery food metal detector will be bonded to the helix , and subsequently rotated without

moving the plot forward Pharmaceutical metal detector or materials formed in the hanging bearing plug, but it does not work .
Selection Notes :
Given the range of applications and features screw conveyor , the user at the time of selection, should be considered according to the environment and transportation of

materials , the balanced, reasonable selected in order to avoid unnecessary trouble and loss.

Belt conveyors can be economical and effective delivery of various materials

Components:
Mainly from the rack , pallet conveyor conveyor belts, roller belts , a tension means transmission device and other components. The body is made of high quality steel connections from the front

and rear chassis leg height difference , Airport conveyor the plane was inclined at an angle . Rack- mounted belt roller , roller , etc., used to stimulate and support

Order of the conveyor belt . There gear motor drive and electric drum -driven in two ways.
Advantages :
In industrial production , belt conveyor can be used as production constitutes a link between the continuous production of machinery and equipment in order to achieve continuity

and automation of production processes , improve productivity and reduce labor intensity , with a transport capacity, simple structure, easy maintenance , excellent standardized

components

Point .

Failures and approach conveyor belt

Conveyor belt Common Cause analysis and treatment of the conveyor belt can be used as the transport machinery has been widely used in coal , grain, flour mills and other

industries. Can transport bulk material ,belt conveyor design  the material can be transported in bags . Users when installing and using such equipment, often out

Now some of the belt conveyor manufacturer cause of the malfunction is not clear , not much processing methods. In this paper describes the causes and treatment of common faults such equipment . A

conveyor belt conveyor belt slippage and solutions in operation , slipping for many reasons , common causes and solutions are:

1, the initial tension is too small. Leave the tension roller conveyor at the inadequacy of the conveyor belt slippage. This situation generally occurs at startup , the solution

is to adjust the tensioning device , increasing initial tension . 2 , the friction between the drive roller and the conveyor belt is not enough cause skidding. Its not original

Mostly due to water or humid environment on a conveyor belt. The solution is to add some rosin on the end of the drum . But be careful not to hand dosing , and the application

of the blast blowing equipment to avoid personal injury . 3 , the rear roller bearing is damaged or does not turn up and down roller bearing damage does not turn too much.

Cause of the damage is too much tail drifting without timely maintenance and replacement of damaged parts or rotation is not flexible , so that increased resistance caused by

skidding. 4 , starting too fast can also form slip. At this point may slow start . Such as the use squirrel cage motor, then start jogging twice

, The slip phenomenon can be effectively overcome . 5 , the belt load is too large, more than the motor capacity will slip. The upside is that this time slipping motor plays a

protective role. Otherwise, a long time the motor will be burned. But for running it is slipping accidents. Overcome conveyor

Slipping , slipping the first to find the reason , before taking effective remedial measures . Second, the deviation and its handling conveyor belt conveyor belt running

operation is one of the most common faults . There are many reasons for deviation , the main reason is to install low precision and routine maintenance

Poor maintenance . During installation , between the head and tail rollers , the intermediate roller on the same center line as possible , parallel to each other and to ensure

that the belt is not biased or less biased. In addition, the strap connector to the right, should be the same on both sides of the perimeter . During use , if there is deviation

, they have to make in order to

Check to determine the reason for adjustment . Conveyor deviation always check the location and processing methods are: 1, check the lateral misalignment roller conveyor belt

centerline longitudinal centerline . If the values ??do not coincide more than 3mm, you should use both sides of the elongated idlers Ann

Mounting hole to be adjusted . The specific method is biased on which side of the conveyor belt , which the lateral direction of the conveyor belt idlers advancing forward, or

the other side of the shift. 2, check the head , tail rack-mounted bearing deviation of two planes values. If the deviation is greater than two planes 1mm, then respond

Adjusting the two planes in the same plane . Adjustment of the head drum is : If the conveyor roller deviation to the right , then the right side of the roller bearing should

move forward or left bearing setback ; If the conveyor roller deviation to the left , then the left side of the roller bearing should move forward

Or after the shift to the right bearing . Rear roller adjustment method and the head drum opposite. 3, check the position of the material on the conveyor belt . Material is not

centered on the conveyor cross-section , will lead to the conveyor belt deviation. If the material is biased to the right, then the belt deviation to the left , and vice versa

Ran . In should be used as much as possible so that the material in the middle. To reduce or avoid such blocking plate conveyor deviation increase , change direction and

position of the material.

Stainless steel mesh belt conveyor

A stainless steel mesh belt conveyor line metal mesh belt conveyor , using wire mesh belt prepared for the carrier , in the middle on both sides wear pin connection with the

installation of the chain , heat exchange manufacturers allowing the use of a chain sprocket chain conveyor belt along the direction Sports ; also directly with a special plastic bag roller to

Direct drive with Network for the former are generally applicable to materials heavier and longer length delivery form , used for cooling , drying and other requirements of the

transportation industry , air to water heat exchanger and therefore the density of the network with a more dilute , which generally use a relatively dense mesh belt for smaller transport materials or

special short distance

Special transport object , such as a belt conveyor of a ferromagnetic material . Heavy mesh belt conveyor is generally no longer than 15 meters, a width of not more than two

meters ; lightweight stainless steel mesh conveyor belt length is generally not more than 10 meters .
We can use Teflon mesh conveyor belt at the time of delivery of the high temperature and density of the mesh belt also ( 2 * 2, 4 * 4 ) optional temperature from -10 degrees

Celsius to 200 degrees Celsius , as Teflon mesh belt softness and therefore will not damage the material of choice for a special delivery of the ambient temperature

2013年12月3日星期二


Shaftless screw conveyor
Overview: shaftless screw conveyor screw conveyor , compared with conventional shaft , the use of non- central axis design, the use of steel as a whole has a flexible auger

materials.
Features:
1 anti-winding and strong: no center axis interference , the conveyor belt -like, easy to wound materials have special advantages.
2 good environmental performance : The fully enclosed screw conveyor and easy to clean surface , to ensure environmental Airport conveyor health and the delivery of materials from contamination

, do not leak.
3 large torque , low energy consumption : As shaftless spiral , material clogging, the discharge opening is not blocked, and thus at lower speeds , smooth transmission, reducing

energy consumption. Torque up to 4000N · m.
4 transmission capacity : Throughput is the same as 1.5 times the shaft diameter conventional screw conveyor .
5 long distance transport : single conveyor lengths up to 60 m . According to user needs , the use of multi-stage series -mounted , ultra- long-distance transportation of

materials .
6 can maneuver to work .
7 . Either beneath the material , automatic checkweigher but also ends the material.
8 using a special lining , can work at high temperatures.
9 compact , space-saving , good looks , easy to operate , economic and durable.

Conveyor classification

Cushion belt conveyor
The hovercraft cushion belt conveyor , conveyor transplanted to the hovercraft principle , the use of continuous flow beneath the conveyor belt to form a stable cushion layer

becomes hard friction roller rolling soft belt conveyor design fluid friction , which reduces the friction , and old-fashioned delivery machine compared with less investment, consumption

Can province , carrying capacity, smooth operation , less easy to seal contamination , and low maintenance costs , can significantly improve productivity, reduce production

costs, economic and social benefits are very impressive.
Cushion belt conveyor is widely used in ports , mining, food and other industries.
Tubular belt conveyor
Overview: tubular conveyor belt conveyor manufacturer suitable for transporting a variety of complex terrain conditions for a variety of bulk materials 0-2.5t/m3 density , using ordinary tubular tape

Operating ambient temperature range -25 ~ +40 ℃; tubular belt typical material conveyors are: ore , coal coke,

Limestone, gravel, shale and alluvial soil .
Uses: tubular belt conveyor is widely used in electricity, building materials, chemicals , mining, metallurgy , port, harbor , coal, grain and other industry material handling

systems .

The new principle of pneumatic diaphragm pumps and transport machinery for occasions

Membrane pump is a new type of transportation machinery , is currently one of the most innovative pumps . Using compressed air as a power source for a variety of corrosive

liquid with particles , high viscosity , belt conveyor design volatile, flammable, poisonous liquid can be pumped exhaust . Its pneumatic diaphragm

There are four kinds of material: plastic , aluminum , cast iron, stainless steel. Diaphragm pumps were used NBR, neoprene , Viton , PTFE , depending on the liquid medium , poly

vinyl forty-six . To meet the needs of different users . Placed in a variety of special occasions , normally used for pumping species

Suction pump can not belt conveyor manufacturer regulate the media , have achieved satisfactory results.
A pneumatic diaphragm pump for occasions
Because of pneumatic diaphragm pumps with the above characteristics , so diaphragm in the world since the birth of the pump is gradually into other markets , and some of them

occupied . Such as: painting, ceramics in the diaphragm has an absolute dominance , while in some other industries, such as

Environmental Plastic belt conveyor protection, water treatment, construction , sewage, Fine Chemicals is expanding its market share , and has other pumps irreplaceable . Pneumatic diaphragm

advantages:
1, due to air powered , so flow with backpressure ( outlet resistance ) to automatically adjust to changes , suitable for high viscosity fluids . The centrifugal pump operating

point is water as a benchmark to set a good , if slightly higher viscosity of the fluid, you need to complete reducer or frequency modulation

Speed ​​control , the cost will be greatly improved , the gear pump is the same .
2 , an explosive environment using reliable and low cost pneumatic pumps , such as fuel , gunpowder, explosives transport because: first , it is impossible to produce a spark

after grounding ; Second , the work is no heat generated , the machine does not will overheat ; third , the fluid does not overheat because the diaphragm

Fluid agitation minimum .
3 , at the site of bad places, such as wastewater construction sites, mines , because the sewage impurities and are complicated, easy to plug the pipeline , so that the pump on

form load is too high , the motor heat vulnerability . Pneumatic diaphragm pump can flow through the particle and adjustable tube

Automatically stop when the road to clear blockage .
4 , another small diaphragm easy to move , no foundation , representing the ground is extremely small, easy to install and economical. Materials can be used as portable pump .
5 , there is hazardous , corrosive material handling , the diaphragm material can be completely separated from the outside world .
6 , or the number of tests to ensure that no foreign material contamination .
7, can be used to transport fluids relatively unstable chemical nature , such as : a photosensitive material , such as flocculation liquid . This is because the low- shear

diaphragm little physical impact on the material.
Second, the working principle of pneumatic diaphragm pumps
1 , compressed air powered .
2 , is a deformation caused by the reciprocating diaphragm pump volume change of volume , it works similar to the piston , due to the characteristics of diaphragm pump works ,

so diaphragm pump has the following characteristics : ( 1 ) the pump does not overheat : Compression air as the driving force in the expansion of the exhaust is an endothermic

Process , when the pneumatic pump operating temperature is lowered , no harmful gas emissions. ( 2 ) does not have a spark : pneumatic diaphragm pump without electricity for

power, ground and then prevent static sparks ( 3 ) through a liquid containing particles : Because the volume of imports and ball type work , it is not easy

Blocked . ( 4 ) low shear force on the material : how work is sucked into how vomit , so a minimum of agitation materials for the delivery of unstable substances ( 5 ) flow can

be adjusted , can be installed at the outlet section of the material valve to regulate the flow . ( 6 ) having a self-absorption function. ( 7)

In the dry run , without danger . ( 8 ) can dive work . ( 9 ) can be transported very fluid range from low viscosity to high viscosity , obtained from the viscous resistance . (

10 ) There are no complicated control system, no cables, fuses, etc. . ( 11 ) small size, light weight , they

Mobile . ( 12 ) without lubrication so maintenance is simple and does not pollute the working environment due drip . ( 13 ) pump will always be able to maintain efficient , not

because of wear and tear is reduced. ( 14 ) 100% of energy use , when to close the outlet , the pump automatically shut down, moving equipment , wear and tear, overload, fever

( 15 ) There is no dynamic seal , easy maintenance to avoid leaks. Work no dead spots .

Transportation machinery for use by end-use can be divided into sub

1 , bulk material handling machinery ( such as: conveyor screw conveyor bucket elevator steep conveyor , etc.)
( 1 ) by a drive belt conveyor conveyor belt tensioning device composed of the central frame and roller conveyor as traction
And bearing member , whereby heat exchange manufacturers continuous conveyor catechesis materials or chemicals into pieces .
A friction drive conveyor transported materials in a continuous mechanical . Applications it can be material in a
Given conveyor line , from the initial point to feed the final discharge point between the formation of a material transport processes . It can
Conveyed granular materials , can also be transported into pieces items. In addition to the purely material handling , but also can
And request the production process of industrial enterprises in the process of cooperating to air to water heat exchanger form a rhythmic flow transport line . The
Conveyor is widely used in a variety of modern industrial enterprises .
Underground tunnel in the mine , mine ground transportation systems , open pit and concentrator , the widely used transmission belt
Sending machine . It is used for horizontal or inclined transportation transport .
Universal conveyor from the conveyor belt, roller , roller and drive , brake , tension , bend , loading, unloading,
Cleaning and other equipment components.
① conveyor
There are two commonly used with rubber bands and plastic . Rubber band applied between the working environment temperature -15 ~ 40 ° C. Matter
Material temperature does not exceed 50 ° C. Transported upward inclination of Granules 12 ° ~ 24 °. For large transmission angle tread rubber available
Tape. Plastic belt with oil, acids, alkalis , etc., but for the poor adaptability to climate , slippery and aging. Bandwidth
Is the main technical parameters of belt conveyors.
② roller
Of single drum ( tape wrap angle on the drum 210 ° ~ 230 °), double drum ( wrap angle of 350 °) and multi- roll
Tube ( for power ) and so on. There grooved rollers , flat -shaped roller , spherical roller, roller buffer . Trough roller ( from 2
~ 5 rolls composition ) supporting bearing branches for conveying granular materials ; aligning to adjust the lateral position of the belt idler
Avoid deviation ; buffer roller mounted in place by the material in order to reduce the impact of the band 's material .
③ drum
Minute drive rollers and idler pulley . Drive rollers of the main power transmission member . Of single drum ( tape on the drum
The wrap angle of 210 ° ~ 230 °), double drum ( wrap angle of 350 °) and multi- cylinder ( for power ) and so on .
④ tensioning device
Its role is to enable the belt to achieve the necessary tension to prevent slipping on the drive roller, and to the conveyor belt between the roller
Deflection guarantee within the specified range.
Conveyor technology advantages
The first is its reliable operation. In many important production units require continuous operation , such as the transport of coal power plants ,
Conveying bulk materials steel mills and cement plants , as well as loading and unloading of ships in the harbor , are using belt conveyors . As described in these
Occasion shutdown , the loss is huge. When necessary, the belt conveyor can take a class to a group of continuous work .
Conveyor low power consumption . As the material with almost no relative movement of the conveyor belt , not only the running resistance is small (
Scraper conveyor is approximately 1/3-1/5 ) , but also for cargo wear and crushing are small , high productivity . These are favorable
In lower production costs.
Transport conveyor line adaptable and flexible. Line length according to the need. As short as a few meters long can be
Up to 10km or more. Can be installed in a small tunnel above the ground can also be set up in the traffic chaos and danger areas.
According to process requirements , can be very flexible conveyor from the feed point or points by . You can also point to multi-
Several sections or unloading . When simultaneously at several points on the conveyor belt to feed ( such as conveyors preparation plant coal bunker under ) or along the belt
When the longitudinal direction of the conveyor according to any point on the device by feeding a uniform feed to the conveyor , the belt conveyor becomes a
The main transportation trunk .
Reclaimer conveyor can stockpile coal field in the reservoir below the lane when needed , but also the different materials for each heap
Mixed. Material may be simply discharged from the head of the conveyor , can also be moved or plow unloader unloading the transport vehicle
Either with the longitudinal direction of the discharge point .
( 2 ) , commonly known as the auger screw conveyor for granular or powdered material transport level , inclined conveyor , vertical
Other forms of transportation . Transmission distance varies according to deformity , usually from 2 meters to 70 meters .
Transport principles : rotating spiral blades will be the passage of the screw conveyor transported materials . Screw so that the material does not lose
Together rotating blade force is sending its own weight and the screw conveyor enclosure materials for friction materials .
Features: Screw rotating shaft is welded helical blade , blade type , depending on the surface transportation of materials have
Solid surface type , belt face, the blade surface type and other types. Screw terminal helical axis in the direction of movement of materials have
Thrust bearings with material to spiral axial reaction force , the longer the captain , should be added to the intermediate hanger bearings .
There are two pairs of screw conveyor is welded to the screw conveyor shaft of rotation of the rotary blade . Plainly, that is
The organic combination of two screw conveyor , consisting of a screw conveyor .
Screw rotation shaft rotation determines the conveying direction of materials, but generally are designed screw conveyor
Is designed according to the individual rotating conveyor blade . When the reverse transport , will greatly reduce the life of the conveyor .
( 3 ) the use of bucket elevator traction evenly fixed on the endless series of hoppers member, vertical material lifting
Continuous conveyor machinery.
Bucket elevator with throughput , high lifting height , stable and reliable operation and long life significant advantages, its main
Performance and parameters meet JB3926 ---- 85 " vertical bucket elevator " ( referring to the standard equivalent to international standards and foreign
Advanced standards ) , traction ring chain meets MT36 ---- 80 " high-intensity ring chain Mine " , the elevator for conveying powder
Like, non-abrasive and abrasive small and small block granular materials , such as: coal , cement, stone , sand , clay, ore
Stone, because the agency is traction hoist ring chain, thus allowing higher temperature materials transport ( material temperature does not
超过250 ℃). General transport height up to 40 meters.

2013年12月1日星期日

What is a screw conveyor

      In daily industrial production , we will often use screw conveyors , screw conveyors what is it ? Today we have belt conveyor design for you to explain :
Screw conveyor and auger conveyor is called , is mainly used in conveying powdery or granular materials , including the level of the transport conveyor , inclined conveyor ,

vertical transportation belt conveyor manufacturer and other forms. Transmission distance varies according to deformity , usually from two meters to seventy meters .
      The above is a brief description of the screw conveyor , I hope you have help.

China conveyor network for you to explain the history of the conveyor

     In order to make better use of conveyors, today we explain to you about the history of the conveyor :
1868 appeared belt conveyor in the UK ;
1887 Screw appeared in the United States ;
Appeared in 1905 in Switzerland, the steel belt conveyor ;
In 1906 there has been inertia conveyor Britain and Germany.
Since then , the conveyor motor manufacturers heat exchange manufacturers affected by mechanical , chemical and metallurgical industry technological progress , and air to water heat exchanger constantly improve gradually from the

completion of the internal transport workshop , developed to be completed within the enterprise and between the city and even the material handling business, become material

mechanized handling systems and

Automation indispensable component.
High drum overturned cars and put water in ancient China , is a modern bucket elevators and scraper conveyor prototype ;
17th century , began to apply ropeway transport of bulk materials ;
The mid-19th century , a variety of modern structures conveyor has emerged.
       These are the historical development of the conveyor , we want to help.