Cushion bar conveyor system in power plant operation in the practice
Initially when used in feed point bump arcs by using rollers, dumper lower impeller to the coal by the strip length, silos, the subject material with multi-point and fixed-plow
unloader, multi-point discharge should not be used with both air cushion forms. Later, when the expansion of that cushion belt conveyor with rollers
Conveyor obvious advantages compared to, for a bold attempt to change all belt conveyor. To unload a net material will discharge point on the segment plate chamber made of
horizontal groove surface, to prevent direct impingement plate groove big lump deform the discharge point on the segment plate chamber made of concave groove
Put into operation early, the original structure of the gas chamber there is a big problem, there are five five silos by feed point; inner ring is above the stoker coal, when mine conveyors
the side is running, the other side of the coal drop point easy to plot the formation of coal Pillar pressure in the gas chamber plate concave groove Admiral tape crushed; often
connected load can not start
Phenomenon; some discharge gas chamber at the disc slot is flat and can not form a gas film, but also destroyed the adjacent gas chamber plate groove surface air layer,
resulting in a larger area of sliding friction, running resistance, pull action. Exposed some potential problems: (1) the load is low, less than the amount
Be productive, reached only about 60% of the rated productivity.
(2) Large dust, coal dry, dust concentration within the corridor trestle seriously overweight, serious unseen person. (3) The surface of the disc slot hole frequent clogging,
clogging, the gas chamber pressure, the chamber is deformed as little stiffness, severe, the bearing surface of the tape can be pulled
, Side outer drum, bounced back after stopping for the wind, causing the sealing surface leakage; plugging holes where no cushion after the formation, resulting in sliding Pharmaceutical metal detector
friction, running resistance, increased wear and tear tape, fans working in an irregular situation, easy to burn the motor.
Clogging problems clogging problem is that all the plants are washed with water problems for two reasons: First, the gas chamber plate groove on the outer edge of integrable
coal or dust, water flushing it into the gas chamber face ; Second, return the work surface sticky tape and coal was brought into the chamber face. Block
Hole problems caused many adverse consequences, power plants have many practical problems arising therefrom: (a) plugging holes, the friction has been a fundamental change in
the nature of the material and the carrier tape and disk groove surface sliding friction occurs directly, tape and Smooth sliding friction coefficient of the steel plate 0102,
and a positive
Often drag coefficient of 001,002 running, roller drag coefficient of 002,004, which is not many power plants with low load starting and load one of the main. (2) blocking the
hole, the hole area is reduced, the gas inside the pressure increased, if the stiffness of the small air chamber, will be deformed, thereby enabling the welding
Seam cracking, leakage at the seams. (3) plugging holes in the fan will work under abnormal conditions, easy to burn the motor. Possible measures to prevent plugging holes to
prevent water from entering the gas chamber, you can add waterproof cushion along the sides, so that even staff scour the ground running when accidentally splashed water height,
Can not enter the gas chamber working face. In addition, the return water with a splash at the face inevitable, the design can be tail pulley and tail gas chamber widening the
distance, so that the water does not spill into the gas chamber and put an end to coal and dust into the air chamber.
Dust big problem big factor with coal dust, coal for coal is dry, coal flow to 25m / s speed operation, will bring up the surface powder; tape from the gas chamber into the
trestle area revealing wind on inflatable air chamber, causing disturbance, slowing the process of natural sedimentation of dust,
The cumulative effect of dust generated, dust concentration gradually increased until equilibrium is reached.
The greater the amount of wind disturbance produced larger dust settlement process lengthened, trestle dust concentration within the greater; gas chamber disc slot on the dust
or air box with dust, the fan starts flying dust may cause short-term .
Need to be designed and developed a practical and efficient dust removal equipment.
At present, the domestic air-cushion belt conveyor in basic theoretical research, production and manufacturing standards and other aspects should be improved and enhanced.
Should further deepen the basic theoretical research, unified design theory, more effective, scientifically guide production. The overall cushion belt conveyor manufacturing
Technological level also needs to be improved, the current low level of most factory production process, but also in a semi-mechanical semi-manual job status; gas chamber
versatility, interchangeability poor, unstable quality, low precision. Should build a number of high starting point cushion belt conveyor plant to drive the entire cushion
Development of the industry and promote its manufacturing level. Cushion belt conveyor should form their own series, if still follow the standard belt conveyor idlers, and its
advantage is difficult to play.