Pneumatic conveying equipment in operation precautions and troubleshooting
The use of gas flow in the pipe to convey particulate solids is called pneumatic conveying. Gas as a transfer medium, the most commonly used is air, but when the transport
explosive powder, other inert gases may also be used.
Pneumatic conveying method used from the beginning of the 19th century port terminal grain transportation and factories. Because compared with other mechanical conveying method
has many advantages, it is pneumatic conveying and power production in the chemical used increasingly, among which pressure dense phase pneumatic conveying majority.industrial belt conveyor
Dense phase pneumatic conveying system typical structure and principle: dense phase pneumatic conveying system transmitter embolism way to transport materials, hopper and
transmitter without additional fluidization. System operation generally consists of five phases, Phase 1: A reliable, high-strength transmitter dome valve closed
Inlet; Phase 2: conveying air into the transmitter for dense phase conveying embolism; Stage 3: push up material along the conveying air ducts move; Stage 4: The air pressure is
applied to the material remained tied into the database; Stage 5: Go to the database of the air discharged through the baghouse material
Notes and troubleshooting:
(1) Emission class tank water, at least once per shift.
(2) Check the valve class situation.
(3) Check the gauge condition class, the pressure is correct.
(4) checked weekly circuit, gas, pipeline, mechanical body condition.
(5) any abnormal condition.
(6) pipeline system in stressful circumstances, prohibit demolition and repair.
(7) Stay seals undervoltage, undervoltage discovered in time to inspect the gauge pressure is normal, if the table down may have the following reasons: lack of air pressure, material handling conveyor
seals broken, need to replace the seals; Check pressure sensor works is normal; checks connected with this
Piping, fittings for cracks or leaks.
(8) always concerned about whether the place of the pneumatic valve, pneumatic valve is not in place may have the following causes: leaking gas line and fittings, mechanical
lifter loose valve bearing exception, foreign body stuck, relevant agencies exception, solenoid valve abnormalities.
(9) Stay the course of transmission high voltage alarm may have the following reasons composition: variation in materials and material composition; disabled for some time, re-
enabled; conveying air pressure fluctuations or short-term disappearance; sudden increase in the amount of material .
(10) Weekly View Gallery top valve position adverse may have the following causes: leaking gas line and fittings, solenoid valve abnormalities, abnormalities related
(11) high-pressure alarm handling conveyor system long way. The automatic switch control box manually, the fill valve is open (the intake valve is closed), observe the pressure
transducer readings closed fill valve, pressure transducer readings observed again, when the pressure transducer variable readings
Of magnitude larger, indicating that the material in the pipe flow state is not blocked, observed readings down to the transmitter, the fill valve is opened again, when the
reading exceeds 3.OMPa, close the fill valve, so Cycle times can Paidu, high pressure disappears. When the pressure transmitter
Readout changed little or no change, indicating the pipe material has been blocked, it is judged blocking position, and then remove by its recent flange, the pipe apart,
everything ready, to look at the analog feed position, blowing air pipe before the split, blowing air after the position,
And then to take a good look at the analog pipeline material level, blowing air the entire pipeline. Paidu after the manual switch to automatic mode.
(12) When the material location appear high alarm approach. When the material location appear high alarm, the location must be switched, or plugging phenomenon will occur, and
damage the device.
(13) sealed undervoltage occurs when the system approach. Air pressure is low, the first conveyor system to stop, promptly check the gas supply pipe to determine whether there
is leakage points, identify problems and timely treatment. Top of your library baghouse pulse valve solenoid valve long-term use due to impurities within the gas source
The damage caused by lack of air pressure, this time, you should dust intake valve closes, remove the valve to clean up, if you still can not use and must be replaced.
(14) gas source overhaul approach. When the compressor must be serviced gas stop, it must first notify the transportation system operator, when operating personnel will be sent
within the material handling system is shut down after the finish before downtime, must not stop in the transportation process gas source, otherwise it will create
(15) Field strength parts and on-site maintenance of the control box. The operator must keep the site clean and make vitality in the normal working state operation. Never use
water erosion site control cabinet, control cabinet components to avoid damage to non-water scour level meter, in order to avoid material
Level meter malfunction, causing the conveyor system is not working properly.