Concrete mixing station common faults and processing
[2014-12-11 09:22:24] HaomeiAnalysis of the reason may be: poor gas path, such as gas source in the joint parts of gas water separator filter was too dirty, causing poor gas path, reduce gas flow per unit time, resulting in slow cylinder activities; Muffler is too dirty, in a cylinder rod cavity and narrowing of the rodless cavity pressure, slow in cylinder.
If processing method is: poor gas path, should be timely clean or replace filter; If the muffler is too dirty, should clear in time the silencer.
3. The discharging mouth out
The fault in the contactor and for the performance of motor rotates clockwise, dual screw conveyor discharging mouth does not discharge, a long air switch trip; Will close air switch to start the motor after tripping, still observe powder without solidification phenomenon.
Analysis of the reason may be: machine tool as the reverse; Air switch is damaged; Machine tool motor wiring may have a bad contact.
The inversion processing method is: if the machine tools, the machine tool motor wiring level can be arbitrary 2; If the air switch is damaged, should be replaced; If the machine tool motor wiring a bad contact, should check processing.
4. The stirring shaft "stuffy car"
The failure of mixing console when mixing mortar, stirring shaft rotation is difficult, or even halt.
Analysis of the reason may be: serious overload, material coupling shaft; Misoperation caused by secondary feeding; Weighing inaccurate; Mixing blade or side of blade and tank wall is larger, a foreign body into the meantime card; The voltage is too low; Mixing parameters set wrong.
Processing method is: if the serious overload, material coupling shaft, should adjust mixing capacity, clear in time of solidification of mortar; If that misoperation caused by secondary feeding, should remove excess material and according to process flow operation; If weighing, asking the operator to the scale; If mixing blade or a foreign body between the tank wall and side blade binding, should adjust the clearance between the plate and blade, make is not greater than 5 mm, and promptly clean house; If the voltage is too low, need to check the line voltage; If the parameter setting error, should carefully check the corresponding ingredients data and timely correction.
5. The host discharging door can it open it
The failure of work automatically when mixing station, the host discharging door won t open, stir over discharge when the light is not bright.
Analysis of the reason may be: discharging door and sealing plate between foreign material or product; Insufficient pressure pneumatic system, leak in the cylinder or oil mist detector damage; Electromagnetic valve and relay connection between falls off, virtual or relay is damaged; Solenoid valve coil burning or valve core binding; Time relay is damaged, causing the PLC no input signal is normal.
Processing method is: if the discharging door and sealing plate between a foreign body or material, should clean house, product material and flush the discharging door; If insufficient pressure pneumatic system, leak or oil mist in the air cylinder is damaged, should check the oil sprayer, joint, cylinder and other parts for damage; If the connection between electromagnetic valve and relay falls off, virtual or relay is damaged, should check the relay contact output and wiring, replace if necessary; If the solenoid valve or valve core binding of coil burning, should replace the solenoid valve; If the time relay is damaged, it should be replaced.
6. Conveyor belt running deviation
The failure of three kinds of situations: one is the conveyor belt in the case of no-load and load to the same side wandering, namely the center line of the conveyor belt transverse running deviation, one side of the conveyor belt to less material; Second, conveyor belt running deviation, and left/right has no fixed direction; Three is wandering in the middle of conveyer belt in the belt conveyor.
Foundation uneven, pinto roller sticky materials, grooved roller about imbalances and main adjust the imbalance caused by ministries, passive roller conveyor belt running deviation. If the conveyor belt in the case of no-load and load to the same side wandering, is not the same as the conveyor belt on both sides of the firmness or frame. At this time, shall, first of all, the frame foundation leveling, clear the glue on the pinto roll material, adjust the tension screw or weight. If the conveyor belt running deviation around without a fixed direction, the conveyor belt slack, tensioning mechanism should be adjusted. If the conveyor belt conveyor in the middle of the wandering, but by adjusting the position of the roller set to correct, as shown in figure 1.
Adjustment method: if the conveyor belt to a side, the side should be move lateral direction conveyor roller group, another side roller group will also be back extensions (or other side roller bracket will be appropriate). Return roller and bearing roller group adjustment method is the same. Of long belt conveyor system, adjust the roller group is very effective.
Redirection roller adjustment is an important part of the conveyor belt running deviation adjustment, the installation position of the roller must be perpendicular to the centerline of the conveyor transporting direction, otherwise inevitable wandering. As shown in figure 2, if the conveyor belt to the right side of his wandering, is should be on the right side of the bearing seat forward (or will be on the left side of the bearing seat (one-way); If conveyor belt running deviation to drum left, it should be the left side of the bearing seat forward (or on the right side of bearing seat (one-way).
Such as relative driven roller conveyor belt running deviation, contrary to drive roll adjustment method.