How to check and maintain the failure of the screw conveyor?

Screw conveyor, also known as reamer, is a general conveying equipment in cement and cement raw material industry.

First, the function of the screw conveyor

With its unique structural characteristics, the screw conveyor has a variety of functions. The first is conveying, and the second is that it can be air-locked and can also be used for metering. The conveying method is to push the material forward with the rotation of the screw blade, and the air resistance mainly depends on the small gap between the blade and the shell and the dense or accumulation of materials generated by the variable pitch, such as sealing reamer and screw pump; metering is It is done by the combination of weighing and rotating speed, such as single tube metering cutting machine, etc. What is a screw conveyor? What kinds of it does it have?

Second, the structure of the screw conveyor

The screw reamer is simple in structure and reliable in operation, and is widely used in all walks of life. It is mainly composed of shell, spiral blade, reamer shaft, intermediate support hanger, end bearing body and bracket, coupling, gear motor, discharge port, etc.

Three, the inspection content of the screw conveyor

Although the screw conveyor is simple, the inspection content is essential, mainly including the following several aspects.

1. Inspection of the shell

The inspection of the shell should firstly check whether the upper cover of the shell is dislocated, ash leakage, or the shell Shaking, whether there are any bad phenomena such as shell wear, Sassafras shell, etc.

2. Lubrication check

Check the reducer or gear motor, whether the lubricating oil level is appropriate, and check whether the hanger oil cup is short of oil.

Four. Maintenance of screw conveyor How does the screw conveyor work?

Maintenance is mainly to carry out the problems found in the inspection Handling or regular maintenance of equipment can be attributed to the following aspects.

1. Regularly carry out quantitative, fixed-point, and qualitative refueling of the equipment.

2. When the casing is found to be shaking, it may be that the anchor bolts are loose, the hanger bolts are loose, the hanger bearing is damaged, etc. If the hanger or the main bearings at both ends are damaged, it should be stopped in time or planned to be replaced. It is also possible that there is a large block or foreign matter stuck between the blade and the shell, which should be stopped for cleaning.

3. There is a friction sound in the casing

It may be that the bearing of the intermediate hanger is damaged, the blade sinks or the hanger is loose, and the If there is friction between the blade and the casing, stop the machine to replace the bearing or fasten the hanger; if there is a foreign object between the blade and the shell, stop the machine to clean it. If the sound is emitted from the bearing, it should be caused by dust entering the bearing or no oil, and it should be cleaned and refueled.

4. Ash or ash leakage from screw conveyor

When ash is found, it should be due to poor sealing or insufficient negative pressure of the body As a result, the place where the dust is emitted should be sealed, the valve of the dust collection pipeline should be adjusted, and the air volume should be increased. If the body leaks ash, it should be repaired at the wear-through part, check whether the discharge channel is unobstructed, prevent the aggregate in the shell from causing overflow, and check whether the feed is too much, which exceeds the design capacity of the reamer. If there is a timely adjustment. At the same time, check whether the motor is running with phase loss, etc. LS screw loading conveyor uses and parameters detailed explanation

5. Cross coupling fracture

The cross coupling fracture is mostly caused by crumpled neck, overload If it is caused, foreign objects should be avoided from entering the machine cavity, and foreign objects should be removed when replacing, and the safety standard should be aligned.

6. Transmission Troubleshooting and Handling

If there is abnormal noise and high temperature inside the reducer, it is usually due to damaged internal bearings and gears If it is caused by the failure, it should be opened for inspection, replacement, repair and treatment, and ensure that the lubrication is normal. If oil leaks, seals should be inspected and treated to keep vents clear.

If it is found that the high noise and low speed of the motor are generally caused by phase loss or overload, the reasons should be promptly identified and repaired. If the gearbox vibrates and sounds normal, check for loose anchors.

In addition to normal repairs and maintenance, cement must be kept clean and hygienic. There must be no unstable objects on the rotating parts. Current and device loads must also be observed.

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