Briefly describe the common problems of filter plates

 During use, do you spray grout between the filter plates?

 

If spraying suddenly occurs after long-term use, it may be caused by insufficient pressure in the machine itself or uneven filter cloth. If this happens, the equipment should be shut down immediately and check whether the filter cloth is flat, has debris or is damaged. Debris should be cleaned up in time, and if the filter cloth is damaged, replace it in time. If there is no problem with the filter cloth, the hydraulic system needs to be checked. If the oil level is insufficient, replenish the hydraulic oil. If the relief valve is damaged, repair or replace it. If the oil pump is damaged, replace the oil pump.

 

The filter plate cannot be opened, what should I do?

 

After the filter press is blown and released, the filter plate often cannot be opened or stops working intermittently. Then, you can try the following solutions: ① The filter plate must be loosened to relieve pressure to meet the pressure standard. Once the pressure is not completely released, the filter plate will become loose due to the operating lock. ② If the system loses too much during long-term operation and the hydraulic oil cannot be replenished in time, there will be insufficient oil supply in the system, which will lead to poor continuity of the hydraulic cylinder and intermittently stop working.

 

During the closing process, the action of the filter plate is out of sync?

 

When the filter press is working, there is a linkage and locking relationship between the internal mechanical structures. Once the filter plate movement is out of sync after the closing operation, you should promptly check whether the unloading trolley is in the initial position. If the initial position of the unloading trolley does not change, the initial position should be further checked to see if the detection device is operating normally. If there is a problem with the detection device, it should be repaired in time.

What should I do if the filter plate is damaged?

 

Damage to the filter plate may be caused by the following reasons:

 

The feed hole is blocked; the feed pressure is too high; the material concentration is high and the fluidity is too poor; the feed temperature is too high; the filter cloth is damaged and the liquid outlet hole is blocked.

 

The corresponding treatment methods are as follows: if several filter plates near the feed port are damaged, it can be initially judged that the feed port is clogged, the slurry concentration is too high, or the feed hole is not cleaned in time, which can cause the filtrate to be diluted; back pressure occurs Or the pressure gauge shows a pressure exceeding the pressure specified on the nameplate, indicating that the feed pressure is high. The pressure controller system at the feed end should be adjusted in time; the material concentration should be appropriately reduced to improve the material fluidity; first understand the temperature of the material. When the temperature of the filtered material exceeds the required When setting the operating temperature of the filter plate, explain the reason to the customer, and replace the appropriate filter plate or adopt a temperature to cool the slurry before filtering; if the filtrate of a few faucets is turbid, it can be judged that the filter cloth is damaged and the faucet is not working. If the liquid is flowing, it can be judged that the liquid outlet hole is clogged. The filter cloth should be replaced and the liquid outlet hole should be cleaned to ensure that the filtrate flows out normally and clearly.

 

How to identify the quality of filter plates?

 

First of all, the necessary condition for the filter plate is that the size of the filter plate is basically the same as that of the original equipment, including the length, width and thickness of the filter plate. If there is a deviation, the filter plate will move left and right during filtration, and may even fail to fit, seriously affecting the pressure. The overall operation of the filter.

Secondly, there are holes inside the filter plate. Since the current filter plate is made of thermally processed polypropylene, the filter plate is prone to holes during the casting process. When the holes reach a certain number, the filter plate is not a qualified product. .

Then there is the depth of the depression of the filter plate. The depth of the depression of the filter plate determines the workload of each gap cycle of the equipment. Generally, the deeper the depth of the filter plate, the greater the workload each time, but the deeper is not the better. When the filter plate is depressed, When the depth exceeds the bearing capacity of the filter plate itself, the filter plate is easily broken or damaged, and may even cause the filter plate to burst suddenly, which is life-threatening.

 

What is the reason for the low closing pressure of the filter plate?

 

During actual operation, if the liquid level in the hydraulic station tank is low, it may be caused by leakage of the hydraulic pipeline, resulting in pressure loss in the hydraulic station; the installation position error of the filter plate limit detection device is large, and the filter plate displacement control system is lifted to control the hydraulic pump. Premature stop; the filter plate closing pressure setting is too small, which will also lead to the filter plate pressing completion pressure being small.