6 Common Faults and Solutions of Filter Press

6 Common Faults and Solutions of Filter Press

The filter press is a pressurized filtration equipment for solid-liquid separation. As the use time and frequency of use increase, some faults will occur. The fault manifestations are diverse, so it is necessary to study the fault manifestations and causes. Provide assistance with filter press troubleshooting and optimization. This article will analyze common equipment issues and provide relevant solutions based on Uniwin’s more than 20 years of experience.

filter press drawing

Main Beam Bending

The bending of the main beam may be due to the rough foundation of the tank and low degree of freedom or the irregular arrangement of the filter plates caused by the free operation of the plate-pulling machine.

The solution is to reinstall the equipment or adjust the synchronous operation of the plate-pulling machine.

main beam

Uneven Filter Cake Formation

Uneven distribution of slurry, clogged feed ports, or inconsistent feed pump pressure.

The solution is to maintain the feed port and pump regularly, monitor slurry distribution, and adjust feed pump pressure accordingly.

filter cakes

Material Leakage between Filter Plates

The leakage between the filter plates is usually caused by excessive pressure and flow of the feed pump, which causes dirt on the sealing surfaces of the filter plates and diaphragms, the filter cloth is not smooth and wrinkled, and the oil pressure is unstable.

The treatment measures are to readjust the feed pump, clean the filter cloth, and adjust the oil pressure to an appropriate range.

Filter Plate Damaged

The failure of the filter plate is generally caused by the pressure problem between the filter cloth and the filter plate: the filter cloth is uneven when installed or has been used for a long time or is damaged; the pressure between the filter plates is insufficient.

In order to reduce filter plate failures, strictly check whether the rubber pad is flat during installation, and it is strictly forbidden to fold or wrinkle the filter cloth. Check whether the filter cloth is intact, and the edge of the filter cloth should cover the entire filter plate. Regularly deal with the dirt in the inlet mud to keep the filter plate clean. The pressure is evenly distributed.

filter plates

The Filtrate is Unclear

The filtrate is mainly unclear because the filter cloth is damaged, and the muddy water cannot be separated and flows out from the spout. In addition, this phenomenon may also be caused by the damaged filter plate’s loose sealing and solid impurities on the plate surface.

According to this situation, specific issues need to be analyzed in detail. If it is confirmed that the filter cloth is damaged, in addition to replacing the filter cloth, it is also necessary to check the cause of the damage to the filter cloth further. Ensure that the filter cloth is installed smoothly without folding or wrinkles and that the filter plate is completed without damage. In addition, during each unloading process, the mud on the surface of the filter cloth must be removed in time to avoid damage to the filter cloth.


Hydraulic System is Noisy

Air inhalation, loose fasteners, excessive viscosity of the hydraulic oil, clogged oil return filter, etc, may cause noise in the hydraulic system.

The treatment measures are to open the exhaust valve, ensure that the fasteners are firm, and reduce the viscosity of the hydraulic oil.

Hydraulic Station


To sum up, various problems will occur during the operation of the filter press. Optimizing measures to deal with the above problems will help solve them and ensure the filter press operation. In the future, it is necessary to innovate filter presses and improve the technical level of operators to increase the life cycle of filter presses.

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