Common faults and analysis of self-cleaning filter

Self-cleaning filter is an important equipment for wastewater treatment, which can lay a hard foundation for engineering quality. But self-cleaning filter running for a long time failure how to repair? In what aspects is it mainly reflected?

Water leakage occurs when the fault occurs

The water leakage problem generally appears in the transmission shaft part of the filter (the water leakage of the cylinder and the welding part of the flange is not within this scope). There are basically two reasons for this problem, which are as follows:

1. The material or specification of the transmission shaft sealing ring does not meet the requirements, so replace the sealing ring that meets the requirements.

2. Two is the sealing ring after a long time of operation wear, causing the transmission shaft and filter body between the seal is not strict and water leakage, like this case to replace the corresponding specifications of the sealing ring can solve the problem.

Fault 2 Automatic blowdown valve is faulty

Specific performance for automatic cleaning blowdown valve does not move or blowdown valve can not open has been closed.

1. this problem is generally the selection of domestic electromagnetic blowdown valve, the solenoid valve for pilot type, first by the solenoid to open the pilot hole, and then rely on the pressure of the water in the system to open the diaphragm to open the valve.

2. because there are many impurities in the sewage water, it is easy to block the pilot hole, resulting in the solenoid valve does not act or closed loosely after opening.

3. choose electric ball valve or hydraulic solenoid valve as blowdown valve, it completely solves the common solenoid valve as a self-cleaning filter automatic blowdown valve prone to problems.

Fault 3 The self-cleaning control system is faulty

Frequent startup causes increased cleaning water and shortened filter life.

1. This problem is generally caused by the parameter setting of the filter not in line with the working condition.

2. This is mainly the problem of cleaning differential pressure and cleaning time interval set by the differential pressure controller. The frequent startup of the filter cleaning system can generally be solved by setting a larger differential pressure and time interval.

Self-cleaning filter does not need to be maintained without problems. In fact, self-cleaning filter needs regular maintenance and overhaul. The purpose of doing so is to ensure that the failure of equipment can be detected and handled in a timely manner, so that the self-cleaning filter can run stably for a long time.