Flushing:

During dewatering, fine gypsum particles can clog the filter cloth. The filter cloth after the filter cake falls off should be cleaned before and after, after the filter cloth is regenerated, return to the original position, and rinse the filter cloth with a cleaning pipe. Front; another cleaning tube is used to rinse the other side of the filter cloth. It is installed under the discharge end of the vacuum belt dehydrator. The nozzles are arranged according to the water pressure and flow rate, as well as the distance between the nozzle and the filter cloth and the spray angle. The water flow from the nozzles shall be fan-shaped and adjacent fan-shaped spray areas shall overlap. The gypsum particles remain in the grooves of the belt and also require rinsing. In order to ensure the moisture content and the chloride ion content of the filter cake, a filter cake cleaning device is provided.

Cloth calibration:

The mechanical equipment of the sand washing sewage filter press is often in good condition and the work efficiency is high. Therefore, it is important to ensure the state of the sand washing sewage filter press. However, for companies that have no experience in sand washing sewage filter presses, what details should be paid attention to when adjusting the sludge treatment effect, and from what aspects?

The calibration system of the filter cloth is a pneumatic control system. The system consists of baffle arms and pneumatic control valves, air bladders and rubber correction rollers. The arm is always in contact with the filter cloth, and its rotation controls the pneumatic control valve so that one end of the airbag expands at one end and the air contracts at one end. The deviation of the filter cloth (the reciprocating movement of the filter cloth) is completed by the correction roller. The self-aligning bearing seat is installed and fixed at one end of the frame, and the other end is connected with the deviation of the airbag and automatically moves to the correct filter cloth. Limit switches are installed on both sides of the vacuum belt dehydrator frame. When the filter cloth is severely deflected, the limit switch will be squeezed to stop the vacuum belt dehydrator. Under normal circumstances, before construction, carefully check whether the joints of the sand washing sewage filter press are firm and whether the operating contact of each component is good. If any abnormality is found, the maintenance personnel should be informed immediately for maintenance. If it is found that the action accuracy caused by the electrical components is poor, insensitive, etc., it should be repaired or replaced in time. Secondly, the maintenance of the hydraulic system is mainly to view and maintain the seal of the hydraulic components and interfaces. If the sludge filter press is not used for a long time, the filter plate of the plate filter press should be cleaned and discharged onto the frame of the filter press. Clean and dry the filter cloth; expose the piston rod, and apply butter to the integrated block. Be sure to check the sealing surface of the sand washing sewage filter press to ensure that it is clean and clean; before pressing, the filter cloth should be carefully checked to ensure that the plate and frame filter press will not be folded, damaged or slag-free. Smooth and flat to ensure the function of the filter press; the plate and frame filter press should always flush the filter cloth to ensure good filtrate penetration.