Plate-and-frame filter press in novel discharging manner

Abstract

The invention discloses a plate-and-frame filter press in a novel discharging manner. Water separating holes of filter plates and a feeding port serve as aeration channels, after a water separating process is finished, an oil cylinder relieves pressure without retraction, filter cloth is rhythmically subjected to back flushing by compressed air through the aeration channels to form pulse aeration to loosen mud cakes adhered to the filter cloth, and then filter plates are pulled to discharge. By means of pulse aeration, air enters from the main feeding port in a thrust plate to form longitudinal vibration on the filter cloth; by addition of special filter plates, air fed from the lateral side and air fed from the main feeding port in the thrust plate form longitudinal and transverse vibration to loosen adhesion between the mud cakes and the filter cloth, and easiness in separation, freeness of environmental pollution and convenience in outward transport are realized.

Description

technical field [0001] The invention relates to a plate and frame filter press, in particular to a plate and frame filter press with a new discharge method. Background technique [0002] The plate and frame filter press consists of a set of filter chambers arranged alternately through filter plates and filter frames. There are grooves on the surface of the filter plate, and the protruding parts are used to support the filter cloth. There are through holes on the corners of the filter frame and filter plate, which form a complete channel after assembly, which can pass into the suspension, washing water and lead out the filtrate. There are handles on both sides of the plate and frame to support the beam, and the plate and frame are pressed by the pressing device. The filter cloth between the plate and the frame acts as a sealing gasket. The suspension is hydraulically pumped into the filter chamber by the feed pump, and filter residue is formed on the filter cloth until the...

AI Technical Summary

Problems solved by technology

[0003] Because the existing plate and frame filter presses are all fed by the feed inlet arranged at one end of the thrust plate of the filter press, discharged from the liquid outlet, fed from the feed inlet, and passed through multiple sets of filter plates and filter cloths. , gradually filled from one end to the other end, this structure has many problems, mainly as follows: 1. The filter cake has a high water content, a long time for mud discharge, difficult transportation, and serious pollution

2. The filter cake can't fall off because of the bond, the labor intensity of manual removal is high, and it is easy to shovel and break the filter cloth

3. If the filter cake is not clean, it will cause the residue to harden, and the filter cloth will be easily damaged when it is put into operation again.

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