A press filter plate, filter press and filter press method controlled by pneumatic unloading and side-by-side control

Abstract

A pressure filtration plate capable of achieving two-side control over air pressure type discharging comprises a pressure filtration plate body and is provided with a material channel and drain channels, and the front side and the back side of the pressure filtration plate are provided with filter cloths. A pressure filter with the pressure filtration plates capable of achieving two-side control over air pressure type discharging comprises multiple pressure filtration plates, a rack, a thrust plate, a material pushing plate, a hydraulic system and a plate loading trolley; the front drain channels and the back drain channels of the pressure filtration plates are communicated with a front main drain pipe and a back main drain pipe respectively. A pressure filtration method achieved by using the pressure filter capable of achieving two-side control over air pressure type discharging comprises the followings steps that 1, materials are pumped into filter chambers; 2, pressure filtration is performed on the materials for solid-liquid separation; 3, the pressure filtration plates are moved one by one, the filter chambers are opened, and discharging is performed until discharging of all the filter chambers is completed, wherein after the pressure filtration plates are moved one by one and the filter chambers are opened, air inflation is performed on every two pressure filtration plates which are opposite to each other and are located on one side of the corresponding filter chamber, so that the corresponding filter cloths, on one side of the corresponding filter chamber, of the two pressure filtration plates can be arched outwards to be in a circular arc shape.

Description

technical field [0001] The present invention relates to the technical field of filter equipment, in particular to a pressure filter plate, a filter press and a filter press method controlled by pneumatic unloading and side-by-side control. Background technique [0002] Filter press is a kind of equipment that separates materials from solid and liquid through pressure filtration. It is widely used in food, chemical, environmental protection and sewage treatment industries, especially for the separation of sticky and fine matter. It has unique advantages. For example, the sludge produced by chemical and domestic sewage treatment has a high water content and must be dehydrated to reduce its volume before it can be discharged. However, due to the poor design of the traditional filter press, the unloading time is insufficient, which eventually leads to a series of problems such as the decrease of the sealing performance of the entire filter press and the decrease of the filter pr...

AI Technical Summary

Problems solved by technology

However, due to the poor design of the traditional filter press, the unloading time is insufficient, which eventually leads to a series of problems such as the decrease of the sealing performance of the entire filter press and the decrease of the filter press effect.

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