Metal frame filter press filter plate

Abstract

The invention belongs to the technical field of filter presses, and particularly relates to a metal frame filter press filter plate. The metal frame filter press filter plate comprises a filter plateouter frame, a filter plate main body and filtrate discharge structures, wherein the filter plate main body adopts a screen mesh, the central area of the filter plate main body is provided with a feedhole, and the feed hole is welded to a feed ring; the filter plate outer frame is fixed to the periphery of the filter plate main body and consists of four frames; the thickness of the filter plate outer frame is 30-50 mm and is 5-10 times of the thickness of the filter plate main body; at least the left frame, the right frame and the lower frame are each provided with a flow passage cavity and the flow passage cavities communicate with one another; a plurality of liquid guide channels which communicate with the corresponding flow passage cavities are formed in the inner sides of the left frame, the right frame and the lower frame; liquid discharge holes are formed in the outer side of the lower frame; and each liquid discharge hole is connected with a corresponding liquid discharge pipeto jointly form the filtrate discharge structure. After the metal frame filter press filter plate is applied to the filter press of the same type instead of a traditional solid filter plate, the liquid discharge speed is higher, the liquid discharge efficiency is higher, the flow passage area is larger, the formed sludge quantity is larger, and the advantages are obvious.

Description

Technical field [0001] The invention relates to a filter plate of a metal frame filter press, belonging to the technical field of filter presses. Background technique [0002] The filter plate is the main component of the filter press. At present, the filter plates used in the filter press are mostly solid plates. Usually, a number of protrusions are set on the front and rear surfaces of the solid plate, and a liquid flow channel is formed between the protrusions. During the working process, the material enters the chamber formed by the adjacent filter plate through the feed pipe, and is fed and squeezed by the filter press. The liquid in the material enters the liquid flow channel of the filter plate through the filter cloth covered by the filter plate. And discharged through the filtrate discharge device, in the actual use process, there are the following defects: [0003] 1. The small particulate matter in the material will enter the liquid flow channel of the filter plate with...

AI Technical Summary

Problems solved by technology

[0003] 1. The small particles in the material will enter the liquid flow channel of the filter plate with the liquid through the filter cloth, and after a long time, the particles will gradually deposit, the flow area will decrease, and a buffer resistance will be formed, which will affect the water outlet speed of the filter press and make it The overall use effect of the filter press is reduced

[0004] 2. The filtrate discharge device on the traditional filter plate is designed on two or four corners of the filter plate. After a long time of use, the problem of the reduction of the flow area will also occur, which will affect the discharge speed of the filter press, seriously Sometimes there will be clogging, which will affect the normal operation of the filter press.

[0005] 3. Most of the filter plates are made of polypropylene. In order to ensure the strength, the thickness of the filter plate is usually designed to be relatively thick (such as the 1250 filter plate, the filtration strength is 0.6-1.0MPa, and the thickness is 80-100mm. When the length of the filter press is determined , the number of filter plates installed is limited, and the flow area of ​​the filter press is also limited accordingly. To improve the filtration efficiency, the length of the filter press can only be further increased to increase the equipment cost

Images