Method for manufacturing pressure filtering plate

Abstract

The invention discloses a method for manufacturing a pressure filtering plate, which relates to the field of pressure filtering plate manufacture. Aiming at the technical defects of long manufacturing time and low efficiency in the manufacturing of the pressure filtering plate by using cast iron and plastic, the invention provides the method for manufacturing the pressure filtering plate, which comprises the following steps in turn: preparing materials; adding the materials to a mold; closing the mold to press; solidifying while maintaining a pressure; and releasing the pressure and de-molding. The prepared materials comprise unsaturated polyester fiber glass reinforced molding compound and comprise the following components in percentage by weight: 20 percent of unsaturated resin base stock, 18 percent of fiber glass, 7 percent of low shrinkage additive, 0.18 percent of thickening agent, 1.2 percent of parting agent, 0.2 percent of initiator and the balance of ground limestone filler. The low shrinkage additive is mixed by pulping liquid styrene and solid polystyrene particles in a weight ratio of 7:3. The method for manufacturing the pressure filtering plate has convenient production, fast speed, high efficiency and high product hardness, and prevents scraps on the surface from falling onto a filtered object after long-term use.

Description

【Technical field】 [0001] The invention relates to the field of filter press plate manufacturing, in particular to a filter press plate manufacturing method. 【Background technique】 [0002] Most of the filter press plates used in existing filter presses are made of a single material such as cast iron or plastic. The manufacturing method of cast iron filter press plates is to pour high-temperature molten iron into a mold and then cool it. The molten iron takes a long time to melt. It takes a long time to cool the poured cast iron filter press, and the production efficiency is low. Moreover, after a period of use, a large amount of iron filings will fall off the surface of the filter press, which will stick to the surface of the filter and cause pollution, reducing the waiting time. The purity of the filter material; another type of plastic filter press plate also needs to melt the raw material at high temperature first, then press it in the mold and then cool it to shape. A pa...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved and the technical task proposed by the present invention are to overcome the technical defects of long manufacturing time and low efficiency of existing cast iron and plastic filter press plates, and provide a manufacturing method of filter press plates with convenient manufacturing, fast production speed and high efficiency , the press filter plate made by this method has high hardness, and after long-term use, there will be no debris falling off the surface and sticking to the filter.

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