Special filter plate for diatomite

Abstract

The invention provides a special filter plate for diatomite. The filter plate is hollow-shaped, and a connecting hole is formed in the center thereof; round sealing surfaces are arranged in the vicinity of the center hole on two lateral surfaces of the filter plate; and a plurality of parallel convex strips are arranged on the two lateral surfaces of the filter plate. The invention overcomes the disadvantages that the filtering layer is prone to dropping off, the filtrate can be re-contaminated and the operation is complex in a conventional stainless steel grid which is sleeved with cotton fabric and a filter plate; the invention further overcomes the defects that the filtration efficiency is low and the separating and filtering effects are poor in a compact stainless steel screen filter plate having a single-sided structure; and meanwhile, the invention overcomes the defects that the filtration efficiency is low or the diatomite is prone to dropping off in a flat macromolecular polyethylene filter plate. When in use, the diatomite is heaped in a heaping slot, and the heaping slot is supported by the bottom surface of the filter plate, so that the diatomite layer cannot drop off during either the normal filtering period or the shut-down and standby period; the invention thoroughly solves the problem that the filtering layer is prone to dropping off; and the invention has the advantages of good solid-liquid separating effect, no filtrate recontamination, high production efficiency and high popularization and application values.

Description

technical field [0001] The invention relates to a filter plate for solid-liquid separation, in particular to a special filter plate for diatomite. Background technique [0002] At present, diatomite is mostly used as a filter aid in solid-liquid separation processes such as wine and beverages. Although diatomaceous earth is an excellent natural filter material, because it is in powder form, it must be attached to some carrier to realize its filtering function in specific applications. [0003] At present, there are mainly three structural forms as the filter carrier of diatomite: ①Stainless steel grid cover pure cotton cloth cover filter plate, which is a traditional filter plate. Its shortcoming is that the diatomite filter layer attached to the cotton cloth cover is easy to partially or completely fall off during filtration, especially during shutdown and standby, and the filtration separation effect is poor; diatomite easily penetrates the gap of the cloth cover and caus...

AI Technical Summary

Problems solved by technology

③During the solid-liquid separation and filtration process, diatomite will not penetrate the filter plate to cause secondary pollution, and the solid-liquid separation effect is remarkable

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