High-pressure diaphragm filter plate

Abstract

A novel high-pressure diaphragm filter plate is composed of two diaphragm plates 1, a middle supporting plate 16, a filter plate annular hoop 6 and the like. The filter plate is circular, a feeding hole is arranged in the center of the filter plate, and feeding is smooth and uniform; the diaphragm plates 1 have relatively high compressive strength and good deformation ability, and are fixed at two sides of the middle supporting plate 16 respectively; the filter plate annular hoop 6 tightly hoops the excircle of the diaphragm plates 1 and the middle supporting plate 16, so that the diaphragm plates 1 can bear higher feeding pressure and tympanic membrane pressure; the novel high-pressure diaphragm filter plate can bear the 3.0-8.0 MPa feeding pressure and tympanic membrane pressure; after a diaphragm movable plate 2 is trumped up, the filter chamber volume is reduced by 1 / 3 or more, so that a filter press adopting the filter plate has a super-strong dehydration ability, and moreover, has the advantages of simple structure, reliable performance, low cost, large specification and the like.

Description

technical field [0001] The invention relates to the technical field of sludge filter press dewatering equipment, in particular to a high-pressure diaphragm filter plate with variable filter chamber volume. 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, pharmaceutical, metallurgy, environmental protection and other industries, especially for the separation of sticky and fine substances. It has unique advantages. Sludge from chemical and urban sewage treatment must be dehydrated. Conventional belt dehydration or centrifugal dehydration methods, the moisture content of dewatered sludge is about 80%, which cannot be directly landfilled, and aerobic composting, thermal drying, incineration, etc. all lead to high disposal costs due to their high moisture content. Therefore, using a high-performance filter press for high-dry sludge dehydration to redu...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the shortcomings of the existing diaphragm filter press, such as low pressure resistance, low tympanic membrane pressure, small tympanic membrane volume, unsatisfactory dehydration capacity, high cost, small size, easy mud running and difficult maintenance, etc. A high-pressure diaphragm filter plate and a filter press using the high-pressure diaphragm filter plate have the reliability of an ordinary diaphragm filter press and the dehydration capacity of a high-pressure filter press with a steel filter plate

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