High-pressure filter press

Abstract

The invention discloses a high-pressure filter press. The high-pressure filter press comprises a belt type filter-pressing dehydration section and a crawler belt high-pressure dehydration section which are mounted on a rack from top to bottom, wherein the belt type filter-pressing dehydration section comprises a gravity dehydration section, a low-pressure dehydration section and a medium-pressure dehydration section with pressures sequentially increased from top to bottom; and a mixing stirrer is arranged between a discharge port of the medium-pressure dehydration section and a feed port of the crawler belt high-pressure dehydration section. According to the high-pressure filter press, filtering pressure is greatly increased, the maximum filtering pressure is increased to 5 MPa from 0.6 MPa, and the filtering effect which is not lower than the filtering effect of a high-pressure diaphragm plate-and-frame filter press is achieved; the mixing stirrer is mounted at the feeding position of the crawler belt high-pressure dehydration section, and a filter aid or a treated backflow material is added into a material having been subjected to medium-pressure dehydration according to the characteristics of the material, so the high-pressure adaptability of the material is improved, and continuous high-pressure filtration dehydration is realized; and a crawler belt ring in the crawler belt high-pressure dehydration section is provided with a sealing strip and a water retaining flange, so a nail bearing is not corroded by a filtrate, and service life is greatly prolonged.

Description

technical field [0001] The invention relates to a high-pressure filter press. Background technique [0002] Filter presses are widely used in solid-liquid separation in non-ferrous metallurgy, mineral processing and coal preparation, ceramic building materials, petrochemical, papermaking, food, printing and dyeing textiles, biopharmaceuticals, municipal sewage and environmental protection industries. Commonly used plate and frame filter presses and belt presses Filters and plate and frame filter presses have disadvantages such as low production efficiency, large floor space, low degree of automation, and inability to process continuously. Although the belt filter press can automatically clean the filter cloth and automatically control the filtration process, the filter pressure is low, resulting in a high water content of the filter cake after treatment. It cannot achieve the expected effect in many industrial applications and is gradually eliminated. Therefore, it is improv...

AI Technical Summary

Problems solved by technology

[0002] Filter presses are widely used in solid-liquid separation in non-ferrous metallurgy, mineral processing and coal preparation, ceramic building materials, petrochemical, papermaking, food, printing and dyeing textiles, biopharmaceuticals, municipal sewage and environmental protection industries. Commonly used plate and frame filter presses and belt presses Filters, plate and frame filter presses have disadvantages such as low production efficiency, large floor space, low degree of automation, and inability to process continuously.

Although the belt filter press can automatically clean the filter cloth and automatically control the filtration process, the filter pressure is low, resulting in a high water content of the filter cake after treatment. It cannot achieve the expected effect in many industrial applications and is gradually eliminated. Therefore, it is improved The filtration pressure of the belt filter press has been a long-term research topic

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