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Feeding pressure and pressing pressure linkage type pressure filter control method and high-pressure pressure filter

A feed pressure and control method technology, applied in the field of high-pressure filter presses, can solve problems such as filter plate damage, achieve the effects of increasing feed pressure, controlling fast response, and improving the ability of materials to separate filtrate

Active Publication Date: 2015-03-25
ZHEJIANG HUAZHANG TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main reason for the damage of the filter plate caused by the excessive feed pressure of ordinary filter press is the current operation control process.

Method used

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  • Feeding pressure and pressing pressure linkage type pressure filter control method and high-pressure pressure filter
  • Feeding pressure and pressing pressure linkage type pressure filter control method and high-pressure pressure filter
  • Feeding pressure and pressing pressure linkage type pressure filter control method and high-pressure pressure filter

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Embodiment Construction

[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are explanations of the present invention and the present invention is not limited to the following examples.

[0025] see Figure 1 to Figure 4 , the present embodiment feed pressure and compression pressure linkage filter press control method, including

[0026] a) Before feeding, apply a compaction pre-pressure to the filter press to maintain the sealing state of the filter plate when the filter press is empty;

[0027] b) Start feeding, as the material continues to fill the filter chamber of the filter press, the feed pressure in the filter chamber increases continuously, and the compaction pressure applied to the filter press also increases correspondingly according to a certain ratio.

[0028] In the process of increasing the feed pressure in this embodiment, the feed pressure is closed-loop controlled through the PID ...

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Abstract

The invention discloses a feeding pressure and pressing pressure linkage type pressure filter control method and a high-pressure pressure filter. The control method is characterized by comprising the following steps of: before feeding, applying a pressing pre-pressure to the pressure filter, so as to keep a sealing state of a filter board when a filter chamber of the pressure filter is empty; and starting feeding, so that a feeding pressure inside the filter chamber is continuously increased when a material is continuously filled into the filter chamber of the pressure filter, and the pressing pressure applied to the pressure filter is correspondingly increased according to a certain ratio. Compared with the prior art, the feeding pressure and pressing pressure linkage type pressure filter control method provided by the invention has the following advantages and effects of being simple to control and easy to realize; the feeding pressure of the pressure filter is greatly improved, so that the capability of separating filtrate by the material in the filter chamber is improved; and the control reaction is rapid, and the efficiency is high.

Description

technical field [0001] The invention relates to a filter press control method in which feed pressure and compaction pressure are linked and a high-pressure filter press. Background technique [0002] The working principle of the existing box-type filter press is that filter plates are arranged to form a filter chamber (both sides of the filter plates are recessed, and every two filter plates are combined to form a box-shaped filter room). The surface of the filter plate has pits and bosses to support the filter cloth. There are through holes in the center and corners of the filter plate, which form a complete channel after assembly, which can pass into the suspension, washing water and lead out the filtrate. There are handles on both sides of the filter plate supported on the beam, and the filter plate is pressed by the pressing device. The filter cloth between the filter plates acts as a seal. Under the pressure of the feeding pump, the material liquid to be filtered is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D37/04B01D25/12
Inventor 程剑冰沈夏飞蔡祯
Owner ZHEJIANG HUAZHANG TECH
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