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Cleaning method and system of filter cloth for centrifugal machine in wire cutting waste mortar recycling

A cleaning system and technology for waste mortar, applied in separation methods, chemical instruments and methods, filtration and separation, etc., can solve the problems of no polyethylene glycol impurity cleaning system, high residual impurity content, incomplete cleaning of scraper filter cloth, etc. Achieve the effect of increasing the number of reciprocating use, simple steps and cost saving

Inactive Publication Date: 2014-04-30
KAIFENG WANSHENGXIN MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The problem to be solved by the present invention is: combined with the prior art, the cleaning of the scraper filter cloth is not thorough, the content of remaining impurities is high, the filter cloth needs to be replaced frequently during the production process, and there is no cleaning of the filter cloth for polyethylene glycol impurities. System problems, and then provide a cleaning method and cleaning system that can efficiently clean the scraper filter cloth

Method used

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  • Cleaning method and system of filter cloth for centrifugal machine in wire cutting waste mortar recycling
  • Cleaning method and system of filter cloth for centrifugal machine in wire cutting waste mortar recycling

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Embodiment 1 A kind of cleaning method of centrifuge filter cloth in the waste mortar recovery of wire cutting, concrete steps comprise:

[0038] (1) Alkali washing: Soak the filter cloth in an alkaline solution containing 2%~3% by mass for 20~30 minutes, then clean it to obtain filter cloth A, and apply ultrasonic waves at a frequency of 28~60KHz to filter cloth A Shock treatment for 20-30 minutes to precipitate fine powder and polyethylene glycol until the pH value of the rinse solution after washing is neutral, and filter cloth B is obtained;

[0039] (2) Pickling: Soak the filter cloth B in an acid solution containing 2% to 3% by mass for 20 to 30 minutes, then wash to obtain a filter cloth C, which is subjected to ultrasonic waves at a frequency of 28 to 60KHz Shock treatment for 20 to 30 minutes to precipitate fine powder and polyethylene glycol until the pH value of the rinse solution after washing is neutral, and filter cloth D is obtained;

[0040] (3) Rinse: ...

Embodiment 2

[0048]Embodiment 2 A kind of cleaning method of centrifuge filter cloth in the recycling of wire-cut waste mortar, the specific steps include:

[0049] (1) Pickling: Soak the filter cloth in an acid solution containing 2%~3% by mass for 20~30 minutes, then wash it to obtain filter cloth F, and precipitate fine powder and polyethylene glycol until it is washed The pH value of the flushing solution is neutral, and the filter cloth G is obtained;

[0050] (2) Ultrasonic oscillation: Ultrasonic oscillation at a frequency of 28-60KHz is performed on the filter cloth G for 20-30 minutes to separate out the remaining fine powder and polyethylene glycol in the filter cloth G to obtain the filter cloth H; (3) Rinse: Rinse the filter cloth H with clean water until the pH value of the rinsing solution is neutral to obtain the filter cloth I; (4) Drying: (4) Dry the filter cloth I. The drying method can be drying or air drying.

[0051] In this embodiment, the preferred oscillation freq...

Embodiment 3

[0052] Embodiment 3 A kind of cleaning method of centrifuge filter cloth in the recycling of wire-cut waste mortar, comprising the following steps:

[0053] (1) Ultrasonic vibration: The filter cloth is subjected to ultrasonic vibration treatment at a frequency of 28-60KHz for 20-30 minutes, for example: 22 minutes, 25 minutes, and 27 minutes, to separate out the remaining fine powder and polyethylene glycol in the filter cloth, and obtain Filter cloth J;

[0054] (2) Rinse: Rinse the filter cloth J with clean water until the pH value of the rinsing liquid is neutral to obtain the filter cloth K;

[0055] (3) Drying: The filter cloth K is dried. The drying method can be drying or air drying.

[0056] In order to see the comparison more conveniently, the three filter cloths cleaned in Example 1-3 and one unused filter cloth were used, and four scrapers were used to install the four filter cloths, and the same raw materials were selected, and the four scrapers started Using t...

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Abstract

The invention relates to a cleaning method for filter cloth of a centrifugal machine, and particularly relates to a cleaning method and system for filter cloth of a centrifugal machine in wire cutting waste mortar recycling, aiming to provide a cleaning method and a cleaning system which can clean filter cloth of a scraper efficiently so as to solve the problems that in the prior art, the filter cloth of the scraper is not cleaned thoroughly, the residual impurities are high in content, and the filter cloth is required to be replaced frequently in the production process. The cleaning method comprises the following steps of (1) alkaline washing, (2) acid pickling, (3) washing, and (4) drying. The cleaning method and the cleaning system which are provided by the invention have the positive beneficial effects that the method is used for cleaning fine powder and polyethylene glycol in clearances of the filter cloth of the scraper clearly by the combined action of acid pickling, alkaline washing and ultrasonic wave, the filter cloth of the scraper can be effectively cleaned, the service life of the filter cloth is prolonged, and the cost is saved.

Description

technical field [0001] The invention relates to a cleaning method for a filter cloth for a centrifuge, in particular to a cleaning method and a cleaning system for a centrifuge filter cloth in the recovery of wire-cut waste mortar. Background technique [0002] Filter cloth is a filter medium woven from natural fibers or synthetic fibers. Includes metal mesh or strainer. Filter media woven from natural or synthetic fibers. Commonly used materials are cotton, hemp, wool, cocoon silk, asbestos fiber, glass fiber and some synthetic fibers. [0003] In the field of photovoltaic production, most of the recycling of waste mortar adopts PZG horizontal scraper centrifuge. During the working process of the centrifuge, the waste mortar is filtered by scraper filter cloth. Since the silicon carbide particles are small and contain polyethylene glycol, the service life of the scraper filter cloth is short and the replacement frequency of the filter cloth is high. In addition to the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D41/00
Inventor 李曼陈鹏飞张冬林冯勇涛
Owner KAIFENG WANSHENGXIN MATERIALS
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