On-line cleaning device of calcium carbonate filter cloth and cleaning method

Abstract

The invention discloses an on-line cleaning device of calcium carbonate filter cloth and a cleaning method. The device comprises a calcium carbonate filter; a primary cleaning zone, a secondary cleaning zone, an absorbing and drying zone, a discharging zone, a filter cloth regeneration zone and a charging zone are arranged in the calcium carbonate filter; a water wash spray head is arranged in the filter cloth regeneration zone; an acid distribution tank is arranged at the bottom of the filter; the acid distribution tank is connected with an acid proof pump; an acid wash spray head is arranged in the absorbing and drying zone along the radial direction of a filter disc; the acid wash spray head is connected with the acid proof pump through a pipeline; the cleaning method comprises the steps that 10 to 20 percent of hydrochloric acid solution is fed to the absorbing and drying zone of the filter, and the acid wash spray head sprays and washes filter cloth in a sectorial area; the filter cloth washed by the hydrochloric acid solution is further fed to the filter cloth regeneration zone to be washed through clear water, and the running speed of the filter is set according to the cleaning situation; and the filter cloth is circularly washed for 5 to 10 times according to the cleaning situation of the filter cloth.

Description

technical field [0001] The invention relates to cleaning of industrial filter cloths, in particular to an online cleaning device and cleaning method for filtering calcium carbonate filter cloths. Background technique [0002] At present, in industry, filter cloth has become the most widely used filter medium. Industrial filter cloth is a filter medium woven from natural fibers and synthetic fibers, mainly used for solid-liquid separation and industrial dust removal. However, during the use of the filter cloth, the filtered material will be squeezed and stick to the filter cloth, which will affect the filtering effect of the filter cloth, increase the water content of the material, and fail to meet the technical requirements, so the filter cloth will work for a certain period must be cleaned afterwards. [0003] At present, the method of cleaning calcium carbonate filter cloth can be divided into two types: online cleaning and offline cleaning. The adhesion strength be...

AI Technical Summary

Problems solved by technology

However, during the use of the filter cloth, the filtered material will be squeezed and stick to the filter cloth, which will affect the filtering effect of the filter cloth, increase the water content of the material, and fail to meet the technical requirements, so the filter cloth will work for a certain period must be cleaned after

[0003] At present, the method of cleaning calcium carbonate filter cloth can be divided into two types: online cleaning and offline cleaning. The adhesion strength between calcium particles and filter cloth is high, and the effect of online cleaning is not ideal at present

[0004] As can be seen from the above, the online cleaning device of the above-mentioned existing calcium carbonate filter cloth obviously has defects in actual use, and needs to be improved.

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