Online self-cleaning medium filtering device

Abstract

The invention discloses an online self-cleaning medium filtering device. The online self-cleaning medium filtering device comprises a water inlet pipe, a backwashing one-way valve, a water inlet one-way valve, a shell, a shell filtering material, an inner cylinder body, an inner cylinder body filtering material, a lower screen plate, a water distributor, a control valve, a backwashing water collecting chamber, a water outlet collecting chamber, a backwashing pump, a water outlet pipe, a blow-off pipe, an upper screen plate and an electric control system. The method is characterized in that a plurality of filtering spaces which work independently are arranged in the shell; each filtering space can work independently or simultaneously as required; when a certain filtering space needs to be self-cleaned, the backwashing pump is started, a filtering liquid is pumped, backwashing is performed on the filtering materials in the filtering space, backwashing water generated by the backwashing is distributed to other filtering spaces to be filtered, and suspended solids are intercepted at the lower part of the inner cylinder body and need to be discharged regularly. And all the filtering spaces can be self-cleaned through automatic control, so that online self-cleaning of the medium filtering device can be realized, and no cleaning wastewater is generated and discharged. The online self-cleaning medium filtering device can be used for updating the existing medium filter, the use efficiency of the medium filter can be improved, a large amount of backwashing wastewater is saved, and the investment is reduced.

Description

technical field [0001] The invention belongs to the field of water treatment, and relates to an online self-cleaning medium filter device, which is widely used as a device for removing suspended solids in wastewater treatment, water purification treatment and liquid treatment, and the present invention can solve the problem that the existing medium filter needs to be shut down for cleaning And the problem of producing a large amount of cleaning wastewater can ensure the operation of the media filter for a long period of time with high efficiency. Background technique [0002] Media filters are widely used in water treatment, chemical, energy and other industries. However, as the use time increases, the filter will inevitably have dirt clogging and adhesion. Due to dirt clogging and adhesion on the inside and surface of the medium, the filtration efficiency and water quality of the filter will decrease, and the resistance will increase. The normal operation of the filter req...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is the problems of the media filter in the prior art due to dirt adhesion and clogging, reduced efficiency after long-term use, frequent shutdown for cleaning, and generation of sewage discharge waste water; an online self-cle

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