Multi-stage centrifugal pump with residue filtering and removing function for liquid drainage

Abstract

The invention discloses a multi-stage centrifugal pump with a residue filtering and removing function for liquid drainage, and relates to the technical field of centrifugal pumps. The multi-stage centrifugal pump with the residue filtering and removing function for liquid drainage is characterized in that a fixing block is connected to a threaded rod at the output end of a motor, a scraping plateis connected to the lower end of an L-shaped rod on the side surface of the fixing block, a first filter screen connected with the side wall of a cavity is arranged at the lower end of the scraping plate, a water pump is prevented from being blocked by garbage, the working efficiency is improved, and meanwhile, follow-up sewage treatment is facilitated; and a second filter screen and a third filter screen are connected to a first spring and a second spring in a first sliding groove and a second sliding groove respectively, a third sliding groove and a fourth sliding groove corresponding to thesecond filter screen and the third filter screen respectively are formed in a supporting plate, a third spring in the third sliding groove is connected with the second filter screen, a fourth springin the fourth sliding groove is connected with the third filter screen, a fourth filter screen is embedded in the supporting plate, and the water pump is arranged on the bottom surface of a mounting cavity, so that garbage collection is facilitated, and water in the garbage can be pumped back into the centrifugal pump.

Description

technical field [0001] The invention relates to the technical field of water pumps, in particular to a multi-stage centrifugal pump capable of discharging liquid and having the function of removing slag from the filter. Background technique [0002] Sewage usually refers to the discharged water from life and production that is polluted to a certain extent. Direct discharge of sewage will cause irreversible pollution. Therefore, industrial production wastewater and domestic wastewater must be purified before discharge to filter out harmful substances in sewage. Sewage Treatment is the process of purifying sewage to meet the water quality requirements of being discharged into a certain water body or reused. Sewage treatment is widely used in construction, agriculture, transportation, energy, petrochemical, environmental protection, urban landscape, medical treatment, catering, etc. field, and more and more people have entered the daily life of ordinary people. Multistage centr...

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Problems solved by technology

[0006] Aiming at the problems in the prior art, the object of the present invention is to provide a multi-stage centrifugal pump with the function of removing slag from the filter, so as to solve the problem that the existing centrifugal pump does not have the function of filtering and removing the filtered garbage. When pumping out, it is easy to be blocked by the flocculent garbage residue in the sewage, and it is necessary to stop the pumping work, and then manually remove the blocked garbage, resulting in low work efficiency and waste of human resources.

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