Low-energy-consumption sewage filtering device

Abstract

The invention discloses a low-energy-consumption sewage filtering device which comprises a main body unit, a filtering unit, a sludge discharging unit and an electric control unit, the main body unitcomprises a bottom plate, a positioning plate, a base and a sludge collecting box, and the positioning plate, the base and the sludge collecting box are sequentially arranged at the top of the bottomplate from left to right; hydraulic cavities are formed in the two ends in the base, and a first piston is slidably arranged in each hydraulic cavity, supporting columns are vertically arranged at thetwo ends of the top of the first piston, the top ends of the four supporting columns extend to the top of the base to be fixedly connected with a filtering box, and the supporting columns extend intothe filtering box. In the process that the sliding rod pushes the concentric-square-shaped frame to move upwards, the second magnetic strip located on one side of the movable strip can continuously get close to the first magnetic strips, the movable strip can be continuously pushed to move through repulsive force generated by the first magnetic strips and the second magnetic strips, and then gasin the strip-shaped movable cavity is exhausted from the vent holes of the exhaust pipe and impacts the bottom of the filter screen, and sludge is prevented from depositing at the top of the filter screen.

Description

technical field [0001] The invention relates to the technical field of sewage filtering devices, in particular to a sewage filtering device with low energy consumption. Background technique [0002] With the acceleration of urbanization, the discharge of urban sewage has increased rapidly, and the situation of water pollution is severe, which is becoming an important factor restricting development. Sewage treatment is an important link in the treatment of water pollution. In the process of sewage treatment, the sewage Filtering is an essential process. [0003] When treating sewage containing a lot of sludge, the sludge in the sewage must first be preliminarily filtered. In the prior art, the filter screen will be set in the filter box, and the sewage will flow through the filter screen to remove the sludge. Attached to the filter net, when the amount of sewage is large, a large amount of sludge will quickly accumulate on the filter net, which will block the water flow, gre...

AI Technical Summary

Problems solved by technology

[0003] When treating sewage containing a lot of sludge, the sludge in the sewage must first be preliminarily filtered. In the prior art, the filter screen will be set in the filter box, and the sewage will flow through the filter screen to remove the sludge. Attached to the filter net, when the amount of sewage is large, a large amount of sludge will quickly accumulate on the filter net, which will block the water flow, greatly reduce the flow rate of sewage, and reduce the treatment efficiency

If you want to clean the filter screen, you must suspend the process, stop the inflow of sewage, take out the filter screen from the filter box to clean or replace it, and then put the filter screen back into the filter box to restart the work of sewage filtration. The overall work efficiency of the filter box in the prior art is low, and it is inconvenient to use

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