Environment-friendly filter equipment for municipal drainage

Abstract

The invention discloses an environment-friendly filter equipment for municipal drainage, and relates to the technical field of municipal drainage. The environment-friendly filter equipment for municipal drainage comprises a manhole cover body, a drainage hole and a downward pressing mechanism. The lower end of a rotary shaft extends out of the lower surface of the manhole cover body and drives a rotary plate to turn through a first transmission mechanism. A reset mechanism for the rotary plate to turn and reset is arranged on the surface of the supporting plate. A sliding block is in sliding connection with the surface of the supporting plate. A U-shaped moving block is fixedly connected with the front side of the sliding block. The rotary plate drives the U-shaped moving block to shift through a second transmission mechanism. The U-shaped moving block drives two gas pass channel shielding mechanisms to move up and down alternatively through a third transmission mechanism. A second piston is in sliding connection with the inner wall of each of two gas storage chambers. The downward pressing plate is driven to shift by being driven by the second pistons through a fourth transmissionmechanism. A linkage rod is driven by the downward pressing mechanism. A filter screen is fixedly installed on the inner wall of the drainage hole. According to the environment-friendly filter equipment for municipal drainage, because of cooperation among the structures, the technical problems provided in the background technology are effectively solved.

Description

technical field [0001] The invention relates to the technical field of municipal drainage, in particular to an environmental protection filtering device for municipal drainage. Background technique [0002] For example, Chinese patent CN201810249018.3 discloses a self-blocking municipal drainage manhole cover. When the invention is used, if pedestrians or vehicles step on or roll over the manhole cover body, the metal plate will overcome the first spring and carry out a small distance downward after the force is applied. Moving (the existence of the sponge board can effectively buffer the downward energy and minimize the ups and downs of pedestrians and vehicles), the metal plate drives the connecting rod and the piston down, compressing the air into the annular airbag through the one-way valve, and the air pressure in the annular airbag At the same time as it is raised, the movable iron block overcomes the spring force of the second spring and moves upward for a short dista...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an environmental protection filter device for municipal drainage, which has the effect of using two air storage chambers alternately and circularly, so as to achieve the effect of not affecting each other in the process of replenishing air and exhausting, and solves the problem of the prior art. During the exhaust process, since the movable rod is pressed against the lower end of the metal plate, if a pedestrian or vehicle passes by the metal plate at this time, the metal plate will go down, and push the movable rod and the movable iron block down, and then the movable iron block will go down. The exhaust duct is blocked instantly, so that the exhaust cannot be continued, which affects the effect of purging and cleaning

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