a manhole cover

Abstract

The invention discloses an inspection well cover, which includes a well cover installed in the well head, the well cover includes a base and a movable plate, the base is installed at the well head, and the upper end surface of the base has a circular structure. In the water inlet chamber, the movable plate is installed in the water inlet chamber, and more than one main drainage hole is opened around the water inlet chamber on the bottom surface of the water inlet chamber, and the bottom surface of the movable plate facing each main drainage hole is provided with a corresponding The sealing block passes through the main drainage hole and protrudes from the lower end surface of the base. The invention has very good safety performance, can lead to the main drainage hole at the bottom when the drainage volume is large, and can lift the movable plate to open the main drainage hole after the water volume in the sewer increases. The whole well cover adopts a sealed structure, The safety is increased, and the floating body at the bottom can be squeezed by external force, so as to increase the flow rate of the water flow and connect the auxiliary drainage hole and the main drainage hole.

Description

technical field [0001] The invention relates to the field of municipal engineering, in particular to a manhole cover. Background technique [0002] As an important part of the municipal drainage system, manhole covers can be seen everywhere in urban roads. It is laid on the road surface with sewers and is level with the road surface. The main function of the manhole cover is to transfer the rainwater accumulated on the road into the sewer, thereby keeping the road dry and avoiding the problem of slippage caused by too much water on the road; another function is to serve as the entrance of the sewer node, so that the sewer Each location has access to facilitate cleaning operations. [0003] For the safety of pedestrians, the drainage hole of the manhole cover should not be too large, but it will also bring another problem, that is, poor drainage. In case of heavy rain, the road surface is easy to accumulate water, and it is difficult to discharge it to the sewer in time, but...

AI Technical Summary

Problems solved by technology

[0003] For the safety of pedestrians, the drainage hole of the manhole cover should not be too large, but it will also bring another problem, that is, poor drainage. In case of heavy rain, the road surface is easy to accumulate water, and it is difficult to discharge it to the sewer in time, but if the drainage hole is too large , it is easy to cause vehicle tires and pedestrians' feet to get stuck, causing safety problems;

[0004] Moreover, if the drain hole is made small, it is easy to block the solid matter in the rainwater, resulting in the sealing of the entire manhole cover, and then the water cannot be discharged into the sewer

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