Municipal well lid capable of draining water and preventing backflow

Abstract

The municipal well lid comprises a well lid main body arranged on a well seat, water seepage holes are formed in the well lid main body, a cylindrical flow guide pipe is arranged below the well lid main body, the water seepage holes are located over the cylindrical flow guide pipe, a vertical limiting groove channel is formed in the inner wall of the cylindrical flow guide pipe, and the limiting groove channel is located in the well lid main body. A limiting baffle is arranged at the lowermost part of the limiting channel for blocking, a support is slidably connected in the limiting channel, a buoyancy air bag is connected below the support, the support is initially located at the lowermost part of the limiting channel, a gap is reserved between the buoyancy air bag and a lower port of the cylindrical flow guide pipe, and the lower port of the cylindrical flow guide pipe is blocked by the buoyancy air bag at the uppermost part of the limiting channel of the support. In normal rainwater weather, rainwater flows into the water flow channel through the water seepage holes in the well lid, in heavy rain or extreme rainstorm weather, the water level in the well rises, the buoyancy air bag floats upwards along with rising of the water level and abuts against the sealing rubber pad, and water in the well cannot flow backwards.

Description

Technical Field

[0001] The utility model belongs to the field of infrastructure, and in particular relates to a municipal manhole cover capable of draining water and preventing backflow. Background Art

[0002] Backflow causes pollution to the ground and brings inconvenience to traffic. Therefore, it is urgent to provide a backflow-proof manhole cover to solve the above problems. Utility Model Content

[0003] The purpose of the utility model is to provide a municipal manhole cover that can drain water and prevent backflow, which realizes the anti-backflow effect on the basis of having the main function of drainage.

[0004] In order to achieve the above-mentioned purpose of the utility model, the utility model adopts the following technical solutions:

[0005] A municipal manhole cover that can drain water and prevent backflow includes a manhole cover body arranged on a manhole seat, a water seepage hole provided on the manhole cover body, a cylindrical guide pipe provided below the manhole cover body, the water seepage hole being located directly above the cylindrical guide pipe, a vertical limiting groove being provided on the inner wall of the cylindrical guide pipe, a limiting baffle being provided at the bottom of the limiting groove for blocking, a bracket being slidingly connected in the limiting groove, a buoyancy airbag being connected below the bracket, the bracket being initially located at the bottom of the limiting groove, a gap being left between the buoyancy airbag and the lower end of the cylindrical guide pipe, the bracket being at the top of the limiting groove, and the buoyancy airbag blocking the lower end of the cylindrical guide pipe.

[0006] Further technology of this utility model:

[0007] Preferably, the upper surface of the manhole cover body is a slope with a slope of 2%, and the seepage hole is located at the lowest point of the slope and at the center of the manhole cover body.

[0008] Preferably, ribs are provided between the cylindrical flow guide pipe and the manhole cover body for reinforcement.

[0009] Preferably, a sealing rubber pad is provided at the lower port of the cylindrical flow guide tube.

[0010] Preferably, an arc plate is provided at the upper end of the buoyancy airbag, and the arc plate contacts and seals the lower end of the cylindrical flow guide tube.

[0011] The beneficial effects of the utility model are:

[0012] In normal rainy weather, the water level in the inspection well is low, and rainwater flows into the water flow channel through the seepage holes on the well cover. Under the action of the self-gravity of the rainwater and the self-gravity of the arc plate and the buoyancy airbag, the arc plate is in an open state, forming a stable seepage channel.

[0013] During heavy rain or extreme rainstorms, the water level in the well rises and the buoyancy airbag will float up with the rising water level, pressing against the sealing rubber pad, preventing the water in the well from flowing back.

[0014] Improve the city’s flood control and drainage capabilities, reduce traffic disruptions, property losses and casualties caused by waterlogging, and improve the quality of life of citizens. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 Schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the bottom plane of the manhole cover body;

[0018] The symbols in the figure are: 1 - well seat; 2 - well cover body; 3 - seepage hole; 4 - cylindrical guide pipe; 5 - limiting groove; 6 - limiting baffle; 7 - bracket; 8 - arc plate; 9 - buoyancy airbag; 10 - rib plate; 11 - sealing rubber pad. DETAILED DESCRIPTION

[0019] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0020] like Figure 1-2 The utility model provides a municipal manhole cover that can drain water and prevent backflow, including a manhole cover body arranged on a manhole seat, a water seepage hole provided on the manhole cover body, a cylindrical guide pipe provided below the manhole cover body, the water seepage hole being located directly above the cylindrical guide pipe, a vertical limiting groove provided on the inner wall of the cylindrical guide pipe, a limiting baffle provided at the bottom of the limiting groove for blocking, a bracket is connected to the sliding part in the limiting groove, an arc plate is connected below the bracket, and a buoyancy airbag is provided on the arc plate.

[0021] The function of the arc plate is to effectively block the lower port of the cylindrical guide tube to prevent the soft buoyancy airbag from being directly squeezed into the cylindrical guide tube by water pressure and losing its effect.

[0022] The upper surface of the manhole cover body is a slope with a slope of 2%, and the seepage hole is located at the lowest point of the slope and at the center of the manhole cover body.

[0023] Ribs are provided between the cylindrical flow guide pipe and the manhole cover body for reinforcement.

[0024] The lower end of the cylindrical flow guide tube is provided with a sealing rubber pad, which prevents the hard arc plate from directly contacting the hard cylindrical flow guide tube and fills the gap.

[0025] The utility model uses the buoyancy of water in the well to move the buoyancy air bag together with the arc plate up and down, and controls the opening and closing of the water seepage channel by the rising and falling of the arc plate.

[0026] Specifically, the bracket is initially located at the bottom of the limiting groove, with a gap between the buoyancy airbag and the lower end of the cylindrical guide tube; at the top of the bracket limiting groove, the arc plate contacts and seals the lower end of the cylindrical guide tube.

[0027] It should be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0028] The above content is merely an example and explanation of the structure of the present utility model. Technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined by the claims, they should all fall within the scope of protection of the present utility model.

Claims

1. A municipal manhole cover capable of drainage and backflow prevention, characterized in that: It includes a manhole cover body arranged on the well seat, a water seepage hole is provided on the manhole cover body, a cylindrical guide pipe is provided below the manhole cover body, the water seepage hole is located directly above the cylindrical guide pipe, the inner wall of the cylindrical guide pipe is provided with a vertical limiting groove, the bottom of the limiting groove is provided with a limiting baffle for blocking, a bracket is slidingly connected in the limiting groove, a buoyancy airbag is connected below the bracket, the bracket is initially located at the bottom of the limiting groove, a gap is left between the buoyancy airbag and the lower end of the cylindrical guide pipe, the bracket is at the top of the limiting groove, and the buoyancy airbag blocks the lower end of the cylindrical guide pipe.

2. A municipal manhole cover capable of drainage and backflow prevention according to claim 1, characterized in that: The upper surface of the manhole cover body is a slope with a slope of 2%, and the seepage hole is located at the lowest point of the slope and at the center of the manhole cover body.

3. A municipal manhole cover capable of drainage and backflow prevention according to claim 1, characterized in that: Ribs are provided between the cylindrical flow guide pipe and the manhole cover body for reinforcement.

4. A municipal manhole cover capable of drainage and backflow prevention according to claim 1, characterized in that: A sealing rubber pad is provided at the lower end of the cylindrical flow guide pipe.

5. The municipal manhole cover capable of drainage and preventing backflow according to claim 1, characterized in that: The upper end of the buoyancy airbag is provided with an arc plate, which is sealed by contacting the lower end of the cylindrical flow guide tube with the arc plate.

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