Well lid capable of preventing sewage backflow

Abstract

A well lid capable of preventing sewage backflow relates to the technical field of well lid sewage backflow prevention and comprises a fixing device and a well lid body, the well lid body is arranged in the fixing device and composed of a cover plate, a limiting frame and a floating block, and the limiting frame and the floating block are arranged on the cover plate; the manhole cover fixing device is reasonable and practical in structure and easy to operate, the manhole cover of the inspection well can be fixed conveniently, drainage of the inspection well is facilitated, and sewage in the inspection well is prevented from flowing back.

Description

Technical Field

[0001] The utility model relates to the technical field of manhole covers preventing sewage backflow, in particular to a manhole cover preventing sewage backflow. Background Art

[0002] As is known to all, sewer is a kind of urban public facility. Sewer is the pipe for buildings to discharge sewage and rainwater. It is also the underground passage for cities, factories or villages to remove sewage and rainwater. Sewer manholes will be set up on the ground, and the manholes will be equipped with manhole covers. When it rains, the manholes are used to drain water into the sewers. Ordinary manhole covers cannot control the sewage backflow in the manholes. However, due to geographical conditions, some manholes are located too low. When it rains heavily and the amount of rain is too high, the manholes that are too low not only cannot drain water, but also the sewage in the sewer will flow back from the manholes. The sewage flowing out of the manholes will not only affect the surrounding environment, but also smell bad. In the later stage, it is necessary to clean the stains at the backflow of the manholes. For this reason, we propose a manhole cover that can prevent sewage backflow. Utility Model Content

[0003] In order to overcome the deficiencies in the background technology, the utility model discloses a manhole cover for preventing sewage backflow, by installing a fixing device on the sewer manhole opening and installing the manhole cover on the fixing device, so as to achieve the purpose of preventing sewage in the manhole from backflowing.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0005] A manhole cover for preventing sewage backflow comprises a fixing device and a manhole cover. The fixing device is provided with the manhole cover, the manhole cover is composed of a cover plate, a limit frame and a floating block, and the cover plate is provided with the limit frame and the floating block.

[0006] The fixing device is composed of a fixing block and a sealing gasket. The fixing block is a cylindrical structure. A fixing hole is provided in the middle position of the upper surface of the fixing block. The fixing hole passes through the fixing block. A cover plate is provided in the fixing hole on the fixing block. A fixing groove is provided on the inner wall of the fixing hole on the fixing block. A sealing gasket is provided in the fixing groove on the fixing block.

[0007] The sealing gasket is an annular structure, the outer wall diameter of the sealing gasket is the same as the inner diameter of the fixing groove on the fixing block, the inner diameter of the sealing gasket is the same as the diameter of the fixing hole on the fixing block, and the sealing gasket is arranged on the top surface of the inner wall of the fixing groove on the fixing block.

[0008] A drainage hole is provided on the inner wall of the fixing groove on the fixing block on one side close to the lower surface, at least one drainage hole is provided, and the drainage holes are arranged in order on the fixing block.

[0009] A limit frame is provided on the outer wall of the cover plate near the lower surface, the limit frame is stuck in the fixed groove on the fixed block, a sealing gasket is provided on the upper surface of the limit frame, the sealing gasket on the limit frame corresponds to the position of the sealing gasket in the fixed groove on the fixed block, and the cover plate is movably connected to the fixed block.

[0010] A floating block is arranged on the lower surface of the cover plate, and the buoyancy of the floating block is greater than the gravity of the cover plate and the limiting frame.

[0011] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:

[0012] The utility model is a manhole cover for preventing sewage backflow, and a fixing device is installed on the manhole opening of the sewer, and the manhole cover is installed on the fixing device, so as to achieve the purpose of preventing the sewage in the manhole from flowing back. The utility model has a reasonable and practical structure and is easy to operate. It is not only convenient to fix the manhole cover of the manhole and drain the manhole, but also prevents the sewage in the manhole from flowing back. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0014] Figure 2 This is a schematic diagram of the fixing device structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the manhole cover structure of the utility model;

[0016] 1. Fixing device; 2. Manhole cover; 3. Fixing hole; 4. Drain hole; 5. Fixing groove; 6. Sealing gasket; 7. Fixing block; 8. Cover plate; 9. Limiting frame; 10. Floating block. DETAILED DESCRIPTION

[0017] The present invention can be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.

[0018] Combined with Figures 1 to 3 A manhole cover for preventing sewage backflow comprises a fixing device 1 and a manhole cover 2. The fixing device 1 is provided with the manhole cover 2. The manhole cover 2 is composed of a cover plate 8, a limit frame 9 and a floating block 10. The cover plate 8 is provided with the limit frame 9 and the floating block 10.

[0019] The fixing device 1 is composed of a fixing block 7 and a sealing gasket 6. The fixing block 7 is a cylindrical structure. A fixing hole 3 is provided in the middle position of the upper surface of the fixing block 7. The fixing hole 3 penetrates the fixing block 7. A cover plate 8 is provided in the fixing hole 3 on the fixing block 7. A fixing groove 5 is provided on the inner wall of the fixing hole 3 on the fixing block 7. A sealing gasket 6 is provided in the fixing groove 5 on the fixing block 7.

[0020] The sealing gasket 6 is an annular structure, the outer wall diameter of the sealing gasket 6 is the same as the inner diameter of the fixing groove 5 on the fixing block 7, the inner diameter of the sealing gasket 6 is the same as the diameter of the fixing hole 3 on the fixing block 7, and the sealing gasket 6 is arranged on the top surface of the inner wall of the fixing groove 5 on the fixing block 7. The sealing gasket 6 serves to seal the gap between the fixing block 7 and the limit frame 9 on the cover plate 8.

[0021] A drainage hole 4 is provided on the inner wall of the fixing groove 5 on the fixing block 7 on one side close to the lower surface. At least one drainage hole 4 is provided and the drainage holes 4 are arranged in an orderly manner on the fixing block 7 .

[0022] A limit frame 9 is provided on the outer wall of the cover plate 8 near the lower surface, and the limit frame 9 is stuck in the fixed groove 5 on the fixed block 7. A sealing gasket 6 is provided on the upper surface of the limit frame 9. The sealing gasket 6 on the limit frame 9 corresponds to the position of the sealing gasket 6 in the fixed groove 5 on the fixed block 7. The cover plate 8 is movably connected with the fixed block 7. When the water volume in the manhole is too high and reaches the height of the manhole cover plate 8, the floating block 10 under the cover plate 8 floats up, and the floating block 10 floats up and drives the cover plate 8 to move upward. The limit frame 9 on the cover plate 8 limits the cover plate 8, and the limit frame 9 is against the top of the inner wall of the fixed groove 5 on the fixed block 7, and the limit frame 9 blocks the drainage hole on the fixed block 7.

[0023] A floating block 10 is provided on the lower surface of the cover plate 8 , and the buoyancy of the floating block 10 is greater than the gravity of the cover plate 8 and the limiting frame 9 .

[0024] Embodiment 1, the manhole cover for preventing sewage backflow, when in use, the fixing block 7 is fixed to the manhole opening of the sewer, and the manhole cover 2 is installed in the fixing block 7. When it rains, rainwater is discharged into the manhole through the gap between the cover plate 8 and the fixing block 7 and the drainage hole 4 on the fixing block 7. When the water level in the manhole is too high and reaches the height of the manhole cover plate 8, the floating block 10 under the cover plate 8 floats up. The buoyancy of the floating block 10 is greater than the gravity of the cover plate 8 and the limit frame 9. The floating block 10 floats up. 0 floats and drives the cover plate 8 to move upward, and the limit frame 9 on the cover plate 8 limits the cover plate 8, and the limit frame 9 presses on the top of the inner wall of the fixed groove 5 on the fixed block 7, and the limit frame 9 blocks the drainage hole on the fixed block 7, and the sealing gasket 6 seals the gap between the fixed block 7 and the limit frame 9 on the cover plate 8; the utility model has a reasonable and practical structure and is easy to operate. It is not only convenient to fix the manhole cover of the manhole and drain the manhole, but also prevents the sewage in the manhole from flowing back.

[0025] The parts of the present invention that are not described in detail are prior art. Although the present invention is specifically demonstrated and introduced in conjunction with the preferred implementation scheme, there are many methods and ways to implement the technical solution. The above is only a preferred implementation scheme of the present invention. However, technical personnel in the relevant field should understand that various changes can be made to the present invention in form and details without departing from the spirit and scope of the present invention as defined in the attached claims, which are all within the scope of protection of the present invention.

Claims

1. A manhole cover for preventing sewage backflow, comprising a fixing device (1) and a manhole cover (2), wherein the manhole cover (2) is arranged inside the fixing device (1), and wherein: The manhole cover (2) is composed of a cover plate (8), a limit frame (9) and a floating block (10), and the limit frame (9) and the floating block (10) are provided on the cover plate (8).

2. The manhole cover for preventing sewage backflow according to claim 1 is characterized in that: The fixing device (1) is composed of a fixing block (7) and a sealing gasket (6); the fixing block (7) is a cylindrical structure; a fixing hole (3) is provided in the middle of the upper surface of the fixing block (7); the fixing hole (3) passes through the fixing block (7); a cover plate (8) is provided in the fixing hole (3) on the fixing block (7); a fixing groove (5) is provided on the inner wall of the fixing hole (3) on the fixing block (7); and a sealing gasket (6) is provided in the fixing groove (5) on the fixing block (7).

3. The manhole cover for preventing sewage backflow according to claim 2 is characterized in that: The sealing gasket (6) is an annular structure, the outer wall diameter of the sealing gasket (6) is the same as the inner diameter of the fixing groove (5) on the fixing block (7), the inner diameter of the sealing gasket (6) is the same as the diameter of the fixing hole (3) on the fixing block (7), and the sealing gasket (6) is arranged on the top surface of the inner wall of the fixing groove (5) on the fixing block (7).

4. A manhole cover for preventing sewage backflow according to claim 3, characterized in that: A drainage hole (4) is provided on the inner wall of the fixing groove (5) on the fixing block (7) on one side close to the lower surface, at least one drainage hole (4) is provided, and the drainage holes (4) are arranged in an orderly manner on the fixing block (7).

5. The manhole cover for preventing sewage backflow according to claim 4 is characterized in that: A limit frame (9) is provided on the outer wall of the cover plate (8) at a position close to the lower surface, the limit frame (9) is clamped in the fixed groove (5) on the fixed block (7), a sealing gasket (6) is provided on the upper surface of the limit frame (9), the sealing gasket (6) on the limit frame (9) corresponds to the position of the sealing gasket (6) in the fixed groove (5) on the fixed block (7), and the cover plate (8) is movably connected to the fixed block (7).

6. A manhole cover for preventing sewage backflow according to claim 5, characterized in that: A floating block (10) is provided on the lower surface of the cover plate (8), and the buoyancy of the floating block (10) is greater than the gravity of the cover plate (8) and the limiting frame (9).

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