Well lid with anti-backflow function

Abstract

The utility model provides a well lid with an anti-backflow function, and belongs to the technical field of municipal engineering. Comprising a well body, a mounting base is arranged outside the well body, a well lid body is arranged at the top of the well body, and a filtering assembly is arranged in the well lid body; the anti-backflow assembly is used for preventing water flow in a well from being sprayed out, the anti-backflow assembly is connected with the well body, a first limiting groove is formed in the top of the well body, the interior of the first limiting groove is tightly attached to the well lid body, and triangular reinforcing ribs are fixedly connected to the outer portion of the well body; and the bottom of the reinforcing rib is fixedly connected with the top of the mounting seat. According to the utility model, by introducing the anti-backflow assembly, rainwater can be effectively prevented from reversely flowing into the road surface through the well lid during heavy rainfall in a short time, thereby avoiding the weighting of accumulated water on the road surface and the formation of local waterlogging, and ensuring the normal operation of a municipal drainage system and the traffic safety of the road surface.

Description

Technical Field

[0001] The utility model relates to the technical field of municipal engineering, in particular to a manhole cover with an anti-backflow function. Background Art

[0002] In municipal construction, there are many manhole covers on the road. Since the discharge of wastewater requires the use of sewer pipes, manholes and manhole covers are installed at intervals on the sewer pipes for inspection and drainage.

[0003] Patent Publication No. CN 210684791 U proposes a manhole cover for municipal engineering projects. The cover comprises a cover body and a top cover. The cover body has an opening in the middle, and the top cover is mounted on the cover body and rotates to open or cover the opening. The top cover has a locking slot in the sidewall, and a locking rod is provided within the cover body. By driving the locking rod and inserting it into the locking slot, the top cover maintains its position covering the opening. This utility model provides a manhole cover for municipal engineering projects that significantly accelerates drainage and prevents waterlogging on the road.

[0004] In the above case, when a short period of heavy rainfall occurs, the rainwater inside the pipe network system cannot be discharged in time, and will flow back into the road surface through the manhole cover, causing backflow. Not only will the accumulated water on the road surface be unable to be discharged in time, but the amount of water accumulated on the road surface will also increase, causing local waterlogging. Therefore, the utility model provides a manhole cover with an anti-backflow function to meet the needs. Utility Model Content

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A manhole cover with an anti-backflow function includes a well body, a mounting seat is provided on the outside of the well body, a manhole cover body is provided on the top of the well body, and a filter component is provided inside the manhole cover body; an anti-backflow component, which is used to prevent water in the well from spraying out, and the anti-backflow component is connected to the well body.

[0007] Optionally, a No. 1 limiting groove is opened on the top of the well body, the interior of the No. 1 limiting groove fits tightly with the manhole cover body, and the outside of the well body is fixedly connected with a triangular reinforcing rib, and the bottom of the reinforcing rib is fixedly connected to the top of the mounting seat.

[0008] Optionally, the filter assembly includes a No. 2 limiting groove opened in the inner wall of the well body, a separation plate is clamped inside the No. 2 limiting groove, an inclined guide portion is provided on the top of the separation plate, and a guide hole is opened inside the separation plate.

[0009] Optionally, the backflow prevention assembly includes a baffle fixedly connected to the inner wall of the well body, the baffle is located directly below the guide part, a sealing hole is provided at the center of the baffle, a sealing protrusion is provided on the inner wall of the sealing hole, and a deformation cavity is provided inside the sealing protrusion.

[0010] Optionally, a fixed block is fixedly connected to the inner wall of the well body, a guide column is fixedly connected between the top of the fixed block and the baffle plate, a lifting plate is slidably connected to the outside of the guide column, a return spring is fixedly connected between the top of the lifting plate and the bottom of the baffle plate, and the return spring is sleeved on the outside of the guide column.

[0011] Optionally, a sealing disk is fixedly connected to the top of the lifting plate, and a sealing groove is provided on the outside of the sealing disk, and the sealing groove is adapted to the sealing protrusion.

[0012] Optionally, an air cavity is provided inside the lifting plate, and a conical force-bearing surface is provided at the bottom of the lifting plate.

[0013] Compared with the prior art, the present invention has at least the following beneficial effects:

[0014] In the above scheme, by introducing anti-backflow components, it can effectively prevent rainwater from flowing back into the road through the manhole cover during short-term heavy rainfall, avoiding the aggravation of road waterlogging and the formation of local waterlogging, and ensuring the normal operation of the municipal drainage system and road traffic safety.

[0015] In the above solution, the triangular reinforcement ribs arranged on the outside of the well body not only improve the load-bearing capacity of the manhole cover, but also enhance the stability and compressive resistance of the entire manhole cover structure through close connection with the mounting seat, thereby reducing the risk of damage caused by external force impact or vehicle running over.

[0016] In the above solution, the built-in filtering component can effectively filter out impurities in rainwater, such as garbage, leaves, etc., to prevent these debris from entering the sewer pipes and causing blockages, thereby improving drainage efficiency and extending the service life of the pipes. The inclined diversion part and the opened diversion hole design are conducive to the rapid collection and discharge of rainwater, reducing the residence time of water in the well, speeding up drainage and reducing the risk of road waterlogging.

[0017] In the above scheme, through the cooperation of structures such as the fixed block, guide column, lifting plate, and reset spring, when the water level in the well drops, the lifting plate can automatically reset, driving the sealing disk to fit tightly with the sealing protrusion, and re-forming a sealed state without the need for manual intervention, which is convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of a manhole cover with anti-backflow function;

[0019] Figure 2 This is a schematic diagram of the explosion structure of the manhole cover;

[0020] Figure 3 Schematic diagram of the coordinated three-dimensional structure of the manhole cover;

[0021] Figure 4 Schematic diagram of the coordinated three-dimensional structure of the manhole cover.

[0022] [Reference Signs]

[0023] 1. Well body; 2. Mounting seat; 201. Reinforcement rib; 3. Well cover body; 4. Separation plate; 401. Diversion part; 5. Anti-backflow assembly; 501. Baffle; 502. Sealing hole; 503. Lifting plate; 504. Sealing disk; 6. Fixing block; 7. Guide column. DETAILED DESCRIPTION

[0024] The manhole cover with anti-backflow function provided by the present invention is described in detail below with reference to the accompanying drawings and specific embodiments; at the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are preferred embodiments, and for some well-known technologies, those skilled in the art may also adopt other alternative methods.

[0025] like Figures 1 to 4As shown, an embodiment of the present invention provides a manhole cover with an anti-backflow function, including a well body 1, a mounting seat 2 is provided on the outside of the well body 1, a manhole cover body 3 is provided on the top of the well body 1, and a filter assembly is provided inside the manhole cover body 3; a No. 1 limiting groove is provided on the top of the well body 1, and the interior of the No. 1 limiting groove is tightly fitted with the manhole cover body 3, and a triangular reinforcement rib 201 is fixedly connected to the outside of the well body 1, and the bottom of the reinforcement rib 201 is fixedly connected to the top of the mounting seat 2, and the filter assembly includes a No. 2 limiting groove provided in the inner wall of the well body 1, and a separation plate 4 is clamped inside the No. 2 limiting groove, and the top of the separation plate 4 is provided with an inclined guide portion 401, and the interior of the separation plate 4 is provided with a guide hole. First, the well body 1 is firmly installed in the predetermined position through the mounting seat 2. The triangular reinforcement ribs 201 on the exterior of the manhole body 1 are tightly fixed to the top of the mounting base 2, enhancing the overall stability and load-bearing capacity of the manhole cover. When rainwater falls onto the manhole cover body 3, it first enters the manhole body 1 through the opening of the manhole cover body 3. The separator plate 4 below the manhole cover body 3 and the inclined guide 401 on its top play a key role, guiding rainwater along the guide 401 toward the center of the separator plate 4 and then into the deeper parts of the manhole body 1 through the guide holes provided within the separator plate 4. During this process, impurities in the rainwater (such as leaves and garbage) are blocked by the separator plate 4 and retained above it, achieving a preliminary filtering effect. The rational design of the separator plate 4 and its top guide 401 effectively filters impurities in the rainwater, reducing the risk of sewer pipe blockage and improving drainage efficiency. The addition of the triangular reinforcement ribs 201 significantly enhances the overall stability and load-bearing capacity of the manhole cover, extending its service life. The rational overall design and tight coordination between the various components effectively improve the efficiency of rainwater collection and discharge, reducing the risk of road flooding.

[0026] like Figures 1 to 4As shown, the backflow prevention component 5 is used to prevent the water flow in the well from spraying out. The backflow prevention component 5 is connected to the well body 1. The backflow prevention component 5 includes a baffle 501 fixedly connected to the inner wall of the well body 1. The baffle 501 is located directly below the guide portion 401. A sealing hole 502 is provided at the center of the baffle 501. A sealing protrusion is provided on the inner wall of the sealing hole 502. A deformation cavity is provided inside the sealing protrusion. A fixing block 6 is fixedly connected to the inner wall of the well body 1. A guide column 7 is fixedly connected between the top of the fixing block 6 and the baffle 501. The outer sliding connection of the guide column 7 is provided with a lifting screw. A return spring is fixedly connected between the top of the lowering plate 503 and the bottom of the baffle 501, and the return spring is sleeved on the outside of the guide column 7. A sealing disk 504 is fixedly connected to the top of the lifting plate 503. The sealing disk 504 has a sealing groove on the outside, which is compatible with the sealing protrusion. The lifting plate 503 has an air cavity inside. The bottom of the lifting plate 503 has a conical force-bearing surface. Under normal circumstances, the water level in the well body 1 is low. After entering the well body 1 through the manhole cover body 3, water is initially filtered by the filter assembly and flows along the guide portion 401 to the baffle 501. At this time, the lifting plate 503 is separated from the baffle 501 by the action of the return spring. The sealing disk 504 contacts the sealing hole 502, and the water flows normally. In extreme weather such as heavy rain, when the water level in the well rises rapidly, the strong impact of the water flow acts on the conical force-bearing surface at the bottom of the lifting plate 503. The conical design effectively converts the water flow pressure into an upward thrust. When this thrust exceeds the elastic force of the return spring, the lifting plate 503 begins to slide upward along the guide column 7. As the lifting plate 503 rises, the sealing disc 504 gradually embeds into the sealing protrusion in the sealing hole 502 until it is completely sealed. During this process, the close fit between the sealing groove and the sealing protrusion forms an effective seal, preventing water from continuing to flow upward, thereby preventing water from flowing back into the well. This design does not require manual intervention and can automatically adjust the sealing state according to changes in the water level in the well, effectively preventing water from flowing back. The sealing protrusion and sealing groove design between the sealing disk 504 and the sealing hole 502 ensure that a good sealing effect can be maintained under high water pressure. The component structure is relatively simple, mainly consisting of a baffle 501, a lifting plate 503, a reset spring and other components. It is easy to install and maintain and can be applied to well bodies 1 of different specifications and types. By adjusting parameters such as the length of the guide column 7 and the elastic force of the reset spring, it can adapt to different water level change ranges. While preventing water from flowing back, it also reduces environmental pollution and energy waste caused by water overflow. When the water level drops, the reset spring deforms and pushes the sealing disk 504 down, separating the sealing disk 504 from the sealing hole 502, so that drainage can continue.

[0027] The working principle of the present invention is as follows: When rainwater falls onto the manhole cover body 3, it first enters the well body 1 through the opening of the manhole cover body 3. The separation plate 4 below the manhole cover body 3 and the inclined guide portion 401 on its top play a key role, guiding the rainwater along the guide portion 401 to the center of the separation plate 4 and then into the deeper part of the well body 1 through the guide holes opened in the separation plate 4. During this process, impurities in the rainwater (such as leaves and garbage) are blocked by the separator plate 4 and retained above it, achieving a preliminary filtering effect. The separator plate 4 and its top guide 401 are rationally designed, effectively filtering impurities in the rainwater, reducing the risk of sewer pipe blockage and improving drainage efficiency. The addition of triangular reinforcement ribs 201 significantly enhances the overall stability and load-bearing capacity of the manhole cover, extending its service life. The overall design is rational, and the various components fit tightly together, effectively improving the efficiency of rainwater collection and discharge, and reducing the risk of road waterlogging. When the water level in the manhole rises rapidly during extreme weather such as heavy rain, the powerful impact of the water flow acts on the conical bearing surface at the bottom of the lifting plate 503. The conical design effectively converts the water pressure into an upward thrust. When this thrust exceeds the elastic force of the return spring, the lifting plate 503 begins to slide upward along the guide column 7. As the lifting plate 503 rises, the sealing disc 504 gradually embeds into the sealing protrusion in the sealing hole 502 until it is completely sealed. During this process, the close fit between the sealing groove and the sealing protrusion forms an effective seal, preventing water from continuing to flow upward, thereby preventing water from flowing back into the well. This design does not require manual intervention and can automatically adjust the sealing state according to changes in the water level in the well, effectively preventing water from flowing back. The sealing protrusion and sealing groove design between the sealing disk 504 and the sealing hole 502 ensure that a good sealing effect can be maintained under high water pressure. The component structure is relatively simple, mainly consisting of a baffle 501, a lifting plate 503, a reset spring and other components. It is easy to install and maintain and can be applied to well bodies 1 of different specifications and types. By adjusting parameters such as the length of the guide column 7 and the elastic force of the reset spring, it can adapt to different water level change ranges. While preventing water from flowing back, it also reduces environmental pollution and energy waste caused by water overflow. When the water level drops, the reset spring deforms and pushes the sealing disk 504 down, separating the sealing disk 504 from the sealing hole 502, so that drainage can continue.

[0028] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention; in order to make the public have a thorough understanding of the present invention, specific details are described in detail in the above preferred embodiments of the present invention, and those skilled in the art can fully understand the present invention without the description of these details.

[0029] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A manhole cover with a backflow prevention function, comprising a manhole body (1), characterized in that: A mounting seat (2) is provided on the outside of the well body (1), a well cover body (3) is provided on the top of the well body (1), and a filter assembly is provided inside the well cover body (3); A backflow prevention component (5) is used to prevent water in the well from gushing out, and the backflow prevention component (5) is connected to the well body (1).

2. The manhole cover with anti-backflow function according to claim 1 is characterized in that: A first limiting groove is provided on the top of the well body (1), the interior of the first limiting groove is tightly fitted with the well cover body (3), a triangular reinforcing rib (201) is fixedly connected to the outside of the well body (1), and the bottom of the reinforcing rib (201) is fixedly connected to the top of the mounting seat (2).

3. The manhole cover with anti-backflow function according to claim 1 is characterized in that: The filter assembly comprises a second limiting groove provided in the inner wall of the well body (1), a separation plate (4) is clamped inside the second limiting groove, an inclined flow guide portion (401) is provided on the top of the separation plate (4), and a flow guide hole is provided inside the separation plate (4).

4. The manhole cover with anti-backflow function according to claim 3 is characterized in that: The backflow prevention assembly (5) comprises a baffle (501) fixedly connected to the inner wall of the well body (1), the baffle (501) being located directly below the flow guide portion (401), a sealing hole (502) being provided at the center of the baffle (501), a sealing protrusion being provided on the inner wall of the sealing hole (502), and a deformation cavity being provided inside the sealing protrusion.

5. The manhole cover with anti-backflow function according to claim 4 is characterized in that: A fixed block (6) is fixedly connected to the inner wall of the well body (1); a guide column (7) is fixedly connected between the top of the fixed block (6) and the baffle (501); a lifting plate (503) is slidably connected to the outside of the guide column (7); a return spring is fixedly connected between the top of the lifting plate (503) and the bottom of the baffle (501), and the return spring is sleeved on the outside of the guide column (7).

6. The manhole cover with anti-backflow function according to claim 5, characterized in that: A sealing disc (504) is fixedly connected to the top of the lifting plate (503), and a sealing groove is provided on the outside of the sealing disc (504), and the sealing groove is adapted to the sealing protrusion.

7. The manhole cover with anti-backflow function according to claim 6 is characterized in that: An air cavity is provided inside the lifting plate (503), and a conical force-bearing surface is provided at the bottom of the lifting plate (503).

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