Anti-overflow device suitable for inspection well

Abstract

The utility model discloses an anti-overflow device suitable for an inspection well, which belongs to the technical field of inspection wells and comprises a frame, the frame is connected with a manhole, an end cover is hinged to the frame and provided with a first position and a second position, the end cover is separated from the frame when the end cover is located at the first position, and the end cover is separated from the frame when the end cover is located at the second position. The end cover is connected with the frame in an attached mode, a floating plate is detachably connected to the end cover, the top face of the floating plate makes contact with the bottom face of the end cover, and when the water surface of the well chamber body rises, the floating plate drives the end cover to be switched from the first position to the second position. Due to the fact that the top face of the floating plate makes contact with the bottom face of the end cover, no gap exists between the floating plate and the end cover, garbage cannot be clamped between the floating plate and the end cover, the garbage cannot be gradually increased to block the well chamber body, and when the water surface of the well chamber body rises, the garbage cannot be clamped between the floating plate and the end cover. Therefore, the end cover can quickly move to the second position to be connected with the frame.

Description

Technical Field

[0001] This utility model belongs to the field of inspection well technology, and in particular relates to an anti-overflow device suitable for inspection wells. Background Technology

[0002] Overflowing and backing-up phenomena in drainage pipes occur during summer rainstorms. These phenomena are influenced by various factors, including the location and orientation of the drainage pipes, the treatment capacity of sewage treatment plants, the discharge capacity of sewage treatment plants across rivers, and river water levels. These factors can cause the drainage pipes to operate beyond their capacity for short periods, leading to stagnant water rising continuously within the manholes and causing the manhole covers to back up or overflow. Overflowing pipelines are mostly trunk lines or major watershed pipelines. If the problem of manhole covers backing up or overflowing is not addressed promptly, it can lead to large-scale flooding outside rainwater wells and sewage overflowing from sewage wells, polluting the surrounding environment. Therefore, it is necessary to promptly install overflow prevention devices on manholes at backing-up or overflowing points to prevent manhole covers from backing up or overflowing.

[0003] Currently, the common methods for dealing with overflowing and backing issues in drainage pipes include excavating and dredging downstream, and modifying or replacing pipelines. These methods have a significant impact on the environment and road traffic, and are also time-consuming and costly.

[0004] Inverted manhole cover installation is a simple, convenient, and easy-to-install overflow prevention device. Its main working principle is to use the one-way opening feature of the manhole cover to install it upside down, so that rainwater or sewage cannot overflow.

[0005] The applicant disclosed an overflow prevention device for inspection wells in Chinese Patent Publication No. CN 118756753 A. This device uses an inverted well cover for overflow prevention. Under the buoyancy of a float connected to the bottom of the well cover, the well cover and frame fit more tightly, resulting in better sealing. The well cover is made entirely of ZL104 aluminum alloy, ensuring a lightweight yet high pressure-bearing capacity. It is installed at the bottom of the manhole of the inspection well to achieve the overflow prevention effect.

[0006] However, the aforementioned patent uses a buoyancy ball to provide buoyancy for the manhole cover. Since there is a gap between the buoyancy ball and the manhole cover, garbage in the water may get stuck in the area between the buoyancy ball and the manhole cover. Or, as the garbage gradually increases at the connection between the two, it may block the main body of the manhole chamber, affecting drainage efficiency. Moreover, garbage stuck near the buoyancy ball increases the weight of the manhole cover, which will affect the floating of the manhole cover when the water level rises.

[0007] Therefore, there is an urgent need to design an anti-overflow device suitable for inspection wells to solve the problems mentioned above. Utility Model Content

[0008] The purpose of this utility model is to provide an anti-overflow device suitable for inspection wells, which has the advantage that garbage in the water will not get stuck near the well cover and block the main body of the well chamber, thus solving the problems mentioned in the background art.

[0009] To achieve the above objectives, the specific technical solution of this utility model for an anti-overflow device suitable for inspection wells is as follows:

[0010] An overflow prevention device for inspection wells is disclosed. The inspection well includes a hollow well chamber body and a hollow manhole. The well chamber body is connected to the manhole. The overflow prevention device is located at the connection between the well chamber body and the manhole. The overflow prevention device includes a frame connected to the manhole. An end cap is hinged to the frame. The end cap has a first position and a second position. When the end cap is in the first position, it is separated from the frame. When the end cap is in the second position, it is fitted and connected to the frame. A float plate is detachably connected to the end cap. The top surface of the float plate contacts the bottom surface of the end cap. When the water level in the well chamber body rises, the float plate drives the end cap to switch from the first position to the second position, so that the end cap can block the well chamber body.

[0011] Furthermore, a first through hole is provided on the float plate, and a screw hole is provided on the bottom surface of the end cap. After the first through hole and the screw hole coincide, the bolt passes through the first through hole and screws into the screw hole until the top surface of the float plate contacts the bottom surface of the end cap.

[0012] Furthermore, the shape of the float plate is the same as that of the end cap, and the size of the float plate is the same as that of the end cap.

[0013] Furthermore, a rubber pad is fixedly connected to the frame, and when the end cap is in the second position, the end cap is in close contact with the rubber pad on the frame.

[0014] Furthermore, pin holes are provided on both the frame and the end cap. After the pin holes on the frame and the end cap coincide, the cotter pin is inserted into the coincident pin hole. When the end cap switches between the first position and the second position, the end cap rotates around the cotter pin as the axis.

[0015] Furthermore, a connecting component is connected to the end cap. The end of the connecting component away from the end cap is connected to the manhole. When the water level in the main body of the well chamber drops, the end cap rotates from the second position to the first position under its own gravity. The connecting component then resets the end cap to the first position.

[0016] Furthermore, the connecting assembly includes a connecting rope, one end of which is connected to the end cap, and a pulley is connected to the manhole, with the pulley connected to the end of the connecting rope away from the end cap.

[0017] Furthermore, the frame includes a first frame and a second frame, which can be assembled into a frame. Both the first frame and the second frame are fixedly connected with mounting holes. After the first frame and the second frame are assembled into a frame, the mounting holes on the first frame and the second frame coincide, and the first frame and the second frame are fixed by bolts passing through the mounting holes.

[0018] Furthermore, the frame includes a first connecting part and a second connecting part, which are fixedly connected. The first connecting part has a second through hole. After the first frame and the second frame are assembled into a frame, and the first connecting part is fitted with the inner wall of the manhole and the second connecting part is fitted with the top surface of the main body of the well chamber, the frame is connected and fixed to the manhole by steel bars passing through the second through hole.

[0019] Furthermore, a lifting lug is fixedly connected to the end of the first connecting part away from the second connecting part, and the lifting lug is connected to the crane to move the frame.

[0020] Compared with the prior art, the anti-overflow device for inspection wells provided in this application, using the above technical solution, has the following advantages:

[0021] Because the top surface of the float plate contacts the bottom surface of the end cap, there is no gap between the float plate and the end cap, so garbage will not get stuck between the float plate and the end cap. This prevents the garbage from gradually increasing and blocking the main body of the well chamber. Furthermore, when the water level in the main body of the well chamber rises, since the garbage will not get stuck between the float plate and the end cap, the end cap can quickly move to the second position and connect with the frame, sealing the connection between the manhole and the main body of the well chamber and preventing water from overflowing from the manhole. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the anti-overflow device of this utility model installed in the inspection well;

[0023] Figure 2 This is a schematic diagram of the explosive floating plate structure of the frame of this utility model;

[0024] Figure 3 This is a schematic diagram of the combined structure of the frame of this utility model.

[0025] The markings in the diagram are as follows: 1. Inspection well; 11. Main chamber of the well; 12. Manhole; 2. End cap; 21. Float; 22. Bolt; 23. Cotter pin; 3. Frame; 31. First frame; 32. Second frame; 33. Mounting hole; 34. Pin hole; 35. First connection part; 36. Second connection part; 4. Rubber pad; 5. Reinforcing bar; 6. Connecting assembly; 61. Connecting rope; 62. Pulley. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] Those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of this invention and form different embodiments. For example, in the claims, any of the claimed embodiments can be used in any combination.

[0028] The following is a reference to the appendix. Figure 1 To be continued Figure 3 This invention describes an anti-overflow device suitable for inspection wells.

[0029] The inspection well 1 includes a hollow well chamber body 11 and a hollow manhole 12. The well chamber body 11 is connected to the manhole 12, and an overflow prevention device is installed at the connection between the well chamber body 11 and the manhole 12.

[0030] The existing overflow prevention device uses a buoyancy ball to provide buoyancy. However, due to the height gap between the buoyancy ball and the manhole cover, the applicant found during actual installation and application that some lightweight garbage accumulates at the bottom of the manhole chamber over a long period of time. When the water level rises, the garbage in the water floats up and accumulates between the buoyancy ball and the manhole cover. This causes some garbage to get stuck at the connection between the buoyancy ball and the manhole cover or in the area between the two, resulting in a gradual increase in garbage that blocks the main body of the manhole chamber 11, affecting drainage efficiency. Furthermore, the garbage stuck near the buoyancy ball increases the weight of the manhole cover, affecting its floating when the water level rises, leading to the failure of the overflow prevention function.

[0031] Therefore, the applicant has fully considered the actual situation inside the well chamber and the structural characteristics of the existing overflow prevention device, and has made further improvements to the structure of the overflow prevention device so that it is not affected by garbage and debris and can fully perform its overflow prevention function.

[0032] The overflow prevention device in this embodiment includes a frame 3, which is connected to a manhole 12. The frame 3 is hinged to an end cap 2, which has a first position and a second position. When the end cap 2 is in the first position, the end cap 2 is separated from the frame 3, and the well chamber body 11 is connected to the manhole 12. When the end cap 2 is in the second position, the end cap 2 is fitted and connected to the frame 3, and the well chamber body 11 and the manhole 12 are blocked by the end cap 2 and disconnected. A float plate 21 is detachably connected to the end cap 2, and the top surface of the float plate 21 contacts the bottom surface of the end cap 2. By setting the float plate 21, the area of ​​the float plate 21 is larger than that of the float ball, so that the buoyancy provided to the end cap 2 is greater. When the water level in the well chamber body 11 rises, the float plate 21 can drive the end cap 2 to respond quickly, connect the end cap 2 to the frame 3, and increase the buoyancy to make the end cap 2 and the frame 3 fit more tightly, thus enhancing the airtightness.

[0033] At the same time, the top surface of the float plate 21 contacts the bottom surface of the end cover 2, and there is no gap between the float plate 21 and the end cover 2. The garbage will not get stuck between the float plate 21 and the end cover 2, so that the garbage will not gradually increase and block the main body of the well chamber 11. When the water level of the main body of the well chamber 11 rises, since the garbage will not get stuck between the float plate 21 and the end cover 2, the end cover 2 can quickly move to the second position and connect with the frame 3, blocking the connection between the manhole 12 and the main body of the well chamber 11, and preventing water from overflowing from the manhole 12.

[0034] At the start of the flood season, when the water level rises in the main body 11 of the well chamber, the end cover 2 is switched from the first position to the second position via the float 21.

[0035] When the flood season ends and the water level in the main body 11 of the well chamber drops, the end cover 2 is switched from the second position to the first position by the float 21.

[0036] Regarding the detachable connection method between the end cap 2 and the float plate 21, preferably, the float plate 21 has a first through hole and the bottom surface of the end cap 2 has a screw hole. After the first through hole and the screw hole coincide, the bolt 22 passes through the first through hole and screws into the screw hole until the top surface of the float plate 21 contacts the bottom surface of the end cap 2. The float plate 21 can be removed from the end cap 2 by tightening or loosening the bolt 22, which facilitates the replacement of the float plate 21 and the maintenance of the float plate 21 after the flood season. In other embodiments of this application, the float plate 21 and the end cap 2 can also be detachably connected by plugging or snapping, as long as the detachability of the float plate 21 and the end cap 2 can be guaranteed.

[0037] Preferably, the shape of the float plate 21 is the same as the shape of the end cap 2, and the size of the float plate 21 is the same as the size of the end cap 2. By making the shape of the float plate 21 the same as the shape of the end cap 2, and the size of the float plate 21 the same as the size of the end cap 2, the float plate 21 and the end cap 2 are completely overlapped, which further prevents garbage from getting stuck between the float plate 21 and the end cap 2.

[0038] Specifically, a rubber pad 4 is fixedly connected to the frame 3. When the end cap 2 is in the second position, the end cap 2 and the rubber pad 4 on the frame 3 are in close contact. By setting the rubber pad 4, when the end cap 2 is in the second position, the end cap 2 and the frame 3 are tightly in contact through the rubber pad 4, ensuring the sealing effect at the connection.

[0039] Preferably, in practical applications, the floating plate 21 in this embodiment can be made of EVA material, which is pressure-resistant, corrosion-resistant, can be exposed to sunlight, and is not prone to aging. It also has good water resistance and corrosion resistance. During processing, it is formed as a whole piece and is easy to perform hot pressing, cutting, bonding and other processing.

[0040] Regarding the hinge method of the frame 3 and the end cap 2, preferably, both the frame 3 and the end cap 2 are provided with pin holes 34. After the pin holes 34 of the frame 3 and the pin holes 34 of the end cap 2 coincide, the cotter pin 23 is inserted into the coincident pin holes 34. When the end cap 2 switches between the first position and the second position, the end cap 2 rotates around the cotter pin 23 as the axis. Through this hinge method, the frame 3 and the end cap 2 are easy to assemble and disassemble.

[0041] A connecting component 6 is connected to the end cap 2. The end of the connecting component 6 away from the end cap 2 is connected to the manhole 12. When the water level in the main body of the well chamber 11 drops, the end cap 2 rotates from the second position to the first position under its own weight. The connecting component 6 then resets the end cap 2 to the first position. Specifically, the connecting component 6 includes a connecting rope 61, one end of which is connected to the end cap 2. A pulley 62 is connected to the manhole 12, and the pulley 62 is connected to the end of the connecting rope 61 away from the end cap 2. The connecting component 6 controls the end cap 2 to remain in the first position. Thus, when the water level in the main body of the well chamber 11 rises at the beginning of the flood season, the end cap 2 can float up due to the buoyancy of the float plate 21, preventing the end cap 2 from rotating to be perpendicular to the water flow direction of the main body of the well chamber 11 under its own weight. Therefore, the end cap 2 cannot float up at the beginning of the flood season.

[0042] The frame 3 includes a first frame 31 and a second frame 32. The first frame 31 and the second frame 32 can be assembled into the frame 3. The first frame 31 and the second frame 32 are both fixedly connected with mounting holes 33. After the first frame 31 and the second frame 32 are assembled into the frame 3, the mounting holes 33 on the first frame 31 and the second frame 32 coincide. The first frame 31 and the second frame 32 are fixed by bolts 22 passing through the mounting holes 33.

[0043] The frame 3 includes a first connecting part 35 and a second connecting part 36, which are fixedly connected. The first connecting part 35 has a second through hole. The frame 3 is assembled from the first frame 31 and the second frame 32. After the first connecting part 35 is attached to the inner wall of the manhole 12 and the second connecting part 36 is attached to the top surface of the well chamber body 11, the frame 3 is connected and fixed to the manhole 12 by passing through the second through hole with a steel bar 5.

[0044] A lifting lug is fixedly connected to the end of the first connecting part 35 away from the second connecting part 36. The lifting lug is connected to the crane to move the frame 3.

[0045] The end cap 2, the first frame 31, the second frame 32, and the float 21 are hoisted to the main body 11 of the well chamber. The first frame 31 and the second frame 32 are assembled into a frame 3 through the mounting holes 33. Then, rubber pads 4 are pasted on the frame 3. The assembled frame 3 is lifted by the lifting lugs so that the first connecting part 35 is in contact with the inner wall of the manhole 12 and the second connecting part 36 is in contact with the top surface of the main body 11 of the well chamber. Then, the steel bar 5 is passed through the second through hole and connected and fixed to the manhole 12. The float 21 is connected to the end cap 2 by bolts 22. The end cap 2 is connected to the frame 3 by cotter pins 23. Then, the end cap 2 is connected to the pulley 62 on the manhole 12 by the connecting assembly 6.

[0046] This overflow prevention device does not require excavation of a well chamber, and the installation requires minimal manpower and resources. Relying on the water pressure inside the well chamber, and with a float plate 21 connected below the end cover 2, the end cover 2 and the frame 3 can fit tightly together under the buoyancy, thereby ensuring a tight seal between the end cover 2 and the frame 3 and the top wall of the well chamber body 11. After the flood season, the device can be disassembled and maintained, allowing it to be used multiple times and in multiple locations.

[0047] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An overflow prevention device for a manhole, the manhole (1) comprising a hollow manhole body (11) and a hollow manhole (12), the manhole body (11) communicating with the manhole (12), the overflow prevention device being disposed at the communication point between the manhole body (11) and the manhole (12), characterized in that, The overflow prevention device includes a frame (3) connected to a manhole (12). The frame (3) is hinged to an end cap (2). The end cap (2) has a first position and a second position. When the end cap (2) is in the first position, the end cap (2) is separated from the frame (3). When the end cap (2) is in the second position, the end cap (2) is fitted and connected to the frame (3). A float plate (21) is detachably connected to the end cap (2). The top surface of the float plate (21) is in contact with the bottom surface of the end cap (2). When the water level in the main body (11) of the well chamber rises, the float plate (21) causes the end cap (2) to switch from the first position to the second position under the action of buoyancy.

2. The spill resistant device suitable for use in a manhole according to claim 1, wherein, The float (21) has a first through hole, and the bottom surface of the end cap (2) has a screw hole. After the first through hole and the screw hole coincide, a bolt (22) is threaded through the first through hole and the screw hole until the top surface of the float (21) contacts the bottom surface of the end cap (2).

3. Anti-overflow device suitable for inspection wells according to claim 1 or 2, characterized in that, The shape of the float (21) is the same as that of the end cap (2), and the size of the float (21) is the same as that of the end cap (2).

4. The spill resistant device suitable for use in a manhole according to claim 1, wherein, A rubber pad (4) is fixedly connected to the frame (3). When the end cap (2) is in the second position, the end cap (2) is in close contact with the rubber pad (4) on the frame (3).

5. The spill resistant device suitable for use in a manhole according to claim 1, wherein, Both the frame (3) and the end cap (2) are provided with pin holes (34). After the pin holes (34) of the frame (3) and the pin holes (34) of the end cap (2) coincide, the cotter pin (23) is inserted into the coincident pin hole (34). When the end cap (2) switches between the first position and the second position, the end cap (2) rotates around the cotter pin (23) as the axis.

6. The spill resistant device suitable for use in a manhole according to claim 1, wherein, The end cap (2) is connected to a connecting component (6). The end of the connecting component (6) away from the end cap (2) is connected to the manhole (12). When the water level in the main body (11) of the well chamber drops, the end cap (2) rotates from the second position to the first position under its own gravity. The end cap (2) is reset to the first position through the connecting component (6).

7. The spill resistant device suitable for use in a manhole according to claim 6, wherein, The connecting assembly (6) includes a connecting rope (61), one end of which is connected to the end cap (2), and a pulley (62) is connected to the manhole (12), the pulley (62) being connected to the end of the connecting rope (61) away from the end cap (2).

8. The anti-overflow device for inspection wells according to claim 1, characterized in that, The frame (3) includes a first frame (31) and a second frame (32). The first frame (31) and the second frame (32) can be assembled into a frame (3). The first frame (31) and the second frame (32) are fixedly connected with mounting holes (33). After the first frame (31) and the second frame (32) are assembled into a frame (3), the mounting holes (33) on the first frame (31) and the second frame (32) overlap. The first frame (31) and the second frame (32) are fixed by bolts (22) passing through the mounting holes (33).

9. The spill resistant device suitable for use in a manhole according to claim 8, wherein, The frame (3) includes a first connecting part (35) and a second connecting part (36). The first connecting part (35) and the second connecting part (36) are fixedly connected. The first connecting part (35) has a second through hole. The first frame (31) and the second frame (32) are assembled into a frame (3). After the first connecting part (35) is attached to the inner wall of the manhole (12) and the second connecting part (36) is attached to the top surface of the well chamber body (11), the steel bar (5) passes through the second through hole and is connected and fixed to the manhole (12).

10. The spill resistant device suitable for use in a manhole according to claim 9, wherein, The first connecting part (35) is fixedly connected to a lifting lug at the end away from the second connecting part (36), and is connected to the crane through the lifting lug to move the frame (3).

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