Anti-leakage reinforced concrete inspection well

The internal sealing structure solves the problem of difficult disassembly and assembly of seals for anti-leakage reinforced concrete inspection wells, achieving convenient disassembly and assembly and reducing maintenance costs.

CN224173459UActive Publication Date: 2026-04-28NANCHONG QICAI BUILDING MATERIALS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
NANCHONG QICAI BUILDING MATERIALS CO LTD
Filing Date
2025-05-26
Publication Date
2026-04-28

AI Technical Summary

Technical Problem

When existing leak-proof reinforced concrete inspection wells are connected to drainage pipes, the sealing parts are aged and damaged, requiring removal and replacement, which is difficult, costly, and complicated.

Method used

The system employs an internal sealing structure, comprising a first sealing ring, an outer retaining ring, a drainage pipe body, an inner retaining ring, a hollow ring strip, a second sealing ring, and an outer retaining plate. Through a combination of small and large round insertion holes, an internal sealing connection is achieved between the drainage pipe and the inspection well body.

Benefits of technology

It simplifies the disassembly and assembly process of the seals, reduces the difficulty and cost of maintenance, improves the sealing effect, and reduces the number of times the backfill soil outside the well needs to be removed.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224173459U_ABST
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Abstract

The utility model relates to the technical field of inspection wells, in particular to an anti-leakage reinforced concrete inspection well which comprises an inspection well body, small round insertion holes are formed in the left side face and the right side face of the inspection well body, large round insertion holes are formed in the sides, close to the interior of the inspection well body, of the small round insertion holes in a communicated mode, and outer clamping rings are connected to the inner sides of the small round insertion holes in a clamped mode. According to the anti-leakage reinforced concrete inspection well, through the arrangement of the first sealing ring, the outer clamping ring, the drainage pipeline body, the inner clamping ring, the hollow ring strip, the second sealing ring, the outer clamping disc and the fixing hole, the drainage pipeline body can be conveniently connected into the inspection well body through the anti-leakage reinforced concrete inspection well, and therefore the drainage pipeline body can be conveniently connected into the inspection well body; the inner inserting sealing structure is used for conducting sealing assistance on the drainage pipeline body penetrating through the interiors of the small circular inserting hole and the large circular inserting hole, leakage of the drainage pipeline body is prevented, and due to the use of the inner inserting sealing structure, the overhaul difficulty and the overhaul work cost can be reduced while convenient disassembly and assembly are facilitated.
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Description

Technical Field

[0001] This utility model relates to the field of inspection well technology, specifically to a leak-proof reinforced concrete inspection well. Background Technology

[0002] In drainage work, reinforced concrete inspection wells are vertical shaft structures used in drainage engineering to inspect, clean and maintain underground pipe networks. They provide access for personnel or machinery, facilitate pipe condition inspection, dredging and unblocking, and also enable the connection of different pipes, regulate water flow direction or divert flow. Reinforced concrete inspection wells are usually set at pipe junctions, bends or locations where pipe diameter changes.

[0003] Currently, when connecting drainage pipes to existing anti-seepage reinforced concrete inspection wells, in some cases, the drainage pipes are connected to a sealing flange installed in an opening in the well wall to provide anti-seepage sealing protection for the drainage pipes. However, considering that the sealing connection is installed on the outer wall of the well, if the sealing component ages and is damaged and needs to be removed and replaced, the space constraints will make maintenance difficult. In addition, the backfill soil around the outside of the well needs to be removed before the operation can be carried out, which increases the cost of the entire maintenance work and makes it difficult for operators to quickly complete the disassembly and assembly of the sealing component. Therefore, an anti-seepage reinforced concrete inspection well is proposed to address the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a seepage-proof reinforced concrete inspection well to solve the problem mentioned in the background art that existing seepage-proof reinforced concrete inspection wells are inconvenient to disassemble and replace and are difficult to maintain when connected to drainage pipes.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A leak-proof reinforced concrete inspection well includes an inspection well body. Small round insertion holes are provided on the left and right sides of the inspection well body. A large round insertion hole is connected to the side of the small round insertion hole near the interior of the inspection well body. An outer retaining ring is engaged with the inner side of the small round insertion hole. A first sealing ring is fitted on the outer surface of the outer retaining ring. An inner retaining ring is fixedly connected to the opposite side of the two outer retaining rings and is engaged with the interior of the large round insertion hole. An outer retaining plate is fixedly connected to the outside of the inner retaining ring. A second sealing ring is adhered inside the arc groove on the inner side of the inner retaining ring. A drainage pipe body is inserted into the inner side of the inner retaining ring. A hollow ring strip is attached to the side of the drainage pipe body near the interior of the inspection well body. An arc strip is fitted on the lower outer side of the outer retaining plate.

[0007] Preferably, the top of the inspection well body is integrally cast and formed with a well cylinder, and the bottom of the inspection well body is fixedly connected with a base, the length of which is greater than the length of the inspection well body.

[0008] Preferably, the outer diameter of the small circular insertion hole is smaller than the outer diameter of the large circular insertion hole, and the large circular insertion hole and the inspection well body are integrally cast and formed.

[0009] Preferably, the arc strip is fixedly installed inside the large circular socket, and the inner ring surface of the arc strip and the outer ring surface of the outer chuck are fitted together.

[0010] Preferably, the outer surface of the outer chuck and the inner surface of the large circular insertion hole are fitted together. The outer surface of the outer chuck is provided with fixing holes. A plurality of fixing holes are arranged in a ring array structure along the center point of the outer chuck. The inner ring inlet position of the outer chuck has a bevel structure. The hollow ring bar and the inner chuck are fixedly connected together. The outer diameter of the outer chuck is smaller than the outer diameter of the inner chuck.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] In this invention, the inclusion of a first sealing ring, an outer retaining ring, a drainage pipe body, an inner retaining ring, a hollow ring strip, a second sealing ring, an outer retaining plate, and a fixing hole facilitates the placement of the leak-proof reinforced concrete inspection well into the pre-excavated pit. During the process of connecting the drainage pipe body to the inspection well body, the internal sealing structure, composed of the first sealing ring, outer retaining ring, drainage pipe body, inner retaining ring, hollow ring strip, second sealing ring, outer retaining plate, and fixing hole, provides internal sealing assistance to the drainage pipe body penetrating the small and large round insert holes. This prevents leakage at the connection point between the pipe body and the inspection well body during drainage. Compared to the conventional method of installing sealing components on the outside of the well wall, the internal sealing structure allows operators to easily access and disassemble the inspection well body, reducing maintenance difficulty and costs, minimizing the need to remove backfill soil, and enabling operators to quickly install and remove the seals. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram showing the internal semi-section structure of the small round socket and the large round socket of this utility model;

[0015] Figure 3 This is a schematic diagram of the installation structure of the first sealing ring of this utility model;

[0016] Figure 4 This is a schematic diagram of the hollow ring installation structure of this utility model.

[0017] In the diagram: 1. Inspection well body; 2. Small round insertion hole; 3. First sealing ring; 4. Outer retaining ring; 5. Drainage pipe body; 6. Inner retaining ring; 7. Hollow ring strip; 8. Second sealing ring; 9. Outer retaining plate; 10. Fixing hole; 11. Base; 12. Well shaft; 13. Large round insertion hole; 14. Arc strip. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-4 This utility model provides a technical solution:

[0020] A leak-proof reinforced concrete inspection well includes an inspection well body 1. Small round insertion holes 2 are provided on the left and right sides of the inspection well body 1. A large round insertion hole 13 is connected to the side of the small round insertion hole 2 near the inside of the inspection well body 1. An outer retaining ring 4 is snapped into the inner side of the small round insertion hole 2. A first sealing ring 3 is sleeved on the outer surface of the outer retaining ring 4. An inner retaining ring 6 is fixedly connected to the opposite side of the two outer retaining rings 4 and snapped into the inside of the large round insertion hole 13. An outer retaining plate 9 is fixedly connected to the outside of the inner retaining ring 6. A second sealing ring 8 is adhered inside the arc groove on the inner side of the inner retaining ring 6. A drainage pipe body 5 is inserted into the inner side of the inner retaining ring 6. A hollow ring strip 7 is attached to the side of the drainage pipe body 5 near the inside of the inspection well body 1. An arc strip 14 is sleeved on the lower outer side of the outer retaining plate 9.

[0021] like Figure 1 As shown, the top of the inspection well body 1 is integrally cast and formed with a well cylinder 12, and the bottom of the inspection well body 1 is fixedly connected with a base 11. The length of the base 11 is greater than the length of the inspection well body 1. The well cylinder 12 can be assembled with a well cover and can seal the inlet of the inspection well body 1.

[0022] like Figure 1 and Figure 2 As shown, the outer diameter of the small round socket 2 is smaller than that of the large round socket 13. The large round socket 13 and the inspection well body 1 are integrally cast and formed. The conductive arrangement of the large round socket 13 and the small round socket 2 facilitates the fitting and installation of the internal sealing structure.

[0023] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the arc strip 14 is fixedly installed inside the large circular socket 13. The inner ring surface of the arc strip 14 and the outer ring surface of the outer clasp 9 are fitted together. When the outer clasp 9 is inserted into the large circular socket 13 along with the inner clasp ring 6, the arc strip 14 will support the outer clasp 9, which is conducive to its subsequent convenient installation. The outer surface of the outer clasp 9 is fitted together with the inner surface of the large circular socket 13. The outer surface of the outer clasp 9 is provided with fixing holes 10. Several fixing holes 10 are arranged in a ring array structure along the center point of the outer clasp 9. The inner ring inlet of the outer clasp ring 4 has a beveled structure. The hollow ring strip 7 and the inner clasp ring 6 are fixedly connected together. The outer diameter of the outer clasp ring 4 is smaller than the outer diameter of the inner clasp ring 6. The beveled structure at the inner ring inlet of the outer clasp ring 4 can fit into the small circular socket 2 of the drainage pipe body 5, which plays a guiding and assisting role.

[0024] Workflow: During on-site construction according to the drainage project plan, before using the inspection well, first align the inner retaining ring 6 and outer retaining ring 4 with the large circular insertion hole 13 and small circular insertion hole 2 respectively, and insert them into the corresponding holes. The arc strip 14 provides support from the bottom of the outer retaining plate 9. Then, through multiple bolts passing through the fixing hole 10, the inspection well body 1 and the outer retaining plate 9 are fixedly connected together. This allows the internal sealing structure, composed of the first sealing ring 3, outer retaining ring 4, drainage pipe body 5, inner retaining ring 6, hollow ring strip 7, second sealing ring 8, outer retaining plate 9, and fixing hole 10, to be installed on the inspection well body 1. After pre-assembly, the inspection well can be hoisted into the pre-excavated pit using hoisting equipment. It is then placed flat in the pit, aligned with the inside of the outer retaining ring 4, and with the assistance of the hoisting equipment, the drainage pipe body 5 is pushed into it, allowing it to extend into the inside of the inner retaining ring 6, abutting against the hollow ring 7 and tightly adhering to the second sealing ring 8. During subsequent drainage, the inspection well can be sealed and leak-proof by the internal sealing structure installed at the connection between the drainage pipe body 5 and the inspection well body 1. Compared with the previous external sealing components, the internal sealing structure facilitates convenient removal and replacement later.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A leak-proof reinforced concrete inspection well, comprising an inspection well body (1), characterized in that: Small round insertion holes (2) are provided on the left and right sides of the inspection well body (1). A large round insertion hole (13) is connected to the side of the small round insertion hole (2) near the inside of the inspection well body (1). An outer retaining ring (4) is snapped into the inner side of the small round insertion hole (2). A first sealing ring (3) is sleeved on the outer surface of the outer retaining ring (4). An inner retaining ring (6) is fixedly connected to the opposite side of the two outer retaining rings (4) and snapped into the inside of the large round insertion hole (13). An outer retaining plate (9) is fixedly connected to the outside of the inner retaining ring (6). A second sealing ring (8) is glued inside the arc groove on the inner side of the inner retaining ring (6). A drainage pipe body (5) is inserted into the inner side of the inner retaining ring (6). A hollow ring strip (7) is attached to the side of the drainage pipe body (5) near the inside of the inspection well body (1). An arc strip (14) is sleeved on the lower outer side of the outer retaining plate (9).

2. The anti-leakage reinforced concrete inspection well according to claim 1, characterized in that: The top of the inspection well body (1) is integrally cast and formed with a well cylinder (12), and the bottom of the inspection well body (1) is fixedly connected with a base (11), the length of which is greater than the length of the inspection well body (1).

3. The anti-leakage reinforced concrete inspection well according to claim 1, characterized in that: The outer diameter of the small round insertion hole (2) is smaller than the outer diameter of the large round insertion hole (13), and the large round insertion hole (13) and the inspection well body (1) are integrally cast and formed.

4. A leak-proof reinforced concrete inspection well according to claim 1, characterized in that: The arc strip (14) is fixedly installed inside the large circular socket (13), and the inner ring surface of the arc strip (14) and the outer ring surface of the outer chuck (9) are fitted together.

5. A leak-proof reinforced concrete inspection well according to claim 1, characterized in that: The outer surface of the outer chuck (9) and the inner surface of the large circular insertion hole (13) are fitted together. The outer surface of the outer chuck (9) is provided with fixing holes (10). Several fixing holes (10) are arranged in a ring array structure along the center point of the outer chuck (9). The inner ring inlet of the outer chuck (4) has a beveled structure. The hollow ring (7) and the inner chuck (6) are fixedly connected together. The outer diameter of the outer chuck (4) is smaller than the outer diameter of the inner chuck (6).