Cast-in-situ well chamber pipe orifice pre-buried grouting pipe secondary plugging construction device
By combining a chuck, threaded rod, and extrusion bar, the problem of incomplete sealing in existing devices is solved, achieving efficient sealing of the grouting pipe and improving the stability and durability of the structure.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG YUFANG CONSTR ENG CO LTD
- Filing Date
- 2025-06-25
- Publication Date
- 2026-06-26
AI Technical Summary
The existing secondary sealing construction device for pre-embedded grouting pipes in cast-in-place well chambers has insufficient tightness between the rubber plug and the inner wall of the grouting pipe during sealing, resulting in low sealing tightness.
A secondary sealing construction device for pre-embedded grouting pipes in cast-in-place well chambers was designed. It adopts a combination structure of chuck, threaded rod, sealing plug and extrusion rod. The sealing plug and the inner wall of the grouting pipe are tightly fitted by threaded connection and rotation of extrusion rod.
This improves the sealing tightness of the grouting pipe, prevents debris from entering the grouting pipe, and ensures the stability and durability of the structure.
Smart Images

Figure CN224412553U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of construction device technology, specifically to a construction device for secondary sealing of pre-embedded grouting pipes at the inlet of cast-in-place well chambers. Background Technology
[0002] The main function and purpose of the secondary sealing construction device for the pre-embedded grouting pipe at the well chamber opening is to inject grout material through the grouting pipe to seal the gaps and holes at the well chamber opening, prevent the penetration of moisture, gas or other harmful substances, and ensure the stability and durability of the structure. After the grouting is completed, in order to prevent foreign matter from entering the grouting pipe, the sealing device needs to be used to seal the grouting pipe opening tightly.
[0003] In the use of existing secondary sealing construction devices for pre-embedded grouting pipes in cast-in-place well chambers, rubber plugs are usually inserted into the grouting pipe opening to achieve sealing. However, relying solely on insertion into the grouting pipe opening results in limited tightness between the rubber plug and the inner wall of the grouting pipe, leading to low sealing tightness. Therefore, a new type of secondary sealing construction device for pre-embedded grouting pipes in cast-in-place well chambers is urgently needed to solve these problems. Utility Model Content
[0004] (a) Technical problems to be solved
[0005] The technical problem to be solved by this utility model is to provide a secondary sealing construction device for pre-embedded grouting pipes at the inlet of cast-in-place well chambers, in light of the current state of the technology.
[0006] (II) Technical Solution
[0007] This utility model is achieved through the following technical solution: This utility model proposes a secondary sealing construction device for pre-embedded grouting pipes in cast-in-place well chambers, including a chuck, a threaded hole centrally opened on one side wall of the chuck, a threaded rod connected in the threaded hole, a sealing plug overlapping one side wall of the chuck, a through hole opened on one side wall of the sealing plug at the threaded rod, and a compression rod fixed at one end of the threaded rod.
[0008] Furthermore, a connecting post is fixed to the other end of the threaded rod, and a turntable is provided at the end of the connecting post.
[0009] Furthermore, the threaded hole is formed on one side wall of the chuck, and the chuck has a circular structure.
[0010] Furthermore, both the threaded rod and the turntable are welded to the connecting column, and both the connecting column and the turntable are made of stainless steel.
[0011] Furthermore, the threaded hole is threadedly connected to the threaded rod, and the sealing plug overlaps on one side wall of the chuck.
[0012] Furthermore, the perforation is formed on one side wall of the sealing plug, and the sealing plug is made of rubber.
[0013] Furthermore, the perforation is slidably connected to the threaded rod, and the threaded rod is welded to the extrusion rod.
[0014] Furthermore, the perforation is rotatably connected to the extrusion rod, and the extrusion rod has a conical structure.
[0015] (III) Beneficial Effects
[0016] Compared with the prior art, this utility model has the following advantages:
[0017] This invention involves creating a perforation in the sealing plug. When sealing the grouting pipe, the turntable at the end of the threaded rod passes through the perforation and threaded hole in sequence, allowing the sealing plug and chuck to be fitted onto the threaded rod. Then, the extrusion rod is held and the chuck is rotated on the threaded rod, causing the chuck to be screwed onto the threaded rod through the threaded hole. Subsequently, the turntable is held and the sealing plug is inserted into the grouting pipe opening, making the chuck fit against the wall of the grouting pipe opening. The chuck is then pressed tightly and the turntable is rotated, causing the extrusion rod to rotate and approach the sealing plug. The extrusion rod passes into the perforation, and as the threaded rod moves, the extrusion rod is pressed into the perforation until the turntable can no longer be turned. This forces the sealing plug outwards into the inner wall of the grouting pipe, making the sealing plug fit more tightly against the inner wall of the grouting pipe, thereby improving the tightness of the grouting pipe sealing. Attached Figure Description
[0018] Fig. 1 This is a schematic diagram of the secondary sealing construction device for the pre-embedded grouting pipe at the inlet of the cast-in-place well chamber described in this utility model;
[0019] Fig. 2 This is a split diagram of the secondary sealing construction device for the pre-embedded grouting pipe at the inlet of the cast-in-place well chamber described in this utility model.
[0020] The annotations in the attached figures are explained as follows:
[0021] 1. Chuck; 2. Threaded hole; 3. Threaded rod; 4. Sealing plug; 5. Perforation; 6. Compression rod; 7. Connecting post; 8. Turntable. Detailed Implementation
[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0023] like Figs. 1-2As shown, the secondary sealing construction device for the pre-embedded grouting pipe at the inlet of the cast-in-place well chamber in this embodiment includes a chuck 1. A threaded hole 2 is centrally located on one side wall of the chuck 1. The threaded hole 2 facilitates the screwing of the threaded rod 3 into the chuck 1. The chuck 1 can better resist the grouting pipe wall, preventing the chuck 1 from being inserted into the inner wall of the grouting pipe along with the sealing plug 4. The threaded rod 3 is connected inside the threaded hole 2. The sealing plug 4 overlaps one side wall of the chuck 1. The threaded hole 2 facilitates the movement of the rotating threaded rod 3 on the chuck 1. The sealing plug 4 can better seal the grouting pipe. To prevent debris from entering the grouting pipe, a perforation 5 is provided on one side wall of the sealing plug 4 at the threaded rod 3. The perforation 5 facilitates the sliding of the sealing plug 4 on the threaded rod 3, allowing the sealing plug 4 to fit against one side wall of the chuck 1. The threaded rod 3 can more firmly fix the extrusion rod 6. The extrusion rod 6 is fixed to one end of the threaded rod 3. The extrusion rod 6 can rotate together with the rotation of the threaded rod 3 and move closer to the perforation 5. The extrusion rod 6 can squeeze into the perforation 5 to better squeeze the sealing plug 4 outward, which can improve the tightness of the fit between the sealing plug 4 and the inner wall of the grouting pipe.
[0024] like Figs. 1-2 As shown, in this embodiment, a connecting post 7 is fixed to the other end of the threaded rod 3, and a turntable 8 is provided at the end of the connecting post 7. The threaded rod 3 can more firmly fix the connecting post 7, and the connecting post 7 can more easily fix the turntable 8 to one end of the threaded rod 3. The threaded hole 2 is formed on one side wall of the chuck 1. The chuck 1 has a circular structure. Both the threaded rod 3 and the turntable 8 are welded to the connecting post 7. Both the connecting post 7 and the turntable 8 are made of stainless steel. Twisting the turntable 8 can more easily drive the threaded rod 3 to rotate through the connecting post 7. The turntable 8 is turned by the operator to move the threaded rod 3 on the chuck 1. The threaded hole 2 is threadedly connected to the threaded rod 3. The sealing plug 4 overlaps on one side wall of the chuck 1. The perforation 5 is formed on one side wall of the sealing plug 4. The sealing plug 4 is made of rubber. The perforation 5 can better pass the sealing plug 4 onto the threaded rod 3, making it easier to splice the sealing plug 4 and the chuck 1 together. The perforation 5 is slidably connected to the threaded rod 3. The threaded rod 3 is welded to the extrusion rod 6. The perforation 5 is rotatably connected to the extrusion rod 6. The extrusion rod 6 has a conical structure.
[0025] The specific implementation process of this embodiment is as follows: In use, first, remove the sealing construction device and clean the grouting pipe opening. A perforation 5 is made in the sealing plug 4. When sealing the grouting pipe is required, the turntable 8 at the end of the threaded rod 3 is passed through the perforation 5 and the threaded hole 2 in sequence, so that the sealing plug 4 and the chuck 1 are fitted onto the threaded rod. Then, the squeezing rod 6 is held and the chuck 1 is rotated on the threaded rod 3, allowing the chuck 1 to be screwed onto the threaded rod 3 through the threaded hole 2. Then, the turntable 8 is held... The chuck 1 is inserted into the grouting pipe opening by inserting the sealing plug 4 into the grouting pipe opening. The chuck 1 is then pressed tightly and the chuck 1 is turned. This causes the extrusion rod 6 to rotate and move closer to the sealing plug 4. The extrusion rod 6 is inserted into the perforation 5. As the threaded rod 3 moves, the extrusion rod 6 is pressed into the perforation 5 until the chuck can no longer be turned. This forces the sealing plug 4 outward from the inner wall of the grouting pipe, making the sealing plug 4 fit more tightly against the inner wall of the grouting pipe, thereby improving the tightness of the grouting pipe sealing.
[0026] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A secondary sealing construction device for pre-embedded grouting pipes at the inlet of cast-in-place well chambers, characterized in that: Includes a chuck (1), a threaded hole (2) is provided in the center of one side wall of the chuck (1), a threaded rod (3) is connected in the threaded hole (2), a sealing plug (4) is attached to one side wall of the chuck (1), a through hole (5) is provided on one side wall of the sealing plug (4) at the threaded rod (3), and a compression rod (6) is fixed at one end of the threaded rod (3).
2. The secondary sealing construction device for pre-embedded grouting pipes at the inlet of cast-in-place well chambers according to claim 1, characterized in that: The other end of the threaded rod (3) is fixed with a connecting post (7), and a turntable (8) is provided at the end of the connecting post (7).
3. The secondary sealing construction device for pre-embedded grouting pipes at the inlet of cast-in-place well chambers according to claim 1, characterized in that: The threaded hole (2) is formed on one side wall of the chuck (1), and the chuck (1) has a circular structure.
4. The secondary sealing construction device for pre-embedded grouting pipes at the inlet of cast-in-place well chambers according to claim 2, characterized in that: The threaded rod (3) and the turntable (8) are both welded to the connecting column (7), and the connecting column (7) and the turntable (8) are both made of stainless steel.
5. The secondary sealing construction device for pre-embedded grouting pipes at the inlet of cast-in-place well chambers according to claim 1, characterized in that: The threaded hole (2) is threadedly connected to the threaded rod (3), and the sealing plug (4) overlaps on one side wall of the chuck (1).
6. The secondary sealing construction device for pre-embedded grouting pipes in cast-in-place well chambers according to claim 1, characterized in that: The perforation (5) is formed on one side wall of the sealing plug (4), which is made of rubber.
7. The secondary sealing construction device for pre-embedded grouting pipes in cast-in-place well chambers according to claim 1, characterized in that: The perforation (5) is slidably connected to the threaded rod (3), and the threaded rod (3) is welded to the extrusion rod (6).
8. The secondary sealing construction device for pre-embedded grouting pipes in cast-in-place well chambers according to claim 1, characterized in that: The perforation (5) is rotatably connected to the extrusion rod (6), which has a cone-shaped structure.