A sealed conduit for concrete pouring
By introducing sealing and docking components into the concrete pouring conduit, the problem of poor conduit sealing was solved, ensuring stable concrete pouring under high pressure and guaranteeing construction progress.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CCCC SECOND HARBOR ENGINEERING CO LTD
- Filing Date
- 2025-08-12
- Publication Date
- 2026-07-07
AI Technical Summary
The existing concrete pouring conduit has poor sealing performance, which makes it easy for concrete to leak during the pouring process, affecting the pouring quality and construction progress.
A sealing conduit for concrete pouring, comprising a sealing assembly and a docking assembly, was designed. The sealing assembly consists of a pre-tightening spring, a main sealing ring, a secondary sealing ring, and a sealing ring, with the sealing effect enhanced by the action of multiple sets of pre-tightening springs. The docking assembly achieves a stable connection through the cooperation of a docking sleeve, a positioning frame, a roller, and a sleeve, and, combined with a wear-resistant nitrile rubber sealing ring, improves the sealing performance of the conduit.
It effectively prevents concrete leakage under high-pressure grouting, improves the sealing performance and stability of the conduit, extends its service life, and ensures grouting quality and construction efficiency.
Smart Images

Figure CN224468795U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of concrete pouring technology, specifically a sealed conduit for concrete pouring. Background Technology
[0002] In construction engineering, concrete pouring is a crucial step that directly affects the stability and durability of a building. During the pouring process, strict control must be exercised over every stage, including concrete mix design, mixing, transportation, and pouring, to ensure that the concrete's quality and performance meet design requirements. Simultaneously, attention must be paid to concrete curing and temperature control to prevent cracking and premature damage. Through precise construction management and technical measures, the quality of concrete pouring can be guaranteed, thus providing a solid foundation for the long-term safety and use of the building.
[0003] In traditional concrete pouring processes, the use of guide pipes is crucial, as it directly affects the uniformity and density of the concrete. However, existing concrete pouring guide pipes often suffer from poor sealing, which can easily lead to leakage during the pouring process, thereby affecting the pouring quality and construction progress.
[0004] Therefore, this utility model provides a sealed conduit for concrete pouring to solve the above problems. Utility Model Content
[0005] (a) Technical problems to be solved
[0006] This utility model provides a sealed conduit for concrete pouring, which aims to solve the problems mentioned in the background art.
[0007] (II) Technical Solution
[0008] To achieve the above objectives, this utility model provides the following technical solution: It includes a conduit housing, with multiple sets of fixing bolts fixedly installed at the upper end of the conduit housing. A lower sealing seat is fixedly installed inside the conduit housing. An upper sealing cover is fixedly installed at the upper end of the multiple sets of fixing bolts via nuts. The upper sealing cover fits against the upper side of the lower sealing seat. A bottom limiting ring is fixedly installed inside the conduit housing. A positioning seat is provided inside the lower sealing seat. The upper side of the bottom limiting ring fits against the positioning seat. A delivery pipe is provided inside the lower sealing seat and the upper sealing cover. A lower conduit is provided inside the conduit housing. A sealing assembly is provided on the positioning seat. A docking assembly is provided inside the upper sealing cover.
[0009] As a preferred technical solution of this application, the sealing assembly includes multiple sets of pre-tightening springs, which are disposed on the upper side of the positioning seat. A main sealing ring is sleeved inside the lower sealing seat, and a secondary sealing ring is movably sleeved inside the lower sealing seat. The lower end of the main sealing ring is in contact with the secondary sealing ring. A sealing ring is disposed on one side of the contact area between the main sealing ring and the secondary sealing ring. The connection between the secondary sealing ring and the secondary sealing ring is in contact with the connection area between the conveying pipe and the lower conduit. A sealing gland is movably installed inside the lower sealing seat. The main sealing ring, the secondary sealing ring, and the sealing ring are located inside the sealing gland. A positioning ring is disposed on the upper side of the main sealing ring. The positioning ring is in contact with the lower outer wall of the conveying pipe, and the upper side of the positioning ring is in contact with the upper sealing cover.
[0010] As a preferred technical solution of this application, the docking assembly includes a docking sleeve, which is fitted onto the conveying pipe. A positioning frame is fitted onto the outer wall of the docking sleeve. Multiple sets of rollers are circumferentially mounted on the positioning frame. A sleeve is fitted onto the outer wall of the positioning frame and the multiple sets of rollers. A pipe end flange is fixedly installed at the upper end of the conveying pipe. A docking flange is provided on the outer wall of the conveying pipe and the sleeve. The docking flange is fixedly connected to the upper sealing cover.
[0011] As a preferred technical solution of this application, an end face sealing gasket is provided on the upper side of the docking sleeve, and the end face sealing gasket is respectively attached to the outer wall of the conveying pipe and the upper inner wall of the docking flange.
[0012] As a preferred technical solution of this application, the lower end inner wall of the bottom limiting ring is flared, and the inner wall diameter of the bottom limiting ring is the same as the outer wall diameter of the lower conduit.
[0013] As a preferred technical solution of this application, the sealing ring is a hollow elastic sealing body, and the sealing ring is made of wear-resistant nitrile rubber.
[0014] (III) Beneficial Effects
[0015] First, the sealing components significantly enhance the sealing effect after the connection between the delivery pipe and the lower conduit, ensuring the stability of the concrete under high-pressure grouting. Second, the design of the docking components makes the connection of the conduits more secure, reducing the risk of leakage due to loose connections. This sealed conduit for concrete grouting effectively improves the sealing performance of the conduit through the reasonable design of the sealing and docking components, thereby avoiding leakage problems during the concrete grouting process. This sealed conduit for concrete grouting has advantages such as superior sealing performance, stable structure, and long service life, providing strong technical support for concrete grouting projects. Attached Figure Description
[0016] Figure 1 This is a front view schematic diagram of a sealed conduit for concrete pouring;
[0017] Figure 2 This is a frontal structural dissection diagram of a sealed conduit for concrete pouring;
[0018] Figure 3 This is a front view of a sealed conduit for concrete pouring.
[0019] Figure 4 for Figure 3 A magnified structural diagram at point A;
[0020] Figure 5 for Figure 3 A magnified structural diagram at point B.
[0021] In the picture:
[0022] 1. Conduit housing; 2. Fixing bolt; 3. Lower sealing seat; 4. Upper sealing cover; 5. Bottom limiting ring; 6. Positioning seat; 7. Preload spring; 8. Main sealing ring; 9. Secondary sealing ring; 10. Sealing ring; 11. Sealing gland; 12. Positioning ring; 13. Butt sleeve; 14. Positioning frame; 15. Roller; 16. Sleeve; 17. Delivery pipe; 18. End face sealing gasket; 19. Pipe end flange; 20. Butt flange; 21. Lower conduit. Detailed Implementation
[0023] 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.
[0024] This utility model provides a sealed conduit for concrete pouring, such as... Figure 1-5 As shown, the sealed conduit for concrete pouring includes a conduit shell 1. Multiple sets of fixing bolts 2 are fixedly installed at the upper end of the conduit shell 1. A lower sealing seat 3 is fixedly installed inside the conduit shell 1. An upper sealing cover 4 is fixedly installed at the upper end of the multiple sets of fixing bolts 2 by nuts. The upper sealing cover 4 fits against the upper side of the lower sealing seat 3. A bottom limiting ring 5 is fixedly installed inside the conduit shell 1. A positioning seat 6 is provided inside the lower sealing seat 3. The upper side of the bottom limiting ring 5 fits against the positioning seat 6. A delivery pipe 17 is provided inside the lower sealing seat 3 and the upper sealing cover 4. A lower conduit 21 is provided inside the conduit shell 1. A sealing component is provided on the positioning seat 6. A docking component is provided inside the upper sealing cover 4.
[0025] During use, multiple sets of fixing bolts 2 securely install the upper sealing cover 4 on the upper side of the lower sealing seat 3 using nuts, ensuring a tight fit between the upper sealing cover 4 and the lower sealing seat 3, thereby enhancing overall stability. Simultaneously, the bottom limiting ring 5 limits the positioning seat 6, preventing it from shifting during use and further improving the sealing effect. When concrete is poured through this sealed conduit, the sealing assembly effectively prevents concrete leakage, further enhancing sealing performance and ensuring the concrete remains stable under high-pressure pouring. The connecting assembly makes the connection between the delivery pipe 17 and the lower conduit 21 more secure, reducing the risk of leakage due to loose connections.
[0026] The sealing assembly includes multiple sets of pre-tightening springs 7, which are located on the upper side of the positioning seat 6. A main sealing ring 8 is sleeved inside the lower sealing seat 3, and a secondary sealing ring 9 is movably sleeved inside the lower sealing seat 3. The lower end of the main sealing ring 8 is in contact with the secondary sealing ring 9. A sealing ring 10 is provided on one side of the contact area between the main sealing ring 8 and the secondary sealing ring 9. The connection between the secondary sealing ring 9 and the connection area between the conveying pipe 17 and the lower conduit 21 is in contact. A sealing cover 11 is movably installed inside the lower sealing seat 3. The main sealing ring 8, the secondary sealing ring 9, and the sealing ring 10 are located inside the sealing cover 11. A positioning ring 12 is provided on the upper side of the main sealing ring 8. The positioning ring 12 is in contact with the lower outer wall of the conveying pipe 17, and the upper side of the positioning ring 12 is in contact with the upper sealing cover 4.
[0027] During use, the main sealing ring 8 and the secondary sealing ring 9 are tightly fitted together through the sealing ring 10, thereby enhancing the sealing performance. The sealing ring 10 can fit tightly under pressure to prevent leakage. At the same time, its wear-resistant properties also ensure its long-term stability. Furthermore, the movement stability between the main sealing ring 8, the secondary sealing ring 9, and the sealing ring 10 is further enhanced by the action of multiple sets of pre-tightening springs 7, making the entire sealing assembly more reliable during use.
[0028] The docking assembly includes a docking sleeve 13, which is fitted onto the conveying pipe 17. A positioning frame 14 is fitted onto the outer wall of the docking sleeve 13. Multiple sets of rollers 15 are installed in a ring on the positioning frame 14. A sleeve 16 is fitted onto the outer wall of the positioning frame 14 and the multiple sets of rollers 15. A pipe end flange 19 is fixedly installed at the upper end of the conveying pipe 17. A docking flange 20 is provided on the outer wall of the conveying pipe 17 and the sleeve 16. The docking flange 20 is fixedly connected to the upper sealing cover 4.
[0029] During use, the delivery pipe 17 can be rotated and adjusted when inserted into the lower sealing seat 3 through the cooperation of the docking sleeve 13, positioning frame 14, multiple sets of rollers 15 and sleeve 16. In addition, the setting of pipe end flange 19 also facilitates the fixing and installation of delivery pipe 17, and the pipe end flange 19 is rotatably connected to docking flange 20, which improves the installation efficiency of the entire sealing conduit.
[0030] An end face sealing gasket 18 is provided on the upper side of the docking sleeve 13. The end face sealing gasket 18 is respectively attached to the outer wall of the conveying pipe 17 and the upper inner wall of the docking flange 20.
[0031] The use of end face sealing gasket 18 further enhances the fit between delivery pipe 17 and docking flange 20, preventing leakage risks caused by loose connections.
[0032] The lower end of the bottom limiting ring 5 has an flared inner wall, and the inner diameter of the bottom limiting ring 5 is the same as the outer diameter of the lower conduit 21.
[0033] During use, the lower conduit 21 is quickly inserted from the bottom limiting ring 5 into the conduit housing 1 and the lower sealing seat 3. When concrete flows through the sealed conduit, the tight fit between the bottom limiting ring 5 and the lower conduit 21 effectively prevents concrete leakage from the connection, thereby ensuring the quality and efficiency of concrete pouring. In addition, the flared design makes the bottom limiting ring 5 easier to install and remove, improving construction efficiency.
[0034] The sealing ring 10 is a hollow elastic sealing body, and the sealing ring 10 is made of wear-resistant nitrile rubber.
[0035] By using wear-resistant nitrile rubber to make the sealing ring 10, not only is its excellent sealing performance guaranteed, but its wear resistance is also improved, extending the service life of the entire sealing assembly. Nitrile rubber has good elasticity and wear resistance, which can maintain a stable sealing effect during long-term use. It can effectively prevent concrete leakage even under high pressure and harsh environments. In addition, this material also has good chemical corrosion resistance, which can adapt to the needs of different types of concrete pouring, further improving the applicability and practicality of the sealing conduit.
[0036] Working Principle: In operation, concrete is first poured into the delivery pipe 17. The concrete enters through the delivery pipe 17 and flows downwards along the lower guide pipe 21. During this process, the sealing components play a crucial role. The multiple sets of pre-tightening springs 7 enhance the stability of the movement between the main sealing ring 8, the secondary sealing ring 9, and the sealing ring 10. The sealing ring 10, as a hollow elastic sealing body, fits tightly between the main sealing ring 8 and the secondary sealing ring 9, effectively preventing concrete leakage. Simultaneously, the bottom limiting ring 5 limits the positioning seat 6, further ensuring the sealing effect. The sealing is achieved through the pipe end flange 19 and the connecting... The upper side of the flange 20 is rotatably connected, and the delivery pipe 17 can be stably inserted into the sealing assembly through the cooperation of the mating sleeve 13, positioning frame 14, multiple sets of rollers 15 and sleeve 16. The optimal sealing state can be achieved by rotation adjustment. The end face sealing gasket 18 further enhances the fit between the delivery pipe 17 and the mating flange 20, effectively preventing the risk of leakage due to loose connection. When concrete flows through the delivery pipe 17 and the lower conduit 21, the delivery pipe 17 is tightly fitted with the lower conduit 21 under the action of the sealing assembly, which can effectively prevent concrete leakage from the connection even under high pressure.
[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A sealed conduit for concrete pouring, comprising a conduit shell (1), characterized in that: Multiple sets of fixing bolts (2) are fixedly installed at the upper end of the conduit housing (1). A lower sealing seat (3) is fixedly installed inside the conduit housing (1). An upper sealing cover (4) is fixedly installed at the upper end of the multiple sets of fixing bolts (2) by nuts. The upper sealing cover (4) is in contact with the upper side of the lower sealing seat (3). A bottom limiting ring (5) is fixedly installed inside the conduit housing (1). A positioning seat (6) is provided inside the lower sealing seat (3). The upper side of the bottom limiting ring (5) is in contact with the positioning seat (6). A delivery pipe (17) is provided inside the lower sealing seat (3) and the upper sealing cover (4). A lower conduit (21) is provided inside the conduit housing (1). A sealing component is provided on the positioning seat (6). A docking component is provided inside the upper sealing cover (4).
2. The sealed conduit for concrete pouring according to claim 1, characterized in that: The sealing assembly includes multiple sets of pre-tightening springs (7), each set of pre-tightening springs (7) being positioned on the upper side of a positioning seat (6). A main sealing ring (8) is fitted inside the lower sealing seat (3), and a secondary sealing ring (9) is movably fitted inside the lower sealing seat (3). The lower end of the main sealing ring (8) is in contact with the secondary sealing ring (9). A sealing ring (10) is provided on one side of the contact area between the main sealing ring (8) and the secondary sealing ring (9). 9) The connection point is fitted with the connection point of the delivery pipe (17) and the lower conduit (21). A sealing cover (11) is movably installed in the lower sealing seat (3). The main sealing ring (8), the secondary sealing ring (9) and the sealing ring (10) are located in the sealing cover (11). A positioning ring (12) is provided on the upper side of the main sealing ring (8). The positioning ring (12) is fitted with the lower outer wall of the delivery pipe (17). The upper side of the positioning ring (12) is fitted with the upper sealing cover (4).
3. A sealed conduit for concrete pouring according to claim 1, characterized in that: The docking assembly includes a docking sleeve (13), which is fitted onto the conveying pipe (17). A positioning frame (14) is fitted onto the outer wall of the docking sleeve (13). Multiple sets of rollers (15) are installed in a ring on the positioning frame (14). A sleeve (16) is fitted onto the outer wall of the positioning frame (14) and the multiple sets of rollers (15). A pipe end flange (19) is fixedly installed at the upper end of the conveying pipe (17). A docking flange (20) is provided on the outer wall of the conveying pipe (17) and the sleeve (16). The docking flange (20) is fixedly connected to the upper sealing cover (4).
4. A sealed conduit for concrete pouring according to claim 3, characterized in that: The upper side of the docking sleeve (13) is provided with an end face sealing gasket (18), which is respectively attached to the outer wall of the conveying pipe (17) and the upper inner wall of the docking flange (20).
5. A sealed conduit for concrete pouring according to claim 1, characterized in that: The lower end of the bottom limiting ring (5) is flared, and the inner diameter of the bottom limiting ring (5) is the same as the outer diameter of the lower conduit (21).
6. A sealed conduit for concrete pouring according to claim 2, characterized in that: The sealing ring (10) is a hollow elastic sealing body, and the sealing ring (10) is made of wear-resistant nitrile rubber.