Novel pipeline connecting device for water supply and drainage
By using a rotary drive and a self-locking mechanism, the design solves the problems of low bolt fixing efficiency and easy loosening in existing pipe connection devices, enabling rapid disassembly and efficient installation, and ensuring the stability and sealing of pipe connections.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-12
- Publication Date
- 2026-03-03
AI Technical Summary
In existing pipe connection devices, bolt fixing is inefficient and prone to loosening, affecting sealing and causing leakage.
The system employs a rotary drive mechanism and a self-locking mechanism. Through the coordinated design of the positioning support sleeve and the threaded pipe, it enables quick disassembly and fastening. Combined with the limiting support rod and spring preload, it forms a dual anti-loosening mechanism to ensure the stability and sealing of the pipeline connection.
It improves the installation efficiency of pipe connections, avoids displacement and leakage caused by accidental contact or external force, and ensures the tightness and sealing of pipe connections.
Smart Images

Figure CN223965076U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pipe connection, and in particular to a novel pipe connection device for water supply and drainage. Background Technology
[0002] An existing patent (publication number: CN212156234U) discloses a pipeline connection device for municipal water supply and drainage engineering, including a pipeline connection box, fixed foundation piles, and a shock-absorbing box. A fixed sliding plate is fixedly connected to the bottom of the pipeline connection box and within the inner cavity of the shock-absorbing box. A shock-absorbing connector is fixedly connected to the bottom of the inner cavity of the shock-absorbing box. Shock absorbers are fixedly connected to the bottom of the inner cavity of the shock-absorbing box and to the left and right of the shock-absorbing connector. This utility model relates to the field of pipeline connection technology. However, in this device, the "drainage pipe" and the "pipeline connection pipe" flange are fixedly connected by bolts. Tightening multiple sets of bolts one by one results in low operational efficiency. Furthermore, if any bolt loosens, it will affect the sealing of the pipeline connection, leading to leakage, which is a drawback. Summary of the Invention
[0003] This utility model addresses the aforementioned shortcomings of the existing technology by providing a novel water supply and drainage pipe connection device that allows for quick assembly and disassembly of drainage pipes by rotating a wheel. This device is convenient to operate, improves the efficiency of water supply and drainage pipe connection and installation, and, by adding a self-locking mechanism, prevents pipe displacement and leakage caused by accidental contact or other external forces, thus ensuring the tightness and sealing of pipe connections.
[0004] The objective of this utility model is achieved through the following technical solution:
[0005] A novel pipe connection device for water supply and drainage includes a drainage pipe, a sealing ring, a limiting support rod, a positioning sleeve, a fixing pipe, a main gear, a locking sleeve, and a buckle plate. The drainage pipe has a No. 2 flange with a threaded pipe. The fixing pipe has No. 1 flanges at both ends, and the No. 1 flanges connect to the threaded pipes to form a sealing groove. The sealing groove is compatible with the sealing ring, and the sealing ring is connected to the sealing groove. The No. 1 flanges have limiting support rods on both sides, and the threaded pipes have limiting support rod grooves on both sides. The limiting support rods are compatible with the limiting support rod grooves and are connected to the limiting support rod grooves. The threaded pipe is connected to the positioning sleeve via threads. The positioning sleeve has a rotating plate with a rotating wheel on the outside. The No. 2 flange is attached to the outside of the rotating plate, and the No. 1 flange is attached to the inside of the rotating plate.
[0006] The positioning support sleeve of this utility model has an external auxiliary gear and an internal rotating sleeve. The rotating sleeve is connected to the inside of the No. 1 bearing. The No. 1 bearing is connected to the outside of the No. 1 flange. The No. 1 flange is fitted with the main gear. The main gear meshes with the auxiliary gear. The main gear is connected to the auxiliary gear. The main gear has a rotating rod. The rotating rod is connected to the inside of the No. 2 bearing. The No. 1 flange is connected to the outside of the No. 2 bearing.
[0007] The rotating rod of this utility model passes through the first flange and the locking sleeve in sequence. The locking sleeve fits into the buckle plate. The locking sleeve has a locking block inside. The rotating rod has multiple locking grooves. The locking block is adapted to the locking groove and the locking block is connected to the locking groove.
[0008] The lower end of the lock sleeve of this utility model has a support rod, the fixing tube has a support rod groove, the support rod groove is adapted to the support rod, the support rod is connected to the support rod groove, the support rod is connected to the upper end of the spring, and the lower end of the spring is connected to the fixing tube. Beneficial effects
[0009] This utility model achieves rapid fastening between pipe flanges through the coordinated design of positioning support and threaded pipe, combined with a rotary drive mechanism. Compared with the traditional method of tightening bolts one by one, its single-point rotation operation is more convenient, which can improve the efficiency of water supply and drainage pipe connection and installation, and avoid local bolt loosening, which would affect the pipe seal.
[0010] This utility model uses a locking sleeve to link and position the main gear and the auxiliary gear. When the locking block is embedded in the locking groove, the rotating rod is braked and locked, thereby ensuring the stability of the pipe connection. In conjunction with the preload of the spring at the bottom of the support rod, a double anti-loosening mechanism is formed to prevent the positioning support sleeve from rotating due to accidental contact or other external forces, which could cause the threaded pipe to shift and displace, thus ensuring the tightness and sealing of the pipe connection.
[0011] This utility model's limiting support rod facilitates precise alignment between pipes during the initial installation phase. Furthermore, by embedding the limiting support rod into the limiting support rod groove, it increases the limiting support point for the drainage pipe, ensuring its linear displacement and preventing it from rotating due to the rotational force of the positioning support sleeve during assembly and disassembly. In conjunction with a sealing ring, it enhances the sealing of pipe connections, preventing leakage.
[0012] This utility model allows for quick assembly and disassembly of drainage pipes by rotating a wheel, making operation convenient and improving the efficiency of connecting and installing water supply and drainage pipes. At the same time, by adding a self-locking mechanism, it avoids pipe displacement and leakage caused by accidental contact or other external forces, ensuring the tightness and sealing of pipe connections. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of the novel water supply and drainage pipe connection device described in this utility model.
[0014] Figure 2 This is an exploded view of the structure of the novel water supply and drainage pipe connection device described in this utility model.
[0015] Figure 3 This is a schematic diagram of the lock sleeve structure described in this utility model.
[0016] Figure 4 This is a schematic diagram of the fixed tube structure described in this utility model.
[0017] Figure 5 This is a cross-sectional view of the novel water supply and drainage pipe connection device described in this utility model.
[0018] Figure 6 This is a cross-sectional view of the connection structure between the main gear and the auxiliary gear described in this utility model.
[0019] Figure 7 This is a cross-sectional view of the rotating rod positioning structure described in this utility model. Detailed Implementation
[0020] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments:
[0021] Example 1:
[0022] A novel pipe connection device for water supply and drainage includes a drainage pipe 01, a sealing ring 03, a limiting support rod 04, a positioning support sleeve 08, a fixing pipe 13, a main gear 14, a locking sleeve 18, and a buckle plate 26. The drainage pipe 01 has a second flange 06, which has a threaded pipe 07. The fixing pipe 13 has first flanges 29 at both ends. The first flanges 29 connect to the threaded pipe 07 to form a sealing groove 02. The sealing groove 02 is compatible with the sealing ring 03. 03 connects to the sealing groove 02. The first flange 29 has limiting support rods 04 on both sides, and the threaded pipe 07 has limiting support rod grooves 05 on both sides. The limiting support rods 04 and 05 are compatible, and the limiting support rods 04 connect to the limiting support rod grooves 05. The threaded pipe 07 is connected to a positioning sleeve 08 via threads. The positioning sleeve 08 has a rotating plate 11, and a rotating wheel 12 on the outside of the rotating plate 11. The outer side of the rotating plate 11 is fitted with the second flange 06, and the inner side of the rotating plate 11 is fitted with the first flange 29. The limiting support rods 04 facilitate precise alignment between pipes during initial installation. Furthermore, by embedding the limiting support rods 04 into the limiting support rod grooves 05, they increase the limiting support point for the drainage pipe 01, ensuring its linear displacement and preventing it from rotating due to the rotational force of the positioning sleeve 08 during disassembly and assembly. They also work with the sealing ring 03 to increase the sealing of the pipe connection and prevent leakage.
[0023] Example 2:
[0024] The positioning support 08 of this utility model has an external auxiliary gear 15 and an internal rotating sleeve 09. The rotating sleeve 09 is connected to the inside of the first bearing 10. The first bearing 10 is externally connected to the first flange 29. The first flange 29 is fitted with the main gear 14. The main gear 14 meshes with the auxiliary gear 15 and is connected to the auxiliary gear 15. The main gear 14 has a rotating rod 17, which is connected to the inside of the second bearing 16. The second bearing 16 is externally connected to the first flange 29. Through the coordinated design of the positioning support 08 and the threaded pipe 07, and in conjunction with the drive mechanism of the rotating wheel 12, rapid fastening between pipe flanges is achieved. Compared with the traditional method of tightening bolts one by one, its single-point rotation operation is more convenient. It can improve the efficiency of connection and installation of water supply and drainage pipes, and at the same time, it can avoid local bolt loosening, which would affect the pipe seal.
[0025] Example 3:
[0026] The rotating rod 17 of this utility model passes through the first flange 29 and the locking sleeve 18 in sequence. The locking sleeve 18 is attached to the buckle plate 26. The locking sleeve 18 has a locking block 19 inside. The rotating rod 17 has multiple locking grooves 20. The locking block 19 is adapted to the locking grooves 20 and is connected to the locking grooves 20.
[0027] Example 4:
[0028] The lower end of the locking sleeve 18 of this utility model has a support rod 21, and the fixed tube 13 has a support rod groove 23. The support rod groove 23 is adapted to the support rod 21. The support rod 21 is connected to the support rod groove 23. The upper end of the support rod 21 is connected to the spring 22, and the lower end of the spring 22 is connected to the fixed tube 13. By adding the locking sleeve 18, the main gear 14 and the secondary gear 15 are linked and positioned. When the locking block 19 is embedded in the locking groove 20, the rotating rod 17 is braked and locked, thereby ensuring the stability of the pipe connection. In conjunction with the pre-tightening force of the spring 22 at the lower part of the support rod 21, a double anti-loosening mechanism is formed to avoid the positioning support sleeve 08 from rotating due to accidental contact or other external forces, which would cause the threaded tube 07 to move and displace, thus ensuring the tightness and sealing of the pipe connection.
[0029] Example 5:
[0030] The upper end of the locking sleeve 18 of this utility model has a pressure rod 25, the pressure rod 25 has a pressure plate 24, the pressure rod 25 fits against the buckle plate 26, the buckle plate 26 is connected to the first flange 29, the buckle plate 26 has a locking plate 27, the pressure rod 25 has a locking groove 28, the locking plate 27 is adapted to the locking groove 28, and the locking plate 27 is connected to the locking groove 28. This device can quickly disassemble and assemble the drainage pipe 01 by rotating the rotating wheel 12. It is convenient to operate and improves the efficiency of connecting and installing water supply and drainage pipes. At the same time, by adding a self-locking mechanism, it avoids pipe displacement and leakage caused by accidental contact or other external forces, and ensures the tightness and sealing of the pipe connection.
[0031] Example 6:
[0032] Installation steps: First, assemble the structure of the fixed tube 13. Place the spring 22 in the support rod groove 23, and fix the lower end of the spring 22 to the fixed tube 13. Then, place the locking sleeve 18 on the upper part of the fixed tube 13, and embed the support rod 21 into the support rod groove 23, pressing it against the upper end of the spring 22. The inner surface of the locking sleeve 18 should fit against the first flange 29. Then, fasten the buckle 26 to the outside of the pressure rod 25, and fix the buckle 26 to the first flange 29. Embed the clamping plate 27 into the clamping groove 28. Finally, embed the rotating rod 17 into the second flange. The main gear 14 is inserted into the bearing 16 and then passes through the first flange 29 and the locking sleeve 18 in sequence until the inner surface of the main gear 14 is in contact with the first flange 29 and the locking block 19 is embedded in the locking groove 20. Finally, the positioning support sleeve 08 is placed into the first flange 29 and the rotating sleeve 09 is embedded into the first bearing 10. The auxiliary gear 15 is meshed with the main gear 14 and the inner surface of the rotating plate 11 is in contact with the outer surface of the first flange 29. After the fixed pipe 13 structure is assembled, the sealing ring 03 is placed into the sealing groove 02. Then, the drainage pipe 01 is placed outside the fixed pipe 13 and the limiting support rod 04 is embedded into the limiting support rod groove 05. Finally, by rotating the rotating wheel 12, the threaded pipe 07 is tightened and fixed inward until the inner surface of the second flange 06 is in contact with the rotating plate 11, and the installation is completed.
[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. A novel pipe connection device for water supply and drainage, characterized in that: The system includes a drainage pipe (01), a sealing ring (03), a limiting support rod (04), a positioning support sleeve (08), a fixing pipe (13), a main gear (14), a locking sleeve (18), and a buckle plate (26). The drainage pipe (01) has a second flange (06), which has a threaded pipe (07). The fixing pipe (13) has a first flange (29) at both ends. The first flange (29) connects to the threaded pipe (07) to form a sealing groove (02). The sealing groove (02) is compatible with the sealing ring (03). The sealing ring (03) is connected to the sealing ring. The groove (02) and the first flange (29) have limiting support rods (04) on both sides. The threaded pipe (07) has limiting support rod grooves (05) on both sides. The limiting support rods (04) are adapted to the limiting support rod grooves (05). The limiting support rods (04) are connected to the limiting support rod grooves (05). The threaded pipe (07) is connected to the positioning support sleeve (08) by thread. The positioning support sleeve (08) has a rotating plate (11). The rotating plate (11) has a rotating wheel (12) on its outside. The second flange (06) is attached to the outside of the rotating plate (11). The first flange (29) is attached to the inside of the rotating plate (11).
2. The novel pipe connection device for water supply and drainage according to claim 1, characterized in that: The positioning sleeve (08) has an external auxiliary gear (15) and an internal rotating sleeve (09). The rotating sleeve (09) is connected to the inside of the first bearing (10). The first bearing (10) is connected to the outside of the first flange (29). The first flange (29) is fitted with the main gear (14). The main gear (14) meshes with the auxiliary gear (15). The main gear (14) is connected to the auxiliary gear (15). The main gear (14) has a rotating rod (17). The rotating rod (17) is connected to the inside of the second bearing (16). The second bearing (16) is connected to the outside of the first flange (29).
3. The novel water supply and drainage pipe connection device according to claim 2, characterized in that: The rotating rod (17) passes through the first flange (29) and the locking sleeve (18) in sequence. The locking sleeve (18) fits against the buckle plate (26). The locking sleeve (18) has a locking block (19) inside. The rotating rod (17) has multiple locking grooves (20). The locking block (19) is adapted to the locking groove (20). The locking block (19) is connected to the locking groove (20).
4. The novel water supply and drainage pipe connection device according to claim 3, characterized in that: The lower end of the lock sleeve (18) has a support rod (21), the fixed tube (13) has a support rod groove (23), the support rod groove (23) is adapted to the support rod (21), the support rod (21) is connected to the support rod groove (23), the support rod (21) is connected to the upper end of the spring (22), and the lower end of the spring (22) is connected to the fixed tube (13).
5. The novel pipe connection device for water supply and drainage according to claim 1, characterized in that: The upper end of the lock sleeve (18) has a pressure rod (25), the pressure rod (25) has a pressure plate (24), the pressure rod (25) fits against the buckle plate (26), the buckle plate (26) is connected to the first flange (29), the buckle plate (26) has a locking plate (27), the pressure rod (25) has a locking groove (28), the locking plate (27) is adapted to the locking groove (28), and the locking plate (27) is connected to the locking groove (28).
Citation Information
Patent Citations
Municipal water supply and drainage engineering pipeline connecting device
CN212156234U