Stainless steel water pipe sealing connecting piece
By combining the main pipe, retaining ring, locking element, and sealing ring, the problem of irreversibility and poor sealing performance of stainless steel water pipe connections is solved, achieving efficient and stable water pipe connections that are suitable for sealing performance and rapid installation under high pressure environments.
Patent Information
- Application Number
- CN202520452987.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-15
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-03-15
AI Technical Summary
Existing stainless steel water pipe connection methods have problems such as irreversibility, poor sealing performance, complicated operation, high cost, and easy leakage, especially under high pressure or high flow rate conditions, it is difficult to guarantee the sealing effect.
It adopts a combination structure of main pipe, retaining ring, locking element, outer sealing ring, inner sealing ring and annular pressure bladder, and achieves quick fastening connection by driving the slot and slide bar, and uses multiple sealing methods to ensure the sealing of the pipe connection.
It achieves excellent sealing performance under high pressure and high flow rate conditions, simplifies the installation process, improves the stability and safety of the water pipe system, and saves installation time and labor costs.
Smart Images

Figure CN223768335U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of water pipe connectors, and in particular to a stainless steel water pipe sealing connector. Background Technology
[0002] In pipeline engineering, especially the connection and sealing of stainless steel water pipes, the proper functioning of the entire fluid transport system is crucial. Traditional stainless steel water pipe connection and sealing methods mainly include welding, threaded connections, and flange connections. However, these traditional connection methods all have some significant shortcomings.
[0003] Welding is a common connection method that involves heating and melting the joints of water pipes to fuse them together. However, this method is irreversible. Once welded, separating the pipe from the weld becomes extremely difficult during subsequent pipe repairs, replacements, or modifications. It usually requires cutting and re-welding, which is not only complex but also affects the structural integrity of the entire piping system. Threaded connections are widely used in small stainless steel water pipe systems, but they also have some drawbacks. For larger diameter pipes, thread processing is difficult and costly. Furthermore, during the connection process, the sealing performance is difficult to guarantee due to the clearance between the threads, especially in high-pressure or high-flow-rate fluid transport systems, which can easily lead to fluid leakage. Simultaneously, over time, the threads may wear down due to pipe vibration, water flow impact, and corrosion, further increasing the risk of leakage. Moreover, after long-term use, threaded connections may loosen, leading to connection failure and affecting system stability.
[0004] Flange connections typically use a pair of flanges and bolts and nuts to connect water pipes. While this method facilitates disassembly and maintenance, it is structurally complex, requiring multiple bolts for tightening in practice, making the installation process cumbersome and consuming significant time and manpower. Furthermore, the sealing effect is generally poor. Additionally, bolts may loosen due to vibration during use, affecting sealing performance and posing a threat to the stability and safety of the piping system.
[0005] Therefore, it is necessary to provide a new stainless steel water pipe sealing connector to solve the above-mentioned technical problems. Utility Model Content
[0006] To solve the above-mentioned technical problems, this utility model provides a stainless steel water pipe sealing connector.
[0007] This utility model provides a stainless steel water pipe sealing connector, comprising: a main pipe, both ends of which are provided with retaining rings, each retaining ring being provided with a locking element; an outer protrusion fixedly connected to the outer wall of the main pipe, a side bracket fixedly connected to the outer protrusion, and two bottom plates symmetrically fixedly connected to the lower end of the side bracket; and a locking and sealing mechanism, comprising two matching slots, the two matching slots being symmetrically arranged on the pipe walls at both ends of the main pipe, each matching slot having an outer sealing ring on one side of its groove wall and an inner sealing ring on the other side of its groove wall, and an annular pressure bladder installed at the bottom of each matching slot.
[0008] Preferably, a main concave ring groove is provided on one side wall of the two slots, and the two outer sealing rings are respectively fixedly installed in the two main concave ring grooves.
[0009] Preferably, the other side wall of the two slots is provided with a secondary concave ring groove, and the two inner sealing rings are respectively fixedly installed in the two secondary concave ring grooves.
[0010] Preferably, a main delivery pipe is provided between the two annular pressure bladders and the two outer sealing rings, and a secondary delivery pipe is provided between the two annular pressure bladders and the two inner sealing rings.
[0011] Preferably, each end of the side frame is symmetrically slidably connected to two slide rods, and one end of each of the two slide rods on the same side is fixedly connected to a drive plate, and a locking assembly is provided between the two bottom plates.
[0012] Preferably, the locking assembly includes a locking shaft, the two ends of which are rotatably connected to two base plates respectively. Both drive plates have protrusions at their lower ends. A wheel is installed and connected to one end of the locking shaft. The two ends of the locking shaft have threads in opposite directions. Both protrusions have threaded openings and are threaded to the two ends of the locking shaft respectively.
[0013] Preferably, the lower end of the side frame is provided with symmetrical through slots, and the two protrusions are slidably connected to the two ends of the through slots respectively.
[0014] Compared with related technologies, the stainless steel water pipe sealing connector provided by this utility model has the following advantages:
[0015] 1. This utility model connects two pipes by means of a main pipe, and uses an annular pressure bladder to deliver gas through the main and auxiliary delivery pipes to the inside of the outer and inner sealing rings, forming a bidirectional seal on the inner walls of both sides of the slot, achieving a multi-seal effect. This sealing method can effectively prevent fluid leakage at the connection point, and can ensure good sealing performance even under high pressure and high flow rate conditions, improving the stability and safety of the water pipe system and meeting the usage requirements in different environments.
[0016] 2. This utility model achieves rapid fastening of water pipe bodies through a unique structure including a retaining ring and a drive plate. Simply insert the pipe body into the retaining ring and into the slot of the main pipe, then tighten the locking device on the retaining ring. Then, rotate the wheel to move the protrusion and the drive plate, which in turn drives the retaining ring through the sliding rod to press the pipe body further into the slot. The entire operation is simple and convenient, requiring no complicated tools or cumbersome steps, greatly saving installation time and labor costs. It is especially suitable for scenarios that require rapid completion of pipeline laying or emergency pipeline repair, significantly improving work efficiency and ensuring project progress. Attached Figure Description
[0017] Figure 1 A schematic diagram of a preferred embodiment of this utility model;
[0018] Figure 2 for Figure 1 The diagram shows a cross-sectional view of the main body.
[0019] Figure 3 for Figure 2 The diagram shows the structure at point A.
[0020] Figure 4 for Figure 1 The diagram shows the structure at point B.
[0021] The following are the labels in the diagram: 1. Main pipe; 2. Snap ring; 21. Locking element; 3. Outer protrusion; 31. Side frame; 32. Bottom plate; 4. Alignment slot; 41. Outer sealing ring; 42. Inner sealing ring; 43. Annular pressure bladder; 431. Main conveying pipe; 432. Auxiliary conveying pipe; 5. Slide rod; 51. Drive plate; 6. Locking shaft; 61. Protrusion; 62. Wheel. Detailed Implementation
[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0023] Please refer to the following: Figures 1 to 4 A stainless steel water pipe sealing connector includes: a main pipe 1, with retaining rings 2 at both ends of the main pipe 1, and locking elements 21 on both retaining rings 2; an outer protrusion 3 fixedly connected to the outer wall of the main pipe 1, and a side bracket 31 fixedly connected to the outer protrusion 3; two bottom plates 32 symmetrically fixedly connected to the lower end of the side bracket 31; and a locking sealing mechanism, including two matching slots 4, which are symmetrically arranged on the pipe walls at both ends of the main pipe 1; an outer sealing ring 41 on one side of the groove wall of each matching slot 4, and an inner sealing ring 42 on the other side of the groove wall of each matching slot 4; and an annular pressure bladder 43 installed at the bottom of each matching slot 4.
[0024] In the specific implementation process, such as Figure 2 and Figure 3 As shown, a main concave ring groove is provided on one side wall of the two slots 4, and two outer sealing rings 41 are respectively fixedly installed in the two main concave ring grooves.
[0025] It should be noted that the internal air pressure of the outer sealing ring 41 in the two main concave grooves is increased, allowing it to press tightly against the outer wall of the pipe body, thus completing a first seal.
[0026] refer to Figure 3 As shown, the other side wall of the two slots 4 is provided with a secondary concave ring groove, and the two inner sealing rings 42 are respectively fixedly installed in the two secondary concave ring grooves.
[0027] It should be noted that the internal air pressure of the inner sealing ring 42 in the two secondary concave grooves is enhanced, allowing it to press tightly against the inner wall of the pipe body, thus achieving a double seal.
[0028] refer to Figure 2 and Figure 3 As shown, a main delivery pipe 431 is provided between the two annular pressure bladders 43 and the two outer sealing rings 41, and a secondary delivery pipe 432 is provided between the two annular pressure bladders 43 and the two inner sealing rings 42.
[0029] It should be noted that the gas inside the annular pressure bladder 43 is then transported through the two main delivery pipes 431 and the two auxiliary delivery pipes 432 to the interior of the two outer sealing rings 41 and the two inner sealing rings 42, thereby changing the internal pressure.
[0030] refer to Figure 1 and Figure 4 As shown, two slide rods 5 are symmetrically slidably connected to both ends of the side frame 31. One end of each of the two slide rods 5 on the same side is fixedly connected to a drive plate 51, and a locking assembly is provided between the two bottom plates 32.
[0031] It should be noted that: the movement of the two drive plates 51 causes the multiple slide rods 5 to move the two retaining rings 2 closer to each other, thereby causing the two tubes to be further pressed into the slots 4 at both ends of the main tube 1.
[0032] refer to Figure 4 As shown, the locking assembly includes a locking shaft 6, with both ends of the locking shaft 6 rotatably connected to two base plates 32 respectively. Both drive plates 51 have protrusions 61 at their lower ends. A wheel 62 is installed and connected to one end of the locking shaft 6. The two ends of the locking shaft 6 have threads in opposite directions. Both protrusions 61 have threaded openings and are threaded to both ends of the locking shaft 6 respectively.
[0033] It should be noted that rotating the wheel 62 causes the two protrusions 61 to move the two drive plates 51, so that the multiple slide rods 5 drive the two retaining rings 2 to move closer to each other, so that the two pipes are pressed further into the slots 4 at both ends of the main pipe 1, thus achieving a quick and secure connection between the two water pipes.
[0034] refer to Figure 1 and Figure 4 As shown, the lower end of the side frame 31 is symmetrically provided with through slots, and two protrusions 61 are slidably connected to the two ends of the through slots respectively.
[0035] It should be noted that the through slot limits the movement direction of the two protrusions 61.
[0036] The working principle of the stainless steel water pipe sealing connector provided by this utility model is as follows: Two pipes are respectively inserted into two retaining rings 2, and two pipes are respectively inserted into the slots 4 at both ends of the main pipe 1. Then, the locking pieces 21 on the two retaining rings 2 are locked to complete the initial connection and alignment between the main pipe 1 and the two pipes. The wheel 62 is rotated to drive the two protrusions 61 to move the two drive plates 51, so that multiple sliding rods 5 drive the two retaining rings 2 to move closer to each other, so that the two pipes are further pressed into the slots 4 at both ends of the main pipe 1, thus realizing the quick fastening connection of the two water pipes.
[0037] When the ends of the two tubes are respectively inserted into the annular pressure bladders 43 in the two slots 4, the gas inside them is transported through the two main delivery pipes 431 and the two auxiliary delivery pipes 432 to the inside of the two outer sealing rings 41 and the two inner sealing rings 42. By utilizing the bidirectional sealing on the inner walls on both sides of the slots 4, multiple efficient seals are achieved at the connection between the tube and the main pipe 1, ensuring a good sealing effect.
[0038] The scope of this utility model patent includes any equivalent structural or procedural transformations made using the description and drawings of this utility model, or any direct or indirect applications in other related technical fields.
Claims
1. A stainless steel water pipe sealing connector, characterized by, Include: The main pipe (1), both ends of the main pipe (1) are provided with a collar (2), two locking members (21) are arranged on the collar (2), the outer wall of the main pipe (1) is fixedly connected with an outer boss (3), the outer boss (3) is fixedly connected with a side frame (31), the lower end of the side frame (31) is fixedly connected with two bottom sheets (32) symmetrically. The locking and sealing mechanism comprises two insertion grooves (4), two insertion grooves (4) are symmetrically arranged on the pipe wall of the main pipe (1), one side groove wall of the two insertion grooves (4) is provided with an outer sealing ring (41), the other side groove wall of the two insertion grooves (4) is provided with an inner sealing ring (42), and the groove bottom position of the two insertion grooves (4) is connected with an annular compression bag (43).
2. A seal for connecting stainless steel water pipes according to claim 1, wherein One side groove wall of the two insertion grooves (4) is provided with a main concave groove, and the two outer sealing rings (41) are fixedly installed in the two main concave grooves respectively.
3. A seal for connecting stainless steel water pipes according to claim 1, wherein The other side groove wall of the two insertion grooves (4) is provided with a vice concave groove, and the two inner sealing rings (42) are fixedly installed in the two vice concave grooves respectively.
4. A stainless steel water pipe sealing connector according to claim 1, wherein The two annular compression bags (43) and the two outer sealing rings (41) are provided with a main conveying pipe (431), and the two annular compression bags (43) and the two inner sealing rings (42) are provided with a vice conveying pipe (432).
5. A stainless steel water pipe sealing connector according to claim 1, wherein Both ends of the side frame (31) are symmetrically connected with two slide rods (5), one end of the slide rod (5) is fixedly connected with a driving plate (51), and the two bottom sheets (32) are provided with a locking assembly.
6. A stainless steel water pipe sealing connector according to claim 5, wherein The locking assembly comprises a locking shaft (6), the two ends of the locking shaft (6) are rotatably connected with the two bottom sheets (32), the lower end of the driving plate (51) is provided with a protrusion (61), one end of the locking shaft (6) is connected with a wheel disc (62), the two ends of the locking shaft (6) are provided with threads in opposite directions, the protrusion (61) is provided with a threaded hole, and the two protrusions (61) are threadedly connected with the two ends of the locking shaft (6) respectively.
7. A stainless steel water pipe sealing connector according to claim 6, wherein The lower end of the side frame (31) is symmetrically provided with a through groove, and the two protrusions (61) are slidably connected with the two ends of the through groove respectively.