Stainless steel threaded pipe quick coupling

Abstract

This utility model discloses a quick connector for stainless steel threaded pipes, including two stainless steel threaded pipe bodies and a pipe connector connected to the outer side of the two stainless steel threaded pipe bodies. An inner retaining ring seat is provided in the middle of the inner part of the pipe connector. A limiting groove is formed on the outer side of one end of the stainless steel threaded pipe body inside the pipe connector, and the inner retaining ring seat is placed within the limiting groove. A sealing structure is provided between the inner retaining ring seat and the stainless steel threaded pipe body. Two sets of ball bearing mounting grooves are respectively provided on the pipe connector at the two stainless steel threaded pipe bodies. Each set of ball bearing mounting grooves has multiple grooves evenly spaced along the circumference. A locking ball is provided in the ball bearing mounting groove. This utility model allows for simultaneous locking and clamping of the two sets of locking balls by rotating the adjusting sleeve, thereby synchronously connecting and fixing the two stainless steel threaded pipe bodies to the pipe connector, greatly improving operational convenience and assembly efficiency.

Description

Technical Field

[0001] This utility model relates to the field of pipe fitting technology, specifically a stainless steel threaded pipe quick connector. Background Technology

[0002] Stainless steel threaded pipe, also known as stainless steel corrugated pipe, is a flexible, pressure-resistant pipe fitting installed in liquid transportation systems. It compensates for the relative displacement of pipe or machine / equipment connection ends, absorbs vibration energy, and provides vibration damping and noise reduction. It features high flexibility, light weight, corrosion resistance, fatigue resistance, and resistance to high and low temperatures. Stainless steel corrugated pipe is widely used in water pipes, gas pipelines, natural gas pipelines, oil pipelines, and other fields. Common connections between corrugated pipes and other equipment or pipelines include flange connections, welding, and threaded connections. However, flange connections and welding are typically used for larger diameter metal pipes; using these methods for smaller pipes is cumbersome and inefficient. Threaded connections carry the risk of leakage due to PTFE tape detachment.

[0003] A search revealed Chinese Patent Publication No. CN205504255U, which discloses a quick connector for stainless steel threaded pipes. The connector includes an outer connector, a nut, a half-moon clip, a sealing ring, and a stainless steel corrugated pipe. Two half-moons clips are provided, each shaped like a semi-circle. The outer, upper, and lower sides of each half-moon clip are smooth planes, while the inner side has a trapezoidal groove matching the corrugated shape of the stainless steel corrugated pipe. The half-moons clip is fixed to the corrugated portion at the top of the stainless steel corrugated pipe. A nut is installed at the connection between the half-moons clip and the stainless steel corrugated pipe. The outer connector is connected to the half-moons clip, and a sealing ring is installed between the outer connector and the half-moons clip.

[0004] In the above solution, the connection of the stainless steel threaded pipes at both ends of the pipe fitting requires connecting the two stainless steel threaded pipes to the pipe fitting one by one using a half-moon clamp and a nut. This makes it impossible to achieve simultaneous connection of the two stainless steel threaded pipes to the pipe fitting, resulting in cumbersome operation and low connection efficiency. Therefore, it is necessary to design a quick connector for stainless steel threaded pipes to improve the above problems. Utility Model Content

[0005] To overcome the above-mentioned defects, this utility model provides a stainless steel threaded pipe quick connector, which aims to solve the problem that in the prior art, when connecting stainless steel threaded pipes at both ends, it is necessary to connect the two stainless steel threaded pipes to the pipe connector one by one using a half-moon clamp and a nut, which leads to cumbersome operation and low assembly efficiency.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A quick coupling for stainless steel threaded pipes includes two stainless steel threaded pipe bodies and a pipe connector connected to the outside of the two stainless steel threaded pipe bodies. An inner stop ring seat is provided in the middle of the inside of the pipe connector. A limiting groove is formed on the outer side of one end of the stainless steel threaded pipe body placed inside the pipe connector. The inner stop ring seat is placed in the limiting groove. A sealing structure is provided between the inner stop ring seat and the stainless steel threaded pipe body.

[0008] The pipe joint has two sets of ball mounting grooves at the two stainless steel threaded pipe bodies respectively. Each set of ball mounting grooves has multiple balls at equal intervals along the circumference. The ball mounting grooves are equipped with locking balls. The outer wall of the stainless steel threaded pipe body is provided with a ball retaining groove for the locking ball to be inserted.

[0009] An adjusting sleeve is threaded onto the outer side of the pipe joint. The adjusting sleeve moves axially along the pipe joint to adjust the clamping state of the locking ball.

[0010] Preferably, the inner side of the adjusting sleeve is provided with a receiving groove in an annular shape at the two sets of ball bearing mounting grooves, and one side of the receiving groove is designed with a slope.

[0011] Preferably, a tool clip is fixedly sleeved on the outer side of the adjusting sleeve.

[0012] Preferably, the positioning ball has a volume of less than half that of the ball bearing and is placed inside the pipe joint through the ball bearing mounting groove.

[0013] Preferably, the sealing structure includes a first sealing groove circumferentially formed on both sides of the inner stop ring seat and a second sealing groove circumferentially formed on both sides of the inner stop ring seat. A first sealing ring is embedded in the first sealing groove, and a second sealing ring is embedded in the second sealing groove. The first sealing ring and the second sealing ring abut against the stainless steel threaded pipe body.

[0014] Preferably, a limiting groove is formed on the inner wall of the pipe joint along the axial direction, and multiple limiting grooves are equally spaced along the circumferential direction of the inner wall of the pipe joint. At one end of the stainless steel threaded pipe body placed inside the pipe joint, multiple aligning limiting strips are provided along the axial direction and inserted into the limiting grooves.

[0015] Preferably, both ends of the pipe joint are fixedly connected to retaining blocks, and the retaining blocks are provided with a first fixing hole. The outer wall of the stainless steel threaded pipe body is provided with a second fixing hole corresponding to the position of the first fixing hole. The retaining blocks and the stainless steel threaded pipe body are connected and fixed by fixing bolts passing through the first fixing hole and the second fixing hole.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This invention involves inserting one end of two stainless steel threaded pipe bodies into a pipe fitting. An inner stop ring is positioned within a limiting groove, blocking the stainless steel threaded pipe bodies and indicating their proper alignment with the pipe fitting. Rotating the adjusting sleeve moves it axially along the pipe fitting, allowing it to contact the locking balls via the inclined surface of the receiving groove. This causes the locking balls to pass through the ball mounting groove and into the ball slot of the stainless steel threaded pipe body, thus securing the stainless steel threaded pipe body to the pipe fitting. Furthermore, rotating the adjusting sleeve simultaneously engages two sets of locking balls, allowing for synchronized connection and fixation of the two stainless steel threaded pipe bodies to the pipe fitting, significantly improving operational convenience and assembly efficiency. Attached Figure Description

[0018] Figure 1 A schematic diagram of the overall structure of a stainless steel threaded pipe quick coupling;

[0019] Figure 2 This is a cross-sectional view of the pipe fitting structure of a stainless steel threaded quick connector.

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of a stainless steel threaded pipe quick coupling.

[0021] Figure 4 This is a schematic diagram of the pipe fitting and adjusting sleeve structure.

[0022] In the diagram: 1. Pipe fitting; 101. Inner stop ring seat; 102. First sealing ring; 103. Second sealing ring; 104. Ball bearing mounting groove; 105. Limiting groove; 2. Adjusting sleeve; 201. Receiving groove; 3. Tool block; 4. Positioning ball; 5. Fixing block; 501. Fixing bolt; 6. Stainless steel threaded pipe body; 601. Limiting groove; 602. Ball bearing groove; 603. Limiting strip. 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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0024] Example: Please refer to Figures 1-4This embodiment provides a quick connector for stainless steel threaded pipes, including two stainless steel threaded pipe bodies 6 and a pipe connector 1 connected to the outside of the two stainless steel threaded pipe bodies 6. An inner stop ring seat 101 is provided in the middle of the inside of the pipe connector 1. The inner stop ring seat 101 is integrally formed with the pipe connector 1. A limiting groove 601 is formed on the outer side of one end of the stainless steel threaded pipe body 6 inside the pipe connector 1. The inner stop ring seat 101 is placed in the limiting groove 601. When the two stainless steel threaded pipe bodies 6 are quickly connected, one end of the two stainless steel threaded pipe bodies 6 is inserted into the pipe connector 1. When the stainless steel threaded pipe body 6 is installed in the pipe connector 1, the inner stop ring seat 101 is placed in the limiting groove 601, which plays a blocking role for the stainless steel threaded pipe body 6 and is used to indicate that the stainless steel threaded pipe body 6 is installed in the pipe connector 1.

[0025] In this embodiment, as Figure 2 and Figure 3 As shown, the pipe fitting 1 has two sets of ball bearing mounting grooves 104 respectively located at the two stainless steel threaded pipe bodies 6. Each set of ball bearing mounting grooves 104 has multiple grooves evenly spaced along the circumference. A retaining ball 4 is installed in each ball bearing mounting groove 104. A ball bearing retaining groove 602 is circumferentially formed on the outer wall of the stainless steel threaded pipe body 6 for partially engaging the retaining ball 4. An adjusting sleeve 2 is threadedly connected to the outer side of the pipe fitting 1. The adjusting sleeve 2 moves axially along the pipe fitting 1 to adjust the tightness of the retaining ball 4. An accommodating groove 201 is circumferentially formed on the inner side of the adjusting sleeve 2 at the two sets of ball bearing mounting grooves 104. One side of the accommodating groove 201 is designed with a slope. When the stainless steel threaded pipe body 6 is connected to the pipe fitting 1... At a set time, by rotating the adjusting sleeve 2 on the outside of the pipe joint 1, the adjusting sleeve 2 is threadedly connected to the pipe joint 1, causing the adjusting sleeve 2 to move axially along the pipe joint 1. The adjusting sleeve 2 contacts the locking ball 4 through the inclined surface of the receiving groove 201, thereby pressing the locking ball 4 against the pipe joint 1. The locking ball 4 partially passes through the ball mounting groove 104 and is placed inside the pipe joint 1, and is locked into the ball retaining groove 602 of the stainless steel threaded pipe body 6. This is used to install and fix the stainless steel threaded pipe body 6 and the pipe joint 1. Furthermore, by rotating the adjusting sleeve 2, the locking operation of two sets of locking balls 4 can be driven simultaneously, thereby synchronously installing and fixing the two stainless steel threaded pipe bodies 6 and the pipe joint 1, greatly improving the convenience of operation and the efficiency of installation.

[0026] In this embodiment, less than half of the volume of the locking ball 4 passes through the ball mounting groove 104 and is placed inside the pipe joint 1, so that the locking ball 4 will not pass through the ball mounting groove 104 and cause the locking ball 4 to detach. When the stainless steel threaded pipe body 6 is connected to the pipe joint 1, the adjusting sleeve 2 is rotated in the opposite direction so that the inclined surface of the receiving groove 201 will not contact the locking ball 4. At this time, the stainless steel threaded pipe body 6 can push the locking ball 4 to move and be placed in the receiving groove 201 without hindering the installation of the stainless steel threaded pipe body 6.

[0027] In this embodiment, as Figure 1 As shown, a tool block 3 is fixedly sleeved on the outside of the adjusting sleeve 2. A tool such as a wrench is used to lock the tool block 3 on the outside, which is used for quick and convenient rotation of the adjusting sleeve 2. An indicator arrow may be provided on the outside of the tool block 3 to indicate the adjustment direction of the adjusting sleeve 2.

[0028] In this embodiment, as Figure 3 As shown, a sealing structure is provided between the inner stop ring seat 101 and the stainless steel threaded pipe body 6. The sealing structure includes a first sealing groove circumferentially opened on both side walls of the inner stop ring seat 101 and a second sealing groove circumferentially opened on both inner walls of the inner stop ring seat 101. A first sealing ring 102 is embedded in the first sealing groove, and a second sealing ring 103 is embedded in the second sealing groove. The first sealing ring 102 and the second sealing ring 103 abut against the stainless steel threaded pipe body 6. When the stainless steel threaded pipe body 6 and the pipe joint 1 are installed and fixed in place, the first sealing ring 102 abuts against the inner side wall of the limiting groove 601, and the second sealing ring 103 abuts against the inner wall of the limiting groove 601, forming two seals to improve the sealing performance of the connection between the stainless steel threaded pipe body 6 and the pipe joint 1 and prevent leakage.

[0029] In this embodiment, as Figure 2 and Figure 4 As shown, a limiting groove 105 is formed along the axial direction on the inner wall of the pipe fitting 1. Multiple limiting grooves 105 are evenly spaced along the circumferential direction of the inner wall of the pipe fitting 1. Multiple limiting strips 603 are arranged along the axial direction at one end of the stainless steel threaded pipe body 6 placed inside the pipe fitting 1, which are inserted into the limiting grooves 105. The limiting strips 603 are integrally formed with the stainless steel threaded pipe body 6. When the stainless steel threaded pipe body 6 is installed with the pipe fitting 1, the limiting strips 603 on the stainless steel threaded pipe body 6 are aligned and inserted into the limiting grooves 105 in the pipe fitting 1 to limit the radial rotation of the stainless steel threaded pipe body 6 and improve the stability of the connection between the stainless steel threaded pipe body 6 and the pipe fitting 1. It should be noted that the limiting grooves 105 are staggered from the ball mounting grooves 104 and the limiting strips 603 to avoid affecting the movement of the locking ball 4.

[0030] In this embodiment, as Figure 4As shown, both ends of the pipe connector 1 are fixedly connected to retaining blocks 5. The retaining blocks 5 have a first fixing hole. The outer wall of the stainless steel threaded pipe body 6 has a second fixing hole corresponding to the position of the first fixing hole. The retaining blocks 5 and the stainless steel threaded pipe body 6 are connected and fixed by fixing bolts 501 passing through the first fixing hole and the second fixing hole. After the locking ball 4 is inserted into the ball groove 602 of the stainless steel threaded pipe body 6, the second fixing hole is placed at the position corresponding to the first fixing hole under the action of the limiting strip 603 and the limiting groove 105. Then, the retaining blocks 5 and the stainless steel threaded pipe body 6 are connected and fixed by fixing bolts 501 passing through the first fixing hole and the second fixing hole in sequence, which further improves the connection stability between the stainless steel threaded pipe body 6 and the pipe connector 1.

[0031] Working principle: In use, insert one end of each of the two stainless steel threaded pipe bodies 6 into the pipe fitting 1. Align the limiting strip 603 on the stainless steel threaded pipe body 6 with the limiting groove 105 in the pipe fitting 1 to restrict the radial rotation of the stainless steel threaded pipe body 6. When the stainless steel threaded pipe body 6 is properly installed in the pipe fitting 1, the inner stop ring seat 101 is placed in the limiting groove 601, which acts as a stop for the stainless steel threaded pipe body 6 and indicates that the stainless steel threaded pipe body 6 is properly installed relative to the pipe fitting 1. Then, rotate the adjusting sleeve 2 on the outside of the pipe fitting 1 to move the adjusting sleeve 2 axially along the pipe fitting 1, so that it contacts the locking ball 4 through the inclined surface of the receiving groove 201. The locking ball 4 is pressed against the ball mounting groove 104 and inserted into the ball groove 602 of the stainless steel threaded pipe body 6. This is used to fix the stainless steel threaded pipe body 6 to the pipe joint 1. Then, the fixing bolt 501 passes through the first fixing hole and the second fixing hole in sequence to connect and fix the fixing block 5 to the stainless steel threaded pipe body 6, thereby improving the connection stability between the stainless steel threaded pipe body 6 and the pipe joint 1. This utility model can simultaneously drive the locking operation of two sets of locking balls 4 by rotating the adjusting sleeve 2, thereby synchronously fixing the two stainless steel threaded pipe bodies 6 to the pipe joint 1, greatly improving the convenience of operation and the assembly efficiency.

[0032] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A stainless steel threaded pipe quick coupling, comprising two stainless steel threaded pipe bodies (6) and a pipe fitting (1) connected to the outer side between the two stainless steel threaded pipe bodies (6), characterized in that: An inner stop ring seat (101) is provided in the middle of the inside of the pipe joint (1). A limiting groove (601) is opened on the outer side of one end of the stainless steel threaded pipe body (6) inside the pipe joint (1). The inner stop ring seat (101) is placed in the limiting groove (601). A sealing structure is provided between the inner stop ring seat (101) and the stainless steel threaded pipe body (6). The pipe joint (1) is provided with two sets of ball mounting grooves (104) at the two stainless steel threaded pipe bodies (6). Each set of ball mounting grooves (104) is provided with multiple ball mounting grooves at equal intervals along the circumferential direction. The ball mounting grooves (104) are provided with locking balls (4). The outer wall of the stainless steel threaded pipe body (6) is provided with a ball retaining groove (602) for the locking balls (4) to be partially engaged. The outer side of the pipe joint (1) is threaded with an adjusting sleeve (2), which moves axially along the pipe joint (1) to adjust the clamping state of the locking ball (4).

2. The stainless steel threaded pipe quick coupling according to claim 1, characterized in that: The inner side of the adjusting sleeve (2) is provided with a receiving groove (201) in a ring at the two sets of ball bearing mounting grooves (104), and one side of the receiving groove (201) is designed with a slope.

3. A stainless steel threaded pipe quick coupling according to claim 2, characterized in that: The adjustment sleeve (2) is fixedly sleeved with a tool clip (3) on its outer side.

4. A stainless steel threaded pipe quick coupling according to claim 1, characterized in that: The positioning ball (4) has a volume of less than one-half that passes through the ball mounting groove (104) and is placed inside the pipe joint (1).

5. A stainless steel threaded pipe quick coupling according to claim 1, characterized in that: The sealing structure includes a first sealing groove circumferentially opened on both sides of the inner stop ring seat (101) and a second sealing groove circumferentially opened on both sides of the inner stop ring seat (101). A first sealing ring (102) is embedded in the first sealing groove and a second sealing ring (103) is embedded in the second sealing groove. The first sealing ring (102) and the second sealing ring (103) abut against the stainless steel threaded pipe body (6).

6. A stainless steel threaded pipe quick coupling according to claim 1, characterized in that: The inner wall of the pipe joint (1) is provided with a limiting groove (105) along the axial direction. Multiple limiting grooves (105) are provided at equal intervals along the circumferential direction of the inner wall of the pipe joint (1). The stainless steel threaded pipe body (6) is provided with multiple aligning limiting strips (603) inserted into the limiting grooves (105) along the axial direction at one end inside the pipe joint (1).

7. A stainless steel threaded pipe quick coupling according to claim 1, characterized in that: Both ends of the pipe joint (1) are fixedly connected to retaining blocks (5). The retaining blocks (5) have a first fixing hole. The outer wall of the stainless steel threaded pipe body (6) has a second fixing hole corresponding to the position of the first fixing hole. The retaining blocks (5) and the stainless steel threaded pipe body (6) are connected and fixed by fixing bolts (501) passing through the first fixing hole and the second fixing hole.

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