Movable joint structure capable of preventing water leakage

Abstract

The utility model discloses a movable joint structure capable of preventing water leakage, and relates to the field of water pipe fittings, the movable joint structure comprises a stainless steel pipe and pressing grooves formed in the two ends of the surface of the stainless steel pipe through extrusion, external tooth linings are inserted into the two sides of the surface of the stainless steel pipe, and the two ends of the two external tooth linings are spliced into a circle; the two outer tooth linings are clamped and limited through the protrusions and the pressing grooves. One end of the stainless steel pipe is sequentially and movably sleeved with a movable nut and a clamping jaw for locking the stainless steel pipe from left to right, the end of the movable nut is fixed to one end of the clamping jaw, and fastening nuts for abutting against and extruding the clamping jaw are fixed to the peripheries of the two outer tooth linings in a threaded mode. The structure is mainly used for firmly fixing the movable nut and the stainless steel pipe, so that the movable nut and the stainless steel pipe form a whole; therefore, when the stainless steel pipeline deviates in angle or position, the sealing position of the movable joint does not shake or loosen, and water leakage does not occur.

Description

Technical Field

[0001] This application relates to the field of water pipe fittings, and more particularly to a leak-proof fitting structure. Background Technology

[0002] A flexible joint, also known as a union, is a type of pipe connection that allows for adjustment of the connection position. It allows the pipe to rotate or bend within a certain angle range, thus resolving stress issues that may arise during installation and use. For vertical water heaters, flexible joints ensure a flexible connection between the water heater and the water pipes, guaranteeing a tight and stable connection even if the position of the water heater or water pipes changes.

[0003] The existing method of connecting stainless steel rigid pipes with unions can cause leakage when the pipe angle or position shifts. Utility Model Content

[0004] To address the issue of water leakage caused by pipe misalignment in stainless steel rigid pipes and unions, this application provides a union structure that prevents water leakage.

[0005] The leak-proof joint structure provided in this application adopts the following technical solution:

[0006] A leak-proof fitting structure includes a stainless steel pipe and a groove formed by pressing at both ends of the stainless steel pipe surface. External threaded inner liner is inserted into both sides of the stainless steel pipe surface. The two ends of the two external threaded inner liner are spliced ​​into a circle. Both external threaded inner liner are engaged and limited by protrusions with the groove.

[0007] One end of the stainless steel tube is movably fitted with a movable nut and a clamping claw that holds the stainless steel tube in place, from left to right. The end of the movable nut is fixed to one end of the clamping claw, and the outer circumferential threads of the two external threaded liners are fixed with fastening nuts that abut and squeeze the clamping claw.

[0008] By adopting the above technical solution, the movable nut is firmly fixed to the stainless steel pipe through the external thread liner, so that the two form a whole; in this way, when the stainless steel pipe is angularly or positionally offset, the joint seal will not shake or loosen, and there will be no water leakage.

[0009] Preferably, the inner side of one end of the fastening nut is provided with a bevel, and when the fastening nut is connected to the two external threaded inner liner in place, the bevel does not correspond to the external threaded inner liner.

[0010] By adopting the above technical solution, the inclined surface can make the cleaver position secure the inside of the nut, and at the same time, the cleaver can exert force in two directions, thereby achieving fastening and fixing of the stainless steel pipe.

[0011] Preferably, the end of the chuck located at the fastening nut is chamfered, and the surface of the chuck that contacts the inclined surface is set with an arc angle.

[0012] By adopting the above technical solution, the setting of the arc angle can reduce the friction between the angle and the inclined plane, and at the same time, it can push the chuck to move.

[0013] Preferably, the surface of the claw is provided with a plurality of deformation grooves evenly spaced around it.

[0014] By adopting the above technical solution, when the jaws deform and come together, the distance between the deformation grooves will become smaller, thereby enabling the jaws to firmly hold the stainless steel pipe.

[0015] Preferably, the two external thread liners face the stainless steel tube side and are fixed to the protrusion in a position opposite to the pressure groove, with the protrusion inserted into the pressure groove.

[0016] By adopting the above technical solution, the protrusion is inserted into the pressure groove and limited by the pressure groove, thereby fixing the fastening nut to the stainless steel tube.

[0017] Preferably, the size of the protrusion is adapted to the size of the groove.

[0018] By adopting the above technical solution, the protrusion and the groove can be matched to achieve the effect of limiting and fixing.

[0019] Preferably, the end of the stainless steel tube away from the fastening nut is provided as a flange, which is located inside the movable nut and abuts against one end of the movable nut to achieve limiting.

[0020] By adopting the above technical solution, the flange setting can limit the movement of the movable nut and prevent it from separating from the stainless steel tube.

[0021] Preferably, a sealing gasket is inserted inside the movable nut to abut against the flange and achieve a seal, and an external threaded connector is fixed to the internal thread of the movable nut, with one end of the external threaded connector abutting against the sealing gasket to achieve a seal.

[0022] By adopting the above technical solution, the flange and the sealing gasket are brought into contact to achieve a seal and prevent water leakage.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. By using the movable nut to push the clamping jaws, a force is generated in two directions, which firmly fixes the movable nut to the stainless steel pipe, making the two form a whole; in this way, when the stainless steel pipe is angular or positionally offset, the joint seal will not shake or loosen, and there will be no water leakage. Attached Figure Description

[0025] Figure 1 This is a schematic cross-sectional view of the entire application;

[0026] Figure 2 This is an overall exploded view of this application.

[0027] Reference numerals: 1. External threaded connector; 2. Adjustable nut; 3. Fastening nut; 4. Claw; 5. Bevel; 6. Sealing gasket; 7. Stainless steel tube; 8. Flanged edge; 9. External threaded liner; 10. Protrusion; 11. Groove. Detailed Implementation

[0028] The following is in conjunction with the appendix Figures 1-2 This application will be described in further detail.

[0029] This application discloses a live joint structure to prevent water leakage.

[0030] Reference Figure 1 , Figure 2 A leak-proof joint structure includes a stainless steel pipe 7 and grooves 11 formed by pressing at both ends of the surface of the stainless steel pipe 7. The two sides of the grooves 11 are arc-shaped and the bottom is flat. The depth of the grooves 11 is 2-4mm. The two sides of the surface of the stainless steel pipe 7 are movably inserted into two external threaded inner liners 9. The two ends of the two external threaded inner liners 9 are spliced ​​into a circle. The outer side of the two external threaded inner liners 9 is provided with external threads and the inner side is set as a smooth surface. When the two external threaded inner liners 9 are spliced, their external threads are also perfectly spliced. The side of the two external threaded inner liners 9 facing the stainless steel pipe 7 is fixed to one end of a protrusion 10. The protrusion 10 corresponds to the groove 11 and is inserted into the groove 11. The top surface of the protrusion 10 is set as a flat surface. When inserted, the top surface of the protrusion 10 abuts against the bottom of the groove 11. The size of the protrusion 10 and the size of the groove 11 are adapted to each other. Each surface of the groove 11 contacts each surface of the protrusion 10, thereby reducing the splicing gap.

[0031] Two grooves 11 need to be pressed into the surface of the stainless steel tube 7 using a professional tool. Then, the movable nut 2 and the fastening nut 3 are respectively put on the surface of the stainless steel tube 7, and the claw 4 is put on the surface of the stainless steel tube 7. Then, the movable nut 2 is slid to one end of the stainless steel tube 7. Then, the two external threaded inner liners 9 are installed on the surface of the stainless steel tube 7 and the protrusion 10 is inserted into the groove 11, so that the two external threaded inner liners 9 are spliced ​​into a circle, so that the fastening nut 3 can be threadedly connected to the two external threaded inner liners 9 and rotated, so that the inclined surface 5 of the fastening nut 3 abuts against one end of the claw 4.

[0032] Reference Figure 1 , Figure 2One end of the stainless steel tube 7 is movably fitted with a movable nut 2 and a clamping claw 4 that holds the stainless steel tube 7 in place, from left to right. The surface of the clamping claw 4 is evenly distributed with several deformation grooves, which allows the clamping claw 4 to move towards its own axis. The end of the movable nut 2 is fixed to one end of the clamping claw 4. The inner wall of the clamping claw 4 is in contact with the surface of the stainless steel tube 7. The outer circumferential threads of the two external threaded inner liners 9 are fixed with fastening nuts 3. The fastening nuts 3 press against and squeeze the clamping claw 4. The inner side of one end of the fastening nut 3 is provided with a bevel 5. The inclination angle of the bevel 5 is set to 5-30 degrees. When the fastening nut 3 is threadedly connected to the two external threaded inner liners 9, the bevel 5 does not correspond to the external threaded inner liners 9. The end of the clamping claw 4 located at one end of the fastening nut 3 is provided with a chamfer, and the surface of one end of the clamping claw 4 that contacts the bevel 5 is set with an arc angle.

[0033] The inclined surface 5 where the fastening nut 3 contacts the movable nut 2 generates two forces during the tightening process: one force pushes the movable nut 2 to the left, causing it to fit against the flange 8 of the stainless steel pipe 7, reducing wobbling; the other force causes the clamp 4 to move towards the center, locking the stainless steel pipe 7 in place, further reducing wobbling. Furthermore, during the tightening process of the fastening nut 3, due to the interaction of forces, the movable nut 2, the external thread liner 9, and the stainless steel pipe 7 will also tighten accordingly. This forms a fixed section of the pipeline rather than a single point, greatly enhancing the reliability of the fastening and preventing wobbling between the joint and the stainless steel pipe 7, thus avoiding leakage.

[0034] Reference Figure 1 , Figure 2 The end of the stainless steel tube 7 away from the fastening nut 3 is set as a flange 8. The outer diameter of the flange 8 is smaller than the diameter of the internal thread inside the movable nut 2. The flange 8 is located inside the movable nut 2. One side of the flange 8 abuts against one end of the movable nut 2 to achieve a limit. The inner wall of the movable nut 2 at one end of the flange 8 contacts the outer wall of the stainless steel tube 7. A sealing gasket 6 is inserted inside the movable nut 2. One side of the sealing gasket 6 abuts against the surface of the flange 8 to achieve a seal. The internal thread of the movable nut 2 is threadedly fixed to the external thread of the external threaded connector 1, and one end of the external threaded connector 1 abuts against the sealing gasket 6 to achieve a seal.

[0035] Rotate the movable nut 2 with a wrench to move it on the surface of the external threaded connector 1 until the end of the external threaded connector 1 contacts the sealing gasket 6 and is squeezed to achieve a seal and prevent water leakage.

[0036] The implementation principle of the leak-proof joint structure in this application embodiment is as follows: the movable nut 2 is installed on the external threaded joint 1 using a tool, and then two external threaded inner liners 9 are installed on the stainless steel pipe 7. Then, the fastening nut 3 is threaded onto the two external threaded inner liners 9, and the fastening nut 3 is rotated and tightened using a tool. The fastening nut 3 contacts and squeezes the claw 4 through the inclined surface 5, and then fixes it.

[0037] The main function of this structure is to firmly fix the movable nut 2 to the stainless steel pipe 7, so that the two form a whole; in this way, when the stainless steel pipe 7 is offset by an angle or position, the joint seal will not shake or loosen, and there will be no water leakage.

[0038] The above are merely optional embodiments of this disclosure and are not intended to limit this disclosure. Various modifications and variations can be made to this disclosure by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A leak-proof joint structure, characterized in that: It includes a stainless steel pipe (7) and a groove (11) formed by extrusion at both ends of the surface of the stainless steel pipe (7). Both sides of the surface of the stainless steel pipe (7) are inserted with external thread liner (9). The two ends of the two external thread liner (9) are spliced ​​into a circle. The two external thread liner (9) are locked and limited by the protrusion (10) and the groove (11). One end of the stainless steel tube (7) is movably fitted with a movable nut (2) and a clamp (4) that holds the stainless steel tube (7) in place from left to right. The end of the movable nut (2) is fixed to one end of the clamp (4). The outer circumferential threads of the two external thread liners (9) are fixed with fastening nuts (3) that abut and squeeze the clamp (4).

2. The leak-proof joint structure according to claim 1, characterized in that: The inner side of one end of the fastening nut (3) is provided with a bevel (5). When the fastening nut (3) is threaded into place with the two external thread liners (9), the bevel (5) does not correspond to the external thread liners (9).

3. The leak-proof joint structure according to claim 2, characterized in that: The end of the claw (4) located at one end of the fastening nut (3) is chamfered, and the surface of the claw (4) that contacts the inclined surface (5) is set as an arc angle.

4. The leak-proof joint structure according to claim 3, characterized in that: The surface of the claw (4) is equally divided into several deformation grooves.

5. The leak-proof joint structure according to claim 1, characterized in that: The two external thread liners (9) face the stainless steel tube (7) and are fixed to the protrusion (10) relative to the groove (11). The protrusion (10) can be inserted into the groove (11).

6. The leak-proof joint structure according to claim 5, characterized in that: The dimensions of the protrusion (10) are adapted to the dimensions of the groove (11).

7. The leak-proof joint structure according to claim 1, characterized in that: The end of the stainless steel tube (7) away from the fastening nut (3) is provided as a flange (8), which is located inside the movable nut (2) and abuts against one end of the movable nut (2) to achieve a limiting position.

8. The leak-proof joint structure according to claim 7, characterized in that: The movable nut (2) has a sealing gasket (6) inserted inside, which abuts against the flange (8) and achieves a seal. The movable nut (2) has an external thread connector (1) fixed inside, and one end of the external thread connector (1) abuts against the sealing gasket (6) to achieve a seal.

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