Four-way sealing joint for connecting liquid pipes

Abstract

The invention discloses a four-way sealing joint for connecting a liquid pipe, and relates to hydraulic pipeline connection, the four-way sealing joint comprises a four-way joint body, a joint pipe is arranged on the four-way joint body, a sealing connection mechanism is arranged on one side of the joint pipe, and the sealing connection mechanism is detachably connected with the joint pipe in a sealing mode. A liquid pipe body is fixed to the side, away from the four-way connector body, of the sealing connecting mechanism, the sealing connecting mechanism is arranged, an inserting part of the sealing connecting mechanism is inserted into a connector pipe of the four-way sealing connector, and then the sealing connecting mechanism is fastened through a fastening part of the sealing connecting mechanism. The liquid pipe has the beneficial effects that the liquid pipe body and the four-way sealing joint are convenient to disassemble and firm in fastening, and the sealing performance is good.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic pipeline connection, and in particular to a four-way sealing joint for connecting liquid pipes. Background Art

[0002] A four-way pipe joint is a pipe fitting used to connect pipes at the branch of a pipe. Existing pipe joints include one-way, two-way and three-way pipe joints, which are the most common types of pipe joints. However, in actual applications, due to the complexity of the pipeline, more pipes need to be connected, which is not limited to one-way, two-way and three-way pipe joints, but may also involve four-way pipe joints.

[0003] The connection between the existing four-way pipe joint and the liquid pipe is usually achieved by directly inserting the liquid pipe into the four-way pipe joint and then twisting it into a twist shape with a wire ring. This method has poor sealing performance and is not convenient for disassembly. Moreover, the wire is prone to rust over time, and loose fixation will also cause corrosion to the liquid pipe. Therefore, we propose a four-way sealing joint for connecting liquid pipes to solve the above problems. Summary of the invention

[0004] The invention provides a four-way sealing joint for connecting liquid pipes, which solves the technical problems of poor sealing performance and inconvenient disassembly of the current four-way sealing joint for connecting liquid pipes.

[0005] In order to solve the above technical problems, the present invention provides a four-way sealing joint for connecting liquid pipes, including a four-way joint body, a joint pipe is arranged on the four-way joint body, a sealing connection mechanism is arranged on one side of the joint pipe, the sealing connection mechanism is detachably sealed and connected to the joint pipe, and the liquid pipe body is fixed to the side of the sealing connection mechanism away from the four-way joint body.

[0006] Preferably, the sealing connection mechanism also includes a plug-in component that is inserted into the joint pipe and sealed with the joint pipe, and a fastening component that fixes the plug-in component in the four-way joint body, the fastening component and the joint pipe are threadedly connected, and the fastening component and the plug-in component are sealed.

[0007] The above technical solution is adopted: the sealing connection mechanism also includes a plug-in component that is inserted into the joint pipe and sealed with the joint pipe, and a fastening component that fixes the plug-in component in the four-way joint body. The fastening component and the joint pipe are threadedly connected, and the fastening component and the plug-in component are sealed. The fastening component prevents the plug-in component from being inserted into the joint pipe and the plug-in component from falling off the joint pipe. In addition, the fastening component and the joint pipe are threadedly connected, which facilitates the separation of the liquid pipe body and the four-way sealed joint by threaded disassembly.

[0008] Preferably, the plug-in component comprises an extension tube, the outer diameter of the extension tube is the same as the inner diameter of the joint tube, one end of the extension tube is fixedly connected to a plug-in tube, and one end of the plug-in tube away from the extension tube is fixedly connected to a liquid tube body.

[0009] The above technical solution is adopted: the plug-in component includes an extension tube, the outer ring diameter of the extension tube is the same as the inner ring diameter of the joint tube, the extension tube extends to the inside of the joint tube, the outer wall of the extension tube coincides with the inner wall of the joint tube, thereby improving the sealing performance; one end of the extension tube is fixedly connected to a plug-in tube, and the plug-in tube is used to be plugged into the plug-in groove so that the annular stop shoulder stops the first sealing gasket in the plug-in groove, thereby further improving the sealing performance; the end of the plug-in tube away from the extension tube is fixedly connected to the liquid tube body.

[0010] Preferably, the fastening component comprises a hexagonal fastening plate, a second thread is formed in the hexagonal fastening plate, and a second stop ring plate is fixed to a side of the hexagonal fastening plate away from the second thread.

[0011] The above technical solution is adopted: the fastening component includes a hexagonal fastening plate, the design of the hexagonal plate is convenient for later tightening with a wrench, a second thread is opened in the hexagonal fastening plate, the second thread is matched with the first thread on the joint pipe, so that a detachable threaded connection is formed between the fastening component and the joint pipe, and a second stop ring plate is fixed on the side of the hexagonal fastening plate away from the second thread. When the hexagonal fastening plate is tightened, the second stop ring plate can stop the third sealing gasket to squeeze the first stop ring plate, so that a sealed connection is formed between the fastening component and the plug-in component, thereby further improving the sealing performance.

[0012] Preferably, a quick-connect end is provided at one end of the extension tube.

[0013] By adopting the above technical solution: a quick-insert end is provided at one end of the extension tube, and the design of the quick-insert end makes it faster to insert the plug-in component into the joint tube.

[0014] Preferably, an annular stop shoulder is provided at the connection between the extension tube and the plug tube.

[0015] The above technical solution is adopted: by providing an annular stop shoulder at the connection between the extension tube and the plug-in tube, when the plug-in tube is fully inserted into the plug-in groove in the joint tube, the annular stop shoulder stops the first sealing gasket at the bottom of the plug-in groove to form a seal.

[0016] Preferably, a first stop ring plate is fixed on the plug-in tube.

[0017] The above technical solution is adopted: a first stop ring plate is fixed on the plug-in tube. When the fastening component is tightened, the fastening component pushes the first stop ring plate to squeeze the second sealing pad on the joint pipe, so that a secondary seal is formed between the joint pipe and the plug-in component.

[0018] Preferably, an accommodating portion is provided between the second thread and the second stop ring plate.

[0019] The above technical solution is adopted: an accommodating portion is provided between the second thread and the second stop ring plate, and the accommodating portion is used to accommodate the second sealing gasket, the first stop ring plate and the third sealing gasket after the fastening component fastens the plug-in component.

[0020] Preferably, a second sealing gasket and a third sealing gasket are provided on the plug-in tube, and the second sealing gasket and the third sealing gasket are respectively arranged on both sides of the first stop ring plate, and the second sealing gasket and the third sealing gasket are both ring-shaped.

[0021] The above technical solution is adopted: a second sealing gasket and a third sealing gasket are provided on the plug-in tube, the second sealing gasket and the third sealing gasket are respectively arranged on both sides of the first stop ring plate, and the second sealing gasket and the third sealing gasket are both ring-shaped, thereby further improving the sealing performance.

[0022] Preferably, a first thread is provided on one end of the joint pipe close to the plug-in component, a plug-in groove is provided inwardly on one end of the joint pipe close to the plug-in component, and a first sealing gasket is arranged in the plug-in groove.

[0023] The above technical solution is adopted: a first thread is opened on one end of the joint pipe close to the plug-in component, and a plug-in groove is opened inwardly on one end of the joint pipe close to the plug-in component, and a first sealing gasket is arranged in the plug-in groove. When the plug-in pipe is plugged into the plug-in groove, the annular stop shoulder on the plug-in pipe stops the first sealing gasket at the bottom of the plug-in groove to form a first sealing structure.

[0024] Compared with the related art, the present invention has the following beneficial effects: 1. Compared with the traditional four-way sealing joint, the present invention is provided with a sealing connection mechanism, a sealing connection mechanism is provided on one side of the joint pipe, the sealing connection mechanism and the joint pipe are detachably sealed, a liquid pipe body is fixed on the side of the sealing connection mechanism away from the four-way joint body, the plug-in component of the sealing connection mechanism is plugged into the joint pipe of the four-way sealing joint, and then it is fastened by the fastening component of the sealing connection mechanism, during the fastening process of the fastening component, the plug-in component abuts the first sealing gasket, so that a first sealing structure is formed between the joint pipe and the plug-in component, secondly, the first abutting ring plate abuts the second sealing gasket, so that a second sealing structure is formed between the joint pipe and the plug-in component, and finally the fastening component abuts the third sealing gasket on the first abutting ring plate, so that a sealing structure is also formed between the plug-in component and the fastening component. Therefore, the beneficial effects of the present invention make it easy to disassemble the liquid pipe body and the four-way sealing joint, firmly fasten, and have good sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a four-way sealing joint for connecting liquid pipes; Figure 2 A schematic structural diagram of a four-way sealing joint for connecting liquid pipes from another perspective; Figure 3 A disassembled diagram of a sealing connection mechanism in a four-way sealing joint for connecting liquid pipes; Figure 4 It is a partial cross-sectional view of a four-way joint body in a four-way sealing joint for connecting liquid pipes; Figure 5 A cross-sectional view of a plug-in component and a fastening component in a sealing connection mechanism of a four-way sealing joint for connecting liquid pipes; Figure 6 A schematic diagram of the connection between a sealing connection mechanism and a joint pipe in a four-way sealing joint for connecting a liquid pipe; Figure 7 It is an enlarged view of the connection between the sealing connection mechanism and the joint pipe in a four-way sealing joint for connecting liquid pipes; Figure 8 This is a structural diagram of embodiment 3.

[0026] Numbers in the figure: 1. four-way joint body; 11. joint pipe; 12. first thread; 13. plug-in groove; 2. plug-in component; 21. extension tube; 22. quick-connect end; 23. plug-in tube; 24. annular stop shoulder; 25. first stop ring plate; 3. first sealing gasket; 4. second sealing gasket; 5. third sealing gasket; 6. fastening component; 61. hexagonal fastening plate; 62. second thread; 63. accommodating portion; 64. second stop ring plate; 7. liquid tube body; 8. sealing connection mechanism. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0028] Embodiment 1

[0029] like Figure 1-Figure 7 As shown, a four-way sealing joint for connecting liquid pipes comprises a four-way joint body 1, a joint pipe 11 is arranged on the four-way joint body 1, a sealing connection mechanism 8 is arranged on one side of the joint pipe 11, the sealing connection mechanism 8 is detachably sealedly connected to the joint pipe 11, and a liquid pipe body 7 is fixed to the side of the sealing connection mechanism 8 away from the four-way joint body 1; The plug-in component 2 of the sealing connection mechanism 8 is plugged into the joint pipe 11 of the four-way sealing joint, and then it is fastened by the fastening component 6 of the sealing connection mechanism 8. During the fastening process of the fastening component 6, the plug-in component 2 abuts the first sealing gasket 3, so that a first sealing structure is formed between the joint pipe 11 and the plug-in component 2. Secondly, the first abutting ring plate 25 abuts the second sealing gasket 4, so that a second sealing structure is formed between the joint pipe 11 and the plug-in component 2. Finally, the fastening component 6 abuts the third sealing gasket 5 on the first abutting ring plate 25, so that a sealing structure is also formed between the plug-in component 2 and the fastening component 6. Therefore, the beneficial effects of the present invention make it easy to disassemble the liquid pipe body 7 and the four-way sealing joint, firmly fastened, and have good sealing performance.

[0030] In this embodiment, the detachable sealing connection mode of the sealing connection mechanism is a threaded sealing connection.

[0031] For example, a detachable sealing connection is also known as a flange sealing connection, in which a first flange is fixed on the joint pipe 11, and a second flange is fixed at one end of the liquid pipe body 7, a sealing gasket adapted to the flange is arranged between the first flange and the second flange, and the first flange and the second flange are fastened by fastening bolts to achieve a sealed connection and disassembly between the liquid pipe body 7 and the joint pipe 11.

[0032] For example, a detachable sealed connection is also known as a socket-type sealed connection, in which a component is fixed on the joint pipe 11, a component socket is fixed on the liquid pipe body 7, and a sealing gasket is arranged at the connection between the liquid pipe body 7 and the joint pipe 11. After the pipe body 7 and the joint pipe 11 are sealed and connected, the component is inserted into the component socket to realize the sealed connection and disassembly between the pipe body 7 and the joint pipe 11.

[0033] Embodiment 2

[0034] like Figure 1-Figure 7As shown, the sealing connection mechanism 8 also includes a plug-in component 2 plugged into the joint pipe 11 and sealed with the joint pipe 11 and a fastening component 6 fixing the plug-in component 2 in the four-way joint body 1, the fastening component 6 and the joint pipe 11 are threadedly connected, the fastening component 6 and the plug-in component 2 are sealed, the plug-in component 2 includes an extension tube 21, the outer ring diameter of the extension tube 21 is the same as the inner ring diameter of the joint pipe 11, one end of the extension tube 21 is fixedly connected with a plug-in tube 23, and the end of the plug-in tube 23 away from the extension tube 21 is fixedly connected with the liquid pipe body 7, the fastening component 6 includes a hexagonal fastening plate 61, a second thread 62 is provided in the hexagonal fastening plate 61, a second stop ring plate 64 is fixed to the side of the hexagonal fastening plate 61 away from the second thread 62, and the hexagonal fastening plate 61 is fixed with a second stop ring plate 64. The fixing plate 61 and the second stop ring plate 64 are connected by threads, a quick plug end 22 is provided at one end of the extension tube 21, an annular stop shoulder 24 is provided at the connection between the extension tube 21 and the plug-in tube 23, a first stop ring plate 25 is fixed on the plug-in tube 23, an accommodating portion 63 is provided between the second thread 62 and the second stop ring plate 64, a second sealing gasket 4 and a third sealing gasket 5 are sleeved on the plug-in tube 23, the second sealing gasket 4 and the third sealing gasket 5 are respectively provided on both sides of the first stop ring plate 25, and the second sealing gasket 4 and the third sealing gasket 5 are both annular, a first thread 12 is provided on one end of the joint pipe 11 close to the plug-in component 2, a plug-in groove 13 is provided inwardly on one end of the joint pipe 11 close to the plug-in component 2, and a first sealing gasket 3 is provided in the plug-in groove 13; The fastening component 6 prevents the plug-in component 2 from being inserted into the joint pipe 11 and the plug-in component 2 from falling out of the joint pipe 11. In addition, the fastening component 6 and the joint pipe 11 are threadedly connected, which facilitates the separation of the liquid pipe body 7 and the four-way sealing joint by thread disassembly. The extension tube 21 extends to the inside of the joint tube 11, and the outer wall of the extension tube 21 matches the inner wall of the joint tube 11 to improve the sealing performance. One end of the extension tube 21 is fixedly connected to a plug-in tube 23, and the plug-in tube 23 is used to be plugged into the plug-in groove 13, so that the annular stop shoulder 24 stops the first sealing gasket 3 in the plug-in groove 13, further improving the sealing performance. The end of the plug-in tube 23 away from the extension tube 21 is fixedly connected to the liquid tube body 7; The design of the hexagonal plate is convenient for later tightening with a wrench. A second thread 62 is provided in the hexagonal fastening plate 61. The second thread 62 matches the first thread 12 on the joint pipe 11, so that a detachable threaded connection is formed between the fastening component 6 and the joint pipe 11. A second stop ring plate 64 is fixed to the side of the hexagonal fastening plate 61 away from the second thread 62. When the hexagonal fastening plate 61 is tightened, the second stop ring plate 64 can stop the third sealing gasket 5 to squeeze the first stop ring plate 25, so that a sealed connection is formed between the fastening component 6 and the plug-in component 2, thereby further improving the sealing performance. A first stop ring plate 25 is fixed to the plug-in tube 23 . When the fastening component 6 is fastened, the fastening component 6 pushes the first stop ring plate 25 to squeeze the second sealing gasket 4 onto the joint tube 11 , so that a secondary seal is formed between the joint tube 11 and the plug-in component 2 .

[0035] Working principle: Figure 1-7 As shown, the extension tube 21 in the plug-in component 2 is plugged into the joint tube 11, and the extension tube 21 fits with the inner wall of the joint tube 11 to form a primary sealing structure. When the plug-in tube 23 is plugged into the plug-in groove 13, the annular stop shoulder 24 stops the first sealing gasket 3 at the bottom of the plug-in groove 13, so that a first sealing structure is formed between the joint tube 11 and the plug-in component 2, and then the fastening component 6 is tightened. During the process of threading the fastening component 6 on the joint tube 11, the hexagonal fastening plate 61 will push the first stop ring plate 25 to continue to move forward. The ring plate 25 is fixed on the plug-in tube 23, so the forward movement of the first stop ring plate 25 will stop the second sealing gasket 4 from squeezing the joint tube 11, so that a second sealing structure is formed between the joint tube 11 and the plug-in component 2, and at the same time, the second stop ring plate 64 will stop the third sealing gasket 5 from squeezing the first stop ring plate 25, so that a sealing structure is formed again between the fastening component 6 and the plug-in component 2. Therefore, compared with the traditional four-way sealing joint body and the liquid pipe body 7, the sealing is better, and it is easy to disassemble and install, while making the liquid pipe body 7 and the four-way pipe joint body firmly fastened.

[0036] Embodiment 3

[0037] like Figure 8 As shown, the second stop ring plate 64 includes a first wedge ring portion 640 and a second wedge ring portion 641. The first wedge ring portion 640 is in a circular ring shape, and the second wedge ring portion 641 is in a C shape and has a certain elasticity, for example, made of elastic metal. The first wedge ring portion 640 is driven by the axial force during assembly to radially expand the second wedge ring portion 641, and when at least part of the second wedge ring portion 641 extends into the accommodating portion 63 and abuts against the inner wall of the accommodating portion 63, the joint of this embodiment is assembled in place due to the constraint of the fastening component 6, avoiding excessive axial locking and causing extrusion damage to the second sealing gasket 4 and the third sealing gasket 5. The second sealing gasket 4 is, for example, a metal sealing gasket, and the third sealing gasket 5 is, for example, a metal sealing gasket. Of course, one of them can also be selected from rubber materials.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A four-way sealing joint for connecting liquid pipes, comprising a four-way joint body (1), characterized in that: A joint pipe (11) is provided on the four-way joint body (1), and a sealing connection mechanism (8) is provided on one side of the joint pipe (11). The sealing connection mechanism (8) is detachably sealedly connected to the joint pipe (11), and a liquid pipe body (7) is fixed to the side of the sealing connection mechanism (8) away from the four-way joint body (1).

2. A four-way sealing joint for connecting liquid pipes according to claim 1, characterized in that: The sealing connection mechanism (8) further comprises a plug-in component (2) plugged into the joint pipe (11) and sealingly connected to the joint pipe (11), and a fastening component (6) fixing the plug-in component (2) in the four-way joint body (1), wherein the fastening component (6) and the joint pipe (11) are threadedly connected, and the fastening component (6) and the plug-in component (2) are sealingly connected.

3. A four-way sealing joint for connecting liquid pipes according to claim 2, characterized in that: The plug-in component (2) comprises an extension tube (21), the outer diameter of the extension tube (21) being the same as the inner diameter of the joint tube (11), one end of the extension tube (21) being fixedly connected to a plug-in tube (23), and one end of the plug-in tube (23) being away from the extension tube (21) being fixedly connected to a liquid tube body (7).

4. A four-way sealing joint for connecting liquid pipes according to claim 2, characterized in that: The fastening component (6) comprises a hexagonal fastening plate (61), a second thread (62) is provided in the hexagonal fastening plate (61), and a second stop ring plate (64) is fixed to a side of the hexagonal fastening plate (61) away from the second thread (62).

5. A four-way sealing joint for connecting liquid pipes according to claim 3, characterized in that: A quick-insert end (22) is provided at one end of the extension tube (21).

6. A four-way sealing joint for connecting liquid pipes according to claim 3, characterized in that: An annular stop shoulder (24) is provided at the connection between the extension tube (21) and the insertion tube (23).

7. A four-way sealing joint for connecting liquid pipes according to claim 3, characterized in that: A first stop ring plate (25) is fixed on the plug-in tube (23).

8. A four-way sealing joint for connecting liquid pipes according to claim 4, characterized in that: An accommodating portion (63) is provided between the second thread (62) and the second stop ring plate (64).

9. A four-way sealing joint for connecting liquid pipes according to claim 3, characterized in that: The plug-in tube (23) is sleeved with a second sealing gasket (4) and a third sealing gasket (5); the second sealing gasket (4) and the third sealing gasket (5) are respectively arranged on both sides of the first stop ring plate (25); the second sealing gasket (4) and the third sealing gasket (5) are both ring-shaped.

10. A four-way sealing joint for connecting liquid pipes according to claim 9, characterized in that: A first thread (12) is provided on one end of the joint pipe (11) close to the plug-in component (2), and a plug-in groove (13) is provided inwardly on one end of the joint pipe (11) close to the plug-in component (2), wherein a first sealing gasket (3) is arranged in the plug-in groove (13).

Images