Leather hose movable joint

Abstract

The utility model relates to a leather hose movable joint which comprises a straight-through pipe fitting, the straight-through pipe fitting is provided with a first installation opening and a second installation opening, and the peripheral wall of the first installation opening is provided with a tooth-shaped densification unit used for improving the sealing performance of a pipeline. A pressing unit for pressing the pipeline is mounted on the outer circumferential wall of the first mounting opening, and the pressing unit right corresponds to the tooth-shaped densification unit; the second mounting opening is sleeved with a loose joint nut, a circle of mounting groove is formed in the end face of the second mounting opening, a sealing gasket is embedded through the mounting groove, and the sealing gasket is located on the inner side of the loose joint nut; the tooth-shaped densification unit and the pressing unit are arranged at the first mounting opening of the leather hose movable joint, and the movable joint nut is arranged at the second mounting opening, so that the leather hose movable joint has the advantages of being convenient to mount, good in sealing performance, stable and reliable.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of pipe fittings, especially relates to a skin pipe union. BACKGROUND

[0002] In the connection of two pipes, the pipes are usually connected by a joint, especially in a special environment, one of the two pipes is a skin pipe and the other is a metal pipe, in the connection process of the existing joint, the skin pipe is difficult to be connected in place with the other end of the joint after the metal pipe is connected with one end of the joint, and the installation is relatively inconvenient, there is also a risk of leakage, and after connection and fixation, the connection part may be detached, and the performance is not very stable and reliable. SUMMARY

[0003] The utility model aims at overcoming the defects of the prior art, and provides a skin pipe union which is convenient to install, has good sealing performance and is stable and reliable.

[0004] The utility model discloses a skin pipe union which comprises a straight-through pipe fitting, the straight-through pipe fitting is respectively provided with a first installation port and a second installation port, a toothed sealing unit for increasing the sealing performance of a pipeline is arranged on the outer circumferential wall of the first installation port, a pressing unit for pressing the pipeline is arranged on the outer circumferential wall of the first installation port, and the pressing unit corresponds to the toothed sealing unit, a union nut is sleeved on the second installation port, and the end face of the second installation port is provided with a ring-shaped installation groove, a sealing gasket is embedded in the installation groove, and the sealing gasket is located on the inner side of the union nut.

[0005] Compared with the prior art, the toothed sealing unit and the pressing unit are arranged on the first installation port of the skin pipe union, the union nut is arranged on the second installation port, in the installation and connection process of the skin pipe and the metal pipe, the first installation port is connected with the skin pipe first, then the metal pipe is installed, screwed and fixed through the union nut of the second installation port, and the skin pipe union has the advantages of convenient installation, good sealing performance and stability and reliability.

[0006] Preferably, a ring-shaped limiting protrusion is arranged on the outer circumferential wall of the second installation port, the union nut is put along the axial direction from the first installation port to the second installation port and abuts against the limiting protrusion, and the limiting protrusion prevents the union nut from being separated from the second installation port, and the installation is very convenient in the screwing process with the external thread of the metal pipe.

[0007] Preferably, the sealing gasket has a ring-shaped structure and abuts against the inner wall of the union nut, and the end face of the sealing gasket facing the pipe to be connected is an arc surface; the sealing gasket is configured in this way to improve the sealing performance, and the arc surface of the end face of the sealing gasket further enhances the sealing performance between the end face of the metal pipe and the sealing gasket.

[0008] Preferably, the toothed densification unit includes several rings of protrusions distributed along the axial direction of the straight pipe fitting. The protrusions are evenly spaced and have a cross-section with an inverted tooth shape. The above structure improves the sealing performance of the connection between the tubing and the first mounting port. The inverted tooth shape of the protrusions facilitates the connection between the tubing and the first mounting port, but makes it difficult to pull them out.

[0009] Preferably, the clamping unit includes a gasket and a stainless steel sleeve. The gasket is fixedly installed in a groove on the outer circumferential wall of the first mounting port. The groove is located at the rear end of the toothed densification unit. Both ends of the stainless steel sleeve are outwardly open, with one end embedded in the groove of the gasket and the other end facing the tubing to be inserted. By setting the clamping unit, after the tubing is inserted into the first mounting port, the stainless steel sleeve can be clamped with a special tool to reseal the tubing and the first mounting port. The outwardly open nature of both ends of the stainless steel sleeve facilitates not only the insertion of the stainless steel sleeve into the groove of the gasket but also the insertion of the stainless steel sleeve into the tubing.

[0010] Preferably, the inner wall of the opening groove of the gasket is an inclined structure with an increasing diameter along the opening; the above-mentioned opening groove structure makes the stability of the stainless steel sleeve and the gasket better after they are embedded.

[0011] Preferably, the stainless steel sleeve has two symmetrically distributed observation holes on its sleeve wall; by setting the observation holes, it is possible to observe in a timely manner whether the insertion between the tubing and the first installation port is in place. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the main cross-sectional structure of the hose fitting of this utility model.

[0013] Figure 2 yes Figure 1 A magnified structural diagram at point A.

[0014] The labels in the attached diagram are as follows: 1. Straight pipe fitting; 2. First mounting port; 3. Second mounting port; 4. Union nut; 5. Toothed densification unit; 6. Clamping unit; 7. Sealing gasket; 21. Embedded groove; 31. Mounting groove; 32. Limiting protrusion; 51. Protrusion; 61. Gasket; 62. Stainless steel sleeve; 63. Opening groove; 64. Inspection hole; 71. Curved surface. Detailed Implementation

[0015] The present invention will now be described in detail with reference to the accompanying drawings: as shown in the drawings Figure 1 , 2 As shown, this utility model includes a straight pipe fitting 1, which is provided with a first mounting port 2 and a second mounting port 3. The outer peripheral wall of the first mounting port 2 is provided with a toothed densifying unit 5 for increasing the sealing performance of the pipeline. A clamping unit 6 for pressing the pipeline is installed on the outer peripheral wall of the first mounting port 2, and the clamping unit 6 corresponds to the toothed densifying unit 5. A union nut 4 is sleeved on the second mounting port 3, and a mounting groove 31 is provided on the end face of the second mounting port 3. A sealing gasket 7 is embedded in the mounting groove 31, and the sealing gasket 7 is located inside the union nut 4.

[0016] A limiting protrusion 32 is provided on the outer peripheral wall of the second mounting port 3. The union nut 4 is inserted along the axial direction from the first mounting port 2 to the second mounting port 3 and abuts against the limiting protrusion 32.

[0017] The sealing gasket 7 has a ring-shaped structure and abuts against the inner wall of the union nut 4, and the end face of the sealing gasket 7 facing the pipe fitting to be connected is an arc surface 71.

[0018] The toothed densification unit 5 includes several rings of protrusions 51 distributed along the axial direction of the straight pipe fitting. The protrusions 51 are evenly spaced and have an inverted tooth-shaped cross-section.

[0019] The clamping unit 6 includes a gasket 61 and a stainless steel sleeve 62. The gasket 61 is installed and fixed in a ring of embedded grooves 21 provided on the outer peripheral wall of the first mounting port 2. The embedded grooves 21 are located at the rear end of the toothed densification unit 5. Both ends of the stainless steel sleeve 62 are outwardly open, with one end embedded in the opening groove 63 provided on the gasket 61 and the other end facing the tubing to be inserted.

[0020] The inner wall of the opening groove 63 of the gasket 61 has an inclined structure with an increasing diameter along the groove opening.

[0021] The stainless steel sleeve 62 has two symmetrically distributed observation holes 64 on its sleeve wall.

[0022] The working principle of the utility model is: firstly, the loose joint nut 4 is put into along the axial direction of the first installation port 2 to the second installation port 3, and abuts against the limiting protrusion 32, and after installation, the pressing unit 6 is installed, then, the skin pipe is inserted and fixed on the toothed densification unit 5 of the first installation port 2 of the straight-through pipe fitting 1, and whether the skin pipe is inserted in place is observed through the observation hole 64, that is, whether the one end of the skin pipe abuts against the gasket 61, if abutting, the stainless steel sleeve 62 realizes the pressing between the skin pipe and the first installation port 2 through special tools, finally, the loose joint nut 4 on the second installation port 3 and the outer thread of the metal pipe are fixed through the screwing mode.

[0023] The above is only the specific embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A field joint for a skin pipe, comprising a through pipe piece (1), characterized in that: The straight-through pipe fitting (1) is respectively provided with a first mounting port (2) and a second mounting port (3), a tooth-shaped sealing unit (5) for increasing the sealing performance of the pipeline is arranged on the outer circumferential wall of the first mounting port (2), a pressing unit (6) for pressing the pipeline is arranged on the outer circumferential wall of the first mounting port (2), and the pressing unit (6) corresponds to the tooth-shaped sealing unit (5); the second mounting port (3) is sleeved with an adapter nut (4), and an end surface of the second mounting port (3) is provided with a mounting groove (31), a sealing gasket (7) is embedded in the mounting groove (31), and the sealing gasket (7) is located on the inner side of the adapter nut (4).

2. The field joint of claim 1, wherein: A limiting protrusion (32) is arranged on the outer circumferential wall of the second mounting port (3), the adapter nut (4) is placed along the axial direction of the first mounting port (2) to the second mounting port (3), and abuts against the limiting protrusion (32).

3. The field tube adapter of claim 1, wherein: The sealing gasket (7) is annular in shape and abuts against the inner wall of the adapter nut (4), and the end surface of the sealing gasket (7) facing the direction of the pipe fitting to be connected is an arc surface (71).

4. The field tube adapter of claim 1, wherein: The tooth-shaped sealing unit (5) comprises a plurality of protrusions (51) distributed along the axial direction of the straight-through pipe fitting (1), the protrusions (51) are distributed at equal intervals, and the cross section of the protrusion (51) is a reverse tooth-shaped structure.

5. The field tube adapter of claim 1, wherein: The pressing unit (6) comprises a gasket (61) and a stainless steel sleeve (62), the gasket (61) is fixedly arranged in an embedded groove (21) arranged on the outer circumferential wall of the first mounting port (2), the embedded groove (21) is located at the rear end of the tooth-shaped sealing unit (5), the two ends of the stainless steel sleeve (62) are outwardly opened, one end of the stainless steel sleeve (62) is embedded in an opening groove (63) arranged in the gasket (61), and the other end faces the rubber pipe fitting to be connected.

6. The field tube adapter of claim 5, wherein: The inner wall of the opening groove (63) of the gasket (61) is inclined and expands in diameter inwardly from the groove opening.

7. The field tube adapter of claim 5, wherein: Two observation holes (64) are symmetrically arranged on the sleeve wall of the stainless steel sleeve (62).

Images