Improved lining joint

Abstract

The utility model discloses an improved lining joint which comprises a connecting sleeve and a lining joint body arranged at the two ends of the connecting sleeve, a first sealing ring and a third sealing ring are arranged on the outer portion of the lining joint body from left to right, and two locking sleeves are connected to the outer portion of the connecting sleeve in a threaded mode. Positioning columns are further symmetrically arranged on the outer side of the connecting sleeve, and a second sealing ring is arranged on the outer side of the connecting sleeve and located outside the positioning columns. The utility model relates to the technical field of lining joints. According to the improved lining connector, the first external thread on the outer portion of the lining connector body is screwed with the first internal thread on the inner side of the connecting sleeve, so that threaded connection of the lining connector body and the connecting sleeve can be achieved, and the first sealing ring and the third sealing ring are arranged on the outer portion of the lining connector body; further, the sealing performance of the lining joint main body can be improved; positioning columns symmetrically arranged on the two sides of the connecting sleeve can achieve positioning installation of the lining connector body.

Description

Technical Field

[0001] The utility model relates to the technical field of liner joints, in particular to an improved liner joint. Background Art

[0002] Lined joints, especially lined polytetrafluororubber joints, are hollow rubber products used for flexible connections between metal pipes. They are often used to connect pumps and valves, and are particularly suitable for pipelines with large vibrations and frequent hot and cold changes. Lined joints are widely used in pipeline systems due to their excellent corrosion resistance, high temperature resistance, vacuum resistance and good physical properties.

[0003] A Chinese patent discloses an improved connector (authorization announcement number CN216520125U). The patented technology uses a fastening ring to fasten the exhaust duct and the connector, and the exhaust duct is connected in an embedded manner. After the connection, the exhaust duct and the connector can be connected more tightly and not easy to loosen.

[0004] However, most of the existing joints are installed in an embedded manner. Since there is no sealing mechanism on the outside after installation, the sealing performance is poor, which affects the use of the joint. For example, the above-mentioned reference document adopts an embedded installation method. In actual application, when there is no sealing mechanism on the outside after installation, the sealing performance is poor, which affects the normal use of the joint. Therefore, those skilled in the art provide an improved liner joint to solve the problems raised in the above-mentioned background technology. Utility Model Content

[0005] In view of the deficiencies of the prior art, the utility model provides an improved liner joint, which solves the problem that after the prior joint is installed, there is no sealing mechanism on the outside thereof, which affects the normal use of the joint.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: an improved liner joint, including a connecting sleeve and a liner joint body arranged at both ends of the connecting sleeve, the outside of the liner joint body is respectively provided with a first sealing ring and a third sealing ring from left to right, the external thread of the connecting sleeve is connected to two locking sleeves, and the outer side of the connecting sleeve is also symmetrically provided with positioning columns, and the outer side of the connecting sleeve is provided with a second sealing ring on the outside of the positioning columns.

[0007] Preferably, the first sealing ring and the third sealing ring have the same thickness, and both the first sealing ring and the third sealing ring are made of rubber.

[0008] Preferably, the outside of the liner joint body is further provided with a first external thread, and the inside of the connecting sleeve is provided with a first internal thread threadedly connected to the first external thread.

[0009] Preferably, four positioning posts are symmetrically arranged on both sides of the connecting sleeve, and all the positioning posts are cylindrical.

[0010] Preferably, the second sealing ring is also made of rubber, and the radius of the second sealing ring is the same as the radius of the connecting sleeve.

[0011] Preferably, the exterior of the connecting sleeve is provided with an external thread, and the interior of the locking sleeve is provided with an internal thread which is screwed together with the external thread.

[0012] Beneficial Effects

[0013] The utility model provides an improved liner joint. Compared with the prior art, it has the following beneficial effects:

[0014] 1. The improved liner joint realizes threaded connection between the liner joint body and the connecting sleeve by screwing together the first external thread on the outside of the liner joint body and the first internal thread on the inside of the connecting sleeve, and the sealing performance of the liner joint body can be improved by arranging the first sealing ring and the third sealing ring on the outside of the liner joint body.

[0015] 2. The improved liner joint can realize the positioning and installation of the liner joint body through the positioning columns symmetrically arranged on both sides of the connecting sleeve, and the sealing performance of the installation of the liner joint body can be improved by the second sealing ring. At the same time, a locking sleeve is connected to the external thread of the connecting sleeve, so that the positioning and installation of the liner joint body and the external joint can be realized, which has good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of an improved liner joint;

[0017] Figure 2 It is a schematic diagram of the structure of the second sealing ring in an improved liner joint;

[0018] Figure 3 The figure is a schematic diagram of the structure of the third sealing ring in an improved liner joint.

[0019] In the figure: 1. Lined joint body; 11. First external thread; 2. First sealing ring; 3. Connecting sleeve; 31. Positioning column; 32. First internal thread; 4. Second sealing ring; 5. Locking sleeve; 6. Third sealing ring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-3 The utility model provides a technical solution: an improved liner joint, comprising a connecting sleeve 3 and a liner joint body 1 arranged at both ends of the connecting sleeve 3, the outside of the liner joint body 1 is respectively provided with a first sealing ring 2 and a third sealing ring 6 from left to right, the external thread of the connecting sleeve 3 is connected to two locking sleeves 5, and the outer side of the connecting sleeve 3 is also symmetrically provided with positioning columns 31, and the outer side of the connecting sleeve 3 is provided with a second sealing ring 4 outside the positioning columns 31. This arrangement utilizes the first sealing ring 2 and the third sealing ring 6 outside the liner joint body 1 to improve the sealing performance of the connection of the liner joint body 1, and at the same time, the locking sleeve 5 can be used to realize the quick connection of the liner joint body 1 and the external joint.

[0022] exist Figure 3 Middle: The first sealing ring 2 and the third sealing ring 6 have the same thickness, and both are made of rubber material. This arrangement utilizes the first sealing ring 2 and the third sealing ring 6 to achieve sealing of the connection of the liner joint body 1.

[0023] exist Figure 1 and Figure 2 Middle: The outside of the liner joint body 1 is also provided with a first external thread 11, and the inner side of the connecting sleeve 3 is provided with a first internal thread 32 threadedly connected to the first external thread 11. This setting utilizes the mutual screwing of the first external thread 11 and the first internal thread 32 to achieve the connection between the liner joint body 1 and the connecting sleeve 3.

[0024] exist Figure 2 Middle: Four positioning columns 31 are symmetrically arranged on both sides of the connecting sleeve 3, and the positioning columns 31 are all cylindrical. This arrangement utilizes the positioning columns 31 to be compatible with the positioning holes opened on the outside of the external joint, thereby facilitating the positioning connection between the liner joint body 1 and the external joint.

[0025] exist Figure 2 Middle: The material of the second sealing ring 4 is also rubber, and the radius of the second sealing ring 4 is the same as the radius of the connecting sleeve 3. This arrangement utilizes the second sealing ring 4 to improve the sealing performance of the connection between the liner joint body 1 and the external joint.

[0026] exist Figure 2Middle: The outside of the connecting sleeve 3 is provided with an external thread, and the inner side of the locking sleeve 5 is provided with an internal thread that screws with the external thread. This setting utilizes the locking sleeve 5 to rotate on the external thread of the connecting sleeve 3, thereby achieving the purpose of quickly connecting the liner joint body 1 with the external joint.

[0027] When working (or in use), when the improved liner joint is in use, first the liner joint body 1 is screwed together through the first external thread 11 on the outside and the first internal thread 32 on the inner side of the connecting sleeve 3, thereby realizing the connection between the liner joint body 1 and the connecting sleeve 3, and after the connection, the external joint is sleeved on the outside of the liner joint body 1, that is, the radius of the external joint is the same as the outside of the connecting sleeve 3, and during installation, the positioning columns 31 on both sides of the connecting sleeve 3 will be embedded in the positioning holes opened on the outside of the external joint, thereby realizing the positioning and installation of the external joint and the liner joint body 1, and during the positioning and installation, the locking sleeve 5 on the outside of the connecting sleeve 3 is rotated on the outside of the connecting sleeve 3, thereby the locking sleeve 5 can be moved to the outside of the external joint to achieve the purpose of locking the external joint, and at the same time, a second sealing ring 4 is also provided on the outside of the connecting sleeve 3, so that the sealing of the connection can be improved by the second sealing ring 4, and a first sealing ring 2 and a third sealing ring 6 are respectively provided on the outside of the liner joint body 1 from left to right, so that the sealing of the liner joint body 1 can be improved, and the practicality is good.

[0028] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. An improved liner joint, comprising a connecting sleeve (3) and a liner joint body (1) arranged at both ends of the connecting sleeve (3), characterized in that: The outside of the liner joint body (1) is provided with a first sealing ring (2) and a third sealing ring (6) from left to right, respectively; the outside of the connecting sleeve (3) is threadedly connected to two locking sleeves (5), and the outside of the connecting sleeve (3) is symmetrically provided with positioning columns (31); the outside of the connecting sleeve (3) is provided with a second sealing ring (4) outside the positioning columns (31).

2. An improved liner joint according to claim 1, characterized in that: The first sealing ring (2) and the third sealing ring (6) have the same thickness, and both the first sealing ring (2) and the third sealing ring (6) are made of rubber material.

3. An improved liner joint according to claim 1, characterized in that: The outside of the liner joint body (1) is also provided with a first external thread (11), and the inside of the connecting sleeve (3) is provided with a first internal thread (32) threadably connected to the first external thread (11).

4. An improved liner joint according to claim 1, characterized in that: Four positioning posts (31) are symmetrically arranged on both sides of the connecting sleeve (3), and the positioning posts (31) are all cylindrical.

5. The improved liner joint according to claim 1, characterized in that: The material of the second sealing ring (4) is also rubber, and the radius of the second sealing ring (4) is the same as the radius of the connecting sleeve (3).

6. An improved liner joint according to claim 1, characterized in that: The outside of the connecting sleeve (3) is provided with an external thread, and the inside of the locking sleeve (5) is provided with an internal thread that is screwed together with the external thread.

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