Pipe fitting joint locking structure

Abstract

The invention provides a pipe fitting connector locking structure which comprises a fixing sleeve, limiting clamping rings are installed at the two ends of the fixing sleeve correspondingly, locking rails are installed on the two limiting clamping rings correspondingly, positioning grooves are formed in the two limiting clamping rings correspondingly, adjusting plates are installed in the positioning grooves, the locking rails are located on the rear sides of the adjusting plates, and the locking rails are located on the rear sides of the adjusting plates. A locking rail is installed on the rear side of the adjusting plate and located on the outer side of the positioning groove, a locking structure is installed on the rear side of the adjusting plate and located in the locking rail, a plurality of clamping plates are installed in the limiting clamping ring, adjusting pieces are installed on the clamping plates, and a sealing structure is installed in the fixing sleeve. The fixing sleeve has the following beneficial effects that the calibers of the two ends of the fixing sleeve can be conveniently adjusted according to the calibers of the pipe fitting connectors, and the adaptation degree between the fixing sleeve and the pipe fitting connectors is improved.

Description

Technical Field

[0001] The invention relates to a pipe joint locking structure, belonging to the field of pipe joint locking. Background Art

[0002] Pipe fittings are a general term for parts used for connection, control, direction change, flow diversion, sealing, support and other functions in pipeline systems. Pipe fittings are used for linear connections such as instruments, and the connection forms include socket welding or threaded connection. They are mainly used for small-diameter low-pressure pipelines, and are also used in parts that need to be frequently assembled and disassembled, or as the final adjustment of pipelines using threaded pipe fittings. During emergency repair of pipelines, it is necessary to splice and fix the pipe fittings at both ends. In the prior art, during emergency repair, affected by the repair environment and repair materials, in the process of splicing and fixing two sections of pipe fittings, it is encountered that the diameters of the two sections of pipe fittings that need to be connected are different, and a fixed sleeve is required to assist in splicing, but the diameters at both ends of the fixed sleeve are the same, and other tools are required to seal the gap at one end of the fixed sleeve, which reduces the efficiency of emergency repair. Therefore, it is necessary to design a pipe fitting joint locking structure with adjustable diameters at both ends of the fixed sleeve. Summary of the invention

[0003] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a pipe joint locking structure to solve the problems raised in the above-mentioned background technology. The present invention facilitates adjusting the caliber sizes of the two ends of the fixed sleeve according to the caliber of the pipe joint, thereby improving the fit between the fixed sleeve and the pipe joint.

[0004] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical scheme: a pipe joint locking structure, including a fixed sleeve, limit clamps are installed at both ends of the fixed sleeve, locking rails are installed on the two limit clamps, positioning grooves are opened on the two limit clamps, an adjustment plate is installed inside the positioning groove, the locking rail is located on the rear side of the adjustment plate, the locking rail is located on the outside of the positioning groove, a locking structure is installed on the rear side of the adjustment plate, the locking structure is located inside the locking rail, a plurality of clamping plates are installed inside the limit clamps, an adjusting member is installed on the clamping plate, and a sealing structure is installed inside the fixed sleeve.

[0005] Further, the locking structure includes a movable groove, a movable groove is opened inside the locking track, a limiting groove is opened on the side of the locking track close to the adjusting plate, the limiting groove is communicated with the inside of the movable groove, a through hole is opened on the adjusting plate, a round rod is installed on the side of the adjusting plate away from the locking track, an adjustment handle is installed on the side of the round rod away from the adjusting plate, a connecting rod is installed on the side of the round rod close to the adjusting plate, the connecting rod is inserted in the through hole, and an insertion rod is installed on the other end of the connecting rod, and the insertion rod is located inside the movable groove.

[0006] Furthermore, a connecting base is installed at the bottom of the insertion rod, and a limiting gasket is installed at the bottom of the connecting base. The bottom of the limiting gasket is in contact with the inner wall of the movable groove. A spring is sleeved on the outside of the insertion rod, and the top of the spring is connected to the inner wall of the movable groove. The diameter of the spring is larger than the width of the limiting groove, and the diameter of the insertion rod is larger than the width of the limiting groove.

[0007] Further, the adjusting member includes an adjusting ring, which is installed inside a limiting clamping ring, an adjusting plate is installed on the outer wall of the adjusting ring, a plurality of sliding grooves are provided on the side of the adjusting ring close to the fixed sleeve, a plurality of clamping plates are installed on the side of the adjusting ring close to the fixed sleeve, a limiting bottom plate is installed on the side of the clamping plate away from the adjusting ring, the limiting bottom plate is installed inside the limiting clamping ring, and a plurality of clamping grooves are provided on the side of the limiting bottom plate close to the clamping plate.

[0008] Furthermore, the plurality of clamping plates are distributed in a circular array, and a sliding block is installed on one side of the clamping plates close to the adjusting ring, and the sliding block is installed inside the slide groove. A clamping column is installed on one side of the clamping plate close to the limiting bottom plate, and the clamping column is located at the end of the clamping plate away from the sliding block, and the clamping column is inserted inside the clamping groove.

[0009] Furthermore, a groove is provided inside the limiting clamp ring, a gear is installed on the side of the adjusting ring close to the groove, a gear ring is installed on the inner wall of the groove, and the groove and the gear ring are meshed with each other.

[0010] Furthermore, the sealing structure includes a fixing clamp ring, which is installed inside the fixing sleeve, the outer diameter of the fixing clamp ring is the same as the inner diameter of the fixing sleeve, an installation opening is opened on the outer wall of the fixing sleeve, and a sealing ring is installed on the inner wall of the fixing clamp ring.

[0011] Furthermore, a connecting tube is installed above the fixed clamping ring, the connecting tube is inserted inside the mounting port, one end of the connecting tube is located outside the mounting port, a sealing cover is installed at the end of the connecting tube located outside the mounting port, an inflation port is opened on the connecting tube, the inflation port is communicated with the inside of the sealing ring, and the inflation port is located on the lower side of the connecting tube.

[0012] The beneficial effects of the present invention: a pipe joint locking structure of the present invention, by pulling the adjusting handle outward to make the round rod move away from the adjusting plate, the connecting rod drives the installing rod to approach the adjusting plate, thereby squeezing the spring to the side close to the adjusting plate, and the installing rod drives the limiting gasket to lift to release the restriction on the position of the adjusting plate, and drives the adjusting ring to rotate by moving the position of the adjusting plate in the positioning groove, and adjusts the opening and closing angle of the clamping plate; after the adjustment is completed, the adjusting handle is released and the pressure generated by the rebound of the spring will drive the limiting gasket to fit the inner wall of the movable groove; the limiting gasket is made of rubber, which increases the friction force of the limiting gasket when it moves in the movable groove, thereby reducing the probability of the limiting gasket moving, and avoiding the clamping plate from loosening during clamping and use.

[0013] The adjusting ring is driven to rotate by rotating the adjusting plate, and the adjusting ring drives the clamping plate to rotate along the clamping column as the center of the circle at the same time. The opening and closing angles of the clamping plate are limited by the cooperation of the sliding groove and the sliding block, so that the opening diameters between the clamping plates in a circular array can be flexibly adjusted, so that the two ends of the fixed sleeve can be adapted to pipe fittings of different calibers respectively, thereby improving the adaptability between the fixed sleeve and the pipe fitting. A rubber strip is installed on the side of the clamping plate that is in contact with the pipe fitting, thereby improving the sealing effect between the clamping plate and the outer wall of the pipe fitting.

[0014] By opening the sealing cover and aligning the output end of the air pump with the connecting pipe, the gas can enter the interior of the sealing ring from the inflation port through the connecting pipe. The sealing ring is made of rubber and can be deformed. The gas entering the sealing ring drives the sealing ring to expand, so that the outer wall of the sealing ring fits with the outer wall of the pipe joint, and the connection between the two sections of the pipe joint achieves a sealed effect, thereby improving the airtightness of the two sections of the pipe joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0016] Figure 1 It is a schematic diagram of the overall structure of a pipe joint locking structure of the present invention;

[0017] Figure 2 It is a cross-sectional view of a locking track in a pipe joint locking structure of the present invention;

[0018] Figure 3 It is a schematic diagram of the internal structure of a limit clamp ring in a pipe joint locking structure of the present invention;

[0019] Figure 4 It is a schematic diagram of the overall structure of a clamping plate in a pipe joint locking structure of the present invention;

[0020] Figure 5It is a cross-sectional view of a limit clamp ring in a pipe joint locking structure of the present invention;

[0021] Figure 6 It is a schematic diagram of the internal structure of a fixed sleeve in a pipe joint locking structure of the present invention;

[0022] Figure 7 It is a cross-sectional view of a sealing ring in a pipe joint locking structure of the present invention;

[0023] In the figure: 1. fixing sleeve; 2. limiting snap ring; 3. locking track; 4. adjusting plate; 5. limiting groove; 6. adjusting handle; 7. round rod; 8. connecting rod; 9. through hole; 10. spring; 11. installing rod; 12. connecting base; 13. limiting gasket; 14. movable groove; 15. adjusting ring; 16. slide groove; 17. clamping plate; 18. clamping column; 19. limiting bottom plate; 20. clamping groove; 21. sliding block; 22. positioning groove; 23. gear; 24. groove; 25. gear ring; 26. installation port; 27. fixing snap ring; 28. sealing ring; 29. ​​connecting pipe; 30. sealing cover; 31. inflation port. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0025] See also Figure 1-Figure 4 The present invention provides a technical solution: a pipe joint locking structure, comprising a fixed sleeve 1, limited clamping rings 2 are installed at both ends of the fixed sleeve 1, locking rails 3 are installed on the two limited clamping rings 2, positioning grooves 22 are opened on the two limited clamping rings 2, an adjusting plate 4 is installed inside the positioning groove 22, the locking rail 3 is located at the rear side of the adjusting plate 4, the locking rail 3 is located outside the positioning groove 22, a locking structure is installed on the rear side of the adjusting plate 4, the locking structure is located inside the locking rail 3, a plurality of clamping plates 17 are installed inside the limited clamping ring 2, an adjusting member is installed on the clamping plate 17, and a sealing structure is installed inside the fixed sleeve 1. The positioning groove 22 is set to limit the activity trajectory of the adjusting plate 4, so as to control the angle at which the adjusting plate 4 can drive the adjusting ring 15 to rotate, so as to avoid the adjusting ring 15 from rotating too much, driving the clamping plate 17 to rotate too much, so that the sliding block 21 falls off from the inside of the slide groove 16, and the stability of the clamping plate 17 during use is improved.

[0026] See also Figure 2The locking structure includes a movable groove 14, a movable groove 14 is opened inside the locking track 3, a limiting groove 5 is opened on the side of the locking track 3 close to the adjusting plate 4, the limiting groove 5 is communicated with the inside of the movable groove 14, a through hole 9 is opened on the adjusting plate 4, a round rod 7 is installed on the side of the adjusting plate 4 away from the locking track 3, an adjusting handle 6 is installed on the side of the round rod 7 away from the adjusting plate 4, a connecting rod 8 is installed on the side of the round rod 7 close to the adjusting plate 4, the connecting rod 8 is inserted in the through hole 9, and an insert rod 11 is installed at the other end of the connecting rod 8. The insert rod 11 is located inside the movable groove 14, a connecting base 12 is installed at the bottom of the insert rod 11, and a limiting gasket 13 is installed at the bottom of the connecting base 12, and the bottom of the limiting gasket 13 is in contact with the inner wall of the movable groove 14, and a spring 10 is sleeved on the outside of the insert rod 11, and the top of the spring 10 is in contact with the inner wall of the movable groove 14 The diameter of the spring 10 is larger than the width of the limiting groove 5, and the diameter of the installing rod 11 is larger than the width of the limiting groove 5. Through the cooperation of the set spring 10 and the installing rod 11, when the adjusting handle 6 is pulled by external force, the pulling force drives the connecting rod 8 to drive the installing rod 11 to lift up, and at the same time squeezes the spring 10 to compress it, so that the limiting gasket 13 is separated from the inner wall of the movable groove 14, and the restricting effect on the position of the adjusting plate 4 is released. The limiting gasket 13 is made of rubber material, which increases the friction in the movable groove 14. Therefore, after the adjusting plate 4 drives the clamping plate 17 to fit the outer wall of the pipe fitting, when the adjusting handle 6 is released, the extrusion force generated by the reset of the spring 10 will drive the bottom of the limiting gasket 13 to fit the movable groove 14, thereby limiting the adjusting plate 4, making the clamping plate 17 close to the outer wall of the pipe fitting, and improving the clamping effect of the clamping plate 17.

[0027] See also Figure 3-Figure 5The adjusting member includes an adjusting ring 15, which is installed inside the limiting clamping ring 2. An adjusting plate 4 is installed on the outer wall of the adjusting ring 15. A plurality of slide grooves 16 are provided on the side of the adjusting ring 15 close to the fixed sleeve 1. A plurality of clamping plates 17 are installed on the side of the adjusting ring 15 close to the fixed sleeve 1. A limiting bottom plate 19 is installed on the side of the clamping plate 17 away from the adjusting ring 15. The limiting bottom plate 19 is installed inside the limiting clamping ring 2. A plurality of clamping grooves 20 are provided on the side of the limiting bottom plate 19 close to the clamping plate 17. The plurality of clamping plates 17 are distributed in a circular array. A sliding block 21 is installed on the side of the plurality of clamping plates 17 close to the adjusting ring 15. The sliding block 21 is installed in the slide groove 16. A clamping column 18 is installed on the side of the clamping plate 17 close to the limiting bottom plate 19. The clamping column 18 is located at the end of the clamping plate 17 away from the sliding block 21, the clamping column 18 is inserted in the clamping groove 20, a groove 24 is opened inside the limiting clamping ring 2, a gear 23 is installed on the side of the adjusting ring 15 close to the groove 24, a gear ring 25 is installed on the inner wall of the groove 24, the groove 24 and the gear ring 25 are meshed with each other, and the position of the rotating adjusting plate 4 is set to drive the adjusting ring 15 to drive the gear 23 to rotate along the gear ring 25, and the sliding block 21 is moved in the slide groove 16 while the adjusting ring 15 rotates, so that the clamping plate 17 is driven to rotate with the clamping column 18 inserted in the clamping groove 20 as the center of the circle, thereby achieving the opening and closing effect of multiple clamping plates 17, which is convenient for the clamping plate 17 to clamp pipes of different diameters and improve the adaptability of the fixed sleeve 1 and the pipe fittings.

[0028] See also Figure 6 and Figure 7 The sealing structure includes a fixing snap ring 27, which is installed inside the fixing sleeve 1. The outer diameter of the fixing snap ring 27 is the same as the inner diameter of the fixing sleeve 1. A mounting opening 26 is provided on the outer wall of the fixing sleeve 1, and a sealing ring 28 is installed on the inner wall of the fixing snap ring 27. A connecting pipe 29 is installed above the fixing snap ring 27. The connecting pipe 29 is inserted inside the mounting opening 26, and one end of the connecting pipe 29 is located outside the mounting opening 26. A sealing cover 30 is installed on the end of the connecting pipe 29 located outside the mounting opening 26. An inflation port 31 is provided on the connecting pipe 29, and the inflation port 31 is communicated with the inside of the sealing ring 28. The inflation port 31 is located at the lower side of the connecting pipe 29. Through the cooperation of the connecting pipe 29 and the sealing cover 30, the air inlet of the connecting pipe 29 can be blocked when it is not needed, so as to prevent debris from falling into the connecting pipe 29 and causing the connecting pipe 29 to be blocked, and reduce the situation where the connecting pipe 29 is blocked and cannot be inflated when the inside of the sealing ring 28 needs to be inflated.

[0029] Specific implementation method: first, pull the adjustment handle 6 outward to release the limiting effect, drive the adjustment plate 4 to rotate to one side to adjust the opening diameter between the clamping plates 17 to the maximum limit, put one end of the fixed sleeve 1 on one of the pipe joints, and then rotate the position of the adjustment plate 4 to drive the clamping plate 17 to clamp and fix the outer wall of the pipe joint, and then insert the other section of the pipe joint into the other end of the fixed sleeve 1, and then move the position of the adjustment plate 4 to drive the clamping plate 17 to clamp and fix the outer wall of the pipe joint. After clamping is completed, inflate the inside of the sealing ring 28 through the connecting pipe 29, so that the sealing ring 28 expands and fits the outer walls of the two sections of the pipe joints respectively, thereby improving the airtightness inside the fixed sleeve 1.

[0030] By pulling the adjusting handle 6 outward, the round rod 7 is moved away from the adjusting plate 4, and the connecting rod 8 drives the installing rod 11 to approach the adjusting plate 4, so that the spring 10 is squeezed to the side close to the adjusting plate 4, and the installing rod 11 drives the limiting gasket 13 to lift up to release the restriction on the position of the adjusting plate 4, and the adjusting ring 15 is driven to rotate by moving the position of the adjusting plate 4 in the positioning groove 22 to adjust the opening and closing angle of the clamping plate 17. After the adjustment is completed, the adjusting handle 6 is released, and the pressure generated by the rebound of the spring 10 will drive the limiting gasket 13 to fit the inner wall of the movable groove 14. The limiting gasket 13 is made of rubber, which increases the friction force when the limiting gasket 13 moves in the movable groove 14, thereby reducing the limiting gasket The probability of the gasket 13 moving position prevents the clamping plate 17 from loosening during the clamping process. The adjusting ring 15 is driven to rotate by rotating the adjusting plate 4. The adjusting ring 15 drives the clamping plate 17 to rotate along the clamping column 18 as the center of the circle. The opening and closing angles of the clamping plate 17 are limited by the cooperation of the sliding groove 16 and the sliding block 21, which facilitates the flexible adjustment of the opening diameter size between the multiple clamping plates 17 in a circular array, so that the two ends of the fixed sleeve 1 can be adapted to pipe fittings of different calibers respectively, thereby improving the adaptability between the fixed sleeve 1 and the pipe fittings. A rubber strip is installed on one side of the clamping plate 17 that is in contact with the pipe fittings, thereby improving the sealing effect between the clamping plate 17 and the outer wall of the pipe fittings.

[0031] By opening the sealing cover 30 and aligning the output end of the air pump with the connecting pipe 29, the gas can enter the sealing ring 28 from the inflation port 31 through the connecting pipe 29. The sealing ring 28 is made of rubber and can be deformed. The gas enters the sealing ring 28 to drive the sealing ring 28 to expand, so that the outer wall of the sealing ring 28 fits with the outer wall of the pipe joint, and the connection between the two sections of the pipe joint achieves a sealed effect, thereby improving the airtightness of the two sections of the pipe joint.

[0032] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A pipe joint locking structure, comprising a fixing sleeve (1), characterized in that: Limiting clamps (2) are installed at both ends of the fixed sleeve (1), and locking tracks (3) are installed on the two limiting clamps (2). Positioning grooves (22) are opened on the two limiting clamps (2), and an adjustment plate (4) is installed inside the positioning groove (22). The locking track (3) is located at the rear side of the adjustment plate (4), and the locking track (3) is located outside the positioning groove (22). A locking structure is installed on the rear side of the adjustment plate (4), and the locking structure is located inside the locking track (3). A plurality of clamping plates (17) are installed inside the limiting clamps (2), and an adjusting member is installed on the clamping plate (17). A sealing structure is installed inside the fixed sleeve (1).

2. A pipe joint locking structure according to claim 1, characterized in that: The locking structure comprises a movable groove (14), the movable groove (14) is provided inside the locking track (3), a limiting groove (5) is provided on a side of the locking track (3) close to the adjustment plate (4), the limiting groove (5) is communicated with the inside of the movable groove (14), a through hole (9) is provided on the adjustment plate (4), a round rod (7) is installed on the side of the adjustment plate (4) away from the locking track (3), an adjustment handle (6) is installed on the side of the round rod (7) away from the adjustment plate (4), a connecting rod (8) is installed on the side of the round rod (7) close to the adjustment plate (4), the connecting rod (8) is inserted in the inside of the through hole (9), and an insertion rod (11) is installed on the other end of the connecting rod (8), and the insertion rod (11) is located in the movable groove (14).

3. A pipe joint locking structure according to claim 2, characterized in that: A connecting base (12) is installed at the bottom of the insertion rod (11), and a limiting gasket (13) is installed at the bottom of the connecting base (12). The bottom of the limiting gasket (13) is in contact with the inner wall of the movable groove (14). A spring (10) is sleeved on the outer side of the insertion rod (11), and the top of the spring (10) is connected to the inner wall of the movable groove (14). The diameter of the spring (10) is greater than the width of the limiting groove (5), and the diameter of the insertion rod (11) is greater than the width of the limiting groove (5).

4. The pipe joint locking structure according to claim 1, characterized in that: The adjusting member comprises an adjusting ring (15), the adjusting ring (15) being mounted inside a limiting clamping ring (2), an adjusting plate (4) being mounted on an outer wall of the adjusting ring (15), a plurality of sliding grooves (16) being provided on a side of the adjusting ring (15) close to the fixed sleeve (1), a plurality of clamping plates (17) being mounted on a side of the adjusting ring (15) close to the fixed sleeve (1), a limiting bottom plate (19) being mounted on a side of the clamping plate (17) away from the adjusting ring (15), the limiting bottom plate (19) being mounted inside the limiting clamping ring (2), and a plurality of clamping grooves (20) being provided on a side of the limiting bottom plate (19) close to the clamping plate (17).

5. A pipe joint locking structure according to claim 4, characterized in that: The plurality of clamping plates (17) are distributed in a circular array, and a sliding block (21) is installed on one side of the clamping plates (17) close to the adjusting ring (15), and the sliding block (21) is installed inside the slide groove (16). A clamping column (18) is installed on one side of the clamping plate (17) close to the limiting bottom plate (19), and the clamping column (18) is located at one end of the clamping plate (17) away from the sliding block (21), and the clamping column (18) is inserted into the clamping groove (20).

6. A pipe joint locking structure according to claim 4, characterized in that: A groove (24) is provided inside the limiting clamp ring (2); a gear (23) is installed on the side of the adjusting ring (15) close to the groove (24); a gear ring (25) is installed on the inner wall of the groove (24); the groove (24) and the gear ring (25) are meshed with each other.

7. The pipe joint locking structure according to claim 1, characterized in that: The sealing structure comprises a fixed snap ring (27), the fixed snap ring (27) being installed inside the fixed sleeve (1), the outer diameter of the fixed snap ring (27) being the same as the inner diameter of the fixed sleeve (1), a mounting opening (26) being provided on the outer wall of the fixed sleeve (1), and a sealing ring (28) being installed on the inner wall of the fixed snap ring (27).

8. A pipe joint locking structure according to claim 7, characterized in that: A connecting pipe (29) is installed above the fixing clamp ring (27). The connecting pipe (29) is inserted into the installation opening (26). One end of the connecting pipe (29) is located outside the installation opening (26). A sealing cover (30) is installed at the end of the connecting pipe (29) located outside the installation opening (26). An air charging port (31) is opened on the connecting pipe (29). The air charging port (31) is communicated with the inside of the sealing ring (28). The air charging port (31) is located at the lower side of the connecting pipe (29).

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