High-pressure-resistant double-clamping sleeve joint with good sealing performance

Abstract

The utility model discloses a double-ferrule joint with high pressure resistance and good sealing performance, which relates to the technical field of pipe joints and comprises a nut sleeve seat, a joint body is arranged on one side of the nut sleeve seat, an external solenoid is integrally formed at one end of the joint body, and a connecting end sleeve is integrally formed at one end of the nut sleeve seat. A connecting pipe is inserted into the connecting end sleeve; the annular movable groove is formed in the outer wall of the periphery of the nut sleeve seat, a connecting sliding block is movably arranged in the annular movable groove, a sleeving ring seat is integrally formed at the upper end of the connecting sliding block, and a guide inserting rod is arranged in the sleeving ring seat in a penetrating mode; the bearing seat is integrally formed and arranged on the outer wall of the joint body, and the problems that according to an existing pipe joint structure, oil leakage of a pipe joint is prevented through locking and positioning of an arranged locking structure, but after the pipe joint is connected, an effective clamping and sealing mechanism is lacked in the pipe joint, and consequently the sealing performance of the pipe joint is poor are solved.

Description

Technical Field

[0001] This utility model relates to the field of pipe fitting technology, specifically a double-compression fitting with good high-pressure resistance and sealing performance. Background Technology

[0002] In hydraulic terminology, the term refers to the parts that connect pipelines or mount pipelines onto hydraulic components in a hydraulic system. It is a general term for detachable connectors in a fluid passage.

[0003] For example, the announcement number is CN222103012U (named "A High-Pressure Oil Pipe Joint with Good Sealing"), which includes a fixed pipe, a connecting pipe with an outer diameter smaller than the fixed pipe that is fixed to both ends of the fixed pipe, a threaded sleeve that is threadedly connected to the connecting pipe, and a locking assembly installed on the fixed pipe; the locking assembly includes a locking post that is movably disposed inside the fixed pipe and extends one end out of the end face of the fixed pipe, a fixed baffle that is sleeved on the locking post and fixedly connected to the locking post, and springs that abut against the fixed baffle and the fixed pipe respectively at both ends, with the end of the fixed baffle away from the spring abutting against the fixed pipe; the end face of the locking post extending out of the fixed pipe is a hemispherical surface, and when the threaded sleeve is threadedly connected... After being connected to the connecting pipe, the hemispherical end of the locking pin can be locked onto the threaded sleeve. By setting up a fixing pipe, connecting pipe, threaded sleeve, and locking assembly, the threaded sleeve is first fitted onto one end of the high-pressure oil pipe to be connected, and then the end of the high-pressure oil pipe to be connected is inserted into the connecting pipe. The threaded sleeve can tighten the connecting pipe, thereby stably connecting the high-pressure oil pipe to the oil pipe joint. When the locking pin is locked into the threaded sleeve, the locking pin applies resistance to the threaded sleeve in a direction different from its turning direction, and the threaded sleeve is not easy to rotate automatically in the opposite direction, thereby reducing the possibility of loosening when the oil pipe is connected to the oil pipe joint, thus improving the sealing performance of the oil pipe joint and reducing the occurrence of oil leakage at the oil pipe joint.

[0004] The above-mentioned pipe fitting structure uses a locking structure to lock and position the pipe fitting to prevent oil leakage. However, after the pipe fitting is connected, it lacks an effective locking and sealing mechanism inside, resulting in poor sealing performance. To address this, we provide a double ferrule pipe fitting with good high pressure resistance and sealing performance. Utility Model Content

[0005] The purpose of this utility model is to provide a double-ferrule pipe joint with good high pressure resistance and sealing performance, so as to solve the problem mentioned in the background art that the existing pipe joint structure prevents oil leakage by locking and positioning through the set locking structure, but the pipe joint lacks an effective locking and sealing mechanism after connection, resulting in poor sealing performance of the pipe joint.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a double-clamp tube connector with good high pressure resistance and sealing performance, including a nut sleeve, a connector body is provided on one side of the nut sleeve, an external threaded tube is integrally formed at one end of the connector body, a connecting end sleeve is integrally formed at one end of the nut sleeve, and a connecting tube is inserted and installed inside the connecting end sleeve.

[0007] Also includes:

[0008] An annular movable groove is provided on the outer wall around the nut sleeve, and a connecting slider is movably provided inside the annular movable groove. A sleeve ring seat is integrally formed at the upper end of the connecting slider, and a guide rod is inserted through the sleeve ring seat.

[0009] The bearing seat is integrally formed on the outer wall of the connector body. The guide rod and the bearing seat are an integral structure. The guide rod has a positioning hole inside. A locking rod is installed inside the positioning hole. The locking rod abuts against the outer wall of the sleeve ring seat.

[0010] The rear and front ferrules are located inside the nut sleeve. Both the rear and front ferrules are integral with the nut sleeve and are sleeved and abutted against the outer wall of the connecting pipe.

[0011] Preferably, limiting annular grooves are provided on both inner walls of the annular movable groove. The two limiting annular grooves and the nut sleeve are integral structures. An inner slider is movably arranged inside the two limiting annular grooves. The two inner sliders and the connecting slider are integral structures.

[0012] Preferably, the two inner sliders are provided with rollers inside through a rotating shaft and bearings, and the inner sliders are rolledly connected to the limiting ring groove through the rollers.

[0013] Preferably, the top of the locking rod is integrally formed with a pull cap, and the locking rod is magnetically fixed to the positioning hole.

[0014] Preferably, the other end of the connector body is integrally formed with an inner end, which fits into the front ferrule. A threaded groove is provided on the inner wall of the nut sleeve, and the connecting pipe passes through the threaded groove and extends into the interior of the inner end.

[0015] Preferably, a connecting thread is provided on the outer wall of one end of the inner end, and the inner end is connected to the threaded groove on the inner wall of the nut sleeve through the connecting thread.

[0016] Preferably, the inner end is provided with an abutment slot, and the connecting pipe is connected to the inner end through the abutment slot.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This utility model improves the sealing performance of the pipe fitting by using a rear ferrule and a front ferrule to fit snugly against the outer wall of the connecting pipe. The rear ferrule and the front ferrule form a double ferrule structure. Compared with threaded, reamed, and single ferrule fittings, the double ferrule pipe fitting is a small-diameter pipe connector that balances sealing and safety. A good double ferrule pipe fitting can withstand pressures up to the point of pipe bursting without leakage. It can be used in vacuum and high-pressure liquid systems, can operate at low temperatures to ensure sealing, and can maintain a long-lasting seal at the pipe's highest rated temperature. It can be repeatedly disassembled and reassembled while maintaining a seal. It overcomes the problem that existing pipe fitting structures use a locking structure to lock and position the pipe fitting to prevent oil leakage, but lack an effective locking and sealing mechanism inside the pipe fitting after connection, resulting in poor sealing performance.

[0019] 2. The locking rod is installed into the positioning hole through magnetic connection, which limits the connection position between the guide rod and the sleeve ring seat, thereby preventing the connection between the connecting thread and the thread groove from reversing and loosening, achieving the purpose of locking the assembly connection of the pipe joint and improving the stability of the assembly connection of the pipe joint. Attached Figure Description

[0020] Figure 1 This is a front view of the double-ferrule tube joint structure with good high pressure resistance and sealing performance of this utility model;

[0021] Figure 2 This is a rear view of the double-ferrule tube joint structure of this utility model, which has good high-pressure resistance and sealing performance.

[0022] Figure 3 This is a cross-sectional view of the internal structure of the double-compression fitting with good high-pressure resistance and sealing performance of this utility model.

[0023] Figure 4 This is an enlarged schematic diagram of part A of the present invention;

[0024] In the diagram: 1. Nut sleeve; 2. Connecting end sleeve; 3. Connecting pipe; 4. Annular movable groove; 5. Connecting slider; 6. Sleeve ring seat; 7. Guide rod; 8. Connector body; 9. Bearing seat; 10. External threaded tube; 11. Internal end; 12. Abutment slot; 13. Rear ferrule; 14. Front ferrule; 15. Threaded groove; 16. Connecting thread; 17. Limiting ring groove; 18. Internal slider; 19. Roller; 20. Positioning hole; 21. Locking rod; 22. Pull-out nut. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Please see Figure 1-4 The present invention provides an embodiment of a double-clamp tube connector with good high pressure resistance and sealing performance, including a nut sleeve 1, a connector body 8 provided on one side of the nut sleeve 1, an external threaded tube 10 integrally formed at one end of the connector body 8, a connecting end sleeve 2 integrally formed at one end of the nut sleeve 1, and a connecting tube 3 inserted and installed inside the connecting end sleeve 2.

[0027] Also includes:

[0028] An annular movable groove 4 is provided on the outer wall of the nut sleeve 1, and a connecting slider 5 is movably provided inside the annular movable groove 4. A sleeve ring seat 6 is integrally formed at the upper end of the connecting slider 5, and a guide rod 7 is inserted through the sleeve ring seat 6.

[0029] The bearing seat 9 is integrally formed on the outer wall of the connector body 8. The guide rod 7 and the bearing seat 9 are integral structures. The guide rod 7 has a positioning hole 20 inside. A locking rod 21 is installed inside the positioning hole 20. The locking rod 21 abuts against the outer wall of the sleeve ring seat 6.

[0030] The rear ferrule 13 and the front ferrule 14 are located inside the nut sleeve 1. Both the rear ferrule 13 and the front ferrule 14 are integral with the nut sleeve 1. Both the rear ferrule 13 and the front ferrule 14 are sleeved and abutted against the outer wall of the connecting pipe 3.

[0031] In use, the connecting pipe 3 is inserted into the inner end 11 and contacts the abutment slot 12. Then, through the corresponding connection of the connecting thread 16 and the threaded groove 15, the connector body 8 is screwed on to install the inner end 11 into the nut sleeve 1. During the screwing installation, the guide rod 7 passes through the sleeve seat 6. Then, during the screwing and rotation, the connecting slider 5 rotates 360 degrees along the annular movable groove 4. As the connecting thread 16 and the threaded groove 15 continue to feed, the guide rod 7 gradually passes through the sleeve seat 6. After the threaded connection is in place, the rear retaining sleeve 13 and the front retaining sleeve 14 are fitted to the outer wall of the connecting pipe 3 to improve the sealing performance of the pipe connector. The rear retaining sleeve 13 and the front retaining sleeve 14 are assembled. The double ferrule structure, compared to threaded, reamed, and single ferrule fittings, is a small-diameter pipe connector that balances sealing and safety. A high-quality double ferrule fitting can withstand pressures up to the point of pipe bursting without leakage. It can be used in vacuum and high-pressure liquid systems, can operate at low temperatures to ensure sealing, and can maintain a long-lasting seal at the pipe's highest rated temperature. It can be repeatedly disassembled and reassembled while maintaining a seal. Finally, the locking rod 21 is installed into the positioning socket 20 through a magnetic connection, limiting the connection position between the guide rod 7 and the sleeve ring seat 6. This prevents the connection between the connecting thread 16 and the threaded groove 15 from reversing and loosening, achieving the purpose of locking the pipe fitting assembly connection and improving the stability of the pipe fitting assembly connection.

[0032] Please see Figure 4 Limiting annular grooves 17 are provided on both inner walls of the annular movable groove 4. The two limiting annular grooves 17 are integral with the nut sleeve 1. An inner slider 18 is movably installed inside each of the two limiting annular grooves 17. The two inner sliders 18 are integral with the connecting slider 5. The limiting annular grooves 17 on both inner walls of the annular movable groove 4 facilitate the inner movement of the inner sliders 18 and prevent the connecting slider 5 from disengaging from the annular movable groove 4. Please refer to [link / reference]. Figure 4 The two inner sliders 18 are internally connected to rollers 19 via shafts and bearings. The inner sliders 18 are tactilely connected to the limiting ring grooves 17 via these rollers 19. The rollers 19, which assist the smooth movement of the inner sliders 18 and the limiting ring grooves 17, serve to facilitate this movement. (See also...) Figure 4 The top of the locking rod 21 is integrally formed with a pull cap 22. The locking rod 21 is magnetically fixed to the positioning hole 20. The pull cap 22 integrally formed on the top of the locking rod 21 facilitates the gripping and disassembly of the locking rod 21. Please refer to [link / reference]. Figure 3The other end of the connector body 8 is integrally formed with an inner end 11, which fits into the front retainer 14. A threaded groove 15 is provided on the inner wall of the nut sleeve 1. The connecting pipe 3 passes through the threaded groove 15 and extends into the inner end 11. The integrally formed inner end 11 at the other end of the connector body 8 assists in the connection between the connector body 8 and the nut sleeve 1. Please refer to... Figure 3 The inner end 11 has a connecting thread 16 on its outer wall. The inner end 11 is connected to the threaded groove 15 on the inner wall of the nut sleeve 1 via the connecting thread 16. The connecting thread 16 on the outer wall of one end of the inner end 11 assists in the connection between the inner end 11 and the threaded groove 15. Please refer to [link / reference]. Figure 3 The inner end 11 is provided with an abutment slot 12. The connecting tube 3 is connected to the inner end 11 through the abutment slot 12. The abutment slot 12 provided inside the inner end 11 facilitates the insertion and stop connection of one end of the connecting tube 3 with the inner end 11.

[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A double-clamp tube connector with good high pressure resistance and sealing performance, comprising a nut sleeve (1), a connector body (8) is provided on one side of the nut sleeve (1), an external threaded tube (10) is integrally formed at one end of the connector body (8), a connecting end sleeve (2) is integrally formed at one end of the nut sleeve (1), and a connecting tube (3) is inserted and installed inside the connecting end sleeve (2); Its features are: Also includes: An annular movable groove (4) is provided on the outer wall of the nut sleeve (1), and a connecting slider (5) is movably provided inside the annular movable groove (4). A sleeve ring seat (6) is integrally formed at the upper end of the connecting slider (5), and a guide rod (7) is inserted through the sleeve ring seat (6). The bearing seat (9) is integrally formed on the outer wall of the connector body (8). The guide rod (7) and the bearing seat (9) are integrally formed. The guide rod (7) is provided with a positioning hole (20). A locking rod (21) is installed inside the positioning hole (20). The locking rod (21) abuts against the outer wall of the sleeve ring seat (6). The rear ferrule (13) and the front ferrule (14) are located inside the nut sleeve (1). The rear ferrule (13) and the front ferrule (14) are integral with the nut sleeve (1). The rear ferrule (13) and the front ferrule (14) are sleeved and abut against the outer wall of the connecting pipe (3).

2. The double-ferrule fitting with good high-pressure resistance and sealing performance according to claim 1, characterized in that: Limiting annular grooves (17) are provided on both inner walls of the annular movable groove (4). The two limiting annular grooves (17) and the nut sleeve (1) are integral structures. The two limiting annular grooves (17) are movably provided with inner sliders (18). The two inner sliders (18) and the connecting sliders (5) are integral structures.

3. The double-ferrule fitting with good high-pressure resistance and sealing performance according to claim 2, characterized in that: The two inner sliders (18) are equipped with rollers (19) inside through a rotating shaft and bearing. The inner sliders (18) are rolledly connected to the limiting ring groove (17) through the rollers (19).

4. The double-ferrule fitting with good high-pressure resistance and sealing performance according to claim 1, characterized in that: The top of the locking rod (21) is integrally formed with a pull cap (22), and the locking rod (21) is magnetically fixed to the positioning hole (20).

5. A double-ferrule fitting with good high-pressure resistance and sealing performance according to claim 1, characterized in that: The other end of the connector body (8) is integrally formed with an inner end (11), which fits into the front sleeve (14). A threaded groove (15) is provided on the inner wall of the nut sleeve (1), and the connecting pipe (3) passes through the threaded groove (15) and extends into the interior of the inner end (11).

6. A double-ferrule fitting with good high-pressure resistance and sealing performance according to claim 5, characterized in that: The inner end (11) has a connecting thread (16) on its outer wall. The inner end (11) is connected to the threaded groove (15) on the inner wall of the nut sleeve (1) through the connecting thread (16).

7. A double-ferrule fitting with good high-pressure resistance and sealing performance according to claim 5, characterized in that: The inner terminal (11) is provided with an abutment slot (12), and the connecting pipe (3) is connected to the inner terminal (11) through the abutment slot (12).

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