Clamping type double-clamping-sleeve pipe joint

Abstract

The utility model discloses a clamping type double-ferrule pipe joint which comprises a joint body, a fixing ring is installed on the outer wall of the middle of the joint body, a pipeline connecting assembly is installed at one end of the joint body, the pipeline connecting assembly comprises a threaded groove formed in the outer wall of the joint body, and the threaded groove is located on one side of the fixing ring. A threaded sleeve is arranged on one side of the fixing ring, the end of the pipeline is installed in the connector body, the outer wall of the connector body is sleeved with the threaded sleeve, the threaded sleeve is in threaded connection with the connector body through a threaded groove, and a front clamping sleeve and a rear clamping sleeve are installed between the threaded sleeve and the connector body. In the working process, after the front clamping sleeve and the rear clamping sleeve are pressed tightly through threaded connection of the thread sleeve and the connector body, the screw rod is screwed to adjust the mounting plate to the position where the clamping rod corresponds to the clamping groove, the clamping rod is clamped into the clamping groove, the fixing effect between the thread sleeve and the connector body is improved, and the loosening probability of the thread sleeve is reduced; the fixing stability of the pipeline is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of double-clip sleeve pipe joints, in particular to a clamping type double-clip sleeve pipe joint. Background Art

[0002] Double-ferrule pipe joint is a kind of equipment that can directly fix the steel pipe by inserting the steel pipe into the ferrule without welding the steel pipe and the joint. Double-ferrule pipe joint is conducive to fire prevention, explosion prevention and high-altitude operation, and can eliminate the disadvantages caused by careless welding. Therefore, it is a more advanced connector in the pipeline of automatic control devices in systems such as oil refining, chemical industry, petroleum, natural gas, food, pharmaceutical, instrumentation, etc. It is suitable for connecting oil, gas, water and other pipelines. Generally, double-ferrule pipe joint consists of a joint body, a screw sleeve, a front ferrule and a rear ferrule. When in use, insert the end of the pipeline into the joint body, install the front ferrule, the rear ferrule and the screw sleeve on the outside of the pipeline in sequence, and after the screw sleeve is tightened on the outside of the joint body, the joint body and the screw sleeve press the front ferrule and the rear ferrule, so that the front ferrule and the rear ferrule tighten the pipeline to complete the installation, but there are the following defects:

[0003] When double-ferrule pipe fittings are used for a long time, the connection between the fitting body and the threaded sleeve may become loose, so that the connection between the fitting body and the steel pipe is no longer tight, and the fitting body and the steel pipe may become detached. Utility Model Content

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a card-type double-card sleeve pipe joint, which effectively solves the problem that the connection between the joint body and the threaded sleeve may become loose after long-term use.

[0005] To achieve the above object, the utility model provides the following technical solution: a card-type double-card sleeve pipe joint, comprising a joint body, a fixing ring is installed on the middle outer wall of the joint body, and a pipe connection assembly is installed at one end of the joint body;

[0006] The pipeline connection component includes a threaded groove opened on the outer wall of the joint body, the threaded groove is located on one side of the fixing ring, a threaded sleeve is provided on one side of the fixing ring, the end of the pipeline is installed inside the joint body, the outer wall of the joint body is provided with a threaded sleeve, the threaded sleeve is threadedly connected to the joint body through the threaded groove, a front ferrule and a rear ferrule are installed between the threaded sleeve and the joint body, the front ferrule is located on the side of the rear ferrule close to the joint body, when the threaded sleeve is tightened, the threaded sleeve and the joint body press the front ferrule and the rear ferrule, the front ferrule and the rear ferrule clamp the pipeline, and a fixed clamping component is installed between the threaded sleeve and the fixing ring.

[0007] Preferably, the fixed clamping assembly comprises an annular groove formed on the outer wall of the screw sleeve, a connecting ring is rotatably mounted inside the annular groove, and a connecting seat is mounted on the top end of the connecting ring.

[0008] Preferably, a screw barrel is installed on the connecting seat, a screw rod is installed on the internal thread of the screw barrel, and a mounting plate is provided at one end of the screw rod close to the fixing ring.

[0009] Preferably, the mounting plate is located above the fixing ring, a fixing cylinder is installed on the top of the mounting plate, a clamping rod is movably installed inside the fixing cylinder, the bottom end of the clamping rod is clamped in the inside of the clamping slot, the clamping slot is opened at the top of the fixing ring, a spring is installed on the top of the clamping rod, the top of the spring is fixedly connected to the inner top wall of the fixing cylinder, a pull rod is installed on the top of the clamping rod, and the top end of the pull rod passes through to the top of the fixing cylinder.

[0010] Preferably, an end block is installed at one end of the mounting plate close to the screw, and a limit rotation block is installed at one end of the screw close to the end block. The limit rotation block is rotatably installed inside the limit rotation groove, and the limit rotation groove is opened inside the end block.

[0011] Preferably, a turning handle is fixedly mounted on the end of the screw, a nut is threadedly mounted on the outer side of the screw, and the nut is located on a side of the screw barrel away from the fixing ring.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] During operation, after the front ferrule and the rear ferrule are compressed by threading the set screw sleeve with the joint body, the screw is turned to adjust the mounting plate to the corresponding position of the clamping rod and the clamping slot, and the clamping rod is clamped into the inside of the clamping slot to improve the fixing effect between the screw sleeve and the joint body, reduce the loosening probability of the screw sleeve, and improve the fixing stability of the pipeline;

[0014] During operation, the screw rod is set to be connected with the screw barrel on the connecting seat through threaded connection, the connecting seat is installed on the connecting ring, and the connecting ring is limited and rotated in the annular groove on the outer wall of the screw sleeve. When the distance between the screw sleeve and the joint body changes, the distance is adjusted through the screw rod to expand the scope of application and facilitate the installation of pipes with different diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0016] In the attached picture:

[0017] Figure 1 This is a schematic diagram of the structure of a clamping type double clamping sleeve pipe joint of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the pipeline connection assembly of the utility model;

[0019] Figure 3This is a schematic diagram of the structure of the fixed clamping assembly of the utility model;

[0020] Figure 4 This is a schematic diagram of the mounting plate structure of the utility model.

[0021] In the figure: 1. connector body; 2. fixing ring; 3. pipe connection assembly; 301. threaded groove; 302. screw sleeve; 303. front ferrule; 304. rear ferrule; 4. fixed clamping assembly; 401. annular groove; 402. clamping groove; 403. connecting ring; 404. connecting seat; 405. screw barrel; 406. screw rod; 407. turning handle; 408. mounting plate; 409. fixing barrel; 410. clamping rod; 411. spring; 412. pull rod; 413. end block; 414. limit rotation groove; 415. limit rotation block; 416. nut. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0023] Embodiment 1, by Figure 1-4 The utility model relates to a card-type double-card sleeve pipe joint, comprising a joint body 1, a fixing ring 2 is installed on the middle outer wall of the joint body 1, and a pipe connection assembly 3 is installed at one end of the joint body 1;

[0024] The pipe connection assembly 3 includes a threaded groove 301 opened on the outer wall of the joint body 1, the threaded groove 301 is located on one side of the fixing ring 2, a threaded sleeve 302 is provided on one side of the fixing ring 2, the pipe end is installed inside the joint body 1, the outer wall of the joint body 1 is provided with a threaded sleeve 302, the threaded sleeve 302 is threadedly connected to the joint body 1 through the threaded groove 301, a front ferrule 303 and a rear ferrule 304 are installed between the threaded sleeve 302 and the joint body 1, the front ferrule 303 is located on the side of the rear ferrule 304 close to the joint body 1, when the threaded sleeve 302 is tightened, the threaded sleeve 302 and the joint body 1 press the front ferrule 303 and the rear ferrule 304, the front ferrule 303 and the rear ferrule 304 clamp the pipe, and a fixed clamping assembly 4 is installed between the threaded sleeve 302 and the fixing ring 2.

[0025] The fixed clamping assembly 4 includes an annular groove 401 formed on the outer wall of the screw sleeve 302, a connecting ring 403 is rotatably mounted inside the annular groove 401, a connecting seat 404 is mounted on the top of the connecting ring 403, a screw barrel 405 is mounted on the connecting seat 404, a screw rod 406 is mounted on the internal thread of the screw barrel 405, a mounting plate 408 is provided at one end of the screw rod 406 close to the fixed ring 2, the mounting plate 408 is located above the fixed ring 2, a fixed barrel 409 is mounted on the top of the mounting plate 408, and a clamp rod is movably mounted inside the fixed barrel 409 410, the bottom end of the clamping rod 410 is clamped in the interior of the clamping slot 402, the clamping slot 402 is opened at the top of the fixing ring 2, the top of the clamping rod 410 is installed with a spring 411, the top of the spring 411 is fixedly connected to the inner top wall of the fixing cylinder 409, the top of the clamping rod 410 is installed with a pull rod 412, the top of the pull rod 412 penetrates to the top of the fixing cylinder 409, the end of the mounting plate 408 close to the screw 406 is installed with an end block 413, the end of the screw 406 close to the end block 413 is installed with a limit rotation block 415, the limit rotation block 415 15 is rotatably installed inside the limit rotation groove 414, and the limit rotation groove 414 is opened inside the end block 413. The end of the screw rod 406 is fixedly installed with a turning handle 407, and the outer side of the screw rod 406 is threadedly installed with a nut 416. The nut 416 is located on the side of the screw barrel 405 away from the fixing ring 2. After the screw sleeve 302 is threadedly connected with the joint body 1 to press the front ferrule 303 and the rear ferrule 304 tightly, the screw rod 406 is turned to adjust the mounting plate 408 to the corresponding position of the clamping rod 410 and the clamping groove 402, and the clamping rod 410 is clamped into the clamping groove 40 2 inside, improve the fixing effect between the screw sleeve 302 and the joint body 1, reduce the loosening probability of the screw sleeve 302, and improve the fixing stability of the pipeline. The screw rod 406 is threadedly connected with the screw barrel 405 on the connecting seat 404. The connecting seat 404 is installed on the connecting ring 403. The connecting ring 403 is limited and rotatably installed in the annular groove 401 on the outer wall of the screw sleeve 302. When the distance between the screw sleeve 302 and the joint body 1 changes, the distance is adjusted by the screw rod 406, which expands the scope of application and facilitates the installation of pipelines with different diameters.

[0026] Working principle: During installation, insert the end of the pipe into the joint body 1, sleeve the front ferrule 303 and the rear ferrule 304 on the outside of the pipe, and the front ferrule 303 and the rear ferrule 304 are located at one end of the joint body 1 close to the thread groove 301, install the screw sleeve 302 on the outside of the joint body 1, and the screw sleeve 302 is threadedly connected with the joint body 1. When the screw sleeve 302 is continuously tightened, the inner wall of the screw sleeve 302 and the outer wall of the end of the joint body 1 press the front ferrule 303 and the rear ferrule 304, and under the action of pressure, the front ferrule 303 and the rear ferrule 304 are pressed and the outer wall of the pipe is clamped, thereby fixing the pipe;

[0027] During the installation process, the pull rod 412 is pulled to make the clamping rod 410 enter the interior of the fixing tube 409. After installation, the screw 406 is rotated by turning the handle 407. Since the screw 406 is threadedly connected with the screw tube 405, the screw 406 moves, and the clamping rod 410 on the mounting plate 408 corresponds to the clamping groove 402 on the fixing ring 2. Then, the pull rod 412 is loosened, so that the clamping rod 410 moves downward under the elastic force of the spring 411 and is clamped into the interior of the clamping groove 402. Then, the nut 416 is tightened to improve the fixing effect between the screw sleeve 302 and the joint body 1, reduce the loosening probability of the screw sleeve 302, and improve the fixing stability of the pipeline;

[0028] The screw rod 406 is threadedly connected to the screw barrel 405 on the connecting seat 404, and the connecting seat 404 is installed on the connecting ring 403. The connecting ring 403 is limitedly rotated and installed in the annular groove 401 on the outer wall of the screw sleeve 302. When installing pipes of different diameters and the distance between the screw sleeve 302 and the joint body 1 changes, the distance is adjusted by the screw rod 406 to expand the scope of application.

Claims

1. A double-ferrule clamping pipe joint, comprising a joint body (1), characterized in that: A fixing ring (2) is installed on the middle outer wall of the joint body (1), and a pipe connection assembly (3) is installed on one end of the joint body (1); The pipe connection assembly (3) comprises a thread groove (301) formed on the outer wall of a joint body (1), the thread groove (301) being located on one side of a fixing ring (2), a thread sleeve (302) being provided on one side of the fixing ring (2), the pipe end being installed inside the joint body (1), the outer wall of the joint body (1) being provided with a thread sleeve (302), the thread sleeve (302) being threadedly connected to the joint body (1) via the thread groove (301), the thread sleeve (302) being connected to the joint body (1) 1), a front ferrule (303) and a rear ferrule (304) are installed between the threaded sleeve (302) and the fixing ring (2), the front ferrule (303) is located on the side of the rear ferrule (304) close to the joint body (1), when the threaded sleeve (302) is tightened, the threaded sleeve (302) and the joint body (1) press the front ferrule (303) and the rear ferrule (304), the front ferrule (303) and the rear ferrule (304) clamp the pipe, and a fixed clamping assembly (4) is installed between the threaded sleeve (302) and the fixing ring (2).

2. A card-type double-ferrule pipe joint according to claim 1, characterized in that: The fixed clamping assembly (4) comprises an annular groove (401) formed on the outer wall of the screw sleeve (302), a connecting ring (403) is rotatably mounted inside the annular groove (401), and a connecting seat (404) is mounted on the top end of the connecting ring (403).

3. A card-type double-ferrule pipe joint according to claim 2, characterized in that: A screw barrel (405) is installed on the connecting seat (404), a screw rod (406) is installed on the internal thread of the screw barrel (405), and a mounting plate (408) is provided at one end of the screw rod (406) close to the fixing ring (2).

4. The double-ferrule clamping pipe joint according to claim 3, characterized in that: The mounting plate (408) is located above the fixing ring (2), a fixing tube (409) is mounted on the top of the mounting plate (408), a clamping rod (410) is movably mounted inside the fixing tube (409), the bottom end of the clamping rod (410) is clamped inside the clamping groove (402), the clamping groove (402) is opened at the top of the fixing ring (2), a spring (411) is mounted on the top of the clamping rod (410), the top of the spring (411) is fixedly connected to the inner top wall of the fixing tube (409), a pull rod (412) is mounted on the top of the clamping rod (410), and the top end of the pull rod (412) passes through to the top of the fixing tube (409).

5. The double-ferrule clamping pipe joint according to claim 3, characterized in that: An end block (413) is installed at one end of the mounting plate (408) close to the screw rod (406), and a limit rotation block (415) is installed at one end of the screw rod (406) close to the end block (413). The limit rotation block (415) is rotatably installed inside a limit rotation groove (414), and the limit rotation groove (414) is opened inside the end block (413).

6. The double-ferrule clamping pipe joint according to claim 3, characterized in that: A turning handle (407) is fixedly mounted on the end of the screw rod (406), and a nut (416) is threadedly mounted on the outer side of the screw rod (406), wherein the nut (416) is located on a side of the screw barrel (405) away from the fixing ring (2).

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