Casing pipe joint

Abstract

The utility model relates to the technical field of pipeline connecting devices, and discloses a ferrule joint which comprises a joint body, a hollow groove is formed in the middle of the inner surface of the joint body, and mounting grooves located in the left side and the right side of the hollow groove are formed in an inner cavity of the joint body; the sliding grooves are formed in the left side and the right side of the connector body; the sealing mechanism is arranged in the joint body; wherein the sealing mechanism comprises a pushing ring. Through the arrangement of the hollow groove, the pushing rings, the connecting rods, the closing plates and the springs, when the right end of the whole connector body is connected with a pipeline in a sleeved mode, the pipeline can eject the whole pushing ring on the right side, so that the closing plate on the right side relieves blocking of the interior of the connector body, and the closing plate at the other end can close the interior of the connector body under pulling of the springs; therefore, when only one end of the joint body is sleeved with the pipeline, fluid in the pipeline can be prevented from flowing out of the other end of the joint body.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline connection devices, and more specifically, to a sleeve pipe joint. Background Art

[0002] The compression fitting is a common pipe connection device and a type of pipe joint. The compression fitting is mainly composed of a joint body, a ferrule and a nut. The principle is that when the ferrule and the nut are put on the steel pipe and inserted into the joint body, when the nut is tightened, the outer side of the front end of the ferrule fits with the conical surface of the joint body, and the inner edge bites into the inside of the steel pipe evenly, thereby forming an effective seal at the interface.

[0003] When connecting pipelines, operators often use compression fittings to ensure the seal between the joint and the pipeline. In actual use, although the existing compression fittings have basic sealing functions, they are generally not sealed inside. As a result, when there is fluid inside the pipeline connected to the compression fitting, the fluid inside the pipeline will directly flow out from the other end of the compression fitting, causing fluid waste. Therefore, it is necessary to improve it. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a sleeve pipe joint which has the advantage of no liquid leakage when not connected.

[0005] To achieve the above purpose, the utility model provides the following technical solution: a sleeve pipe joint, comprising:

[0006] A joint body, wherein a hollow groove is formed in the middle of the inner surface of the joint body, and an inner cavity of the joint body is provided with mounting grooves located on the left and right sides of the hollow groove;

[0007] Sliding grooves, which are provided on the left and right sides of the joint body;

[0008] A closing mechanism, wherein the closing mechanism is arranged inside the joint body;

[0009] Among them, the closing mechanism includes a pushing ring, the outer surface of the pushing ring is movably connected to the inner surface of the sliding groove, the inner surface of the pushing ring is fixedly connected to a connecting rod, the left end of the connecting rod passes through the joint body and extends to the interior of the hollow groove and is fixedly connected to a closing plate, the outer surface of the connecting rod is movably sleeved with a spring, the outer end of the spring is fixedly connected to the inner surface of the mounting groove, the other end of the spring is fixedly connected to the outer surface of the closing plate, the spring pulls the closing plate as a whole so that the closing plate closes the joint body.

[0010] As a preferred technical solution of the utility model, a No. 1 guide groove located outside the sliding groove is provided on both the left and right sides of the inner surface of the joint body, and a No. 1 clamping sleeve is movably sleeved on the inner surface of the No. 1 guide groove.

[0011] As a preferred technical solution of the utility model, the left and right sides of the joint body are provided with limit grooves located outside the No. 1 guide groove, and the right side of the inner surface of the limit groove is movably sleeved with a No. 1 push block, and the outer surface of the No. 1 push block is movably connected to the outer surface of the No. 1 sleeve.

[0012] As a preferred technical solution of the utility model, the number of the pushing rings is two, the two pushing rings have the same size, and the two pushing rings are circular in shape.

[0013] As a preferred technical solution of the utility model, a No. 2 guide groove is opened on the right side of the lower surface of the No. 1 push block, and a No. 2 ferrule is movably connected to the inner surface of the No. 2 guide groove.

[0014] As a preferred technical solution of the utility model, the right end of the No. 2 ferrule is movably connected with a No. 2 push block, the upper surface of the No. 2 push block is fixedly connected with a threaded sleeve, and the left side of the lower surface of the threaded sleeve and the right side of the outer surface of the joint body are threadedly sleeved.

[0015] As a preferred technical solution of the utility model, a sleeve block is fixedly sleeved in the middle of the outer surface of the threaded sleeve, the outer shape of the sleeve block is hexagonal, and the outer surface of the sleeve block is rough.

[0016] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0017] 1. The utility model is provided with a hollow groove, a push ring, a connecting rod, a closing plate and a spring. When the right end of the joint body is sleeved with a pipe, the pipe will push open the right side of the pushing ring as a whole, so that the closing plate on the right side releases the blockage of the inside of the joint body, and the closing plate at the other end will seal the inside of the joint body under the pull of the spring, thereby preventing the situation that when only one end of the joint body is sleeved with a pipe, the fluid in the pipe will flow out from the other end of the joint body.

[0018] 2. The utility model provides a No. 1 ferrule, a No. 1 push block, a No. 2 ferrule, a No. 2 push block and a threaded sleeve. When the operator tightens the threaded sleeve, the No. 2 push block will drive the No. 1 ferrule, the No. 1 push block and the No. 2 ferrule to move leftward along the outer surface of the pipe. During this process, the No. 1 push block will push the No. 1 ferrule, so that the cutting edge of the No. 1 ferrule will be embedded in the interior of the pipe. When the No. 1 ferrule cannot continue to move to the left, the No. 2 push block will drive the No. 2 ferrule, so that the No. 2 ferrule starts to move leftward along the inner surface of the No. 2 guide groove. At the same time, the cutting edge of the No. 2 ferrule will also be embedded in the inner surface of the pipe, thereby realizing secondary sealing of the pipe and improving the overall interface sealing of the joint body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 It is a structural schematic diagram of the side surface of the utility model;

[0021] Figure 3 It is a cross-sectional structural schematic diagram of the utility model;

[0022] Figure 4 It is a cross-sectional structural schematic diagram of the connector body of the utility model;

[0023] Figure 5 It is a structural schematic diagram of a No. 1 ferrule of the utility model.

[0024] In the figure: 1. joint body; 2. hollow groove; 3. mounting groove; 4. sliding groove; 5. pushing ring; 6. connecting rod; 7. closing plate; 8. spring; 9. guide groove No. 1; 10. limit groove; 11. ferrule No. 1; 12. pushing block No. 1; 13. guide groove No. 2; 14. ferrule No. 2; 15. pushing block No. 2; 16. threaded sleeve; 17. sleeve block. DETAILED DESCRIPTION

[0025] 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.

[0026] like Figures 1 to 5 As shown, the utility model provides a sleeve pipe joint, including:

[0027] A connector body 1, a hollow groove 2 is provided in the middle of the inner surface of the connector body 1, and an inner cavity of the connector body 1 is provided with mounting grooves 3 located on the left and right sides of the hollow groove 2;

[0028] Sliding grooves 4 are provided on the left and right sides of the joint body 1;

[0029] A closing mechanism, which is arranged inside the joint body 1;

[0030] Among them, the closing mechanism includes a pushing ring 5, the outer surface of the pushing ring 5 is movably connected to the inner surface of the sliding groove 4, the inner surface of the pushing ring 5 is fixedly connected to a connecting rod 6, the left end of the connecting rod 6 passes through the joint body 1 and extends to the interior of the hollow groove 2 and is fixedly connected to a closing plate 7, the outer surface of the connecting rod 6 is movably sleeved with a spring 8, the outer end of the spring 8 is fixedly connected to the inner surface of the mounting groove 3, the other end of the spring 8 is fixedly connected to the outer surface of the closing plate 7, the spring 8 pulls the closing plate 7 as a whole so that the closing plate 7 closes the joint body 1.

[0031] Due to the design of the spring 8, when both ends of the joint body 1 are not sleeved with pipes, the two closing plates 7 will seal the interior of the joint body 1 under the pull of the spring 8, and when only one end of the joint body 1 is sleeved with a pipe, the closing plate 7 at the other end will seal the interior of the joint body 1 under the pulling force of the spring 8 and the fluid pressure from the pipe, thereby preventing the fluid in the pipe from flowing out from the other end of the joint body 1 when only one end of the joint body 1 is sleeved with a pipe.

[0032] Wherein, a No. 1 guide groove 9 is provided on both the left and right sides of the inner surface of the joint body 1 and is located outside the sliding groove 4 , and a No. 1 clamping sleeve 11 is movably sleeved on the inner surface of the No. 1 guide groove 9 .

[0033] Due to the shape design of the No. 1 ferrule 11, when the No. 1 ferrule 11 is compressed and starts to move along the inner surface direction of the No. 1 guide groove 9, the inner surface of the No. 1 ferrule 11 will squeeze the outer surface of the pipe, and finally the outer surface of the pipe will be deformed under the squeezing of the inner surface of the No. 1 ferrule 11, thereby filling the gap between the No. 1 ferrule 11 and the pipe.

[0034] Among them, the left and right sides of the joint body 1 are both provided with a limiting groove 10 located outside the No. 1 guide groove 9, and the right side of the inner surface of the limiting groove 10 is movably sleeved with a No. 1 push block 12, and the outer surface of the No. 1 push block 12 is movably connected to the outer surface of the No. 1 sleeve 11.

[0035] Due to the shape design of the No. 1 push block 12 , when the No. 1 push block 12 starts to move to the left, the No. 1 push block 12 will squeeze the No. 1 card sleeve 11, so that the No. 1 card sleeve 11 starts to slide to the left along the inner surface of the No. 1 guide groove 9 .

[0036] There are two push rings 5 ​​, the two push rings 5 ​​have the same size, and the two push rings 5 ​​are circular in shape.

[0037] Due to the design of the push ring 5 and the connecting rod 6 , when the pipeline squeezes the push ring 5 and causes the push ring 5 to start moving toward the hollow groove 2 , the closing plate 7 will release the blockage of the inside of the joint body 1 driven by the connecting rod 6 and the push ring 5 .

[0038] A second guide groove 13 is provided on the right side of the lower surface of the first push block 12 , and a second clamping sleeve 14 is movably connected to the inner surface of the second guide groove 13 .

[0039] Due to the design of the second guide groove 13 , the sliding direction of the second ferrule 14 is limited.

[0040] Among them, the right end of the No. 2 ferrule 14 is movably connected to the No. 2 push block 15, the upper surface of the No. 2 push block 15 is fixedly connected to the threaded sleeve 16, and the left side of the lower surface of the threaded sleeve 16 is threadedly sleeved with the right side of the outer surface of the joint body 1.

[0041] Due to the design of the No. 2 pusher block 15 and the threaded sleeve 16 , when the threaded sleeve 16 starts to move leftward, the No. 2 pusher block 15 will drive the No. 2 clamping sleeve 14 , so that the No. 2 clamping sleeve 14 starts to slide leftward along the inner surface of the No. 2 guide groove 13 .

[0042] A sleeve block 17 is fixedly sleeved in the middle of the outer surface of the threaded sleeve 16 . The sleeve block 17 has a hexagonal shape and a rough outer surface.

[0043] The design of the sleeve block 17 facilitates the operator to install the sleeve block 17 as a whole using tools such as a wrench.

[0044] The working principle and use process of this utility model:

[0045] First, the operator inserts the entire sleeve 17, the No. 2 sleeve 14, the No. 1 push block 12 and the No. 1 sleeve 11 into the outer surface of the pipe in sequence, and then inserts the pipe into the interior of the joint body 1 through the sliding groove 4. Then the operator inserts the No. 1 push block 12 into the inner surface of the limit groove 10. During this process, the No. 1 sleeve 11 will fit the inner surface of the No. 1 guide groove 9. Then the operator connects the thread of the threaded sleeve 16 with the thread of the joint body 1, and rotates the sleeve 17 to make the threaded sleeve 16 and the No. 2 push block 15 start to move to the left.

[0046] During this process, the movement of the No. 2 push block 15 will cause the No. 2 ferrule 14, the No. 1 push block 12 and the No. 1 ferrule 11 to start moving to the left. Since the joint body 1 and the threaded sleeve 16 are threadedly connected to each other, the No. 1 ferrule 11 will start to slide to the left along the inner surface of the No. 1 guide groove 9. During this process, the inner edge of the No. 1 ferrule 11 will embed into the outer surface of the pipe, so that the No. 1 ferrule 11 is gradually fixed between the joint body 1 and the No. 1 push block 12. At this time, the No. 1 ferrule 11 and the No. 1 push block 12 will stop moving, and the No. 2 push block 15 will continue to push the No. 2 ferrule 14 at this time, so that the No. 2 ferrule 14 begins to embed into the outer surface of the pipe and is fixed between the No. 1 push block 12 and the No. 2 push block 15 under the same principle.

[0047] At the same time, the leftward movement of the No. 1 ferrule 11 and the No. 2 ferrule 14 will also drive the pipeline, so that the left end of the pipeline begins to push the pushing ring 5, and the pushing ring 5 as a whole begins to move to the left along the inner surface of the joint body 1. In this process, the movement of the closing plate 7 will release the closure of the left end of the inside of the joint body 1 by the closing plate 7. When both ends of the joint body 1 as a whole are sleeved with pipelines, the two closing plates 7 will no longer seal the inside of the joint body 1. From then on, the fluid inside the pipeline can flow inside the joint body 1, thereby ensuring the fluid transportation work.

[0048] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A ferrule pipe joint, characterized in that: Included are: A joint body (1), wherein a hollow groove (2) is provided in the middle of the inner surface of the joint body (1), and an inner cavity of the joint body (1) is provided with mounting grooves (3) located on the left and right sides of the hollow groove (2); A sliding groove (4), wherein the sliding groove (4) is provided on the left and right sides of the joint body (1); A closing mechanism, the closing mechanism being arranged inside the joint body (1); The closing mechanism comprises a pushing ring (5), the outer surface of the pushing ring (5) is movably connected to the inner surface of the sliding groove (4), the inner surface of the pushing ring (5) is fixedly connected to a connecting rod (6), the left end of the connecting rod (6) passes through the joint body (1) and extends to the inside of the hollow groove (2) and is fixedly connected to a closing plate (7), the outer surface of the connecting rod (6) is movably sleeved with a spring (8), the outer end of the spring (8) is fixedly connected to the inner surface of the mounting groove (3), the other end of the spring (8) is fixedly connected to the outer surface of the closing plate (7), and the spring (8) pulls the closing plate (7) as a whole so that the closing plate (7) closes the joint body (1).

2. A tube fitting according to claim 1, characterized in that: A No. 1 guide groove (9) located outside the sliding groove (4) is provided on both left and right sides of the inner surface of the joint body (1), and a No. 1 clamping sleeve (11) is movably sleeved on the inner surface of the No. 1 guide groove (9).

3. A tube fitting according to claim 1, characterized in that: The left and right sides of the joint body (1) are both provided with a limiting groove (10) located outside the No. 1 guide groove (9), and the right side of the inner surface of the limiting groove (10) is movably sleeved with a No. 1 push block (12), and the outer surface of the No. 1 push block (12) is movably connected to the outer surface of the No. 1 clamping sleeve (11).

4. A tube fitting according to claim 1, characterized in that: The number of the pushing rings (5) is two, the two pushing rings (5) have the same size, and the two pushing rings (5) are circular in shape.

5. A tube fitting according to claim 3, characterized in that: A No. 2 guide groove (13) is provided on the right side of the lower surface of the No. 1 push block (12), and a No. 2 clamping sleeve (14) is movably connected to the inner surface of the No. 2 guide groove (13).

6. A tube fitting according to claim 5, characterized in that: The right end of the No. 2 ferrule (14) is movably connected to a No. 2 pusher block (15), the upper surface of the No. 2 pusher block (15) is fixedly connected to a threaded sleeve (16), and the left side of the lower surface of the threaded sleeve (16) is threadedly sleeved with the right side of the outer surface of the joint body (1).

7. A tube fitting according to claim 6, characterized in that: A sleeve block (17) is fixedly sleeved in the middle of the outer surface of the threaded sleeve (16); the sleeve block (17) has a hexagonal shape and a rough outer surface.

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