Non-welding pipeline joint

Abstract

The utility model discloses a non-welding pipeline joint which comprises a sealing sleeve and two crimping sleeves, an annular groove is formed in the middle of the sealing sleeve, and the two ends of the sealing sleeve are arranged in a first step mode. The interiors of the two crimping sleeves are arranged in a second step mode, the two crimping sleeves are arranged on the sealing sleeve in a sliding and sleeving mode, and each first step is fixedly connected with the corresponding second step through a buckle structure. Through the application of the non-welding pipeline joint, the sealing sleeve and the crimping sleeve can be fixed through the buckle structure, and the sealing sleeve and the crimping sleeve are prevented from falling off.

Description

Technical Field

[0001] This utility model relates to the technical field of pipe connection and other related fields, and in particular to a non-welded pipe joint. Background Technology

[0002] Currently, most axial compression pipe connection methods use a certain axial thrust to push the crimping sleeve along the axial direction of the sealing sleeve. The sealing sleeve, crimping sleeve, and pipe are radially clamped through the elastic-plastic deformation of the sealing sleeve, crimping sleeve, and pipe during the compression process. However, the sealing sleeve and crimping sleeve are easy to fall off after sealing. Utility Model Content

[0003] In view of this, and to solve the above problems, the purpose of this utility model is to provide a non-welded pipe joint, comprising:

[0004] Sealing sleeve, two crimp sleeves;

[0005] The sealing sleeve has a ring-shaped groove in the middle, and both ends of the sealing sleeve are stepped.

[0006] Both of the aforementioned compression sleeves have a second step inside, and the two compression sleeves are slidably fitted onto the sealing sleeve, with each first step and each second step being fixedly connected by a snap-fit ​​structure.

[0007] In the aforementioned non-welded pipe joint, the first step includes a first stepped surface, a second stepped surface, and a third stepped surface connected in sequence; the second step includes a fourth stepped surface connected in sequence; and the snap-fit ​​structure includes a recess disposed on the first stepped surface, the recess being away from the second stepped surface, and a protrusion disposed on the fourth stepped surface, the protrusion being away from the fifth stepped surface, the protrusion being snapped into the recess.

[0008] In the aforementioned non-welded pipe joint, the longitudinal cross-section of the recess is either trapezoidal or rectangular, and the cross-section of the protrusion is either trapezoidal or rectangular.

[0009] The aforementioned non-welded pipe joint, wherein the snap-fit ​​structure includes: a groove disposed on the third stepped surface, the groove being close to the second stepped surface; a snap-fit ​​block disposed on the fourth stepped surface, the snap-fit ​​block being away from the fifth stepped surface; and the snap-fit ​​block being engaged with the groove.

[0010] In the aforementioned non-welded pipe joint, the longitudinal cross-section of the groove is either trapezoidal or rectangular, and the longitudinal cross-section of the locking block is either trapezoidal or rectangular.

[0011] In the aforementioned non-welded pipe joint, the sealing sleeve is fitted onto the pipe, and the inner wall of the sealing sleeve protrudes outward with a plurality of sealing teeth, which are engaged in the grooves of the pipe.

[0012] In the aforementioned non-welded pipe joint, the longitudinal section of the sealing tooth is either trapezoidal or rectangular, and the longitudinal section of the groove in the pipe is either trapezoidal or rectangular.

[0013] The positive effects of the above technical solution compared with the existing technology are:

[0014] By applying this utility model, a non-welded pipe joint is provided. The sealing sleeve and the crimping sleeve can be fixed together by a snap-fit ​​structure to prevent them from falling off. Furthermore, the sealing sleeve and the pipe are fixed together by sealing teeth, which effectively makes the sealing sleeve and the pipe deform and seal. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a non-welded pipe joint according to the present invention.

[0016] Figure 2 This is a partial schematic diagram of a non-welded pipe joint according to the present invention.

[0017] 1. Sealing sleeve; 2. Press-fit sleeve; 3. Groove; 4. First stepped surface; 5. Second stepped surface; 6. Third stepped surface; 7. Fourth stepped surface; 8. Fifth stepped surface; 9. Sixth stepped surface; 10. Recess; 11. Protrusion; 12. Groove; 13. Locking block; 14. Pipe; 15. Sealing tooth. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0019] The structures, proportions, and sizes illustrated in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art. They are not intended to limit the scope of this invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of this invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0020] like Figures 1 to 2As shown, a preferred embodiment of a non-welded pipe fitting is illustrated, comprising: a sealing sleeve 1 and two crimping sleeves 2.

[0021] The sealing sleeve 1 has a groove 3 arranged in an annular shape in the middle, and both ends of the sealing sleeve 1 are arranged in a first step; the interior of the two pressing sleeves 2 is arranged in a second step, the two pressing sleeves 2 are slidably fitted on the sealing sleeve 1, and each first step and each second step are fixedly connected by a snap-fit ​​structure.

[0022] In practical use, a certain axial thrust is applied to push the two crimping sleeves 2 along the axial direction of the sealing sleeve 1. Since the inner diameter of the crimping sleeve 2 is smaller than the outer ring diameter of the sealing sleeve 1, the axial displacement of the crimping sleeve 2 causes mechanical interference to compress the outer wall of the sealing sleeve 1, resulting in deformation of the sealing sleeve 1 and compression of the pipe. During the entire deformation process, the sealing sleeve 1, crimping sleeve 2, and pipe 14 undergo elastoplastic deformation. Through deformation, a tight connection between the three can be achieved, achieving a sealing effect. Furthermore, after sealing, the sealing sleeve 1 and crimping sleeve 2 are fixed together by a snap-fit ​​structure, making them less prone to falling off.

[0023] Based on the above, this utility model also has the following embodiments:

[0024] Furthermore, a non-welded pipe joint is provided, wherein the first step includes a first step surface 4, a second step surface 5 and a third step surface 6 connected in sequence, and the second step includes a fourth step surface 7, a fourth step surface 8 and a fifth step surface 9 connected in sequence.

[0025] Furthermore, a non-welded pipe fitting includes a snap-fit ​​structure comprising: a recess 10 on a first stepped surface 4, the recess 10 being away from the second stepped surface 5; and a protrusion 11 on a fourth stepped surface 7, the protrusion 11 being away from the fifth stepped surface 8. The protrusion 11 is engaged with the recess 10. Specifically, during axial displacement of the crimp sleeve 2, the protrusion 11 of the crimp sleeve 2 engages with the recess 10 of the sealing sleeve 1, thereby achieving a fixing effect and preventing the crimp sleeve 2 and the sealing sleeve 1 from falling off.

[0026] Furthermore, in a non-welded pipe joint, the longitudinal cross-section of the recess 10 is either trapezoidal or rectangular, and the cross-section of the protrusion 11 is either trapezoidal or rectangular. Specifically, the recess 10 can be rectangular, trapezoidal, triangular, etc., and the corresponding protrusion 11 is also rectangular, trapezoidal, triangular, etc., to achieve the effect of the protrusion 11 being engaged with the recess 10.

[0027] Furthermore, a non-welded pipe fitting includes a snap-fit ​​structure comprising: a groove 12 disposed on a third stepped surface, the groove 12 being close to a second stepped surface 5; and a snap-fit ​​block 13 disposed on a fourth stepped surface 7, the snap-fit ​​block 13 being away from a fifth stepped surface 8, the snap-fit ​​block 13 being engaged with the groove 3. Specifically, during axial displacement of the crimp sleeve 2, the snap-fit ​​block 13 of the crimp sleeve 2 engages with the groove 12 of the sealing sleeve 1, thereby achieving a fixing effect and preventing the crimp sleeve 2 and the sealing sleeve 1 from falling off.

[0028] Furthermore, in a non-welded pipe joint, the longitudinal cross-section of the groove 12 is either trapezoidal or rectangular, and the longitudinal cross-section of the locking block 13 is either trapezoidal or rectangular. Specifically, the groove 12 can be set as rectangular, trapezoidal, triangular, etc., and the locking block 13 is correspondingly set as rectangular, trapezoidal, triangular, etc., so that the locking block 13 can be locked in the groove 12, thereby achieving the function of fixing the crimp sleeve 2 and the sealing sleeve 1 and preventing it from falling off.

[0029] Furthermore, in a non-welded pipe joint, a sealing sleeve 1 is fitted onto a pipe 14, and the inner wall of the sealing sleeve 1 has several sealing teeth 15 protruding outward, which are engaged in grooves within the pipe 14. Specifically, the inner wall of the sealing sleeve 1 in this device has two sealing teeth 15, and the sealing sleeve 1 achieves a seal by deforming the pipe 14 through the two sealing teeth 15.

[0030] Furthermore, in a non-welded pipe joint, the longitudinal section of the sealing tooth 15 is either trapezoidal or rectangular, and the longitudinal section of the groove on the pipe 14 is either trapezoidal or rectangular. Specifically, the shape of the groove on the outer wall of the pipe 14 corresponds to the shape of the sealing tooth 15, and can be either trapezoidal, rectangular, or triangular, thereby enabling the sealing sleeve 1 to deform and seal with the pipe 14.

[0031] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A non-welded pipe joint, characterized in that, include: Sealing sleeve, two crimp sleeves; The sealing sleeve has a ring-shaped groove in the middle, and both ends of the sealing sleeve are stepped. Both of the aforementioned compression sleeves have a second step inside, and the two compression sleeves are slidably fitted onto the sealing sleeve, with each first step and each second step being fixedly connected by a snap-fit ​​structure.

2. A non-welded pipe joint according to claim 1, characterized in that, The first step includes a first step surface, a second step surface, and a third step surface connected in sequence, and the second step includes a fourth step surface, a fourth step surface, and a fifth step surface connected in sequence.

3. A non-welded pipe joint according to claim 2, characterized in that, The snap-fit ​​structure includes: a recess on the first stepped surface, the recess being away from the second stepped surface; and a protrusion on the fourth stepped surface, the protrusion being away from the fifth stepped surface; the protrusion is snapped into the recess.

4. A non-welded pipe joint according to claim 3, characterized in that, The longitudinal cross-section of the depression is either trapezoidal or rectangular, and the cross-section of the protrusion is either trapezoidal or rectangular.

5. A non-welded pipe joint according to claim 2, characterized in that, The buckle structure includes: a groove disposed on the third stepped surface, the groove being close to the second stepped surface; and a locking block disposed on the fourth stepped surface, the locking block being away from the fifth stepped surface, the locking block being engaged in the groove.

6. A non-welded pipe joint according to claim 5, characterized in that, The longitudinal section of the groove is either trapezoidal or rectangular, and the longitudinal section of the card block is either trapezoidal or rectangular.

7. A non-welded pipe joint according to claim 1, characterized in that, The sealing sleeve is fitted onto the pipe, and the inner wall of the sealing sleeve has a plurality of sealing teeth protruding outward, which are engaged in the grooves of the pipe.

8. A non-welded pipe joint according to claim 7, characterized in that, The longitudinal section of the sealing tooth is either trapezoidal or rectangular, and the longitudinal section of the groove in the pipe is either trapezoidal or rectangular.

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