Running type expansion joint

Abstract

The union type expansion joint comprises a soft body, two pipe joints, two sleeves and two locking caps, the soft body and the pipe joints are both tubular, the two pipe joints are arranged at two openings of the soft body respectively, the soft body comprises annular fixing ends arranged at the openings, the pipe joints comprise abutting ends abutting against the fixing ends, and the two sleeves are sleeved with the two locking caps. A step face is arranged on the outer wall of the pipe joint, the sleeve is arranged on the soft body in a sleeving mode, the inner diameter of the sleeve is smaller than the outer diameter of the fixed end, external threads are arranged on the side, close to the fixed end, of the outer wall of the sleeve, the locking cap is arranged on the abutting end, the fixed end and the sleeve in a sleeving mode at the same time, and internal threads matched with the external threads in a threaded mode are arranged on the inner wall of the locking cap. According to the pipeline locking device, the problems of displacement, stress, vibration and the like caused by vibration of a pipeline can be solved while the pipeline locking device is convenient to disassemble and assemble, the pipeline displacement and deviation can be compensated, and thermal expansion and cold contraction caused by temperature change can be compensated.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline joints, and in particular relates to a union-type expansion joint. Background Art

[0002] Adjacent pipes are usually connected by joints, which include live joints (also known as unions), expansion joints with expansion joints, etc.

[0003] Existing flexible joints are usually made of metal, plastic and other materials as a whole, which is convenient for installation and disassembly, but they do not have the functions of compensating for the mutual displacement between pipes, reducing vibration, and silencing. The expansion joint has the above functions, but the expansion joint and the pipe are usually connected by a flange, which makes it difficult to quickly assemble and disassemble the expansion joint and the pipe, making it inconvenient for later maintenance or replacement, and the manufacturing cost is relatively high. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a union-type expansion joint which is convenient for assembly and disassembly and has the functions of compensating for mutual displacement between pipelines, reducing vibration, and silencing noise.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a union-type expansion joint, comprising a soft body, two pipe joints, two sleeves and two locking caps, the soft body and the pipe joints are both tubular, and the two pipe joints are respectively arranged at the two openings of the soft body, the soft body includes an annular fixed end arranged at the opening, the pipe joint includes an abutting end abutting the fixed end, the outer wall of the pipe joint is provided with a step surface, the sleeve is sleeved on the soft body and the inner diameter of the sleeve is smaller than the outer diameter of the fixed end, the outer wall of the sleeve is provided with an external thread on the side close to the fixed end, the locking cap is simultaneously sleeved on the abutting end, the fixed end and the sleeve, the inner wall of the locking cap is provided with an internal thread that can cooperate with the external thread, and the end of the locking cap away from the sleeve is provided with a bent end that forms a limit with the step surface.

[0006] By adopting the above scheme, the utility model can solve the problems of displacement, stress, vibration and the like caused by pipeline vibration while facilitating disassembly and assembly, can compensate for pipeline displacement and deviation, and can compensate for thermal expansion and contraction caused by temperature changes.

[0007] The preferred soft body is made of soft UPVC rubber plus ion cloth composite technology, which has high strength, so that the soft body can better resolve the problem caused by pipeline vibration, and the fixed end has good flexibility, and the sealing effect is good after the utility model is assembled. The pipe joint is made of UPVC plastic, which is convenient for bonding.

[0008] As a further configuration of the utility model, a ring-shaped blocking end is provided on the inner wall of the pipe joint close to the soft body, the axes of the blocking end and the abutting end coincide, the inner diameter of the pipe joint is larger than the inner diameter of the soft body, and the inner diameter of the blocking end is larger than the inner diameter of the soft body.

[0009] The above solution can prevent the pipeline from being too deep, facilitate the control of the bonding position of the pipeline and the pipe joint, and at the same time keep the inner diameter of the software roughly consistent with the inner diameter of the pipeline, so that the liquid flows more smoothly.

[0010] As a further configuration of the utility model, the side wall in the middle of the soft body bulges away from the axis of the soft body to form a drum-shaped enlarged end.

[0011] By adopting the above scheme, when relative displacement occurs between the pipes, the utility model will produce certain bending, squeezing or pulling. The existence of the enlarged end can better resolve the above deformation and extend the service life of the software.

[0012] As a further configuration of the utility model, there are two enlarged ends which are symmetrically arranged, and the symmetry lines of the two enlarged ends are perpendicular to the axis of the soft body.

[0013] The above solution can better solve the pipeline displacement problem.

[0014] As a further configuration of the utility model, the maximum outer diameter of the enlarged end is less than or equal to the inner diameter of the locking cap.

[0015] By adopting the above scheme, the size of the expanded end is controlled, which facilitates the assembly of the utility model.

[0016] As a further configuration of the utility model, the outer wall of the soft body protrudes in a direction away from the axis of the soft body to form an annular reinforcement end, and the reinforcement end is arranged between the two enlarged ends.

[0017] By adopting the above solution, the connection strength between the two enlarged ends is increased.

[0018] As a further configuration of the utility model, the cross section of the outer wall of the reinforcement end along the axis of the soft body is in an arc shape.

[0019] The above solution is adopted to prevent cracks from appearing on the reinforcement end during the use of the utility model.

[0020] As a further configuration of the utility model, the outer wall of the locking cap is provided with a plurality of convex strips 1 arranged along the circumference of the locking cap, and all the convex strips 1 are parallel to each other.

[0021] The above solution makes it convenient for installers to rotate the locking cap.

[0022] As a further configuration of the utility model, the outer wall of the sleeve is provided with a plurality of convex strips 2 arranged along the circumference of the sleeve, and all the convex strips 2 are parallel to each other.

[0023] The above solution makes it convenient for the installer to keep the sleeve fixed during the installation process.

[0024] The utility model is further described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Attached Figure 1 It is a schematic diagram of a specific embodiment of the utility model;

[0026] Attached Figure 2 It is a schematic cross-sectional view of a specific embodiment of the utility model.

[0027] Software 1, fixed end 11, expanded end 12, reinforced end 13, pipe joint 2, abutting end 21, step surface 22, blocking end 23, sleeve 3, external thread 31, convex strip 2 32, locking cap 4, internal thread 41, bent end 42, convex strip 1 43. DETAILED DESCRIPTION

[0028] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0029] In the description of the present utility model, it should be noted that, unless otherwise specified, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicating the orientation or position relationship in the description are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0030] The specific implementation of the present invention is as follows Figure 1-2 shown.

[0031] A union-type expansion joint comprises a body 1, two pipe joints 2, two sleeves 3 and two locking caps 4. The body 1 and the pipe joints 2 are both tubular, and the two pipe joints 2 are respectively arranged at two openings of the body 1. The body 1 comprises an annular fixed end 11 arranged at the opening, the pipe joint 2 comprises an abutting end 21 abutting against the fixed end 11, and the outer wall of the pipe joint 2 is provided with a step surface 22. The sleeve 3 is sleeved on the body 1 and the inner diameter of the sleeve 3 is smaller than the outer diameter of the fixed end 11. The outer wall of the sleeve 3 is provided with an external thread 31 on a side close to the fixed end 11. The locking cap 4 is sleeved on the abutting end 21, the fixed end 11 and the sleeve 3 at the same time. The inner wall of the locking cap 4 is provided with an internal thread 41 that can be threadably matched with the external thread 31, and the end of the locking cap 4 away from the sleeve 3 is provided with a bent end 42 that forms a limit with the step surface 22.

[0032] This embodiment can resolve problems such as displacement, stress, vibration, etc. caused by pipeline vibration while facilitating disassembly and assembly, and can compensate for pipeline displacement and deviation, and can compensate for thermal expansion and contraction caused by temperature changes.

[0033] In this embodiment, the soft body 1 is made of soft UPVC rubber and ion cloth composite technology, which has high strength, so that the soft body 1 can better resolve the problem caused by pipeline vibration, and the fixed end 11 has good flexibility. After the assembly of this embodiment, the sealing effect is good. The pipe joint 2 is made of UPVC plastic, which is convenient for bonding.

[0034] An annular blocking end 23 is provided on the inner wall of the pipe joint 2 near the soft body 1, the axes of the blocking end 23 and the abutting end 21 coincide, the inner diameter of the pipe joint 2 is larger than the inner diameter of the soft body 1, and the inner diameter of the blocking end 23 is larger than the inner diameter of the soft body 1. The above arrangement can prevent the pipeline from being inserted too deep, facilitate the control of the bonding position between the pipeline and the pipe joint 2, and at the same time keep the inner diameter of the soft body 1 roughly consistent with the inner diameter of the pipeline, so that the liquid flows more smoothly.

[0035] The side wall in the middle of the soft body 1 bulges away from the axis of the soft body 1 to form a drum-shaped enlarged end 12. There are two enlarged ends 12 and they are symmetrically arranged, and the symmetry lines of the two enlarged ends 12 are perpendicular to the axis of the soft body 1. When relative displacement occurs between the pipes, this embodiment will produce a certain amount of bending, squeezing or pulling. The presence of the enlarged end 12 can better resolve the above deformation and extend the service life of the soft body 1.

[0036] The maximum outer diameter of the enlarged end 12 is less than or equal to the inner diameter of the locking cap 4. The size of the enlarged end 12 is controlled to facilitate assembly of the present embodiment.

[0037] The outer wall of the soft body 1 protrudes in a direction away from the axis of the soft body 1 to form a ring-shaped reinforcement end 13, and the reinforcement end 13 is arranged between the two enlarged ends 12. The connection strength between the two enlarged ends 12 is increased. The cross section of the outer wall of the reinforcement end 13 along the axis of the soft body 1 is in an arc shape. The reinforcement end 13 is prevented from cracking during use of the present embodiment.

[0038] The outer wall of the locking cap 4 is provided with a plurality of convex strips 43 arranged along the circumference of the locking cap 4, and all the convex strips 43 are parallel to each other. The convex strips 43 facilitate the installation personnel to rotate the locking cap 4.

[0039] The outer wall of the sleeve 3 is provided with a plurality of convex strips 32 arranged along the circumference of the sleeve 3, and all the convex strips 32 are parallel to each other. The convex strips 32 facilitate the installation personnel to keep the sleeve 3 fixed during the installation process.

[0040] The present invention is not limited to the above-mentioned specific implementation modes. A person skilled in the art may adopt other various specific implementation modes to implement the present invention according to the contents disclosed in the present invention, or any design structure and concept of the present invention with simple changes or modifications shall fall within the protection scope of the present invention.

Claims

1. A union type expansion joint, characterized in that: It includes a soft body, two pipe joints, two sleeves and two locking caps, the soft body and the pipe joints are both tubular, the two pipe joints are respectively arranged at the two openings of the soft body, the soft body includes an annular fixed end arranged at the opening, the pipe joint includes an abutting end abutting the fixed end, the outer wall of the pipe joint is provided with a step surface, the sleeve is sleeved on the soft body and the inner diameter of the sleeve is smaller than the outer diameter of the fixed end, the outer wall of the sleeve is provided with an external thread on the side close to the fixed end, the locking cap is simultaneously sleeved on the abutting end, the fixed end and the sleeve, the inner wall of the locking cap is provided with an internal thread that can cooperate with the external thread, and the end of the locking cap away from the sleeve is provided with a bent end that forms a limit with the step surface.

2. The Union type expansion joint according to claim 1, characterized in that: An annular blocking end is provided on one side of the inner wall of the pipe joint close to the soft body, the axes of the blocking end and the abutting end coincide, the inner diameter of the pipe joint is larger than the inner diameter of the soft body, and the inner diameter of the blocking end is larger than the inner diameter of the soft body.

3. A Union type expansion joint according to claim 2, characterized in that: The side wall in the middle of the soft body bulges away from the axis of the soft body to form a drum-shaped enlarged end.

4. The Union type expansion joint according to claim 3, characterized in that: There are two enlarged ends which are symmetrically arranged, and the symmetry lines of the two enlarged ends are perpendicular to the axis of the soft body.

5. The Union type expansion joint according to claim 4, characterized in that: The maximum outer diameter of the enlarged end is less than or equal to the inner diameter of the locking cap.

6. The Union type expansion joint according to claim 5, characterized in that: The outer wall of the soft body protrudes in a direction away from the axis of the soft body to form an annular reinforcement end, and the reinforcement end is arranged between the two enlarged ends.

7. The Union type expansion joint according to claim 6, characterized in that: The cross section of the outer wall of the reinforcement end along the axis of the soft body is in an arc shape.

8. The Union type expansion joint according to claim 7, characterized in that: The outer wall of the locking cap is provided with a plurality of convex strips 1 arranged along the circumference of the locking cap, and all the convex strips 1 are parallel to each other.

9. The Union type expansion joint according to claim 8, characterized in that: The outer wall of the sleeve is provided with a plurality of convex strips 2 arranged along the circumference of the sleeve, and all the convex strips 2 are parallel to each other.

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