A union maintenance device

Abstract

The present invention relates to the technical field of pipelines, and discloses a maintenance device for a union joint, which includes a seat body, a liquid tank arranged on the seat body, a first cylinder barrel arranged on the seat body, a first piston slidably arranged in the first cylinder barrel and enclosing a first space with the bottom wall of the first cylinder barrel, a chuck arranged on the first piston and used for clamping a pipe body, a liquid supply pipeline respectively communicating the first space and the liquid tank, a liquid return pipeline respectively communicating the first space and the liquid tank, a stop valve arranged on the liquid return pipeline, a first one-way valve arranged at the inlet in the liquid supply pipeline and allowing the liquid in the liquid tank to flow into the liquid supply pipeline, a second one-way valve arranged at the outlet of the liquid supply pipeline and allowing the liquid in the liquid supply pipeline to flow into the liquid tank, and a driving mechanism for driving the liquid to sequentially pass through the first one-way valve and the second one-way valve. The present invention can conveniently expand two pipe bodies to replace the O-ring in the union joint, and can fundamentally solve the problem of air leakage in the union joint.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline fittings, and particularly to a maintenance device for a union joint. Background Art

[0002] A union joint is a commonly used pipeline connector that facilitates installation and disassembly.

[0003] According to the statistics of air leakage over the years, the air leakage caused by the aging or damage of the O-ring rubber gasket inside the union joint accounts for a relatively large proportion. Once the O-ring rubber gasket ages or is damaged, it is bound to cause air leakage due to the loose sealing of the pipeline connection.

[0004] Normally, the service life of the O-ring rubber gasket inside the union joint is relatively long, but it is prone to aging or damage under the influence of the environment. Common environmental factors include atmospheric corrosion, high temperature, high humidity, unstable pressure, chemicals transported in the pipeline, incorrect construction, and natural disasters, etc.

[0005] Currently, when the air leakage is caused by the aging or damage of the O-ring rubber gasket, the general treatment methods include brush glue treatment, wrapping with butter cloth, filling with raw tape, or cutting off the pipe and re-welding, etc. Among them, the methods of brush glue treatment, wrapping with butter cloth, and filling with raw tape cannot fundamentally solve the problem, while the method of cutting off the pipe and re-welding is costly.

[0006] Therefore, the most direct and effective method should be to directly replace the O-ring rubber gasket inside the union joint. However, it is difficult to replace the O-ring rubber gasket inside the union joint by hand operation, and there is no relevant tool in the prior art to assist in replacing the O-ring rubber gasket inside the union joint. Summary of the Invention

[0007] The object of the present invention is to provide a maintenance device for a union joint that can assist in replacing the O-ring rubber gasket inside the union joint.

[0008] To achieve the above object, the present invention provides a maintenance device for a union joint, including a seat body, a liquid tank provided on the seat body, a first cylinder provided on the seat body, a first piston slidably arranged in the first cylinder and enclosing a first space with the bottom wall of the first cylinder, a chuck provided on the first piston and used for clamping a pipe body, a liquid supply pipeline respectively communicating the first space and the liquid tank, a liquid return pipeline respectively communicating the first space and the liquid tank, a stop valve provided on the liquid return pipeline, a first one-way valve provided at the inlet of the liquid supply pipeline and allowing the liquid in the liquid tank to flow into the liquid supply pipeline, a second one-way valve provided at the outlet of the liquid supply pipeline and allowing the liquid in the liquid supply pipeline to flow into the liquid tank, and a driving mechanism for driving the liquid to sequentially pass through the first one-way valve and the second one-way valve.

[0009] Further, it further includes a cylinder body arranged along a predetermined direction; the chuck is arranged at one end of the cylinder body, the liquid tank is arranged at the other end of the cylinder body, the first cylinder barrel is arranged inside the cylinder body, and the liquid supply pipeline and the liquid return pipeline are respectively arranged inside the cylinder body.

[0010] Further, the driving mechanism includes a hinge seat arranged on the outer side surface of the cylinder body, a handle hinged on the hinge seat, a second piston with one end hinged on the handle and arranged at an interval from the hinge seat, a second cylinder barrel arranged on the outer side surface of the cylinder body, a second piston slidably arranged inside the second cylinder barrel and enclosing a second space with the bottom wall of the second cylinder barrel, a push rod with one end arranged on the handle and the other end connected to the second piston, and a communication pipeline respectively communicating the second space and the liquid supply pipeline.

[0011] Further, the communication position of the communication pipeline and the liquid supply pipeline is between the first one-way valve and the second one-way valve.

[0012] Further, one end of the handle is hinged on the hinge seat, and the other end of the handle extends towards the direction of the seat body.

[0013] Further, the liquid tank has a columnar structure.

[0014] Further, the chuck includes a base connected to the first piston, a first clamping block arranged on the base, and a second clamping block arranged on the base and arranged at an interval from the first clamping block; a clamping space for accommodating the pipe body is formed between the first clamping block and the second clamping block.

[0015] Further, a sliding groove is arranged on the base, the second clamping block is slidably arranged in the sliding groove, one end of the sliding groove is close to the first clamping block, and the other end of the sliding groove extends in a direction away from the first clamping block; the union maintenance device further includes a locking assembly for locking the second clamping block on the sliding groove.

[0016] Further, a strip-shaped hole penetrating through the base and extending along with the sliding groove is formed on the bottom wall of the sliding groove; the locking assembly includes a bolt for sequentially passing through the second clamping block and the strip-shaped hole and a nut for screwing onto the part of the bolt protruding outside the strip-shaped hole.

[0017] Further, it further includes a first gasket and a second gasket which are both integrally formed of soft materials; the first gasket is arranged in the clamping space and on the first clamping block, and the second gasket is arranged in the clamping space and on the second clamping block.

[0018] Compared with the prior art, the beneficial effects of a union maintenance device according to an embodiment of the present invention are as follows:

[0019] The union joint maintenance device according to the embodiment of the present invention can conveniently expand two pipe bodies to replace the O-ring in the union joint, fundamentally solve the problem of air leakage in the union joint, and extend the service life of the union joint. Brief Description of the Drawings

[0020] Figure 1 It is a structural diagram of the union joint maintenance device according to the embodiment of the present invention.

[0021] Figure 2 It is a structural diagram of the cylinder body of the union joint maintenance device according to the embodiment of the present invention.

[0022] Figure 3 It is a top view structural diagram of the chuck of the union joint maintenance device according to the embodiment of the present invention.

[0023] In the figure, 1, seat body; 2, liquid tank; 3, first cylinder; 4, first piston; 5, chuck; 6, liquid supply pipeline; 7, liquid return pipeline; 8, first one-way valve; 9, second one-way valve; 10, cylinder body; 11, hinge seat; 12, handle; 13, second piston; 14, second cylinder; 15, stop valve; 16, connecting pipeline; 17, base; 18, first clamping block; 19, second clamping block; 20, bolt; 21, nut; 22, first gasket; 23, second gasket. Detailed Embodiments

[0024] The following combines the drawings and embodiments to further describe in detail the specific embodiments of the present invention. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0025] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0026] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more, unless otherwise specifically defined.

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0029] See also Figures 1 to 3 A preferred embodiment of the present invention is a living joint maintenance device, comprising a seat body 1, a liquid tank 2 arranged on the seat body 1, a first cylinder 3 arranged on the seat body 1, a first piston 4 slidably arranged in the first cylinder 3 and enclosed with the bottom wall of the first cylinder 3 to form a first space, a clamp 5 arranged on the first piston 4 and used to clamp the tube body, a liquid supply pipeline 6 respectively connecting the first space and the liquid tank 2, a liquid return pipeline 7 respectively connecting the first space and the liquid tank 2, a stop valve 15 arranged on the liquid return pipeline 7, a first one-way valve 8 arranged at the inlet of the liquid supply pipeline 6 and allowing the liquid in the liquid tank 2 to flow into the liquid supply pipeline 6, a second one-way valve 9 arranged at the outlet of the liquid supply pipeline 6 and allowing the liquid in the liquid supply pipeline 6 to flow into the liquid tank 2, and a driving mechanism for driving the liquid to pass through the first one-way valve 8 and the second one-way valve 9 in sequence.

[0030] Before use, the thread at the flexible joint needs to be loosened first, and then the two pipe bodies connected by the flexible joint are spread apart using the flexible joint maintenance device of this embodiment.

[0031] During use, the seat body 1 is fixed relative to one of the pipe bodies, the chuck 5 is clamped on the other pipe body, and then the driving mechanism operates. The liquid in the liquid tank 2 flows through the liquid supply pipeline 6 to the first space, and the first piston 4 is lifted, thereby driving the pipe body clamped by the chuck 5 to move away from the seat body 1, that is, the two pipe bodies are separated. The first piston 4 remains in this position so that the O-ring in the union is exposed, assisting the operator to replace the O-ring.

[0032] After use, the stop valve 15 is opened, and the liquid in the first space flows into the liquid tank 2. The piston retracts, driving the two pipe bodies to approach each other, and then the union is tightened to complete the maintenance of the union.

[0033] The union maintenance device of this embodiment can conveniently separate the two pipe bodies to replace the O-ring in the union, fundamentally solve the problem of air leakage in the union, and extend the service life of the union. This embodiment is particularly applicable to situations where the working conditions are restricted, such as at high altitudes or when the pipe body is too close to the wall, and it is impossible to directly operate the separation of the pipe body well.

[0034] Furthermore, in one embodiment, please refer to Figures 1 to 3 , and it further includes a cylinder body 10 arranged along a predetermined direction; the chuck 5 is arranged at one end of the cylinder body 10, the liquid tank 2 is arranged at the other end of the cylinder body 10, the first cylinder barrel 3 is arranged inside the cylinder body 10, and the liquid supply pipeline 6 and the liquid return pipeline 7 are respectively located inside the cylinder body 10.

[0035] During use of this embodiment, the predetermined direction is set parallel to the pipe body, so that when the first piston 4 moves, it can drive the pipe body to translate along the extension direction of the pipe body. At the same time, the cylinder body 10 is provided to protect the liquid supply pipeline 6 and the liquid return pipeline 7.

[0036] Furthermore, in one embodiment, please refer to Figures 1 to 3 , the driving mechanism includes a hinge seat 11 arranged on the outer side surface of the cylinder body 10, a handle 12 hinged on the hinge seat 11, a second piston 13 with one end hinged on the handle 12 and spaced from the hinge seat 11, a second cylinder barrel 14 arranged on the outer side surface of the cylinder body 10, a second piston 13 sliding in the second cylinder barrel 14 and enclosing a second space with the bottom wall of the second cylinder barrel 14, a push rod with one end arranged on the handle 12 and the other end connected to the second piston 13, and a communication pipeline 16 respectively communicating the second space and the liquid supply pipeline 6.

[0037] When it is necessary to expand two pipe bodies, lift the handle 12. The handle 12 rotates around the hinge seat 11, driving the second piston 13 to move within the second cylinder 14. The volume of the second space increases, thereby reducing the internal pressure of the liquid supply pipeline 6. A pressure difference is formed between the liquid tank 2 and the liquid supply pipeline 6. Under the action of the pressure difference, the liquid in the liquid tank 2 flows into the liquid supply pipeline 6. Then, press the handle 12. The volume of the second space decreases, increasing the internal pressure of the liquid supply pipeline 6. A pressure difference is formed between the liquid supply pipeline 6 and the first space. Under the action of the pressure difference, the liquid in the liquid supply pipeline 6 flows into the first space, driving the first piston 4 to jack up the pipe body upward.

[0038] In this embodiment, the driving mechanism is easy to operate and can jack up the two pipe bodies conveniently. It is especially suitable for situations where the operating conditions are restricted, such as at high altitudes or when the pipe bodies are too close to the wall, and it is impossible to directly operate the separation of the pipe bodies well.

[0039] Further, in one embodiment, please refer to Figures 1 to 3 , the connection position between the communication pipeline 16 and the liquid supply pipeline 6 is between the first one-way valve 8 and the second one-way valve 9.

[0040] Further, in one embodiment, please refer to Figures 1 to 3 , one end of the handle 12 is hinged to the hinge seat 11, and the other end of the handle 12 extends towards the direction of the seat body 1.

[0041] Further, in one embodiment, please refer to Figures 1 to 3 , the liquid tank 2 has a columnar structure.

[0042] Further, in one embodiment, please refer to Figures 1 to 3 , the chuck 5 includes a base 17 connected to the first piston 4, a first clamping block 18 provided on the base 17, and a second clamping block 19 provided on the base 17 and spaced from the first clamping block 18; a clamping space for accommodating the pipe body is formed between the first clamping block 18 and the second clamping block 19.

[0043] Further, in one embodiment, please refer to Figures 1 to 3 , a chute is provided on the base 17, the second clamping block 19 is slidably arranged in the chute, one end of the chute is close to the first clamping block 18, and the other end of the chute extends in a direction away from the first clamping block 18; the union maintenance device further includes a locking assembly for locking the second clamping block 19 on the chute. In this embodiment, the chute and the locking assembly are provided, and the distance between the first clamping block 18 and the second clamping block 19 can be adjusted, so that the chuck 5 can adapt to pipe bodies with different diameters.

[0044] Further, in one embodiment, please refer to Figures 1 to 3 , a strip-shaped hole penetrating through the base 17 and extending along with the sliding groove is formed on the bottom wall of the sliding groove; the locking assembly includes a bolt 20 for sequentially passing through the second clamping block 19 and the strip-shaped hole and a nut 21 for screwing onto a part of the bolt 20 protruding out of the strip-shaped hole.

[0045] Further, in one embodiment, please refer to Figures 1 to 3 , and further includes a first cushion body 22 and a second cushion body 23 which are both integrally formed of soft materials; the first cushion body 22 is located in the clamping space and is disposed on the first clamping block 18, and the second cushion body 23 is located in the clamping space and is disposed on the second clamping block 19. In this embodiment, by providing the first cushion body 22 and the second cushion body 23, a protection effect is provided for the pipe body clamped by the chuck 5, avoiding damage to the pipe body when it is clamped by the chuck 5.

[0046] In the description of this specification, the description of reference terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0047] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A union maintenance device, characterized in that, It includes a seat body, a liquid tank provided on the seat body, a first cylinder provided on the seat body, a first piston slidably arranged in the first cylinder and enclosing a first space with the bottom wall of the first cylinder, a chuck provided on the first piston and used for clamping a pipe body, a liquid supply pipeline respectively communicating the first space and the liquid tank, a liquid return pipeline respectively communicating the first space and the liquid tank, a stop valve provided on the liquid return pipeline, a first one-way valve provided at the inlet in the liquid supply pipeline and allowing the liquid in the liquid tank to flow into the liquid supply pipeline, a second one-way valve provided at the outlet of the liquid supply pipeline and allowing the liquid in the liquid supply pipeline to flow into the liquid tank, and a driving mechanism for driving the liquid to sequentially pass through the first one-way valve and the second one-way valve; It further includes a cylinder body arranged along a predetermined direction; The chuck is provided at one end of the cylinder body, the liquid tank is provided at the other end of the cylinder body, the first cylinder is provided inside the cylinder body, and the liquid supply pipeline and the liquid return pipeline are respectively inside the cylinder body; The driving mechanism includes a hinge seat provided on the outer side surface of the cylinder body, a handle hinged on the hinge seat, a second piston with one end hinged on the handle and spaced from the hinge seat, a second cylinder provided on the outer side surface of the cylinder body, a second piston slidably arranged in the second cylinder and enclosing a second space with the bottom wall of the second cylinder, a push rod with one end provided on the handle and the other end connected to the second piston, and a communication pipeline respectively communicating the second space and the liquid supply pipeline; The chuck includes a base connected to the first piston, a first clamping block provided on the base, and a second clamping block provided on the base and spaced from the first clamping block; A clamping space for accommodating the pipe body is formed between the first clamping block and the second clamping block; A chute is provided on the base, the second clamping block is slidably arranged in the chute, one end of the chute is close to the first clamping block, and the other end of the chute extends in a direction away from the first clamping block; The union maintenance device further includes a locking assembly for locking the second clamping block on the chute.

2. The union maintenance device according to claim 1, wherein The communication position of the communication pipeline and the liquid supply pipeline is between the first one-way valve and the second one-way valve.

3. The union maintenance device according to claim 1, wherein, One end of the handle is hinged on the hinge seat, and the other end of the handle extends towards the seat body.

4. The union maintenance device according to claim 1, characterized in that, The liquid tank has a columnar structure.

5. The union maintenance device according to claim 1, characterized in that, A strip-shaped hole penetrating the base and extending along with the chute is formed on the bottom wall of the chute; The locking assembly includes a bolt for sequentially passing through the second clamping block and the strip-shaped hole and a nut for screwing onto the part of the bolt protruding outside the strip-shaped hole.

6. The union maintenance device according to claim 1, wherein, It further includes a first gasket and a second gasket which are both integrally formed of soft materials; The first gasket is inside the clamping space and provided on the first clamping block, and the second gasket is inside the clamping space and provided on the second clamping block.

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