Maintenance tool for valve element of valve

Abstract

The utility model provides a valve element maintenance tool, which relates to the technical field of valve tools, and comprises a sleeve, an extraction hanging ring, a steel wire rope and a locking fastener, the inner side of the sleeve is provided with a sleeve lining, the upper end and the lower end of the sleeve lining extend out of the sleeve, and the upper end and the lower end of the sleeve lining respectively wrap the upper end and the lower end of the sleeve; the two sets of extraction hanging rings are arranged, the two sets of extraction hanging rings are connected to the upper portions of the two sides of the sleeve correspondingly, each extraction hanging ring comprises a connecting rod and an extraction circular ring, and one end of each connecting rod is connected with the sleeve; during operation, the sleeve is sleeved on the valve rod, the screw cap is used for screwing the thread at the top end of the valve rod for fixing, the circular rings at the two ends of the steel wire rope are connected with the extraction circular ring through the lock catch pieces, and during hoisting, the steel wire rope is hooked by a lifting hook of a hoisting machine for hoisting, and the valve rod is protected through the sleeve and the inner sleeve lining. The valve rod is prevented from being touched and damaged in the lifting process, the sealing performance of the valve rod is prevented from being damaged, the structure is simple, and operation is labor-saving.

Description

Technical Field

[0001] The utility model relates to the technical field of valve tools, in particular to a valve core repair tool. Background Art

[0002] Valves are pipe accessories used to open and close pipelines, control flow direction, and adjust and control the parameters (temperature, pressure, and flow) of the conveying medium. They have functions such as shutoff, regulation, diversion, backflow prevention, pressure stabilization, diversion, or overflow pressure relief. Valves can be divided into shut-off valves, check valves, and regulating valves according to their functions; they can also be divided into cast iron valves, cast steel valves, and stainless steel valves according to their materials. Valves can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal, and radioactive media. Valves are control components in fluid conveying systems and are used to change the passage section and the flow direction of the medium.

[0003] The valve is mainly composed of valve body, valve cover, opening and closing mechanism, stuffing box and drive device. Among them, the valve body is the channel for the flow of medium, which bears the pressure of the medium and the force of forced closure. The connection methods between the valve body and the pipeline include threaded connection, flange connection and welding connection; the connection methods between the valve cover and the valve body include threaded connection, flange connection and self-sealing by medium pressure. The opening and closing mechanism includes valve stem and valve core. The valve stem is the lifting component inside the valve, which moves the valve core by rotating or lifting up and down. The valve core is the movable component inside the valve body, which is used to control the flow of medium. The stuffing box is used to prevent the leakage of the medium. It is usually placed between the valve seat and the valve disc. Its material is usually selected from rubber, polytetrafluoroethylene, etc. The drive device is usually an additional part selected on large valves to complete the remote control of the valve, including pneumatic transmission, electric transmission, hydraulic transmission, etc. During the inspection and maintenance of the valve, especially during the extraction of the opening and closing mechanism, since the valve core and valve stem are precision parts, the valve stem is easy to be bumped and injured during the extraction process, resulting in poor sealing or even damage. Therefore, the utility model provides a valve core repair tool to solve the problems existing in the prior art. Utility Model Content

[0004] In view of the above problems, the utility model proposes a valve core maintenance tool, which protects the valve stem through a sleeve and an internal sleeve liner to avoid touching and damaging the valve stem and destroying the sealing of the valve stem during the lifting process. It has a simple structure and saves effort in operation.

[0005] To achieve the purpose of the utility model, the utility model is implemented through the following technical solutions: a valve core maintenance tool, including a sleeve, an extraction ring, a wire rope and a locking piece, the inner side of the sleeve is provided with a sleeve liner, and the upper and lower ends of the sleeve liner both extend out of the sleeve, the upper and lower ends of the sleeve liner respectively wrap the upper and lower ends of the sleeve, the extraction ring is provided with two groups, and the two groups of extraction rings are respectively connected to the upper sides of the sleeve, the extraction ring includes a connecting rod and an extraction ring, one end of the connecting rod is connected to the sleeve, and the extraction ring is provided at the other end of the connecting rod;

[0006] Both ends of the steel wire rope are provided with circular rings, and the circular rings at both ends are respectively connected with the two groups of extraction circular rings through locking fasteners.

[0007] Furthermore, the locking member includes a U-shaped locking buckle and a bolt, the ring and the extraction ring are both mounted on the U-shaped locking buckle, the bolt is installed at the opening of the U-shaped locking buckle, and one end of the bolt is fixed by a nut.

[0008] Furthermore, the sleeve lining is rubber, and the thickness of the sleeve lining is ≥3mm, and the sleeve lining and the sleeve are fixed by thermal bonding.

[0009] Furthermore, one end of the connecting rod is welded and fixed to the sleeve, and the other end of the connecting rod is integrally formed with the extraction ring.

[0010] Furthermore, the steel wire rope is of 6×37+FC type or 6×61+FC type, and the steel wire rope is integrally formed with the circular ring.

[0011] Furthermore, the sleeve is used to be sleeved on the valve stem, and a thread is provided above the outer side of the valve stem. A nut is installed on the upper end of the valve stem through the thread, and the nut is used to lock the valve stem and the sleeve. The lower end of the valve stem is a valve core.

[0012] The beneficial effects of the utility model are:

[0013] 1. When operating the utility model, the sleeve is put on the valve stem, the thread at the top of the valve stem is tightened with a nut to fix it, the two end rings of the wire rope are connected with the extraction ring with a locking piece, and the hook of the hoisting machine is hooked on the wire rope for lifting. The valve stem is protected by the sleeve and the internal sleeve lining to avoid touching and damaging the valve stem and destroying the sealing of the valve stem during the lifting process. The structure is simple and the operation is labor-saving;

[0014] 2. The sleeve liner of the utility model is fixed to the sleeve by thermal bonding, and both ends of the sleeve are also extended and wrapped by the sleeve liner. After the sleeve is sleeved on the valve stem, the lower end is wrapped by the sleeve liner and will not damage the valve core. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the sleeve of the utility model;

[0016] Figure 2 It is a schematic diagram of the steel wire rope of the utility model;

[0017] Figure 3 It is a schematic diagram of the locking member of the utility model;

[0018] Figure 4 It is a schematic diagram of the valve stem of the utility model.

[0019] The accompanying drawings are marked as follows: 1. sleeve; 2. wire rope; 3. sleeve lining; 4. connecting rod; 5. extraction ring; 6. ring; 7. U-shaped lock; 8. bolt; 9. nut; 10. valve stem; 11. nut; 12. valve core. DETAILED DESCRIPTION

[0020] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with an embodiment. The embodiment is only used to explain the present invention and does not constitute a limitation on the protection scope of the present invention.

[0021] Example 1

[0022] according to Figure 1-4 As shown, this embodiment proposes a valve core maintenance tool, including a sleeve 1, an extraction lifting ring, a wire rope 2 and a locking piece, the inner side of the sleeve 1 is provided with a sleeve liner 3, and the upper and lower ends of the sleeve liner 3 extend out of the sleeve 1, and the upper and lower ends of the sleeve liner 3 respectively wrap the upper and lower ends of the sleeve 1, the extraction lifting ring is provided with two groups, and the two groups of extraction lifting rings are respectively connected to the upper sides of the sleeve 1, the extraction lifting ring includes a connecting rod 4 and an extraction ring 5, one end of the connecting rod 4 is connected to the sleeve 1, and the extraction ring 5 is provided at the other end of the connecting rod 4;

[0023] Furthermore, both ends of the steel wire rope 2 are provided with a ring 6, and the rings 6 at both ends are respectively connected to the two groups of extraction rings 5 ​​through locking parts. During operation, the sleeve 1 is put on the valve stem 10, and the thread at the top of the valve stem 10 is tightened with a nut 11 to fix it, and the rings 6 at both ends of the steel wire rope 2 are connected to the extraction rings 5 ​​with locking parts. When lifting, the hook of the hoisting machine hooks the steel wire rope 2 to lift it. The valve stem 10 is protected by the sleeve 1 and the internal sleeve liner 3 to avoid touching and damaging the valve stem 10 and destroying the sealing of the valve stem 10 during the lifting process. The sleeve 1 is generally a steel pipe with a diameter of 60mm and a length of about 500mm. The diameter and length are determined according to the valve stem 10, and are suitable for the maintenance and lifting of valve cores of valves above DN200mm.

[0024] Furthermore, the locking member includes a U-shaped locking buckle 7 and a bolt 8, the ring 6 and the extraction ring 5 are both sleeved on the U-shaped locking buckle 7, the bolt 8 is installed at the opening of the U-shaped locking buckle 7, and one end of the bolt 8 is fixed by a nut 9. When in use, the ring 6 and the extraction ring 5 are both sleeved on the U-shaped locking buckle 7, the opening of the U-shaped locking buckle 7 is fixed by the bolt 8 and the nut 9, and the lifting machine hooks the wire rope 2 for lifting.

[0025] Furthermore, the sleeve lining 3 is made of rubber, and the thickness of the sleeve lining 3 is ≥3 mm, and the sleeve lining 3 is fixed to the sleeve 1 by thermal bonding. The sleeve lining 3 is fixed to the sleeve 1 by thermal bonding, and both ends of the sleeve 1 are also extended and wrapped by the sleeve lining 3. After the sleeve 1 is sleeved on the valve stem 10, the lower end is wrapped by the sleeve lining 3, and the valve core 12 will not be damaged. The role of the lining rubber is to protect the valve stem 10 and prevent the sleeve 1 from damaging the valve stem 10 during the process of extracting the valve core 12.

[0026] Furthermore, one end of the connecting rod 4 is welded and fixed to the sleeve 1, and the other end of the connecting rod 4 is integrally formed with the extraction ring 5. It is more secure. The steel wire rope 2 is 6×37+FC type or 6×61+FC type, and the steel wire rope 2 is integrally formed with the ring 6, which is more secure. The two ends of the steel wire rope 2 form a ring 6, which is connected to the extraction ring 5 with a locking piece. The load-bearing capacity of the steel wire rope 2 meets 5 times the weight of the valve core 12 and the valve stem 10, and the length meets the requirements of safe lifting.

[0027] Example 2

[0028] according to Figure 1-4 As shown, this embodiment proposes a valve core maintenance tool, including a sleeve 1, an extraction lifting ring, a wire rope 2 and a locking piece, the inner side of the sleeve 1 is provided with a sleeve liner 3, and the upper and lower ends of the sleeve liner 3 extend out of the sleeve 1, and the upper and lower ends of the sleeve liner 3 respectively wrap the upper and lower ends of the sleeve 1, the extraction lifting ring is provided with two groups, and the two groups of extraction lifting rings are respectively connected to the upper sides of the sleeve 1, the extraction lifting ring includes a connecting rod 4 and an extraction ring 5, one end of the connecting rod 4 is connected to the sleeve 1, and the extraction ring 5 is provided at the other end of the connecting rod 4;

[0029] Furthermore, both ends of the steel wire rope 2 are provided with a ring 6, and the rings 6 at both ends are respectively connected to the two groups of extraction rings 5 ​​through locking parts. During operation, the sleeve 1 is put on the valve stem 10, and the thread at the top of the valve stem 10 is tightened with a nut 11 to fix it, and the rings 6 at both ends of the steel wire rope 2 are connected to the extraction rings 5 ​​with locking parts. When lifting, the hook of the hoisting machine hooks the steel wire rope 2 to lift it. The valve stem 10 is protected by the sleeve 1 and the internal sleeve liner 3 to avoid touching and damaging the valve stem 10 and destroying the sealing of the valve stem 10 during the lifting process. The sleeve 1 is generally a steel pipe with a diameter of 60mm and a length of about 500mm. The diameter and length are determined according to the valve stem 10. It is suitable for the maintenance and lifting of valve cores of valves above DN200mm.

[0030] Further, the sleeve 1 is used to be sleeved on the valve stem 10, and the upper part of the outer side of the valve stem 10 is provided with a thread, and the upper end of the valve stem 10 is provided with a nut 11 through the thread, and the nut 11 is used to lock the valve stem 10 and the sleeve 1, and the lower end of the valve stem 10 is a valve core 12. During operation, the sleeve 1 is sleeved on the valve stem 10, and the thread at the top of the valve stem 10 is tightened and fixed with the nut 11, and the two end rings 6 of the steel wire rope 2 are connected with the extraction ring 5 with a locking piece, and the lifting hook of the lifting machine hooks the steel wire rope 2 for lifting. The valve stem 10 is protected by the sleeve 1 and the internal sleeve lining 3 to avoid touching and damaging the valve stem 10 and destroying the sealing of the valve stem 10 during the lifting process. After the sleeve 1 is sleeved on the valve stem 10, the lower end is wrapped by the sleeve lining 3, and the valve core 12 will not be damaged.

[0031] When operating the valve core inspection tool, the sleeve 1 is put on the valve stem 10, and the thread at the top of the valve stem 10 is tightened with the nut 11 to fix it. The two end rings 6 of the wire rope 2 are connected with the extraction ring 5 with the lock fastener. When lifting, the hook of the lifting machine hooks the wire rope 2 to lift it. The valve stem 10 is protected by the sleeve 1 and the internal sleeve liner 3 to avoid touching and damaging the valve stem 10 and destroying the sealing of the valve stem 10 during the lifting process. The structure is simple and the operation is labor-saving. At the same time, the sleeve liner 3 and the sleeve 1 are fixed by thermal bonding, and the two ends of the sleeve 1 are also extended and wrapped by the sleeve liner 3. After the sleeve 1 is put on the valve stem 10, the lower end is wrapped by the sleeve liner 3, and the valve core 12 will not be damaged.

[0032] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A valve core inspection tool, comprising a sleeve (1), a lifting ring, a wire rope (2) and a locking member, characterized in that: A sleeve liner (3) is provided on the inner side of the sleeve (1), and the upper and lower ends of the sleeve liner (3) extend out of the sleeve (1), and the upper and lower ends of the sleeve liner (3) respectively wrap the upper and lower ends of the sleeve (1), and the extraction rings are provided in two groups, and the two groups of extraction rings are respectively connected to the upper sides of the sleeve (1), and the extraction rings include a connecting rod (4) and an extraction ring (5), one end of the connecting rod (4) is connected to the sleeve (1), and the extraction ring (5) is provided at the other end of the connecting rod (4); Both ends of the steel wire rope (2) are provided with circular rings (6), and the circular rings (6) at both ends are respectively connected to the two groups of extraction circular rings (5) through locking parts.

2. A valve core repair tool according to claim 1, characterized in that: The locking member comprises a U-shaped locking buckle (7) and a bolt (8), the circular ring (6) and the extraction circular ring (5) are both sleeved on the U-shaped locking buckle (7), the bolt (8) is installed at the opening of the U-shaped locking buckle (7), and one end of the bolt (8) is fixed by a nut (9).

3. A valve core repair tool according to claim 1, characterized in that: The sleeve lining (3) is made of rubber, and the thickness of the sleeve lining (3) is ≥3 mm. The sleeve lining (3) and the sleeve (1) are fixed by thermal bonding.

4. A valve core repair tool according to claim 1, characterized in that: One end of the connecting rod (4) is welded and fixed to the sleeve (1), and the other end of the connecting rod (4) is integrally formed with the extraction ring (5).

5. The valve core repair tool according to claim 1, characterized in that: The steel wire rope (2) is of 6×37+FC type or 6×61+FC type, and the steel wire rope (2) and the circular ring (6) are integrally formed.

6. A valve core repair tool according to claim 1, characterized in that: The sleeve (1) is used to be sleeved on the valve stem (10), and a thread is provided on the upper part of the outer side of the valve stem (10). A nut (11) is installed on the upper end of the valve stem (10) through a thread. The nut (11) is used to lock the valve stem (10) and the sleeve (1). The lower end of the valve stem (10) is a valve core (12).

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