A disassembly and assembly tool for ball valve ball liner

Abstract

The present invention discloses a disassembly and assembly tool for a ball liner of a ball valve, which mainly solves the problems of a series of economic losses such as gas discharge and equipment shutdown caused by replacing the ball liner in the existing ball valve. It includes: a fixed mainboard, the bottom of the fixed mainboard is a plane with a circular hole in the middle, a valve body is provided at the bottom, a ball liner seat is provided in the valve body, a spring is provided on the left side of the ball liner seat, and a ball is provided between the ball liner seats; a moving block, the moving block is located in the middle of the fixed mainboard, and the bottom of the moving block passes through the middle hole of the fixed mainboard; a guide rod, the guide rod is arranged horizontally and passes through the left and right sides of the fixed mainboard, and the lower side of the moving block is attached to the guide rod; a stop block, the stop block is arranged above the horizontal surface of the fixed mainboard and is located on the right side of the moving block. The present invention has the advantage of being able to replace the ball liner without cutting the valve body.

Description

Technical Field

[0001] The present invention relates to the field of ball valve applications, and particularly to a disassembly and assembly tool for a ball valve ball liner. Background Art

[0002] A ball valve is a valve driven by a valve stem and rotating around the axis of the ball valve. It can also be used for fluid regulation and control. In a pipeline, a ball valve is mainly used for cutting, distributing, and changing the flow direction of the medium. It can be tightly closed with only a 90-degree rotation operation and a very small rotational torque.

[0003] When existing valves installed on pipelines are in disrepair over the years, leaks will occur. Internal leaks are mainly caused by excessive wear of the ball liner. This requires replacing the ball liner. The valve body is welded to the pipeline. Without tools for disassembling and assembling the ball liner, the valve body must be cut off. If the valve needs to be cut off, the gas in the pipeline needs to be emptied, and the released gas is a loss. The equipment shutdown is also a loss. A series of operations such as purging after re-welding are also losses. Summary of the Invention

[0004] The purpose of the present invention is to provide a disassembly and assembly tool for a ball valve ball liner to solve a series of economic losses such as gas release and equipment shutdown during the replacement of the ball liner in existing ball valves.

[0005] To achieve the above object, the embodiments of the present invention adopt the following solutions:

[0006] A disassembly and assembly tool for a ball valve ball liner, which includes:

[0007] A fixed main board, the bottom of the fixed main board is a plane, there is a circular hole in the middle, and a valve body is provided at the bottom. A ball liner is provided inside the valve body, a spring is provided on the left side of the ball liner, and a sphere is provided between the ball liners;

[0008] A moving block, the moving block is located in the middle of the fixed main board, and the bottom of the moving block passes through the middle hole of the fixed main board;

[0009] A guide rod, the guide rod is horizontally arranged and penetrates through the left and right sides of the fixed main board, and the lower side of the side of the moving block is attached to the guide rod;

[0010] A resisting block, the resisting block is provided above the horizontal surface of the fixed main board and is located on the right side of the moving block.

[0011] The fixed main board is in a "U" shape. The moving block is supported by horizontally passing the guide rod through the left and right sides of the fixed main board. The guide rod plays a role in supporting and stabilizing the horizontal movement of the moving block left and right. The resisting block plays a supporting role as a fulcrum for the moving block, enabling the moving block to easily push the ball liner, take out the sphere, and replace the ball liner.

[0012] Preferably, bolts are provided on the transverse surface of the fixed main board, and the bolts pass through the fixed main board to connect with the valve body.

[0013] Preferably, the moving block is provided in a pair at the front and rear, a top block is provided on the left side of the moving block, screws are provided at the front and rear sides of the left side of the top block, and the screws pass through the top block to connect the moving block.

[0014] Preferably, a first screw is provided on the left side of the fixed main board, and the right end surface of the first screw passes through the left side of the fixed main board and fits on the left side of the top block. The first screw can push the top of the moving block, act as a driving force and can be fixed at any time, saving manual effort, making it convenient to take out the ball and replace the ball liner.

[0015] Preferably, there are two moving blocks, the inner side surfaces of the two moving blocks are the first surface, the first surface is a circular arc surface, the bottom of the moving block is the second surface, the second surface is a circular arc surface, and the second surface can fit the surface of the sphere. The gap formed between the first surfaces on the inner sides of the two moving blocks is convenient for the sphere to pass through and take out.

[0016] Preferably, a semicircular notch is provided on the left side of the stop block, and the front and rear sides of the notch are attached to the right side of the moving block.

[0017] Preferably, a guide block is provided on the transverse surface of the fixed mainboard, and the guide block is in the shape of a transversely arranged long strip, and the guide block is located at the front and rear sides of the stop block.

[0018] Preferably, a second screw is provided on the right side of the fixed mainboard, and the left end surface of the second screw passes through the right side of the fixed mainboard and fits on the right side of the guide block. The second screw can fine-tune the position of the stop block, making it convenient to adjust the fulcrum position of the moving block.

[0019] Preferably, a screw hole is drilled on the side of the sphere, the inner surface of the screw hole is provided with a thread, a long rod can be inserted into the screw hole, and the outer surface of the long rod is provided with a thread.

[0020] A method for using a disassembly and assembly tool for a ball valve ball liner, comprising:

[0021] Remove other parts above the valve body, and then place the fixed mainboard on the top of the valve body, aligning the middle hole of the fixed mainboard with the ball in the valve body, and fix the fixed mainboard on the valve body with bolts;

[0022] Pass the guide rod through the fixed main board and fix it. Fix the moving block and the top block together with screws. Place the stop block between the guide blocks. Then place the moving block on the guide rod so that the bottom of the moving block passes through the fixed main board and contacts the ball and the ball bushing. Finally, pass the first screw from the left side of the fixed main board and abut against the left side of the top block. Pass the second screw from the right side of the fixed main board and abut against the right side of the stop block.

[0023] Turn the second screw rod to adjust the position of the stop block so that the semicircular notch on the left side of the stop block coincides with the hole of the fixed main board. Then turn the first screw rod to push the top of the moving block to the right. The middle of the moving block contacts the stop block and acts as a fulcrum. The bottom of the moving block pushes the ball bushing to the left according to the force, so that the ball bushing on the left squeezes the spring, and the ball in the valve body has space to move.

[0024] Insert the long rod between the two moving blocks, use the bottom of the long rod to touch the sphere and flip it so that the screw hole on the sphere turns upward, then insert the bottom of the long rod into the screw hole, rotate the long rod to fix it to the sphere, and finally use the long rod to take the sphere out of the middle hole of the fixed main board. The ball liner will also have space to be taken out for replacement.

[0025] Beneficial effects of the present invention:

[0026] The present invention relates to a tool for disassembling and assembling a ball liner of a ball valve. The tool comprises a moving block placed on a guide rod laterally fixed in a fixed main board, and the bottom of the moving block passes through the fixed main board and extends into the valve body. A stop block is pressed against the moving block to serve as a fulcrum, and a first screw rod is rotated to push the moving block to move, thereby squeezing the ball liner against a spring, so that there is space for the ball to be taken out and the ball liner can be replaced. The present invention has the beneficial effects of being able to replace the ball liner without cutting open the valve body, reducing equipment downtime and reducing economic losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a cross-sectional view of a disassembly and assembly tool for a ball liner of a ball valve according to the present invention.

[0028] Figure 2 It is a three-dimensional view of a disassembly and assembly tool for a ball liner of a ball valve according to the present invention.

[0029] Figure 3 It is a cross-sectional stereoscopic view of a disassembly and assembly tool for a ball liner of a ball valve according to the present invention.

[0030] Figure 4 It is a three-dimensional view of the long rod and the sphere of the present invention.

[0031] 1. Fix the main board 2. Guide rod 3. Stop block

[0032] 4. Valve body 5. Moving block 6. First screw

[0033] 7. Ball 8. Ball lining 9. Spring

[0034] 10. Bolt 11. Second screw rod 12. Top block

[0035] 13. Screw 14. Guide block 15. Long rod

[0036] 51, first surface 52, second surface 71, screw hole DETAILED DESCRIPTION

[0037] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] In the description of the present invention, it should be noted that the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are 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 operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "one", "first", "second", "third", "fourth", "fifth", "sixth" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0039] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] For the purpose of simplicity and illustration, the principles of the embodiments are described mainly by reference to examples. In the following description, many specific details are proposed to provide a thorough understanding of the embodiments. However, it is obvious. For those of ordinary skill in the art, these embodiments may not be limited to these specific details in practice. In some instances, known methods and structures are not described in detail to avoid making these embodiments unnecessarily difficult to understand. In addition, all embodiments may be used in combination with each other.

[0041] like Figure 1 As shown in the figure, a disassembly and assembly tool for a ball valve ball liner, which includes: a fixed main board 1, the bottom of the fixed main board 1 is flat, there is a circular hole in the middle, and a valve body 4 is provided at the bottom. A ball liner 8 is provided in the valve body 4, a spring 9 is provided on the left side of the ball liner 8, and a sphere 7 is provided between the ball liners 8; a moving block 5, the moving block 5 is located in the middle of the fixed main board 1, and the bottom of the moving block 5 passes through the middle hole of the fixed main board 1; a guide rod 2, the guide rod 2 is horizontally arranged and penetrates through the left and right sides of the fixed main board 1, and the lower side of the side of the moving block 5 is attached to the guide rod 2; a resisting block 3, the resisting block 3 is arranged above the horizontal surface of the fixed main board 1 and is located on the right side of the moving block 5. The fixed main board 1 is in a "U" shape. The moving block 5 is lifted by the guide rod 2 horizontally passing through the left and right sides of the fixed main board 1. The guide rod 2 plays a role in supporting and stabilizing the horizontal movement of the moving block 5 left and right. The resisting block 3 plays a supporting role as a fulcrum for the moving block 5, enabling the moving block 5 to easily push the ball liner 8, take out the sphere 7, and replace the ball liner 8.

[0042] Specifically, a bolt 10 is provided on the horizontal surface of the fixed main board 1, and the bolt 10 passes through the fixed main board 1 and is connected to the valve body 4.

[0043] Specifically, a pair of moving blocks 5 are arranged front and back. A top block 12 is provided on the left side of the moving block 5. Screws 13 are provided front and back on the left side of the top block 12, and the screws 13 pass through the top block 12 and are connected to the moving block 5.

[0044] Specifically, as Figure 2 shown, a first screw rod 6 is provided on the left side of the fixed main board 1, and the right end surface of the first screw rod 6 passes through the left side of the fixed main board 1 and is attached to the left surface of the top block 12. The first screw rod 6 can push the top of the moving block 5, act as a driving force and can be fixed at any time, saving the effort of manual掰动 (should be "prying"), facilitating taking out the sphere 7 and replacing the ball liner 8.

[0045] Specifically, as Figure 3 shown, there are two moving blocks 5. The inner side surfaces of the two moving blocks 5 are the first surfaces 51, and the first surfaces 51 are arc-shaped curved surfaces. The bottom of the moving block 5 is the second surface 52, and the second surface 52 is an arc-shaped curved surface. The second surface 52 can be attached to the surface of the sphere 7. The gap formed between the first surfaces 51 on the inner sides of the two moving blocks 5 facilitates the sphere to pass through and be taken out.

[0046] Specifically, a semi-circular notch is provided on the left surface of the resisting block 3, and the front and back sides of the notch are attached to the right surface of the moving block 5.

[0047] Specifically, a guide block 14 is provided on the horizontal surface of the fixed main board 1. The guide block 14 is in a long strip shape arranged horizontally, and the guide block 14 is located on the front and back sides of the resisting block 3.

[0048] Specifically, a second screw 11 is provided on the right side of the fixed mainboard 1, and the left end surface of the second screw 11 passes through the right side of the fixed mainboard 1 and fits on the right side of the guide block 14. The second screw 11 can fine-tune the position of the stop block 3, so as to facilitate the adjustment of the fulcrum position of the moving block 5.

[0049] Specifically, Figure 4 As shown, a screw hole 71 is drilled on the side of the sphere 7, and a thread is provided on the inner surface of the screw hole 71. A long rod 15 can be inserted into the screw hole 71, and a thread is provided on the outer surface of the long rod 15.

[0050] A method for using a disassembly and assembly tool for a ball valve ball liner, comprising:

[0051] Remove other parts above the valve body 4, and then place the fixed mainboard 1 above the valve body 4, aligning the middle hole of the fixed mainboard 1 with the ball 7 in the valve body 4, and fix the fixed mainboard 1 on the valve body 4 with bolts 10;

[0052] The guide rod 2 is passed through the fixed main board 1 and fixed, the moving block 5 and the top block 12 are fixed together by screws 13, the stop block 3 is placed between the guide blocks 14, and then the moving block 5 is placed on the guide rod 2, so that the bottom of the moving block 5 passes through the fixed main board 1 and contacts the ball 7 and the ball bushing 8, and finally the first screw rod 6 is passed through the left side of the fixed main board 1 and abuts against the left side of the top block 12, and the second screw rod 11 is passed through the right side of the fixed main board 1 and abuts against the right side of the stop block 3;

[0053] Turn the second screw 11 to adjust the position of the stop block 3 so that the semicircular notch on the left side of the stop block 3 coincides with the hole of the fixed main board 1, and then turn the first screw 6 to push the top of the moving block 5 to move rightward, so that the middle of the moving block 5 contacts the stop block 3 and acts as a fulcrum, and the bottom of the moving block 5 pushes the ball bushing 8 to the left in accordance with the force, so that the ball bushing 8 on the left side squeezes the spring 9, and the ball 7 in the valve body 4 has space to move;

[0054] Insert the long rod 15 between the two moving blocks 5, use the bottom of the long rod 15 to touch the sphere 7 to flip it, so that the screw hole 71 on the sphere 7 turns upward, then insert the bottom of the long rod 15 into the screw hole 71, rotate the long rod 15 to fix it to the sphere 7, and finally use the long rod 15 to take the sphere 7 out of the middle hole of the fixed main board 1, and there is space to take out the ball liner 8 for replacement.

[0055] The present invention is a tool for disassembling and assembling a ball liner of a ball valve. The tool comprises the following steps: placing a moving block 5 on a guide rod 2 which is laterally fixed in a fixed main board 1. The bottom of the moving block 5 passes through the fixed main board 1 and extends into a valve body 4. A stop block 3 is pressed against the moving block 5 to serve as a fulcrum. The first screw rod 6 rotates and pushes the moving block 5 to move. The ball liner 8 is squeezed against the spring 9 by the force, so that there is space for the ball 7 to be taken out and the ball liner 8 can be replaced. The present invention has the beneficial effects of being able to replace the ball liner 8 without cutting open the valve body 4, reducing equipment downtime and reducing economic losses.

[0056] Although the above describes the illustrative specific embodiments of the present invention so that those skilled in the art can understand the present invention, the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the attached claims, all inventions and creations using the concepts of the present invention are protected.

Claims

1. A tool for disassembling and assembling a ball liner of a ball valve, wherein: include: A fixed mainboard, the bottom of the fixed mainboard is a plane with a circular hole in the middle, a valve body is provided at the bottom, a ball bushing is provided in the valve body, a spring is provided on the left side of the ball bushing, and a ball is provided between the ball bushings; A moving block, the moving block is located in the middle of the fixed main board, and the bottom of the moving block passes through the middle hole of the fixed main board; A guide rod, which is arranged transversely and passes through the left and right sides of the fixed main board, and the lower side of the moving block is attached to the guide rod; A stop block, the stop block is arranged above the horizontal surface of the fixed main board and is located on the right side of the moving block; The moving block is provided with a pair of front and rear blocks, a top block is provided on the left side of the moving block, and screws are provided on the left side and front and rear of the top block, and the screws pass through the top block to connect the moving block; A first screw is provided on the left side of the fixed main board, and a right end surface of the first screw passes through the left side of the fixed main board and is attached to the left side of the top block; A guide block is provided on the transverse surface of the fixed mainboard, and the guide block is in the shape of a transversely arranged long strip, and the guide block is located at the front and rear sides of the stop block; A second screw is provided on the right side of the fixed main board, and a left end surface of the second screw passes through the right side of the fixed main board and is attached to the right side of the stop block; Bolts are arranged on the transverse surface of the fixed main board, and the bolts pass through the fixed main board to connect with the valve body; A semicircular notch is provided on the left side of the stop block, and the front and rear sides of the notch are attached to the right side of the moving block; A screw hole is drilled on the side of the sphere, a thread is arranged on the inner surface of the screw hole, a long rod can be inserted into the screw hole, and a thread is arranged on the outer surface of the long rod.

2. A tool for disassembling and assembling a ball liner of a ball valve according to claim 1, wherein: There are two moving blocks, the inner side surfaces of the two moving blocks are first surfaces, the first surfaces are arc curved surfaces, the bottom of the moving blocks are second surfaces, the second surfaces are arc curved surfaces, and the second surfaces can fit the surface of the sphere.

3. A method for using a tool for disassembling and assembling a ball liner of a ball valve, characterized in that: A disassembly and assembly tool for a ball valve ball liner according to any one of claims 1 to 2, further comprising: Remove other parts above the valve body, and then place the fixed mainboard on the top of the valve body, aligning the middle hole of the fixed mainboard with the ball in the valve body, and fix the fixed mainboard on the valve body with bolts; Pass the guide rod through the fixed main board and fix it. Fix the moving block and the top block together with screws. Place the stop block between the guide blocks. Then place the moving block on the guide rod so that the bottom of the moving block passes through the fixed main board and contacts the ball and the ball bushing. Finally, pass the first screw from the left side of the fixed main board and abut against the left side of the top block. Pass the second screw from the right side of the fixed main board and abut against the right side of the stop block. Turn the second screw rod to adjust the position of the stop block so that the semicircular notch on the left side of the stop block coincides with the hole of the fixed main board. Then turn the first screw rod to push the top of the moving block to the right. The middle of the moving block contacts the stop block and acts as a fulcrum. The bottom of the moving block pushes the ball bushing to the left according to the force, so that the ball bushing on the left squeezes the spring, and the ball in the valve body has space to move. Insert the long rod between the two moving blocks, use the bottom of the long rod to touch the sphere and flip it so that the screw hole on the sphere turns upward, then insert the bottom of the long rod into the screw hole, rotate the long rod to fix it to the sphere, and finally use the long rod to take the sphere out of the middle hole of the fixed main board. The ball liner will also have space to be taken out for replacement.

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