Valve opening tool for quartered needle valve

Abstract

The invention discloses a quartered needle valve opening tool in the technical field of mechanical equipment, and the quartered needle valve opening tool comprises a stick body, a pair of clamping blocks is installed at the position, close to the middle, of the stick body, the distance between the two clamping blocks is consistent with the diameter of the hollowed-out position of the surface of a standard quartered needle valve switch valve disc, and the side walls of the clamping blocks are attached to the inner wall of the hollowed-out position; the two clamping blocks can be inserted into the hollowed-out position of a switch valve disc of the quartered needle valve at the same time and clamped tightly, and when the stick body rotates with the midpoint of the two clamping blocks as the axis, the switch valve disc of the quartered needle valve is driven by the clamping blocks to rotate along with the stick body. In the action of opening and closing the valve disc of the quartered needle valve, the tool can be firmly fixed to the valve disc, it is guaranteed that force is exerted stably, the rotating radius is increased, more labor is saved, and the situation that the hands of workers are easily injured due to tool slipping is avoided.

Description

Technical Field

[0001] The invention relates to a four-point needle valve opening tool, belonging to the technical field of mechanical equipment. Background Art

[0002] Valves are pipe accessories used to open and close pipes, control flow direction, and adjust and control the parameters (temperature, pressure, and flow) of the conveying medium. According to their functions, they can be divided into shut-off valves, check valves, regulating valves, four-point needle valves, etc.

[0003] In daily work, four-point needle valves are mostly opened and closed with adjustable wrenches or pipe pliers. During the opening and closing operation, these tools cannot be firmly fixed on the valve disc, which affects the force, and once they slip, it is easy to cause hand injuries to employees. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a four-point needle valve opening tool. The valve disc is designed for the four-point needle valve and is fixed to the valve disc by a clamping block when the valve disc is rotated, making it easier to rotate the valve disc and reducing the possibility of injury to employees.

[0005] To achieve the above object, the present invention is implemented by adopting the following technical solutions:

[0006] In the first aspect, the present invention provides a four-point needle valve opening tool, including a stick body, a pair of clamping blocks are installed near the middle of the stick body, and the distance between the two clamping blocks is consistent with the diameter of the hollow part on the surface of the standard four-point needle valve switch valve disc, the side wall of the clamping block is in contact with the inner wall of the hollow part, and the two clamping blocks can be inserted into the hollow part of the switch valve disc of the four-point needle valve at the same time and clamped, when the stick body rotates along the midpoint of the two clamping blocks as the axis, the switch valve disc of the four-point needle valve rotates accordingly driven by the clamping blocks.

[0007] Furthermore, a through hole is opened on the surface of the stick body, and a threaded rod is fixedly connected to the bottom of the block. The threaded rod passes through the through hole and is fixed to the stick body by screwing a nut.

[0008] Furthermore, there are multiple through holes, and the distance between different through holes corresponds to the diameter of the hollow part of the valve disc of different models and sizes.

[0009] Furthermore, a slot is provided at one end of the stick body, and a clamping rod is installed in the slot, and a bending part is provided at the end of the clamping rod located outside the slot, and the bending part is in contact with the inner wall of the hollow part on the surface of the switch valve disc of the four-point needle valve. The clamping rod and one of the clamping blocks can be inserted into the hollow part of the switch valve disc of the four-point needle valve at the same time and clamped. When the stick body rotates along the center of the circle of the switch valve disc of the four-point needle valve as the axis, the switch valve disc rotates accordingly driven by the clamping rod and the clamping block.

[0010] Furthermore, the stick body and the clamping rod are provided with corresponding through holes 2, and the clamping rod is fixed to the stick body by screwing in nut 2 after threaded rod 2 passes through the stick body along through hole 2.

[0011] Furthermore, there are multiple through holes 2 on the stick body, and the multiple through holes 2 are equidistantly distributed along the insertion direction of the clamping rod.

[0012] Furthermore, the slot axially penetrates the stick body, and a plurality of rotatable gears are installed in the middle of the slot, an insertion rod capable of moving along the slot is installed at one end of the slot away from the clamping rod, and a strip-shaped through groove for a threaded rod to pass through is provided on the surface of the insertion rod and the clamping rod, the side walls of the clamping rod end and the insertion rod end located in the slot are both provided with teeth, and are respectively meshed with the two sides of the gears, and the insertion rod and the clamping rod move toward each other along the extension direction of the slot driven by the gears.

[0013] Furthermore, the stick body and the insertion rod are provided with corresponding through holes three, and the insertion rod is fixed to the stick body by means of threaded rod two passing through the stick body along through hole three and then screwing into nut two, and there are multiple through holes three on the stick body.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present invention installs two blocks with the same diameter as the hollow part on the surface of the switch valve disc of a standard four-point needle valve on a stick body, so that the two blocks can be effectively fixed in the valve disc, avoiding the situation that the rotating valve slips and easily causes hand injuries to employees, thereby reducing the possibility of employee injury. The tool is not only lightweight and durable, but also more labor-saving, easy to carry, low-cost and simple to make.

[0016] Second, the present invention installs a clamping rod on one side of the stick body, and the end of the clamping rod is provided with a bending part that fits with the inner wall of the hollow part of the surface of the switch valve disc of the four-point needle valve, so that the tool can be applied to four-point needle valves other than standard styles, and the rotation method is more labor-saving. In addition, a plurality of through holes 1 and 2 are provided on the surface of the stick body, and the operator can adjust the installation position of the clamping block and the clamping rod, so as to be applicable to four-point needle valves of different styles, thereby further improving the applicability of the tool;

[0017] 3. The present invention installs an insertion rod at the other end of the stick body away from the clamping rod, and the insertion rod can drive the clamping rod to move toward each other along the extension direction of the slot through gears, and the insertion rod can be fixed at multiple depths in the slot to facilitate adjustment of the distance between the clamping rod and the clamping block, so that the tool can be applied to other styles of four-point needle valves, and the staff can easily adjust the distance between the clamping rod and the clamping block on one side of the valve to match the valve switch, and the fixing of the clamping rod is also achieved by fixing the insertion rod at the other end, without taking out the stick body and fixing it. On the other hand, the insertion rod extending outward further increases the rotation radius of the valve disc, which is more labor-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 An overall schematic diagram of a four-point needle valve opening tool provided in Example 1 of the present invention;

[0020] Figure 2 A partially enlarged view of a four-point needle valve opening tool provided in the first embodiment of the present invention;

[0021] Figure 3 A cross-sectional view of a four-point needle valve opening tool provided in Example 2 of the present invention.

[0022] In the figure: 1. stick body; 2. clamping block; 3. threaded rod 1; 4. nut 1; 5. clamping rod; 6. threaded rod 2; 7. nut 2; 8. gear; 9. tooth pattern; 10. strip-shaped through groove; 11. insertion rod. DETAILED DESCRIPTION

[0023] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0024] The following detailed description is an exemplary description, which is intended to provide further detailed description of the present invention. Unless otherwise specified, all technical terms used in the present invention have the same meaning as those generally understood by those skilled in the art to which the present invention belongs. The terms used in the present invention are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present invention.

[0025] Embodiment 1:

[0026] The four-point needle valve is a common valve used in water supply and drainage pipeline systems in the power, water conservancy, metallurgy, chemical industry, urban construction and other industries. The valve switch is a valve disc with a hollow structure, which is opened or closed by manual rotation. In actual applications, some valves are tightly turned. Without the assistance of tools, especially when the palms are wet, it is difficult for workers to turn the valve disc by hand. Therefore, when turning the valve on and off, workers usually use wrenches or other tools to turn the valve disc. However, these tools themselves are not specially used to turn valves. There is no structure on the tool that can be fixed to the valve disc. During the switching action, it cannot be firmly fixed on the valve disc, which affects the force, and once it slips, it is easy to cause hand injuries to employees.

[0027] In view of the above problems, this embodiment designs a four-point needle valve opening tool, please refer to Figure 1 The overall structure of this tool is stick-shaped, and a pair of clamping blocks 2 are installed near the middle of the stick body 1. The distance between the two clamping blocks 2 is consistent with the diameter of the hollow structure on the surface of the switch valve disc of the standard four-point needle valve. The two clamping blocks 2 can be inserted into the hollow part of the valve disc at the same time and clamped with the valve disc. When switching the valve, the staff can hold both sides of the stick body 1, and then insert the clamping blocks 2 into the hollow part of the valve disc, and directly rotate the stick body 1 to complete the opening and closing of the valve. It will not slip like tools such as wrenches because there is no structure to fix the valve disc. The extended stick body 1 increases the rotation radius of the valve disc, which saves more effort when switching the valve.

[0028] This kind of tool structure needs to develop a special mold when making it, and the production cost is high. This embodiment proposes an improved structure, please refer to Figure 2 Two symmetrical through holes 1 are provided in the middle of the stick body 1, and threaded rods 13 are fixed at the bottom of the two clamping blocks 2. The two threaded rods 13 are inserted and penetrated along the two through holes 1, and the threaded rods 13 located on both sides of the through hole 1 fix the clamping block 2 and the stick body 1 through nuts 14. This structure is convenient for disassembly and installation and reduces the manufacturing cost. The number of through holes 1 can be set to multiple, and the distance between different through holes corresponds to the diameter of the hollow part of valve discs of different models and sizes. In this way, the applicability of the tool can be improved. The staff can adjust the distance between the two threaded rods by changing the through hole 1 where the threaded rod 13 is installed, so as to clamp valve discs of different models and sizes to complete the valve switching action.

[0029] Since the installation positions of some valves are relatively special, such as close to the wall or the ground, it is difficult to use the clamping block 2 to clamp the valve disc for rotation on the front side of the valve. This embodiment proposes an improved structure, a slot is provided at one end of the stick body 1, a clamping rod 5 is inserted into the slot and is fixed to the stick body 1, for example, it can be fixed by means of threaded rod 2 6 and nut 2 7, the stick body 1 and the clamping rod 5 are provided with corresponding through holes 2, after the clamping rod 5 is inserted into the slot, the threaded rod 2 6 is passed through the stick body 1 and the clamping rod 5 along the through hole 2, and the threaded rod 2 6 located on both sides of the through hole 2 fixes the clamping rod 5 to the stick body 1 through nuts 2 7. The second through hole can be provided in a plurality of ways on the stick body 1, and the plurality of through holes are equidistantly distributed along the insertion direction of the clamping rod 5. The clamping rod 5 can be fixed at a plurality of depths when inserted into the slot, so as to adjust the distance between the clamping rod 5 and the clamping block 2. The end of the clamping rod 5 located outside the slot is bent, and the bent part fits with the inner wall of the hollow part on the valve disc. In actual use, the staff stands on the side of the valve, first inserts the clamping rod 5 into the hollow part on one side of the valve disc, and clamps it with the bent part and the inner wall of the hollow part, and then inserts a clamping block 2 on the stick body 1 into the hollow part on the other side of the valve disc, so that the stick body 1 is fixed to the valve disc, and the valve can be opened and closed by directly rotating the stick body 1. This structure is convenient for completing the switching of valves in some special positions, and at the same time greatly increases the rotation radius of the valve, which is more labor-saving and suitable for staff with less strength to switch the valve.

[0030] Embodiment 2:

[0031] See also Figure 3, because the diameter of the hollow part of the valve installed in a special position is difficult to be directly compared with the clamping rod 5 and the clamping block 2 from the front, the spacing between the clamping rod 5 and the clamping block 2 requires the staff to repeatedly adjust and try on one side. This embodiment proposes an improved structure based on the first embodiment. The slot axially penetrates the stick body 1, and a plug rod 11 is inserted at the other end of the stick body 1. A plurality of rotatable gears 8 are installed in the middle of the slot of the stick body 1. The end side walls of the clamping rod 5 and the end side walls of the plug rod 11 located in the slot are both provided with tooth patterns 9, and are respectively meshed with the two sides of the gear 8. The plug rod 11 and the clamping rod 5 move toward each other along the extension direction of the slot under the drive of the gear 8. The stick body 1 and the plug rod 11 are provided with corresponding through holes three. After the plug rod 11 is inserted into the slot, the threaded rod 2 6 penetrates the stick body 1 and the plug rod 11 along the through hole three. The threaded rod 2 6 located on both sides of the through hole three fixes the plug rod 11 to the stick body 1 through nuts 2 7. There should be multiple through holes 3 on the stick body 1, and the plug rod 11 can be fixed at multiple depths in the slot to facilitate adjustment of the distance between the clamping rod 5 and the clamping block 2. In actual use, the plug rod 11 is first inserted into the deepest part of the slot. At this time, the clamping rod 5 moves into the slot under the linkage of the gear 8, and the distance between the clamping rod 5 and the clamping block 2 is the shortest distance. The staff can first insert the clamping rod 5 into the hollow part of the valve disc on one side of the valve, and clamp it with the inner wall of the bend and the hollow part, and then pull out the plug rod 11. At this time, the clamping rod 5 moves out of the slot under the linkage of the gear 8, and the distance between the clamping rod 5 and the clamping block 2 increases until the clamping rod 5 and the clamping block 2 are just stuck in the hollow part of the valve disc. When the inner walls on both sides are fixed, the plug rod 11 and the stick body 1 are fixed by the threaded rod 2 6 and the nut 2 7. At this time, the position of the clamp rod 5 is fixed, and the valve can be opened and closed by directly rotating the stick body 1. On the one hand, this structural design can conveniently adjust the distance between the clamp rod 5 and the block 2 on one side of the valve to match the valve switch, and the clamp rod 5 is fixed by fixing the plug rod 11 at the other end, without taking out the stick body 1 and fixing it. On the other hand, the plug rod 11 extending outward further increases the rotation radius of the valve disc, which is more labor-saving. It should be noted that the surface of the clamp rod 5 and the plug rod 11 is provided with a strip-shaped through groove 10, and the threaded rod 1 3 for fixing the block 2 and the threaded rod 2 6 for fixing the plug rod 11 can pass through the strip-shaped through groove 10 to prevent the moving clamp rod 5 and the plug rod 11 from being blocked by the threaded rod 1 3 and the threaded rod 2 6.

[0032] It is known from common technical knowledge that the present invention can be implemented by other embodiments that do not deviate from its spirit or essential features. Therefore, the above disclosed embodiments are only illustrative in all respects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A four-point needle valve opening tool, characterized in that: The invention comprises a stick body (1), wherein a pair of clamping blocks (2) are installed near the middle of the stick body (1), and the distance between the two clamping blocks (2) is consistent with the diameter of the hollow part on the surface of the switch valve disc of a standard four-point needle valve. The side wall of the clamping block (2) fits the inner wall of the hollow part. The two clamping blocks (2) can be simultaneously inserted into the hollow part of the switch valve disc of the four-point needle valve and clamped. When the stick body (1) rotates along the midpoint of the two clamping blocks (2) as the axis, the switch valve disc of the four-point needle valve rotates accordingly under the drive of the clamping blocks (2).

2. The four-point needle valve opening tool according to claim 1 is characterized in that: A through hole 1 is provided on the surface of the stick body (1), a threaded rod 1 (3) is fixedly connected to the bottom of the clamping block (2), and the threaded rod 1 (3) passes through the through hole 1 and is fixed to the stick body (1) by screwing a nut 1 (4).

3. The four-point needle valve opening tool according to claim 2 is characterized in that: The number of the through holes 1 is multiple, and the distance between different through holes corresponds to the diameter of the hollow part of the valve disc of different models and sizes.

4. The four-point needle valve opening tool according to claim 1 is characterized in that: A slot is provided at one end of the stick body (1), and a clamping rod (5) is installed in the slot. A bending portion is provided at the end of the clamping rod (5) located outside the slot, and the bending portion is in contact with the inner wall of the hollow portion of the surface of the switch valve disc of the four-point needle valve. The clamping rod (5) and one of the clamping blocks (2) can be simultaneously inserted into the hollow portion of the switch valve disc of the four-point needle valve and clamped. When the stick body (1) rotates along the center of the circle of the switch valve disc of the four-point needle valve as the axis, the switch valve disc rotates accordingly driven by the clamping rod (5) and the clamping block (2).

5. The four-point needle valve opening tool according to claim 4 is characterized in that: The stick body (1) and the clamping rod (5) are provided with corresponding through holes 2, and the clamping rod (5) is fixed to the stick body (1) by screwing in a nut 2 (7) after a threaded rod 2 (6) passes through the stick body (1) along the through hole 2.

6. The four-point needle valve opening tool according to claim 5 is characterized in that: The number of through holes 2 on the stick body (1) is multiple, and the multiple through holes 2 are equidistantly distributed along the insertion direction of the clamping rod (5).

7. The four-point needle valve opening tool according to claim 4 is characterized in that: The slot axially penetrates the stick body (1), and a plurality of rotatable gears (8) are installed in the middle of the slot. An insertion rod (11) capable of moving along the slot is installed at one end of the slot away from the clamping rod (5), and a strip-shaped through groove (10) for a threaded rod (3) to pass through is provided on the surfaces of the insertion rod (11) and the clamping rod (5). The end side walls of the clamping rod (5) and the end side walls of the insertion rod (11) located in the slot are both provided with tooth patterns (9) and are respectively meshed with two sides of the gear (8). Driven by the gear (8), the insertion rod (11) and the clamping rod (5) move toward each other along the extension direction of the slot.

8. The four-point needle valve opening tool according to claim 7 is characterized in that: The stick body (1) and the insertion rod (11) are provided with corresponding through holes three, and the insertion rod (11) is fixed to the stick body (1) by means of a threaded rod two (6) passing through the stick body (1) along the through hole three and then being screwed into a nut two (7), and the number of through holes three on the stick body (1) is multiple.

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