Tool for opening and closing needle valve

Abstract

The utility model provides a tool for opening and closing a needle valve, and relates to the field of valve auxiliary tools, and the tool comprises a clamp which is provided with a clamping groove matched with the outer contour of a valve handle and is used for clamping the valve handle; the operating rod is used as a power arm for screwing a valve handle and is in sliding connection with the clamp, and the length of the power arm can be adjusted by sliding the operating rod; and the connecting assembly is used for connecting the clamp and the operating rod. The valve has the effect of being convenient to open and close.

Description

Technical Field

[0001] The present application relates to the technical field of valve auxiliary tools, and in particular to a tool for needle valve switching. Background Art

[0002] Among the various types of equipment in natural gas transmission stations, needle valves are used to more accurately control the flow of natural gas. They usually include a valve body, a needle valve core, and a handle. The needle valve core is threadedly connected to the valve body, and the handle is fixedly connected to the end of the needle valve core away from the valve body. The handle is usually a handwheel type or a straight type. When using a needle valve, by turning the handle, the needle valve core can be driven to move closer to or away from the valve body channel, thereby controlling the degree of opening of the valve body channel. Since the valve core and the valve body of the needle valve have a high degree of sealing, when the handle is manually turned, the friction between the valve core and the valve body is large, and it is more laborious to turn. In order to facilitate turning the handle, tools are usually required to better open or close the needle valve and reduce the possibility of the valve not being closed tightly, causing major safety accidents.

[0003] In the related art, an F-type wrench is usually used to rotate the needle valve. The caliper at the end of the wrench clamps the needle valve handle, and force is applied to the end of the wrench away from the needle valve, so that the wrench drives the handle to rotate, and the handle drives the valve core to rotate. Through the principle of leverage, a labor-saving effect is achieved, so that the valve can be easily opened and closed.

[0004] Regarding the above-mentioned related technologies, since the pipelines in the natural gas station are relatively complicated, when using an F-type wrench, it is easy to have difficulty in opening and closing the valve due to insufficient working space. Utility Model Content

[0005] In order to improve the problem that it is difficult to open and close the valve due to insufficient working space, the present application provides a tool for opening and closing a needle valve.

[0006] The present application provides a tool for needle valve switching using the following technical solution:

[0007] A tool for needle valve switching, comprising

[0008] A clamp is provided with a slot adapted to the outer contour of the valve handle and is used for clamping the valve handle;

[0009] An operating rod, used as a power arm for turning the valve handle, is slidably connected to the clamp, and sliding the operating rod can adjust the length of the power arm; and

[0010] A connecting assembly is used to connect the clamp and the operating rod.

[0011] Furthermore, the operating rod is detachably connected to the clamp.

[0012] Furthermore, the connecting assembly includes a connecting rod and a connecting block, one end of the connecting rod is connected to a side of the clamp away from the needle valve, and the other end is connected to the connecting block, and the connecting block is movably connected to the operating rod.

[0013] Furthermore, the operating rod is provided with a sliding groove along its length direction, and the connecting block can be inserted into the sliding groove and slide along the sliding groove.

[0014] Furthermore, both side walls of the connecting block along its sliding direction are provided with balls, the side walls of the slide groove are provided with guide grooves, the guide grooves are arranged along the length direction of the slide groove, and the ball rolling parts are embedded in the guide grooves.

[0015] Furthermore, the connecting block is provided with a receiving groove, and the ball slides along the receiving groove, and the sliding direction is close to or away from the guide groove. A clamping spring is provided in the receiving groove for driving the ball to slide close to the guide groove, and the notch of the receiving groove is provided with a limiting portion for limiting the ball from escaping from the receiving groove.

[0016] Furthermore, the connecting rod includes a first rod body and a second rod body arranged parallel to each other, one end of the first rod body is connected to the clamp, and the other end is slidably connected to the second rod body, and the sliding direction is along its own length direction. The end of the second rod body away from the first rod body is connected to the connecting piece, and the first rod body is provided with a locking assembly, which is used to lock or release the second rod body.

[0017] Furthermore, the locking assembly includes a locking block and a locking spring, the locking block is slidably connected to the first rod body, one end of the locking spring is connected to the first rod body, and the other end is connected to the locking block, the second rod body is provided with a plurality of holes at intervals along its length direction, and the locking spring is used to drive the locking block to be plugged into the holes.

[0018] In summary, the present application includes at least one of the following beneficial technical effects:

[0019] 1. By setting the clamp and operating rod, when opening and closing the needle valve, the clamp is used to clamp the valve handle, and the sliding operating rod is used to adjust the longest power arm to adapt to the on-site working environment, thereby reducing the possibility of difficulty in opening and closing the valve due to insufficient working space;

[0020] 2. By setting the connection block, the slide groove, the ball, the pressing spring and the guide groove, when the operating rod is slid, the slide groove limits the connection block, the ball can reduce the friction force when the connection block slides, the guide groove can embed the ball, and reduce the possibility of the connection block detaching from the slide groove, and the pressing spring can make the ball sink into the connection block, so that the connection block is easy to remove from the operating rod;

[0021] 3. By setting the first rod body, the second rod body and the locking assembly, the second rod body slides along the first rod body, and the locking assembly locks or releases the second rod body, which is convenient for adjusting the length of the connecting rod, so that the distance between the operating rod and the valve body is adjustable, so that the operating rod can be adjusted to a wider operating environment, further facilitating the opening and closing of the valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0024] Figure 2 is a schematic cross-sectional structural diagram of an embodiment of the present application;

[0025] Figure 3 is a cross-sectional view of a connection block according to an embodiment of the present application;

[0026] Figure 4 yes Figure 3 A magnified schematic diagram of part A;

[0027] Figure 5 It is a cross-sectional view of a connecting rod according to an embodiment of the present application.

[0028] Figure numerals: 1. valve; 11. valve body; 12. handle; 2. clamp; 21. slot; 3. operating lever; 31. slide slot; 32. guide slot; 4. connecting assembly; 41. first rod body; 411. limit slot; 42. second rod body; 421. socket; 422. limit strip; 43. connecting block; 431. accommodating slot; 432. limit part; 44. ball; 45. tightening spring; 5. locking assembly; 51. locking block; 52. locking spring. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on 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.

[0030] The present application embodiment discloses a tool for needle valve switch. Figure 1The tool for switching the needle valve includes a clamp 2 and an operating rod 3. The clamp 2 is provided with a slot 21 adapted to the outer contour of the handle 12 of the valve 1 and is used to clamp the handle 12 of the valve 1. The operating rod 3 is used as a power arm for twisting the handle 12. In order to find an operating space that is convenient for rotating the operating rod 3 in a complex natural gas pipeline, the operating rod 3 is slidably connected to the clamp 2. By sliding the operating rod 3, the length of the power arm for twisting the handle 12 can be changed, making the tool more flexible and able to adjust the longest power arm according to the on-site working environment, thereby facilitating the switching of the valve 1.

[0031] Reference Figure 1 , the handle 12 is in the shape of a straight line, that is, the handle 12 is a round rod arranged horizontally, and the clamp 2 is a C-shaped arc plate with the opening facing downward, and the inner contour of the C-shaped arc plate is the card slot 21, and the inner diameter of the card slot 21 is the same as the diameter of the handle 12. When the clamp 2 clamps the handle 12, the handle 12 is inserted into the card slot 21 of the clamp 2, and the clamp 2 is driven to rotate along the vertical axis, and the clamp 2 can drive the handle 12 to rotate, thereby realizing the opening and closing of the valve 1. As an alternative embodiment, when the handle 12 of the valve 1 is a plum blossom handle 12, the clamp 2 can be set to a cylindrical shape, and the card slot 21 is a plum blossom shape that matches the handle 12. When the handle 12 is inserted into the card slot 21, the clamp 2 can clamp the handle 12.

[0032] In order to facilitate replacement of the clamp 2 of different shapes and specifications and to improve the applicability of the tool, the operating rod 3 is detachably connected to the clamp 2 , and a connecting component 4 is provided between the operating rod 3 and the clamp 2 .

[0033] Specifically, refer to Figure 2 The connecting assembly 4 includes a connecting rod and a connecting block 43. The length direction of the connecting rod is parallel to the rotation axis of the handle 12. One end of the connecting rod is fixedly connected to the clamp 2 by a bolt, and the other end is welded to the connecting block 43. The connecting block 43 is a rectangular block. A slide groove 31 is provided on the side of the operating rod 3 close to the clamp 2. The slide groove 31 is arranged along the length direction of the operating rod 3. The connecting block 43 can be inserted into the slide groove 31 and can slide along the slide groove 31.

[0034] In order to facilitate the sliding of the connecting block 43, a plurality of balls 44 are provided on both sides of the connecting block 43. In this embodiment, four balls 44 are provided on each side of the connecting block 43, and the four balls 44 are distributed in a rectangular shape of two rows and two columns. A guide groove 32 is provided on the inner side wall of the slide groove 31 along its own length direction. The guide groove 32 is provided along the length direction of the slide groove 31. The slide groove 31 is an arc groove with the same diameter as the ball 44, and the ball 44 can be partially embedded in the slide groove 31. In this embodiment, two guide grooves 32 are provided on both sides of the slide groove 31. The two guide grooves 32 correspond to the positions of the two rows of balls 44, so that all the balls 44 can be embedded in the guide grooves 32. The guide grooves 32 are provided to limit the balls 44, thereby reducing the possibility of the balls 44 escaping from the slide groove 31. During the actual installation process, one end of the slide groove 31 can be opened to facilitate sliding the connecting block 43 equipped with the ball 44 into the slide groove 31 along the open end of the slide groove 31, thereby realizing a detachable connection between the connecting block 43 and the operating rod 3.

[0035] In actual operation, it is inconvenient to slide the connecting block 43 into the sliding groove 31 from the end of the sliding groove 31. Therefore, in this embodiment, the ball 44 is retractably arranged in the connecting block 43 so that the connecting block 43 can be inserted into the sliding groove 31 perpendicular to the length direction of the sliding groove 31. Figure 3 The connecting block 43 is provided with a receiving groove 431 near the ball 44. The receiving groove 431 is a circular groove with the same diameter as the ball 44. At least half of the volume of the ball 44 is located in the receiving groove 431. A clamping spring 45 is provided between the ball 44 and the bottom of the receiving groove 431. One end of the clamping spring 45 is in contact with the bottom of the receiving groove 431, and the other end is in contact with the ball 44. In order to prevent the ball 44 from escaping from the receiving groove 431 under the push of the clamping spring 45, a limiting portion 432 is provided at the opening of the receiving groove 431 (refer to Figure 4 ), the limiting portion 432 is annular, the limiting portion 432 is clamped with the connecting block 43, and one end of the limiting portion 432 close to the bottom of the accommodating groove 431 is adapted to the shape of the ball 44, thereby reducing the influence of the limiting portion 432 on the rotation of the ball 44.

[0036] In order to further enhance the flexibility of the device, in this embodiment, the connecting rod is set as a telescopic rod, so that the distance between the operating rod 3 and the clamp 2 can be adjusted, so that the operating rod 3 can avoid some obstacles and find a space suitable for operation.

[0037] Reference Figure 2The operating rod 3 includes a first rod body 41 and a second rod body 42. The first rod body 41 is a round rod, and the second rod body 42 is a cylinder. The inner diameter of the second rod body 42 is the same as the outer diameter of the first rod body 41. One end of the first rod body 41 is fixedly connected to the clamp 2 by a bolt, and the other end is inserted into the second rod body 42 and slidably connected to the second rod body 42. A locking assembly 5 is provided on the first rod body 41 for locking or releasing the second rod body 42.

[0038] In order to prevent the second rod body 42 from rotating relative to the first rod body 41, a limiting strip 422 is provided inside the second rod body 42 along its length direction, and a limiting groove 411 is provided inside the first rod body 41 along its length direction. The limiting groove 411 is adapted to the shape of the limiting strip 422. When the second rod body 42 slides relative to the first rod body 41, the limiting strip 422 slides in the limiting groove 411.

[0039] Reference Figure 5 The locking assembly 5 includes a locking block 51 and a locking spring 52. The locking block 51 is a cylindrical block. The first rod body 41 is provided with a locking groove perpendicular to its length direction. The locking groove is a circular groove with the same diameter as the locking block 51. The locking groove is located at the end of the first rod body 41 away from the clamp 2. The locking spring 52 is located between the locking block 51 and the bottom of the locking groove. The two ends of the locking spring 52 are respectively bonded to the locking block 51 and the bottom of the locking groove. The second rod body 42 is provided with a plurality of jacks 421 at equal intervals along its length direction. The diameter of the jacks 421 is the same as that of the locking block 51. As the second rod body 42 slides, the locking block 51 can be inserted into any jack 421 under the push of the locking spring 52. The end of the locking block 51 away from the locking groove is set to be hemispherical to improve the comfort of the user pressing the locking block 51 and facilitate the insertion of the locking block 51 into the jack 421.

[0040] When the length of the connecting rod needs to be adjusted, the locking block 51 is pressed so that the locking block 51 is immersed in the locking groove, and the second rod body 42 can be freely slid. When the locking block 51 reaches the position of another socket 421, the locking block 51 is plugged into the socket 421 under the drive of the locking spring 52 to lock the second rod body 42, which is relatively convenient to operate.

[0041] The implementation principle of a tool for needle valve switching in an embodiment of the present application is as follows: the handle 12 of the valve 1 is clamped by the clamp 2, and the operating rod 3 serves as a power arm for facilitating the rotation of the handle 12. The operating rod 3 is detachably connected to the clamp 2 through a connecting rod and a connecting block 43, and the operating rod 3 can slide relative to the clamp 2, so that the operating rod 3 can flexibly adjust its position to find an operating space that is convenient for rotating the operating rod 3, thereby facilitating the switching of the valve 1; the connecting rod is telescopically arranged to facilitate the adjustment of the distance between the operating rod 3 and the clamp 2, thereby further improving the flexibility of the tool, so that the operating rod 3 can avoid obstacles and be adjusted to a better operating position, thereby further facilitating the switching of the valve 1.

[0042] 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 aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A tool for needle valve switching, characterized in that: include A clamp is provided with a slot adapted to the outer contour of the valve handle and is used for clamping the valve handle; An operating rod, used as a power arm for turning the valve handle, is slidably connected to the clamp, and sliding the operating rod can adjust the length of the power arm; as well as The connecting assembly is used to connect the clamp and the operating rod.

2. A tool for needle valve switching according to claim 1, characterized in that: The operating rod is detachably connected to the clamp.

3. A tool for needle valve switching according to claim 2, characterized in that: The connecting assembly comprises a connecting rod and a connecting block, one end of the connecting rod is connected to a side of the clamp away from the needle valve, and the other end is connected to the connecting block, and the connecting block is movably connected to the operating rod.

4. A tool for needle valve switching according to claim 3, characterized in that: The operating rod is provided with a sliding groove along its length direction, and the connecting block can be inserted into the sliding groove and slide along the sliding groove.

5. A tool for needle valve switching according to claim 4, characterized in that: The two side walls of the connecting block along its sliding direction are both provided with balls, the side walls of the sliding groove are provided with guide grooves, the guide grooves are arranged along the length direction of the sliding groove, and the ball rolling parts are embedded in the guide grooves.

6. A tool for needle valve switching according to claim 5, characterized in that: The connecting block is provided with a receiving groove, and the ball slides along the receiving groove, and the sliding direction is close to or away from the guide groove. A clamping spring is provided in the receiving groove for driving the ball to slide close to the guide groove, and the notch of the receiving groove is provided with a limiting portion for limiting the ball from leaving the receiving groove.

7. A tool for needle valve switch according to any one of claims 3 to 6, characterized in that: The connecting rod includes a first rod body and a second rod body arranged parallel to each other, one end of the first rod body is connected to the clamp, and the other end is slidably connected to the second rod body, and the sliding direction is along its own length direction. The end of the second rod body away from the first rod body is connected to the connecting piece, and a locking assembly is provided on the first rod body, and the locking assembly is used to lock or release the second rod body.

8. A tool for needle valve switching according to claim 7, characterized in that: The locking assembly includes a locking block and a locking spring, wherein the locking block is slidably connected to the first rod body, one end of the locking spring is connected to the first rod body, and the other end is connected to the locking block, and the second rod body is provided with a plurality of insertion holes at intervals along its length direction, and the locking spring is used to drive the locking block to be plugged into the insertion holes.

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