Lever type locking device of valve linear handle, valve linear handle and valve

Abstract

The utility model relates to a valve line-shaped handle lever type locking device, a valve line-shaped handle and a valve, the lever type locking device comprises a locking component, a mounting component and a limiting component, and the locking component comprises a connecting part and a clamping part arranged on the connecting part. The connecting part is used for being arranged on the valve linear handle in a reciprocating motion mode along the valve linear handle, when the locking component is located at the locking position, the clamping part is matched with the valve body in a clamping mode, and when the locking component is located at the unlocking position, the clamping part is separated from the valve body; the mounting part is fixedly arranged on a linear handle of the valve; the limiting component comprises an assembling part, a stop part and an elastic part, the assembling part is rotatably arranged on the mounting component, the stop part is arranged on the assembling part, the elastic part is arranged between the assembling part and the mounting component, and the elastic part is used for applying acting force to the assembling part to enable the position, provided with the stop part, of the assembling part to be close to the linear handle of the valve; therefore, the stopping part has the trend that the distance between the stopping part and the linear handle of the valve is smaller than the minimum preset distance.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a valve lever-type locking device with a single-handle valve, a single-handle valve, and a valve. Background Technology

[0002] Nuclear power plant buildings have limited interior space, and equipment such as pipes, valves, control cabinets, and cables are installed very tightly. Furthermore, equipment is typically distributed across multiple platforms with close proximity between levels. This increases the risk of accidental contact when personnel move through narrow passageways, during complex maintenance or inspections, or in areas with poor lighting or obstructed visibility.

[0003] The investigators discovered that the valve was accidentally touched because it lacked a locking device. Touching the valve handle altered the valve's opening. Conventional isolation methods, such as adding a chain lock to the valve handle, cannot lock a single-handle valve, allowing it to rotate within a certain range. This fails to meet the stringent requirements of nuclear power plants regarding accidental contact. Utility Model Content

[0004] The first objective of this utility model is to provide a lever-type locking device for valves with single-handle handles, so as to lock the valve handles and prevent abnormal changes in valve opening caused by accidental contact with the valve handle during field use, thereby affecting the availability of the system.

[0005] The second objective of this utility model is to provide a valve handle and valve that include the above-mentioned valve handle lever-type locking device.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A valve lever-type locking device with a single-handle handle, comprising:

[0008] A locking component includes a connecting portion and a snap-fit ​​portion disposed on the connecting portion. The connecting portion is configured to reciprocate along the valve handle and is disposed on the valve handle. When the locking component is in the locked position, the snap-fit ​​portion engages with the valve body to prevent the valve handle from rotating relative to the valve body. When the locking component is in the unlocked position, the snap-fit ​​portion disengages from the valve body.

[0009] Mounting components are used to securely attach to the valve handle.

[0010] The limiting component includes an assembly part, a stop part, and an elastic part. The assembly part is rotatably disposed on the mounting component. The stop part is disposed on the assembly part. The elastic part is disposed between the assembly part and the mounting component. The elastic part is used to apply a force to the assembly part, causing the position of the assembly part where the stop part is mounted to move closer to the valve handle, so that the stop part tends to maintain a distance from the valve handle that is less than a minimum preset distance that the locking component can pass through.

[0011] In one embodiment of this application, the connecting part is a ring-shaped structure, the connecting part is sleeved on the valve handle, and the connecting part and the valve handle are in a stop-rotation fit.

[0012] In one embodiment of this application, the snap-fit ​​portion includes two snap-fit ​​plates arranged coplanarly, with a snap-fit ​​groove formed between the two snap-fit ​​plates, and the snap-fit ​​plates are inclined from the end connected to the connecting portion toward the direction away from the valve handle.

[0013] In one embodiment of this application, the valve handle includes a grip, a neck, and a head. The grip and the head are parallel. The two ends of the neck are connected to the grip and the head, respectively, and the neck is inclined relative to the grip and the head.

[0014] In one embodiment of this application, the mounting component includes a base plate and upright plates. The base plate is connected to the gripping part by at least two threaded fasteners. The two upright plates are symmetrically disposed on the base plate. The mounting part is rotatably connected to the two upright plates by a rotating shaft.

[0015] In one embodiment of this application, the elastic part is a compression spring, and the limiting part and the elastic part are respectively disposed on both sides of the rotating shaft of the assembly part.

[0016] In one embodiment of this application, the valve handle is provided with a limiting hole, and the end of the limiting part away from the assembly part is provided with a stepped shaft structure. A limiting step surface is formed between the large end and the small end of the stepped shaft structure. The small end of the stepped shaft structure is used to insert into the limiting hole, and the limiting step surface is used to contact and cooperate with the surface of the valve handle facing the assembly part.

[0017] In one embodiment of this application, one of the connecting part and the valve handle is provided with a spring pin, and the other of the connecting part and the valve handle is provided with a pin groove. The spring pin and the pin groove cooperate to fix the locking component in the locking position.

[0018] A valve handle with a lever-type locking device as described in any of the above claims.

[0019] A valve, wherein the valve handle is a single-handle valve as described above.

[0020] As can be seen from the above technical solution, this utility model discloses a valve lever-type locking device with a single-handle valve. This device includes a locking component, a mounting component, and a limiting component. The locking component includes a connecting portion and a snap-fit ​​portion disposed on the connecting portion. The connecting portion is reciprocally mounted on the valve handle. When the locking component is in the locked position, the snap-fit ​​portion engages with the valve body to prevent the valve handle from rotating relative to the valve body. When the locking component is in the unlocked position, the snap-fit ​​portion disengages from the valve body. The mounting component is fixedly mounted on the valve handle. The limiting component includes an assembly portion, a stop portion, and an elastic portion. The assembly portion is rotatably mounted on the mounting component. The stop portion is disposed on the assembly portion. The elastic portion is disposed between the assembly portion and the mounting component. The elastic portion applies a force to the assembly portion, causing the position where the stop portion is mounted to move towards the valve handle, so that the stop portion tends to maintain a distance from the valve handle that is less than a minimum preset distance that the locking component can pass through.

[0021] In application, the locking component is set to the locked position. At this time, the elastic element is not subjected to external force, ensuring that the distance between the limiting component and the valve handle is less than the minimum preset distance that the locking component can pass through. This prevents the locking component from moving from the locked position to the unlocked position, ensuring that the locking component is stably maintained in the locked position to engage with the valve body and prevent the valve handle from rotating relative to the valve body. When it is necessary to rotate the valve handle, pressure is applied to the assembly part to overcome the force of the elastic element. The assembly part drives the stop part to rotate away from the valve handle, increasing the distance between the stop part and the valve handle to no less than the minimum preset distance. At this time, the gap between the stop part and the valve handle allows the locking component to pass through. Then, the locking component is moved to the unlocked position, causing the locking component to disengage from the valve body. Then, the assembly part is released, allowing it to reset under the action of the elastic element until the distance between the stop part and the valve handle is less than the minimum preset distance that the locking component can pass through. The locking component cannot return to the locked position, ensuring that the valve handle can rotate relative to the valve body.

[0022] As can be seen, the above-mentioned valve lever-type locking device with a single-handle handle is simple to operate, requiring only the manipulation of the limit and locking components. Compared to existing valve lever-type locking devices that require frequent disassembly and reassembly of the outer cover, screws, and locking devices, this device is more convenient for on-site operation, reducing the operational burden on operators. It also ensures stable locking of the valve handle, preventing changes due to external interference during operation, thus guaranteeing stable system operation, reducing safety risks, and minimizing safety hazards and losses caused by accidental valve handle contact. This is particularly important for systems requiring a continuous and stable supply of fluids or gases. Furthermore, the above-mentioned valve lever-type locking device only contacts the valve handle and valve body, without affecting other valve components or surrounding structures. This helps protect the valve and its related components from damage during disassembly, assembly, and use, thereby extending equipment lifespan and reducing maintenance and replacement costs. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 An isometric view of the valve lever-type locking device with a single handle provided in an embodiment of this utility model;

[0025] Figure 2 A front view of the valve lever-type locking device with a single handle provided in an embodiment of this utility model;

[0026] Figure 3 Left view of the valve lever-type locking device with a single handle provided in an embodiment of this utility model;

[0027] Figure 4 A top view of the valve lever-type locking device with a single handle provided in an embodiment of this utility model;

[0028] Figure 5 An exploded view of the valve lever-type locking device with a single handle provided in an embodiment of this utility model.

[0029] In the picture:

[0030] 100 is a lever-type locking device for a valve with a single-handle handle; 110 is a locking component; 111 is a connecting part; 112 is a snap-fit ​​part; 113 is a snap-fit ​​groove; 120 is a mounting component; 121 is a base plate; 122 is a vertical plate; 130 is a limiting component; 131 is an assembly part; 1311 is a first assembly plate; 1312 is a second assembly plate; 132 is a stop part; 133 is an elastic part; 140 is a threaded fastener; 141 is a bolt; 142 is a nut; 150 is a rotating shaft;

[0031] 200 is the valve handle; 210 is the grip; 220 is the neck; 221 is the limiting hole; 222 is the pin groove; 230 is the head. Detailed Implementation

[0032] One of the core features of this utility model is to provide a valve lever-type locking device with a single-handle valve. The structural design of this valve lever-type locking device enables the valve to be locked with a single-handle valve, preventing abnormal changes in valve opening caused by accidental contact with the valve handle during field use, which in turn affects the availability of the system.

[0033] Another core aspect of this utility model is to provide a valve handle and a valve that include the aforementioned valve handle lever-type locking device.

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Please see Figures 1 to 5 .

[0036] This utility model discloses a valve lever-type locking device 100 with a single handle. The valve lever-type locking device 100 includes a locking component 110, a mounting component 120, and a limiting component 130.

[0037] The locking component 110 includes a connecting part 111 and a snap-fit ​​part 112 disposed on the connecting part 111. The connecting part 111 is disposed on the valve handle 200 for reciprocating movement along the valve handle 200. When the locking component 110 is in the locked position, the snap-fit ​​part 112 engages with the valve body to prevent the valve handle 200 from rotating relative to the valve body. When the locking component 110 is in the unlocked position, the snap-fit ​​part 112 disengages from the valve body.

[0038] Mounting component 120 is used to fix the valve handle 200. Mounting component 120 and valve handle 200 can be an integral structure or a separate structure, that is, mounting component 120 and valve handle 200 can be detachably connected.

[0039] The limiting component 130 includes an assembly part 131, a stop part 132, and an elastic part 133. The assembly part 131 is rotatably disposed on the mounting component 120. The stop part 132 is disposed on the assembly part 131. The elastic part 133 is disposed between the assembly part 131 and the mounting component 120. The elastic part 133 is used to apply a force to the assembly part 131, causing the position of the assembly part 131 where the stop part 132 is mounted to move closer to the valve handle 200, so that the stop part 132 tends to maintain a distance from the valve handle 200 that is less than the minimum preset distance through which the locking component 110 can pass.

[0040] In application, the locking component 110 is positioned in the locked position. At this position, the elastic element is not subjected to external force, ensuring that the distance between the limiting component 130 and the valve handle 200 is less than the minimum preset distance that the locking component 110 can pass through. This prevents the locking component 110 from moving from the locked position to the unlocked position, ensuring that the locking component 110 remains stably in the locked position to engage with the valve body and prevent the valve handle 200 from rotating relative to the valve body. When it is necessary to rotate the valve handle 200, pressure is applied to the assembly part 131 to overcome the force of the elastic part 133. The assembly part 131 then moves the stop part 132 away from the valve handle 200. The valve is rotated in the direction of rotation, increasing the distance between the stop part 132 and the valve handle 200 to a minimum preset distance. At this time, the gap between the stop part 132 and the valve handle 200 allows the locking component 110 to pass through. Then, the locking component 110 is moved to the unlocked position, causing the locking component 110 to disengage from the valve body. Then, the assembly part 131 is released, allowing it to reset under the action of the elastic part 133 until the distance between the stop part 132 and the valve handle 200 is less than the minimum preset distance that allows the locking component 110 to pass through. The locking component 110 cannot return to the locked position, thus ensuring that the valve handle 200 can rotate relative to the valve body.

[0041] Compared with the prior art, the valve lever-type locking device 100 provided in this embodiment is simple to operate, requiring only the manipulation of the limiting component 130 and the locking component 110. Compared with the existing valve lever-type locking device 200, which requires frequent disassembly and assembly of the outer cover, screws, and locking devices, this device is more convenient for on-site operation, helps reduce the operational burden on operators, and ensures stable locking of the valve lever 200, preventing it from changing due to external interference during operation. This ensures stable system operation, reduces safety risks, and minimizes safety hazards and losses caused by accidental contact with the valve lever. This is especially important for systems that require a continuous and stable supply of fluids or gases.

[0042] In addition, the valve lever-type locking device 100 mentioned above only contacts the valve handle 200 and the valve body, without affecting other valve components or surrounding components. This helps to protect the valve and its related components from damage during the disassembly, assembly and use of the locking device, thereby extending the service life of the equipment and reducing maintenance and replacement costs.

[0043] The connecting part 111 can be moved and set on the valve handle 200 in a variety of ways. For example, a T-shaped or trapezoidal groove can be set on one of the valve handle 200 and the connecting part 111, and a T-shaped or trapezoidal slider can be set on the other. The T-shaped or trapezoidal slider is slidably embedded in the T-shaped or trapezoidal groove so that the connecting part 111 and the valve handle 200 are movably connected.

[0044] To minimize modifications to the existing valve handle 200 structure and achieve the addition of a valve handle lever-type locking device 100 to the existing valve handle 200, in one specific embodiment of this application, as follows: Figure 1 and Figure 2 As shown, the connecting part 111 has a ring-shaped structure and is sleeved on the valve handle 200. The inner cavity of the connecting part 111 is adapted to the shape of the valve handle 200, so that the connecting part 111 can move back and forth along the length direction of the valve handle 200. The connecting part 111 and the valve handle 200 are in a non-rotational fit to prevent the locking component 110 from rotating relative to the valve handle 200.

[0045] like Figure 1 and Figure 3As shown, in one embodiment of this application, the latching part 112 includes two latching plates arranged coplanarly, with a latching groove 113 formed between the two latching plates. The latching plates are inclined from the end connected to the connecting part 111 away from the valve handle 200. When the locking part 110 is in the locked position, the ends of the two latching plates away from the connecting part 111 abut against the valve body. Since the valve body is not a regular rotating body, when the valve handle 200 has a tendency to rotate relative to the valve body, the two latching plates abutting against the valve body are interfered with by the valve body, thereby preventing the valve handle 200 from rotating. In this way, the valve handle 200 can be locked and limited in both the forward and reverse rotation directions.

[0046] To facilitate the installation of a valve lever-type locking device 100 on the valve handle 200, in one embodiment of this application, the mounting component 120 is detachably connected to the valve handle 200. The detachable connection methods between the mounting component 120 and the valve handle 200 include, but are not limited to, clamps, threaded fasteners 140, and binding.

[0047] like Figure 5 As shown, the valve handle 200 includes a grip portion 210, a neck 220, and a head 230. The grip portion 210 and the head 230 satisfy the parallel condition, that is, the grip portion 210 and the head 230 are parallel or approximately parallel. The two ends of the neck 220 are connected to the grip portion 210 and the head 230 respectively, and the neck 220 is inclined relative to the grip portion 210 and the head 230.

[0048] Mounting component 120 includes base plate 121 and upright plate 122. Base plate 121 is connected to gripping part 210 by at least two threaded fasteners 140. Threaded fasteners 140 include mutually compatible bolts 141 and nuts 142. Bolts 141 pass through through holes on base plate 121 and valve handle 200 and engage with nuts 142 to fix base plate 121 to valve handle 200. Two upright plates 122 are symmetrically arranged on base plate 121. Upright plates 122 can be perpendicular to base plate 121, or the angle between upright plates 122 and base plate 121 can be greater than 90° or less than 90°. Assembly part 131 is rotatably connected to the two upright plates 122 via pivot 150.

[0049] like Figure 1 , Figure 2 and Figure 5As shown, the assembly part 131 includes a first assembly plate 1311 and a second assembly plate 1312. The first assembly plate 1311 and the second assembly plate 1312 are connected in sequence. The first assembly part 131 is rotatably connected to two upright plates 122 through a rotating shaft 150. The second assembly plate 1312 and the neck 220 meet the parallel condition, that is, the second assembly plate 1312 and the neck 220 are parallel or substantially parallel, so as to facilitate the contact and cooperation between the stop part 132 and the neck 220. The stop part 132 is provided on the side surface of the second assembly plate 1312 facing the valve handle 200.

[0050] like Figure 1 , Figure 2 and Figure 5 As shown, in one embodiment of this application, the elastic part 133 is a compression spring, and the limiting part and the elastic part 133 are respectively disposed on both sides of the rotating shaft 150 of the assembly part 131. Of course, it should be noted that in other embodiments, the elastic part 133 can also be a tension spring. It is only necessary to install the tension spring and the stop part 132 on the same side of the rotating shaft 150. Alternatively, the elastic part 133 can also be a torsion spring. The main body of the torsion spring is sleeved on the rotating shaft 150, one arm of the torsion spring abuts against the assembly part 131, and the other arm abuts against the mounting part 120 or the valve handle 200.

[0051] To ensure the stability of the compression spring, limiting support columns are respectively provided on the first assembly plate 1311 and the base plate 121. The two ends of the compression spring are respectively sleeved on the two limiting support columns. In this way, during the compression spring compression process, the two limiting support columns can limit the two ends of the compression spring to prevent the two ends of the compression spring from moving.

[0052] The stop part 132 is columnar, rod-shaped or tubular, and its cross-section includes, but is not limited to, circular, polygonal, elliptical or irregular shapes.

[0053] In one embodiment of this application, such as Figure 5 As shown, the valve handle 200 is provided with a limiting hole 221. In the illustrated embodiment, the limiting hole 221 is provided at the neck 220 of the valve handle 200. The end of the limiting part away from the assembly part 131 is provided with a stepped shaft structure. A limiting step surface is formed between the large end and the small end of the stepped shaft structure. The small end of the stepped shaft structure is used to insert into the limiting hole 221. The limiting step surface is used to contact and cooperate with the surface of the valve handle 200 facing the assembly part 131. This can limit the stop part 132 axially and radially, prevent it from swinging, and keep it stable when limiting the locking part 110, so as to achieve a better stopping and limiting effect.

[0054] To further optimize the above technical solution and improve the stability of the locking component 110, such as... Figure 5As shown, one of the connecting part 111 and the valve handle 200 is provided with a spring pin, and the other of the connecting part 111 and the valve handle 200 is provided with a pin groove 222. The spring pin and the pin groove 222 cooperate to fix the locking component 110 in the locked position. When the operator applies a force to the locking component 110 to move it from the locked position to the unlocked position to a certain magnitude, the spring pin is forced to retract, and the locking component 110 can reciprocate relative to the valve handle 200. That is, at least one of the spring pin head and the pin groove 222 is a hemispherical structure.

[0055] This application embodiment also provides a valve handle 200, which is equipped with a valve handle lever-type locking device 100 as described in the above embodiments. This application embodiment also provides a valve whose handle is the valve handle 200 as described above. Since both the valve handle 200 and the valve employ the valve handle lever-type locking device 100 as described in the above embodiments, the technical effects of the valve handle 200 and the valve can be found in the above embodiments.

[0056] As indicated in this application and claims, unless the context clearly indicates otherwise, the words "a," "an," "a," and / or "the" are not specifically singular and may include the plural. Generally, the terms "comprising" and "including" only indicate the inclusion of expressly identified steps and elements, which do not constitute an exclusive list, and the method or apparatus may also include other steps or elements. An element defined by the phrase "comprising an..." does not exclude the presence of other identical elements in the process, method, product, or apparatus that includes the element.

[0057] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0058] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0059] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A valve lever-type locking device with a single-handle handle, characterized in that, include: A locking component (110) includes a connecting part (111) and a snap-fit ​​part (112) disposed on the connecting part (111). The connecting part (111) is disposed on the valve handle (200) for reciprocating along the valve handle (200). When the locking component (110) is in the locked position, the snap-fit ​​part (112) engages with the valve body to prevent the valve handle (200) from rotating relative to the valve body. When the locking component (110) is in the unlocked position, the snap-fit ​​part (112) disengages from the valve body. Mounting component (120) is used to fix it to the valve handle (200); The limiting component (130) includes an assembly part (131), a stop part (132), and an elastic part (133). The assembly part (131) is rotatably disposed on the mounting component (120). The stop part (132) is disposed on the assembly part (131). The elastic part (133) is disposed between the assembly part (131) and the mounting component (120). The elastic part (133) is used to apply a force to the assembly part (131) so that the position of the assembly part (131) where the stop part (132) is mounted moves toward the valve handle (200), so that the stop part (132) tends to maintain a distance from the valve handle (200) that is less than a minimum preset distance that the locking component (110) can pass through.

2. The valve lever-type locking device with a single-handle handle according to claim 1, characterized in that, The connecting part (111) is a ring structure. The connecting part (111) is sleeved on the valve handle (200), and the connecting part (111) and the valve handle (200) are in a stop-rotation fit.

3. The valve lever-type locking device with a single-handle handle according to claim 1, characterized in that, The snap-fit ​​part (112) includes two snap-fit ​​plates arranged on the same plane, and a snap-fit ​​groove (113) is formed between the two snap-fit ​​plates. The snap-fit ​​plates are inclined from the end connected to the connecting part (111) away from the valve handle (200).

4. The valve lever-type locking device with a single-handle handle according to any one of claims 1-3, characterized in that, The valve handle (200) includes a grip (210), a neck (220), and a head (230). The grip (210) and the head (230) are parallel. The two ends of the neck (220) are connected to the grip (210) and the head (230) respectively, and the neck (220) is inclined relative to the grip (210) and the head (230).

5. The valve lever-type locking device with a single-handle handle according to claim 4, characterized in that, The mounting component (120) includes a base plate (121) and upright plates (122). The base plate (121) is connected to the gripping part (210) by at least two threaded fasteners (140). The two upright plates (122) are symmetrically arranged on the base plate (121). The assembly part (131) is rotatably connected to the two upright plates (122) by a rotating shaft.

6. The valve lever-type locking device with a single-handle handle according to any one of claims 1-3, characterized in that, The elastic part (133) is a compression spring, and the limiting part and the elastic part (133) are respectively disposed on both sides of the rotating shaft of the assembly part (131).

7. The valve lever-type locking device with a single-handle handle according to claim 6, characterized in that, The valve handle (200) is provided with a limiting hole. The end of the limiting part away from the assembly part (131) is provided with a stepped shaft structure. A limiting step surface is formed between the large end and the small end of the stepped shaft structure. The small end of the stepped shaft structure is used to insert into the limiting hole. The limiting step surface is used to contact and cooperate with the surface of the valve handle (200) facing the assembly part (131).

8. The valve lever-type locking device with a single-handle handle according to claim 6, characterized in that, One of the connecting part (111) and the valve handle (200) is provided with a spring pin, and the other of the connecting part (111) and the valve handle (200) is provided with a pin groove. The spring pin and the pin groove cooperate to fix the locking component (110) in the locking position.

9. A valve handle with a single-handle design, characterized in that, The valve handle (200) is provided with a valve handle lever-type locking device as described in any one of claims 1-8.

10. A valve, characterized in that, The valve handle is a flat handle (200) as described in claim 9.

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