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

Abstract

The utility model relates to a valve line-shaped handle screw type locking device, a valve line-shaped handle and a valve, the screw type locking device comprises a locking part, an installation part and a limiting part, the locking part is arranged on the valve line-shaped handle in a reciprocating motion mode along the valve line-shaped handle, and the locking part is matched with a valve body in a clamping mode when located at a locking position. The locking component is separated from a valve body when located at the unlocking position, the installation component is used for being fixedly arranged on a valve linear handle, the limiting component is arranged on the installation component in a spiral feeding mode, and when the limiting component is spirally fed to the valve linear handle till the distance between the limiting component and the valve linear handle is smaller than the minimum preset distance for the locking component to pass through, the locking component is unlocked. And when the limiting component is spirally fed in the direction far away from the linear handle of the valve till the distance between the limiting component and the linear handle of the valve is larger than or equal to the minimum preset distance, the locking component can reciprocate between the locking position and the unlocking position.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a valve single-handle spiral locking device, a valve single-handle 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 valve single-handle spiral locking device, which enables the valve single-handle to be locked, thereby preventing abnormal changes in valve opening caused by accidental contact with the valve handle during field use, which would affect 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 screw-locking device.

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

[0007] A valve single-handle screw-type locking device includes:

[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] A limiting component is helically fed onto the mounting component. When the limiting component helically feeds toward the valve handle until the distance between the limiting component and the valve handle is less than a minimum preset distance that the locking component can pass through, the locking component is prevented from reciprocating between the locked position and the unlocked position. When the limiting component helically feeds away from the valve handle until the distance between the limiting component and the valve handle is greater than or equal to the minimum preset distance, the locking component can reciprocate between the locked position and the unlocked position.

[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. The neck is inclined relative to the grip and the head. The mounting component includes a base and an assembly. The base is detachably connected to the grip. The first end of the assembly is connected to the base. The second end of the assembly extends above the neck. The limiting component is disposed at the second end of the assembly.

[0014] In one embodiment of this application, the base includes a substrate and a vertical plate. The substrate and the gripping portion are connected by at least two threaded fasteners. One end of the vertical plate is connected to the substrate, and the other end stands upright away from the substrate. The assembly portion includes a first assembly plate and a second assembly plate. A first end of the first assembly plate is connected to the vertical plate, and a second end of the first assembly plate extends toward the neck. The second assembly plate is connected to the second end of the first assembly plate, and the second assembly plate, as the second end of the assembly portion, satisfies the parallel condition with the neck.

[0015] In one embodiment of this application, the limiting component includes:

[0016] A fastener is fixed to the second assembly plate, and the fastener is provided with a guide groove that extends along the feed direction;

[0017] A rotating component, which is rotatably sleeved on the fixed component, and the rotating component is provided with a spiral groove extending spirally along the feed direction;

[0018] The feed member is slidably disposed within the fixed member along the feed direction. The feed member is provided with a drive guide rod, which passes through the guide groove and slides in cooperation with the spiral groove.

[0019] In one embodiment of this application, the fixing member is provided with limiting grooves communicating with the guide groove at both ends of the guide groove. The limiting grooves extend away from the guide groove along a preset direction, and the preset direction is set at an angle to the feed direction.

[0020] In one embodiment of this application, a limiting hole is provided at the position of the neck facing the feed member, and the limiting hole is used to cooperate with the feed member.

[0021] A valve handle with a single-handle design, wherein the valve handle is provided with a valve handle screw-type locking device as described in any of the above claims.

[0022] A valve, wherein the valve handle is a single-handle valve as described above.

[0023] As can be seen from the above technical solution, this utility model discloses a valve single-handle spiral locking device, which includes a locking component, a mounting component, and a limiting component. The locking component includes a connecting part and a locking portion disposed on the connecting part. The connecting part is used to reciprocate along the valve single-handle and is mounted on the valve single-handle. When the locking component is in the locked position, the locking portion engages with the valve body to prevent the valve single-handle from rotating relative to the valve body. When the locking component is in the unlocked position, the locking portion engages with the valve body. When the valve body is detached, the mounting component is used to fix it to the valve handle. The limiting component is spirally fed to the mounting component. When the limiting component spirally feeds towards the valve handle until the distance between the limiting component and the valve handle is less than the minimum preset distance that the locking component can pass through, it prevents the locking component from reciprocating between the locked and unlocked positions. When the limiting component spirally feeds away from the valve handle until the distance between the limiting component and the valve handle is greater than or equal to the minimum preset distance, the locking component can reciprocate between the locked and unlocked positions.

[0024] In application, the locking component is set to the locked position, 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 remains stably 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, the limiting component is manipulated to increase the distance between the limiting component and the valve handle to no less than the minimum preset distance. At this point, the gap between the limiting component and the valve handle allows the locking component to pass through. Then, the locking component is moved to the unlocked position to disengage it from the valve body. The limiting component is then manipulated again until the distance between the limiting component 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.

[0025] As can be seen, the aforementioned valve single-handle screw-type locking device is simple to operate, requiring only the manipulation of the limit and locking components. Compared to existing valve single-handle locking devices that require frequent disassembly and reassembly of the outer cover, screws, and locking devices, it is more convenient for on-site operation, helping to reduce the operational burden on operators. It also ensures stable locking of the valve single-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 aforementioned valve single-handle screw-type locking device only contacts the valve single-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

[0026] 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.

[0027] Figure 1 An isometric view of the valve single-handle screw-type locking device provided in an embodiment of this utility model;

[0028] Figure 2 Front view of the valve single-handle spiral locking device provided in the embodiment of this utility model;

[0029] Figure 3Left view of the valve single-handle spiral locking device provided in this embodiment of the utility model;

[0030] Figure 4 A top view of a valve single-handle spiral locking device provided in an embodiment of this utility model;

[0031] Figure 5 An exploded view of the valve single-handle spiral locking device provided in an embodiment of this utility model.

[0032] In the picture:

[0033] 100 is a single-handle spiral locking device for valves; 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 base; 121 is a base plate; 122 is a vertical plate; 130 is an assembly part; 131 is a first assembly plate; 132 is a second assembly plate; 140 is a limiting component; 141 is a fixing component; 1411 is a guide groove; 1412 is a limiting groove; 142 is a rotating component; 1421 is a spiral groove; 143 is a feeding component; 1431 is a drive guide rod; 150 is a threaded fastener; 151 is a bolt; 152 is a nut;

[0034] 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

[0035] One of the core features of this invention is to provide a valve single-handle spiral locking device. The structural design of this valve single-handle spiral locking device enables the valve single-handle to be locked, preventing abnormal changes in valve opening caused by accidental contact with the valve handle during field use, thereby affecting the availability of the system.

[0036] Another core aspect of this utility model is to provide a valve handle and a valve that includes the aforementioned valve handle screw-type locking device.

[0037] 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.

[0038] Please see Figures 1 to 5 .

[0039] This utility model discloses a valve single-handle spiral locking device 100, which includes a locking component 110, a mounting component, and a limiting component 140.

[0040] 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.

[0041] The mounting component is used to fix the valve handle 200. The mounting component and the valve handle 200 can be an integral structure or a separate structure, that is, the mounting component and the valve handle 200 can be detachably connected.

[0042] The limiting component 140 is spirally fed onto the mounting component, meaning that the limiting component 140 can convert the spiral motion into linear reciprocating movement in a preset direction to adjust the gap between the limiting component 140 and the valve handle 200. When the limiting component 140 spirally feeds toward the valve handle 200 until the distance between the limiting component 140 and the valve handle 200 is less than the minimum preset distance that the locking component 110 can pass through, it prevents the locking component 110 from reciprocating between the locked position and the unlocked position. When the limiting component 140 spirally feeds away from the valve handle 200 until the distance between the limiting component 140 and the valve handle 200 is greater than or equal to the minimum preset distance, the locking component 110 can reciprocate between the locked position and the unlocked position.

[0043] In application, the locking component 110 is positioned in the locked position, and the distance between the limiting component 140 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, the limiting component 140 is manipulated to make the limiting component 140 engage with the valve handle 200. The gap between the limit component 140 and the valve handle 200 is increased to a minimum preset distance. At this time, the gap between the limit component 140 and the valve handle 200 is sufficient for the locking component 110 to pass through. The locking component 110 is then moved to the unlocked position to disengage it from the valve body. The limit component 140 is then manipulated to make the gap between the limit component 140 and the valve handle 200 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.

[0044] Compared with the prior art, the valve single-handle spiral locking device 100 provided in this embodiment is simple to operate, requiring only the manipulation of the limiting component 140 and the locking component 110. Compared with the existing valve single-handle 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 single-handle 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 handle. This is especially important for systems that require a continuous and stable supply of fluids or gases.

[0045] In addition, the above-mentioned valve single-handle spiral locking device 100 only contacts the valve single-handle 200 and the valve body, without affecting other valve components and 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.

[0046] 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.

[0047] To minimize modifications to the existing valve handle 200 structure and achieve the addition of a valve handle screw-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.

[0048] like Figure 1 and Figure 3 As 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.

[0049] To facilitate the installation of a valve handle screw-type locking device 100 on the valve handle 200, in one embodiment of this application, the mounting component is detachably connected to the valve handle 200. The detachable connection methods between the mounting component and the valve handle 200 include, but are not limited to, clamps, threaded fasteners 150, and binding.

[0050] 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.

[0051] Accordingly, the mounting component includes a base 120 and an assembly 130. The base 120 is detachably connected to the grip 210. The first end of the assembly 130 is connected to the base 120, and the second end of the assembly 130 extends above the neck 220. A limiting member 140 is disposed at the second end of the assembly 130.

[0052] Specifically, such as Figure 1 , Figure 2 and Figure 5 As shown, the base 120 includes a base plate 121 and a vertical plate 122. The base plate 121 is connected to the grip portion 210 by at least two threaded fasteners 150. The threaded fasteners 150 include bolts 151 and nuts 152. The bolts 151 pass through the through holes on the base plate 121 and the valve handle 200 and cooperate with the nuts 152 to fix the base plate 121 to the valve handle 200.

[0053] One end of the upright plate 122 is connected to the substrate 121, and the other end stands upright away from the substrate 121. The upright plate 122 can be perpendicular to the substrate 121, or the angle between the upright plate 122 and the substrate 121 is greater than 90° or less than 90°. The assembly part 130 includes a first assembly plate 131 and a second assembly plate 132. The first end of the first assembly plate 131 is connected to the upright plate 122. The second end of the first assembly plate 131 extends toward the neck 220. The second assembly plate 132 is connected to the second end of the first assembly plate 131. The second assembly plate 132, as the second end of the assembly part 130, satisfies the parallel condition with the neck 220, that is, the second assembly plate 132 is parallel or substantially parallel to the neck 220.

[0054] like Figure 1 , Figure 2 and Figure 5 As shown, in one embodiment of this application, the limiting component 140 includes a fixing member 141, a rotating member 142, and a feeding member 143. The fixing member 141 is fixed to the second assembly plate 132 and is provided with a guide groove 1411 that extends along the feeding direction. The rotating member 142 is rotatably sleeved on the outside of the fixing member 141 and is provided with a spiral groove 1421 that extends spirally along the feeding direction. The feeding member 143 is reciprocally slidably disposed in the fixing member 141 along the feeding direction and is provided with a drive guide rod 1431 that passes through the guide groove 1411 and slides with the spiral groove 1421.

[0055] Specifically, the fastener 141 includes a fixed sleeve and a fixed cap. The fixed cap is disposed at one end of the fixed sleeve. The second assembly plate 132 is provided with an assembly hole for the fixed sleeve to pass through. After the fixed sleeve passes through the second assembly plate 132, the fixed cap and / or the fixed sleeve are fixedly connected. The guide groove 1411 is disposed on the fixed sleeve along the feed direction.

[0056] The rotating component 142 is sleeve-shaped and is rotatably fitted onto the outside of the fixed sleeve, such as... Figure 5As shown, the spiral groove 1421 penetrates the cylinder wall of the rotating component 142, and the spiral groove 1421 extends from one end of the rotating component 142 along the axial direction of the rotating component 142 to the other end of the rotating component 142, thereby giving the rotating component 142 a certain degree of elasticity and facilitating installation.

[0057] The feed member 143 is cylindrical and is reciprocally mounted inside the fixed sleeve. The drive guide rod 1431 is mounted on the outer wall of the feed member 143 and extends through the guide groove 1411 into the spiral groove 1421.

[0058] In application, when the rotating component 142 is rotated, the spiral groove 1421 cooperates with the drive guide rod 1431, which can push the drive guide rod 1431 to move back and forth along the guide groove 1411, thereby realizing the spiral feed of the limiting component 140.

[0059] To further optimize the above technical solution, the fixing member 141 is provided with limiting grooves 1412 at both ends of the guide groove 1411, which are connected to the guide groove 1411. The limiting grooves 1412 extend away from the guide groove 1411 along a preset direction. The preset direction is set at an angle to the feed direction. When the drive guide rod 1431 moves to both ends of the guide groove 1411, the rotating member 142 is rotated to push the drive guide rod 1431 into the limiting groove 1412 to limit the drive guide rod 1431.

[0060] like Figure 5 As shown, a limiting hole 221 is provided at the position of the neck 220 facing the feed member 143. The limiting hole 221 is used to cooperate with the feed member 143 to radially limit the feed member 143 and prevent it from swinging, thereby achieving a better limiting effect.

[0061] The end of the feed member 143 extending to the rotating member 142 is also provided with an annular limiting boss. The surface of the annular limiting boss facing the neck 220 is used to cooperate with the surface of the neck 220 facing the second assembly plate 132 around the limiting hole 221 after the feed member 143 is inserted into the limiting hole 221. The surface of the annular limiting boss facing the rotating member 142 is used to cooperate with the rotating member 142, thereby limiting the stroke of the feed member 143.

[0062] Preferably, to improve the stability of the locking component 110, a spring pin is provided on one of the connecting part 111 and the neck 220, and a pin groove 222 is provided on the other. When the locking component 110 is in the locked position, the spring pin and the pin groove 222 cooperate. 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.

[0063] This application embodiment also provides a valve handle 200, which is equipped with a valve handle screw-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 screw-type locking device 100 as described in the above embodiments, the technical effects of the valve handle 200 and the valve are explained in the above embodiments.

[0064] 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.

[0065] 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.

[0066] 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.

[0067] 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 single-handle screw-type locking device, 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 components are used to secure the valve handle (200). A limiting component (140) is helically fed onto the mounting component. When the limiting component (140) helically feeds toward the valve handle (200) until the distance between the limiting component (140) and the valve handle (200) is less than the minimum preset distance that the locking component (110) can pass through, the locking component (110) is prevented from reciprocating between the locked position and the unlocked position. When the limiting component (140) helically feeds away from the valve handle (200) until the distance between the limiting component (140) and the valve handle (200) is greater than or equal to the minimum preset distance, the locking component (110) can reciprocate between the locked position and the unlocked position.

2. The valve single-handle screw-type locking device 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 single-handle screw-type locking device 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 single-handle screw-type locking device 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). The mounting component includes a base (120) and an assembly (130). The base (120) is detachably connected to the grip (210). The first end of the assembly (130) is connected to the base (120), and the second end of the assembly (130) extends above the neck (220). The limiting component (140) is disposed at the second end of the assembly (130).

5. The valve single-handle screw-type locking device according to claim 4, characterized in that, The base (120) includes a base plate (121) and a vertical plate (122). The base plate (121) is connected to the gripping part (210) by at least two threaded fasteners (150). One end of the vertical plate (122) is connected to the base plate (121), and the other end is erected away from the base plate (121). The assembly part (130) includes a first assembly plate (131) and a second assembly plate (132). The first end of the first assembly plate (131) is connected to the vertical plate (122). The second end of the first assembly plate (131) extends toward the neck (220). The second assembly plate (132) is connected to the second end of the first assembly plate (131), and the second assembly plate (132) serves as the second end of the assembly part (130) and satisfies the parallel condition with the neck (220).

6. The valve single-handle screw-type locking device according to claim 5, characterized in that, The limiting component (140) includes: A fastener (141) is fixed to the second assembly plate (132). The fastener (141) is provided with a guide groove (1411) that extends along the feed direction. Rotating component (142), which is rotatably sleeved on the fixed component (141), and the rotating component (142) is provided with a spiral groove (1421) extending spirally along the feed direction. The feed member (143) is slidably disposed within the fixing member (141) along the feed direction. The feed member (143) is provided with a drive guide rod (1431), which passes through the guide groove (1411) and slides in cooperation with the spiral groove (1421).

7. The valve single-handle screw-type locking device according to claim 6, characterized in that, The fixing member (141) provides limiting grooves (1412) communicating with the guide groove (1411) at both ends of the guide groove (1411). The limiting grooves (1412) extend away from the guide groove (1411) along a preset direction, and the preset direction is set at an angle to the feed direction.

8. The valve single-handle screw-type locking device according to claim 6, characterized in that, A limiting hole (221) is provided on the neck (220) facing the feed member (143), and the limiting hole (221) is used to cooperate with the feed member (143).

9. A valve handle with a single-handle design, characterized in that, The valve handle (200) is provided with a valve handle screw-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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