Stop valve

Abstract

The utility model discloses a stop valve, which relates to the field of valve bodies and comprises a valve body, a valve rod is mounted on the valve body, the outer wall of the valve rod is rotatably connected with a guide plate, the top of a guide sleeve is fixedly connected with the guide plate, the bottom of a guide rod is fixedly connected with the valve body, and the outer wall of the guide rod is slidably sleeved with the guide sleeve. The locking assembly is arranged on the front face of the guide plate and used for locking the valve rod, a connecting hole matched with the locking plate is formed in the front face of the guide plate, and one end of the outer wall of the locking plate is slidably connected with an inner cavity of the locking groove in a clamped mode. The valve body, the valve rod and the guide assembly are used in a matched mode, the use stability of the valve rod can be improved through the guide plate, the guide sleeve and the guide rod, the valve rod can be in a stable static state under the action of the locking assembly, and the valve rod can be stably locked under the action of the limiting assembly. The locking plate can be in a stable state to be separated from the valve rod, and therefore the valve rod can be directly rotated.

Description

Technical Field

[0001] This utility model relates to the field of valve bodies, and in particular to a shut-off valve. Background Technology

[0002] Gate valves are widely used in industrial fluid control. Their main functions include shut-off, regulation, and throttling. The working principle of a gate valve is to control the opening and closing of the valve by moving the valve stem up and down. The sealing surface between the valve disc and the valve seat can be a plane or a cone. The valve disc moves linearly along the centerline of the fluid.

[0003] When the gate valve is in operation, it is usually driven manually by a handle. That is, when turning the valve stem to drive the valve disc to move up and down, the handle at the top of the valve stem needs to be used to turn the valve stem.

[0004] Since the valve disc is driven to move up and down by the valve stem, the valve stem has a certain length. When the valve stem is rotated by the handle, it will be subjected to a thrust, which will cause the valve stem to bend under the force, thus affecting the service life of the valve stem. Utility Model Content

[0005] The purpose of this invention is to provide a shut-off valve to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a shut-off valve, comprising a valve body, wherein a valve stem is mounted on the valve body;

[0007] The top of the valve body is provided with a guide assembly that acts on the valve stem, the guide assembly comprising:

[0008] Guide plate, the outer wall of the valve stem is rotatably connected to the guide plate;

[0009] A guide sleeve, the top of which is fixedly connected to a guide plate;

[0010] A guide rod, the bottom of which is fixedly connected to the valve body, and the outer wall of which is slidably sleeved with a guide sleeve;

[0011] A locking assembly is disposed on the front side of the guide plate and is used to lock the valve stem.

[0012] Preferably, the locking component includes:

[0013] The locking plate has a connecting hole on its front side that matches the locking plate.

[0014] A locking groove is formed on the outside of the valve stem, and one end of the outer wall of the locking plate is slidably engaged with the inner cavity of the locking groove;

[0015] A limiting component is disposed on a locking plate.

[0016] Preferably, the locking component further includes:

[0017] A connecting plate is fixedly connected to one end of a locking plate, and a handle is fixedly connected to the front of the connecting plate;

[0018] A limiting spring is provided on the side of the connecting plate away from the guide plate.

[0019] Preferably, a fixing rod is symmetrically fixedly connected to the front of the guide plate, one end of the fixing rod passes through the connecting plate and is fixedly connected to a limit block, and the outer wall of the fixing rod is slidably sleeved with a limit spring.

[0020] Preferably, the limiting component includes:

[0021] The limiting plate, wherein the bottom of the locking plate is provided with a mounting groove that matches the limiting plate;

[0022] A connecting block, which is fixedly connected to the side of the limiting plate;

[0023] A positioning spring is disposed on the top of the connecting block.

[0024] Preferably, a sliding groove is provided on the side of the inner wall of the mounting groove, and a connecting rod is fixedly connected to the bottom of the inner wall of the sliding groove. One end of the connecting rod passes through the connecting block and is fixedly connected to the fixing block. The outer wall of the connecting rod is slidably sleeved with the positioning spring.

[0025] The technical effects and advantages of this utility model are as follows:

[0026] This utility model utilizes the combined use of a valve body, valve stem, and guide assembly. The guide assembly includes a guide plate, a guide sleeve, a guide rod, and a locking assembly. The guide plate, guide sleeve, and guide rod can improve the stability of the valve stem during use. Under the action of the locking assembly, the valve stem can be kept in a stable stationary state. Under the action of the limiting assembly, the locking plate can be kept in a stable state and separated from the valve stem, so that the valve stem can be rotated directly. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0028] Figure 2 This is a schematic diagram of the overall structure of the guide plate of this utility model.

[0029] Figure 3 This is a schematic diagram of the internal structure of the guide plate of this utility model.

[0030] Figure 4This is a schematic diagram of the internal structure of the side of the locking plate of this utility model.

[0031] In the diagram: 1. Valve body; 2. Valve stem; 3. Guide assembly; 31. Guide plate; 32. Guide sleeve; 33. Guide rod; 34. Locking assembly; 341. Locking plate; 342. Locking groove; 343. Limiting assembly; 3431. Limiting plate; 3432. Connecting block; 3433. Slide groove; 3435. Positioning spring; 3436. Connecting rod; 3437. Fixing block; 344. Connecting plate; 345. Fixing rod; 346. Limiting spring; 347. Limiting block. Detailed Implementation

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only 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 making creative efforts are within the scope of protection of the present invention.

[0033] This utility model provides, for example Figure 1-4 The diagram shows a shut-off valve, including a valve body 1 with a valve stem 2 mounted on it. Rotating the valve stem 2 drives the valve disc inside the valve body 1 to move up and down, thus putting the valve body 1 into a closed or open state. A guide assembly 3 is provided on the top of the valve body 1, acting on the valve stem 2. The guide assembly 3 includes a guide plate 31, a guide sleeve 32, a guide rod 33, and a locking assembly 34. The outer wall of the valve stem 2 is rotatably connected to the guide plate 31, the top of the guide sleeve 32 is fixedly connected to the guide plate 31, the bottom of the guide rod 33 is fixedly connected to the valve body 1, and the outer wall of the guide rod 33 is slidably sleeved with the guide sleeve 32. Under the action of the guide rod 33 and the guide sleeve 32, the guide plate 31 can maintain stable up and down movement. When the valve stem 2 rotates and moves up and down, it can drive the guide plate 31 to move up and down, thereby causing the guide sleeve 32 to slide relative to the guide rod 33, thus guiding the valve stem 2 and ensuring the stability of the valve stem 2. When the valve stem 2 drives the valve disc inside the valve body 1 to be in the closed and open states, the guide sleeve 32 can slide outside the guide rod 33. The locking component 34 is set on the front of the guide plate 31. The locking component 34 is used to lock the valve stem 2, thereby ensuring the stability of the valve stem 2 when it is stationary.

[0034] Furthermore, the locking assembly 34 includes a locking plate 341, a locking groove 342, and a limiting assembly 343. The front of the guide plate 31 has a connecting hole that matches the locking plate 341. The locking groove 342 is located on the outside of the valve stem 2. One end of the outer wall of the locking plate 341 is slidably engaged with the inner cavity of the locking groove 342. When the locking plate 341 is engaged with the locking groove 342 on the valve stem 2, the valve stem 2 can be locked, preventing the valve stem 2 from rotating due to external force, thereby improving the stability of the valve disc position inside the valve body 1. The limiting assembly 343 is set on the locking plate 341. The limiting assembly 343 can keep the locking plate 341 and the valve stem 2 in a stable separated state, so as to drive the valve stem 2 to rotate when adjusting the valve disc.

[0035] Furthermore, the locking assembly 34 also includes a connecting plate 344 and a limiting spring 346. The connecting plate 344 is fixedly connected to one end of the locking plate 341. A handle is fixedly connected to the front of the connecting plate 344. The handle can be used to drive the connecting plate 344 away from the guide plate 31, thereby causing the connecting plate 344 to drive the locking plate 341 to separate from the valve stem 2 and release the locking state of the valve stem 2. The limiting spring 346 is located on the side of the connecting plate 344 away from the guide plate 31. A fixing rod 345 is symmetrically fixedly connected to the front of the guide plate 31. One end of the fixing rod 345 passes through the connecting plate 344 and is fixedly connected to a limiting block 347. The outer wall of the fixing rod 345 is slidably sleeved with the limiting spring 346, and the limiting spring 346 is located between the limiting block 347 and the connecting plate 344. The limiting spring 346 can give the connecting plate 344 an elastic compressive force, thereby keeping the locking plate 341 and the valve stem 2 in a stable latching state.

[0036] Specifically, the limiting assembly 343 includes a limiting plate 3431, a connecting block 3432, and a positioning spring 3435. The bottom of the locking plate 341 has a mounting groove that matches the limiting plate 3431. The connecting block 3432 is fixedly connected to the side of the limiting plate 3431. The positioning spring 3435 is located on the top of the connecting block 3432 and can provide a sliding force to the limiting plate 3431 through the connecting block 3432. A sliding groove 3433 is formed on the side of the inner wall of the mounting groove. The outer wall of the connecting block 3432 is slidably connected to the inner cavity of the sliding groove 3433. A connecting rod 3436 is fixedly connected to the bottom of the inner wall of the sliding groove 3433. One end of the connecting rod 3436 passes through the connecting block 3432 and is fixedly connected to a fixing block 3437. The outer wall of the connecting rod 3436 is connected to the positioning spring 3435. 5. Sliding sleeve, positioning spring 3435 is not between fixed block 3437 and connecting block 3432. When connecting plate 344 drives locking plate 341 to separate from valve stem 2, and limit plate 3431 is located outside guide plate 31, positioning spring 3435 can give limit plate 3431 a spring force through connecting block 3432, so that limit plate 3431 pops out of the mounting groove, so that limit plate 3431 is locked at the bottom of the front of guide plate 31, so that locking plate 341 cannot move towards valve stem 2, thereby ensuring the stability of locking plate 341 separating from valve stem 2. After valve stem 2 is rotated and adjusted, push limit plate 3431 upward so that limit plate 3431 is hidden inside the mounting groove, so that locking plate 341 can move towards valve stem 2, so that locking plate 341 locks valve stem 2.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A shut-off valve, comprising a valve body (1) on which a valve stem (2) is mounted; Its features are, The top of the valve body (1) is provided with a guide assembly (3) that acts on the valve stem (2), the guide assembly (3) comprising: Guide plate (31), the outer wall of the valve stem (2) is rotatably connected to the guide plate (31); Guide sleeve (32), the top of which is fixedly connected to guide plate (31); Guide rod (33), the bottom of the guide rod (33) is fixedly connected to the valve body (1), and the outer wall of the guide rod (33) is slidably sleeved with the guide sleeve (32); A locking assembly (34) is disposed on the front side of the guide plate (31) and is used to lock the valve stem (2).

2. A shut-off valve according to claim 1, characterized in that, The locking component (34) includes: Locking plate (341), the front side of the guide plate (31) is provided with a connection hole that matches the locking plate (341); Locking groove (342), the locking groove (342) is opened on the outside of the valve stem (2), and one end of the outer wall of the locking plate (341) is slidably engaged with the inner cavity of the locking groove (342); A limiting component (343) is disposed on a locking plate (341).

3. A shut-off valve according to claim 2, characterized in that, The locking component (34) further includes: A connecting plate (344) is fixedly connected to one end of a locking plate (341), and a handle is fixedly connected to the front side of the connecting plate (344). A limiting spring (346) is provided on the side of the connecting plate (344) away from the guide plate (31).

4. A shut-off valve according to claim 3, characterized in that, The guide plate (31) is symmetrically fixedly connected to a fixing rod (345). One end of the fixing rod (345) passes through the connecting plate (344) and is fixedly connected to a limit block (347). The outer wall of the fixing rod (345) is slidably sleeved with a limit spring (346).

5. A shut-off valve according to claim 2, characterized in that, The limiting component (343) includes: The bottom of the locking plate (341) is provided with a mounting groove that matches the limiting plate (3431); A connecting block (3432) is fixedly connected to the side of the limiting plate (3431); A positioning spring (3435) is disposed on the top of the connecting block (3432).

6. A shut-off valve according to claim 5, characterized in that, The inner wall of the mounting groove is provided with a sliding groove (3433) on the side. A connecting rod (3436) is fixedly connected to the bottom of the inner wall of the sliding groove (3433). One end of the connecting rod (3436) passes through the connecting block (3432) and is fixedly connected to the fixing block (3437). The outer wall of the connecting rod (3436) is slidably sleeved with the positioning spring (3435).

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