Low-torque guide stop valve
By setting up chutes and guide blocks on the guide rails, the large switching torque and operation difficulties caused by the accumulation of debris in the existing shut-off valves are solved, low-torque valve operation is achieved, and damage to the valve body connecting seat is prevented and Anti-rotating component too much rotation.
Patent Information
- Application Number
- CN202420927304.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-04-30
AI Technical Summary
During the opening or closing of the existing shut-off valve, the debris between the anti-rotation device and the valve body connecting seat cannot be removed in time, resulting in large valve switching torque and difficult operation, and may cause scratches and protection on the surface of the valve body connecting seat. Layer destruction.
A low torque guide shut-off valve is designed, and an anti-rotation component with an oblique chute is installed on the guide rail. When the guide rail and the anti-rotation component slide, the debris and chips of the anti-rotation treatment layer are transported into a specific groove through the oblique chute to avoid friction. , combined with the design of the guide block and guide plate, ensure the assembly slides smoothly and prevents clamping and burning.
It effectively avoids the problems of large valve switching torque and difficult operation, prevents scratches and protective layer damage of the valve body connecting seat, and avoids excessive rotation and damage of the anti-rotation component under the driving mechanism.
Smart Images
Figure CN222229453U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of stop valves, in particular to a low-torque guided stop valve. Background Art
[0002] In order to prevent the valve stem from rotating during the opening or closing process of the existing general stop valve, an anti-rotation device needs to be provided on the valve stem of the stop valve to slide with the guide rail of the valve body connecting seat fixedly installed on the valve body. The valve body connecting seat is generally made of castings, and its surface needs to be sprayed with protective paint, so the surface is relatively rough. However, during the sliding process of the anti-rotation device, fine particles generated by the friction between the guide rail and the valve body connecting seat and dust in the environment will accumulate on the surface of the guide rail, and the debris between the guide rail and the anti-rotation device will continue to accumulate and cannot be removed in time, further increasing the friction between the anti-rotation device and the valve body connecting seat, resulting in the problem of large valve switching torque and difficult operation; at the same time, the fine particles and dust and other debris generated during the friction will accumulate between the anti-rotation device and the valve body connecting seat, and the anti-rotation device will drive the debris to slide on the surface of the valve body connecting seat during the up and down sliding process, so as to cause scratches on the surface of the valve body connecting seat, thereby damaging the protective layer on the surface of the valve body connecting seat. Therefore, it is urgently necessary to design a low-torque guided stop valve to solve the above problems. Utility Model Content
[0003] The utility model aims to provide a low torque guide stop valve, which solves the problem that the debris between the existing anti-rotation device and the valve body connecting seat cannot be cleared in time, resulting in large valve switching torque and difficult operation.
[0004] In order to solve the above technical problems, the utility model provides a low-torque guided stop valve, including a valve body, a valve body connecting seat, a valve stem, a driving mechanism and an anti-rotation component, the valve body connecting seat is connected to the upper part of the valve body, one end of the valve stem is inserted into the valve body, and the other end is connected to the driving mechanism after passing through the valve body connecting seat, the inner wall of the valve body connecting seat is provided with a guide rail, the anti-rotation component is arranged on the valve stem and is slidably connected to the guide rail, the guide rail is provided with a first contact wall and a second contact wall for abutting against the anti-rotation component and preventing the anti-rotation component from rotating forward and reversely respectively, the first contact wall is provided with a plurality of first grooves, and the second contact wall is provided with a second groove.
[0005] Furthermore, both the first groove and the second groove are inclined grooves, and the inclination angle is 45°.
[0006] Furthermore, a third groove and a fourth groove are respectively formed on the first contact wall and the second contact wall of the guide rail.
[0007] On each of the first contact walls, a side of each of the first grooves facing the third groove is inclined downward and is communicated with the third groove.
[0008] On each of the second contact walls, a side of each of the second grooves facing the fourth groove is inclined downward and is communicated with the fourth groove.
[0009] Further, the third groove is arranged on a side of the first groove away from the anti-rotation component, and the fourth groove is arranged on a side of the second groove away from the anti-rotation component.
[0010] Furthermore, the guide rail includes two guide blocks respectively fixed on both sides of the valve body connecting seat, and the two sides of the anti-rotation component are respectively slidably matched with the two guide blocks, and the opposite sides of each guide block respectively have the first contact wall and the second contact wall, and the first groove and the second groove in each guide block are staggered up and down.
[0011] Further, the anti-rotation assembly includes a first guide plate and a second guide plate relatively arranged on both sides of the valve stem, a fifth groove is provided on the opposite surfaces of the first guide plate and the second guide plate, locking holes are provided at both ends of the first guide plate and the second guide plate, a fastener is installed in each of the locking holes, and a seventh groove for sliding with the guide block is provided at the intersection of the two ends of the first guide plate and the second guide plate, the two seventh grooves constitute a U-shaped groove, one side of the U-shaped groove has a third contact wall for abutting against the first contact wall, and the other side has a fourth contact wall for abutting against the second contact wall.
[0012] Furthermore, a sixth groove for limiting the positions of the first guide plate and the second guide plate is formed on the outer wall of the valve stem.
[0013] Furthermore, the width of each of the first grooves is smaller than or equal to the height of the third contact wall, and the width of each of the second grooves is smaller than or equal to the height of the fourth contact wall.
[0014] Further, the width of each of the first grooves is equal to one third of the height of the third contact wall, and the width of each of the second grooves is equal to one third of the height of the fourth contact wall.
[0015] Furthermore, the height between two adjacent first grooves is equal to two-thirds of the height of the third contact wall, and the height between two adjacent second grooves is equal to two-thirds of the height of the fourth contact wall.
[0016] Furthermore, the valve body connecting seat and the valve body are connected by threads and then fixed by spot welding.
[0017] Beneficial effects of the utility model: The design of the guide rail on the inner wall of the valve body connecting seat in the utility model can make the dust or the debris of the anti-corrosion treatment layer be obliquely transported from the first groove and the second groove on the first contact wall and the second contact wall to the third groove and the fourth groove when the guide rail and the anti-rotation component slide, and fall from the third groove and the fourth groove, which can effectively prevent the valve from being affected by the anti-corrosion coating and dust, resulting in the problem of large valve switching torque and difficult operation.
[0018] The design of the anti-rotation component can block the forward or reverse rotation of the anti-rotation component through the contact between the anti-rotation component and the first contact wall or the second contact wall of the guide rail, thereby indirectly limiting the rotation of the valve stem, effectively avoiding the problem of damage to the valve stem caused by excessive rotation force under the driving force of the driving mechanism;
[0019] The limitation of the width of the first groove and the second groove can effectively prevent the first guide plate and the second guide plate from falling into the first groove and the second groove when sliding and being unable to move up and down, and effectively avoid the problem of the anti-rotation component being stuck and unable to move when sliding, causing the drive mechanism to burn;
[0020] The limitation of the height between two adjacent first grooves or the height between two adjacent second grooves can make the height of the first guide plate and the second guide plate completely cover the width of the first groove and the area between the two adjacent first grooves or the width of the second groove and the area between the two adjacent second grooves, so that the first guide plate and the second guide plate can slide smoothly on the two guide blocks to ensure the smooth operation of the valve. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the technical solution of the present invention, 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 only 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.
[0022] Figure 1 This is a front sectional view of a low torque pilot stop valve in an embodiment of the utility model;
[0023] Figure 2 This is a diagram showing a disconnected side of a valve body connection seat of a low torque pilot stop valve in an embodiment of the utility model;
[0024] Figure 3 It is a schematic diagram of a low-torque pilot stop valve in an embodiment of the present utility model, in which one side of a valve body connection seat is slidably connected to an anti-rotation assembly;
[0025] Figure 4It is a schematic diagram of a low-torque pilot stop valve in an embodiment of the present utility model, in which the other side of the valve body connection seat is slidably connected to the anti-rotation assembly;
[0026] In the figure: 1-valve body, 2-valve body connecting seat, 3-valve stem, 6-anti-rotation assembly, 7-guide block, 31-sixth groove, 61-first guide plate, 62-second guide plate, 71-first groove, 72-second groove, 73-third groove, 74-fourth groove, 611-fifth groove, 612-lock hole, 613-seventh groove. DETAILED DESCRIPTION
[0027] The following will be combined with the drawings of the utility model specification to clearly and completely describe the technical solutions in the utility model embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0028] The following will be combined with a specific embodiment of the utility model and the attached Figure 1-4 To explain in detail, a low-torque guided stop valve is specifically disclosed, including a valve body 1, a valve body connecting seat 2, a valve stem 3, a driving mechanism and an anti-rotation component 6, the valve body connecting seat 2 is connected to the upper part of the valve body 1, and the valve body connecting seat 2 and the valve body 1 are connected by threads and fixed by spot welding.
[0029] One end of the valve stem 3 is inserted into the valve body 1 , and the other end passes through the valve body connecting seat 2 and is connected to the driving mechanism. A sixth groove 31 for limiting the positions of the first guide plate 61 and the second guide plate 62 is provided on the outer wall of the valve stem 3 .
[0030] Guide rails are provided on the inner walls of the valve body connecting seat 2, the anti-rotation component 6 is arranged on the valve stem 3 and is slidably connected to the guide rails, the guide rails are provided with a first contact wall and a second contact wall for abutting against the anti-rotation component 6 and preventing the anti-rotation component 6 from rotating forward and reversely, respectively, a plurality of first grooves 71 are provided on the first contact wall, and a second groove 72 is provided on the second contact wall, the first groove 71 and the second groove 72 are both inclined grooves, and the inclination angle is 45°.
[0031] The guide rail includes two guide blocks 7 respectively fixed on both sides of the valve body connection seat 2, the guide blocks 7 are arranged longitudinally, and the two sides of the anti-rotation component 6 are respectively slidably matched with the two guide blocks 7, and the opposite sides of each guide block 7 are respectively provided with a first contact wall and a second contact wall, and the first groove 71 and the second groove 72 in each guide block 7 are staggered up and down.
[0032] A third groove 73 and a fourth groove 74 are respectively provided longitudinally on the first contact wall and the second contact wall of the guide rail. On each first contact wall, a side of each first groove 71 facing the third groove 73 is inclined downward and communicated with the third groove 73.
[0033] On each second contact wall, each second groove 72 is inclined downward toward one side of the fourth groove 74 and is connected to the fourth groove 74, the third groove 73 is connected to and connected to the side of the first groove 71 away from the anti-rotation component 6, and the fourth groove 74 is connected to and connected to the side of the second groove 72 away from the anti-rotation component 6.
[0034] The design of the guide rail on the inner wall of the valve body connecting seat 2 can ensure that when the guide rail and the anti-rotation component 6 slide, the dust or chips of the anti-corrosion treatment layer can be obliquely transported from the first groove 71 and the second groove 72 on the first contact wall to the third groove 73 and the fourth groove 74, and fall from the third groove 73 and the fourth groove 74, which can effectively prevent the valve from being affected by the anti-corrosion coating and dust, resulting in problems such as large valve switching torque and difficult operation.
[0035] The anti-rotation assembly 6 includes a first guide plate 61 and a second guide plate 62 which are relatively arranged on both sides of the valve stem 3. A fifth groove 611 is provided on the opposite surfaces of the first guide plate 61 and the second guide plate 62. Lock holes 612 are provided at both ends of the first guide plate 61 and the second guide plate 62. A fastener is installed in each lock hole 612. The fastener is preferably a bolt and a nut, or it can be a combination of a threaded pin and a limit block, but it is not limited to these two fixing methods. A seventh groove 613 for sliding with the guide block 7 is respectively provided at the intersection of the two ends of the first guide plate 61 and the second guide plate 62. The two seventh grooves 613 form a U-shaped groove. One side of the U-shaped groove has a third contact wall for abutting against the first contact wall, and the other side has a fourth contact wall for abutting against the second contact wall.
[0036] The design of the anti-rotation component 6 can block the forward or reverse rotation of the anti-rotation component 6 through the contact between the anti-rotation component 6 and the first contact wall or the second contact wall of the guide rail, thereby indirectly limiting the rotation of the valve stem 3, and effectively avoiding the problem of damage to the valve stem 3 due to excessive rotational force under the driving force of the driving mechanism.
[0037] The width of each first groove 71 is less than or equal to the height of the third contact wall, and the width of each second groove 72 is less than or equal to the height of the fourth contact wall. Preferably, the width of each first groove 71 is equal to one third of the height of the third contact wall, and the width of each second groove 72 is equal to one third of the height of the fourth contact wall. The limitation of the widths of the first grooves 71 and the second grooves 72 can effectively prevent the first guide plate 61 and the second guide plate 62 from falling into the first grooves 71 and the second grooves 72 when sliding and being unable to move up and down, thereby effectively avoiding the problem of the anti-rotation component 6 being stuck and unable to move when sliding, causing the driving mechanism to burn out.
[0038] The height between two adjacent first grooves 71 is equal to two-thirds of the height of the third contact wall, and the height between two adjacent second grooves 72 is equal to two-thirds of the height of the fourth contact wall, so that the height of the first guide plate 61 and the second guide plate 62 can completely cover the width of the first groove 71 and the area between the two adjacent first grooves 71 or the width of the second groove 72 and the area between the two adjacent second grooves 72, so that the first guide plate 61 and the second guide plate 62 can slide smoothly on the two guide blocks 7 to ensure the smooth operation of the valve.
[0039] The workflow of this utility model:
[0040] Installation method of anti-rotation component 6 and guide rail:
[0041] The first guide plate 61 and the second guide plate 62 are installed relatively to each other at the sixth groove 31 of the valve stem 3, and the third contact wall at one end of the first guide plate 61 is abutted against the first contact wall of one of the guide blocks 7 on the inner wall of the valve body connecting seat 2, and the fourth contact wall at the other end is abutted against the second contact wall of another guide block 7 on the inner wall of the valve body connecting seat 2, and then the fourth contact wall at one end of the second guide plate 62 is abutted against the second contact wall of one of the guide blocks 7 on the inner wall of the valve body connecting seat 2, and the third contact wall at the other end is abutted against the first contact wall of another guide block 7 on the inner wall of the valve body connecting seat 2. After the abutment is completed, the first guide plate 61 and the second guide plate 62 are fixed by fasteners.
[0042] The sliding process of the anti-rotation component 6 and the guide rail:
[0043] The driving mechanism drives the valve stem 3 to rotate. Under the limited rotation of the anti-rotation component 6, the valve stem 3 moves up and down along the two guide blocks 7 of the guide rail. During the movement, the first guide plate 61 and the second guide plate 62 slide up and down along the setting direction of the guide block 7. When sliding, due to long-term friction between the guide block 7 and the first guide plate 61 and the second guide plate 62 of the anti-rotation component 6, the anti-corrosion treatment layer and dust slide along the first groove 71 and the second groove 72 on both sides of the guide block 7 to the third groove 73 and the fourth groove 74, and fall from the third groove 73 and the fourth groove 74, which can effectively prevent the valve from being affected by the anti-corrosion coating and dust, resulting in problems such as large valve switching torque and difficult operation.
[0044] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.
Claims
1. A low torque guided stop valve, characterized in that: The invention comprises a valve body (1), a valve body connecting seat (2), a valve stem (3), a driving mechanism and an anti-rotation component (6), wherein the valve body connecting seat (2) is connected to the upper part of the valve body (1), one end of the valve stem (3) is inserted into the valve body (1), and the other end is connected to the driving mechanism after passing through the valve body connecting seat (2), a guide rail is provided on the inner wall of the valve body connecting seat (2), the anti-rotation component (6) is arranged on the valve stem (3) and is slidably connected to the guide rail, and a first contact wall and a second contact wall are provided on the guide rail for abutting against the anti-rotation component (6) and preventing the anti-rotation component (6) from rotating forward and reverse respectively, the first contact wall is provided with a plurality of first grooves (71), and the second contact wall is provided with a second groove (72).
2. A low torque pilot stop valve according to claim 1, characterized in that: The first groove (71) and the second groove (72) are both inclined grooves, and the inclination angle is 45°.
3. A low torque pilot stop valve according to claim 2, characterized in that: The first contact wall and the second contact wall of the guide rail are respectively provided with a third groove (73) and a fourth groove (74). On each of the first contact walls, each of the first grooves (71) is inclined downward toward one side of the third groove (73) and is communicated with the third groove (73). On each of the second contact walls, each of the second grooves (72) is inclined downward toward one side of the fourth groove (74) and is communicated with the fourth groove (74).
4. A low torque pilot stop valve according to claim 3, characterized in that: The third groove (73) is arranged on a side of the first groove (71) away from the anti-rotation component (6), and the fourth groove (74) is arranged on a side of the second groove (72) away from the anti-rotation component (6).
5. A low torque pilot stop valve according to claim 1, characterized in that: The guide rail comprises two guide blocks (7) respectively fixed on both sides of the valve body connecting seat (2); the two sides of the anti-rotation component (6) are respectively slidably matched with the two guide blocks (7); the opposite sides of each guide block (7) respectively have the first contact wall and the second contact wall; the first groove (71) and the second groove (72) in each guide block (7) are staggered up and down.
6. A low torque pilot stop valve according to claim 5, characterized in that: The anti-rotation assembly (6) comprises a first guide plate (61) and a second guide plate (62) which are arranged on both sides of the valve stem (3) relative to each other, a fifth groove (611) is provided on the opposite surfaces of the first guide plate (61) and the second guide plate (62), locking holes (612) are provided at both ends of the first guide plate (61) and the second guide plate (62), a fastener is installed in each locking hole (612), and a seventh groove (613) for slidingly cooperating with the guide block (7) is provided at the intersection of the two ends of the first guide plate (61) and the second guide plate (62), the two seventh grooves (613) constitute a U-shaped groove, one side of the U-shaped groove has a third contact wall for abutting against the first contact wall, and the other side has a fourth contact wall for abutting against the second contact wall.
7. A low torque pilot stop valve according to claim 6, characterized in that: A sixth groove (31) for limiting the positions of the first guide plate (61) and the second guide plate (62) is provided on the outer wall of the valve stem (3).
8. A low torque pilot stop valve according to claim 6, characterized in that: The width of each of the first grooves (71) is less than or equal to the height of the third contact wall, and the width of each of the second grooves (72) is less than or equal to the height of the fourth contact wall.
9. A low torque pilot stop valve according to claim 6, characterized in that: The width of each of the first grooves (71) is equal to one third of the height of the third contact wall, the width of each of the second grooves (72) is equal to one third of the height of the fourth contact wall, the height between two adjacent first grooves (71) is equal to two thirds of the height of the third contact wall, and the height between two adjacent second grooves (72) is equal to two thirds of the height of the fourth contact wall.
10. The low torque pilot stop valve according to claim 1, characterized in that: The valve body connecting seat (2) and the valve body (1) are connected via threads and then fixed via spot welding.