Double-telescopic deviation-free fan-shaped blind plate valve

Abstract

The utility model relates to a double-telescopic deviation-free fan-shaped blind plate valve, which belongs to the technical field of valves, and comprises a valve body A, a valve body B and a valve plate, the valve plate is arranged between the valve body A and the valve body B, and the valve body A and the valve body B have the same structure; lead screws are arranged at the positions, close to three corners, of the valve body A and the valve body B in a penetrating manner; the valve plate is in a fan shape, the upper portion of the valve plate is rotationally connected with the lead screw at the uppermost corner, and an H-shaped guide wheel is arranged below the valve plate and used for supporting and limiting the bottom of the valve plate. According to the double-telescopic deviation-free fan-shaped blind plate valve, the lower portion of the valve plate is limited through the H-shaped guide wheel, the upper portion of the valve plate is limited through the shaft check ring, and deviation during movement of the valve plate is prevented; when the valve is opened, the floating bodies on the valve body A and the valve body B can be adjusted to move outwards through the lead screw to be separated from the valve plate, the opening distance of the valve is large, the sealing rubber strip is prevented from being abraded when the valve plate is opened and closed, and the valve is good in sealing effect and long in service life.

Description

Technical Field

[0001] The utility model relates to a double-telescopic non-offset fan-shaped blind plate valve, belonging to the technical field of valves. Background Art

[0002] Blind plate valve is a gate valve used to cut off gas medium. It can be operated manually, electrically, pneumatically or hydraulically. Blind plate valves are widely used in gas pipeline systems or toxic and harmful gas occasions to isolate, cut off or connect gas or harmful gas pipelines. Blind plate valves are selected for their simple structure and convenient operation. However, the valve body of the existing blind plate valve is a single telescopic type, the valve opening distance is small, and it is only connected by rotating above the valve plate. The valve plate is not well positioned. When the valve plate moves, it is easy to deviate. Frequent opening and closing will cause the sealing strip on the valve plate to wear, affecting the sealing effect and service life of the valve. Utility Model Content

[0003] In view of the above deficiencies in the prior art, the technical problem to be solved by the utility model is: to provide a double telescopic non-offset fan-shaped blind plate valve, when the valve is opened and closed, the valve plate will not be offset, and the sealing strip will not wear, the valve has a good sealing effect and a long service life.

[0004] The double-telescopic non-offset fan-shaped blind plate valve described in the utility model comprises a valve body A, a valve body B and a valve plate. The valve plate is arranged between the valve body A and the valve body B, and the valve body A and the valve body B have the same structure. A lead screw is arranged through the valve body A and the valve body B near the three corners, and the lead screw can drive the valve body A and the valve body B to telescope. The valve plate is fan-shaped, and the upper part of the valve plate is rotatably connected to the lead screw at the uppermost corner. An H-type guide wheel is arranged under the valve plate. The H-type guide wheel is used to support and limit the bottom of the valve plate to ensure the middle positioning of the valve plate to prevent it from offsetting during movement.

[0005] The technical solution of the utility model is to provide a double-telescopic non-offset fan-shaped blind plate valve, which can adjust the telescopic movement of valve body A and valve body B through a screw to separate them from the valve plate to avoid wear of the sealing strip when the valve plate is opened and closed; the bottom of the valve plate is limited by an H-shaped guide wheel to prevent it from offsetting during movement.

[0006] Preferably, the top of the valve body A is fixedly connected to the valve body B by a cross beam, and the bottom sides of the valve body A and the valve body B are fixedly connected by a base; the valve body A includes a fixed body A and a floating body A, and the valve body B includes a fixed body B and a floating body B, and the fixed body A and the floating body A, as well as the fixed body B and the floating body B are connected by flexible materials.

[0007] Preferably, the screw includes a screw A and a screw B, wherein the screw A is arranged above the valve body A and the valve body B, and the screw B is arranged on both sides below the valve body A and the valve body B; the screw A and the screw B are rotatably connected to the fixed body A and the fixed body B through the bearing seat, and the screw A and the screw B are rotatably connected to the floating body A and the floating body B through the nut seat.

[0008] Preferably, a shaft retaining ring is installed on the lead screw A, and the shaft retaining ring is located on both sides of the valve plate, and the shaft retaining ring is used to limit the upper part of the valve plate.

[0009] Preferably, a rocker arm A is installed at one end of the screw A, and a rocker arm B is installed at one end of the screw B. The two ends of the rocker arm A are rotatably connected to the rocker arms B on both sides through a connecting rod; when the screw A rotates, the rocker arm and the connecting rod drive the screw B below to rotate synchronously, so as to drive the floating bodies on both sides of the valve plate to move stably, thereby realizing the extension and retraction of the valve body.

[0010] Furthermore, an opening mechanism is provided between the crossbeam and the valve body, and the opening mechanism can drive the valve plate to rotate around the axis of the screw A. An opening shaft is provided through the opening mechanism; when the opening shaft rotates, the opening mechanism can be driven to rotate at the same time, thereby driving the valve plate to open or close.

[0011] Furthermore, a sealing strip is installed on the valve plate, and a sealing flange is provided on the contact side of the floating body A, the floating body B and the valve plate. When the floating body A and the floating body B clamp the valve plate, the sealing strip and the sealing flange are used for sealing to prevent leakage.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The double-telescopic non-offset fan-shaped blind plate valve described in the utility model limits the bottom of the valve plate by an H-shaped guide wheel and limits the top of the valve plate by a shaft retaining ring to prevent the valve plate from offsetting during movement. When the valve is opened, the floating bodies on the valve body A and the valve body B can be adjusted to move outwards through a lead screw to separate them from the valve plate. The valve opening distance is large, which avoids the wear of the sealing strip when the valve plate is opened and closed. The valve has a good sealing effect and a long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is the front view of the utility model;

[0015] Figure 2 It is a partial cross-sectional view of the left side view of the utility model;

[0016] Figure 3 It is the main view of valve body A;

[0017] Figure 4 It is the left side view of valve body A and valve body B.

[0018] In the figure: 1. valve plate; 2. sealing strip; 3. rocker arm A; 4. connecting rod; 5. rocker arm B; 6. H-type guide wheel; 7. base; 8. valve body A; 9. nut seat; 10. screw A; 11. bearing seat; 12. plate opening shaft; 13. plate opening mechanism; 14. crossbeam; 15. shaft retaining ring; 16. valve body B; 17. screw B; 18. fixed body A; 19. floating body A; 20. fixed body B; 21. floating body B; 22. sealing flange. DETAILED DESCRIPTION

[0019] The utility model is further described below in conjunction with specific embodiments.

[0020] However, the description of the present invention is merely an embodiment of structural and even functional description, and the scope of rights of the present invention is not limited by the embodiments described in the text.

[0021] For example, multiple embodiments may have multiple changes and multiple forms, and it should be understood that the scope of rights of the present utility model includes equivalents that can realize the technical idea.

[0022] like Figures 1 to 4 As shown, this embodiment is implemented by the following technical solutions: it includes a valve body A8, a valve body B16 and a valve plate 1, the valve plate 1 is arranged between the valve body A8 and the valve body B16, and the valve body A8 and the valve body B16 have the same structure; a lead screw is arranged through the valve body A8 and the valve body B16 near the three corners, and the lead screw can drive the valve body A8 and the valve body B16 to extend and retract; the valve plate 1 is fan-shaped, and the upper part of the valve plate 1 is rotatably connected to the lead screw A10, and the lower part of the valve plate 1 is provided with an H-type guide wheel 6, and the H-type guide wheel 6 is used to support and limit the bottom of the valve plate 1 to ensure that the valve plate is positioned in the middle to prevent it from shifting during movement.

[0023] In this embodiment, the valve body A8 is fixedly connected to the top of the valve body B16 via a crossbeam 14, and the valve body A8 is fixedly connected to the bottom sides of the valve body B16 via a base 7; the valve body A8 includes a fixed body A18 and a floating body A19, and the valve body B16 includes a fixed body B20 and a floating body B21, and the fixed body A18 and the floating body A19, and the fixed body B20 and the floating body B21 are all connected by flexible materials.

[0024] The screw includes a screw A10 and a screw B17. The screw A10 is arranged above the valve body A8 and the valve body B16, and the screw B17 is arranged on both sides below the valve body A8 and the valve body B16. The screw A10 and the screw B17 are rotatably connected to the fixed body A18 and the fixed body B20 through the bearing seat 11, and the screw A10 and the screw B17 are rotatably connected to the floating body A19 and the floating body B21 through the nut seat 9.

[0025] The screw A10 is provided with a shaft retaining ring 15, which is located on both sides of the valve plate 1. The shaft retaining ring 15 is used to limit the upper side of the valve plate 1. A swing rod A3 is provided at one end of the screw A10, and a swing rod B5 is provided at one end of the screw B17. The two ends of the swing rod A3 are rotatably connected with the swing rods B5 on both sides through the connecting rod 4. When the screw A10 rotates, the screw B17 below is driven to rotate synchronously through the swing rod and the connecting rod, so as to drive the floating bodies on both sides of the valve plate to move stably and realize the expansion and contraction of the valve body. An opening mechanism 13 is provided between the crossbeam 14 and the valve body. The opening mechanism 13 can drive the valve plate 1 to rotate around the axis of the screw A10. An opening shaft 12 is provided through the opening mechanism 13. When the opening shaft 12 rotates, it can drive the opening mechanism 13 to rotate simultaneously, thereby driving the valve plate to open or close. A sealing strip 2 is installed on the valve plate 1, and a sealing flange 22 is provided on the contact side of the floating body A19, the floating body B21 and the valve plate. When the floating body A19 and the floating body B21 clamp the valve plate, the sealing strip 2 and the sealing flange 22 are used for sealing to prevent leakage.

[0026] The working process of the utility model is as follows: when the valve needs to be opened, the screw A10 drives the screw B17 to rotate, thereby driving the floating bodies A19 and B21 on both sides of the valve plate 1 away from the valve plate 1 at the same time, and then the plate opening shaft 12 drives the plate opening mechanism 13 to rotate around the screw A10, and the valve opens.

[0027] Of course, the above contents are only preferred embodiments of the present invention and cannot be considered to limit the scope of the embodiments of the present invention. The present invention is not limited to the above examples, and any equivalent changes and improvements made by ordinary technicians in the technical field within the essential scope of the present invention shall fall within the scope of the patent coverage of the present invention.

Claims

1. A double telescopic non-offset sector-shaped blind plate valve, characterized in that: The invention comprises a valve body A (8), a valve body B (16) and a valve plate (1), wherein the valve plate (1) is arranged between the valve body A (8) and the valve body B (16), and the valve body A (8) and the valve body B (16) have the same structure; screws are provided through the valve body A (8) and the valve body B (16) at positions near three corners thereof, and can drive the valve body A and the valve body B to extend and retract; the valve plate (1) is fan-shaped, and the upper part of the valve plate (1) is rotatably connected to the screw at the uppermost corner; and an H-shaped guide wheel (6) is provided below the valve plate (1) for supporting and limiting the bottom of the valve plate.

2. The double telescopic non-offset sector-shaped blind plate valve according to claim 1 is characterized in that: The top of the valve body A (8) and the valve body B (16) are fixedly connected by a crossbeam (14), and the bottoms of the valve body A (8) and the valve body B (16) are fixedly connected by a base (7); the valve body A (8) includes a fixed body A (18) and a floating body A (19), and the valve body B (16) includes a fixed body B (20) and a floating body B (21), and the fixed body A (18) and the floating body A (19), and the fixed body B (20) and the floating body B (21) are all connected by flexible materials.

3. The double telescopic non-offset sector-shaped blind plate valve according to claim 2, characterized in that: The screw comprises a screw A (10) and a screw B (17). The screw A (10) is arranged above the valve body A (8) and the valve body B (16), and the screw B (17) is arranged below the valve body A (8) and the valve body B (16) on both sides. The screw A (10) and the screw B (17) are both rotatably connected to the fixed body A (18) and the fixed body B (20) through the bearing seat (11), and the screw A (10) and the screw B (17) are both rotatably connected to the floating body A (19) and the floating body B (21) through the nut seat (9).

4. The double telescopic non-offset sector-shaped blind plate valve according to claim 3 is characterized in that: The lead screw A (10) is provided with a shaft retaining ring (15), and the shaft retaining ring (15) is located on both sides of the valve plate (1).

5. The double telescopic non-offset sector-shaped blind plate valve according to claim 4, characterized in that: A swing rod A (3) is installed at one end of the lead screw A (10), a swing rod B (5) is installed at one end of the lead screw B (17), and both ends of the swing rod A (3) are rotatably connected to the swing rods B (5) on both sides through connecting rods (4).

6. The double telescopic non-offset sector-shaped blind plate valve according to claim 2, characterized in that: A plate opening mechanism (13) is provided between the cross beam (14) and the valve body, and a plate opening shaft (12) is provided through the plate opening mechanism (13).

7. The double telescopic non-offset sector-shaped blind plate valve according to claim 3, characterized in that: A sealing strip (2) is installed on the valve plate (1), and a sealing flange (22) is provided on the contact side between the floating body A (19), the floating body B (21) and the valve plate.

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