Venturi valve with leak-proof structure

Abstract

The utility model relates to the technical field of venturi valves, in particular to a venturi valve with an anti-leakage structure, which comprises three groups of supporting seats, a venturi valve body is fixedly connected to the middle of the three groups of supporting seats, and a supporting frame is fixedly connected to one side of the top of the venturi valve body. An electric air cylinder is used for driving a movable frame and a fixed block to move, two positioning columns are pushed to rotate when the fixed block moves, a first driving block and a second driving block are driven to rotate when the two positioning columns rotate, and the first driving block sequentially drives a first supporting rod and a first fan blade to rotate anticlockwise; when a second driving block drives a second supporting rod and a second fan blade to rotate clockwise, and a first fan blade and the second fan blade rotate and form a circular sealing surface, the circular sealing surface abuts against the interior of a sealing groove, so that the interior of the venturi valve is protected, and the service life of the venturi valve is prolonged. And leakage of the Venturi valve caused by the fact that the sealing surface of the movable valve plate cannot completely cover the valve clack is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of venturi valves, in particular to a venturi valve with an anti-leakage structure. Background Art

[0002] Venturi valve is a control valve commonly used in pipeline systems. Most of them use a rotating structure to control the internal flow. The valve is mainly composed of a shell, a cone, a cover and other parts. It is usually used to regulate high-flow gases or liquids. Venturi valves are widely used in chemical, petroleum, electric power and other industries.

[0003] During the use of the Venturi valve, the movable valve plate is driven so that the hole of the movable valve plate matches the hole of the valve disc. When the hole of the movable valve plate is aligned with the hole of the valve disc, the Venturi valve is closed, allowing a certain amount of fluid to pass through. When the hole of the movable valve plate is completely misaligned with the hole of the valve disc, the fluid is prevented from passing through and the Venturi valve is closed. When adjusting the position of the holes of the movable valve plate and the valve disc, it is necessary to constantly adjust the angle of the hole of the movable valve plate to completely close it. There are certain requirements for the adjustment accuracy of the Venturi valve. If the holes of the movable valve plate and the valve disc are slightly misaligned, the movable valve plate will fail to completely cover the valve disc orifice when the Venturi valve is closed, thereby causing the Venturi valve to leak, reducing its sealing performance and failing to achieve a good sealing effect. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a Venturi valve with an anti-leakage structure.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A venturi valve with an anti-leakage structure comprises three groups of support seats, the middle parts of the three groups of support seats are fixedly connected with a venturi valve body, one side of the top of the venturi valve body is fixedly connected with a support frame, one side of the support frame is provided with an electric cylinder, the output end of the electric cylinder is connected with a moving frame, and both sides of the inner wall of the moving frame are fixedly connected with fixed blocks;

[0007] A first support rod is provided inside the venturi valve body, a second support rod is sleeved on the middle part of the first support rod, the top of the first support rod extends to the outside of the support seat and is fixedly connected to a first driving block, the top of the second support rod extends to the outside of the support seat and is fixedly connected to a second driving block, and the first driving block and the second driving block are fixedly connected to a positioning column on one side close to the fixed block, and a rectangular hole for the positioning column to move is opened on one side of the two fixed blocks.

[0008] Preferably, the outer wall of the first support rod is hinged with a first fan blade via a connecting hinge, the outer wall of the second support rod is connected with a second fan blade via a rigid connector, and the interior of the support seat is connected with a movable valve plate via a driving assembly.

[0009] Preferably, the driving assembly includes a connecting frame fixed on the inner wall of the support seat, a driving motor is arranged in the connecting frame, the output end of the driving motor passes through the connecting frame and is connected to a primary driving wheel, the bottom of the primary driving wheel is meshed and connected to a primary driven wheel, the primary driven wheel is connected to a secondary driving wheel through a connecting shaft, the bottom of the secondary driving wheel is meshed and connected to a secondary driven wheel, and one side of the secondary driven wheel is connected to a movable valve plate through a connecting rod.

[0010] Preferably, a valve disc is fixedly connected inside the support seat and between the first support rod and the movable valve disc, and flow holes are formed on the movable valve disc and the valve disc.

[0011] Preferably, a sealing groove is provided on one side of the inner wall of the venturi valve body.

[0012] Preferably, the first driving block is located at the lower side of the second driving block, and the height of the fixing block located on the left side is higher than that of the fixing block located on the right side.

[0013] The beneficial effects of the utility model are:

[0014] After the sealing surface of the movable valve plate is covered with the valve disc, the movable frame and the fixed block are driven to move by the electric cylinder. When the fixed block moves, it pushes the two positioning columns to rotate. When the two positioning columns rotate, they respectively drive the first driving block and the second driving block to rotate. The first driving block drives the first support rod and the first fan blade to rotate counterclockwise in turn, and when the second driving block drives the second support rod and the second fan blade to rotate clockwise, when the first fan blade and the second fan blade rotate and form a circular sealing surface, the circular sealing surface is pressed tightly against the sealing groove, which is beneficial to protecting the interior of the Venturi valve, preventing the Venturi valve from leaking due to the sealing surface of the movable valve plate failing to completely cover the valve disc, thereby improving the sealing performance of the Venturi valve, and achieving a good sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of a Venturi valve with an anti-leakage structure proposed by the utility model;

[0016] Figure 2 A schematic diagram of the connection structure between a Venturi valve body and a support frame of a Venturi valve with an anti-leakage structure proposed by the utility model;

[0017] Figure 3 A Venturi valve with a leak-proof structure proposed by the utility model Figure 2The schematic diagram of the structure at the enlarged point A in the middle;

[0018] Figure 4 A schematic diagram of the internal structure of a Venturi valve body of a Venturi valve with an anti-leakage structure proposed by the utility model;

[0019] Figure 5 This is a schematic diagram of the connection structure between the first and second blades of a Venturi valve with an anti-leakage structure proposed by the utility model and the valve disc in the open and closed state.

[0020] In the figure:

[0021] 1. Support seat; 2. Venturi valve body; 3. Support frame; 301. Electric cylinder; 302. Moving frame; 303. Fixed block; 4. First support rod; 401. First drive block; 5. Second support rod; 501. Second drive block; 6. Positioning column; 7. Connecting hinge; 701. First fan blade; 8. Rigid connector; 801. Second fan blade; 9. Connecting frame; 901. Drive motor; 902. Primary driving wheel; 903. Primary driven wheel; 904. Secondary driving wheel; 905. Secondary driven wheel; 10. Moving valve plate; 11. Valve disc; 12. Sealing groove. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0024] The standard parts used in the utility model can all be purchased from the market, and special-shaped parts can be customized according to the instructions and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt the conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology, which will not be described in detail here.

[0025] Example

[0026] Reference Figure 1-5 A venturi valve with an anti-leakage structure comprises three groups of support seats 1, a venturi valve body 2 is fixedly connected to the middle of the three groups of support seats 1, a support frame 3 is fixedly connected to the top side of the venturi valve body 2, an electric cylinder 301 is arranged on one side of the support frame 3, a mobile frame 302 is connected to the output end of the electric cylinder 301, and both sides of the inner wall of the mobile frame 302 are fixedly connected to fixed blocks 303;

[0027] A first support rod 4 is arranged inside the venturi valve body 2, a second support rod 5 is sleeved on the middle part of the first support rod 4, the top of the first support rod 4 extends to the outside of the support seat 1 and is fixedly connected to the first drive block 401, the top of the second support rod 5 extends to the outside of the support seat 1 and is fixedly connected to the second drive block 501, the first drive block 401 and the second drive block 501 are fixedly connected to the side of the fixed block 303 close to the first drive block 401 and the second drive block 501 are fixedly connected to the positioning column 6, and a rectangular hole for the positioning column 6 to move is opened on one side of the two fixed blocks 303.

[0028] The outer wall of the first support rod 4 is hinged with the first fan blade 701 through the connecting hinge 7, the outer wall of the second support rod 5 is connected with the second fan blade 801 through the rigid connecting piece 8, and the interior of the support seat 1 is connected with the movable valve plate 10 through the driving component.

[0029] The driving assembly includes a connecting frame 9 fixed on the inner wall of the support seat 1, and a driving motor 901 is arranged in the connecting frame 9. The output end of the driving motor 901 passes through the connecting frame 9 and is connected to a primary driving wheel 902. The bottom of the primary driving wheel 902 is meshed and connected to a primary driven wheel 903. The primary driven wheel 903 is connected to a secondary driving wheel 904 through a connecting shaft. The bottom of the secondary driving wheel 904 is meshed and connected to a secondary driven wheel 905. One side of the secondary driven wheel 905 is connected to the movable valve plate 10 through a connecting rod.

[0030] A valve flap 11 is fixedly connected inside the support seat 1 and between the first support rod 4 and the movable valve disc 10 . Both the movable valve disc 10 and the valve flap 11 are provided with flow holes.

[0031] A sealing groove 12 is formed on one side of the inner wall of the venturi valve body 2 .

[0032] The first driving block 401 is located at the lower side of the second driving block 501 , and the height of the fixing block 303 located on the left side is higher than that of the fixing block 303 located on the right side.

[0033] In this embodiment, when the venturi valve body 2 needs to be completely closed, the driving motor 901 is first started to drive the primary driving wheel 902 to rotate. When the primary driving wheel 902 rotates, the primary driven wheel 903 is driven to mesh with it. When the primary driven wheel 903 rotates, the secondary driving wheel 904 is driven to rotate through the connecting shaft. When the secondary driving wheel 904 rotates, the secondary driven wheel 905 is driven to mesh with it. Therefore, when the secondary driven wheel 905 rotates, the movable valve plate 10 is driven to rotate through the connecting rod. When the movable valve plate 10 rotates, its non-flow hole surface is turned to the flow hole of the valve disc 11, so that the sealing surface of the movable valve plate 10 covers the flow hole of the valve disc 11.

[0034] Further, after the sealing surface of the movable valve plate 10 covers the valve disc 11, the electric cylinder 301 is then started. When the electric cylinder 301 is running, it drives the movable frame 302 to move toward the side close to the electric cylinder 301. When the movable frame 302 moves, it drives the fixed blocks 303 on both sides to move. Therefore, when the fixed block 303 moves toward the direction of the electric cylinder 301, it pushes the two positioning columns 6 in the rectangular hole to rotate with the first driving block 401 and the second driving block 501 as the fulcrum respectively. When the positioning column 6 on the left side rotates, it drives the second driving block 501 to rotate clockwise. When the positioning column 6 on the right side rotates, it drives the first driving block 401 to rotate counterclockwise. Therefore, when the first driving block 401 rotates, it drives the valve in the Venturi valve. When the second driving block 501 rotates, it drives the second driving block 501 inside the venturi valve body 2 to rotate. When the second driving block 501 rotates, it drives the second support rod 5 to rotate. When the second support rod 5 rotates, it drives the second blade 801 to rotate clockwise. Therefore, when the first blade 701 and the second blade 801 rotate into the sealing groove 12, the first blade 701 and the second blade 801 are tightly attached to the side wall of the sealing groove 12 to form a complete circular sealing surface. The circular sealing surface can protect the interior of the venturi valve body 2, improve the sealing performance of the venturi valve body 2, and reduce the risk of leakage.

[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0037] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A Venturi valve with an anti-leakage structure, comprising three sets of support seats (1), characterized in that: The middle part of the three groups of support seats (1) is fixedly connected to a venturi valve body (2), one side of the top of the venturi valve body (2) is fixedly connected to a support frame (3), one side of the support frame (3) is provided with an electric cylinder (301), the output end of the electric cylinder (301) is connected to a moving frame (302), and both sides of the inner wall of the moving frame (302) are fixedly connected to fixed blocks (303); A first support rod (4) is arranged inside the venturi valve body (2), a second support rod (5) is sleeved in the middle of the first support rod (4), a top of the first support rod (4) extends to the outside of the support seat (1) and is fixedly connected to a first drive block (401), a top of the second support rod (5) extends to the outside of the support seat (1) and is fixedly connected to a second drive block (501), a positioning column (6) is fixedly connected to one side of the first drive block (401) and the second drive block (501) close to the fixed block (303), and a rectangular hole for the positioning column (6) to move is opened on one side of the two fixed blocks (303).

2. A Venturi valve with an anti-leakage structure according to claim 1, characterized in that: The outer wall of the first support rod (4) is hingedly connected to a first fan blade (701) via a connecting hinge (7), the outer wall of the second support rod (5) is connected to a second fan blade (801) via a rigid connecting piece (8), and the interior of the support seat (1) is connected to a movable valve plate (10) via a driving assembly.

3. The Venturi valve with anti-leakage structure according to claim 2, characterized in that: The driving assembly comprises a connecting frame (9) fixed on the inner wall of the support seat (1), a driving motor (901) is arranged in the connecting frame (9), an output end of the driving motor (901) passes through the connecting frame (9) and is connected to a primary driving wheel (902), the bottom of the primary driving wheel (902) is meshingly connected to a primary driven wheel (903), the primary driven wheel (903) is connected to a secondary driving wheel (904) via a connecting shaft, the bottom of the secondary driving wheel (904) is meshingly connected to a secondary driven wheel (905), and one side of the secondary driven wheel (905) is connected to the movable valve plate (10) via a connecting rod.

4. The Venturi valve with anti-leakage structure according to claim 2, characterized in that: A valve flap (11) is fixedly connected inside the support seat (1) and between the first support rod (4) and the movable valve plate (10), and flow holes are provided on the movable valve plate (10) and the valve flap (11).

5. The Venturi valve with anti-leakage structure according to claim 1, characterized in that: A sealing groove (12) is provided on one side of the inner wall of the Venturi valve body (2).

6. The Venturi valve with anti-leakage structure according to claim 1, characterized in that: The first driving block (401) is located at the lower side of the second driving block (501), and the height of the fixing block (303) located on the left side is higher than that of the fixing block (303) located on the right side.

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