Butterfly valve for adjusting flow

Abstract

The utility model provides a butterfly valve for adjusting flow, and belongs to the technical field of butterfly valves. Comprising a valve main body, connecting flanges are fixedly connected to the two sides of the valve main body, a mounting base is fixedly connected to the top of the valve main body, a square column is rotatably connected to the interior of the mounting base, and an overturning plate is fixedly connected to the exterior of the bottom end of the square column and used for controlling the flow in the valve main body; the top end of the square column is sleeved with a handle. Due to the arrangement of the locking assembly, the handle is effectively prevented from rotating due to accidental collision, so that slight rotation caused by external mistaken touch when the butterfly valve is closed is avoided, and the safety problems of fluid leakage, pressure fluctuation and the like possibly caused by accidental opening or closing of the butterfly valve in a fluid control system are solved. Due to the introduction of the locking assembly, the butterfly valve can be firmly locked in a closed state, so that the safety risk caused by misoperation or external force interference is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to butterfly valve technical field, especially a butterfly valve for adjusting flow. BACKGROUND

[0002] The butterfly valve is also called flap valve, and it is a simple structure regulating valve, and can be used for the on-off control of low-pressure pipeline medium, and the butterfly valve refers to the disc-shaped closing part (valve disc or butterfly plate) which rotates around its own axis in the valve body, and rotates around the valve shaft to achieve opening and closing, and the operation of the butterfly valve can be divided into manual, electric and pneumatic operation modes, wherein the butterfly plate of the manual butterfly valve is installed in the diameter direction of the pipeline, and the disc-shaped butterfly plate rotates around the axis in the cylindrical channel of the butterfly valve body, and the rotation angle is between 0° and 90°, and when the rotation angle is 90°, the valve is in the fully open state, the butterfly valve has simple structure, small size and light weight, only a few parts are needed, and the valve can be quickly opened and closed by rotating 90°, and the operation is simple, and the valve has good fluid control characteristics.

[0003] However, in the use process of the butterfly valve, due to the simple structure of the butterfly valve, the butterfly valve is easy to rotate slightly due to external accidental touch when being closed, so that the butterfly valve cannot be kept in the fully closed state, and the medium leaks, which affects the normal operation and efficiency of the system. Especially in some occasions with high requirements for flow control accuracy, such as chemical industry, food industry and pharmaceutical industry, the slight rotation of the butterfly valve may cause the quality of the product to decrease or safety accidents to occur, therefore, the utility model provides a butterfly valve for adjusting flow to meet the needs. UTILITY MODEL CONTENTS

[0004] In order to solve the above technical problems, the utility model provides the following technical scheme:

[0005] A butterfly valve for adjusting flow, comprising a valve body, both sides of the valve body are fixedly connected with connecting flanges, the top of the valve body is fixedly connected with a mounting seat, a square column is rotatably connected in the mounting seat, a turnover plate is fixedly connected outside the bottom end of the square column, the turnover plate is used for controlling the flow in the valve body, a handle is sleeved outside the top end of the square column, and a connecting cover is screwed on the top of the square column; a locking assembly is used for preventing the handle from rotating due to accidental collision, the locking assembly is connected with the handle, and a protective cover is arranged outside the locking assembly.

[0006] Optionally, the locking assembly comprises a mounting groove opened in the handle, both sides of the mounting groove are provided with guide rails, the guide rails in the mounting groove are slidably connected with a sliding plate, a first matching inclined surface is opened at the top of one side of the sliding plate, the handle is fixedly connected with a limiting frame above the mounting groove, a pressing column is slidably connected in the limiting frame, the bottom of the pressing column is fixedly connected with an extrusion plate, a second matching inclined surface is arranged at the bottom of the extrusion plate.

[0007] Optionally, the second matching inclined surface is matched with the first matching inclined surface, and the length of the first matching inclined surface is about twice the length of the second matching inclined surface.

[0008] Optionally, a guide column is fixedly connected to one end of the mounting groove, the other end of the guide column is slidably connected with the bottom of the sliding plate, and a return spring is arranged outside the guide column.

[0009] Optionally, a center shaft is fixedly connected above the center of the handle in the mounting groove, a first connecting rod is rotatably connected outside the center shaft, and the bottom end of the first connecting rod is rotatably connected with one end of the sliding plate close to the guide column.

[0010] Optionally, a limiting column is fixedly connected to the top of one end of the handle close to the connecting cover, a limiting block is slidably connected outside the limiting column, a spring is arranged outside the limiting column, one end of the spring is fixedly connected with one side of the limiting block, an active slot for rotating the handle is opened at the bottom of the connecting cover, two limiting holes matched with the limiting block are opened at the top of both sides of the active slot, a second connecting rod is rotatably connected to the other end of the limiting block, and the other end of the second connecting rod is rotatably connected with the top end of the first connecting rod.

[0011] Optionally, a ball is rotatably connected to one end of the handle in the active slot, and an arc-shaped rolling groove for rolling the ball is opened at the top of the active slot and the top of the mounting seat.

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

[0013] In the above scheme, the setting of the locking assembly effectively prevents the handle from rotating due to accidental collision, thereby avoiding the slight rotation of the butterfly valve caused by external misoperation when the butterfly valve is closed. In the fluid control system, the accidental opening or closing of the butterfly valve may cause safety problems such as fluid leakage and pressure fluctuation. The introduction of the locking assembly enables the butterfly valve to be firmly locked in the closed state, thereby reducing the safety risks caused by misoperation or external force interference.

[0014] By setting the ball and the protective cover, the ball and the sliding groove design makes the handle more smooth when rotating, reduces the friction resistance, improves the operation convenience of the butterfly valve. The setting of the protective cover can protect the locking assembly, prevent external factors from damaging the locking assembly, and prolong the service life of the butterfly valve. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a schematic diagram of the three-dimensional structure of the butterfly valve for adjusting flow;

[0016] Figure 2 is a schematic diagram of the cooperating three-dimensional structure of the butterfly valve;

[0017] Figure 3 is a schematic diagram of the cooperating three-dimensional structure of the locking assembly;

[0018] Figure 4 is Figure 3 an enlarged schematic diagram of A.

[0019] REFERENCE NUMERALS

[0020] 1, valve body; 2, connecting flange; 3, mounting seat; 4, turnover plate; 5, connecting cover; 501, movable groove; 502, limiting hole; 6, handle; 601, mounting groove; 7, ball; 8, protective cover; 9, sliding plate; 10, extrusion plate; 11, pressing column; 12, guide column; 13, return spring; 14, No. 1 connecting rod; 15, No. 2 connecting rod; 16, limiting block; 17, limiting column. DETAILED DESCRIPTION

[0021] The butterfly valve for adjusting flow provided by the present application is described in detail below in combination with the drawings and specific embodiments; at the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are preferred embodiments, and for some known technologies, other alternative ways can also be adopted by those skilled in the art.

[0022] As Figures 1 to 4The utility model discloses an embodiment provides a butterfly valve for adjusting flow, including valve main body 1, both sides of valve main body 1 are fixedly connected with the connecting flange 2, the top of valve main body 1 is fixedly connected with the mounting seat 3, the inside rotation of mounting seat 3 is connected with square column, the outside fixed connection of square column bottom end has turned over board 4, and turned over board 4 is used to control the flow in valve main body 1, and the outside of square column top end is equipped with handle 6, and the top of square column is screwed with connecting cover 5, and the bottom of connecting cover 5 is equipped with the movable slot 501 for handle 6 rotation, and the one end of handle 6 in movable slot 501 inside rotation is connected with ball 7, and the top of movable slot 501 inner chamber and the top of mounting seat 3 all are equipped with the arc rolling groove for the rolling of ball 7;Valve main body 1 is connected with pipeline through the connecting flange 2 of both sides, ensures that flange connects closely, and there is no leakage, and mounting seat 3 is fixedly connected at the top of valve main body 1, ensures the connection steady between mounting seat 3 and valve main body 1, square column passes through mounting seat 3, and makes its bottom end fixedly connected with turned over board 4. Turned over board 4 should be able to rotate in valve main body 1 inside flexibly to control flow, and handle 6 is equipped at the top of square column, and handle 6 is fixed on square column through connecting cover 5. Connecting cover 5 should be screwed tightly, prevent loosening, install ball 7 in movable slot 501 of the bottom of connecting cover 5, and ensure that ball 7 can roll flexibly in arc rolling groove, when needing to adjust flow, handle 6 is rotated to drive square column and turned over board 4 rotation. The rotation angle of turned over board 4 determines the passage area in valve main body 1 inside, thereby controls flow, and ball 7 rolls in movable slot 501 and arc rolling groove, so that the rotation of handle 6 is more smooth, and reduces friction and resistance.

[0023] As Figures 1 to 4The locking assembly is used for preventing the handle 6 from rotating due to accidental collision, and is connected with the handle 6. The locking assembly is externally provided with the protective cover 8. The locking assembly comprises the mounting groove 601 which is arranged in the handle 6. Both sides of the inner cavity of the mounting groove 601 are provided with guide rails. The guide rails in the mounting groove 601 are slidably connected with the sliding plate 9. The top of one side of the sliding plate 9 is provided with the first matching inclined surface. The handle 6 is fixedly connected with the limiting frame which is arranged above the mounting groove 601. The limiting frame is slidably connected with the pressing column 11. The bottom of the pressing column 11 is fixedly connected with the extrusion plate 10. The bottom of the extrusion plate 10 is provided with the second matching inclined surface. The second matching inclined surface is matched with the first matching inclined surface. The length of the first matching inclined surface is about twice the length of the second matching inclined surface. One end of the inner cavity of the mounting groove 601 is fixedly connected with the guide column 12. The other end of the guide column 12 is slidably connected with the bottom of the sliding plate 9. The outer portion of the guide column 12 is sleeved with the reset spring 13. The handle 6 is fixedly connected with the central shaft which is arranged above the center of the mounting groove 601. The outer portion of the central shaft is rotatably connected with the first connecting rod 14. The bottom end of the first connecting rod 14 is rotatably connected with one end of the sliding plate 9 which is close to the guide column 12. The top of one end of the handle 6 which is close to the connecting cover 5 is fixedly connected with the limiting column 17. The outer portion of the limiting column 17 is slidably connected with the limiting block 16. The outer portion of the limiting column 17 is sleeved with the spring. One end of the spring is fixedly connected with one side of the limiting block 16. The bottom of the connecting cover 5 is provided with the movable groove 501 which is used for the rotation of the handle 6. Both sides of the top of the movable groove 501 are provided with two limiting holes 502 which are matched with the limiting block 16. The other end of the limiting block 16 is rotatably connected with the second connecting rod 15. The other end of the second connecting rod 15 is rotatably connected with the top end of the first connecting rod 14. When the handle 6 needs to be rotated, the pressing column 11 is pressed, so that the bottom end of the pressing column 11 drives the extrusion plate 10 to move downwards. The extrusion plate 10 extrudes the sliding plate 9 through the inclined matching surface. The sliding plate 9 moves to the other end of the mounting groove 601 through the matching surface, so that the reset spring 13 is compressed. The bottom end of the first connecting rod 14 which is rotatably connected with one end of the sliding plate 9 also moves to one end of the mounting groove 601. Due to the existence of the central shaft, the other end of the first connecting rod 14 moves outward. The other end of the first connecting rod 14 pulls the limiting block 16 to move outward, so that the spring outside the limiting column 17 is compressed. At this time, the limiting block 16 is separated from the limiting hole 502, so that the handle 6 is unlocked, and the valve can be opened and closed. When the operation is completed, the pressing column 11 is released, and the two springs are reset, so that the limiting block 16 is inserted into the corresponding limiting hole 502 again to complete the locking. The locking assembly realizes the quick conversion of locking and unlocking by pressing the pressing column 11.When pressed, the extrusion plate 10 cooperates with the inclined surface of the sliding plate 9, and the first connecting rod 14, the second connecting rod 15 and the limiting block 16 form a high-efficiency transmission system, so that the locking and unlocking actions are rapid and accurate, and the reset spring 13 and the spring outside the limiting column 17 together ensure that the locking assembly can quickly and stably return to the locking position after unlocking. This design not only improves the reliability of the locking assembly, but also reduces wear caused by long-term use. When the limiting block 16 is inserted into the limiting hole 502, it effectively prevents the handle 6 from rotating due to accidental impact, thereby ensuring the stability and safety of the butterfly valve. This is particularly important for application scenarios that require strict control of flow or pressure. The locking assembly is simple and easy to operate. At the same time, since its main components are located inside the handle 6, and an protective cover 8 is provided on the outside, it is easy to maintain and clean, reducing the maintenance cost in the long run.

[0024] The utility model provides a working principle: the valve main part 1 is connected with pipeline through the both sides' connection flange 2, ensures that the flange is connected closely, has no leakage, installs the seat 3 fixed connection in the top of valve main part 1, ensures the connection steady between the seat 3 and valve main part 1, passes through the square column and makes its bottom with the turnover board 4 fixed connection and installs the ball 7 in the movable slot 501 of the bottom of the connecting cover 5, and ensures that the ball 7 can be flexibly rolled in the arc rolling groove, when needing to adjust flow, through rotating handle 6 to drive square column and turnover board 4 rotation. The rotation angle of turnover board 4 decides the passageway area in valve main part 1, thereby controls flow, and the ball 7 rolls in movable slot 501 and arc rolling groove, makes the rotation of handle 6 more smooth, reduces friction and resistance, when needing to rotate handle 6, press press column 11, makes the bottom of press column 11 drive extrusion plate 10 to go down, and extrusion plate 10 will extrude sliding plate 9 through the inclined surface, and sliding plate 9 moves to the other end of installation groove 601 through the fitting inclined surface, so that reset spring 13 is compressed, and the bottom of first connecting rod 14 rotatingly connected with one end of sliding plate 9 also moves to one end of installation groove 601, due to the existence of central shaft, so that the other end of first connecting rod 14 moves outward, and the other end of first connecting rod 14 pulls limiting block 16 to move outward, so that the spring outside limiting column 17 is compressed, at this time, limiting block 16 is separated from limiting hole 502, and then handle 6 is unlocked, and the valve can be opened and closed, when operation is completed, press press column 11 is loosened, and two springs reset, so that limiting block 16 is inserted into corresponding limiting hole 502 again to complete locking, and the locking assembly realizes the rapid conversion of locking and unlocking through press press column 11.

[0025] The utility model covers any alternative, modification, equivalent method and scheme which are made on the essence and range of the utility model; in order to make the public have the thorough understanding of the utility model, the specific details are explained in the above preferred embodiment of the utility model, and the utility model can also be completely understood without the description of these details to the person skilled in the art.

[0026] The above is only the preferred embodiment of the utility model, and it should be pointed out that, for ordinary skilled person in the art, without departing from the principle of the utility model, a number of improvements and refinements can also be made, and these improvements and refinements should also be regarded as the protection range of the utility model.

Claims

1. A butterfly valve for regulating flow, comprising a valve body (1), characterized in that, Both sides of the valve body (1) are fixedly connected with connecting flanges (2), the top of the valve body (1) is fixedly connected with a mounting seat (3), a square column is rotatably connected in the mounting seat (3), a turnover plate (4) is fixedly connected outside the bottom end of the square column, the turnover plate (4) is used for controlling the flow in the valve body (1), a handle (6) is sleeved outside the top end of the square column, and a connecting cover (5) is screwed on the top of the square column. A locking assembly is used for preventing the handle (6) from rotating due to accidental collision, and the locking assembly is connected with the handle (6). The locking assembly is externally provided with a protective cover (8).

2. A butterfly valve for regulating flow according to claim 1, wherein, The locking assembly comprises a mounting groove (601) formed in the handle (6), guide rails are arranged on both sides of the inner cavity of the mounting groove (601), a sliding plate (9) is slidably connected on the guide rails in the mounting groove (601), a first abutting inclined surface is formed in the top of one side of the sliding plate (9), a limiting frame is fixedly connected above the mounting groove (601) of the handle (6), a pressing column (11) is slidably connected in the limiting frame, an extrusion plate (10) is fixedly connected to the bottom of the pressing column (11), and a second abutting inclined surface is arranged on the bottom of the extrusion plate (10).

3. A butterfly valve for regulating flow according to claim 2, wherein, The second abutting inclined surface is abutted with the first abutting inclined surface, and the length of the first abutting inclined surface is about twice the length of the second abutting inclined surface.

4. A butterfly valve for regulating flow according to claim 2, wherein, One end of the inner cavity of the mounting groove (601) is fixedly connected with a guide column (12), the other end of the guide column (12) is slidably connected with the bottom of the sliding plate (9), and the outer surface of the guide column (12) is sleeved with a return spring (13).

5. A butterfly valve for regulating flow according to claim 4, wherein, A central shaft is fixedly connected above the center of the mounting groove (601) of the handle (6), a first connecting rod (14) is rotatably connected to the outer surface of the central shaft, and the bottom end of the first connecting rod (14) is rotatably connected to one end of the sliding plate (9) close to the guide column (12).

6. A butterfly valve for regulating flow according to claim 5, wherein, A limiting column (17) is fixedly connected to the top of one end of the handle (6) close to the connecting cover (5), a limiting block (16) is slidably connected to the outer surface of the limiting column (17), a spring is sleeved on the outer surface of the limiting column (17), one end of the spring is fixedly connected to one side of the limiting block (16), an active groove (501) for rotating the handle (6) is formed in the bottom of the connecting cover (5), two limiting holes (502) matched with the limiting block (16) are formed in the top of both sides of the active groove (501), the other end of the limiting block (16) is rotatably connected with a second connecting rod (15), and the other end of the second connecting rod (15) is rotatably connected with the top end of the first connecting rod (14).

7. A butterfly valve for regulating flow according to claim 6, wherein, A ball (7) is rotatably connected to one end of the handle (6) in the active groove (501), and an arc-shaped rolling groove for rolling the ball (7) is formed in the top of the inner cavity of the active groove (501) and the top of the mounting seat (3).

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