CN212899764U

CN212899764U - Butterfly valve with high sealing performance

Info

Publication number: CN212899764U
Application number: CN202020492771.8U
Authority: CN
Inventors: 王庆文
Original assignee: Tianjin Binhai Huayi Valve Co ltd
Current assignee: Tianjin Binhai Huayi Valve Co ltd
Priority date: 2020-04-07
Filing date: 2020-04-07
Publication date: 2021-04-06
Anticipated expiration: 2030-04-07

Abstract

The utility model provides a butterfly valve with high sealing performance, which comprises a butterfly valve body, a valve handle, a valve shaft, a valve plate and a base, wherein the top end of the butterfly valve body is fixedly connected with the valve handle, the lower end of the valve handle is fixedly connected with a fixed block, the lower end of the fixed block is fixedly connected with a lead screw, a fastener is fixedly arranged outside the lead screw, the lead screw is far away from one end of a fixedly connected connecting block for connecting the fixed block, the upper end surface of the connecting block is provided with threads, two sides of the connecting block are fixedly connected with a protective shell, the interior of the protective shell is fixedly provided with a valve frame, four through holes are arranged at four corners of the valve frame, the bottom of the connecting block is fixedly connected with a valve shaft vertically penetrating through the butterfly valve body through a bearing, the stability and the practicality of the butterfly valve are improved while the sealing performance of the butterfly valve is improved.

Description

Butterfly valve with high sealing performance

Technical Field

The utility model belongs to the technical field of the valve, especially, relate to a butterfly valve that leakproofness is high.

Background

The butterfly valve is a regulating valve with simple structure, is mainly applied to the on-off control of low-pressure pipeline media, the valve plate of a closing part of the butterfly valve is a disc, the disc rotates around a valve shaft to achieve the opening and closing, the butterfly valve can be used for controlling various types of fluid flowing butterfly valves such as air, water, steam, slurry, oil products, liquid metal, radioactive media and the like, mainly plays a role in cutting off and throttling, is widely applied in various industries, and is one of the most common valves in the market at present.

But because the butterfly valve is in many dirt, the operational environment of high temperature mostly, dust or impurity get into the gap of valve rod and valve body very easily, have influenced work efficiency, greatly reduced the life of butterfly valve, and then comparatively weak to external protection to the butterfly valve after long-term the use, its leakproofness greatly reduced, dustproof effect is general, and the butterfly valve is at the during operation, and it often the noise is also great, influences staff's normal work.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a butterfly valve that leakproofness is high to solve the long-time leakproofness variation after using of the current butterfly valve that proposes in the above-mentioned background art, and the big problem of noise in the use.

The utility model is realized by the butterfly valve body, the valve handle, the valve shaft, the valve plate and the base, the top end of the butterfly valve body is fixedly connected with the valve handle, the lower end of the valve handle is fixedly connected with the fixed block, the lower end of the fixed block is fixedly connected with the lead screw, the outside of the lead screw is fixedly provided with the fastener, the lead screw is far away from one end of the fixed block and is fixedly connected with the connecting block, the upper end surface of the connecting block is provided with threads, two sides of the connecting block are fixedly connected with the protective shell, the inside of the protective shell is fixedly provided with the valve frame, four through holes are arranged at four corners of the valve frame, the bottom of the connecting block is fixedly connected with the valve shaft vertically penetrating through the butterfly valve body through the bearing, the outer surface of, the fixed valve frame that is provided with in the extrusion circle outside, the valve shaft bottom is through bearing fixedly connected with fixed plate, the screw has been seted up to the fixed plate both sides, the valve frame bottom mounting is provided with the mount, the fixed plate passes through the cooperation of bolt and nut to be connected and mount fixed connection, the protective housing bottom mounting is provided with the base.

In order to avoid the valve to close for a long time, because the pressure that flows in the flow tube leads to the valve to appear becoming flexible to the problem that takes place to leak is regarded as the utility model discloses a butterfly valve that the leakproofness is high, the fixed block is located coupling fastener's one end surface and sets up the movable groove, the fastener is located the fixed buckle that is provided with of coupling fixed block one end, the buckle runs through the setting at the movable inslot, the fixed thread bush that is provided with of fastener inner wall, the fastener passes through thread bush and screw-thread fit connection and swing joint between the connecting block.

In order to improve the leakproofness of whole butterfly valve at the during operation, as the utility model discloses a butterfly valve that leakproofness is high, extrusion circle outer wall fixedly connected with extrusion spring, the one end fixed connection valve frame inner wall of connecting the extrusion circle is kept away from to the extrusion spring.

In order to protect whole butterfly valve and alleviate the noise that its work produced, as the utility model discloses a butterfly valve that leakproofness is high, a plurality of damping spring posts of protecting crust inner wall fixedly connected with, the damping spring post is kept away from the one end fixed connection valve frame outer wall of connecting the protecting crust, the fixed amortization cotton that is provided with of protecting crust inner chamber.

In order to improve the leakproofness of whole butterfly valve at the during operation, as the utility model discloses a butterfly valve that leakproofness is high, the one end of fixed plate and the one end of connecting the connecting block are connected to the valve shaft, and used bearing is the oil blanket bearing.

In getting into the valve body for effectual separation dust and impurity, as the utility model discloses a butterfly valve that leakproofness is high, the surface cover is equipped with the axle sleeve on the valve shaft, the inside fixed dustproof pad that is provided with of axle sleeve, dustproof pad is the elastomer of being made by graphite material, the sealing washer material is polytetrafluoroethylene.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a rotary valve door handle passes through the oil blanket bearing in the connecting block and drives the valve shaft rotation, the valve shaft drives the valve plate and rotates 0 to 90 degrees in the valve frame, thereby reach opening and closing of the whole butterfly valve of control, the valve shaft is when rotating, the oil blanket bearing that both ends set up can improve its leakproofness greatly, avoid appearing leaking the scheduling problem, when the staff need close the valve simultaneously, can pass through fixed connection between screw thread and the thread bush fit connection and the connecting block with the fastener that is provided with on the fixed block, can avoid the valve to close for a long time like this, because the interior stream pressure of flow pipe leads to the valve to appear becoming flexible by force, thereby take place the problem of leaking.

2. Simultaneously when the staff need be closed the valve, can pass through screw thread and thread bush accordant connection with the fastener that is provided with on the fixed block and fixed connection between the connecting block, can avoid the valve to close for a long time like this, because the pressure of flowing in the flow tube leads to the valve to appear becoming flexible to the problem of emergence leakage. The dustproof pad of axle sleeve accessible that the valve shaft surface set up can be effectual separation dust and impurity get into in the valve body to the extension the utility model discloses a life.

Drawings

Fig. 1 is a schematic view of the overall structure of a butterfly valve with high sealing performance;

FIG. 2 is a schematic side view of a butterfly valve with high sealing performance according to the present invention;

fig. 3 is an enlarged view at a position a of a schematic structural diagram of a butterfly valve with high sealing performance according to the present invention;

in the figure: 1. a butterfly valve body; 2. a fixed block; 3. a fastener; 4. a screw rod; 5. connecting blocks; 6. a protective shell; 7. a valve shaft; 8. a valve frame; 9. a valve plate; 10. a seal ring; 11. extruding a ring; 12. a valve frame; 13. A fixing plate; 14. a fixed mount; 15. a base; 16. a through hole; 17. a shaft sleeve; 18. a compression spring; 19. A shock absorbing spring post; 20. a dust-proof pad; 21. a movable groove; 22. buckling;

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In addition, in the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

As shown in figures 1-3, the utility model provides a butterfly valve with high sealing performance, which comprises a butterfly valve body 1, a valve handle, a valve shaft 7, a valve plate 9 and a base 15, wherein the top end of the butterfly valve body 1 is fixedly connected with the valve handle, the lower end of the valve handle is fixedly connected with a fixed block 2, the lower end of the fixed block 2 is fixedly connected with a lead screw 4, a fastener 3 is fixedly arranged outside the lead screw 4, one end of the lead screw 4 far away from the fixed block 2 is fixedly connected with a connecting block 5, the upper end surface of the connecting block 5 is provided with threads, two sides of the connecting block 5 are fixedly connected with a protective shell 6, a valve frame 8 is fixedly arranged inside the protective shell 6, four corners of the valve frame 8 are provided with four through holes 16, the bottom of the connecting block 5 is fixedly connected with the valve shaft 7 vertically penetrating, the fixed extrusion circle 11 that is provided with in the sealing washer 10 outside, the fixed valve frame 12 that is provided with in the extrusion circle 11 outside, the screw has been seted up to 7 bottoms of valve shaft through bearing fixedly connected with fixed plate 13, fixed plate 13 both sides, and 8 bottom mountings of valve frame are provided with mount 14, and fixed plate 13 is connected through the cooperation of bolt and nut and mount 14 fixed connection, and 6 bottom mountings of protecting crust are provided with base 15.

In this embodiment: the utility model discloses at the during operation, the staff is fixed in the butterfly valve between two flow tubes through-hole 16 on the valve frame 8, and the staff passes through 5 interior oil blanket bearings of connecting block through the rotary valve door handle and drives 7 rotations of valve shaft, and valve shaft 7 drives valve plate 9 rotatory 0 to 90 degrees in valve frame 12 to reach opening and closing of the whole butterfly valve of control.

Specifically, the outer surface of one end of the fixing block 2, which is located at the connecting fastener 3, is provided with a movable groove 21, the fastener 3 is located at one end of the connecting fixing block 2 and is fixedly provided with a buckle 22, the buckle 22 runs through the movable groove 21, the inner wall of the fastener 3 is fixedly provided with a threaded sleeve, and the fastener 3 is connected with the connecting block 5 through the threaded sleeve and the threaded fit and is movably connected with the connecting block.

In this embodiment: simultaneously when the staff need be closed the valve, can pass through screw thread and thread bush accordant connection with fastener 3 that are provided with on the fixed block 2 and fixed connection between the connecting block 5, can avoid the valve to close for a long time like this, because the pressure that flows in the flow tube leads to the valve to appear becoming flexible to take place the problem of leaking.

Specifically, the outer wall of the extrusion ring 11 is fixedly connected with an extrusion spring 18, and one end of the extrusion spring 18 far away from the end connected with the extrusion ring 11 is fixedly connected with the inner wall of the valve frame 12.

In this embodiment: the sealing ring slightly deforms under the action of the extrusion spring 18, so that the attaching force of the sealing ring 10 and the extrusion ring 11 is increased, and the sealing performance of the whole butterfly valve during working is further improved.

Concretely, a plurality of damping spring posts 19 of 6 inner walls fixedly connected with of protecting crust, damping spring post 19 keep away from the 8 outer walls of one end fixed connection valve frames of connecting protecting crust 6, and 6 inner chambers of protecting crust are fixed and are provided with the amortization cotton.

In this embodiment: the utility model discloses set up protecting crust 6, but the external environment of greatly reduced is to the influence of butterfly valve, and the damping spring post 19 that sets up on the inner wall of protecting crust 6 can avoid appearing the butterfly valve bump in the use and lead to the impaired problem of butterfly valve, and the noise that the cotton greatly reduced butterfly valve that the amortization that sets up in protecting crust 6 sent at the during operation to reduce the influence to the staff.

Specifically, the valve shaft 7 is connected with one end of the fixing plate 13 and one end of the connecting block 5, and all the bearings are oil seal bearings.

In this embodiment: when the valve shaft rotates, the oil seal bearings arranged at the two ends can greatly improve the sealing performance of the valve shaft, and the problems of leakage and the like are avoided.

Specifically, the outer surface cover of valve shaft 7 is equipped with axle sleeve 17, and axle sleeve 17 is inside to be fixed to be provided with dustproof pad 20, and dustproof pad 20 is the elastomer of making by graphite material, and sealing washer 10 material is polytetrafluoroethylene.

In this embodiment: the axle sleeve 17 accessible dustproof pad 20 of the 7 surface settings of valve shaft can effectual separation dust and impurity get into in the valve body to the extension the utility model discloses a life, sealing washer 10 are formed by the preparation of poly tetrachloroethylene material, have the compressibility.

The utility model discloses a theory of operation: the utility model discloses at the during operation, the staff is fixed in the butterfly valve between two flow tubes through-hole 16 on the valve frame 8, the staff passes through the rotary valve door handle and drives 7 rotations of valve shaft through the oil blanket bearing in connecting block 5, valve shaft 7 drives 0 to 90 degrees of valve plate 9 rotatory in valve frame 12, thereby reach opening and closing of the whole butterfly valve of control, the valve shaft is when rotating, the oil blanket bearing that both ends set up can improve its leakproofness greatly, avoid appearing leaking the scheduling problem, when the staff need close the valve simultaneously, can be with fastener 3 that are provided with on the fixed block 2 through screw thread and thread bush fit connection and connecting block 5 between fixed connection, can avoid the valve to close for a long time like this, because the flow pressure leads to the valve to appear becoming flexible in the flow tube by force, thereby take place the problem of leaking. The shaft sleeve 17 arranged on the outer surface of the valve shaft 7 can effectively prevent dust and impurities from entering the valve body through the dustproof pad 20, thereby prolonging the service life of the utility model, the sealing ring 10 is made of the polytetrafluoroethylene material and has compressibility, slightly deforms under the action of the extrusion spring 18, increases the joint force of the sealing ring 10 and the extrusion ring 11, thereby improving the sealing performance of the whole butterfly valve during working, and simultaneously the utility model is provided with a protective shell 6, the influence of the external environment on the butterfly valve can be greatly reduced, the damping spring column 19 arranged on the inner wall of the protective shell 6 can avoid the problem that the butterfly valve is damaged due to collision in the use process, the noise reduction cotton arranged in the protective shell 6 can greatly reduce the noise generated when the butterfly valve works, thereby reduce the influence to the staff, the utility model discloses convenient to use has also improved its steadiness and practicality when having improved the leakproofness of butterfly valve.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a butterfly valve that leakproofness is high, includes butterfly valve body (1), valve handle, valve shaft (7), valve plate (9) and base (15), its characterized in that: the top end of the butterfly valve body (1) is fixedly connected with a valve handle, the lower end of the valve handle is fixedly connected with a fixed block (2), the lower end of the fixed block (2) is fixedly connected with a screw rod (4), a fastener (3) is fixedly arranged on the outer side of the screw rod (4), one end of the screw rod (4) far away from the fixed block (2) is fixedly connected with a connecting block (5), the upper end surface of the connecting block (5) is provided with threads, two sides of the connecting block (5) are fixedly connected with protective shells (6), a valve frame (8) is fixedly arranged in the protective shells (6), four through holes (16) are formed in four corners of the valve frame (8), the bottom of the connecting block (5) is fixedly connected with a valve shaft (7) vertically penetrating through the butterfly valve body (1) through a bearing, and the outer surface of, valve plate (9) outside is fixed and is provided with sealing washer (10), fixed extrusion ring (11) that is provided with in the sealing washer (10) outside, the fixed valve frame (12) that is provided with in extrusion ring (11) outside, bearing fixedly connected with fixed plate (13) are passed through to valve shaft (7) bottom, the screw has been seted up to fixed plate (13) both sides, valve frame (8) bottom mounting is provided with mount (14), fixed plate (13) are connected with mount (14) fixed connection through the cooperation of bolt and nut, protecting crust (6) bottom mounting is provided with base (15).

2. The butterfly valve with high sealing performance according to claim 1, wherein: the fixing block (2) is located the one end surface of connecting fastener (3) and sets up activity groove (21), fastener (3) are located the fixed buckle (22) that is provided with of connecting fixing block (2) one end, buckle (22) run through the setting in activity groove (21), the fixed thread bush that is provided with of fastener (3) inner wall, swing joint between fastener (3) are connected and connecting block (5) through thread bush and screw-thread fit.

3. The butterfly valve with high sealing performance according to claim 1, wherein: the outer wall of the extrusion ring (11) is fixedly connected with an extrusion spring (18), and one end, far away from the extrusion ring (11), of the extrusion spring (18) is fixedly connected with the inner wall of the valve frame (12).

4. The butterfly valve with high sealing performance according to claim 1, wherein: the damping spring type valve is characterized in that a plurality of damping spring columns (19) are fixedly connected to the inner wall of the protective shell (6), one end of each damping spring column (19) far away from the outer wall of the valve frame (8) fixedly connected with the protective shell (6), and silencing cotton is fixedly arranged in the inner cavity of the protective shell (6).

5. The butterfly valve with high sealing performance according to claim 1, wherein: the valve shaft (7) is connected with one end of the fixing plate (13) and one end of the connecting block (5), and all the bearings are oil seal bearings.

6. The butterfly valve with high sealing performance according to claim 1, wherein: the outer surface cover of valve shaft (7) is equipped with axle sleeve (17), axle sleeve (17) inside fixed dustproof pad (20) that is provided with, dustproof pad (20) are the elastomer of making by graphite material, sealing washer (10) material is polytetrafluoroethylene.