CN212480161U

CN212480161U - Butterfly valve

Info

Publication number: CN212480161U
Application number: CN202020454353.XU
Authority: CN
Inventors: 苏茂彬; 苏亚梅; 孟凡胜
Original assignee: Shandong Yantai Valve Technology Co ltd
Current assignee: Shandong Yantai Valve Technology Co ltd
Priority date: 2020-04-01
Filing date: 2020-04-01
Publication date: 2021-02-05
Anticipated expiration: 2030-04-01

Abstract

The utility model discloses a butterfly valve, which comprises a hollow valve body, a valve rod vertically penetrating through the valve body and a sleeve arranged outside the valve rod, the butterfly plate in the valve body inner chamber, through butterfly round pin fixed connection between butterfly plate and the valve rod, the valve body lower extreme is equipped with the disk seat through the connection of bolt and nut, be equipped with the blind hole below the valve rod, be equipped with spring one between the side that the disk seat is close to the blind hole and the blind hole, valve body and valve rod junction all are equipped with lubricated cover, valve rod lateral surface just is higher than and is equipped with the filler between lubricated cover and the valve body, be equipped with the gland that compresses tightly the filler above the valve body, through bolt and nut fixed connection between gland and the valve body, the one end that the valve rod extends gland is equipped with the bull stick, a valve body side just is close to the dish board and is equipped with annular locking lid, locking lid and valve body junction are equipped with seal ring two. The utility model has the advantages that: the sealing performance and the internal structure universality of the butterfly valve are improved.

Description

Butterfly valve

Technical Field

The utility model relates to a butterfly valve technical field specifically indicates a butterfly valve.

Background

The butterfly valve is a regulating valve with a relatively simple structure, is generally mainly used for cutting off or throttling various types of fluids such as water, various corrosive media, slurry, oil, liquid metal and the like in a pipeline, and is mainly used for various types of fluids, so the sealing performance is particularly important, the material of the part structure of the butterfly valve is different according to the environment in the pipeline, the material of the part is also different, the existing butterfly valve structure is designed specifically, and the production cost and the use cost are high for manufacturers and users due to the structure of the environment.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to solve above-mentioned problem, provide a butterfly valve that improves butterfly valve leakproofness and inner structure commonality.

In order to solve the technical problem, the utility model provides a technical scheme does: a butterfly valve comprises a valve body, a valve rod and a butterfly plate, wherein the valve body is hollow inside, the valve rod vertically penetrates through the valve body, the butterfly plate is sleeved outside the valve rod and in an inner cavity of the valve body, the butterfly plate is fixedly connected with the valve rod through a butterfly pin, a valve seat is arranged at the lower end of the valve body through a bolt nut, a blind hole is formed below the valve rod, a first spring is arranged between the side face, close to the blind hole, of the valve seat and the blind hole, lubricating sleeves are arranged at the joints of the valve body and the valve rod, packing is arranged on the outer side face of the valve rod and higher than the lubricating sleeves and the valve body, a packing gland for compressing the packing is arranged on the upper face of the valve body, the packing gland is fixedly connected with the valve body through the bolt nut, a rotating rod is arranged at one end, extending out of the packing gland, of the, and the upper end and the lower end of the filler are provided with a third sealing washer.

Further, a packing gland for compressing packing is arranged on the valve body, the packing gland and the valve body are fixedly connected through bolts and nuts and replaced by a support, an upper gland is arranged in the support, a second spring is arranged between the support and the packing, and the upper gland, the support and the valve body are fixedly connected through bolts and nuts.

Further, the filler is three layers, the filler is polytetrafluoroethylene TPFE, a gasket is arranged between every two layers of the filler, and the gasket is a graphite flexible gasket.

Furthermore, the outer side surface of the valve rod is positioned between the valve body and the butterfly plate, and thrust bearings are arranged on the inner side and the outer side of each thrust bearing and are fixedly connected with the valve rod and the valve body respectively.

Furthermore, a first sealing washer is arranged at the joint of the valve seat and the valve body.

Due to the adoption of the technical scheme, the beneficial effects of the utility model reside in that: the connection position of each component is provided with a corresponding polytetrafluoroethylene TPFE sealing ring, so that the sealing can be completely realized, the leakage is almost zero, and the sealing device can be used for ultrahigh vacuum working conditions; the utility model discloses every part in is convenient for change, is real removable disk seat, sealing washer, butterfly board, valve rod, wait spare part, and removable wherein the material of spare part adapts to multiple medium and different temperature pipeline environment, and support high platform design (ISO5211) can install manual additional, turbine, electric actuator and pneumatic actuator.

Drawings

Fig. 1 is a schematic structural diagram of a butterfly valve of the present invention.

Fig. 2 is a schematic structural diagram of a butterfly valve of the present invention with a bracket.

Fig. 3 is a left-side view external structure schematic diagram of the butterfly valve with a bracket of the present invention.

As shown in the figure: 1. a valve body; 2. a valve stem; 3. a butterfly plate; 4. a valve seat; 5. a first spring; 6. blind holes; 7. a lubricating sleeve; 8. a filler; 9. a packing gland; 10. a rotating rod; 11. a locking cover; 12. a second sealing washer; 13. sealing washer three; 14. a support; 15. a second spring; 16. a thrust bearing; 17. sealing washer one; 18. a butterfly pin.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

With reference to fig. 1, 2 and 3. A butterfly valve comprises a valve body 1 with a hollow interior, a valve rod 2 vertically penetrating through the valve body 1 and a butterfly plate 3 sleeved outside the valve rod 2 and in an inner cavity of the valve body 1, wherein the butterfly plate 3 is driven by the valve rod 2 to open and close with the valve body 1, the butterfly plate 3 is fixedly connected with the valve rod 2 through a butterfly pin 18, the lower end of the valve body 1 is provided with a valve seat 4 through a bolt nut, a blind hole 6 is arranged below the valve rod 2, a spring I5 is arranged between the side surface of the valve seat 4 close to the blind hole 6 and the blind hole 6, a lubricating sleeve 7 is arranged at the joint of the valve body 1 and the valve rod 2, a packing 8 is arranged on the outer side surface of the valve rod 2 and higher than the lubricating sleeve 7 and the valve body 1, a packing gland 9 for compressing the packing 8 is arranged on the valve body 1, the packing gland 9 is fixedly connected with the valve body 1 through the bolt nut, an annular locking cover 11 is arranged on one side face of the valve body 1 and close to the butterfly plate 3, a second sealing washer 12 is arranged at the joint of the locking cover 11 and the valve body 1, the lower end of the second sealing washer 12 is in close contact with the butterfly plate 3, and a third sealing washer 13 is arranged at the upper end and the lower end of the packing 8.

The improved valve is characterized in that a packing gland 9 for compressing packing 8 is arranged on the valve body 1, the packing gland 9 and the valve body 1 are fixedly connected through bolts and nuts to be replaced by a support 14 arranged on the valve body 1, an upper gland is arranged in the support 14, a second spring 15 is arranged between the support 14 and the packing 8, and the upper gland, the support 14 and the valve body 1 are fixedly connected through bolts and nuts.

The filler 8 is three layers, the filler 8 is polytetrafluoroethylene TPFE, and a gasket is arranged between the filler 8 of each layer.

And the outer side surface of the valve rod 2 is positioned between the valve body 1 and the butterfly plate 3 and is provided with a thrust bearing 16, and the inner side and the outer side of the thrust bearing 16 are fixedly connected with the valve rod 2 and the valve body 1 respectively.

And a first sealing washer 17 is arranged at the joint of the valve seat 4 and the valve body 1.

The utility model discloses when concrete implementation: the rotating rod 10 is driven to rotate manually or electrically, the rotating rod 10 drives the valve rod 2, and the valve rod 2 drives the butterfly plate 3 which is sleeved with the valve rod to turn over and open and close in the inner cavity of the valve body 1 to form an open and close passage; the butterfly plate 3 and the valve rod 4 of the utility model are connected through a butterfly pin 18, the locking cover 11 and the valve body 1 are connected through a bolt and a nut, the valve seat 4 and the valve body 1 are connected through a bolt and a nut, the packing gland 9 and the valve body 1 are connected through a bolt and a nut, and other connection modes with detachable internal structures can be adopted, and the material of parts in the connection modes can be changed to adapt to various media and different temperature pipeline environments; the support 14 is designed as a high platform (ISO5211) and can be additionally provided with a manual actuator, a turbine actuator, an electric actuator and a pneumatic actuator; sealing gaskets are arranged between every two parts, polytetrafluoroethylene TPFE sealing rings are adopted, so that the sealing can be completely realized, the leakage is almost zero, and the ultrahigh vacuum sealing device can be used in ultrahigh vacuum working conditions; a lubricating sleeve 7 is arranged between the valve rod 2 and the valve body 1, so that the butterfly valve is easier to operate, the butterfly valve can be detachably connected, and grease can be conveniently applied to the lubricating sleeve 7 at the later stage; the utility model discloses the product is in the pipeline installation unanimous with current butterfly valve application method with application method, is not tired to state.

The present invention and the embodiments thereof have been described above, but the description is not limited thereto, and the embodiment shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should understand that they should not be limited to the embodiments described above, and that they can design the similar structure and embodiments without departing from the spirit of the invention.

Claims

1. A butterfly valve, its characterized in that: the valve comprises a valve body (1) with a hollow interior, a valve rod (2) vertically penetrating through the valve body (1) and a butterfly plate (3) sleeved outside the valve rod (2) and in an inner cavity of the valve body (1), wherein the butterfly plate (3) is fixedly connected with the valve rod (2) through a butterfly pin (18), a valve seat (4) is arranged at the lower end of the valve body (1) through a bolt nut, a blind hole (6) is arranged below the valve rod (2), a spring I (5) is arranged between the side surface of the valve seat (4) close to the blind hole (6) and the blind hole (6), lubricating sleeves (7) are arranged at the joints of the valve body (1) and the valve rod (2), packing (8) are arranged between the outer side surface of the valve rod (2) and higher than the lubricating sleeves (7) and the valve body (1), a packing gland (9) for compressing the packing (8) is arranged on the valve body (1), and the packing gland (9) is, the valve is characterized in that a rotating rod (10) is arranged at one end, extending out of the packing gland (9), of the valve rod (2), an annular locking cover (11) is arranged on one side face of the valve body (1) and close to the butterfly plate (3), a second sealing washer (12) is arranged at the joint of the locking cover (11) and the valve body (1), the lower end of the second sealing washer (12) is in close contact with the butterfly plate (3), and a third sealing washer (13) is arranged at the upper end and the lower end of the packing (8).

2. A butterfly valve in accordance with claim 1, wherein: the improved valve is characterized in that a packing gland (9) for compressing packing (8) is arranged on the valve body (1), the packing gland (9) is fixedly connected with the valve body (1) through bolts and nuts to be replaced by a support (14) arranged on the valve body (1), an upper gland is arranged in the support (14), a second spring (15) is arranged between the support (14) and the packing (8), and the upper gland, the support (14) and the valve body (1) are fixedly connected through bolts and nuts.

3. A butterfly valve in accordance with claim 1, wherein: the filler (8) is three layers, the filler (8) is polytetrafluoroethylene TPFE, and a gasket is arranged between every two layers of the filler (8).

4. A butterfly valve in accordance with claim 1, wherein: the outer side face of the valve rod (2) is located between the valve body (1) and the butterfly plate (3) and is provided with a thrust bearing (16), and the inner side and the outer side of the thrust bearing (16) are fixedly connected with the valve rod (2) and the valve body (1) respectively.

5. A butterfly valve in accordance with claim 1, wherein: and a first sealing washer (17) is arranged at the joint of the valve seat (4) and the valve body (1).