CN211951469U

CN211951469U - Butterfly valve with good sealing stability

Info

Publication number: CN211951469U
Application number: CN202020302082.6U
Authority: CN
Inventors: 陈丽
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-12
Filing date: 2020-03-12
Publication date: 2020-11-17
Anticipated expiration: 2030-03-12

Abstract

The utility model discloses a butterfly valve with sealing stability is good, including the butterfly valve casing, the top of butterfly valve casing is provided with the transmission case, one side of transmission case is provided with the rotation handle, be provided with the valve column between transmission case and the butterfly valve casing, the lower extreme of transmission case is provided with the valve shaft that alternates the valve column and run through the butterfly valve casing middle part, the carriage has set gradually between the inside of butterfly valve casing and butterfly valve board one and the butterfly valve board two, sealing washer and elastic ring, the inner wall looks fixed connection of carriage and butterfly valve casing, the sealing washer is connected with butterfly valve board one and butterfly valve board two, fixedly connected with elastic ring between sealing washer and the carriage, the sealing washer is by high temperature resistant layer, corrosion resistant layer, low temperature resistant layer, strengthening layer and ageing resistant layer are constituteed, the inside of elastic ring is close to the inside of carriage and is provided with the recess, the inside of recess is provided with a plurality. Has the advantages that: the sealing performance and the stability of the butterfly valve are improved, and the service life of the butterfly valve sealing element is prolonged.

Description

Butterfly valve with good sealing stability

Technical Field

The utility model relates to a butterfly valve technical field particularly, relates to a butterfly valve with sealing stability is good.

Background

A butterfly valve, also called a flap valve, is a regulating valve with simple structure, and can be used for the on-off control of low-pressure pipeline media, namely a valve which is opened and closed by rotating around a valve shaft, wherein a closing member (a valve clack or a butterfly plate) is a disk. The valve can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like. The pipe mainly plays a role in cutting off and throttling. The butterfly valve need often close the valve plate and open, when closing the valve plate and open, the valve plate often contacts with the sealing member, wears to cause the sealing member sealing performance to reduce easily to the sealing member, causes the leakproofness than relatively poor.

An effective solution to the problems in the related art has not been proposed yet.

SUMMERY OF THE UTILITY MODEL

To the problem among the correlation technique, the utility model provides a butterfly valve with sealing stability is good to overcome the above-mentioned technical problem that current correlation technique exists.

Therefore, the utility model discloses a specific technical scheme as follows:

the utility model provides a butterfly valve with sealing stability is good, includes butterfly valve casing, the top of butterfly valve casing is provided with the transmission case, one side of transmission case is provided with the rotation handle, the transmission case with be provided with the valve stem between the butterfly valve casing, the lower extreme of transmission case is provided with the interlude the valve stem runs through the valve shaft at butterfly valve casing middle part, the valve shaft is located the inside both sides of butterfly valve casing are provided with butterfly valve plate one and butterfly valve plate two respectively, the lower extreme of butterfly valve casing is provided with the disk seat, the inside of butterfly valve casing with butterfly valve plate one with set gradually link frame, sealing washer and elastic ring between the butterfly valve plate two, the link frame with the inner wall looks fixed connection of butterfly valve casing, the sealing washer with butterfly valve plate one with butterfly valve plate two is connected, the sealing washer with fixedly connected with elastic ring between the link frame, the sealing washer is by high temperature resistant layer, The low-temperature-resistant and anti-aging elastic ring is characterized by comprising a corrosion-resistant layer, a low-temperature-resistant layer, a reinforcing layer and an aging-resistant layer, wherein the corrosion-resistant layer is arranged at the lower end of the high-temperature-resistant layer, the low-temperature-resistant layer is arranged at the lower end of the corrosion-resistant layer, the reinforcing layer is arranged at the lower end of the low-temperature-resistant layer, the aging-resistant layer is arranged at the lower end of the reinforcing layer, a groove is formed in the elastic ring close to the connecting frame, and a plurality of connecting springs are arranged.

Furthermore, an anti-slip sleeve is arranged on the rotating handle.

Furthermore, a connecting block is arranged between the first butterfly valve plate and the second butterfly valve plate and the side edge of the valve shaft, and fixing bolts fixed with the first butterfly valve plate and the second butterfly valve plate are arranged on the connecting block.

Furthermore, the high temperature resistant layer is made of hydrogenated nitrile rubber material.

Further, the aging-resistant layer is made of carborundum materials.

Further, the corrosion-resistant layer is made of polytetrafluoroethylene.

Further, the low temperature resistant layer is a polybutadiene material.

Furthermore, the strengthening layer is made of a high-strength low-elongation polyester fiber filament material.

The utility model provides a butterfly valve with sealing stability is good, beneficial effect as follows: the utility model discloses a high temperature resistant layer, corrosion-resistant layer, low temperature resistant layer, strengthening layer and ageing resistance layer effectively make resistant high low temperature, corrosion-resistant and the stability that the sealing washer has, increase the laminating power of elasticity circle and sealing washer, and then improve the leakproofness, adopt two valve plates, further improved the leakproofness of butterfly valve, promoted the sealing performance and the stability ability of butterfly valve, prolonged the life of butterfly valve sealing member.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a butterfly valve with good sealing stability according to an embodiment of the present invention;

fig. 2 is a structural diagram of a seal ring of a butterfly valve with good sealing stability according to an embodiment of the present invention;

fig. 3 is a schematic diagram of an elastic ring of a butterfly valve with good sealing stability according to an embodiment of the present invention.

In the figure:

1. a butterfly valve casing; 2. a transmission case; 3. rotating the handle; 4. a spool; 5. a valve shaft; 6. a first butterfly valve plate; 7. a second butterfly valve plate; 8. a valve seat; 9. a connecting frame; 10. a seal ring; 11. an elastic ring; 12. a high temperature resistant layer; 13. a corrosion-resistant layer; 14. a low temperature resistant layer; 15. a strengthening layer; 16. an aging-resistant layer; 17. a groove; 18. a connecting spring; 19. connecting blocks; 20. and (5) fixing the bolt.

Detailed Description

For further explanation of the embodiments, the drawings are provided as part of the disclosure and serve primarily to illustrate the embodiments and, together with the description, to explain the principles of operation of the embodiments, and to provide further explanation of the invention and advantages thereof, it will be understood by those skilled in the art that various other embodiments and advantages of the invention are possible, and that elements in the drawings are not to scale and that like reference numerals are generally used to designate like elements.

According to the utility model discloses an embodiment provides a butterfly valve that sealing stability is good.

The first embodiment is as follows:

as shown in fig. 1 to 3, a butterfly valve with good sealing stability according to an embodiment of the present invention includes a butterfly valve housing 1, a transmission case 2 is disposed above the butterfly valve housing 1, a rotation handle 3 is disposed on one side of the transmission case 2, a valve post 4 is disposed between the transmission case 2 and the butterfly valve housing 1, a valve shaft 5 inserted into the valve post 4 and penetrating through the middle of the butterfly valve housing 1 is disposed at the lower end of the transmission case 2, a first butterfly valve plate 6 and a second butterfly valve plate 7 are disposed at two sides of the interior of the butterfly valve housing 1 of the valve shaft 5, respectively, a valve seat 8 is disposed at the lower end of the butterfly valve housing 1, a connection frame 9, a sealing ring 10 and an elastic ring 11 are sequentially disposed between the interior of the butterfly valve housing 1 and the first butterfly valve plate 6 and the second butterfly valve plate 7, the connection frame 9 is fixedly connected to the inner wall of the butterfly valve housing 1, the sealing ring 10 is connected to the first butterfly valve plate 6 and the second butterfly valve plate 7, the sealing ring 10 with fixedly connected with elastic ring 11 between the connection frame 9, sealing ring 10 comprises high temperature resistant layer 12, corrosion-resistant layer 13, low temperature resistant layer 14, strengthening layer 15 and ageing-resistant layer 16, the lower extreme of high temperature resistant layer 12 is provided with corrosion-resistant layer 13, the lower extreme of corrosion-resistant layer 13 is provided with low temperature resistant layer 14, the lower extreme of low temperature resistant layer 14 is provided with strengthening layer 15, the lower extreme of strengthening layer 15 is provided with ageing-resistant layer 16, the inside of elastic ring 11 is close to the inside of connection frame 9 is provided with recess 17, the inside of recess 17 is provided with a plurality of connecting spring 18.

Example two:

as shown in fig. 1-3, the turning handle 3 is provided with an anti-slip sleeve. And a connecting block 19 is arranged between the first butterfly valve plate 6 and the second butterfly valve plate 7 and the side edge of the valve shaft 5, and a fixing bolt 20 fixed with the first butterfly valve plate 6 and the second butterfly valve plate 7 is arranged on the connecting block 19.

As shown in fig. 1-3, the high temperature resistant layer 12 is made of hydrogenated nitrile rubber. The aging-resistant layer 16 is made of carborundum materials. The corrosion-resistant layer 13 is made of polytetrafluoroethylene. The low temperature resistant layer 14 is a polybutadiene material. The strengthening layer 15 is made of high-strength low-elongation polyester fiber filament material.

For the convenience of understanding the technical solution of the present invention, the following detailed description is made on the working principle or the operation mode of the present invention in the practical process.

In practical application, the strengthening layer 15 is a high-strength low-elongation polyester fiber filament material, the stress strength of the sealing ring 10 is improved, the tensile strength and the shearing performance are improved, the high-temperature resistant layer 14 can be used for increasing the high-temperature resistance of the sealing ring 10, the sealing performance of the sealing ring 10 is prevented from being influenced by high temperature, through the low-temperature resistant layer 14, the low-temperature resistance of the sealing ring 10 can be increased, the sealing performance of the sealing ring 10 is prevented from being influenced by low temperature, through the aging resistant layer 16, the aging speed of the sealing ring 10 can be reduced, the service life of the sealing ring 10 is prolonged, through the corrosion resistant layer 13, the corrosion resistance of the sealing ring 10 can be increased. Make resistant high low temperature, corrosion-resistant and stability that sealing washer 10 has, elastic ring 11 is formed by the preparation of poly tetrachloroethylene material, has the compressibility, takes place slight deformation under extrusion coupling spring 18's effect, increases elastic ring 11 and sealing washer 10's laminating power, and then improves the leakproofness, adopts two valve plates, has further improved the leakproofness of butterfly valve, has promoted the sealing performance and the stability ability of butterfly valve, has prolonged the life of butterfly valve sealing member.

To sum up, with the aid of the above technical scheme of the utility model, through high temperature resistant layer 12, corrosion-resistant layer 13, low temperature resistant layer 14, strengthening layer 15 and ageing-resistant layer 16, effectively make high low temperature resistant that sealing washer 10 has, corrosion-resistant and stability, increase the laminating power of elastic ring 11 and sealing washer 10, and then improve the leakproofness, adopt two valve plates, further improved the leakproofness of butterfly valve, promoted the sealing performance and the stability ability of butterfly valve, prolonged the life of butterfly valve sealing member.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The butterfly valve with good sealing stability is characterized by comprising a butterfly valve casing (1), a transmission case (2) is arranged above the butterfly valve casing (1), a rotating handle (3) is arranged on one side of the transmission case (2), a valve post (4) is arranged between the transmission case (2) and the butterfly valve casing (1), the lower end of the transmission case (2) is provided with a valve shaft (5) which penetrates through the valve post (4) and penetrates through the middle part of the butterfly valve casing (1), a butterfly valve plate I (6) and a butterfly valve plate II (7) are respectively arranged on two sides of the inner part of the butterfly valve casing (1) of the valve shaft (5), a valve seat (8) is arranged at the lower end of the butterfly valve casing (1), a connecting frame (9), a sealing ring (10) and an elastic ring (11) are sequentially arranged between the inner part of the butterfly valve casing (1) and the butterfly valve plate I (6) and the butterfly valve plate II (7), the butterfly valve is characterized in that the connecting frame (9) is fixedly connected with the inner wall of the butterfly valve casing (1), the sealing ring (10) is fixedly connected with the first butterfly valve plate (6) and the second butterfly valve plate (7), the sealing ring (10) is fixedly connected with the elastic ring (11) between the connecting frame (9), the sealing ring (10) is composed of a high-temperature-resistant layer (12), an anti-corrosion layer (13), a low-temperature-resistant layer (14), a reinforcing layer (15) and an aging-resistant layer (16), the lower end of the high-temperature-resistant layer (12) is provided with the anti-corrosion layer (13), the lower end of the anti-corrosion layer (13) is provided with the low-temperature-resistant layer (14), the lower end of the low-temperature-resistant layer (14) is provided with the reinforcing layer (15), the lower end of the reinforcing layer (15) is provided with the aging-resistant layer (16), the inside of the elastic ring (11) is close to the inside of the connecting frame (9, a plurality of connecting springs (18) are arranged in the groove (17).

2. The butterfly valve with good sealing stability according to claim 1, characterized in that the rotating handle (3) is provided with an anti-slip sleeve.

3. The butterfly valve with good sealing stability according to claim 1, wherein a connecting block (19) is arranged between the first butterfly valve plate (6) and the second butterfly valve plate (7) and the side edge of the valve shaft (5), and a fixing bolt (20) fixed with the first butterfly valve plate (6) and the second butterfly valve plate (7) is arranged on each connecting block (19).

4. The butterfly valve with good sealing stability according to claim 1, wherein the high temperature resistant layer (12) is made of hydrogenated nitrile rubber.

5. The butterfly valve with good sealing stability of claim 1, wherein said aging-resistant layer (16) is a silicon carbide material.

6. A butterfly valve with good sealing stability according to claim 1, characterised in that said corrosion-resistant layer (13) is of teflon material.

7. The butterfly valve with good sealing stability according to claim 1, wherein said low temperature resistant layer (14) is a polybutadiene material.

8. The butterfly valve with good sealing stability according to claim 1, wherein the reinforcing layer (15) is made of a high-strength low-elongation polyester fiber filament material.