CN219639475U

CN219639475U - Integrated soft sealing high-temperature butterfly valve

Info

Publication number: CN219639475U
Application number: CN202321014734.6U
Authority: CN
Inventors: 赵云; 顾抗
Original assignee: FORT VALE ENGINEERING SHANGHAI Ltd
Current assignee: FORT VALE ENGINEERING SHANGHAI Ltd
Priority date: 2023-04-28
Filing date: 2023-04-28
Publication date: 2023-09-05
Anticipated expiration: 2033-04-28

Abstract

The integrated soft sealing high-temperature butterfly valve comprises a valve body, wherein a sealing plate is arranged in an inner cavity of the valve body, one end of an upper main shaft is connected above the sealing plate, the other end of the upper main shaft penetrates through the valve body and is fixedly connected with a butterfly handle through a gear shaft, the upper part of the gear shaft is connected with a handle, one end of a lower main shaft is fixedly connected below the side surface of the sealing plate, and the other end of the lower main shaft is movably connected with the valve body through a bottom bushing; the sealing plate side surface is provided with main sealing member along the circumference, and main sealing member lateral surface is inconsistent with the valve body, and main sealing member has offered the lip draw-in groove in the pressure source side, and the inboard of main sealing member is provided with the elastic spring ring, and the elastic spring ring is installed in the mounting groove on the valve body. The utility model overcomes the defects of the prior art, realizes the sealing effect between the outer ring of the sealing plate and the valve body through the main sealing member, and allows pressure to enter the main sealing member through the lip clamping groove arranged on the pressure source side of the main sealing member, so that the pressure is used as sealing force compensation under the condition of high pressure.

Description

Integrated soft sealing high-temperature butterfly valve

Technical Field

The utility model relates to the technical field of butterfly valves, in particular to an integrated soft sealing high-temperature butterfly valve.

Background

The butterfly valve is a valve which uses a disc type opening and closing member to reciprocally rotate to open, close or regulate the flow of medium. The butterfly valve has the advantages of simple structure, small volume, light weight, material consumption saving, small installation size, small driving moment, simple and rapid operation, and good flow regulation function and closing sealing property. Butterfly valves are very widely used. The variety and number of the used materials are still expanding, and the materials develop to high temperature, high pressure, large caliber, high sealing performance, long service life, excellent regulation property and multifunction of a valve. The reliability and other performance indexes of the device reach higher level.

The existing butterfly valve is as patent number CN202120539946.0, and the patent name is: a butt-clamping type high-temperature butterfly valve mainly realizes the sealing effect between the outer ring of a sealing plate and a valve body through a lip-shaped sealing ring, and also realizes the fixed sealing force compensation of the lip-shaped sealing ring through a sealing clamping plate; therefore, the overall strength of the valve is easy to lower, and the lip-shaped sealing ring is always abutted against the sealing plate through the sealing spring, so that the lip-shaped sealing ring can be worn more when the valve is opened or closed, and the service life of the lip-shaped sealing ring is further prolonged.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides the integrated soft sealing high-temperature butterfly valve, which overcomes the defects of the prior art, realizes the sealing effect between the outer ring of the sealing plate and the valve body through the main sealing element, and allows pressure to enter the main sealing element through the lip clamping groove arranged on the pressure source side of the main sealing element, so that the pressure is used as sealing force compensation under the condition of high pressure. And the main sealing element is pushed to move to the side of the sealing plate, so that the problem of sealing force reduction caused by the pressed displacement of the sealing plate is compensated.

In order to achieve the above purpose, the utility model is realized by the following technical scheme:

the integrated soft sealing high-temperature butterfly valve comprises a valve body, wherein a sealing plate is arranged in an inner cavity of the valve body, one end of an upper main shaft is fixedly connected above the side surface of the sealing plate, the other end of the upper main shaft penetrates through the valve body and is fixedly connected with a butterfly handle through a gear shaft, the upper part of the gear shaft is connected with one end of a handle, the other end of the handle is positioned below the butterfly handle and is matched with the butterfly handle, one end of a lower main shaft is fixedly connected below the side surface of the sealing plate, and the other end of the lower main shaft is movably connected with the valve body through a bottom bushing; the sealing plate side surface is provided with the main sealing piece along the circumference, main sealing piece lateral surface is inconsistent with the valve body, the lip draw-in groove has been seted up to the main sealing piece in the pressure source side, the inboard of main sealing piece is provided with the elastic spring ring, the elastic spring ring is installed in the mounting groove on the valve body.

Preferably, the locating pin opening is seted up on handle top surface, the spacing groove has been seted up in the butterfly handle, movable mounting has the handle locating pin in the spacing groove, handle locating pin upper end passes locating pin opening and fixedly connected with split ring, the lower extreme fixed mounting of handle locating pin has the locating piece, handle locating pin surface is provided with the handle spring, the handle spring is located between locating piece and the spacing groove, valve body upper surface fixed mounting has the location filler board, a plurality of locating holes have been seted up on the location filler board surface, locating piece and locating hole assorted.

Preferably, the upper main shaft is movably connected with the inner cavity of the valve body through a bearing, a packing jacket is fixedly arranged on the outer surface of the upper main shaft, which is close to the opening above the valve body, and the packing jacket is abutted between the inner cavity of the valve body and the outer surface of the upper main shaft through a positioning packing plate.

The utility model provides an integrated soft sealing high-temperature butterfly valve. The beneficial effects are as follows: the sealing effect between the outer ring of the sealing plate and the valve body is achieved through the main sealing piece, and the lip clamping groove is formed in the pressure source side of the main sealing piece so as to allow pressure to enter the main sealing piece, so that the pressure can be used as sealing force compensation under the condition of high pressure. And the main sealing element is pushed to move to the side of the sealing plate, so that the problem of sealing force reduction caused by the pressed displacement of the sealing plate is compensated. In addition, the elastic spring ring is arranged on the inner side of the main sealing element to limit the axial displacement size of the main sealing element, so that high-temperature creep can be effectively reduced, and the sealing stability and the temperature resistance are improved; and because the main sealing element has the self-compensating performance of high-pressure sealing capability, the initial sealing pressure is smaller, so that the abrasion during valve opening and closing is small, and the service life is effectively prolonged. And the butterfly valve body is arranged as a complete part, so that the integral strength of the valve is effectively improved, and the stability and reliability of flange connection are improved.

Drawings

In order to more clearly illustrate the utility model or the technical solutions in the prior art, the drawings used in the description of the prior art will be briefly described below.

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic cross-sectional view of the present utility model;

FIG. 3 is a schematic cross-sectional view of the present utility model in reverse-direction pressing operation;

the reference numerals in the figures illustrate:

1. a valve body; 2. a sealing plate; 3. an upper main shaft; 4. a gear shaft; 5. a butterfly handle; 7. a handle; 8. a handle locating pin; 9. a split ring; 10. a positioning block; 11. a handle spring; 12. positioning a filler plate; 13. positioning holes; 14. a lower spindle; 15. a bottom bushing; 16. a main seal; 17. a lip clamping groove; 18. an elastic spring ring; 19. a packing jacket; 20. a limit groove; 21. and (3) a bearing.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings.

1-3, an integrated soft sealing high-temperature butterfly valve comprises a valve body 1, wherein a sealing plate 2 is arranged in an inner cavity of the valve body 1, one end of an upper main shaft 3 is fixedly connected above the side surface of the sealing plate 2, the other end of the upper main shaft 3 penetrates through the valve body 1 and is fixedly connected with a butterfly handle 5 through a gear shaft 4, the upper part of the gear shaft 4 is connected with one end of a handle 7, the other end of the handle 7 is positioned below the butterfly handle 5 and matched with the butterfly handle 5, one end of a lower main shaft 14 is fixedly connected below the side surface of the sealing plate 2, and the other end of the lower main shaft 14 is movably connected with the valve body 1 through a bottom bushing 15; the main seal piece 16 is arranged on the side surface of the sealing plate 2 along the circumference, the outer side surface of the main seal piece 16 is in contact with the valve body 1, the main seal piece 16 is provided with a lip clamping groove 17 at the pressure source side, the inner side of the main seal piece 16 is provided with an elastic spring ring 18, and the elastic spring ring 18 is arranged in a mounting groove on the valve body 1.

Working principle:

when the butterfly valve is used, the butterfly handle 5 is matched with the handle 7 to rotate the butterfly handle 5, and the butterfly handle 5 is fixedly connected with the upper main shaft 3 through the gear shaft 4, so that the upper main shaft 3 is driven to rotate, and then the sealing plate 2 at the lower end of the upper main shaft 3 is driven to rotate, so that the butterfly valve is opened or closed. In the present embodiment, the sealing effect between the outer ring of the sealing plate 2 and the valve body 1 is achieved by the main seal 16, and the pressure is compensated as the sealing force under high pressure by opening the lip clamping groove 17 on the pressure source side of the main seal 16 to allow the pressure to enter the inside of the main seal 16. And pushes the main seal 16 to move towards the closing plate 2, compensating for the problem of reduced sealing force caused by the compressive displacement of the closing plate 2. In addition, the elastic spring ring 18 is arranged on the inner side of the main sealing element 16 to limit the axial displacement dimension of the main sealing element 16, so that high-temperature creep can be effectively reduced, and the sealing stability and the temperature resistance are improved; and because the main seal 16 has self-compensating properties for high pressure sealing capability, its initial sealing pressure is small, so that the wear when the valve is opened and closed is small, and the service life is effectively prolonged. The butterfly valve of this embodiment has saved the sealing splint in the current butterfly valve for the butterfly valve body becomes a complete part, thereby also effectively improves valve bulk strength, especially in the overlap joint siphon when joining in marriage, can improve the sealing performance of valve self. And meanwhile, the stability and the reliability of flange connection are improved. And maintain convenient, need not to dismantle the valve from the jar body, can change the main seal spare.

In addition, in a special case where the butterfly valve is required to operate in a reverse direction, the corresponding main seal 16 may be reversely installed, as shown in fig. 3, the main seal 16 may be reversely installed such that the lip clamping groove 17 faces the direction of the sealing plate 2 (i.e., the pressure source side), and the elastic circlip 18 may be installed between the main seal 16 and the sealing plate 2, so that the pressure may be compensated as the sealing force.

In the second embodiment, as a further preferable scheme of the first embodiment, a positioning pin opening is formed in the upper surface of the handle 7, a limiting groove 20 is formed in the butterfly handle 5, a handle positioning pin 8 is movably mounted in the limiting groove 20, the upper end of the handle positioning pin 8 penetrates through the positioning pin opening and is fixedly connected with a split ring 9, a positioning block 10 is fixedly mounted at the lower end of the handle positioning pin 8, a handle spring 11 is arranged on the outer surface of the handle positioning pin 8, the handle spring 11 is located between the positioning block 10 and the limiting groove 20, a positioning filler plate 12 is fixedly mounted on the upper surface of the valve body 1, a plurality of positioning holes 13 are formed in the surface of the positioning filler plate 12, and the positioning block 10 is matched with the positioning holes 13.

When in use, when the butterfly handle 5 is matched with the handle 7 for butt clamping, the handle locating pin 8 in the limit groove 20 is lifted, the locating block 10 at the lower end of the handle locating pin 8 is separated from the locating hole 13, and then the butterfly handle 5 is rotated to drive the upper main shaft 3 to rotate, and then the sealing plate 2 is driven to rotate, so that the butterfly valve is opened or closed; when the handle 7 is rotated to a designated position, the handle positioning pin 8 is driven to move downwards by the elastic action of the outer surface of the handle positioning pin 8, and then the positioning block 10 is clamped in a proper positioning hole 13, so that the positioning effect on the upper main shaft 3 and the sealing plate 2 is realized.

In the third embodiment, as a further preferable scheme of the first embodiment, the upper main shaft 3 is movably connected with the inner cavity of the valve body 1 through a bearing 21, a packing jacket 19 is fixedly arranged on the outer surface of the upper main shaft 3 near the opening above the valve body 1, and the packing jacket 19 is abutted between the inner cavity of the valve body 1 and the outer surface of the upper main shaft 3 through a positioning packing plate 12. The dynamic sealing effect of the upper main shaft 3 and the inner surface of the valve body 1 is ensured by the stuffing inside the stuffing jacket 19.

The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. The utility model provides an integral type soft seal high temperature butterfly valve, includes valve body (1), valve body (1) inner chamber is provided with shrouding (2), the one end of main shaft (3) is gone up to shrouding (2) side surface top fixed connection, the other end of going up main shaft (3) passes valve body (1) and is fixedly connected with butterfly handle (5) through gear shaft (4), gear shaft (4) top is connected with one end of handle (7), the other end of handle (7) is located the below of butterfly handle (5) and cooperatees with butterfly handle (5), the one end of main shaft (14) under shrouding (2) side surface below fixed connection, the other end of main shaft (14) passes through bottom bush (15) and valve body (1) swing joint down; the method is characterized in that: the sealing plate (2) side surface is provided with main sealing piece (16) along the circumference, main sealing piece (16) lateral surface is inconsistent with valve body (1), lip draw-in groove (17) have been seted up at the pressure source side to main sealing piece (16), the inboard of main sealing piece (16) is provided with elastic spring ring (18), in the mounting groove on valve body (1) is installed to elastic spring ring (18).

2. The integrated soft seal high temperature butterfly valve of claim 1, wherein: locating pin opening is seted up on handle (7) top surface, stop slot (20) have been seted up in butterfly handle (5), movable mounting has handle locating pin (8) in stop slot (20), locating pin opening and fixedly connected with split ring (9) are passed to handle locating pin (8) upper end, the lower extreme fixed mounting of handle locating pin (8) has locating piece (10), handle locating pin (8) surface is provided with handle spring (11), handle spring (11) are located between locating piece (10) and stop slot (20), fixed surface installs location filler board (12) on valve body (1), a plurality of locating holes (13) have been seted up on location filler board (12) surface, locating piece (10) and locating hole (13) assorted.

3. The integrated soft seal high temperature butterfly valve of claim 1, wherein: the upper main shaft (3) is movably connected with the inner cavity of the valve body (1) through a bearing (21), a filler jacket (19) is fixedly arranged on the outer surface of the upper main shaft (3) close to the opening of the upper part of the valve body (1), and the filler jacket (19) is abutted between the inner cavity of the valve body (1) and the outer surface of the upper main shaft (3) through a positioning filler plate (12).