CN215928423U - Hydraulic sealing type butterfly valve structure - Google Patents

Abstract

The utility model discloses a hydraulic sealing type butterfly valve structure, which comprises a valve shell, a valve shaft, a valve plate and a hydraulic device, wherein the valve shaft is arranged on the valve shell; the valve shell is of an elliptical structure with the cross section in the fluid flowing direction, a water outlet and a water inlet are formed in the two ends of the valve shell in the fluid flowing direction, and shaft holes are formed in the upper end and the lower end of the valve shell; the valve shaft is inserted and installed in the valve shell through the shaft hole; the sealing surface on the side of the valve plate ring is correspondingly matched with the inner wall of the valve shell, and the valve shaft is connected with the valve plate in a penetrating manner along the center position of the valve plate in the height direction; the hydraulic device is connected with a press sealing mechanism of the valve plate through a valve shaft in a driving mode, and the press sealing mechanism corresponds to a sealing ring of a sealing surface on the side of a valve plate ring.

Description

Hydraulic sealing type butterfly valve structure

Technical Field

The utility model relates to the technical field of valves, in particular to a hydraulic sealing type butterfly valve structure.

Background

The butterfly valve is a valve which uses a disc type opening and closing piece to rotate back and forth by about 90 degrees to open, close or adjust the medium flow, has simple structure, small volume, light weight, less material consumption, small installation size, small driving moment, simple and convenient operation and rapidness, and also has good flow adjusting function and closing sealing characteristic, and is one of the fastest valve varieties developed in the last ten years; the existing butterfly valve is provided with a layer of rubber ring on the inner side of the valve seat, when the butterfly plate rotates to a closed state, the edge of the butterfly plate is in contact with the rubber ring, fluid leakage is prevented, and sealing performance is improved.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: in order to overcome the defects in the prior art, the utility model provides a hydraulic sealing type butterfly valve structure which can effectively improve the sealing property of the structure.

The technical scheme is as follows: in order to achieve the purpose, the hydraulic sealing type butterfly valve structure comprises a valve shell, a valve shaft, a valve plate and a hydraulic device; the valve shell is of an elliptical structure with the cross section in the fluid flowing direction, a water outlet and a water inlet are formed in the two ends of the valve shell in the fluid flowing direction, and shaft holes are formed in the upper end and the lower end of the valve shell; the valve shaft is inserted and installed in the valve shell through the shaft hole; the sealing surface on the side of the valve plate ring is correspondingly matched with the inner wall of the valve shell, and the valve shaft is connected with the valve plate in a penetrating manner along the center position of the valve plate in the height direction; the hydraulic device is connected with a press sealing mechanism of the valve plate through a valve shaft in a driving mode, and the press sealing mechanism corresponds to a sealing ring of a sealing surface on the side of a valve plate ring.

Furthermore, the press sealing mechanism is arranged in the valve plate, and the press sealing mechanism is oppositely arranged on two sides of the valve plate respectively by the axis of the valve shaft; the press sealing mechanism comprises a push block, a long shaft extrusion module and a short shaft extrusion module; the pushing block is transversely arranged along a central channel of the valve plate, an oil supply pipe of the hydraulic device is communicated with the central channel and is connected with a hydraulic groove of the pushing block, and the hydraulic device acts on the hydraulic groove through the oil supply pipe to enable the pushing block to reciprocate along the central channel; the long shaft extrusion module is arranged in a first ejection channel close to one side of the valve shaft, and the ejection block corresponds to the long shaft extrusion module; the short shaft extrusion module is arranged in a second ejection channel on one side far away from the valve shaft, and the ejection block corresponds to the short shaft extrusion module.

Furthermore, a groove is formed in the position, corresponding to the long shaft extrusion module, of the push block, the long shaft extrusion module comprises a long shaft push block and a long shaft push block, the long shaft push block is arranged at the bottom end of the first push channel, and the long shaft push block is embedded into the groove in a non-extrusion state; the long shaft ejector block is arranged at the top end of the first ejection channel, and the long shaft ejector block are elastically connected through a spring; the long shaft top block is exposed out of the sealing surface on the side of the valve plate ring and corresponds to the sealing ring.

Furthermore, the ejector block is provided with an ejector head corresponding to the position of the short shaft extrusion module, the short shaft extrusion module comprises a short shaft ejector block and a short shaft ejector block, the short shaft ejector block is arranged at the bottom end of the second ejector channel, and the short shaft ejector block is in non-stressed contact with the ejector head in a non-extrusion state; the short shaft ejector block is arranged at the top end of the second ejection channel, and the short shaft ejector block are elastically connected through a spring; the short shaft top block is exposed out of the sealing surface on the side of the valve plate ring and corresponds to the sealing ring.

Has the advantages that: the hydraulic sealing type butterfly valve structure can effectively improve the sealing performance of the structure, and comprises the following technical effects:

1) the valve plate with the oval structure can effectively increase the outer edge stroke of the valve plate during rotary switching, can effectively increase the regulation range of flow rate, and enables the application range of the valve to be larger;

2) by setting the long shaft extrusion module and the short shaft extrusion module to have different action heights, the sealing ferrule can be stressed uniformly, and the sealing performance reduction caused by overlarge pressure of a partial area can be avoided.

Drawings

FIG. 1 is a block diagram of the present invention;

FIG. 2 is a cross-sectional view of the interior of the valve plate of the present invention.

Detailed Description

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

As shown in the attached figures 1-2: a hydraulic sealed butterfly valve structure comprises a valve shell 1, a valve shaft 2, a valve plate 3 and a hydraulic device 4; the valve shell 1 is of an elliptical structure in the cross section in the fluid flowing direction, a water outlet 11 and a water inlet 12 are arranged at two ends of the valve shell 1 in the fluid flowing direction, and shaft holes are arranged at the upper end and the lower end of the valve shell 1; the valve shaft 2 is inserted and installed in the valve shell 1 through a shaft hole; the sealing surface of the valve plate 3 at the ring side is correspondingly matched with the inner wall of the valve shell 1, and the valve shaft 2 is connected to the valve plate 3 in a penetrating way along the center position of the valve plate 3 in the height direction; the hydraulic device 4 is connected with a press sealing mechanism of the valve plate 3 through a valve shaft 2 in a driving way, and the press sealing mechanism corresponds to a sealing ring 5 of a sealing surface on the ring side of the valve plate 3; the valve plate 3 with the oval structure can effectively increase the outer edge stroke of the valve plate 3 during rotary switching, can effectively increase the regulation range of the flow rate, and enables the application range of the valve to be larger; when the valve is in a closed state, the hydraulic device 4 drives the press sealing mechanism to enable the sealing ring 5 to be tightly attached to the inner wall of the valve shell 1, and the sealing performance is further enhanced.

The press sealing mechanism is arranged in the valve plate 3, and the press sealing mechanism is arranged on two sides of the valve plate 3 in an opposite way by the axis of the valve shaft 2; the press sealing mechanism comprises a push block 21, a long shaft extrusion module and a short shaft extrusion module; the ejector block 21 is transversely arranged along the central channel 31 of the valve plate 3, an oil supply pipe 41 of the hydraulic device 4 is communicated with the central channel 31 and is connected with the hydraulic groove 211 of the ejector block 21, and the hydraulic device 4 can make the ejector block 21 reciprocate along the central channel 31 by acting on the hydraulic groove 211 through the oil supply pipe 41; the long shaft extrusion module is arranged in a first ejection channel 32 close to one side of the valve shaft 2, and the ejection block 21 corresponds to the long shaft extrusion module; the short shaft extrusion module is arranged in a second ejection channel 33 on one side far away from the valve shaft 2, and the ejection block 21 corresponds to the short shaft extrusion module; the hydraulic device 4 pumps hydraulic fluid into the hydraulic groove 211 through the oil supply pipe 41 to push the ejector block 21 to move along the central channel 31, the position of the groove 212 moves in the moving process, the chamfer structures on two sides of the groove 212 push the long shaft ejector block 221 out of the groove 212, the long shaft ejector block 221 enables the long shaft ejector block 222 to eject the sealing ring 5 through a spring, the pressure between the sealing ring 5 and the inner wall of the valve housing 1 is increased, the sealing performance is improved, the principle that the ejector block 21 acts on the short shaft extrusion module is the same as that of the long shaft extrusion module, the action heights of the long shaft extrusion module and the short shaft extrusion module are different, the sealing ring 5 can be stressed uniformly, and the situation that the sealing performance is reduced due to the fact that partial area pressure is too large is avoided.

The push block 21 is provided with a groove 212 corresponding to the long shaft extrusion module, the long shaft extrusion module comprises a long shaft push block 221 and a long shaft push block 222, the long shaft push block 221 is arranged at the bottom end of the first push channel 32, and the long shaft push block 221 is embedded into the groove 212 in a non-extrusion state; the long shaft pushing block 222 is arranged at the top end of the first pushing channel 32, and the long shaft pushing block 221 is elastically connected with the long shaft pushing block 222 through a spring; the long shaft top block 222 is exposed at the sealing surface of the valve plate 3 on the ring side and corresponds to the sealing collar 5.

The ejector block 21 is provided with an ejector 213 corresponding to the short-axis extrusion module, the short-axis extrusion module comprises a short-axis ejector block 231 and a short-axis ejector block 232, the short-axis ejector block 231 is arranged at the bottom end of the second ejection channel 33, and the short-axis ejector block 231 is in non-stressed contact with the ejector 213 in a non-extrusion state; the short shaft ejector block 232 is arranged at the top end of the second ejection channel 33, and the short shaft ejector block 232 is elastically connected with the short shaft ejector block 231 through a spring; the sealing surface of the stub shaft top block 232 on the ring side of the valve plate 3 is exposed and corresponds to the sealing collar 5.

The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the utility model and these are intended to be within the scope of the utility model.

Claims (4)

1. The utility model provides a butterfly valve structure of hydraulic pressure sealed which characterized in that: comprises a valve shell (1), a valve shaft (2), a valve plate (3) and a hydraulic device (4); the cross section of the valve shell (1) in the fluid flowing direction is of an elliptical structure, a water outlet (11) and a water inlet (12) are arranged at two ends of the valve shell (1) in the fluid flowing direction, and shaft holes are formed in the upper end and the lower end of the valve shell (1); the valve shaft (2) is inserted and installed in the valve shell (1) through a shaft hole; the sealing surface of the valve plate (3) at the ring side is correspondingly matched with the inner wall of the valve shell (1), and the valve shaft (2) is connected to the valve plate (3) in a penetrating manner along the center position of the valve plate (3) in the height direction; the hydraulic device (4) is connected with a press sealing mechanism of the valve plate (3) through the valve shaft (2) in a driving mode, and the press sealing mechanism corresponds to a sealing ring (5) of a sealing surface on the ring side of the valve plate (3).

2. A hydraulically sealed butterfly valve arrangement according to claim 1, characterized in that: the press sealing mechanism is arranged in the valve plate (3), and the press sealing mechanism is arranged on two sides of the valve plate (3) in an opposite way by the axis of the valve shaft (2); the press sealing mechanism comprises a push block (21), a long shaft extrusion module and a short shaft extrusion module; the ejection block (21) is transversely arranged along a central channel (31) of the valve plate (3), an oil supply pipe (41) of the hydraulic device (4) is communicated with the central channel (31) and is connected with a hydraulic groove (211) of the ejection block (21), and the hydraulic device (4) acts on the hydraulic groove (211) through the oil supply pipe (41) and can enable the ejection block (21) to reciprocate along the central channel (31); the long shaft extrusion module is arranged in a first ejection channel (32) close to one side of the valve shaft (2), and the ejection block (21) corresponds to the long shaft extrusion module; the short shaft extrusion module is arranged on a second ejection channel (33) on one side far away from the valve shaft (2), and the ejection block (21) corresponds to the short shaft extrusion module.

3. A hydraulically sealed butterfly valve arrangement according to claim 2, characterized in that: the long shaft extrusion module is characterized in that a groove (212) is formed in the position, corresponding to the long shaft extrusion module, of the ejection block (21), the long shaft extrusion module comprises a long shaft ejection block (221) and a long shaft ejection block (222), the long shaft ejection block (221) is arranged at the bottom end of the first ejection channel (32), and the long shaft ejection block (221) is embedded into the groove (212) in a non-extrusion state; the long shaft ejector block (222) is arranged at the top end of the first ejection channel (32), and the long shaft ejector block (221) is elastically connected with the long shaft ejector block (222) through a spring; the long shaft top block (222) is exposed out of the sealing surface of the valve plate (3) on the ring side and corresponds to the sealing ring (5).

4. A hydraulically sealed butterfly valve arrangement according to claim 2, characterized in that: the short shaft extrusion module comprises a short shaft pushing block (231) and a short shaft pushing block (232), the short shaft pushing block (21) is provided with a pushing head (213) corresponding to the position of the short shaft extrusion module, the short shaft pushing block (231) is arranged at the bottom end of the second ejection channel (33), and the short shaft pushing block (231) is in non-stressed contact with the pushing head (213) in a non-extrusion state; the short shaft ejector block (232) is arranged at the top end of the second ejection channel (33), and the short shaft ejector block (232) is elastically connected with the short shaft ejector block (231) through a spring; the short shaft top block (232) is exposed out of the sealing surface of the valve plate (3) on the ring side and corresponds to the sealing ferrule (5).

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