Butterfly valve with double actuating mechanisms

By setting oil cylinders and spring cylinders on both sides of the stem transmission assembly of the butterfly valve, the dual actuator design of the butterfly valve is achieved, solving the problem that the butterfly valve cannot be opened and closed due to the failure of a single actuator, and ensuring the normal operation of the valve.

CN222616020UActive Publication Date: 2025-03-14JIANGNAN VALVE
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Patent Information

Application Number
CN202421388957.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-18
Publication Date
2025-03-14
Estimated Expiration
2034-06-18

AI Technical Summary

Technical Problem

There is usually only one butterfly valve actuator. When the actuator fails, it is impossible to open and close the butterfly valve, which affects the normal operation of the butterfly valve.

Method used

A butterfly valve with a dual actuator is designed, and the valve is opened and closed by setting oil cylinders and spring cylinders on both sides of the valve stem transmission assembly, using the force of the spring in the spring cylinder to recharge the force of the oil cylinder. When the spring in the spring cylinder fails or fails, the valve can also be opened through the oil cylinder.

Benefits of technology

It ensures that when one actuator fails, the other actuator can drive the butterfly plate movement normally, ensuring that the valve can operate normally.

✦ Generated by Eureka AI based on patent content.

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    Figure CN222616020U_ABST
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Abstract

A butterfly valve with double actuating mechanisms comprises a valve body, a butterfly plate, a main valve rod and the actuating mechanisms, the main valve rod is arranged on the valve body, one end of the main valve rod extends into the valve body to be connected with the butterfly plate, and each actuating mechanism comprises an oil cylinder, a spring cylinder and a main valve rod transmission assembly. The end, extending out of the valve body, of the main valve rod is sleeved with the main valve rod transmission assembly, and the spring cylinder and the oil cylinder are arranged on the two sides of the main valve rod transmission assembly respectively, connected with the main valve rod transmission assembly and drive the main valve rod transmission assembly to rotate. The main valve rod transmission assembly drives the main valve rod to rotate in the rotating process to achieve opening and closing control over the butterfly plate. Specifically, in the design, the oil cylinder and the spring cylinder are arranged on the two sides of the valve rod transmission assembly respectively, the acting force of a spring in the spring cylinder is adopted to add the acting force of the oil cylinder to achieve opening and closing of the valve, when the spring in the spring cylinder loses efficacy or breaks down, the valve can be opened through the oil cylinder, and normal operation of the valve is guaranteed.
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Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a butterfly valve with double actuators. Background Art

[0002] The existing butterfly valve actuator usually has only one. When the actuator fails, the butterfly valve cannot be opened and closed, affecting the normal operation of the butterfly valve. Therefore, there is an urgent need for a butterfly valve with dual actuators to ensure that when one of the actuators fails, the other actuator can drive the butterfly plate to move normally. Summary of the invention

[0003] In view of this, the utility model provides a butterfly valve with double actuators.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A butterfly valve with a double actuator comprises a valve body, a butterfly plate, a main valve stem and an actuator, wherein the main valve stem is arranged on the valve body, one end of the main valve stem extends into the interior of the valve body and is connected to the butterfly plate, the actuator comprises an oil cylinder, a spring cylinder and a main valve stem transmission assembly, the main valve stem transmission assembly is sleeved on one end of the main valve stem extending out of the valve body, the spring cylinder and the oil cylinder are respectively arranged on both sides of the main valve stem transmission assembly, the spring cylinder and the oil cylinder are both connected to the main valve stem transmission assembly and drive the main valve stem transmission assembly to rotate, and the main valve stem is driven to rotate during the rotation of the main valve stem transmission assembly to realize the opening and closing control of the butterfly plate.

[0006] Preferably, the main valve stem transmission assembly includes a transmission box, a main valve stem connecting piece and a transmission piece, the transmission box is fixed to the top of the valve body, a transmission cavity is formed inside the transmission box, the top of the main valve stem passes through the bottom of the transmission box and extends into the transmission cavity, the main valve stem connecting piece is sleeved on the part of the main valve stem extending into the transmission cavity, one side of the main valve stem connecting piece extends to form a transmission part, a transmission groove is provided on the transmission part, the transmission piece is arranged in the transmission groove, and one end of the oil cylinder and the spring cylinder respectively extend into the transmission cavity from both sides of the transmission box to connect with the transmission piece.

[0007] Preferably, the transmission part includes an upper transmission part and a lower transmission part, and transmission grooves are provided on the upper transmission part and the lower transmission part. The top and bottom ends of the transmission member protrude to form transmission ends, and the transmission ends extend into corresponding transmission grooves to be connected with the transmission part. The transmission member moves driven by the oil cylinder and the spring cylinder, and the transmission end slides in the transmission groove during the movement of the transmission member.

[0008] Preferably, a guide hole is provided on the transmission member, a guide rod is provided in the transmission cavity, the guide rod is transversely arranged in the transmission cavity, both ends of the guide rod are connected to the inner wall of the transmission cavity, the transmission member is sleeved on the guide rod through the guide hole, and the guide rod guides and limits the movement of the transmission member.

[0009] Preferably, the transmission member includes a transmission rod and a connecting collar, the transmission ends are formed at the top and bottom of the transmission rod, the connecting collar is sleeved on the transmission rod between the upper transmission part and the lower transmission part, two transmission holes corresponding to the oil cylinder and the spring cylinder are arranged on the connecting collar, and the oil cylinder and the spring cylinder extend into the corresponding transmission holes to be connected to the transmission member.

[0010] Preferably, a plurality of fine-tuning holes and medium through holes are provided on the butterfly plate, a small butterfly plate is arranged in the medium through hole, a ring gap is provided between the small butterfly plate and the medium through hole, a small butterfly plate actuator is arranged at the bottom of the valve body, an auxiliary valve stem is arranged between the small butterfly plate actuator and the small butterfly plate, and the small butterfly plate is connected to the small butterfly plate actuator through the auxiliary valve stem.

[0011] Preferably, the fine-tuning through holes are symmetrically arranged on both sides of the butterfly plate with the axial direction of the main valve stem as the center line.

[0012] The beneficial effect of the utility model is that an oil cylinder and a spring cylinder are respectively arranged on both sides of the valve stem transmission assembly, and the action force of the spring in the spring cylinder is used to increase the action force of the oil cylinder to realize the opening and closing of the valve. When the spring in the spring cylinder fails or malfunctions, the valve can also be opened by the oil cylinder to ensure the normal operation of the valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Attached Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Attached Figure 2 It is a top view of the utility model;

[0016] Attached Figure 3 For attachment Figure 2 Sectional view at AA;

[0017] Attached Figure 4 For attachment Figure 2 Sectional view at the middle BB;

[0018] Attached Figure 5 For attachment Figure 3 Enlarged view of point C in the middle;

[0019] Attached Figure 6 The attached figure is a partial cross-sectional view of the utility model;

[0020] Attached Figure 7 For attachment Figure 6 Enlarged view of point D in the middle. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] The utility model will be further described below in conjunction with the accompanying drawings of the specification.

[0023] The utility model provides the following technical solutions:

[0024] As attached Figure 1-7 As shown, the utility model discloses a butterfly valve with double actuators, including a valve body 1, a butterfly plate 2, a main valve stem 3 and an actuator 4, wherein the main valve stem 3 is arranged on the valve body 1, one end of the main valve stem 3 extends into the valve body 1 and is connected to the butterfly plate 2, and the actuator 4 includes an oil cylinder 5, a spring cylinder 6 and a main valve stem transmission assembly 7, wherein the main valve stem transmission assembly 7 is sleeved on one end of the main valve stem 3 extending out of the valve body 1, and the spring cylinder 6 and the oil cylinder 5 are respectively arranged on both sides of the main valve stem transmission assembly 7, and the spring cylinder 6 and the oil cylinder 5 are both connected to the main valve stem transmission assembly 7 and drive the main valve stem transmission assembly 7 to rotate, and the main valve stem 3 is driven to rotate during the rotation of the main valve stem transmission assembly 7 to realize the opening and closing control of the butterfly plate 2. Specifically, in the present design, by respectively arranging the oil cylinder 5 and the spring cylinder 6 on both sides of the valve stem transmission assembly, the action force of the spring in the spring cylinder 6 is used to increase the action force of the oil cylinder 5 to realize the opening and closing of the valve, and when the spring in the spring cylinder 6 fails or fails, the valve can also be opened by the oil cylinder 5 to ensure that the valve can operate normally.

[0025] Further, the main valve stem transmission assembly 7 includes a transmission box 8, a main valve stem connector 9 and a transmission member 10. The transmission box 8 is fixed at the top of the valve body 1. A transmission chamber 11 is formed inside the transmission box 8. The top of the main valve stem 3 passes through the bottom of the transmission box 8 and extends into the transmission chamber 11. The main valve stem connector 9 is sleeved on the part of the main valve stem 3 extending into the transmission chamber 11. One side of the main valve stem connector 9 extends to form a transmission part 12. A transmission groove 13 is provided on the transmission part 12. The transmission member 10 is arranged in the transmission groove 13. One end of the oil cylinder 5 and the spring cylinder 6 extends into the transmission chamber 11 from both sides of the transmission box 8 to connect the transmission member 10. Specifically, in this embodiment, the design of the transmission box 8 enables the main valve stem transmission assembly 7 to be firmly fixed at the top of the valve body 1 and form a closed transmission chamber 11, which provides a guarantee for the smooth movement of the transmission member 10. The close fit between the main valve stem connector 9 and the main valve stem 3 enables the rotation of the main valve stem 3 to be accurately transmitted to the transmission part 12. The transmission groove 13 provided on the transmission part 12 provides a movement track for the transmission member 10, ensuring the stability and accuracy of the transmission. One end of the oil cylinder 5 and the spring cylinder 6 extends into the transmission cavity 11 through the two sides of the transmission box 8 to connect the transmission member 10. This design allows the force of the oil cylinder 5 and the spring cylinder 6 to act directly on the transmission member 10, thereby driving the transmission member 10 to move in the transmission groove 13, driving the main valve stem connector 9 and the main valve stem 3 to rotate, and finally realizing the opening and closing control of the butterfly plate 2. In actual operation, when the spring in the spring cylinder 6 fails or malfunctions, the oil cylinder 5 can still work independently, and the force of the oil cylinder 5 causes the transmission member 10 to move in the transmission groove 13, thereby driving the main valve stem 3 to rotate, so that the valve remains in an open state.

[0026] Further, the transmission part 12 includes an upper transmission part 14 and a lower transmission part 15, and the upper transmission part 14 and the lower transmission part 15 are both provided with a transmission groove 13, and the top and bottom ends of the transmission member 10 are both protruded to form a transmission end 16, and the transmission end 16 extends into the corresponding transmission groove 13 to connect with the transmission part 12, and the transmission member 10 moves under the drive of the oil cylinder 5 and the spring cylinder 6, and the transmission end 16 slides in the transmission groove 13 during the movement of the transmission member 10. Specifically, in this embodiment, the design of the transmission part 12 is divided into an upper transmission part 14 and a lower transmission part 15, and the transmission groove 13 is provided in both parts, so that the transmission member 10 can be connected to the upper transmission part 14 and the lower transmission part 15 respectively through the transmission end 16 at the top and the transmission end 16 at the bottom. This design makes the movement of the transmission member 10 more stable, reduces the friction and resistance during the transmission process, and improves the efficiency of the transmission. At the same time, the transmission member 10 moves driven by the oil cylinder 5 and the spring cylinder 6, and the transmission end 16 slides in the transmission groove 13. This movement mode enables the transmission member 10 to accurately transmit the force of the oil cylinder 5 and the spring cylinder 6, thereby achieving precise control of the butterfly plate 2.

[0027] Furthermore, a guide hole 17 is provided on the transmission member 10, and a guide rod 18 is provided in the transmission cavity 11. The guide rod 18 is transversely arranged in the transmission cavity 11, and the two ends of the guide rod 18 are connected to the inner wall of the transmission cavity 11. The transmission member 10 is sleeved on the guide rod 18 through the guide hole 17, and the guide rod 18 guides and limits the movement of the transmission member 10. Specifically, in this embodiment, the design of the guide hole 17 and the guide rod 18 further enhances the stability and accuracy of the transmission member 10. The guide rod 18 is transversely arranged in the transmission cavity 11, and the two ends are connected to the inner wall of the transmission cavity 11, forming a stable guide structure. The guide hole 17 on the transmission member 10 cooperates with the guide rod 18, so that the transmission member 10 can move along the direction of the guide rod 18 during the movement process, thereby avoiding the possible deviation or shaking of the transmission member 10 during the transmission process.

[0028] Further, the transmission member 10 includes a transmission rod 19 and a connecting collar 20, the transmission end 16 is formed at the top and bottom of the transmission rod 19, the connecting collar 20 is sleeved at the position of the transmission rod 19 between the upper transmission part 14 and the lower transmission part 15, and two transmission holes 21 corresponding to the oil cylinder 5 and the spring cylinder 6 are arranged on the connecting collar 20, and the oil cylinder 5 and the spring cylinder 6 extend into the corresponding transmission holes 21 and are connected to the transmission member 10. Specifically, in this embodiment, the design of the transmission member 10 is further refined, including two parts: the transmission rod 19 and the connecting collar 20. The transmission end 16 is formed at the top and bottom of the transmission rod 19, and is connected to the upper transmission part 14 and the lower transmission part 15 respectively, so as to realize the effective transmission of the transmission force. The connecting collar 20 is sleeved at the position of the transmission rod 19 between the upper transmission part 14 and the lower transmission part 15, and plays the role of fixing and supporting the transmission rod 19. Two transmission holes 21 are provided on the connecting ring 20, corresponding to the oil cylinder 5 and the spring cylinder 6 respectively, so that the oil cylinder 5 and the spring cylinder 6 can be directly connected to the transmission member 10, thereby driving the transmission member 10 to move in the transmission groove 13, thereby realizing the opening and closing control of the butterfly plate 2.

[0029] Furthermore, a plurality of fine-tuning holes 22 and medium through holes 23 are provided on the butterfly plate 2, a small butterfly plate 24 is provided in the medium through hole 23, a ring gap 25 is provided between the small butterfly plate 24 and the medium through hole 23, a small butterfly plate actuator 26 is provided at the bottom of the valve body 1, an auxiliary valve stem 27 is provided between the small butterfly plate actuator 26 and the small butterfly plate 24, and the small butterfly plate 24 is connected to the small butterfly plate actuator 26 through the auxiliary valve stem 27.

[0030] Furthermore, the fine-tuning through hole 22 is symmetrically arranged on both sides of the butterfly plate 2 with the axial direction of the main valve stem 3 as the center line.

[0031] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A butterfly valve with dual actuators, comprising a valve body, a butterfly plate, a main valve stem and an actuator, wherein the main valve stem is arranged on the valve body, one end of the main valve stem extends into the valve body and is connected to the butterfly plate, characterized in that: The actuator includes an oil cylinder, a spring cylinder and a main valve stem transmission assembly. The main valve stem transmission assembly is sleeved on one end of the main valve stem extending out of the valve body. The spring cylinder and the oil cylinder are respectively arranged on both sides of the main valve stem transmission assembly. The spring cylinder and the oil cylinder are both connected to the main valve stem transmission assembly and drive the main valve stem transmission assembly to rotate. During the rotation of the main valve stem transmission assembly, the main valve stem is driven to rotate to realize the opening and closing control of the butterfly plate.

2. The butterfly valve with dual actuators according to claim 1, characterized in that: The main valve stem transmission assembly includes a transmission box, a main valve stem connecting piece and a transmission piece. The transmission box is fixed at the top of the valve body. A transmission cavity is formed inside the transmission box. The top of the main valve stem passes through the bottom of the transmission box and extends into the transmission cavity. The main valve stem connecting piece is sleeved on the part of the main valve stem extending into the transmission cavity. One side of the main valve stem connecting piece extends to form a transmission part. A transmission groove is provided on the transmission part. The transmission piece is arranged in the transmission groove. One end of the oil cylinder and the spring cylinder respectively extend into the transmission cavity from both sides of the transmission box to connect with the transmission piece.

3. The butterfly valve with dual actuators according to claim 2, characterized in that: The transmission part includes an upper transmission part and a lower transmission part, and transmission grooves are provided on the upper transmission part and the lower transmission part. The top and bottom ends of the transmission member protrude to form transmission ends, and the transmission ends extend into the corresponding transmission grooves to be connected with the transmission part. The transmission member moves under the drive of the oil cylinder and the spring cylinder, and the transmission end slides in the transmission groove during the movement of the transmission member.

4. The butterfly valve with dual actuators according to claim 2, characterized in that: A guide hole is provided on the transmission member, a guide rod is arranged in the transmission cavity, the guide rod is arranged horizontally in the transmission cavity, both ends of the guide rod are connected to the inner wall of the transmission cavity, the transmission member is sleeved on the guide rod through the guide hole, and the guide rod guides and limits the movement of the transmission member.

5. The butterfly valve with dual actuators according to claim 3, characterized in that: The transmission member includes a transmission rod and a connecting collar, the transmission ends are formed at the top and bottom of the transmission rod, the connecting collar is sleeved on the transmission rod between the upper transmission part and the lower transmission part, two transmission holes corresponding to the oil cylinder and the spring cylinder are arranged on the connecting collar, and the oil cylinder and the spring cylinder extend into the corresponding transmission holes to be connected with the transmission member.

6. The butterfly valve with dual actuators according to claim 1, characterized in that: A plurality of fine-tuning holes and medium through holes are provided on the butterfly plate, a small butterfly plate is arranged in the medium through hole, a ring gap is provided between the small butterfly plate and the medium through hole, a small butterfly plate actuator is arranged at the bottom of the valve body, an auxiliary valve stem is arranged between the small butterfly plate actuator and the small butterfly plate, and the small butterfly plate is connected to the small butterfly plate actuator through the auxiliary valve stem.

7. The butterfly valve with dual actuators according to claim 6, characterized in that: The fine-tuning through holes are symmetrically arranged on both sides of the butterfly plate with the axial direction of the main valve stem as the center line.