Air-operated double-position butterfly valve with flow regulation possible
The air-operated double-position butterfly valve with a safety lock assembly addresses the issue of fluid penetration during power failures or actuator disconnection by locking the valve stem and worm wheel, thereby enhancing safety and controllability.
Patent Information
- Application Number
- JP2025001231U
- Authority / Receiving Office
- JP · JP
- Patent Type
- Utility models
- Current Assignee / Owner
- Filing Date
- 2025-04-21
- Publication Date
- 2025-06-19
- Estimated Expiration
- 2035-04-21
AI Technical Summary
Conventional air-operated butterfly valves are prone to fluid penetration during power failures or actuator disconnection, leading to accidents due to ineffective braking.
An air-operated double-position butterfly valve with a safety lock assembly that includes a mounting frame, worm wheel, worm, limit cylinder, lock groove, and a handle-operated lock block, which locks the valve stem and worm wheel to prevent unintended rotation.
The safety lock assembly enhances the safety and controllability of the butterfly valve, preventing fluid penetration and reducing the risk of the valve becoming uncontrollable during disconnection or failure scenarios.
Smart Images
Figure 0003251701000001_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of butterfly valves, and specifically, to an air-operated double-position butterfly valve with adjustable flow rate.
Background Art
[0002] An air-operated butterfly valve is composed of an air-operated actuator and a butterfly valve. The air-operated butterfly valve has an opening and closing function with a circular butterfly plate that rotates together with the valve stem, and is an air-operated valve that enables operation. The air-operated actuator is an execution device that opens, closes, or adjusts the valve with air pressure.
[0003] Most of the conventional actuators of air-operated butterfly valves drive the opening and closing of the butterfly valve only with air pressure, and have the effect of adjusting the opening and closing property of the valve and the brake valve so that the fluid does not penetrate the valve. However, in the case of power failure, stop, no output from the controller, or when the actuator fails, the valve loses its connection with the actuator and the brake becomes ineffective, and the fluid often penetrates the valve, causing accidents. Therefore, those skilled in the art have provided an air-operated double-position butterfly valve with adjustable flow rate to solve the problems raised in the above background art.
Summary of the Invention
Problems to be Solved by the Invention
[0004] In view of the problems of the above-mentioned prior art, the present invention provides an air-operated double-position butterfly valve with adjustable flow rate to solve the problems that the current air-operated butterfly valve relying on energized air may cause accidents when there is a power failure, stop, no output from the controller, or when the connection with the actuator is disconnected and the brake becomes ineffective, and the fluid penetrates.
Means for Solving the Problems
[0005] To achieve the above object, the present invention presents the following technical means. An air-operated double-position butterfly valve with adjustable flow rate, including a butterfly valve body and a safety lock assembly, wherein the safety lock assembly is installed above the butterfly valve body, a valve spool is installed inside the butterfly valve body, the top of the valve spool is fixedly connected to a valve stem, a worm wheel is fixedly connected to the end of the valve stem, one end of the worm wheel is fixedly connected to a drive shaft, the drive shaft is installed at the bottom of the air-operated valve, the safety lock assembly includes a mounting frame, the top of the mounting frame is fixedly connected to the air-operated valve, the bottom of the mounting frame is fixedly connected to the butterfly valve body, a worm wheel and a worm are installed in the mounting frame, the end of the worm is fixedly connected to a limit cylinder, a lock groove is opened inside the limit cylinder, a receiving groove is opened on one side of the lock groove, a fixed shaft is installed inside the receiving groove, the fixed shaft penetrates one end of the mounting frame and is fixedly connected to a handle.
[0006] Preferably, the air-operated valve drives the valve spool to be turned on and off by the drive shaft and the valve stem, and the drive shaft drives the limit cylinder to rotate by the worm wheel and the worm.
[0007] Preferably, a lock block is fixedly connected to the end of the fixed shaft, the lock block is adapted to the dimensions of the lock groove, and the lock block is inserted into the inside of the lock groove by lateral movement.
[0008] Preferably, the axial cross sections are all set to be square, the dimensions of the fixed shaft and the receiving groove are adapted, the fixed shaft is movably installed inside the receiving groove, and the axial cross sections of the fixed shaft and the receiving groove are both circularly installed.
[0009] Preferably, the guide blocks are set in two groups and fixedly connected to the upper and lower sides of the fixed shaft respectively. The cross-sections of the fixed shaft and the guide blocks are both installed in a dovetail shape, and the worm, limit cylinder, lock block and fixed shaft are installed horizontally.
[0010] Preferably, a guide rail is installed inside the port of the mounting frame. The guide rail conforms to the size of the guide block, and the guide block is slidably installed inside the guide rail.
Advantages of the Invention
[0011] Compared with the prior art, the present utility model provides an air-operated double-position butterfly valve with adjustable flow rate, and has the following beneficial effects.
[0012] Through the design, the handle is driven to insert the lock block into the lock groove with the fixed shaft, the lock block is locked and operated, and at the same time the worm wheel is also locked. At this time, the valve stem cannot drive the valve spool to rotate. By adding this safety lock assembly, the safety and practicability of the butterfly valve body during use are improved, and by improving the safety and controllability of the butterfly valve body, the fluid penetration accident caused by the disconnection of the connection between the valve and the actuator and the failure of the brake is avoided, and the risk of the butterfly valve body becoming uncontrollable is reduced.
Brief Description of the Drawings
[0013]
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Mode for Carrying Out the Invention
[0014] Hereinafter, with reference to the drawings of the embodiments of the present invention, the technical means in the embodiments of the present invention will be clearly and completely described. However, it is obvious that the described embodiments are some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained on the premise that those skilled in the art do not perform creative labor belong to the protection scope of the present invention.
[0015] The present invention provides an air-operated double-position butterfly valve with adjustable flow rate. Referring to FIGS. 1 to 7, it includes a butterfly valve body 3 and a safety lock assembly 6. The safety lock assembly 6 is installed above the butterfly valve body 3. A valve spool 5 is installed inside the butterfly valve body 3. The top of the valve spool 5 is fixedly connected to a valve stem 4. One end of the valve stem 4 is fixedly connected to a worm wheel 61. One end of the worm wheel 61 is fixedly connected to a drive shaft 2. The drive shaft 2 is installed at the bottom of the air-operated valve 1. The safety lock assembly 6 includes a mounting frame 60. The top of the mounting frame 60 is fixedly connected to the air-operated valve 1. The bottom of the mounting frame 60 is fixedly connected to the butterfly valve body 3. A worm wheel 61 and a worm 62 are installed on the mounting frame 60. One end of the worm 62 is fixedly connected to a limit cylinder 63. A lock groove 64 is opened inside the limit cylinder 63. A receiving groove 65 is opened on one side of the lock groove 64. A fixed shaft 67 is installed inside the receiving groove 65. The fixed shaft 67 penetrates one end of the mounting frame 60 and is fixedly connected to a handle 68.
[0016] Referring to FIGS. 1 to 7, the air-operated valve 1 is driven by a drive shaft 2 and a valve stem 4 to turn on and off a valve spool 5. The drive shaft 2 is driven by a worm wheel 61 and a worm 62 to rotate a limit cylinder 63. A lock block 66 is fixedly connected to the end of the fixed shaft 67, and the lock block 66 is adapted to the size of the lock groove 64. The lock block 66 is inserted into the lock groove 64 so as to be laterally movable. The axial cross-sections of both the lock block 66 and the lock groove 64 are square. The fixed shaft 67 is adapted to the size of the receiving groove 65, and the fixed shaft 67 and the receiving groove 65 are movably fitted. The axial cross-sections of both the fixed shaft 67 and the receiving groove 65 are circular. Guide blocks 69 are fixedly attached to the upper and lower ends of the fixed shaft 67. The cross-sections of both the fixed shaft 67 and the guide blocks 69 are dovetail-shaped. The worm 62, the limit cylinder 63, the lock block 66 and the fixed shaft 67 are horizontally installed. Guide rails 70 are installed inside the ports of the mounting frame 60. The guide rails 70 are adapted to the size of the guide blocks 69, and the guide blocks 69 are sleeved on the guide rails 70 so as to be slidable.
[0017] The present invention includes a butterfly valve body 3. A valve spool 5 is movably attached inside the butterfly valve body 3. The top of the valve spool 5 is fixedly connected to a valve stem 4. At the same time, the end of the valve stem 4 is fixedly connected to a worm wheel 61. The rotation axis of the worm wheel 61 is fixed to a drive shaft 2, and the drive shaft 2 is provided at the bottom of the air-operated valve 1. The safety lock assembly 6 includes a mounting frame 60. The top of the mounting frame 60 is fixedly connected to the air-operated valve 1. At the same time, the bottom of the mounting frame 60 is connected and fixed to the butterfly valve body 3 by screws. A worm wheel 61 and a worm 62 are respectively movably attached inside the mounting frame 60. The rotation axis of the end of the worm 62 is fixed to a limit cylinder 63. A lock groove 64 and a receiving groove 65 are respectively opened inside the limit cylinder 63. At the same time, a fixed shaft 67 is attached inside the receiving groove 65. The end of the fixed shaft 67 is fixed to a handle 68 through the side wall of the mounting frame 60.
[0018] When using the butterfly valve body 3, push the handle 68 inward, drive the handle 68 to insert the lock block 66 into the lock groove 64 through the fixed shaft 67, lock and operate the lock block 66. At this time, the worm wheel 61 is also locked. However, since the valve stem 4 at this time cannot rotate the valve spool 5, by adding this safety lock assembly 6, the safety during the use of the butterfly valve body 3 is improved, the practicality is high, the safety and controllability of the butterfly valve body 3 are enhanced, and the risk of the butterfly valve body 3 becoming uncontrollable is reduced.
[0019] As a preferred embodiment, the air-operated valve 1 drives the switch with the drive shaft 2 and the valve stem 4, and the drive shaft 2 drives the rotation of the limit cylinder 63 through the worm wheel 61 and the worm 62.
[0020] As shown in FIGS. 1 to 4, the drive shaft 2 drives the rotation of the limit cylinder 63 by the worm wheel 61 and the worm 62. The worm wheel 61 meshes and is connected with the worm 62 so that the worm wheel 61 and the worm 62 drive the limit cylinder 63 to rotate. At this time, the lock groove 64 and the lock block 66 are in a disengaged state, and there is no movement interference while the worm wheel 61 and the worm 62 are rotating.
[0021] As a preferred embodiment, the end of the fixed shaft 67 is fixed to the lock block 66. The lock block 66 is adapted to the size of the lock groove 64, and the lock block 66 moves laterally and is inserted into the lock groove 64.
[0022] As shown in FIGS. 1 to 2, when the lock block 66 moves horizontally and is inserted into the lock groove 64, at this time, the worm wheel 61 and the worm 62 are locked, and at the same time, the valve stem 4 and the valve spool 5 are also locked, reducing the risk of the butterfly valve body 3 becoming uncontrollable.
[0023] As a preferred embodiment, the axial cross-sections of both the lock block 66 and the lock groove 64 are square, and the fixed shaft 67 is adapted to the size of the receiving groove 65. At the same time, the fixed shaft 67 is movably installed inside the receiving groove 65, and the axial cross-sections of both the fixed shaft 67 and the receiving groove 65 are circularly installed.
[0024] As shown in FIGS. 1 to 7, the axial cross-sections of both the fixed shaft 67 and the receiving groove 65 are circular. When the lock groove 64 and the lock block 66 are in a separated state, the limit cylinder 63 rotates without causing movement interference with the fixed shaft 67.
[0025] As a preferred embodiment, a guide rail 70 is installed inside the port of the mounting frame 60, and the guide rail 70 is adapted to the size of the guide block 69. The guide block 69 is slidably installed inside the guide rail 70.
[0026] As a preferred embodiment, the guide block 69 is set in two groups and fixedly connected to the upper and lower sides of the fixed shaft 67 respectively. The cross-sections of both the fixed shaft 67 and the guide block 69 are dovetail-shaped, and the worm 62, the limit cylinder 63, the lock block 66 and the fixed shaft 67 are horizontally installed.
[0027] When the fixed shaft 67 moves horizontally, the guide block 69 thereon is slidably installed inside the guide rail 70, and the fixed shaft 67 during horizontal movement can be position-regulated and guided. The guide block 69 and the guide rail 70 are installed to avoid the rotation of the fixed shaft 67.
[0028] Note that in this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of such an actual relationship or order between these entities or operations. Further, "comprising", "comprised of", or any other variation thereof means non-exclusive inclusion. Thus, a process, method, article, or facility that comprises a series of elements includes not only those elements but also other elements not expressly listed or elements specific to such a process, method, article, or facility.
[0029] Here, terms such as "attachment", "installation", "connection", "fixation", "screw engagement", etc. should be understood broadly unless otherwise expressly specified or limited. For example, it may be a fixed connection, a detachable connection, or an integrated one. It can be mechanically connected or electrically connected, either directly connected or indirectly connected via an intermediate medium, or it may be an internal communication between two elements or an interaction relationship between two elements. Unless otherwise expressly limited, the specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the situation.
[0030] As described above, the embodiments of the present invention have been shown and described. It will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to the embodiments of the present invention without departing from the principle and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Explanation of Reference Numerals
[0031] 1 Air-operated valve 2 Drive shaft 3 Butterfly valve body 4 Valve stem 5 Valve spool 6 Safety lock assembly 60 Mounting frame 61 Worm wheel 62 worm 63 limit cylinder 64 locking groove 65 receiving groove 66 locking block 67 fixed shaft 68 handle 69 guide block 70 guide rail
Claims
1. A flow-adjustable air-operated double-position butterfly valve, comprising: a butterfly valve body (3) and a safety lock assembly (6), the safety lock assembly (6) being installed on the top of the butterfly valve body (3); a valve spool (5) being installed inside the butterfly valve body (3); a top of the valve spool (5) being fixedly connected to a valve stem (4); a worm wheel (61) being fixedly connected to an end of the valve stem (4); one end of the worm wheel (61) being fixedly connected to a drive shaft (2), the drive shaft (2) being installed at the bottom of the air-operated valve (1); the safety lock assembly (6) includes a mounting frame (60), a top of the mounting frame (60) is fixedly connected to the air operated valve (1), and a bottom of the mounting frame (60) is fixedly connected to the butterfly valve body (3); a worm wheel (61) and a worm (62) are installed on the mounting frame (60), an end of the worm (62) is fixedly connected to a limit cylinder (63), a lock groove (64) is formed inside the limit cylinder (63), a receiving tank (65) is formed on one side of the lock groove (64), a fixed shaft (67) is installed inside the receiving tank (65), the fixed shaft (67) passes through one end of the mounting frame (60) and is fixedly connected to a handle (68).
2. 2. The flow rate adjustable air operated double position butterfly valve according to claim 1, characterized in that the air operated valve (1) drives a valve spool (5) to turn on and off by the drive shaft (2) and the valve stem (4), and the drive shaft (2) drives a limit cylinder (63) to rotate by a worm wheel (61) and a worm (62).
3. 2. The flow-adjustable air operated double position butterfly valve according to claim 1, wherein a lock block (66) is fixedly connected to an end of the fixed shaft (67), the lock block (66) is adapted to a dimension of the lock groove (64), and the lock block (66) is inserted into the inside of the lock groove (64) by a lateral movement.
4. 4. The adjustable air operated double position butterfly valve according to claim 3, wherein the axial cross sections of the lock block (66) and the lock groove (64) are both set to a square, the dimensions of the fixed shaft (67) and the accommodating tank (65) are matched, the fixed shaft (67) is movably inserted into the accommodating tank (65), and the axial cross sections of the fixed shaft (67) and the accommodating tank (65) are both set to a circle.
5. 4. The flow adjustable air operated double position butterfly valve as claimed in claim 3, characterized in that guide blocks (69) are fixedly attached to the upper and lower ends of the fixed shaft (67), the cross sections of the fixed shaft (67) and the guide block (69) are all swallowtail-shaped, and the worm (62), limit cylinder (63), lock block (66) and fixed shaft (67) are installed horizontally.
6. 6. The adjustable air operated double position butterfly valve according to claim 5, characterized in that a guide rail (70) is installed inside the port of the mounting frame (60), the guide rail (70) is adapted to a size of the guide block (69), and the guide block (69) is slidably sleeved onto the guide rail (70).