Quick opening and closing pneumatic drive butterfly valve

Abstract

The utility model provides a pneumatic drive butterfly valve capable of being opened and closed quickly. Relates to the technical field of pneumatic drive butterfly valves. The device comprises a butterfly valve, a driving device and a fixing mechanism, a rotating shaft is arranged on the butterfly valve, a fixing mechanism is arranged at one end of the rotating shaft, a transmission rod is arranged at the bottom of the driving device, and one end of the transmission rod is connected with the fixing mechanism; the fixing mechanism comprises a fixing base, elastic metal, a clamping block, a liquid storage pipe, a piston, a threaded rod and a rotating plate, one end of the rotating shaft is fixedly connected with the fixing base, one end of the transmission rod is connected with the fixing base in an inserted mode, an annular cavity is formed in the fixing base, the elastic metal is fixedly installed in the annular cavity, and the elastic metal is fixedly installed in the clamping block. And one side of the elastic metal is fixedly connected with a plurality of clamping blocks. The pneumatic drive butterfly valve capable of being opened and closed rapidly has the advantages that the drive device and the butterfly valve can be disassembled and assembled rapidly without the help of external tools through cooperation of all the components.

Description

Technical Field

[0001] This utility model relates to the field of pneumatically driven butterfly valve technology, and in particular to a fast-opening and closing pneumatically driven butterfly valve. Background Technology

[0002] Valves are a crucial component of pipeline control systems, used in various industries including petroleum, chemical, metallurgy, spraying, and electronics. With the increasing level of industrial automation, more and more factories are choosing pneumatic valves for various industrial automation control applications.

[0003] The drawback of existing technology is that the larger the diameter, the slower the cylinder's action. When the diameter reaches approximately DN500, the opening and closing speeds, even with a pipeline pressure of 1MPa, exceed 8 seconds. This is far from meeting the requirements of some control systems that need to cut off or discharge pipeline media within approximately 1 second in the event of a fault. To address this issue, application number 201820289318.X discloses a rapid-opening and closing pneumatic valve drive device, which includes a cylinder. A solenoid valve is mounted on the outside of the cylinder, and a left pipe and a right pipe are mounted on the outside of the solenoid valve. The left and right pipes are fixedly connected to the solenoid valve. A left pneumatic amplifier is installed on the outside of the pipe and is fixedly connected to the left pipe. A right pneumatic amplifier is installed on the outside of the right pipe and is fixedly connected to the right pipe. A left quick-exit valve is installed inside the cylinder and is fixedly connected to the cylinder. A right quick-exit valve is installed inside the cylinder and is fixedly connected to the cylinder. This device, through the combination of pneumatic amplifiers and quick-exit valves, enables a DN500 butterfly valve to be fully closed to fully open or fully open to fully closed within 1 second under a pressure of 1MPa, achieving rapid opening and closing function, which is much higher than the opening and closing speed of ordinary pneumatic butterfly valves of the same size (8 seconds or more).

[0004] However, a thorough reading of the aforementioned patent documents reveals the following shortcomings: During use, the valve and drive device require regular maintenance. Since one end of the pneumatic valve shaft is connected to the drive device via multiple fasteners, when maintaining the drive device or replacing the valve, operators need to use tools compatible with the fasteners to disassemble and reassemble them one by one. This process is cumbersome and time-consuming. Furthermore, if operators forget to bring the compatible tools, maintenance operations become inconvenient. There is room for improvement.

[0005] Therefore, this utility model provides a pneumatically driven butterfly valve for rapid opening and closing to solve the above problems. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides a fast-opening and closing pneumatically driven butterfly valve, comprising: a butterfly valve, a driving device, and a fixing mechanism;

[0007] The butterfly valve is provided with a rotating shaft, one end of which is provided with a fixing mechanism. The bottom of the drive device is provided with a transmission rod, one end of which is connected to the fixing mechanism.

[0008] The fixing mechanism includes a fixed base, an elastic metal, a locking block, a liquid storage tube, a piston, a threaded rod, and a rotating plate. One end of the rotating shaft is fixedly connected to the fixed base, and one end of the transmission rod is inserted into the fixed base. The fixed base has an annular cavity, and the elastic metal is fixedly installed inside the annular cavity. Multiple locking blocks are fixedly connected to one side of the elastic metal, and all of the locking blocks engage with the transmission rod. Through the cooperative design between the fixed base, the elastic metal, the locking block, the liquid storage tube, the threaded rod, the piston, the transmission rod, and the rotating shaft, the driving device and the butterfly valve can be quickly disassembled and assembled without the need for external tools, improving convenience and efficiency.

[0009] Preferably, the elastic metal abuts against the transmission rod, and the transmission rod has multiple slots. Multiple locking blocks are respectively engaged with the multiple slots. Through the cooperation between the multiple slots, the multiple locking blocks and the elastic metal, the transmission rod can be driven to the fixed seat and the rotating shaft.

[0010] Preferably, the fixed base has an installation groove, in which a liquid storage pipe is fixedly installed. Both the liquid storage pipe and the annular cavity are filled with hydraulic oil for storing hydraulic oil. The fixed base has a connecting groove, and the two ends of the connecting groove are respectively connected to the annular cavity and the liquid storage pipe to facilitate the flow of hydraulic oil between the annular cavity and the liquid storage pipe.

[0011] Preferably, a piston is slidably connected inside the liquid storage tube, and a threaded rod is rotatably connected to one side of the piston. The threaded rod is threadedly connected to the liquid storage tube. By rotating the threaded rod, the piston slides inside the liquid storage tube, thereby achieving the effect of the piston squeezing and extracting hydraulic oil.

[0012] Preferably, one end of the threaded rod passes through the liquid storage tube and is fixedly connected to a rotating plate, which facilitates the rotation of the threaded rod.

[0013] Preferably, a sealing ring is fixedly sleeved on the piston, and the sealing ring is slidably connected to the liquid storage tube to improve the sealing performance.

[0014] Preferably, a bearing is fixedly sleeved on one end of the threaded rod, and the outer wall of the bearing is fixedly connected to the piston to prevent the piston from rotating with the threaded rod and reduce the wear of the piston.

[0015] Compared with related technologies, the pneumatically driven butterfly valve for rapid opening and closing provided by this utility model has the following beneficial effects:

[0016] This utility model provides a quick-opening and closing pneumatically driven butterfly valve. Through the cooperative design between the fixed seat, elastic metal, locking block, liquid storage tube, threaded rod, piston, transmission rod and rotating shaft, the driving device and the butterfly valve can be quickly disassembled and assembled without the need for external tools, thus improving convenience and efficiency. Attached Figure Description

[0017] Figure 1 A three-dimensional structural diagram of a pneumatically driven butterfly valve for rapid opening and closing provided by this utility model;

[0018] Figure 2 An exploded view of the fixing mechanism of a fast-opening and closing pneumatically driven butterfly valve provided by this utility model;

[0019] Figure 3 A schematic diagram of the fixed seat for a fast-opening and closing pneumatically driven butterfly valve provided by this utility model;

[0020] Figure 4 This is a rear view structural diagram of a pneumatically driven butterfly valve for quick opening and closing provided by this utility model.

[0021] The following are the labels in the diagram: 1. Butterfly valve; 2. Rotary shaft; 3. Fixing mechanism; 4. Transmission rod; 5. Drive device; 6. Slot; 31. Fixing seat; 32. Annular cavity; 33. Elastic metal; 34. Locking block; 35. Liquid storage tube; 36. Piston; 37. Threaded rod; 38. Connecting groove; 39. Rotating plate. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Please refer to the following: Figures 1-4 A pneumatically driven butterfly valve for rapid opening and closing includes: a butterfly valve 1, a driving device 5, and a fixing mechanism 3. The driving device 5 includes a cylinder, etc. First, the solenoid valve pipeline is relatively thin and has a diameter of about 8 mm. Therefore, this device uses a right pneumatic amplifier and a left pneumatic amplifier. The pneumatic amplifier can convert a small output signal into a large air source for the actuator. When the solenoid valve is energized, the solenoid valve output signal is transmitted to the left pneumatic amplifier. At this time, the left chamber is filled with air, causing the turntable to rotate to the left. Since the turntable is fixedly connected to the rotating shaft, and the rotating shaft is fixedly connected to the valve, the valve opens accordingly. The specific structure and working principle of the driving device 5 can be found in the literature with application number: 201820289318.X. This is the prior art and will not be described in detail.

[0024] The butterfly valve 1 is provided with a rotating shaft 2, one end of which is provided with a fixing mechanism 3, and the bottom of the drive device 5 is provided with a transmission rod 4, one end of which is connected to the fixing mechanism 3;

[0025] The fixing mechanism 3 includes a fixing seat 31, an elastic metal 33, a locking block 34, a liquid storage tube 35, a piston 36, a threaded rod 37, and a rotating plate 39. One end of the rotating shaft 2 is fixedly connected to the fixing seat 31, and one end of the transmission rod 4 is inserted into the fixing seat 31. An annular cavity 32 is provided on the fixing seat 31, and an elastic metal 33 is fixedly installed in the annular cavity 32. Multiple locking blocks 34 are fixedly connected to one side of the elastic metal 33, and all the locking blocks 34 are engaged with the transmission rod 4. Through the cooperative design between the fixing seat 31, the elastic metal 33, the locking block 34, the liquid storage tube 35, the threaded rod 37, the piston 36, the transmission rod 4, and the rotating shaft 2, the effect of quick disassembly and assembly between the drive device 5 and the butterfly valve 1 can be achieved without the aid of external tools, thus improving convenience and efficiency.

[0026] In this method, the elastic metal 33 abuts against the transmission rod 4, and the transmission rod 4 is provided with multiple slots 6. Multiple locking blocks 34 are respectively engaged with the multiple slots 6. Through the cooperation between the multiple slots 6, the multiple locking blocks 34 and the elastic metal 33, it is convenient for the transmission rod 4 to transmit power to the fixed seat 31 and the rotating shaft 2.

[0027] In this method, the fixed base 31 is provided with an installation groove, and a liquid storage pipe 35 is fixedly installed in the installation groove. Both the liquid storage pipe 35 and the annular cavity 32 are provided with hydraulic oil for storing hydraulic oil. The fixed base 31 is provided with a connecting groove 38, and the two ends of the connecting groove 38 are respectively connected to the annular cavity 32 and the liquid storage pipe 35, so as to facilitate the flow of hydraulic oil between the annular cavity 32 and the liquid storage pipe 35.

[0028] In this method, a piston 36 is slidably connected inside the reservoir tube 35, and a threaded rod 37 is rotatably connected to one side of the piston 36. The threaded rod 37 is threadedly connected to the reservoir tube 35. By rotating the threaded rod 37, the piston 36 slides inside the reservoir tube 35, thereby achieving the effect of the piston 36 squeezing hydraulic oil and extracting hydraulic oil.

[0029] In this configuration, one end of the threaded rod 37 passes through the liquid storage tube 35 and is fixedly connected to a rotating plate 39, which facilitates the rotation of the threaded rod 37.

[0030] In this method, a sealing ring is fixedly sleeved on the piston 36, and the sealing ring is slidably connected to the liquid storage tube 35 to improve the sealing performance.

[0031] In this method, a bearing is fixedly sleeved on one end of the threaded rod 37, and the outer wall of the bearing is fixedly connected to the piston 36 to prevent the piston 36 from rotating with the threaded rod 37 and reduce the wear of the piston 36.

[0032] The working principle of the pneumatically driven butterfly valve for quick opening and closing provided by this utility model is as follows: When in use, the drive device 5 drives the rotating shaft 2 on the butterfly valve 1 to rotate quickly through the transmission rod 4 and the fixed mechanism 3, thereby achieving the effect of quick opening and closing of the butterfly valve 1.

[0033] When maintenance is required on the drive unit 5 or butterfly valve 1: First, rotate the rotating plate 39 to make the threaded rod 37 and the liquid storage tube 35 perform threaded transmission. At the same time, one end of the threaded rod 37 drives the piston 36 to slide in the liquid storage tube 35 through the transmission of the bearing. Meanwhile, the hydraulic oil in the annular cavity 32 is drawn into the liquid storage tube 35 through the action of the connecting groove 38, thereby reducing the pressure in the annular cavity 32. This causes the elastic metal 33 and multiple locking blocks 34 to release the restriction on the transmission rod 4. Then, the transmission rod 4 is pulled out from the fixed seat 31, thereby achieving the effect of quick disassembly between the drive unit 5 and the butterfly valve 1.

[0034] By reversing the operation and making the multiple slots 6 on the transmission rod 4 correspond to the multiple blocks 34 respectively, the effect of quickly assembling the drive device 5 and the butterfly valve 1 can be achieved.

[0035] Compared with related technologies, the pneumatically driven butterfly valve for quick opening and closing provided by this utility model has the following advantages: through the cooperation of various components, the effect of quick disassembly and assembly between the drive device 5 and the butterfly valve 1 can be achieved without the aid of external tools, and the structure is simple, which greatly improves practicality and convenience.

[0036] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. Quick open and close pneumatic drive butterfly valve (1) comprising butterfly valve (1), drive device (5) and fixing mechanism (3); The butterfly valve (1) is provided with a rotating shaft (2), one end of the rotating shaft (2) is provided with a fixing mechanism (3), the bottom of the drive device (5) is provided with a transmission rod (4), one end of the transmission rod (4) is connected with the fixing mechanism (3); The fixing mechanism (3) comprises a fixing seat (31), an elastic metal (33), a clamping block (34), a liquid storage pipe (35), a piston (36), a threaded rod (37) and a rotating plate (39), one end of the rotating shaft (2) is fixedly connected with the fixing seat (31), one end of the transmission rod (4) is inserted with the fixing seat (31), the fixing seat (31) is provided with an annular cavity (32), the annular cavity (32) is fixedly installed with the elastic metal (33), one side of the elastic metal (33) is fixedly connected with a plurality of clamping blocks (34), and the plurality of clamping blocks (34) are clamped with the transmission rod (4).

2. A quick open and close pneumatic actuated butterfly valve (1) as claimed in claim 1, wherein, The elastic metal (33) abuts against the transmission rod (4), the transmission rod (4) is provided with a plurality of clamping grooves (6), and the plurality of clamping grooves (6) are clamped with the plurality of clamping grooves (6).

3. The quick open-close pneumatic drive butterfly valve (1) according to claim 1, characterized in that, The fixing seat (31) is provided with a mounting groove, the mounting groove is fixedly installed with a liquid storage pipe (35), and the liquid storage pipe (35) and the annular cavity (32) are provided with hydraulic oil.

4. A quick open-close pneumatic actuated butterfly valve (1) according to claim 3, characterized in that, The fixing seat (31) is provided with a connecting groove (38), and the connecting groove (38) is communicated with the annular cavity (32) and the liquid storage pipe (35) respectively.

5. A quick open and close pneumatic actuated butterfly valve (1) according to claim 4, characterized in that, The piston (36) is slidably connected in the liquid storage pipe (35), one side of the piston (36) is rotatably connected with a threaded rod (37), and the threaded rod (37) is threadedly connected with the liquid storage pipe (35).

6. A quick open and close pneumatic actuated butterfly valve (1) according to claim 5, characterized in that, One end of the threaded rod (37) penetrates through the liquid storage pipe (35) and is fixedly connected with a rotating plate (39).

7. A quick open-close pneumatic actuated butterfly valve (1) according to claim 5, characterized in that, The piston (36) is fixedly sleeved with a sealing ring, and the sealing ring is slidably connected with the liquid storage pipe (35).

8. The quick open-close pneumatic drive butterfly valve (1) according to claim 5, characterized in that, One end of the threaded rod (37) is fixedly sleeved with a bearing, and the outer wall of the bearing is fixedly connected with the piston (36).

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