Pneumatic ball valve

Abstract

The utility model relates to a kind of pneumatic ball valves in fluid sensor technical field, including ball valve main body, pneumatic actuator and valve stem, the top of ball valve main body is pedestal, the rotatable first of valve stem is set in the center of pedestal, the bottom of pneumatic actuator is equipped with the support connected with pedestal, the corner of support bottom is equipped with several rotatable locking pieces, the middle part of locking piece is equipped with limit key, limit key can rotate along the axis of locking piece, the middle part of pedestal is equipped with sliding slot and extends to one side, the end of sliding slot is equipped with the buckle groove matched with limit key, the structure that buckle groove and sliding slot keep perpendicular, locking piece can be located in sliding slot and slide, limit key and corresponding buckle groove form horizontal limit structure, improve the assembly efficiency between pneumatic actuator and ball valve main body, simultaneously when overhauling, pneumatic actuator can be individually overhauled and quickly disassembled, without removing pneumatic ball as a whole, maintain the integrity of pipeline system.

Description

Technical Field

[0001] This utility model relates to the field of fluid sensor technology, and in particular to a pneumatic ball valve. Background Technology

[0002] A pneumatic ball valve is a ball valve equipped with a pneumatic actuator. Pneumatic actuators operate relatively quickly, with the fastest switching speed being 0.05 seconds per cycle; therefore, they are often also called pneumatic quick-shutdown ball valves.

[0003] The existing Chinese utility model patent with publication number CN223359969U discloses a low-noise pneumatic ball valve, including a valve body, a pneumatic mechanism, a pipe body, a motor, a threaded rod, and a cleaning component. The pneumatic mechanism is fixedly installed at the upper end of the valve body, a pipe body is fixedly installed on one side of the valve body, a motor is fixedly installed on one end surface of the pipe body, a threaded rod is fixedly installed at the output end of the motor, and a cleaning component is movably installed inside the pipe body. This utility model describes a low-noise pneumatic ball valve where, through the interaction of the valve body, pipe body, motor, cleaning component, and threaded rod, when the pneumatic ball valve is in the closed state, the ball core of the ball valve is connected to the second connector. When the motor is started by an external device, the motor controls the threaded rod to rotate forward and backward. The rotating threaded rod causes the cleaning component to reciprocate. During this movement, the cleaning component's scraping ring scrapes the opening of the ball core, thus eliminating the need to disassemble the pneumatic ball valve to clean the ball core.

[0004] However, existing pneumatic ball valves are all fixed to the pneumatic actuator via a threaded connection to a top support, which is time-consuming to assemble. Furthermore, maintenance of the pneumatic actuator requires the complete disassembly and replacement of the pneumatic ball valve, which can damage the pipeline structure. Therefore, there is an urgent need to develop a new type of pneumatic ball valve to meet practical application requirements. Utility Model Content

[0005] The purpose of this invention is to provide a pneumatic ball valve to solve the above-mentioned defects.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A pneumatic ball valve includes a ball valve body, a pneumatic actuator, and a valve stem. One end of the valve stem extends into the interior of the ball valve body to drive the valve core to rotate. The other end of the valve stem is connected to the pneumatic actuator. The top of the ball valve body is a support. A rotatable part of the valve stem is located at the center of the support. The bottom of the pneumatic actuator is provided with a bracket connected to the support. Several rotatable locking elements are provided at the corners of the bottom of the bracket. A limit key is provided in the middle of the locking element. The limit key can rotate along the axis of the locking element. A sliding groove is opened in the middle of the support and extends to one side. The end of the sliding groove is provided with a retaining groove that matches the limit key. The retaining groove and the sliding groove are perpendicular to each other. The locking element can slide in the sliding groove. The limit key and the corresponding retaining groove form a horizontal limiting structure.

[0008] As a further embodiment of the above description, the locking component is provided with a knob at the top, which is rotatably mounted at the corner of the bracket via an elastic element. The locking component is provided with a horizontally positioned limiting plate at the bottom, and the support and bracket form a vertical limiting structure through the knob and the limiting plate.

[0009] As a further solution described above, the limit key is a semi-circular structure, with the center of the limit key coinciding with the axis of the locking component, and the locking groove matching the limit key.

[0010] As a further embodiment of the above description, the bottom of the pneumatic actuator is a rotatable drive shaft, and the side wall of the drive shaft is provided with a slot. The slot is a plate-like structure, and the top of the valve stem is an insert-like structure that matches the slot. The top of the valve stem can be located on one side of the slot and embedded inside the drive shaft.

[0011] As a further embodiment of the above description, the ball valve body includes a valve body and mounting flanges at both ends. Several mounting holes are provided at both ends of the valve body, and the mounting flanges are connected and fixed to the mounting holes at the ends of the valve body by fixing bolts.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: A groove extending to one side is provided at the top of the ball valve body, and the locking member at the bottom of the pneumatic actuator can slide inward at the opening of the groove. When the drive shaft of the pneumatic actuator is connected to the valve stem, the rotatable locking member forms a horizontal limiting structure with the limiting key and the corresponding locking groove. This assembly structure allows for quick assembly and disassembly, improving the assembly efficiency between the pneumatic actuator and the ball valve body. Furthermore, during maintenance, the pneumatic actuator can be quickly disassembled and repaired separately without disassembling the entire ball valve, thus maintaining the integrity of the pipeline system. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of a pneumatic ball valve described in this embodiment;

[0014] Figure 2This is a schematic diagram of the pneumatic actuator described in this embodiment;

[0015] Figure 3 This is a schematic diagram of the structure of the ball valve body described in this embodiment;

[0016] Figure 4 for Figure 2 A magnified schematic diagram of the structure of part A in the diagram;

[0017] Figure 5 for Figure 3 A magnified schematic diagram of the partial structure of B in the diagram;

[0018] Figure 6 This is a top view of the main body of the ball valve described in this embodiment;

[0019] In the diagram: 1-ball valve body, 11-support, 12-slide groove, 13-slot, 14-valve stem, 2-pneumatic actuator, 21-drive shaft, 22-slot, 3-bracket, 4-locking element, 41-knob, 43-limit key, 44-limit plate, 5-mounting flange, 51-mounting hole, 6-fixing bolt. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0021] For this embodiment, please refer to Figures 1-4 The specific implementation of the pneumatic ball valve includes a ball valve body 1, a pneumatic actuator 2, and a valve stem 14. One end of the valve stem 14 extends into the interior of the ball valve body 1 to drive the valve core to rotate, and the other end of the valve stem 14 is connected to the pneumatic actuator 2. The ball valve body 1 includes a valve body and mounting flanges 5 at both ends. Several mounting holes 51 are provided at both ends of the valve body. The mounting flanges 5 are connected and fixed to the mounting holes 51 at the ends of the valve body by fixing bolts 6.

[0022] The top of the ball valve body 1 is a support 11. The valve stem 14 is rotatably mounted at the center of the support 11. The bottom of the pneumatic actuator 2 is provided with a bracket 3 connected to the support 11. Several rotatable locking parts 4 are provided at the corners of the bottom of the bracket 3. A limit key 43 is provided in the middle of the locking part 4. The limit key 43 can rotate along the axis of the locking part 4. A slide groove 12 is opened in the middle of the support 11 and extends to one side. The end of the slide groove 12 is provided with a snap groove 13 that matches the limit key 43. The snap groove 13 and the slide groove 12 are perpendicular to each other. The locking part 4 can slide in the slide groove 12. The limit key 43 and the corresponding snap groove 13 form a horizontal limiting structure.

[0023] The ball valve body 1 has a groove 12 extending to one side at the top. The locking member 4 at the bottom of the pneumatic actuator 2 can slide inward at the opening of the groove 12. When the drive shaft 21 of the pneumatic actuator 2 is connected to the valve stem 14, the locking member 4 can rotate, and the limit key 43 and the corresponding latching groove 13 form a horizontal limit structure. This assembly structure can achieve quick assembly and disassembly, which can improve the assembly efficiency between the pneumatic actuator 2 and the ball valve body 1. At the same time, the pneumatic actuator 2 can be quickly disassembled and inspected separately during maintenance without disassembling the entire pneumatic ball valve, thus maintaining the integrity of the pipeline system.

[0024] Specifically, such as Figure 4 As shown, the top of the locking component 4 is provided with a knob 41, which is rotatably set at the corner of the bracket 3 by means of an elastic element. The bottom of the locking component 4 is provided with a horizontally set limiting plate 44. The support 11 and the bracket 3 form a vertical limiting structure through the knob 41 and the limiting plate 44.

[0025] Specifically, such as Figure 5 and 6 As shown, the limiting key 43 has a semi-circular structure, and the center of the limiting key 43 coincides with the axis of the locking member 4. The locking groove 13 and the limiting key 43 have a matching structure.

[0026] Specifically, such as Figure 2 As shown, the bottom of the pneumatic actuator 2 is a rotatable drive shaft 21. The side wall of the drive shaft 21 is provided with a slot 22. The slot 22 is a plate-like structure. The top of the valve stem 14 is an insert-like structure that matches the slot 22. The top of the valve stem 14 can be located on one side of the slot 22 and embedded inside the drive shaft 21.

[0027] An assembly process for a pneumatic ball valve: Rotate the valve stem 14, which has a central insert-like structure on the support 11, to a horizontal position so that the valve stem 14 is parallel to the slide groove 12. Then, slide the locking member 4 at the bottom of the bracket 3 inward along one end of the slide groove 12 so that the top of the valve stem 14 can be embedded in the drive shaft 21 on one side of the slot 22. At the same time, the locking member 4 rotates under the action of the elastic member. The elastic member is preferably made of a torsion spring, so that the semi-circular limiting key 43 rotates and forms a horizontal limiting structure with the corresponding snap groove 13, thus completing the quick installation.

[0028] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A pneumatic ball valve, comprising a ball valve body, a pneumatic actuator, and a valve stem, wherein one end of the valve stem extends into the interior of the ball valve body for driving a valve core to rotate, and the other end of the valve stem is connected to the pneumatic actuator, characterized in that: The top of the ball valve body is a support, and the valve stem is rotatably positioned at the center of the support. The bottom of the pneumatic actuator is provided with a bracket connected to the support. Several rotatable locking parts are provided at the corners of the bottom of the bracket. A limit key is provided in the middle of the locking part. The limit key can rotate along the axis of the locking part. A sliding groove is opened in the middle of the support and extends to one side. The end of the sliding groove is provided with a snap groove that matches the limit key. The snap groove and the sliding groove are perpendicular to each other. The locking part can slide in the sliding groove. The limit key and the corresponding snap groove form a horizontal limiting structure.

2. A pneumatic ball valve according to claim 1, characterized in that: The locking component has a knob on top, which is rotatably mounted on the corner of the bracket via an elastic element. The locking component has a horizontally positioned limiting plate at the bottom, and the support and bracket form a vertical limiting structure through the knob and the limiting plate.

3. A pneumatic ball valve according to claim 2, characterized in that: The limiting key has a semi-circular structure, with the center of the limiting key coinciding with the axis of the locking component, and the locking groove matching the limiting key.

4. A pneumatic ball valve according to claim 1, characterized in that: The bottom of the pneumatic actuator is a rotatable drive shaft. The side wall of the drive shaft has a slot, which is a plate-like structure. The top of the valve stem is a plate-like structure that matches the slot. The top of the valve stem can be located on one side of the slot and embedded inside the drive shaft.

5. A pneumatic ball valve according to any one of claims 1-4, characterized in that: The ball valve body includes a valve body and mounting flanges at both ends. Several mounting holes are provided at both ends of the valve body, and the mounting flanges are connected and fixed to the mounting holes at the ends of the valve body by fixing bolts.

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