Pneumatic instrument valve

Abstract

The utility model relates to pneumatic instrument valve technical field discloses a kind of pneumatic instrument valve, including valve body, the valve body outer wall is fixedly connected with mounting plate, the rotating knob is rotatably connected in the mounting plate inner wall, the rotating knob top end is connected with pneumatic equipment by buckle assembly, to be used for the disassembly of pneumatic equipment, the pneumatic equipment drive end is fixedly connected with valve rod, the valve rod bottom end is fixedly connected with valve flap, the valve flap outer wall is provided with expansion assembly, to be used for the gap sealing between valve flap and valve body. In the utility model, by rotating bolt and rotating knob, it can contact the limiting of connecting rod and pneumatic equipment, it can be taken out upward, disassembly is completed, maintenance time is greatly shortened, low efficiency caused by traditional complex disassembly process is avoided, and operation is simple and easy to operate, can effectively reduce maintenance cost and equipment downtime loss, improve the maintenance convenience of industrial automation equipment.

Description

Technical Field

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

[0002] Pneumatic instrument valves are automated instruments that use compressed air as power, receive control signals through valve positioners, and drive actuators to adjust the valve core opening. They achieve precise control of parameters such as flow, pressure, and temperature of the medium in the pipeline. They are characterized by simple control, fast response, and intrinsic safety, and are widely used in the regulation of working conditions and system control in chemical, petroleum, power and other industrial fields.

[0003] The traditional connection method between pneumatic equipment and valves has the disadvantage of inconvenient maintenance. In the existing technology, some pneumatic equipment adopts an integrated or complex fastening structure, which requires a lot of time to disassemble during maintenance, or even to replace the whole equipment, increasing maintenance costs and downtime.

[0004] In response to the technical problem of difficulty in disassembling and assembling pneumatic equipment, this application proposes a pneumatic instrument valve. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies where pneumatic equipment is difficult to disassemble and assemble. A pneumatic instrument valve is proposed that allows for easy removal of the connecting rod and pneumatic equipment by rotating a bolt and a knob. This significantly shortens maintenance time, avoids the inefficiency caused by traditional complex disassembly processes, and is simple and easy to operate. It effectively reduces maintenance costs and equipment downtime losses, and improves the ease of maintenance for industrial automation equipment.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A pneumatic instrument valve includes a valve body, an mounting plate fixedly connected to the outer wall of the valve body, a knob rotatably connected to the inner wall of the mounting plate, a pneumatic device connected to the top of the knob via a snap-fit ​​assembly for assembling and disassembling the pneumatic device, a valve stem fixedly connected to the drive end of the pneumatic device, a valve disc fixedly connected to the bottom end of the valve stem, and an expansion assembly provided on the outer wall of the valve disc for sealing the gap between the valve disc and the valve body.

[0008] Furthermore, the buckle assembly includes connecting rods fixedly connected to the four sides of the bottom of the pneumatic equipment, and each connecting rod has a slot on its inner wall.

[0009] Furthermore, a retaining plate is rotatably connected to the inner wall of the mounting plate, and multiple grooves are provided on the outer wall of the retaining plate. The shape of the grooves matches the shape of the connecting rod, and the shape of the retaining plate matches the shape of the retaining groove.

[0010] Furthermore, a gear is fixedly connected to the top of the knob, a gear ring is meshed with the outer wall of the gear, and the bottom end of the retaining plate is fixedly connected to the top of the gear ring.

[0011] Furthermore, the outer wall of the knob is provided with a bolt, the inner wall of the mounting plate is provided with a threaded groove, and the outer wall of the bolt is provided on the inner wall of the threaded groove.

[0012] Furthermore, the expansion assembly includes an expansion ring fixedly connected to the outer wall of the valve disc, a connecting pipe fixedly connected to the inner wall of the expansion ring, and an air pump fixedly connected to the other end of the connecting pipe.

[0013] Furthermore, a fixed frame is fixedly connected to the bottom of the pneumatic device, and the outer wall of the air pump is fixedly connected to the inner wall of the fixed frame.

[0014] This utility model has the following beneficial effects:

[0015] In this invention, by rotating the bolt and the knob, the limiting position of the connecting rod and the pneumatic equipment can be contacted, allowing them to be lifted out and disassembled. This significantly shortens maintenance time, avoids the inefficiency caused by traditional complex disassembly processes, and is simple and easy to operate. It can effectively reduce maintenance costs and equipment downtime losses, and improve the convenience of maintenance for industrial automation equipment.

[0016] In this invention, an expansion ring that expands when inflated is added to the valve disc. After inflation, the ring fits tightly against the valve body, automatically compensating for machining errors and wear to enhance the seal. This invention is suitable for complex working conditions such as high pressure and low temperature, and significantly improves the valve's sealing performance, adaptability to working conditions, and ease of maintenance. Attached Figure Description

[0017] Figure 1 This is a perspective view of a pneumatic instrument valve proposed in this utility model;

[0018] Figure 2 This is a cross-sectional view of the valve body of a pneumatic instrument valve proposed in this utility model;

[0019] Figure 3 This is a cross-sectional view of the mounting plate of a pneumatic instrument valve proposed in this utility model;

[0020] Figure 4 This is a cross-sectional view of the clamping plate of a pneumatic instrument valve proposed in this utility model;

[0021] Figure 5 This is a cross-sectional view of a pneumatic device for a pneumatic instrument valve proposed in this utility model.

[0022] Legend:

[0023] 1. Valve body; 2. Mounting plate; 3. Knob; 4. Bolt; 5. Gear; 6. Gear ring; 7. Clamping plate; 8. Groove; 9. Connecting rod; 10. Slot; 11. Pneumatic equipment; 12. Valve stem; 13. Valve disc; 14. Air pump; 15. Connecting pipe; 16. Expansion ring. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Reference Figures 2-4 As shown, one embodiment of this utility model provides a pneumatic instrument valve, including a valve body 1. A mounting plate 2 is fixedly connected to the outer wall of the valve body 1. A knob 3 is rotatably connected to the inner wall of the mounting plate 2. A pneumatic device 11 is provided at the top of the knob 3. Connecting rods 9 are fixedly connected to the four sides of the bottom of the pneumatic device 11. The inner wall of each connecting rod 9 is provided with a slot 10. A retaining plate 7 is rotatably connected to the inner wall of the mounting plate 2. Multiple grooves 8 are provided on the outer wall of the retaining plate 7. The shape of the grooves 8 matches the shape of the connecting rods 9, and the shape of the retaining plate 7 matches the shape of the slots 10. A gear 5 is fixedly connected to the top of the knob 3. A gear ring 6 is meshed with the outer wall of the gear 5. The bottom of the retaining plate 7 is fixedly connected to the top of the gear ring 6. A bolt 4 is provided on the outer wall of the knob 3. A threaded groove is provided on the inner wall of the mounting plate 2. The outer wall of the bolt 4 is located on the inner wall of the threaded groove for disassembly and assembly of the pneumatic device 11.

[0026] Specifically, during installation, first insert the valve stem 12 into the valve body 1, and insert the connecting rods 9 on the four sides of the bottom into the mounting plate 2. Ensure the sealing ring inside the pneumatic device 11 contacts the valve body 1. After installation, rotate the knob 3. The knob 3 drives the gear 5 to rotate, which in turn drives the gear ring 6 to rotate, and then the clamping plate 7 to rotate, clamping the clamping plate 7 into the clamping groove 10 to limit the connecting rod 9. Then, rotate the bolt 4 in the opposite direction to rotate it into the threaded groove, thus completing the installation. By rotating the bolt 4 and the knob 3, the limiting of the connecting rod 9 and the pneumatic device 11 can be engaged, allowing them to be removed upwards for disassembly. This significantly shortens maintenance time, avoids the inefficiency caused by traditional complex disassembly processes, and is simple and easy to operate. It effectively reduces maintenance costs and equipment downtime losses, improving the ease of maintenance for industrial automation equipment.

[0027] Reference Figure 1 and Figure 5As shown, a valve stem 12 is fixedly connected to the drive end of the pneumatic device 11, a valve disc 13 is fixedly connected to the bottom end of the valve stem 12, an expansion ring 16 is fixedly connected to the outer wall of the valve disc 13, a connecting pipe 15 is fixedly connected to the inner wall of the expansion ring 16, an air pump 14 is fixedly connected to the other end of the connecting pipe 15, a fixed frame is fixedly connected to the bottom end of the pneumatic device 11, and the outer wall of the air pump 14 is fixedly connected to the inner wall of the fixed frame for sealing the gap between the valve disc 13 and the valve body 1.

[0028] Specifically, the working principle of the pneumatic device 11 uses compressed air as a power source. The air compressor converts electrical energy into gas pressure energy, which is then transported through pipelines to pneumatic actuators such as cylinders and pneumatic motors. Control elements such as solenoid valves and pneumatic valves adjust the flow direction, pressure, and flow rate of compressed air according to signal commands, so that the actuators convert gas pressure energy into mechanical energy, drive the mechanism to complete linear motion, and realize automated control. By adding an inflation-expanding ring 16 to the valve disc 13, it can fit tightly against the valve body 1 after inflation, automatically compensate for machining errors and wear to strengthen the seal, and is suitable for complex working conditions such as high pressure and low temperature, significantly improving the valve sealing performance, working condition adaptability, and maintenance convenience.

[0029] Working principle: First, when disassembling the pneumatic device 11, first rotate bolt 4 to remove it from the threaded groove, releasing the limit on knob 3. Then, rotate knob 3, which drives gear 5 to rotate. Gear 5 drives gear ring 6 to rotate, and also drives the top retaining plate 7 to rotate, removing retaining plate 7 from the retaining groove 10. Then, rotate the grooves 8 on all four sides of retaining plate 7 to the connecting rod 9, releasing the limit on connecting rod 9. Then, the pneumatic device 11 can be removed upwards, completing the disassembly. Secondly, in the pneumatic... When the actuator 11 is in use, it drives the valve stem 12 at the bottom to rise and fall, and drives the valve disc 13 at the bottom to move, thereby closing or opening the valve body 1. Secondly, when closing, the air pump 14 draws out the air from the outside and delivers it to the expansion ring 16 through the connecting pipe 15, causing the expansion ring 16 to expand and make tight contact with the inner wall of the valve body 1. Secondly, when opening the valve body 1, the air pump 14 discharges the air pump 14 from the expansion ring 16 through the connecting pipe 15, causing the expansion ring 16 to shrink.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pneumatic instrument valve, characterized in that, The valve body (1) is fixedly connected to the outer wall of the valve body (1), and a knob (3) is rotatably connected to the inner wall of the mounting plate (2). The top of the knob (3) is connected to a pneumatic device (11) through a snap-fit ​​assembly for disassembly and assembly of the pneumatic device (11). A valve stem (12) is fixedly connected to the drive end of the pneumatic device (11), and a valve disc (13) is fixedly connected to the bottom end of the valve stem (12). An expansion assembly is provided on the outer wall of the valve disc (13) for sealing the gap between the valve disc (13) and the valve body (1).

2. A pneumatic instrument valve according to claim 1, characterized in that: The buckle assembly includes connecting rods (9) fixedly connected to the four sides of the bottom of the pneumatic device (11), and the inner wall of each connecting rod (9) is provided with a slot (10).

3. A pneumatic instrument valve according to claim 2, characterized in that: The mounting plate (2) has a rotatably connected card plate (7) on its inner wall. The outer wall of the card plate (7) has multiple grooves (8). The shape of the grooves (8) matches the connecting rod (9). The shape of the card plate (7) matches the card slot (10).

4. A pneumatic instrument valve according to claim 3, characterized in that: The knob (3) is fixedly connected to a gear (5) at its top end, and a gear ring (6) is meshed with the outer wall of the gear (5). The top end of the gear ring (6) is fixedly connected to the bottom end of a retaining plate (7).

5. A pneumatic instrument valve according to claim 2, characterized in that: The outer wall of the knob (3) is provided with a bolt (4), and the inner wall of the mounting plate (2) is provided with a threaded groove, and the outer wall of the bolt (4) is provided on the inner wall of the threaded groove.

6. A pneumatic instrument valve according to claim 1, characterized in that: The expansion assembly includes an expansion ring (16) fixedly connected to the outer wall of the valve disc (13), a connecting pipe (15) fixedly connected to the inner wall of the expansion ring (16), and an air pump (14) fixedly connected to the other end of the connecting pipe (15).

7. A pneumatic instrument valve according to claim 6, characterized in that: The bottom of the pneumatic device (11) is fixedly connected to a fixed frame, and the outer wall of the air pump (14) is fixedly connected to the inner wall of the fixed frame.

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