Semi-automatic gas switching device

Abstract

The utility model discloses a semi-automatic gas switching device, which relates to the gas switching field, and comprises a mounting plate, the upper side surface of the mounting plate is fixedly connected with an adjusting pipe, the outer surface of the adjusting pipe is provided with an alarm device, the inner part of the adjusting pipe is provided with an adjusting assembly, the outer surface of the adjusting pipe is fixedly connected with two transmission pipes, and the two transmission pipes are fixedly connected with the mounting plate. Mounting frames are fixedly connected to the top walls of the two conveying pipes, switches are fixedly connected to the inner walls of the sides, close to each other, of the two mounting frames, the switches are electrically connected with an alarm device, two limiting rods are fixedly connected to the inner walls of the mounting frames, and the outer surfaces of the two limiting rods are slidably sleeved with pressure plates; according to the utility model, through the cooperation of the adjusting plate and the threaded rod, the connection point at one end of the first spring can move horizontally, so that the pressure required when the pressure plate is pulled to reset is adjusted, and the trigger pressure of the alarm device can be adjusted according to requirements in different scenes.

Description

Technical Field

[0001] This utility model relates to a gas switching device, specifically a semi-automatic gas switching device. Background Technology

[0002] A gas switching device is a device that automatically switches to a backup gas cylinder group when the pressure of the main gas cylinder group drops to the set pressure, thereby achieving uninterrupted gas supply. Due to its special function, it has been widely used.

[0003] For example, Chinese utility model patent CN218119381U includes an operating tube, on which a first connecting pipe, a second connecting pipe, and an exhaust pipe are fixedly connected. An automatic reminder structure is provided on the inner side of both the first and second connecting pipes. The automatic reminder structure includes a support plate installed on the inner side of the first and second connecting pipes. This semi-automatic gas switching device works by the gas in the gas tank being discharged through the first connecting pipe. The resulting airflow exerts force on a force plate, causing the force plate to move and press a switch. As the gas in the gas tank gradually decreases, the gas flowing through the first connecting pipe also decreases. The tension of the spring causes the force plate to disengage from the switch, and an alarm connected to the switch in the first connecting pipe sounds, thus reminding the operator to switch the gas. Furthermore, the switching structure can be used to switch the ventilation path, achieving the purpose of semi-automatic gas switching.

[0004] However, in actual use, different needs require switching between different pressures, while the reminder device in this patent has a constant pressure, a limited range of application, and cannot adjust the pressure when reminding according to different needs, which has certain shortcomings. In view of this, we propose a semi-automatic gas switching device. Utility Model Content

[0005] To address the shortcomings of existing technologies, such as constant pressure in the reminder device, limited applicability, and inability to adjust the pressure during reminders according to different needs, this utility model provides a semi-automatic gas switching device.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0007] This utility model relates to a semi-automatic gas switching device, comprising a mounting plate. An adjusting tube is fixedly connected to the upper surface of the mounting plate. An alarm device is installed on the outer surface of the adjusting tube. An adjusting component is installed inside the adjusting tube. Two transmission tubes are fixedly connected to the outer surface of the adjusting tube. A mounting frame is fixedly connected to the top wall of each of the two transmission tubes. A switch is fixedly connected to the inner wall of each of the two mounting frames on adjacent sides. The switch is electrically connected to the alarm device. Two limiting rods are fixedly connected to the inner wall of the mounting frame. A pressure plate is slidably fitted onto the outer surface of the two limiting rods. A first spring is fixedly connected to the surface of the pressure plate away from the switch. An adjusting plate is slidably fitted onto the outer surface of the two limiting rods. The end of the first spring away from the pressure plate is fixedly connected to the adjusting plate. A threaded rod is rotatably connected to the inner wall of the mounting frame. The adjusting plate is threadedly fitted onto the outer surface of the threaded rod. An adjusting component is installed on the threaded rod.

[0008] As a preferred embodiment of this utility model, the adjusting component includes a bevel gear, which is sleeved on the outer surface of the threaded rod. A closed frame is fixedly connected to the outer surface of the transmission tube, and a knob is rotatably connected to the upper surface of the closed frame. A rotating shaft is fixedly connected to the lower end of the knob.

[0009] As a preferred technical solution of this utility model, the lower end of the rotating shaft rotatably penetrates into the interior of the mounting frame, and a bevel gear is also fixedly connected to the lower end of the rotating shaft. The two bevel gears mesh with each other. A first speed-changing gear is sleeved on the outer surface of the rotating shaft inside the closed frame, and a second speed-changing gear is rotatably connected to the top wall of the closed frame.

[0010] As a preferred technical solution of this utility model, the first gear and the second gear are meshed and connected, and an indicator needle is fixedly connected to the upper end of the second gear, the indicator needle extending out of the upper side of the closed frame.

[0011] As a preferred embodiment of this utility model, the upper surface of the closed frame is provided with a scale, the upper surface of the adjusting tube is fixedly connected with a mounting plate, the upper surface of the mounting plate is provided with a limiting groove, the limiting groove is fan-shaped, and the mounting plate is provided with a control shaft.

[0012] As a preferred embodiment of this utility model, the control shaft rotates through the interior of the adjustment tube and is connected to the adjustment assembly. An L-shaped limiting rod is fixedly connected to the outer surface of the control shaft, and the L-shaped limiting rod extends into the interior of the limiting groove.

[0013] As a preferred embodiment of this utility model, a reset ring is sleeved on the outer surface of the control shaft, a displacement ring is slidably sleeved on the outer surface of the control shaft, and a locking protrusion is fixedly connected to the upper surface of the mounting plate.

[0014] As a preferred embodiment of this utility model, a locking cylinder adapted to the locking protrusion is fixedly connected to the outer surface of the displacement ring, a second spring is fixedly connected between the displacement ring and the reset ring, and a pressure reducing valve is provided on the mounting plate, which is connected to the transmission pipe.

[0015] The beneficial effects of this utility model are: the semi-automatic gas switching device, through the cooperation of the adjusting plate and the threaded rod, enables one end connection point of the first spring to move horizontally, thereby adjusting the pressure required when the pressure plate is pulled back to its original position, and thus the trigger pressure of the alarm device can be adjusted according to the needs in different scenarios.

[0016] The beneficial effects of this utility model are: the semi-automatic gas switching device can limit the rotation angle during rotation by cooperating with the L-shaped limiting rod and the limiting groove, thereby achieving accuracy after switching. Furthermore, the control shaft can be locked by cooperating with the displacement ring locking protrusion and the locking cylinder to avoid accidental rotation. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the semi-automatic gas switching device of this utility model.

[0019] Figure 2 This is a schematic diagram of the internal structure of the regulating tube of the semi-automatic gas switching device of this utility model;

[0020] Figure 3 This is a schematic diagram of the scale of the semi-automatic gas switching device of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the first speed-changing gear of the semi-automatic gas switching device of this utility model;

[0022] Figure 5 This is a schematic diagram of the limiting groove of the semi-automatic gas switching device of this utility model;

[0023] Figure 6 This is a schematic diagram of the displacement ring structure of the semi-automatic gas switching device of this utility model.

[0024] In the diagram: 1. Mounting plate; 2. Adjusting pipe; 3. Alarm device; 4. Transmission pipe; 5. Mounting frame; 6. Switch; 7. Limiting rod; 8. Pressure plate; 9. First spring; 10. Adjusting plate; 11. Threaded rod; 12. Bevel gear; 13. Enclosed frame; 14. Knob; 15. Rotating shaft; 16. First gear; 17. Second gear; 18. Indicator needle; 19. Scale; 20. Mounting disc; 21. Limiting groove; 22. Control shaft; 23. L-shaped limiting rod; 24. Reset ring; 25. Displacement ring; 26. Locking protrusion; 27. Locking cylinder; 28. Second spring; 29. ​​Pressure reducing valve. Detailed Implementation

[0025] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0026] Example: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the semi-automatic gas switching device of this utility model includes a mounting plate 1. An adjusting pipe 2 is fixedly connected to the upper surface of the mounting plate 1. An alarm device 3 is installed on the outer surface of the adjusting pipe 2. An adjusting assembly is installed inside the adjusting pipe 2. Two transmission pipes 4 are fixedly connected to the outer surface of the adjusting pipe 2. A mounting frame 5 is fixedly connected to the top wall of each of the two transmission pipes 4. A switch 6 is fixedly connected to the inner wall of each of the two mounting frames 5 on their adjacent sides. The switch 6 is electrically connected to the alarm device 3. Two limiting rods 7 are fixedly connected to the inner wall of the mounting frame 5. A pressure plate 8 is slidably fitted onto the outer surface of the two limiting rods 7, with the pressure plate 8 located away from the switch 6. A first spring 9 is fixedly connected to one side surface of the device. An adjusting plate 10 is slidably sleeved on the outer surface of the two limiting rods 7. The end of the first spring 9 away from the pressure plate 8 is fixedly connected to the adjusting plate 10. A threaded rod 11 is rotatably connected to the inner wall of the mounting frame 5. The adjusting plate 10 is threadedly sleeved on the outer surface of the threaded rod 11. An adjusting component is provided on the threaded rod 11. Through the cooperation of the adjusting plate 10 and the threaded rod 11, the connection point of one end of the first spring 9 can move horizontally, thereby adjusting the pressure required when the pressure plate 8 is pulled back to reset. Thus, the triggering pressure of the alarm device 3 can be adjusted according to the needs in different scenarios.

[0027] The adjusting assembly includes a bevel gear 12, which is sleeved on the outer surface of the threaded rod 11. A closed frame 13 is fixedly connected to the outer surface of the transmission pipe 4. A knob 14 is rotatably connected to the upper surface of the closed frame 13. A rotating shaft 15 is fixedly connected to the lower end of the knob 14. The lower end of the rotating shaft 15 rotatably penetrates into the interior of the mounting frame 5. A bevel gear 12 is also fixedly connected to the lower end of the rotating shaft 15. The two bevel gears 12 mesh with each other. A first speed-changing gear 16 is sleeved on the outer surface of the rotating shaft 15 inside the closed frame 13. A second gear 17 is rotatably connected to the top wall of the closed frame 13. The first gear 16 meshes with the second gear 17. An indicator needle 18 is fixedly connected to the upper end of the second gear 17, extending out of the upper side of the closed frame 13. A scale 19 is provided on the upper surface of the closed frame 13. A mounting plate 20 is fixedly connected to the upper surface of the adjusting tube 2. A limit groove 21 is formed on the upper surface of the mounting plate 20. The limit groove 21 is fan-shaped. A control shaft 22 is provided on the mounting plate 20, and the control shaft 22 rotates through the adjusting tube. The control shaft 22 is internally connected to the adjustment assembly. An L-shaped limiting rod 23 is fixedly connected to the outer surface of the control shaft 22. The L-shaped limiting rod 23 extends into the interior of the limiting groove 21. A reset ring 24 is sleeved on the outer surface of the control shaft 22. A displacement ring 25 is slidably sleeved on the outer surface of the control shaft 22. A locking protrusion 26 is fixedly connected to the upper surface of the mounting plate 20. A locking cylinder 27 that matches the locking protrusion 26 is fixedly connected to the outer surface of the displacement ring 25. A second spring 28 is fixedly connected between the displacement ring 25 and the reset ring 24. The mounting plate 1 is equipped with... There is a pressure reducing valve 29, which is connected to the transmission pipe 4. Through the pressure reducing structure, the output pressure is stabilized. This structure can effectively reduce the pressure fluctuation of gas during transmission, thereby improving the gas utilization rate and synthesis efficiency of MPCVD equipment. The L-shaped limiting rod 23 and the limiting groove 21 can restrict the rotation angle during rotation, thereby achieving accuracy after switching. Furthermore, the control shaft 22 can be locked by the cooperation of the displacement ring locking protrusion 26 and the locking cylinder 27 to avoid accidental rotation.

[0028] The adjustment component described in the text is an existing structure, which can be found in patent publication number CN218119381U. Furthermore, the gas used in this device is a high-purity gas, such as hydrogen, nitrogen, or methane. Air and air particles are not allowed to enter the gas connection pipelines, and the gas inside the pipelines is completely isolated from the outside environment. Whether the device automatically switches between its main and backup gas cylinders or manually changes cylinders, there is no gas exchange with the outside world, and there is no leakage of any kind. This prevents other impurities from affecting the quality of diamond growth.

[0029] During operation: The device adopts a dual-source structure with a main gas cylinder group and a backup gas cylinder group. Under normal use, the pressure plate 8 is always in close contact with the switch 6. When the pressure of the corresponding gas cylinder is insufficient, the pressure plate 8 separates from the switch 6 under the pull of the first spring 9. At this time, the alarm device 3 is activated, thus reminding the staff to replace the gas cylinder. When replacing the gas cylinder, the displacement ring 25 is pulled upward. When the displacement ring 25 moves, it stretches the second spring 28. When the displacement ring 25 moves, it will simultaneously drive the locking cylinder 27 to move. After the locking cylinder 27 moves, it separates from the locking protrusion 26, thereby unlocking the control shaft 22. At this time, rotating the control shaft 22 will simultaneously drive the L-shaped limiting rod 23 to rotate inside the limiting groove 21. With the help of the L-shaped limiting rod 23 and the limiting groove 21, the control shaft 22 can only rotate 90 degrees, thus completing the switching of the gas cylinder, thereby ensuring the continuous operation of the MPCVD equipment and avoiding gas supply issues. In the event of an interruption leading to experimental failure or equipment damage, after switching, the displacement ring 25 is released, and under the action of the second spring 28, the locking cylinder 27 is reconnected to the locking protrusion 26, thereby completing the locking of the control shaft 22. When it is necessary to adjust the trigger pressure of the alarm device 3, the knob 14 can be rotated. The knob 14 synchronously drives the rotating shaft 15 to rotate. When the rotating shaft 15 rotates, it cooperates with the two bevel gears 12 to drive the threaded rod 11 to rotate. Since the movement trajectory of the adjusting plate 10 is restricted by the limit rod 7, the rotating threaded rod 11 will synchronously drive the adjusting plate 10 to move horizontally. Then, the trigger pressure can be adjusted by adjusting the initial tension of the first spring 9. At the same time, when the rotating shaft 15 rotates, the first speed gear 16 and the second speed gear 17 will also drive the indicator needle 18 to rotate. When the indicator needle 18 rotates, it cooperates with the scale 19 to display the current trigger pressure.

[0030] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the 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 this utility model should be included within the protection scope of this utility model.

Claims

1. A semi-automatic gas switching device, comprising a mounting plate (1), characterized in that: An adjusting tube (2) is fixedly connected to the upper surface of the mounting plate (1). An alarm device (3) is provided on the outer surface of the adjusting tube (2). An adjusting assembly is provided inside the adjusting tube (2). Two transmission tubes (4) are fixedly connected to the outer surface of the adjusting tube (2). A mounting frame (5) is fixedly connected to the top wall of each of the two transmission tubes (4). A switch (6) is fixedly connected to the inner wall of each of the two mounting frames (5) on the adjacent side. The switch (6) is electrically connected to the alarm device (3). Two limit rods are fixedly connected to the inner wall of the mounting frame (5). 7) Pressure plates (8) are slidably sleeved on the outer surfaces of the two limiting rods (7). A first spring (9) is fixedly connected to the side surface of the pressure plate (8) away from the switch (6). Adjusting plates (10) are slidably sleeved on the outer surfaces of the two limiting rods (7). The end of the first spring (9) away from the pressure plate (8) is fixedly connected to the adjusting plate (10). A threaded rod (11) is rotatably connected to the inner wall of the mounting frame (5). The adjusting plate (10) is threadedly sleeved on the outer surface of the threaded rod (11). An adjusting component is provided on the threaded rod (11).

2. The semi-automatic gas switching device according to claim 1, characterized in that: The adjustment assembly includes a bevel gear (12), which is sleeved on the outer surface of the threaded rod (11). A closed frame (13) is fixedly connected to the outer surface of the transmission tube (4). A knob (14) is rotatably connected to the upper surface of the closed frame (13). A rotating shaft (15) is fixedly connected to the lower end of the knob (14).

3. The semi-automatic gas switching device according to claim 2, characterized in that: The lower end of the rotating shaft (15) rotates through into the interior of the mounting frame (5). The lower end of the rotating shaft (15) is also fixedly connected to a bevel gear (12). The two bevel gears (12) mesh with each other. The outer surface of the rotating shaft (15) located inside the closed frame (13) is fitted with a first speed-changing gear (16). The top wall of the closed frame (13) is rotatably connected to a second speed-changing gear (17).

4. The semi-automatic gas switching device according to claim 3, characterized in that: The first gear (16) meshes with the second gear (17), and an indicator needle (18) is fixedly connected to the upper end of the second gear (17). The indicator needle (18) extends out of the upper side of the closed frame (13).

5. The semi-automatic gas switching device according to claim 4, characterized in that: The upper surface of the closed frame (13) is provided with a scale (19), the upper surface of the adjusting tube (2) is fixedly connected with a mounting plate (20), the upper surface of the mounting plate (20) is provided with a limiting groove (21), the limiting groove (21) is set in a fan shape, and the mounting plate (20) is provided with a control shaft (22).

6. The semi-automatic gas switching device according to claim 5, characterized in that: The control shaft (22) rotates through the interior of the adjustment tube (2) and is connected to the adjustment assembly. An L-shaped limiting rod (23) is fixedly connected to the outer surface of the control shaft (22), and the L-shaped limiting rod (23) extends into the interior of the limiting groove (21).

7. The semi-automatic gas switching device according to claim 6, characterized in that: A reset ring (24) is sleeved on the outer surface of the control shaft (22), a displacement ring (25) is slidably sleeved on the outer surface of the control shaft (22), and a locking protrusion (26) is fixedly connected to the upper surface of the mounting plate (20).

8. The semi-automatic gas switching device according to claim 7, characterized in that: The outer surface of the displacement ring (25) is fixedly connected to a locking cylinder (27) that is compatible with the locking protrusion (26). A second spring (28) is fixedly connected between the displacement ring (25) and the reset ring (24). A pressure reducing valve (29) is provided on the mounting plate (1). The pressure reducing valve (29) is connected to the transmission pipe (4).

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