Automatic mixed gas switching device

Abstract

The utility model discloses a mixed gas automatic switching device, including fixed plate, side plate and mixed gas tank, one side edge of fixed plate is connected with side plate through bolt, the side of side plate close to two sets of base is equipped with drive mechanism, drive mechanism includes fixed block, screw rod, moving block and servo motor, and the fixed block is equipped with the screw rod, the moving block is equipped with the servo motor. A limiting frame is connected to the outer wall of the moving block, a switching box is arranged at the tops of the two mixed gas tanks, a controller is arranged on the inner wall of the top of the switching box, and a warning lamp is arranged on the outer wall of the top of the switching box. The moving block moves to drive the limiting frame to move, so that the mixed gas tank is conveniently fixed, the phenomenon that the mixed gas tank topples over due to external touch is avoided, after gas switching is completed, when the barometer detects that the gas pressure reduction allowance of one group of mixed gas tanks is insufficient, a signal is transmitted to the controller, and the controller controls the controller to switch the gas. And the controller controls the warning lamp to be turned on so as to remind a worker to replace the gas cylinder as soon as possible, so that uninterrupted gas supply is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic gas switching, in particular to an automatic mixed gas switching device. Background Art

[0002] The gas switching device is a device that automatically switches the system when the pressure of the main gas supply cylinder group drops to the set pressure, and the backup gas cylinder group starts to supply gas, thereby realizing the uninterrupted gas supply function. The application number CN201810183084.5 has been retrieved, which is a multi-channel gas switching device. The multi-channel gas switching device of the invention only needs to arrange the multi-channel sampling probes before the test, and the switch of the switching device is connected to the test operation table. The function of switching the multi-channel gas sampling can be achieved by powering on and off. Moreover, the valve body and the valve seat can be separated, which is more convenient and quick to maintain.

[0003] Similar to the above-mentioned multi-channel gas switching device: although it is only necessary to arrange multiple sampling probes before the test, the switching device switch is connected to the test operating table, and the power is turned on and off to achieve the function of switching multiple gas sampling, but firstly, there is generally no protective structure where the gas cylinders are placed at this stage, and the gas cylinders are exposed to the outside and are easily touched and tipped over. Secondly, when the gas switching is completed, it cannot automatically and promptly alarm the staff, and it is easy to miss the time to replace the gas cylinder group.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a mixed gas automatic switching device is proposed to achieve a more practical purpose. Utility Model Content

[0005] The purpose of the utility model is to provide an automatic switching device for mixed gas to solve the problem that the above-mentioned cooling tower with a sprinkler plate proposed in the above-mentioned background technology is firstly prone to generate a lot of noise in the air outlet area close to the fan, affecting the surrounding production environment, and it does not have a noise reduction function; secondly, during the long-term operation of the cooling tower, the air inlet net is prone to residual impurities such as scale and water stains, which are easy to be blocked, resulting in poor air inlet and thus reducing the cooling effect.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solution: an automatic switching device for mixed gas, comprising a fixed plate, a side plate and a mixed gas tank, bases are arranged on both sides of the top of the fixed plate, and the side plate is connected to the edge of one side of the fixed plate by bolts, and limiting grooves are arranged at the bottom ends of the two groups of the bases, and the mixed gas tank is embedded in the limiting grooves, and a driving mechanism is arranged on one side of the side plate close to the two groups of the bases.

[0007] Furthermore, the driving mechanism includes a fixed block, a screw, a moving block and a servo motor, the bottom end of the fixed block is connected to the screw through a bearing, the outer wall of the screw is threadedly connected to the moving block, the top of the fixed block is connected to the servo motor, and the output end of the servo motor is connected to the screw.

[0008] Furthermore, the outer wall of the movable block is connected to the limit frame, the side plates are provided with limit grooves on both sides of the screw, sliders are provided on both sides of the limit frame, two groups of sliders are respectively embedded in the limit grooves on both sides, and the limit frame is sleeved on the outside of the mixed gas tank.

[0009] Furthermore, the tops of the two groups of mixed gas tanks are connected with air pipes, a switching box is provided on the tops of the two groups of mixed gas tanks, the two groups of air pipes are connected with a pressure regulating valve through the switching box, a ball valve is provided in the middle of the air pipe, a solenoid valve is connected in series on the top of the ball valve, and a pressure gauge is connected to the top of the pressure regulating valve.

[0010] Furthermore, the middle parts of the two groups of air pipes are connected through a connecting pipe, both ends of the connecting pipe are provided with No. 2 ball valves, and the middle part of the connecting pipe is provided with a mixed gas analyzer.

[0011] Furthermore, a delivery pipe is connected to the intersection of the ends of the two groups of air pipes, a controller is provided on the top inner wall of the switching box, a warning light is provided on the top outer wall of the switching box, and the controller is connected to the pressure gauge, solenoid valve and warning light through electric wires.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the automatic mixed gas switching device uses the moving block to drive the limit frame to move, so as to facilitate the fixing of the mixed gas tank, and prevent the mixed gas tank from tipping over due to external contact. When the gas switching is completed, the barometer detects that the pressure of a group of mixed gas tanks is insufficient, and transmits a signal to the controller. The controller controls the warning light to light up, thereby reminding the staff to replace the gas cylinder as soon as possible, so as to achieve uninterrupted gas supply. The specific contents are as follows:

[0013] The outer wall of the moving block is connected to the limit frame, which serves to limit the mixed gas tank. A groove is arranged inside the limit frame through which the mixed gas tank can pass, and the limit frame is connected to the screw through the output end of the servo motor. The screw can be driven to rotate by the servo motor, and the rotation of the screw drives the moving block to perform lifting and lowering movements. The movement of the moving block can drive the limit frame to move, thereby facilitating the fixing of the mixed gas tank to prevent the mixed gas tank from tipping over due to external contact. At the same time, when the mixed gas tank needs to be replaced, the limit frame can be driven by the servo motor to move to the bottom base, thereby facilitating the replacement, removal and maintenance of the mixed gas tank. The side panels are provided with limit slots on both sides of the screw, and sliders are provided on both sides of the limit frame. The two sets of sliders are respectively embedded in the limit slots on both sides. Inside, the slider can move in the limit slide groove, the limit slide groove and the slider play a limiting role, the limit frame is sleeved on the outside of the mixed gas tank, the intersection of the ends of the two groups of gas pipes is connected with a delivery pipe, the delivery pipe plays a delivery role, a controller is arranged on the top inner wall of the switching box, and a warning light is arranged on the top outer wall of the switching box. The controller and the pressure gauge, the solenoid valve and the warning light are all connected by wires. The controller will control the switch of the solenoid valve according to the monitoring data of the pressure gauge, so as to complete the switching of the mixed gas. When the gas switching is completed, the pressure gauge detects that the pressure reduction margin of a group of mixed gas tanks is insufficient, and transmits a signal to the controller. The controller controls the warning light to light up to remind the staff to replace the gas cylinder as soon as possible, so as to achieve uninterrupted gas supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the main structure of the automatic mixed gas switching device of the utility model;

[0015] Figure 2 This is a schematic diagram of the front view structure of the automatic switching device for mixed gas of the utility model;

[0016] Figure 3 This is a schematic diagram of the driving mechanism structure of the mixed gas automatic switching device of the utility model;

[0017] Figure 4 This is a schematic diagram of the limit frame structure of the mixed gas automatic switching device of the utility model.

[0018] In the figure: 1. fixed plate; 101. base; 2. side plate; 3. limit groove; 4. mixed gas tank; 5. driving mechanism; 51. screw; 52. moving block; 53. servo motor; 6. limit frame; 7. limit slide groove; 8. slide block; 9. air pipe; 10. switching box; 11. pressure regulating valve; 12. ball valve; 13. solenoid valve; 14. pressure gauge; 15. connecting pipe; 16. No. 2 ball valve; 17. mixed gas analyzer; 18. delivery pipe; 19. controller; 20. warning light. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1 - Figure 4 The utility model provides a technical solution: a mixed gas automatic switching device, including a fixed plate 1, a side plate 2 and a mixed gas tank 4, bases 101 are arranged on both sides of the top of the fixed plate 1, and the base 101 plays a supporting role. The side plate 2 is connected to the edge of one side of the fixed plate 1 by bolts, and the side plate 2 plays a supporting and fixing role. Limiting grooves 3 are arranged at the bottom ends of the two groups of bases 101, and the mixed gas tank 4 is embedded in the limiting grooves 3. The limiting grooves 3 play a role of fixing the mixed gas pipe 4. A driving mechanism 5 is arranged on one side of the side plate 2 close to the two groups of bases 101, and the driving mechanism 5 plays a driving role.

[0021] The driving mechanism 5 includes a fixed block 51, a screw 52, ​​a moving block 53 and a servo motor 54. The bottom end of the fixed block 51 is connected to the screw 52 through a bearing, the outer wall of the screw 52 is threadedly connected to the moving block 53, the top of the fixed block 51 is connected to the servo motor 54, the output end of the servo motor 54 is connected to the screw 52, ​​the servo motor 54 can drive the screw 52 to rotate, and the rotation of the screw 52 drives the moving block 53 to perform lifting and lowering movements.

[0022] The outer wall of the moving block 53 is connected to the limiting frame 6, and the limiting frame 6 plays the role of limiting the mixed gas tank 4. A groove is arranged inside the limiting frame 6, through which the mixed gas tank 4 can pass. The output end of the servo motor 54 is connected to the screw 52, ​​and the screw 52 can be driven to rotate by the servo motor 54. The rotation of the screw 52 drives the moving block 53 to perform lifting and lowering movements. The movement of the moving block 53 can drive the limiting frame 6 to move, so as to facilitate the fixing of the mixed gas tank 4 to prevent the mixed gas tank 4 from tipping over due to external touch. At the same time, when the mixed gas tank 4 needs to be replaced, the servo motor 54 can drive the limiting frame 6 to move to the bottom base 101, so as to facilitate the replacement, removal and maintenance of the mixed gas tank 4. The side plates 2 are located on both sides of the screw 52 and are provided with limiting grooves 7. Both sides of the limiting frame 6 are provided with sliders 8. Two groups of sliders 8 are respectively embedded in the limiting grooves 7 on both sides. The sliders 8 can move in the limiting grooves 7. The limiting grooves 7 and the sliders 8 play a limiting role. The limiting frame 6 is sleeved on the outside of the mixed gas tank 4.

[0023] The tops of the two groups of mixed gas tanks 4 are both connected with air pipes 9, which play a connecting role. The tops of the two groups of mixed gas tanks 4 are provided with switching boxes 10, which play a certain protective role and can protect the air pipes. The two groups of air pipes 9 pass through the switching box 10 and are connected with a pressure regulating valve 11, which can adjust the output air pressure of the mixed gas tank 4. A ball valve 12 is provided in the middle of the air pipe 9, which can manually open or close the air pipe 9. The top of the ball valve 12 is connected in series with a solenoid valve 13, which also plays the role of opening and closing the air pipe 9. The top of the pressure regulating valve 11 is connected with a barometer 14, which can detect the air pressure in the mixed gas tank 4 to determine the remaining amount of gas in the tank. When the barometer 14 detects that the air pressure in one side of the mixed gas tank 4 is insufficient, the switches of the two groups of solenoid valves 13 are controlled to automatically switch the gas, so as to realize that when the remaining amount of one group of mixed gas tanks 4 is insufficient, it automatically switches to another group of mixed gas tanks 4 to transport the mixed gas to the delivery pipe 18 to avoid the supply of mixed gas.

[0024] The middle parts of the two groups of gas pipes 9 are connected through a connecting pipe 15. No. 2 ball valves 16 are provided at both ends of the connecting pipe 15. The No. 2 ball valve 16 can control the opening and closing of the connecting pipe 15 so as to facilitate the detection of the gas through the mixed gas analyzer 17. A mixed gas analyzer 17 is provided in the middle part of the connecting pipe 15. The mixed gas analyzer 17 can monitor the composition and concentration of the gas in real time and provide accurate data support for the operator.

[0025] The intersection of the ends of the two groups of gas pipes 9 is connected to a delivery pipe 18, which plays a delivery role. A controller 19 is provided on the top inner wall of the switching box 10, and a warning light 20 is provided on the top outer wall of the switching box 10. The controller 19 is connected to the pressure gauge 14, the solenoid valve 13 and the warning light 20 through wires. The controller 19 will control the switch of the solenoid valve 13 according to the monitoring data of the pressure gauge 14, so as to complete the switching of the mixed gas. When the gas switching is completed, the pressure gauge 14 detects that the pressure reduction margin of a group of mixed gas tanks 4 is insufficient, and transmits a signal to the controller 19. The controller 19 controls the warning light 20 to light up to remind the staff to replace the gas cylinder as soon as possible, thereby achieving uninterrupted gas supply.

[0026] Working principle: When using the mixed gas automatic switching device, the mixed gas tank 4 is embedded in the limit groove 3, and the limit groove 3 plays the role of fixing the mixed gas pipe 4. The servo motor 54 can drive the screw 52 to rotate, and the rotation of the screw 52 drives the moving block 53 to move up and down. The movement of the moving block 53 can drive the limit frame 6 to move, so as to facilitate the fixing of the mixed gas tank 4 to prevent the mixed gas tank 4 from tipping over due to external contact. At the same time, when the mixed gas tank 4 needs to be replaced, the servo motor 54 can drive the limit frame 6 to move to the bottom base 101, so as to facilitate the replacement, removal and maintenance of the mixed gas tank 4. The limit slide groove 7 and the slider 8 play a limiting role. When the barometer 14 detects that the mixed gas tank 4 on one side is When the internal air pressure is insufficient, the switches of the two groups of solenoid valves 13 are controlled to automatically switch the gas, so that when the remaining amount of one group of mixed gas tanks 4 is insufficient, it is automatically switched to another group of mixed gas tanks 4 to transport the mixed gas to the delivery pipe 18 to avoid interruption of the supply of mixed gas. The mixed gas analyzer 17 can monitor the composition and concentration of the gas in real time to provide accurate data support for the operator. The controller 19 will control the switch of the solenoid valve 13 according to the monitoring data of the barometer 14 to complete the switching of the mixed gas. When the barometer 14 detects that the air pressure is reduced, it transmits a signal to the controller 19. The controller 19 controls the warning light 20 to light up to remind the staff to replace the gas cylinder as soon as possible, thereby achieving uninterrupted gas supply.

Claims

1. A mixed gas automatic switching device, comprising a fixed plate (1), a side plate (2) and a mixed gas tank (4), characterized in that: Bases (101) are provided on both sides of the top of the fixing plate (1); a side plate (2) is connected to one edge of the fixing plate (1) via bolts; limiting grooves (3) are arranged at the bottom ends of the two groups of the bases (101); the mixed gas tank (4) is embedded in the limiting grooves (3); and a driving mechanism (5) is provided on one side of the side plate (2) close to the two groups of the bases (101).

2. The mixed gas automatic switching device according to claim 1, characterized in that: The driving mechanism (5) comprises a fixed block (51), a screw rod (52), a moving block (53) and a servo motor (54); the bottom end of the fixed block (51) is connected to the screw rod (52) via a bearing; the outer wall of the screw rod (52) is threadedly connected to the moving block (53); the top of the fixed block (51) is connected to the servo motor (54); and the output end of the servo motor (54) is connected to the screw rod (52).

3. The mixed gas automatic switching device according to claim 2, characterized in that: The outer wall of the moving block (53) is connected to a limit frame (6), and the side plates (2) are provided with limit slots (7) on both sides of the screw rod (52), and sliders (8) are provided on both sides of the limit frame (6). Two groups of sliders (8) are respectively embedded in the limit slots (7) on both sides, and the limit frame (6) is sleeved on the outside of the mixed gas tank (4).

4. The mixed gas automatic switching device according to claim 3, characterized in that: The tops of the two groups of mixed gas tanks (4) are both connected with gas pipes (9), the tops of the two groups of mixed gas tanks (4) are provided with switching boxes (10), the two groups of gas pipes (9) pass through the switching boxes (10) and are connected with pressure regulating valves (11), a ball valve (12) is provided in the middle of the gas pipes (9), the top of the ball valve (12) is connected in series with a solenoid valve (13), and the top of the pressure regulating valve (11) is connected with a pressure gauge (14).

5. The mixed gas automatic switching device according to claim 4, characterized in that: The middle parts of the two groups of gas pipes (9) are connected through a connecting pipe (15), both ends of the connecting pipe (15) are provided with a No. 2 ball valve (16), and the middle part of the connecting pipe (15) is provided with a mixed gas analyzer (17).

6. The mixed gas automatic switching device according to claim 5, characterized in that: The intersection of the ends of the two groups of air pipes (9) is connected to a delivery pipe (18), the top inner wall of the switching box (10) is provided with a controller (19), the top outer wall of the switching box (10) is provided with a warning light (20), and the controller (19) is connected to the pressure gauge (14), the solenoid valve (13) and the warning light (20) through electric wires.

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