Full-automatic gas mixing device and use method thereof

Abstract

The invention belongs to the technical field of gas mixing, and particularly relates to a full-automatic gas mixing device and a using method thereof.The full-automatic gas mixing device comprises a gas supply mechanism, a mixing mechanism and a switching mechanism, the gas supply device comprises a first gas supply part and a second gas supply part, and single gas to be mixed is stored in the first gas supply part and the second gas supply part respectively; the mixing device comprises a mixed gas chamber, a gas inlet pipeline and a gas outlet pipeline, the mixed gas chamber is communicated with the gas supply mechanism through the gas inlet pipeline, one end of the gas outlet pipeline is connected with the mixed gas chamber, and the other end is connected with to-be-supplied gas equipment; the switching mechanism is arranged at one end of the air inlet pipeline, the first air supply part is provided with at least two air supply bottles, the switching mechanism comprises a switching seat and a sliding plate, the sliding plate is connected into the switching seat in a sliding mode, a through connector is formed in the sliding plate, and the air supply bottles are communicated with the air inlet pipeline through the through connector. According to the invention, gas can be automatically mixed, gas supply bottles can be automatically switched, the efficiency is improved, and the operation risk is reduced.

Description

Technical Field

[0001] The present application relates to the field of gas mixing technology, and in particular to a fully automatic gas mixing device and a method for using the same. Background Art

[0002] Mixed gases, consisting of two or more individual gases, are widely used in various fields. In nature, mixed gases (such as N2 and O2) impact ecosystems and human health. Artificially prepared mixed gases also play an important role in daily life and scientific research, such as industrial and laboratory gases. Because naturally occurring mixed gases cannot meet the needs of human life and scientific research, a device that can perform gas mixing is needed.

[0003] In the related art, in the existing gas mixing devices, when a dangerous situation occurs during the mixing of gases, the device can only be shut down manually. If the experimenter does not respond in time or operates improperly, it is easy to cause a safety accident, and even cause economic losses or casualties. Moreover, most of the current mixing devices require the operator to temporarily stop the device and manually replace it if a certain gas is found to be insufficient during the mixing process. The accuracy of the replacement operation is difficult to maintain and the efficiency is too low. Summary of the Invention

[0004] In order to improve the problem that when dangerous situations occur when mixing gases, the device can only be shut down manually, and if a certain gas is found to be insufficient during the mixing process, the operator needs to temporarily stop the device and manually replace it, and the replacement operation accuracy is difficult to maintain consistency and the efficiency is too low, the present application provides a fully automatic gas mixing device and its use method.

[0005] The fully automatic gas mixing device provided in this application adopts the following technical solution:

[0006] A fully automatic gas mixing device includes a gas supply mechanism, wherein the gas supply device includes a first gas supply member and a second gas supply member, wherein the first gas supply member and the second gas supply member each store a gas to be mixed;

[0007] A mixing mechanism, the mixing device comprising a mixing chamber, an air inlet pipe and an air outlet pipe, wherein one end of the air inlet pipe is connected to the mixing chamber and the other end is connected to the air supply mechanism, one end of the air outlet pipe is connected to the mixing chamber, and the end of the air outlet pipe away from the mixing chamber is connected to the equipment to be supplied with air;

[0008] A switching mechanism, the switching mechanism is arranged at one end of the air intake pipe away from the mixing gas chamber, the first air supply part is provided with at least two air supply bottles, the switching mechanism includes a switching seat and a sliding plate, the sliding plate is slidably connected in the switching seat, at least two through interfaces are opened on the sliding plate, the air supply bottle is connected to the air intake pipe through the through interface, in the initial state, one of the air supply bottles is connected to one of the through interfaces, and as the sliding plate moves, the other air supply bottle is connected to the air intake pipe through the other through interface, thereby realizing automatic switching of the air supply bottles.

[0009] Preferably, the air intake pipe includes a first pipe and a second pipe, the first pipe is provided with a first interface, the first interface is used to connect the first air supply part and the mixing chamber, the second pipe is provided with a second interface, the second pipe is used to connect the second air supply part and the mixing chamber.

[0010] Preferably, a first solenoid valve is provided on the first pipeline, a second solenoid valve is provided on the second pipeline, and a third solenoid valve is provided on the air outlet pipeline. The first solenoid valve, the second solenoid valve and the third solenoid valve are all used to control the opening and closing of the corresponding pipelines.

[0011] Preferably, a first air pump is provided on the air inlet pipe, and the first air pump is used to provide power for inputting gas into the mixed gas chamber. A second air pump is provided on the air outlet pipe, and the second air pump is used to provide power for outputting the mixed gas to the equipment to be supplied with gas.

[0012] Preferably, it also includes a first mass flow meter and a second mass flow meter, the first mass flow meter is arranged between the first solenoid valve and the first air pump, the second mass flow meter is arranged between the second solenoid valve and the first air pump, and the third mass flow meter is arranged between the third solenoid valve and the second air pump, the first mass flow meter is used to measure the flow rate of the input single gas, and the second mass flow meter is used to measure the flow rate of the output mixed gas.

[0013] Preferably, the mixed gas chamber is provided with a pressure detection element, a temperature detection element and a gas agitator. The pressure detection element is used to detect and display the air pressure in the mixed gas chamber, the temperature detection element is used to detect and display the temperature in the mixed gas chamber, and the gas agitator is used to stir multiple single gases to form a mixed gas.

[0014] Preferably, the switching mechanism also includes a mating baffle and a mating spring, one end of the mating spring is connected to an inner wall of one side of the switching seat, and the other end of the mating spring is fixedly connected to the mating baffle, and the mating baffle is slidably connected in the switching seat. In the initial state, one of the through interfaces on the sliding plate is connected to one of the gas supply bottles, and the mating plate is used to block the other gas supply bottle and the air intake pipe. As the sliding plate moves, the sliding plate abuts against the mating plate and presses the mating spring 26 until the through interface on the sliding plate is connected to the other gas supply bottle.

[0015] Preferably, the switching mechanism also includes a switching motor, a switching rack and a switching gear. The switching motor is arranged on the outer wall of the switching seat. The switching gear is coaxially connected to the output shaft end of the switching motor. The switching rack is fixedly connected to the sliding plate, and the switching rack is engaged with the switching gear.

[0016] Preferably, a pressure sensor is provided on the switching seat, and a pressure spring valve is provided on the gas supply bottle mouth. The pressure spring valve is used to detect the pressure in the gas supply bottle. The spring part in the pressure spring valve is against the pressure sensor. The pressure sensor is connected to the switching motor electrical signal. When the pressure sensor detects the pressure of the spring part, it sends a signal to the switching motor. The switching motor runs after receiving the signal to drive the sliding plate to move.

[0017] A method for using a fully automatic gas mixing device, comprising the aforementioned automatic gas mixing device, comprises the following steps:

[0018] S1: Install the first air supply component and the second air supply component;

[0019] S2: connecting the first air supply component and the mixed air chamber, and the second air supply component and the mixed air chamber through an air intake pipe;

[0020] S3: Connect the mixed gas chamber and the equipment to be supplied with gas through the gas outlet pipe;

[0021] S4: Debug the switching mechanism to put it in the initial state;

[0022] S5: After the device is connected, gas supply begins;

[0023] S7: When the pressure of one of the gas supply cylinders drops to a threshold value, the switching mechanism automatically switches the gas supply cylinder.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] 1. The setting of the gas supply mechanism and the mixing mechanism makes mixing the experimental gas more convenient and quick, realizes automatic control, simple operation, and saves time and effort;

[0026] 2. Automatically perform danger warning and emergency braking to avoid accidents caused by improper operation or untimely response of experimenters when danger occurs;

[0027] 3. Through the setting of the switching mechanism, the gas supply cylinder can be automatically switched, and there is no need to stop the machine for manual operation to replace the gas supply cylinder, which saves time and effort, is easy to use, and reduces manual participation, which can greatly improve safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Description of the accompanying drawings The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0029] Figure 1 This is a schematic diagram of the overall structure of the fully automatic gas mixing device of the present invention;

[0030] Figure 2 is a front view of the switching mechanism of the present invention;

[0031] Figure 3 It is a top view of the switching mechanism of the present invention.

[0032] In the figure: 1. First air supply part; 11. Air supply bottle; 2. Second air supply part; 3. First solenoid valve; 4. Second solenoid valve; 5. First mass flowmeter; 6. Second mass flowmeter; 7. First air pump; 8. Mixing gas chamber; 81. Air inlet pipe; 811. First pipe; 812. Second pipe; 82. Air outlet pipe; 9. Pressure display gauge; 10. Temperature display gauge; 11. Third solenoid valve; 12. Third mass flowmeter; 13. Second air pump; 14. Control terminal; 15. Equipment to be supplied with air; 16. Gas agitator; 17. Interface of equipment to be supplied with air; 18. First interface; 19. Second interface; 20. Pressure detector; 21. Temperature sensor; 22. Switching seat; 23. Sliding plate; 231. Through-hole; 232. Switching rack; 24. Switching motor; 241. Switching gear; 25. Matching plate; 26. Matching spring. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0034] Specific examples are given below.

[0035] See also Figure 1 、 Figure 2 and Figure 3 The present invention provides a technical solution: a fully automatic gas mixing device and a method for using the device. The device includes a gas supply mechanism and a mixing mechanism. The gas supply mechanism is arranged before the mixing mechanism. The gas supply mechanism provides multiple single gases. After the multiple single gases enter the mixing mechanism, they are mixed by the mixing mechanism to form a mixed gas. After the mixed gas is formed, it is output to the gas supply device 15. This device can realize automatic gas mixing, improve efficiency and enhance the safety of ventilation operations.

[0036] See also Figure 1 、 Figure 2 and Figure 3 The gas supply mechanism includes a first gas supply member 1 and a second gas supply member 2, and the first gas supply member 1 and the second gas supply member 2 each contain a single gas to be mixed.

[0037] See also Figure 1 、 Figure 2 and Figure 3 The mixing mechanism includes a mixed gas chamber 8, an air inlet pipe 81, and an air outlet pipe 8282. One end of the air inlet pipe 81 is connected to the mixed gas chamber 8. The end of the air inlet pipe 81 away from the mixed gas chamber 8 is provided with a first pipe 811 and a second pipe 812. One end of the first pipe 811 is provided with a first interface 18, and the first air supply member 1 is connected to the end of the first pipe 811 through the first interface 18. One end of the second pipe 812 is provided with a second interface 19, and the second air supply member 2 is connected to the end of the second pipe 812 through the second interface 19. One end of the air outlet pipe 82 is connected to the mixed gas chamber 8, and the other end is provided with a device interface. The air outlet pipe 8282 is connected to the device to be supplied 15 through the device interface.

[0038] See also Figure 1 、 Figure 2 and Figure 3 A first solenoid valve 3 is provided on the first pipe 811, a second solenoid valve 4 is provided on the second pipe 812, and a third solenoid valve 11 is provided on the outlet pipe 82. The first solenoid valve 3, the second solenoid valve 4 and the third solenoid valve 11 are all used to control the opening and closing of the corresponding pipes.

[0039] See also Figure 1 、 Figure 2 and Figure 3 A first air pump 7 is provided on the air inlet pipe 81, and the first air pump 7 is used to provide power for the gas to be input into the mixed gas chamber 8. A second air pump 13 is provided on the air outlet pipe 82, and the second air pump 13 is used to provide power for the mixed gas to be output to the gas supply equipment 15.

[0040] See also Figure 1 、 Figure 2 and Figure 3The device also includes a first mass flowmeter 5 and a second mass flowmeter 6. The first mass flowmeter 5 is arranged between the first solenoid valve 3 and the first air pump 7, the second mass flowmeter 6 is arranged between the second solenoid valve 4 and the first air pump 7, and the third mass flowmeter 12 is arranged between the third solenoid valve 11 and the second air pump 13. The first mass flowmeter 5 is used to measure the flow rate of the input single gas, and the second mass flowmeter 6 is used to measure the flow rate of the output mixed gas.

[0041] See also Figure 1 、 Figure 2 and Figure 3 The mixed gas chamber 8 is provided with a pressure detection component, a temperature detection component, and a gas agitator 16. The pressure detection component includes a pressure detector 20 and a pressure display gauge 9. The pressure detector 20 is arranged inside the mixed gas chamber 8, and the pressure display gauge 9 is arranged outside the mixed gas chamber 8, for detecting and displaying the air pressure inside the mixed gas chamber 8. The temperature detection component includes a temperature sensor 21 and a temperature display gauge 10. The temperature sensor 21 is arranged inside the mixed gas chamber 8, and the temperature display gauge 10 is arranged outside the mixed gas chamber 8, for detecting and displaying the temperature inside the mixed gas chamber 8. The gas agitator 16 is arranged inside the mixed gas chamber 8, for agitating multiple single gases to form a mixed gas.

[0042] See also Figure 1 、 Figure 2 and Figure 3 The device also includes a control terminal 14, a first solenoid valve 3, a second solenoid valve 4, a third solenoid valve 11, a first mass flowmeter 5, a second mass flowmeter 6, a pressure detection element, a temperature detection element and a gas agitator 16, all of which are electrically connected to the control terminal 14. Through the control of the PLC program, it is possible to promptly understand whether various data meet the indicators through the display screen of the control terminal 14.

[0043] See also Figure 1 、 Figure 2 and Figure 3During the mixing process, if the gas in a single gas supply bottle 11 is insufficient, it needs to be replaced in time, but manual replacement requires downtime and is time-consuming. Therefore, the device also includes a switching mechanism, which includes a switching seat 22, a sliding plate 23, and a matching plate 25. One side of the switching seat 22 is connected to the air intake pipe 81, and the sliding plate 23 is slidably connected to the switching seat 22. A pressure spring valve is provided at the bottle mouth of the gas supply bottle 11, and at least two through-holes 231 are provided on the sliding plate 23, specifically, two. The gas supply bottle 11 and the pressure spring valve are connected to the air intake pipe 81 through the through-holes 231. A switching motor 24 is fixedly connected to the outer wall of the switching seat 22, and a switching gear 241 is fixedly connected to the end of the output shaft of the switching motor 24. A switching rack 232 is fixedly connected to the sliding plate 23, and the switching rack 232 is meshed with the switching gear 241. A mating spring 26 is fixedly connected to the mating plate 25. The end of the mating spring 26, facing away from the mating plate 25, is fixedly connected to the inner wall of the switching seat 22. The mating plate 25 slides within the switching seat 22. The sliding direction of the mating plate 25 is the same as that of the sliding plate 23. A pressure sensor is fixedly connected to the switching seat 22 and is electrically connected to the switching motor 24. When the pressure sensor detects pressure, it sends a signal to the switching motor 24, which then switches the motor. Upon receiving the signal, the motor begins operating.

[0044] In the initial state, the first gas supply member 1 includes at least two gas supply bottles 11, specifically, two gas supply bottles 11. One of the gas supply bottles 11 is connected to the air inlet pipe 81 through the through-hole 231, and the other gas supply bottle 11 is isolated and sealed from the air inlet pipe 81 due to the blocking effect of the matching plate 25.

[0045] When the gas in one of the gas supply bottles 11 continues to be discharged, the pressure in the bottle gradually drops to a threshold value, and the spring member in the pressure spring valve shifts until the spring member presses against the pressure sensor. The pressure sensor detects the pressure signal and sends a signal to the switching motor 24. After receiving the signal, the switching motor 24 starts to operate, driving the switching gear 241 to rotate, and the switching gear 241 drives the switching rack 232 to move, thereby driving the sliding plate 23 to move.

[0046] The sliding plate 23 moves, gradually separating the current gas supply bottle 11 from the through-hole 231 until the sliding plate 23 completely blocks the current gas supply bottle 11, isolating the current gas supply bottle 11 from the air intake duct 81. As the sliding plate 23 moves, it abuts the mating plate 25, which compresses the mating spring 26, causing the mating plate 25 to slide. This causes the other through-hole 231 on the sliding plate 23 to connect with the other gas supply bottle 11, allowing the other gas supply bottle 11 to begin supplying gas.

[0047] The working principle of a fully automatic mixed gas device in this embodiment is as follows: the first gas supply part and the second gas supply part are connected to the mixed gas chamber through the air inlet pipe, and after being mixed by the gas agitator in the mixed gas chamber, a mixed gas is formed and output to the equipment to be supplied with gas through the air outlet pipe 82.

[0048] When the gas in one of the gas supply bottles 11 continues to be discharged, the pressure in the bottle gradually drops to a threshold value, and the spring member in the pressure spring valve shifts until the spring member presses against the pressure sensor. The pressure sensor detects the pressure signal and sends a signal to the switching motor 24. After receiving the signal, the switching motor 24 starts to operate, driving the switching gear 241 to rotate, and the switching gear 241 drives the switching rack 232 to move, thereby driving the sliding plate 23 to move.

[0049] The sliding plate 23 moves, gradually separating the current gas supply bottle 11 from the through-hole 231, until the sliding plate 23 completely blocks the current gas supply bottle 11, separating the current gas supply bottle 11 from the intake pipe 81. As the sliding plate 23 moves, the sliding plate 23 abuts the mating plate 25, which compresses the mating spring 26, causing the mating plate 25 to slide. This is until the other through-hole 231 on the sliding plate 23 is connected to the other gas supply bottle 11, allowing the other gas supply bottle 11 to achieve gas supply.

[0050] The present invention also provides a technical solution: a method for using a fully automatic gas mixing device, using the above-mentioned fully automatic gas mixing device, the steps are as follows:

[0051] S1: Install the first air supply component 1 and the second air supply component 2;

[0052] S2: connecting the first air supply member 1 and the mixed air chamber 8, and the second air supply member 2 and the mixed air chamber 8 through the air intake pipe 81;

[0053] S3: Connect the mixed gas chamber 8 and the equipment to be supplied with gas 15 through the gas outlet pipe 8282;

[0054] S4: Debug the switching mechanism to put it in the initial state;

[0055] S5: After the device is connected, gas supply begins;

[0056] S7: When the pressure of one of the gas supply cylinders 11 drops to a threshold, the switching mechanism automatically switches the gas supply cylinder 11 .

[0057] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the invention as claimed.

Claims

1. A fully automatic gas mixing device, characterized in that: include, An air supply mechanism, the air supply device comprising a first air supply member (1) and a second air supply member (2), wherein the first air supply member (1) and the second air supply member (2) respectively store a single gas to be mixed; A mixing mechanism, the mixing device comprising a mixed gas chamber (8), an air inlet pipe (81) and an air outlet pipe (82), one end of the air inlet pipe (81) being connected to the mixed gas chamber (8) and the other end being communicated with the air supply mechanism, one end of the air outlet pipe being connected to the mixed gas chamber (8), and the end of the air outlet pipe (82) being away from the mixed gas chamber (8) being connected to the device to be supplied with air (15); A switching mechanism is provided at one end of the air intake pipe (81) away from the mixed air chamber (8); the first air supply member (1) is provided with at least two air supply bottles (11); the switching mechanism comprises a switching seat (22) and a sliding plate (23); the sliding plate (23) is slidably connected to the switching seat (22); at least two through-interfaces are provided on the sliding plate (23); the air supply bottles (11) are connected to the air intake pipe (81) through the through-interfaces; in an initial state, one of the air supply bottles (11) is connected to one of the through-interfaces; as the sliding plate (23) moves, the other air supply bottle (11) is connected to the air intake pipe (81) through the other through-interface, thereby realizing automatic switching of the air supply bottles (11).

2. A fully automatic gas mixing device according to claim 1, characterized in that: The air intake pipe (81) comprises a first pipe (811) and a second pipe (812); the first pipe (811) is provided with a first interface (18), the first interface (18) being used to connect the first air supply member (1) and the mixed air chamber (8); the second pipe (812) is provided with a second interface (19), the second pipe (812) being used to connect the second air supply member (2) and the mixed air chamber (8).

3. A fully automatic gas mixing device according to claim 2, characterized in that: The first pipe (811) is provided with a first solenoid valve (3), the second pipe (812) is provided with a second solenoid valve (4), and the air outlet pipe is provided with a third solenoid valve (11). The first solenoid valve (3), the second solenoid valve (4) and the third solenoid valve (11) are all used to control the opening and closing of the corresponding pipes.

4. A fully automatic gas mixing device according to claim 3, characterized in that: The air inlet pipe (81) is provided with a first air pump (7), and the first air pump (7) is used to provide power for inputting gas into the mixed gas chamber (8). The air outlet pipe is provided with a second air pump (13), and the second air pump (13) is used to provide power for outputting the mixed gas to the gas supply device (15).

5. The fully automatic gas mixing device according to claim 4, characterized in that: The invention also includes a first mass flow meter (5) and a second mass flow meter (6), wherein the first mass flow meter (5) is arranged between the first solenoid valve (3) and the first air pump (7), the second mass flow meter (6) is arranged between the second solenoid valve (4) and the first air pump (7), and the third mass flow meter (12) is arranged between the third solenoid valve (11) and the second air pump (13). The first mass flow meter (5) is used to measure the flow rate of the input single gas, and the second mass flow meter (6) is used to measure the flow rate of the output mixed gas.

6. A fully automatic gas mixing device according to claim 5, characterized in that: The mixed gas chamber (8) is provided with a pressure detection element, a temperature detection element and a gas agitator (16). The pressure detection element is used to detect and display the gas pressure in the mixed gas chamber (8), the temperature detection element is used to detect and display the temperature in the mixed gas chamber (8), and the gas agitator (16) is used to agitate multiple single gases to form a mixed gas.

7. The fully automatic gas mixing device according to claim 6, characterized in that: The switching mechanism further includes a matching baffle and a matching spring (26), one end of the matching spring (26) is connected to an inner wall of one side of the switching seat (22), and the other end of the matching spring (26) is fixedly connected to the matching baffle, and the matching baffle is slidably connected in the switching seat (22). In an initial state, one of the through interfaces on the sliding plate (23) is connected to one of the gas supply bottles (11), and the matching plate (25) is used to block the other gas supply bottle (11) and the air intake pipe (81). As the sliding plate (23) moves, the sliding plate (23) moves against the matching plate (25) and presses the matching spring (26) until the through interface on the sliding plate (23) is connected to the other gas supply bottle (11).

8. The fully automatic gas mixing device according to claim 7, characterized in that: The switching mechanism further comprises a switching motor (24), a switching rack (232) and a switching gear (241); the switching motor (24) is arranged on the outer wall of the switching seat (22); the switching gear (241) is coaxially connected to the output shaft end of the switching motor (24); the switching rack (232) is fixedly connected to the sliding plate (23); and the switching rack (232) is meshed with the switching gear (241).

9. The fully automatic gas mixing device according to claim 8, characterized in that: A pressure sensor is provided on the switching seat (22), and a pressure spring valve is provided at the mouth of the gas supply bottle (11). The pressure spring valve is used to detect the pressure in the gas supply bottle (11). The spring member in the pressure spring valve abuts against the pressure sensor. The pressure sensor is electrically connected to the switching motor (24). When the pressure sensor detects the pressure of the spring member, it sends a signal to the switching motor (24). After receiving the signal, the switching motor (24) runs to drive the sliding plate (23) to move.

10. A method for using a fully automatic gas mixing device, comprising the automatic gas mixing device according to claim 9, characterized in that: Here are the steps: S1: Installing a first air supply component (1) and a second air supply component (2); S2: connecting the first air supply member (1) and the mixed air chamber (8), and the second air supply member (2) and the mixed air chamber (8) via an air intake pipe (81); S3: Connecting the mixed gas chamber (8) and the gas supply equipment (15) through the gas outlet pipe; S4: Debug the switching mechanism to put it in the initial state; S5: After the device is connected, gas supply begins; S7: When the pressure of one of the gas supply bottles (11) drops to a threshold value, the switching mechanism automatically switches the gas supply bottle (11).

Images