A multi-component gas mixing system and method

Abstract

The application relates to a multi-component gas mixing system and a mixing method, and relates to the field of gas mixing equipment. The multi-component gas mixing system comprises a mixing tank, a floating plate is slidably arranged in the mixing tank, the floating plate divides the mixing tank into a gas mixing cavity and a balance cavity, a plurality of medium inlets and a gas mixing outlet are arranged at the bottom of the mixing tank, the gas mixing outlet and the plurality of medium inlets are in communication with the gas mixing cavity, a pressure regulating part is arranged on the mixing tank, and the pressure regulating part is used for adjusting the pressure balance between the gas mixing cavity and the balance cavity. The application can sufficiently mix different gases and improve the uniformity of gas mixing.

Description

Technical Field

[0001] This application relates to the field of gas mixing equipment, and in particular to a multi-component gas mixing system and mixing method. Background Technology

[0002] In industries such as industrial production, modern medicine, and food preservation, it is often necessary to mix two or more gases before use. For example, the binary, ternary, and quaternary gas mixtures required for industrial mixed gas shielded welding mainly use argon as the basic component, with one or more inert, reducing, and oxidizing gases added respectively.

[0003] When mixing different gases, a mixing tank is required. Existing mixing tanks mainly employ two methods: free mixing and stirred mixing. Free mixing involves introducing different gases into the mixing tank through different inlets, where they mix freely through diffusion. Because different gases have different densities, when they enter the mixing tank, the less dense gases rise to the top, while the denser gases sink to the bottom. Therefore, after the gases are introduced, the mixing tank needs to be rolled or shaken to ensure uniform mixing. However, this method is only suitable for small mixing tanks and therefore only for situations with small gas volumes; it is difficult to perform this operation on large mixing tanks. Secondly, this method results in a slow mixing speed and low mixing efficiency.

[0004] Therefore, gas mixing is often carried out in industry by stirring. Stirring requires the installation of stirring components in the mixing tank. Different gases are first introduced into the mixing tank through different inlets, and then the stirring components are driven by the power system to rotate in the mixing tank, thereby achieving stirring and mixing.

[0005] Compared to free mixing, stirring can increase the speed of gas mixing, but the installation of stirring components and power systems results in a larger overall size of the device, which occupies a lot of space. Secondly, the power needs to continuously supply energy to the stirring components during rotation, which consumes a lot of energy. In addition, the stirring components cannot stir the gas in the corners during rotation, and the gas at the bottom and top of the mixing tank is difficult to mix together, resulting in insufficient and uneven mixing. Summary of the Invention

[0006] To address the problems existing in the above-mentioned technologies, this application provides a multi-element gas mixing system.

[0007] The multi-component gas mixing system provided in this application adopts the following technical solution:

[0008] A multi-gas mixing system includes a mixing tank, in which a float is slidably disposed, dividing the mixing tank into a mixing chamber and a balancing chamber. The bottom of the mixing tank has multiple medium inlets and a mixing outlet, and the mixing outlet and the multiple medium inlets are all connected to the mixing chamber. A pressure regulating component is provided on the mixing tank to adjust the pressure balance between the mixing chamber and the balancing chamber.

[0009] By adopting the above technical solution, the initial position of the float is located at the bottom of the mixing tank, and the space of the mixing chamber is compressed. When using the mixing tank for gas mixing, different gases are introduced into the mixing chamber through different medium inlets. The different gases diffuse and mix within the mixing chamber. As gas is continuously introduced, it pushes the float upward, causing the volume of the mixing chamber to continuously expand and the volume of the balance chamber to decrease. The adjusting component adjusts the pressure of the mixing chamber and the balance chamber during this process, allowing the float to move normally. After the gas mixing is completed, the mixed gas can be extracted through the mixing outlet. Through the above setting, the volume of the mixing chamber can change with the volume of the introduced gas, avoiding the situation where, due to the large space inside the mixing tank, the less dense gas rises to the top of the mixing tank while the more dense gas sinks to the bottom, resulting in the gas at the bottom and top of the mixing tank being difficult to mix together. This ensures that different gases are fully mixed, improving the uniformity of gas mixing.

[0010] Optionally, the top of the mixing tank is provided with an exhaust port and an air inlet. The pressure regulating component includes an exhaust pipe communicating with the exhaust port and an air inlet communicating with the air inlet. A first one-way valve is provided on the exhaust pipe, and a second one-way valve is provided on the air inlet. The first one-way valve and the second one-way valve allow airflow in opposite directions.

[0011] By adopting the above technical solution, when using a mixing tank for gas mixing, the first one-way valve connects the exhaust pipe to the outside, while the second one-way valve closes the intake pipe, connecting the balance chamber to the outside. Gas in the balance chamber can be discharged to the outside through the exhaust pipe. When different gases enter the mixing chamber and push the float to move, the gas in the balance chamber is discharged to the outside through the exhaust pipe, thus ensuring pressure balance between the balance chamber and the mixing chamber. When the mixed gas needs to be extracted after mixing, the second one-way valve connects the intake pipe to the outside, while the first one-way valve closes the exhaust pipe. Outside gas can enter the balance chamber through the intake pipe. At this time, the mixed gas is extracted through the mixing outlet, and the float will move down to its initial position. During this process, outside gas enters the balance chamber through the intake pipe, ensuring pressure balance between the balance chamber and the mixing chamber. Through the above settings, the pressure in the balance chamber and the mixing chamber can always be balanced during gas entry and gas discharge, thus allowing the float to move and reset normally.

[0012] Optionally, a control block is provided at the top of the mixing tank, and a flexible button is provided on the float plate. The flexible button is located directly below the control block, and the switch of the flexible button is used to control the opening and closing of multiple media inlets.

[0013] By adopting the above technical solution, during the process of gas being introduced into the mixing tank, the float plate moves upward continuously. The movement of the float plate causes the elastic button to move. When the elastic button moves to contact the control block, as the float plate continues to move, the control block will press the elastic button. After the elastic button is pressed, the control medium inlet is closed, thereby controlling the gas supply and preventing the gas from continuously flowing in, which could lead to excessive pressure in the mixing tank and pose a safety hazard.

[0014] Optionally, the float plate is provided with a placement slot for placing the elastic button, and the placement slot is in communication with the balance chamber; when the float plate moves to the point where the control block is inserted into the placement slot, the control block closes the placement slot and the float plate abuts against the top of the mixing tank.

[0015] By adopting the above technical solution, when the float moves to the point where the control block presses the elastic button, the control block will close the placement slot, and the float will abut against the top of the mixing tank. The space inside the balance chamber will be compressed to a minimum, thereby maximizing the utilization of the space in the mixing chamber.

[0016] Optionally, a guide groove is provided inside the mixing tank along the moving direction of the float, and the end of the float is located in the guide groove and slides in cooperation with the guide groove.

[0017] By adopting the above technical solution, the movement of the float is guided by the guide groove of the guide block, thus ensuring the stability of the float movement process.

[0018] Optionally, a rotating shaft is rotatably connected to the float plate, a fixing block is provided at the bottom of the mixing tank, the fixing block has a slot and a receiving cavity communicating with the slot, the rotating shaft is inserted into the slot, and the outer side wall of the rotating shaft fits against the inner side wall of the slot; a receiving groove is provided on the rotating shaft, a first stirring blade is hinged to the receiving groove, a second stirring blade is hinged to the end of the first stirring blade, a slider is hinged to the second stirring blade, the slider is slidably connected to the rotating shaft along the length direction of the rotating shaft, and a driving member for driving the slider to slide is provided on the rotating shaft.

[0019] By adopting the above technical solution, the rotating shaft is inserted into the slot and can rotate in the slot. When the float is in the initial position, part of the rotating shaft is located in the receiving cavity. As the gas pushes the float to move, the rotating shaft moves with the float until it gradually moves out of the receiving cavity. When the first and second stirring blades move to the mixing cavity with the rotating shaft, the driving component drives the slider to slide, thereby causing the end of the second stirring blade to slide. This allows the first and second stirring blades to unfold. At this time, the first and second stirring blades rotate due to the disordered airflow fluctuations. During the rotation of the first and second stirring blades, the gas is stirred and mixed, causing the gas to disperse and mix disorderly, further improving the uniformity and speed of gas mixing.

[0020] Optionally, the rotating shaft includes multiple movable shafts connected end to end in sequence, with two movable shafts connected by a hinge. The movable shaft is rotatably connected to the hinge. One end of one of the movable shafts is rotatably connected to the float plate, and a stabilizing block is rotatably connected to the end of another movable shaft. When the float plate moves to abut against the top of the mixing tank, the stabilizing block is inserted into the slot. Each movable shaft is provided with the receiving groove and the driving component.

[0021] By adopting the above technical solution, when the float is in the initial position, multiple movable shafts and hinges are located in the receiving cavity. Due to the presence of the hinges, the two adjacent movable shafts are in a bent state rather than a vertical state, thus reducing the space required for the receiving cavity and further reducing the overall volume of the system. When the float moves to abut against the top of the mixing tank, the stabilizing block is inserted into the slot and can rotate in the slot. The stabilizing block improves the stability of the movable shaft rotation process.

[0022] Optionally, a plurality of balls are circulated within the receiving cavity.

[0023] By adopting the above technical solution, when the gas is mixed, during the process of the float plate resetting, the movable shaft will be pushed to move into the receiving cavity, so that the movable shaft returns to the receiving cavity; since multiple movable shafts are connected to each other through hinges, when the movable shaft moves to contact the ball and continues to move, the movable shaft pushes the ball to roll, and the rolling ball can push the movable shaft to move, thus avoiding the situation where the movable shaft gets stuck.

[0024] Optionally, the stabilizing block is embedded with balls, and when the float moves to abut against the top of the mixing tank, the balls contact the inner wall of the slot.

[0025] By adopting the above technical solution, when the stabilizing block is inserted into the slot and rotates, the ball contacts the inner wall of the slot, thereby reducing the friction at the contact point between the stabilizing block and the slot, improving the flexibility of the rotating process of the movable shaft, and further improving the flexibility of the rotation of the first stirring blade and the second stirring blade.

[0026] This application also provides a method for mixing multiple gases, using the following technical solution:

[0027] S1: Close the gas mixing outlet and introduce different gases through multiple medium inlets. The gas enters the gas mixing chamber and pushes the float to move.

[0028] S2: After the gas is introduced, close multiple medium inlets and open the gas mixing outlet to extract the mixed gas from the gas mixing outlet.

[0029] S3: The float plate resets, closing the gas mixing outlet.

[0030] In summary, this application includes at least one of the following beneficial technical effects:

[0031] 1. The initial position of the float is at the bottom of the mixing tank, and the mixing chamber space is compressed. When using the mixing tank for gas mixing, different gases are introduced into the mixing chamber through different medium inlets. The different gases diffuse and mix within the mixing chamber. As gas is continuously added, it pushes the float upward, causing the volume of the mixing chamber to expand and the volume of the balance chamber to decrease. The adjusting component adjusts the pressure of the mixing chamber and the balance chamber during this process, allowing the float to move normally. After gas mixing is complete, the mixed gas can be extracted through the mixing outlet. Through the above settings, the volume of the mixing chamber can change with the volume of the introduced gas, avoiding the situation where, due to the large space inside the mixing tank, the less dense gas rises to the top of the mixing tank while the more dense gas sinks to the bottom, resulting in the gas at the bottom and top of the mixing tank being difficult to mix together. This ensures that different gases are fully mixed, improving the uniformity of gas mixing.

[0032] 2. During the process of gas being introduced into the mixing tank, the float plate moves upward continuously. The movement of the float plate causes the elastic button to move. When the elastic button moves to contact the control block, the control block will press the elastic button as the float plate continues to move. After the elastic button is pressed, the control medium inlet is closed, thereby controlling the gas supply and preventing the gas from continuously flowing in, which could lead to excessive pressure in the mixing tank and pose a safety hazard. Attached Figure Description

[0033] Figure 1 This is a method for mixing multiple gases as described in Embodiment 1 of this application;

[0034] Figure 2 yes Figure 1 The sectional view is mainly used to show the structure of the guide groove;

[0035] Figure 3 yes Figure 1 The sectional view is mainly used to show the structure at the contact point between the float and the guide groove;

[0036] Figure 4 yes Figure 3 Enlarged view of section A;

[0037] Figure 5 This is a method for mixing multiple gases as described in Embodiment 3 of this application;

[0038] Figure 6 yes Figure 5 A sectional view;

[0039] Figure 7 yes Figure 5 Enlarged view of section B;

[0040] Figure 8 yes Figure 5 Enlarged view of section C;

[0041] Figure 9 yes Figure 5 Enlarged view of section D.

[0042] Explanation of reference numerals in the attached drawings: 1. Mixing tank; 2. Float; 3. Mixing chamber; 4. Balance chamber; 5. Medium inlet; 6. Mixing outlet; 7. Pressure regulating component; 71. Exhaust pipe; 72. First one-way valve; 73. Inlet pipe; 74. Second one-way valve; 8. Inlet; 9. Control block; 10. Resilient button; 11. Placement slot; 12. Guide slot; 13. Rotating shaft; 131. Movable shaft; 132. Hinge; 1321. First ear plate; 1322. Second... 14. Ear plate; 15. Fixing block; 16. Slot; 17. Receiving cavity; 18. Receiving groove; 19. First stirring blade; 20. Second stirring blade; 21. Slider; 22. Slide groove; 22. Drive component; 221. Telescopic spring; 23. Stabilizing block; 24. Ball bearing; 25. Air inlet pipe; 26. First electric control valve; 27. Air outlet pipe; 28. Second electric control valve; 29. ​​Rubber pad; 30. Placement cavity; 31. Support spring; 32. Push seat; 33. Exhaust port. Detailed Implementation

[0043] The following is in conjunction with the appendix Figure 1-9 This application will be described in further detail.

[0044] Example 1

[0045] Embodiment 1 of this application discloses a multi-component gas mixing system. (Refer to...) Figure 1 and Figure 2 The multi-gas mixing system includes a mixing tank 1, with a float 2 slidingly mounted inside the mixing tank 1. The float 2 divides the mixing tank 1 into a mixing chamber 3 and a balancing chamber 4. The bottom of the mixing tank 1 has multiple medium inlets 5 and a mixing outlet 6. The mixing outlet 6 and the multiple medium inlets 5 are all connected to the mixing chamber 3. A pressure regulating component 7 is installed on the mixing tank 1 to adjust the pressure balance between the mixing chamber 3 and the balancing chamber 4. Different gases are introduced into the mixing chamber 3 through different medium inlets 5. The different gases diffuse and mix within the mixing chamber 3. As the gas is continuously introduced, the float 2 moves upward, the volume of the mixing chamber 3 continuously expands, and the volume of the balancing chamber 4 decreases. The adjusting component adjusts the pressure between the mixing chamber 3 and the balancing chamber 4 during this process, allowing the float 2 to move normally.

[0046] Reference Figure 2 A guide groove 12 is provided inside the mixing tank 1, and the guide groove 12 is parallel to the axis of the mixing tank 1; refer to Figure 3 and Figure 4Rubber pads 29 are provided on both sides of the float plate 2. A placement cavity 30 is opened in the float plate 2. A support spring 31 is fixedly connected in the placement cavity 30. A push seat 32 is fixedly connected to the support spring 31. A ball bearing 24 is slidably mounted on the push seat 32. A through hole is opened on the float plate 2 for the end of the ball bearing 24 to pass through. The ball bearing 24 contacts the guide groove 12. The guide groove 12 guides the movement of the float plate 2. During the movement of the float plate 2, the support spring 31 pushes the push seat 32 to move, so that the ball bearing 24 contacts the guide groove 12. The float plate 2 is connected to the guide groove 12 through the ball bearing 24, thereby reducing the friction between the float plate 2 and the guide groove 12 during the movement, making the movement of the float plate 2 more flexible.

[0047] Reference Figure 2 and Figure 3 The mixing tank 1 has an exhaust port 33 and an air inlet 8 at its top. The pressure regulating component 7 includes an exhaust pipe 71 connected to the exhaust port 33 and an air inlet pipe 73 connected to the air inlet 8. A first one-way valve 72 is provided on the exhaust pipe 71, and a second one-way valve 74 is provided on the air inlet pipe 73. The airflow directions allowed by the first one-way valve 72 and the second one-way valve 74 are opposite. When the mixing tank 1 is used for gas mixing, the first one-way valve 72 connects the exhaust pipe 71 to the outside, and the second one-way valve 74 closes the air inlet pipe 73, connecting the balance chamber 4 to the outside. The gas in the balance chamber 4 can be discharged to the outside through the exhaust pipe 71. When different gases enter the mixing chamber 3 and push the float 2 to move, the gas in the balance chamber 4 is discharged to the outside through the exhaust pipe 71. The system ensures pressure balance between the balance chamber 4 and the mixing chamber 3. When the mixed gas needs to be extracted after mixing, the second one-way valve 74 connects the inlet pipe 73 to the outside, and the first one-way valve 72 closes the exhaust pipe 71. Outside gas can enter the balance chamber 4 through the inlet pipe 73. At this time, the mixed gas is extracted through the mixing outlet 6, and the float 2 will move down to its initial position. During this process, outside gas enters the balance chamber 4 through the inlet pipe 73, ensuring pressure balance between the balance chamber 4 and the mixing chamber 3. Through the above settings, the pressure in the balance chamber 4 and the mixing chamber 3 can always be balanced during the gas entry and gas exit processes, thus allowing the float 2 to move and reset normally.

[0048] Reference Figure 2 and Figure 3 Each medium inlet 5 is connected to an air inlet pipe 25, and each air inlet pipe 25 is equipped with a first solenoid valve 26. The switch of the first solenoid valve 26 is used to control the opening and closing of the air inlet pipe 25. The mixed gas outlet 6 is connected to an air outlet pipe 27, and the air outlet pipe 27 is equipped with a second solenoid valve 28. The switch of the second solenoid valve 28 is used to control the opening and closing of the air outlet pipe 27.

[0049] Reference Figure 2 and Figure 3A control block 9 is installed at the top of the mixing tank 1. A placement slot 11 for placing an elastic button 10 is opened on the float 2. The placement slot 11 is connected to the balance chamber 4. The elastic button 10 is located directly below the control block 9. When the float 2 moves to the point where the control block 9 is inserted into the placement slot 11, the control block 9 closes the placement slot 11. The rubber pad 29 on the float 2 abuts against the top of the mixing tank 1. At this time, the control block 9 presses the elastic button 10. The elastic button 10 closes the first solenoid valve 26 through electrical control, and closes the medium inlet 5, thereby controlling the gas flow and preventing the gas from continuously flowing in, which would cause the pressure inside the mixing tank 1 to be too high and pose a safety hazard.

[0050] The implementation principle of Example 1 is as follows: The initial position of the float plate 2 is located at the bottom of the mixing tank 1, and the space of the mixing chamber 3 is compressed. When using the mixing tank 1 for gas mixing, different gases are introduced into the mixing chamber 3 through different medium inlets 5. The different gases diffuse and mix within the mixing chamber 3. As the gas is continuously introduced, it pushes the float plate 2 upward, causing the volume of the mixing chamber 3 to continuously expand and the volume of the balance chamber 4 to decrease. The gas in the balance chamber 4 is discharged through the exhaust port 33. After the gas mixing is completed, the exhaust port 33 is closed and the air inlet 8 is opened, and the mixed gas is extracted through the mixing outlet 6. Through the above settings, the volume of the mixing chamber 3 can change with the volume of the introduced gas, avoiding the situation where, due to the large space inside the mixing tank 1, the less dense gas rises to the top of the mixing tank 1 while the more dense gas sinks to the bottom, making it difficult for the gases at the bottom and top of the mixing tank 1 to mix together. This allows for thorough mixing of different gases and improves the uniformity of gas mixing.

[0051] Example 2

[0052] This application, in embodiment 2, discloses a mixing method for the multi-component gas mixing system of embodiment 1, comprising the following steps;

[0053] S1: The mixing outlet 6 is closed by the second solenoid valve 28, the exhaust port 33 is opened by the first check valve 72, and multiple medium inlets 5 are opened by multiple first solenoid valves 26. Different gases are introduced into the multiple medium inlets 5 respectively, and the gas enters the mixing chamber 3 to push the float 2 to move.

[0054] S2: After the gas is introduced, multiple medium inlets 5 are closed by multiple first solenoid valves 26, exhaust port 33 is closed by the first check valve 72, air inlet 8 is opened by the second check valve 74, and mixed gas outlet 6 is opened by the second solenoid valve 28, so that the mixed gas is extracted from the mixed gas outlet 6.

[0055] S3: After the mixed gas is extracted, the float 2 resets and the mixed gas outlet 6 is closed by the second solenoid valve 28.

[0056] Example 3

[0057] The difference between Example 3 and Example 1 is that: (Refer to...) Figure 5 and Figure 6 Multiple movable shafts 131 are rotatably connected to the float 2, and the multiple movable shafts 131 are connected in pairs by hinges 132; see reference. Figure 7 and Figure 8 The hinge 132 includes a first ear plate 1321 and a second ear plate 1322, which are hinged together. The first ear plate 1321 is rotatably connected to a movable shaft 131, and the second ear plate 1322 is rotatably connected to another movable shaft 131. (Refer to...) Figure 6 and Figure 9 A stabilizing block 23 is rotatably connected to the end of a movable shaft 131 away from the float 2, and ball bearings 24 are embedded in the stabilizing block 23.

[0058] Reference Figure 6 and Figure 7 The bottom of the mixing tank 1 is provided with a fixing block 14, and the fixing block 14 is provided with a slot 15 and a receiving cavity 16 communicating with the slot 15. The slot 15 is provided with a chamfer. Multiple balls 24 are rolled in the receiving cavity 16. The movable shaft 131 and the stabilizing block 23 can be inserted into the slot 15 and rotate in the slot 15. When the movable shaft 131 is inserted into the slot 15, the outer side wall of the movable shaft 131 contacts the inner side wall of the slot 15. When the stabilizing block 23 is inserted into the slot 15, the balls 24 on the stabilizing block 23 contact the inner side wall of the slot 15.

[0059] Reference Figure 7 and Figure 8 The movable shaft 131 has a receiving groove 17, a first stirring blade 18 is hinged to the receiving groove 17, a second stirring blade 19 is hinged to the end of the first stirring blade 18, and a slider 20 is hinged to the second stirring blade 19; the movable shaft 131 has a sliding groove 21 along its length, the slider 20 is located in the sliding groove 21 and is slidably connected to the sliding groove 21, and a telescopic spring 221 is fixedly connected to the slider 20, and the telescopic spring 221 is fixed in the receiving groove 17.

[0060] In embodiment 3 of this application, the driving component 22 is a telescopic spring 221. In other embodiments, the driving component 22 can be a telescopic rod or a push rod, etc.

[0061] The implementation principle of Example 3 is as follows: When the float 2 is in the initial position, multiple movable shafts 131 and the stabilizing block 23 are located in the receiving cavity 16, and the two adjacent movable shafts 131 are in a bent state. After the gas is introduced into the mixing chamber 3, the gas pushes the float 2 to move, and the movable shafts 131 move with the float 2 until they are removed from the receiving cavity 16. When the movable shafts 131 move to the slot 15, the first stirring blade 18 and the second stirring blade 19 are pushed into the receiving groove 17. At this time, the telescopic spring 221 is in a compressed state. When the movable shaft 131 continues to move until the first stirring blade 18 and the second stirring blade 19 are located in the mixing chamber 3, the telescopic spring 221 pushes the slider 20 to slide in the slide groove 21, thereby causing the end of the second stirring blade 19 to slide, thus unfolding the first stirring blade 18 and the second stirring blade 19. At this time, the first stirring blade 18 and the second stirring blade 19 rotate due to the disordered airflow fluctuations. During the rotation of the first stirring blade 18 and the second stirring blade 19, the gas is stirred and mixed, causing the gas to disperse and mix again, further improving the uniformity and speed of gas mixing. When the gas is mixed, during the resetting process of the float 2, the movable shaft 131 will be pushed to move into the receiving cavity 16, so that the movable shaft 131 returns to the receiving cavity 16. Since the multiple movable shafts 131 are connected to each other through the first ear plate 1321 and the second ear plate 1322, when the movable shaft 131 moves to contact the ball 24 and continues to move, the movable shaft 131 pushes the ball 24 to roll. The rolling ball 24 can also push the movable shaft 131 to move, avoiding the situation where the movable shaft 131 gets stuck.

[0062] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A multi-element gas mixing system, characterized in that: The system includes a mixing tank (1), inside which a float plate (2) is slidably disposed. The float plate (2) divides the mixing tank (1) into a mixing chamber (3) and a balancing chamber (4). Multiple medium inlets (5) and a mixing outlet (6) are provided at the bottom of the mixing tank (1). The mixing outlet (6) and the multiple medium inlets (5) are all connected to the mixing chamber (3). A pressure regulating component (7) is provided on the mixing tank (1) to adjust the pressure balance between the mixing chamber (3) and the balancing chamber (4). A rotating shaft (13) is rotatably connected to the float plate (2). A fixing block (14) is provided at the bottom of the mixing tank (1), and a slot is provided on the fixing block (14). 15) and a receiving cavity (16) communicating with the slot (15), the rotating shaft (13) is inserted into the slot (15), the outer side wall of the rotating shaft (13) is in contact with the inner side wall of the slot (15); a receiving groove (17) is provided on the rotating shaft (13), a first stirring blade (18) is hinged on the receiving groove (17), a second stirring blade (19) is hinged at the end of the first stirring blade (18), a slider (20) is hinged on the second stirring blade (19), the slider (20) is slidably connected to the rotating shaft (13) along the length direction of the rotating shaft (13), and a driving member (22) for driving the slider (20) to slide is provided on the rotating shaft (13).

2. The multi-element gas mixing system according to claim 1, characterized in that: The mixing tank (1) has an exhaust port (33) and an air inlet (8) at the top. The pressure regulating component (7) includes an exhaust pipe (71) connected to the exhaust port (33) and an air inlet pipe (73) connected to the air inlet (8). A first one-way valve (72) is provided on the exhaust pipe (71), and a second one-way valve (74) is provided on the air inlet pipe (73). The first one-way valve (72) and the second one-way valve (74) allow airflow in opposite directions.

3. The multi-element gas mixing system according to claim 1, characterized in that: A control block (9) is provided on the top of the mixing tank (1), and an elastic button (10) is provided on the float plate (2). The elastic button (10) is located directly below the control block (9), and the switch of the elastic button (10) is used to control the opening and closing of multiple media inlets (5).

4. The multi-element gas mixing system according to claim 3, characterized in that: The float (2) has a placement slot (11) for placing the elastic button (10), and the placement slot (11) is connected to the balance chamber (4); when the float (2) moves to the point where the control block (9) is inserted into the placement slot (11), the control block (9) closes the placement slot (11) and the float (2) abuts against the top of the mixing tank (1).

5. The multi-element gas mixing system according to claim 1, characterized in that: The mixing tank (1) has a guide groove (12) inside it along the moving direction of the float (2), and the end of the float (2) is located in the guide groove (12) and slides in cooperation with the guide groove (12).

6. The multi-element gas mixing system according to claim 1, characterized in that: The rotating shaft (13) includes a plurality of movable shafts (131) connected end to end in sequence. Two movable shafts (131) are connected by a hinge (132). The movable shaft (131) and the hinge (132) are rotatably connected. One end of one of the movable shafts (131) is rotatably connected to the float (2). A stabilizing block (23) is rotatably connected to the end of one of the movable shafts (131). When the float (2) moves to abut against the top of the mixing tank (1), the stabilizing block (23) is inserted into the slot (15). Each movable shaft (131) is provided with the receiving groove (17) and the driving member (22).

7. A multi-element gas mixing system according to claim 6, characterized in that: Multiple balls (24) are tumbling inside the receiving cavity (16).

8. A multi-element gas mixing system according to claim 6, characterized in that: The stabilizing block (23) is embedded with ball bearings (24). When the float (2) moves to abut against the top of the mixing tank (1), the ball bearings (24) contact the inner wall of the slot (15).

9. A method for mixing multiple gases, using the multiple gas mixing system according to any one of claims 1-8, characterized in that, Includes the following steps: S1: Close the gas mixing outlet (6), and introduce different gases through multiple medium inlets (5). The gas enters the gas mixing chamber (3) and pushes the float (2) to move. S2: After the gas is introduced, close multiple medium inlets (5) and open the gas mixing outlet (6) to extract the mixed gas from the gas mixing outlet (6); S3: The float (2) is reset, and the gas mixing outlet (6) is closed.

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