Gas mixing device

Abstract

The utility model relates to a gas mixing device applied to the field of gas mixing devices, which comprises a plurality of gas transmission sources, the right ends of the gas transmission sources are fixedly connected with transmission pipelines, the plurality of transmission pipelines are connected with a gas storage tank, the left side of the upper end of the gas storage tank is provided with a safety valve, and the right side of the upper end of the gas storage tank is provided with a pressure gauge. A ball valve is arranged on the left side outside the conveying pipeline, a filter located on the right side of the ball valve is arranged on the outer side of the conveying pipeline, a gas flow meter located on the right side of the filter is arranged on the outer side of the conveying pipeline, and a one-way valve is arranged between the conveying pipeline and the gas storage tank. The gas mixing device is suitable for the fields of laboratories, industrial production and the like with high requirements on gas mixing precision and safety, a plurality of gas transmission sources connect gas into the gas storage tank through the conveying pipeline, the gas is mixed according to a preset proportion and then is conveyed to experimental equipment through the gas outlet, and the experimental atmosphere requirement is met.

Description

Technical Field

[0001] This utility model relates to a mixing device, and more particularly to a gas mixing device applied in the field of gas mixing devices. Background Technology

[0002] A gas mixing device is a apparatus used to mix two or more gases in a specific ratio. It is widely used in laboratory research, industrial production, medical equipment, environmental protection, and other fields. Its main function is to generate a gas mixture that meets specific experimental or process requirements by precisely controlling the flow rate and ratio of various gases.

[0003] Chinese patent CN217795986U discloses a gas mixing device, including a main body and an oxygen chamber, a mixing chamber, and at least two nitrogen chambers located on the main body. The oxygen chamber and the at least two nitrogen chambers are respectively connected to the mixing chamber. An oxygen valve is provided on the oxygen chamber, and a nitrogen valve is provided on each nitrogen chamber. Compared with the prior art, this utility model can obtain mixed gases with different oxygen concentrations through the combination of opening or closing options between the oxygen valve and multiple nitrogen valves, realizing accurate control and precise and flexible switching between low-oxygen gas and high-oxygen gas, which can flexibly adapt to different user needs and improve the user experience.

[0004] To address the gas leakage problem, some improvement solutions have been proposed in the existing technology, such as adding sealing gaskets at pipe connections or using a double-walled structure to improve sealing performance. However, these solutions can only delay the occurrence of leakage and cannot fundamentally solve the problem of gas handling after leakage. In particular, during maintenance, traditional equipment lacks an effective concentration dissipation mechanism, which causes residual gas to accumulate in the double-walled structure, increasing the exposure risk to operators. Utility Model Content

[0005] The technical problem this utility model aims to solve in response to the above-mentioned prior art is the problem of gas leakage. Some improvement solutions have been proposed in the prior art, such as adding sealing gaskets at pipe connections or using a double-layer sleeve structure to improve sealing performance. However, these solutions can only delay the occurrence of leakage and cannot fundamentally solve the problem of gas treatment after leakage. In particular, during maintenance, traditional devices lack an effective concentration dissipation mechanism, which leads to the accumulation of residual gas in the double-layer sleeve, increasing the exposure risk to operators.

[0006] To address the aforementioned problems, this utility model provides a gas mixing device, comprising multiple gas supply sources. A delivery pipe is fixedly connected to the right end of each gas supply source. Multiple delivery pipes are connected to a gas storage tank. A safety valve is installed on the upper left side of the gas storage tank, and a pressure gauge is installed on the upper right side of the gas storage tank. A ball valve is installed on the outer left side of each delivery pipe. A filter is installed on the outer side of the delivery pipe to the right of the ball valve, and a gas flow meter is installed on the outer side of the delivery pipe to the right of the filter. A one-way valve is installed between the delivery pipe and the gas storage tank. A sealing outer sleeve is installed at the connection point of the delivery pipe. An electric guide fan is fixedly connected to the lower end of the sealing outer sleeve, and a filter pipe is fixedly connected to the upper end of the sealing outer sleeve. A gas detection sensor is fixedly connected to the front inner wall of the sealing outer sleeve.

[0007] In the above-mentioned gas mixing device, this gas mixing device is specially designed for low-pressure and low-flow scenarios. It is suitable for fields such as laboratories and industrial production where the gas mixing accuracy and safety requirements are high. Multiple gas supply sources connect the gas to the gas storage tank through the delivery pipeline. After mixing according to the preset ratio, the gas is delivered to the experimental equipment through the gas outlet to meet the experimental atmosphere requirements.

[0008] As a further improvement of this application, an air supply pipe is fixedly connected to the end of the filter pipe away from the sealing outer sleeve, and the electric guide fan is interconnected with the sealing outer sleeve.

[0009] As a further improvement to this application, an exhaust gas tank is connected to the outside of the gas pipeline, and a rotating shaft is connected to the right side of the inner end of the filter pipe.

[0010] As a further improvement of this application, a rotatable cylinder is rotatably connected to the outer side of the rotating shaft, and a multi-layer gas filter inner plate is provided at the inner end of the rotatable cylinder.

[0011] As another improvement of this application, the upper and lower ends of the rotatable cylinder are symmetrically provided with matching annular grooves, and the upper and lower inner walls of the filter pipe are symmetrically provided with sealing protruding rubber rings.

[0012] As a further improvement to this application, the two sealing protruding rubber rings respectively engage with the corresponding matching annular grooves, and the rotatable cylinder and the filter pipe engage with each other.

[0013] As a further improvement to this application, the connection between the electric guided fan, the filter duct, and the delivery duct is located on the same vertical plane.

[0014] In summary, this gas mixing device is specifically designed for low-pressure, low-flow scenarios and is suitable for laboratories, industrial production, and other fields with high requirements for gas mixing accuracy and safety. Multiple gas sources deliver gas to the storage tank via pipelines. After mixing according to a preset ratio, the mixture is delivered to experimental equipment through the outlet to meet the experimental atmosphere requirements. A sealed outer sleeve is installed at the pipeline connection, housing a high-sensitivity gas detection sensor that can monitor gas concentration in real time. In case of leakage, an audible and visual alarm is immediately triggered via the control terminal, and data is recorded. Simultaneously, the system automatically activates a low-power electric guide fan to purify the residual gas through a multi-layer composite gas filter plate before discharging it into the waste gas tank. The rotatable cylinder in the filter pipeline facilitates the replacement of the filter plate, and a sealing protrusion rubber ring and a matching annular groove ensure a tight seal. The device allows for the addition or removal of gas sources or adjustment of the storage tank capacity as needed. It adopts a modular design, making installation, disassembly, and maintenance simple and cost-effective, achieving high-precision mixing, intelligent protection, and convenient maintenance. Attached Figure Description

[0015] Figure 1 This is an isometric view of the mixing device according to the first embodiment of this application;

[0016] Figure 2 This is the first embodiment of the present application. Figure 1 Enlarged view of a partial section of the mixing device;

[0017] Figure 3 This is a flowchart of the mixing apparatus according to the first embodiment of this application;

[0018] Figure 4 This is a partial enlarged view of the conveying pipeline according to the first embodiment of this application;

[0019] Figure 5 This is an internal view of the sealing outer sleeve according to the first embodiment of this application;

[0020] Figure 6 This is an enlarged view of the filter pipe according to the second embodiment of this application;

[0021] Figure 7 This is an enlarged view of the electric guided fan according to the first embodiment of this application.

[0022] Explanation of the labels in the diagram:

[0023] 1. Gas source; 2. Delivery pipeline; 3. Ball valve; 4. Filter; 5. Gas flow meter; 6. Gas storage tank; 7. Pressure gauge; 8. Safety valve; 9. Check valve; 10. Sealing outer sleeve; 11. Gas detection sensor; 12. Electric guide fan; 13. Filter pipeline; 14. Gas delivery pipe; 15. Waste gas tank; 16. Shaft; 17. Rotatable cylinder; 18. Gas filter inner plate; 19. Matching annular groove; 20. Sealing raised rubber ring. Detailed Implementation

[0024] The two embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0025] First implementation method:

[0026] Figure 1-5 , Figure 7 A gas mixing device is shown, comprising multiple gas sources 1, a delivery pipe 2 fixedly connected to the right end of each gas source 1, a gas storage tank 6 connected to the multiple delivery pipes 2, a safety valve 8 installed on the upper left side of the gas storage tank 6, a pressure gauge 7 installed on the upper right side of the gas storage tank 6, a ball valve 3 installed on the outer left side of the delivery pipes 2, a filter 4 located to the right of the ball valve 3 installed on the outer side of the delivery pipes 2, a gas flow meter 5 located to the right of the filter 4 installed on the outer side of the delivery pipes 2, a one-way valve 9 installed between the delivery pipes 2 and the gas storage tank 6, a sealing sleeve 10 installed at the connection of the delivery pipes 2, an electric guide fan 12 fixedly connected to the lower end of the sealing sleeve 10, a filter pipe 13 fixedly connected to the upper end of the sealing sleeve 10, and a gas detection sensor 11 fixedly connected to the front inner wall of the sealing sleeve 10.

[0027] Figure 1-5 , Figure 7 The filter pipe 13 is shown to be fixedly connected to a gas supply pipe 14 at one end away from the sealing outer sleeve 10. The electric guide fan 12 is interconnected with the sealing outer sleeve 10. The gas supply pipe 14 is connected to an exhaust gas tank 15. The inner right end of the filter pipe 13 is connected to a rotating shaft 16. The outer side of the rotating shaft 16 is rotatably connected to a rotatable cylinder 17. The inner end of the rotatable cylinder 17 is provided with a multi-layer gas filter inner material plate 18. The rotatable cylinder 17 and the filter pipe 13 are mutually engaged and matched. The connection points of the electric guide fan 12, the filter pipe 13, and the conveying pipe 2 are located on the same vertical plane.

[0028] Figure 1-5 , Figure 7This solution is specifically designed for low-pressure, low-flow scenarios, supporting continuous supply of single or mixed gases. It is suitable for applications requiring high gas mixing accuracy and safety, such as laboratories and industrial production. Gas sources 1 are connected to a gas storage tank 6 via delivery pipes 2. The gases are mixed within the storage tank 6 according to preset volume ratios and finally delivered to the experimental equipment through the outlet to meet the required atmosphere ratio. A sealing outer sleeve 10 is installed at the connection of the delivery pipes 2. The sealing outer sleeve 10 integrates a gas detection sensor 11. When a gas leak occurs, the gas detection sensor 11 can detect the leak signal in real time and communicate with the external system. The control terminal issues an audible and visual alarm to remind staff to handle the situation promptly. Before staff arrive on site and take further action, the system can automatically start the electric guide fan 12 to discharge the residual gas inside the sealed outer sleeve 10 through the filter pipe 13 and the gas delivery pipe 14 to the waste gas tank 15 for safe collection. The filter pipe 13 is equipped with multi-layer gas filter plates 18, which can efficiently purify the residual gas and ensure that the concentration of the discharged gas meets safety standards, thereby ensuring safety during maintenance. In addition, the rotatable cylinder 17 in the filter pipe 13 is designed to be rotatable, making it easy to rotate out of the filter pipe 13 for inspection of its internal components. The gas filter inner plate 18 can be replaced or maintained. Through an integrated design that optimizes gas mixing, leak detection, emergency handling, and maintenance, it achieves multiple functions including high-precision mixing, intelligent leak protection, and convenient maintenance, significantly improving the overall performance and applicability of the gas mixing device. The gas detection sensor 11 uses a high-sensitivity sensor, capable of real-time monitoring of gas concentration changes and remote alarm and data recording via a control terminal. The electric guide fan 12 adopts a low-power design, enabling rapid startup in emergencies to ensure timely discharge of residual gas. The gas filter inner plate 18 within the filter pipe 13 employs a multi-layer composite structure, which can... The filter consists of an activated carbon layer, a molecular sieve layer, and a catalytic layer, which can effectively adsorb, filter, and decompose harmful gases, ensuring that the discharged gas meets environmental protection standards. The design of the rotatable cylinder 17 not only simplifies the replacement process of the filter material, but also ensures the sealing performance of the filter pipe 13 during the gas treatment process through the precise fit between the sealing protruding rubber ring 20 and the matching annular groove 19, avoiding the risk of secondary leakage. In addition, this solution can increase the number of gas supply sources 1 or adjust the capacity of the gas storage tank 6 according to actual needs to adapt to different scales of gas mixing requirements. The overall structure adopts a modular design, which is convenient for installation, disassembly, and maintenance, while reducing production and maintenance costs.

[0029] Second implementation method:

[0030] Figure 6A gas mixing device is shown. The upper and lower ends of the rotatable cylinder 17 are symmetrically provided with matching annular grooves 19. The upper and lower inner walls of the filter pipe 13 are symmetrically provided with sealing protruding rubber rings 20. The two sealing protruding rubber rings 20 are respectively engaged in the corresponding matching annular grooves 19. When the rotatable cylinder 17 is reset, the matching annular grooves 19 symmetrically provided at its upper and lower ends and the sealing protruding rubber rings 20 symmetrically provided in the inner wall of the filter pipe 13 engage with each other to form a reliable sealing structure, ensuring that the filter pipe 13 has excellent anti-leakage function during gas processing, and further improving the safety and reliability of the device.

[0031] In light of current practical needs, the above-described embodiments adopted in this application are not limited to these. Any changes made within the scope of knowledge possessed by those skilled in the art without departing from the concept of this application still fall within the protection scope of this utility model.

Claims

1. A gas mixing device, characterized by: The utility model provides a kind of gas supply device, including multiple gas supply sources (1), the right end of the gas supply source (1) is fixedly connected with conveying pipeline (2), multiple conveying pipeline (2) is connected with gas storage tank (6), the upper end left side of the gas storage tank (6) is provided with safety valve (8), the upper end right side of the gas storage tank (6) is provided with pressure gauge (7), the outer left side of conveying pipeline (2) is provided with ball valve (3), the outer side of conveying pipeline (2) is provided with filter (4) located in the right side of ball valve (3), the outer side of conveying pipeline (2) is provided with gas flowmeter (5) located in the right side of filter (4), one-way valve (9) is arranged between conveying pipeline (2) and gas storage tank (6), the junction of conveying pipeline (2) is provided with sealing outer sleeve (10), the lower end of the sealing outer sleeve (10) is fixedly connected with electric power guide fan (12), the upper end of the sealing outer sleeve (10) is fixedly connected with filter pipeline (13), the front inner wall of the sealing outer sleeve (10) is fixedly connected with gas detection inductor (11).

2. The gas mixing device of claim 1, wherein: The one end of the filter pipeline (13) away from the sealing outer sleeve (10) is fixedly connected with gas supply pipe (14), and the electric power guide fan (12) and the sealing outer sleeve (10) are in communication with each other.

3. A gas mixing device according to claim 2, wherein: The gas supply pipe (14) is connected with waste gas tank (15), and the inner end right side of the filter pipeline (13) is connected with rotating shaft (16).

4. A gas mixing device according to claim 3, wherein: The outer side of the rotating shaft (16) is rotatably connected with rotatable cylinder (17), and the inner end of the rotatable cylinder (17) is provided with multiple layers of gas filtering inner material plate (18).

5. A gas mixing device according to claim 4, wherein: Matching annular grooves (19) are symmetrically formed in the upper and lower ends of the rotatable cylinder (17), and sealing convex rubber rings (20) are symmetrically arranged on the inner walls of the filter pipeline (13).

6. A gas mixing device according to claim 5, wherein: Two sealing convex rubber rings (20) are respectively clamped into corresponding matching annular grooves (19), and the rotatable cylinder (17) and the filter pipeline (13) are clamped and matched with each other.

7. A gas mixing device according to claim 6, wherein: The junction of the electric power guide fan (12), the filter pipeline (13) and the conveying pipeline (2) is located in the same vertical plane.

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