A mixing system

Through the multi-stage mixing system and specific gas flow channel design, the pressure fluctuation problem caused by high-speed stirring is solved, and the uniformity and stability of gas mixing are achieved.

CN119158430BActive Publication Date: 2025-04-18SHANGHAI CRYSTAL KWONG SEMICON TECH CO LTD
View PDF 1 Cites 0 Cited by

Patent Information

Application Number
CN202411666844.X
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-11-21
Publication Date
2025-04-18
Estimated Expiration
2044-11-21

AI Technical Summary

Technical Problem

During the gas mixing process, the pressure fluctuations caused by the high-speed agitator affect the stability of the gas mixing ratio, which in turn affects the quality of the mixed gas and the stability of the product.

Method used

A multi-stage mixing system is adopted, including primary, secondary and final mixing tanks, which promotes preliminary mixing through an agitator. The gas flow channel and flow hole in the secondary mixing tank are designed to reduce pressure fluctuations, and the final mixing tank further stabilizes the mixed gas.

Benefits of technology

It effectively reduces pressure fluctuations during gas mixing, improves the uniformity and stability of gas mixing, and ensures the proportional accuracy and overall mass of the mixed gas.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN119158430B_ABST
    Figure CN119158430B_ABST
Patent Text Reader

Abstract

The present application relates to the technical field of gas mixing, and provides a mixing system, including: a feeding mechanism, a gas mixing mechanism, an opening and closing member, and a filter, wherein the feeding mechanism includes a plurality of raw material tanks, each of which is connected to a gas supply pipe; the gas mixing mechanism includes a primary mixing tank, a secondary mixing tank, and a final mixing tank connected in sequence, each gas supply pipe is connected to the primary mixing tank, the primary mixing tank includes a primary tank body and an agitator arranged on the primary tank body, and the primary tank body is connected to a plurality of gas pipes; a plurality of gas flow channels are arranged in the secondary mixing tank, and adjacent gas flow channels are connected to each other; the gas pipe corresponds to the gas flow channel one by one, and one end of the gas pipe is connected to the gas flow channel, and the final mixing tank is connected to an exhaust pipe; the opening and closing member is installed on the gas supply pipe, and is used to control the on and off between the raw material tank and the primary tank body. The present application can reduce the influence on the gas mixing ratio while promoting the full mixing of the gas.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The present application relates to the technical field of gas mixing, and in particular to a mixing system. Background Art

[0002] Mixing devices play a vital role in the specialty gas industry, especially in the fields of semiconductors, medical treatment and laboratories. They are mainly used to accurately mix two or more gases to form a mixed gas with a specific composition ratio. With the development of technology, while providing high-quality mixed gases, mixing devices must also improve the uniformity and stability of the mixed gases as much as possible, which is crucial to ensure the effectiveness of specialty gases in various application environments. The performance of the mixing device not only directly affects the quality of the final product, but also has a profound impact on production efficiency, product cost and environmental protection.

[0003] In the process of gas mixing in the mixing device, in order to achieve uniform mixing of the gas, the commonly used methods include mechanical stirring to increase the turbulence effect of the gas, so as to achieve a good mixing effect. Common gas stirring methods include but are not limited to cyclone separators, jet mixers, and laser oscillators. Cyclone separators separate gases through centrifugal force; jet mixers promote mixing with the help of high-speed gas impact; laser oscillators use laser excitation to generate tiny turbulence to achieve gas mixing. In addition, mechanical agitators are also a common means to fully mix the gas through physical stirring.

[0004] However, although the above method improves the gas mixing effect to a certain extent, it inevitably generates new problems in practical applications. For example, when using a high-speed agitator for stirring, although it can effectively improve the uniformity of gas mixing, it also causes pressure fluctuations in the mixing system, thereby causing fluctuations in the gas mixing ratio, and ultimately affecting the quality of the mixed gas and the stability of the product. Therefore, how to reduce the impact on the gas mixing ratio while promoting gas mixing is a key technical problem that needs to be solved urgently. Summary of the invention

[0005] In order to promote adequate mixing of gases while reducing the impact on the gas mixing ratio, the present application provides a mixing system.

[0006] The present application provides a mixing system, which adopts the following technical solution:

[0007] A mixing system, comprising:

[0008] The feeding mechanism comprises a plurality of raw material tanks, each of which is connected to an air supply pipe;

[0009] A gas mixing mechanism, comprising a primary mixing tank, a secondary mixing tank and a final mixing tank connected in sequence, wherein each of the gas supply pipes is connected to the primary mixing tank, the primary mixing tank comprises a primary tank body and a stirrer arranged on the primary tank body, and the primary tank body is connected to a plurality of gas delivery pipes; a plurality of gas flow channels are arranged in the secondary mixing tank, and adjacent gas flow channels are connected to each other; the gas delivery pipes correspond to the gas flow channels one by one, and one end of the gas delivery pipes is connected to the gas flow channel, and the final mixing tank is connected to an exhaust pipe;

[0010] A plurality of opening and closing members are provided, and the opening and closing members correspond to the air supply pipes one by one. The opening and closing members are installed on the air supply pipes to control the opening and closing between the raw material tank and the primary tank body;

[0011] A filter, one end of the exhaust pipe is connected to the filter.

[0012] By adopting the above technical solution, the gas provided by multiple raw material tanks enters the primary mixing tank through the gas supply pipe, and the agitator in the primary mixing tank can effectively promote the initial mixing of the gas in a short time. The mixed gas after preliminary mixing enters the secondary mixing tank through multiple gas pipes. The secondary buffer tank absorbs and balances the pressure fluctuations, and further mixes them evenly, and then flows to the final mixing tank, further reducing the pressure fluctuations and the impact of the pressure fluctuations on the gas mixing ratio, ensuring the uniformity and stability of the final mixed gas. The mixed gas in the final mixing tank can be discharged through the exhaust pipe. The opening and closing parts can accurately control the on and off of the gas supply pipes of each raw material tank to ensure that the gas is supplied on demand. The filter can remove impurities in the mixed gas to ensure the purity of the final gas.

[0013] Optionally, the stirrer includes a stirring rod and a power source, the stirring rod is located in the primary tank, and the power source is used to drive the stirring rod to rotate;

[0014] A plurality of air distribution pipes are arranged at intervals in the primary tank body, and the air distribution pipes include an air distribution main pipe and an air distribution branch pipe that are interconnected. A plurality of the air distribution branch pipes are arranged at intervals along the length direction of the air distribution main pipe, and one end of the air supply pipe is connected to the air distribution main pipe.

[0015] By adopting the above technical solution, the power source is used to drive the stirring tank to rotate, thereby enhancing the mixing effect of the gas in the primary tank body; multiple gas distribution pipes are arranged at intervals in the primary tank body, including interconnected gas distribution main pipes and gas distribution branch pipes, and multiple gas distribution branch pipes are arranged at intervals along the length direction of the gas distribution main pipe. One end of the gas supply pipe is connected to the gas distribution main pipe, which can make the gas enter the primary tank body more evenly and further improve the uniformity of gas mixing.

[0016] Optionally, the stirring rod is hollow, and an air outlet group is provided on the stirring rod, and a plurality of air outlet groups are arranged at intervals along the length direction of the stirring rod;

[0017] One end of the stirring rod is connected to a gas transfer device, and the gas transfer device includes a transfer gas cylinder and a connecting gas cylinder that are connected to each other; one end of the transfer gas cylinder is connected to the stirring rod, and the other end is sleeved outside the connecting gas cylinder and is rotatably connected to the connecting gas cylinder;

[0018] At least one of the air supply pipes is connected to the connecting air cylinder, and the power source is used to drive the transfer air cylinder to rotate.

[0019] By adopting the above technical solution, the hollow stirring rod and the gas outlet group enable the gas to be introduced into the stirring rod and ejected through the gas outlet group, thereby enhancing the turbulence effect of the gas during the stirring process, thereby further improving the uniformity of gas mixing. At the same time, the coordinated use of the gas transfer device and the stirring rod realizes the effective distribution of the gas without affecting the stirring function, ensuring the improvement of the mixing efficiency.

[0020] Optionally, a transmission gear is fixed on the cylinder section of the transfer cylinder located outside the primary tank body, and a driving gear is meshed on one side of the transmission gear;

[0021] The power source comprises a servo motor, and an output shaft of the servo motor is coaxially fixed with the driving gear.

[0022] By adopting the above technical solution, the output shaft of the servo motor is coaxially fixed with the driving gear and transmits power to the transfer cylinder through the transmission gear, thereby realizing stable rotation of the stirring rod.

[0023] Optionally, a plurality of isolation plates are fixed at intervals in the horizontal direction in the secondary mixing tank, the isolation plates divide the secondary mixing tank into a plurality of the gas flow channels, and the isolation plates are provided with a plurality of guide holes at intervals in the vertical direction.

[0024] By adopting the above technical solution, multiple isolation plates divide the secondary mixing tank into multiple gas flow channels, and multiple guide holes are opened on the isolation plates, which can effectively guide the gas to circulate in each gas flow channel, enhance the gas mixing effect, and reduce the pressure fluctuation in the mixing system, thereby improving the uniformity and stability of gas mixing.

[0025] Optionally, a guide plate is fixed at the bottom of each guide hole, and the guide plate is arranged at an angle; among multiple guide plates located on the same isolation plate, the inclination directions of two adjacent guide plates are opposite; among multiple guide plates located on different isolation plates, the inclination directions of two adjacent guide plates are the same.

[0026] By adopting the above technical solution, a guide plate is arranged at the bottom of the guide hole, and the guide plate is arranged at an angle. Among the multiple guide plates on the same isolation plate, the inclination directions of two adjacent guide plates are opposite, while among the multiple guide plates on different isolation plates, the inclination directions of two adjacent guide plates are the same, which further guides the gas flow direction, promotes the uniformity of gas mixing, reduces mixing dead corners, and enhances mixing efficiency.

[0027] Optionally, a heating assembly is disposed outside the secondary mixing tank, and the heating assembly includes a heat-insulating sleeve and a heating source disposed between the heat-insulating sleeve and the secondary mixing tank.

[0028] By adopting the above technical solution, the heating component arranged outside the secondary mixing tank can effectively maintain the temperature inside the tank stable, and increase the movement intensity of the gas molecules in the secondary mixing tank by heating, so that the mixed gas is further mixed with each other. The use of the insulation cover and the heating source not only ensures the effective transfer of heat, but also reduces energy loss and improves the energy efficiency ratio of the entire system.

[0029] Optionally, the heating source is specifically configured as a heating pipe, the heating pipe is spirally wound around the secondary mixing tank, and the heating pipe is connected to a heat exchanger;

[0030] The heat exchanger comprises an electric heating box and a heat exchange tube arranged in the electric heating box, one end of the heat exchange tube is provided with a heat transfer interface, and the other end is provided with a recovery interface; one end of the heating tube is connected to the heat transfer interface, and the other end is connected to the recovery interface;

[0031] The heating tube is provided with a driving source, and the driving source is used to drive the heat-conducting medium in the heating tube to flow.

[0032] By adopting the above technical solution, the heating pipe is spirally wound outside the secondary mixing tank, which can evenly heat the secondary mixing tank to ensure uniform temperature distribution; one end of the heating pipe is connected to the summer heat interface, and the other end is connected to the recovery interface. The heat transfer medium can circulate between the heating pipe and the heat exchange pipe through the drive source to achieve continuous heating of the heating pipe; the electric heating box can provide a stable heat source to ensure the reliability and safety of the heating process.

[0033] Optionally, the filter includes a filter tank and a primary filter layer, a drying filter layer and a dirt absorption filter layer which are sequentially arranged in the filter tank.

[0034] By adopting the above technical solution, the design of the filter tank can accommodate multiple layers of filter materials to ensure the gas purification effect, wherein the primary filter layer can remove large particle impurities and protect the subsequent filter layers; the drying filter layer can remove moisture from the gas to ensure the dryness of the gas; the pollution absorption filter layer can remove harmful substances in the gas to ensure the purity of the gas.

[0035] Optionally, an isolation mesh plate is provided between the primary filter layer and the drying filter layer, and an isolation mesh plate is also provided between the drying filter layer and the pollution suction filter layer, and the isolation mesh plate is wavy.

[0036] By adopting the above technical scheme, the isolation mesh plate set between the primary filter layer and the drying filter layer, as well as the isolation mesh plate set between the drying filter layer and the pollution absorption filter layer, can effectively prevent mutual interference between the filter layers and improve the filtering effect; the isolation mesh plate is designed in a wavy shape, which increases the complexity of the gas flow path and further improves the filtering accuracy and filtering efficiency.

[0037] In summary, the present application includes at least one of the following beneficial effects:

[0038] 1. The arrangement of the secondary mixing tank and the final mixing tank in the present application gradually reduces the pressure fluctuation in the system, enhances the uniformity of gas mixing, and reduces the influence of pressure fluctuation on the gas mixing ratio;

[0039] 2. The multiple gas flow channels and interconnected design provided in the secondary mixing tank in the present application can further promote the full mixing of gases and enhance the mixing effect;

[0040] 3. The setting of the filter in this application effectively filters impurities in the mixed gas without affecting the gas mixing, thereby improving the purity and quality of the final product. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a schematic diagram of the overall structure of the mixing system of the embodiment of the present application;

[0042] Figure 2 is a cross-sectional structural schematic diagram of a primary mixing tank in an embodiment of the present application;

[0043] Figure 3 is a schematic cross-sectional structural diagram of a secondary mixing tank in an embodiment of the present application;

[0044] Figure 4 is a schematic cross-sectional view of a filter in an embodiment of the present application;

[0045] Explanation of reference numerals: 1. feeding mechanism; 11. raw material tank; 12. air supply pipe; 2. gas mixing mechanism; 21. primary mixing tank; 211. primary tank body; 212. agitator; 2121. stirring rod; 2122. power source; 2123. transmission gear; 2124. driving gear; 2125. spoiler blade; 213. air supply pipe; 22. secondary mixing tank; 221. gas flow channel; 222. isolation plate; 2221. guide hole; 223. guide plate; 224. air supply pipe; 23. final mixing tank; 231. exhaust pipe; 24. air distribution pipe; 241. main air distribution pipe pipe; 242, gas distribution branch pipe; 243, air inlet pipe section; 25, stop valve; 3, opening and closing parts; 4, filter; 41, filter tank; 42, primary filter layer; 43, drying filter layer; 44, sewage suction filter layer; 45, isolation mesh plate; 46, outlet pipe; 5, gas transfer device; 51, transfer gas cylinder; 52, connecting gas cylinder; 6, heating component; 61, insulation sleeve; 62, heating pipe; 7, heat exchanger; 71, electric heating box; 72, heat exchange pipe; 721, heat transfer interface; 722, recovery interface; 8, driving source; 9, pressure regulating component; 91, pressure reducing valve; 92, pressure gauge; 10, temperature measuring meter. DETAILED DESCRIPTION

[0046] The following is combined with Figure 1-4 This application is described in further detail.

[0047] Reference Figure 1 The mixing system provided in the embodiment of the present application includes a feeding mechanism 1, a gas mixing mechanism 2, an opening and closing member 3 and a filter 4. Among them, the feeding mechanism 1 includes a plurality of raw material tanks 11, and the raw material tanks 11 store compressed gas raw materials to be mixed. Each raw material tank 11 is connected to a gas supply pipe 12, and each gas supply pipe 12 is installed with a pressure regulating assembly 9 and an opening and closing member 3. The pressure regulating assembly 9 includes a pressure reducing valve 91 and a pressure gauge 92 installed on the gas supply pipe 12 section, and the pressure gauge 92 is located between the pressure reducing valve 91 and the opening and closing member 3 to ensure accurate control of the pressure of the gas flow discharged from the gas supply pipe 12.

[0048] Reference Figure 1 and Figure 2 The gas mixing mechanism 2 includes a primary mixing tank 21, a secondary mixing tank 22 and a final mixing tank 23 which are connected in sequence. Each gas supply pipe 12 is connected to the primary mixing tank 21. The opening and closing component 3 is specifically configured as an opening and closing valve, through which the opening and closing valve can control the connection and disconnection between the raw material tank 11 and the primary mixing tank 21.

[0049] Reference Figure 2The primary tank body 211 includes a primary tank body 211 made of stainless steel and an agitator 212 disposed on the primary tank body 211. A plurality of air distribution pipes 24 are disposed in the primary tank body 211. The air distribution pipes 24 include an air distribution main pipe 241 and an air distribution branch pipe 242. The air distribution main pipe 241 is disposed in a vertical state in the primary tank body 211, and a plurality of air distribution branch pipes 242 are disposed at equal intervals along the length direction of the air distribution main pipe 241. The side of the air distribution main pipe 241 away from the air distribution branch pipe 242 is connected to an air intake pipe section 243. One end of the air intake pipe section 243 is passed through the outside of the primary tank body 211, and the air intake pipe section 243 is sealed and fixedly connected to the primary tank body 211. In this embodiment, the materials of the air distribution main pipe 241, the air distribution branch pipe 242 and the air intake pipe section 243 are all corrosion-resistant stainless steel materials.

[0050] Reference Figure 2 The stirrer 212 includes a stirring rod 2121 and a power source 2122. The stirring rod 2121 is located in the primary tank 211. The stirring rod 2121 adopts a hollow structure design. The stirring rod 2121 is provided with multiple groups of air outlet holes, and the multiple groups of air outlet holes are arranged at intervals along the length direction of the stirring rod 2121. In this embodiment, the stirring rod 2121 is specifically configured as a hollow cylinder, and the air outlet hole group includes multiple air outlet holes arranged at intervals along the axis of the stirring rod 2121. A plurality of spoiler blades 2125 are also fixed on the outer wall of the stirring rod 2121. In other embodiments, the spoiler blades 2125 may not be provided.

[0051] Reference Figure 2 The top end of the stirring rod 2121 is connected to a gas transfer device 5, and the gas transfer device 5 includes a transfer gas cylinder 51 and a connecting gas cylinder 52 that are connected to each other. One end of the transfer gas cylinder 51 is fixedly connected to the stirring rod 2121, and the other end passes through the primary mixing tank 21, is sleeved outside the connecting gas cylinder 52 and is rotatably connected to the connecting gas cylinder 52. A sealing ring is installed at the connection between the connecting gas cylinder 52 and the transfer gas cylinder 51 to ensure the air tightness of the connection. The transfer gas cylinder 51 is rotatably connected to the primary tank body 211 through a bearing, and the end of the connecting gas cylinder 52 away from the transfer gas cylinder 51 is closed. The closed end of the connecting gas cylinder 52 is fixedly connected to the primary tank body 211 through a bracket.

[0052] Reference Figure 2 A transmission gear 2123 is coaxially fixed to the cylinder section of the transfer cylinder 51 outside the primary tank body 211, and a driving gear 2124 is meshed on one side of the transmission gear 2123. The power source 2122 is specifically configured as a servo motor, which is fixed to the primary tank body 211 through a bracket, and the output shaft of the servo motor is coaxially fixed to the driving gear 2124. When the servo motor is started, the transfer cylinder 51 can be driven to rotate, thereby driving the stirring rod 2121 to perform a flow disturbance action.

[0053] When in use, at least one air supply pipe 12 is connected to the connecting air cylinder 52, thereby indirectly realizing the connection between the air supply pipe 12 and the primary tank body 211, and the remaining air supply pipes 12 are connected to the air inlet pipe sections 243 one by one. Figure 1 and Figure 2 In this embodiment, three raw material tanks 11 are specifically provided, and three gas supply pipes 12 are also provided accordingly; one gas supply pipe 12 is connected to the connecting gas cylinder 52, and the other two gas supply pipes 12 are connected to the air inlet pipe section 243. When the opening and closing valve is opened, the gas raw material in one raw material tank 11 flows along the gas supply pipe 12 through the gas transfer device 5 and the stirring rod 2121 in sequence, and then flows into the primary tank body 211 along the gas outlet. In addition, the gas in the raw material tank 11 enters the gas distribution main pipe 241 through the air inlet pipe section 243, and then enters the primary tank body 211 along multiple gas distribution branch pipes 242.

[0054] Reference Figure 1 The bottom of the primary tank body 211 is connected to multiple gas pipes 213, and the gas pipes 213 are connected to the secondary mixing tank 22; each gas pipe 213 is installed with a stop valve 25. When the multiple gas raw materials are preliminarily mixed in the primary mixing tank 21, the stop valve 25 can be opened to allow the mixed gas to enter the secondary mixing tank 22.

[0055] Reference Figure 1 and Figure 3 The secondary mixing tank 22 is specifically configured as a hollow rectangular body, and a plurality of isolation plates 222 are fixed at intervals in the horizontal direction inside the secondary mixing tank 22, and the isolation plates 222 divide the tank body into a plurality of gas flow channels 221. In the present embodiment, two isolation plates 222 are specifically provided to separate the three gas flow channels 221. The gas delivery pipe 213 corresponds to the gas flow channels 221 one by one, and the end of the gas delivery pipe 213 away from the primary tank body 211 is connected to the gas flow channel 221. A plurality of guide holes 2221 are evenly spaced in the vertical direction on each isolation plate 222, and a guide plate 223 is fixed at the bottom of the guide hole 2221; the guide plate 223 extends in a direction away from the isolation plate 222, and the guide plate 223 is arranged at an angle. In the plurality of guide plates 223 connected to the same isolation plate 222, the inclination directions of adjacent guide plates 223 are opposite. In the plurality of guide plates 223 connected to different isolation plates 222, the inclination directions of adjacent guide plates 223 are the same. Both the isolation plates 222 and the guide plates 223 are made of corrosion-resistant stainless steel, and the inclination angle of the guide plates 223 is between 10° and 30°. In this embodiment, four guide holes 2221 are opened on one isolation plate 222.

[0056] When the mixed gas enters the gas flow channel 221 along the gas pipe 213 and flows from top to bottom in the secondary mixing tank 22, the mixed gas can circulate in the three gas flow channels 221 under the action of the guide plate 223 and the guide hole 2221, and further mix in the secondary mixing tank 22, thereby enhancing the gas mixing effect and reducing the pressure fluctuation in the mixing system during the flow process.

[0057] Reference Figure 1 and Figure 3 A heating assembly 6 is arranged outside the secondary mixing tank 22, and the heating assembly 6 includes a heat preservation sleeve 61 and a heating source. The heating source is specifically configured as a heating tube 62, and a heat-conducting medium is filled in the heating tube 62. The heat preservation sleeve 61 is arranged outside the secondary mixing tank 22 and is fixedly connected to the outer wall of the secondary mixing tank 22. The heating tube 62 is spirally wound around the outside of the secondary mixing tank 22, and the heating tube 62 is located between the heat preservation sleeve 61 and the secondary mixing tank 22. Both ends of the heating tube 62 pass through the heat preservation sleeve 61. The heating tube 62 is connected to a heat exchanger 7. The heat exchanger 7 includes an electric heating box 71 and a heat exchange tube 72 arranged in the electric heating box 71, and both ends of the heat exchange tube 72 are located outside the electric heating box 71; a heat transfer interface 721 is fixed at one end of the heat exchange tube 72, and a recovery interface 722 is fixed at the other end. One end of the heating tube 62 is connected to the heat transfer interface 721, and the other end is connected to the recovery interface 722; a driving source 8 is provided on the heating tube 62. In this embodiment, water is selected as the heat transfer medium, and the driving source 8 is specifically configured as a water pump. Starting the water pump can drive the heat transfer medium to circulate between the heating tube 62 and the heat exchange tube 72, thereby continuously supplying heat to the secondary mixing tank 22. A thermometer 10 is also installed at one end of the heating tube 62 connected to the heat transfer interface 721, and the temperature of the heat transfer medium output from the heat exchange tube 72 to the heating tube 62 can be monitored in real time through the thermometer 10, thereby controlling the heating power of the electric heating box 71 and realizing the quota temperature control of the secondary mixing tank 22.

[0058] Reference Figure 1 and Figure 4 , the bottom of the secondary mixing tank 22 is connected with a transport pipe 224, and one end of the transport pipe 224 is connected with the final mixing tank 23. The upper end of the final mixing tank 23 is connected with an exhaust pipe 231, and one end of the exhaust pipe 231 is connected with the filter 4. Finally, it is ensured that the mixed gas is filtered before being discharged. The filter 4 includes a filter tank 41 and a primary filter layer 42, a drying filter layer 43 and a suction filter layer 44 arranged in the tank body from top to bottom. An isolation mesh plate 45 is arranged between the primary filter layer 42 and the drying filter layer 43, between the drying filter layer 43 and the suction filter layer 44, and at the bottom of the suction filter layer 44. The isolation mesh plate 45 located at the bottom is fixedly connected to the inner wall of the filter tank 41. The isolation mesh plate 45 is wavy, which further improves the filtering effect. The bottom of the filter tank 41 is also connected with an outlet pipe 46, and the mixed gas filtered by the filter 4 can be discharged along the outlet pipe 46.

[0059] In this embodiment, the primary filter layer 42 is filled with glass fiber, the drying filter layer 43 is filled with desiccant, and the dirt-absorbing filter layer 44 is filled with activated carbon.

[0060] The implementation principle of this embodiment is: a gas mixing mechanism 2 is used to achieve multi-stage mixing processing, which effectively reduces the pressure fluctuation during the gas mixing process while promoting full mixing of the gas, thereby ensuring the ratio accuracy and overall quality of the mixed gas to the greatest extent, and improving the reliability and practicality of the mixing system.

[0061] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A mixing system, characterized in that: include: A feeding mechanism (1) comprises a plurality of raw material tanks (11), each of the raw material tanks (11) being connected to an air supply pipe (12); A gas mixing mechanism (2), comprising a primary mixing tank (21), a secondary mixing tank (22) and a final mixing tank (23) which are connected in sequence, wherein each of the gas supply pipes (12) is connected to the primary mixing tank (21), the primary mixing tank (21) comprises a primary tank body (211) and a stirrer (212) arranged on the primary tank body (211), and the primary tank body (211) is connected to a plurality of gas delivery pipes (213); a plurality of gas flow channels (221) are arranged in the secondary mixing tank (22), and adjacent gas flow channels (221) are connected to each other; the gas delivery pipes (213) correspond to the gas flow channels (221) in a one-to-one manner, and one end of the gas delivery pipe (213) is connected to the gas flow channel (221); and the final mixing tank (23) is connected to an exhaust pipe (231); A plurality of opening and closing members (3) are provided, and the opening and closing members (3) correspond to the air supply pipes (12) one by one. The opening and closing members (3) are installed on the air supply pipes (12) and are used to control the opening and closing between the raw material tank (11) and the primary tank body (211); A filter (4), one end of the exhaust pipe (231) being in communication with the filter (4); The stirrer (212) comprises a stirring rod (2121) and a power source (2122); the stirring rod (2121) is located in the primary tank (211); and the power source (2122) is used to drive the stirring rod (2121) to rotate; A plurality of gas distribution pipes (24) are arranged at intervals in the primary tank body (211), the gas distribution pipes (24) comprising a gas distribution main pipe (241) and a gas distribution branch pipe (242) which are interconnected, a plurality of the gas distribution branch pipes (242) are arranged at intervals along the length direction of the gas distribution main pipe (241), and one end of the gas supply pipe (12) is connected to the gas distribution main pipe (241); The stirring rod (2121) is hollow, and an air outlet group is provided on the stirring rod (2121), and a plurality of air outlet groups are arranged at intervals along the length direction of the stirring rod (2121); One end of the stirring rod (2121) is connected to a gas transfer device (5), and the gas transfer device (5) comprises a transfer gas cylinder (51) and a connecting gas cylinder (52) which are connected to each other; one end of the transfer gas cylinder (51) is connected to the stirring rod (2121), and the other end is sleeved outside the connecting gas cylinder (52) and is rotatably connected to the connecting gas cylinder (52); At least one of the air supply pipes (12) is in communication with the connecting air cylinder (52), and the power source (2122) is used to drive the transfer air cylinder (51) to rotate; A transmission gear (2123) is fixed to the cylinder section of the transfer cylinder (51) located outside the primary tank body (211), and a driving gear (2124) is meshed on one side of the transmission gear (2123); The power source (2122) comprises a servo motor, and the output shaft of the servo motor is coaxially fixed with the driving gear (2124); A plurality of isolation plates (222) are fixed at intervals in the horizontal direction in the secondary mixing tank (22); the isolation plates (222) divide the secondary mixing tank (22) into a plurality of gas flow channels (221); and the isolation plates (222) are provided with a plurality of guide holes (2221) at intervals in the vertical direction.

2. A compounding system according to claim 1, characterized in that: A guide plate (223) is fixed at the bottom of each guide hole (2221), and the guide plate (223) is arranged obliquely; among multiple guide plates (223) located on the same isolation plate (222), the inclination directions of two adjacent guide plates (223) are opposite; and among multiple guide plates (223) located on different isolation plates (222), the inclination directions of two adjacent guide plates (223) are the same.

3. A compounding system according to claim 2, characterized in that: A heating component (6) is arranged outside the secondary mixing tank (22), and the heating component (6) comprises a heat-insulating sleeve (61) and a heating source arranged between the heat-insulating sleeve (61) and the secondary mixing tank (22).

4. A compounding system according to claim 3, characterized in that: The heating source is specifically configured as a heating pipe (62), the heating pipe (62) being spirally wound outside the secondary mixing tank (22), the heating pipe (62) being connected to a heat exchanger (7); The heat exchanger (7) comprises an electric heating box (71) and a heat exchange tube (72) arranged in the electric heating box (71); one end of the heat exchange tube (72) is provided with a heat transfer interface (721), and the other end is provided with a recovery interface (722); one end of the heating tube (62) is connected to the heat transfer interface (721), and the other end is connected to the recovery interface (722); The heating tube (62) is provided with a driving source (8), and the driving source (8) is used to drive the heat-conducting medium in the heating tube (62) to flow.

5. A compounding system according to claim 1, characterized in that: The filter (4) comprises a filter tank (41) and a primary filter layer (42), a drying filter layer (43) and a dirt-absorbing filter layer (44) which are sequentially arranged in the filter tank (41).

6. A compounding system according to claim 5, characterized in that: An isolation mesh plate (45) is provided between the primary filter layer (42) and the drying filter layer (43), and an isolation mesh plate (45) is also provided between the drying filter layer (43) and the dirt suction filter layer (44), and the isolation mesh plate (45) is wavy.

Citation Information

Patent Citations

  • Gas mixer

    JP2022142995A