A gas mixing device
By using a modular design and a gas mixing device with diffused air vents, the problems of large size, high energy consumption, and low purity of existing devices have been solved, achieving convenient mobility and efficient, low-energy gas mixing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI FULI ELECTRONIC TECH CO LTD
- Filing Date
- 2025-07-16
- Publication Date
- 2026-07-31
AI Technical Summary
Existing gas mixing devices are bulky, inconvenient to move, difficult to disassemble and maintain, have high energy consumption, and cause gas temperature to rise, with residual waste gas affecting purity.
It adopts a modular design, roller movement, air guide hole diffusion and exhaust mechanism to reduce energy consumption, prevent gas decomposition and ensure gas purity.
It enables convenient movement of the device, rapid mixing, low energy consumption, and high-purity gas mixing, avoiding the increased energy consumption and gas decomposition caused by mechanical stirring.
Smart Images
Figure CN224573547U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of gas mixing technology, and in particular relates to a gas mixing device. Background Technology
[0002] Gas mixing refers to the process of mixing two or more different gases in a specific ratio to form a gas mixture that meets specific requirements. This process is widely used in industries such as industry, medicine, scientific research, and environmental protection, and its core objective is to meet specific needs in different scenarios by adjusting the gas composition.
[0003] A search revealed a laboratory gas mixing control device with publication number CN217855737U on the Chinese Patent website. This device can be used for gas mixing, but it has some defects and shortcomings that need to be improved: (1) Some existing gas mixing devices are large in size, making them inconvenient to move and transport. They can only be used in designated locations, thus limiting their scope of use. In addition, most existing gas mixing devices adopt an integrated design, making it difficult to disassemble related components, which makes it inconvenient to regularly maintain and repair the device and its components; (2) Some existing gas mixing devices have stirring blades inside the device to enhance the turbulence effect of the gas through mechanical stirring. As a result, although this method can speed up the mixing speed of gases, the stirring blades require continuous power drive (such as an electric motor), which will significantly increase the energy consumption of the device, especially in high-pressure or high-viscosity gas environments, thus increasing the operating cost. Moreover, when high-speed stirring is carried out, the gas temperature is easily raised, which can lead to gas decomposition (such as O3 decomposing into O2 at high temperatures) or changes in physical properties (such as gas expansion affecting the density ratio); (3) After long-term use, some existing gas mixing devices often have some waste gas remaining inside, which is difficult to remove effectively. This makes it easy for the waste gas to mix with the gas to be mixed during subsequent gas mixing, thus contaminating the mixing process and affecting the purity of the target gas after mixing. Therefore, in view of the above problems, the gas mixing device provided by this utility model is of great significance. Utility Model Content
[0004] This invention provides a gas mixing device. The device's position can be moved by rolling rollers between the rollers and the ground, effectively expanding its application range. The device adopts a modular design; the top cover can be removed from the top of the housing by unscrewing the nuts. After removal, each air inlet pipe can be taken out from its corresponding air inlet for regular maintenance and repair of the device's internal components. Multiple sets of air guide holes effectively expand the gas coverage area, allowing the gas to be mixed to fully diffuse throughout the mixing chamber and make full contact with other gases. This not only ensures uniform mixing but also accelerates the gas mixing speed. Compared to mechanical stirring, this effectively reduces energy consumption and operating costs, and avoids gas decomposition or changes in properties caused by mechanical stirring due to increased gas temperature. An exhaust mechanism blows residual waste gas from the housing and mixing chamber towards the outlet, effectively preventing waste gas from mixing with the gas to be mixed during subsequent gas mixing and affecting the purity of the target gas after mixing. In summary, this invention solves the problems in the prior art.
[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:
[0006] This utility model discloses a gas mixing device, comprising a base, several rollers mounted on the bottom of the base, and a housing mounted on the top of the base. Gas cylinder seats are provided on both sides of the housing, and a fixing block is fixedly connected between the gas cylinder seat and the outer wall of the housing. A gas cylinder slot is opened on the top of the gas cylinder seat. The top of the housing is an open design and is equipped with a top cover. A protrusion is fixedly connected to the bottom of the top cover, and a gas mixing chamber is fixedly connected to the bottom of the protrusion. An air outlet is opened on the top of the top cover, and the bottom end of the air outlet passes through the top cover and the protrusion and communicates with the inner cavity of the gas mixing chamber. An air outlet valve is installed on the air outlet. Several air inlets are opened on both sides of the housing, and an air inlet pipe is installed in each air inlet. The end of the air inlet pipe extends into the gas mixing chamber, and several sets of air guide holes are opened in the pipe body. An exhaust mechanism is provided inside the housing.
[0007] The exhaust mechanism includes a fixing plate, which is fixedly connected to the inner wall of the housing and located below each intake pipe, and a fan is mounted on the fixing plate.
[0008] Furthermore, the gas cylinder slots are circular and are equidistantly distributed linearly along the length of the gas cylinder seat. Each gas cylinder slot has a buffer sleeve on its wall. The buffer sleeve is cylindrical and its outer diameter is equal to the diameter of the gas cylinder slot.
[0009] Furthermore, the number of air inlets is the same as the number of gas cylinder tanks, and the center of each air inlet corresponds one-to-one with the center of each gas cylinder tank.
[0010] Furthermore, the air intake pipe is U-shaped, and its outer diameter is equal to the diameter of the air inlet. Each group of air guide holes is linearly distributed at equal intervals along the height direction of the end of the air intake pipe, and each group of air guide holes is distributed in an equidistant ring along the circumferential direction of the end of the air intake pipe.
[0011] Furthermore, several connecting blocks are fixedly connected to the inner walls of both sides of the housing. Each connecting block has a limiting block fixedly connected to its end. The limiting blocks are arc-shaped, and their number is the same as that of the air inlets. Their inner diameter corresponds to the outer diameter of the air inlet pipe. The center of each limiting block corresponds to the center of each air inlet. One side of each air inlet pipe is attached to the inner side of the corresponding limiting block.
[0012] Furthermore, both sides of the top edge of the housing protrude outward and are provided with several positioning holes. The bottom of the top cover is fixedly connected with several studs. The number of studs is the same as the number of positioning holes, and their diameters correspond to the diameters of the positioning holes. The center of each stud corresponds one-to-one with the center of each positioning hole. Each stud is threaded with a nut that matches it.
[0013] Furthermore, both the protrusion and the shell have rectangular cross-sections, and the sidewall of the protrusion is provided with a sealing ring. The sealing ring is rectangular, and its inner length and width are equal to the length and width of the protrusion, respectively. The outer length and width of the sealing ring are equal to the inner wall length and width of the shell, respectively.
[0014] The present invention has the following advantages over the prior art:
[0015] (1) When the gas mixing device of this utility model is used, the position of the device can be moved by the rolling of the roller between the ground, thereby effectively expanding the application range of the device. The device adopts a modular design. The top cover can be removed from the top of the housing by unscrewing the nut. After the top cover is removed, each air inlet pipe can be taken out from the corresponding air inlet so as to carry out regular maintenance and repair of the internal parts and components of the device.
[0016] (2) When the gas mixing device of this utility model is used, the gas coverage range can be effectively expanded through multiple sets of gas guide holes, so that the gas to be mixed can be fully diffused into the entire mixing chamber and fully contact with other gases to be mixed. This not only ensures that the gas to be mixed can be mixed evenly, but also speeds up the gas mixing speed. Compared with mechanical stirring, it can effectively reduce energy consumption and operating costs, and also avoids the gas decomposition or change of physical properties caused by the rise in gas temperature due to mechanical stirring.
[0017] (3) When the gas mixing device of this utility model is used, the exhaust mechanism can blow the residual waste gas in the shell and the mixing chamber toward the outlet so that the waste gas can be discharged along the outlet, thereby effectively preventing the waste gas from mixing with the gas to be mixed during subsequent gas mixing and affecting the purity of the target gas after mixing.
[0018] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description
[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of the structure of a gas mixing device according to the present invention;
[0021] Figure 2 This is a schematic diagram of the shell structure in this utility model;
[0022] Figure 3 This is a cross-sectional view of the internal structure of the shell in this utility model;
[0023] Figure 4 This is a top view of the shell in this utility model;
[0024] Figure 5 This is a schematic diagram of the exhaust mechanism in this utility model;
[0025] Figure 6 This is a schematic diagram of the intake pipe in this utility model;
[0026] Figure 7 This is a schematic diagram of the top and bottom structures of the top cover in this utility model;
[0027] Figure 8 This is a schematic diagram of the structure of the buffer sleeve in this utility model;
[0028] Figure 9 This is a schematic diagram of the limiting block in this utility model;
[0029] Figure 10 This is a schematic diagram of the sealing ring in this utility model.
[0030] The attached diagram lists the components represented by each number as follows:
[0031] 1. Base; 2. Roller; 3. Housing; 4. Gas cylinder holder; 5. Fixing block; 6. Gas cylinder slot; 7. Top cover; 8. Protrusion; 9. Mixing chamber; 10. Gas outlet; 11. Gas outlet valve; 12. Gas inlet; 13. Gas inlet pipe; 14. Air guide hole; 15. Fixing plate; 16. Fan; 17. Buffer sleeve; 18. Connecting block; 19. Limiting block; 20. Positioning hole; 21. Stud; 22. Nut; 23. Sealing ring. Detailed Implementation
[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0033] In the description of this utility model, it should be understood that the terms "relative", "one end", "inner", "lateral", "end", "both ends", "both sides", "front", "one end face", "the other end face", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0034] Please see Figure 1-10As shown, this utility model discloses a gas mixing device, including a base 1. Several rollers 2 are installed at the bottom of the base 1, allowing the device to be moved by the rolling motion between the rollers 2 and the ground, thus effectively expanding its application range. A housing 3 is installed on the top of the base 1, and gas cylinder seats 4 are provided on both sides of the housing 3. Fixing blocks 5 are fixedly connected between the gas cylinder seats 4 and the outer wall of the housing 3. A gas cylinder slot 6 is provided on the top of the gas cylinder seat 4, into which a gas cylinder containing the gas to be mixed can be placed. The gas cylinder slot 6 can fix the gas cylinder to prevent it from tipping over when placed directly on the ground or the device. The top of the housing 3 is open and equipped with a top cover 7. A protrusion 8 is fixedly connected to the bottom of the top cover 7, and a mixing chamber 9 is fixedly connected to the bottom of the protrusion 8. An outlet 10 is provided on the top of the top cover 7, and the bottom end of the outlet 10... The top cover 7 and the protrusion 8 are connected to the inner cavity of the mixing chamber 9. An exhaust valve 11 is installed on the exhaust port 10. Several air inlets 12 are opened on both sides of the housing 3. An air inlet pipe 13 is installed in each air inlet 12. The end of the air inlet pipe 13 extends into the mixing chamber 9. Several sets of air guide holes 14 are opened on the body of the air inlet pipe 13. The bottle mouth of the gas cylinder can be connected to the air inlet pipe 13 through the air guide pipe. When it is necessary to mix the gas, the gas valve on the designated gas cylinder can be opened to introduce the gas to be mixed into the corresponding air inlet pipe 13. After the gas enters the air inlet pipe 13, it can be discharged to the mixing chamber 9 through each air guide hole 14 so that the gas can be mixed in the mixing chamber 9, thereby completing the gas mixing work. After that, the exhaust valve 11 can be opened to discharge the mixed target gas along the exhaust port 10. An exhaust mechanism is provided inside the housing 3.
[0035] The exhaust mechanism includes a fixing plate 15, which is fixedly connected to the inner wall of the housing 3 and located below each air inlet pipe 13. A fan 16 is installed on the fixing plate 15. After the device has been used for a long time, the exhaust valve 11 on the exhaust port 10 can be opened and the fan 16 can be driven to blow air. At this time, the air blown out by the fan 16 can blow the residual exhaust gas in the housing 3 and the mixing chamber 9 toward the exhaust port 10 so that the exhaust gas can be discharged along the exhaust port 10. This can effectively prevent the exhaust gas from mixing with the gas to be mixed during subsequent gas mixing and thus affecting the purity of the target gas after mixing.
[0036] The gas cylinder slots 6 are circular and are equidistantly distributed along the length of the gas cylinder base 4. Each gas cylinder slot 6 has a buffer sleeve 17 on its wall. The buffer sleeve 17 is cylindrical and its outer diameter is equal to the diameter of the gas cylinder slot 6. Multiple gas cylinders can be placed in multiple gas cylinder slots 6 at the same time. When the gas in the gas cylinder is used up, it can be removed from the gas cylinder slot 6 for quick replacement. The buffer sleeve 17 can be made of elastic materials such as sponge. The buffer sleeve 17 can separate the gas cylinder from the gas cylinder slot 6 to provide buffer protection, thereby avoiding direct contact between the cylinder body and the wall of the gas cylinder slot 6 when the gas cylinder is picked up, which would cause collision and wear.
[0037] The number of air inlets 12 is the same as that of the gas cylinder tank 6, and the center of each air inlet 12 corresponds one-to-one with the center of each gas cylinder tank 6. Through the cooperation of multiple air inlets 12 and gas cylinder tank 6, multiple gases to be mixed can be introduced into the device for mixing as needed, without having to frequently change the type of gas cylinder.
[0038] The intake pipe 13 is U-shaped, and its outer diameter is equal to that of the intake port 12. Each set of air guide holes 14 is linearly distributed at equal intervals along the height direction of the end of the intake pipe 13, and each set of air guide holes 14 is distributed in an equal ring at equal intervals along the circumferential direction of the end of the intake pipe 13. When the gas to be mixed enters the intake pipe 13 and is discharged through the air guide holes 14, the gas coverage range can be effectively expanded through multiple sets of air guide holes 14, so that the gas to be mixed can be fully diffused to the entire mixing chamber 9 and fully contact with other gases to be mixed. This not only ensures that the gas to be mixed can be mixed evenly, but also speeds up the gas mixing speed. Compared with mechanical stirring, it can effectively reduce energy consumption and operating costs, and also avoids the gas decomposition or change of physical properties caused by the increase in gas temperature due to mechanical stirring.
[0039] The inner walls of both sides of the housing 3 are fixedly connected with several connecting blocks 18. Each connecting block 18 is fixedly connected to a limiting block 19 at its end. The limiting blocks 19 are arc-shaped, and their number is the same as that of the air inlets 12. Their inner diameter is equal to that of the outer diameter of the air inlet pipe 13. The center of each limiting block 19 corresponds to the center of each air inlet 12. One side of each air inlet pipe 13 is attached to the inner side of the corresponding limiting block 19. The air inlet pipe 13 can be limited and fixed by each limiting block 19 to prevent the position of the air inlet pipe 13 from shifting or tilting.
[0040] The top edges of both sides of the housing 3 protrude outward and have several positioning holes 20. The bottom of the top cover 7 is fixedly connected with several studs 21. The number of studs 21 is the same as the number of positioning holes 20, and their diameters correspond to the diameters of the positioning holes 20. The center of each stud 21 corresponds one-to-one with the center of each positioning hole 20. Each stud 21 is threaded with a nut 22 that matches it. When the top cover 7 is placed on top of the housing 3, each stud 21 can be aligned and pass through the corresponding positioning hole 20. At this time, the nut 22 is threaded onto each stud 21 and tightened. The top cover 7 can be fixed by the mutual cooperation between the studs 21, positioning holes 20, and nuts 22. The top cover 7 can be removed from the top of the housing 3 by unscrewing the nuts 22. After the top cover 7 is removed, each air inlet pipe 13 can be taken out from the corresponding air inlet 12 for regular maintenance and repair of the internal parts and components of the device.
[0041] Both the protrusion 8 and the housing 3 have rectangular cross-sections. The sidewall of the protrusion 8 is provided with a sealing ring 23. The sealing ring 23 is rectangular, and its inner length and width are equal to the length and width of the protrusion 8, respectively. The outer length and width of the sealing ring 23 are equal to the length and width of the inner wall of the housing 3, respectively. The sealing ring 23 can be made of elastic materials such as rubber and is fixed by adhesives. When the top cover 7 is fixed on the top of the housing 3, the protrusion 8 can be inserted into and fit against the inner wall of the housing 3. At this time, the sealing ring 23 can fill the gap between the protrusion 8 and the housing 3 to achieve a sealing effect, thereby effectively preventing the gas to be mixed from escaping through the gap and causing waste and pollution.
[0042] All standard parts used in the application documents can be purchased from the market. All components in this application documents can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art.
[0043] The working principle of this utility model is as follows:
[0044] In use, the gas cylinders containing the gases to be mixed can be placed in the corresponding cylinder slots 6 on the cylinder seats 4 on both sides. The cylinder openings can be connected to the inlet pipes 13 in each inlet 12 via gas guide pipes. When gas mixing is required, the gas valve on the designated gas cylinder can be opened to guide the gas to be mixed into the corresponding inlet pipe 13. After entering the inlet pipe 13, the gas can be led out to the mixing chamber 9 through each gas guide hole 14, so that the gas can be mixed in the mixing chamber 9, thereby completing the gas mixing work. Afterwards, the outlet valve 11 can be opened to discharge the mixed target gas along the outlet 10. The multiple sets of gas guide holes 14 can effectively expand the gas coverage area, so that the gas to be mixed can be fully diffused throughout the mixing chamber 9 and fully contact with other gases to be mixed. This not only ensures that the gases to be mixed are mixed evenly, but also speeds up the gas mixing process. Compared with mechanical stirring, this method is much faster. It can effectively reduce energy consumption and operating costs, and also avoid gas decomposition or changes in physical properties caused by the rise in gas temperature due to mechanical stirring. The position of the device can be moved by the rolling of the roller 2 between the roller and the ground, thereby effectively expanding the application range of the device. After the device has been used for a long time, the exhaust valve 11 on the exhaust port 10 can be opened and the fan 16 can be driven to blow air. At this time, the air blown by the fan 16 can blow the residual exhaust gas in the housing 3 and the mixing chamber 9 towards the exhaust port 10, so that the exhaust gas can be discharged along the exhaust port 10. This can effectively prevent the exhaust gas from mixing with the gas to be mixed during subsequent gas mixing, thus affecting the purity of the target gas after mixing. The top cover 7 can be removed from the top of the housing 3 by unscrewing the nut 22. After the top cover 7 is removed, each air inlet pipe 13 can be taken out from the corresponding air inlet 12 for regular maintenance and repair of the internal parts and components of the device.
[0045] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A gas blending apparatus, characterized by, The device includes a base with several rollers mounted on its bottom and a housing mounted on its top. Gas cylinder holders are located on both sides of the housing, and a fixing block is fixedly connected between the gas cylinder holder and the outer wall of the housing. A gas cylinder slot is opened on the top of the gas cylinder holder. The top of the housing is open and fitted with a top cover. A protrusion is fixedly connected to the bottom of the top cover, and a mixing chamber is fixedly connected to the bottom of the protrusion. An air outlet is opened on the top of the top cover, and the bottom end of the air outlet penetrates the top cover and the protrusion, communicating with the inner cavity of the mixing chamber. An air outlet valve is installed on the air outlet. Several air inlets are opened on both sides of the housing, and an air inlet pipe is installed in each air inlet. The end of the air inlet pipe extends into the mixing chamber, and several sets of air guide holes are opened in the body of the air inlet pipe. An exhaust mechanism is installed inside the housing. The exhaust mechanism includes a fixing plate, which is fixedly connected to the inner wall of the housing and located below each intake pipe, and a fan is mounted on the fixing plate.
2. A gas mixing device according to claim 1, wherein The gas cylinder slots are circular and are distributed linearly at equal intervals along the length of the gas cylinder seat. Each gas cylinder slot has a buffer sleeve on its wall. The buffer sleeve is cylindrical and its outer diameter is equal to the diameter of the gas cylinder slot.
3. The gas mixing device of claim 1, wherein The number of air inlets is the same as the number of gas cylinder slots, and the center of each air inlet corresponds one-to-one with the center of each gas cylinder slot.
4. The gas mixing device of claim 1, wherein The air intake pipe is U-shaped, and its outer diameter is equal to the diameter of the air inlet. Each group of air guide holes is linearly distributed at equal intervals along the height direction of the end of the air intake pipe, and each group of air guide holes is distributed in a ring at equal intervals along the circumferential direction of the end of the air intake pipe.
5. The gas mixing device of claim 1, wherein Several connecting blocks are fixedly connected to the inner walls of both sides of the housing. Each connecting block has a limiting block fixedly connected to its end. The limiting blocks are arc-shaped, and their number is the same as the air inlets. Their inner diameter corresponds to the outer diameter of the air inlet pipe. The center of each limiting block corresponds to the center of each air inlet. One side of each air inlet pipe is attached to the inner side of the corresponding limiting block.
6. The gas mixing device of claim 1, wherein Both sides of the top edge of the housing protrude outward and have several positioning holes. The bottom of the top cover is fixedly connected with several studs. The number of studs is the same as the number of positioning holes, and their diameter is equal to the diameter of the positioning holes. The center of each stud corresponds one-to-one with the center of each positioning hole. Each stud is threaded with a nut that matches it.
7. The gas mixing device of claim 1, wherein Both the protrusion and the shell have rectangular cross-sections, and the sidewall of the protrusion is provided with a sealing ring. The sealing ring is rectangular, and its inner length and width are equal to the length and width of the protrusion, respectively. The outer length and width of the sealing ring are equal to the inner length and width of the shell, respectively.