Gas mixing and distributing device

Abstract

The invention provides a gas mixing and distributing device, and relates to the technical field of gas mixing preparation, the gas mixing and distributing device comprises a gas distributing frame fixedly connected with a gas distributing tank, the gas distributing tank is communicated with a first gas inlet pipe and a second gas inlet pipe, the gas distributing tank is rotatably connected with a gas distributing motor, and an output shaft of the gas distributing motor is fixedly connected with an upper gas distributing rotating wheel; the upper gas distribution runner and the upper portion of the gas distribution tank form an upper gas distribution cavity, the upper gas distribution cavity is communicated with the first gas inlet pipe, the end, away from an output shaft of the gas distribution motor, of the upper gas distribution runner is fixedly connected with a lower gas distribution runner, and the lower gas distribution runner and the lower portion of the gas distribution tank form a lower gas distribution cavity. An air outlet communicated with the upper air distribution cavity and the lower air distribution cavity is formed in the air distribution tank, and air distribution fan blades are rotationally connected to the air outlet. According to the gas mixing device, gas can be gradually discharged through rotation of the gas distribution fan blades, so that the gas can be uniformly stacked and mixed in the mixing tank.

Description

Technical Field

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

[0002] Mixed gas refers to a gas made by mixing source gas and diluted gas in a certain proportion. Mixed gas has a wide range of uses and can be used in instrument precision analysis, medical disinfection, electronic component manufacturing, welding protection and heat treatment. For example, by mixing oxygen and nitrogen for oxygen therapy for patients, a gas mixture of argon and carbon dioxide can be used to protect the welding area to prevent oxidation.

[0003] Referring to the Chinese patent application document with publication number CN115228313A, the subject name is a gas mixing device. The device ejects gas by forming a high-speed vortex under the action of a vortex finder in a first mixing chamber, preliminarily mixes a plurality of different gases evenly in the process, and mixes the gases evenly in a fourth mixing chamber under the action of a turbulator, and provides a groove in the third turbulent flow to extend the gas flow path, so that the mixed gas is further evenly mixed within a shorter length.

[0004] With respect to the above technical scheme, in the existing mixed gas filling process, the source gas needs to be filled into the mixing bottle first. After the detection sensor detects that the pressure value of the source gas reaches the set value, the solenoid valve is closed, and then the solenoid valve of the dilution gas is opened to fill the dilution gas. After the pressure in the buffer tank reaches the set value, the solenoid valve of the dilution gas is closed. After the mixed gas is filled, the mixing tank is mixed to ensure uniform mixing. However, when the mixing tank is rotated, the effect of the mixed gas after filling is often not ideal due to the unclear gas mixing state in the tank. Summary of the invention

[0005] In view of this, the present application provides a gas mixing and distribution device, aiming to solve the problem of uneven gas mixing.

[0006] The present application provides a mixing and air distribution device that adopts the following technical scheme, including a distribution frame, a first intake pipe and a second intake pipe; a distribution tank is fixedly connected to the distribution frame, and the distribution tank is communicated with the first intake pipe and the second intake pipe; the distribution tank is rotatably connected with a distribution motor, and an upper distribution wheel is fixedly connected to the output shaft of the distribution motor, and the upper distribution wheel and the upper part of the distribution tank form an upper distribution cavity, and the upper distribution cavity is communicated with the first intake pipe, and the upper distribution wheel is fixedly connected with a lower distribution wheel at one end of the upper distribution wheel away from the output shaft of the distribution motor, and the lower distribution wheel and the lower part of the distribution tank form a lower distribution cavity, and the lower distribution wheel is communicated with the second intake pipe, and an air outlet connected to the upper distribution cavity and the lower distribution cavity is opened on the distribution tank, and the air outlet is rotatably connected with a distribution fan blade.

[0007] By diverting the gas and introducing the diverted gas into the mixing area for mixing, the contact area and contact time of the gas can be increased, and the mixing efficiency can be improved. At the same time, the flow rate of each gas can be accurately controlled through diversion to ensure that the proportion of each component in the mixed gas meets the process requirements.

[0008] Optionally, the first air intake pipe and the second air intake pipe are respectively connected to pressure reducing valves for reducing the gas pressure in the first air intake pipe and the second air intake pipe.

[0009] The pressure reducing valve can control the gas pressure more accurately, thereby ensuring that the gas enters the mixing system at a predetermined flow rate and keeps the gas in a certain proportion. At the same time, it can provide a stable outlet pressure in the proportioning tank, which helps to maintain a constant gas flow rate and thus keep the proportion of each component in the mixed gas stable.

[0010] Optionally, a regulating mechanism for controlling the gas ratio in the upper gas distribution cavity and the lower gas distribution cavity is provided in the lower gas distribution cavity.

[0011] Optionally, the adjusting mechanism includes an adjusting motor fixedly connected to the gas distribution frame, an adjusting baffle is slidably connected in the lower gas distribution cavity, an adjusting sleeve is slidably connected on the gas distribution tank, and the adjusting sleeve is rotatably connected to the adjusting baffle, and the adjusting sleeve is connected to the adjusting motor via a worm gear structure.

[0012] By changing the volume of the lower gas distribution cavity, the pressure of the gas in the cavity is affected, so as to accurately control the gas outflow rate and then adjust the ratio of the mixed gas. By changing the volume of the gas outlet cavity to control the gas ratio, there is no need to add additional control equipment, which simplifies the system design.

[0013] Optionally, a connecting pipe is fixedly connected to the gas outlet, and one end of the connecting pipe away from the gas outlet is fixedly connected to a mixing tank, and the mixing tank is used to further mix the gas. An outlet pipe is fixedly connected above the mixing tank, and the outlet pipe is connected to an external collecting tank for collecting the exhausted gas.

[0014] The gas moves to the connecting pipe through the gas outlet, so that the gas is further mixed in the mixing tank. The mixed gas flows out through the gas outlet pipe and enters the collection tank.

[0015] Optionally, a degassing cylinder is fixedly connected below the mixing tank, a degassing block is fixedly connected to the output shaft of the degassing cylinder, and the degassing block is slidably connected to the inner wall of the mixing tank to push the gas in the mixing tank to be discharged into the collection tank.

[0016] Extrusion can help gas molecules mix faster, reduce the concentration gradient between gases during gas mixing, and improve the uniformity of mixing. At the same time, extrusion can increase the contact area and contact frequency between gas molecules, which helps to increase the reaction rate.

[0017] Optionally, the air outlet pipe is connected to an air outlet pump, and the air outlet pump is used to assist in the discharge of gas in the mixing tank.

[0018] Optionally, a one-way valve is fixedly connected to one side of the connecting pipe close to the mixing tank, and the one-way valve is used to prevent the gas in the mixing tank from flowing back into the gas distribution tank.

[0019] In summary, compared with the prior art, the present application includes at least one of the following beneficial technical effects: 1. By diverting the gas and introducing the diverted gas into the mixing area for mixing, the contact area and contact time of the gas can be increased, and the mixing efficiency can be improved. At the same time, the flow rate of each gas can be accurately controlled through diversion to ensure that the proportion of each component in the mixed gas meets the process requirements.

[0020] 2. The pressure reducing valve can control the gas pressure more accurately, thereby ensuring that the gas enters the mixing system at a predetermined flow rate and keeps the gas in a certain proportion. At the same time, it can provide a stable outlet pressure in the proportioning tank, which helps to maintain a constant gas flow rate and thus keep the proportion of each component in the mixed gas stable.

[0021] 3. Extrusion can help gas molecules mix faster, reduce the concentration gradient between gases during gas mixing, and improve the uniformity of mixing. At the same time, extrusion can increase the contact area and contact frequency between gas molecules, which helps to increase the reaction rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic structural diagram of a gas mixing and distribution device according to this embodiment; Figure 2 This is a schematic diagram of the structure of the gas tank in this embodiment; Figure 3 Schematic diagram of the structure of the upper gas distribution wheel and the lower gas distribution wheel of this embodiment; Figure 4 It is a schematic diagram of the structure of the upper gas distribution cavity and the lower gas distribution cavity of this embodiment; Figure 5 This is a schematic diagram of the structure of the mixing tank in this embodiment; Figure 6 This is a schematic diagram of the structure of the adjusting motor and the adjusting sleeve rod in this embodiment.

[0023] Explanation of the reference numerals in the accompanying drawings: 1. air distribution frame; 11. first air inlet pipe; 12. second air inlet pipe; 2. air distribution tank; 21. air distribution motor; 22. upper air distribution wheel; 23. upper air distribution cavity; 3. lower air distribution wheel; 31. lower air distribution cavity; 32. air outlet; 33. air distribution fan blade; 4. pressure reducing valve; 5. adjusting mechanism; 51. adjusting motor; 52. adjusting baffle; 53. adjusting sleeve rod; 6. connecting pipe; 61. mixing tank; 62. air outlet pipe; 7. exhaust cylinder; 71. exhaust block; 8. air outlet pump; 9. one-way valve. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the embodiments of the present application. Figure 1-Figure 6 , the technical scheme of the embodiment of the present application is clearly and completely described. Obviously, the described embodiment is a part of the embodiment of the present application, not all of the embodiments. Based on the described embodiment of the present application, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of this application.

[0025] Reference Figure 1 , Figure 3 and Figure 4The present embodiment provides a gas mixing and distribution device, including a distribution frame 1 placed on a horizontal plane, the distribution frame 1 is fixedly connected to a first air intake pipe 11 and a second air intake pipe 12, the distribution frame 1 is fixedly connected to a distribution tank 2, the distribution tank 2 is communicated with the first air intake pipe 11 and the second air intake pipe 12, the distribution tank 2 is rotatably connected to a distribution motor 21, the output shaft of the distribution motor 21 is fixedly connected to an upper distribution wheel 22, and the upper distribution wheel 22 is connected to the distribution tank 2 forms an upper gas distribution cavity 23, which is communicated with the first air inlet pipe 11; an upper gas distribution wheel 22 is fixedly connected with a lower gas distribution wheel 3 at one end away from the output shaft of the gas distribution motor 21; the lower gas distribution wheel 3 and the lower part of the gas distribution tank 2 form a lower gas distribution cavity 31; the lower gas distribution wheel 3 is communicated with the second air inlet pipe 12; an air outlet 32 ​​communicating with the upper gas distribution cavity 23 and the lower gas distribution cavity 31 is opened on the gas distribution tank 2; a gas distribution fan blade 33 is rotatably connected to the air outlet 32.

[0026] The gas distribution rack 1 is placed on a horizontal plane, and source gas is introduced into the first air inlet pipe 11 in the gas distribution rack 1, and the source gas is introduced into the gas distribution tank 2, and moves to the position of the upper gas distribution wheel 22 in the gas distribution tank 2, and is stored in the upper gas distribution cavity 23 on the upper gas distribution wheel 22; dilution gas is introduced into the second air inlet pipe 12 in the gas distribution rack 1, and the dilution gas is introduced into the gas distribution tank 2, and moves to the position of the lower gas distribution wheel 3 in the gas distribution tank 2, and is stored in the lower gas distribution tank 2 on the lower gas distribution wheel 3; the gas distribution motor 21 is started, and the gas distribution motor 21 drives the upper gas distribution wheel 22 and the lower gas distribution wheel 3 to rotate; during the rotation, the gas in the upper gas distribution cavity 23 and the lower gas distribution cavity 31 flows out through the gas outlet 32; during the outflow, the source gas and the dilution gas are evenly arranged in columns under the rotation of the gas distribution fan blades 33, and are mixed under the diversion of the gas distribution fan blades 33.

[0027] By diverting the gas and introducing the diverted gas into the mixing area for mixing, the contact area and contact time of the gas can be increased, and the mixing efficiency can be improved. At the same time, the flow rate of each gas can be accurately controlled through diversion to ensure that the proportion of each component in the mixed gas meets the process requirements.

[0028] Reference Figure 2 The first air intake pipe 11 and the second air intake pipe 12 are respectively connected with a pressure reducing valve 4 for reducing the gas pressure in the first air intake pipe 11 and the second air intake pipe 12.

[0029] When the first air inlet pipe 11 and the second air inlet pipe 12 are mixed in the proportioning tank, the pressure of the gas is controlled by the pressure reducing valve 4 .

[0030] The pressure reducing valve 4 can control the gas pressure more accurately, thereby ensuring that the gas enters the mixing system at a predetermined flow rate and keeps the gas in a certain proportion. At the same time, it can provide a stable outlet pressure in the proportioning tank, which helps to maintain a constant gas flow rate and thus keep the proportion of each component in the mixed gas stable.

[0031] Reference Figure 3 , Figure 4 and Figure 6 The lower gas distribution chamber 31 is provided with an adjusting mechanism 5 for controlling the gas ratio in the upper gas distribution chamber 23 and the lower gas distribution chamber 31. The adjusting mechanism 5 includes an adjusting motor 51, an adjusting baffle 52 and an adjusting sleeve rod 53. The adjusting motor 51 is fixedly connected to the gas distribution frame 1, and an adjusting baffle 52 is slidably connected in the lower gas distribution chamber 31. An adjusting sleeve rod 53 is slidably connected on the gas distribution tank 2, and the adjusting sleeve rod 53 is rotatably connected to the adjusting baffle 52. The adjusting sleeve rod 53 is connected to the adjusting motor 51 through a worm gear structure.

[0032] When the ratio between the gases needs to be adjusted, the adjusting motor 51 is started, so that the adjusting motor 51 drives the worm gear mechanism to move, and the worm gear mechanism drives the adjusting sleeve 53 to move close to the lower gas distribution chamber 31, so that the adjusting sleeve 53 drives the adjusting baffle 52 to move upward, and the volume in the lower gas distribution chamber 31 is changed, so that the gas ratio flows out after the change.

[0033] By changing the volume of the lower gas distribution cavity 31, the pressure of the gas in the cavity is affected, so as to accurately control the gas outflow rate and then adjust the ratio of the mixed gas. By changing the volume of the gas outlet cavity to control the gas ratio, there is no need to add additional control equipment, which simplifies the system design.

[0034] Reference Figure 4 and Figure 5 A connecting pipe 6 is fixedly connected to the gas outlet 32, and one end of the connecting pipe 6 away from the gas outlet 32 ​​is fixedly connected to a mixing tank 61, and the mixing tank 61 is used to further mix the gas. An outlet pipe 62 is fixedly connected above the mixing tank 61, and the outlet pipe 62 is connected to an external collecting tank for collecting the exhausted gas.

[0035] The gas moves to the connecting pipe 6 through the gas outlet 32, so that the gas is further mixed in the mixing tank 61, and the mixed gas flows out through the gas outlet pipe 62 and enters the collection tank.

[0036] Reference Figure 5 A degassing cylinder 7 is fixedly connected to the bottom of the mixing tank 61, and a degassing block 71 is fixedly connected to the output shaft of the degassing cylinder 7. The degassing block 71 is slidably connected to the inner wall of the mixing tank 61 to push the gas in the mixing tank 61 to be discharged into the collection tank.

[0037] When the gas enters the mixing tank 61 , the gas in the mixing tank 61 is squeezed by starting the degassing cylinder 7 to further mix the gas, and the gas is discharged to the outside through the connecting pipe 6 after mixing.

[0038] Extrusion can help gas molecules mix faster, reduce the concentration gradient between gases during gas mixing, and improve the uniformity of mixing. At the same time, extrusion can increase the contact area and contact frequency between gas molecules, which helps to increase the reaction rate.

[0039] Reference Figure 5 The air outlet pipe 62 is connected to an air outlet pump 8, and the air outlet pump 8 is used to assist the gas in the mixing tank 61 to be discharged.

[0040] Reference Figure 4 A one-way valve 9 is fixedly connected to the connecting pipe 6 on one side close to the mixing tank 61 , and the one-way valve 9 is used to prevent the gas in the mixing tank 61 from flowing back into the gas distribution tank 2 .

[0041] The implementation principle of a gas mixing and distribution device in the embodiment of the present application is: placing the gas distribution rack 1 on a horizontal plane, introducing source gas into the first air inlet pipe 11 in the gas distribution rack 1, allowing the source gas to control the pressure of the gas entering the gas distribution tank 2 through the pressure reducing valve 4, and storing it in the upper gas distribution cavity 23 on the upper gas distribution wheel 22, introducing dilution gas into the second air inlet pipe 12 in the gas distribution rack 1, allowing the dilution gas to control the pressure of the gas entering the gas distribution tank 2 through the pressure reducing valve 4, moving the dilution gas to the position of the lower gas distribution wheel 3 in the gas distribution tank 2, and storing it in the lower gas distribution tank 2 on the lower gas distribution wheel 3.

[0042] Start the gas distribution motor 21, so that the gas distribution motor 21 drives the upper gas distribution wheel 22 and the lower gas distribution wheel 3 to rotate. During the rotation, the gas in the upper gas distribution cavity 23 and the lower gas distribution cavity 31 flows out through the outlet 32. During the outflow process, the source gas and the dilution gas are evenly arranged in rows under the rotation of the gas distribution blades 33, and are mixed under the diversion of the gas distribution blades 33.

[0043] When it is necessary to mix the gases in different proportions, the regulating motor 51 is started, so that the regulating motor 51 drives the worm gear mechanism to move, and the worm gear mechanism drives the regulating sleeve 53 to move close to the lower gas distribution chamber 31, so that the regulating sleeve 53 drives the regulating baffle 52 to move upward, and changes the volume in the lower gas distribution chamber 31, so that the gas ratio flows out after the change.

[0044] The gas moves to the connecting pipe 6 through the gas outlet 32, so that the gas is further mixed in the mixing tank 61. By starting the degassing cylinder 7, the gas in the mixing tank 61 is squeezed to further mix the gas, and the gas is discharged to the outside through the connecting pipe 6 after mixing.

[0045] In addition, it should be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0046] The above is a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles described in the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A gas mixing and distribution device, comprising a distribution frame (1), a first intake pipe (11) and a second intake pipe (12), characterized in that: The gas distribution frame (1) is fixedly connected to a gas distribution tank (2), the gas distribution tank (2) is in communication with the first intake pipe (11) and the second intake pipe (12), the gas distribution tank (2) is rotatably connected to a gas distribution motor (21), an upper gas distribution wheel (22) is fixedly connected to the output shaft of the gas distribution motor (21), the upper gas distribution wheel (22) and the upper part of the gas distribution tank (2) form an upper gas distribution cavity (23), the upper gas distribution cavity (23) is connected to the first intake pipe (11), The upper gas distribution wheel (22) is fixedly connected to a lower gas distribution wheel (3) at one end away from the output shaft of the gas distribution motor (21); the lower gas distribution wheel (3) and the lower part of the gas distribution tank (2) form a lower gas distribution cavity (31); the lower gas distribution wheel (3) is connected to the second air inlet pipe (12); the gas distribution tank (2) is provided with an air outlet (32) connected to the upper gas distribution cavity (23) and the lower gas distribution cavity (31); the air outlet (32) is rotatably connected to a gas distribution fan blade (33).

2. A gas mixing and distribution device according to claim 1, characterized in that: The first air intake pipe (11) and the second air intake pipe (12) are both connected to a pressure reducing valve (4) for reducing the gas pressure in the first air intake pipe (11) and the second air intake pipe (12).

3. A gas mixing and distribution device according to claim 1, characterized in that: The lower gas distribution chamber (31) is provided with a regulating mechanism (5) for controlling the gas ratio in the upper gas distribution chamber (23) and the lower gas distribution chamber (31).

4. A gas mixing and distribution device according to claim 3, characterized in that: The regulating mechanism (5) comprises a regulating motor (51) fixedly connected to the gas distribution frame (1); an regulating baffle (52) is slidably connected in the lower gas distribution chamber (31); an regulating sleeve rod (53) is slidably connected to the gas distribution tank (2); the regulating sleeve rod (53) is rotatably connected to the regulating baffle (52); and the regulating sleeve rod (53) is connected to the regulating motor (51) via a worm gear structure.

5. The gas mixing and distribution device according to claim 1, characterized in that: A connecting pipe (6) is fixedly connected to the gas outlet (32); one end of the connecting pipe (6) away from the gas outlet (32) is fixedly connected to a mixing tank (61); the mixing tank (61) is used to further mix the gas; an outlet pipe (62) is fixedly connected above the mixing tank (61); the outlet pipe (62) is connected to an external collection tank and is used to collect the discharged gas.

6. A gas mixing and distribution device according to claim 5, characterized in that: A degassing cylinder (7) is fixedly connected below the mixing tank (61), and a degassing stopper (71) is fixedly connected to the output shaft of the degassing cylinder (7). The degassing stopper (71) is slidably connected to the inner wall of the mixing tank (61) and is used to push the gas in the mixing tank (61) to be discharged into the collection tank.

7. A gas mixing and distribution device according to claim 5, characterized in that: The gas outlet pipe (62) is connected to a gas outlet pump (8), and the gas outlet pump (8) is used to assist in the discharge of gas in the mixing tank (61).

8. The gas mixing and distribution device according to claim 5, characterized in that: A one-way valve (9) is fixedly connected to the connecting pipe (6) on one side close to the mixing tank (61), and the one-way valve (9) is used to prevent the gas in the mixing tank (61) from flowing back into the gas distribution tank (2).

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