Device and method for preparing helium-oxygen mixed gas for breathing

Abstract

The invention relates to the technical field of gas mixing, and discloses a helium-oxygen mixed gas manufacturing device and method.The helium-oxygen mixed gas manufacturing device for breathing comprises a tank body, an inner cylinder, a helium guiding-in piece, an oxygen guiding-in piece, a drainage channel and a flow control assembly.The helium guiding-in piece and the oxygen guiding-in piece are used for guiding helium and oxygen correspondingly; according to the helium-oxygen mixed gas preparation device, helium and oxygen are primarily mixed in the first-stage mixing cavity in a large range under the control of the flow control assembly on intermittent opening and closing of a channel opening of the drainage channel, the primarily-mixed helium-oxygen mixed gas gradually enters the second-stage mixing cavity, mixing is further completed, manufacturing of the helium-oxygen mixed gas is achieved, and the production efficiency of the helium-oxygen mixed gas is improved. The mixing effect is improved, and the quality of helium-oxygen mixed gas is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of gas mixing, and in particular to a device and method for producing a helium-oxygen mixed gas for breathing. Background Art

[0002] Gas mixing is the process of two or more gases to be mixed entering a two-stage or multi-stage pressure balancing device through a one-way valve to balance their input pressure difference, thereby ensuring that the pressures of the component gas and the dilution gas before mixing are absolutely the same. The flow control valve is then adjusted to set the flow of various gases according to the desired mixing ratio. When different types of gases are injected into the same container, corresponding stirring measures are required to fully mix the gases. Currently, gas mixing devices are mostly based on the mutual impact of high-pressure gases to perform mixing operations. However, according to actual tests, the mixed gas produced by relying solely on impact mixing between gases often has a low mixing rate, which in turn causes problems in subsequent use.

[0003] The prior art discloses a gas mixing device, which relates to the field of gas mixing and includes a mixing container and a positioning tube. In the invention, the annular outer surface of the mixing container is penetrated and connected with three positioning tubes at the top position, and a sealing bearing is embedded in the positioning tube. An adjusting component is arranged on the upper side of the sealing bearing, and the adjusting component includes a gear sleeve, a rubber gear and an L-shaped tube; a gear sleeve is embedded in the positioning tube, and a rubber gear is inserted in the gear sleeve. An L-shaped tube is sleeved at the center of the rubber gear, and the L-shaped tube is inserted from the sealing bearing into the cavity of the mixing container, and then when the high-pressure gas blows the stirring blade with airflow, the sleeve and the stirring blades equally arranged on the outside rotate relative to the cavity in the mixing container. During the rotation process, gases of different specifications can be fully mixed in the closed cavity to achieve the purpose of efficient mixing of the gas. The prior art has the problem that the gas cannot be mixed in place through the rotation of the stirring blade, which easily causes different gases to remain at the edge of the mixing container, thereby causing incomplete mixing. Summary of the invention

[0004] The purpose of the present invention is to provide a device and method for producing a helium-oxygen mixed gas for breathing, so as to realize the production of the helium-oxygen mixed gas, improve the mixing effect, ensure the quality of the helium-oxygen mixed gas, and ensure that the helium-oxygen mixed gas is mixed completely.

[0005] In order to achieve the above-mentioned object, the present invention provides a device for producing a helium-oxygen mixed gas for breathing, comprising a tank body, a helium inlet is arranged at the end of the tank body, an oxygen inlet is arranged at the top of the tank body, an air outlet is arranged at the bottom of the tank body, a helium electric-controlled valve and an oxygen electric-controlled valve are arranged at the helium inlet and the oxygen inlet, respectively, and an inner cylinder is also included, the inner cylinder is located inside the tank body, a helium introduction member connected to the helium inlet is arranged in the hollow cavity of the inner cylinder, an oxygen introduction member located in the hollow cavity of the inner cylinder is arranged on the helium introduction member, and the inner wall of the inner cylinder is connected to the helium inlet. The cavity between the gas introduction members forms a primary mixing chamber, the cavity between the end of the inner tube opposite to the helium inlet provided on the tank body and the tank body forms a secondary mixing chamber, the oxygen inlet is located in the primary mixing chamber, the gas outlet is located in the secondary mixing chamber, the end of the inner tube opposite to the helium inlet provided on the tank body is also provided with a drainage channel connected to the secondary mixing chamber, the drainage channel is provided with a flow control component for controlling the helium-oxygen mixture to enter the secondary mixing chamber from the primary mixing chamber in quantity, and a drainage mechanism for introducing the helium-oxygen mixture in the primary mixing chamber into the secondary mixing chamber.

[0006] Preferably, the helium inlet member is provided with air guide tubes coaxially fixed at both ends of the interior of the tank body, the air guide tubes are communicated with the helium inlet, the two air guide tubes are communicated and a rotating cylinder is provided to rotate therebetween, the rotating cylinder is located in the hollow cavity of the inner cylinder, the drainage channel is arranged between one end of the rotating cylinder and the end portion on the same side of the inner cylinder, a plurality of air holes are evenly opened on the outer surface of the rotating cylinder, and a plurality of centrifugal plates are also arranged on the outer surface of the rotating cylinder around its circumferential direction and along its axial direction, and a rotating driver for driving the rotating cylinder to rotate is connected to the air guide tubes.

[0007] Preferably, the oxygen inlet component comprises a rotating sleeve, which is mounted on the rotating cylinder, and the rotating sleeve is provided with a plurality of strip openings around its circumferential direction and along its axial direction, and the edge of each of the strip openings is provided with a strip plate extending inwardly along the radial direction of the rotating sleeve, and concentric rings are provided at both ends of the rotating sleeve, and two clamping plates for clamping the centrifugal plates are symmetrically provided on the inner walls of the concentric rings at positions corresponding to each of the centrifugal plates.

[0008] Preferably, the drainage channel includes an inner ring sleeve and an outer ring sleeve, the inner ring sleeve is coaxially sleeved on the end of the rotating cylinder and fixedly connected thereto, the outer ring sleeve is coaxially sleeved on the inner ring sleeve, the end of the outer ring sleeve is connected to the end of the inner cylinder, and the drainage channel connected to the primary mixing chamber and the secondary mixing chamber is located between the inner ring sleeve and the outer ring sleeve, the outer wall of the inner ring sleeve is provided with a plurality of stirring rods extending toward the inner wall of the outer ring sleeve along its axial direction, and a spoiler rod is provided on the inner wall of the outer ring sleeve corresponding to each two adjacent stirring rods.

[0009] Preferably, the flow control assembly comprises an open-closed ring member, and the open-closed ring member is arranged at the channel opening of the drainage channel close to the rotating cylinder, and the outer ring sleeve is provided with an open-closed driver for driving the open-closed ring member.

[0010] Preferably, the opening and closing ring member includes a plurality of arc blocks, and the plurality of arc blocks are evenly distributed along the circumferential direction of the inner ring sleeve, and each of the arc blocks can move along the axial direction of the inner ring sleeve, and a fixing ring is sleeved on the outer ring sleeve, and a guide bar is extended on the fixing ring corresponding to the moving direction of each arc block, and each of the arc blocks is provided with a sliding groove slidably connected to the corresponding guide bar.

[0011] Preferably, a sealing gasket is further included, and the sealing gasket is located between the arc block and the end of the inner ring sleeve.

[0012] Preferably, the opening and closing drive includes a rotating sleeve, which is coaxially arranged on the outer ring sleeve and rotatably connected to the outer ring sleeve, each of the arc blocks is located in the rotating sleeve, and a connecting rod is hinged between the edge of the rotating sleeve and each of the arc blocks, and a reciprocating motor is provided on the outer ring sleeve to drive the rotating sleeve to rotate.

[0013] Preferably, the drainage mechanism includes a first drainage fan and a second drainage fan, an outer sleeve is sleeved on the outer ring sleeve, an end of the outer sleeve is fixedly connected to the end of the tank body, an exhaust channel is formed between the outer sleeve and the outer ring sleeve, the exhaust channel is connected to the drainage channel and the secondary mixing chamber, the first drainage fan is located at the drainage channel near the channel opening of the rotating cylinder and between the inner cylinder and the opening and closing ring member, and the second drainage fan is located at the connection between the exhaust channel and the drainage channel.

[0014] The present invention also provides a method for producing a helium-oxygen mixed gas for breathing, comprising the following steps: S1, introducing helium and oxygen into the helium introduction member and the oxygen introduction member through the helium inlet and the oxygen inlet respectively, and controlling the specified flow rate of the helium and oxygen electric-controlled valves; S2, starting the helium introduction member and the oxygen introduction member to promote the helium and oxygen to contact each other in the primary mixing chamber in the form of collision, thereby performing large-scale mixing; S3. Controlling the intermittent opening and closing of the channel opening of the drainage channel through the flow control component to promote the helium-oxygen mixed gas to enter the secondary mixing chamber in quantity and further mix during the flow process.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The helium and oxygen are respectively drained by the helium inlet and the oxygen inlet, so that the helium and oxygen are preliminarily mixed in a large range in the primary mixing chamber. With the intermittent opening and closing of the channel opening of the drainage channel by the flow control component, the preliminarily mixed helium-oxygen mixed gas gradually enters the secondary mixing chamber to further complete the mixing, thereby realizing the production of the helium-oxygen mixed gas, improving the mixing effect, and ensuring the quality of the helium-oxygen mixed gas. Furthermore, the helium is thrown out through the air holes in the rotating cylinder as the rotating cylinder rotates, and the cyclotron force of the centrifugal plate on the helium causes the helium and oxygen to collide and mix, thereby achieving a large-scale contact between the helium and oxygen, improving the mixing effect of the helium and oxygen, and improving the mixing rate of the two; after the oxygen enters the rotating sleeve, it contacts with the oxygen in a large range, and as the strip plates on the rotating sleeve stir the helium and oxygen, the helium and oxygen are mixed, thereby achieving preliminary mixing of the helium and oxygen, and improving the mixing rate of the helium and oxygen; and the inner ring sleeve rotates together with the rotating cylinder, causing the helium-oxygen mixture to be stirred by the stirring rod in the drainage channel formed between the inner ring sleeve and the outer ring sleeve, and the stirred helium-oxygen mixture contacts the spoiler rod to disperse, thereby achieving further mixing of the helium-oxygen mixture, improving the mixing effect of the helium-oxygen mixture, and ensuring that the helium-oxygen mixture is completely mixed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 2 is a schematic diagram of the three-dimensional structure of a device for producing a helium-oxygen mixed gas for breathing according to an embodiment of the present invention; Figure 2 It is a partial three-dimensional structural cross-sectional view of a device for producing a helium-oxygen mixed gas for breathing according to an embodiment of the present invention; Figure 3 is a partial three-dimensional structural cross-sectional view from another angle of the device for producing helium-oxygen mixed gas for breathing according to an embodiment of the present invention; Figure 4 is a cross-sectional view of a device for producing a helium-oxygen mixed gas for breathing according to an embodiment of the present invention; Figure 5 is a three-dimensional structural cross-sectional view of a device for producing a helium-oxygen mixed gas for breathing according to an embodiment of the present invention; Figure 6 is a schematic diagram of the three-dimensional structure of the drainage channel and the flow control component of an embodiment of the present invention; Figure 7 is a partial three-dimensional structural cross-sectional view of a drainage channel and a flow control component according to an embodiment of the present invention; Figure 8 is a cross-sectional view of a drainage channel and a flow control assembly according to an embodiment of the present invention; Fig. 9 This is an enlarged schematic diagram of point A of the device for producing helium-oxygen mixed gas for breathing according to an embodiment of the present invention; Fig.10 It is an enlarged schematic diagram of point B of the device for producing helium-oxygen mixed gas for breathing according to an embodiment of the present invention.

[0017] In the figure, 1, tank body; 11, helium inlet; 111, helium electric control valve; 12, oxygen inlet; 121, oxygen electric control valve; 13, gas outlet; 2, inner cylinder; 21, primary mixing chamber; 22, secondary mixing chamber; 3, helium inlet; 31, air guide tube; 32, rotating cylinder; 321, air hole; 322, centrifugal plate; 33, rotating driver; 4, oxygen inlet; 41, rotating sleeve; 411, strip port; 412, strip plate; 42, concentric ring; 42 1. Clamp; 5. Drainage channel; 51. Inner ring sleeve; 511. Stirring rod; 52. Outer ring sleeve; 521. Spoiler rod; 6. Flow control assembly; 61. Opening and closing ring; 611. Arc block; 612. Sealing gasket; 62. Opening and closing drive; 621. Rotating sleeve; 6211. Connecting rod; 622. Reciprocating motor; 63. Fixed ring; 631. Guide strip; 7. Exhaust channel; 71. Outer sleeve; 72. First drainage fan; 73. Second drainage fan. DETAILED DESCRIPTION

[0018] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0019] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0020] In the description of the present invention, it should be noted that, 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 ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] Furthermore, in the description of the present invention, unless otherwise specified, “plurality” means two or more.

[0022] Embodiment 1 like Figure 1-Figure 7 As shown, a device for producing a helium-oxygen mixed gas for breathing in a preferred embodiment of the present invention comprises a tank body 1, a helium inlet 11 is provided at the end of the tank body 1, an oxygen inlet 12 is provided at the top of the tank body 1, an air outlet 13 is provided at the bottom of the tank body 1, a helium electric-controlled valve 111 and an oxygen electric-controlled valve 121 are provided at the helium inlet 11 and the oxygen inlet 12, respectively, and is characterized in that it also comprises an inner cylinder 2, the inner cylinder 2 is located inside the tank body 1, a helium introduction member 3 connected to the helium inlet 11 is provided in the hollow cavity of the inner cylinder 2, an oxygen introduction member 4 located in the hollow cavity of the inner cylinder 2 is provided on the helium introduction member 3, and the inner wall of the inner cylinder 2 is connected to the helium introduction member 3. The cavity between the inlet parts 3 forms a primary mixing chamber 21, and the end of the inner tube 2 opposite to the helium inlet 11 provided on the tank body 1 forms a secondary mixing chamber 22 with the tank body 1, the oxygen inlet 12 is located in the primary mixing chamber 21, and the gas outlet 13 is located in the secondary mixing chamber 22. The end of the inner tube 2 opposite to the helium inlet 11 provided on the tank body 1 is also provided with a drainage channel 5 connected to the secondary mixing chamber 22, and the drainage channel 5 is provided with a flow control component 6 for controlling the helium-oxygen mixed gas to enter the secondary mixing chamber 22 from the primary mixing chamber 21 in quantity and a drainage mechanism for introducing the helium-oxygen mixed gas in the primary mixing chamber 21 into the secondary mixing chamber 22. In this embodiment, the oxygen introduction part 4 is arranged around the helium introduction part 3 and is located in the hollow cavity provided by the inner tube 2.

[0023] When helium and oxygen are mixed, first, helium is introduced into the helium introduction member 3 through the helium inlet 11, and oxygen is introduced into the oxygen introduction member 4 through the oxygen inlet 12. The amount of helium and oxygen introduced is controlled by the helium electric control valve 111 and the oxygen electric control valve 121. Then, the helium introduction member 3 and the oxygen introduction member 4 respectively guide the helium and oxygen into the primary mixing chamber 21. The helium and oxygen collide with each other under the driving force and contact each other. The two are mixed in a large range. After mixing for a period of time, the flow control component 6 controls the passage of the drainage channel 5. The opening of the drainage channel 5 is opened to guide the helium-oxygen mixture into the drainage channel 5, and the channel opening of the drainage channel 5 is in an intermittent opening and closing state under the control of the flow control component 6, so that the helium-oxygen mixture enters the drainage channel 5 in quantity, and the helium-oxygen mixture entering the drainage channel 5 then enters the secondary mixing chamber 22 for a secondary mixing process, further promoting the mixing of helium and oxygen, until the helium-oxygen mixture in the primary mixing chamber 21 completely enters the secondary mixing chamber 22, and finally completes the mixing of the helium-oxygen mixture, and is discharged and collected through the gas outlet 13.

[0024] Embodiment 2 The difference between this embodiment and the first embodiment is that Figure 2-Figure 9As shown, the helium inlet 3 is provided with an air guide tube 31 coaxially fixed at both ends of the tank body 1, the air guide tube 31 is connected with the helium inlet 11, and a rotating cylinder 32 is provided between the two air guide tubes 31 and is rotatably provided. The rotating cylinder 32 is located in the hollow cavity 2 of the inner cylinder 2, and the drainage channel 5 is provided between one end of the rotating cylinder 32 and the end of the inner cylinder 2 on the same side. A plurality of air holes 321 are evenly opened on the outer surface of the rotating cylinder 32, and a plurality of centrifugal plates 322 are also provided on the outer surface of the rotating cylinder 32 around its circumferential direction and along its axial direction. A rotating driver 33 for driving the rotating cylinder 32 to rotate is connected to the air guide tube 31.

[0025] When the helium introduction member 3 introduces helium into the primary mixing chamber 21, the helium enters the air guide tube 31 through the helium inlet 11, and as it is pressurized, the helium enters the rotating cylinder 32, and the rotating cylinder 32 is driven to rotate by the rotary driver 33. As the rotating cylinder 32 rotates, the helium therein is thrown out through the air holes 321, and the centrifugal plate 322 on the rotating cylinder 32 has the effect of causing the helium to flow outward, so that the helium and oxygen collide and mix.

[0026] like Figure 2-Figure 9 As shown, the oxygen introduction member 4 includes a rotating sleeve 41, which is sleeved on the rotating cylinder 32. The rotating sleeve 41 is provided with a plurality of strip openings 411 around its circumferential direction and along its axial direction. The edge of each strip opening 411 is provided with a strip plate 412 extending inwardly along the radial direction of the rotating sleeve 41. Concentric rings 42 are provided at both ends of the rotating sleeve 41. Two clamping plates 421 for clamping the centrifugal plates 322 are symmetrically provided on the inner wall of the concentric rings 42 at the position corresponding to each centrifugal plate 322.

[0027] When the oxygen introduction member 4 introduces oxygen into the primary mixing chamber 21, the oxygen enters the inner cylinder 2 through the oxygen inlet 12. Since the concentric ring 42 at the end of the rotating sleeve 41 is provided with a clamping plate 421 that is clamped with the centrifugal plate 322 on the rotating cylinder 32, the rotating sleeve 41 and the rotating cylinder 32 are in a connected state. As the rotating cylinder 32 rotates, the rotating sleeve 41 also rotates therewith. As the rotating sleeve 41 rotates, oxygen flows between the rotating sleeve 41 and the rotating cylinder 32 through the strip opening 411 on its surface, thereby colliding with the helium. After the helium and oxygen come into contact with a large range, since the inner wall of the rotating sleeve 41 is provided with a strip plate 412, the strip plate 412 has the effect of stirring the helium and oxygen, thereby mixing the helium and oxygen.

[0028] The rest of the structure of this embodiment is the same as that of the first embodiment and will not be described in detail here.

[0029] Embodiment 3 The difference between this embodiment and the second embodiment is that Figure 2-Figure 10As shown, the drainage channel 5 includes an inner ring sleeve 51 and an outer ring sleeve 52. The inner ring sleeve 51 is coaxially sleeved on the end of the rotating cylinder 32 and fixedly connected thereto. The outer ring sleeve 52 is coaxially sleeved on the inner ring sleeve 51. The end of the outer ring sleeve 52 is connected to the end of the inner cylinder 2. Between the inner ring sleeve 51 and the outer ring sleeve 52 is the drainage channel 5 connected to the primary mixing chamber 21 and the secondary mixing chamber 22. The outer wall of the inner ring sleeve 51 is provided with a plurality of stirring rods 511 extending toward the inner wall of the outer ring sleeve 52 along its axial direction. A spoiler rod 521 is provided on the inner wall of the outer ring sleeve 52 corresponding to each two adjacent stirring rods 511.

[0030] When the flow control component 6 controls the drainage channel 5 to open, the initially mixed helium-oxygen mixture enters the drainage channel 5. As the flow control component 6 intermittently opens and closes the channel opening of the drainage channel 5, the helium-oxygen mixture in the primary mixing chamber 21 is prompted to flow gradually into the drainage channel 5. Since the inner ring sleeve 51 is fixedly connected to the rotating cylinder 32, the inner ring sleeve 51 rotates with the rotating cylinder 32, and the stirring rod 511 on the inner ring sleeve 51 further stirs the helium-oxygen mixture. The spoiler rod 521 on the outer ring sleeve 52 cooperates with the stirring rod 511 to mix the helium-oxygen mixture, so that the mixing of the helium-oxygen mixture is more complete.

[0031] like Figure 6-Figure 10 As shown, the flow control assembly 6 includes an opening and closing ring 61, which is arranged at the channel opening of the drainage channel 5 close to the rotating cylinder 32, and an opening and closing driver 62 for driving the opening and closing ring 61 is provided on the outer ring sleeve 52.

[0032] When the flow control component 6 controls the opening and closing of the channel opening of the drainage channel 5 , the opening and closing ring 61 is driven to open or close in the drainage channel 5 by the opening and closing driver 62 , thereby realizing the opening and closing of the channel opening of the drainage channel 5 .

[0033] like Figure 6-Figure 10 As shown, the opening and closing ring member 61 includes a plurality of arc blocks 611, and the plurality of arc blocks 611 are evenly distributed along the circumferential direction of the inner ring sleeve 51, and each arc block 611 can move along the axial direction of the inner ring sleeve 51, and a fixing ring 63 is sleeved on the outer ring sleeve 52, and a guide bar 631 is extended on the fixing ring 63 corresponding to the moving direction of each arc block 611, and each arc block 611 is provided with a sliding groove slidably connected to the corresponding guide bar 631.

[0034] When the opening and closing ring 61 is driven by the opening and closing driver 62, the multiple arc blocks 611 move synchronously along the corresponding guide strips 631 to form a ring structure between the multiple arc blocks 611. At this time, the channel opening of the drainage channel 5 is in a closed state. As the multiple arc blocks 611 move outward, the channel opening is opened accordingly, and the opening and closing driver 62 reciprocates to drive the arc blocks 611 to move, thereby controlling the helium-oxygen mixture to enter the drainage channel 5 in quantity.

[0035] like Figure 8 As shown, this embodiment further includes a sealing gasket 612 , which is located between the arc block 611 and the end of the inner ring sleeve 51 .

[0036] When a plurality of arc blocks 611 are combined to form an annular structure, the sealing gasket 612 on the end surface of the arc block 611 contacts the inner ring sleeve 51, thereby performing sealing to prevent the helium-oxygen mixture from leaking into the secondary mixing chamber 22 through the drainage channel 5 during the mixing process in the primary mixing chamber 21, resulting in incomplete mixing.

[0037] The rest of the structure of this embodiment is the same as that of the second embodiment and will not be described in detail here.

[0038] Embodiment 4 The difference between this embodiment and the third embodiment is that Figure 6-Figure 8 As shown, the opening and closing driver 62 includes a rotating sleeve 621, which is coaxially arranged on the outer ring sleeve 52 and rotatably connected to the outer ring sleeve 52, each arc block 611 is located in the rotating sleeve 621, and a connecting rod 6211 is hinged between the edge of the rotating sleeve 621 and each arc block 611, and a reciprocating motor 622 is provided on the outer ring sleeve 52 for driving the rotating sleeve 621 to rotate.

[0039] When the opening and closing driver 62 is started, the reciprocating motor 622 drives the rotating shell 621 to rotate, and the connecting rod 6211 on the rotating shell 621 drives the arc block 611 to move. The moving direction of the arc block 611 is controlled according to the rotation direction of the rotating shell 621. The reciprocating motor 622 drives the rotating shell 621 to rotate back and forth, thereby controlling the intermittent opening and closing of the channel opening of the drainage channel 5.

[0040] like Figure 7 , Figure 8 and Fig.10As shown, the drainage mechanism includes a first drainage fan 72 and a second drainage fan 73. An outer sleeve 71 is sleeved on the outer ring sleeve 52. The end of the outer sleeve 71 is fixedly connected to the end of the tank body 1. An exhaust channel 7 is formed between the outer sleeve 71 and the outer ring sleeve 52. The exhaust channel 7 is connected to the drainage channel 5 and the secondary mixing chamber 22. The first drainage fan 72 is located at the channel opening of the drainage channel 5 close to the rotating cylinder 32 and between the inner cylinder 2 and the opening and closing ring member 61. The second drainage fan 73 is located at the connection between the exhaust channel 7 and the drainage channel 5.

[0041] When the helium-oxygen mixture enters the drainage channel 5, the first drainage fan 72 starts to introduce the helium-oxygen mixture in the primary mixing chamber 21, and the second drainage fan 73 starts to introduce the helium-oxygen mixture in the drainage channel 5 into the exhaust channel 7, so that the helium-oxygen mixture flows quickly to facilitate the mixing of the helium-oxygen mixture.

[0042] The rest of the structure of this embodiment is the same as that of the third embodiment and will not be described in detail here.

[0043] Embodiment 5 The present invention also provides a method for producing a helium-oxygen mixed gas for breathing, comprising the following steps: S1, introducing helium and oxygen into the helium introduction member 3 and the oxygen introduction member 4 through the helium inlet 11 and the oxygen inlet 12 respectively, and controlling the specified flow rate of the helium and oxygen by the helium electric control valve 111 and the oxygen electric control valve 121; S2, starting the helium introduction member 3 and the oxygen introduction member 4, so as to cause the helium and oxygen to contact in the primary mixing chamber 21 in the form of collision, and to mix in a large range; S3. The flow control component 6 is used to control the intermittent opening and closing of the channel opening of the drainage channel 5, so as to cause the helium-oxygen mixed gas to gradually enter the secondary mixing chamber 22 and further mix during the flow process.

[0044] The present invention guides helium and oxygen respectively through the helium introduction member 3 and the oxygen introduction member 4, so as to promote the helium and oxygen to be initially mixed in a large range in the primary mixing chamber 21, and under the control of the flow control component 6 to intermittently open and close the channel opening of the drainage channel 5, the initially mixed helium-oxygen mixed gas gradually enters the secondary mixing chamber 22, further completing the mixing, improving the mixing effect, and ensuring the quality of the helium-oxygen mixed gas.

[0045] In summary, the embodiment of the present invention provides a device and method for producing a helium-oxygen mixed gas for breathing, which respectively drains helium and oxygen through a helium inlet and an oxygen inlet, thereby promoting a large-scale preliminary mixing of helium and oxygen in a primary mixing chamber, and as the flow control component intermittently opens and closes the channel opening of the drainage channel, the preliminary mixed helium-oxygen mixed gas gradually enters the secondary mixing chamber to further complete the mixing, thereby achieving the production of the helium-oxygen mixed gas, improving the mixing effect, and ensuring the quality of the helium-oxygen mixed gas; the helium is thrown out through the air holes in the rotating cylinder as the rotating cylinder rotates, and under the action of the cyclotron force of the centrifugal plate on the helium, a collision occurs between the helium and the oxygen, thereby The mixing of helium and oxygen achieves a large-scale contact between helium and oxygen, improves the mixing effect of helium and oxygen, and improves the mixing rate of the two; after the oxygen enters the rotating sleeve, it contacts with the oxygen in a large range, and as the strip plates on the rotating sleeve stir the helium and oxygen, the helium and oxygen are mixed, thereby achieving preliminary mixing of the helium and oxygen and improving the mixing rate of the helium and oxygen; the inner ring sleeve rotates together with the rotating cylinder, so that the helium-oxygen mixture is stirred by the stirring rod in the drainage channel formed between the inner ring sleeve and the outer ring sleeve, and the stirred helium-oxygen mixture contacts the spoiler rod to be dispersed, thereby achieving further mixing of the helium-oxygen mixture, improving the mixing effect of the helium-oxygen mixture, and ensuring that the helium-oxygen mixture is mixed completely.

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

Claims

1. A device for producing a helium-oxygen mixed gas for breathing, comprising a tank body (1), wherein the end of the tank body (1) is provided with a helium inlet (11), the top of the tank body (1) is provided with an oxygen inlet (12), the bottom of the tank body (1) is provided with an air outlet (13), the helium inlet (11) and the oxygen inlet (12) are respectively provided with a helium electric control valve (111) and an oxygen electric control valve (121), wherein: The invention also comprises an inner cylinder (2), wherein the inner cylinder (2) is located inside the tank body (1), a helium inlet (3) in communication with the helium inlet (11) is provided in the hollow cavity of the inner cylinder (2), an oxygen inlet (4) located in the hollow cavity of the inner cylinder (2) is provided on the helium inlet (3), a cavity between the inner wall of the inner cylinder (2) and the helium inlet (3) forms a primary mixing cavity (21), and a cavity between the end of the inner cylinder (2) opposite to the helium inlet (11) provided on the tank body (1) and the tank body (1) forms a secondary mixing cavity (22), The oxygen inlet (12) is located in the primary mixing chamber (21), the gas outlet (13) is located in the secondary mixing chamber (22), and the end of the inner tube (2) opposite to the helium inlet (11) provided on the tank body (1) is also provided with a drainage channel (5) connected to the secondary mixing chamber (22), and the drainage channel (5) is provided with a flow control component (6) for controlling the helium-oxygen mixed gas to gradually enter the secondary mixing chamber (22) from the primary mixing chamber (21) and a drainage mechanism for introducing the helium-oxygen mixed gas in the primary mixing chamber (21) into the secondary mixing chamber (22).

2. A device for producing a helium-oxygen mixed gas for breathing according to claim 1, characterized in that: The helium introduction member (3) is provided with an air guide tube (31) coaxially fixed at both ends of the tank body (1), the air guide tube (31) being in communication with the helium inlet (11), a rotating cylinder (32) being in communication and rotatably provided between the two air guide tubes (31), the rotating cylinder (32) being located in the hollow cavity of the inner cylinder (2), the drainage channel (5) being arranged between one end of the rotating cylinder (32) and the end on the same side of the inner cylinder (2), a plurality of air holes (321) being evenly formed on the outer surface of the rotating cylinder (32), and a plurality of centrifugal plates (322) being also provided on the outer surface of the rotating cylinder (32) around the circumferential direction thereof and along the axial direction thereof, and a rotating driver (33) for driving the rotating cylinder (32) to rotate is connected to the air guide tube (31).

3. The device for producing helium-oxygen mixed gas for breathing according to claim 2, characterized in that: The oxygen introduction member (4) comprises a rotating sleeve (41), the rotating sleeve (41) being sleeved on the rotating cylinder (32), the rotating sleeve (41) being provided with a plurality of strip openings (411) around its circumferential direction and along its axial direction, the edge of each strip opening (411) being provided with a strip plate (412) extending inwardly along the radial direction of the rotating sleeve (41), both ends of the rotating sleeve (41) being provided with concentric rings (42), and the inner walls of the concentric rings (42) being symmetrically provided with two clamping plates (421) for clamping the centrifugal plates (322) therein at positions corresponding to each centrifugal plate (322).

4. The device for producing helium-oxygen mixed gas for breathing according to claim 2, characterized in that: The drainage channel (5) comprises an inner ring sleeve (51) and an outer ring sleeve (52); the inner ring sleeve (51) is coaxially sleeved on the end of the rotating cylinder (32) and fixedly connected thereto; the outer ring sleeve (52) is coaxially sleeved on the inner ring sleeve (51); the end of the outer ring sleeve (52) is connected to the end of the inner cylinder (2); between the inner ring sleeve (51) and the outer ring sleeve (52) is the drainage channel (5) which is in communication with the primary mixing chamber (21) and the secondary mixing chamber (22); the outer wall of the inner ring sleeve (51) is provided with a plurality of stirring rods (511) extending toward the inner wall of the outer ring sleeve (52) along its axial direction; and the inner wall of the outer ring sleeve (52) is provided with a spoiler rod (521) between each two adjacent stirring rods (511).

5. The device for producing helium-oxygen mixed gas for breathing according to claim 4, characterized in that: The flow control component (6) comprises an open-closed ring component (61), wherein the open-closed ring component (61) is arranged at a channel opening of the drainage channel (5) close to the rotating cylinder (32), and an open-close driver (62) for driving the open-closed ring component (61) is provided on the outer ring sleeve (52).

6. The device for producing helium-oxygen mixed gas for breathing according to claim 5, characterized in that: The opening and closing ring member (61) includes a plurality of arc blocks (611), and the plurality of arc blocks (611) are evenly distributed along the circumferential direction of the inner ring sleeve (51). Each of the arc blocks (611) can move along the axial direction of the inner ring sleeve (51). A fixing ring (63) is sleeved on the outer ring sleeve (52). A guide bar (631) is extended from the fixing ring (63) in the moving direction of each arc block (611), and each arc block (611) is provided with a sliding groove that is slidably connected to the corresponding guide bar (631).

7. The device for producing helium-oxygen mixed gas for breathing according to claim 6, characterized in that: It also includes a sealing gasket (612), wherein the sealing gasket (612) is located between the arc block (611) and the end of the inner ring sleeve (51).

8. The device for producing helium-oxygen mixed gas for breathing according to claim 6, characterized in that: The opening and closing driver (62) comprises a rotating casing (621), the rotating casing (621) being coaxially arranged on the outer ring casing (52) and rotatably connected to the outer ring casing (52), each of the arc blocks (611) being located in the rotating casing (621), a connecting rod (6211) being hinged between the edge of the rotating casing (621) and each of the arc blocks (611), and a reciprocating motor (622) for driving the rotating casing (621) to rotate is provided on the outer ring casing (52).

9. A device for producing a helium-oxygen mixed gas for breathing according to any one of claims 5 to 8, characterized in that: The drainage mechanism comprises a first drainage fan (72) and a second drainage fan (73); an outer sleeve (71) is sleeved on the outer ring sleeve (52); an end of the outer sleeve (71) is fixedly connected to an end of the tank body (1); an exhaust channel (7) is formed between the outer sleeve (71) and the outer ring sleeve (52); the exhaust channel (7) is connected to the drainage channel (5) and the secondary mixing chamber (22); the first drainage fan (72) is located at the channel opening of the drainage channel (5) close to the rotating cylinder (32) and between the inner cylinder (2) and the opening and closing ring member (61); and the second drainage fan (73) is located at the connection between the exhaust channel (7) and the drainage channel (5).

10. The method for producing helium-oxygen mixed gas for breathing of the device for producing helium-oxygen mixed gas for breathing according to claim 1, comprising the following steps: S1, introducing helium and oxygen into the helium introduction member (3) and the oxygen introduction member (4) respectively through the helium inlet (11) and the oxygen inlet (12), and controlling the specified flow rate of the helium and oxygen by the helium electric control valve (111) and the oxygen electric control valve (121); S2, starting the helium introduction member (3) and the oxygen introduction member (4), so as to cause the helium and oxygen to contact each other in the first-stage mixing chamber (21) in the form of collision, thereby performing large-scale mixing; S3, controlling the intermittent opening and closing of the channel opening of the drainage channel (5) through the flow control component (6), so as to cause the helium-oxygen mixed gas to gradually enter the secondary mixing chamber (22) and further mix during the flow process.

Images