CN218637311U

CN218637311U - Gas mixing proportioner

Info

Publication number: CN218637311U
Application number: CN202222932575.XU
Authority: CN
Inventors: 段昌生; 尤红; 蔡庸军
Original assignee: Csic Anpel Instrument Co ltd Hubei
Current assignee: Csic Anpel Instrument Co ltd Hubei
Priority date: 2022-11-03
Filing date: 2022-11-03
Publication date: 2023-03-17
Anticipated expiration: 2032-11-03

Abstract

The application discloses gas mixing proportioner relates to the relevant technical field of gas mixing for solve the unable accurate ratio of current gas mixing proportioner and the problem of intensive mixing. The gas mixing proportioner comprises a base, a cover plate, a first flow meter, a second flow meter and a gas mixing chamber, wherein the base comprises a mounting substrate and a side plate which form a box-shaped structure in a surrounding mode; the cover plate and the base cover to form an installation space; the first flowmeter is arranged on the side plate; a second flow meter is mounted on the side plate; the gas mixing chamber is installed on the mounting substrate and located in the mounting space, the gas mixing chamber top-down includes a plurality of mixing chambers that communicate each other, the port of giving vent to anger of first flowmeter and the port of giving vent to anger of second flowmeter all with be close to the apron mixing chamber intercommunication is close to the mounting substrate mixing chamber is equipped with the gas outlet, the gas outlet is used for exporting the mist after mixing.

Description

Gas mixing proportioner

Technical Field

The application relates to the technical field of gas mixing, in particular to a gas mixing proportioner.

Background

The gas mixing proportioner is a gas mixing device specially designed for gas mixing, and is widely applied to the fields of laboratories and industry. The device has the function of obtaining uniform mixed gas after mixing two gases (generally called zero gas and standard gas) according to a certain proportion so as to meet different use requirements of users. In the use process of the gas proportioning device, the air input of two different types of gases needs to be accurately controlled, and the two gases are required to be fully mixed to meet the use requirement, so that the design of the mixed gas proportioning device has higher design requirements.

The existing gas mixing mode usually adopts a simple device in the form of a three-way joint or a mixing device with a huge size, the former can not fully mix two gases, and the latter can accurately match and mix, but is not beneficial to carrying and carrying. For example, a gas mixer disclosed in patent No. CN200820059047.5 has a principle similar to a tee joint, in which two sides are gas inlets and a side surface is a mixed gas outlet, and since a chamber of one gas is directly connected to the gas outlet, the gas is easily discharged from the gas outlet without being sufficiently mixed, resulting in abnormal mixed gas ratio; in addition, the gas proportioning device disclosed in the patent No. cn202122127130.X employs a differential pressure balance control valve and a complicated gas turbulence path, so as to achieve accurate control of gas flow and sufficient gas mixing, but the gas proportioning device has a complicated structure and a large appearance, and is inconvenient to transport and carry.

To sum up, this application plans to design and develop a gas mixing ratio ware that can accurate ratio relatively and can the intensive mixing, and portable transportation.

SUMMERY OF THE UTILITY MODEL

The application provides a gas mixing proportioner, can accurate ratio and can intensive mixing, and portable.

To achieve the above object, the present application provides a gas mixing proportioner, comprising:

the base comprises a mounting substrate and a side plate which form a box-shaped structure in a surrounding mode;

the cover plate is covered with the base to form an installation space;

a first flow meter mounted on the side plate;

a second flow meter mounted on the side plate;

the gas mixing chamber is installed on the installation substrate and located in the installation space, the gas mixing chamber comprises a plurality of mixing chambers which are communicated with each other from top to bottom, the gas outlet port of the first flowmeter and the gas outlet port of the second flowmeter are both communicated with the mixing chambers which are close to the cover plate, a gas outlet is formed in the mixing chambers which are close to the installation substrate, and the gas outlet is used for outputting mixed gas after mixing.

In some embodiments of the present application, the gas mixing chamber further comprises:

a main body part having a hollow cylindrical structure;

The upper end cover is connected to the top end of the main body part and encloses with the top end of the main body part to form the mixing chamber close to the cover plate;

a mixing chamber base connected to the bottom end of the main body;

the lower end cover is connected to the bottom end of the mixing chamber base and surrounds the mixing chamber base to form the mixing chamber close to the mounting substrate;

and the air guide partition plate is arranged in the main body part, a plurality of air vents are arranged on the air guide partition plate, and the air vents are used for communicating the mixing chamber on the upper side of the air guide partition plate with the mixing chamber on the lower side of the air guide partition plate.

In some embodiments of the present application, an inner boss extending toward the center of the main body portion is formed on the inner side of the main body portion close to the upper end cover, the inner boss is provided with a first mounting hole, a first air guide joint is mounted in the first mounting hole, the first air guide joint is provided with a first air guide hole, and the first air guide hole is used for communicating the mixing chamber on the upper side of the inner boss with the mixing chamber on the lower side of the inner boss;

the mixing chamber is characterized in that a second mounting hole is formed in the mixing chamber base, a second air guide joint is mounted in the second mounting hole, a second air guide hole is formed in the second air guide joint and used for communicating the mixing chamber on the upper side of the mixing chamber base and the mixing chamber on the lower side of the mixing chamber base.

a first seal ring which hermetically connects the main body part and the upper end cover;

a second seal ring sealingly connecting the main body portion and the mixing chamber base;

and the third sealing ring is connected with the mixing chamber base and the lower end cover in a sealing manner.

In some embodiments of the present application, the gas mixture proportioner further comprises:

the first plate-penetrating pagoda joint is arranged on the side plate and is opposite to the first flowmeter, and the first plate-penetrating pagoda joint penetrates through the side plate;

the first gas pipe is connected with the first plate-penetrating pagoda joint and the gas inlet port of the first flowmeter;

the second plate penetrating pagoda joint is arranged on the side plate and is opposite to the second flowmeter, and the second plate penetrating pagoda joint penetrates through the side plate;

and the second gas transmission pipe is connected with the second tower penetrating joint and the gas inlet port of the second flowmeter.

the first right-angle quick connector is provided with a first air inlet and a second air inlet on the mixing chamber close to the cover plate and is arranged on one of the first air inlet or the second air inlet;

The first air inlet pipe is connected with the first right-angle quick connector and an air outlet port of the first flowmeter;

a second right-angle quick connector arranged on the other of the first air inlet or the second air inlet;

and the second air inlet pipe is connected with the second right-angle quick connector and the air outlet port of the second flowmeter.

the straight-through quick connector is arranged at the gas outlet of the gas mixing chamber;

the third plate-penetrating pagoda joint is arranged on the side plate and penetrates through the side plate;

and the exhaust pipe is connected with the straight-through quick-plug connector and the third board-penetrating pagoda connector.

In some embodiments of the present application, a plurality of rubber feet are provided on the mounting substrate.

In some embodiments of the present application, the cover plate is provided with a hand grip.

and a connection screw connecting the gas mixing chamber and the mounting substrate.

Therefore, when the gas mixing device is used specifically, two kinds of gas to be mixed are connected to the mixing chamber close to the cover plate through the gas outlet port of the first flow meter and the gas outlet port of the second flow meter through hoses respectively, after the hoses are connected, the corresponding valve of the gas to be mixed is opened, the flow rates of the two kinds of gas are adjusted through the adjusting knobs of the first flow meter and the second flow meter respectively so as to meet the matching requirement, and the mixed gas output from the gas outlet of the gas mixing chamber is guaranteed to be the mixed gas with the required proportion. Meanwhile, the mixing chamber comprises a plurality of mixing chambers which are communicated with each other from top to bottom, so that the space required by gas mixing can be provided, the gas flow path is prolonged, and the gas flow is stabilized, so that the two gases are fully mixed. That is, the gas mixing proportioner that this application provided simple structure, gaseous can intensive mixing even and have higher ratio precision relatively.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic diagram of a gas mixing proportioner in an embodiment of the present application;

FIG. 2 is a cross-sectional view of a gas mixing chamber in an embodiment of the present application;

FIG. 3 is a schematic view of the structure of an air directing baffle according to an embodiment of the present application;

FIG. 4 is a cross-sectional view of an air directing baffle in an embodiment of the present application;

FIG. 5 is a schematic view of the structure of a first air guide connection in an embodiment of the present application;

FIG. 6 is a schematic diagram of the connection of gas lines in the gas mixture proportioner in the embodiment of the present application.

The main reference numbers in the drawings accompanying the present specification are as follows:

1-a base; 101-a mounting substrate; 111-rubber foot pad; 102-a side plate;

2-cover plate; 201-a hand grip;

3-a first flow meter;

4-a second flow meter;

5-a gas mixing chamber; 501/502/503/504-mixing chamber; 51-a body portion; 511-inner boss; 52-upper end cap; 53-mixing chamber base; 54-lower end cap; 55-air guide baffle; 551-vent hole; 552-a sink orifice; 553-a communication hole;

6-a first gas guiding joint; 61-a first gas-guide hole; 62-a first mixing hole;

7-a second gas guide joint;

8-a first sealing ring;

9-a second sealing ring;

10-a third seal ring;

11-a first plate-through pagoda joint;

12-a first gas line;

13-a second plate-through pagoda joint;

14-a second gas delivery conduit;

15-a first right-angle quick connector;

16-a first inlet pipe;

17-a second right-angle quick connector;

18-a second intake pipe;

19-straight-through quick connector;

20-a third through-plate pagoda joint;

21-an exhaust pipe;

22-connecting screw.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present application.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be mechanically coupled, directly coupled, indirectly coupled through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in this application will be understood to be a specific case for those of ordinary skill in the art.

The present application provides a gas mixing proportioner, which is described in detail below. It should be noted that the following description of the embodiments is not intended to limit the preferred order of the embodiments in this application. In the following embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to related descriptions of other embodiments for parts that are not described in detail in a certain embodiment.

Fig. 1 is a schematic structural view of a gas mixing proportioner in an embodiment of the present application, and fig. 2 is a sectional view of a gas mixing chamber in the embodiment of the present application. Referring to fig. 1 and 2, the present application provides a gas mixing proportioner comprising a base 1, a cover plate 2, a first flow meter 3, a second flow meter 4 and a gas mixing chamber 5.

The base 1 includes a mounting substrate 101 and a side plate 102 enclosing a box-like structure. For example, the base 1 has a square box-like structure with its opening facing upward. The base 1 can be formed by assembling the mounting substrate 101 and the side plate 102, that is, the mounting substrate 101 and the side plate 102 are of a split structure. Alternatively, the mounting substrate 101 and the side plate 102 are formed as a single structure, i.e., the base 1 is formed as a single structure, so as to omit the subsequent mounting step.

The cover plate 2 and the base 1 cover to form an installation space. Specifically, the cover plate 2 covers the opening of the base 1 through threaded connection. Therefore, when the gas mixing proportioner needs maintenance, the maintenance can be carried out only by opening the cover plate 2.

The first flow meter 3 is mounted on the side plate 102, and the second flow meter 4 is mounted on the side plate 102. As shown in fig. 1 and 2, the first flowmeter 3 and the second flowmeter 4 are mounted on the same side plate 102, so as to facilitate the arrangement of the pipelines in the subsequent gas mixture proportioner. The first flowmeter 3 and the second flowmeter 4 are detachably mounted on the side plate 102, so that the first flowmeter 3 and the second flowmeter 4 can be changed in range size as required, so as to meet different use requirements. Specifically, the first flowmeter 3 and the second flowmeter 4 are glass rotameters and are fixedly mounted on the side plate 102 through plate-through threads.

The gas mixing chamber 5 is installed on the installation substrate 101 and located in the installation space, the gas mixing chamber 5 comprises a plurality of mixing chambers (501, 502, 503, 504) which are communicated with each other from top to bottom, an air outlet port (upper port) of the first flowmeter 3 and an air outlet port (upper port) of the second flowmeter 4 are both communicated with the mixing chamber (namely, the mixing chamber 501) close to the cover plate 2, an air outlet is arranged on the mixing chamber (namely, the mixing chamber 504) close to the installation substrate 101, and the air outlet is used for outputting mixed gas. It can also be understood that a first gas inlet and a second gas inlet are provided on the mixing chamber (i.e. the mixing chamber 501) close to the cover plate 2, wherein one of the first gas inlet and the second gas inlet is communicated with the gas outlet port of the first flow meter 3, and the other of the first gas inlet and the second gas inlet is communicated with the gas outlet port of the second flow meter 4.

Therefore, when the gas mixing device is used specifically, two kinds of gas to be mixed are connected to the mixing chamber (namely the mixing chamber 501) close to the cover plate 2 through the gas outlet port of the first flowmeter 3 and the gas outlet port of the second flowmeter 4 through hoses respectively, after the hose connection is completed, a valve of the corresponding gas to be mixed is opened, the flow rates of the two kinds of gas are adjusted through adjusting knobs arranged on the first flowmeter 3 and the second flowmeter 4 respectively so as to achieve proportioning requirements, and the mixed gas output through the gas outlet of the gas mixing chamber 5 is guaranteed to be the mixed gas in a required proportion. Meanwhile, the gas mixing chamber 5 includes a plurality of mixing chambers (501, 502, 503, 504) communicating with each other from top to bottom, which can provide a space required for gas mixing, extend a gas flow path and stabilize a gas flow, so that two gases are sufficiently mixed. That is, the gas mixing proportioner that this application provided simple structure, gaseous can intensive mixing even and have higher ratio precision relatively.

It is emphasized that, when the first flowmeter 3 and the second flowmeter 4 are initially adjusted, there may be a delay in the mixing of the gas in the gas mixing chamber 5, and the mixing ratio may differ greatly from the target, it is recommended to release a part of the mixed gas first, and store or use the mixed gas after the flow rates of the gas output through the first flowmeter 3 and the second flowmeter 4 are stabilized.

In some embodiments of the present application, the gas mixing chamber 5 includes a main body portion 51, an upper end cap 52, a mixing chamber base 53, a lower end cap 54, and an gas directing baffle 55. The main body 51 is made of teflon and is a hollow cylindrical structure, the upper end cover 52 is made of stainless steel and is connected to the top end of the main body 51, and encloses with the top end of the main body 51 to form the mixing chamber (i.e. mixing chamber 501) close to the cover plate 2, the mixing chamber base 53 is made of stainless steel and is connected to the bottom end of the main body 51, the lower end cover 54 is connected to the bottom end of the mixing chamber base 53 and encloses with the mixing chamber base 53 to form the mixing chamber (i.e. mixing chamber 504) close to the mounting substrate 101, the air guide partition 55 is made of teflon and is arranged in the main body 51, and is provided with a plurality of vent holes 551, the vent holes 551 are used for communicating the mixing chamber (i.e. mixing chamber 502) on the upper side of the air guide partition 55 and the mixing chamber (i.e. mixing chamber 503) on the lower side of the air guide partition 55, and the vent holes 551 can prolong the flow path of two mixed gases and achieve the effect of stabilizing the gas flow, thereby ensuring that the two gases are fully mixed. That is, the above components in the gas mixing chamber 5 are assembled to form 4 mixing chambers, so that a space required for gas mixing can be provided, a plurality of gas flow turbulence paths in the 4 mixing chambers can be provided to achieve sufficient gas mixing, and the structure of the gas mixing chamber 5 is simple and easy to implement.

FIG. 3 is a schematic view of the structure of an air directing baffle according to an embodiment of the present application, and FIG. 4 is a cross-sectional view of an air directing baffle according to an embodiment of the present application. Referring to fig. 3 and 4, the air guide partition plate 55 is disc-shaped, and a plurality of air holes 551 are uniformly distributed on the air guide partition plate 55 along the circumferential direction, the air holes 551 axially penetrate through the top end of the air guide partition plate 55 but do not penetrate through the bottom end of the air guide partition plate 55, a confluence hole 552 is disposed in the center of the air guide partition plate 55 and penetrates through the bottom end of the air guide partition plate 55 but does not penetrate through the top end of the air guide partition plate 55, and the bottom ends of the air holes 551 are respectively communicated with the confluence hole 552 through respective corresponding communication holes 553 extending along the radial direction of the air guide partition plate 55, thereby further ensuring that the flow path of the two mixed gases in the air guide partition plate 55 is extended. Alternatively, the air vent holes 551 of the air guide partition plate 55 may vertically penetrate the air guide partition plate 55. Wherein the diameter of the air vent 551 is smaller than that of the confluent hole 552, and the diameter of the communication hole 553 is substantially equal to that of the air vent 551.

It will be appreciated that FIG. 2 shows an embodiment in which only one layer of air directing baffle 55 is provided, although multiple layers of air directing baffles 55 may be provided within the body portion 51.

Fig. 5 is a schematic structural diagram of a first air guide joint in an embodiment of the present application, referring to fig. 2 and 5, an inner boss 511 extending toward the center of the main body 51 is formed on the inner side of the upper end cover 52, a first mounting hole is formed in the inner boss 511, a first air guide joint 6 is mounted in the first mounting hole, a first air guide hole 61 is formed in the first air guide joint 6, and the first air guide hole 61 is used for communicating the mixing chamber (i.e., the mixing chamber 501) on the upper side of the inner boss 511 with the mixing chamber (i.e., the mixing chamber 502) on the lower side of the inner boss 511, so as to ensure that the two mixed gases are fully mixed in the first air guide joint 6. Illustratively, the first air guide holes 61 extend along the radial direction, the radial outer side of the first air guide holes 61 penetrates through the first air guide joint 6, the first air guide holes 61 are provided with first mixing holes 62 extending along the axial direction of the first air guide holes, and the radial inner sides of the first air guide holes 61 are communicated with the first mixing holes 62.

Similarly, a second mounting hole is formed in the mixing chamber base 53, a second air guide joint 7 is mounted in the second mounting hole, a second air guide hole is formed in the second air guide joint 7, and the second air guide hole is used for communicating the mixing chamber (namely, the mixing chamber 503) on the upper side of the mixing chamber base 53 with the mixing chamber (namely, the mixing chamber 504) on the lower side of the mixing chamber base 53.

For example, the first mounting hole and the second mounting hole are internally threaded holes, the first air guide joint and the second air guide joint are configured like a hexagon bolt, that is, the first air guide joint and the second air guide joint are hexagonal joints, both of which have a threaded connection part connected with the internally threaded hole and a head part, the head part is provided with a plurality of air guide holes extending in the radial direction and penetrating through the head part, the threaded connection part is provided with a mixing hole extending in the axial direction thereof, and the radial inner sides of the plurality of air guide holes are communicated with the mixing hole. Wherein the diameter of the air guide hole is smaller than that of the mixing hole. Wherein, the first gas guide joint and the second gas guide joint are made of stainless steel materials so as to avoid corrosion by acid and alkali gases.

With continued reference to fig. 2, the gas mixing chamber 5 further comprises a first seal ring 8, a second seal ring 9, and a third seal ring 10. The first sealing ring 8 is connected with the main body 51 and the upper end cover 52 in a sealing manner, the second sealing ring 9 is connected with the main body 51 and the mixing chamber base 53 in a sealing manner, and the third sealing ring 10 is connected with the mixing chamber base 53 and the lower end cover 54 in a sealing manner. Wherein the first seal ring 8 is fitted in a groove on the outer peripheral surface of the upper end cap 52, the second seal ring 9 is fitted in a groove on the outer peripheral surface of the mixing chamber base 53, and the third seal ring 10 is fitted in a groove on the outer peripheral surface of the lower end cap 54. This arrangement thus ensures that the gas in the mixing chamber flows through the first gas directing connection 6, the gas directing partition 55 and the second gas directing connection 7 in sequence.

Fig. 6 is a schematic connection diagram of a gas pipeline in a gas mixture proportioning device in the embodiment of the application, and referring to fig. 1 and 6, the gas mixture proportioning device further includes a first plate-through pagoda joint 11, a first gas pipe 12, a second plate-through pagoda joint 13, and a second gas pipe 14. The first plate-penetrating pagoda joint 11 is arranged on the side plate 102 and opposite to the first flowmeter 3, the first plate-penetrating pagoda joint 11 penetrates through the side plate 102, and when the gas storage tank is used specifically, only one end of the first plate-penetrating pagoda joint 11, which extends out of the side plate 102, needs to be connected to the first gas storage tank. The first air pipe 12 is connected with the first plate-penetrating pagoda joint 11 and the air inlet port of the first flowmeter 3. Similarly, a second plate-through pagoda joint 13 is arranged on the side plate 102 and is opposite to the second flowmeter 4, the second plate-through pagoda joint 13 penetrates through the side plate 102, and a second gas pipe 14 is connected with the second plate-through pagoda joint 13 and the gas inlet port of the second flowmeter 4. It is understood that the first plate-penetrating pagoda joint 11 and the second plate-penetrating pagoda joint 13 are plate-penetrating quick-insertion rotating pagoda joints.

The gas mixing and proportioning device further comprises a first right-angle quick-connection-plug connector 15, a first gas inlet pipe 16, a second right-angle quick-connection-plug connector 17 and a second gas inlet pipe 18, the first right-angle quick-connection-plug connector 15 is arranged at the first gas inlet and is convenient to be connected with a gas outlet port of the first flowmeter 3 through the first gas inlet pipe 16, and the second right-angle quick-connection-plug connector 17 is arranged at the second gas inlet and is convenient to be connected with a gas outlet port of the second flowmeter 4 through the second gas inlet pipe 18.

Of course, the first right-angle quick-plug connector 15 may also be disposed at the second air inlet and connected to the air outlet of the first flowmeter 3 through the first air inlet pipe 16, and the second right-angle quick-plug connector 17 may also be disposed at the first air inlet and connected to the air outlet of the second flowmeter 4 through the second air inlet pipe 18.

In order to discharge the mixed gas mixed by the gas mixing chamber 5, the gas mixing proportioner further comprises a through quick-connect plug 19 (reference numeral is shown in fig. 1), a third through-plate pagoda joint 20 and an exhaust pipe 21. The through quick-connection plug 19 is arranged at the gas outlet of the gas mixing chamber 5 to realize the export of the mixed gas. The third plate penetrating pagoda joint 20 is arranged on the side plate 102 and penetrates through the side plate 102, and the exhaust pipe 21 is connected with the through quick-inserting joint 19 and the third plate penetrating pagoda joint 20. The mixed gas is discharged from the gas mixing proportioner through one end of the third through-plate pagoda joint 20 extending out of the side plate 102, so as to be collected or stored in the next step.

The first right-angle quick-plug connector 15, the second right-angle quick-plug connector 17 and the straight-through quick-plug connector 19 can provide interfaces for gas transmission, and the first plate penetrating tower joint 11, the second plate penetrating tower joint 13 and the third plate penetrating tower joint 20 are used for gas inlet outside the gas mixing proportioner and gas outlet of mixed gas so as to realize quick disassembly of a pipeline.

With continued reference to fig. 1, a plurality of rubber pads 111 are disposed on the mounting substrate 101 to achieve stable placement of the gas mixing proportioner and also to achieve a certain anti-vibration effect, and the rubber pads 111 are connected to the mounting substrate 101 by screws. In order to connect the gas mixing chamber 5 and the mounting substrate 101, the gas mixing and proportioning device further includes a plurality of connection screws 22. Each of the connection screws 22 includes a screw, a nut, a washer, and the like. In addition, be equipped with on the apron 2 and hold portion 201, from this when needs carry this gas mixture ratio ware of transportation, can directly hand hold portion 201 and easily carry gas mixture ratio ware, convenient and fast.

In conclusion, the outstanding advantage of the mixed gas proportioner that the application provides lies in that can make two kinds of gas rapid homogeneous mixing, the flowmeter (first flowmeter 3 and second flowmeter 4) can change, the precision is controllable according to the in-service use condition, the complete machine is light, and convenient to transport carries.

The particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims. In addition, the principle and the implementation manner of the present application are explained by applying specific examples in the specification, the above description of the embodiments is only for helping understanding the method and the core idea of the present application, and the content of the present application should not be construed as limiting the present application.

Claims

1. A gas mixing proportioner, comprising:

the base comprises a mounting substrate and a side plate which are enclosed into a box-shaped structure;

the cover plate is covered with the base to form an installation space;

a first flow meter mounted on the side plate;

a second flow meter mounted on the side plate;

the gas mixing chamber is installed on the mounting substrate and located in the mounting space, the gas mixing chamber top-down comprises a plurality of mixing chambers which are communicated with each other, the air outlet port of the first flowmeter and the air outlet port of the second flowmeter are both close to the cover plate, the mixing chambers are communicated and close to the mounting substrate, and the gas outlet is used for outputting mixed gas after mixing.

2. The gas mixing proportioner of claim 1 wherein the gas mixing chamber further comprises:

a main body part having a hollow cylindrical structure;

a mixing chamber base connected to the bottom end of the main body;

And the air guide partition plate is arranged in the main body part and is provided with a plurality of air vents, and the air vents are used for communicating the mixing chamber on the upper side of the air guide partition plate with the mixing chamber on the lower side of the air guide partition plate.

3. The gas mixing proportioner of claim 2, wherein the main body part is provided with an inner boss extending towards the center of the main body part, the inner boss is provided with a first mounting hole, a first air guide joint is mounted in the first mounting hole, the first air guide joint is provided with a first air guide hole, and the first air guide hole is used for communicating the mixing chamber on the upper side of the inner boss with the mixing chamber on the lower side of the inner boss;

the mixing chamber is characterized in that a second mounting hole is formed in the mixing chamber base, a second air guide joint is mounted in the second mounting hole, a second air guide hole is formed in the second air guide joint and is used for communicating the mixing chamber on the upper side of the mixing chamber base and the mixing chamber on the lower side of the mixing chamber base.

4. The gas mixing proportioner of claim 2 wherein the gas mixing chamber further comprises:

The first sealing ring is used for sealing and connecting the main body part and the upper end cover;

a second seal ring hermetically connecting the main body part and the mixing chamber base;

5. The gas mixing proportioner of claim 1 and further comprising:

the second plate-penetrating pagoda joint is arranged on the side plate and is opposite to the second flowmeter, and the second plate-penetrating pagoda joint penetrates through the side plate;

6. The gas mixing proportioner of claim 1 and further comprising:

7. The gas mixing proportioner of claim 1 and further comprising:

8. The gas mixing proportioner of claim 1 wherein the mounting substrate is provided with a plurality of rubber feet.

9. The gas mixing proportioner of claim 1 wherein the cover plate is provided with a hand grip.

10. The gas mixing proportioner of claim 1 and further comprising: