Gas mixing device and system

Abstract

The utility model relates to a gas mixing device and system. The gas mixing device comprises an input unit, a plurality of mixing units and an output unit, the gas mixing device has the advantages that different gases are preliminarily mixed by utilizing the input unit, and the conveying speed of the gases can be respectively adjusted so as to control the mixing proportion of the different gases of the mixed gas; the mixing units are communicated with the input unit, the mixing units are arranged to be of a symmetrical structure, the multiple mixing units are sequentially connected, mixed gas is subjected to multi-stage mixing, the gas mixing uniformity is improved through continuous backflow, and the mixed gas is output through the output unit; the device is simple and small in structure, the internal space of the mixing unit is a gas mixing area, multi-stage mixing can be realized, different gases can be fully mixed, the gas mixing uniformity is high, the mixing time is short, and the mixing efficiency is greatly improved; when the device is used for gas mixing, plug and play can be realized, and the device is convenient to use.

Description

Technical Field

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

[0002] In the industrial and scientific research fields, it is usually necessary to mix different types of gases to achieve specific chemical reactions or meet process requirements.

[0003] In the prior art, patent CN117599628A discloses an ammonia-air mixer based on a Tesla valve structure, which includes a mixer housing. One end of the mixer housing is provided with a dilution air inlet, the other end of the mixer housing is provided with a mixed gas outlet, and a flow disturbance structure is arranged inside the mixer housing, and the flow disturbance structure is a Tesla valve structure; an activity cover plate is arranged at the top opening of the mixer housing, the outlet end of the ammonia main pipe is communicated with the ammonia supply pipe orifice on the activity cover plate, and a plurality of ammonia branch pipes are communicated with the outlet end of the ammonia main pipe, and the outlets of the ammonia branch pipes are located above the flow disturbance structure.

[0004] The above gas mixing device can make the gas mix evenly to a certain extent, but there are also some problems, such as: it occupies a large area and is not conducive to use in small spaces; and it requires a large number of components, which is not convenient for assembly, disassembly and maintenance; on the other hand, the internal space of the gas mixing device is large, and the unmixed gas filling outside the mixing structure will be carried to the outlet by the mixed gas, resulting in problems such as reduced uniformity of the mixed gas; at the same time, after the air enters the mixing device, due to being continuously accelerated by the multi-stage Tesla valve structure, the ammonia concentration entrained will be relatively low due to too high speed, thus reducing the uniformity of the mixed gas.

[0005] Aiming at the problems of large volume, complex structure, reduced uniformity of mixed gas, long mixing time, etc. existing in the related technology, no effective solution has been proposed yet. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a gas mixing device and system for the deficiencies in the prior art, so as to solve the problems of large volume, complex structure, reduced uniformity of mixed gas, long mixing time, etc. existing in the related technology.

[0007] To achieve the above purpose, the technical solution adopted by the utility model is:

[0008] The first aspect of the utility model is to provide a gas mixing device, including:

[0009] An input unit, which is respectively communicated with a plurality of gas supply devices and is used for obtaining a plurality of gases transmitted by the plurality of gas supply devices;

[0010] A number of mixing units, a number of the mixing units are connected in sequence, the mixing unit at the head end is in communication with the input unit, and each of the mixing units is symmetrically arranged for mixing a number of gases to form a mixed gas;

[0011] An output unit, the output unit is in communication with the mixing unit at the end for outputting the mixed gas.

[0012] In some embodiments thereof, the input unit includes:

[0013] A number of first input elements, a number of the first input elements are respectively in communication with corresponding a number of gas supply devices for respectively obtaining a number of gases transmitted by the a number of gas supply devices;

[0014] A second input element, the head end of the second input element is respectively in communication with a number of the first input elements, and the end of the second input element is in communication with the mixing unit at the head end for conveying a number of gases to the mixing unit.

[0015] In some embodiments thereof, the input unit further includes:

[0016] A number of valve elements, a number of the valve elements are respectively arranged on corresponding the first input elements for controlling the flow rate of the gases conveyed by the first input elements.

[0017] In some embodiments thereof, the mixing unit includes:

[0018] A third input element, the head end of the third input element is in communication with the end of the input unit or the end of another mixing unit, and the end of the third input element is in communication with the head end of the output unit or the head end of another mixing unit for conveying gases;

[0019] A first reflux element, the head end of the first reflux element is in communication with the head end of the third input element, the end of the first reflux element is in communication with the end of the third input element, and the first reflux element is in communication with the first reflux element of another mixing unit for conveying gases to the third input element to mix the gases in the third input element;

[0020] A second reflux element, the head end of the second reflux element is in communication with the head end of the third input element, the end of the second reflux element is in communication with the end of the third input element, and the second reflux element is in communication with the second reflux element of another mixing unit for conveying gases to the third input element to mix the gases in the third input element.

[0021] In some embodiments thereof, the output unit includes:

[0022] An output component, the head end of the output component is communicated with the end of the mixing unit located at the end, and is used for outputting the mixed gas.

[0023] In some embodiments thereof, the gas mixing device further includes:

[0024] A first shunt unit, the first shunt unit is arranged at the communication position between the input unit and the mixing unit and is used for shunting.

[0025] In some embodiments thereof, the first shunt unit includes:

[0026] A first shunt element, the first shunt element is arranged at the communication position between the input unit and the mixing unit and is used for shunting.

[0027] In some embodiments thereof, the gas mixing device further includes:

[0028] A plurality of disturbance units, the plurality of disturbance units are respectively arranged at the ends of the corresponding mixing units and are used for forming eddy currents.

[0029] In some embodiments thereof, the disturbance unit includes:

[0030] A disturbance element, the disturbance element is arranged at the end of the corresponding mixing unit and is used for forming eddy currents.

[0031] In some embodiments thereof, the gas mixing device further includes:

[0032] At least one second shunt unit, the second shunt unit is arranged in the input unit and is used for shunting.

[0033] In some embodiments thereof, the second shunt unit includes:

[0034] A second shunt element, the second shunt element is arranged in the input unit and is used for shunting.

[0035] In some embodiments thereof, the gas mixing device further includes:

[0036] A plurality of third shunt units, the plurality of third shunt units are respectively arranged in the corresponding plurality of mixing units and are used for shunting.

[0037] In some embodiments thereof, the third shunt unit includes:

[0038] A third shunt element, the third shunt element is arranged in the corresponding mixing unit and is used for shunting.

[0039] The second aspect of the present utility model is to provide a gas mixing system, including:

[0040] The gas mixing device as described in the first aspect of the claims;

[0041] A driving device, which is connected to the gas mixing device and is used to drive the flow of the mixed gas in the gas mixing device;

[0042] A control device, which is respectively connected to the gas mixing device and the driving device, and is used to control the flow rate of the gas in the gas mixing device, the mixing ratio of the gases, and the working states of the gas mixing device and the driving device.

[0043] Adopting the above technical solutions, compared with the prior art, the utility model has the following technical effects:

[0044] A gas mixing device and system of the utility model preliminarily mixes different gases by using an input unit, and can respectively adjust the conveying speed of the gases to control the mixing ratio of different gases in the mixed gas; the mixing unit is communicated with the input unit, and the mixing unit is set as a symmetrical structure, and a plurality of mixing units are arranged to be connected in sequence to perform multi-stage mixing on the mixed gas, and the uniformity of gas mixing is increased by continuous reflux and eddy current. The mixed gas is output through an output unit after being uniformly mixed; the device has a simple and compact structure, the internal space of the mixing unit is all the areas for gas mixing, and can perform multi-stage mixing, fully mixing different gases, with a high gas mixing uniformity, a short mixing time, and greatly improving the mixing efficiency; when using this device for gas mixing, it can be plugged and used immediately, which is convenient to use, and solves the problems of large volume, complex structure, reduced uniformity of mixed gas, and long mixing time of the mixing device. Description of the Drawings

[0045] Figure 1 is a schematic diagram (one) of the gas mixing device according to an embodiment of the utility model;

[0046] Figure 2 is a schematic diagram of the input unit according to an embodiment of the utility model;

[0047] Figure 3 is a schematic diagram of the mixing unit according to an embodiment of the utility model;

[0048] Figure 4 is a schematic diagram of the output unit according to an embodiment of the utility model;

[0049] Figure 5 is a schematic diagram (two) of the gas mixing device according to an embodiment of the utility model;

[0050] Figure 6 is a schematic diagram of the first shunt unit according to an embodiment of the utility model;

[0051] Figure 7 Schematic diagram (III) of the gas mixing device according to an embodiment of the present utility model;

[0052] Figure 8 Schematic diagram of the interference unit according to an embodiment of the present utility model;

[0053] Figure 9 Schematic diagram (IV) of the gas mixing device according to an embodiment of the present utility model;

[0054] Figure 10 Schematic diagram of the second shunt unit according to an embodiment of the present utility model;

[0055] Figure 11 Schematic diagram (V) of the gas mixing device according to an embodiment of the present utility model;

[0056] Figure 12 Schematic diagram of the third shunt unit according to an embodiment of the present utility model.

[0057] The reference numerals therein are:

[0058] 10. Input unit; 11. First input element; 12. Second input element; 13. Valve element;

[0059] 20. Mixing unit; 21. Third input element; 22. First reflux element; 23. Second reflux element;

[0060] 30. Output unit; 31. Output element;

[0061] 40. First shunt unit; 41. First shunt element;

[0062] 50. Disturbance unit; 51. Disturbance element;

[0063] 60. Second shunt unit; 61. Second shunt element;

[0064] 70. Third shunt unit; 71. Third shunt element. Detailed implementation manners

[0065] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be described and explained below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments provided in the present application without making creative efforts belong to the scope of protection of the present application.

[0066] Obviously, the accompanying drawings in the following description are only some examples or embodiments of the present application. For those of ordinary skill in the art, without creative efforts, the present application can also be applied to other similar scenarios based on these drawings. In addition, it can also be understood that although the efforts made in such a development process may be complex and lengthy, for those of ordinary skill in the art related to the content disclosed in the present application, some design, manufacturing, or production changes based on the technical content disclosed in the present application are only conventional technical means and should not be understood as the content disclosed in the present application being insufficient.

[0067] The mention of "embodiment" in the present application means that the specific features, structures, or characteristics described in combination with the embodiment can be included in at least one embodiment of the present application. The appearance of this phrase at various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those of ordinary skill in the art explicitly and implicitly understand that the embodiments described in the present application can be combined with other embodiments without conflict.

[0068] Unless otherwise defined, the technical terms or scientific terms involved in the present application should have the ordinary meaning understood by those with ordinary skills in the technical field to which the present application belongs. The words such as "a", "an", "one kind", "the" and the like involved in the present application do not represent a quantity limitation and can represent a singular or plural number. The terms "including", "comprising", "having" and any variations thereof involved in the present application are intended to cover non-exclusive inclusion; for example, a process, method, system, product or device including a series of steps or units (units) is not limited to the listed steps or units, but may further include unlisted steps or units, or may further include other steps or units inherent to these processes, methods, products or devices. The terms "connected", "coupled" and the like involved in the present application are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The "plurality" involved in the present application means two or more. "And / or" describes the association relationship of associated objects and indicates that three relationships can exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after. The terms "first", "second", "third" and the like involved in the present application are only used to distinguish similar objects and do not represent a specific order for the objects.

[0069] Embodiment 1

[0070] This embodiment relates to a gas mixing device of the present utility model.

[0071] An illustrative embodiment of the present utility model is as follows: Figure 1 As shown, a gas mixing device comprises an input unit 10, a plurality of mixing units 20 and an output unit 30. The input unit 10 is respectively connected to a plurality of gas supply devices for obtaining a plurality of gases transmitted by the plurality of gas supply devices; the plurality of mixing units 20 are connected in sequence, the mixing unit 20 at the head end is connected to the input unit 10, each mixing unit 20 is symmetrically arranged, and is used to mix a plurality of gases to form a mixed gas; the output unit 30 is connected to the mixing unit 20 at the end for outputting the mixed gas.

[0072] In the present invention, the mixing unit 20 is a Tesla valve.

[0073] The plurality of mixing units 20 form a first-stage mixing unit, a second-stage mixing unit, ..., an nth-stage mixing unit, wherein n is the number of the mixing units 20, and n is selected according to the use requirements. Generally, n≥2.

[0074] like Figure 2 As shown, the input unit 10 includes a plurality of first input elements 11 and a second input element 12. The plurality of first input elements 11 are respectively connected to the corresponding plurality of gas supply devices, and are used to respectively obtain a plurality of gases transmitted by the plurality of gas supply devices; the head ends of the second input elements 12 are respectively connected to the plurality of first input elements 11, and the tail ends of the second input elements 12 are connected to the mixing unit 20 located at the head end, and are used to deliver a plurality of gases to the mixing unit 20.

[0075] A plurality of first input elements 11 are arranged at intervals along the axial direction of the second input element 12 .

[0076] In some of the embodiments, the first input element 11 is a branch gas delivery pipeline.

[0077] The second input element 12 is connected to the first input element 11 in a fixed connection or a detachable connection. The fixed connection includes but is not limited to welding; the detachable connection includes but is not limited to flange connection.

[0078] The size of the second input element 12 matches the size of the first input element 11. Generally, the radial size (eg, outer diameter) of the second input element 12 is not less than the size (eg, outer diameter) of the first input element 11.

[0079] In some embodiments, the second input element 12 is a first mixed gas delivery pipeline.

[0080] Furthermore, the input unit 10 further includes a plurality of valve elements 13 , wherein the plurality of valve elements 13 are respectively disposed at the corresponding first input elements 11 , and are used to control the flow rate of the gas delivered by the first input elements 11 .

[0081] The number of valve elements 13 matches the number of first input elements 11. Generally, the number of valve elements 13 is equal to the number of first input elements 11.

[0082] In some of these embodiments, the valve element 13 is a regulating valve.

[0083] As Figure 3 shown, the mixing unit 20 includes a third input element 21, a first return element 22, and a second return element 23. Among them, the head end of the third input element 21 communicates with the tail end of the input unit 10 or the tail end of another mixing unit 20, and the tail end of the third input element 21 communicates with the head end of the output unit 30 or the head end of another mixing unit 20 that communicates with the head end of the mixing unit 20, for transporting gas; the head end of the first return element 22 communicates with the head end of the third input element 21, the tail end of the first return element 22 communicates with the tail end of the third input element 21, and the first return element 22 communicates with the first return element 22 of another mixing unit 20, for transporting gas to the third input element 21 to mix the gas in the third input element 21; the head end of the second return element 23 communicates with the head end of the third input element 21, the tail end of the second return element 23 communicates with the tail end of the third input element 21, and the second return element 23 communicates with the second return element 23 of another mixing unit 20, for transporting gas to the third input element 21 to mix the gas in the third input element 21.

[0084] Specifically, the head end of the third input element 21 communicates with the second input element 12.

[0085] The connection mode between the third input element 21 and the second input element 12 is a fixed connection or a detachable connection. Among them, the fixed connection mode includes but is not limited to welding and integral molding; the detachable connection mode includes but is not limited to flange connection.

[0086] The connection mode between the third input element 21 and the third input element 21 of the adjacent mixing unit 20 is a fixed connection. Among them, the fixed connection mode includes but is not limited to welding and integral molding.

[0087] The size of the third input element 21 matches the size of the second input element 12. Generally, the radial dimensions (such as outer diameter, length, width) of the third input element 21 are not greater than the radial dimensions (such as outer diameter, length, width) of the second input element 12.

[0088] In some of these embodiments, the third input element 21 is a second mixed gas delivery pipe.

[0089] The first return element 22 is arranged in an arc shape.

[0090] The first reflux element 22 is fixedly connected to the third input element 21. The fixed connection methods include, but are not limited to, integral molding and welding.

[0091] The first reflux element 22 of the first reflux element 22 of the first reflux element 22 and the adjacent mixing unit 20 is fixedly connected. The fixed connection methods include, but are not limited to, welding and integral molding.

[0092] The size of the first reflux element 22 matches the size of the third input element 21. Generally, the radial dimensions (such as outer diameter, length, width) of the first reflux element 22 are not greater than the radial dimensions (such as outer diameter, length, width) of the third input element 21, the axial length of the first reflux element 22 is not greater than the axial dimension (such as length) of the third input element 21, and the arc length of the first reflux element 22 is greater than the length of the third input element 21.

[0093] In some embodiments, the first reflux element 22 is the first reflux pipeline.

[0094] The second reflux element 23 is arranged in an arc shape.

[0095] The second reflux element 23 is fixedly connected to the third input element 21. The fixed connection methods include, but are not limited to, integral molding and welding.

[0096] The second reflux element 23 of the second reflux element 23 of the second reflux element 23 and the adjacent mixing unit 20 is fixedly connected. The fixed connection methods include, but are not limited to, welding and integral molding.

[0097] The size of the second reflux element 23 matches the size of the third input element 21. Generally, the radial dimensions (such as outer diameter, length, width) of the second reflux element 23 are not greater than the radial dimensions (such as outer diameter, length, width) of the third input element 21, the linear axial dimension of the second reflux element 23 is not greater than the axial dimension (such as length) of the third input element 21, and the arc length of the second reflux element 23 is greater than the length of the third input element 21.

[0098] The size of the second reflux element 23 matches the size of the first reflux element 22. Generally, the radial dimension (such as outer diameter) of the second reflux element 23 is equal to the radial dimension (such as outer diameter) of the first reflux element 22, and the axial dimensions (such as arc length, axial length) of the second reflux element 23 are equal to the axial dimensions (such as arc length, axial length) of the first reflux element 22.

[0099] The shape of the second reflux element 23 matches the shape of the first reflux element 22. Generally, the shape of the second reflux element 23 is equal to the shape of the first reflux element 22.

[0100] In some of these embodiments, the second reflux element 23 is a second reflux pipeline.

[0101] As Figure 4 shown, the output unit 30 includes an output element 31. Among them, the head end of the output element 31 communicates with the end of the mixing unit 20 located at the end, and is used to output the mixed gas.

[0102] Specifically, the output element 31 communicates with the third input element 21.

[0103] The connection manner between the output element 31 and the third input element 21 is a fixed connection or a detachable connection. Among them, the fixed connection manner includes but is not limited to integral molding and welding; the detachable connection manner includes but is not limited to flange connection.

[0104] The size of the output element 31 matches the size of the third input element 21. Generally, the radial dimensions (such as outer diameter, length, width) of the output element 31 are not less than the radial dimensions (such as outer diameter, length, width) of the third input element 21.

[0105] In some of these embodiments, the output element 31 is a third mixed gas delivery pipeline.

[0106] The usage method of the present utility model is as follows:

[0107] A number of gas supply devices respectively supply gas to a number of corresponding first input elements 11;

[0108] The gas from a number of first input elements 11 converges into the second input element 12 to form a mixed gas;

[0109] The mixed gas enters the first-stage mixing unit 20, and the mixed gas is divided into three airflows. The first airflow enters the third input element 21, the second airflow enters the first reflux element 22, and the third airflow enters the second reflux element 23;

[0110] A part of the second airflow enters the first reflux element 22 of the next-stage mixing unit 20;

[0111] A part of the second airflow returns to the third input element 21 via the first reflux element 22 and is mixed with the first airflow;

[0112] A part of the third airflow enters the second reflux element 23 of the next-stage mixing unit 20;

[0113] A part of the third airflow returns to the third input element 21 via the second reflux element 23 and is mixed with the first airflow and the second airflow;

[0114] A part of the mixed gas after the first airflow, the second airflow, and the third airflow are mixed enters the next-stage mixing unit 20;

[0115] A part of the mixed gas after the first air flow, the second air flow, and the third air flow are mixed is mixed with the mixed gas that has just entered the third input element 21 again and is split into three air flows, and then enters the third input element 21, the first reflux element 22, and the second reflux element 23 respectively again;

[0116] The mixed gas after being mixed by the multi-stage mixing unit 20 is output outward through the output element 31.

[0117] The technical effects of the present utility model are as follows:

[0118] The input unit is used to preliminarily mix different gases, and can separately adjust the conveying speed of the gases to control the mixing ratio of different gases in the mixed gas; the mixing unit is connected to the input unit, and the mixing unit is set as a symmetrical structure, and several mixing units are connected in sequence to perform multi-stage mixing on the mixed gas, and the uniformity of gas mixing is increased by continuous reflux. The mixed gas is output through the output unit; the structure of this device is simple and compact, the internal space of the mixing unit is all areas for gas mixing, and it can perform multi-stage mixing, fully mixing different gases, with a high uniformity of gas mixing, a short mixing time, and greatly improving the mixing efficiency; when using this device for gas mixing, it can be plugged and used immediately, which is convenient to use, and solves the problems of large volume, complex structure, reduced uniformity of mixed gas, and long mixing time of the mixing device.

[0119] Embodiment 2

[0120] This embodiment is a variant embodiment of Embodiment 1.

[0121] As Figure 5 shown, the gas mixing device further includes a first shunt unit 40. Among them, the first shunt unit 40 is arranged at the connection position between the input unit 10 and the mixing unit 20 for shunting.

[0122] As Figure 6 shown, the first shunt unit 40 includes a first shunt element 41. Among them, the first shunt element 41 is arranged at the connection position between the input unit 10 and the mixing unit 20 for shunting.

[0123] Specifically, the first shunt element 41 is arranged at the connection between the end of the second input element 12 and the third input element 21 located at the head end.

[0124] The cross-section of the first shunt element 41 is circular.

[0125] The connection method between the first shunt element 41 and the third input element 21 is a fixed connection or a detachable connection. Among them, the fixed connection method includes but is not limited to integral molding and welding; the detachable connection method includes but is not limited to snap connection and flange connection.

[0126] The size of the first shunt element 41 matches the size of the third input element 21. Generally, the radial dimension (such as the outer diameter) of the first shunt element 41 is smaller than the radial dimension (such as the outer diameter) of the third input element 21, and the height of the first shunt element 41 is not greater than the radial dimension (such as the height) of the third input element 21.

[0127] In some of these embodiments, the first shunt element 41 is a first shunt column.

[0128] The usage method of this embodiment is as follows:

[0129] The initial mixed gas is input into the third input element 21 through the second input element 12. Under the action of the first shunt element 41, the initial mixed gas is shunted and enters the first reflux element 22, the second reflux element 23, and the third input element 21 of the mixing unit 20 at the head end respectively.

[0130] The technical effects of this embodiment are as follows:

[0131] By setting the first shunt unit, an obvious eddy current is formed in the input unit for the mixed gas, improving the uniformity of the mixed gas, and providing a driving force for the flow of the mixed gas in the subsequent mixing unit, further solving the problem of the reduction of the uniformity of the mixed gas.

[0132] Embodiment 3

[0133] This embodiment is a modified embodiment of Embodiment 1 to Embodiment 2.

[0134] As Figure 7 shown, the gas mixing device further includes a plurality of disturbance units 50. Among them, the plurality of disturbance units 50 are respectively arranged at the ends of the corresponding mixing units 20 for forming eddy currents.

[0135] As Figure 8 shown, the disturbance unit 50 includes a disturbance element 51. Among them, the disturbance element 51 is arranged at the end of the corresponding mixing unit 20 for forming an eddy current.

[0136] Specifically, the disturbance element 51 is arranged at the end of the third input element 21 and is located after the connection of the first reflux element 22, the second reflux element 23 and the third input element 21.

[0137] The cross section of the disturbance element 51 is circular.

[0138] The connection manner between the disturbance element 51 and the third input element 21 is a fixed connection or a detachable connection. Among them, the fixed connection manner includes but is not limited to integral molding and welding; the detachable connection manner includes but is not limited to snap connection and flange connection.

[0139] The size of the disturbing element 51 matches the size of the third input element 21. Generally, the radial dimension (such as the outer diameter) of the disturbing element 51 is smaller than the radial dimension (such as the inner diameter) of the third input element 21, and the height of the disturbing element 51 is not greater than the radial dimension (such as the height) of the third input element 21.

[0140] In some of these embodiments, the disturbing element 51 is a disturbing post.

[0141] The usage method of this embodiment is as follows:

[0142] When the mixed gas converges into the third input element 21 from the first reflux element 22 and the second reflux element 23 at the head end, at the end of the third input element 21, the disturbing element 51 disturbs the mixed gas to form a vortex, the mixed gas accelerates sharply, a small part of the mixed gas rushes through the gap between the third input element 21 and the disturbing element 51 to the third input element 21 of the next-stage mixing unit 20 rapidly, and the remaining part of the mixed gas remixes with the mixed gas input by the third input element 21 of this stage of the mixing unit 20 again, and then refluxes into the first reflux element 22 and the second reflux element 23 of this stage, and then remixes with the original mixed gas of the first reflux element 22 and the second reflux element 23 of this stage and flows to the first reflux element 22 and the second reflux element 23 of the next-stage mixing unit 20 or the third input element 21 of this stage.

[0143] The technical effects of this embodiment are as follows:

[0144] By setting the disturbing unit to disturb the mixed gas to form a vortex, the flow of the mixed gas is accelerated sharply, and the mixed gas is remixed again, which not only drives the flow of the mixed gas, but also further improves the mixing uniformity of the mixed gas, and further solves the problem of the reduction of the mixing uniformity of the mixed gas.

[0145] Embodiment 4

[0146] This embodiment is a variant embodiment of Embodiments 1 to 3.

[0147] As Figure 9 shown, the gas mixing device further includes at least one second shunt unit 60. Among them, the second shunt unit 60 is arranged in the input unit 10 for shunting.

[0148] Specifically, the second shunt unit 60 is arranged on the second input element 12.

[0149] In some of these embodiments, there are several second shunt units 60. The several second shunt units 60 are arranged at intervals along the axial direction of the second input element 12.

[0150] As Figure 10As shown, the second shunt unit 60 includes a second shunt element 61. Among them, the second shunt element 61 is disposed in the input unit 10 for shunting.

[0151] Specifically, the second shunt element 61 is disposed on the second input element 12.

[0152] The connection mode between the second shunt element 61 and the second input element 12 is a fixed connection or a detachable connection. Among them, the fixed connection mode includes but is not limited to integral molding and welding; the detachable connection mode includes but is not limited to snap connection.

[0153] The size of the second shunt element 61 matches the size of the second input element 12. Generally, the outer diameter of the second shunt element 61 is smaller than the inner diameter of the second input element 12, and the height of the third shunt element 71 is not greater than the outer diameter of the second input element 12.

[0154] In some of these embodiments, the second shunt element 61 is a second shunt column.

[0155] The usage method of this embodiment is as follows:

[0156] The mixed gas entering the second input element 12 passes through the second shunt element 61. In the second shunt element 61, the mixed gas forms a vortex and flows rapidly downstream.

[0157] The technical effects of this embodiment are as follows:

[0158] Using the second shunt unit to disturb the gas in the input unit to form a vortex, enabling the gas to be remixed and flowing rapidly downstream, not only improves the uniformity of the mixed gas, but also can drive the gas flow velocity.

[0159] Embodiment 5

[0160] This embodiment is a variant embodiment of Embodiments 1 to 4.

[0161] As Figure 11 shown, the gas mixing device further includes a plurality of third shunt units 70. Among them, the plurality of third shunt units 70 are respectively disposed in the corresponding plurality of mixing units 20 for shunting.

[0162] Furthermore, the plurality of shunt units 70 are respectively disposed at the rear ends of the corresponding disturbance units 50.

[0163] As Figure 12 shown, the third shunt unit 70 includes a third shunt element 71. Among them, the third shunt element 71 is disposed in the corresponding plurality of mixing units 20 for shunting.

[0164] Specifically, the third shunt element 71 is disposed at the end of the third input element 21.

[0165] Furthermore, the third flow splitting element 71 is disposed at the rear end of the corresponding disturbance element 51.

[0166] The third flow splitting element 71 is fixedly or detachably connected to the third input element 21. The fixed connection methods include, but are not limited to, integral molding and welding; the detachable connection methods include, but are not limited to, snap connection.

[0167] The size of the third flow splitting element 71 matches the size of the third input element 21. Generally, the outer diameter of the third flow splitting element 71 is not less than the inner diameter of the third input element 21, and the outer diameter of the third flow splitting element 71 is not greater than the outer diameter of the third input element 21.

[0168] In some of these embodiments, the third flow splitting element 71 includes a flow splitting plate and a plurality of through holes. The flow splitting plate is connected to the third input element 21; the plurality of through holes are arranged in an array on the flow splitting plate for the uniform passage of the mixed gas.

[0169] The usage method of this embodiment is as follows:

[0170] For each stage of the mixing unit 20, after the mixed gas is mixed by the third input element 21, the first reflux element 22, and the second reflux element 23, it is further evenly split by the third flow splitting element 71 to further improve the mixing uniformity.

[0171] Other steps are the same as those in Embodiment 1 and will not be elaborated here.

[0172] The technical effects of this embodiment are as follows:

[0173] By providing the third flow splitting unit, the mixed gas can be evenly input into the mixing unit, further improving the mixing uniformity of the gas.

[0174] Embodiment 6

[0175] This embodiment relates to the gas mixing system of the present invention.

[0176] A schematic embodiment of the present invention, a gas mixing system, includes a gas mixing device, a driving device, and a control device as described in any one of Embodiments 1 - 5. The driving device is connected to the gas mixing device for driving the flow of the mixed gas in the gas mixing device; the control device is respectively connected to the gas mixing device and the driving device for controlling the flow rate of the gas in the gas mixing device, the mixing ratio of the gas, and the working states of the gas mixing device and the driving device.

[0177] Specifically, the driving device is respectively connected to the input unit 10, the mixing unit 20, and the output unit 30 to drive the flow of the mixed gas; the control device is respectively connected to the input unit 10 and the driving device to control the flow rate of the gas in the gas mixing device, the mixing ratio of the gas, and the working states of the gas mixing device and the driving device.

[0178] More specifically, the driving device is respectively connected to a number of first input elements 11, second input elements 12, and third input elements 21 to drive the flow of the gas in the first input elements 11, second input elements 12, and third input elements 21; the control device is respectively connected to a number of valve elements 13 and the driving device to control the flow rate of the gas of the valve elements 13 and the working state of the driving device.

[0179] In some of these embodiments, the driving device is a pneumatic driving device, including but not limited to a variable-frequency fan.

[0180] In some of these embodiments, the control device includes but not limited to a PLC control system.

[0181] The usage method of this embodiment is as follows:

[0182] The control device controls the driving device to provide driving force, thereby driving a number of gas supply devices to respectively supply gas to the corresponding first input elements 11, and respectively controlling the corresponding valve elements 13 of the number of gas supply devices to control the flow rate of the gas and the mixing ratio of the gas; at the same time, controlling the driving device to drive the mixed gas to flow from the gas in the first input elements 11 into the second input elements 12, third input elements 21, first reflux element 22, and second reflux element 23 for gas mixing, and outputting the mixed gas by the output element 31.

[0183] The technical effects of this embodiment are as follows:

[0184] By setting the driving device, the flow of the mixed gas can be driven, providing a guarantee for gas mixing. By setting the control device, not only the automatic driving of the gas flow is realized, but also the mixing ratio of the gas can be flexibly adjusted as needed, ensuring the stable operation of the gas mixing device and the driving device, with precise control and labor saving.

[0185] The above are only the preferred embodiments of the present invention, and do not limit the implementation manners and protection scope of the present invention accordingly. For those skilled in the art, it should be able to realize that all the equivalent replacements and obvious changes made by using the specification and illustrated content of the present invention should be included in the protection scope of the present invention.

Claims

1. A gas mixing device, characterized in that, Comprising: An input unit, which is respectively connected to a plurality of gas supply devices and is used to obtain a plurality of gases transmitted by the plurality of gas supply devices; A plurality of mixing units, which are connected in sequence. The mixing unit at the head end is connected to the input unit. Each mixing unit is symmetrically arranged and is used to mix a plurality of gases to form a mixed gas; An output unit, which is connected to the mixing unit at the end and is used to output the mixed gas.

2. The gas mixing device according to claim 1, wherein, The input unit includes: A plurality of first input elements, which are respectively connected to corresponding gas supply devices and are used to respectively obtain a plurality of gases transmitted by the plurality of gas supply devices; A second input element, the head end of which is respectively connected to the plurality of first input elements, and the tail end of which is connected to the mixing unit at the head end and is used to convey a plurality of gases to the mixing unit.

3. The gas mixing device according to claim 2, wherein, The input unit further includes: A plurality of valve elements, which are respectively arranged on the corresponding first input elements and are used to control the flow rate of the gas conveyed by the first input elements.

4. The mixing device according to claim 1, characterized in that, The mixing unit includes: A third input element, the head end of which is connected to the tail end of the input unit or the tail end of another mixing unit, and the tail end of which is connected to the head end of the output unit or the head end of another mixing unit and is used to convey gas; A first reflux element, the head end of which is connected to the head end of the third input element, the tail end of which is connected to the tail end of the third input element, and the first reflux element is connected to the first reflux element of another mixing unit and is used to convey gas to the third input element so that the gas is mixed in the third input element; A second reflux element, the head end of which is connected to the head end of the third input element, the tail end of which is connected to the tail end of the third input element, and the second reflux element is connected to the second reflux element of another mixing unit and is used to convey gas to the third input element so that the gas is mixed in the third input element.

5. The gas mixing device according to claim 1, characterized in that, The output unit includes: An output element, the head end of which is connected to the tail end of the mixing unit at the end and is used to output the mixed gas.

6. The gas mixing device according to any one of claims 1 to 5, characterized in that, It further includes: A first shunt unit, which is arranged at the connection position between the input unit and the mixing unit and is used for shunting; And / or A plurality of disturbance units, which are respectively arranged at the tail ends of the corresponding mixing units and are used to form eddy currents; and / or At least one second shunt unit, which is arranged in the input unit and is used for shunting; and / or A plurality of third shunt units, which are respectively arranged in the corresponding plurality of mixing units and are used for shunting.

7. The gas mixing device according to claim 6, wherein, The first shunt unit includes: A first shunt element, which is arranged at the connection position between the input unit and the mixing unit and is used for shunting; and / or The second shunt unit includes: A second flow splitting element, which is arranged in the input unit and is used for flow splitting.

8. The gas mixing device according to claim 6, characterized in that, The disturbance unit includes: A disturbance element, which is arranged at the end of the corresponding mixing unit and is used for forming eddy currents.

9. The gas mixing device according to claim 6, characterized in that, The third flow splitting unit includes: A third flow splitting element, which is arranged in the corresponding mixing unit and is used for flow splitting.

10. A gas mixing system, characterized in that, Comprising: The gas mixing device according to any one of claims 1 to 9; A driving device, which is connected to the gas mixing device and is used for driving the flow of the mixed gas in the gas mixing device; A control device, which is respectively connected to the gas mixing device and the driving device and is used for controlling the flow rate of the gas in the gas mixing device, the mixing ratio of the gas, and the working states of the gas mixing device and the driving device.

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