A gas mixing device

Abstract

The utility model provides a kind of gas mixing device, it is related to gas mixing technical field, including the air inlet piece and mixing piece of interconnection, main air inlet passage is arranged in air inlet piece along air inlet direction, mixing passage is arranged in mixing piece, main air inlet passage communicates mixing passage, mixing passage is provided with mixing assembly;Several air inlet pipes are arranged on the lateral wall of air inlet piece, vice air inlet passage that communicates main air inlet passage is arranged in air inlet pipe, baffle is arranged at the air inlet of vice air inlet passage, interjacent communication port is provided, compact block is rested on communication port by compact piece, to seal vice air inlet passage;Connecting piece is set on air inlet pipe, connecting passage that communicates vice air inlet passage is arranged in connecting piece, top block is arranged in connecting passage, top block drives compact block to separate from communication port by passing through communication port, realize the intercommunication of connecting passage and vice air inlet passage, guarantee the synchronous opening and closing and reliable sealing of gas circuit in the process of connection and disconnection, avoid gas leakage.

Description

Technical Field

[0001] This utility model relates to the field of gas mixing technology, and more specifically, to a gas mixing device. Background Technology

[0002] A gas mixing device is a key piece of equipment used to thoroughly and uniformly mix two or more different gases in a specific ratio. It is widely used in many fields such as chemical production, environmental monitoring, medical respiration, and scientific experiments. Its core principle is usually to introduce and mix gases through a main gas passage connected to one or more secondary passages, ultimately forming a standard gas or mixed gas that meets the requirements.

[0003] Most mainstream gas mixing devices currently use a fixed pipeline architecture of "one main and multiple auxiliary", that is, depending on the type of gas, a main pipeline is set up to connect one or more fixed auxiliary gas interfaces. In application scenarios that require frequent switching or temporary addition or removal of gas lines, the operation process is cumbersome, and it is difficult to ensure the synchronous opening and closing and reliable sealing of gas lines during connection and disconnection, which poses a risk of gas leakage and limits its application in efficient, safe and flexible gas mixing preparation. Utility Model Content

[0004] The purpose of this invention is to provide a gas mixing device with high safety, addressing the problems in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: This utility model provides a gas mixing device, including an air inlet and a mixing component connected to each other. The air inlet has a main air inlet channel arranged along the air inlet direction, and the mixing component has a mixing channel arranged along the air inlet direction. The main air inlet channel is connected to the mixing channel, and a mixing component is arranged in the mixing channel. The side wall of the air intake component is provided with a plurality of air intake pipes, and the air intake pipes are provided with a secondary air intake channel that connects to the main air intake channel. A baffle is provided at the air inlet of the secondary air intake channel, and a connecting port is provided in the middle of the baffle. A pressing block is pressed against the connecting port by a pressing component to seal the secondary air intake channel. A connector is fitted onto the intake pipe, and a connecting channel is provided inside the connector to connect to the secondary intake channel. A top block is provided inside the connecting channel. The top block passes through the connecting port and drives the clamping block to separate from the connecting port, thereby realizing the connection between the connecting channel and the secondary intake channel.

[0006] Optionally, the mixing assembly includes several sets of circular plates and annular plates arranged alternately along the air intake direction; wherein, each set of circular plates is disposed close to the side of the air intake component, the axial directions of the circular plates and the annular plates are respectively coincident with the axis of the air intake direction, the circular plates are connected to the mixing channel through multiple connecting strips, the annular plates are mounted on the mixing channel and have through holes along the air intake direction.

[0007] Optionally, both the circular plate and the through hole are disposed in the axial direction of the mixing channel, and the radial cross-sectional area of ​​the circular plate is larger than the radial cross-sectional area of ​​the through hole, thereby forming a nonlinear flow channel in the mixing channel.

[0008] Optionally, the through holes between the first plate and the annular plate are both located at the middle position of the mixing channel, and the area of ​​the first plate is larger than the area of ​​the through holes.

[0009] Optionally, the mixing assembly further includes several guide vanes, which are disposed on the side away from the air intake, and the guide vanes are provided with multiple guide channels.

[0010] Optionally, the exhaust direction of the guide channel is inclined along the intake direction of the mixing component.

[0011] Optionally, the two ends of the main intake channel are a main intake port and a mixing outlet, respectively. The end of the connecting channel away from the main intake channel is a secondary intake port. The two ends of the mixing channel are a mixing intake port and a main outlet, respectively. The first outlet and the mixing intake port are connected by a flange structure to connect the intake component and the mixing component.

[0012] Optionally, the clamping component includes a mounting plate slidably mounted on the inner wall of the secondary air intake channel. The mounting plate is provided with a plurality of vent holes. The mounting plate is provided with a clamping spring extending toward the connecting port. The end of the clamping spring is provided with a clamping block. The clamping block abuts against the connecting port to disconnect the secondary air intake channel from the main air intake channel.

[0013] Optionally, the connector is provided with two axially distributed connecting grooves at one end for connecting the intake pipe. The connecting grooves are connected to the end face of the connector. The connecting grooves are configured with a "]" shape, and one end of the groove passes through the end of the connector. The outer wall of the intake pipe is provided with two connecting blocks corresponding to the connecting grooves. The connecting blocks move along the open end of the connecting groove to its closed end to realize the axial limiting installation of the intake pipe and the connector.

[0014] Optionally, a protrusion is provided on the inner wall of the connecting channel, and a sealing ring is provided on the outer wall of the air intake pipe; When the connecting piece is fitted onto the air intake pipe, the protrusion abuts against the sealing ring.

[0015] The beneficial effects that this utility model can produce include: 1) When the connector is not fitted onto the intake pipe, the clamping block is tightly pressed against the connecting port of the stop block through the clamping component, directly sealing the secondary intake channel. When the connector is fitted onto the intake pipe, the top block inside the connecting channel will precisely push open the clamping block, so that the connecting channel is connected to the secondary intake channel, effectively preventing the risk of gas leakage and improving operational safety.

[0016] 2) Standardized interfaces reduce the difficulty and cost of later maintenance, simplify the addition or removal of gas lines, eliminate complicated pipeline modifications and other tedious procedures, significantly reduce the time and manpower costs required to switch gas formulas, and improve work efficiency.

[0017] 3) The types and quantities of gases involved in the mixing can be flexibly increased or decreased by installing or removing the "connecting parts" according to the current experimental or production needs. One set of equipment can adapt to a variety of different process formulas, which greatly reduces equipment costs and improves equipment utilization and applicability. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a gas mixing device provided in an embodiment of this application; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 This is one of the structural schematic diagrams of the connector; Figure 4 This is the second structural schematic diagram of the connector; Figure 5 This is the third structural schematic diagram of the connector.

[0020] Icons: 10. Intake component; 11. Main intake port; 12. Intake pipe; 121. Secondary intake channel; 122. Connecting block; 123. Mounting plate; 124. Compression spring; 125. Compression block; 126. Connecting port; 127. Sealing ring; 13. Main intake channel; 14. Connecting component; 141. Connecting channel; 142. Secondary intake port; 143. Opening; 144. Connecting groove; 145. Protrusion; 146. Fixing plate; 147. Top block; 20. Mixing component; 21. Mixing channel; 22. Air outlet; 23. Guide plate; 231. Guide channel; 24. Circular plate; 241. Connecting strip; 25. Circular ring plate; 251. Through hole. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of this application. It should be noted that, without conflict, the various features in the embodiments of this application can be combined with each other, and the combined embodiments are still within the protection scope of this application.

[0022] like Figure 1 As shown, the gas mixing device provided in this application embodiment includes an air inlet 10 and a mixing component 20 connected to each other. The air inlet 10 has a main air inlet channel 13 arranged along the air inlet direction. Figure 1 The direction indicated by the middle arrow is the air intake direction. A mixing channel 21 is provided within the mixing component 20 along the air intake direction, where the gas mixes. The main air intake channel 13 connects to the mixing channel 21, and a mixing assembly is provided within the mixing channel 21. Several air intake pipes 12 are provided on the side wall of the air intake component 10. A secondary air intake channel 121, connecting to the main air intake channel 13, is provided within each air intake pipe 12. A baffle is provided at the air intake port of the secondary air intake channel 121, with a connecting port 126 in the middle of the baffle. A clamping block 125 abuts against the connecting port 126 via the clamping component to seal the secondary air intake channel 121. A connector 14 is fitted onto the air intake pipe 12, and a connecting channel 141, connecting to the secondary air intake channel 121, is provided within the connecting channel 141. A top block 147 is provided within the connecting channel 141, and the top block 147 is connected to the connecting channel 141 via a fixing plate 146. Figure 5As shown, the fixing plate 146 is configured with a cross structure to facilitate gas passage. The top block 147 passes through the connecting port 126 and drives the clamping block 125 to separate the clamping block 125 from the connecting port 126, thereby connecting the connecting channel 141 and the secondary air intake channel 121. This achieves "automatic sealing" and "plug-and-play" for the secondary air passage. When an external gas source pipeline is connected to the air intake pipe 12 via the connector 14, the top block 147 is pushed and opens the clamping block 125, automatically connecting the air passage. When the connector 14 is removed, the clamping block 125 resets and reseals the connecting port 126 under the action of the clamping component. This greatly simplifies operation, avoids cumbersome manual valve operation when switching air passages, and fundamentally eliminates the risk of gas leakage caused by asynchronous operation during connection / disconnection, significantly improving safety and convenience. In this embodiment, multiple air intake pipes 12 can be provided, which automatically seal and reset when not in use, and can be used by simply plugging in the connector 14.

[0023] Specifically, the mixing assembly includes several sets of circular plates 24 and annular plates 25 arranged alternately along the air intake direction. Each set of circular plates 24 is positioned close to the air intake component 10, and the axial directions of the circular plates 24 and annular plates 25 coincide with the axis of the air intake direction. The circular plates 24 are connected to the mixing channel 21 via multiple connecting strips 241. The annular plates 25 are mounted on the mixing channel 21 and have through holes 251 along the air intake direction, with their outer edges connected to the mixing channel 21. When the main gas and the introduced secondary gas flow through the mixing channel 21, they undergo multiple processes of splitting, merging, and changing direction via the circular plates 24 and annular plates 25. The gas streams are continuously dispersed, recombine, and their flow directions are changed, enhancing the turbulence and diffusion effects between gas molecules, thereby achieving rapid, thorough, and uniform mixing without the need for power components.

[0024] Specifically, the circular plate 24 and the through hole 251 are both positioned along the axial direction of the mixing channel 21. The radial cross-sectional area of ​​the circular plate 24 is larger than that of the through hole 251, thus forming a nonlinear flow channel within the mixing channel 21. This ensures that the gas impacts the plate surface as it flows through each plate, generating stronger eddies and shear forces, further enhancing the turbulent mixing effect and improving the mixing efficiency.

[0025] In this embodiment, the mixing component further includes several guide vanes 23, which are disposed away from the inlet 10. Multiple guide channels 231 are provided on the guide vanes 23. The guide vanes 23 can rectify and homogenize the mixed gas, dividing large streams of gas that may still have concentration gradients into multiple smaller streams. This allows the gas to undergo a final, thorough fusion before exiting the outlet, ensuring a higher standard of uniformity in the output gas and reducing pulsation and concentration fluctuations in the outlet gas flow. The exhaust direction of the guide channels 231 is inclined along the inlet direction of the mixing component 20. This helps to form a swirling flow in the outlet region of the mixing channels 21, allowing the various gas streams to further cross and mix, ultimately resulting in a more uniform and stable output mixed gas.

[0026] Specifically, the main intake channel 13 has a main intake port 11 and a mixing outlet at its two ends, respectively. The end of the connecting channel 141 furthest from the main intake channel 13 is a secondary intake port 142. The mixing channel 21 has a mixing inlet and a main outlet 22 at its two ends, respectively. The main intake port 11, the secondary intake port 142, and the main outlet 22 are configured as a standard gas pipeline connection structure, facilitating connection in the pipeline. The mixing outlet and the mixing inlet are connected by a flange structure to connect the intake component 10 and the mixing component 20. The connection structure is robust, has good sealing performance, and is easy to disassemble and maintain. Users can easily separate the mixing component 20 from the intake component 10 for cleaning, replacement, or upgrading, improving the maintainability and service life of the equipment.

[0027] like Figure 2 As shown, the clamping component includes a mounting plate 123 that is slidably mounted on the inner wall of the secondary air intake channel 121. The mounting plate 123 is provided with a plurality of ventilation holes. A clamping spring 124 extending toward the connecting port 126 is provided on the mounting plate 123. A clamping block 125 is provided at the end of the clamping spring 124. The clamping block 125 abuts against the connecting port 126 to disconnect the secondary air intake channel 121 from the main air intake channel 13.

[0028] like Figure 3As shown, the connector 14, used to connect to the intake pipe 12, has two axially distributed connecting grooves 144 at one end. The connecting grooves 144 connect to the end face of the connector 14, forming an opening 143. The bottom wall of the connecting groove 144 bends back towards the end face of the connector 14. The connecting groove 144 is configured with a "]" shape, with one end penetrating the end of the connector 14. The outer wall of the intake pipe 12 has two connecting blocks 122 corresponding to the connecting grooves 144. The connecting blocks 122 move along the open end of the connecting groove 144 to its closed end, achieving axial positioning and installation of the intake pipe 12 and the connector 14. By simply inserting the connecting block 122 into the connecting groove 144 through the corresponding opening 143 and rotating it, the connecting block 122 can be engaged at the bottom of the bend in the connecting groove 144, achieving a quick and secure connection between the connector 14 and the intake pipe 12. Reverse rotation allows for easy removal. This simplifies the connection and disassembly steps of the external air source, improves operational efficiency, and is suitable for occasions requiring frequent switching of air sources. Since the top block 147 drives the clamping block 125 through the compression spring 124 passing through the connecting port (126), the connector 14 has a tendency to come outward, and the connector block 122 can be snapped into the bottom of the bend of the connecting groove 144 to achieve a tight connection.

[0029] like Figure 4 and Figure 2 As shown, a protrusion 145 is provided on the inner wall of the connecting channel 141, and a sealing ring 127 is provided on the outer wall of the air intake pipe 12. When the connector 14 is fitted onto the air intake pipe 12, the protrusion 145 abuts against the sealing ring 127. Through the tight fit between the protrusion 145 and the sealing ring 127, a radial seal is formed when the connector 14 is fitted onto the air intake pipe 12, effectively preventing gas leakage from the interface gap between the connector 14 and the air intake pipe 12, further enhancing the airtightness and safety of the entire system in operation. The sealing ring 127 extends along the axis of the air intake pipe 12. When the top block 147 presses against the clamping block 125, the sealing ring 127 is already in contact with the protrusion 145, achieving a sealing effect and preventing gas leakage.

[0030] The working process of the gas mixing device provided in this application embodiment is as follows: An external gas source pipeline is connected to the auxiliary air inlet 142 of the connector 14, and the other end of the connector 14 is connected to the air inlet pipe 12. The top block 147 inside the connector 14 pushes and opens the clamping block 125, so that the auxiliary air inlet channel 121 is automatically opened. The gas enters the main air inlet channel 13 through the connecting channel 141 and the auxiliary air inlet channel 121. The main gas enters the main air inlet channel 13 from the main air inlet 11 and flows together with the auxiliary gas to the mixing channel 21. When flowing through the mixing component, the gas is divided, merged and changed direction multiple times by the circular plate 24 and the annular plate 25, which enhances the turbulence and diffusion effect and achieves full mixing. The mixed gas is then rectified and homogenized by the guide plate 23 and finally output from the main air outlet 22. When the connector 14 is pulled out, the clamping component pushes the clamping block 125 to reset the sealing connection port 126 and automatically closes the auxiliary air inlet channel 121 to prevent gas leakage.

[0031] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A gas mixing device, comprising an inlet (10) and a mixing component (20) connected to each other, characterized in that: The air intake component (10) is provided with a main air intake channel (13) along the air intake direction, and the mixing component (20) is provided with a mixing channel (21) along the air intake direction. The main air intake channel (13) is connected to the mixing channel (21), and a mixing component is provided in the mixing channel (21). The air intake component (10) has a plurality of air intake pipes (12) on its side wall. The air intake pipes (12) have a secondary air intake channel (121) that connects to the main air intake channel (13). The air intake port of the secondary air intake channel (121) has a baffle block. The baffle block has a connecting port (126) in the middle. The clamping block (125) presses against the connecting port (126) through the clamping component to seal the secondary air intake channel (121). A connector (14) is fitted onto the intake pipe (12). A connecting channel (141) connecting the auxiliary intake channel (121) is provided inside the connector (14). A top block (147) is provided inside the connecting channel (141). The top block (147) passes through the connecting port (126) and drives the clamping block (125) to separate from the connecting port (126), thereby realizing the connection between the connecting channel (141) and the auxiliary intake channel (121).

2. The gas mixing device according to claim 1, characterized in that, The mixing assembly includes several sets of circular plates (24) and annular plates (25) arranged alternately along the air intake direction; wherein, each set of circular plates (24) is arranged close to the side of the air intake component (10), the axial directions of the circular plates (24) and the annular plates (25) are respectively coincident with the axis of the air intake direction, the circular plates (24) are connected to the mixing channel (21) through multiple connecting strips (241), the annular plates (25) are installed on the mixing channel (21) and have through holes (251) along the air intake direction.

3. The gas mixing device according to claim 2, characterized in that, The circular plate (24) and the through hole (251) are both located in the axial direction of the mixing channel (21). The radial cross-sectional area of ​​the circular plate (24) is larger than the radial cross-sectional area of ​​the through hole (251), thereby forming a nonlinear flow channel in the mixing channel (21).

4. The gas mixing device according to claim 1, characterized in that, The mixing assembly also includes several guide vanes (23), which are disposed on the side away from the air intake (10), and the guide vanes (23) are provided with multiple guide channels (231).

5. The gas mixing device according to claim 4, characterized in that, The exhaust direction of the guide channel (231) is inclined along the intake direction of the mixing component (20).

6. The gas mixing device according to claim 1, characterized in that, The two ends of the main air intake channel (13) are the main air intake port (11) and the mixing air outlet, respectively. The end of the connecting channel (141) away from the main air intake channel (13) is the auxiliary air intake port (142). The two ends of the mixing channel (21) are the mixing air intake port and the main air outlet (22), respectively. The mixing air outlet and the mixing air intake port are connected by a flange structure to connect the air intake component (10) and the mixing component (20).

7. The gas mixing device according to claim 1, characterized in that, The clamping component includes a mounting plate (123) that is slidably mounted on the inner wall of the secondary air intake channel (121). The mounting plate (123) is provided with a plurality of ventilation holes. The mounting plate (123) is provided with a clamping spring (124) extending toward the connecting port (126). The end of the clamping spring (124) is provided with a clamping block (125). The clamping block (125) abuts against the connecting port (126) to disconnect the secondary air intake channel (121) from the main air intake channel (13).

8. The gas mixing device according to claim 1, characterized in that, The connector (14) is used to connect the intake pipe (12) and has two axially symmetrically distributed connecting grooves (144). The connecting grooves (144) are connected to the end face of the connector (14). The connecting grooves (144) are configured as "]" shaped structures, and one end of them penetrates the end of the connector (14). The outer wall of the intake pipe (12) is provided with two connecting blocks (122) corresponding to the connecting grooves (144). The connecting blocks (122) move along the open end of the connecting grooves (144) to their closed end to realize the axial limiting installation of the intake pipe (12) and the connector (14).

9. The gas mixing device according to claim 1, characterized in that, A protrusion (145) is provided on the inner wall of the connecting channel (141), and a sealing ring (127) is provided on the outer wall of the air intake pipe (12). When the connector (14) is fitted onto the air intake pipe (12), the protrusion (145) abuts against the sealing ring (127).

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