A salt aerosol drying mixer

Abstract

The invention discloses a salt aerosol drying mixer, comprising a heating chamber, a wet mist chamber, a fixed seat, a mixing chamber, and a secondary filter chamber, wherein the heating chamber and the secondary filter chamber are respectively fixed on the fixed seat, the wet mist chamber and the mixing chamber are respectively connected to the heating chamber, the wet mist chamber is fixed inside the heating chamber, and the wet mist chamber and the heating chamber are respectively connected to the mixing chamber, the wet mist chamber has a wet mist diffusion cone mouth, the mixing chamber has a wet mist diffusion cone head, the wet mist diffusion cone mouth and the wet mist diffusion cone head cooperate to form a conical chamber, the hot air flow direction entering the mixing chamber from the heating chamber and the wet mist flow direction entering the mixing chamber from the wet mist chamber form a tangential flow, and the aerosol generated in the mixing chamber is filtered by the secondary filter chamber. It can be used in conjunction with various salt aerosol generators, the generated particulate aerosol is more fully dried, the concentration is more stable, two-stage screening can be achieved, the particle size distribution is more single, the overall structure is simple, and it is easy to clean and maintain.

Description

Technical Field

[0001] The invention belongs to the technical field of aerosol generators, and in particular relates to a saline aerosol drying mixer. Background Art

[0002] Aerosol is a colloidal dispersion system formed by small solid or liquid particles dispersed and suspended in a gas medium, also known as a gas dispersion system. Its dispersed phase is small solid or liquid particles with a size of 0.001 to 100 microns, and the dispersion medium is gas. Aerosol has great applications in medicine, environmental science, and military science. People prepare aerosols through corresponding preparation methods and devices according to different purposes of use.

[0003] At present, in the production and testing of filter materials such as masks and meltblown cloths, saline (NACL) aerosol particles are used to test the filtration efficiency of filter materials. The core components of the saline aerosol generator include a dry mixer. Most of the dry mixers currently used in domestic saline aerosol generators have problems such as insufficient drying, insufficient mixing, and excessive volume. In addition, the aerosol particles generated by the aerosol generator do not meet national standards, which ultimately leads to inaccurate test results. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In order to overcome the shortcomings of the prior art, a saline aerosol drying mixer is proposed, which solves the problems of insufficient drying, uneven mixing and aerosol particle size not meeting national standards in the drying mixer used in the existing saline aerosol generator.

[0006] (II) Technical solution

[0007] The present invention is achieved through the following technical scheme: The present invention proposes a salt aerosol drying mixer, comprising a heating chamber, a wet mist chamber, a fixed seat, a mixing chamber, and a secondary filter chamber, wherein the heating chamber and the secondary filter chamber are respectively fixed on the fixed seat, the wet mist chamber and the mixing chamber are respectively connected to the heating chamber, the wet mist chamber is fixed inside the heating chamber, and the wet mist chamber and the heating chamber are respectively connected to the mixing chamber, the hot air flow from the heating chamber into the mixing chamber and the wet mist flow from the wet mist chamber into the mixing chamber form a tangential flow, the aerosol generated in the mixing chamber is filtered by the secondary filter chamber, and an aerosol sampling outlet is provided on the fixed seat.

[0008] Preferably, the wet mist chamber has a wet mist diffusion cone opening, and the mixing chamber has a wet mist diffusion cone head, and the wet mist diffusion cone opening and the wet mist diffusion cone head cooperate to form a conical chamber.

[0009] Preferably, a wet mist chamber installation opening is provided in the middle of the heating chamber, and a hot air inlet is opened next to the wet mist chamber installation opening.

[0010] Preferably, a wet mist inlet is opened in the middle of the wet mist chamber, the wet mist diffusion cone is located below the wet mist inlet, and the wet mist chamber is also provided with a wet mist chamber sealing ring groove, and a wet mist chamber sealing ring is built in the wet mist chamber sealing ring groove.

[0011] Preferably, the fixing seat is provided with a heating chamber fixing hole at the top, a secondary filter chamber fixing hole at the bottom, and an exhaust gas outlet at the side; the fixing seat is also provided with a fixing seat sealing ring groove, and a fixing seat sealing ring is built into the fixing seat sealing ring groove.

[0012] Preferably, a slot is provided on the side wall of the mixing chamber, and the slot of the mixing chamber is partially located in the secondary filtration chamber.

[0013] Preferably, filter cotton is provided on the card slot.

[0014] Preferably, felt is provided at the bottom of the secondary filter chamber.

[0015] Preferably, the mixing chamber is provided with a drying port, and the drying port is communicated with the conical chamber.

[0016] Preferably, the aerosol sampling outlet is equipped with an aerosol sampling nozzle, and the exhaust gas outlet is equipped with an exhaust gas exhaust nozzle.

[0017] (III) Beneficial effects

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The heating chamber can preheat the wet mist, and the conical chamber makes the wet mist flow tangentially with the hot air flow. The combination of the two makes the wet mist drying more complete;

[0020] 2. Driven by the airflow, the particulate aerosol hits the felt, so that large-size aerosol particles are adsorbed on the felt, and small-size particles are taken away by the airflow, realizing the primary screening of particulate aerosol; after the primary screening, the particulate aerosol passes through the filter cotton driven by the airflow to achieve the secondary screening, making the particle aerosol particle size distribution more uniform. By replacing the filter cotton with different pore sizes, particulate aerosols of different particle sizes can be obtained. At the same time, the airflow is more stable and the aerosol concentration is more stable;

[0021] 3. It can be used with various salt aerosol generators. It has a simple overall structure, small size, easy disassembly and cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is an exploded structural diagram of the saline aerosol drying mixer of the present invention;

[0023] Figure 2is a cross-sectional view of the saline aerosol drying mixer of the present invention;

[0024] Figure 3 It is a schematic diagram of the structure of the heating chamber of the saline aerosol drying mixer of the present invention;

[0025] Figure 4 This is a cross-sectional view of the wet mist chamber of the saline aerosol dry mixer of the present invention;

[0026] Figure 5 is a cross-sectional view of a fixing seat of a saline aerosol drying mixer of the present invention;

[0027] Figure 6 is a cross-sectional view of the mixing chamber of the saline aerosol drying mixer of the present invention;

[0028] Figure 7 It is a top view of the mixing chamber of the saline aerosol drying mixer of the present invention.

[0029] The following are the descriptions of the reference numerals:

[0030] 1. Heating chamber; 2. Wet mist chamber; 3. Fixed seat; 4. Mixing chamber; 5. Secondary filter chamber; 6. Wet mist chamber sealing ring; 7. Aerosol sampling nozzle; 8. Exhaust gas discharge nozzle; 9. Fixed seat sealing ring; 10. Filter cotton; 100. Felt; 11. Wet mist chamber installation port; 12. Hot air inlet; 21. Wet mist diffusion cone port; 22. Wet mist inlet; 23. Wet mist chamber sealing ring groove; 31. Heating chamber fixing hole; 32. Secondary filter chamber fixing hole; 33. Aerosol sampling outlet; 34. Exhaust gas outlet; 35. Fixed seat sealing ring groove; 41. Wet mist diffusion cone head; 42. Drying port. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0032] like Figure 1-Figure 2As shown, a salt aerosol drying mixer in this embodiment includes a heating chamber 1, a wet mist chamber 2, a fixing seat 3, a mixing chamber 4, and a secondary filter chamber 5. The heating chamber 1 and the secondary filter chamber 5 are respectively fixed on the fixing seat 3, the wet mist chamber 2 and the mixing chamber 4 are respectively connected to the heating chamber 1, the wet mist chamber 2 is fixed inside the heating chamber 1, and the wet mist chamber 2 and the heating chamber 1 are respectively connected to the mixing chamber 4, the wet mist chamber 2 has a wet mist diffusion cone mouth 21, and the mixing chamber 4 has a wet mist diffusion cone head 41, the wet mist diffusion cone mouth 21 and the wet mist diffusion cone head 41 cooperate to form a conical cavity, the hot air flow direction entering the mixing chamber 4 from the heating chamber 1 and the wet mist flow direction entering the mixing chamber 4 from the wet mist chamber 2 form a tangential flow, and the aerosol generated in the mixing chamber 4 is filtered by the secondary filter chamber 5. Hot air is introduced into the heating chamber 1, and the flow direction is shown as Q2. Wet mist is introduced into the wet mist chamber 2, and the flow direction is shown as Q1. The wet mist will be heated and dried by the hot air. Since the wet mist chamber 2 and the heating chamber 1 are respectively connected to the mixing chamber 4, the dried wet mist forms a particulate aerosol in the mixing chamber 4. The aerosol flows as shown by Q3 and enters the secondary filter chamber 5 for filtration. The primary filtration will filter out aerosol particles with larger particle sizes. After the secondary filtration, the aerosol particle size is more uniform. The conical cavity allows the wet mist flow direction and the hot air flow direction to form a tangential flow, which is more conducive to uniform mixing. Of course, the conical cavity formed by the wet mist cavity 2 and the mixing cavity 4 of this embodiment can also be other shapes, for example: the bottom of the wet mist cavity 2 is flat, or round, the top of the mixing cavity 4 is also flat, or round, a cylindrical cavity can be formed between the wet mist cavity 2 and the mixing cavity 4, the wet mist airflow flows vertically to the hot air, and the wet mist flow direction and the hot air flow direction are also tangential flows, which are also protected by this patent. Any other cavity shape that can form a tangential flow between the hot air flow from the heating cavity 1 entering the mixing cavity 4 and the wet mist flow from the wet mist cavity 2 entering the mixing cavity 4 is also protected by the present invention.

[0033] As a preferred implementation of this embodiment, refer to Figure 3 A wet mist chamber installation opening 11 is provided in the middle of the heating chamber 1. The wet mist chamber 2 is connected to the heating chamber 1 by threads, which is convenient for disassembly. A hot air inlet 12 is provided next to the wet mist chamber installation opening 11. In this embodiment, there are two hot air inlets 12, which are arranged symmetrically.

[0034] As a preferred implementation of this embodiment, refer to Figure 4 A wet mist inlet 22 is provided in the middle of the wet mist chamber 2, and the wet mist diffusion cone 21 is located below the wet mist inlet 22. The wet mist chamber 2 is also provided with a wet mist chamber sealing ring groove 23, and a wet mist chamber sealing ring 6 is built in the wet mist chamber 2. The wet mist chamber sealing ring 6 is used to achieve sealing between the heating chamber 1 and the wet mist chamber 2, thereby ensuring the air tightness of the mixer.

[0035] As a preferred implementation of this embodiment, refer to Figure 5The fixing seat 3 has a heating chamber fixing hole 31 at the top, the heating chamber 1 is fixed in the heating chamber fixing hole 31, a secondary filter chamber fixing hole 32 at the bottom, the secondary filter chamber 5 is fixed in the secondary filter chamber fixing hole 32, an aerosol sampling outlet 33 and an exhaust gas outlet 34 at the side, the aerosol sampling outlet 33 is installed with an aerosol sampling nozzle 7, and the exhaust gas outlet 34 is installed with an exhaust gas exhaust nozzle 8. The required aerosol is discharged from the aerosol sampling nozzle 7. When the required aerosol flow rate is small, excess aerosol will be discharged from the exhaust gas exhaust nozzle 8 to avoid excessive pressure in the secondary filter chamber 5. The fixing seat 3 is also provided with a fixing seat sealing ring groove 35, with a built-in fixing seat sealing ring 9, from Figure 2 It can be seen that the fixing seat sealing ring 9 is arranged between the heating chamber 1 and the fixing seat 3, and also plays a sealing role.

[0036] As a preferred implementation of this embodiment, refer to Figure 6 The side wall of the mixing chamber 4 is provided with a slot 42, and the slot 42 of the mixing chamber is partially located in the secondary filter chamber 5. The slot 42 is provided with a filter cotton 10, and the bottom of the secondary filter chamber 5 is provided with a felt 100. The aerosol generated in the mixing chamber 4 enters the secondary filter chamber 5 under the impetus of the airflow, and first hits the felt 100, and the aerosol with a large particle size is adsorbed on the felt 100, and the aerosol with a small particle size is pushed by the airflow and then passes through the filter cotton 10. The filter cotton 10 with different pore sizes can be replaced to obtain aerosols with different particle sizes.

[0037] As a preferred implementation of this embodiment, refer to Figure 7 The mixing chamber 4 is provided with a drying port 42, and the drying port 42 is communicated with the conical chamber. The mixing chamber 4 is fixed to the heating chamber 1 by a threaded connection, which is convenient for disassembly.

[0038] The saline aerosol drying mixer of the present embodiment can be used in conjunction with various saline aerosol generators, has a simple overall structure, a compact size, and is easy to disassemble and clean.

[0039] The above-described embodiments are merely descriptions of preferred implementations of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by ordinary persons in the art to the technical solution of the present invention should fall within the protection scope of the present invention, and the technical contents for which protection is sought in the present invention have been fully recorded in the claims.

Claims

1. A saline aerosol drying mixer, characterized in that: It includes a heating chamber, a wet mist chamber, a fixing seat, a mixing chamber, and a secondary filter chamber. The heating chamber and the secondary filter chamber are respectively fixed on the fixing seat. The wet mist chamber and the mixing chamber are respectively connected to the heating chamber. The wet mist chamber is fixed inside the heating chamber, and the wet mist chamber and the heating chamber are respectively connected to the mixing chamber. The hot air flow from the heating chamber to the mixing chamber forms a tangential flow with the wet mist flow from the wet mist chamber to the mixing chamber. The aerosol generated in the mixing chamber is filtered by the secondary filter chamber. An aerosol sampling outlet is provided on the fixing seat.

2. The saline aerosol drying mixer according to claim 1, characterized in that: The wet mist chamber has a wet mist diffusion cone opening, and the mixing chamber has a wet mist diffusion cone head. The wet mist diffusion cone opening and the wet mist diffusion cone head cooperate to form a conical chamber.

3. The saline aerosol drying mixer according to claim 1, characterized in that: A wet mist chamber installation opening is arranged in the middle of the heating chamber, and a hot air inlet is arranged beside the wet mist chamber installation opening.

4. The saline aerosol dry mixer according to claim 2, characterized in that: A wet mist inlet is provided in the middle of the wet mist chamber, and the wet mist diffusion cone is located below the wet mist inlet; the wet mist chamber is also provided with a wet mist chamber sealing ring groove, and a wet mist chamber sealing ring is built in the wet mist chamber sealing ring groove.

5. The saline aerosol drying mixer according to claim 1, characterized in that: The fixing seat is provided with a heating chamber fixing hole at the top, a secondary filter chamber fixing hole at the bottom, and an exhaust gas outlet at the side; the fixing seat is also provided with a fixing seat sealing ring groove, and a fixing seat sealing ring is built in the fixing seat sealing ring groove.

6. The saline aerosol drying mixer according to claim 1 or 2, characterized in that: The side wall of the mixing chamber is provided with a slot, and the slot portion of the mixing chamber is located in the secondary filtering chamber.

7. The saline aerosol drying mixer according to claim 6, characterized in that: The card slot is provided with filter cotton.

8. The saline aerosol drying mixer according to claim 6, characterized in that: A felt is arranged at the bottom of the secondary filter chamber.

9. The saline aerosol drying mixer according to claim 2, characterized in that: The mixing chamber is provided with a drying port, and the drying port is communicated with the conical chamber.

10. The saline aerosol dry mixer according to claim 5, characterized in that: The aerosol sampling outlet is equipped with an aerosol sampling nozzle, and the exhaust gas outlet is equipped with an exhaust gas exhaust nozzle.

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