CN210496320U

CN210496320U - Miniature dust aerosol generator

Info

Publication number: CN210496320U
Application number: CN201920914306.6U
Authority: CN
Inventors: 高正
Original assignee: Wujiang Huayu Purifying Equipment Co ltd
Current assignee: Wujiang Huayu Purifying Equipment Co ltd
Priority date: 2019-06-18
Filing date: 2019-06-18
Publication date: 2020-05-12
Anticipated expiration: 2029-06-18

Abstract

The utility model discloses a miniature dust aerosol generator, it includes the casing, and the holding in air-vent valve, manometer and the injection subassembly of pipeline intercommunication in proper order in the casing. The miniature dust aerosol generator can avoid the problems of indefinite feeding amount, easy material breakage, material port blockage and the like caused by artificial filling, can replace quantitative feeding equipment, and simplifies the volume of the miniature dust aerosol generator.

Description

Miniature dust aerosol generator

Technical Field

The utility model relates to an aerosol generator field, specifically a miniature dust aerosol generator.

Background

Aerosol refers to a suspension of relatively stable liquid droplets or solid particles in a gaseous medium. Dust aerosol generators are specialized devices used to form relatively stable suspensions of solid particles from solid media.

The dust aerosol generator is widely applied, for example, the dust aerosol generator can be used as a dust source providing device for detecting the dust holding capacity of an air filter, and cleaning equipment is required to be used in the industries of pharmacy, electronics and the like, the air filter is required to be installed in the cleaning equipment during operation, and the dust holding capacity of the air filter is a key index of the service life of the air filter. The dust aerosol generator can also be used for various dust meters and auxiliary equipment for detecting dust sensors (such as PM2.5 sensors).

The micro dust aerosol generator is generally suitable for miniaturization experiment simulation and the like, the aerosol required to be generated instantly is less, so that the aerosol is generally and manually and directly supplied to the ejector continuously in a small amount, however, the feeding mode causes the problems of indefinite feeding quantity, easy material breakage, material port blockage and the like of the ejector, and therefore, special quantitative feeding equipment is required to be adopted to realize quantitative and continuous feeding. However, the addition of the quantitative feeding device inevitably increases the volume of the micro dust aerosol generator, and the advantages of micro light weight, portability and the like are lost.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the embodiment of the utility model provides a miniature dust aerosol generator, it is used for solving at least one in the above-mentioned problem.

The embodiment of the application discloses: the utility model provides a miniature dust aerosol generator, its includes the casing to and hold in the casing and pressure-regulating valve, manometer and the injection subassembly of pipeline intercommunication in proper order, wherein:

the injection assembly comprises an injection unit and a powder storage unit for providing powder for the injection unit, the injection unit comprises a first pipeline for receiving compressed air, a second pipeline communicated with the first pipeline through a throat pipe to form a Venturi tube effect structure, and a third pipeline communicated with the junction of the throat pipe and the second pipeline; the powder storage unit is higher than the third pipeline and comprises a containing groove which extends out of the shell and is used for storing powder, and the bottom of the powder storage unit is provided with a blanking hole communicated with the containing groove; the spraying assembly further comprises a connecting pipe, one end of the connecting pipe is detachably connected with the third pipeline, the other end of the connecting pipe is detachably connected and communicated with the powder storage unit, the connecting pipe is used for communicating the third pipeline with the blanking hole, and therefore when compressed air is introduced into the first pipeline, the Venturi tube effect structure can absorb powder leaked into the powder storage unit through the connecting pipe and mix the powder with the compressed air to form aerosol, and then the aerosol is sprayed out through the second pipeline; the inner diameter of the third pipeline is more than 2 times of the inner diameter of a blanking hole of the powder storage unit;

the shell is provided with a knob which is connected with a valve rod of the pressure regulating valve and used for operating the outlet pressure of the pressure regulating valve, and a dial plate used for displaying the pressure detection value of the pressure gauge.

Furthermore, the miniature dust aerosol generator also comprises a compressed air switch arranged on the shell, and the compressed air switch is used for starting or stopping an air compressor for providing compressed air for the first pipeline after the miniature dust aerosol generator is operated.

Furthermore, the miniature dust aerosol generator also comprises a compressed air joint which is arranged on the shell and is communicated with the pressure regulating valve.

Furthermore, the first pipeline, the second pipeline and the third pipeline are of an integrated structure.

Further, the inner diameter of the connecting pipe is equal to the inner diameter of the third pipeline.

Further, the inner diameter of the second pipeline is larger than that of the third pipeline.

Further, the inner diameter of the second pipeline is more than 1.5 times of the inner diameter of the third pipeline.

Furthermore, the containing groove for storing the powder is funnel-shaped.

Further, the first pipe has a corrugation on an outer wall of a portion for connecting with a pipe for transferring compressed air.

Further, the second conduit includes a quick-connect coupling that facilitates quick connection with a downstream hose.

The utility model has the advantages as follows:

1. this miniature dust aerosol generator has simple structure's the feed of the powder unit that stores up, and the powder unit that stores up can store up appropriate amount of powder, and at injection assembly during operation, the blanking hole through its bottom leaks the powder into injection unit for store up powder unit with hourglass mode ration, last to the injection unit provides the powder, avoid the pan feeding volume that artifical filler arouses indefinite, easily take place disconnected material, material mouthful jam scheduling problem, can replace quantitative feeding equipment again, simplify this miniature dust aerosol generator's volume.

2. Because store up whitewashed unit, connecting pipe and injection subassembly detachable and be connected, be convenient for to taking in the miniature dust aerosol generator who assembles this injection subassembly, simultaneously, can assemble the storage whitewashed unit of the different holding capacities as required when using this injection subassembly to adapt to different work occasions.

3. Because the inner diameter of the third pipeline is more than 2 times of the inner diameter of the blanking hole of the powder storage unit, when powder passes through the blanking hole and leaks into the third pipeline through the connecting pipe, the third pipeline with the larger inner diameter can pre-disperse the powder before the venturi pipeline mixes and sprays the powder with air, so that the powder is mixed with air in advance, the powder is prevented from falling into the venturi pipeline in a block shape, and the dust aerosol generation effect of the spraying assembly is enhanced.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic perspective view of a micro dust aerosol generator according to an embodiment of the present invention;

FIG. 2 is a schematic perspective view of a spray assembly according to an embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of a spray assembly according to an embodiment of the present invention;

reference numerals of the above figures:

100. a housing; 200. a spray assembly; 300. a knob; 400. a dial plate; 500. a compressed air switch;

10. an injection unit; 20. a powder storage unit;

1. a first pipeline; 2. a second pipeline; 3. a third pipeline; 4. a throat; 5. a containing groove; 6. a blanking hole; 7. and (4) connecting the pipes.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, 2 and 3, a micro dust aerosol generator includes a housing, and a pressure regulating valve, a pressure gauge and a spraying assembly 200 accommodated in the housing and sequentially connected by a pipeline, wherein the spraying assembly 200 includes a spraying unit 10 and a powder storage unit 20 for providing powder to the spraying unit 10; the injection unit 10 comprises a first pipeline 1 for receiving compressed air, a second pipeline 2 communicated with the first pipeline 1 through a throat pipe 4 to form a Venturi tube effect structure, and a third pipeline 3 communicated with the junction of the throat pipe 4 and the second pipeline 2; the powder storage unit 20 is higher than the third pipeline 3 and comprises a containing groove 5 which extends out of the shell 100 and is used for storing powder, and the bottom of the powder storage unit 20 is provided with a blanking hole 6 communicated with the containing groove 5; the spraying assembly further comprises a connecting pipe 7, one end of the connecting pipe 7 is detachably connected with the third pipeline 3, the other end of the connecting pipe 7 is detachably connected and communicated with the powder storage unit 20, the connecting pipe 7 is used for communicating the third pipeline 3 with the blanking hole 6, so that when the first pipeline 1 is connected with compressed air, the Venturi tube effect structure can absorb powder leaked in by the powder storage unit 20 through the connecting pipe 7 and mix the powder with the compressed air to form aerosol, and then the aerosol is sprayed out through the second pipeline 2; wherein the inner diameter of the third pipeline 3 is more than 2 times of the inner diameter of the blanking hole 6 of the powder storage unit 20; the case 100 is provided with a knob 300 connected to a stem of the pressure regulating valve and used to operate the outlet pressure of the pressure regulating valve, and a dial 400 used to display a pressure detection value of the pressure gauge.

By means of the structure, the micro dust aerosol generator can supply materials through the powder storage unit 20 with a simple structure, the powder storage unit 20 can store a proper amount of powder, when the spraying assembly works, the powder leaks into the spraying unit 10 through the blanking hole 6 at the bottom of the spraying assembly, so that the powder storage unit 20 can quantitatively and continuously provide the powder to the spraying unit 10 in a hourglass mode, the problems that the feeding amount is uncertain, the material breakage and the material opening blockage easily occur and the like caused by artificial filling are avoided, quantitative feeding equipment can be replaced, and the volume of the micro dust aerosol generator is simplified.

Moreover, because store up whitewashed unit 20, connecting pipe 7 and injection subassembly detachable and be connected, be convenient for to the miniature dust aerosol generator who takes in this injection subassembly of assembly, simultaneously, can assemble the storage whitewashed unit 20 of the different holding capacity as required when using this injection subassembly to adapt to different work occasions. Preferably, the powder storage tank 5 may have a funnel shape.

In addition, because the inner diameter of the third pipeline 3 is more than 2 times of the inner diameter of the blanking hole 6 of the powder storage unit 20, when powder leaks into the third pipeline 3 through the blanking hole 6 and the connecting pipe 7, the third pipeline 3 with the larger inner diameter can pre-disperse the powder before the venturi pipeline mixes and sprays the powder and air, so that the powder is mixed with the air in advance, the powder is prevented from falling into the venturi pipeline in a block shape, and the dust aerosol generation effect of the spraying assembly is enhanced. Preferably, the inner diameter of the connecting pipe 7 is equal to the inner diameter of the third pipeline 3, so that the dust to be treated has a good pre-dispersing effect.

Specifically, the first pipeline 1, the second pipeline 2 and the third pipeline 3 are of an integrated structure, so that the injection assembly is formed into a three-way structure, that is, the first pipeline 1, the second pipeline 2 and the third pipeline 3 can all be regarded as a part of the three-way structure. The throat pipe 4 is a section of pipe between the first pipe 1 and the second pipe 2, the pipe diameter of which is smaller than that of the first pipe 1 and the second pipe 2, and a common venturi pipe can be referred to specifically. The junction between the throat 4 and the first and

second pipelines

1 and 2 may be provided with a smooth tapered section. In addition, the micro dust aerosol generator further comprises a compressed air switch 500 disposed on the housing 100, wherein the compressed air switch 500 is used for starting or stopping an air compressor for providing compressed air to the first pipeline 1 after being operated, and a compressed air connector disposed on the housing 100 and used for communicating with the pressure regulating valve.

In a preferred embodiment, the inner diameter of the second pipe 2 is larger than the inner diameter of the third pipe 3, so that the spraying assembly has better dust aerosol generating effect. Specifically, the inner diameter of the second pipe 2 may be 1.5 times or more the inner diameter of the third pipe 3.

The first pipe 1 has corrugations in the outer wall of the portion for connection to the pipe for conveying compressed air. The corrugation may be a groove or a protruding texture or the like formed on the outer wall of the portion of the first pipeline 1 for connecting with a pipeline for transmitting compressed air.

In order to facilitate the quick connection of the second pipe 2, including the hose downstream, the end of the second pipe 2 may be provided with a quick coupling, which protrudes from the housing 100.

The utility model discloses the principle and the implementation mode of the utility model are explained by applying the concrete embodiment, and the explanation of the above embodiment is only used for helping to understand the technical scheme and the core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.

Claims

1. The utility model provides a miniature dust aerosol generator which characterized in that, includes the casing to and holding in the casing and pressure-regulating valve, manometer and the injection subassembly of pipeline intercommunication in proper order, wherein:

the injection assembly comprises an injection unit and a powder storage unit for providing powder for the injection unit, the injection unit comprises a first pipeline for receiving compressed air, a second pipeline communicated with the first pipeline through a throat pipe to form a Venturi tube effect structure, and a third pipeline communicated with the junction of the throat pipe and the second pipeline; the powder storage unit is higher than the third pipeline and comprises a containing groove which extends out of the shell and is used for storing powder, and the bottom of the powder storage unit is provided with a blanking hole communicated with the containing groove; the spraying assembly further comprises a connecting pipe, one end of the connecting pipe is detachably connected with the third pipeline, the other end of the connecting pipe is detachably connected and communicated with the powder storage unit, the connecting pipe is used for communicating the third pipeline with the blanking hole, and therefore when compressed air is connected into the first pipeline, the Venturi tube effect structure can absorb powder leaked into the powder storage unit through the connecting pipe and mix the powder with the compressed air to form aerosol, and then the aerosol is sprayed out through the second pipeline; the inner diameter of the third pipeline is more than 2 times of the inner diameter of a blanking hole of the powder storage unit;

2. The miniature dust aerosol generator of claim 1, further comprising a compressed air switch disposed on the housing, the compressed air switch being operable to start or stop an air compressor device providing compressed air to the first conduit.

3. The miniature dust aerosol generator of claim 1, further comprising a compressed air connection disposed on said housing and adapted to communicate with said pressure regulating valve.

4. The miniature dust aerosol generator of claim 1, wherein the first, second, and third conduits are of unitary construction.

5. The miniature dust aerosol generator of claim 1, wherein the connecting tube has an inner diameter equal to the inner diameter of the third conduit.

6. The miniature dust aerosol generator of claim 5, wherein the second tube has an inner diameter greater than the inner diameter of the third tube.

7. The miniature dust aerosol generator of claim 6, wherein the inner diameter of the second conduit is greater than 1.5 times the inner diameter of the third conduit.

8. The micro dust aerosol generator of claim 1, wherein the reservoir for storing the pulverized material is funnel-shaped.

9. The micro dust aerosol generator as set forth in claim 1, wherein the first pipe has a corrugation on an outer wall of a portion for connecting with the pipe for transferring the compressed air.

10. The miniature dust aerosol generator of claim 1, wherein said second conduit comprises a quick-connect fitting for facilitating quick connection with a downstream hose.