CN210496323U

CN210496323U - Powder feeding mechanism and dust aerosol generator

Info

Publication number: CN210496323U
Application number: CN201920914309.XU
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 powder feeding mechanism and a dust aerosol generator, which comprises a storage unit and a stirring unit, wherein the storage unit comprises a shell, an accommodating cavity for accommodating the powder is formed in the shell, the top of the shell is provided with a feeding opening part, and the bottom of the shell is provided with a discharging opening part; the stirring unit comprises a stirring part and a material stirring part, the stirring part comprises a first shaft body and a stirring body, and the material stirring part comprises a second shaft body and a material stirring body. The utility model provides a powder feeding mechanism, its stirring physical stamina stirs the powder that holds the intracavity portion and store up makes the powder that holds the intracavity and store up can be when receiving the stirring with the air mixing, keeps the fluffy state of powder, no matter be in the powder that holds the intracavity still certainly ejection of compact oral area spills and is all loose, fluffy by the powder that is transmitted to injection assembly, can not take place the caking, and then guarantees the emergence effect of rear end powder aerosol.

Description

Powder feeding mechanism and dust aerosol generator

Technical Field

The utility model relates to an aerosol generator field, specific is a powder feeding mechanism and 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 gas source providing device for detecting the dust holding capacity of a small 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 the calibration of the particle size of a dust particle counter more than or equal to 1 micron and a dust meter.

When the medium and high-concentration dust aerosol occurs, the instantaneously required powder amount is relatively large, so that the powder storage amount of a feeding mechanism of the corresponding dust aerosol generator is relatively large, the powder in a storage unit of the generator can be accumulated, the powder is extruded together to be blocky, the feeding is unsmooth, and the dust generation effect of a rear-end injection assembly is also influenced by the blocky powder.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defect in the prior art, the embodiment of the utility model provides a powder feeding mechanism and dust aerosol generator, its technical problem that is used for solving the powder in the current dust aerosol generator storage unit and piles up the blocking influence feed.

The embodiment of the application discloses: the utility model provides a powder feeding mechanism, its includes the storage unit and is used for right the stirring unit that the powder in the storage unit stirs, wherein:

the storage unit comprises a shell, a containing cavity for containing the powder is formed in the shell, a feeding opening communicated with the containing cavity is formed in the top of the shell so as to facilitate the powder filling into the containing cavity, and a discharging opening communicated with the containing cavity is formed in the bottom of the shell;

the stirring unit comprises a stirring part, the stirring part comprises a first shaft body and a stirring body fixedly connected with the first shaft body, and the stirring body extends in the cavity so that when the stirring part rotates by taking the axis of the first shaft body as a rotating shaft, the stirring body can stir and disperse powder accumulated in the cavity; the stirring unit further comprises a material stirring part arranged below the stirring part, the material stirring part comprises a second shaft body and a plurality of material stirring bodies arranged around the second shaft body, and when the material stirring part rotates by taking the axis of the second shaft body as a rotating shaft, the material stirring bodies can stir the powder at the bottom of the containing cavity, so that the powder stirred by the stirring bodies is stirred to the discharging opening part and is discharged from the discharging opening part to the storage unit.

Further, the first shaft body and the second shaft body are coaxial, and the first shaft body and the second shaft body are of an integrated structure.

Furthermore, the stirring unit further comprises a first supporting portion, the first supporting portion is arranged at the top end of the first shaft body and comprises a plurality of supporting bodies arranged around the first shaft body, one ends, far away from the first shaft body, of the supporting bodies are located on a circle center on a rotating shaft of the first shaft body, the storage unit comprises an annular second supporting portion, the second supporting portion surrounds the first supporting portion and is in clearance fit with one ends, far away from the first shaft body, of the supporting bodies, so that when the first shaft body drives the stirring bodies to stir powder stored in the accommodating cavity, all the supporting bodies can rotate in a space surrounded by the second supporting portion along with the first shaft body, and therefore the top end of the first shaft body is in a stable position.

Furthermore, the stirring body comprises a first stirring part, the first stirring part comprises at least one first connecting section connected with the first shaft body, and first rotation sections connected with one ends, far away from the first shaft body, of the first connecting sections respectively, and rotation surfaces formed when the first rotation sections are driven by the first shaft body to rotate are close to the inner wall of the accommodating cavity, wherein the rotation surfaces are formed by the first rotation sections and the shell.

Furthermore, the stirring body further comprises a second stirring part, the second stirring part comprises at least one second connecting section connected with the first shaft body, and second revolving sections connected with one ends, far away from the first shaft body, of the second connecting sections respectively, and the end parts, far away from the second revolving sections, of the second revolving sections are in a bent shape.

Furthermore, the material stirring body is provided with a slope surface, a plane where the slope surface is located and the inner wall of the bottom of the cavity, which is used for enclosing the shell, form an acute angle, and when the material stirring part rotates by taking the axis of the second shaft body as a rotating shaft, the slope surface is located on the front side of the rotating direction of the material stirring body, so that the powder is stirred and scraped to the position between the bottom surface of the material stirring body and the bottom of the cavity along the slope surface by the material stirring body.

Furthermore, the powder feeding mechanism further comprises a material blocking unit, the material blocking unit is provided with a material blocking portion, the material blocking portion extends towards the inside of the containing cavity and is used for preventing the powder in the containing cavity from rotating integrally along with the stirring unit when the stirring unit is used for stirring the powder in the containing cavity, and the material blocking portion is arranged on the inner wall of the shell between the stirring portion and the material stirring portion.

Further, the first supporting portion comprises four supporting bodies, and the four supporting bodies are arranged in a cross shape.

Further, the second supporting part and the shell are of an integrated structure.

The embodiment of the application also discloses: a dust aerosol generator comprises the powder feeding mechanism and a powder spraying mechanism.

The utility model has the advantages as follows:

the utility model provides a powder feeding mechanism, its stirring physical stamina stirs the powder that holds the intracavity portion and store up makes the powder that holds the intracavity and store up can be when receiving the stirring with the air mixing, keeps the fluffy state of powder, these fluffy state's powder and then follow gradually stirring of the material of dialling the ejection of compact oral area spills the casing, no matter be in promptly hold the intracavity powder still certainly ejection of compact oral area spills and is all loose, fluffy by the powder of the injection assembly who is transmitted to the powder generator who assembles this powder feeding mechanism, can not take place the caking, and then guarantees the emergence effect of rear end powder aerosol.

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 structural view of a powder feeding mechanism in an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a stirring unit in an embodiment of the present invention;

reference numerals of the above figures:

1. a material storage unit; 11. a housing; 111. a feeding opening part; 112. a discharge opening part;

2. a stirring unit; 21. a stirring section; 211. a first shaft body; 212. a stirring body; 212a, a first stirring piece; 2121. a first connection section; 2122. a first revolution segment; 212b, a second stirring piece; 2123. a second connection section; 2124. a second swing section; 22. a material poking part; 221. a second shaft body; 222. a material stirring body; 2221. a slope surface; 23. a first support section; 231. a support body;

3. a material blocking part.

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.

The utility model provides a powder feeding mechanism, its includes storage unit 1 and is used for right the stirring unit 2 that the powder in storage unit 1 stirs, wherein: the storage unit 1 comprises a shell 11, a cavity for containing the powder is formed in the shell 11, a feeding port 111 communicated with the cavity so as to fill the powder into the cavity is formed in the top of the shell 11, and a discharging port 112 communicated with the cavity is formed in the bottom of the shell 11; the stirring unit 2 comprises a stirring part 21, the stirring part 21 comprises a first shaft body 211 and a stirring body 212 fixedly connected with the first shaft body 211, and the stirring body 212 extends in the cavity, so that when the stirring part 21 rotates by taking the axis of the first shaft body 211 as a rotating shaft, the stirring body 212 can stir and disperse powder materials accumulated in the cavity; the stirring unit 2 further comprises a material stirring part 22 disposed below the stirring part 21, the material stirring part 22 comprises a second shaft 221 and a plurality of material stirring bodies 222 disposed around the second shaft 221, so that when the material stirring part 22 rotates with an axis of the second shaft 221 as a rotating shaft, the material stirring bodies 222 can stir the powder at the bottom of the cavity, so that the powder stirred by the stirring body 212 is stirred to the discharging opening part 112 and discharged from the discharging opening part 112 out of the storage unit 1.

By means of the above structure, in the powder feeding mechanism provided in this embodiment, the stirring body 212 can stir and disperse the powder stored in the cavity, so that the powder stored in the cavity can be mixed with air while being stirred, and the fluffy state of the powder is maintained, and the fluffy powder gradually leaks out of the housing 11 from the discharge port 112 under stirring of the stirring body 222, that is, the powder in the cavity or the powder leaked out of the discharge port 112 and conveyed to the injection assembly of the powder aerosol generator equipped with the powder feeding mechanism is loose and fluffy, and does not agglomerate, thereby ensuring the generation effect of the rear-end powder aerosol.

Specifically, the housing 11 may be in a hopper shape, and the material inlet portion 111 is located at the top of the housing, that is, it can be understood that the material inlet portion 111 and the material outlet portion 112 are both notches formed in the housing 11. Preferably, the first shaft body 211 is coaxial with the second shaft body 221, and the first shaft body 211 and the second shaft body 221 are of an integrated structure, so that the first shaft body 211 and the second shaft body 221 can be driven by a driving device to drive the stirring part 21 and the material stirring part 22 to stir the powder.

The stirring body 212 includes a first stirring part 212a, the first stirring part 212a includes at least one first connection section 2121 connected to the first shaft body 211, and first rotation sections 2122 respectively connected to ends of the first connection sections 2121 far from the first shaft body 211, and rotation surfaces formed by the first rotation sections 2122 when being driven by the first shaft body 211 to rotate are close to an inner wall of the housing 11 for enclosing the cavity. In the process that the powder continuously leaks from the discharge port 112, the powder located in the cavity continuously sinks, for example, the inner wall of the housing 11 has a slope angle (such as the hopper-shaped housing 11 described above), and the powder continuously sinking is compressed under the combined action of the inner wall of the housing 11 and the powder above the inner wall, and because the first rotation section 2122 is configured to be close to the inner wall of the cavity (has a certain gap), the powder relatively squeezed and compressed is sufficiently stirred in the rotation process of the first rotation section 2122, so that the powder is prevented from caking.

The stirring body 212 further includes a second stirring member 212b, the second stirring member 212b includes at least one second connecting section 2123 connected to the first shaft body 211, and second revolving sections 2124 respectively connected to ends of the second connecting sections 2123 far away from the first shaft body 211, and ends of the second revolving sections 2124 far away from the second revolving sections 2124 are curved. Specifically, the end of the second rotating section 2124 may be arc-shaped, C-shaped, S-shaped, U-shaped, etc. to enhance the stirring effect.

The material stirring body 222 has a slope 2221, a plane where the slope 2221 is located and an inner wall of the bottom of the housing 11, which is used for enclosing the cavity, form an acute angle, and when the material stirring part 22 rotates with an axis of the second shaft 221 as a rotating shaft, the slope 2221 is located at a front side of a rotating direction of the material stirring body 222, so that the powder material is stirred and scraped between a bottom surface of the material stirring body 222 and the bottom of the cavity along the slope 2221 by the material stirring body 222. The slope 2221 can better scrape and pull the powder to the discharge opening 112, and can also prevent the powder from blocking the material pulling part 22.

Considering that the end of the stirring unit 2 facing the feeding port 111 is not supported and does not have a stable bearing fulcrum, the stirring unit 2 may further include a first supporting portion 23, the first supporting portion 23 is disposed at the top end of the first shaft 211 and includes a plurality of supporting bodies 231 arranged around the first shaft 211, an end of all the supporting bodies 231 away from the first shaft 211 is located on a circle with a center on a rotation axis of the first shaft 211, the storing unit 1 includes an annular second supporting portion, the second supporting portion surrounds the first supporting portion 23 and is in clearance fit with an end of all the supporting bodies 231 away from the first shaft 211, so that when the first shaft 211 drives the stirring body 212 to stir the powder stored in the cavity, all the supporting bodies 231 can rotate with the first shaft 211 in a space surrounded by the second supporting portion, thereby allowing the tip of the first shaft body 211 to have a stable position. In this way, the first supporting portion 23 not only can provide a stable bearing fulcrum for the stirring unit 2, but also can assist in stirring the powder.

Specifically, the first supporting portion 23 may include four supporting bodies 231, and the four supporting bodies 231 are arranged in a cross shape. The center of the first supporting portion 23 is located on the second shaft 221, and too few supporting bodies 231 do not have a supporting effect, while too many supporting bodies 231 increase the rotational resistance of the stirring unit 2. Furthermore, the second support portion is of an integral structure with the housing 11, i.e. the second support portion may be considered as a part of the housing 11.

Further, the powder feeding mechanism further comprises a material blocking unit, the material blocking unit is provided with a material blocking portion 3, the material blocking portion extends towards the inside of the containing cavity and is used for preventing the powder in the containing cavity from rotating along with the whole stirring unit 2 when the powder in the containing cavity is stirred, and the material blocking portion is arranged on the inner wall of the shell 11 and located between the stirring portion 21 and the material stirring portion 22.

The embodiment of the application also discloses: a dust aerosol generator comprises the powder feeding mechanism and a powder spraying mechanism. The powder feeding mechanism and the powder spraying mechanism can transmit powder through the powder transmission mechanism.

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 powder feeding mechanism, its characterized in that, includes storage unit and is used for right the stirring unit that powder in the storage unit stirs, wherein:

2. The powder feeding mechanism of claim 1, wherein the first shaft is coaxial with the second shaft, and the first shaft and the second shaft are of a unitary structure.

3. The powder feeding mechanism of claim 2, wherein the stirring unit further comprises a first supporting portion disposed at a top end of the first shaft, the first supporting portion comprises a plurality of supporting bodies arranged around the first shaft, an end of each of the supporting bodies away from the first shaft is located on a circle with a center on a rotation axis of the first shaft, and the storage unit comprises an annular second supporting portion surrounding the first supporting portion and in clearance fit with an end of each of the supporting bodies away from the first shaft, so that when the first shaft drives the stirring body to stir the powder stored in the cavity, all the supporting bodies can rotate with the first shaft in a space surrounded by the second supporting portion, thereby enabling the top end of the first shaft to have a stable position.

4. The powder feeding mechanism of claim 1, wherein the stirring body comprises a first stirring member, the first stirring member comprises at least one first connecting section connected to the first shaft, and a first revolving section connected to an end of each first connecting section away from the first shaft, and a revolving surface formed by each first revolving section when the first revolving section is driven by the first shaft to revolve is close to an inner wall of the housing for enclosing the cavity.

5. The powder feeding mechanism of claim 4, wherein the stirring body further comprises a second stirring member, the second stirring member comprises at least one second connecting section connected to the first shaft, and second revolving sections respectively connected to ends of the second connecting sections far away from the first shaft, and ends of the second revolving sections far away from the second revolving sections are curved.

6. The powder feeding mechanism of claim 1, wherein the material stirring body has a slope, a plane of the slope forms an acute angle with an inner wall of the bottom of the cavity surrounded by the housing, and when the material stirring part rotates around an axis of the second shaft as a rotating shaft, the slope is located at a front side of a rotating direction of the material stirring body, so that the powder is stirred by the material stirring body along the slope to a position between a bottom surface of the material stirring body and the bottom of the cavity.

7. The powder feeding mechanism of claim 1, further comprising a blocking unit, wherein the blocking unit has a blocking portion, the blocking portion extends toward the inside of the cavity and is used for preventing the powder in the cavity from integrally rotating along with the stirring unit when the stirring unit stirs the powder in the cavity, and the blocking portion is disposed on the inner wall of the housing between the stirring portion and the stirring portion.

8. The powder feeding mechanism of claim 3, wherein said first support portion comprises four of said support bodies, said four support bodies being arranged in a cross-shape.

9. The powder feeding mechanism of claim 3, wherein the second support portion is integrally formed with the housing.

10. A dust aerosol generator comprising a powder supply means as claimed in any one of claims 1 to 9 and a powder injection means.