CN215583176U

CN215583176U - Aerosol generator

Info

Publication number: CN215583176U
Application number: CN202121509880.7U
Authority: CN
Inventors: 欧阳俊伟
Original assignee: Shenzhen IVPS Technology Co Ltd
Current assignee: Shenzhen IVPS Technology Co Ltd
Priority date: 2021-07-03
Filing date: 2021-07-03
Publication date: 2022-01-21
Anticipated expiration: 2031-07-03

Abstract

The utility model discloses an aerosol generator which comprises a shell and a dustproof cover assembly, wherein the shell is provided with a packing groove used for placing a smokeable material, the dustproof cover assembly comprises a lower cover, at least one rotary vane and an upper cover, the lower cover is tightly fixed at the opening end of the packing groove and is provided with a first through hole communicated with the opening end, the upper cover can rotatably cover the lower cover and is provided with a second through hole coaxial with the first through hole, the rotary vane is positioned between the lower cover and the upper cover, one side of the rotary vane is rotatably connected with the lower cover, the other side of the rotary vane is slidably connected with the upper cover, and when the upper cover is stressed to rotate, the upper cover drives the at least one rotary vane to slide so that the at least one rotary vane rotates relative to the lower cover and blocks or communicates the first through hole and the second through hole. The upper cover is rotated around the center of the upper cover, so that the opening and closing of the rotary vane are controlled, the opening end of the packing groove is opened and closed, and the operation is convenient and reliable.

Description

Aerosol generator

Technical Field

The present invention relates to an aerosol generator.

Background

Existing aerosol generators are provided with a filler channel into which the smokable material is inserted, however, when the user removes the smokable material, the open end of the filler channel is open and always exposed. This allows the aerosol within the device to emanate from the open end, while external dust or contaminants can also enter the filler channel via the open end, causing contamination of the device. In order to prevent dust or contaminants from entering the filler trough from the opening, a silicone plug or dust cap is usually provided on the device. However, although the silica gel plug is simple to operate, the silica gel plug is easy to lose; on the other hand, the existing dust cover is usually a sliding mechanism arranged outside the equipment, so that the attractiveness of a product is influenced, and the problems that the dust cover is inconvenient to operate in place due to the fact that the opening and closing stroke of the dust cover is large and the like usually exist.

Thus, the prior art is yet to be improved and enhanced.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide an aerosol generator, aiming at improving the convenience of operation and the opening and closing stability of a dustproof cover.

In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:

the utility model provides an aerosol generator, includes casing and dust cap subassembly, the casing is equipped with the packing groove that is used for placing the smokable material, the dust cap subassembly includes lower cover, an at least spiral leaf and upper cover, the lower cover fasten in the open end of packing groove and be equipped with the first through-hole that the open end is linked together, the rotatable cover of upper cover in the lower cover is equipped with the coaxial second through-hole with first through-hole, the spiral leaf is located between lower cover and the upper cover, and one side and lower cover rotate and be connected, opposite side and upper cover sliding connection, when the upper cover atress is rotatory, the upper cover moves at least one the spiral leaf slides, so that at least one the spiral leaf for the lower cover rotates to the separation or intercommunication first through-hole and second through-hole.

The aerosol generator, wherein, the lower cover orientation the upper cover be equipped with at least one with the rotation post that the rotary vane is corresponding, at least one the rotation post is central symmetry for the center of first through-hole distributes, at least one the rotary vane is equipped with the rotation hole, the rotatable cover in rotation hole is located corresponding rotation post.

The aerosol generator is characterized in that one side, facing the lower cover, of the upper cover is provided with at least one avoidance groove corresponding to the rotating column, and the extending direction of the avoidance groove is overlapped with the track generated by the rotating column moving relative to the upper cover.

The aerosol generator, wherein, the upper cover orientation the lower cover be equipped with at least one with the guide post that the rotary vane is corresponding, at least one the guide post is central symmetry for the center of second through-hole distributes, at least one the rotary vane is equipped with the guide way of adaptation, the guide post slidable stretches into corresponding guide way, and each guide post is located the same position of corresponding guide way to make at least one the rotary vane is central symmetry and distributes.

The aerosol generator is characterized in that an arc-shaped concave edge is arranged on one side, close to the first through hole, of at least one rotary vane, when the upper cover rotates and drives at least one guide post to slide to the first end of the corresponding guide groove, the at least one rotary vane rotates to surround each arc-shaped concave edge relative to the lower cover, and a third through hole communicated with the first through hole and the second through hole is formed to open the opening end.

The aerosol generator, wherein, at least one the rotary vane is equipped with the shielding part, works as the upper cover is rotatory to when driving the guide post and sliding to the second end of guide way, at least one the rotary vane for the lower cover rotates to each shielding part laminating, and forms the separation the baffle of first through-hole and second through-hole, in order to seal the open end.

The aerosol generator is characterized in that the upper cover comprises a top plate provided with the second through hole and a side plate, the side plate is vertically connected with the edge of the top plate and surrounds a cylindrical structure sleeved on the lower cover, at least one avoidance hole matched with the rotary vane is formed in the joint of the side plate and the top plate, and when the rotary vane opens the opening end, the rotary vane partially extends into the corresponding avoidance hole.

The aerosol generator, wherein, the protruding spacing knot that has stretched of inner wall of curb plate, form the spacing groove that extends along the circumferential direction between lower cover and the casing, corresponding spacing inslot is gone into to spacing knot card to can follow the extending direction removal of spacing groove.

The aerosol generator further comprises a sleeve and a sleeve, the sleeve is rotatably sleeved on the shell and fixedly connected with one end, facing the lower cover, of the upper cover, and the sleeve is fastened and covered on the upper cover and the sleeve and provided with a fourth through hole communicated with the second through hole.

The aerosol generator is characterized in that at least one arc convex hull is convexly arranged on one side of the lower cover facing the upper cover, and the side of the upper cover facing the lower cover forms smooth point contact with each arc convex hull.

Has the advantages that: the utility model provides an aerosol generator which comprises a shell and a dustproof cover assembly, wherein the shell is provided with a packing groove used for placing a smokeable material, the dustproof cover assembly comprises a lower cover, at least one rotary vane and an upper cover, the lower cover is tightly fixed at the opening end of the packing groove and is provided with a first through hole communicated with the opening end, the upper cover can rotatably cover the lower cover and is provided with a second through hole coaxial with the first through hole, the rotary vane is positioned between the lower cover and the upper cover, one side of the rotary vane is rotatably connected with the lower cover, the other side of the rotary vane is slidably connected with the upper cover, and when the upper cover is stressed to rotate, the upper cover drives the at least one rotary vane to slide so that the at least one rotary vane rotates relative to the lower cover and blocks or communicates the first through hole and the second through hole. The upper cover is rotated around the center of the upper cover, so that the opening and closing of the rotary vane are controlled, the opening end of the packing groove is opened and closed, and the operation is convenient and reliable.

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 the structures shown in the drawings without creative efforts.

FIG. 1 is a perspective view of a preferred embodiment of an aerosol generator of the present invention in a first state;

FIG. 2 is a perspective view of a second state of the preferred embodiment of the aerosol generator of the present invention;

FIG. 3 is an exploded view of a preferred embodiment of the aerosol generator of the present invention;

FIG. 4 is a perspective view of a lower cap in a preferred embodiment of the aerosol generator of the present invention;

FIG. 5 is a perspective view of the upper cap of the preferred embodiment of the aerosol generator of the present invention;

FIG. 6 is a schematic view of the lid and the rotary vane in a first state in accordance with a preferred embodiment of the aerosol generator of the present invention;

FIG. 7 is a schematic view of the lower cap and the rotary vane in a first state in accordance with a preferred embodiment of the aerosol generator of the present invention;

FIG. 8 is a schematic view of the lid and the rotary vane in a second state in accordance with the preferred embodiment of the aerosol generator of the present invention;

FIG. 9 is a schematic view of the lower cap and the rotary vane in a second state in accordance with the preferred embodiment of the aerosol generator of the present invention;

fig. 10 is a cross-sectional view of a preferred embodiment of the aerosol generator of the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				1	Shell body	2	Dust cover assembly
3	Limiting groove	11	Packing groove
				12	Open end	21	Upper cover
22	Rotary vane	23	Lower cover
				211	Top board	212	Side plate
213	Guide post	214	Avoiding groove
				215	Slotting	216	Elastic arm
217	Limit button	221	Rotating hole
				222	Guide groove	2221	First end
2222	Second end	223	Arc concave edge
				224	Arc flange	225	Sharp corner
231	Rotating column	232	Avoiding hole
				233	Arc convex hull	24	First through hole
25	Second through hole	26	Sleeve barrel
				27	Shell	28	Fourth through hole
201	Baffle plate	202	Third through hole
				226	Shielding part

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Fig. 1-10 are schematic views of an aerosol generator according to a preferred embodiment of the present invention. The aerosol generator comprises a housing 1 and a dust cap assembly 2. The housing 1 is provided with a stuffing box 11 for the placement of smokable material. The dust cap assembly 2 includes an upper cap 21, at least one rotary vane 22 and a lower cap 23. The lower cover 23 is fastened to the open end 12 of the stuffing box 11 and is provided with a first through hole 24 communicating with the open end 12. The upper cover 21 is rotatably covered on the lower cover 23 and is provided with a second through hole 25 coaxial with the first through hole 24. At least one of the rotary vanes 22 is located between the lower cover 23 and the upper cover 21, and one side of the rotary vane is rotatably connected with the lower cover 23 while the other side is slidably connected with the upper cover 21. When the upper cover 21 is forced to rotate relative to the lower cover 23, the upper cover 21 drives at least one of the rotary vanes 22 to slide, so that at least one of the rotary vanes 22 rotates relative to the lower cover 23, and the first through hole 24 and the second through hole 25 are blocked or communicated. In the embodiment, the upper cover 21 is rotated to drive the rotary vane 22 to rotate relative to the lower cover 23, so that when the rotary vane 22 is communicated with the first through hole 24 and the second through hole 25, the opening of the filling groove 11 is opened, and a user can add a smokeable material conveniently and use the smokeable material normally; when the rotary vane 22 blocks the first through hole 24 and the second through hole 25, the opening end 12 is closed, and the dustproof effect is achieved. The dustproof cover structure is simple to operate, and is stable and reliable.

In this embodiment, a heating assembly is disposed in the stuffing box 11, and the heating manner of the heating assembly may be center heating, peripheral household heating, infrared heating, electromagnetic heating, or air heating. Smokable material is placed into the filler channel 11 and cryogenically heated by the heating assembly to produce an aerosol. Wherein the smokable material may be solid tobacco tar, tobacco particles, naturally arranged tobacco shreds, or orderly arranged tobacco shreds, etc. Preferably, the smokable material is formed as a cylindrical structure, and correspondingly, the stuffing box 11 is a cylindrical box sized and shaped to fit the smokable material, so that the open end 12 of the stuffing box 11 is circular. Preferably, the first through hole 24 and the second through hole 25 are circular holes coaxial with the circular opening. The diameters of the first through hole 24 and the second through hole 25 are not smaller than the diameter of the circular opening. Preferably, the diameters of the first through hole 24, the second through hole 25 and the circular through hole are equal, so that the first through hole, the second through hole and the circular through hole are sequentially communicated, the inner wall of the first through hole, the second through hole and the circular through hole can limit the pumpable material placed in the filling groove 11, and the part of the pumpable material extending out of the filling groove 11 is prevented from shaking.

In this embodiment, as shown in fig. 4, the lower cover 23 has a ring structure, one side of which is attached to the opening end 12 of the stuffing box 11 and is provided with a first connecting hole. Correspondingly, the end face of the opening end 12 of the stuffing box 11 is provided with a second connecting hole, and the lower cover 23 is fastened to the housing 1 by sequentially passing a connecting piece through the second connecting hole and the first connecting hole. At least one rotating column 231 corresponding to the rotary vane 22 is disposed on one side of the lower cover 23 facing the upper cover 21, and the at least one rotating column 231 is distributed in a centrosymmetric manner with the center of circle of the first through hole 24 as the center of symmetry. Correspondingly, at least one of the rotary vanes 22 is provided with a rotary hole 221 adapted to the rotary column 231, and each rotary hole 221 is rotatably sleeved on the corresponding rotary column 231, so that each rotary vane 22 is rotatably connected to the lower cover 23. Each subsequent rotary vane 22 is driven by the upper cover 21 to rotate around the corresponding rotary column 231. In practical applications, the rotation hole 221 may be a through hole or a blind hole. Preferably, the rotation hole 221 is a through hole, and the rotation post 231 protrudes for a length greater than the depth of the rotation hole 221, so that the rotation post 231 passes through the rotation hole 221 to protrude out of the side of the rotary vane 22 facing the upper cover 21. Accordingly, as shown in fig. 5, at least one space-avoiding groove 214 is formed on the side of the upper cover 21 facing the lower cover 23 corresponding to the rotating post 231. The extending direction of the avoiding groove 214 coincides with the track generated by the rotation column 231 moving relative to the upper cover 21. That is, the avoiding groove 214 is a U-shaped groove, and the avoiding groove 214 corresponding to each rotating post 231 encloses a circle coaxial with the first through hole 24 and the second through hole 25. The rotation column 231 is kept away by the keeping away groove 214, and can play a guiding role.

In order to make at least one of the rotary vanes 22 be distributed in central symmetry with respect to the symmetry center of the rotary column 231, the freedom of the rotary vane 22 is restricted by the upper cover 21, so that each rotary vane 22 can only move along the limiting direction of the upper cover 21. In the present embodiment, as shown in fig. 5 and 6, the upper cover 21 includes a top plate 211 and a side plate 212. The top plate 211 is provided with the second through hole 25. The second through hole 25 is located at the center of the top plate 211, so that the second through hole 25 rotates coaxially with the top plate 211 without eccentric rotation when the top plate 211 rotates. The side plate 212 is vertically connected with the edge of the top plate 211 and encloses a cylindrical structure, the inner diameter of the cylindrical structure is matched with the outer diameter of the lower cover 23, and the cylindrical structure is rotatably sleeved on the lower cover 23. Preferably, the top plate 211 is coaxially installed with the lower cover 23, so as to ensure coaxial rotation of the upper cover 21 and the lower cover 23, and thus ensure that the overlapping area is the largest when the first through hole 24 and the second through hole 25 are communicated. In this embodiment, the upper cover 21 is self-driven around its central axis to drive the rotary vane 22 to open and close, so that the operation is convenient.

In order to limit the rotation of the upper cover 21 while preventing the upper cover 21 from being displaced in the axial direction. As shown in fig. 5 and 10, a limit buckle 217 is protruded on an inner wall of the side plate 212, and a limit groove 3 extending in a circumferential direction is formed between the lower cover 23 and the housing 1. The limit buckle 217 is clamped in the corresponding limit groove 3 and can move along the extending direction of the limit groove 3. Preferably, the length of the limit groove 3 extending in the circumferential direction is equal to the rotation of the upper cover 21. That is, when the upper cover 21 rotates until the limit buckle 217 abuts against one end of the limit groove 3, the rotary vane 22 opens and communicates the first through hole 24 and the second through hole 25, and opens the opening end 12; when the upper cover 21 rotates to the position-limiting buckle 217 is abutted against the other end of the position-limiting groove 3, the open end 12 blocks the first through hole 24 and the second through hole 25, and the open end 12 is closed. In practical applications, the side plate 212 is provided with at least one slot 215 extending along the axial direction, the slot 215 is internally provided with an elastic arm 216 protruding towards the lower cover 23 along the axial direction, and one end of the elastic arm 216 facing towards the lower cover 23 is provided with the limit buckle 217. The limit buckle 217 is clamped into the corresponding limit groove 3 through the elastic swing of the elastic arm 216, so that the damage probability of the limit groove 3 is reduced. Preferably, the at least one slot 215 and the resilient arms 216 are evenly distributed along the circumferential direction of the side plate 212, so that the upper cover 21 is evenly restricted in all directions.

Further, referring to fig. 4 and 5, at least one guiding column 213 is disposed on a side of the top plate 211 facing the lower cover 23, and the number of the guiding columns 213 is equal to the number of the rotary vanes 22. At least one of the guide posts 213 is disposed in a central symmetry manner with the center of the second through hole 25 as a center of symmetry. That is, the centers of symmetry of the guide post 213 and the rotation post 231 are located on the same central axis. Correspondingly, at least one rotary vane 22 is provided with a guide groove 222 matched with the guide column 213. The guide groove 222 is a U-shaped groove. Each guide column 213 extends into the corresponding guide slot 222 and is located at the same position of the corresponding guide slot 222, so that each rotary vane 22 is limited, each rotary vane 22 is also distributed in a central symmetry manner, and the symmetry center of each rotary vane is located on the same central axis line with the symmetry centers of the guide columns 213 and the rotary columns 231. In this way, the respective rotary vanes 22 are always in a synchronized state with respect to the center of symmetry. In practical applications, the guiding groove 222 may or may not extend through the rotary vane 22. Preferably, the guide slot 222 is a U-shaped through slot penetrating through the rotary vane 22, and the length of the guide column 213 protruding is greater than the thickness of the rotary vane 22, that is, the guide column 213 passes through the corresponding guide slot 222 and protrudes out of one side of the rotary vane 22 facing the lower cover 23. Correspondingly, the lower cover 23 is provided with adaptive U-shaped holes, the extending direction of the U-shaped holes coincides with the rotation track of the guide column 213, and each U-shaped hole encloses a circle coaxial with the second through hole 25. In this embodiment, the guide column 213 is cleared through the U-shaped hole, and the guide column 213, which extends out of the rotary vane 22, extends into the clearance hole 232, thereby playing a guiding role.

Further, as shown in fig. 6 and 7, an arc-shaped concave edge 223 is formed on one side of the rotary vane 22 close to the first through hole 24. In this embodiment, the rotary vane 22 is radially outward around the rotary hole 221 to form a fan-like structure. The arc-shaped concave edge 223 is located at a side close to the first through hole 24, and the guide groove 222 is located at a side far from the first through hole 24. When the upper cover 21 rotates and drives the at least one guiding post 213 to slide to the first end 2221 of the corresponding guiding slot 222, the at least one rotary vane 22 rotates around the corresponding rotary post 231 and mutually disperses along the direction away from the center to the arc-shaped concave edges 223 to surround, and forms a third through hole 202 respectively communicated with the first through hole 24 and the second through hole 25, so as to open the open end 12. At this time, one end of the rotary vane 22 away from the center extends out of the outer periphery of the lower cover 23. Correspondingly, at least one avoiding hole 232 matched with the rotary vane 22 is arranged at the joint of the side plate 212 and the top plate 211, and the part of the rotary vane 22 extending out of the lower cover 23 extends into the avoiding hole 232. In practical applications, the radius of the arc-shaped concave edge 223 is greater than or equal to the radius of the first through hole 24, so that the diameter of the third through hole 202 is greater than or equal to the diameter of the second through hole 25, thereby ensuring that the second through hole 25 can be fully exposed from the third through hole 202. The smokable material may pass through the second through hole 25, the third through hole 202, the first through hole 24 and the open end 12 in sequence into the filler channel 11. In practical applications, the rotary vane 22 may be one, two or more. The arc, arc length and radius of the arc-shaped concave edge 223 can be adjusted according to the number of the rotary vanes 22 to fit the first through holes 24.

Further, referring to fig. 7-9, the rotary vane 22 is provided with a shielding portion 226, the shielding portion 226 includes a first side surface formed by the arc-shaped concave edge 223 and a second side surface formed by the arc-shaped flange 224, the first side surface and the second side surface are connected, and a sharp corner 225 is formed at the connection position of the first side surface and the second side surface. The arc-shaped concave edge 223 is matched with the arc-shaped flange 224, namely the arc and the radius of the arc-shaped concave edge 223 and the arc-shaped flange 224 are equal. When the upper cover 21 rotates and drives the guiding columns 213 to slide to the second ends 2222 of the corresponding guiding slots 222, the sharp corners 225 of at least one rotary vane 22 gather toward the center, and the first side surface and the second side surface of the adjacent rotary vane 22 completely fit to form the baffle 201 covering the first through hole 24, thereby blocking the first through hole 24 and the second through hole 25 and closing the opening end 12.

In this embodiment, at least one arc-shaped convex hull 233 is convexly provided on a side of the lower cover 23 facing the upper cover 21, and a side of the upper cover 21 facing the lower cover 23 forms a smooth point contact with the arc-shaped convex hulls 233. By providing the arc-shaped convex hull 233 to change the surface-to-surface contact between the upper cover 21 and the lower cover 23 into smooth point contact, the contact area between the upper cover 21 and the lower cover 23 can be significantly reduced, and the rotation resistance of the upper cover 21 can be reduced. Preferably, the at least one arc-shaped convex hull 233 is uniformly distributed on the lower cover 23, so that the upper cover 21 and the lower cover 23 form uniformly distributed point contacts, and the rotation of the upper cover 21 is more stable and smooth.

In this embodiment, as shown in fig. 1-3, the aerosol generator further comprises a sleeve 26 and a sleeve 27. The sleeve 26 is rotatably sleeved on the housing 1 and is fixedly connected with one end of the upper cover 21 facing the lower cover 23. Specifically, the end surface of the sleeve 26 facing the upper cover 21 is provided with at least one notch, the side plate 212 is convexly provided with a fixing block matched with the notch along the axial direction, and the fixing block is clamped into the corresponding notch, so that the upper cover 21 is tightly connected with the sleeve 26. The sleeve 27 is fastened to cover the upper cover 21 and the sleeve 26, and is provided with a fourth through hole 28 communicating with the second through hole 25. In the embodiment, the clamping groove is arranged on the inner wall of the sleeve 27, and the sleeve 27 is fastened on the sleeve 26 in a manner of arranging the buckle on the outer wall of the sleeve 26. Of course, the casing 27 may be fixed by riveting or screwing. In practical applications, the casing 27 and the sleeve 26 may be made of heat insulating materials, so that heat loss from the filler tank 11 in the housing 1 can be reduced and heating efficiency can be improved. The user drives the sleeve 26 and the upper cover 21 to rotate relative to the lower cover 23 and the housing 1 through the rotating sleeve 27, so as to open and close the opening and closing port of the stuffing box 11. On the other hand, the opening and closing of the dust cap is controlled by rotating the sleeve 27 around its central axis by applying force, and the opening and closing of the dust cap hardly affects the overall appearance of the device and is easy to control.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The aerosol generator is characterized by comprising a shell and a dustproof cover assembly, wherein the shell is provided with a packing groove used for placing a smokeable material, the dustproof cover assembly comprises a lower cover, at least one rotary vane and an upper cover, the lower cover is fixedly arranged at the opening end of the packing groove and is provided with a first through hole communicated with the opening end, the upper cover can rotate and cover the lower cover and is provided with a second through hole coaxial with the first through hole, the rotary vane is positioned between the lower cover and the upper cover, one side of the rotary vane is rotatably connected with the lower cover, the other side of the rotary vane is slidably connected with the upper cover, and when the upper cover is rotated under stress, the upper cover moves the at least one rotary vane to slide, so that the at least one rotary vane rotates relative to the lower cover and blocks or communicates the first through hole and the second through hole.

2. The aerosol generator as claimed in claim 1, wherein the lower cap has at least one rotation post corresponding to the rotation blade toward the upper cap, the at least one rotation post is centrally symmetrically distributed with respect to the center of the first through hole, and the at least one rotation blade has a rotation hole rotatably sleeved on the corresponding rotation post.

3. An aerosol generator as claimed in claim 2, wherein the upper cover is provided with at least one avoiding groove corresponding to the rotary column on a side thereof facing the lower cover, and the extending direction of the avoiding groove coincides with a track generated by the rotary column moving relative to the upper cover.

4. The aerosol generator as claimed in claim 1, wherein the upper cover is provided with at least one guiding post corresponding to the rotary vane toward the lower cover, the at least one guiding post is arranged in a central symmetrical manner with respect to the center of the second through hole, the at least one rotary vane is provided with a matching guiding groove, the guiding post slidably extends into the corresponding guiding groove, and each guiding post is located at the same position of the corresponding guiding groove, so that the at least one rotary vane is arranged in a central symmetrical manner.

5. The aerosol generator as claimed in claim 4, wherein at least one of the rotary vanes has an arc-shaped concave edge on a side thereof adjacent to the first through hole, and when the upper cover rotates and drives the at least one guide post to slide to the first end of the corresponding guide groove, the at least one rotary vane rotates relative to the lower cover until the arc-shaped concave edges surround each other and form a third through hole respectively communicating with the first through hole and the second through hole to open the open end.

6. The aerosol generator as claimed in claim 4, wherein at least one of the rotary vanes has a shielding portion, and when the upper cover rotates and drives the guide post to slide to the second end of the guide groove, the at least one rotary vane rotates relative to the lower cover until the shielding portions are attached to each other, and a baffle plate for blocking the first through hole and the second through hole is formed to close the opening end.

7. The aerosol generator as claimed in claim 1, wherein the upper cover includes a top plate having the second through hole, and a side plate, the side plate is vertically connected to an edge of the top plate and defines a cylindrical structure sleeved on the lower cover, and a connection portion between the side plate and the top plate is provided with at least one clearance hole adapted to the rotary vane, and when the rotary vane opens the opening end, the rotary vane partially extends into the corresponding clearance hole.

8. The aerosol generator as claimed in claim 7, wherein a retaining buckle protrudes from an inner wall of the side plate, a retaining groove extending along a circumferential direction is formed between the lower cover and the housing, and the retaining buckle is clamped into the corresponding retaining groove and can move along an extending direction of the retaining groove.

9. The aerosol generator as set forth in claim 1, further comprising a sleeve rotatably fitted over the housing and fixedly connected to an end of the upper cap facing the lower cap, and a sleeve tightly covering the upper cap and the sleeve and having a fourth through hole communicating with the second through hole.

10. An aerosol generator as set forth in claim 1 wherein the lower cap has at least one arcuate convex protrusion protruding from a side of the lower cap facing the upper cap, and wherein the side of the upper cap facing the lower cap forms a rounded point contact with each arcuate convex protrusion.