CN112772970B - Fragrance-dropping hollow filter stick tow perfuming device and using method - Google Patents
Fragrance-dropping hollow filter stick tow perfuming device and using method Download PDFInfo
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- CN112772970B CN112772970B CN202110178028.4A CN202110178028A CN112772970B CN 112772970 B CN112772970 B CN 112772970B CN 202110178028 A CN202110178028 A CN 202110178028A CN 112772970 B CN112772970 B CN 112772970B
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- perfuming
- tow
- hollow filter
- filter stick
- pipe
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000003860 storage Methods 0.000 claims abstract description 16
- 239000000686 essence Substances 0.000 claims description 68
- 229920006221 acetate fiber Polymers 0.000 claims description 16
- 239000011550 stock solution Substances 0.000 claims description 2
- 235000019504 cigarettes Nutrition 0.000 abstract description 17
- 239000007788 liquid Substances 0.000 abstract description 13
- 239000007787 solid Substances 0.000 abstract description 8
- 230000000391 smoking effect Effects 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 4
- 238000002360 preparation method Methods 0.000 abstract description 3
- 235000013599 spices Nutrition 0.000 abstract 1
- 241000208125 Nicotiana Species 0.000 description 7
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 7
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 5
- 229920000742 Cotton Polymers 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 239000003205 fragrance Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000796 flavoring agent Substances 0.000 description 2
- 235000019634 flavors Nutrition 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000009987 spinning Methods 0.000 description 2
- 229920001747 Cellulose diacetate Polymers 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000001891 gel spinning Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000003094 microcapsule Substances 0.000 description 1
- 229920000747 poly(lactic acid) Polymers 0.000 description 1
- 239000004626 polylactic acid Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/02—Manufacture of tobacco smoke filters
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/06—Use of materials for tobacco smoke filters
- A24D3/08—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent
- A24D3/10—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent of cellulose or cellulose derivatives
Abstract
The invention provides a flavoring device for a fragrant dropping type hollow filter stick tow and a using method thereof, and relates to the technical field of preparation of cigarette materials, wherein the flavoring device for the fragrant dropping type hollow filter stick tow comprises a flavoring part and a base for supporting the flavoring part, the flavoring part comprises a circular disc, a tow through hole arranged on the circular disc and a flavoring pipe at least one part of which penetrates through the circular disc, the tow through hole and the circular disc are coaxially arranged, a placing groove is arranged on the base, at least one part of the circular disc is positioned in the placing groove, the flavoring pipe is connected with a spice storage tank, a rotating gear is arranged on the inner side wall of the placing groove, and engaging teeth for engaging with the rotating gear are arranged on the outer side of the circular disc. The cigarette filter stick is simple in structure, the smoking taste of cigarettes is effectively improved, the forming quality of a hollow filter stick is not influenced, essence can be added into hollow filter stick tows, solid essence and liquid essence can be added, and the perfuming amount is controllable.
Description
Technical Field
The invention relates to the technical field of preparation of tobacco materials,
in particular to a fragrant dripping type hollow filter stick tow perfuming device and a using method thereof.
Background
Along with the development of cigarette production technology, the cigarette types and the appearance are more diversified, and cigarettes with unique appearances are more popular with people, so that the novel hollow filter stick is produced.
The traditional flavoring process is to uniformly spray the flavoring into the cut tobacco according to a certain proportion. With the innovation of cigarette production technology, technologists develop hollow filter sticks as carriers for supplementing cigarette fragrance.
At present, the mode of adding fragrance in the hollow filter stick is to add essence into the acetate fiber tow. For example, chinese patent invention CN109793274A provides a flavored novel heating non-burning cigarette and a preparation method thereof. The cigarette comprises a tobacco material section, a tobacco shred end hollow filter stick section, a cooling section, a fiber tow filter section and a hollow section, wherein the cooling section is a hollow cavity body made of a paper tube and a polylactic acid sheet material layer coiled on the inner wall of the paper tube, a fragrant tow is arranged in the tobacco shred end hollow filter stick section or the cooling section or both the tobacco shred end hollow filter stick section and the cooling section, the fragrant tow is prepared by mixing fragrant microcapsules and cellulose diacetate according to the proportion of 0.1-0.2, dissolving the mixture in a solvent to prepare a spinning solution with the mass fraction of 15-25%, and then solidifying the spinning solution in a solidification bath consisting of the solvent and water through a dry-wet spinning machine to obtain the tow. The cigarette containing the aromatic tows are added into the hollow filter stick at the tobacco shred end through the filter stick forming machine, and the aroma can be slowly released when high-temperature smoke passes through, so that the aroma of the cigarette which is not combusted by heating is lasting, and meanwhile, the smoke temperature is reduced, and consumers can obtain better sensory experience.
There are other ways of perfuming: adding liquid essence into the filter stick tows by taking cotton threads as a carrier; or liquid fragrance is directly added on the inner wall of the hollow filter stick.
However, said perfuming means have significant drawbacks: the essence is added into the acetate fiber tow, so that the addition is troublesome, only liquid essence can be added, but solid essence cannot be added, the amount of the liquid essence adsorbed in the acetate fiber tow is small, the liquid essence is easy to volatilize, and the smoking taste is not guaranteed; the cotton thread is used as a carrier, the liquid essence is added into the filter stick tows, the cotton thread can absorb more liquid essence to achieve the smoking taste, but the cotton thread is used as the carrier, the tenacity of the acetate fiber tows is not provided, the hollow filter stick is poor in forming quality, and the solid essence cannot be added; if essence is directly added on the inner wall of the hollow filter stick after the hollow filter stick is formed, solid essence can be added, but the addition amount of the essence cannot be controlled, so that the addition amounts of the essence at different positions of the hollow filter stick are not accurate and uneven, and the addition amount of the hollow filter stick after the hollow filter stick is formed is small.
Therefore, in order to solve the problems, it is necessary to design a reasonably and efficiently perfuming device for the fragrant dripping type hollow filter stick tows.
Disclosure of Invention
The invention aims to provide the fragrance-dropping type hollow filter stick tow perfuming device which is simple in structure, effectively improves cigarette smoking taste, does not affect the forming quality of a hollow filter stick, can add essence, solid essence and liquid essence into hollow filter stick tows, and is controllable in perfuming amount.
In order to achieve the purpose, the invention is realized by adopting the following technical scheme:
the utility model provides a drip fragrant formula cavity filter rod silk bundle perfuming device, includes perfuming portion and is used for supporting the base of perfuming portion, perfuming portion include the circular disk, set up in silk bundle clearing hole on the circular disk and have at least partly to pass the perfuming pipe of circular disk, the silk bundle clearing hole with the coaxial setting of circular disk, be provided with the standing groove on the base, the circular disk has at least partly to be located in the standing groove, perfuming union coupling has the essence storage tank, the standing groove inside wall is provided with rotating gear, the circular disk outside be provided with be used for with rotating gear meshed's meshing tooth.
Preferably, according to the invention, said perfuming pipes are present in a number of at least one.
As a preference of the invention, a flow-limiting valve is arranged in the perfuming pipe.
Preferably, the width of the notch of the placement groove is smaller than the outer diameter of the circular plate, and at least half of the circular plate is positioned in the placement groove.
Preferably, the drive motor is connected to the rotary gear.
Preferably, the number of the rotating gears is at least one.
As a preference of the invention, the angle formed between the perfuming tube and the circular disc ranges from 45 ° to 90 °.
The invention also provides a use method of the perfuming device for the fragrant dripping type hollow filter stick tows, which comprises the following steps:
s1: vertically placing the circular disc of the perfuming part at the placing groove of the base;
s2: passing and maintaining the tow in transit from the tow passage aperture of the circular disc;
s3: the rotating gear drives the circular disc to rotate, so that the pipe orifice of the flavoring pipe rotates to the position above the tows;
s4: essence is added into an essence storage tank behind the perfuming pipe, so that the essence drops onto the conveyed tows from the pipe orifice of the perfuming pipe.
Preferably, in step S1, the width of the notch of the placing groove is smaller than the outer diameter of the circular plate, and at least half of the circular plate is placed in the placing groove, so that the circular plate is prevented from separating from the placing groove.
Preferably, in step S3, the circular plate is controlled to rotate by a driving motor connected to the rotating gear.
As a preferred embodiment of the present invention, step S4 is executed by adjusting the opening and closing of the flow-limiting valve disposed in the perfuming tube to adjust the dripping speed and the dripping switch of the essence reaching the nozzle of the perfuming tube.
The invention discloses a perfuming device for a fragrant dropping type hollow filter stick tow and a using method thereof, and has the beneficial effects that: the cigarette filter rod has the advantages of simple structure, effective improvement of cigarette flavor, no influence on the forming quality of the hollow filter rod, capability of adding essence, solid essence and liquid essence into the hollow filter rod filament bundle and controllable flavoring amount.
Drawings
FIG. 1 is a schematic perspective view of the overall structure of a hollow filter stick tow flavoring device of the invention;
FIG. 2 is a schematic structural diagram of a perfuming part of the perfuming device for a fragrant dripping type hollow filter stick tow of the invention;
FIG. 3 is a schematic view of the overall structure of a hollow filter rod tow flavoring device according to the present invention;
FIG. 4 is a schematic flow chart of a method for using the perfuming device for the fragrant hollow filter stick tows;
in the figure: 1. perfuming portion, 11, circular disk, 12, tow through hole, 13, perfuming pipe, 14, meshing tooth, 2, base, 21, standing groove, 22, rotating gear.
Detailed Description
The following are specific examples of the present invention and further describe the technical solutions of the present invention, but the present invention is not limited to these examples.
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the modules and steps set forth in these embodiments and steps do not limit the scope of the invention unless specifically stated otherwise.
Meanwhile, it should be understood that the flows in the drawings are not merely performed individually for convenience of description, but a plurality of steps are performed alternately with each other.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and systems known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
The first embodiment is as follows: as shown in fig. 1 to 3, which are only one embodiment of the present invention, a hollow filter stick tow flavoring device of a drip scent type includes a flavoring part 1 and a base 2 for supporting the flavoring part 1, wherein the flavoring part 1 includes a circular disk 11, a tow passing hole 12 formed on the circular disk 11, and a flavoring pipe 13 at least partially passing through the circular disk 11, the tow passing hole 12 is coaxially disposed with the circular disk 11, a placement groove 21 is formed on the base 2, at least a portion of the circular disk 11 is located in the placement groove 21, the flavoring pipe 13 is connected to a flavor storage tank, a rotating gear 22 is disposed on an inner side wall of the placement groove 21, and an engaging tooth 14 for engaging with the rotating gear 22 is disposed on an outer side of the circular disk 11.
In the invention, a perfuming part 1 is placed on a base 2, a tow through hole 12 for enabling an acetate fiber tow to pass through and a perfuming pipe 13 for enabling essence to pass through are arranged on a circular disc 11 of the perfuming part 1, the essence can be ensured to fall onto the acetate fiber tow from an outlet of the perfuming pipe 13 only by ensuring that an outlet end of the perfuming pipe 13 is positioned right above the acetate fiber tow passing through the tow through hole 12, and the perfumed acetate fiber tow is wrapped and cut by using forming paper to prepare the hollow filter stick.
Firstly, the structure of the perfuming part 1 is that the perfuming part 1 comprises a circular disc 11, a tow through hole 12 arranged on the circular disc 11 and a perfuming pipe 13 at least one part of which penetrates through the circular disc 11, the tow through hole 12 and the circular disc 11 are coaxially arranged, the perfuming pipe 13 is connected with an essence storage tank, and essence in the essence storage tank drops onto an acetate fiber tow through the perfuming pipe 13.
Then, the base 2 is configured, a placing groove 21 is provided on the base 2, at least a part of the circular disc 11 is located in the placing groove 21, a rotating gear 22 is provided on an inner side wall of the placing groove 21, an engaging tooth 14 for engaging with the rotating gear 22 is provided on an outer side of the circular disc 11, when the rotating gear 22 rotates, the circular disc 11 can be driven to rotate in an engaging manner, actually, a width of a notch of the placing groove 21 is smaller than an outer diameter of the circular disc 11, and at least a half of the circular disc 11 is located in the placing groove 21. In this way, the circular plate 11 can only slide into the placing groove 21 from the two ends of the placing groove 21 along the extending direction of the placing groove 21, and the circular plate 11 cannot slide out from the notch of the placing groove 21, so that the circular plate 11 can only be rotated by the driving of the rotating gear 22, and radial displacement cannot occur.
Of course, in order to further restrain the circular disk 11, a limit plate that can be sprung up may be provided in the placement groove 21, and the limit plate is retracted when the circular disk 11 is mounted into the placement groove 21; after the circular plate 11 is mounted in the placement groove 21, the limit plate is bounced to limit the axial displacement of the circular plate 11.
Therefore, the rotation of the circular disc 11 is adjusted by the rotating gear 22 of the base 2, so that the outlet end of the perfuming tube 13 is positioned right above the acetate fiber tow passing through the tow through hole 12, and essence is ensured to drop onto the acetate fiber tow through the perfuming tube 13.
And the tow passes through the hole 12 and is coaxial with the circular plate 11, so that the acetate tow always passes through the middle of the circular plate 11, namely, the transmission of the acetate tow is not influenced when the circular plate 11 rotates.
It is to be noted, of course, that the angle formed between the perfuming duct 13 and the circular disk 11 ranges from 45 ° to 90 °. The perfuming pipe 13 and the circular disk 11 can be vertically arranged, but generally, a certain included angle exists between the perfuming pipe 13 and the plane of the circular disk 11, and the distance between the outlet direction of the perfuming pipe 13 and the rotating shaft of the circular disk 11 is smaller than the distance between the essence storage tank and the rotating shaft of the circular disk 11, so that the height of the essence from the conveyed acetate fiber tow is very low when the essence passes through the outlet of the perfuming pipe 13, the position of the perfuming pipe 13 is convenient to rotate, and essence is prevented from dripping and deviating from the acetate fiber tow or splashing from the acetate fiber tow.
The perfuming device for the fragrant dropping type hollow filter stick tows is simple in structure, effectively improves cigarette smoking taste, does not affect the forming quality of the hollow filter stick, can add essence, solid essence and liquid essence into the hollow filter stick tows, and is controllable in perfuming amount.
Second embodiment, as also shown in fig. 1 to 3, is only one embodiment of the present invention, and on the basis of the first embodiment, in the perfuming device for a hollow filter plug tow according to the present invention, the number of the perfuming tubes 13 is at least one. When needs add multiple essence, avoid again that essence stock solution mixes when unrestrained, perfuming pipe 13 can have a plurality ofly this moment, and the rear end of each perfuming pipe 13 can set up the essence storage tank that has different essence of storage, rotates to the acetate tow top through perfuming pipe 13 with the difference in proper order, drips the essence of difference to the acetate tow respectively on.
In addition, a flow limiting valve is arranged in the perfuming pipe 13. The flow-limiting valve is opened, essence can flow to the perfuming pipe 13 from the essence storage tank, and the larger the opening of the flow-limiting valve is, the faster the speed of the essence storage tank flowing to the perfuming pipe 13 is. In a word, the dripping switch and the dripping speed of essence reaching the nozzle of the perfuming pipe are adjusted through the opening and the closing of the flow limiting valve arranged in the perfuming pipe.
And the rotating gear 22 is connected with a driving motor, and the driving motor drives the rotating gear 22 to rotate, so as to drive the circular disk 11 to rotate, and the rotating direction, the rotating angle and the rotating speed of the circular disk 11 can be adjusted.
Of course, the number of the rotating gears 22 is at least one, and the rotation of the circular disk 11 is more stable.
In a third embodiment, as shown in fig. 4, the invention further provides a use method of the perfuming device for the hollow filter stick tow with dripping fragrance in all the embodiments, which comprises the following steps:
s1: vertically placing the circular disc of the perfuming part at the placing groove of the base;
s2: the tows are passed through the holes of the circular disc and kept conveyed;
s3: the rotating gear drives the circular disc to rotate, so that the pipe orifice of the flavoring pipe rotates to the position above the tows;
s4: essence is added into an essence storage tank behind the perfuming pipe, so that the essence drops onto the conveyed tows from the pipe orifice of the perfuming pipe.
Here, in the step S1, the notch width of the placing groove is smaller than the outer diameter of the circular plate, and at least half of the circular plate is placed in the placing groove, ensuring that the circular plate does not separate from the placing groove.
And controlling the circular disc to rotate by a driving motor connected to the rotation gear while performing step S3.
And when the step S4 is executed, the dripping switch and the dripping speed of essence reaching the nozzle of the perfuming pipe are adjusted through the opening and closing and the opening of the flow limiting valve arranged in the perfuming pipe.
Finally, when various essences need to be added, the waste of mixture of the essence and the stored liquid is avoided, the perfuming pipes 13 can be multiple, the rear end of each perfuming pipe 13 can be provided with essence storage tanks for storing different essences, and the steps S3 to S4 can be repeatedly executed to drop different essences onto the acetate tow respectively.
The fragrance-dropping hollow filter stick tow perfuming device and the using method thereof have the advantages that the structure is simple, the smoking taste of cigarettes is effectively improved, the forming quality of a hollow filter stick is not influenced, essence can be added into hollow filter stick tows, solid essence and liquid essence can be added, and the perfuming amount is controllable.
The present invention is not limited to the specific embodiments described, and various modifications and variations of the present invention are possible. Any modifications, equivalents, improvements and the like made to the above embodiments in accordance with the technical spirit of the present invention should be included in the scope of the present invention.
Claims (9)
1. A drip fragrant type hollow filter stick tow perfuming device is characterized in that: including perfuming portion (1) and being used for supporting base (2) of perfuming portion (1), perfuming portion (1) include circular dish (11), set up in tow clearing hole (12) on circular dish (11) and at least some pass perfuming pipe (13) of circular dish (11), tow clearing hole (12) with circular dish (11) coaxial arrangement, be provided with standing groove (21) on base (2), circular dish (11) have at least some to be located in standing groove (21), perfuming pipe (13) are connected with the essence storage tank, standing groove (21) inside wall is provided with rotating gear (22), be provided with in circular dish (11) the outside be used for with meshing tooth (14) of rotating gear (22) meshing, the quantity of perfuming pipe (13) is one at least for when needing to add multiple essence, will avoid essence stock solution to mix the unrestrained time, each the rear end of perfuming pipe (13) sets up the essence storage tank that has different essences stored, through in proper order with different perfuming pipe (13) rotate to pass through the tow (12) the tow top, drop to the different tow to the fine respectively.
2. The perfuming device of a drip-fragrant hollow filter stick tow according to claim 1, characterized in that: a flow limiting valve is arranged in the flavoring pipe (13).
3. The perfuming device of a drip-fragrant hollow filter stick tow according to claim 1, characterized in that: the width of the notch of the placing groove (21) is smaller than the outer diameter of the circular disc (11), and at least half of the circular disc (11) is positioned in the placing groove (21).
4. The perfuming device of a drip-fragrant hollow filter stick tow according to claim 1, characterized in that: the rotating gear (22) is connected with a driving motor.
5. The perfuming device of a drip-fragrant hollow filter stick tow according to claim 1, characterized in that: the number of the rotating gears (22) is at least one.
6. The use method of the perfuming device of the drip-fragrant hollow filter stick tow according to any one of claims 1 to 5, characterized by comprising the following steps:
s1: vertically placing the circular disc of the perfuming part at the placing groove of the base;
s2: passing and maintaining the tow in transit from the tow passage aperture of the circular disc;
s3: the rotating gear drives the circular disc to rotate, so that the pipe orifice of the flavoring pipe rotates to the position above the tows;
s4: different essences are added into essence storage tanks behind the perfuming pipes, and the perfuming pipes are rotated to the upper side of the acetate fiber tow in sequence, so that the different essences are respectively dropped onto the acetate fiber tow.
7. The use method of a hollow filter rod tow flavoring device according to claim 6, wherein the hollow filter rod tow flavoring device comprises the following steps:
when the step S1 is executed, the width of the notch of the placing groove is smaller than the outer diameter of the circular disc, and at least half of the circular disc is placed in the placing groove, so that the circular disc is prevented from being separated from the placing groove.
8. The use method of the perfuming device for the fragrant dripping type hollow filter stick tows according to claim 6, characterized in that:
in step S3, the circular disc is controlled to rotate by a driving motor connected to the rotary gear.
9. The use method of a hollow filter rod tow flavoring device according to claim 6, wherein the hollow filter rod tow flavoring device comprises the following steps:
and when the step S4 is executed, the dripping switch and the dripping speed of the essence reaching the pipe orifice of the perfuming pipe are adjusted through the opening and closing and the opening of the flow limiting valve arranged in the perfuming pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110178028.4A CN112772970B (en) | 2021-02-09 | 2021-02-09 | Fragrance-dropping hollow filter stick tow perfuming device and using method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110178028.4A CN112772970B (en) | 2021-02-09 | 2021-02-09 | Fragrance-dropping hollow filter stick tow perfuming device and using method |
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| CN112772970B true CN112772970B (en) | 2022-10-25 |
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