CN220664203U - Airtight feeding system of superfine powder - Google Patents
Airtight feeding system of superfine powder Download PDFInfo
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- CN220664203U CN220664203U CN202322305894.2U CN202322305894U CN220664203U CN 220664203 U CN220664203 U CN 220664203U CN 202322305894 U CN202322305894 U CN 202322305894U CN 220664203 U CN220664203 U CN 220664203U
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- 239000000843 powder Substances 0.000 title claims abstract description 115
- 238000003860 storage Methods 0.000 claims abstract description 56
- 238000003756 stirring Methods 0.000 claims abstract description 54
- 230000001804 emulsifying effect Effects 0.000 claims abstract description 51
- 230000007246 mechanism Effects 0.000 claims abstract description 17
- 238000007789 sealing Methods 0.000 claims abstract description 12
- 238000004945 emulsification Methods 0.000 claims abstract description 11
- 238000007599 discharging Methods 0.000 claims abstract description 10
- 238000004140 cleaning Methods 0.000 claims description 24
- 239000007921 spray Substances 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 7
- 230000000007 visual effect Effects 0.000 claims description 4
- 239000003566 sealing material Substances 0.000 claims 1
- 239000006185 dispersion Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 239000000463 material Substances 0.000 description 13
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 239000003814 drug Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 229940079593 drug Drugs 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 229940088597 hormone Drugs 0.000 description 2
- 239000005556 hormone Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000012864 cross contamination Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000002612 dispersion medium Substances 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
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Abstract
The utility model discloses an airtight feeding system for ultrafine powder, which comprises an emulsifying tank and a powder storage tank, wherein a feeding port is formed in the side wall of the emulsifying tank, a discharging port is formed in the bottom of the powder storage tank, a stirring mechanism and a negative pressure suction pipe are arranged on the emulsifying tank, the negative pressure suction pipe is communicated with the interior of the emulsifying tank, and a sealing feeding valve and a respirator are fixedly arranged at the top of the powder storage tank. The utility model takes atmospheric pressure as driving force, adopts the feeding from the side surface of the emulsifying tank, and can solve the problems of dispersion, wall hanging and powder eruption of superfine powder. Through the side feeding from the emulsification tank, can improve stirring mixing effect, also can control the vacuum negative pressure in the emulsification tank and reach suitable value, avoid the powder eruption and the wall built-up that the unsuitable pressure leads to, can make simultaneously that ultra-fine powder adds slowly and continuity.
Description
Technical Field
The utility model relates to the technical field of medicine production, in particular to a closed feeding system for ultrafine powder.
Background
According to pharmaceutical regulations and occupational protection requirements, effective airtight control measures are needed to be adopted when hormone and high-activity medicines are produced, so that the cross contamination of medicines, environmental pollution and the injury of occupational health of personnel caused by the diffusion of active ingredients are avoided.
The closed feeding production is an effective control measure which is proved, but the closed control of the ultra-fine powder is more difficult than the conventional powder and liquid, so that the closed feeding is satisfied, and the process requirements of slow continuity, feeding and mixing during the production of medicines, powder spraying, wall hanging, dispersion and the like are satisfied.
In view of this, the present patent application is presented.
Disclosure of Invention
The utility model aims to provide an airtight feeding system for ultrafine powder, which can slowly and continuously feed, and solves the problems of powder eruption, wall hanging and dispersion.
The utility model is realized by the following technical scheme:
the utility model aims to provide an airtight feeding system for ultrafine powder, which comprises an emulsifying tank and a powder storage tank, wherein a feeding hole is formed in the side wall of the emulsifying tank, a discharging hole is formed in the bottom of the powder storage tank, a stirring mechanism and a negative pressure suction pipe are arranged on the emulsifying tank, the negative pressure suction pipe is communicated with the interior of the emulsifying tank, and a sealing feeding valve and a respirator are fixedly arranged at the top of the powder storage tank.
In an alternative embodiment, a feeding pipeline is connected between the feeding port of the emulsifying tank and the discharging port of the powder storage tank, and valves are arranged at the feeding port of the emulsifying tank and the discharging port of the powder storage tank.
In an alternative embodiment, the stirring mechanism comprises a stirring motor, a stirring shaft and stirring blades, wherein the stirring motor is fixed outside the emulsifying tank, the stirring shaft is connected with a power output shaft of the stirring motor, and the stirring blades are fixed on the stirring shaft.
In an alternative embodiment, the feed port of the emulsifying tank is arranged corresponding to the lower end of the stirring shaft.
In an optional embodiment, the negative pressure suction pipe and the feeding port are respectively arranged on two side walls of the emulsifying tank, the height of the negative pressure suction pipe is higher than that of the feeding port, and the negative pressure suction pipe is arranged corresponding to the upper end of the stirring shaft.
In an alternative embodiment, the seal feed valve is an αβ valve.
In an alternative embodiment, the lower part of the powder storage tank is a pyramid-shaped cylinder, the lower part of the powder storage tank is provided with a pneumatic vibrator, and the lower part of the powder storage tank is also provided with a visual window.
In an alternative embodiment, a star-shaped feeding valve is arranged on the feeding pipeline.
In an alternative embodiment, the respirator is internally provided with a filter element.
In an optional embodiment, the powder storage tank is further provided with a cleaning mechanism, the cleaning mechanism comprises a liquid inlet pipe, a manual butterfly valve, a cleaning pipe and a cleaning spray head, the manual butterfly valve is fixedly connected between the liquid inlet pipe and the cleaning pipe, the cleaning spray head is fixed at the end part of the cleaning pipe, and the cleaning spray head is positioned in the powder storage tank;
the powder storage tank is also fixedly provided with a support frame, and the bottom of the support frame is fixedly provided with a self-locking universal wheel.
Compared with the prior art, the utility model has the advantages that:
(1) According to the airtight feeding system for the ultrafine powder, provided by the embodiment of the utility model, the air pressure is used as a driving force, the side feeding of the emulsifying tank is adopted, the dispersion and wall hanging of the ultrafine powder during feeding from the top can be avoided, the condition that the ultrafine powder is not easy to enter during feeding from the bottom and the powder erupts easily due to the fact that larger negative pressure is needed during feeding from the bottom. Through the side feeding from the emulsification tank, can improve stirring mixing effect, also can control the vacuum negative pressure in the emulsification tank and reach suitable value, avoid the powder eruption and the wall built-up that the unsuitable pressure leads to, can make simultaneously that ultra-fine powder adds slowly and continuity.
(2) According to the airtight feeding system for the ultrafine powder, provided by the embodiment of the utility model, the feeding port of the emulsifying tank is arranged close to the lower end of the stirring shaft, the feeding port is closer to the stirring blade, and the ultrafine powder can be taken away by the stirring blade to be mixed with other materials when entering from the feeding port, so that the mixing effect is better.
(3) According to the airtight feeding system for the ultrafine powder, the negative pressure suction pipe and the feeding port are respectively arranged on the two side walls of the emulsifying tank, and meanwhile, the height of the negative pressure suction pipe is higher than that of the feeding port, so that the negative pressure suction pipe and the feeding port are oppositely arranged, and the suction pressure can be smoother; the negative pressure suction pipe is arranged corresponding to the upper end of the stirring shaft, so that gas in the emulsifying tank is sucked more fully.
(4) According to the airtight feeding system for the ultrafine powder, provided by the embodiment of the utility model, the lower part of the powder storage tank is a pyramid-shaped cylinder, and meanwhile, the pneumatic vibrator is arranged at the lower part of the powder storage tank to play a role in flow assistance, so that the problem that continuous powder cannot be conveyed into an emulsifying tank due to the formation of gaps, cavities and the like in the ultrafine powder is avoided, and the production efficiency and the product quality are influenced.
(5) The embodiment of the utility model provides an airtight feeding system for ultrafine powder, wherein a star-shaped feeding valve is further arranged on a feeding pipeline and can be used for adjusting feeding speed so as to realize slow and stable feeding.
Drawings
In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present utility model, the drawings that are needed in the examples will be briefly described below, it being understood that the following drawings only illustrate some examples of the present utility model and therefore should not be considered as limiting the scope, and that other related drawings may be obtained from these drawings without inventive effort for a person skilled in the art. In the drawings:
FIG. 1 is a schematic structural diagram of a closed feeding system for ultra-fine powder according to an embodiment of the present utility model;
fig. 2 is a schematic structural diagram of an emulsifying tank according to an embodiment of the present utility model;
FIG. 3 is a schematic view of a powder storage tank according to an embodiment of the present utility model;
in the drawings, the reference numerals and corresponding part names:
1-emulsifying tank, 101-feed inlet, 2-powder storage tank, 201-discharge outlet, 3-stirring mechanism, 301-stirring motor, 302-stirring shaft, 303-stirring blade, 4-negative pressure suction pipe, 5-sealing feed valve, 6-respirator, 7-feed pipeline, 8-valve, 9-pneumatic vibrator, 11-visual window, 12-star-shaped feed valve, 13-cleaning mechanism, 1301-feed pipe, 1302-manual butterfly valve, 1303-cleaning pipe, 1304-cleaning nozzle, 14-support frame and 15-universal wheel.
Detailed Description
For the purpose of making apparent the objects, technical solutions and advantages of the present utility model, the present utility model will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present utility model and the descriptions thereof are for illustrating the present utility model only and are not to be construed as limiting the present utility model.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. However, it will be apparent to one of ordinary skill in the art that: no such specific details are necessary to practice the utility model. In other instances, well-known structures, circuits, materials, or methods have not been described in detail in order not to obscure the utility model.
Throughout the specification, references to "one embodiment," "an embodiment," "one example," or "an example" mean: a particular feature, structure, or characteristic described in connection with the embodiment or example is included within at least one embodiment of the utility model. Thus, the appearances of the phrases "in one embodiment," "in an example," or "in an example" in various places throughout this specification are not necessarily all referring to the same embodiment or example. Furthermore, the particular features, structures, or characteristics may be combined in any suitable combination and/or sub-combination in one or more embodiments or examples. Moreover, those of ordinary skill in the art will appreciate that the illustrations provided herein are for illustrative purposes and that the illustrations are not necessarily drawn to scale. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
In the description of the present utility model, the terms "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "high", "low", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the scope of the present utility model.
Example 1: as shown in fig. 1 to 3, a closed feeding system for ultra-fine powder, comprising:
the emulsifying tank 1 is used for containing various materials and stirring the materials to form stable emulsion, the side wall of the emulsifying tank 1 is provided with a feeding opening 101, ultra-fine powder enters the emulsifying tank 1 through the feeding opening 101, the emulsifying tank 1 is provided with a stirring mechanism 3 and a negative pressure suction pipe 4, the stirring mechanism 3 is used for fully stirring and mixing the materials in the emulsifying tank 1, the negative pressure suction pipe 4 is communicated with the inside of the emulsifying tank 1, the negative pressure suction pipe 4 can be connected with a negative pressure pump for sucking the materials in the emulsifying tank 1, and thus the emulsifying tank has a vacuum negative pressure function.
The powder storage tank 2 is used for storing superfine powder for drug production, a discharge hole 201 is formed in the bottom of the powder storage tank 2, a feed inlet is further formed in the top of the powder storage tank 2, a sealing feeding valve 5 is fixedly connected to the feed inlet of the powder storage tank 2, and superfine powder in the previous process is transferred into the powder storage tank 2 in a sealing manner through the sealing feeding valve 5, so that sealing pollution-free feeding is realized; the sealing loading valve 5 is in a closed state when not transferring. A breather 6 is fixedly arranged at the top of the powder storage tank 2 and used for balancing the air pressure inside and outside the powder storage tank 2 so that the ultrafine powder smoothly falls. The respirator 6 may be a 5 inch model respirator 6 manufactured by cobber.
And one end of the feeding pipeline 7 is fixedly and hermetically connected with the feeding port 101 of the emulsifying tank 1, the other end of the feeding pipeline 7 is fixedly and hermetically connected with the discharging port 201 of the powder storage tank 2, and the feeding pipeline 7 is provided with valves 8 at the feeding port 101 of the emulsifying tank 1 and the discharging port 201 of the powder storage tank 2. The feeding pipeline 7 is not required to be arranged, and the feeding port 101 of the emulsifying tank 1 is directly in butt joint with the discharging port 201 of the powder storage tank 2.
In this embodiment, the air pressure is used as the driving force, and the air is fed from the side of the emulsifying tank 1, so that dispersion and wall hanging of the ultrafine powder during feeding from the top can be avoided, the ultrafine powder during feeding from the bottom is not easy to enter, and the conditions that a large negative pressure is needed during feeding from the bottom but the powder is easy to spray are avoided. Through the side feeding from the emulsification tank 1, the ultra-fine powder can be quickly taken away by the blades of the stirring mechanism 3 to be stirred and mixed after being added, the vacuum negative pressure in the emulsification tank 1 can be controlled to reach a proper value, powder eruption and wall hanging caused by improper pressure are avoided, and meanwhile, the ultra-fine powder can be slowly and continuously added by controlling proper negative pressure. The sealing feeding valve 5 can ensure airtight transfer of the ultrafine powder. Thereby providing a slow and continuous airtight feeding system.
Further, the stirring mechanism 3 comprises a stirring motor 301, a stirring shaft 302 and stirring blades 303, the stirring motor 301 is fixedly arranged outside the emulsifying tank 1, the stirring shaft 302 is connected with a power output shaft of the stirring motor 301, and the stirring blades 303 are fixed on the stirring shaft 302.
Further, the feed port 101 of the emulsifying tank 1 is arranged corresponding to the lower end of the stirring shaft 302, that is, the feed port 101 of the emulsifying tank 1 is arranged close to the lower end of the stirring shaft 302, so that the feed port 101 is closer to the stirring blade 303, and when the ultra-fine powder enters from the feed port 101, the ultra-fine powder can be taken away by the stirring blade 303 and mixed with other materials, so that the mixing effect is better.
Further, the negative pressure suction pipe 4 and the feeding port 101 are respectively arranged on two side walls of the emulsifying tank 1, and meanwhile, the height of the negative pressure suction pipe 4 is higher than that of the feeding port 101, so that the negative pressure suction pipe 4 and the feeding port 101 are arranged oppositely, and the suction pressure can be smoother; the negative pressure suction pipe 4 is provided corresponding to the upper end of the stirring shaft 302, and the suction of the gas in the emulsification tank 1 is more sufficient.
Furthermore, the sealing feeding valve 5 is an alpha beta valve, such as an alpha beta valve of ASBV-PSDN100 model produced by Alfa technology, so that the whole-course airtight and aseptic conveying of the superfine powder to the powder storage tank 2 is realized.
Example 2:
based on the embodiment 1, the lower part of the powder storage tank 2 is a pyramid-shaped cylinder body, and compared with a cylindrical cylinder body, the powder storage tank can provide larger surface area to share the pressure of upper materials to the cone tip, prevent the cone tip materials from being overtightened and enable superfine powder to more smoothly fall in the powder storage tank 2; meanwhile, the pneumatic vibrator 9 is arranged at the lower part of the powder storage tank 2, and the pneumatic vibrator 9 is started during production, so that the powder storage tank 2 vibrates to play a role in flow assistance, and continuous powder cannot be conveyed into the emulsifying tank 1 due to the fact that gaps, cavities and the like are formed in ultrafine powder, and production efficiency and product quality are affected. The feeding is slowly, continuously and controllably realized through the synergistic effect of the pyramid-shaped cylinder body and the pneumatic vibrator.
Further, the lower part of the powder storage tank 2 is also provided with a visual window 11, and the visual window 11 can be made of transparent glass, so that the condition in the powder storage tank 2 can be observed conveniently.
Further, a star-shaped feeding valve 12 is further arranged on the feeding pipeline 7, the star-shaped feeding valve 12 can be a star-shaped valve of the model 4 '3' manufactured by Ormi manufacturers, and the star-shaped feeding valve 12 can be used for adjusting the feeding speed so as to realize slow and stable feeding.
Further, a filter element is fixedly arranged inside the respirator 6.
Still further, still be equipped with wiper mechanism 13 on powder storage tank 2, wherein wiper mechanism 13 includes feed liquor pipe 1301, manual butterfly valve 1302, washpipe 1303, washs shower nozzle 1304, and manual butterfly valve 1302 fixed connection is between feed liquor pipe 1301 and washpipe 1303, washs shower nozzle 1304 fixed mounting at the tip of washpipe 1303, washs shower nozzle 1304 and is located the inside of powder storage tank 2. The cleaning liquid enters the cleaning pipe 1303 through the liquid inlet pipe 1301 and the manual butterfly valve 1302, and is sprayed into the powder storage tank 2 through the cleaning spray nozzle 1304. The amount of cleaning fluid entering the powder storage tank 2 can be regulated by the manual butterfly valve 1302, so that on-line wetting or cleaning is realized.
The powder storage tank 2 is also fixedly provided with two supporting frames 14, the two supporting frames 14 can be made of steel materials, the bottom of the supporting frame 14 is fixedly provided with self-locking universal wheels 15, and the powder storage tank 2 can be conveniently moved and can be self-locked and fixed.
When in use, the superfine active powder is added into the movable powder storage tank 2 through the alpha beta valve, and then the feeding pipeline 7 provided with the star-shaped feeding valve 12 is used for connecting the bottom sealing discharge port 201 of the powder storage tank 2 with the feeding port 101 on the side surface of the emulsifying tank 1. The emulsifying tank 1 is filled with a dispersion medium which is at least 10cm away from the side feeding opening 101, after the emulsifying tank 1 is pumped to negative pressure, the valve 8 and the star-shaped feeding valve 12 corresponding to the feeding opening 101 and the discharging opening 201 are opened, the material in the powder storage tank 2 is pushed into the emulsifying tank 1 by atmospheric pressure, the material is timely dispersed by matching with stirring in the emulsifying tank 1, meanwhile, the star-shaped feeding valve 12 controls the feeding speed, and the vibrator helps flow. The system adopts side feeding, reduces material ejection and wall hanging residues while meeting the process requirements, and ensures the production quality. The closed and airtight feeding system is successfully applied to certain hormone medicine powder (D90 is smaller than 20 mu m), the feeding process is slow and stable, ejection is avoided, the feeding is finished by about 200g of residual powder, and the process requirement is completely met.
In addition, the valve 8, the star-shaped feeding valve 12, the αβ valve and the pneumatic vibrator 9 in this embodiment may be controlled by a controller, and the structure and control method of the specific controller and the connection structure between the valve and the pneumatic vibrator 9 may be implemented by using the existing technologies, which are not described herein. The non-involved parts of the emulsifying tank 1 in this embodiment may all adopt the structure of the existing emulsifying tank 1, and the non-involved parts are not described here again, and the existing emulsifying tank 1 may adopt the model TFZRJ-200L-Q emulsifying tank 1 manufactured by zhejiang Tianfu technology limited company.
The foregoing detailed description of the utility model has been presented for purposes of illustration and description, and it should be understood that the utility model is not limited to the particular embodiments disclosed, but is intended to cover all modifications, equivalents, alternatives, and improvements within the spirit and principles of the utility model.
Claims (10)
1. The utility model provides a airtight feeding system of superfine powder, its characterized in that, including emulsification jar (1), powder storage tank (2), feed inlet (101) have been seted up on the lateral wall to emulsification jar (1), the bottom of powder storage tank (2) is equipped with discharge gate (201), be equipped with rabbling mechanism (3) and negative pressure suction tube (4) on emulsification jar (1), negative pressure suction tube (4) intercommunication emulsification jar (1) are inside, the fixed sealing material loading valve (5) and respirator (6) that are equipped with in top of powder storage tank (2).
2. The airtight feeding system of ultrafine powder according to claim 1, wherein a feeding pipeline (7) is connected between a feeding port (101) of the emulsifying tank (1) and a discharging port (201) of the powder storage tank (2), and valves (8) are arranged on the feeding port (101) of the emulsifying tank (1) and the discharging port (201) of the powder storage tank (2) in the feeding pipeline (7).
3. The airtight feeding system of ultrafine powder according to claim 2, wherein the stirring mechanism (3) comprises a stirring motor (301), a stirring shaft (302) and stirring blades (303), the stirring motor (301) is fixed outside the emulsifying tank (1), the stirring shaft (302) is connected with a power output shaft of the stirring motor (301), and the stirring blades (303) are fixed on the stirring shaft (302).
4. A closed feeding system for ultra-fine powder according to claim 3, wherein the feeding opening (101) of the emulsifying tank (1) is arranged corresponding to the lower end of the stirring shaft (302).
5. The airtight feeding system for ultra-fine powder according to claim 4, wherein the negative pressure suction pipe (4) and the feeding port (101) are respectively arranged on two side walls of the emulsifying tank (1), the height of the negative pressure suction pipe (4) is higher than that of the feeding port (101), and the negative pressure suction pipe (4) is arranged corresponding to the upper end of the stirring shaft (302).
6. The closed feeding system for ultra-fine powder according to any one of claims 2 to 5, wherein the sealing feeding valve (5) is an αβ valve.
7. The airtight feeding system of ultrafine powder according to claim 6, wherein the lower part of the powder storage tank (2) is a pyramid-shaped cylinder, the lower part of the powder storage tank (2) is provided with a pneumatic vibrator (9), and the lower part of the powder storage tank (2) is also provided with a visual window (11).
8. The closed feeding system for ultra-fine powder according to claim 7, wherein the feeding pipeline (7) is provided with a star-shaped feeding valve (12).
9. The closed feeding system for ultrafine powder according to claim 7 or 8, wherein the filter element is fixedly arranged inside the respirator (6).
10. The airtight feeding system of ultrafine powder according to claim 9, wherein a cleaning mechanism (13) is further arranged on the powder storage tank (2), the cleaning mechanism (13) comprises a liquid inlet pipe (1301), a manual butterfly valve (1302), a cleaning pipe (1303) and a cleaning spray head (1304), the manual butterfly valve (1302) is fixedly connected between the liquid inlet pipe (1301) and the cleaning pipe (1303), the cleaning spray head (1304) is fixed at the end part of the cleaning pipe (1303), and the cleaning spray head (1304) is positioned inside the powder storage tank (2);
the powder storage tank (2) is also fixedly provided with a support frame (14), and the bottom of the support frame (14) is fixedly provided with a self-locking universal wheel (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322305894.2U CN220664203U (en) | 2023-08-25 | 2023-08-25 | Airtight feeding system of superfine powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322305894.2U CN220664203U (en) | 2023-08-25 | 2023-08-25 | Airtight feeding system of superfine powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220664203U true CN220664203U (en) | 2024-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322305894.2U Active CN220664203U (en) | 2023-08-25 | 2023-08-25 | Airtight feeding system of superfine powder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220664203U (en) |
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2023
- 2023-08-25 CN CN202322305894.2U patent/CN220664203U/en active Active
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