CN111374891A - Dry powder coating pan - Google Patents
Dry powder coating pan Download PDFInfo
- Publication number
- CN111374891A CN111374891A CN202010170040.6A CN202010170040A CN111374891A CN 111374891 A CN111374891 A CN 111374891A CN 202010170040 A CN202010170040 A CN 202010170040A CN 111374891 A CN111374891 A CN 111374891A
- Authority
- CN
- China
- Prior art keywords
- dry powder
- powder coating
- coating pan
- pan
- pot
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
- A61J3/00—Devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms
- A61J3/005—Coating of tablets or the like
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
- A61J3/00—Devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms
- A61J3/06—Devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms into the form of pills, lozenges or dragees
Abstract
The invention discloses a dry powder coating pan, which belongs to the technical field of pharmaceutical equipment and comprises a pan body, wherein one side of the pan body is provided with a sleeve, the sleeve is used for connecting the dry powder coating pan with a rotating shaft on the dry powder coating equipment, the wall surface of the pan body is provided with at least one through hole area and at least one closed area, and the through hole area is used for enabling hot air generated by an external blowing device of the dry powder coating pan to enter the dry powder coating pan. The invention not only can effectively reduce the waste of coating materials, but also can be easier to clean after the dry powder coating pan is used while improving the dry powder coating effect.
Description
Technical Field
The invention relates to the technical field of dry powder coating equipment, in particular to a dry powder coating pan.
Background
In recent years, dry powder coating technology has received much attention in the pharmaceutical industry. Compared with the traditional wet coating technology, the dry coating technology abandons the use of organic solvent, and directly leads the coating material to be solidified and formed into a film on the surface of the solid preparation. Therefore, the dry powder coating can greatly shorten the coating time, save the energy consumption, effectively avoid the problems of environmental pollution and the like caused by the discharge of organic solvents.
However, the coating pan used by the existing dry powder coating equipment is still the coating pan of the traditional wet coating equipment, the wall surface of the existing coating pan is mostly in a full-open mesh design, and the design is used in the dry powder coating operation, so that the waste of dry powder coating materials is serious. In the wet coating process, the wall surface of the coating pan with a fully open mesh design can enhance the heat transfer effect, improve the volatilization speed of the organic solvent and shorten the drying time of the tablet core and the curing time of the coating material. However, when the design is used on dry powder coating equipment, a large amount of coating powder is easy to be discharged out of the coating pan through the meshes on the wall surface in a short time under the action of hot air flow and a ventilation system, so that coating materials are wasted.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a dry powder coating pan which can effectively reduce the waste of coating materials and is easier to clean after being used while improving the dry powder coating effect.
In order to achieve the purpose, the invention provides the following technical scheme: the invention provides a dry powder coating pan, which is characterized in that: the dry powder coating pot is characterized by comprising a pot body, wherein a sleeve is arranged on one side of the pot body and used for connecting a dry powder coating pot with a rotating shaft on dry powder coating equipment, at least one through hole area and at least one sealed area are arranged on the wall surface of the pot body, and the through hole area is used for enabling hot air generated by an external blowing device of the dry powder coating pot to enter the dry powder coating pot.
Preferably, the through hole area and the closed area have the same surface area and are arranged at intervals.
Preferably, the through hole region is provided with at least one through hole; the aperture of the through hole is 1-10 mm.
Preferably, the wall surface is made of an easily conductive material, and comprises one or more of metal, inorganic nonmetal and polymer.
Preferably, both sides of the wall surface are of a boss-type design.
Preferably, the inner surface of the boss-shaped side surface is provided with an insulating material layer.
Preferably, the volume resistivity of the easily conductive material is less than 1 x 10-3Ohm cm.
Preferably, the volume resistivity of the insulating-material layer is greater than 1 x 109Ohm cm.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, through the design of partial open pores on the wall surface, hot air required by heating, curing and film-forming of the coating material on the surface of the tablet is taken into consideration, and meanwhile, the amount of coating powder blown out of the coating pan body under the action of hot air flow and an exhaust system can be effectively reduced, so that the aim of saving the coating material is achieved.
Drawings
Fig. 1 and 2 are schematic structural views of the present invention.
Detailed Description
The present invention will now be described in more detail with reference to the accompanying drawings, in which the description of the invention is given by way of illustration and not of limitation. The various embodiments may be combined with each other to form other embodiments not shown in the following description.
In the description of the present invention, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., it indicates that the orientation and positional relationship shown in the drawings are based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated without limiting the specific scope of protection of the present invention.
Furthermore, if the terms "first" and "second" are used for descriptive purposes only, they are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. Thus, a definition of "a first" or "a second" feature may explicitly or implicitly include one or more of the features, and in the description of the invention, "a number" means two or more unless explicitly defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "assembled", "connected", and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; or may be a mechanical connection; the two elements can be directly connected or connected through an intermediate medium, and the two elements can be communicated with each other. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.
As shown in fig. 1 and 2, a dry powder coating pan comprises a pan body 1, a sleeve 2 is arranged on one side of the pan body 1, the sleeve 2 is used for connecting the dry powder coating pan with a rotating shaft on dry powder coating equipment, so that the dry powder coating pan can rotate along with the rotating shaft, at least one through hole area 5 and at least one closed area 6 are arranged on a wall surface 4 of the pan body 1, the through hole area 5 is used for enabling hot air generated by a blowing device in the dry powder coating equipment to enter the dry powder coating pan, and the design of the closed area 6 enables the dry powder coating pan to effectively reduce the amount of coating powder blown out of the coating pan body under the action of hot air flow and an exhaust system while the hot air required by heating, curing and film forming of coating materials on the surfaces of tablets is considered, so that the purpose of saving the coating materials.
In order to ensure the heating and drying effect of the tablets in the dry powder coating pan, the tablets receive uniform hot air, and the surface areas of the through hole area 5 and the closed area 6 are the same and are arranged at intervals.
At least one through hole 501 is arranged in the through hole area 5, and in order to prevent the tablets from falling from the through hole 501 in the rotation process of the dry powder coating pan, the aperture of the through hole 501 is set to be 1-10 mm.
The wall surface 4 of the dry powder coating pan is made of an easily conductive material, and comprises one or more of metal, inorganic nonmetal and polymer, and the wall surface 4 is made of the easily conductive material, so that on one hand, the dry powder coating pan is grounded, so that a potential difference is generated between the interior of the pan body and the electrostatic spray gun, and the dry powder coating pan can be used for electrostatic powder coating; on the other hand, the wall 4 is located at the bottom of the tablet bed during operation, which induces the electrostatically charged powder to move towards the area of the tablet bed, reducing coating material waste and improving the coating effect.
In order to solve the problem, the two side surfaces 3 of the wall surface 4 of the dry powder coating pan are designed to be boss-shaped, so that the tablets on the wall surface 4 can actively roll towards the center of a tablet bed in the lifting process, and further the radial mixing effect and the tablet coating uniformity of the tablets in the dry powder coating pan are enhanced.
The inner surface of the boss-shaped side surface 3 is provided with an insulating material layer. Because the surface resistance of the tablet to be coated is large and the metal resistance is small, the design of the insulating material layer effectively reduces the adsorption and deposition of negatively charged powder particles generated in the dry powder coating process on the inner wall surface of the coating pot under the action of the electrostatic field force, so that the electrostatic powder can be adsorbed on the surface of the tablet which is not easy to conduct electricity, and the waste of coating materials is avoided. Meanwhile, in the coating process, the boss type side surface 3 with high resistance can induce the electrostatic powder to move to the surface of the tablet, so that the coating effect is improved. The pan coater after use also cleans better because of reduced powder build-up on the metal inner surface.
In order to further improve the coating effect of the dry powder coating pan, the volume resistivity is selected to be less than 1 x 10-3Ohm cm easy conductive material is used as wall 4, volume resistivity is larger than 1 x 109Ohm-cm material is used as the insulating material layer.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (8)
1. A dry powder coating pan is characterized in that: the dry powder coating pot is characterized by comprising a pot body, wherein a sleeve is arranged on one side of the pot body and used for connecting a dry powder coating pot with a rotating shaft on dry powder coating equipment, at least one through hole area and at least one sealed area are arranged on the wall surface of the pot body, and the through hole area is used for enabling hot air generated by an external blowing device of the dry powder coating pot to enter the dry powder coating pot.
2. A dry powder coating pan as claimed in claim 1, wherein: the surface areas of the through hole area and the closed area are the same and are arranged at intervals.
3. A dry powder coating pan as claimed in claim 2, wherein: the through hole area is provided with at least one through hole; the aperture of the through hole is 1-10 mm.
4. A dry powder coating pan as claimed in claim 1, wherein: the wall surface is made of easily conductive materials and comprises one or more of metal, inorganic nonmetal and polymer.
5. A dry powder coating pan according to claim 4, wherein: two side surfaces of the wall surface are in boss type design.
6. A dry powder coating pan as claimed in claim 5, wherein: and the inner surface of the side surface of the boss is provided with an insulating material layer.
7. A dry powder coating pan according to claim 4, wherein: the volume resistivity of the easily conductive material is less than 1 x 10-3Ohm cm.
8. A dry powder coating pan as claimed in claim 6, wherein: the volume resistivity of the insulating material layer is more than 1 x 109Ohm cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010170040.6A CN111374891A (en) | 2020-03-12 | 2020-03-12 | Dry powder coating pan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010170040.6A CN111374891A (en) | 2020-03-12 | 2020-03-12 | Dry powder coating pan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111374891A true CN111374891A (en) | 2020-07-07 |
Family
ID=71215515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010170040.6A Pending CN111374891A (en) | 2020-03-12 | 2020-03-12 | Dry powder coating pan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111374891A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1075404A (en) * | 1963-06-19 | 1967-07-12 | Tanabe Seiyaku Co | Electrostatic tablet coating apparatus |
| US3357398A (en) * | 1962-09-28 | 1967-12-12 | Abbott Lab | Method and apparatus for coating tablets |
| GB1355828A (en) * | 1970-12-29 | 1974-06-05 | Takeda Chemical Industries Ltd | Apparatus for coating granular materials and a process therefor |
| CN101237846A (en) * | 2005-08-03 | 2008-08-06 | 西安大略大学 | Direct coating solid dosage forms using powdered materials |
| CN101766537A (en) * | 2010-02-26 | 2010-07-07 | 罗彦凤 | Dry-method coating machine |
| CN104173194A (en) * | 2013-05-28 | 2014-12-03 | 四川好医生药业集团有限公司 | Coating pot of dry coating machine |
| CN108926484A (en) * | 2018-07-27 | 2018-12-04 | 宁波西敦医药包衣科技有限公司 | Dry powder seed-coating machine |
| CN208355775U (en) * | 2017-09-08 | 2019-01-11 | 安徽康缘药业有限公司 | A kind of ganoderma spove powder electrostatic dry method coating device |
| CN208785305U (en) * | 2018-04-03 | 2019-04-26 | 好得康（北京）保健食品有限公司 | Seed-coating machine |
-
2020
- 2020-03-12 CN CN202010170040.6A patent/CN111374891A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3357398A (en) * | 1962-09-28 | 1967-12-12 | Abbott Lab | Method and apparatus for coating tablets |
| GB1075404A (en) * | 1963-06-19 | 1967-07-12 | Tanabe Seiyaku Co | Electrostatic tablet coating apparatus |
| GB1355828A (en) * | 1970-12-29 | 1974-06-05 | Takeda Chemical Industries Ltd | Apparatus for coating granular materials and a process therefor |
| CN101237846A (en) * | 2005-08-03 | 2008-08-06 | 西安大略大学 | Direct coating solid dosage forms using powdered materials |
| CN101766537A (en) * | 2010-02-26 | 2010-07-07 | 罗彦凤 | Dry-method coating machine |
| CN104173194A (en) * | 2013-05-28 | 2014-12-03 | 四川好医生药业集团有限公司 | Coating pot of dry coating machine |
| CN208355775U (en) * | 2017-09-08 | 2019-01-11 | 安徽康缘药业有限公司 | A kind of ganoderma spove powder electrostatic dry method coating device |
| CN208785305U (en) * | 2018-04-03 | 2019-04-26 | 好得康（北京）保健食品有限公司 | Seed-coating machine |
| CN108926484A (en) * | 2018-07-27 | 2018-12-04 | 宁波西敦医药包衣科技有限公司 | Dry powder seed-coating machine |
Non-Patent Citations (2)
| Title |
|---|
| 张寿山: "《制药厂生产车间新技术新工艺流程与操作技能应用、质量控制设备运行维护实用全书 第4册》", 31 October 2005, 中国医药科技电子出版社 * |
| 王沛: "《中药制药设备》", 31 August 2006, 中国中医药出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20220062946A1 (en) | Dry powder coating apparatus | |
| CN103165858B (en) | The manufacture method of electrode | |
| CN102166511B (en) | Corrosion-resistant hygroscopic coat and preparation method thereof | |
| CN104091910B (en) | A kind of preparation method of ceramic modified lithium ion battery separator | |
| CN107093694A (en) | A kind of aqueous PVDF coating lithium ions battery diaphragm and preparation method thereof | |
| SE514600C2 (en) | Method for manufacturing nanostructured thin film electrodes | |
| CN101341561A (en) | Electric double layer capacitor | |
| CN102653003B (en) | Method for forming porous metal layer on pipe wall of heat exchange pipe | |
| CN102235803A (en) | Method of drying a honeycomb formed body | |
| CN115624912B (en) | Shoveling plate type stirring, cladding and granulating equipment | |
| CN111374891A (en) | Dry powder coating pan | |
| CN206778740U (en) | A kind of steel pipe electrostatic coating machine | |
| CN103993316B (en) | Enamel heat transfer element and enameling method thereof | |
| EP3315213B1 (en) | Component used in air conditioner and air conditioner having same | |
| CN109003703A (en) | A kind of single side transfer-type graphene film structure and preparation method thereof | |
| WO2012161161A1 (en) | Film forming method, body having film formed thereon, and dye-sensitized solar cell | |
| CN109119184A (en) | A kind of double spread formula conductive film and preparation method thereof | |
| CN108428766A (en) | The crystal silicon battery and preparation method thereof of anti-edge current leakage | |
| CN109147990A (en) | A kind of single side jet printing type conductive film and preparation method thereof | |
| CN109771976A (en) | A kind of cold and hot multi-stage alternate drying tower and drying means | |
| CN206176963U (en) | Vacuum freezing desiccator heat exchanger plate | |
| US3513810A (en) | Formation of coatings | |
| WO2021077445A1 (en) | Manufacturing process for enamel container and enamel container | |
| CN207786535U (en) | A kind of fluidized bed coating process units | |
| TW200304904A (en) | Paste for forming barrier rib |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200707 |