CN107999244B - Foil paper crushing screening device - Google Patents
Foil paper crushing screening device Download PDFInfo
- Publication number
- CN107999244B CN107999244B CN201810057881.9A CN201810057881A CN107999244B CN 107999244 B CN107999244 B CN 107999244B CN 201810057881 A CN201810057881 A CN 201810057881A CN 107999244 B CN107999244 B CN 107999244B
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- grinding
- wall
- storage barrel
- sealing cover
- barrel
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C19/00—Other disintegrating devices or methods
- B02C19/0056—Other disintegrating devices or methods specially adapted for specific materials not otherwise provided for
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/16—Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/16—Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
- B02C2023/165—Screen denying egress of oversize material
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/64—Paper recycling
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Closures For Containers (AREA)
Abstract
The invention relates to a foil paper crushing and screening device which comprises a storage barrel (1), a grinding screen (2), a grinding cone (3), a sealing cover (4) and a pressure spring (5), wherein an outer clamping edge (21) of the grinding screen (2) is clamped above a barrel opening of the storage barrel (1), an inverted cone-shaped body part is positioned in the storage barrel (1), the outer wall of the inverted cone-shaped part of the grinding cone (3) is matched with the inner wall of the grinding screen (2), the cover opening of the sealing cover (4) covers the outer clamping edge (22) of the grinding cone and the grinding screen downwards and is fixed on the barrel opening of the storage barrel, the top of the grinding cone is connected with a crank (6) with a crank handle positioned above the sealing cover, the pressure spring (5) is sleeved on a crank rod (62) between the top surface of the grinding cone and the lower surface of the top wall of the sealing cover, a paper taking suction opening is arranged on the side wall of the lower part of the storage barrel, and an elastic rubber plug (11) is arranged on the paper taking suction opening. The use of the paper-made paint is easy to crush the foil paper, the use of the crushed foil paper is convenient, the waste is avoided, and the health of paint painting manufacturers is not endangered.
Description
Technical Field
The invention relates to an art tool, in particular to a pulverizer for pulverizing foil paper for making lacquer paintings.
Background
When painting workers make paint, a special effect is achieved by adopting a mode of 'gold scattering' or 'silver scattering', and the 'gold' and the 'silver' which are scattered are crushed into powder gold foil and silver foil. At present, though the crushed bagged gold foil and silver foil are sold, the crushed gold foil and silver foil are very light in weight and easy to generate static electricity, are very inconvenient to take and easy to naturally fly, can be adsorbed on human bodies and other objects, can be sucked into the nose even by people, and seriously affect the body health of manufacturers. The actual usage amount of broken gold foil and silver foil is small, the taking and cleaning are troublesome, waste is easy to generate, and the situation seriously affects the manufacturing efficiency and the working enthusiasm of paint picture manufacturers, so that the problem needs to be solved. Although some paint drawing manufacturers can crush a small amount of gold foil and silver foil to obtain a small amount of crushed gold foil and crushed silver foil, the paint drawing manufacturers have the defects of inconvenient taking and cleaning and easy environmental pollution, the operation is troublesome, and the crushing effect is not easy to meet the requirements.
Disclosure of Invention
The invention aims to provide the foil paper crushing and screening device which is easy to crush foil paper, convenient to take and use, free from waste and harmless to the health of paint painting manufacturers.
The technical scheme of the invention is as follows: the grinding sieve comprises a storage barrel, a grinding sieve, a grinding cone, a sealing cover and a pressure spring, wherein the storage barrel is a closed bottle-shaped body with a barrel opening at the upper part, the grinding sieve is an upward open hollow inverted cone-shaped body with an inverted cone-shaped inner wall with a thick upper part and a thin lower part, the periphery of the upper opening of the grinding sieve is provided with an outer clamping edge matched with the barrel opening of the storage barrel, the side wall of the grinding sieve is provided with a plurality of grinding sieve paper through holes communicated with the inside and the outside of the grinding sieve, the upper part of the grinding cone is a cylindrical shape with the outer wall matched with the inner wall of the sealing cover, the cylindrical lower part is an inverted cone with the shape of the outer wall consistent with the shape of the inner wall of the grinding sieve, the sealing cover is an inverted cup-shaped body with the cylindrical inner wall with the opening facing downwards, the outer clamping edge of the grinding sieve is clamped above the barrel opening of the storage barrel and the inverted cone-shaped body part below the outer clamping edge is positioned in the storage barrel, the inverted cone part of the grinding cone is sleeved in the grinding sieve from top to bottom, the outer wall of the grinding cone is matched with the inner wall of the grinding sieve, the mouth end of the sealing cover covers the grinding cone and the outer clamping edge of the grinding sieve downwards, the mouth of the sealing cover is fixed on the barrel mouth of the storage barrel, the outer wall of the cylindrical section above the inverted cone of the grinding cone is in up-down sliding fit with the cylindrical inner wall of the sealing cover, the top of the grinding cone is connected with the crank above the sealing cover, the crank rod below the crank rod passes through the central hole on the top wall of the sealing cover from top to bottom and is in sliding fit with the central hole, the lower end part of the crank rod is fixedly connected with the central position of the top of the grinding cone, the pressure spring is sleeved on the crank rod between the top surface of the grinding cone and the lower surface of the top wall of the sealing cover, the outer wall of the inverted cone part of the grinding cone is in tight press fit with the inner wall of the grinding sieve, the paper taking suction opening is arranged on the side wall of the lower part of the storage barrel, the paper taking suction opening is provided with an elastic rubber plug, the elastic rubber plug is provided with an elastic self-closing hole communicated with the inside and the outside of the storage barrel.
The invention has the technical effects that: the use of the paper-made paint is easy to crush the foil paper, the use of the crushed foil paper is convenient, the waste is avoided, and the health of paint painting manufacturers is not endangered. The paper-foil machine has the advantages of simple structure, low manufacturing cost, convenient operation and use, convenient self-crushing of the foil paper by paint drawing manufacturers, and direct collection and storage of the crushed foil paper for application. The method is easier to use the broken foil paper, can not cause the broken foil paper to be scattered and adsorbed on a human body or other objects at will, avoids the trouble of cleaning the broken foil paper, greatly improves the paint drawing manufacturing efficiency of a manufacturer, and avoids the trouble of using the broken foil paper in the traditional paint drawing manufacturing process, thereby indirectly improving the work enthusiasm of the manufacturer and having a boosting propulsion effect on the development of the paint drawing technology.
Drawings
Fig. 1 is an exploded perspective view of an embodiment of the present invention.
Detailed Description
As shown in figure 1, the grinding device comprises a storage barrel 1, a grinding screen 2, a grinding cone 3, a sealing cover 4 and a pressure spring 5, wherein the storage barrel 1 is a closed bottle-shaped body with a barrel opening at the upper part, the grinding screen 2 is an upward open hollow inverted cone-shaped body with an inverted cone-shaped inner wall with a thick upper part and a thin lower part, an outer clamping edge 21 matched with the barrel opening of the storage barrel 1 is arranged at the periphery of the upper opening of the grinding screen 2, a plurality of grinding screen paper through holes 22 which are communicated with the inside and the outside of the grinding screen 2 are arranged on the side wall of the grinding screen 2, the upper part of the grinding cone 3 is a cylindrical shape with the outer wall matched with the inner wall of the sealing cover 4, the cylindrical lower part is an inverted cone with the shape of the outer wall consistent with the shape of the inner wall of the grinding screen 2, the sealing cover 4 is an inverted cup-shaped body with the shape of the cylindrical inner wall facing downwards, the inverted cone-shaped body part of the grinding screen 2 is clamped above the barrel opening of the storage barrel 1 and the inverted cone-shaped body part below the outer clamping edge 21 is positioned in the storage barrel 1, the inverted cone part of the grinding cone 3 is sleeved in the grinding sieve 2 from top to bottom, the outer wall of the inverted cone part is matched with the inner wall of the grinding sieve 2, the cover mouth end of the sealing cover 4 is downwards covered outside the grinding cone 3 and the outer clamping edge 22 of the grinding sieve 2, the cover mouth is fixed on the barrel mouth of the storage barrel 1, the outer wall of the cylindrical section above the inverted cone of the grinding cone 3 is in sliding fit with the cylindrical inner wall of the sealing cover 4 up and down, the top of the grinding cone 3 is connected with the crank 6 of the crank 61 above the sealing cover 4, the crank 62 below the crank 61 penetrates through the central hole on the top wall of the sealing cover 4 from top to bottom and is in sliding fit with the central hole, the lower end part of the crank 62 is fixedly connected with the central position of the top of the grinding cone 3, the pressure spring 5 is sleeved on the crank 62 between the top surface of the grinding cone 3 and the lower surface of the top wall of the sealing cover 4, the outer wall of the inverted cone part of the grinding cone 3 is matched with the inner wall of the grinding sieve 2, the side wall of the lower part of the storage barrel 1 is provided with a paper taking suction port, the paper taking suction port is provided with an elastic rubber plug 11, and the elastic rubber plug 11 is provided with an elastic self-closing hole 12 communicated with the inside and the outside of the storage barrel 1.
The middle part of the storage barrel 1 is thin cylindrical, the upper part of the thin cylindrical is in an inverted circular table shape with the upper part thick and the lower part thin, the upper part of the inverted circular table shape is in a thick cylindrical shape, the lower part of the thin cylindrical is in a circular table shape with the upper part thin and the lower part thick, and the middle part thin two ends of the storage barrel 1 are thick and are convenient to hold and hold by hands. An annular paper leakage space is arranged between the inner wall of the storage barrel 1 positioned at the periphery of the grinding screen 2 and the outer wall of the grinding screen 2. The top surface of the barrel opening of the storage barrel 1 is provided with a limiting clamping groove 13, and the lower surface of the outer clamping edge 21 of the grinding screen 2 is provided with a limiting clamping tenon 23 corresponding to the limiting clamping groove 13 on the storage barrel 1. The outer wall of the bung hole of the storage barrel 1 is provided with an external thread 14, the inner wall of the lower opening of the sealing cover 4 is provided with an internal thread 41 matched with the external thread 14 on the bung hole of the storage barrel 1, the sealing cover 4 is arranged on the bung hole of the storage barrel 1 through threads, and the upper part of the sealing cover 4 provided with the internal thread 41 is provided with an inner end face matched with the top surface of the outer clamping edge 21 of the grinding screen 2. The storage barrel 1 is a transparent barrel-shaped body made of glass or plastic, and the number and the position of broken foil paper in the storage barrel 1 can be conveniently observed.
The elastic self-closing hole 12 on the elastic rubber plug 11 is a conical hole with thick outside and thin inside towards the outer end of the storage barrel 1, and the end towards the inner end of the storage barrel 1 is an automatic closing hole.
Each grinding screen through hole 22 on the side wall of the grinding screen 2 is a circular hole or a hexagonal hole. The grinding screen 2 is an upward-opening inverted conical mesh screen made of thin steel sheets. The outer clamping edge 21 is an annular steel sheet which is integrally formed with the grinding screen 2 or an annular plastic ring which is integrally formed with the screen body of the grinding screen 2.
The outer wall of the inverted cone portion of the grinding cone 3 is provided with a plurality of grinding protrusions 31. The top surface of the grinding cone 3 is provided with a pressure spring lower limit table which is positioned at the periphery of the crank rod 62 and sleeved in the lower end of the pressure spring 5, and the lower surface of the top wall of the sealing cover 4 is provided with a pressure spring upper limit table which is positioned at the periphery of the central hole and sleeved in the upper end of the pressure spring 5. The lower end of the crank lever 62 is fixedly connected with the grinding cone 3 or is in an integrated structure, the crank 61 of the crank 6 consists of a transverse handle 63 and a handle 64, one end of the transverse handle 63 is hinged with the upper end of the crank lever 62, the other end of the transverse handle 63 is hinged with the handle 64, the diameters of the crank lever 62, the transverse handle 63 and the handle 64 of the crank 6 are the same, and the crank lever 62, the transverse handle 63 and the handle 64 can be opened into a straight rod shape so as to be taken out downwards from the central hole of the sealing cover 4.
A plurality of anti-slip ribs 42 are arranged on the outer surface of the side wall of the sealing cover 4 along the axial direction of the sealing cover 4.
The using method comprises the following steps: when the packing box is used, firstly, the sealing cover 4 is opened from the storage barrel 1, the sealing cover 4 is taken out from the grinding screen 2 with the grinding cone 3, then, the foil paper folded into small pieces is placed in the grinding screen 2, the grinding cone 3 is placed into the grinding screen 2 from top to bottom through the sealing cover 4 to press the foil paper, and finally, the sealing cover 4 is screwed on the storage barrel 1.
When grinding, an operator holds the barrel body of the storage barrel 1 by one hand, the handle 64 on the crank 6 is rocked by the other hand, the crank rod 62 can rotate in the grinding screen 2 with the grinding cone 3, foil paper can be ground by matching the grinding screen paper through hole 22 on the grinding screen 2 with the grinding protrusion 31 on the grinding cone 3, and the crushed foil paper which passes through the grinding screen paper through hole 22 can automatically leak into the storage barrel 1 after grinding, so that the purposes of grinding and screening the crushed foil paper are achieved. As the foil paper in the grinding screen 2 is reduced, the pressure spring 5 presses the grinding cone 3 to the grinding screen 2 to be in pressed fit with the inner wall of the grinding screen 2, so that the foil paper in the grinding screen 2 is ground and leaked into the storage barrel 1 as much as possible.
Since the wall of the storage barrel 1 is transparent, the amount and the position of the broken foil paper in the storage barrel 1 can be clearly seen from the outside of the storage barrel 1, and the broken foil paper can be controlled to flow to a proper position at the bottom of the storage barrel 1 by shaking the storage barrel 1. When the shredded foil paper is taken, the medical injector with the needle head can be used, the needle head is inserted into the storage barrel 1 from the elastic self-closing hole 12 on the elastic rubber plug 11 to absorb a proper amount of shredded foil paper, the elastic self-closing hole 12 can be automatically closed after the needle head is pulled out, and the situation that the shredded foil paper automatically flies and wastes can not occur. The broken foil paper sucked in the injector is slowly pushed out to enable the broken foil paper to float on the paint surface of the paint and adhere to the paint surface, and then the purpose of drawing the paint with the functions of gold scattering and silver scattering can be achieved.
Claims (7)
1. The utility model provides a garrulous selector of paper tinsel, it includes storage bucket (1), grinding sieve (2), grinding awl (3), sealed lid (4) and pressure spring (5), its characterized in that: the upper part of the grinding sieve (2) is a hollow inverted conical body with an upper thick inverted conical inner wall and a lower thin inverted conical inner wall, the periphery of the upper opening position of the grinding sieve (2) is provided with an outer clamping edge (21) matched with the bung hole of the storage barrel (1), the side wall of the grinding sieve (2) is provided with a plurality of grinding sieve paper through holes (22) communicated with the inside and the outside of the grinding sieve (2), the upper part of the grinding sieve (3) is a cylinder with the outer wall matched with the inner wall of the sealing cover (4), the lower part of the cylinder is an inverted cone with the shape of the outer wall consistent with the shape of the inner wall of the grinding sieve (2), the sealing cover (4) is an inverted cup with the shape of the cylindrical inner wall facing downwards, the outer clamping edge (21) of the grinding sieve (2) is clamped above the bung hole, the conical body below the outer clamping edge (21) is positioned in the storage barrel (1), the cone part of the grinding cone (3) is sleeved downwards on the grinding sieve (2) and is fixedly sleeved on the inner wall (4) of the cylindrical inner wall (2) facing downwards and the inner wall (4) of the grinding sieve (2) facing downwards, the cylindrical inner wall (2) is matched with the cylindrical inner wall (2) and the upper end (3) of the grinding sieve (2) from top to bottom, the cylindrical end (3) is fixedly arranged on the upper part of the cylindrical sealing cover (2), the top of grinding awl (3) is connected with crank (61) and is located crank (6) of sealed lid (4) top, crank rod (62) of crank (61) below from the top down pass centre bore on sealed lid (4) roof and with centre bore sliding fit, lower tip and the fixed continuous of top central point of grinding awl (3), pressure spring (5) are located between grinding awl (3) top surface and the lower surface of sealed lid (4) roof and overlap on crank rod (62), make grinding awl (3) back cone part outer wall and grinding sieve (2) inner wall sticiss the cooperation, be equipped with on the lateral wall of storage barrel (1) lower part position and get paper suction inlet, be equipped with on getting paper suction inlet elastic rubber plug (11), be equipped with on elastic rubber plug (11) intercommunication storage barrel (1) inside and outside elasticity from closed hole (12), the middle part of storage barrel (1) is cylindrical, cylindrical top is thick round platform shape down, the top of round platform shape down, the bottom of thin cylindrical top is thick round platform shape, make grinding awl (3) down thick conical shape, the elastic conical part is equipped with one end (1) outside the automatic back cone (1) of sealing hole, the elastic part is towards the outer wall of grinding barrel (1) of sealing hole (3).
2. Foil paper crushing and screening device according to claim 1, characterized in that an annular paper leakage space is provided between the inner wall of the storage barrel (1) located at the periphery of the grinding screen (2) and the outer wall of the grinding screen (2).
3. The foil paper crushing and screening device according to claim 1, characterized in that the top surface of the barrel mouth of the storage barrel (1) is provided with a limiting clamping groove (13), and the lower surface of the outer clamping edge (21) of the grinding screen (2) is provided with a limiting clamping tenon (23) corresponding to the limiting clamping groove (13) on the storage barrel (1).
4. The foil paper crushing and screening device according to claim 1, wherein an external thread (14) is arranged on the outer wall of the barrel opening of the storage barrel (1), an internal thread (41) matched with the external thread (14) on the barrel opening of the storage barrel (1) is arranged on the inner wall of the lower opening of the sealing cover (4), the sealing cover (4) is arranged on the barrel opening of the storage barrel (1) through threads, and an inner end face matched with the top surface of the external clamping edge (21) of the grinding screen (2) is arranged above the position where the internal thread (41) is arranged on the sealing cover (4).
5. Foil paper shredding and screening device according to claim 1, characterized in that the storage tub (1) is a transparent tub body made of glass or plastic for easy observation of how much and where the shredded foil paper is in the storage tub (1).
6. Foil paper crushing screener according to claim 1, characterized in that each grinding screen through hole (22) in the side wall of the grinding screen (2) is a circular hole or a hexagonal hole.
7. Foil paper crushing and screening device according to claim 1, characterized in that a plurality of anti-slip ribs (42) are provided on the outer surface of the side wall of the sealing cover (4) in the axial direction of the sealing cover (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810057881.9A CN107999244B (en) | 2018-01-22 | 2018-01-22 | Foil paper crushing screening device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810057881.9A CN107999244B (en) | 2018-01-22 | 2018-01-22 | Foil paper crushing screening device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107999244A CN107999244A (en) | 2018-05-08 |
| CN107999244B true CN107999244B (en) | 2023-07-21 |
Family
ID=62066170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810057881.9A Active CN107999244B (en) | 2018-01-22 | 2018-01-22 | Foil paper crushing screening device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107999244B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1069913A (en) * | 1991-08-26 | 1993-03-17 | 贡乾坤 | A kind of aluminium and paper separating method for aluminium foil paper |
| DE19741632A1 (en) * | 1997-02-13 | 1998-08-20 | Zassenhaus Gmbh & Co Kg | Mill for grinding granular material |
| CN101002719A (en) * | 2007-01-15 | 2007-07-25 | 天津市公安医院 | Device for grinding medical tablets |
| CN204710481U (en) * | 2015-06-12 | 2015-10-21 | 邹平县广原工业科技有限公司 | A kind of aluminium foil reducing mechanism |
| CN106861871A (en) * | 2017-02-21 | 2017-06-20 | 太原理工大学 | A kind of extruded layer breakdown mill formula ultrafine grinding device |
| CN107413499A (en) * | 2017-08-30 | 2017-12-01 | 宣城市万成机械科技有限公司 | A kind of fine gtinding drying device of kaolin powder |
| CN206688854U (en) * | 2017-04-07 | 2017-12-01 | 河南科技大学 | A kind of tablet grinding device |
| CN206746761U (en) * | 2017-03-10 | 2017-12-15 | 赵素娟 | A kind of drug inspection lapping device |
-
2018
- 2018-01-22 CN CN201810057881.9A patent/CN107999244B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1069913A (en) * | 1991-08-26 | 1993-03-17 | 贡乾坤 | A kind of aluminium and paper separating method for aluminium foil paper |
| DE19741632A1 (en) * | 1997-02-13 | 1998-08-20 | Zassenhaus Gmbh & Co Kg | Mill for grinding granular material |
| CN101002719A (en) * | 2007-01-15 | 2007-07-25 | 天津市公安医院 | Device for grinding medical tablets |
| CN204710481U (en) * | 2015-06-12 | 2015-10-21 | 邹平县广原工业科技有限公司 | A kind of aluminium foil reducing mechanism |
| CN106861871A (en) * | 2017-02-21 | 2017-06-20 | 太原理工大学 | A kind of extruded layer breakdown mill formula ultrafine grinding device |
| CN206746761U (en) * | 2017-03-10 | 2017-12-15 | 赵素娟 | A kind of drug inspection lapping device |
| CN206688854U (en) * | 2017-04-07 | 2017-12-01 | 河南科技大学 | A kind of tablet grinding device |
| CN107413499A (en) * | 2017-08-30 | 2017-12-01 | 宣城市万成机械科技有限公司 | A kind of fine gtinding drying device of kaolin powder |
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| Publication number | Publication date |
|---|---|
| CN107999244A (en) | 2018-05-08 |
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