CN108955165A - A kind of tower drier of levocarnitine production of raw medicine technique - Google Patents
A kind of tower drier of levocarnitine production of raw medicine technique Download PDFInfo
- Publication number
- CN108955165A CN108955165A CN201810717009.2A CN201810717009A CN108955165A CN 108955165 A CN108955165 A CN 108955165A CN 201810717009 A CN201810717009 A CN 201810717009A CN 108955165 A CN108955165 A CN 108955165A
- Authority
- CN
- China
- Prior art keywords
- shell
- levocarnitine
- sides
- production
- raw medicine
- 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
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000003814 drug Substances 0.000 title claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- PHIQHXFUZVPYII-ZCFIWIBFSA-N (R)-carnitine Chemical compound C[N+](C)(C)C[C@H](O)CC([O-])=O PHIQHXFUZVPYII-ZCFIWIBFSA-N 0.000 title claims abstract description 14
- 229960001518 levocarnitine Drugs 0.000 title claims abstract description 14
- 238000001035 drying Methods 0.000 claims abstract description 33
- 239000003381 stabilizer Substances 0.000 claims description 7
- 239000010425 asbestos Substances 0.000 claims description 4
- 229910052895 riebeckite Inorganic materials 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 239000012467 final product Substances 0.000 abstract description 4
- 238000007599 discharging Methods 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 description 29
- 239000000463 material Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 238000002207 thermal evaporation Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
- F26B11/12—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in stationary drums or other mainly-closed receptacles with moving stirring devices
- F26B11/14—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in stationary drums or other mainly-closed receptacles with moving stirring devices the stirring device moving in a horizontal or slightly-inclined plane
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/10—Heating arrangements using tubes or passages containing heated fluids, e.g. acting as radiative elements; Closed-loop systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/001—Handling, e.g. loading or unloading arrangements
- F26B25/002—Handling, e.g. loading or unloading arrangements for bulk goods
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/04—Agitating, stirring, or scraping devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B2200/00—Drying processes and machines for solid materials characterised by the specific requirements of the drying good
- F26B2200/08—Granular materials
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Drying Of Solid Materials (AREA)
Abstract
Belong to drying unit technical field disclosed in the invention patent, specially a kind of tower drier of levocarnitine production of raw medicine technique, including shell, housing cavity roof central location is vertically bolted with hollow drying stick, run through the top of shell at the top of hollow drying stick, high-temperature steam delivery pipe is connected at the top of hollow drying stick, bearing block is symmetrically bolted at left and right sides of case top, two side shaft holder inner cavities are plugged with agitating shaft, shell left side top is provided with feed pipe, bottom longitudinally offers through-hole at left and right sides of shell, two side through hole inner cavities are plugged with baffle, housing cavity bottom is welded with out funnel, discharging funnel bottom is connected with discharge nozzle, the second mounting rack is welded at the top of housing right side wall, vacuum pump is installed on the right side of second mounting rack, the New Scheme can effectively ensure that later period pharmacy final product quality, it improves simultaneously Drying efficiency.
Description
Technical field
The invention patent relates to drying unit technical field, specially a kind of levocarnitine production of raw medicine technique it is vertical
Dryer.
Background technique
Currently, being the production requirement for meeting subsequent processing as early as possible in pharmaceutical industry, dryer is usually borrowed by material
It is dried, to accelerate the rate of drying of material, shortens the material supply cycle between process, existing pharmaceutical machine dryer,
It is usually dried using pallet holding medicine, but drug can be gathered in a certain position of pallet, it is also necessary to push open manually, reduce and dry
The working efficiency of dry machine, therefore Chinese Patent Application No. CN201721232052.7 proposes a kind of pharmaceutical purpose medicinal material dryer, packet
Top cover, body, support column are included, the body top movable is equipped with top cover, is fixed with vertically arranged support in the body
Column, the body inner wall are fixed with several air-heaters, are equipped with several pieces of filter plates, the filter plate two in the body
End is equipped with vibrating motor, and the filter plate side is fixed with humidity sensor, and the organism bottom is movably equipped with catch basin,
Feed inlet A is equipped at the top of the body, the body side is equipped with exhaust outlet, and the support column is fixed with several ultraviolet lights
Lamp, the body side are equipped with several feed inlets B, and end cap is equipped in the feed inlet B, is equipped with display on the outside of the body
Screen, this kind of pharmaceutical purpose dryer has the following problems when in use, and when being dried, vibrating motor is merely able to spread out raw material
It opens, raw material can not be overturn, it is uneven to easily lead to raw material stoving, influences drying efficiency, and when needing to graininess medicinal material raw material
When being dried, directly contact being dried with raw material using hot wind, some effective components point being easy to cause in raw material
Solution, influences later period final product quality, for this purpose, it is proposed that a kind of tower drier of levocarnitine production of raw medicine technique.
Patent of invention content
The tower drier for being designed to provide a kind of levocarnitine production of raw medicine technique of the invention patent, on solving
This kind of pharmaceutical purpose dryer proposed in background technique is stated to have the following problems when in use, when being dried, vibrating motor
It is merely able to spread out raw material, raw material can not be overturn, it is uneven to easily lead to raw material stoving, influences drying efficiency, and when needing pair
When graininess medicinal material raw material is dried, directly contact being dried with raw material using hot wind, be easy to cause in raw material
The problem of some effective components are decomposed, and later period final product quality is influenced.
To achieve the above object, the invention patent provides the following technical solutions: a kind of levocarnitine production of raw medicine technique
Tower drier, including shell, the surface of shell is provided with insulating layer of asbestos, and bottom is spirally connected at left and right sides of the shell
There is stabilizer blade, housing cavity roof central location is vertically bolted with hollow drying stick, runs through shell at the top of the hollow drying stick
The top of body, the hollow drying stick top are connected with high-temperature steam delivery pipe, are symmetrically spirally connected at left and right sides of the case top
There is bearing block, bearing block inner cavity described in two sides is plugged with agitating shaft, and shaft bottom described in two sides all extends to the interior of shell
Chamber, the equal uniform welding of agitating shaft outer wall described in two sides have paddle, are connected at the top of the agitating shaft of right side by spline driven
Belt pulley, the left side agitating shaft top are connected with drive pulley, the driven pulley and drive pulley by spline
Between be connected with driving belt, the first mounting rack is welded on the left of the case top, is equipped at the top of first mounting rack
Driving motor, driving motor bottom power output end are connect with drive pulley, the shell left side top be provided with into
Expects pipe, shell left and right sides bottom longitudinally offer through-hole, and through-hole inner cavity described in two sides is plugged with baffle, two sides institute
It states the opposite one end of baffle and is welded with pull block, the equal longitudinal measure of housing cavity left and right sidewall has a scraper plate, in the shell
Bottom of chamber portion is welded with out funnel, and the discharging funnel bottom is connected with discharge nozzle, and the is welded at the top of the housing right side wall
Two mounting racks, the second mounting rack right side are equipped with vacuum pump, and the vacuum pump right side inlets are connected with suction tube, described
The suction tube other end runs through housing right side wall, and gas outlet is connected with exhaust pipe on the left of the vacuum pump.
Preferably, scraper plate cross section described in two sides is right angled triangle, and scraper plate bottom described in two sides respectively with two
The fitting of baffle top surface.
Preferably, sealing block is plugged at the charging pipe port.
Preferably, relief valve is connected on the hollow drying stick.
Preferably, stabilizer blade bottom described in two sides is provided with yielding rubber layer.
Preferably, the hollow drying stick is that copper dries stick.
Compared with prior art, the beneficial effect of the invention patent is:
1) New Scheme using high-temperature steam by cooperating the cooperation of hollow drying stick to heat raw material, so that in raw material
Vapor evaporation, and pumped out by vacuum pump, complete the drying to raw material, avoid raw material because directly connecing with hot wind
The case where touching, decomposing effective ingredient in raw material occurs, and guarantees later period pharmacy final product quality；
2) by the paddle being welded on agitating shaft when drying, raw material is stirred, guarantees that raw material is heated evenly, mentions simultaneously
High drying efficiency.
Detailed description of the invention
Fig. 1 is the invention patent structural schematic diagram；
Fig. 2 is the invention patent baffle and through-hole attachment structure schematic diagram；
Fig. 3 is the invention patent schematic diagram of housing structure.
In figure: 1 shell, 2 second mounting racks, 3 vacuum pumps, 4 suction tubes, 5 exhaust pipes, 6 agitating shafts, 7 bearing blocks, 8 driven
Belt pulley, 9 driving belts, 10 high-temperature steam delivery pipes, 11 driving motors, 12 drive pulleys, 13 feed pipes, 14 hollow drying
Stick, 15 paddles, 16 scraper plates, 17 go out funnel, 18 discharge nozzles, 19 stabilizer blades, 20 baffles, 21 pull blocks, 22 first mounting racks, 23
Through-hole, 24 insulating layer of asbestos.
Specific embodiment
Below in conjunction with the attached drawing in the invention patent embodiment, the technical solution in the invention patent embodiment is carried out
Clearly and completely describing, it is clear that described embodiment is only the invention patent a part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the invention patent, those of ordinary skill in the art are without making creative work
Every other embodiment obtained belongs to the range of the invention patent protection.
Please refer to Fig. 1-3, the invention patent provides a kind of technical solution: a kind of levocarnitine production of raw medicine technique is stood
Formula dryer, including shell 1,1 surface of shell are provided with insulating layer of asbestos 24, and 1 left and right sides bottom of shell is bolted with stabilizer blade
19,1 inner cavity roof central location of shell is vertically bolted with hollow drying stick 14, and the top of shell 1 is run through at the top of hollow drying stick 14
Portion is connected with high-temperature steam delivery pipe 10 at the top of hollow drying stick 14, and the 1 top left and right sides of shell is symmetrically bolted with bearing block 7,
Two side shaft holders, 7 inner cavity is plugged with agitating shaft 6, and agitating shaft 6 bottom in two sides all extends to the inner cavity of shell 1, two sides agitating shaft 6
The equal uniform welding of outer wall has a paddle 15, is connected with driven pulley 8, left side agitating shaft 6 by spline at the top of right side agitating shaft 6
Top is connected with drive pulley 12 by spline, and driving belt 9 is connected between driven pulley 8 and drive pulley 12,
1 top left side of shell is welded with the first mounting rack 22, and driving motor 11,11 bottom of driving motor are equipped at the top of the first mounting rack 22
Portion's power output end is connect with drive pulley 12, and 1 left side top of shell is provided with feed pipe 13,1 left and right sides bottom of shell
Longitudinal to offer through-hole 23, two side through hole, 23 inner cavity is plugged with baffle 20, and the opposite one end of two side baffle 20 is welded with pumping
Pulling block 21, the 1 equal longitudinal measure of inner cavity left and right sidewall of shell have scraper plate 16, and 1 intracavity bottom of shell is welded with out funnel 17, discharging
17 bottom of funnel is connected with discharge nozzle 18, is welded with the second mounting rack 2 at the top of 1 right side wall of shell, installs on the right side of the second mounting rack 2
There is vacuum pump 3,3 right side inlets of vacuum pump are connected with suction tube 4, and 4 other end of suction tube runs through 1 right side wall of shell, vacuum pump 3
Left side gas outlet is connected with exhaust pipe 5.
Wherein, 16 cross section of scraper plate described in two sides is right angled triangle, and 16 bottom of scraper plate described in two sides is respectively with two
A 20 top surface of baffle fitting, conveniently strikes off the raw material for being bonded in 20 surface of baffle, is plugged at 13 port of feed pipe
Sealing block avoids heat losses, is connected with relief valve on the hollow drying stick 14, the steaming after facilitating discharge and raw material heat exchange
Vapour, 19 bottom of stabilizer blade described in two sides are provided with yielding rubber layer, and the hollow drying stick 14 is that copper dries stick, facilitate high temperature
Heat exchange occurs for steam and raw material.
Working principle: the New Scheme is thrown by the way that the feed pipe 13 of 1 left side top of shell is arranged in when in use, by raw material
Enter to 1 inner cavity of shell, while being conveyed high-temperature steam into hollow 14 inner cavity of drying stick, to raw material by high-temperature steam delivery pipe 10
It is heated, and is worked by driving motor 11, drive pulley 12 is driven to rotate, drive follower belt using driving belt 9
8 rotation of wheel, cooperation are symmetrically screwed onto the bearing block 7 at 1 top of shell, so that the agitating shaft 6 for being plugged on 7 inner cavity of bearing block rotates,
Raw material is stirred using the paddle 15 for being welded on 6 outer wall of agitating shaft, so that raw material is heated evenly, the vapor in raw material
Suction tube 4 and exhaust pipe 5 is cooperated to aspirate the vapor after evaporation from 1 inner cavity of shell by starting vacuum pump 3 by thermal evaporation
Out, after the completion of drying, by pulling two side-pulling blocks 21, cooperation is provided with the through-hole 23 of 1 left and right sides of shell, by two side blocks
Plate 20 pulls out shell 1, and the raw material after drying is fallen to out on funnel 17, has passed through and has been connected to out going out for 17 bottom of funnel
Expects pipe 13, raw material is taken out, and completes drying.
While there has been shown and described that the embodiment of the invention patent, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principle and spirit of the invention patent, repaired
Change, replacement and variant, the range of the invention patent is defined by the appended claims and the equivalents thereof.
Claims (6)
1. a kind of tower drier of levocarnitine production of raw medicine technique, including shell (1), it is characterised in that: the shell
(1) surface is provided with insulating layer of asbestos (24), and bottom is bolted with stabilizer blade (19), the shell at left and right sides of the shell (1)
(1) roof central location in inner cavity is vertically bolted with hollow drying stick (14), runs through shell (1) at the top of the hollow drying stick (14)
Top, be connected with high-temperature steam delivery pipe (10) at the top of the hollow drying stick (14), the left and right sides at the top of the shell (1)
It is symmetrically bolted with bearing block (7), bearing block (7) inner cavity described in two sides is plugged with agitating shaft (6), agitating shaft (6) described in two sides
Bottom all extends to the inner cavity of shell (1), and the equal uniform welding of agitating shaft described in two sides (6) outer wall has paddle (15), right side institute
It states and is connected with driven pulley (8) at the top of agitating shaft (6) by spline, connected at the top of the left side agitating shaft (6) by spline
Have drive pulley (12), is connected with driving belt (9) between the driven pulley (8) and drive pulley (12), it is described
Shell (1) top left side is welded with the first mounting rack (22), is equipped with driving motor (11) at the top of first mounting rack (22),
Driving motor (11) the bottom power output end is connect with drive pulley (12), and shell (1) left side top is provided with
Feed pipe (13), shell (1) left and right sides bottom longitudinally offer through-hole (23), and through-hole (23) inner cavity described in two sides is equal
It is plugged with baffle (20), the opposite one end of baffle (20) described in two sides is welded with pull block (21), described shell (1) inner cavity or so
The equal longitudinal measure of side wall has scraper plate (16), and shell (1) intracavity bottom is welded with out funnel (17), the funnel out
(17) bottom is connected with discharge nozzle (18), is welded with the second mounting rack (2) at the top of shell (1) right side wall, second peace
It shelves and is equipped with vacuum pump (3) on the right side of (2), vacuum pump (3) right side inlets are connected with suction tube (4), the suction tube
(4) other end runs through shell (1) right side wall, and gas outlet is connected with exhaust pipe (5) on the left of the vacuum pump (3).
2. a kind of tower drier of levocarnitine production of raw medicine technique according to claim 1, it is characterised in that: two
Scraper plate described in side (16) cross section is right angled triangle, and scraper plate described in two sides (16) bottom is pushed up with two baffles (20) respectively
The fitting of portion surface.
3. a kind of tower drier of levocarnitine production of raw medicine technique according to claim 1, it is characterised in that: institute
It states and is plugged with sealing block at feed pipe (13) port.
4. a kind of tower drier of levocarnitine production of raw medicine technique according to claim 1, it is characterised in that: institute
It states and is connected with relief valve on hollow drying stick (14).
5. a kind of tower drier of levocarnitine production of raw medicine technique according to claim 1, it is characterised in that: two
Stabilizer blade described in side (19) bottom is provided with yielding rubber layer.
6. a kind of tower drier of levocarnitine production of raw medicine technique according to claim 1, it is characterised in that: institute
Stating hollow drying stick (14) is that copper dries stick.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810717009.2A CN108955165A (en) | 2018-07-03 | 2018-07-03 | A kind of tower drier of levocarnitine production of raw medicine technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810717009.2A CN108955165A (en) | 2018-07-03 | 2018-07-03 | A kind of tower drier of levocarnitine production of raw medicine technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108955165A true CN108955165A (en) | 2018-12-07 |
Family
ID=64485450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810717009.2A Pending CN108955165A (en) | 2018-07-03 | 2018-07-03 | A kind of tower drier of levocarnitine production of raw medicine technique |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108955165A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113834302A (en) * | 2021-10-22 | 2021-12-24 | 江苏卓峰新材料科技有限公司 | Multi-angle stirring type drying device for flame retardant and using method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1022668C2 (en) * | 2003-02-13 | 2004-08-16 | Hosokawa Micron B V | Stirred freeze drying. |
| JP2012217977A (en) * | 2011-04-14 | 2012-11-12 | Kansai Electric Power Co Inc:The | Food waste processor |
| CN106610189A (en) * | 2015-11-04 | 2017-05-03 | 玉门油田科达化学有限责任公司 | Drum scraper drying machine |
| CN206674920U (en) * | 2017-03-13 | 2017-11-28 | 郑上海 | A kind of vertical grain dryer with conveying device |
| CN206729132U (en) * | 2017-04-13 | 2017-12-12 | 赣州哎哆罗农业开发有限公司 | A kind of auto-manual system carrot powder making apparatus |
| CN206862048U (en) * | 2017-05-24 | 2018-01-09 | 江西省进贤县粮友绿色食品有限公司 | A kind of agricultural byproducts processing drying unit |
| CN107593484A (en) * | 2017-11-10 | 2018-01-19 | 耒阳市晓田牧业有限责任公司 | A kind of pig drawing-in device |
| CN107677074A (en) * | 2017-11-21 | 2018-02-09 | 湖北扁医健康生物科技有限公司 | Processing of crude drugs high-temperature hot-air circulates baking box |
| CN207197141U (en) * | 2017-09-25 | 2018-04-06 | 无锡市特殊教育学校 | A kind of pharmaceutical purpose medicinal material dryer |
| CN208595777U (en) * | 2018-07-03 | 2019-03-12 | 南京拉艾夫医药科技有限公司 | A kind of tower drier of levocarnitine production of raw medicine technique |
-
2018
- 2018-07-03 CN CN201810717009.2A patent/CN108955165A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1022668C2 (en) * | 2003-02-13 | 2004-08-16 | Hosokawa Micron B V | Stirred freeze drying. |
| JP2012217977A (en) * | 2011-04-14 | 2012-11-12 | Kansai Electric Power Co Inc:The | Food waste processor |
| CN106610189A (en) * | 2015-11-04 | 2017-05-03 | 玉门油田科达化学有限责任公司 | Drum scraper drying machine |
| CN206674920U (en) * | 2017-03-13 | 2017-11-28 | 郑上海 | A kind of vertical grain dryer with conveying device |
| CN206729132U (en) * | 2017-04-13 | 2017-12-12 | 赣州哎哆罗农业开发有限公司 | A kind of auto-manual system carrot powder making apparatus |
| CN206862048U (en) * | 2017-05-24 | 2018-01-09 | 江西省进贤县粮友绿色食品有限公司 | A kind of agricultural byproducts processing drying unit |
| CN207197141U (en) * | 2017-09-25 | 2018-04-06 | 无锡市特殊教育学校 | A kind of pharmaceutical purpose medicinal material dryer |
| CN107593484A (en) * | 2017-11-10 | 2018-01-19 | 耒阳市晓田牧业有限责任公司 | A kind of pig drawing-in device |
| CN107677074A (en) * | 2017-11-21 | 2018-02-09 | 湖北扁医健康生物科技有限公司 | Processing of crude drugs high-temperature hot-air circulates baking box |
| CN208595777U (en) * | 2018-07-03 | 2019-03-12 | 南京拉艾夫医药科技有限公司 | A kind of tower drier of levocarnitine production of raw medicine technique |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113834302A (en) * | 2021-10-22 | 2021-12-24 | 江苏卓峰新材料科技有限公司 | Multi-angle stirring type drying device for flame retardant and using method |
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| 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 |
Application publication date: 20181207 |
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| RJ01 | Rejection of invention patent application after publication |