CN107270678A - The quartz sand circulation drying equipment that construction is used - Google Patents
The quartz sand circulation drying equipment that construction is used Download PDFInfo
- Publication number
- CN107270678A CN107270678A CN201710641830.6A CN201710641830A CN107270678A CN 107270678 A CN107270678 A CN 107270678A CN 201710641830 A CN201710641830 A CN 201710641830A CN 107270678 A CN107270678 A CN 107270678A
- Authority
- CN
- China
- Prior art keywords
- tank body
- quartz sand
- welded
- liter
- drying equipment
- 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.)
- Withdrawn
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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
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
-
- 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
- F26B25/02—Applications of driving mechanisms, not covered by another subclass
-
- 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
- F26B2200/14—Sand
Abstract
The invention provides the quartz sand circulation drying equipment that a kind of construction is used, including tank body；The tank body is arranged to the hollow cylinder of two ends connection, and tank body top open part is provided with lid, tank base opening and is provided with bottom；Feed pipe is welded with the left of upper lid；Exhaust column is welded with tank body top sidewall；Air exhauster is provided with the exhaust column；Drainage conduit is welded with the left of bottom surface, bottom bottom surface is welded with support；Tank interior is set to drying chamber；Hot gas is provided with the drying chamber and uniformly expects device with agitating device and liter；Setting of the present invention by hot gas uniformly with agitating device, the hot-air for being blasted air-heater using the gas distribution pipe of rotation is uniformly sprayed onto in tank body, the quartz sand of tank base is stirred by the agitating plate of rotation and stirred, coordinate to rise using the liter barrel of rotation and expect that device realizes that the circulation to quartz sand is stirred, cyclic drying is carried out to quartz sand, beneficial to raising drying uniformity.
Description
Technical field
The present invention relates to a kind of building machinery, the quartz sand circulation drying equipment that specifically a kind of construction is used.
Background technology
Quartz sand is quartz through the broken quartz particles processed.Quartz is a kind of nonmetallic mineral, is one
Plant hard, wear-resisting, stable chemical performance silicate mineral.Quartz sand is important industrial mineral raw material, non-chemical dangerous material,
Be widely used in glass, casting, ceramics and fire proofing material, smelting duriron, flux for metallurgy, metallurgy, building, chemical industry, plastics, rubber,
Abrasive material, the industry such as filtrate.
Substantial amounts of quartz sand is used the need in building trade, quartz sand needs to carry out drying and processing in processing procedure,
Typically quartz sand amount is big, and this causes a large amount of quartz sands not high into drying unit drying efficiency, and quartz sand cannot be fully and equal
Even drying, influences the utilization to quartz sand.
The content of the invention
For above-mentioned the deficiencies in the prior art, used the technical problem to be solved in the present invention is to provide a kind of construction
Quartz sand circulation drying equipment
In order to solve the above technical problems, the invention provides following technical scheme：
The quartz sand circulation drying equipment that a kind of construction is used, including tank body；The tank body is arranged to the sky of two ends connection
Heart cylinder, and tank body top open part is provided with lid, tank base opening and is provided with bottom；It is welded and fixed on the left of upper lid
There is feed pipe；Exhaust column is welded with tank body top sidewall；Air exhauster is provided with the exhaust column；Inlayed on tank wall
It is embedded with observation window；Drainage conduit is welded with the left of bottom surface, bottom bottom surface is welded with support；Set in the drainage conduit
It is equipped with the striker plate of drawer type；Tank interior is set to drying chamber；Hot gas is provided with the drying chamber uniformly and agitating device
With a liter material device；The hot gas uniformly with agitating device by the first motor, installing plate, first gear, second gear, column spinner,
Airway tube, gas distribution pipe, agitating plate, liter barrel, blast pipe and air-heater composition；First motor is bolted on installation
Plate upper surface, and the main shaft of the first motor is welded and fixed with first gear upper surface middle part；The first gear and second gear
Intermeshing；The second gear is weldingly fixed on rotation column outer wall；At the top of the column spinner with the socket of air blast bottom of the tube simultaneously
Gap coordinates, and is symmetrically welded in column spinner bottom sidewall and is fixed with two airway tubes, and two air guide tube ends are provided with cloth
Tracheae；Gas distribution bottom of the tube is welded with agitating plate, and gas distribution pipe side wall is connected by connecting plate with rising barrel；The blast pipe
Installing plate upper surface is weldingly fixed on, and air-heater is provided with blast pipe；The material device that rises is by the second motor, liter material rotating shaft
With a liter flitch composition；Second motor is connected by decelerator with rising material rotating shaft, and the second motor and decelerator pass through bolt
It is fixed on bottom lower surface；The material rotating shaft perficial helical that rises is welded with a liter flitch.
It is used as further improvement project of the invention：The upper lid and bottom lid by screw bolt and nut mutually screw with
Tank body is fixedly connected, and junction is provided with sealing ring；Upper lid, tank body and bottom are made of stainless steel.
It is used as further improvement project of the invention：The observation window is made up of safety glass, and observation window connects with tank body
The place of connecing is provided with sealing ring.
It is used as further improvement project of the invention：The installing plate is arranged to U-shaped, is weldingly fixed on cap upper surface.
It is used as further improvement project of the invention：The column spinner is connect by rolling bearing with installing plate and top cap.
It is used as further improvement project of the invention：The gas distribution pipe surface is evenly equipped with some qi-emitting holes, and gas distribution pipe, leads
Tracheae and column spinner are internally provided with gas flow.
It is used as further improvement project of the invention：Described liter of barrel is arranged to the hollow cylinder of two ends connection.
Compared with prior art, the beneficial effects of the invention are as follows：
Setting of the present invention by hot gas uniformly with agitating device, driving force is provided using the first motor, by first gear and
The transmission of second gear, drives column spinner rotation, and column spinner drives airway tube, gas distribution pipe, agitating plate and rises barrel rotation, utilizes
The hot-air that the gas distribution pipe of rotation blasts air-heater is uniformly sprayed onto in tank body, by the agitating plate of rotation to tank base
Quartz sand be stirred and stir, coordinated using the liter barrel of rotation and rise a material device and be lifted up the quartz sand of tank base,
The quartz sand being lifted up drops back into tank base from new under the influence of centrifugal force, realizes that the circulation to quartz sand is stirred, just
In carrying out cyclic drying to quartz sand, beneficial to raising drying uniformity.
Brief description of the drawings
Fig. 1 is the structural representation for the quartz sand circulation drying equipment that construction is used；
Fig. 2 is the structural representation of hot gas uniformly with agitating device in the quartz sand circulation drying equipment that construction is used；
Fig. 3 is the structural representation of liter material device in the quartz sand circulation drying equipment that construction is used.
In figure：Covered on 1- feed pipes, 2-, 3- air exhausters, 4- exhaust columns, 5- tank bodies, 6- drying chambers, 7- bottoms, 8- supports,
9- drainage conduits, 10- observation windows, 11- rises material device, 12- hot gas uniformly and agitating device, 13- air-heaters, 14- blast pipes, 15-
First motor, 16- installing plates, 17- first gears, 18- gas distribution pipes, 19- connecting plates, 20- gas flows, 21- agitating plates, 22-
Qi-emitting hole, 23- rises barrel, and 24- airway tubes, 25- column spinners, 26- second gears, 27- rises material rotating shaft, and 28- rises flitch, and 29- subtracts
Fast device, the motors of 30- second.
Embodiment
The technical scheme of this patent is described in more detail with reference to embodiment.
The embodiment of this patent is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, is only used for explaining this patent, and it is not intended that limitation to this patent.
In the description of this patent, it is to be understood that term " " center ", " on ", " under ", "front", "rear", " left side ",
The orientation or position relationship of the instruction such as " right side ", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " are based on shown in the drawings
Orientation or position relationship, are for only for ease of description this patent and simplify and describe, rather than indicate or imply signified device or
Element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that limitation to this patent.
, it is necessary to illustrate in the description of this patent, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection ", " setting " should be interpreted broadly, for example, it may be being fixedly linked, setting or being detachably connected, set
Put, or be integrally connected, set.For the ordinary skill in the art, it can understand that above-mentioned term exists with concrete condition
Concrete meaning in this patent.
Referring to Fig. 1, the quartz sand circulation drying equipment that a kind of construction is used is present embodiments provided, including tank body
5；The tank body 5 is arranged to the hollow cylinder of two ends connection, and the top open part of tank body 5 is provided with lid 2, the bottom of tank body 5
Bottom 7 is provided with opening；The upper lid 2 and bottom 7 are fixedly connected by mutually screwing for screw bolt and nut with tank body 5,
And junction is provided with sealing ring；Upper lid 2, tank body 5 and bottom 7 are made of stainless steel；The upper left side of lid 2 is welded with charging
Pipe 1；Exhaust column 4 is welded with the top sidewall of tank body 5；Air exhauster 3 is provided with the exhaust column 4；Pass through air exhauster 3
Set, the moisture that can will dry generation by quartz in tank body 5 is extracted out, beneficial to quickening rate of drying；It is inlaid with the side wall of tank body 5
Observation window 10；The observation window 10 is made up of safety glass, and observation window 10 is provided with sealing ring with the junction of tank body 5；Observation
The setting of window 10, is easy to observe the drying process of quartz sand in tank body 5；Drainage conduit 9, bottom are welded with the left of the surface of bottom 7
The bottom surface of lid 7 is welded with support 8；The striker plate of drawer type is provided with the drainage conduit 9；Drying is set to inside tank body 5
Chamber 6；Hot gas is provided with the drying chamber 6 and uniformly expects device 11 with agitating device 12 and liter；Uniformly filled by hot gas with stirring
Put 12 by hot-air rotate it is uniform into tank body 5, be easy to that quartz sand is carried out fully to dry, and to the quartz of the bottom of tank body 5
Sand, which is stirred, to be stirred；It is elevated by the quartz sand of the bottom of tank body 5 to the top lift of tank body 5 by a liter setting for material device 11
The quartz sand got up drops back into the bottom of tank body 5 again under the influence of centrifugal force, realizes that the circulation to quartz sand is stirred, beneficial to quartz
Sand fully dry.
Referring to Fig. 2, in the present invention, the hot gas is uniformly with agitating device 12 by the first motor 15, installing plate 16, first
Gear 17, second gear 26, column spinner 25, airway tube 24, gas distribution pipe 18, agitating plate 21, liter barrel 23, blast pipe 14 and hot blast
Machine 13 is constituted；First motor 15 is bolted on the upper surface of installing plate 16, and the main shaft and first of the first motor 15
The upper surface middle part of gear 17 is welded and fixed；The installing plate 16 is arranged to U-shaped, is weldingly fixed on the upper surface of lid 2；Described first
Gear 17 is intermeshed with second gear 26；The second gear 26 is weldingly fixed on the outer wall of column spinner 25；The column spinner
25 are connected by rolling bearing with installing plate 16 and upper lid 2；The top of column spinner 25 coordinates with the socket of the bottom of blast pipe 14 and gap,
And be symmetrically welded in the bottom sidewall of column spinner 25 and be fixed with two airway tubes 24, two ends of airway tube 24 are provided with gas distribution pipe
18；The surface of gas distribution pipe 18 is evenly equipped with some qi-emitting holes 22, and gas distribution pipe 18, airway tube 24 and column spinner 25 are internally provided with
Gas flow 20；The bottom of gas distribution pipe 18 is welded with agitating plate 21, and the side wall of gas distribution pipe 18 passes through connecting plate 19 and liter barrel
23 connections；Described liter of barrel 23 is arranged to the hollow cylinder of two ends connection；The blast pipe 14 is weldingly fixed on installing plate 16
Air-heater 13 is provided with upper surface, and blast pipe 14；By the setting of hot gas uniformly with agitating device 12, the first motor is utilized
15 provide driving force, by the transmission of first gear 17 and second gear 26, drive column spinner 25 to rotate, and column spinner 25 drives and led
Tracheae 24, gas distribution pipe 18, agitating plate 21 and liter barrel 23 rotate, and the heat for being blasted air-heater 13 using the gas distribution pipe 18 of rotation is empty
Gas is uniformly sprayed onto in tank body 5, and the quartz sand of the bottom of tank body 5 is stirred by the agitating plate 21 of rotation and stirred, and is utilized
The liter barrel 23 of rotation, which coordinates to rise, expects that the quartz sand of the bottom of tank body 5 is lifted up by device 11, and the quartz sand being lifted up exists
The bottom of tank body 5 is dropped back into from new in the presence of centrifugal force, realizes that the circulation to quartz sand is stirred, is easy to that quartz sand circulate to do
It is dry, beneficial to raising drying uniformity.
Referring to Fig. 3, in the present invention, it is described to rise material device 11 by the second motor 30, liter material rotating shaft 27 and rise 28 groups of flitch
Into；Second motor 30 is connected by decelerator 29 with rising material rotating shaft 27, and the second motor 30 and decelerator 29 pass through bolt
It is fixed on the lower surface of bottom 7；The material perficial helical of rotating shaft 27 that rises is welded with liter flitch 28；Pass through setting for liter material device 11
Put, drive liter material rotating shaft 27 to rotate using the second motor 30, rise material rotating shaft 27 and drive liter flitch 28 to rotate, set using spiral
Rise flitch 28 coordinate rise barrel 23 by the quartz sand of the bottom of tank body 5 to the top lift of tank body 5, the quartz sand being lifted up from
Again the bottom of tank body 5 is dropped back into the presence of mental and physical efforts, realizes that the circulation to quartz sand is stirred, is easy to quartz sand fully dry.
The present invention operation principle be：Quartz sand to be dried is added into tank body 5 by feed pipe 1, quartz sand is rising
Circulation is carried out in the presence of material device 11 to stir, and jet drying is uniformly carried out to quartz sand with agitating device 12 by hot gas,
Quartz sand dries the moisture produced and extracts tank body 5 out by air exhauster 3, beneficial to quickening rate of drying；Dried quartz sand passes through
Drainage conduit 9 discharges tank body 5.
The better embodiment to this patent is explained in detail above, but this patent is not limited to above-mentioned embodiment party
, can also be on the premise of this patent objective not be departed from formula, the knowledge that one skilled in the relevant art possesses
Make a variety of changes.
Claims (7)
1. the quartz sand circulation drying equipment that a kind of construction is used, including tank body（5）；It is characterized in that, the tank body（5）If
It is set to the hollow cylinder of two ends connection, and tank body（5）Top open part is provided with lid（2）, tank body（5）Set at bottom opening
It is equipped with bottom（7）；Upper lid（2）Left side is welded with feed pipe（1）；Tank body（5）Exhaust column is welded with top sidewall
（4）；The exhaust column（4）On be provided with air exhauster（3）；Tank body（5）Observation window is inlaid with the wall of side（10）；Bottom（7）Surface
Left side is welded with drainage conduit（9）, bottom（7）Bottom surface is welded with support（8）；The drainage conduit（9）On be provided with and take out
The striker plate of drawer formula；Tank body（5）Inside is set to drying chamber（6）；The drying chamber（6）In be provided with hot gas uniformly with stirring fill
Put（12）With a liter material device（11）；The hot gas is uniformly and agitating device（12）By the first motor（15）, installing plate（16）, first
Gear（17）, second gear（26）, column spinner（25）, airway tube（24）, gas distribution pipe（18）, agitating plate（21）, rise barrel（23）、
Blast pipe（14）And air-heater（13）Composition；First motor（15）It is bolted on installing plate（16）Upper surface, and
First motor（15）Main shaft and first gear（17）Upper surface middle part is welded and fixed；The first gear（17）With second gear
（26）Intermeshing；The second gear（26）It is weldingly fixed on column spinner（25）On outer wall；The column spinner（25）Top with
Blast pipe（14）Bottom socket and gap cooperation, and column spinner（25）It is symmetrically welded in bottom sidewall and is fixed with two airway tubes
（24）, two airway tubes（24）End is provided with gas distribution pipe（18）；Gas distribution pipe（18）Bottom is welded with agitating plate（21）,
And gas distribution pipe（18）Side wall passes through connecting plate（19）With a liter barrel（23）Connection；The blast pipe（14）It is weldingly fixed on installing plate
（16）Upper surface, and blast pipe（14）On be provided with air-heater（13）；It is described to rise material device（11）By the second motor（30）, rise material
Rotating shaft（27）With a liter flitch（28）Composition；Second motor（30）Pass through decelerator（29）With a liter material rotating shaft（27）Connection, and
Second motor（30）And decelerator（29）It is bolted on bottom（7）Lower surface；It is described to rise material rotating shaft（27）Perficial helical
It is welded with a liter flitch（28）.
2. the quartz sand circulation drying equipment that construction according to claim 1 is used, it is characterized in that, the upper lid
（2）And bottom（7）Equal mutually screwing and tank body by screw bolt and nut（5）It is fixedly connected, and junction is provided with sealing ring；
Upper lid（2）, tank body（5）And bottom（7）It is made of stainless steel.
3. the quartz sand circulation drying equipment that construction according to claim 1 is used, it is characterized in that, the observation window
（10）It is made up of safety glass, and observation window（10）With tank body（5）Junction is provided with sealing ring.
4. the quartz sand circulation drying equipment that construction according to claim 1 is used, it is characterized in that, the installing plate
（16）It is arranged to U-shaped, is weldingly fixed on lid（2）Upper surface.
5. the quartz sand circulation drying equipment that construction according to claim 1 is used, it is characterized in that, the column spinner
（25）Pass through rolling bearing and installing plate（16）With upper lid（2）Connection.
6. the quartz sand circulation drying equipment that construction according to claim 1 is used, it is characterized in that, the gas distribution pipe
（18）Surface is evenly equipped with some qi-emitting holes（22）, and gas distribution pipe（18）, airway tube（24）And column spinner（25）It is internally provided with gas
Body runner（20）.
7. the quartz sand circulation drying equipment that construction according to claim 1 is used, it is characterized in that, described liter of barrel
（23）It is arranged to the hollow cylinder of two ends connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710641830.6A CN107270678A (en) | 2017-07-31 | 2017-07-31 | The quartz sand circulation drying equipment that construction is used |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710641830.6A CN107270678A (en) | 2017-07-31 | 2017-07-31 | The quartz sand circulation drying equipment that construction is used |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107270678A true CN107270678A (en) | 2017-10-20 |
Family
ID=60075189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710641830.6A Withdrawn CN107270678A (en) | 2017-07-31 | 2017-07-31 | The quartz sand circulation drying equipment that construction is used |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107270678A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108020050A (en) * | 2017-10-25 | 2018-05-11 | 南安市科联专利应用服务有限公司 | The circulation apparatus for drying of organic fertilizer production |
| CN108043728A (en) * | 2017-10-25 | 2018-05-18 | 南安市科联专利应用服务有限公司 | Vertical type wheat husk blowing-type removes cleaning equipment |
| CN108106363A (en) * | 2017-12-04 | 2018-06-01 | 郑州诚合信息技术有限公司 | Drying chamber is stirred in chemical industry solid material air blast |
| CN108131927A (en) * | 2017-12-04 | 2018-06-08 | 郑州诚合信息技术有限公司 | Industrial chemicals stirs circulation drying equipment |
| CN108195169A (en) * | 2017-12-28 | 2018-06-22 | 郑州源冉生物技术有限公司 | A kind of air circulating type chemical industry powder drying equipment |
| CN108562137A (en) * | 2018-04-16 | 2018-09-21 | 武汉百草园生化药业有限公司 | A kind of calculus bovis factitius production drying unit |
| CN110160339A (en) * | 2018-02-05 | 2019-08-23 | 金德芝 | A kind of industrial material mixing and drying device based on sector gear disturbance theory |
| CN112797762A (en) * | 2021-01-11 | 2021-05-14 | 重庆裕丰米业有限公司 | Corn drying device |
-
2017
- 2017-07-31 CN CN201710641830.6A patent/CN107270678A/en not_active Withdrawn
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108020050A (en) * | 2017-10-25 | 2018-05-11 | 南安市科联专利应用服务有限公司 | The circulation apparatus for drying of organic fertilizer production |
| CN108043728A (en) * | 2017-10-25 | 2018-05-18 | 南安市科联专利应用服务有限公司 | Vertical type wheat husk blowing-type removes cleaning equipment |
| CN108106363A (en) * | 2017-12-04 | 2018-06-01 | 郑州诚合信息技术有限公司 | Drying chamber is stirred in chemical industry solid material air blast |
| CN108131927A (en) * | 2017-12-04 | 2018-06-08 | 郑州诚合信息技术有限公司 | Industrial chemicals stirs circulation drying equipment |
| CN108195169A (en) * | 2017-12-28 | 2018-06-22 | 郑州源冉生物技术有限公司 | A kind of air circulating type chemical industry powder drying equipment |
| CN110160339A (en) * | 2018-02-05 | 2019-08-23 | 金德芝 | A kind of industrial material mixing and drying device based on sector gear disturbance theory |
| CN108562137A (en) * | 2018-04-16 | 2018-09-21 | 武汉百草园生化药业有限公司 | A kind of calculus bovis factitius production drying unit |
| CN112797762A (en) * | 2021-01-11 | 2021-05-14 | 重庆裕丰米业有限公司 | Corn drying device |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20171020 |