CN113028778A - Intelligent drying system in negative carbon black production process - Google Patents

Intelligent drying system in negative carbon black production process Download PDF

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Publication number
CN113028778A
CN113028778A CN202110433980.4A CN202110433980A CN113028778A CN 113028778 A CN113028778 A CN 113028778A CN 202110433980 A CN202110433980 A CN 202110433980A CN 113028778 A CN113028778 A CN 113028778A
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China
Prior art keywords
carbon black
device main
main part
production process
drying system
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Pending
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CN202110433980.4A
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Chinese (zh)
Inventor
徐正华
杨立志
张建军
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Shizuishan Huahao Chemical Co ltd
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Shizuishan Huahao Chemical Co ltd
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Priority to CN202110433980.4A priority Critical patent/CN113028778A/en
Publication of CN113028778A publication Critical patent/CN113028778A/en
Pending legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B11/00Machines or apparatus for drying solid materials or objects with movement which is non-progressive
    • F26B11/12Machines 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
    • F26B11/14Machines 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B23/00Heating arrangements
    • F26B23/04Heating arrangements using electric heating
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/005Treatment of dryer exhaust gases
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/04Agitating, stirring, or scraping devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/06Chambers, containers, or receptacles

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

The invention discloses an intelligent drying system in a negative carbon black production process, and relates to the technical field of negative carbon black production. According to the carbon black drying device, the motor, the heating rod, the electromagnet, the rotating piece and the connecting plate are used, in the using process, a user adds carbon black into the device main body through the feeding pipe, the user starts the heating rod through the operation panel, meanwhile, the motor is rotated through the operation panel, the rotating shaft drives the packing auger to rotate, and then the carbon black in the device main body can be stirred, so that the carbon black in the device main body is uniformly heated, the carbon black is more conveniently dried, after the carbon black is dried, the user controls the electromagnet through the operation panel, the electromagnet is closed, the connecting plate rotates with the device main body through the rotating piece, and the dried carbon black can be discharged.

Description

Intelligent drying system in negative carbon black production process
Technical Field
The invention relates to the technical field of negative carbon black production, in particular to an intelligent drying system in a negative carbon black production process.
Background
Carbon black, which is an amorphous carbon, light, loose and extremely fine black powder, has a very large surface area ranging from 10 to 3000m2/g, is a product obtained by incomplete combustion or thermal decomposition of a carbonaceous material under insufficient air conditions, and has a structural property represented by the degree of aggregation of carbon black particles into chains or grapes, and carbon black composed of aggregates consisting of the size and form of the aggregates and the number of particles in each aggregate is called high-structure carbon black.
The intelligent drying system carbon black in current negative pole carbon black production process is in production and processing, thereby it is rotten to wet to adsorb the moisture in the air easily, make the carbon black product easily appear phenomenons such as caking, seriously influence the quality of carbon black production line operating stability and carbon black product, so need carry out drying process to the carbon black product, but negative pole carbon black is heated unevenly in current drying system, thereby lead to partial carbon black to obtain abundant drying easily, the work efficiency of drying system has been influenced, and intelligent drying system in the current negative pole carbon black production process is in the use, easily mix some dust and be difficult for getting rid of in the negative pole carbon black, thereby the production quality of negative pole carbon black has been reduced easily.
Disclosure of Invention
Based on the above, the invention aims to provide an intelligent drying system in a production process of negative carbon black, so as to solve the technical problems of poor drying effect and inconvenience in removing dust of residues in the carbon black.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an intelligent drying system in negative carbon black production process, includes the device main part, the bottom of device main part is connected with the base, the inside top of device main part is provided with dry subassembly, one side of device main part is provided with the dust removal subassembly, the surface mounting of base has operating panel.
Through adopting above-mentioned technical scheme, in the use, the user can operate through operating panel control motor, heating rod, electro-magnet, air exhauster and electric putter to alleviate user's operation burden, improved the practicality of the intelligent drying system in this kind of negative pole carbon black production process.
Further, dry subassembly is including installing the motor in the middle of the device main part top, the output of motor is connected with the pivot that extends to the device main part inside, the surface of pivot is connected with the auger, the output of pivot is connected with the fixing base, just the surface and the back of fixing base all are connected with the device bulk phase, the electro-magnet is all installed to the both sides of fixing base, the heating rod is installed to the inner wall of device main part, be provided with the connecting plate through the rotating member in the middle of the inside of device main part.
Through adopting above-mentioned technical scheme, in the use, inside the user passes through the inlet pipe with carbon black and adds the device main part, the user passes through operating panel and starts the heating rod, rotates the motor through operating panel simultaneously with this, and the pivot drives the auger and rotates, alright stir the inside carbon black of device main part for the inside carbon black of device main part is heated evenly, is convenient for carry out drying process to carbon black more.
Further, the dust removal subassembly is including installing in the air exhauster and the dust collection box of device main part one side, the air inlet end of air exhauster is connected with the air-supply line that extends to the dust collection box inside, the inside below of air-supply line is provided with the filter screen, the inside below of device main part is provided with the dust removal storehouse, electric putter is installed to the inside both sides of device main part, the surface in dust removal storehouse is provided with annular storehouse and through-hole respectively, electric putter's one end is connected with sealed piece, top one side of sealed piece is connected with the slider, be connected with the connecting pipe between dust collection box and the annular storehouse.
Through adopting above-mentioned technical scheme, exhaust carbon black falls into the inside in dust removal storehouse behind the drying process, and the user passes through operating panel control air exhauster and operates after that, gives suction of connecting pipe through the air exhauster, and inside the dust in the carbon black passed through the through-hole and inhales annular storehouse, inside the dust rethread connecting pipe gets into the dust collection box, alright collect the dust.
Furthermore, a discharge hole is formed in the middle of the bottom of the dust removal bin, and the sealing block is matched with the discharge hole.
Through adopting above-mentioned technical scheme, in the use, take out the dust in the carbon black through the dust removal storehouse, the user passes through operating panel control electric putter and operates for sealed piece passes through slider and dust removal storehouse sliding connection, thereby the person of facilitating the use passes through the discharge opening with the inside carbon black in dust removal storehouse and discharges.
Furthermore, the two sides of the bottom of the dust removal bin are provided with sliding grooves, and the sealing block is connected with the dust removal bin in a sliding mode through a sliding block.
Through adopting above-mentioned technical scheme, in the use, the user passes through operating panel control electric putter and operates for sealed piece passes through slider and dust removal storehouse sliding connection, thereby the person of facilitating the use passes through the discharge opening with the inside carbon black in dust removal storehouse and discharges, has improved the production quality of negative pole carbon black.
Further, the heating rod is provided with a plurality ofly, and is a plurality of the heating rod equidistance distributes.
Through adopting above-mentioned technical scheme, the user passes through operating panel and starts the heating rod, meanwhile rotate the motor through operating panel, the pivot drives the auger and rotates, alright stir the inside carbon black of device main part, make the inside carbon black of device main part be heated evenly, be convenient for carry out drying process to carbon black more, after carbon black drying process had been accomplished, the user controls the electro-magnet through using operating panel, close the electro-magnet, make the connecting plate take place to rotate through rotating member and device main part, alright discharge the carbon black after the drying process.
Further, the bottom of base is fixed with a plurality of supporting legs, and is a plurality of the supporting leg is rectangle array form and distributes, top one side of device main part is connected with the inlet pipe, the discharge opening has been seted up to the surface below of device main part.
Through adopting above-mentioned technical scheme, play the supporting role to the device main part through a plurality of supporting legss, increase the stability of this kind of device, when using, inside the user adds the device main part with carbon black through the inlet pipe, discharge through the carbon black after the discharge opening will be handled.
Further, the top cross-sectional area of the feeding pipe is larger than the bottom cross-sectional area of the feeding pipe, and the feeding pipe is connected with the device body in a welding mode.
Through adopting above-mentioned technical scheme, when the user in the use, add the carbon black inside the device main part through the inlet pipe, and the top cross sectional area of inlet pipe is greater than the bottom cross sectional area of inlet pipe to convenience of customers adds the carbon black inside this kind of device more.
Furthermore, the operation panel is respectively and electrically connected with the motor, the heating rod, the electromagnet, the exhaust fan and the electric push rod.
Through adopting above-mentioned technical scheme, when the user in the use, can control motor, heating rod, electro-magnet, air exhauster and electric putter through operating panel, alleviateed user's operation burden, improved the work efficiency of the intelligent drying device in this kind of negative pole carbon black production process.
In summary, the invention mainly has the following beneficial effects:
1. the invention uses the motor, the heating rod, the electromagnet, the rotating piece and the connecting plate, when in use, a user adds the carbon black into the device main body through the feeding pipe, the user starts the heating rod through the operation panel, at the same time, the motor is rotated through the operation panel, the rotating shaft drives the auger to rotate, the carbon black in the device main body can be stirred, the carbon black in the device main body is uniformly heated, the carbon black is more conveniently dried, after the carbon black is dried, the user controls the electromagnet through the operation panel, the electromagnet is closed, the connecting plate rotates with the device main body through the rotating piece, the carbon black after the drying treatment can be discharged, after the use, the user starts the electromagnet through the operation panel, the connecting plate is made of iron material, and the connecting plate is adsorbed with the electromagnet, thereby being more convenient for drying the carbon black;
2. according to the invention, through the exhaust fan, the dust collection box, the electric push rod, the sealing block, the sliding block and the through hole, the carbon black discharged after drying treatment falls into the dust collection bin, then the exhaust fan is controlled by the user through the operation panel to operate, the exhaust fan gives a suction force to the connecting pipe, the dust in the carbon black is sucked into the annular bin through the through hole, the dust enters the dust collection box through the connecting pipe, and then the dust can be collected.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic front view of the present invention;
FIG. 3 is a schematic view of the internal structure of the present invention;
FIG. 4 is a schematic view of the dust removing bin structure of the present invention;
FIG. 5 is an enlarged view of the invention at A in FIG. 3;
fig. 6 is an enlarged view of the invention at B in fig. 3.
In the figure: 1. a device main body; 2. a base; 3. a drying assembly; 301. a motor; 302. a rotating shaft; 303. A heating rod; 304. a packing auger; 305. a fixed seat; 306. an electromagnet; 307. a connecting plate; 308. a rotating member; 4. a dust removal assembly; 401. an exhaust fan; 402. an air inlet pipe; 403. a dust collection box; 404. an annular bin; 405. a dust removal bin; 406. a connecting pipe; 407. a through hole; 408. an electric push rod; 409. a slider; 410. A sealing block; 5. a discharge hole; 6. a feed pipe; 7. supporting legs; 8. an operation panel.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
The following describes an embodiment of the present invention based on its overall structure.
An intelligent drying system in the production process of negative carbon black, as shown in fig. 1-4, comprises a device main body 1, a base 2 is connected with the bottom of the device main body 1, a drying component 3 is arranged above the inside of the device main body 1, a motor 301 is rotated through an operation panel 8, a rotary shaft 302 drives an auger 304 to rotate, so that carbon black in the device main body 1 can be stirred, the carbon black in the device main body 1 is uniformly heated, and the carbon black can be dried, a dust removal component 4 is arranged on one side of the device main body 1, a user controls an exhaust fan 401 to operate through the operation panel 8, a suction force is given to a connecting pipe 406 through the exhaust fan 401, dust in the carbon black is sucked into an annular bin 404 through a through hole 407, the dust enters a dust collection box 403 through the connecting pipe 406, the dust can be collected, the operation panel 8 is, operating panel 8 respectively with motor 301, heating rod 303, electro-magnet 306, air exhauster 401 and electric putter 408 electric connection, convenient to use person operates the device, the bottom of base 2 is fixed with a plurality of supporting legs 7, and a plurality of supporting legs 7 are rectangular array form and distribute, top one side of device main part 1 is connected with inlet pipe 6, the top cross sectional area of inlet pipe 6 is greater than the bottom cross sectional area of inlet pipe 6, and inlet pipe 6 and 1 welded connection of device main part, discharge opening 5 has been seted up to the surface below of device main part 1, the user passes through inlet pipe 6 with the carbon black and adds inside the device main part 1.
Referring to fig. 1, 2, 3 and 5, the drying assembly 3 includes a motor 301 installed in the middle of the top of the apparatus main body 1, an output end of the motor 301 is connected with a rotating shaft 302 extending into the apparatus main body 1, an outer surface of the rotating shaft 302 is connected with an auger 304, an output end of the rotating shaft 302 is connected with a fixing base 305, an outer surface and a back of the fixing base 305 are both connected with the apparatus main body 1, two sides of the fixing base 305 are both provided with electromagnets 306, an inner wall of the apparatus main body 1 is provided with a heating rod 303, a connecting plate 307 is arranged in the middle of the inside of the apparatus main body 1 through a rotating member 308, the heating rods 303 are provided with a plurality of heating rods 303, and the plurality of heating rods 303 are distributed at equal intervals, after the carbon black drying process is completed, a user controls the electromagnets 306 by using the operation panel, alright discharge the carbon black after the drying process, use up the back, the user rethread operating panel 8 starts electro-magnet 306, and connecting plate 307 adopts the iron material preparation to form for connecting plate 307 adsorbs mutually with electro-magnet 306, is convenient for carry out drying process to the carbon black.
Referring to fig. 2, 3, 4 and 6, the dust removing assembly 4 includes an exhaust fan 401 and a dust collecting box 403 installed at one side of the device main body 1, an air inlet end of the exhaust fan 401 is connected with an air inlet pipe 402 extending to the inside of the dust collecting box 403, a filter screen is arranged below the inside of the air inlet pipe 402, a dust removing bin 405 is arranged below the inside of the device main body 1, electric push rods 408 are installed at two sides of the inside of the device main body 1, an annular bin 404 and through holes 407 are respectively arranged on the outer surface of the dust removing bin 405, one end of the electric push rod 408 is connected with a sealing block 410, a sliding block 409 is connected at one side of the top of the sealing block 410, a connecting pipe 406 is connected between the dust collecting box 403 and the annular bin 404, a discharge hole is formed in the middle of the bottom of the dust removing bin 405, the sealing block 410 is adapted to the discharge hole, discharged carbon black falls into the inside in dust removal storehouse 405 after the drying process, then the user operates through operating panel 8 control air exhauster 401, give suction of connecting pipe 406 through air exhauster 401, the dust in the carbon black is inhaled inside annular storehouse 404 through-hole 407, the dust rethread connecting pipe 406 gets into inside dust collection box 403, alright collect the dust, when air exhauster 401 is using, can prevent through the inside filter screen of air-supply line 402 that the dust from inhaling inside air exhauster 401, prevent that air exhauster 401 from damaging, afterwards, the user operates through operating panel 8 control electric putter 408, make sealed piece 410 pass through slider and dust removal storehouse 405 sliding connection, thereby the person of facilitating the use discharges the inside carbon black in dust removal storehouse 405 through discharge opening 5.
The implementation principle of the embodiment is as follows: firstly, a user places the device on a horizontal plane, in the using process, the user adds carbon black into the device main body 1 through the feeding pipe 6, the user starts the heating rod 303 through the operation panel 8, meanwhile, the motor 301 rotates through the operation panel 8, the rotating shaft 302 drives the packing auger 304 to rotate, and then the carbon black in the device main body 1 can be stirred, so that the carbon black in the device main body 1 is uniformly heated, and then the carbon black can be dried, after the carbon black is dried, the user controls the electromagnet 306 through the operation panel 8, closes the electromagnet 306, so that the connecting plate 307 rotates with the device main body 1 through the rotating piece 308, and then the dried carbon black can be discharged, after the use, the user starts the electromagnet 306 through the operation panel 8, and the connecting plate 307 is made of iron material, make connecting plate 307 adsorb mutually with electro-magnet 306, be convenient for carry out drying process to carbon black, exhaust carbon black falls into the inside of dust removal storehouse 405 after the drying process, then the user operates through operating panel 8 control air exhauster 401, give a suction through air exhauster 401 and connecting pipe 406, with the dust in the carbon black through inside through-hole 407 suction annular storehouse 404, the dust rethread connecting pipe 406 gets into inside dust collection box 403, alright collect the dust, when air exhauster 401 is using, can prevent through the inside filter screen of air-supply line 402 that the dust from inhaling inside air exhauster 401, prevent that air exhauster 401 from damaging, afterwards, the user operates through operating panel 8 control electric putter 408, make sealed piece 410 pass through slider and dust removal storehouse 405 sliding connection, thereby the person of facilitating the use discharges the inside carbon black of dust removal storehouse 405 through discharge opening 5.
Although embodiments of the present invention have been shown and described, it is intended that the present invention should not be limited thereto, that the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples, and that modifications, substitutions, variations or the like, which are not inventive and may be made by those skilled in the art without departing from the principle and spirit of the present invention and without departing from the scope of the claims.

Claims (9)

1. The utility model provides an intelligent drying system in negative pole carbon black production process, includes device main part (1), its characterized in that: the device is characterized in that a base (2) is connected to the bottom of the device main body (1), a drying component (3) is arranged above the interior of the device main body (1), a dust removal component (4) is arranged on one side of the device main body (1), and an operation panel (8) is arranged on the outer surface of the base (2).
2. The intelligent drying system in the production process of the negative electrode carbon black, according to claim 1, is characterized in that: drying assembly (3) is including installing motor (301) in the middle of device main part (1) top, the output of motor (301) is connected with and extends to inside pivot (302) of device main part (1), the surface of pivot (302) is connected with auger (304), the output of pivot (302) is connected with fixing base (305), just the surface and the back of fixing base (305) all are connected with device main part (1), electro-magnet (306) are all installed to the both sides of fixing base (305), heating rod (303) are installed to the inner wall of device main part (1), be provided with connecting plate (307) through rotating member (308) in the middle of the inside of device main part (1).
3. The intelligent drying system in the production process of the negative electrode carbon black, according to claim 1, is characterized in that: dust removal subassembly (4) are including installing in air exhauster (401) and dust collection box (403) of device main part (1) one side, the air inlet end of air exhauster (401) is connected with air-supply line (402) that extend to dust collection box (403) inside, the inside below of air-supply line (402) is provided with the filter screen, the inside below of device main part (1) is provided with dust removal storehouse (405), electric putter (408) are installed to the inside both sides of device main part (1), the surface in dust removal storehouse (405) is provided with annular storehouse (404) and through-hole (407) respectively, the one end of electric putter (408) is connected with sealed piece (410), top one side of sealed piece (410) is connected with slider (409), be connected with connecting pipe (406) between dust collection box (403) and annular storehouse (404).
4. The intelligent drying system in the production process of the negative electrode carbon black, according to claim 3, is characterized in that: a discharge hole is formed in the middle of the bottom of the dust removing bin (405), and the sealing block (410) is matched with the discharge hole.
5. The intelligent drying system in the production process of the negative electrode carbon black, according to claim 3, is characterized in that: the dust removal device is characterized in that sliding grooves are formed in two sides of the bottom of the dust removal bin (405), and the sealing block (410) is connected with the dust removal bin (405) in a sliding mode through a sliding block (409).
6. The intelligent drying system in the production process of the negative electrode carbon black, according to claim 2, is characterized in that: the heating rod (303) is provided with a plurality of, and is a plurality of heating rod (303) equidistance distributes.
7. The intelligent drying system in the production process of the negative electrode carbon black, according to claim 1, is characterized in that: the bottom of base (2) is fixed with a plurality of supporting legs (7), and is a plurality of supporting leg (7) are rectangular array form and distribute, top one side of device main part (1) is connected with inlet pipe (6), discharge opening (5) have been seted up to the surface below of device main part (1).
8. The intelligent drying system in the production process of the negative electrode carbon black, according to claim 7, is characterized in that: the top cross-sectional area of inlet pipe (6) is greater than the bottom cross-sectional area of inlet pipe (6), just inlet pipe (6) and device main part (1) welded connection.
9. The intelligent drying system in the production process of the negative electrode carbon black, according to claim 1, is characterized in that: the operation panel (8) is respectively and electrically connected with the motor (301), the heating rod (303), the electromagnet (306), the exhaust fan (401) and the electric push rod (408).
CN202110433980.4A 2021-04-22 2021-04-22 Intelligent drying system in negative carbon black production process Pending CN113028778A (en)

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Application Number Priority Date Filing Date Title
CN202110433980.4A CN113028778A (en) 2021-04-22 2021-04-22 Intelligent drying system in negative carbon black production process

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Application Number Priority Date Filing Date Title
CN202110433980.4A CN113028778A (en) 2021-04-22 2021-04-22 Intelligent drying system in negative carbon black production process

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Publication Number Publication Date
CN113028778A true CN113028778A (en) 2021-06-25

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN206626915U (en) * 2017-03-15 2017-11-10 天津市兰依科技股份有限公司 A kind of improved potash fertilizer drying equipment
KR101838618B1 (en) * 2017-11-28 2018-03-14 (주)대성이에스 Dryer for prefabricated agricultural products
CN208579609U (en) * 2018-07-12 2019-03-05 广东石油化工学院 A kind of Chemical Manufacture drying unit
CN110470113A (en) * 2019-07-30 2019-11-19 徐州市龙头山酿造有限公司 A kind of sesame oil production drains equipment with sesame
CN210320980U (en) * 2019-08-08 2020-04-14 湖北省宇涛特种纤维股份有限公司 Chemical fiber spinning raw material drying equipment
CN211854719U (en) * 2020-01-20 2020-11-03 和牧电子商务(上海)有限公司 Heated air circulation's fodder desiccator

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN206626915U (en) * 2017-03-15 2017-11-10 天津市兰依科技股份有限公司 A kind of improved potash fertilizer drying equipment
KR101838618B1 (en) * 2017-11-28 2018-03-14 (주)대성이에스 Dryer for prefabricated agricultural products
CN208579609U (en) * 2018-07-12 2019-03-05 广东石油化工学院 A kind of Chemical Manufacture drying unit
CN110470113A (en) * 2019-07-30 2019-11-19 徐州市龙头山酿造有限公司 A kind of sesame oil production drains equipment with sesame
CN210320980U (en) * 2019-08-08 2020-04-14 湖北省宇涛特种纤维股份有限公司 Chemical fiber spinning raw material drying equipment
CN211854719U (en) * 2020-01-20 2020-11-03 和牧电子商务(上海)有限公司 Heated air circulation's fodder desiccator

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Application publication date: 20210625

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