CN113551487A - Imidacloprid secondary powder rapid conveying and processing equipment and method - Google Patents

Imidacloprid secondary powder rapid conveying and processing equipment and method Download PDF

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Publication number
CN113551487A
CN113551487A CN202111095640.1A CN202111095640A CN113551487A CN 113551487 A CN113551487 A CN 113551487A CN 202111095640 A CN202111095640 A CN 202111095640A CN 113551487 A CN113551487 A CN 113551487A
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CN
China
Prior art keywords
drying
pipe
imidacloprid
drying box
vacuum
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CN202111095640.1A
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CN113551487B (en
Inventor
顾建东
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Jiangsu Yongjia Drying Technology Co Ltd
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Jiangsu Yongjia Drying Technology Co Ltd
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Publication of CN113551487A publication Critical patent/CN113551487A/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B5/00Drying solid materials or objects by processes not involving the application of heat
    • F26B5/04Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
    • 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
    • F26B11/16Machines 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 vertical or steeply-inclined plane
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B23/00Heating arrangements
    • 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
    • F26B25/22Controlling the drying process in dependence on liquid content of solid materials or objects

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

Abstract

The invention relates to the technical field of imidacloprid secondary powder drying, in particular to an imidacloprid secondary powder rapid conveying and processing device and a method, which comprises a drying box and a mounting rack, wherein the drying box is mounted on the mounting rack, the bottom of the mounting rack is provided with supporting legs, a drying cavity is arranged in the drying box, a heat conduction pipe and a rotating shaft are arranged in the drying cavity, a plurality of drying targets are arranged on the heat conduction pipe, and a plurality of rotating rods are arranged on the rotating shaft. Solves the problem of long retention time and easy melting time of the materials.

Description

Imidacloprid secondary powder rapid conveying and processing equipment and method
Technical Field
The invention relates to the technical field of imidacloprid secondary powder drying, in particular to equipment and a method for quickly conveying and processing imidacloprid secondary powder.
Background
Imidacloprid secondary powder is inevitably produced in imidacloprid production, because the wet imidacloprid secondary powder has low content, large moisture, more impurities, high viscosity, poor thermal stability and easy thermal decomposition, the conventional drying mode cannot be used for drying at low temperature, and the secondary powder is completely melted and decomposed by heating and cannot be cleaned, and a plurality of tests are not successful, a double-cone dryer is used for negative pressure temperature rise drying in the later period, although the drying problem is solved, the method has a plurality of problems, firstly the imidacloprid secondary powder wet product is obtained after centrifugation, white carbon black is added to the ground for manual mixing after manual transportation, the materials are fully mixed and then are crushed by a universal crusher, the crushed materials are put into the double-cone dryer again for drying by means of hot water temperature rise and negative pressure dehydration, whole imidacloprid secondary powder stoving process needs artifical turnover many times, and the product exposes in the air for a long time, and not only staff's work degree is big, and on-the-spot dust is graceful serious moreover, and production environmental pollution is serious, and the turnover in-process also brings impurity into simultaneously easily, very big influence product quality.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides equipment and a method for quickly conveying and processing imidacloprid secondary powder, which have strong heat sensitivity and easily-melted materials.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: a quick conveying and processing device for imidacloprid secondary powder comprises a drying box and a mounting rack, wherein the drying box is mounted on the mounting rack, supporting legs are arranged at the bottom of the mounting rack, a drying cavity is arranged inside the drying box, a heat conduction pipe and a rotating shaft are arranged in the drying cavity, a plurality of drying targets are arranged on the heat conduction pipe, a plurality of rotating rods are arranged on the rotating shaft, the heat conduction pipe and the rotating shaft penetrate through the drying box, the heat conduction pipe, the rotating shaft and the drying box are connected through bearings, a heater is arranged on the drying box and communicated with the heat conduction pipe, a bearing is arranged at the joint of the heat conduction pipe and the heater, a liquid injection port is arranged on the heater, a driving motor is arranged on the mounting rack and connected with the rotating shaft, a vacuum dehumidifying pipe is arranged at the top of the drying box and communicated with the drying box, and a vacuum dehumidifying port and a vacuum meter are arranged on the vacuum dehumidifying pipe, the utility model discloses a drying cabinet, including drying cabinet, air pump, air exhaust pump, blast pipe, the top of drying cabinet still is equipped with hygrometer and vacuum feeding pipe, be equipped with control flap on the vacuum feeding pipe, be equipped with the air exhaust pump on the drying cabinet, be equipped with the blast pipe on the air exhaust pump, the air exhaust pump passes through second air duct and first air duct and drying cabinet intercommunication, the second air duct is equipped with the fourth connecting valve with the junction of air exhaust pump, first air duct is the multistage formula setting, and the concatenation department of first air duct of multistage air exhaust pipe is equipped with the third connecting valve, the blast pipe is the multistage formula setting, and the concatenation department of multistage blast pipe is equipped with the second connecting valve, the bottom of drying cabinet is equipped with the bin outlet, bin outlet and drying cabinet intercommunication, and run through the mounting bracket.
In order to improve the stability of the rotating shaft, the invention improves that the driving motor is connected with the rotating shaft through a speed reducing motor.
In order to improve the drying effect, the drying oven is improved in that a heating layer is arranged in the drying oven, the heating layer is positioned on the outer side of the drying cavity, the heating machine is communicated with the heating layer through a water guide pipe, a driving shaft is arranged on the heat guide pipe, and the driving shaft is used for being connected with a rotating motor.
In order to facilitate the detection of the temperature in the drying cavity, the invention has the improvement that the bottom of the drying box is provided with a thermometer, the thermometer is communicated with the drying box through a temperature measuring pipe, and a first connecting valve is arranged at the joint of the temperature measuring pipe and the thermometer.
In order to facilitate observation of the working state in the drying cavity, the invention is improved in that an observation sight glass is arranged on the drying box, and a base is arranged at the bottom of the supporting leg and is of a rectangular structure.
A rapid conveying and processing method for imidacloprid secondary powder comprises the following steps:
opening a control valve to charge materials into a drying cavity through a vacuum feeding pipe, starting a driving motor, and starting a rotating shaft to rotate for half an hour in a balanced manner;
step two, starting an air suction pump and an exhaust valve, and enabling the interior of the drying box to reach a set vacuum degree;
starting a heating machine, heating the heating layer, the heat conduction pipe and the drying target, further drying the materials, and discharging steam outwards through the vacuum dehumidifying pipe and the vacuum dehumidifying port until the moisture of the imidacloprid secondary powder measured by the hygrometer and the thermometer and the temperature of the drying cavity reach set values;
step four, closing the heating machine, opening the exhaust valve, driving the motor to continue to operate, and preparing for unloading;
and step five, closing the driving electricity, opening a discharge port, and enabling the materials to enter a mixing kettle.
In order to further improve the drying effect, the invention improves that the charging coefficient in the drying cavity does not exceed 70% of the volume.
(III) advantageous effects
Compared with the prior art, the invention provides equipment and a method for quickly conveying and treating imidacloprid secondary powder, which have the following beneficial effects:
the invention has strong heat sensitivity, the material is easy to melt, the retention time of the material is prolonged by utilizing the rapid drying method, the long-time contact between the material and heat energy is reduced, the material is rapidly dried in the conveying process, the material is circulated in the equipment by adopting a material stirring mode and a drying target rotating mode, the heat energy is rapidly dispersed in a drying cavity, the equipment is operated in a vacuum negative pressure state, the material is directly contacted with the heat energy, the heating area is large, the drying time is shortened, the heating area is increased by 3-5 times compared with that of a vacuum rotary dryer and a vacuum rake dryer, the material is wrapped by the heat energy when running in the equipment, the moisture can be rapidly evaporated, and the problem of long retention time and easy melting time of the material is solved.
Drawings
FIG. 1 is a schematic inside view of the present invention;
FIG. 2 is a schematic structural view of the present invention;
in the figure: 1. a drying oven; 2. a mounting frame; 3. supporting legs; 4. a drive motor; 5. a reduction motor; 6. a vacuum dehumidifying pipe; 7. a heat conducting pipe; 8. drying the target; 9. a rotating shaft; 10. rotating the rod; 11. a discharge outlet; 12. a humidity meter; 13. a thermometer; 14. a temperature measuring tube; 15. a vacuum gauge; 16. a vacuum dehumidifying port; 17. a vacuum feeding pipe; 18. an observation sight glass; 19. a drive shaft; 20. a heating layer; 21. an exhaust valve; 22. an air pump; 23. a first connecting valve; 24. a first air duct; 25. an exhaust pipe; 26. a second connecting valve; 27. a second air duct; 28. a third connecting valve; 29. a fourth connecting valve; 30. a heater.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, the invention is an imidacloprid secondary powder rapid conveying and processing device, which comprises a drying box 1 and a mounting frame 2, wherein the drying box 1 is mounted on the mounting frame 2, the bottom of the mounting frame 2 is provided with supporting legs 3, a drying cavity is arranged inside the drying box 1, a heat conduction pipe 7 and a rotating shaft 9 are arranged in the drying cavity, a plurality of drying targets 8 are arranged on the heat conduction pipe 7, a plurality of rotating rods 10 are arranged on the rotating shaft 9, the heat conduction pipe 7 and the rotating shaft 9 penetrate through the drying box 1, the heat conduction pipe 7 and the rotating shaft 9 are connected with the drying box 1 through bearings, a heater 30 is arranged on the drying box 1, the heater 30 is communicated with the heat conduction pipe 7, a bearing is arranged at the joint of the heat conduction pipe 7 and the heater 30, a liquid injection port is arranged on the heater 30, a driving motor 4 is arranged on the mounting frame 2, and the driving motor 4 is connected with the rotating shaft 9, the drying cabinet is characterized in that a vacuum dehumidifying pipe 6 is arranged at the top of the drying cabinet 1, the vacuum dehumidifying pipe 6 is communicated with the drying cabinet 1, a vacuum dehumidifying port 16 and a vacuum meter 15 are arranged on the vacuum dehumidifying pipe 6, a hygrometer 12 and a vacuum feeding pipe 17 are further arranged at the top of the drying cabinet 1, a control valve is arranged on the vacuum feeding pipe 17, an air pump 22 is arranged on the drying cabinet 1, an exhaust pipe 25 is arranged on the air pump 22, the air pump 22 is communicated with the drying cabinet 1 through a second air duct 27 and a first air duct 24, a fourth connecting valve 29 is arranged at the joint of the second air duct 27 and the air pump 22, the first air duct 24 is arranged in a multi-section manner, a third connecting valve 28 is arranged at the joint of the multi-section first air duct 24 and the joint of the first air duct 24 and the air pump 22, the exhaust pipe 25 is arranged in a multi-section manner, and a second connecting valve 26 is arranged at the joint of the multi-section exhaust pipe 25, the bottom of drying cabinet 1 is equipped with bin outlet 11, bin outlet 11 and drying cabinet 1 intercommunication, and run through mounting bracket 2.
Example one
The driving motor 4 is connected with the rotating shaft 9 through the speed reducing motor 5, and the stability of the rotating shaft 9 is improved.
Example two
Be equipped with zone of heating 20 in drying cabinet 1, zone of heating 20 is located the drying chamber outside, communicate through the aqueduct between heater 30 and the zone of heating 20, be equipped with drive shaft 19 on the heat pipe 7, drive shaft 19 is used for connecting the rotation motor, rotates heat pipe 7 through zone of heating 20 and rotation motor, makes the heat scatter fast in the drying chamber, and the area of heating once greatly shortens drying time.
EXAMPLE III
The bottom of drying cabinet 1 is equipped with thermometer 13, thermometer 13 passes through temperature measurement pipe 14 and 1 intercommunication of drying cabinet, temperature measurement pipe 14 is equipped with first connecting valve 23 with thermometer 13's junction to conveniently detect the temperature in the drying chamber, improve dry efficiency.
Example four
Be equipped with observation sight glass 18 on drying cabinet 1, the bottom of supporting leg 3 is equipped with the base, the base is the rectangle structure, conveniently observes the operating temperature in the drying chamber through observing sight glass 18, improves the stability of the support of supporting leg 3 through the base.
A rapid conveying and processing method for imidacloprid secondary powder comprises the following steps:
step one, opening a control valve to charge materials into a drying cavity through a vacuum feeding pipe 17, starting a driving motor 4, and starting a rotating shaft 9 in a balanced mode and rotating for half an hour;
step two, starting the air suction pump 22 and the exhaust valve 21, and enabling the interior of the drying box 1 to reach a set vacuum degree;
step three, starting the heating machine 30, heating the heating layer 20, the heat conduction pipe 7 and the drying target 8, further drying the materials, and discharging steam outwards through the vacuum dehumidifying pipe 6 and the vacuum dehumidifying port 16 until the moisture of the imidacloprid secondary powder measured by the hygrometer 12 and the thermometer 13 and the temperature of the drying cavity reach set values;
step four, closing the heating machine 30, opening the exhaust valve 21, driving the motor 4 to continue to operate and preparing for unloading;
step five, closing the driving electricity, opening the discharge port 11, and enabling the materials to enter the mixing kettle.
EXAMPLE five
The charging coefficient in the drying cavity does not exceed 70% of the volume, and the charging coefficient is controlled, so that the drying cavity ensures enough heat conduction circulation space, and the drying performance is further improved.
To sum up, the equipment and the method for rapidly conveying and processing the imidacloprid secondary powder have the advantages that when in use, the heat sensitivity is strong, the materials are easy to melt, the retention time of the materials is prolonged by utilizing a rapid drying method, the long-time contact between the materials and heat energy is reduced, the materials are rapidly dried, the materials are circulated in the equipment by adopting a material stirring mode and a drying target 8 rotating mode, the heat energy is rapidly dispersed in a drying cavity, the equipment runs in a vacuum negative pressure state, the materials are directly contacted with the heat energy, the heating area is large, the drying time is shortened, the heating area is increased by 3-5 times compared with that of a vacuum rotary dryer and a vacuum rake dryer, the materials are wrapped by the heat energy during the running in the equipment, the moisture can be rapidly evaporated, the retention time of the materials is long and easy to melt, the heating temperature is below 60 ℃, the temperature of the materials is controlled below 40 ℃, the top end of the equipment is connected with a dust removal device and a pulse device, the vacuum material suction device has the following heat sources: hot water, heat conducting oil and steam.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. The fast imidacloprid secondary powder conveying and processing equipment is characterized by comprising a drying box (1) and a mounting rack (2), wherein the drying box (1) is mounted on the mounting rack (2), supporting legs (3) are arranged at the bottom of the mounting rack (2), a drying cavity is arranged inside the drying box (1), a heat conduction pipe (7) and a rotating shaft (9) are arranged in the drying cavity, a plurality of drying targets (8) are arranged on the heat conduction pipe (7), a plurality of rotating rods (10) are arranged on the rotating shaft (9), the heat conduction pipe (7) and the rotating shaft (9) penetrate through the drying box (1), the heat conduction pipe (7) and the rotating shaft (9) are connected with the drying box (1) through bearings, a heater (30) is arranged on the drying box (1), the heater (30) is communicated with the heat conduction pipe (7), and a bearing is arranged at the joint of the heat conduction pipe (7) and the heater (30), the drying machine is characterized in that a liquid injection port is formed in the heating machine (30), a driving motor (4) is arranged on the mounting frame (2), the driving motor (4) is connected with the rotating shaft (9), a vacuum dehumidifying pipe (6) is arranged at the top of the drying box (1), the vacuum dehumidifying pipe (6) is communicated with the drying box (1), a vacuum dehumidifying port (16) and a vacuum meter (15) are arranged on the vacuum dehumidifying pipe (6), a hygrometer (12) and a vacuum feeding pipe (17) are further arranged at the top of the drying box (1), a control valve is arranged on the vacuum feeding pipe (17), an air suction pump (22) is arranged on the drying box (1), an exhaust pipe (25) is arranged on the air suction pump (22), the air suction pump (22) is communicated with the drying box (1) through a second air guide pipe (27) and a first air guide pipe (24), a fourth connecting valve (29) is arranged at the joint of the second air guide pipe (27) and the air suction pump (22), first air duct (24) set up for the multistage formula, and the concatenation department of the first air duct of multistage (24) and first air duct (24) and the concatenation department of aspiration pump (22) are equipped with third connecting valve (28), blast pipe (25) set up for the multistage formula, and the concatenation department of multistage blast pipe (25) is equipped with second connecting valve (26), the bottom of drying cabinet (1) is equipped with bin outlet (11), bin outlet (11) and drying cabinet (1) intercommunication, and run through mounting bracket (2).
2. The imidacloprid secondary powder rapid conveying and processing equipment as claimed in claim 1, characterized in that the driving motor (4) is connected with the rotating shaft (9) through a speed reducing motor (5).
3. The fast imidacloprid secondary powder conveying and processing equipment as claimed in claim 1, characterized in that a heating layer (20) is arranged in the drying oven (1), the heating layer (20) is positioned outside the drying chamber, the heating machine (30) is communicated with the heating layer (20) through a water conduit, a driving shaft (19) is arranged on the heat conducting pipe (7), and the driving shaft (19) is used for connecting a rotating motor.
4. The imidacloprid secondary powder rapid conveying and processing equipment as claimed in claim 1, characterized in that a thermometer (13) is arranged at the bottom of the drying oven (1), the thermometer (13) is communicated with the drying oven (1) through a temperature measuring tube (14), and a first connecting valve (23) is arranged at the joint of the temperature measuring tube (14) and the thermometer (13).
5. The imidacloprid secondary powder rapid conveying and processing equipment as claimed in claim 1, characterized in that an observation sight glass (18) is arranged on the drying oven (1), and a base is arranged at the bottom of the supporting leg (3), wherein the base is of a rectangular structure.
6. A rapid imidacloprid secondary powder conveying and processing method is characterized by comprising the following steps:
step one, opening a control valve to charge materials into a drying cavity through a vacuum feeding pipe (17), starting a driving motor (4), and starting a rotating shaft (9) in a balanced mode and rotating for half an hour;
step two, starting the air suction pump (22) and the exhaust valve (21) to reach a set vacuum degree in the drying box (1);
step three, starting a heating machine (30), heating the heating layer (20), the heat conduction pipe (7) and the drying target (8), further drying the materials, and discharging steam outwards through a vacuum dehumidifying pipe (6) and a vacuum dehumidifying port (16) until the moisture of the imidacloprid secondary powder measured by a hygrometer (12) and a thermometer (13) and the temperature of a drying cavity reach set values;
step four, closing the heating machine (30), opening the exhaust valve (21), driving the motor (4) to continue to operate and preparing for unloading;
and step five, closing the driving motor (4), opening the discharge port (11), and feeding the materials into the mixing kettle.
7. The method for rapidly conveying and processing the imidacloprid secondary powder as claimed in claim 6, wherein the charging coefficient in the drying cavity is not more than 70% of the volume.
CN202111095640.1A 2021-09-18 2021-09-18 Imidacloprid secondary powder rapid conveying and processing equipment and method Active CN113551487B (en)

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CN202111095640.1A CN113551487B (en) 2021-09-18 2021-09-18 Imidacloprid secondary powder rapid conveying and processing equipment and method

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CN202111095640.1A CN113551487B (en) 2021-09-18 2021-09-18 Imidacloprid secondary powder rapid conveying and processing equipment and method

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CN113551487B CN113551487B (en) 2021-12-17

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101216242A (en) * 2007-12-28 2008-07-09 青海洁神食品垃圾处理产业有限公司 Kitchen garbage drying device and method
CN102364276A (en) * 2011-08-29 2012-02-29 许建庄 Hot-shaft mixing drying process and device
CN103591779A (en) * 2013-11-20 2014-02-19 韩旭新 Brown coal pipe drier
CN204388506U (en) * 2014-12-17 2015-06-10 重庆金山通用机械制造有限公司 Twin-shaft paddle dryer
CN205020158U (en) * 2015-07-15 2016-02-10 傅映霞 Dry stirring rubbing crusher
CN206269534U (en) * 2016-12-09 2017-06-20 苏州龙峰钛镍设备有限公司 A kind of titanium vacuum rake dryer
CN212006438U (en) * 2020-03-07 2020-11-24 浙江南郊化学有限公司 A drying device for production of benzoylurea insecticides
CN112503860A (en) * 2020-12-01 2021-03-16 吴后梅 Rotary vacuum drying equipment for processing traditional Chinese medicinal materials
CN213931718U (en) * 2020-11-25 2021-08-10 常州鸿石干燥科技有限公司 Vacuum rake dryer

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101216242A (en) * 2007-12-28 2008-07-09 青海洁神食品垃圾处理产业有限公司 Kitchen garbage drying device and method
CN102364276A (en) * 2011-08-29 2012-02-29 许建庄 Hot-shaft mixing drying process and device
CN103591779A (en) * 2013-11-20 2014-02-19 韩旭新 Brown coal pipe drier
CN204388506U (en) * 2014-12-17 2015-06-10 重庆金山通用机械制造有限公司 Twin-shaft paddle dryer
CN205020158U (en) * 2015-07-15 2016-02-10 傅映霞 Dry stirring rubbing crusher
CN206269534U (en) * 2016-12-09 2017-06-20 苏州龙峰钛镍设备有限公司 A kind of titanium vacuum rake dryer
CN212006438U (en) * 2020-03-07 2020-11-24 浙江南郊化学有限公司 A drying device for production of benzoylurea insecticides
CN213931718U (en) * 2020-11-25 2021-08-10 常州鸿石干燥科技有限公司 Vacuum rake dryer
CN112503860A (en) * 2020-12-01 2021-03-16 吴后梅 Rotary vacuum drying equipment for processing traditional Chinese medicinal materials

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Denomination of invention: A rapid conveying and processing equipment and method for imidacloprid secondary powder

Effective date of registration: 20231008

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Pledgee: China Construction Bank Changzhou Tianning sub branch

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