CN113977804A - High-efficient recycling apparatus of plastics based on lead holds in old and useless storage battery - Google Patents

High-efficient recycling apparatus of plastics based on lead holds in old and useless storage battery Download PDF

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Publication number
CN113977804A
CN113977804A CN202111236430.XA CN202111236430A CN113977804A CN 113977804 A CN113977804 A CN 113977804A CN 202111236430 A CN202111236430 A CN 202111236430A CN 113977804 A CN113977804 A CN 113977804A
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CN
China
Prior art keywords
primary
treatment box
drying
hot air
plastics
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
Application number
CN202111236430.XA
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Chinese (zh)
Inventor
应允峰
魏允有
朱庆勇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ANHUI HUAXIN LEAD INDUSTRY GROUP CO LTD
Original Assignee
ANHUI HUAXIN LEAD INDUSTRY GROUP CO LTD
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ANHUI HUAXIN LEAD INDUSTRY GROUP CO LTD filed Critical ANHUI HUAXIN LEAD INDUSTRY GROUP CO LTD
Priority to CN202111236430.XA priority Critical patent/CN113977804A/en
Publication of CN113977804A publication Critical patent/CN113977804A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/04—Disintegrating plastics, e.g. by milling
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/54—Reclaiming serviceable parts of waste accumulators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/04—Disintegrating plastics, e.g. by milling
    • B29B2017/0424—Specific disintegrating techniques; devices therefor
    • B29B2017/0484—Grinding tools, roller mills or disc mills
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/84—Recycling of batteries or fuel cells

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Processing Of Solid Wastes (AREA)
  • Crushing And Pulverization Processes (AREA)

Abstract

The invention provides a device for efficiently recycling and reusing plastic in a lead storage waste battery, which comprises a primary treatment box, wherein a primary crushing mechanism is arranged in the primary treatment box, a drying hopper with a small upper part and a large lower part is integrally formed at the lower end of the primary treatment box, a secondary treatment box is integrally formed at the lower end of the drying hopper, and a secondary crushing mechanism is arranged in the secondary treatment box; a plurality of vent pipes are arranged in the drying hopper in parallel at intervals, and a hot air supply mechanism which is in conduction connection with each vent pipe is arranged outside the drying hopper; a plurality of scattering cones are arranged at the top of each vent pipe at intervals along the horizontal direction, and a plurality of hot air injection holes are arranged at two sides of the bottom of each vent pipe at intervals along the length direction; the invention can avoid the accumulation of plastics, so that the plastics can be fully contacted with hot air, the drying is uniform, the drying effect is better, the plastics fall smoothly and are not easy to accumulate at a certain position, the drying is more efficient, and the defect of prolonging the drying time of the plastics by arranging the guide plate is overcome.

Description

High-efficient recycling apparatus of plastics based on lead holds in old and useless storage battery
Technical Field
The invention relates to a plastic recycling device, in particular to an efficient plastic recycling device based on a lead storage waste battery.
Background
When the waste storage battery with lead storage is recycled, the plastic on the storage battery can be separated and recycled, so that the resources are greatly saved, and the pollution to the environment can be reduced. The traditional recovery process is to wash and crush the plastic, and then extrude the plastic by a screw to carry out granulation. Before granulation, in order to ensure the granulation quality and avoid bubbles or cracking of plastic products, the plastic needs to be dried, and the water content of the plastic is reduced.
At present, when plastics are dried, in order to ensure the drying quality, an inclined guide plate is generally arranged in the device, and the plastics slowly slide on the guide plate so as to prolong the time of the plastics passing through the drying device. However, in the use process, the structure is found to have more defects, the working efficiency is lower, the plastic is easy to accumulate on the guide plate, the drying is not uniform, and the using effect is poor.
Disclosure of Invention
The invention aims to provide an efficient recycling device for plastic in a lead storage waste battery so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a high-efficiency recycling device for plastics based on lead-storage waste storage batteries comprises a primary treatment box, wherein the top of the primary treatment box is provided with a feed hopper, a primary crushing mechanism is arranged in the primary treatment box, a drying hopper with a small upper part and a large lower part is integrally formed at the lower end of the primary treatment box, a secondary treatment box is integrally formed at the lower end of the drying hopper, the bottom of the secondary treatment box is provided with a discharge outlet, and a secondary crushing mechanism is arranged in the secondary treatment box;
a plurality of vent pipes are arranged in the drying hopper in parallel at intervals, and a hot air supply mechanism which is in conduction connection with each vent pipe is arranged outside the drying hopper; the top of each vent pipe is provided with a plurality of scattering cones at intervals along the horizontal direction, and the two sides of the bottom of each vent pipe are provided with a plurality of hot air jet holes at intervals along the length direction.
As a further scheme of the invention: the primary crushing mechanism comprises a plurality of primary rotating shafts which are arranged in the primary treatment box in parallel at intervals, primary crushing rollers which are matched with each other are arranged on the primary rotating shafts, and primary driving components which are in linkage connection with the primary rotating shafts are arranged outside the primary treatment box.
As a further scheme of the invention: a plurality of material guide plates are arranged at intervals in the horizontal direction at the upper inner part of the secondary treatment box, each material guide plate is of an inverted V-shaped structure, material baffle plates are arranged on two sides of the upper inner part of the secondary treatment box, and the material guide plates and the material baffle plates are matched with each other to form a plurality of material distributing hoppers with large upper parts and small lower parts;
the secondary crushing mechanism is composed of a plurality of crushing structures which are arranged in the secondary treatment box and correspond to the bottom outlets of the distributing hoppers one by one.
As a further scheme of the invention: the crushing structure comprises a plurality of secondary rotating shafts which are arranged in parallel and at intervals in the secondary processing box and positioned below the outlet at the bottom of the material distributing hopper, secondary crushing rollers which are matched with each other are arranged on the secondary rotating shafts, and secondary driving components which are connected with the secondary rotating shafts in a linkage mode are arranged outside the secondary processing box.
As a further scheme of the invention: the hot air supply mechanism comprises a ventilation hood which is arranged outside the drying hopper and is in conduction connection with each ventilation pipe, and an air heater is in conduction connection with the ventilation hood.
As a further scheme of the invention: the hot air injection holes are obliquely arranged, and the outlets of the hot air injection holes face the upper end of the lower scattering cone.
Compared with the prior art, the invention has the beneficial effects that:
after the structure is adopted, the drying hopper, the vent pipes, the scattering cones and the hot air injection holes are matched with each other, when the plastic drying machine is used, plastic is crushed by the primary crushing mechanism and then enters the drying hopper, the plastic is scattered by the scattering cones, the plastic is dried in the scattering and falling process, the plastic is prevented from being accumulated together, the plastic can be fully contacted with hot air, the drying is uniform, the drying effect is good, the plastic falls smoothly and is not easy to accumulate at a certain position, the drying is more efficient, and the defect that the guide plate is arranged to prolong the drying time of the plastic is overcome.
Drawings
Fig. 1 is a schematic structural diagram of a device for efficiently recycling and reusing plastic in a lead storage waste battery.
Fig. 2 is a schematic structural diagram of the interior of a device for efficiently recycling and reusing plastic in a lead storage waste battery.
Fig. 3 is a partially enlarged schematic view of a portion a in fig. 2.
In the figure: 1. a primary treatment tank; 2. a feed hopper; 3. a primary crushing mechanism; 301. a primary shaft; 302. a primary crushing roller; 303. a primary drive assembly; 4. a drying hopper; 5. a secondary treatment tank; 6. a discharge outlet; 7. a secondary crushing mechanism; 701. a secondary rotating shaft; 702. a secondary crushing roller; 703. a secondary drive assembly; 8. a breather pipe; 9. a hot air supply mechanism; 901. a ventilation hood; 902. a hot air blower; 10. breaking up the cone; 11. a hot air injection hole; 12. a material guide plate; 13. a striker plate; 14. a distributing hopper.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
Referring to fig. 1-3, an efficient recycling device for plastics based on lead-storage waste batteries comprises a primary treatment tank 1, wherein a feed hopper 2 is arranged at the top of the primary treatment tank 1, a primary crushing mechanism 3 is arranged in the primary treatment tank 1, a drying hopper 4 with a small upper part and a large lower part is integrally formed at the lower end of the primary treatment tank 1, a secondary treatment tank 5 is integrally formed at the lower end of the drying hopper 4, a discharge outlet 6 is arranged at the bottom of the secondary treatment tank 5, and a secondary crushing mechanism 7 is arranged in the secondary treatment tank 5; the plastic material falls freely, is processed by the primary crushing mechanism 3, the drying mechanism and the secondary crushing mechanism 7 in this order, and is discharged. A plurality of vent pipes 8 are arranged in the drying hopper 4 in parallel at intervals, and a hot air supply mechanism 9 which is communicated and connected with each vent pipe 8 is arranged outside the drying hopper 4; a plurality of scattering cones 10 are arranged at the top of each vent pipe 8 at intervals along the horizontal direction, and a plurality of hot air injection holes 11 are arranged at two sides of the bottom of each vent pipe 8 at intervals along the length direction. Through the dry 4 of fighting that sets up, each breather pipe 8, each breaks up mutually supporting of awl 10 and hot-blast jet orifice 11, when using, plastics get into in the dry 4 of fighting after 3 broken elementary crushing mechanism, break up awl 10 again and break up, plastics are being broken up the in-process that drops and are dried, avoid plastics to pile up together, make plastics can be abundant with hot-blast contact, the drying is even, the drying effect is better, and plastics drop smoothly, be difficult for piling up somewhere, it is more high-efficient to dry, the drawback that the guide plate that has solved and set up extension plastics drying time existence.
The primary crushing mechanism 3 comprises a plurality of primary rotating shafts 301 which are arranged in the primary treatment box 1 in parallel at intervals, primary crushing rollers 302 which are matched with each other are arranged on the primary rotating shafts 301, and a primary driving assembly 303 which is in linkage connection with the primary rotating shafts 301 is arranged outside the primary treatment box 1. Through the mutual cooperation of the primary rotating shaft 301, the primary crushing roller 302 and the primary driving assembly 303, the plastic can be subjected to primary crushing.
Further, a plurality of material guide plates 12 are arranged at intervals in the horizontal direction at the inner upper part of the secondary treatment box 5, each material guide plate 12 is of an inverted V-shaped structure, material baffle plates 13 are arranged on two sides of the inner upper part of the secondary treatment box 5, and the material guide plates 12 and the material baffle plates 13 are matched with each other to form a plurality of material distributing hoppers 14 with large upper parts and small lower parts; the secondary crushing mechanism 7 is composed of a plurality of crushing structures which are arranged in the secondary treatment box 5 and correspond to the bottom outlets of the distributing hoppers 14 one by one. Through the mutual cooperation of each branch hopper 14 and each crushing structure that sets up, plastics after the drying can shunt, further smash to be convenient for plastics granulation recycle.
Specifically, the crushing structure comprises a plurality of secondary rotating shafts 701 which are arranged in parallel and at intervals in the secondary processing box 5 and are positioned below the outlet at the bottom of the material distributing hopper 14, secondary crushing rollers 702 which are matched with each other are arranged on the secondary rotating shafts 701, and a secondary driving assembly 703 which is in linkage connection with the secondary rotating shafts 701 is arranged outside the secondary processing box 5. Through the mutual cooperation of the secondary rotating shaft 701, the secondary crushing roller 702 and the secondary driving assembly 703, the plastic can be further crushed, and the subsequent granulation is facilitated.
The hot air supply mechanism 9 includes a ventilation cover 901 which is provided outside the drying bucket 4 and is connected to the respective ventilation pipes 8 in a conductive manner, and a hot air blower 902 is connected to the ventilation cover 901 in a conductive manner. Through the cooperation of the ventilation hood 901 and the hot air blower 902, hot air can be supplied into each of the ventilation pipes 8.
Further, hot-blast jet orifice 11 slope sets up, and the export of hot-blast jet orifice 11 breaks up the upper end of awl 10 towards the lower floor, and during the injection hot-blast, can dry plastics, can blow off plastics on the surface of awl 10 that breaks up simultaneously, avoids the plastics adhesion to break up on awl 10.
The working principle of the invention is as follows: when in use, plastics enter the primary treatment box 1 through the feed hopper 2, are crushed by the primary crushing mechanism 3 and then enter the drying hopper 4. The plastic falls freely in the drying hopper 4 and is scattered and shunted by the scattering cones 10, so that the plastic can be fully contacted with hot air for drying, and the drying efficiency is improved. The dried plastic is crushed by the secondary crushing mechanism 7 and then discharged from the discharge opening 6.
Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.

Claims (6)

1. A plastic efficient recycling device based on lead storage waste storage batteries comprises a primary treatment box (1), and is characterized in that a feed hopper (2) is arranged at the top of the primary treatment box (1), a primary crushing mechanism (3) is arranged in the primary treatment box (1), a drying hopper (4) with a small upper part and a large lower part is integrally formed at the lower end of the primary treatment box (1), a secondary treatment box (5) is integrally formed at the lower end of the drying hopper (4), a discharge opening (6) is arranged at the bottom of the secondary treatment box (5), and a secondary crushing mechanism (7) is arranged in the secondary treatment box (5);
a plurality of vent pipes (8) are arranged in the drying hopper (4) in parallel at intervals, and a hot air supply mechanism (9) which is communicated and connected with each vent pipe (8) is arranged outside the drying hopper (4); a plurality of scattering cones (10) are arranged at the top of each vent pipe (8) at intervals along the horizontal direction, and a plurality of hot air jet holes (11) are arranged at two sides of the bottom of each vent pipe (8) at intervals along the length direction.
2. The efficient recycling device for the plastics in the lead storage waste battery jar as claimed in claim 1, wherein the primary crushing mechanism (3) comprises a plurality of primary rotating shafts (301) which are arranged in the primary processing box (1) in parallel and at intervals, primary crushing rollers (302) which are matched with each other are arranged on the primary rotating shafts (301), and primary driving components (303) which are in linkage connection with the primary rotating shafts (301) are arranged outside the primary processing box (1).
3. The efficient recycling device for the plastics in the lead storage waste battery jar according to claim 1, characterized in that a plurality of material guide plates (12) are arranged at intervals along the horizontal direction at the inner upper part of the secondary treatment box (5), each material guide plate (12) is in an inverted V-shaped structure, material baffle plates (13) are arranged at two sides of the inner upper part of the secondary treatment box (5), and each material guide plate (12) and each material baffle plate (13) are matched with each other to form a plurality of material distributing hoppers (14) with large upper parts and small lower parts;
the secondary crushing mechanism (7) is composed of a plurality of crushing structures which are arranged in the secondary treatment box (5) and correspond to the bottom outlets of the distributing hoppers (14) one by one.
4. The efficient recycling device for the plastics in the lead-storage waste battery jar as claimed in claim 3, wherein the crushing structure comprises a plurality of secondary rotating shafts (701) which are arranged in the secondary processing box (5) in parallel and at intervals and are positioned below the outlet at the bottom of the distributing hopper (14), secondary crushing rollers (702) which are mutually matched are arranged on the secondary rotating shafts (701), and a secondary driving assembly (703) which is in linkage connection with the secondary rotating shafts (701) is arranged outside the secondary processing box (5).
5. The efficient recycling device for the plastics in the lead-storage waste battery jar as claimed in claim 1, wherein the hot air supply mechanism (9) comprises a ventilation cover (901) which is arranged outside the drying bucket (4) and is in conduction connection with each ventilation pipe (8), and a hot air blower (902) is in conduction connection with the ventilation cover (901).
6. The device for efficiently recycling and reusing plastic in lead-storage waste battery cells according to claim 1, characterized in that the hot air injection holes (11) are obliquely arranged, and the outlets of the hot air injection holes (11) face the upper end of the lower scattering cone (10).
CN202111236430.XA 2021-10-23 2021-10-23 High-efficient recycling apparatus of plastics based on lead holds in old and useless storage battery Pending CN113977804A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111236430.XA CN113977804A (en) 2021-10-23 2021-10-23 High-efficient recycling apparatus of plastics based on lead holds in old and useless storage battery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111236430.XA CN113977804A (en) 2021-10-23 2021-10-23 High-efficient recycling apparatus of plastics based on lead holds in old and useless storage battery

Publications (1)

Publication Number Publication Date
CN113977804A true CN113977804A (en) 2022-01-28

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CN202111236430.XA Pending CN113977804A (en) 2021-10-23 2021-10-23 High-efficient recycling apparatus of plastics based on lead holds in old and useless storage battery

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005066952A (en) * 2003-08-21 2005-03-17 Daicel Chem Ind Ltd Classification treatment system of plastic mixture
CN205761517U (en) * 2016-06-05 2016-12-07 禄丰天宝磷化工有限公司 A kind of special dispersing device of phosphate fertilizer drying machine
CN209350691U (en) * 2019-01-16 2019-09-06 龙口盛达环保科技有限公司 A kind of sorting screening plant for waste plastic
CN209893814U (en) * 2019-02-25 2020-01-03 浙江钱江伟岸干燥设备有限公司 High-efficient vibrated fluidized bed
CN110640941A (en) * 2019-09-26 2020-01-03 韩山师范学院 Plastic breaker
CN111412738A (en) * 2020-04-15 2020-07-14 武汉谷劲科技有限公司 Agricultural feed drying device
CN212619832U (en) * 2020-04-21 2021-02-26 魏赞华 Vertical drying device of traditional chinese medicine granule
CN213147321U (en) * 2020-10-16 2021-05-07 潘桂根 Grain drying device

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005066952A (en) * 2003-08-21 2005-03-17 Daicel Chem Ind Ltd Classification treatment system of plastic mixture
CN205761517U (en) * 2016-06-05 2016-12-07 禄丰天宝磷化工有限公司 A kind of special dispersing device of phosphate fertilizer drying machine
CN209350691U (en) * 2019-01-16 2019-09-06 龙口盛达环保科技有限公司 A kind of sorting screening plant for waste plastic
CN209893814U (en) * 2019-02-25 2020-01-03 浙江钱江伟岸干燥设备有限公司 High-efficient vibrated fluidized bed
CN110640941A (en) * 2019-09-26 2020-01-03 韩山师范学院 Plastic breaker
CN111412738A (en) * 2020-04-15 2020-07-14 武汉谷劲科技有限公司 Agricultural feed drying device
CN212619832U (en) * 2020-04-21 2021-02-26 魏赞华 Vertical drying device of traditional chinese medicine granule
CN213147321U (en) * 2020-10-16 2021-05-07 潘桂根 Grain drying device

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Application publication date: 20220128