CN117283756A - Method for preparing flame-retardant polyethylene composite material by recycling and modifying and crushing system - Google Patents
Method for preparing flame-retardant polyethylene composite material by recycling and modifying and crushing system Download PDFInfo
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- CN117283756A CN117283756A CN202311268821.9A CN202311268821A CN117283756A CN 117283756 A CN117283756 A CN 117283756A CN 202311268821 A CN202311268821 A CN 202311268821A CN 117283756 A CN117283756 A CN 117283756A
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- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 title claims abstract description 85
- 239000004698 Polyethylene Substances 0.000 title claims abstract description 81
- 239000003063 flame retardant Substances 0.000 title claims abstract description 81
- -1 polyethylene Polymers 0.000 title claims abstract description 81
- 229920000573 polyethylene Polymers 0.000 title claims abstract description 81
- 239000002131 composite material Substances 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000004064 recycling Methods 0.000 title claims description 40
- 238000011084 recovery Methods 0.000 claims abstract description 17
- 229920013716 polyethylene resin Polymers 0.000 claims abstract description 10
- 230000004913 activation Effects 0.000 claims abstract description 9
- 239000011248 coating agent Substances 0.000 claims abstract description 5
- 238000000576 coating method Methods 0.000 claims abstract description 5
- 229920000098 polyolefin Polymers 0.000 claims abstract description 5
- 239000002904 solvent Substances 0.000 claims abstract description 4
- 238000012216 screening Methods 0.000 claims description 72
- 239000000463 material Substances 0.000 claims description 29
- 239000003963 antioxidant agent Substances 0.000 claims description 16
- 230000003078 antioxidant effect Effects 0.000 claims description 16
- 230000005540 biological transmission Effects 0.000 claims description 13
- 238000002156 mixing Methods 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 229920001577 copolymer Polymers 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 7
- 239000000314 lubricant Substances 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 239000006057 Non-nutritive feed additive Substances 0.000 claims description 6
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- 239000012745 toughening agent Substances 0.000 claims description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 4
- 239000003112 inhibitor Substances 0.000 claims description 4
- 239000005995 Aluminium silicate Substances 0.000 claims description 3
- 229920002943 EPDM rubber Polymers 0.000 claims description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 3
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 3
- XYFCBTPGUUZFHI-UHFFFAOYSA-N Phosphine Chemical compound P XYFCBTPGUUZFHI-UHFFFAOYSA-N 0.000 claims description 3
- 239000004113 Sepiolite Substances 0.000 claims description 3
- 235000021355 Stearic acid Nutrition 0.000 claims description 3
- YUWBVKYVJWNVLE-UHFFFAOYSA-N [N].[P] Chemical compound [N].[P] YUWBVKYVJWNVLE-UHFFFAOYSA-N 0.000 claims description 3
- 230000002745 absorbent Effects 0.000 claims description 3
- 239000002250 absorbent Substances 0.000 claims description 3
- 235000012211 aluminium silicate Nutrition 0.000 claims description 3
- HPTYUNKZVDYXLP-UHFFFAOYSA-N aluminum;trihydroxy(trihydroxysilyloxy)silane;hydrate Chemical compound O.[Al].[Al].O[Si](O)(O)O[Si](O)(O)O HPTYUNKZVDYXLP-UHFFFAOYSA-N 0.000 claims description 3
- 229960000892 attapulgite Drugs 0.000 claims description 3
- 230000002902 bimodal effect Effects 0.000 claims description 3
- 229910001593 boehmite Inorganic materials 0.000 claims description 3
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical class O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims description 3
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 229910052621 halloysite Inorganic materials 0.000 claims description 3
- 229910052736 halogen Inorganic materials 0.000 claims description 3
- 150000002367 halogens Chemical class 0.000 claims description 3
- FAHBNUUHRFUEAI-UHFFFAOYSA-M hydroxidooxidoaluminium Chemical compound O[Al]=O FAHBNUUHRFUEAI-UHFFFAOYSA-M 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 238000002329 infrared spectrum Methods 0.000 claims description 3
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 3
- 239000011777 magnesium Substances 0.000 claims description 3
- 229910052749 magnesium Inorganic materials 0.000 claims description 3
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 3
- 229910052625 palygorskite Inorganic materials 0.000 claims description 3
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 claims description 3
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 229910052624 sepiolite Inorganic materials 0.000 claims description 3
- 235000019355 sepiolite Nutrition 0.000 claims description 3
- 239000008117 stearic acid Substances 0.000 claims description 3
- 150000007970 thio esters Chemical class 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 230000035939 shock Effects 0.000 claims 2
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000004048 modification Effects 0.000 abstract description 2
- 238000012986 modification Methods 0.000 abstract description 2
- 239000002245 particle Substances 0.000 description 14
- 239000008187 granular material Substances 0.000 description 13
- 238000010586 diagram Methods 0.000 description 8
- 239000011148 porous material Substances 0.000 description 6
- 238000003756 stirring Methods 0.000 description 4
- 238000013459 approach Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- QLZJUIZVJLSNDD-UHFFFAOYSA-N 2-(2-methylidenebutanoyloxy)ethyl 2-methylidenebutanoate Chemical class CCC(=C)C(=O)OCCOC(=O)C(=C)CC QLZJUIZVJLSNDD-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 229920006244 ethylene-ethyl acrylate Polymers 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- VOZRXNHHFUQHIL-UHFFFAOYSA-N glycidyl methacrylate Chemical compound CC(=C)C(=O)OCC1CO1 VOZRXNHHFUQHIL-UHFFFAOYSA-N 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
Classifications
-
- 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
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/10—Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
- B07B1/50—Cleaning
-
- 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
- B29B17/02—Separating plastics from other materials
-
- 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
- B29B17/0412—Disintegrating plastics, e.g. by milling to large particles, e.g. beads, granules, flakes, slices
-
- 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
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
- B29B9/065—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion under-water, e.g. underwater pelletizers
-
- 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
- B29B2017/0476—Cutting or tearing members, e.g. spiked or toothed cylinders or intermeshing rollers
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Food Science & Technology (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
The invention relates to the technical field of polyethylene recovery, and discloses a method for preparing a flame-retardant polyethylene composite material by recovery and modification and a crushing system. Thirdly, performing surface activation treatment on the flame retardant in a high-speed mixer, controlling the activation rate to be not lower than 95%, and further coating the surface-modified flame retardant with a phase solvent and polyethylene resin. The invention has the beneficial effects that: greatly reduces the production cost, saves energy and reduces emission, and simultaneously carries out high-value utilization on the recovered polyolefin.
Description
Technical Field
The invention relates to the technical field of polyethylene recovery, in particular to a method for preparing a flame-retardant polyethylene composite material by recovery and modification and a crushing system.
Background
The conventional wire and cable sheath layer and insulating layer are made of plastic-based composite materials, after the wire and cable, especially the power cable, are removed after the wire and cable exceed the service life, the replaced cable is recycled, the conductors in the cable can be recycled, the stripped sheath layer and insulating layer are usually burnt as garbage to recycle energy, only a small part of the stripped sheath layer and insulating layer is recycled as low-grade materials after sorting, crushing and cleaning, the low-grade materials are used repeatedly, the low-utilization rate of resources is caused, the performance of the products in repeated use is not ensured, the produced products are easy to produce defective products, even large-area returns are caused, larger waste is caused, the wire and cable sheath layer is not thoroughly crushed in the recycling process, the crushed particles are easy to block the screen mesh, and the screening efficiency is reduced.
Disclosure of Invention
This section is intended to outline some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description summary and in the title of the application, to avoid obscuring the purpose of this section, the description summary and the title of the invention, which should not be used to limit the scope of the invention.
The present invention has been made in view of the above and/or problems associated with the existing methods for recycling, modifying and making flame retardant polyethylene composites.
Therefore, the problem to be solved by the invention is that the stripped sheath layer and insulation layer are usually used as garbage to be incinerated for energy recovery, and only a small part of the stripped sheath layer and insulation layer is reused as low-grade materials after being sorted, crushed and cleaned, so that the low utilization rate of resources is caused, the performance of the product during repeated use cannot be ensured, the produced product is easy to produce inferior products, even large-area returns, and larger waste is caused.
In order to solve the technical problems, the invention provides the following technical scheme: a method for preparing a flame-retardant polyethylene composite material by recycling and modifying comprises the steps of firstly, manually sorting the recycled flame-retardant polyethylene material, and then accurately sorting by an infrared spectrum sorter to ensure that the recycled material is polyethylene and named as recycled raw material.
And secondly, crushing the recovered raw material obtained in the first step through a crushing assembly, controlling the blocks within 5 mm through a screening assembly, performing air separation to remove larger impurities, washing with water, and then filtering, drying and standing by to obtain the recovered polyethylene crushed material.
Thirdly, performing surface activation treatment on the flame retardant in a high-speed mixer, controlling the activation rate to be not lower than 95%, and further coating the surface-modified flame retardant with a compatilizer and polyethylene resin.
And fourthly, extruding the recycled polyethylene crushed materials to a first single-screw extruder unit through a double-screw extruder unit, then to a second single-screw extruder unit, and finally to a mixing mill, wherein the screens of the double-screw extruder and the single-screw extruder are 120 meshes and 150 meshes respectively.
And fifthly, adding the filtered polyethylene return material, the coated flame retardant, the polyethylene resin, the toughening agent, the lubricant, the antioxidant and other processing aids into a mixing mill together, mixing uniformly, granulating by adopting a double-stage extruder unit, granulating by adopting a water ring, and drying at 60-80 ℃ for more than 8 hours to obtain the flame-retardant polyethylene composite material.
As a preferable scheme of the method for preparing the flame-retardant polyethylene composite material by recycling and modifying, the invention comprises the following steps: the crushed material of the flame retardant polyethylene can be recovered from the cable material or other flame retardant polyethylene products used in daily life.
As a preferable scheme of the method for preparing the flame-retardant polyethylene composite material by recycling and modifying, the invention comprises the following steps: the polyethylene resin is at least one of high-density polyolefin, metallocene catalyzed polyethylene and bimodal polyethylene, and the toughening agent is at least one of ethylene-vinyl acetate copolymer, ethylene-propylene copolymer, ethylene-butene copolymer, ethylene-octene copolymer and ethylene propylene diene monomer.
As a preferable scheme of the method for preparing the flame-retardant polyethylene composite material by recycling and modifying, the invention comprises the following steps: the flame retardant is at least one of coated red phosphorus or red phosphorus master batch, antimonous oxide, halogen flame retardant, phosphorus nitrogen flame retardant, magnesium flame retardant, carbon flame retardant and auxiliary flame retardant with carbon forming function (including but not limited to nano kaolin, attapulgite, organized modified montmorillonite, halloysite, sepiolite, boehmite and the like).
As a preferable scheme of the method for preparing the flame-retardant polyethylene composite material by recycling and modifying, the invention comprises the following steps: the lubricant is at least one of silicone powder, modified polyethylene wax, stearate and polyhydroxy stearic acid, the antioxidant is at least one of hindered phenol antioxidant, phosphite antioxidant and thioester antioxidant, and the other processing aids are added according to the requirements of products, including but not limited to delustrant, water absorbent, ultraviolet inhibitor and the like.
The invention has the beneficial effects that: greatly reduces the production cost, saves energy and reduces emission, and simultaneously carries out high-value utilization on the recovered polyolefin.
The present invention has been made in view of the above and/or problems associated with the prior art methods of recycling, modifying and preparing flame retardant polyethylene composites and crushing systems.
Therefore, the invention aims to solve the problems that the crushing of the wire and cable sheath layer is not thorough enough in the recovery process, and the crushed particles easily block the screen mesh, so that the screening efficiency is reduced.
In order to solve the technical problems, the invention provides the following technical scheme: the crushing system for preparing the flame-retardant polyethylene composite material by recycling and modifying comprises a crushing assembly, a crushing device and a control device, wherein the crushing assembly comprises a hopper and a crushing piece, and the crushing piece is arranged at the bottom of the hopper; the method comprises the steps of,
the screening assembly is arranged below the crushing piece and comprises a screening piece, a driving piece and a dredging piece, wherein the screening piece is arranged below the crushing piece, the driving piece is positioned on one side of the screening piece, and the dredging piece is arranged in the screening piece.
As a preferable scheme of the crushing system for recycling and modifying the prepared flame-retardant polyethylene composite material, the invention comprises the following steps: the crushing piece comprises a fixed box, a crushing roller, a driving wheel and a guide plate, wherein the fixed box is fixed at the bottom of the hopper, the crushing roller is rotationally connected in the fixed box, the driving wheel is fixed on the surface of the crushing roller, and the guide plate is fixed on the inner wall of the hopper.
As a preferable scheme of the crushing system for recycling and modifying the prepared flame-retardant polyethylene composite material, the invention comprises the following steps: the screening piece comprises a screening frame, a screening plate, a recovery box, a collecting box, a vibration generator and a springboard, wherein the screening frame is arranged below the fixing box, the screening plate is fixed in the screening frame, the recovery box is fixed on one side of the screening plate, the collecting box is fixed on one side of the screening plate, the vibration generator is fixed on one side of the recovery box, and the springboard is fixed on the surface of the screening plate through a hinge.
As a preferable scheme of the crushing system for recycling and modifying the prepared flame-retardant polyethylene composite material, the invention comprises the following steps: the driving piece comprises a supporting shell, a supporting table, a supporting shaft, a driving gear, a driving belt pulley, a transmission belt pulley and a transmission belt, wherein the supporting shell is fixed on one side of the recovery box, the supporting table is fixed on the end part of the supporting shell, the supporting shaft is rotationally connected in the supporting table, the driving gear is fixed on the surface of the supporting shaft, the driving belt pulley is fixed on the surface of the supporting shaft, the transmission belt pulley is rotationally connected in the supporting shell through a rotating shaft, and the transmission belt is sleeved on the surface of the transmission belt pulley.
As a preferable scheme of the crushing system for recycling and modifying the prepared flame-retardant polyethylene composite material, the invention comprises the following steps: the dredging piece comprises a fixing piece, a driving shaft, a sliding frame, a driving column, a dredging rod, an inserting column, a rotating gear, a rack, a pull rod, an adjusting buckle, a spring and a driving plate, wherein the fixing piece is fixed on the surface of a transmission belt, the driving shaft is fixed on the surface of the fixing piece, the sliding frame slides in a supporting shell, the driving column is fixed on one side of the sliding frame, the dredging rod is rotationally connected to the surface of the driving column, the inserting column is fixed on the surface of the dredging rod, the rotating gear is fixed on the surface of the dredging rod, the rack is fixed on the inner wall of the supporting shell, the pull rod slides in the screening plate, the adjusting buckle is fixed on one side of the pull rod, the end part of the spring is fixed on the end part of the pull rod, and the driving plate is fixed on the other end of the pull rod.
The invention has the beneficial effects that: can prevent through setting up screening component that the screen cloth from being blockked up by the granule after the breakage, improve broken efficiency.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:
FIG. 1 is a flow chart of a method for recycling and modifying a flame retardant polyethylene composite material.
FIG. 2 is a block diagram of a crushing system for recycling and modifying a flame retardant polyethylene composite material.
FIG. 3 is a cross-sectional view of a stationary box of a crushing system for recycling and modifying a flame retardant polyethylene composite.
FIG. 4 is a diagram showing the connection structure of a screening frame and a screening plate of a crushing system for recycling and modifying a flame-retardant polyethylene composite material.
FIG. 5 is a diagram showing the connection structure of the support shell and the support table of the crushing system for recycling and modifying the flame retardant polyethylene composite material.
FIG. 6 is a diagram showing the connection of a drive gear and a drive pulley of a crushing system for recycling and modifying a flame retardant polyethylene composite material.
FIG. 7 is a diagram showing the connection structure of a plug and a screening plate of a crushing system for recycling and modifying a flame retardant polyethylene composite material.
FIG. 8 is a schematic diagram of the relative positions of two adjusting buckles of a crushing system for recycling and modifying a flame retardant polyethylene composite material.
FIG. 9 is a diagram of the carriage and drive plate connection for a crushing system for recycling, modifying and making a flame retardant polyethylene composite.
FIG. 10 is a view showing the connection structure of a fixing piece and a driving shaft of a crushing system for recycling and modifying a flame retardant polyethylene composite material.
FIG. 11 is a diagram of the carriage and drive column connection of a crushing system for recycling, modifying and making a flame retardant polyethylene composite.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present invention is not limited to the specific embodiments disclosed below.
Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Example 1
Referring to fig. 1 to 11, in a first embodiment of the present invention, a method and a crushing system for preparing a flame retardant polyethylene composite material by recycling and modifying are provided, wherein the method and the crushing system for preparing a flame retardant polyethylene composite material by recycling and modifying comprise a crushing assembly 100 and a screening assembly 200, and through the cooperation of the two assemblies, a sheath layer of a wire and a cable can be thoroughly crushed, and meanwhile, the crushed particles can be prevented from blocking a screen, so that the screening efficiency is reduced.
Firstly, manually sorting the recycled polyethylene pipes, the polyethylene cable sheaths, the polyethylene plates and the like, and then accurately sorting by an infrared spectrum sorter to ensure that the recycled materials are polyethylene and named as recycled raw materials.
And secondly, crushing the recovered raw material obtained in the first step through a crushing assembly 100, controlling the blocks within 5 mm through a screening assembly 200, performing air separation to remove larger impurities, washing with water, and then filtering, drying and standing by to obtain the recovered polyethylene crushed material.
Thirdly, performing surface activation treatment on the flame retardant in a high-speed mixer, controlling the activation rate to be not lower than 95%, and further coating the surface-modified flame retardant with a phase solvent and polyethylene resin.
And fourthly, extruding the recycled polyethylene crushed materials to a first single-screw extruder unit through a double-screw extruder unit, then to a second single-screw extruder unit, and finally to a mixing mill, wherein the screens of the double-screw extruder and the single-screw extruder are 120 meshes and 150 meshes respectively.
And fifthly, adding the filtered polyethylene return material, the coated flame retardant, the polyethylene resin, the toughening agent, the lubricant, the antioxidant and other processing aids into a mixing mill together, mixing uniformly, granulating by adopting a double-stage extruder unit, granulating by adopting a water ring, and drying at 60-80 ℃ for more than 8 hours to obtain the flame-retardant polyethylene composite material.
In particular, the crushed material of the flame retardant polyethylene can be recovered from the cable material or from other flame retardant polyethylene products used in daily life.
Specifically, the polyethylene resin is at least one of high-density polyolefin, metallocene catalyzed polyethylene and bimodal polyethylene, and the toughening agent is at least one of ethylene-vinyl acetate copolymer, ethylene-propylene copolymer, ethylene-butene copolymer, ethylene-octene copolymer and ethylene propylene diene monomer.
Specifically, the flame retardant is at least one of coated red phosphorus or red phosphorus master batch, antimony trioxide, halogen flame retardant, phosphorus nitrogen flame retardant, magnesium flame retardant, carbon flame retardant and auxiliary flame retardant with carbon forming function, including but not limited to nano kaolin, attapulgite, organized modified montmorillonite, halloysite, sepiolite, boehmite and the like.
Specifically, the lubricant is at least one of silicone powder, modified polyethylene wax, stearate and polyhydroxy stearic acid, the antioxidant is at least one of hindered phenol antioxidant, phosphite antioxidant and thioester antioxidant, and other processing aids are added according to the requirements of products, including but not limited to delustrant, water absorbent, ultraviolet inhibitor and the like.
When in use, 20 kg of magnesium hydroxide flame retardant with the particle size D50 of 0.5 micron is added into a high-speed mixer, stirred for 20 minutes at the rotating speed of 3000 r/min, 3.5 kg of polysilicone structure coupling agent is added, and stirring is continued for 10 minutes at the rotating speed of 1000 r/min, and the activation rate is detected to be not lower than 95%. 5 kg of red phosphorus flame retardant is added, and stirring is continued for 0.5-2min at the rotating speed of 300 r/min. 3 kg of a glycidyl methacrylate graft modified ethylene-ethyl acrylate copolymer phase solvent was added and stirring was continued at 1000 r/min for 10min. Subsequently, 1 kg of lubricant, 0.1 kg of antioxidant and 0.1 kg of ultraviolet inhibitor were added, stirring was continued for 5min, and then all the materials were put into a kneader. Simultaneously, 57 kg of recovered flame-retardant polyethylene crushed materials and 10 kg of high-density polyethylene resin are extruded to a first single-screw extruder set through a double-screw extruder set, then to a second single-screw extruder set, and finally to a mixing mill. Mixing for 10min, granulating by adopting a double-stage extruder unit, granulating by adopting a water ring, and drying at 60 ℃ for 10 hours to obtain the flame-retardant polyethylene composite material.
Example 2
Referring to fig. 2 to 11, a second embodiment of the present invention is based on the previous embodiment.
Specifically, the crushing assembly 100 includes a hopper 101 and a crushing member 102, wherein the crushing member 102 is disposed at the bottom of the hopper 101.
The hopper 101 is used for holding recovered electric wires and cable sheath layers, and the breaking piece 102 is used for breaking the recovered electric wires and cable sheath layers.
Screening assembly 200 sets up in broken piece 102 below, including screening piece 201, driving piece 202 and mediation piece 203, screening piece 201 sets up in broken piece 102 below, and driving piece 202 is located screening piece 201 one side, and mediation piece 203 sets up in screening piece 201.
Screening piece 201 is used for screening broken wire, cable jacket layer granule for its granule is less than 5 millimeters, and driving piece 202 is used for driving mediation piece 203 and works, makes mediation piece 203 can clear up the sieve mesh of screening piece 201, thereby prevents that the sieve mesh of screening piece 201 from being blocked for a long time, causes screening efficiency to descend.
Specifically, the crushing member 102 includes a fixed box 102a, a crushing roller 102b, a driving wheel 102c, and a guide plate 102d, the fixed box 102a is fixed to the bottom of the hopper 101, the crushing roller 102b is rotatably connected to the fixed box 102a, the driving wheel 102c is fixed to the surface of the crushing roller 102b, and the guide plate 102d is fixed to the inner wall of the hopper 101.
The fixed box 102a is used for supporting and fixing the crushing rollers 102b, the crushing rollers 102b are two in number and are connected in the fixed box 102a in a rotating mode through bearings, driving wheels 102c are fixed on the two crushing rollers 102b, the driving wheels 102c are used for being externally connected with a driving source, for example, the driving wheels 102c can drive the two crushing rollers 102b to rotate relatively, the two crushing rollers 102b crush electric wires and cable sheath layers, the guide plates 102d are used for conveying the electric wires and cable sheath layers in the hopper 101 between the two crushing rollers 102b, the crushing rollers 102b are convenient to crush, and when the fixed box is used, the hopper 101 and the fixed box 102a can be fixed through the lap joint support, so that the position of the crushing piece 102 is fixedly supported.
Specifically, the screening member 201 includes a screening frame 201a, a screening plate 201b, a recovery box 201c, a collection box 201d, a vibration generator 201e, and a springboard 201f, the screening frame 201a is disposed below the fixed box 102a, the screening plate 201b is fixed in the screening frame 201a, the recovery box 201c is fixed on one side of the screening plate 201b, the collection box 201d is fixed on one side of the screening plate 201b, the vibration generator 201e is fixed on one side of the recovery box 201c, and the springboard 201f is fixed on the surface of the screening plate 201b by a hinge.
The screening frame 201a is used for shielding around the screening plate 201b, prevent the material roll-off on the screening plate 201b, set up the sieve mesh of two kinds of different apertures on the screening plate 201b, be located the sieve mesh diameter of fixed box 102a below less, can make the granule of block within 5 millimeters pass through, this qualified granule accessible collection box 201c retrieves, the sieve mesh diameter of keeping away from fixed box 102a one side on the screening plate 201b is great, accessible great granule, this is unqualified granule, accessible collection box 201d collects, this kind of great granule needs to pass through crushing roller 102b again, the crushing roller 102b surface is sharp edge, can cut off the restrictive coating of electric wire, cable, through setting up vibration generator 201e, can make the collection box 201c drive screening plate 201b and violently vibrate, thereby screen the granule on screening plate 201b surface, through setting up springboard 201 f's granule, can turn over one face when falling on screening plate 201b, prevent that less granule from being built by great granule and carrying out the crushing roller 200 b and repeated processing to support frame 200 b, thereby the screening assembly is formed when the big granule is passed through to the support frame is fixed with the crushing roller 201b again.
Example 3
Referring to fig. 2 and 5 to 11, a third embodiment of the present invention is based on the first two embodiments.
Specifically, the driving member 202 includes a supporting case 202a, a supporting table 202b, a supporting shaft 202c, a driving gear 202d, a driving pulley 202e, a driving pulley 202f, and a transmission belt 202g, wherein the supporting case 202a is fixed on one side of the recovery box 201c, the supporting table 202b is fixed on an end of the supporting case 202a, the supporting shaft 202c is rotatably connected to the supporting table 202b, the driving gear 202d is fixed on a surface of the supporting shaft 202c, the driving pulley 202e is fixed on a surface of the supporting shaft 202c, the driving pulley 202f is rotatably connected to the supporting case 202a through a rotation shaft, and the transmission belt 202g is sleeved on a surface of the driving pulley 202 f.
The number of the supporting shells 202a is two, the supporting shells 202a are respectively fixed on two sides of the recovery box 201c, the number of the supporting tables 202b is two, the supporting tables are respectively arranged at the end parts of the two supporting shells 202a and used for supporting the supporting shafts 202c, the driving belt pulley 202e is connected with an external driving source through a belt, for example, the driving belt pulley 202e is driven by the motor to rotate, when the driving belt pulley 202e rotates, the supporting shafts 202c can be driven to rotate, the supporting shafts 202c drive the two driving gears 202d to rotate, teeth are arranged on the surfaces of the driving belt pulleys 202f, the driving belt pulleys 202f are meshed with the driving gears 202d, when the driving gears 202d rotate, the driving belt pulleys 202f can be driven to rotate, the number of the driving belt 202g is two, and the driving belt pulleys 202f are respectively sleeved on the surfaces of the two driving belt pulleys 202f and used for driving the dredging pieces 203 to work.
Specifically, the dredging member 203 includes a fixing piece 203a, a driving shaft 203b, a carriage 203c, a driving post 203d, a dredging rod 203e, a plug 203f, a rotation gear 203g, a rack 203h, a pull rod 203i, an adjusting buckle 203j, a spring 203k, and a driving plate 203l, the fixing piece 203a is fixed to the surface of the conveying belt 202g, the driving shaft 203b is fixed to the surface of the fixing piece 203a, the carriage 203c slides in the supporting case 202a, the driving post 203d is fixed to the carriage 203c side, the dredging rod 203e is rotatably connected to the surface of the driving post 203d, the plug 203f is fixed to the surface of the dredging rod 203e, the rotation gear 203g is fixed to the surface of the dredging rod 203e, the rack 203h is fixed to the inner wall of the supporting case 202a, the pull rod 203i slides in the screening plate 201b, the adjusting buckle 203j is fixed to the pull rod 203i side, the end of the spring 203k is fixed to the end of the pull rod 203i, and the driving plate 203l is fixed to the other end of the pull rod 203 i.
The number of the fixing plates 203a is two, the fixing plates 203a are respectively fixed on the surfaces of the two conveying belts 202g, when the conveying belts 202g move, the fixing plates 203a can be driven to move, the driving shafts 203b are used for driving the sliding frames 203c to move, limiting blocks are arranged on the surfaces of the sliding frames 203c, the sliding frames 203c can slide in the supporting shell 202a and cannot slide out of the supporting shell 202a, the driving columns 203d are used for driving the dredging rods 203e to move, the dredging rods 203e and the driving columns 203d are rotationally connected through bearings, the diameter of the inserting columns 203f is smaller than that of the sieve holes, when the dredging rods 203e rotate, the inserting columns 203f can be inserted into the sieve holes of the sieve plates 201b, so that particles blocked in the sieve holes are extruded, when the dredging rods 203e are used, the number of the inserting columns 203f can be matched with the sieve holes of the sieve plates 201b according to actual conditions, and when the dredging rods 203e rotate, the inserting columns 203f are removed from the sieve holes, the adjacent inserting posts 203f can be inserted into adjacent sieve holes, the rotating gear 203g is meshed with the rack 203h, when the driving posts 203d drive the dredging rods 203e to move, the rotating gear 203g can rotate on the rack 203h to drive the dredging rods 203e to rotate, the springs 203k are in a stretching state, when the dredging rods 203e approach the sieve holes, the limiting blocks of the sliding frame 203c can squeeze the corresponding driving plates 203l on the corresponding sieve holes to drive the driving plates 203l to move, the driving plates 203l drive the pull rods 203i to move, the two pull rods 203i on one of the plug holes are oppositely arranged to enable the two pull rods 203i on the plug holes to be far away from each other, the springs 203k are stretched, meanwhile, the two adjusting buckles 203j on each sieve hole are driven to be far away from each other, so that the diameter of the sieve holes is slightly larger, the inserting posts 203f can conveniently squeeze blocked particles in the sieve holes, when the dredging rods 203e move to the adjacent sieve holes, the limiting block on the sliding frame 203c is far away from the driving plate 203l, under the action of the reset tension of the spring 203k, the driving plate 203l can be reset, and meanwhile, the two pull rods 203i drive the two adjusting buckles 203j to be close to each other, so that the sieve holes are restored to the original size.
When the device is used, firstly, sorted electric wires and cable sheath layers are added into the hopper 101, the driving wheel 102c is externally connected with a driving source, so that the two crushing rollers 102b can be driven to rotate relatively through the driving wheel 102c, the two crushing rollers 102b crush the electric wires and cable sheath layers, crushed particles fall on the screening plate 201b, qualified particles can be recovered through the recovery box 201c, unqualified particles can be collected through the collection box 201d, the larger particles need to be crushed again through the crushing rollers 102b, through the arrangement of the springboard 201f, the particles passing through the springboard 201f can turn over one surface when falling on the screening plate 201b, and the smaller particles are prevented from being brought to the large aperture of the screening plate 201b by the larger particles, so that repeated crushing of the small particles is formed through the crushing treatment of the crushing rollers 102b again.
When the sieve pores are cleared, the driving pulley 202e is externally connected with a driving source, when the driving pulley 202e rotates, the supporting shaft 202c can be driven to rotate, the supporting shaft 202c drives the two driving gears 202d to rotate, teeth are arranged on the surface of the driving pulley 202f, and the driving pulley 202f is meshed with the driving gears 202d, when the driving gears 202d rotate, the driving pulley 202f can be driven to rotate, the driving pulley 202f drives the transmission belt 202g to act, when the transmission belt 202g moves, the fixing piece 203a can be driven to move, the driving shaft 203b is used for driving the sliding frame 203c to move, when the dredging rod 203e approaches to the sieve pores, the limiting block of the sliding frame 203c can squeeze the corresponding driving plate 203l on the corresponding sieve pores, so that the driving plate 203l drives the pull rod 203i to move, and the two pull rods 203i on one plug pore are oppositely arranged, so that the two pull rods 203i on each plug pore are far away from each other, the spring 203k is stretched, and simultaneously, when the transmission belt 202g moves, the two adjusting buckles 203j on each jack are slightly far away from each other, the diameter of the two adjacent pull rods 203j is far away from each other, and the two pull rods 203f are convenient to move, and the two adjacent pull rods 203j are far from each other, and the sliding rods 203j are convenient to move, and the sliding rods are far from each other, and the two pull rods 203j are far from each are far from the sieve pore, and have a large, and are convenient to move.
It should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or substituted without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered in the scope of the claims of the present invention.
Claims (10)
1. A method for preparing a flame-retardant polyethylene composite material by recycling and modifying is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the steps of firstly, manually sorting the recycled flame-retardant polyethylene materials, and accurately sorting the recycled flame-retardant polyethylene materials by an infrared spectrum sorter to ensure that the recycled materials are polyethylene, and naming the recycled materials as recycling raw materials;
secondly, crushing the recycled raw material obtained in the first step through a crushing assembly (100), controlling the blocks within 5 mm through a screening assembly (200), performing air separation to remove larger impurities, washing with water, filtering, drying and standing by to obtain recycled polyethylene crushed materials;
thirdly, performing surface activation treatment on the flame retardant in a high-speed mixer, controlling the activation rate to be not lower than 95%, and further coating the surface-modified flame retardant with a phase solvent and polyethylene resin;
fourthly, extruding the recycled polyethylene crushed materials to a first single-screw extruder set through a double-screw extruder set, extruding the recycled polyethylene crushed materials to a mixing mill through a second single-screw extruder set, wherein the screens of the double-screw extruder and the single-screw extruder are 120 meshes and 150 meshes respectively;
and fifthly, adding the filtered polyethylene return material, the coated flame retardant, the polyethylene resin, the toughening agent, the lubricant, the antioxidant and other processing aids into a mixing mill together, mixing uniformly, granulating by adopting a double-stage extruder unit, granulating by adopting a water ring, and drying at 60-80 ℃ for more than 8 hours to obtain the flame-retardant polyethylene composite material.
2. The method for preparing the flame-retardant polyethylene composite material by recycling and modifying according to claim 1, wherein the method comprises the following steps: the crushed material of the flame retardant polyethylene can be recovered from the cable material or other flame retardant polyethylene products used in daily life.
3. The method for preparing the flame-retardant polyethylene composite material by recycling and modifying according to claim 2, wherein the method comprises the following steps: the polyethylene resin is at least one of high-density polyolefin, metallocene catalyzed polyethylene and bimodal polyethylene, and the toughening agent is at least one of ethylene-vinyl acetate copolymer, ethylene-propylene copolymer, ethylene-butene copolymer, ethylene-octene copolymer and ethylene propylene diene monomer.
4. The method for preparing the flame-retardant polyethylene composite material by recycling and modifying according to claim 3, wherein the method comprises the following steps: the flame retardant is at least one of coated red phosphorus or red phosphorus master batch, antimonous oxide, halogen flame retardant, phosphorus nitrogen flame retardant, magnesium flame retardant, carbon flame retardant and auxiliary flame retardant with carbon forming function (including but not limited to nano kaolin, attapulgite, organized modified montmorillonite, halloysite, sepiolite, boehmite and the like).
5. The method for preparing the flame-retardant polyethylene composite material by recycling and modifying according to claim 4, wherein the method comprises the following steps: the lubricant is at least one of silicone powder, modified polyethylene wax, stearate and polyhydroxy stearic acid, the antioxidant is at least one of hindered phenol antioxidant, phosphite antioxidant and thioester antioxidant, and the other processing aids are added according to the requirements of products, including but not limited to delustrant, water absorbent, ultraviolet inhibitor and the like.
6. A crushing system for preparing flame-retardant polyethylene composite materials by recycling and modifying is characterized in that: the method for preparing the flame-retardant polyethylene composite material by recycling and modifying according to any one of claims 1-5 comprises the following steps,
the crushing assembly (100) comprises a hopper (101) and a crushing piece (102), wherein the crushing piece (102) is arranged at the bottom of the hopper (101); the method comprises the steps of,
screening assembly (200) set up in broken piece (102) below, including screening piece (201), driving piece (202) and mediation piece (203), screening piece (201) set up in broken piece (102) below, driving piece (202) are located screening piece (201) one side, mediation piece (203) set up in screening piece (201).
7. The crushing system for recycling, modifying and preparing flame-retardant polyethylene composite material according to claim 6, wherein: the crushing piece (102) comprises a fixed box (102 a), a crushing roller (102 b), a driving wheel (102 c) and a guide plate (102 d), wherein the fixed box (102 a) is fixed at the bottom of the hopper (101), the crushing roller (102 b) is rotationally connected in the fixed box (102 a), the driving wheel (102 c) is fixed on the surface of the crushing roller (102 b), and the guide plate (102 d) is fixed on the inner wall of the hopper (101).
8. The crushing system for recycling, modifying and preparing flame-retardant polyethylene composite material according to claim 7, wherein: screening piece (201) include screening frame (201 a), screening plate (201 b), collection box (201 c), collection box (201 d), shock generator (201 e) and springboard (201 f), screening frame (201 a) set up in fixed box (102 a) below, screening plate (201 b) are fixed in screening frame (201 a), collection box (201 c) are fixed in screening plate (201 b) one side, collection box (201 d) are fixed in screening plate (201 b) one side, shock generator (201 e) are fixed in collection box (201 c) one side, springboard (201 f) are fixed in through the hinge screening plate (201 b) surface.
9. The crushing system for recycling, modifying and preparing flame-retardant polyethylene composite material according to claim 8, wherein: the driving piece (202) comprises a supporting shell (202 a), a supporting table (202 b), a supporting shaft (202 c), a driving gear (202 d), a driving belt pulley (202 e), a driving belt pulley (202 f) and a transmission belt (202 g), wherein the supporting shell (202 a) is fixed on one side of the recovery box (201 c), the supporting table (202 b) is fixed on the end part of the supporting shell (202 a), the supporting shaft (202 c) is rotationally connected in the supporting table (202 b), the driving gear (202 d) is fixed on the surface of the supporting shaft (202 c), the driving belt pulley (202 e) is fixed on the surface of the supporting shaft (202 c), the driving belt pulley (202 f) is rotationally connected in the supporting shell (202 a) through a rotating shaft, and the transmission belt (202 g) is sleeved on the surface of the driving belt pulley (202 f).
10. The crushing system for recycling, modifying and preparing flame-retardant polyethylene composite material according to claim 9, wherein: the dredging piece (203) comprises a fixing piece (203 a), a driving shaft (203 b), a sliding frame (203 c), a driving column (203 d), a dredging rod (203 e), a plug-in column (203 f), a rotating gear (203 g), a rack (203 h), a pull rod (203 i), an adjusting buckle (203 j), a spring (203 k) and a driving plate (203 l), wherein the fixing piece (203 a) is fixed on the surface of the conveying belt (202 g), the driving shaft (203 b) is fixed on the surface of the fixing piece (203 a), the sliding frame (203 c) slides in the supporting shell (202 a), the driving column (203 d) is fixed on one side of the sliding frame (203 c), the dredging rod (203 e) is rotationally connected to the surface of the driving column (203 d), the plug-in column (203 f) is fixed on the surface of the dredging rod (203 e), the rotating gear (203 g) is fixed on the surface of the dredging rod (203 e), the sliding frame (203 h) is fixed on the inner wall (202 a), the end part (203 j) is fixed on the end part (203 i) of the pull rod (203 i) is fixed on the other end part (203 i).
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| CN219404982U (en) * | 2023-04-11 | 2023-07-25 | 上海鸿鸟新材料有限公司 | Vibrating screen for producing polyethylene products |
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| CN116651745A (en) * | 2023-07-11 | 2023-08-29 | 范翠磊 | Anti-blocking rice screening device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20120124245A (en) * | 2011-05-03 | 2012-11-13 | 주식회사 포스코 | Device and method for controlling screening size of exhaust sintering gas activated carbon |
| CN210906476U (en) * | 2019-04-29 | 2020-07-03 | 内蒙古万众炜业科技环保股份公司 | Large-particle-size coal crushing and screening equipment |
| CN219404963U (en) * | 2022-12-13 | 2023-07-25 | 扬中市宏为电缆材料有限公司 | Low-smoke halogen-free flame-retardant polyolefin screening mechanism for sheath material processing |
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