CN115366294A - Electrostatic separation device and plastic recycling production line - Google Patents

Electrostatic separation device and plastic recycling production line Download PDF

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Publication number
CN115366294A
CN115366294A CN202211012699.4A CN202211012699A CN115366294A CN 115366294 A CN115366294 A CN 115366294A CN 202211012699 A CN202211012699 A CN 202211012699A CN 115366294 A CN115366294 A CN 115366294A
Authority
CN
China
Prior art keywords
electrode plate
electric field
air supply
accommodating cavity
electrostatic sorting
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
CN202211012699.4A
Other languages
Chinese (zh)
Inventor
秦玉飞
吕怀兴
陈龙
牛远航
刘玉清
李华健
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.)
Henan Green Recycling Electronic Waste Disposal Co ltd
Jiangxi Green Recycling Industry Co ltd
Original Assignee
Henan Green Recycling Electronic Waste Disposal Co ltd
Jiangxi Green Recycling Industry 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 Henan Green Recycling Electronic Waste Disposal Co ltd, Jiangxi Green Recycling Industry Co ltd filed Critical Henan Green Recycling Electronic Waste Disposal Co ltd
Priority to CN202211012699.4A priority Critical patent/CN115366294A/en
Publication of CN115366294A publication Critical patent/CN115366294A/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
    • 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
    • B29B17/02—Separating plastics from other materials
    • B29B2017/0203—Separating plastics from 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
    • B29B17/02—Separating plastics from other materials
    • B29B2017/0213—Specific separating techniques
    • B29B2017/0262—Specific separating techniques using electrical caracteristics
    • B29B2017/0265—Electrostatic separation
    • 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

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Electrostatic Separation (AREA)

Abstract

The invention discloses an electrostatic sorting device and a plastic recovery production line, which comprise: the shell is internally provided with an accommodating cavity, and the top end of the shell is provided with a throwing port communicated with the accommodating cavity and the outside; the electrostatic assembly comprises a first electrode plate and a second electrode plate, an electric field in the horizontal direction is formed between the first electrode plate and the second electrode plate, and the electric field is positioned below the putting-in opening; the air supply assembly comprises an air supply end which is positioned in the accommodating cavity so as to enable the accommodating cavity to form vertical and upward air flow. An electric field in the horizontal direction is formed between the first electrode plate and the second electrode plate. The plastic particles to be sorted are put into the accommodating cavity through the putting-in opening, so that the plastic particles can fall in the electric field. The air flow vertically upwards delays the falling speed of the plastic particles, so that the residence time of the plastic particles in the electric field is prolonged. Make the electric field can have sufficient time to exert the effort to the plastic granules, and then can fully change the plastic granules orbit that drops, improved the accuracy that the plastic granules was selected separately.

Description

Electrostatic separation device and plastic recycling production line
Technical Field
The invention relates to the field of plastic recovery, in particular to an electrostatic sorting device and a plastic recovery production line.
Background
Electrostatic sorting refers to a machine that uses the additive effect of static electricity to sort different substances. Electrostatic separation is a method of sorting various plastics by utilizing their different electrostatic properties. The waste plastics are sorted by static electricity, and a plurality of waste plastics mixed together need to be sorted for many times. The electrostatic sorting method is particularly suitable for poled polyvinyl chloride.
The prior electrostatic sorting device can be seen in patent with application number CN200880025558.8, and utilizes electrostatic force to change the falling trajectory of plastic particles, thereby sorting plastic particles with different charges. However, in the existing electrostatic separation equipment, because the falling speed of the plastic particles is high, the action time of an electric field on the plastic particles is short, and then the falling trajectory of the plastic particles deviates to a small extent, so that part of the plastic particles cannot be correctly separated.
Therefore, how to prolong the residence time of the plastic particles in the electric field is an urgent technical problem to be solved.
Disclosure of Invention
The invention aims to overcome the technical defects, provides an electrostatic sorting device and a plastic recycling production line, and solves the technical problem that in the prior art, the plastic particle sorting accuracy is low due to the fact that the action time of electric field force on plastic particles is too short.
In order to achieve the above technical object, an aspect of the present invention includes an electrostatic sorting apparatus, including:
the top end of the machine shell is provided with a throwing opening communicated with the accommodating cavity and the outside;
the electrostatic assembly comprises a first electrode plate and a second electrode plate which are oppositely arranged, an electric field in the horizontal direction is formed between the first electrode plate and the second electrode plate, and the electric field is positioned below the putting-in opening;
and the air supply assembly comprises an air supply end which is positioned in the accommodating cavity so as to form vertical and upward air flow in the accommodating cavity.
Preferably, the housing further comprises a shunt member, the shunt member is located below the electric field, the shunt member has a first guide plate and a second guide plate which are obliquely arranged, and the first guide plate and the second guide plate face away from each other.
Preferably, the housing further includes a first receiving cavity and a second receiving cavity, the first receiving cavity receives the bottom end of the first guide plate, and the second receiving cavity receives the bottom end of the second guide plate.
Preferably, the side wall of the casing is provided with a first material taking port communicated with the first storage cavity and the outside, and a second material taking port communicated with the second storage cavity and the outside.
Preferably, the air supply assembly comprises an air supply blower and an air conveying pipe, the air supply blower is provided with an output end, one end of the air conveying pipe is communicated with the output end, and the other end of the air conveying pipe is provided with the air supply end.
Preferably, the air supply end further comprises a spray head, and a plurality of air inlet holes are formed in the spray head.
Preferably, a plurality of air outlets are further formed in the top end of the casing and communicated with the accommodating cavity and the outside.
Preferably, two opposite side walls of the casing are respectively provided with a plurality of first installation seats and a plurality of second installation seats, the plurality of first installation seats are arranged in the vertical direction, the first electrode plate is detachably installed on one of the first installation seats, the plurality of second installation seats are arranged in the vertical direction, and the second electrode plate is detachably installed on one of the second installation seats.
Preferably, the housing is a stainless steel housing.
A plastics recycling produces line, it is equipped with above-mentioned electrostatic separation device.
Compared with the prior art, the invention has the beneficial effects that: an electric field in the horizontal direction is formed between the first electrode plate and the second electrode plate. The plastic particles to be sorted are put into the accommodating cavity through the putting-in opening, so that the plastic particles can fall in the electric field. Meanwhile, the air supply end of the air supply assembly can form vertical upward air flow in the accommodating cavity, and the vertical upward air flow can delay the falling speed of the plastic particles, so that the detention time of the plastic particles in an electric field is prolonged. Make can have sufficient time of electric field to exert the effort to plastic granules, and then can fully change the plastic granules orbit that drops for different types of plastic granules can be fully selected separately under the effect of electric field, have improved the accuracy that plastic granules selected separately.
Drawings
FIG. 1 is a perspective view of an electrostatic sorting apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of an electrostatic sorting apparatus according to an embodiment of the present invention;
FIG. 3 is a partial schematic view of an electrostatic assembly in accordance with an embodiment of the invention;
FIG. 4 is a partial schematic view of a showerhead according to an embodiment of the invention;
the electrostatic charging device comprises a machine shell 100, an accommodating cavity 110, a charging opening 120, a flow dividing piece 130, a first guide plate 131, a second guide plate 132, a first accommodating cavity 140, a second accommodating cavity 150, a first material taking opening 160, a second material taking opening 170, a first mounting seat 180, a second mounting seat 190, an electrostatic component 200, a first electrode plate 210, a second electrode plate 220, an air supply component 300, an air supply blower 310, an air supply pipe 320, a spray head 330 and an air outlet 331.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to 4, the present invention provides an electrostatic sorting apparatus. The movable device can be applied to plastic recycling equipment and is used for sorting different types of plastic fragments. This electrostatic separation device can prolong the tenesmus time of plastic granules, and then the extension electric field is to plastic granules's effect time, has improved the accuracy of selecting separately plastic granules.
In some embodiments, the electrostatic sorting apparatus includes a casing 100, an electrostatic assembly 200, and an air supply assembly 300, wherein the casing 100 has a receiving cavity 110 therein, and a top end of the casing 100 is opened with a feeding port 120 communicating the receiving cavity 110 with the outside. The electrostatic assembly 200 includes a first electrode plate 210 and a second electrode plate 220 disposed oppositely, and an electric field is formed between the first electrode plate 210 and the second electrode plate 220 in a horizontal direction, and the electric field is located below the input port 120. The air supply assembly 300 includes an air supply end located in the accommodating chamber 110, so as to form a vertical upward air flow in the accommodating chamber 110.
An electric field in a horizontal direction is formed between the first electrode plate 210 and the second electrode plate 220. The plastic particles to be sorted are put into the accommodating cavity 110 through the putting-in opening 120, so that the plastic particles can fall in the electric field. Meanwhile, the air supply end of the air supply assembly 300 forms vertical upward air flow in the accommodating cavity 110, and the vertical upward air flow delays the falling speed of the plastic particles, so that the residence time of the plastic particles in an electric field is prolonged. Make can have sufficient time of electric field to exert the effort to plastic granules, and then can fully change the plastic granules orbit of weighing down for different types of plastic granules can fully be selected separately under the effect of electric field, have improved the accuracy that plastic granules selected separately.
It can be understood that in order to obtain a better sorting effect of the plastic particles. The putting-in opening 120 should be formed in a strip shape, and the strip-shaped putting-in opening 120 should be parallel to the first electrode plate 210 and the second electrode plate 220, so that the distance between each plastic particle entering the accommodating cavity 110 and the first electrode plate 210 or the second electrode plate 220 is substantially the same. And then the plastic particles can be accurately sorted by the plastic particles under the action of the electric field. If the distance between each plastic particle and the first electrode plate 210 or the second electrode plate 220 after passing through the input port 120 is too large. A portion of the plastic particles that should be biased toward the first electrode plate 210 will be caused to fall closer to the second electrode plate 220 than the plastic particles that should be biased toward the second electrode plate 220. Therefore, the use of the strip-shaped feeding port 120 facilitates more accurate sorting of plastic particles.
In a preferred embodiment, the casing 100 further comprises a current dividing member 130, the current dividing member 130 is located under the electric field, and the current dividing member 130 has a first guide plate 131 and a second guide plate 132 which are obliquely arranged, and the first guide plate 131 and the second guide plate 132 face away from each other. Under the action of the electric field, plastic particles with different charges are deflected to the first guide plate 131 or the second guide plate 132. The diversion member 130 receives the sorted plastic particles, and the sorted plastic particles slide along the first guide plate 131 and the second guide plate 132 respectively, so as to slide to different positions. Avoid the plastic particles after sorting to be mixed together again. In addition, it should be noted that the tip of the splitter 130 is required to face the input port 120. Plastic particles that should have fallen to the first guide plate 131 are prevented from falling to the second guide plate 132, and plastic particles that should have fallen to the second guide plate 132 are prevented from falling to the first guide plate 131.
On the basis of the above solution, the housing 100 further includes a first receiving cavity 140 and a second receiving cavity 150, the first receiving cavity 140 receives the bottom end of the first guide plate 131, and the second receiving cavity 150 receives the bottom end of the second guide plate 132. The first receiving chamber 140 may receive plastic particles slid off the first guide plate 131, and the second receiving chamber 150 may receive plastic particles slid off the second guide plate 132. Furthermore. The first material taking opening 160 for communicating the first accommodating cavity 140 with the outside is formed in the side wall of the housing 100, so that the plastic particles in the first accommodating cavity 140 can be guided out through the first material taking opening 160. The housing 100 is provided with a second material taking port 170 for communicating the second receiving cavity 150 with the outside, so that the plastic particles in the second receiving cavity 150 can be guided out through the second material taking port 170.
In addition, it should be noted that the first electrode plate 210 and the second electrode plate 220 need to be powered by a dc power source, so as to form a stable electric field between the two electrode plates. In addition, the electric field intensity between the first electrode plate 210 and the second electrode plate 220 can be changed by adjusting the potential difference between the first electrode plate 210 and the second electrode plate 220 through the power supply circuit, so that an operator can increase or reduce the electric field intensity according to actual requirements.
Any embodiment that can generate a vertical upward airflow in the accommodating chamber 110 is possible, and in one embodiment, the air supply assembly 300 includes an air supply 310 and an air delivery pipe 320, wherein the air supply 310 has an output end, and one end of the air delivery pipe 320 is communicated with the output end, and the other end of the air delivery pipe 320 has an air supply end. An air flow is generated by the blower 310 and is guided into the receiving chamber 110 via the air conveying pipe 320.
On the basis of the scheme, the air supply end also comprises a spray head 330, and a plurality of air inlet holes are formed in the spray head 330. The air current leads to in the holding chamber 110 through each inlet port for the air current in the holding chamber 110 can be more even, thereby can play better plastic granules and select separately the effect.
In addition, the air flow in the accommodating cavity 110 is led out conveniently, so that the air flow in the accommodating cavity 110 is kept stable. The top end of the casing 100 is further provided with a plurality of air outlet holes 331, and the air outlet holes 331 are communicated with the accommodating cavity 110 and the outside. So that the airflow enters the accommodating chamber 110 from the bottom end of the casing 100 and is further guided out from the top end of the casing 100. So that a stable vertically upward air flow can be formed in the accommodating chamber 110.
In a preferred embodiment, two opposite sidewalls of the casing 100 are respectively provided with a plurality of first mounting seats 180 and a plurality of second mounting seats 190, the plurality of first mounting seats 180 are arranged in a vertical direction, the first electrode plate 210 is detachably mounted on one of the first mounting seats 180, the plurality of second mounting seats 190 are arranged in a vertical direction, and the second electrode plate 220 is detachably mounted on one of the second mounting seats 190. The first mounting seat 180 and the second mounting seat 190 with different heights can be selected according to actual needs by the first electrode plate 210 and the second electrode plate 220, so that the application range of the electrostatic sorting device is enlarged.
In a preferred embodiment, the enclosure 100 is required to have sufficient structural strength while the enclosure 100 is required to have corrosion resistance, and the enclosure 100 is preferably a stainless steel enclosure 100.
In addition, the invention also provides a plastic recycling production line which is provided with the electrostatic sorting device.
First, the first electrode plate 210 is mounted on a suitable first mounting seat 180, and the second electrode plate 220 is mounted on a suitable second mounting seat 190 according to actual requirements. So that the first electrode plate 210 and the second electrode plate 220 are at an appropriate height while an electric field in a horizontal direction is formed between the first electrode plate 210 and the second electrode plate 220. The plastic particles to be sorted are put into the accommodating cavity 110 through the putting-in opening 120, so that the plastic particles can fall in the electric field. The air supply assembly 300 includes an air blower 310 and an air delivery conduit 320, the air blower 310 having an output end, the air delivery conduit 320 having one end communicating with the output end and the other end having an air supply end. An air flow is generated by the blower 310 and is introduced into the receiving chamber 110 via the air delivery pipe 320. The air supply end also comprises a spray head 330, and a plurality of air inlet holes are arranged on the spray head 330. The air current leads to in the holding chamber 110 through each inlet port for the air current in the holding chamber 110 can be more even, thereby can play better plastic pellet and select separately the effect.
Under the action of the electric field, plastic particles entrained with different charges may be biased towards the first guide plate 131 or the second guide plate 132. The diversion member 130 receives the sorted plastic particles, and the sorted plastic particles slide along the first guide plate 131 and the second guide plate 132 respectively, so as to slide to different positions. The vertical upward air flow can delay the falling speed of the plastic particles, thereby prolonging the residence time of the plastic particles in the electric field. Make can have sufficient time of electric field to exert the effort to plastic granules, and then can fully change the plastic granules orbit of weighing down for different types of plastic granules can fully be selected separately under the effect of electric field, have improved the accuracy that plastic granules selected separately.
The above-described embodiments of the present invention should not be construed as limiting the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. An electrostatic sorting apparatus, comprising:
the top end of the machine shell is provided with a throwing opening communicated with the accommodating cavity and the outside;
the electrostatic assembly comprises a first electrode plate and a second electrode plate which are oppositely arranged, an electric field in the horizontal direction is formed between the first electrode plate and the second electrode plate, and the electric field is positioned below the putting-in opening;
and the air supply assembly comprises an air supply end which is positioned in the accommodating cavity so as to form vertical and upward airflow in the accommodating cavity.
2. The electrostatic sorting apparatus of claim 1, wherein the housing further comprises a flow divider positioned below the electric field, the flow divider having first and second guide plates arranged in an inclined configuration, the first and second guide plates facing away from each other.
3. The electrostatic sorting apparatus of claim 2, wherein the housing further comprises a first receiving chamber and a second receiving chamber, the first receiving chamber receiving a bottom end of the first guide plate, the second receiving chamber receiving a bottom end of the second guide plate.
4. The electrostatic sorting device according to claim 3, wherein a first material taking port communicating the first receiving chamber with the outside and a second material taking port communicating the second receiving chamber with the outside are formed in a side wall of the casing.
5. The electrostatic sorting device according to claim 1, wherein the air supply assembly includes an air supply blower and an air delivery pipe, the air supply blower has an output end, one end of the air delivery pipe is communicated with the output end, and the other end of the air delivery pipe has the air supply end.
6. The electrostatic sorting device according to claim 5, wherein the air supply end further comprises a nozzle, and a plurality of air inlets are formed in the nozzle.
7. The electrostatic sorting device according to claim 6, wherein a plurality of air outlets are further formed in the top end of the casing, and the air outlets are communicated with the accommodating cavity and the outside.
8. The electrostatic sorting apparatus according to claim 1, wherein the casing has a plurality of first mounting seats and a plurality of second mounting seats on opposite side walls thereof, the plurality of first mounting seats being arranged in a vertical direction, the first electrode plate being detachably mounted to one of the first mounting seats, the plurality of second mounting seats being arranged in a vertical direction, and the second electrode plate being detachably mounted to one of the second mounting seats.
9. The electrostatic sorting apparatus of claim 1, wherein the housing is a stainless steel housing.
10. A plastics recycling line equipped with an electrostatic sorting device according to any one of claims 1 to 9.
CN202211012699.4A 2022-08-23 2022-08-23 Electrostatic separation device and plastic recycling production line Pending CN115366294A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211012699.4A CN115366294A (en) 2022-08-23 2022-08-23 Electrostatic separation device and plastic recycling production line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211012699.4A CN115366294A (en) 2022-08-23 2022-08-23 Electrostatic separation device and plastic recycling production line

Publications (1)

Publication Number Publication Date
CN115366294A true CN115366294A (en) 2022-11-22

Family

ID=84067539

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211012699.4A Pending CN115366294A (en) 2022-08-23 2022-08-23 Electrostatic separation device and plastic recycling production line

Country Status (1)

Country Link
CN (1) CN115366294A (en)

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