Recovery unit of old and useless circuit board metal powder and resin powder
Technical Field
The utility model belongs to the technical field of solid waste handles, concretely relates to recovery unit of old and useless circuit board metal powder and resin powder.
Background
With the development of the electronic industry, the elimination amount of waste electronic products and household appliances is increasing, and the electronic waste is considered as one of the solid waste with the highest growth speed, and meanwhile, a large amount of waste circuit boards are generated. In terms of composition, the waste circuit board is a mixture of glass fiber reinforced resin and various metals, the most of the metals loaded on the circuit board are copper and other metals, and the waste resin powder is drilling scraps of the circuit board and contains copper powder and aluminum scraps. If the waste circuit boards are not properly treated and disposed, not only can serious harm be caused to the environment and human health, but also a large amount of useful resources can be lost.
At present, metal in waste circuit boards is mainly recovered by physical methods such as crushing and sorting, a large amount of waste resin powder is still generated after the metal is recovered, most of the waste resin powder is treated and disposed as waste, metal and nonmetal components in the waste resin powder are not effectively utilized, and the large amount of waste resin powder generated in the recovery process is mainly subjected to incineration, landfill treatment or open-air stacking, so that serious secondary pollution to the environment such as air or soil is easily caused.
Chinese patent CN211359124U discloses a circuit board crushing system, which comprises a belt feeder, a primary crusher, a secondary coarse crusher, a screw conveyor, an intermediate bin, a tertiary fine crusher, a vibration module, a material transporting machine, a sorting module, a primary sorting module, a secondary sorting module, a dust collector, a cyclone separator and an exhaust module; the circuit board is coarsely crushed by a primary crusher and a secondary coarse crusher, the material is finely crushed by a tertiary fine crusher, the material after passing through the tertiary crusher becomes powder, when large particles appear, the material is found out by a vibration module and is conveyed to an intermediate bin for secondary tertiary crushing, and copper powder in the material is extracted by a primary sorting module; the dust collector in this patent collects the dust of each unit through wind-force, and after a period, when the dust volume increases and influences work efficiency, need close the dust collector, carries out the deashing under the shutdown state promptly, and this must influence the continuity of whole broken system work, and in addition, this broken system of circuit board collects copper powder, the resin powder of different particle diameters is unified, has restricted the range of application of retrieving copper powder, resin powder.
Disclosure of Invention
The utility model aims at providing a recovery unit of old and useless circuit board metal powder and resin powder has that the treatment effeciency is high, the processing cost is low, realizes the continuous operation and handles, collects resin powder, aluminium bits and the copper powder of different particle diameters for resin powder, aluminium bits and the copper powder of retrieving can be applied to different occasions, and the range of application is wide.
The utility model provides a technical scheme that above-mentioned problem adopted does: the utility model provides a recovery unit of old and useless circuit board metal powder and resin powder, recovery unit includes the breaker, the breaker is connected with the air separator through rubbing crusher, an exit linkage dust remover of air separator, the dust remover is first dust remover and the second dust remover of parallel connection, another exit linkage cyclone import of air separator, an exit linkage dust remover of cyclone, another exit linkage shale shaker, an exit linkage first electrostatic separator of shale shaker, another exit linkage second electrostatic separator of shale shaker, the dust remover still connects one-level resin powder memory and negative-pressure air fan respectively.
Preferably, the aperture of the vibrating screen is 1-2 mm.
Preferably, the first electrostatic separator is further connected with a secondary resin powder storage device, a primary aluminum scrap storage device and a primary copper powder storage device respectively, and the second electrostatic separator is further connected with the secondary aluminum scrap storage device and the secondary copper powder storage device respectively.
Preferably, the first electrostatic separator and the second electrostatic separator both comprise a feeding hopper, a cylindrical rotary drum electrode, a discharging brush and an arc-shaped high-voltage electrode.
Preferably, the primary resin powder storage device and the secondary resin powder storage device are also respectively connected with a brick making section.
Compared with the prior art, the utility model has the advantages of:
(1) the utility model discloses a parallel connection's first dust remover and second dust remover, two dust removers adsorb in turn, the deashing, need not to suspend the dust removal process, and the recovery processing technology who removes dust has realized continuous operation, has reduced the treatment cost.
(2) The utility model discloses a selection by winnowing machine, cyclone make separate the material that the quality is lighter and the material that the quality is heavier, and separation efficiency is high, makes granule footpath resin get into the dust remover as far as possible, reduces dust pollution.
(3) The utility model discloses utilize air separator, cyclone, shale shaker, first electrostatic separator, second separator, parallelly connected first dust remover and the second dust remover that sets up, collect the resin powder of different particle diameters, aluminium bits and copper powder for the resin powder of retrieving, aluminium bits and copper powder can be applied to different occasions, and the range of application is wide.
Drawings
Fig. 1 is a schematic structural diagram of a recycling device for metal powder and resin powder of a waste circuit board in an embodiment of the present invention.
Wherein: the device comprises a crusher 1, a crusher 2, a winnowing machine 3, a dust remover 4, a first dust remover 4-1, a second dust remover 4-2, a cyclone separator 5, a vibrating screen 6, a first electrostatic separator 7, a second electrostatic separator 8, a first-stage resin powder storage 9-1, a second-stage resin powder storage 9-2, a negative pressure fan 10, a first-stage aluminum scrap storage 11-1, a second-stage aluminum scrap storage 11-2, a first-stage copper powder storage 12-1 and a second-stage copper powder storage 12-2.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
As shown in fig. 1, a schematic structural diagram of a recycling apparatus for metal powder and resin powder of a waste circuit board in this embodiment is shown.
A recovery device for metal powder and resin powder of waste circuit boards comprises a crusher 1, the crusher 1 is connected with an air separator 3 through a crusher 2, one outlet of the air separator 3 is connected with a dust remover 4, the dust remover 4 is a first dust remover 4-1 and a second dust remover 4-2 which are connected in parallel, the other outlet of the air separator 3 is connected with an inlet of a cyclone separator 5, one outlet of the cyclone separator 5 is connected with the dust remover 4, the other outlet of the cyclone separator 5 is connected with a vibrating screen 6, one outlet of the vibrating screen 6 is connected with a first electrostatic separator 7, the other outlet of the vibrating screen 6 is connected with a second electrostatic separator 8, the first electrostatic separator 7 is also respectively connected with a second-level resin powder storage 9-2, a first-level aluminum scrap storage 11-1 and a first-level copper powder storage 12-1, the second electrostatic separator 8 is also respectively connected with a secondary aluminum scrap storage 11-2 and a secondary copper powder storage 12-2, the dust remover 4 is also respectively connected with a primary resin powder storage 9-1 and a negative pressure fan 10, and the primary resin powder storage 9-1 and the secondary resin powder storage 9-2 are also respectively connected with a brick making working section.
Wherein, the aperture of shale shaker 6 is 1~2mm, and first electrostatic separator 7 and second electrostatic separator 8 all include hopper, cylindrical rotatory cylinder electrode, the brush of unloading and arc high-voltage electrode.
The operation of this embodiment is described in detail below with reference to the accompanying drawings:
firstly, crushing a large waste circuit board by a crusher 1 and a crusher 2 in sequence to obtain circuit board crushed powder, passing the obtained circuit board crushed powder through an air separator 3, separating light substances from heavy substances by the air separator 3, wherein the circuit board crushed powder contains resin materials, copper materials and aluminum materials, the density of the resin is generally lower than that of copper and aluminum, and the sizes of the crushed powder are different, under the action of the air separator 3, the resin material with the smallest mass and small particle size flows out from one outlet and enters a dust remover 4, the resin material with larger mass and the resin material with large particle size flows out from the other outlet and enters a cyclone separator 5, separating the light substances from the heavy substances again, the resin with small particle size flows into the dust remover 4 from one outlet of the cyclone separator 5, and the copper materials, the aluminum materials and the resin with large particle size flow into a vibrating screen 6, the resin powder, the aluminum scraps and the copper powder with larger particle size and the aluminum scraps and the copper powder with smaller particle size can be obtained by sorting through the vibrating screen 6, the mixture of the resin powder, the aluminum scraps and the copper powder with larger particle size enters the first electrostatic separator 7 through an outlet of the vibrating screen 6, the resin powder, the copper powder and the aluminum scraps with larger particle size can be obtained by separating, the three are respectively stored in the second-stage resin powder storage 9-2, the first-stage copper powder storage 12-1 and the first-stage aluminum scrap storage 11-1, the mixture of the aluminum scraps and the copper powder with smaller particle size enters the second electrostatic separator 8 through another outlet of the vibrating screen 6, the aluminum scraps and the copper powder with smaller particle size can be obtained by separating, and the two are respectively stored in the second-stage aluminum scrap storage 11-2 and the second-stage copper powder storage 12-2.
The resin with small particle size separated in the winnowing machine 3 and the cyclone separator 5 enters the dust remover 4 because of relatively small mass, the resin with small particle size is obtained at a dust discharge port of the dust remover 4 under the action of the negative pressure fan 10 by utilizing the gas-solid action of the dust remover 4 per se and after passing through a filter screen in the dust remover 4, and is stored in a primary resin powder storage 9-1, and clean gas is discharged from an air outlet; in addition, the dust remover 4 is a first dust remover 4-1 and a second dust remover 4-2 which are arranged in parallel, the dust remover firstly enters the first dust remover 4-1 in the suction process, when the first dust remover 4-2 is saturated by adsorption, small-particle-size resin enters the second dust remover 4-2, when the second dust remover 4-2 starts to work, the first dust remover 4-1 is subjected to dust cleaning (the small-particle-size resin after being filtered and settled is discharged through a dust discharge port), after the dust cleaning is finished, the dust cleaner is in a waiting working state, when the second dust remover is saturated by adsorption, the first dust remover 4-1 is used for dust removal, the second dust remover 4-2 is used for dust cleaning, and the two dust removers work alternately.
In addition to the above embodiments, the present invention also includes other embodiments, and all technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.