CN110883066A - A hierarchical preliminary treatment module of heat accumulation baffling for useless processing of electronic product danger - Google Patents
A hierarchical preliminary treatment module of heat accumulation baffling for useless processing of electronic product danger Download PDFInfo
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- CN110883066A CN110883066A CN201911270648.XA CN201911270648A CN110883066A CN 110883066 A CN110883066 A CN 110883066A CN 201911270648 A CN201911270648 A CN 201911270648A CN 110883066 A CN110883066 A CN 110883066A
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- pipe
- crushing
- stage
- baffling
- assembly
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/033—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment comminuting or crushing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/04—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment drying
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
- F23G5/46—Recuperation of heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/10—Drying by heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/80—Shredding
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2206/00—Waste heat recuperation
- F23G2206/10—Waste heat recuperation reintroducing the heat in the same process, e.g. for predrying
Abstract
The invention discloses a heat storage baffling grading pretreatment module for electronic product hazardous waste treatment, which comprises a crushing component and a waste heat utilization component, wherein the waste heat utilization component is a section of pipeline pipe fitting, one end of the waste heat utilization component is connected with an exhaust port of a smelting furnace for electronic product hazardous waste treatment, the other end of the waste heat utilization component is connected with the atmosphere, the crushing component is provided with a feed opening, a feed opening of the crushing component is connected with the waste heat utilization component, and materials coming out of the crushing component pass through the waste heat utilization component to enter the smelting furnace. The crushing assembly comprises a machine shell, a crushing wheel, a motor and a material collecting pipe, wherein the crushing wheel is arranged in the machine shell, the crushing wheel is distributed from top to bottom, one end of the crushing wheel stretches out of the machine shell and is driven by the motor, the other end of the crushing wheel stretches out of the machine shell and is inserted into the material collecting pipe, the material collecting pipe is vertical or inclined, the bottom end of the material collecting pipe is connected with the waste heat utilization assembly, one end of the crushing wheel, which is inside and is inserted into the material collecting pipe, is provided with a core hole, and the core hole radially extends out of a plurality of material.
Description
Technical Field
The invention relates to the field of electronic product dangerous waste treatment, in particular to a heat storage baffling grading pretreatment module for electronic product dangerous waste treatment.
Background
When the electronic product is discarded after use, the electronic product cannot be discarded at will, a plurality of substances and elements damaging the environment are contained in the electronic product, and some heavy metals belong to dangerous waste categories in wastes.
The electronic product waste is refined to recover a lot of metal materials, and along with the increase of environmental awareness and the economic return of resource recycling, the metal recovery of the electronic product is more and more emphasized.
In the prior art, the recovery of electronic product wastes is mainly divided into a chemical method and a physical method, the chemical method is mainly hydrometallurgy, the secondary pollution generated by the chemical method is serious, the physical method is mainly in a separation and disassembly mode, but for some wastes which are combined with precision and are not easy to mechanically separate, such as a pcb (printed circuit board) and a chip body, element separation is carried out by smelting, a large amount of waste gas heat is wasted during smelting, and in addition, the materials are directly put into a smelting furnace, and some moisture carried in the materials can also interfere the smelting.
Disclosure of Invention
The invention aims to provide a heat storage baffling grading pretreatment module for hazardous waste treatment of electronic products, which is used for solving the problems in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a hierarchical preliminary treatment module of heat accumulation baffling for electronic product danger is useless, includes crushing unit and waste heat utilization subassembly, and the waste heat utilization subassembly is one section pipeline pipe fitting, and waste heat utilization subassembly one end is connected the useless smelting pot gas vent of handling of electronic product danger, and the atmosphere is connected to one end, and crushing unit has the dog-house, and the waste heat utilization subassembly is connected to the crushing unit feed opening, and the material that comes out from crushing unit passes the waste heat utilization subassembly and gets into in the smelting pot.
The electronic waste products thrown into the crushing assembly are crushed into particle powder, the crushed and perfect particles are thrown into the preheating utilization assembly, the preheating utilization assembly is a section of pipe body, the zigzag winding of the preheating utilization assembly advances, the bottom of the preheating utilization assembly is connected with the top of a furnace for smelting materials, high-temperature gas discharged from the top of the furnace enters the preheating utilization assembly and flows relatively to the materials, the high-temperature gas preheats the materials, moisture and volatile matters in the materials are evaporated, the moisture and the volatile matters are prevented from entering the furnace to cause adverse effects, the materials are also preheated, higher temperature is achieved when the materials enter the furnace, the temperature of the materials thrown into the furnace is prevented from influencing the original furnace, and the materials are not beneficial to smelting. And blowing air into the furnace by a blower to support combustion, and circulating hot waste gas through the preheating utilization assembly smelting furnace.
Further, crushing unit includes the casing, smash the wheel, motor and collecting pipe, set up a plurality ofly in the casing and take turns to crushing, a plurality ofly distribute from top to bottom crushing wheel, crushing wheel one end is stretched out outside the casing and by motor drive, the other end stretches out outside the casing and in inserting collecting pipe, collecting pipe is vertical or the slope is placed, waste heat utilization subassembly is connected to collecting pipe bottom, the one end that crushing wheel is inside and insert collecting pipe is equipped with the heart hole, the heart hole still radially extends a plurality of punishment in advance hole to crushing wheel on the surface of crushing portion.
The crushing precision of the successive thinning of a plurality of pairs of crushing wheels in the casing from top to bottom is realized, electronic product wastes are put into the crushing assembly from the upper part of the casing, are crushed by a plurality of stages of crushing wheels and then reach the lower part of a target particle size, enter a core hole from a material passing hole on the surface of the crushing wheels and then flow to the material collecting pipe which leads to the preheating utilization assembly, after the structure is arranged, the electronic product wastes fully ensure that only particles with the particle size reaching the requirement can be discharged into the preheating utilization assembly, and even if the particles reach the lower part of the casing when the particle size does not fall to the target particle size, the electronic product wastes cannot be discharged to the preheating utilization assembly, of course, some materials can reach the target particle size after being rolled by the two pairs of crushing wheels, can be discharged into the material collecting pipe in advance through the crushing wheels of the upper stage, and the incompletely crushed materials accumulated on the lower part of the casing are, automatic circulation of materials can be realized through equipment such as a material lifting machine and a spiral feeding machine. One end of each crushing wheel penetrates through the wall surface of the machine shell and is driven by a motor, and the motors can be respectively arranged on each pair of crushing wheels and can also obtain power from the same motor through belt transmission.
Furthermore, the crushing wheel crushes through a gear-shaped crushing part, one end of the material passing hole is connected with the core hole, and the other end of the material passing hole is connected with the tooth surface of the gear. The teeth of the gear-shaped crushing part have entrainment capacity, so that the gear-shaped crushing part has good suction capacity for large flat plate type electronic product wastes, and as long as one end of a flat plate is embedded into one tooth, the gear-shaped crushing part can be torn off when the teeth are meshed, and the gear-shaped crushing part cannot be discharged like biting things.
Preferably, one end of the material passing hole, which is positioned on the tooth surface of the gear, is provided with a choke. The material passing hole is connected to the core hole from the gear tooth surface, if the material passing hole keeps the same aperture, the particle materials can enter the material passing hole only by certain extrusion when entering the material passing hole from the gear tooth surface, the particle diameter of the particle materials is slightly larger than the aperture of the material passing hole at the gear tooth surface, the particle diameter of the particle materials slightly larger than the diameter of the end part of the material passing hole is blocked in the material passing hole after losing the extrusion force, the subsequent feeding is influenced, and the material passing hole has a choke at the gear tooth surface, so that even if the material particles are subjected to the choke which is passed by the extrusion, the material particles can roll down in the subsequent channel to reach the core hole with larger aperture, and then further reach the material collecting pipe, and the arrangement of the choke prevents the material particles from being blocked in the material passing hole.
Further, the preheating utilization assembly comprises a plurality of separating cylinders, a plurality of sections of mixing pipes and a blanking pipe; the separating cylinder comprises a cylinder body, an air outlet pipe, an air inlet pipe and a discharge port, the air outlet pipe extends out of the upper part of the cylinder body, the air outlet pipe enters the cylinder body from the side surface, and the discharge port is arranged at the bottom of the cylinder body;
according to the flowing direction of the exhaust gas of the smelting furnace, the separating cylinder sequentially becomes a first stage, a middle stage and a last stage, an air inlet pipe of the first stage is connected with an exhaust port of the smelting furnace, an air outlet pipe of the first stage is connected with an air inlet pipe of the middle stage through a mixing pipe, an air outlet pipe of the middle stage is connected with an air inlet pipe of the last stage through a mixing pipe, the air outlet pipe of the last stage faces to the external atmosphere or a waste gas recovery position, a discharge port of the first stage enters the smelting furnace through a blanking pipe, a discharge port of the middle stage is connected into the mixing pipe between the first stage and the smelting furnace through a blanking pipe, a discharge port of the last stage is connected into the mixing pipe between the first stage and the middle stage through a blanking;
the diameter of the blanking pipe is smaller than that of the mixing pipe.
Granular materials are discharged into the preheating utilization assembly, baffling is carried out in the preheating utilization assembly, materials with certain particle sizes are discharged from the crushing assembly through the discharging pipe into a mixing pipe between a final stage and an intermediate stage through the belt wrapping effect of air flow, the belt wrapping capacity of the air flow with high air speed is high, the belt wrapping capacity of the air flow with low air speed is low, the diameter of the mixing pipe is small, hot air discharged from the intermediate stage blows to the intermediate stage of the final stage to carry the materials discharged by the crushing assembly, the belt wrapping process is also a heat exchange process, after entering the final stage, the air speed is reduced, the materials are deposited to the bottom of the final stage, then the materials are discharged into the mixing pipe between the intermediate stage and a first stage, the materials are wrapped in the pipe to enter the intermediate stage, are discharged to the mixing pipe between the first stage and the smelting furnace, then enter the first stage, are separated and then flow into the smelting furnace, the temperature of the hot air is higher as the temperature of the materials is closer to the smelting, the higher the preheating of the material is, the higher the temperature of the material is, the high-temperature material is heated by high-heat air, the temperature near the final stage is lower, and the material which just enters the preheating utilization assembly at normal temperature can be well heated, so that the heat exchange in the whole process is as full as possible. The material is wrapped up in with the gas through baffling many times, and the heat transfer is abundant, has more heat transfer time than direct air current blows, and when the material was wrapped up in the area, it was the independence of being blown fully and separating into a granule, had great specific surface area to carry out the heat transfer moreover.
The preheating utilization assembly further comprises an induced draft fan, and the induced draft fan is arranged on the outer mixing pipe of the final stage.
The air flow in the preheating utilization assembly comes from a smelting furnace, the air flow is not enough as air flow circulating power by the air supply quantity of a blower, in order to provide the power for the air discharged from the preheating utilization assembly, the air pressure in the preheating utilization assembly is higher than the external atmospheric pressure, the blanking of the crushing assembly is influenced, after the air is added into an induced draft fan, the load of the blower is shared, the air pressure in the preheating utilization assembly is changed into a negative pressure state, and the material of the crushing assembly can smoothly enter the preheating utilization assembly.
Preferably, the cylinder is conical, the conical head of the cylinder faces downwards, the air inlet pipe enters the cylinder from the side face of the cylinder along the tangential direction of the cylinder, the lower part of the air outlet pipe extends into the cylinder, and the bottom end of the air outlet pipe is lower than the position where the air inlet pipe enters the cylinder in the height position.
The conical barrel has a better separation effect, after airflow carrying materials enters from the side face of the barrel along the tangential direction, the airflow spirals downwards, material particles cling to the inner wall face of the barrel and cannot reach the lower end inlet of the air inlet pipe, air discharged from the lower end inlet of the air inlet pipe is pure and free of the materials, and the materials flow to the lower end of the barrel and are discharged from the discharge hole.
Preferably, the inner wall of the mixing tube is provided with a plurality of salient points. The salient points on the inner wall of the mixing pipe can play a role of turbulence, so that airflow in the mixing pipe is disordered, the material is continuously overturned to make a round trip, and the heat exchange effect is enhanced.
Compared with the prior art, the invention has the beneficial effects that: the electronic product waste is continuously and finely crushed by a plurality of groups of crushing wheels arranged in pairs, and is discharged into the preheating utilization assembly after being crushed into a particle size below a certain particle size, fine granular materials are continuously wrapped, separated, wrapped and separated by high-temperature gas from a smelting furnace in the preheating utilization assembly, the fine particles are blown away into single bodies of one particle while being wrapped, the preheating is very sufficient, the contact time between airflow which moves in a zigzag manner and the materials is greatly prolonged and fully contacted, the gas temperature at the last-stage separation cylinder is low, the heat in the smelting furnace is fully recycled, and after moisture and volatile matters are fully evaporated in the preheating process, the impurities are prevented from entering the smelting furnace to cause smelting influence; the particle size of the crushed waste is changed to preheat different airflow velocities in the crushing assembly, so that the treatment capacity and the treatment rate of different waste treatment operations are adapted.
Drawings
In order that the present invention may be more readily and clearly understood, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings.
FIG. 1 is a schematic flow diagram of the present invention;
FIG. 2 is a schematic view of the shredder assembly of the present invention;
FIG. 3 is a view taken along line A-A of FIG. 2;
FIG. 4 is a schematic structural view of the separation cylinder of the present invention.
In the figure: 1-crushing component, 11-machine shell, 12-crushing wheel, 121-core hole, 122-material passing hole, 13-motor, 14-material collecting pipe, 2-waste heat utilization component, 21-separating cylinder, 211-final stage, 212-intermediate stage, 213-first stage, 2101-cylinder body, 2102-air outlet pipe, 2013-air inlet pipe, 2104-discharge port, 22-mixing pipe, 23-material discharging pipe, 26-induced draft fan, 8-smelting furnace and 9-blower.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
as shown in figure 1, a hierarchical preliminary treatment module of heat accumulation baffling for useless processing of electronic product danger, including crushing unit 1 and waste heat utilization subassembly 2, waste heat utilization subassembly 2 is one section pipeline pipe fitting, waste heat utilization subassembly 2 one end is connected the useless processing of electronic product danger and is used the smelting pot 8 gas vent, one end connects the atmosphere, crushing unit 1 has the dog-house, crushing unit 1 feed opening connects waste heat utilization subassembly 2, the material that comes out from crushing unit 1 passes waste heat utilization subassembly 2 and gets into in the smelting pot 8.
The electronic waste products thrown into the crushing assembly 1 are crushed into particle powder, the crushed and perfect particles are thrown into the preheating utilization assembly 2, the preheating utilization assembly 2 is a section of pipe body, the zigzag winding of the preheating utilization assembly advances, the bottom of the preheating utilization assembly is connected with the furnace top 8 for smelting materials, high-temperature gas discharged from the furnace top enters the preheating utilization assembly 2 and flows relatively to the materials, the high-temperature gas preheats the materials, moisture and volatile matters in the materials are evaporated, the moisture and the volatile matters are prevented from entering the furnace to cause adverse effects, the materials are also preheated, higher temperature is achieved when the materials enter the furnace 8, the materials thrown into the furnace 8 are prevented from influencing the temperature in the original furnace, and the smelting is not facilitated. The blower 9 blows air into the furnace to assist combustion, and hot waste gas forms circulation through the preheating utilization assembly 2 and the furnace 8.
As shown in fig. 2 and 3, the pulverizing assembly 1 includes a casing 11, a pulverizing wheel 12, a motor 13 and a material collecting pipe 14, a plurality of pairs of pulverizing wheels 12 are arranged in the casing 11, a plurality of pairs of pulverizing wheels 12 are distributed up and down, one end of the pulverizing wheel 12 extends out of the casing 11 and is driven by the motor 13, the other end extends out of the casing 11 and is inserted into the material collecting pipe 14, the material collecting pipe 14 is placed vertically or obliquely, the bottom end of the material collecting pipe 14 is connected with the waste heat utilization assembly 2, one end of the pulverizing wheel 12 inside and inserted into the material collecting pipe 14 is provided with a core hole 121, and the core hole 121 further radially extends out of a plurality of material passing holes 122 to the outer.
The crushing precision of the successive thinning of the plurality of pairs of crushing wheels 12 in the machine shell 11 is from top to bottom, electronic product waste is thrown into the crushing assembly 1 from the upper part of the machine shell 11, is crushed by the plurality of stages of crushing wheels 12 and then reaches below a target particle size, enters the core hole 121 from the material passing hole 122 on the surface of the crushing wheels 12 and then flows to the material collecting pipe 14, the material collecting pipe 14 leads to the preheating utilization assembly 2, after the structure is arranged, the situation that only particles with the particle size reaching the requirement can be discharged into the preheating utilization assembly 2 is fully ensured, even if the particle size reaches the lower part of the machine shell 11, the preheating utilization assembly 2 cannot be discharged is fully ensured, of course, some materials reach the target particle size after being rolled by the two pairs of crushing wheels 12, can be discharged into the material collecting pipe 14 in advance through the plurality of stages of crushing wheels 12 above, and are accumulated in the incompletely crushed materials at the lower part of, the materials are collected from a discharge port at the lower part of the machine shell 11 and are poured back to a feeding port at the upper part of the machine shell 11, and the automatic circulation of the materials can be realized through equipment such as a material lifting machine, a spiral feeding machine and the like. One end of each crushing wheel 12 penetrates through the wall surface of the machine shell 11 and is driven by a motor, and the motors 13 can be respectively arranged on each pair of crushing wheels 12 and can also obtain power from the same motor 13 through belt transmission.
As shown in fig. 3, the grinding wheel 12 is ground by a gear-shaped grinding portion, and one end of the feed hole 122 is connected to the core hole 121 and the other end is connected to the gear tooth surface. The teeth of the gear-shaped crushing part have entrainment capacity, so that the gear-shaped crushing part has good suction capacity for large flat plate type electronic product wastes, and as long as one end of a flat plate is embedded into one tooth, the gear-shaped crushing part can be torn off when the teeth are meshed, and the gear-shaped crushing part cannot be discharged like biting things.
One end of the material passing hole 122 on the tooth surface of the gear is provided with a choke. The material passing hole 122 is connected to the core hole 121 from the gear tooth surface, if the material passing hole 122 keeps the same aperture, the particle material may enter the material passing hole 122 from the gear tooth surface by being extruded to a certain degree, the particle diameter of the particle material is slightly larger than the aperture of the material passing hole 122 at the gear tooth surface, the material with the particle diameter slightly larger than the diameter of the end part of the material passing hole 122 is blocked in the material passing hole 122 after losing the extrusion force, the subsequent feeding is influenced, and a choke exists at the gear tooth surface of the material passing hole 122, so that even if the material particle is extruded to pass through the choke, the material particle can roll down in the subsequent channel to reach the core hole with larger aperture, and then further reach the material collecting pipe 14, and the arrangement of the choke prevents the material particle from being blocked in the material passing hole 122.
As shown in fig. 1 and 4, the preheating utilization assembly 2 includes a plurality of separation cylinders 21, a plurality of sections of mixing pipes 22 and a blanking pipe 23; the separating cylinder 21 comprises a cylinder 2101, an air outlet pipe 2102, an air inlet pipe 2103 and a discharge hole 2104, wherein the air outlet pipe 2102 extends out of the upper part of the cylinder 2101, the air outlet pipe 2102 enters the cylinder 2101 from the side, and the discharge hole 2104 is arranged at the bottom of the cylinder 2101;
according to the flow direction of the exhaust gas of the smelting furnace 8, the separating cylinder 21 sequentially becomes a first stage 213, an intermediate stage 212 and a last stage 213, an air inlet pipe 2103 of the first stage 213 is connected with an air outlet of the smelting furnace 8, an air outlet pipe 2102 of the first stage 213 is connected with an air inlet pipe 2103 of the intermediate stage 212 through a mixing pipe 22, the air outlet pipe 2102 of the last stage 213 faces towards the outside atmosphere or an exhaust gas recovery part, an outlet port 2104 of the first stage 213 enters the smelting furnace 8 through a discharging pipe 23, an outlet port 2104 of the intermediate stage 212 is connected into the mixing pipe 22 between the first stage 213 and the smelting furnace 8 through the discharging pipe 23, the outlet port 2104 of the last stage 211 is connected into the mixing pipe 22 between the first stage 213 and the intermediate stage 212 through the discharging pipe 23, and a discharging port of the crushing assembly 1 is connected into the mixing pipe 22 between the last stage 211 and the intermediate stage 212 through the discharging pipe 23;
the diameter of the feed pipe 23 is smaller than that of the mixing pipe 22.
The granular materials are discharged into the preheating utilization component 2, baffling is carried out in the preheating utilization component 2, the airflow with high wind speed has high belt wrapping capacity, the airflow with low wind speed has low belt wrapping capacity, and the granules settle, as shown in figure 1, the materials with certain particle sizes are discharged from the crushing component 1 through the blanking pipe 23 and enter the mixing pipe 22 between the last stage 211 and the middle stage 212, the diameter of the mixing pipe 22 is smaller, the hot air discharged from the middle stage 212 is blown to the middle process of the last stage 211 to carry the materials discharged from the crushing component 1, the belt wrapping process is a heat exchange process, after entering the last stage 211, the wind speed is reduced, the materials are deposited to the bottom of the last stage 211 and then discharged into the mixing pipe 22 between the middle stage 212 and the first stage 213, the materials are wrapped in the middle stage 212 and enter the middle stage 212, and are separated in the middle stage 212 and discharged into the mixing pipe between the first stage 213 and the smelting furnace 8, then the material enters the first stage 213 for separation and flows into the smelting furnace 8, the closer to the smelting furnace 8, the higher the hot air temperature is, the higher the preheating of the material is, the high-temperature material is heated by the high-heat air, the temperature near the last stage 211 is lower, the material which just enters the preheating utilization assembly 2 at normal temperature can be well heated, and the heat exchange in the whole process is as full as possible. The material is wrapped up in with the gas through baffling many times, and the heat transfer is abundant, has more heat transfer time than direct air current blows, and when the material was wrapped up in the area, it was the independence of being blown fully and separating into a granule, had great specific surface area to carry out the heat transfer moreover.
As shown in fig. 1, the pre-heat utilization assembly 2 further includes an induced draft fan 26, and the induced draft fan 26 is disposed on the mixing pipe 22 outward of the final stage 211.
The air flow in the preheating utilization component 2 comes from the smelting furnace 8, the air volume of the blower 9 is not enough as the air flow circulating power, in order to provide the power for the gas discharged from the preheating utilization component 2, the gas pressure in the preheating utilization component 2 is higher than the external atmospheric pressure, the blanking of the crushing component 1 is influenced, after the draught fan 26 is added, the load of the blower 9 is shared, the gas pressure in the preheating utilization component 2 is changed into a negative pressure state, and the material of the crushing component 1 can smoothly enter the preheating utilization component 2.
As shown in FIG. 4, the barrel 2101 is tapered with its head facing downward, the air inlet pipe 2103 enters the barrel 2101 tangentially from the side of the barrel 2101, the lower part of the air outlet pipe 2102 penetrates into the interior of the barrel 2101 and the bottom end is lower in height than the position where the air inlet pipe 2103 enters the barrel 2101.
The conical barrel 2101 has a better separation effect, after air flow carrying materials enters from the side surface of the barrel 2101 along the tangential direction, the air flow spirals downwards, particles of the materials cling to the inner wall surface of the barrel 2101 and cannot reach the lower end inlet of the air inlet pipe 2103, air discharged from the lower end inlet of the air inlet pipe 2103 is pure and free of the materials, and the materials flow to the lower end of the barrel 2101 and are discharged from the discharge port 2104.
The inner wall of the mixing tube 22 is provided with a plurality of salient points. The salient point on the inner wall of the mixing tube 22 can play a role of turbulence, so that the airflow in the mixing tube 22 is turbulent, the material is continuously overturned to make a round trip, and the heat exchange effect is enhanced.
The main use process of the device is as follows: the electronic product waste to be processed is put into the crushing assembly 1, is crushed into materials with certain particle sizes by the plurality of crushing wheels 12, is discharged into the preheating utilization assembly 2 through the material passing hole 122, the core hole 121 and the material collecting pipe 14, is bent and forwards in the preheating utilization assembly 2 and is wrapped by airflow for a plurality of times, and is discharged into the smelting furnace 8 from the bottom of the preheating utilization assembly 2 after moisture and volatile matters are fully evaporated.
Example two:
compared with the first embodiment, the crushing wheel 12 is changed into a cylinder from a gear-shaped crushing part, a thin-wall sleeve with a plurality of bulges and through holes on the outer surface is sleeved on the crushing wheel 12, and the through holes of the thin-wall sleeve correspond to the material passing holes 122.
Set up to this structure, can modify the material granule particle diameter of arranging toward preheating and utilizing the subassembly through the thin wall cover that has different through-hole apertures, in preheating and utilizing subassembly 2, whether can wrap up in of air current and take up the material and air current velocity of flow and material specific surface area relevant, the air current velocity of flow is big more, it is stronger to wrap up in the area ability, material specific surface area is big more easily wrapped up in and is taken, when the gas flow that smelting pot 8 passed through, should reduce simultaneously and arrange into the granularity of preheating and utilizing the interior material of subassembly 2, so that realize the tortuous area of wrapping up in, the effect of convection heat transfer. The crushing assembly 1 needs to crush the material more finely.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (9)
1. The utility model provides a hierarchical preliminary treatment module of heat accumulation baffling for useless processing of electronic product danger which characterized in that: the heat storage baffling grading pretreatment module comprises a crushing assembly (1) and a waste heat utilization assembly (2), wherein the waste heat utilization assembly (2) is a section of pipeline pipe fitting, one end of the waste heat utilization assembly (2) is connected with an exhaust port and one end of a smelting furnace (8) for dangerous waste treatment of electronic products, the atmosphere is connected to the crushing assembly (1), the feed opening of the crushing assembly (1) is connected with the waste heat utilization assembly (2), and materials coming out of the crushing assembly (1) penetrate through the waste heat utilization assembly (2) to enter the smelting furnace (8).
2. The heat storage baffling grading pretreatment module for the hazardous waste treatment of electronic products according to claim 1, characterized in that: crushing unit (1) includes casing (11), crushing wheel (12), motor (13) and collecting pipe (14), set up in casing (11) a plurality of to crushing wheel (12), a plurality of distribute from top to bottom to crushing wheel (12), crushing wheel (12) one end is stretched out casing (11) and is outer and by motor (13) drive, and the other end stretches out casing (11) and outer and insert collecting pipe (14) in, collecting pipe (14) are vertical or the slope is placed, and waste heat utilization subassembly (2) is connected to collecting pipe (14) bottom, the one end in crushing wheel (12) inside and the inserting collecting pipe (14) is equipped with heart hole (121), and heart hole (121) still radially extend on a plurality of punishment in advance hole (122) to the surface of crushing portion of crushing wheel (12).
3. The heat storage baffling grading pretreatment module for the hazardous waste treatment of electronic products according to claim 2, characterized in that: the crushing wheel (12) is crushed through a gear-shaped crushing part, one end of the material passing hole (122) is connected with the core hole (121), and the other end of the material passing hole is connected with the tooth surface of the gear.
4. The heat storage baffling grading pretreatment module for the hazardous waste treatment of electronic products according to claim 3, characterized in that: one end of the material passing hole (122) on the gear tooth surface is provided with a choke.
5. The heat storage baffling grading pretreatment module for the hazardous waste treatment of electronic products according to claim 2, characterized in that: the crushing wheel (12) is a cylinder, a thin-wall sleeve with a plurality of bulges and through holes on the outer surface is sleeved on the crushing wheel (12), and the through holes of the thin-wall sleeve correspond to the material passing holes (122).
6. The heat storage baffling grading pretreatment module for the hazardous waste treatment of electronic products according to claim 1, characterized in that: the preheating utilization assembly (2) comprises a plurality of separating cylinders (21), a plurality of sections of mixing pipes (22) and a blanking pipe (23); the separating cylinder (21) comprises a cylinder body (2101), an air outlet pipe (2102), an air inlet pipe (2103) and a discharge hole (2104), wherein the air outlet pipe (2102) extends out of the upper part of the cylinder body (2101), the air outlet pipe (2102) enters the cylinder body (2101) from the side surface, and the discharge hole (2104) is arranged at the bottom of the cylinder body (2101);
according to the flow direction of the exhaust gas of the smelting furnace (8), the separating cylinder (21) sequentially becomes a first stage (213), an intermediate stage (212) and a final stage (213), an air inlet pipe (2103) of the first stage (213) is connected with an air outlet of the smelting furnace (8), an air outlet pipe (2102) of the first stage (213) is connected with the air inlet pipe (2103) of the intermediate stage (212) through a mixing pipe (22), the air outlet pipe (2102) of the intermediate stage (212) is connected with the air inlet pipe (2103) of the final stage (213) through the mixing pipe (22), the air outlet pipe (2102) of the final stage (213) faces towards the external atmosphere or an exhaust gas recovery part, an outlet (2104) of the first stage (213) enters the smelting furnace (8) through a discharging pipe (23), an outlet (2104) of the intermediate stage (212) is connected into the mixing pipe (22) between the first stage (213) and the smelting furnace (8) through the discharging pipe (23), and the outlet (2104) of the final stage (211) is connected with the intermediate stage (213) through the discharging pipe (213) 212) The feed opening of the crushing assembly (1) is connected to the mixing pipe (22) between the last stage (211) and the middle stage (212) through a feed pipe (23) in the mixing pipe (22) between;
the diameter of the blanking pipe (23) is smaller than that of the mixing pipe (22).
7. The heat storage baffling grading pretreatment module for the hazardous waste treatment of electronic products according to claim 6, characterized in that: the preheating utilization assembly (2) further comprises an induced draft fan (26), and the induced draft fan (26) is arranged on the mixing pipe (22) outside the final stage (211).
8. The heat storage baffling grading pretreatment module for the hazardous waste treatment of electronic products according to claim 6, characterized in that: the barrel (2101) is conical, the conical head faces downwards, the air inlet pipe (2103) enters the barrel (2101) from the side face of the barrel (2101) along the tangential direction of the barrel, the lower part of the air outlet pipe (2102) extends into the barrel (2101), and the bottom end of the air outlet pipe (2102) is lower than the position of the air inlet pipe (2103) entering the barrel (2101) in height.
9. The heat storage baffling grading pretreatment module for the hazardous waste treatment of electronic products according to claim 6, characterized in that: the inner wall of the mixing tube (22) is provided with a plurality of salient points.
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| CN201911270648.XA CN110883066B (en) | 2019-12-12 | 2019-12-12 | A hierarchical preliminary treatment module of heat accumulation baffling for useless processing of electronic product danger |
| CN202110700425.3A CN113446607A (en) | 2019-12-12 | 2019-12-12 | Heat storage baffling grading pretreatment module for hazardous waste treatment of electronic products |
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| CN201911270648.XA CN110883066B (en) | 2019-12-12 | 2019-12-12 | A hierarchical preliminary treatment module of heat accumulation baffling for useless processing of electronic product danger |
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Also Published As
| Publication number | Publication date |
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| CN113446607A (en) | 2021-09-28 |
| CN110883066B (en) | 2021-07-30 |
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