CN106378232A - Temperature-controllable electronic waste crushing device and temperature control method thereof - Google Patents
Temperature-controllable electronic waste crushing device and temperature control method thereof Download PDFInfo
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- CN106378232A CN106378232A CN201610938211.9A CN201610938211A CN106378232A CN 106378232 A CN106378232 A CN 106378232A CN 201610938211 A CN201610938211 A CN 201610938211A CN 106378232 A CN106378232 A CN 106378232A
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000010793 electronic waste Substances 0.000 title abstract description 6
- 238000010992 reflux Methods 0.000 claims abstract description 43
- 230000001172 regenerating effect Effects 0.000 claims abstract description 18
- 238000001816 cooling Methods 0.000 claims abstract description 15
- 238000009833 condensation Methods 0.000 claims abstract description 10
- 230000005494 condensation Effects 0.000 claims abstract description 10
- 239000002699 waste material Substances 0.000 claims description 38
- 239000012530 fluid Substances 0.000 claims description 26
- 239000000463 material Substances 0.000 claims description 13
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000011897 real-time detection Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 13
- 238000010438 heat treatment Methods 0.000 abstract description 5
- 230000009931 harmful effect Effects 0.000 abstract description 4
- 231100000331 toxic Toxicity 0.000 abstract description 3
- 230000002588 toxic effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 15
- 239000010813 municipal solid waste Substances 0.000 description 6
- 238000010008 shearing Methods 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 4
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- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical compound C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
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- 229920005989 resin Polymers 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
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- 235000010290 biphenyl Nutrition 0.000 description 1
- 239000004305 biphenyl Substances 0.000 description 1
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- 239000000460 chlorine Substances 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/02—Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft
- B02C13/04—Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft with beaters hinged to the rotor; Hammer mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C25/00—Control arrangements specially adapted for crushing or disintegrating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C2201/00—Codes relating to disintegrating devices adapted for specific materials
- B02C2201/06—Codes relating to disintegrating devices adapted for specific materials for garbage, waste or sewage
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a temperature-controllable electronic waste crushing device which is composed of a crusher 1 and a temperature control device. The temperature control device comprises a temperature sensor 2, a condensing pipe group 3, condensing pipes 4, a condensate cooling and regenerating device 5, a reflux condensation pump set 6 and a temperature control system 7, wherein the condensing pipe group 3 is arranged in the cavity wall of the crusher, and the temperature sensor 2 is arranged on the inner wall of a cavity of the crusher; the reflux condensation pump set 6 and the condensate cooling and regenerating device 5 are arranged outside the cavity of the crusher, the reflux condensation pump set 6 is connected with the condensate cooling and regenerating device 5 and the condensing pipe group 3 through the condensing pipes, and the other end of the condensing pipe group 3 is connected back to the condensate cooling and regenerating device 5 through the condensing pipes 4, so that a closed-loop condensing system is formed; and the temperature control system 7 is connected with the temperature sensor 2 and the reflux condensation pump set 6. According to the temperature-controllable electronic waste crushing device, the heating problem in the electronic waste crushing process is solved, and toxic and harmful gas is effectively avoided.
Description
Technical field
The invention belongs to solid waste recovery technology field, in particular it relates to a kind of electron wastes of controllable temperature break
Crushing device and its temperature control method.
Background technology
In recent years, developing rapidly with information industry, the update of electric equipment products is more and more faster, electronic product
Use life cycle shorter and shorter, the average life of a computer was become present 4 years by former 10 years, and mobile phone is then
It is eliminated after using 2 years.Additionally, the renewal speed of the electrical equipment such as TV, electric refrigerator, air-conditioning is also being accelerated.People are in experience
That new and high technology brings convenient while also create substantial amounts of modern times Junk electronic garbage.China's electron wastes
Yield annual all increasing with surprising rapidity, and in waste and old electric electric equipment products, have substantial amounts of metal and nonmetallic money
Source, e.g., contains multiple non-ferrous metal such as copper, aluminum, nickel, lead, silicon in waste printed circuit board, and the non-metallic material such as plastics, glass fibre
Material.A large amount of aluminums and copper parts are contained in waste refrigerators, and the Renewable resource such as plastics, glass, polyurethane foam.Electricity
The discarding of sub- garbage causes substantial amounts of waste of material, there is pollution environment and the risk of infringement health simultaneously.Therefore,
Electron wastes are carried out with reasonable, safe disposal, the metal reclaim, being contained using it and nonmetallic resource, will produce considerable
Economic benefit and significant environmental benefit, the sustainable development to China has great importance.
With conventional broken material（Ore etc.）Difference, electron wastes constituent is complicated, and has the broken of its uniqueness
Characteristic, such as circuit board are mainly made up of the metal electron device such as copper cash of attachment on fortified resin plate and resin plate, and hardness is relatively
Height, toughness is stronger, and common squeezing action is not allowed broken, and has fibre structure in the substrate of most electronic devices and components,
This structure is more prone to broken under shear force, therefore the disintegrating machine with shearing force as predominant intermolecular forces, it is more suitable for electronics
Garbage broken.In addition, we have discovered that, integrate impact comminution effect and ablation hammer mill especially
It is suitable for electron wastes are crushed.During hammer mill work, motor rotor driven makees high-speed rotation, and material is carried out
Impact, electron wastes be subject to high-speed motion tup hit, impact, shearing, abrasive action and pulverize to complete shattering process.
But, because the high speed impact of rotor and material can produce substantial amounts of heat in shattering process, so that broken built-in temperature liter
Height, and plastics containing in electron wastes etc. can melt because temperature raises, crack even under high-temperature condition, discharge many chlorine
The toxic and harmfuls such as biphenyl, PBBs, two English, produce serious harm to environment and human body, therefore, to electronic waste
Temperature in thing disintegrating machine is controlled becoming the problem of urgent need to resolve.
Patent of invention《A kind of refuse grinder》（Zhang Jianping, Hang Bing, Zhang Tianming, CN101549315）Propose a kind of rubbish
Rubbish disintegrating machine, by the groove of the blade row frame in improved casing and staggered arrangement, makes disintegrating machine cutter head be difficult to wear and tear, extends
Service life, but without reference to the solution with regard to heating problem in material shattering process.Utility model《A kind of low temperature roll-type
Disintegrating machine》（Wu Xuanman, CN204638265U）Propose a kind of cryogenic pulverization machine, make use of the ventilation of cracking cabin four wall to improve machine
Heating problem during device work, but this kibbler roll is not particularly suited for electron wastes, and aeration-cooling mode is simultaneously
The safe temperature requiring when electron wastes crush can not be met.Hereinafter invent and all mention disintegrating machine, but be all to focus on improving breaking
Broken efficiency and service life, are not related to how to process the problem of heating in shattering process：Patent《Refuse grinder》
（Zhang Jianping, Hang Bing, Zhang Tianming, CN201394489）；Patent《Refuse grinder》（Money disk China, Zhang Jianping, Hang Bin,
CN2740289）Deng.
In sum, electron wastes process disposal needs one kind material shattering process can be carried out temperature controlled have
The new type crushing machine of condensing units, to realize environmental protection, harmlessly to carry out break process for electron wastes.
Content of the invention
The technical problem to be solved is overcome existing electron wastes specialty disintegrating apparatus in short supply and broken
The defect of crushing device temperature control technique and deficiency, provide one kind electron wastes shattering process can be carried out temperature controlled have cold
The new type crushing machine of solidifying device, to realize environmental protection, harmlessly to carry out break process for electron wastes；And this disintegrating machine can
To integrate impact comminution effect and ablation, electron wastes are crushed, realizes more preferable crushing effect.This
Bright apparatus structure is simple, and flexible operation can be suitably used for different breaking temperature and requires.
It is an object of the invention to provide a kind of electron wastes breaker of controllable temperature.
It is a further object of the present invention to provide the temperature control method of said apparatus.
The above-mentioned purpose of the present invention is to give by the following technical programs to realize.
A kind of electron wastes breaker of controllable temperature, is made up of disintegrating machine 1 and temperature regulating device, described temperature regulating device bag
Include temperature sensor 2, condensing tube group 3, condensing tube 4, condensed fluid cooling regenerating unit 5, condensing reflux pump group 6 and temperature control system
System 7；Described condensing tube group 3 is arranged in disintegrating machine cavity wall, and described temperature sensor 2 is arranged on disintegrating machine cavity inner wall；Institute
State condensing reflux pump group 6 and condensed fluid cooling regenerating unit 5 is arranged on broken machine cavity in vitro, condensing reflux pump group 6 passes through condensation
Pipe cools down regenerating unit 5 with condensed fluid respectively and condensing tube group 3 is connected, and the other end of condensing tube group 3 is further through 4 times companies of condensing tube
Cool down regenerating unit 5 to condensed fluid, thus forming a closed loop condenser system；Temperature control system 7 respectively with temperature sensor 2
Connect with condensing reflux pump group 6.
Preferably, described condensing tube group 3 includes some set condensing tubes.
Preferably, described condensing reflux pump group 6 includes some set condensing reflux pumps, and often set condensing reflux pump each and condenses
Condensing tube in pipe group 3 connects.
It is highly preferred that described condensing tube group 3 includes at least 3 sets condensing tubes, described condensing reflux pump group 6 at least includes 3 sets
Condensing reflux pump.
It is highly preferred that often set condensing reflux pump and the often independent unit of set condensing tube composition, between each unit can individually or
Work in combination；Can need to be condensed using the condensing tube of different group numbers according to thermoregulator, to reach expected cooling effect
Really.
Preferably, described condensing tube group 3 and condensing tube 4 are made up of the good material of heat conductivility.
It is highly preferred that described material is copper tube, to increase heat transfer efficiency, make condensation effect more preferably.
Preferably, described condensed fluid is aqueous water.
Preferably, described condensing reflux pump group 6 scalable flow velocity, by using cooperatively from the condensing tube of different groups of numbers, essence
Really temperature control.
Preferably, described disintegrating machine 1 is hammer mill.
Preferably, described temperature sensor 2 is thermocouple.
The temperature control method of said apparatus, during described controllable temperature electron wastes breaker work, on disintegrating machine stove inwall
Temperature sensor 2 real-time detection in-furnace temperature and temperature information is fed back to temperature control system 7, set when in-furnace temperature exceedes
During the temperature limit put, temperature control system 7 sends instruction and controls condensing reflux pump group 6 to start working, using condensed fluid cold
Circulation in solidifying pipe is lowered the temperature to disintegrating machine.
Preferably, the temperature limit of described setting is 60 DEG C.
Preferably, described temperature limit arranges multiple ranks, enable under different temperatures varying number condensing reflux pump and
Condensing tube is operated；At the same time it can also by adjusting the different condensing tube group number of the flow velocity cooperation of condensing reflux pump group 6 Lai smart
Really temperature control.
It is highly preferred that specifically when disintegrating machine in-furnace temperature is 60 DEG C～80 DEG C, using one group of condensing reflux pump and cold
Solidifying pipe is condensed, and temperature often raises 50 DEG C increases by one group of condensing reflux pump and condensing tube entrance work.
Controllable temperature of the present invention electron wastes breaker work when, electron wastes from disintegrating machine suitable for reading enter
Enter, the rotor of disintegrating machine rotates under the drive of motor, drive the quartering hammer on disk quickly to rotate to the electronics in nacelle
Garbage carries out shearing, broken, and electron wastes are subject to the tup impulsive force of high-speed motion, shearing force, abrasive power effect and powder
Broken, the little particle obtaining enters splicing groove by the sieve plate of bottom, is delayed on sieve plate more than the coarse granule of screen size and continues
The continuous impact being subject to tup and grinding, the little particle after crushing can be used as processing further（As sorting process etc.）.Broken
Using the thermocouple on disintegrating machine inwall, internal temperature is monitored during broken, thermocouple will be anti-for the temperature in crusher chamber body
Feed temperature control system, after temperature exceedes certain limit, using pump, condensed fluid is passed through condensing tube in disintegrating machine wall to broken
Broken machine is lowered the temperature, and changes for disintegrating machine inside real time temperature and is controlled using the condensing tube of different group numbers, simultaneously
The flow velocity of condensed fluid can be controlled to reach expected condensation effect by adjusting pump.
Specifically, main include following some：
（1）Electron wastes are sent in broken machine cavity body, and starts disintegrating machine, make rotor drive the quartering hammer on disk to start
Rotation starts to crush, start-up temperature control system simultaneously, and the thermocouple on disintegrating machine inwall starts the temperature in cavity is carried out
Monitor and feed back to system.
（2）When the temperature that temperature control system detects in crusher chamber body exceedes certain limit, condensing reflux system is certainly
Move and bring into operation, reflux pump drives condensed fluid to flow in the condensing tube in disintegrating machine cavity wall, is carried out in disintegrating machine with reaching
Cooling purpose, simultaneously temperature control system the cooling-down effect of condensing reflux is detected and is made adjustment, include adjust
The flow velocity of condensed fluid and the group number of condensing tube work.
（3）Condensed fluid heats up in reflux course, gasify after pump out through reflux pump after enter condensed fluid regenerative system, again
Cooling returns to original state, is then again introduced into the backflow that condensing tube carries out next time.
The present invention compared with prior art, has the advantages that：
（1）The present invention is flowed back by increase condensing tube in disintegrating machine wall and with condensed fluid, solves in electron wastes
The heating problem of material during crusher in crushing, thus solve due to temperature raise make plastics materials crack produce poisonous,
The problem of harmful gass.
（2）Apparatus of the present invention using the condensing tube of different group numbers and can adjust cold according to the situation of disintegrating machine internal heat generation
The flow velocity of lime set, thus reaching the cooling-down effect for different situations, being capable of energy saving effectively.
（3）Apparatus of the present invention can integrate impact comminution effect and ablation, and electron wastes are crushed,
Realize more preferable crushing effect.
Brief description
Fig. 1 is the electron wastes breaker structural representation of controllable temperature of the present invention.
Fig. 2 is the structural representation of the electron wastes breaker of embodiment 1 controllable temperature.
Caption：1- breaking machine；2- temperature sensor；3A, 3B, 3C-A, B, C group condensing tube；4- condensing tube；5- condensed fluid is cold
But regenerating unit；6- condensing reflux pump group；7- temperature control system；8- liner plate；9- shock plate；10- quartering hammer；11- sieve plate；
12- splicing groove；13- electron wastes to be broken；14- crushes rear electron wastes；15- disk；16- connects leading of thermocouple
Line；The in figure direction of arrow is designated as the flow direction of condensed fluid.
Specific embodiment
With reference to Figure of description and specific embodiment, the present invention is made and further elaborating, described embodiment
It is served only for explaining the present invention, be not intended to limit the scope of the present invention.Unless stated otherwise, reagent of the present invention, side
Method and equipment are the art conventional reagent, method and apparatus.
Embodiment 1
A kind of electron wastes breaker of controllable temperature, is made up of hammer mill 1 and temperature regulating device.Described hammer mill
1 includes liner plate 8, shock plate 9, quartering hammer 10, sieve plate 11, splicing groove 12 and disk 15.Described temperature regulating device include thermocouple 2,
Condensing tube group 3, condensing tube 4, condensed fluid cooling regenerating unit 5, condensing reflux pump group 6 and temperature control system 7；Described temperature passes
Sensor 2 and condensing tube group 3 are arranged on disintegrating machine cavity inner wall；Described condensing reflux pump group 6 and condensed fluid cooling regenerating unit 5
It is arranged on broken machine cavity external, condensing reflux pump group 6 is passed through condensing tube and cooled down regenerating unit 5 and condensing tube group with condensed fluid respectively
3 are connected, and the other end of condensing tube group 3 links condensed fluid cooling regenerating unit 5 for 4 times further through condensing tube, thus form one closing
Ring condenser system；Temperature control system 7 is connected with thermocouple 2 and condensing reflux pump group 6 respectively.
Described condensing tube group 3 is made up of 3 sets of independent condensing tube 3A, 3B, 3C, can each separately or combined work, and often
Set condensing tube is all connected with independent condensing reflux pump A, reflux pump B, reflux pump C.
Described condensing tube group 3 and condensing tube 4 are made by copper tube, and heat conductivility is good, to increase heat transfer efficiency, makes cold
Solidifying better.
Described condensing reflux pump group 6 scalable flow velocity, by using cooperatively from the condensing tube of different groups of numbers, accurate temperature controlling.
During disintegrating machine work, electron wastes 13 are sent in disintegrating machine, from entrance suitable for reading, rotor is in the drive of motor
Lower quick rotation, drive disk 15 on quartering hammer 10 rotate, quartering hammer with quick with electron wastes, liner plate 8, shock plate 9
Impact, shearing, grind, make the electron wastes of bulk be fractured into little fragment, by the sieve plate 11 of crusher lower, drop
In splicing groove 12, it is collected process as the electron wastes 14 after broken.During disintegrating machine ran, can produce big
The heat of amount, can timely and effectively reduce disintegrating machine operating temperature by temperature control equipment, the intensification slowing down motor causes
Ageing equipment, be conducive to the long-time stable of equipment to work, and be prevented effectively from toxic and harmful produce.
In disintegrating machine running, there are different modes of operation for condenser system.
（1）In disintegrating machine running, by condensed fluid（As aqueous water.）Be passed through condensing tube 3A in disintegrating machine wall, 3B,
In 3C, and drive condensate circulation with reflux pump.Using the thermocouple on stove inwall, real time temperature in stove is detected simultaneously,
It is to be condensed using A group condensing tube when 60 DEG C～80 DEG C in stove, temperature often raises 50 DEG C increases by one group of condensing tube entrance work
Make, to reach effective temperature control effect.
（2）When the condensing tube and condensation effect increasing all groups of numbers can not reach the situation of expected requirement, can pass through
The flow velocity adjusting pump makes condensate flow-rate accelerate, thus strengthening condensation effect.
（3）In disintegrating machine real work, can using the condensing tubes of different group numbers with adjust condensate flow-rate this two
Plant method cross-reference, while for example with A, B group condensing tube, adjust its condensate flow-rate, so can be more accurately right
The operating temperature of disintegrating machine is controlled, to reach more preferable treatment effect.
Obviously, above-described embodiment is only intended to clearly illustrate example of the present invention, and is not to the present invention
The restriction of embodiment.For the person of ordinary skill of the art, can also do on the basis of described above and thinking
Go out change or the variation of other multi-forms, there is no need to be exhaustive to all of embodiment.All in the present invention
Spirit and principle within any modification, equivalent and improvement of being made etc., should be included in the guarantor of the claims in the present invention
Within the scope of shield.
Claims (10)
1. a kind of electron wastes breaker of controllable temperature is it is characterised in that by disintegrating machine（1）With temperature regulating device composition, institute
State temperature regulating device and include temperature sensor（2）, condensing tube group（3）, condensing tube（4）, condensed fluid cooling regenerating unit（5）, condensation
Backflow pump group（6）And temperature control system（7）；Described condensing tube group（3）It is arranged in disintegrating machine cavity wall, described temperature sensor
（2）It is arranged on disintegrating machine cavity inner wall；Described condensing reflux pump group（6）Cool down regenerating unit with condensed fluid（5）It is arranged on brokenly
Broken machine cavity is external, condensing reflux pump group（6）Regenerating unit is cooled down with condensed fluid respectively by condensing tube（5）With condensing tube group（3）
It is connected, condensing tube group（3）The other end further through condensing tube（4）Return and link condensed fluid cooling regenerating unit（5）, thus forming one
Individual closed loop condenser system；Temperature control system（7）Respectively with temperature sensor（2）With condensing reflux pump group（6）Connect.
2. device according to claim 1 is it is characterised in that described condensing tube group（3）Including some set condensing tubes.
3. device according to claim 1 is it is characterised in that described condensing reflux pump group（6）Condense back including some sets
Stream pump, often set condensing reflux pump is each and condensing tube group（3）In condensing tube connect.
4. device according to claim 3 it is characterised in that often set condensing reflux pump with often set condensing tube composition independent
Unit, can work between each unit alone or in combination.
5. device according to claim 1 is it is characterised in that described condensing tube group（3）And condensing tube（4）By heat conductivility
Good material is made.
6. device according to claim 5 is it is characterised in that described material is copper tube.
7. device according to claim 1 is it is characterised in that described condensed fluid is aqueous water.
8. device according to claim 1 is it is characterised in that described condensing reflux pump group（6）Scalable flow velocity.
9. device according to claim 1 is it is characterised in that described disintegrating machine（1）For hammer mill.
10. the arbitrary described device of claim 1～9 temperature control method it is characterised in that device work when, disintegrating machine stove inwall
On temperature sensor（2）Temperature information is simultaneously fed back to temperature control system by real-time detection in-furnace temperature（7）, work as in-furnace temperature
Exceed setting temperature limit when, temperature control system（7）Send instruction and control condensing reflux pump group（6）Start working, utilize
Circulation in condensing tube for the condensed fluid is lowered the temperature to disintegrating machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610938211.9A CN106378232A (en) | 2016-10-25 | 2016-10-25 | Temperature-controllable electronic waste crushing device and temperature control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610938211.9A CN106378232A (en) | 2016-10-25 | 2016-10-25 | Temperature-controllable electronic waste crushing device and temperature control method thereof |
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| CN106378232A true CN106378232A (en) | 2017-02-08 |
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|---|---|---|---|
| CN201610938211.9A Pending CN106378232A (en) | 2016-10-25 | 2016-10-25 | Temperature-controllable electronic waste crushing device and temperature control method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108493085A (en) * | 2018-03-08 | 2018-09-04 | 中山大学 | A kind of old and useless fluorescent lamp glass tube green reclaim system and method |
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| JPH05220417A (en) * | 1992-02-10 | 1993-08-31 | Matsushita Electric Ind Co Ltd | Cutting device |
| UA12694U (en) * | 2005-09-07 | 2006-02-15 | Mykola Frantsovych Rozhkivskyi | Method of control of working process of rozhkivskyi's direct-flow grateless hammer mill |
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