CN111841726A - Nitrogen oxygen-free crushing equipment for lithium battery recovery and use method - Google Patents
Nitrogen oxygen-free crushing equipment for lithium battery recovery and use method Download PDFInfo
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- CN111841726A CN111841726A CN202010635805.9A CN202010635805A CN111841726A CN 111841726 A CN111841726 A CN 111841726A CN 202010635805 A CN202010635805 A CN 202010635805A CN 111841726 A CN111841726 A CN 111841726A
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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
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/02—Crushing or disintegrating by roller mills with two or more rollers
- B02C4/08—Crushing or disintegrating by roller mills with two or more rollers with co-operating corrugated or toothed crushing-rollers
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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
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/04—Safety devices
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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
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
- B02C23/24—Passing gas through crushing or disintegrating zone
- B02C23/34—Passing gas through crushing or disintegrating zone gas being recirculated to crushing or disintegrating zone
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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
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/02—Crushing or disintegrating by roller mills with two or more rollers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/54—Reclaiming serviceable parts of waste accumulators
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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
- 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
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- 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
- Y02W30/84—Recycling of batteries or fuel cells
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Abstract
The invention discloses nitrogen anaerobic crushing equipment for lithium battery recovery, which comprises a nitrogen making machine, a nitrogen storage tank, a nitrogen compressor, a nitrogen concentration measuring instrument, a nitrogen distribution mechanism, a crusher, a cyclone separator and a pulse dust collector, the output end of the nitrogen making machine is connected with the input end of the nitrogen storage tank, the output end of the nitrogen storage tank is connected with the input end of the nitrogen compressor, the output end of the nitrogen compressor is connected with the input end of the nitrogen concentration measuring instrument, and the output end of the nitrogen concentration measuring instrument is connected with the input end of the nitrogen distribution mechanism, the invention creates an anaerobic environment by hermetically arranging the lithium battery in the crushing process and introducing pure nitrogen into the lithium battery to realize safe crushing, thereby avoiding equipment damage and personnel injury, the lithium battery is broken more fully through the cooperation breakage of the first-level breaking chamber and the second-level breaking chamber, and the purposes of high efficiency and economy are achieved.
Description
Technical Field
The invention relates to the technical field of crushing equipment, in particular to nitrogen oxygen-free crushing equipment for lithium battery recovery and a using method thereof.
Background
The lithium battery mainly comprises a shell, a positive electrode, a negative electrode, electrolyte and a diaphragm, wherein the positive electrode is formed by coating lithium cobaltate powder on two sides of an aluminum foil current collector through PVDF (polyvinylidene fluoride) which plays a role in bonding; the negative electrode structure is similar to the positive electrode and is formed by bonding carbon powder on two sides of a copper foil current collector. The service life of the lithium battery is about 2 years, and if the discarded lithium battery is not properly treated, lithium hexafluorophosphate, carbonate organic matters, cobalt, copper and other heavy metals contained in the discarded lithium battery inevitably form potential pollution threats to the environment. On the other hand, cobalt, lithium, copper, plastics and the like in the waste lithium batteries are precious resources and have higher recovery value. Therefore, the waste lithium batteries are scientifically and effectively treated, and the method has remarkable environmental benefit and good economic benefit.
At present, the development trend of lithium battery crushing and recycling equipment is that the lithium battery crushing and recycling equipment cannot be blocked, the existing crushing equipment is suitable for crushing common articles and cannot be suitable for dangerous articles such as lithium batteries, the reason is that the dangerous articles are easy to react with oxygen in the air, explosion is easy to cause, equipment damage and even worker injury are caused, the safety is low, and the existing crushing equipment also has the problems of insufficient crushing, complex operation and the like.
In order to solve the above-mentioned drawbacks, a technical solution is now provided.
Disclosure of Invention
The invention aims to provide nitrogen anaerobic crushing equipment for lithium battery recovery and a using method thereof.
The technical problems to be solved by the invention are as follows:
how through an effectual mode, solve current lithium cell crushing equipment security low, crushing process insufficient, inefficiency, extravagant serious problem.
The purpose of the invention can be realized by the following technical scheme:
a nitrogen anaerobic crushing device for lithium battery recovery comprises a nitrogen making machine, a nitrogen storage tank, a nitrogen compressor, a nitrogen concentration measuring instrument, a nitrogen distribution mechanism, a crusher, a cyclone separator and a pulse dust collector, the output end of the nitrogen making machine is connected with the input end of the nitrogen storage tank, the output end of the nitrogen storage tank is connected with the input end of the nitrogen compressor, the output end of the nitrogen compressor is connected with the input end of the nitrogen concentration measuring instrument, the output end of the nitrogen concentration measuring instrument is connected with the input end of the nitrogen distribution mechanism, the nitrogen distribution mechanism is respectively connected with the input end of the crusher, the first input end of the cyclone separator and the first input end of the pulse dust collector, the output end of the crusher is connected with the second input end of the cyclone separator, the output end of the cyclone separator is connected with the second input end of the pulse dust collector, and the output end of the pulse dust collector is connected with the input end of the nitrogen making machine;
The crusher comprises a primary crushing chamber, a secondary crushing chamber and a feeding device, wherein a feeding hole is formed in the top of the primary crushing chamber, a first rotating shaft and a second rotating shaft are arranged in the primary crushing chamber, a first motor is arranged between the first rotating shaft and the second rotating shaft and fixed on the rear side face of the primary crushing chamber, a first worm is arranged on the first motor, a first worm wheel is fixed on the first rotating shaft, a second worm wheel is fixed on the second rotating shaft, a first crushing wheel is fixed on one end, away from the first worm wheel, of the first rotating shaft through welding, a second crushing wheel is fixed on one end, away from the second worm wheel, of the second rotating shaft through welding, symmetrical inclined tables are arranged at the bottom end of the primary crushing chamber, a second crushing chamber is arranged at the bottom of the primary crushing chamber, and a second motor is arranged at the bottom end of the second crushing chamber, one side of second motor is equipped with first motor shaft, be fixed with second worm and third worm on the first motor shaft from left to right respectively, be equipped with the third worm wheel on the second worm, be equipped with the fourth worm wheel on the third worm, one side of third worm wheel and fourth worm wheel is rotated respectively and is connected with head rod and second connecting rod, all rotate on head rod and the second connecting rod and be connected with the slide bar, and the bottom of slide bar and the inside bottom sliding connection of secondary crushing room, the one end that the third worm wheel was kept away from to the head rod is fixed with first crushing roller, the one end that the fourth worm wheel was kept away from to the second connecting rod is fixed with the second crushing roller.
Further, nitrogen making machine includes high concentration nitrogen gas passageway, hydrogen passageway, oxygen-eliminating device, cooler, cold machine, desiccator and filter of doing, high concentration nitrogen gas passageway and hydrogen passageway all link to each other with the input of oxygen-eliminating device, the output of oxygen-eliminating device links to each other with the input of cooler, the output of cooler links to each other with the input of cold machine of doing, the output of cold machine of doing links to each other with the input of desiccator, the output of desiccator links to each other with the input of filter.
Furthermore, a feeding device is arranged at the top of the primary crushing chamber, the feeding device comprises a feeding chamber, a third motor is arranged on the right side of the feeding chamber, a second motor shaft is fixed on one side of the third motor, a screw rod is arranged on the second motor shaft, a feeding funnel is arranged at the top of the feeding chamber, a feeding port is arranged on the right side of the feeding chamber, and the feeding port is positioned right above the feeding port.
Further, the first crushing wheel and the second crushing wheel are opposite in steering direction.
Furthermore, the crusher, the cyclone separator, the pulse dust collector and the nitrogen distribution mechanism are arranged in a sealed manner.
Furthermore, the first motor is meshed with the first worm wheel and the second worm wheel, and the second worm and the third worm are respectively meshed with the third worm wheel and the fourth worm wheel.
A use method of nitrogen oxygen-free crushing equipment for lithium battery recovery specifically comprises the following steps:
the method comprises the following steps: adding high-concentration nitrogen and hydrogen into a deaerator, removing oxygen in the high-concentration nitrogen by water generated by reaction of the oxygen and the hydrogen, cooling the water into liquid water by a cooler to cool steam water generated after high-temperature reaction, performing liquid-gas separation in the cooler, further cooling the obtained gas by a refrigeration dryer and primarily drying the nitrogen, fully drying the nitrogen by a dryer, filtering impurities by a filter to prepare pure nitrogen, sending the prepared pure nitrogen to a nitrogen storage tank by a nitrogen making machine, compressing the nitrogen by a nitrogen compressor to obtain the high-concentration nitrogen, measuring the concentration of the nitrogen by a nitrogen concentration measuring instrument and sending the nitrogen to a nitrogen distribution mechanism, sending the high-concentration nitrogen to a crusher by the nitrogen distribution mechanism, sending residues and the nitrogen of a lithium battery crushed in the crusher to a cyclone separator for solid-gas separation, and further purifying the obtained gas by a pulse dust collector to finally obtain the pure nitrogen, then continuously feeding the nitrogen into a nitrogen storage tank for recycling.
Step two: the lithium cell gets into the pay-off room through the pay-off funnel, third motor drive second motor shaft rotates, it promotes the lithium cell and evenly and gets into one-level crushing room to drive the hob and rotate this moment, start first motor this moment and drive first worm wheel and the second worm wheel rotation of meshing with it, finally drive first crushing wheel and the rotation of second crushing wheel opposite direction, carry out the one-level to the lithium cell and smash, the lithium cell piece after the one-level is smashed gets into the secondary crushing room, start second motor drive first motor shaft at this moment and rotate, drive the epaxial second worm of first motor and third worm rotation, thereby drive respectively with it third worm wheel and the rotation of fourth worm wheel of meshing and move along first motor shaft, finally drive first crushing roller and the interior roll extrusion lithium cell piece of second crushing roller at the secondary crushing room.
The invention has the beneficial effects that:
according to the invention, the lithium battery is sealed in the crushing process and pure nitrogen is introduced into the lithium battery to create an anaerobic environment, so that safe crushing is realized, equipment damage and personnel injury are avoided, the lithium battery is crushed more fully by matching the primary crushing chamber and the secondary crushing chamber, and the purposes of high efficiency and economy are achieved.
Drawings
The invention is described in further detail below with reference to the figures and specific embodiments.
FIG. 1 is a flow chart of the lithium battery recycling operation according to the present invention.
Fig. 2 is a schematic view of the overall structure of the crushing chamber of the present invention.
Fig. 3 is a flow chart of the nitrogen generator operation of the present invention.
Fig. 4 is a schematic diagram of the structure of a primary crushing chamber part of the invention.
FIG. 5 is a top view of the structure of the secondary crushing chamber of the present invention.
FIG. 6 is a rear view of a partial structure of the secondary crushing chamber of the present invention.
FIG. 7 is a side view of the structure of part of the secondary crushing chamber of the present invention.
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.
Referring to fig. 1-7, the present invention provides a technical solution:
a nitrogen oxygen-free crushing device for lithium battery recovery comprises a nitrogen making machine 1, a nitrogen storage tank 2, a nitrogen compressor 3, a nitrogen concentration measuring instrument 4, a nitrogen distribution mechanism 5, a crusher 6, a cyclone separator 7 and a pulse dust collector 8, wherein the output end of the nitrogen making machine 1 is connected with the input end of the nitrogen storage tank 2, the output end of the nitrogen storage tank 2 is connected with the input end of the nitrogen compressor 3, the output end of the nitrogen compressor 3 is connected with the input end of the nitrogen concentration measuring instrument 4, the output end of the nitrogen concentration measuring instrument 4 is connected with the input end of the nitrogen distribution mechanism 5, the nitrogen distribution mechanism 5 is respectively connected with the input end of the crusher 6, the first input end of the cyclone separator 7 is connected with the first input end of the pulse dust collector 8, the output end of the crusher 6 is connected with the second input end of the cyclone separator 7, the output end of the cyclone separator 7 is connected with the second input, the output end of the pulse dust collector 8 is connected with the input end of the nitrogen making machine 1, the nitrogen making machine 1 comprises a high-concentration nitrogen channel 11, a hydrogen channel 12, a deaerator 13, a cooler 14, a cold dryer 15, a dryer 16 and a filter 17, the high-concentration nitrogen channel 11 and the hydrogen channel 12 are both connected with the input end of the deaerator 13, the output end of the deaerator 13 is connected with the input end of the cooler 14, the output end of the cooler 14 is connected with the input end of the cold dryer 15, the output end of the cold dryer 15 is connected with the input end of the dryer 16, the output end of the dryer 16 is connected with the input end of the filter 17, and the crusher 6, the cyclone separator 7, the pulse dust collector 8 and the nitrogen distribution mechanism 5 are all arranged in a sealing mode;
The crusher 6 comprises a primary crushing chamber 61, a secondary crushing chamber 62 and a feeding device 63, wherein the top of the primary crushing chamber 61 is provided with a feeding hole 611, the primary crushing chamber (61 is internally provided with a first rotating shaft 612 and a second rotating shaft 613, a first motor 614 is arranged between the first rotating shaft 612 and the second rotating shaft 613, the first motor 614 is fixed on the rear side surface of the primary crushing chamber 61, the first motor 614 is provided with a first worm 615, the first rotating shaft 612 is fixed with a first worm gear 616, the second rotating shaft 613 is fixed with a second worm gear 617, one end of the first rotating shaft 612 far away from the first worm gear 616 is fixed with a first crushing wheel 618 by welding, one end of the second rotating shaft 613 far away from the second worm gear 617 is fixed with a second crushing wheel 619 by welding, the first crushing wheel 618 and the second crushing wheel 619 are opposite in rotation direction, the bottom end inside the primary crushing chamber 61 is provided with a symmetrical inclined table 6110, the top of the primary crushing chamber 61 is provided with the feeding device 63, the feeding device 63 comprises a feeding chamber 631, a third motor 632 is arranged on the right side of the feeding chamber 631, a second motor shaft 633 is fixed on one side of the third motor 632, a screw rod 634 is arranged on the second motor shaft 633, a feeding funnel 635 is arranged on the top of the feeding chamber 631, a feeding port 636 is arranged on the right side of the feeding chamber 631, the feeding port 636 is positioned right above the feeding port 611, a second crushing chamber 62 is arranged at the bottom of the first-stage crushing chamber 61, a second motor 621 is arranged at the bottom end of the second crushing chamber 62, a first motor shaft 622 is arranged on one side of the second motor 621, a second worm 623 and a third worm 624 are respectively fixed on the first motor shaft 622 from left to right, a third worm wheel 625 is arranged on the second worm 623, a fourth worm wheel 626 is arranged on the third worm 624, a first connecting rod 627 and a second connecting rod 628 are respectively rotatably connected on one side of the third worm 625 and the fourth worm 626, a slide rod 6211 is rotatably connected on each of the, and the bottom end of the sliding rod 6211 is slidably connected with the bottom end of the interior of the secondary crushing chamber 62, a first crushing roller 629 is fixed at one end of the first connecting rod 627 far away from the third worm wheel 625, a second crushing roller 6210 is fixed at one end of the second connecting rod 628 far away from the fourth worm wheel 626, the first motor 615 is meshed with the first worm wheel 616 and the second worm wheel 617, and the second worm 623 and the third worm 624 are meshed with the third worm wheel 625 and the fourth worm wheel 626, respectively.
A use method of nitrogen oxygen-free crushing equipment for lithium battery recovery specifically comprises the following steps:
the method comprises the following steps: firstly, high-concentration nitrogen and hydrogen are added into a deaerator 13, water generated by the reaction of the oxygen and the hydrogen is used for removing the oxygen in the high-concentration nitrogen, then the water is cooled into liquid water by a cooler 14 through steam water generated after high-temperature reaction, liquid-gas separation is carried out in the cooler 14, the obtained gas is further cooled by a refrigeration dryer 15 and is primarily dried by nitrogen, the nitrogen is fully dried by a dryer 16, finally impurities are filtered out by a filter 17 to prepare pure nitrogen, the prepared pure nitrogen is sent to a nitrogen storage tank 2 through a nitrogen making machine 1, the nitrogen is compressed by a nitrogen compressor 3 to obtain the high-concentration nitrogen, the nitrogen concentration is measured by a nitrogen concentration measuring instrument 4 and is sent to a nitrogen distribution mechanism 5, the high-concentration nitrogen is sent to a crusher 6 by the nitrogen distribution mechanism 5, the residue and the nitrogen after the lithium battery is crushed in the crusher 6 are sent to a cyclone separator 7 for solid-gas separation, the obtained gas is further purified by a pulse dust collector 8 to finally obtain pure nitrogen, and then the pure nitrogen is continuously sent into the nitrogen storage tank 2 for cyclic utilization.
Step two: the lithium battery enters the feeding chamber 631 through the feeding funnel 635, the third motor 632 drives the second motor shaft 633 to rotate, the spiral rod 634 is driven to rotate to push the lithium battery to uniformly and stably enter the primary crushing chamber 61, at this time, the first motor 612 is started to drive the first worm 615 to rotate, and drives the first worm wheel 616 and the second worm wheel 617 engaged therewith to rotate, and finally drives the first crushing wheel 618 and the second crushing wheel 619 to rotate in opposite directions, the lithium battery is crushed in a first stage, the crushed pieces of the lithium battery enter the secondary crushing chamber 62, the second motor 621 is started to drive the first motor shaft 622 to rotate, the second worm 623 and the third worm 624 on the first motor shaft 622 are driven to rotate, thereby respectively driving the third worm gear 625 and the fourth worm gear 626 engaged therewith to rotate and move along the first motor shaft 622, and finally driving the first crushing roller 629 and the second crushing roller 6210 to roll the lithium battery fragments in the secondary crushing chamber 62.
The working principle is as follows:
when the invention is used, high-concentration nitrogen and hydrogen are firstly added into a deaerator 13, water generated by the reaction of the oxygen and the hydrogen is used for removing the oxygen in the high-concentration nitrogen, the water is cooled into liquid water by a cooler 14 through steam water generated after high-temperature reaction, liquid-gas separation is carried out in the cooler 14, the obtained gas is further cooled and primarily dried by a refrigeration dryer 15, the nitrogen is fully dried by a dryer 16, impurities are filtered out by a filter 17 to prepare pure nitrogen, the prepared pure nitrogen is sent to a nitrogen storage tank 2 through a nitrogen making machine 1, the nitrogen is compressed by a nitrogen compressor 3 to obtain high-concentration nitrogen, the nitrogen concentration is measured by a nitrogen concentration measuring instrument 4 and sent to a nitrogen distribution mechanism 5, the high-concentration nitrogen is sent to a crusher 6 by the nitrogen concentration measuring instrument 5, the residue and the nitrogen after the lithium battery is crushed in the crusher 6 are sent to a cyclone separator 7 for solid-gas separation, the obtained gas is further purified by a pulse dust collector 8 to finally obtain pure nitrogen, and then the pure nitrogen is continuously sent into the nitrogen storage tank 2 for cyclic utilization.
The working principle of the crusher is that the lithium battery enters the feeding chamber 631 through the feeding hopper 635, the third motor 632 drives the second motor shaft 633 to rotate, the screw rod 634 is driven to rotate to push the lithium battery to uniformly and stably enter the primary crushing chamber 61, at this time, the first motor 612 is started to drive the first worm 615 to rotate and drive the first worm gear 616 and the second worm gear 617 engaged with the first worm to rotate, finally the first crushing wheel 618 and the second crushing wheel 619 are driven to rotate, the lithium battery is subjected to primary crushing, the lithium battery fragments after the primary crushing enter the secondary crushing chamber 62, at this time, the second motor 621 is started to drive the first motor shaft 622 to rotate, the second worm 623 and the third worm 624 on the first motor shaft 622 are driven to rotate, so as to respectively drive the third worm gear 625 and the fourth worm 626 engaged with the first worm gear to rotate and move along the first motor shaft 622, and finally the first crushing roller 629 and the second crushing roller 6210 are driven to roll the lithium battery fragments in the secondary crushing chamber 62, the lithium battery is fully crushed.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the invention as defined in the accompanying claims.
Claims (7)
1. The nitrogen oxygen-free crushing equipment for lithium battery recovery is characterized by comprising a nitrogen making machine (1), a nitrogen storage tank (2), a nitrogen compressor (3), a nitrogen concentration measuring instrument (4), a nitrogen distribution mechanism (5), a crusher (6), a cyclone separator (7) and a pulse dust collector (8), wherein the output end of the nitrogen making machine (1) is connected with the input end of the nitrogen storage tank (2), the output end of the nitrogen storage tank (2) is connected with the input end of the nitrogen compressor (3), the output end of the nitrogen compressor (3) is connected with the input end of the nitrogen concentration measuring instrument (4), the output end of the nitrogen concentration measuring instrument (4) is connected with the input end of the nitrogen distribution mechanism (5), the nitrogen distribution mechanism (5) is connected with the input end of the crusher (6), and the output end of the crusher (6) is connected with the second input end of the cyclone separator (7), the output end of the cyclone separator (7) is connected with the second input end of the pulse dust collector (8), and the output end of the pulse dust collector (8) is connected with the input end of the nitrogen making machine (1);
The crusher (6) comprises a primary crushing chamber (61), a secondary crushing chamber (62) and a feeding device (63), a feeding hole (611) is formed in the top of the primary crushing chamber (61), a first rotating shaft (612) and a second rotating shaft (613) are arranged inside the primary crushing chamber (61), a first motor (614) is arranged between the first rotating shaft (612) and the second rotating shaft (613), the first motor (614) is fixed on the rear side face of the primary crushing chamber (61), a first worm (615) is arranged on the first motor (614), a first worm wheel (616) is fixed on the first rotating shaft (612), a second worm wheel (617) is fixed on the second rotating shaft (613), a first crushing wheel (618) is fixed at one end, far away from the first worm wheel (616), of the first rotating shaft (612), and a second crushing wheel (619) is fixed at one end, far away from the second worm wheel (617), of the second rotating shaft (613), the bottom end in the first-stage crushing chamber (61) is provided with symmetrical inclined tables (6110), the bottom of the first-stage crushing chamber (61) is provided with a second crushing chamber (62), the bottom end in the second crushing chamber (62) is provided with a second motor (621), one side of the second motor (621) is provided with a first motor shaft (622), the first motor shaft (622) is respectively fixed with a second worm (623) and a third worm (624) from left to right, the second worm (623) is provided with a third worm wheel (625), the third worm (624) is provided with a fourth worm wheel (626), one sides of the third worm wheel (625) and the fourth worm wheel (626) are respectively and rotatably connected with a first connecting rod (627) and a second connecting rod (628), the first connecting rod (627) and the second connecting rod (628) are respectively and rotatably connected with a sliding rod (6211), and the bottom end of the sliding rod (6211) is slidably connected with the bottom end in the second-stage crushing chamber (62), and a first crushing roller (629) is fixed at one end of the first connecting rod (627) far away from the third worm gear (625), and a second crushing roller (6210) is fixed at one end of the second connecting rod (628) far away from the fourth worm gear (626).
2. The nitrogen oxygen-free crushing device for lithium battery recycling according to claim 1, wherein the nitrogen making machine (1) comprises a high-concentration nitrogen channel (11), a hydrogen channel (12), a deaerator (13), a cooler (14), a cold dryer (15), a dryer (16) and a filter (17), the high-concentration nitrogen channel (11) and the hydrogen channel (12) are connected with an input end of the deaerator (13), an output end of the deaerator (13) is connected with an input end of the cooler (14), an output end of the cooler (14) is connected with an input end of the cold dryer (15), an output end of the cold dryer (15) is connected with an input end of the dryer (16), and an output end of the dryer (16) is connected with an input end of the filter (17).
3. The nitrogen oxygen-free crushing device for recycling lithium batteries as claimed in claim 1, wherein a feeding device (63) is arranged at the top of the primary crushing chamber (61), the feeding device (63) comprises a feeding chamber (631), a third motor (632) is arranged on the right side of the feeding chamber (631), a second motor shaft (633) is fixed on one side of the third motor (632), a screw rod (634) is arranged on the second motor shaft (633), a feeding funnel (635) is arranged at the top of the feeding chamber (631), a feeding port (636) is arranged on the right side of the feeding chamber (631), and the feeding port (636) is located right above the feeding port (611).
4. The oxygen-free crushing device for the nitrogen used for the lithium battery recovery as claimed in claim 1, wherein the first crushing wheel (618) and the second crushing wheel (619) are opposite in direction.
5. The oxygen-free crushing equipment for the nitrogen for the lithium battery recovery as claimed in claim 1, wherein the crusher (6), the cyclone separator (7), the pulse dust collector (8) and the nitrogen distribution mechanism (5) are hermetically arranged.
6. The nitrogen anaerobic crushing device for lithium battery recycling according to claim 1, characterized in that the first motor (615) is meshed with a first worm wheel (616) and a second worm wheel (617), and the second worm (623) and the third worm (624) are meshed with a third worm wheel (625) and a fourth worm wheel (626), respectively.
7. The use method of the nitrogen oxygen-free crushing device for lithium battery recovery as claimed in claim 1, wherein the working method specifically comprises the following steps:
the method comprises the following steps: firstly, high-concentration nitrogen and hydrogen are added into a deaerator (13), water generated by the reaction of the oxygen and the hydrogen is used for removing the oxygen in the high-concentration nitrogen, then the water is cooled into liquid water by a cooler (14) so as to cool steam water generated after high-temperature reaction, liquid-gas separation is carried out in the cooler (14), the obtained gas is further cooled and preliminarily dried by a refrigeration dryer (15), then the nitrogen is fully dried by a dryer (16), finally impurities are filtered out by a filter (17) to prepare pure nitrogen, the prepared pure nitrogen is sent to a nitrogen storage tank (2) by a nitrogen preparation machine (1), the nitrogen is compressed by a nitrogen compressor (3) to obtain the high-concentration nitrogen, the nitrogen concentration is measured by a nitrogen concentration measuring instrument (4) and sent to a nitrogen distribution mechanism (5), the high-concentration nitrogen is sent to a crusher (6) by the nitrogen (5), and the residue and the nitrogen after the lithium battery is crushed in the crusher (6) are sent to a cyclone separator (7) for carrying out Solid-gas separation, wherein the obtained gas is subjected to further purification treatment by a pulse dust collector (8) to finally obtain pure nitrogen, and then is continuously sent into a nitrogen storage tank (2) for cyclic utilization;
Step two: the lithium battery enters a feeding chamber (631) through a feeding hopper (635), a third motor (632) drives a second motor shaft (633) to rotate to drive a spiral rod (634) to rotate to push the lithium battery to uniformly and stably enter a primary crushing chamber (61), at the moment, a first motor (612) is started to drive a first worm (615) to rotate and drive a first worm wheel (616) and a second worm wheel (617) which are meshed with the first worm to rotate, finally, a first crushing wheel (618) and a second crushing wheel (619) are driven to rotate, primary crushing is carried out on the lithium battery, the crushed lithium battery fragments after primary crushing enter a secondary crushing chamber (62), at the moment, a second motor (621) is started to drive a first motor shaft (622) to rotate, a second worm (623) and a third worm (624) on the first motor shaft (622) are driven to rotate, and a third worm wheel (626) and a fourth worm wheel (624) which are meshed with the first motor shaft are respectively are driven to rotate and move along the first motor shaft (622), finally, the first crushing roller (629) and the second crushing roller (6210) are driven to roll the lithium battery fragments in the secondary crushing chamber (62).
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