CN113399077A

CN113399077A - Preparation device and preparation method of silicon-carbon composite negative electrode material of lithium battery

Info

Publication number: CN113399077A
Application number: CN202110678962.2A
Authority: CN
Inventors: 耿林华; 武建军; 龚军
Original assignee: Shanxi Btr New Energy Technology Co ltd
Current assignee: Shanxi Btr New Energy Technology Co ltd
Priority date: 2021-06-18
Filing date: 2021-06-18
Publication date: 2021-09-17

Abstract

The invention discloses a preparation device of a silicon-carbon composite cathode material of a lithium battery, which comprises a bottom box, a crushing mechanism, vibrating screen assemblies, a driving mechanism and a spiral assembly, wherein a screen cylinder is arranged at the top in the bottom box, the crushing mechanism is arranged in the screen cylinder, a pair of vibrating screen assemblies are arranged in the bottom box and positioned below the screen cylinder, the driving mechanism is arranged on the top surface of the bottom box, a vertical cylinder is arranged on the right side surface of the bottom box, and the spiral assembly is arranged in the vertical cylinder. The invention also discloses a preparation method of the preparation device of the lithium battery silicon-carbon composite negative electrode material; the invention solves the problems of incomplete crushing of the silicon-carbon negative electrode material and poor vibrating screen effect by matching the mechanism components, has compact integral structure design, and further improves the preparation effect of the silicon-carbon composite negative electrode material through reciprocating type cycle operation.

Description

Preparation device and preparation method of silicon-carbon composite negative electrode material of lithium battery

Technical Field

The invention relates to the technical field of preparation of lithium battery cathode materials, in particular to a preparation device and a preparation method of a lithium battery silicon-carbon composite cathode material.

Background

The cathode material is one of the main components of the lithium ion battery, while the graphite cathode material is the mainstream cathode material in the market in these years, and silicon has extremely high theoretical capacity and is the most potential cathode material for improving the capacity. Because silicon has larger volume expansion in the process of charging and discharging as the lithium battery cathode material, the silicon-carbon composite cathode material is prepared by compounding silicon nanocrystallization and graphite at present.

However, the silicon-carbon composite negative electrode material has the following disadvantages: 1. the silicon-carbon material needs to be repeatedly crushed to meet the requirement of fine particles, so that the silicon-carbon material is convenient to mix, but the existing preparation device cannot repeatedly crush the silicon-carbon material, so that the crushing effect is poor; 2. in the crushing process, the vibration sieve is heavy in weight, and because the crushing is not thorough, the materials of large and medium particles are often mixed and collected, and the materials are inconvenient to remove in the preparation process, so that the preparation effect of the silicon-carbon composite anode material is influenced.

Disclosure of Invention

The invention aims to solve the defects in the prior art, and provides a preparation device of a silicon-carbon composite negative electrode material of a lithium battery.

In order to solve the problems in the prior art, the invention adopts the following technical scheme:

preparation facilities of compound cathode material of lithium cell silicon carbon, including under casing, rubbing crusher constructs, the subassembly of shaking sieve, actuating mechanism, spiral component, the top is equipped with a screen cloth section of thick bamboo in the under casing, be equipped with rubbing crusher constructs in the screen cloth section of thick bamboo, is located screen cloth section of thick bamboo below and is equipped with a pair of subassembly of shaking sieve in the under casing, the top surface of under casing is equipped with actuating mechanism, the right flank of under casing is equipped with perpendicular section of thick bamboo, be equipped with spiral component in the perpendicular section of thick bamboo.

Preferably, the both sides that are located a screen cloth section of thick bamboo are equipped with a pair of solid fixed ring, every at the inner wall top of under casing solid fixed ring's the outside all overlaps and is equipped with the bearing ring, the both ends mouth of a screen cloth section of thick bamboo is established respectively on the bearing ring that corresponds, and the top that is located a screen cloth section of thick bamboo is equipped with first bearing at the left surface top of under casing, the interpolation of first bearing is equipped with the universal driving shaft, the inner pot head of universal driving shaft is equipped with first gear, the lateral surface left end cover of a screen cloth section of thick bamboo is equipped with the gear ring, just first gear is connected with the gear ring meshing.

Preferably, rubbing crusher constructs including crushing roller, crushing reamer, and the inner wall top that is located solid fixed ring inherent under casing is equipped with a pair of second bearing, the both ends of crushing roller are run through respectively and are inserted and establish in the second bearing, are located the inherent crushing epaxial a plurality of crushing reamers that are equipped with of screen cloth section of thick bamboo, just the left end of crushing roller runs through the under casing and extends to the left side of under casing, just the left pot head of crushing roller is equipped with the second gear, the outer pot head of universal driving shaft is equipped with linkage gear, just linkage gear is connected with the meshing of second gear.

Preferably, the sieve subassembly that shakes includes the screen cloth board, shakes and sieves the axle, is located screen cloth section of thick bamboo below and is equipped with a pair of screen cloth board, every in the under casing right-hand member portion of screen cloth board all with the right side inner wall activity hinge joint of under casing, the left side edge below that is located screen cloth board all is equipped with the slant baffle, every slant baffle's bottom surface equipartition is equipped with a plurality of vibrating spring, every vibrating spring's bottom all with the left side limit rigid coupling of the screen cloth board that corresponds, the left side edge below that is located screen cloth board all is equipped with the third bearing in the under casing left side wall, every it is equipped with the sieve axle that shakes all to insert in the third bearing, every the inner end of shaking the sieve axle all overlaps and is equipped with eccentric cam, every the left side of screen cloth board all is equipped with trapezoidal dog, every eccentric cam all is in intermittent contact with the trapezoidal dog that corresponds.

Preferably, every the left end of shaking the sieve axle all is equipped with linkage belt pulley, two be equipped with the linkage belt between the linkage belt pulley, the both ends of linkage belt are established respectively on two linkage belt pulleys, and wherein, the left side extension pot head that is located the sieve axle that shakes of top is equipped with the second belt pulley, the left side extension pot head of crushing axle is equipped with first belt pulley, be equipped with drive belt between first belt pulley and the second belt pulley, the both ends of drive belt are established respectively on first belt pulley, second belt pulley.

Preferably, the driving mechanism comprises a driving shaft and a servo motor, a pair of bearing seats are arranged on two sides of the top surface of the bottom box, a fixed bearing is arranged in each bearing seat, two ends of the driving shaft are respectively inserted into the fixed bearings in a penetrating manner and extend to the outer sides of the bearing seats, a third gear and a first bevel gear are respectively sleeved at two ends of the left end of the driving shaft, and the third gear is in meshed connection with the linkage gear; the top surface middle part of under casing is equipped with the rectangular channel, be equipped with servo motor in the rectangular channel, servo motor's motor shaft tip is equipped with the fourth gear, the middle part cover of drive shaft is equipped with the fifth gear, just the fourth gear is connected with the meshing of fifth gear.

Preferably, the spiral component includes screw axis, spiral leaf, all be equipped with location bearing in the middle part of the upper and lower face in the vertical cylinder, the both ends of screw axis run through respectively and insert and establish in location bearing and extend to the outside of vertical cylinder, the upper and lower both ends of screw axis all are equipped with the linkage bevel gear, just first bevel gear is connected with the meshing of the linkage bevel gear that is located the top, is located to be equipped with a plurality of spiral leaves on the internal screw axis of vertical cylinder, the right lateral wall is equipped with the semicircle hot plate in the vertical cylinder, left lateral wall top is equipped with the slant through-hole in the vertical cylinder, and the position that is located the correspondence of screen plate right-hand member all is equipped with horizontal through-hole in the vertical cylinder left lateral wall bottom.

Preferably, the bottom of the right side wall in the bottom box is provided with a fourth bearing, a discharging shaft is inserted in the fourth bearing, the right end of the discharging shaft penetrates through the bottom box and extends to the outer side of the bottom box, a second bevel gear is sleeved at the right end of the discharging shaft and is in meshed connection with a linkage bevel gear located below, and a plurality of propelling blades are arranged on the discharging shaft in the bottom box.

Preferably, the right flank middle part of erecting the section of thick bamboo is equipped with the feeding channel-section steel, the left surface bottom of under casing is equipped with out the feed cylinder, the outer port cover that goes out the feed cylinder is equipped with the screw cap, four corners in the bottom surface of under casing all are equipped with the base, servo motor passes through power cord and external power supply electric connection.

The invention also provides a preparation method of the preparation device of the lithium battery silicon-carbon composite negative electrode material, which comprises the following steps:

step one, a motor shaft of a servo motor drives a fourth gear to synchronously rotate, the fourth gear and a fifth gear are meshed to rotate, and a driving shaft, third gears at two ends and a first bevel gear are driven to synchronously rotate;

step two, the first bevel gear and the linkage bevel gear positioned above are meshed and rotated to drive the screw shaft and the spiral blade to synchronously and spirally rotate, and the linkage bevel gear positioned below is meshed and rotated with the second bevel gear to drive the discharging shaft and the propelling blade to synchronously and spirally rotate; the third gear is meshed with the linkage gear to rotate so as to drive the linkage shaft and the first gear to synchronously rotate, the first gear is meshed with the gear ring to rotate so as to drive the screen cylinder to be matched with the bearing ring to rotate along the fixing ring, and the linkage gear is meshed with the second gear to rotate so as to drive the crushing shaft and the crushing reamer to rotate;

step three, the crushing shaft drives the upper vibrating screen shaft to rotate through the driving belt pulley, the upper vibrating screen shaft drives the lower vibrating screen shaft to rotate through the linkage belt, the two vibrating screen shafts synchronously drive the corresponding eccentric cams to eccentrically rotate, and the eccentric cams are in intermittent collision contact with the corresponding trapezoidal stop blocks to drive a pair of screen plates to perform reciprocating vibrating screen operation;

adding silicon, carbon and other negative materials into the vertical cylinder through the feeding channel steel, driving the negative materials to spirally rise upwards due to the spiral rotation of the spiral shaft and the spiral blades, enabling the negative materials to enter the screen cylinder through the inclined through holes, feeding the negative materials through the crushing reamer to perform crushing operation, enabling the crushed negative materials to fall onto the screen plate above through the screen cylinder, enabling large-particle negative materials to enter the transverse through holes along the screen plate above, enabling the rest negative materials to fall onto the screen plate below, enabling middle-particle negative materials to enter the transverse through holes along the screen plate below, enabling the rest small-particle negative materials to fall to the bottom in the bottom box, and repeating the steps to perform secondary crushing on the large-particle negative materials and the middle-particle negative materials through the spiral blades;

and step five, finally, the cathode material drops to the bottom in the bottom box after being completely crushed and sieved, and the screw cap is opened due to the synchronous spiral rotation of the discharging shaft and the pushing blade, so that the crushed and mixed cathode material is driven to be discharged through the discharging barrel under the action of the pushing blade, and is collected and bagged.

Compared with the prior art, the invention has the beneficial effects that:

1. in the invention, the first gear and the gear ring are meshed for rotation, so that the screen cylinder is conveniently driven to be matched with the bearing ring to rotate along the fixing ring, the linkage gear and the second gear are meshed for rotation, so that the crushing shaft and the crushing reamer are conveniently driven to rotate, the crushing operation is carried out by feeding the negative electrode material through the crushing reamer, and the crushed negative electrode material falls onto the screen plate through the screen cylinder;

2. in the invention, two ends of a driving belt are respectively sleeved on a first belt pulley and a second belt pulley, a crushing shaft drives an upper vibrating screen shaft to rotate through the driving belt pulley, two ends of a linkage belt are respectively sleeved on two linkage belt pulleys, the upper vibrating screen shaft drives a lower vibrating screen shaft to rotate through the linkage belt, the two vibrating screen shafts synchronously drive corresponding eccentric cams to eccentrically rotate, and a pair of screen plates are driven to perform reciprocating vibrating screen operation within a certain range through intermittent collision contact of the eccentric cams and corresponding trapezoidal stop blocks;

in conclusion, the invention solves the problems of incomplete pulverization of the silicon-carbon negative electrode material and poor vibrating screen effect by matching the mechanism components, has compact overall structure design, and further improves the preparation effect of the silicon-carbon composite negative electrode material through reciprocating type cycle operation.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:

FIG. 1 is a front view of the present invention;

FIG. 2 is a front sectional view of the present invention;

FIG. 3 is a schematic cross-sectional view of a screen cylinder structure according to the present invention;

FIG. 4 is an enlarged view taken at A of FIG. 2 in accordance with the present invention;

FIG. 5 is an enlarged view of the invention at B of FIG. 2;

FIG. 6 is a schematic view of a preparation method of the present invention;

number in the figure: the device comprises a bottom box 1, a screen drum 11, a fixing ring 12, a bearing ring 13, a crushing shaft 14, a crushing reamer 15, a linkage shaft 2, a first gear 21, a gear ring 22, a linkage gear 23, a second gear 24, a screen plate 3, an inclined baffle 31, a vibrating screen shaft 32, an eccentric cam 33, a trapezoidal stop 34, a driving belt 35, a linkage belt 36, a driving shaft 4, a bearing seat 41, a rectangular groove 42, a servo motor 43, a fourth gear 44, a fifth gear 45, a third gear 46, a first bevel gear 47, a vertical drum 5, a spiral shaft 51, a spiral blade 52, a semicircular heating plate 53, a feeding channel steel 54, a transverse through hole 55, an inclined through hole 56, a linkage bevel gear 57, a discharging shaft 6, a propelling blade 61, a second bevel gear 62 and a discharging drum 63.

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.

The first embodiment is as follows: the embodiment provides a preparation facilities of compound cathode material of lithium cell silicon carbon, refer to fig. 1-5, it is concrete, including under casing 1, rubbing crusher constructs, the subassembly that shakes, actuating mechanism, spiral component, under casing 1 is the horizontal vertical rectangle boxlike of placing, the top is equipped with a horizontal screen cloth section of thick bamboo 11 of placing in under casing 1, be equipped with rubbing crusher constructs in the screen cloth section of thick bamboo 11, be located screen cloth section of thick bamboo 11 below and be equipped with a pair of subassembly that shakes in under casing 1, the top surface of under casing 1 is equipped with actuating mechanism, the right flank of under casing 1 is equipped with the vertical section of thick bamboo 5 of vertical rigid coupling, be equipped with spiral component in the vertical section of thick bamboo 5.

In the invention, a pair of fixing rings 12 are arranged on the top of the inner wall of a bottom box 1 and positioned on two sides of a screen cylinder 11, a bearing ring 13 is sleeved on the outer side of each fixing ring 12, two ports of the screen cylinder 11 are respectively sleeved on the corresponding bearing rings 13, a first bearing which is fixedly connected in a penetrating manner is arranged on the top of the left side surface of the bottom box 1 and positioned above the screen cylinder 11, a linkage shaft 2 which is fixedly connected in a transverse penetrating manner is inserted in the first bearing, a first gear 21 which is fixedly connected in a concentric manner is sleeved on the inner end of the linkage shaft 2, a gear ring 22 which is fixedly connected in a concentric manner is sleeved on the left end of the outer side surface of the screen cylinder 11, and the first gear 21 is connected with the gear ring 22 in a meshing manner.

In the invention, the crushing mechanism comprises a crushing shaft 14 and a crushing reamer 15, a pair of second bearings fixedly connected in a penetrating way are arranged at the top of the inner wall of the bottom box 1 in the fixing ring 12, two ends of the crushing shaft 14 are respectively inserted in the corresponding second bearings in a penetrating way, a plurality of crushing reamers 15 fixedly connected in an equidistant and staggered way are arranged on the crushing shaft 14 in the screen cylinder 11, the left end of the crushing shaft 14 penetrates through the bottom box 1 and extends to the left side of the bottom box 1, the left end of the crushing shaft 14 is sleeved with a second gear 24, the outer end of the linkage shaft 2 is sleeved with a linkage gear 23, the linkage gear 23 is meshed and connected with the second gear 24, the linkage gear 23 and the second gear 24 are meshed for rotation, so that the crushing shaft 14 and the crushing reamer 15 are conveniently driven to rotate, the anode material is fed through the crushing reamer 15 to be crushed, and the crushed anode material falls onto the screen plate 3 through the screen cylinder 11.

The vibrating screen assembly comprises a screen plate 3 and a vibrating screen shaft 32, wherein a pair of obliquely arranged screen plates 3 are arranged in a bottom box 1 below a screen cylinder 11, the aperture of the upper screen plate 3 is larger than that of the lower screen plate 3, the right end part of each screen plate 3 is movably hinged with the inner wall of the right side of the bottom box 1, an oblique baffle plate 31 is arranged on the left side wall of the bottom box 1 above the left side edge of the screen plate 3, a plurality of vibrating springs are uniformly distributed on the bottom surface of each oblique baffle plate 31, the bottom end of each vibrating spring is fixedly connected with the left side edge of the corresponding screen plate 3, and the oblique baffle plate 31 is used by matching with the vibrating springs to play a certain limiting role on the screen plate 3 and increase the vibration frequency of the screen plate 3; the left side wall all is equipped with the third bearing in the bottom case 1 below the left side limit that is located screen board 3, all insert in every third bearing and be equipped with the sieve axle 32 that shakes that transversely runs through the rigid coupling, every eccentric cam 33 that shakes the eccentric rigid coupling of the inner end of sieve axle 32 all overlaps, the bottom surface left side of every screen board 3 all is equipped with trapezoidal dog 34, every eccentric cam 33 all is in intermittent collision contact with trapezoidal dog 34 that corresponds, two shake sieve axle 32 synchronous drive corresponding eccentric cam 33 and carry out eccentric rotation, through eccentric cam 33 and the trapezoidal dog 34 intermittent collision contact that corresponds, it carries out reciprocal sieve operation that shakes at certain extent to drive a pair of screen board 3.

In the invention, the left end of each vibrating screen shaft 32 is sleeved with a linkage belt pulley, a linkage belt 36 is arranged between the two linkage belt pulleys, two ends of the linkage belt 36 are respectively sleeved on the two linkage belt pulleys, because two ends of the linkage belt 36 are respectively sleeved on the two linkage belt pulleys, the upper vibrating screen shaft 32 drives the lower vibrating screen shaft 32 to rotate through the linkage belt 36; wherein, the left side of the sieve axle 32 that shakes that is located the top extends the pot head and is equipped with the second belt pulley, and the left side of crushing axle 14 extends the pot head and is equipped with first belt pulley, is equipped with drive belt 35 between first belt pulley and the second belt pulley, and the both ends of drive belt 35 are established respectively on first belt pulley, second belt pulley, because the both ends of drive belt 35 are established respectively on first belt pulley, second belt pulley, and crushing axle 14 drives the sieve axle 32 that shakes of top through drive belt pulley 35 and rotates.

In the invention, the driving mechanism comprises a driving shaft 4 and a servo motor 43, a pair of bearing seats 41 are arranged on two sides of the top surface of the bottom box 1, a fixed bearing is arranged in each bearing seat 41, two ends of the driving shaft 4 are respectively inserted into the corresponding fixed bearings and extend to the outer sides of the bearing seats 41, a third gear 46 and a first bevel gear 47 are respectively sleeved at two ends of the left end of the driving shaft 4, and the third gear 46 is meshed with the linkage gear 23; the top surface middle part indent of under casing 1 is equipped with rectangular channel 42, be equipped with servo motor 43 in the rectangular channel 42, servo motor 43's motor shaft end is equipped with the fourth gear 44 of concentric rigid coupling, the middle part cover of drive shaft 4 is equipped with the fifth gear 45 of concentric rigid coupling, and fourth gear 44 is connected with the meshing of fifth gear 45, servo motor 43's motor shaft drives fourth gear 44 synchronous revolution, fourth gear 44 and the meshing of fifth gear 45 rotate, drive shaft 4 and the third gear 46 at both ends, first bevel gear 47 synchronous revolution.

In the invention, a fourth bearing which is fixedly connected in a penetrating manner is arranged at the bottom of the right side wall in the bottom box 1, a discharging shaft 6 which is fixedly connected in a penetrating manner is inserted in the fourth bearing, the right end of the discharging shaft 6 penetrates through the bottom box 1 and extends to the outer side of the bottom box 1, a second bevel gear 62 is sleeved at the right end of the discharging shaft 6, the second bevel gear 62 is meshed with a linkage bevel gear 57 positioned below, a plurality of continuous spiral staggered propelling blades 61 are arranged on the discharging shaft 6 in the bottom box 1, the linkage bevel gear 57 positioned below and the second bevel gear 62 are meshed to rotate to drive the discharging shaft 6 and the propelling blades 61 to synchronously and spirally rotate, a negative electrode material falls to the inner bottom of the bottom box 1 after passing through a complete crushing vibrating screen, and the crushed and mixed negative electrode material is driven to be discharged through a discharging barrel 63 under the action of the propelling blades 61.

According to the invention, the middle part of the right side surface of the vertical cylinder 5 is provided with the feeding channel steel 54 which is obliquely communicated and fixedly connected, the bottom of the left side surface of the bottom box 1 is provided with the discharging cylinder 63 which is communicated and fixedly connected, the outer port of the discharging cylinder 63 is sleeved with the threaded cover, four corners of the bottom surface of the bottom box 1 are respectively provided with the base, the servo motor 43 is electrically connected with an external power supply through a power line, and the feeding channel steel 54 is convenient for adding negative materials such as silicon, carbon and the like into the vertical cylinder 5.

Example two: in the first embodiment, there is a problem that loading and secondary crushing are inconvenient, so on the basis of the first embodiment, the first embodiment further includes:

in the invention, the spiral component comprises a spiral shaft 51 and spiral blades 52, the middle parts of the upper and lower surfaces in the vertical cylinder 5 are respectively provided with a positioning bearing, the upper and lower ends of the spiral shaft 51 are respectively inserted into the corresponding positioning bearings and extend to the outer side of the vertical cylinder 5, the upper and lower ends of the spiral shaft 51 are respectively sleeved with a linkage bevel gear 57 which is concentrically and fixedly connected, the first bevel gear 47 is meshed with the linkage bevel gear 57 which is positioned above, the spiral shaft 51 which is positioned in the vertical cylinder 5 is provided with a plurality of continuous spiral staggered spiral blades 52, the right side wall in the vertical cylinder 5 is provided with a semi-circular heating plate 53 which is vertically and fixedly connected, the semi-circular heating plate 53 is adjusted to a proper temperature to ensure that the temperature of the vertical cylinder 5 is constant, the top part of the left side wall in the vertical cylinder 5 is provided with an oblique through hole 56 which obliquely passes through the screen cylinder 11, the bottom part of the left side wall in the vertical cylinder 5 which is positioned corresponding to the right end part of the screen plate 3 is provided with a transverse through hole 55, the first bevel gear 47 is meshed with the linkage bevel gear 57 positioned above to rotate, so that the screw shaft 51 and the screw blade 52 are driven to synchronously rotate in a spiral manner, and large-particle negative and medium-particle negative electrode materials enter the transverse through hole 55 along the screen plate 3 below, so that the negative electrode materials are driven to spirally rise upwards and enter the screen cylinder 11 through the inclined through hole 56.

Example three: referring to fig. 6, in this embodiment, the present invention further provides a preparation method of an apparatus for preparing a silicon-carbon composite anode material for a lithium battery, including the following steps:

step one, a servo motor 43 is started, a motor shaft of the servo motor 43 drives a fourth gear 44 to synchronously rotate, the fourth gear 44 and a fifth gear 45 are meshed to rotate, and a driving shaft 4, third gears 46 at two ends and a first bevel gear 47 are driven to synchronously rotate;

step two, the first bevel gear 47 and the linkage bevel gear 57 positioned above are meshed to rotate to drive the screw shaft 51 and the screw blade 52 to synchronously and spirally rotate, and the linkage bevel gear 57 positioned below is meshed to rotate with the second bevel gear 62 to drive the discharging shaft 6 and the propelling blade 61 to synchronously and spirally rotate; the third gear 46 is meshed with the linkage gear 23 to rotate so as to drive the linkage shaft 2 and the first gear 21 to synchronously rotate, the first gear 21 is meshed with the gear ring 22 to rotate so as to drive the screen cylinder 11 to rotate along the fixed ring 12 in a manner of matching with the bearing ring 13, and the linkage gear 23 is meshed with the second gear 24 to rotate so as to drive the crushing shaft 14 and the crushing reamer 15 to rotate;

step three, two ends of a driving belt 35 are respectively sleeved on a first belt pulley and a second belt pulley, a crushing shaft 14 drives an upper vibrating screen shaft 32 to rotate through the driving belt pulley 35, two ends of a linkage belt 36 are respectively sleeved on two linkage belt pulleys, the upper vibrating screen shaft 32 drives a lower vibrating screen shaft 32 to rotate through the linkage belt 36, the two vibrating screen shafts 32 synchronously drive corresponding eccentric cams 33 to eccentrically rotate, and the eccentric cams 33 are in intermittent collision contact with corresponding trapezoidal stop blocks 34 to drive a pair of screen plates 3 to perform reciprocating vibrating screen operation within a certain range;

step four, adding silicon, carbon and other cathode materials into the vertical cylinder 5 through the feed channel steel 54, driving the cathode materials to spirally rise upwards due to the spiral rotation of the spiral shaft 51 and the spiral blades 52 and enter the screen cylinder 11 through the inclined through holes 56, because the screen cylinder 11, the crushing shaft 14 and the crushing reamer 15 all rotate, the crushing operation is carried out by feeding the cathode material through the crushing reamer 15, the crushed cathode material falls onto the screen plate 3 above through the screen cylinder 11, because the pair of screen plates 3 are in reciprocating vibration screening, large-particle cathode materials enter the transverse through holes 55 along the screen plates 3 above, the rest of the cathode material falls onto the screen plate 3 below, the middle particle cathode material enters the transverse through hole 55 along the screen plate 3 below, the rest small-particle cathode materials fall to the bottom in the bottom box 1, and the large-particle cathode materials and the medium-particle cathode materials are subjected to secondary crushing by repeating the steps in the spiral rotation of the spiral blades 52;

and step five, finally, the cathode material falls to the bottom in the bottom box 1 after being completely crushed and sieved, and the discharge shaft 6 and the pushing blade 61 synchronously and spirally rotate to open the threaded cover, so that the crushed and mixed cathode material is driven to be discharged through the discharge barrel 63 under the action of the pushing blade 61, and is collected and bagged.

The invention solves the problems of incomplete crushing of the silicon-carbon negative electrode material and poor vibrating screen effect by matching the mechanism components, has compact integral structure design, and further improves the preparation effect of the silicon-carbon composite negative electrode material through reciprocating type cycle operation.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. Preparation facilities of compound cathode material of lithium cell silicon carbon, including bottom case (1), rubbing crusher constructs, the subassembly of shaking sieve, actuating mechanism, spiral component, its characterized in that: the top is equipped with a screen cloth section of thick bamboo (11) in under casing (1), be equipped with rubbing crusher in screen cloth section of thick bamboo (11), be located screen cloth section of thick bamboo (11) below and be equipped with a pair of sieve subassembly that shakes in under casing (1), the top surface of under casing (1) is equipped with actuating mechanism, the right flank of under casing (1) is equipped with erects a section of thick bamboo (5), be equipped with spiral component in erecting a section of thick bamboo (5).

2. The apparatus for preparing silicon-carbon composite anode material for lithium battery as claimed in claim 1, wherein: the both sides that are located a screen cloth section of thick bamboo (11) are equipped with a pair of solid fixed ring (12), every at the inner wall top of under casing (1) the outside of solid fixed ring (12) all is equipped with bearing ring (13), the both ends mouth of a screen cloth section of thick bamboo (11) is established respectively on corresponding bearing ring (13), and the top that is located a screen cloth section of thick bamboo (11) is equipped with first bearing at the left surface top of under casing (1), it is equipped with universal driving shaft (2) to insert in the first bearing, the inner pot head of universal driving shaft (2) is equipped with first gear (21), the lateral surface left end cover of a screen cloth section of thick bamboo (11) is equipped with ring gear (22), just first gear (21) are connected with ring gear (22) meshing.

3. The apparatus for preparing a silicon-carbon composite anode material for a lithium battery as claimed in claim 2, wherein: crushing mechanism includes crushing shaft (14), crushing reamer (15), and the inner wall top that is located solid fixed ring (12) inherent under casing (1) is equipped with a pair of second bearing, the both ends of crushing shaft (14) are run through respectively and are inserted and establish in the second bearing, are located and are equipped with a plurality of crushing reamers (15) on screen drum (11) inherent crushing shaft (14), just the left end of crushing shaft (14) runs through under casing (1) and extends to the left side of under casing (1), just the left pot head of crushing shaft (14) is equipped with second gear (24), the outer pot head of universal driving shaft (2) is equipped with linkage gear (23), just linkage gear (23) are connected with second gear (24) meshing.

4. The apparatus for preparing silicon-carbon composite anode material for lithium battery as claimed in claim 3, wherein: the vibrating screen assembly comprises screen plates (3) and vibrating screen shafts (32), a pair of screen plates (3) are arranged in a bottom box (1) below a screen cylinder (11), the right end part of each screen plate (3) is movably hinged with the inner wall of the right side of the bottom box (1), an inclined baffle plate (31) is arranged on the left side wall in the bottom box (1) above the left side edge of the screen plate (3), a plurality of vibrating springs are uniformly distributed on the bottom surface of each inclined baffle plate (31), the bottom end of each vibrating spring is fixedly connected with the left side edge of the corresponding screen plate (3), a third bearing is arranged on the left side wall in the bottom box (1) below the left side edge of the screen plate (3), each vibrating screen shaft (32) is inserted in each third bearing, an eccentric cam (33) is sleeved at the inner end of each vibrating screen shaft (32), and a trapezoidal stop block (34) is arranged on the left side of the bottom surface of each screen plate (3), each eccentric cam (33) is in intermittent contact with a corresponding trapezoidal stop (34).

5. The apparatus for preparing silicon-carbon composite anode material for lithium battery as claimed in claim 4, wherein: every the left end of shaking sieve axle (32) all is equipped with linkage belt pulley, two be equipped with linkage belt (36) between the linkage belt pulley, the both ends of linkage belt (36) are established respectively on two linkage belt pulleys, and wherein, the left side that is located the top and shakes sieve axle (32) extends the pot head and is equipped with the second belt pulley, the left side that smashes axle (14) extends the pot head and is equipped with first belt pulley, be equipped with between first belt pulley and the second belt pulley drive belt (35), the both ends of drive belt (35) are established respectively on first belt pulley, second belt pulley.

6. The apparatus for preparing silicon-carbon composite anode material for lithium battery as claimed in claim 4, wherein: the driving mechanism comprises a driving shaft (4) and a servo motor (43), a pair of bearing seats (41) are arranged on two sides of the top surface of the bottom box (1), a fixed bearing is arranged in each bearing seat (41), two ends of the driving shaft (4) penetrate through the fixed bearings respectively and extend to the outer sides of the bearing seats (41), a third gear (46) and a first bevel gear (47) are sleeved at two ends of the left end of the driving shaft (4) respectively, and the third gear (46) is meshed with the linkage gear (23); the top surface middle part of under casing (1) is equipped with rectangular channel (42), be equipped with servo motor (43) in rectangular channel (42), the motor shaft tip of servo motor (43) is equipped with fourth gear (44), the middle part cover of drive shaft (4) is equipped with fifth gear (45), just fourth gear (44) are connected with fifth gear (45) meshing.

7. The apparatus for preparing silicon-carbon composite anode material for lithium battery as claimed in claim 6, wherein: the spiral component comprises a spiral shaft (51) and spiral blades (52), wherein the middle of the upper surface and the lower surface of the vertical cylinder (5) are respectively provided with a positioning bearing, the two ends of the spiral shaft (51) are respectively penetrated and inserted into the positioning bearings and extend to the outer side of the vertical cylinder (5), the upper end and the lower end of the spiral shaft (51) are respectively provided with a linkage bevel gear (57), the first bevel gear (47) is meshed with the linkage bevel gear (57) positioned above the spiral shaft and connected with the linkage bevel gear (57) positioned above the spiral shaft, the spiral blades (52) are positioned on the internal spiral shaft (51) of the vertical cylinder (5), the right side wall of the vertical cylinder (5) is provided with a semicircular heating plate (53), the top of the left side wall of the vertical cylinder (5) is provided with an oblique through hole (56), and the bottom of the left side wall of the vertical cylinder (5) is provided with a transverse through hole (55) at the position corresponding to the right end of a screen plate (3).

8. The apparatus for preparing a silicon-carbon composite anode material for a lithium battery as claimed in claim 7, wherein: right flank wall bottom is equipped with the fourth bearing in under casing (1), the interpolation of fourth bearing is equipped with ejection of compact axle (6), the right-hand member of ejection of compact axle (6) runs through under casing (1) and extends to under casing (1) outside, just the right-hand member cover of ejection of compact axle (6) is equipped with second bevel gear (62), second bevel gear (62) are connected with linkage bevel gear (57) meshing that is located the below, are located and are equipped with a plurality of propulsion leaves (61) on under casing (1) inherent ejection of compact axle (6).

9. The apparatus for preparing a silicon-carbon composite anode material for a lithium battery as claimed in claim 8, wherein: the right flank middle part of a vertical section of thick bamboo (5) is equipped with feeding channel-section steel (54), the left surface bottom of under casing (1) is equipped with out feed cylinder (63), the outer port cover that goes out feed cylinder (63) is equipped with the screw thread lid, four corners in the bottom surface of under casing (1) all are equipped with the base, servo motor (43) are through power cord and external power supply electric connection.

10. The method for manufacturing a device for manufacturing a silicon-carbon composite anode material for a lithium battery as claimed in any one of claims 1 to 9, comprising the steps of:

step one, a motor shaft of a servo motor (43) drives a fourth gear (44) to synchronously rotate, the fourth gear (44) and a fifth gear (45) are meshed to rotate, and a driving shaft (4), third gears (46) at two ends and a first bevel gear (47) are driven to synchronously rotate;

step two, the first bevel gear (47) and the linkage bevel gear (57) positioned above are meshed to rotate to drive the screw shaft (51) and the screw blade (52) to synchronously rotate in a spiral manner, and the linkage bevel gear (57) positioned below is meshed to rotate with the second bevel gear (62) to drive the discharging shaft (6) and the propelling blade (61) to synchronously rotate in a spiral manner; the third gear (46) is meshed with the linkage gear (23) to rotate so as to drive the linkage shaft (2) and the first gear (21) to synchronously rotate, the first gear (21) is meshed with the gear ring (22) to rotate so as to drive the screen drum (11) to rotate along the fixed ring (12) in a manner of being matched with the bearing ring (13), and the linkage gear (23) is meshed with the second gear (24) to rotate so as to drive the crushing shaft (14) and the crushing reamer (15) to rotate;

thirdly, the crushing shaft (14) drives the upper vibrating screen shaft (32) to rotate through a driving belt pulley (35), the upper vibrating screen shaft (32) drives the lower vibrating screen shaft (32) to rotate through a linkage belt (36), the two vibrating screen shafts (32) synchronously drive corresponding eccentric cams (33) to eccentrically rotate, and the eccentric cams (33) are in intermittent collision contact with corresponding trapezoidal stoppers (34) to drive a pair of screen plates (3) to perform reciprocating vibrating screen operation;

step four, adding silicon, carbon and other cathode materials into the vertical cylinder (5) through a feeding channel steel (54), the spiral rotation of the spiral shaft (51) and the spiral blade (52) drives the negative electrode material to spirally rise upwards and enter the screen cylinder (11) through the inclined through hole (56), the anode material is fed in through a crushing reamer (15) for crushing operation, the crushed anode material falls onto the screen plate (3) above through a screen cylinder (11), the large-particle anode material enters into the transverse through hole (55) along the screen plate (3) above, the rest of the cathode material falls onto the screen plate (3) below, the middle particle cathode material enters the transverse through hole (55) along the screen plate (3) below, the rest small-particle cathode materials fall to the bottom in the bottom box (1), and the large-particle cathode materials and the middle-particle cathode materials are subjected to secondary crushing by repeating the steps in the spiral rotation of the spiral blade (52);

and fifthly, finally, the cathode material falls to the bottom in the bottom box (1) after being completely crushed and sieved, and the crushed and mixed cathode material is driven to be discharged through a discharge barrel (63) under the action of a pushing blade (61) by virtue of synchronous spiral rotation of a discharge shaft (6) and the pushing blade (61) and a threaded cover is opened, and is collected and bagged.