Grinding device for graphite negative electrode material of lithium battery and operation method of grinding device

Abstract

The invention discloses a lithium battery graphite negative electrode material grinding device and an operation method thereof, and relates to the technical field of lithium battery production, the lithium battery graphite negative electrode material grinding device comprises a multi-stage grinding mechanism and an inclined heating ring installed in the multi-stage grinding mechanism, and the top of the multi-stage grinding mechanism is provided with a dustproof crushing mechanism; the multi-stage grinding mechanism comprises a grinding box, supporting legs are fixedly installed on the periphery of the bottom of the grinding box, a supporting frame is fixedly installed on the inner side of the top of the grinding box, and a conical motor cover is fixedly installed in the center of the top of the supporting frame. A vertical rotating rod is driven to rotate by utilizing a rotating motor, and a grinding roller can rotate around the vertical rotating rod and can rotate around a rotating shaft and a horizontal rotating rod by utilizing the principle that a first bevel gear is in meshed connection with a bevel gear ring; therefore, the graphite on the grinding disc with the thick holes and the grinding disc with the thin holes can be fully ground.

Description

Technical Field

[0001] The invention relates to the technical field of lithium battery production, and in particular to a grinding device for a lithium battery graphite negative electrode material and an operating method thereof. Background Art

[0002] Graphite is used as the negative electrode raw material in the production process of lithium batteries. Before the graphite is used, the graphite raw material needs to be crushed and then the crushed graphite is subjected to subsequent process treatment for use. In the prior art, the existing lithium battery graphite negative electrode material shaping equipment is not convenient for re-grinding the raw materials with larger particles after grinding, which affects the crushing quality and efficiency of the raw materials.

[0003] Announcement No. CN 219129476 U discloses a lithium battery graphite negative electrode material shaping device. Through the design of the filter screen, the second grinding block, the second grinding disc and the second cylinder, the filter screen can be set to filter the raw materials with larger particles after grinding, and the raw materials with larger particles can fall on the second grinding disc. The second grinding block can be pushed by the cooperation of the second cylinder, the second installation box, the second drive motor and the rotating rod, so that the second grinding block can be fitted with the second grinding disc. The second driving motor can drive the second grinding block to rotate by cooperating with the rotating rod, so that the second grinding block can cooperate with the second grinding disc to facilitate the re-grinding of the raw materials with larger particles to improve the grinding accuracy. However, the above patent still has the following problems in actual use: Although the lithium battery graphite negative electrode material shaping equipment can filter raw materials with larger particles after grinding through the setting of the filter screen, the raw materials with larger particles filtered out can fall on the second grinding disk, and the second grinding block can be pushed to grind again through the cooperation of the second cylinder, the second installation box, the second drive motor and the rotating rod, but the filter screen is not provided with a related cleaning structure to clean the filter screen, resulting in the filter screen being easily blocked, which is not only not conducive to the filtering of the graphite negative electrode material, but also affects the grinding effect of the graphite negative electrode material, and cannot perform multi-stage grinding according to the particle size of the ground graphite, resulting in the powder of the ground graphite negative electrode material being not uniform, and large particles of graphite will cause damage to the grinding disk.

[0004] Therefore, a grinding device for graphite negative electrode material of lithium battery and an operating method thereof are proposed to solve the above-mentioned problems. Summary of the invention

[0005] The purpose of the present invention is to provide a grinding device for lithium battery graphite negative electrode materials and an operating method thereof, so as to solve the problem that the lithium battery graphite negative electrode material shaping equipment proposed in the above background technology can filter the raw materials with larger particles after grinding through the setting of the filter screen, and the raw materials with larger particles filtered out can fall on the second grinding disk. Through the cooperation of the second cylinder, the second installation box, the second drive motor and the rotating rod, the second grinding block can be pushed for re-grinding, but the filter screen is not provided with a related cleaning structure to clean the filter screen, which causes the filter screen to be easily blocked, which is not only not conducive to the filtering of the graphite negative electrode material, but also affects the grinding effect of the graphite negative electrode material. It is impossible to perform multi-stage grinding according to the particle size of the ground graphite, resulting in the problem that the powder of the ground graphite negative electrode material is not uniform enough, and large particles of graphite will cause damage to the grinding disk.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: a grinding device for lithium battery graphite negative electrode material and an operating method thereof, comprising a multi-stage grinding mechanism, and an inclined heating ring installed inside the multi-stage grinding mechanism; A dust-proof crushing mechanism is provided on the top of the multi-stage grinding mechanism, and a dust-proof bracket is provided on the top of the dust-proof crushing mechanism; Also includes: The multi-stage grinding mechanism comprises a grinding box, support legs are fixedly installed around the bottom of the grinding box, and a support frame is fixedly installed on the inner side of the top of the grinding box; Among them, a conical motor cover is fixedly installed at the top center of the support frame, the inclined heating ring is symmetrically installed inside the grinding box, and a fixed cover is fixedly installed at the bottom of the inclined heating ring; A rotating motor is fixedly installed inside the conical motor cover, and a vertical rotating rod is fixedly connected to the output end of the rotating motor. Rotating shafts are symmetrically installed around the vertical rotating rod.

[0007] Preferably, the end of the rotating shaft is rotatably connected to a horizontal rotating rod, a grinding roller is fixedly installed on the outer side of the horizontal rotating rod, a telescopic slide groove is opened inside the grinding roller, a telescopic spring is fixedly installed inside the telescopic slide groove, a grinding hammer is fixedly installed on the end of the telescopic spring, and a plurality of cleaning brushes are fixedly installed on the outer side of the grinding roller.

[0008] By adopting the above technical solution, the vertical rotating rod is driven to rotate by a rotating motor, and the principle of meshing connection between the first bevel gear and the bevel gear ring is utilized, so that the grinding roller can be rotated around the vertical rotating rod, and at the same time, the grinding roller can be rotated around the rotating axis and the horizontal rotating rod, so that the graphite on the coarse perforated grinding disc and the fine perforated grinding disc can be fully ground.

[0009] Preferably, a first bevel gear is fixedly installed on the end of the horizontal rotating rod, and a bevel gear ring is meshingly connected at the bottom of the first bevel gear. The bevel gear ring is fixedly installed inside the fixed cover, a coarse perforated grinding disk is fixedly installed on the bottom of the top fixed cover, and a fine perforated grinding disk is rotatably connected to the bottom of the bottom fixed cover.

[0010] By adopting the above technical solution, the grinding hammer continuously strikes the graphite through the telescopic slide groove inside the grinding roller and under the elastic force of the telescopic spring, thereby improving the graphite crushing effect. Since the aperture sizes inside the coarse perforated grinding disk and the fine perforated grinding disk are different, and the number of the first bevel gear and the bevel gear ring teeth at the top is less than the number of the first bevel gear and the bevel gear ring teeth at the bottom, the number of revolutions of the top grinding roller is less than the number of revolutions of the bottom grinding roller, thereby achieving rough crushing of the graphite on the coarse perforated grinding disk.

[0011] Preferably, a conical block is fixedly installed at the bottom of the vertical rotating rod, a rotating main gear is fixedly connected to the bottom center position of the conical block, a fixed support plate is rotatably connected to the bottom of the rotating main gear, a first fixed support rod is fixedly installed on the outer side of the fixed support plate, and the first fixed support rod is fixedly connected to the grinding box.

[0012] By adopting the above technical solution, the graphite on the fine-perforated grinding disc is finely crushed, and can be crushed accordingly according to the size of the graphite, thereby improving the graphite crushing effect and thus accelerating the efficiency of graphite crushing and grinding.

[0013] Preferably, the outer side of the rotating main gear is meshingly connected with a plurality of rotating slave gears, the rotating slave gears are rotationally connected to the fixed support plate, the outer side of the rotating slave gears is meshingly connected with a meshing gear ring, the meshing gear ring is rotationally connected to the fixed support plate, and rotating connecting rods are fixedly installed around the outer side of the meshing gear ring, and the rotating connecting rods are fixedly installed on the bottom of the fine perforated grinding plate.

[0014] By adopting the above technical solution, the main rotating gear is driven to rotate by the vertical rotating rod, and the meshing connection between the main rotating gear, the rotating slave gear and the meshing gear ring is utilized, so that the meshing gear ring can drive the rotating connecting rod and the fine perforated grinding disk to rotate.

[0015] Preferably, a second fixed support rod is fixedly installed around the bottom of the fixed support plate, a supporting bottom plate is fixedly installed on the bottom of the second fixed support rod, a lifting motor is fixedly installed at the bottom center of the support bottom plate, the output end of the lifting motor is fixedly connected to a lifting threaded rod, the outer side of the lifting threaded rod is threadedly connected to a lifting threaded bracket, a lifting sliding rod is fixedly installed around the bottom of the lifting threaded bracket, a lifting chassis is fixedly installed on the bottom of the lifting sliding rod, a grinding motor is fixedly installed at the top center of the lifting chassis, a conical grinding block is fixedly connected to the output end of the grinding motor, and a collection box is provided on the outer side of the bottom of the conical grinding block.

[0016] By adopting the above technical scheme, the grinding of graphite can be achieved through the relative rotation between the fine perforated grinding disk and the grinding roller, thereby improving the efficiency of graphite grinding. When the ground graphite falls into the collection box at the bottom, if the graphite reaches the corresponding grinding effect, it can be used directly. When the graphite grinding does not reach the corresponding grinding effect, the lifting motor can be started to drive the lifting threaded rod to rotate, so that the lifting threaded bracket drives the lifting sliding rod and the lifting chassis to descend, and the conical grinding block is moved to the inside of the collection box, and the grinding motor is started to drive the conical grinding block to rotate, so as to perform secondary grinding on the graphite and improve the effect of graphite grinding. By setting the inclined heating ring, not only can the graphite be guided to a certain extent, but the graphite can also be heated to avoid the graphite from being wet, thereby affecting the effect of graphite grinding.

[0017] Preferably, the dust-proof crushing mechanism includes a crushing box, a crushing rotating groove is provided inside the crushing box, an inclined feeding port is provided near the top of the crushing rotating groove, a guide cover is fixedly installed at the bottom of the crushing box, the guide cover is fixedly installed on the top of the grinding box, and a crushing motor is fixedly installed on one side of the crushing box.

[0018] By adopting the above technical solution, the crushing motor is used to drive the crushing main gear to rotate, and the meshing connection between the crushing main gear and the crushing slave gear is used to achieve relative rotation of the two crushing rollers, so that the graphite can be initially crushed.

[0019] Preferably, the output end of the crushing motor is fixedly connected to a crushing main gear, one side of the crushing main gear is meshingly connected to a crushing slave gear, one side of the crushing main gear and the crushing slave gear are both fixedly connected to a crushing roller, a plurality of protective grooves are opened inside the crushing roller, a plurality of protective springs are fixedly installed inside the protective grooves, and a crushing knife is fixedly connected to the end of the protective spring.

[0020] By adopting the above technical solution, the crushing knife can be moved by utilizing the elastic force of the protective spring inside the protective groove, thereby protecting the crushing knife and avoiding the phenomenon that the crushing knife is damaged due to the hard texture of some graphite blocks.

[0021] Preferably, the dustproof bracket is fixedly installed on the top of the crushing box, a second motor cover is fixedly installed on one side of the top of the dustproof bracket, an opening and closing motor is fixedly installed on one side of the inner side of the second motor cover, the output end of the opening and closing motor is fixedly connected to a sprocket transmission assembly, one side of the sprocket transmission assembly is symmetrically connected to an opening and closing bidirectional threaded rod, the outer sides of the two opening and closing bidirectional threaded rods are symmetrically threaded with opening and closing threaded sleeves, an opening and closing dustproof plate is fixedly installed on the top of the opening and closing threaded sleeve on one side, and the opening and closing dustproof plate is slidably connected to the dustproof bracket.

[0022] By adopting the above technical scheme, the opening and closing motor is started to drive the sprocket transmission assembly and the opening and closing bidirectional threaded rod to rotate, so that the opening and closing threaded sleeve drives the opening and closing dustproof plate to move relatively, so as to realize the expansion or closing of the dustproof bracket, which not only makes it convenient to put the graphite into the crushing box for crushing, but also can avoid the dust generated by crushing and grinding from flying around, thereby causing air pollution.

[0023] Compared with the prior art, the invention has the following beneficial effects: the grinding device for graphite negative electrode material of lithium battery and the operating method thereof use a rotating motor to drive the vertical rotating rod to rotate, and use the principle of meshing connection between the first bevel gear and the bevel gear ring to realize the rotation of the grinding roller around the vertical rotating rod, and at the same time, the grinding roller can be rotated around the rotating shaft and the horizontal rotating rod, so that the graphite on the coarse perforated grinding disc and the fine perforated grinding disc can be fully ground, and the crushing motor is used to drive the crushing main gear to rotate, and the characteristics of meshing connection between the crushing main gear and the crushing slave gear are used to realize the relative rotation of the two crushing rollers, so that the graphite can be preliminarily crushed. The specific contents are as follows: 1. By setting a multi-stage grinding mechanism, not only can the rotating motor be used to drive the vertical rotating rod to rotate, but also the principle of meshing connection between the first bevel gear and the bevel gear ring can be used to realize the rotation of the grinding roller around the vertical rotating rod, and at the same time, the grinding roller can be rotated around the rotating shaft and the horizontal rotating rod, so that the graphite on the coarse perforated grinding disk and the fine perforated grinding disk can be fully ground, and the grinding hammer can continuously strike the graphite through the telescopic slide groove inside the grinding roller and under the elastic force of the telescopic spring, so that the graphite crushing effect can be improved. Since the aperture sizes inside the coarse perforated grinding disk and the fine perforated grinding disk are different, and the number of teeth of the first bevel gear and the bevel gear ring at the top is less than that of the first bevel gear and the bevel gear ring at the bottom, the number of revolutions of the top grinding roller is less than that of the bottom grinding roller, so that the graphite on the coarse perforated grinding disk can be roughly crushed, and the graphite on the fine perforated grinding disk can be finely crushed. The graphite can be crushed accordingly according to the size of the graphite, thereby improving the graphite crushing effect. The efficiency of graphite crushing and grinding is accelerated, and the main rotating gear is driven to rotate by the vertical rotating rod. The meshing connection between the main rotating gear, the rotating slave gear and the meshing gear ring is utilized to enable the meshing gear ring to drive the rotating connecting rod and the fine perforated grinding disc to rotate. The graphite grinding can be achieved through the relative rotation between the fine perforated grinding disc and the grinding roller, thereby improving the efficiency of graphite grinding. When the ground graphite falls into the collection box at the bottom, if the graphite reaches the corresponding grinding effect, it can be used directly. When the graphite grinding does not reach the corresponding grinding effect, the lifting motor can be started to drive the lifting threaded rod to rotate, so that the lifting threaded bracket drives the lifting sliding rod and the lifting chassis to descend, and the conical grinding block is moved to the inside of the collection box, and the grinding motor is started to drive the conical grinding block to rotate, thereby performing secondary grinding on the graphite, thereby improving the graphite grinding effect. By setting the inclined heating ring, not only can the graphite be guided to a certain extent, but also the graphite can be heated to avoid the graphite from being damp, thereby affecting the graphite grinding effect. 2. By setting up the dust-proof crushing mechanism, not only can the crushing motor be used to drive the main crushing gear to rotate, but also the meshing connection between the main crushing gear and the slave crushing gear can be used to realize the relative rotation of the two crushing rollers, so that the graphite can be initially crushed. The elastic force of the protective spring inside the protective groove can realize the movement of the crushing knife, thereby protecting the crushing knife and avoiding the phenomenon that some graphite blocks are relatively hard and thus cause damage to the crushing knife. By starting the opening and closing motor to drive the sprocket drive assembly and the opening and closing two-way threaded rod to rotate, the opening and closing threaded sleeve drives the opening and closing dustproof plate to move relatively, and the dustproof bracket can be expanded or closed, which not only facilitates the placement of graphite into the crushing box for crushing, but also can avoid the dust generated by crushing and grinding from flying around, thereby causing air pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the multi-stage grinding mechanism in the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the cross section of the grinding box in the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the coarse holed grinding disc and the fine holed grinding disc in the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the cross section of the grinding roller in the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the conical block cross section in the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the conical grinding block and the collection box in the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the dust-proof crushing mechanism in the present invention; Fig. 9 It is a schematic diagram of the three-dimensional structure of the crushing roller section in the present invention; Fig.10 It is a schematic diagram of the three-dimensional structure of the dustproof bracket in the present invention; Fig.11 It is a schematic diagram of the three-dimensional structure of the opening and closing dustproof plate in the present invention.

[0025] In the figure: 1. multi-stage grinding mechanism; 101. grinding box; 102. supporting legs; 103. supporting frame; 104. conical motor cover; 105. tilting heating ring; 106. fixed cover; 107. rotating motor; 108. vertical rotating rod; 109. rotating shaft; 110. horizontal rotating rod; 111. grinding roller; 112. telescopic slide; 113. telescopic spring; 114. grinding hammer; 115. cleaning brush; 116. first bevel gear; 117. bevel gear ring; 118. coarse perforated grinding disc; 119. fine perforated grinding disc; 120. conical block; 121. rotating main gear; 122. fixed supporting disc; 123. first fixed supporting rod; 124. rotating slave gear; 125. meshing gear ring; 126. rotating connecting rod; 127. second fixed supporting rod ;128, support base plate;129, lifting motor;130, lifting threaded rod;131, lifting threaded bracket;132, lifting sliding rod;133, lifting chassis;134, grinding motor;135, conical grinding block;136, collecting box;2, dust-proof crushing mechanism;201, crushing box;202, crushing rotating groove;203, inclined feeding port;204, guide cover;205, crushing motor;206, crushing main gear;207, crushing slave gear;208, crushing roller;209, protective groove;210, protective spring;211, crushing knife;212, dust-proof bracket;213, second motor cover;214, opening and closing motor;215, sprocket transmission assembly;216, opening and closing bidirectional threaded rod;217, opening and closing threaded sleeve;218, opening and closing dust-proof plate. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-Figure 11The present invention provides a technical solution: a grinding device for lithium battery graphite negative electrode material and an operating method thereof, comprising a multi-stage grinding mechanism 1, and an inclined heating ring 105 installed inside the multi-stage grinding mechanism 1, a dust-proof crushing mechanism 2 is arranged on the top of the multi-stage grinding mechanism 1, and a dust-proof bracket 212 is arranged on the top of the dust-proof crushing mechanism 2, the multi-stage grinding mechanism 1 comprises a grinding box 101, support legs 102 are fixedly installed around the bottom of the grinding box 101, a support frame 103 is fixedly installed on the inner side of the top of the grinding box 101, wherein a conical motor cover 104 is fixedly installed at the top center position of the support frame 103, the inclined heating ring 105 is symmetrically installed inside the grinding box 101, and a fixed cover 106 is fixedly installed on the bottom of the inclined heating ring 105, wherein the conical A rotating motor 107 is fixedly installed inside the motor cover 104, and a vertical rotating rod 108 is fixedly connected to the output end of the rotating motor 107. A rotating shaft 109 is symmetrically installed around the vertical rotating rod 108. The end of the rotating shaft 109 is rotatably connected to a horizontal rotating rod 110, and a grinding roller 111 is fixedly installed on the outer side of the horizontal rotating rod 110. The rotating motor 107 is used to drive the vertical rotating rod 108 to rotate. By utilizing the principle of meshing connection between the first bevel gear 116 and the bevel gear ring 117, the grinding roller 111 can be rotated around the vertical rotating rod 108, and at the same time, the grinding roller 111 can be rotated around the rotating shaft 109 and the horizontal rotating rod 110, so that the graphite on the coarse perforated grinding disk 118 and the fine perforated grinding disk 119 can be fully ground.

[0028] A telescopic slot 112 is provided inside the grinding roller 111, a telescopic spring 113 is fixedly installed inside the telescopic slot 112, a grinding hammer 114 is fixedly installed at the end of the telescopic spring 113, a plurality of cleaning brushes 115 are fixedly installed on the outside of the grinding roller 111, a first bevel gear 116 is fixedly installed at the end of the horizontal rotating rod 110, a bevel gear ring 117 is meshedly connected at the bottom of the first bevel gear 116, and the bevel gear ring 117 is fixedly installed inside the fixed cover 106, a coarse perforated grinding disc 118 is fixedly installed at the bottom of the top fixed cover 106, a fine perforated grinding disc 119 is rotatably connected at the bottom of the bottom fixed cover 106, and a grinding disc 119 is rotated to rotate ... Under the elastic force of 13, the grinding hammer 114 continuously strikes the graphite, thereby improving the graphite crushing effect. Since the aperture sizes inside the coarse perforated grinding disk 118 and the fine perforated grinding disk 119 are different, and the number of teeth of the first bevel gear 116 and the bevel gear ring 117 at the top is less than the number of teeth of the first bevel gear 116 and the bevel gear ring 117 at the bottom, the number of revolutions of the top grinding roller 111 is less than the number of revolutions of the bottom grinding roller 111, thereby achieving rough crushing of the graphite on the coarse perforated grinding disk 118 and fine crushing of the graphite on the fine perforated grinding disk 119. The graphite can be crushed accordingly according to its size, thereby improving the graphite crushing effect and accelerating the efficiency of graphite crushing and grinding.

[0029] A conical block 120 is fixedly installed at the bottom of the vertical rotating rod 108, and a rotating main gear 121 is fixedly connected to the center position of the bottom of the conical block 120. The bottom of the rotating main gear 121 is rotatably connected to a fixed support plate 122. A first fixed support rod 123 is fixedly installed on the outer side of the fixed support plate 122. The first fixed support rod 123 is fixedly connected to the grinding box 101. The outer side of the rotating main gear 121 is meshedly connected to a plurality of rotating slave gears 124. The rotating slave gears 124 are rotatably connected to the fixed support plate 122. The outer side of the rotating slave gear 124 is meshedly connected to a meshing gear. The meshing gear ring 125 is rotatably connected with the fixed support disk 122. Rotating connecting rods 126 are fixedly installed around the outer sides of the meshing gear ring 125. The rotating main gear 121 is driven to rotate by the vertical rotating rod 108. The meshing gear ring 125 can drive the rotating connecting rod 126 and the fine perforated grinding disk 119 to rotate by utilizing the meshing connection characteristics between the rotating main gear 121, the rotating slave gear 124 and the meshing gear ring 125. The relative rotation between the fine perforated grinding disk 119 and the grinding roller 111 can realize the grinding of graphite, thereby improving the efficiency of graphite grinding. The rotating connecting rod 126 is fixedly installed on the bottom of the fine perforated grinding disk 119, and a second fixed support rod 127 is fixedly installed around the bottom of the fixed support disk 122, and a supporting bottom plate 128 is fixedly installed at the bottom of the second fixed support rod 127, and a lifting motor 129 is fixedly installed at the bottom center of the supporting bottom plate 128, and an output end of the lifting motor 129 is fixedly connected to a lifting threaded rod 130, and the outer side of the lifting threaded rod 130 is threadedly connected to a lifting threaded bracket 131, and a lifting sliding rod 132 is fixedly installed around the bottom of the lifting threaded bracket 131, and a lifting chassis 133 is fixedly installed at the bottom of the lifting sliding rod 132, and a grinding motor 134 is fixedly installed at the top center of the lifting chassis 133, and a conical grinding block 13 is fixedly connected to the output end of the grinding motor 134 5. A collecting box 136 is provided on the outer side of the bottom of the conical grinding block 135. When the ground graphite falls into the collecting box 136 at the bottom, if the graphite reaches the corresponding grinding effect, it can be used directly. When the graphite grinding does not reach the corresponding grinding effect, the lifting motor 129 can be started to drive the lifting threaded rod 130 to rotate, so that the lifting threaded bracket 131 drives the lifting sliding rod 132 and the lifting chassis 133 to descend, and the conical grinding block 135 is moved to the inside of the collecting box 136, and the grinding motor 134 is started to drive the conical grinding block 135 to rotate, so as to perform secondary grinding on the graphite and improve the graphite grinding effect. By setting the inclined heating ring 105, not only can the graphite be guided to a certain extent, but also the graphite can be heated to avoid the graphite from being wet, thereby affecting the graphite grinding effect.

[0030] The dust-proof crushing mechanism 2 includes a crushing box 201, a crushing rotating groove 202 is provided inside the crushing box 201, an inclined feeding port 203 is provided near the top of the crushing rotating groove 202 of the crushing box 201, a guide cover 204 is fixedly installed at the bottom of the crushing box 201, and the guide cover 204 is fixedly installed on the top of the grinding box 101, and a crushing motor 205 is fixedly installed on one side of the crushing box 201, and the output end of the crushing motor 205 is fixedly connected to a crushing main gear 206, and one side of the crushing main gear 206 is meshedly connected to a crushing slave gear 207, and one side of the crushing main gear 206 and the crushing slave gear 207 are fixedly connected to a crushing roller 208, and the crushing roller 208 is fixedly connected to the output end of the crushing motor 205. A plurality of protective grooves 209 are provided inside, a plurality of protective springs 210 are fixedly installed inside the protective grooves 209, and a crushing knife 211 is fixedly connected to the end of the protective spring 210. The crushing motor 205 is used to drive the crushing main gear 206 to rotate, and the meshing connection between the crushing main gear 206 and the crushing slave gear 207 is used to realize the relative rotation of the two crushing rollers 208, so that the graphite can be initially crushed. The elastic force of the protective spring 210 inside the protective groove 209 can realize the movement of the crushing knife 211, so as to protect the crushing knife 211 and avoid the phenomenon that the crushing knife 211 is damaged due to the hard texture of some graphite blocks.

[0031] The dustproof bracket 212 is fixedly installed on the top of the crushing box 201, and a second motor cover 213 is fixedly installed on one side of the top of the dustproof bracket 212. An opening and closing motor 214 is fixedly installed on one side of the inner side of the second motor cover 213. A sprocket transmission assembly 215 is fixedly connected to the output end of the opening and closing motor 214. One side of the sprocket transmission assembly 215 is symmetrically connected to an opening and closing bidirectional threaded rod 216. The outer sides of the two opening and closing bidirectional threaded rods 216 are symmetrically threadedly connected to an opening and closing threaded sleeve 217. The opening and closing threaded sleeve 217 on one side An opening and closing dustproof plate 218 is fixedly installed on the top, and the opening and closing dustproof plate 218 is slidably connected to the dustproof bracket 212. By starting the opening and closing motor 214 to drive the sprocket transmission assembly 215 and the opening and closing bidirectional threaded rod 216 to rotate, the opening and closing threaded sleeve 217 drives the opening and closing dustproof plate 218 to move relatively, so as to realize the expansion or closing of the dustproof bracket 212, which not only makes it convenient to put the graphite into the crushing box 201 for crushing, but also can avoid the dust generated by crushing and grinding from flying around, thereby causing air pollution.

[0032] Working principle: Before using this kind of lithium battery graphite negative electrode material grinding device and its operation method, it is necessary to first check the overall condition of the device to ensure that it can work normally. Figure 1 - Fig.11 As shown, first, by starting the opening and closing motor 214 to drive the sprocket drive assembly 215 and the opening and closing bidirectional threaded rod 216 to rotate, the opening and closing threaded sleeve 217 drives the opening and closing dustproof plate 218 to move relatively, so that the dustproof bracket 212 can be unfolded, and the graphite is introduced into the crushing box 201 and the opening and closing dustproof plate 218 is closed, which is not only convenient for putting the graphite into the crushing box 201 for crushing, but also can avoid the dust generated by crushing and grinding from flying around, thereby causing air pollution. The crushing motor 205 is used to drive the crushing main gear 206 to rotate, and the meshing connection between the crushing main gear 206 and the crushing slave gear 207 is used to realize the relative rotation of the two crushing rollers 208, so that the graphite can be preliminarily crushed. The elastic force of the protective spring 210 inside the protective groove 209 can realize the movement of the crushing knife 211, thereby protecting the crushing knife 211 and avoiding the phenomenon that some graphite blocks are hard and thus cause damage to the crushing knife 211. Secondly, by setting the inclined heating ring 105, not only can the graphite be guided to a certain extent, but also the graphite can be heated to avoid the graphite from getting wet, thereby affecting the graphite grinding effect. The rotating motor 107 is used to drive the vertical rotating rod 108 to rotate. By using the principle of meshing connection between the first bevel gear 116 and the bevel gear ring 117, the grinding roller 111 can be rotated around the vertical rotating rod 108, and the grinding roller 111 can be rotated around the rotating shaft 109 and the horizontal rotating rod 110. Therefore, the graphite on the coarse perforated grinding disk 118 and the fine perforated grinding disk 119 can be fully ground, and the graphite on the coarse perforated grinding disk 118 and the fine perforated grinding disk 119 can be fully ground. Under the action of force, the grinding hammer 114 continuously strikes the graphite, thereby improving the effect of graphite crushing. Since the aperture sizes inside the coarse perforated grinding disk 118 and the fine perforated grinding disk 119 are different, and the number of teeth of the first bevel gear 116 and the bevel gear ring 117 at the top are less than the number of teeth of the first bevel gear 116 and the bevel gear ring 117 at the bottom, the number of revolutions of the top grinding roller 111 is less than the number of revolutions of the bottom grinding roller 111, thereby achieving rough crushing of the graphite on the coarse perforated grinding disk 118 and fine crushing of the graphite on the fine perforated grinding disk 119. The graphite can be crushed accordingly according to its size, thereby improving the graphite crushing effect and accelerating the efficiency of graphite crushing and grinding.

[0033] Finally, the main rotating gear 121 is driven to rotate by the vertical rotating rod 108, and the meshing connection between the main rotating gear 121, the rotating slave gear 124 and the meshing gear ring 125 is utilized to enable the meshing gear ring 125 to drive the rotating connecting rod 126 and the fine perforated grinding disk 119 to rotate. The graphite can be ground by the relative rotation between the fine perforated grinding disk 119 and the grinding roller 111, thereby improving the efficiency of graphite grinding. When the ground graphite falls into the collection box 136 at the bottom, if the graphite reaches the corresponding grinding effect, it can be used directly. When the graphite grinding does not reach the corresponding grinding effect, the lifting motor 129 can be started to drive the lifting threaded rod 130 to rotate, so that the lifting threaded bracket 131 drives the lifting sliding rod 132 and the lifting chassis 133 to descend, and the conical grinding block 135 is moved to the inside of the collection box 136, and the grinding motor 134 is started to drive the conical grinding block 135 to rotate, thereby performing secondary grinding on the graphite to improve the graphite grinding effect.

[0034] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A grinding device for a lithium battery graphite negative electrode material, comprising a multi-stage grinding mechanism (1), and an inclined heating ring (105) installed inside the multi-stage grinding mechanism (1); A dust-proof crushing mechanism (2) is provided on the top of the multi-stage grinding mechanism (1), and a dust-proof bracket (212) is provided on the top of the dust-proof crushing mechanism (2); It is characterized in that Also includes: The multi-stage grinding mechanism (1) comprises a grinding box (101), support legs (102) are fixedly mounted around the bottom of the grinding box (101), and a support frame (103) is fixedly mounted on the inner side of the top of the grinding box (101); A conical motor cover (104) is fixedly mounted at the top center of the support frame (103); the inclined heating ring (105) is symmetrically mounted inside the grinding box (101) in the upper and lower parts; and a fixed cover (106) is fixedly mounted at the bottom of the inclined heating ring (105); A rotating motor (107) is fixedly installed inside the conical motor cover (104), an output end of the rotating motor (107) is fixedly connected to a vertical rotating rod (108), and rotating shafts (109) are symmetrically installed around the vertical rotating rod (108).

2. The grinding device for lithium battery graphite negative electrode material according to claim 1, characterized in that: The end of the rotating shaft (109) is rotatably connected to a horizontal rotating rod (110), a grinding roller (111) is fixedly mounted on the outer side of the horizontal rotating rod (110), a telescopic slide groove (112) is provided inside the grinding roller (111), a telescopic spring (113) is fixedly mounted inside the telescopic slide groove (112), a grinding hammer (114) is fixedly mounted on the end of the telescopic spring (113), and a plurality of cleaning brushes (115) are fixedly mounted on the outer side of the grinding roller (111).

3. The grinding device for lithium battery graphite negative electrode material according to claim 2, characterized in that: A first bevel gear (116) is fixedly mounted on the end of the horizontal rotating rod (110); a bevel gear ring (117) is meshingly connected to the bottom of the first bevel gear (116); the bevel gear ring (117) is fixedly mounted inside the fixed cover (106); a coarse perforated grinding disc (118) is fixedly mounted on the bottom of the top fixed cover (106); and a fine perforated grinding disc (119) is rotatably connected to the bottom of the bottom fixed cover (106).

4. The grinding device for lithium battery graphite negative electrode material according to claim 3, characterized in that: A conical block (120) is fixedly mounted at the bottom of the vertical rotating rod (108); a rotating main gear (121) is fixedly connected to the center position of the bottom of the conical block (120); a fixed support plate (122) is rotatably connected to the bottom of the rotating main gear (121); a first fixed support rod (123) is fixedly mounted on the outer side of the fixed support plate (122); and the first fixed support rod (123) is fixedly connected to the grinding box (101).

5. The grinding device for lithium battery graphite negative electrode material according to claim 4, characterized in that: The outer side of the rotating master gear (121) is meshedly connected with a plurality of rotating slave gears (124), the rotating slave gears (124) are rotationally connected to the fixed support disk (122), the outer side of the rotating slave gear (124) is meshedly connected with a meshing gear ring (125), the meshing gear ring (125) is rotationally connected to the fixed support disk (122), and rotating connecting rods (126) are fixedly installed around the outer side of the meshing gear ring (125), and the rotating connecting rods (126) are fixedly installed at the bottom of the fine perforated grinding disk (119).

6. The grinding device for lithium battery graphite negative electrode material according to claim 5, characterized in that: A second fixed support rod (127) is fixedly mounted around the bottom of the fixed support plate (122); a support base plate (128) is fixedly mounted on the bottom of the second fixed support rod (127); a lifting motor (129) is fixedly mounted at the center of the bottom of the support base plate (128); an output end of the lifting motor (129) is fixedly connected to a lifting threaded rod (130); the outer side of the lifting threaded rod (130) is threadedly connected to a lifting threaded bracket (131); a lifting sliding rod (132) is fixedly mounted around the bottom of the lifting threaded bracket (131); a lifting chassis (133) is fixedly mounted on the bottom of the lifting sliding rod (132); a grinding motor (134) is fixedly mounted at the center of the top of the lifting chassis (133); a conical grinding block (135) is fixedly connected to the output end of the grinding motor (134); a collecting box (136) is provided on the outer side of the bottom of the conical grinding block (135).

7. The grinding device for lithium battery graphite negative electrode material according to claim 1, characterized in that: The dust-proof crushing mechanism (2) comprises a crushing box (201), a crushing rotating groove (202) is provided inside the crushing box (201), an inclined feeding port (203) is provided near the top of the crushing rotating groove (202) of the crushing box (201), a guide cover (204) is fixedly mounted on the bottom of the crushing box (201), the guide cover (204) is fixedly mounted on the top of the grinding box (101), and a crushing motor (205) is fixedly mounted on one side of the crushing box (201).

8. The grinding device for lithium battery graphite negative electrode material according to claim 7, characterized in that: The output end of the crushing motor (205) is fixedly connected to a crushing main gear (206), one side of the crushing main gear (206) is meshingly connected to a crushing slave gear (207), one side of each of the crushing main gear (206) and the crushing slave gear (207) is fixedly connected to a crushing roller (208), a plurality of protective grooves (209) are provided inside the crushing roller (208), a plurality of protective springs (210) are fixedly installed inside the protective grooves (209), and a crushing knife (211) is fixedly connected to the end of the protective spring (210).

9. The grinding device for lithium battery graphite negative electrode material according to claim 8, characterized in that: The dustproof bracket (212) is fixedly mounted on the top of the crushing box (201); a second motor cover (213) is fixedly mounted on one side of the top of the dustproof bracket (212); an opening and closing motor (214) is fixedly mounted on one side of the interior of the second motor cover (213); an output end of the opening and closing motor (214) is fixedly connected to a sprocket transmission assembly (215); an opening and closing bidirectional threaded rod (216) is symmetrically connected to one side of the sprocket transmission assembly (215); the outer sides of the two opening and closing bidirectional threaded rods (216) are symmetrically threadedly connected to an opening and closing threaded sleeve (217); an opening and closing dustproof plate (218) is fixedly mounted on the top of one side of the opening and closing threaded sleeve (217); and the opening and closing dustproof plate (218) is slidably connected to the dustproof bracket (212).

10. An operating method of a grinding device for a lithium battery graphite negative electrode material, using the grinding device for a lithium battery graphite negative electrode material as claimed in claim 9, the operating method steps are as follows: Step 1: By starting the opening and closing motor (214) to drive the sprocket drive assembly (215) and the opening and closing bidirectional threaded rod (216) to rotate, the opening and closing threaded sleeve (217) drives the opening and closing dustproof plate (218) to move relatively, so as to realize the expansion of the dustproof bracket (212), introduce the graphite into the crushing box (201) and close the opening and closing dustproof plate (218), which not only facilitates the placement of graphite into the crushing box (201) for crushing, but also prevents the dust generated by crushing and grinding from flying around, thereby causing air pollution. The crushing motor (205) drives the crushing main gear (206) to rotate, and the meshing connection between the crushing main gear (206) and the crushing slave gear (207) is utilized to realize the relative rotation of the two crushing rollers (208), so that the graphite can be initially crushed, and the elastic force of the protection spring (210) inside the protection groove (209) can realize the movement of the crushing knife (211), so as to protect the crushing knife (211) and avoid the phenomenon that the crushing knife (211) is damaged due to the hard texture of some graphite blocks; Step 2: By setting the inclined heating ring (105), not only can the graphite be guided to a certain extent, but also the graphite can be heated to prevent the graphite from being wet, thereby affecting the graphite grinding effect. The rotating motor (107) is used to drive the vertical rotating rod (108) to rotate. By using the principle of meshing connection between the first bevel gear (116) and the bevel gear ring (117), the grinding roller (111) can be rotated around the vertical rotating rod (108), and the grinding roller (111) can be rotated around the rotating shaft (109) and the horizontal rotating rod (110), so that the graphite on the coarse perforated grinding disc (118) and the fine perforated grinding disc (119) can be fully ground. The graphite on the coarse perforated grinding disc (118) and the fine perforated grinding disc (119) can be fully ground through the telescopic slide groove (112) inside the grinding roller (111) and on the telescopic spring (11 3) under the elastic force of the grinding hammer (114), the graphite is continuously struck by the grinding hammer (114), thereby improving the graphite crushing effect. Since the aperture sizes of the coarse-perforated grinding disc (118) and the fine-perforated grinding disc (119) are different, and the number of teeth of the first bevel gear (116) and the bevel gear ring (117) at the top is less than the number of teeth of the first bevel gear (116) and the bevel gear ring (117) at the bottom, the number of revolutions of the top grinding roller (111) is less than the number of revolutions of the bottom grinding roller (111), thereby achieving rough crushing of the graphite on the coarse-perforated grinding disc (118) and fine crushing of the graphite on the fine-perforated grinding disc (119), and the graphite can be crushed accordingly according to the size of the graphite, thereby improving the graphite crushing effect and accelerating the efficiency of graphite crushing and grinding; Step 3: The main rotating gear (121) is driven to rotate by the vertical rotating rod (108). The meshing connection between the main rotating gear (121), the rotating slave gear (124) and the meshing gear ring (125) is utilized to enable the meshing gear ring (125) to drive the rotating connecting rod (126) and the fine perforated grinding disc (119) to rotate. The fine perforated grinding disc (119) and the grinding roller (111) are rotated relative to each other to achieve the grinding of graphite, thereby improving the efficiency of graphite grinding. When the ground graphite falls into the collection box ( 136), if the graphite reaches the corresponding grinding effect, it can be used directly. When the graphite grinding does not reach the corresponding grinding effect, the lifting motor (129) can be started to drive the lifting threaded rod (130) to rotate, so that the lifting threaded bracket (131) drives the lifting sliding rod (132) and the lifting chassis (133) to descend, and the conical grinding block (135) is moved to the inside of the collection box (136), and the grinding motor (134) is started to drive the conical grinding block (135) to rotate, so as to perform secondary grinding on the graphite and improve the graphite grinding effect.

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