A mill crushing device with split blades

Abstract

The invention discloses a mill crushing device with a split blade, which belongs to the technical field of lithium-ion battery recycling. The mill crushing device with a split blade comprises a shell, a feed port is arranged at the top of the shell, a discharge port is arranged at the bottom of the shell, a support plate is symmetrically installed inside the shell, a guide plate is installed inside the shell, the guide plate is located between the symmetrically arranged support plates and a distance is left between the guide plate and the support plate, a drive assembly is arranged inside the shell between the feed port and the support plate, the drive assembly is connected to a crushing mechanism movably arranged in the shell, the crushing mechanism comprises a first crushing assembly and a second crushing assembly, and has the advantages of double crushing processing, high crushing accuracy, flexible linkage and high working efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of lithium ion battery recycling equipment, and in particular to a mill crushing device with split blades. Background Art

[0002] In the process of recycling lithium-ion batteries, lithium-ion batteries need to be crushed. When crushing lithium-ion batteries, the existing mill crushing device usually cuts and crushes the lithium-ion batteries through a crushing cutter. However, this crushing method easily causes wear to the cutter, reduces the service life of the cutter, and increases the working cost. As can be seen from the above, the existing mill crushing device has the disadvantage of lacking preliminary crushing of lithium-ion batteries and is difficult to be promoted and applied.

[0003] Therefore, it is necessary to provide a mill crushing device with a split blade to solve the above problems. Summary of the invention

[0004] In view of the deficiencies in the prior art, an object of the embodiments of the present invention is to provide a mill crushing device with a split blade to solve the problems in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A grinding crushing device with a split blade comprises a shell, a feed inlet is arranged at the top of the shell, a discharge port is arranged at the bottom of the shell, a support plate is symmetrically installed in the shell, a guide plate is installed in the shell, the guide plate is located between the symmetrically arranged support plates and a distance is left between the guide plate and the support plate, a driving assembly is arranged inside the shell between the feed inlet and the support plate, the driving assembly is connected with a crushing mechanism movably arranged in the shell, the crushing mechanism comprises a first crushing assembly and a second crushing assembly, the driving assembly comprises a rotating disk rotatably arranged in the shell, the rotating disk is connected to an output shaft of a driving motor arranged on the shell, a sliding rod is arranged at the outer end of the rotating disk, a lifting slot plate is slidably arranged on the outer side of the sliding rod, two ends of the lifting slot plate are respectively slidably connected to the vertical rods arranged in the shell, and two ends of the lifting slot plate are movably connected to the movable rods penetrating the shell through hinged rods. The rod is movably connected to the shell, and one end of the movable rod is connected to a side plate, and the side of the side plate close to the movable rod is connected to a connecting rod that penetrates the shell, the connecting rod is movably connected to the shell, and one end of the connecting rod away from the side plate is connected to the first crushing assembly, the first crushing assembly includes a connecting box slidably arranged on the support plate and connected to the connecting rod through an elastic module, the connecting box is symmetrically arranged inside the shell, and a plurality of crushing cones are arranged on the side of the connecting box close to each other, the driving motor drives the rotating disk to rotate, and the rotating disk drives the lifting slot plate to reciprocate and lift along the vertical rod by sliding connection between the sliding rod and the lifting slot plate, and the two ends of the lifting slot plate drive the movable rod to reciprocate in the horizontal direction through the hinged rod, the movable rod drives the connecting rod to move synchronously through the side plate, and the connecting rod drives the symmetrically arranged connecting boxes to approach or move away from each other through the elastic module, and the connecting box impacts and crushes the lithium-ion battery by driving the crushing cones to approach or move away from each other.

[0007] As a further solution of the present invention, the elastic module includes:

[0008] A connecting plate, the connecting plate is movably arranged in the connecting box and connected to the connecting rod, and the connecting plate is symmetrically arranged on one side away from the connecting rod and is equipped with a second wedge block;

[0009] A first wedge block, wherein the first wedge block is symmetrically and movably arranged in the connection box, the inclined surface of the first wedge block is slidably connected to the inclined surface of the corresponding second wedge block, and a first spring is connected between the symmetrically arranged first wedge blocks;

[0010] A slide groove is arranged in the connection box, a slider is slidably arranged in the slide groove, and the slider is connected to the first wedge block.

[0011] As a further solution of the present invention, the connecting plate is movably arranged in the connecting box and connected to the connecting rod, and the connecting plate is symmetrically installed with a second wedge block on one side away from the connecting rod;

[0012] A first wedge block, wherein the first wedge block is symmetrically and movably arranged in the connection box, the inclined surface of the first wedge block is slidably connected to the inclined surface of the corresponding second wedge block, and a first spring is connected between the symmetrically arranged first wedge blocks;

[0013] A slide groove is arranged in the connection box, a slider is slidably arranged in the slide groove, and the slider is connected to the first wedge block.

[0014] As a further solution of the present invention, the screening component comprises:

[0015] The screens are symmetrically arranged inside the housing, and the ends of the screens close to each other are connected to the swing assembly;

[0016] The arc plate is symmetrically arranged in the shell, and a groove is arranged on one side of the arc plate close to the screen to slide in contact with the outer end of the screen.

[0017] As a further solution of the present invention, the swing assembly includes:

[0018] Rods, the rods are symmetrically arranged in the housing, a transmission gear is rotatably arranged on the outer side of the rods, and the outer end of the transmission gear is connected to the screen;

[0019] A rack portion, the rack portion is movably and symmetrically arranged in the housing and meshedly connected with a corresponding transmission gear;

[0020] A placement plate, the placement plate is movably disposed in the housing and is located on a side of the guide plate close to the feed inlet;

[0021] A lifting rod, one end of which is connected to the placement plate, and the other end of which passes through the guide plate and is connected to the rack portion;

[0022] A support block, the support block is installed inside the housing and is slidably connected to the lifting rod, and guide grooves are symmetrically arranged on both sides of the support block through the lifting rod;

[0023] The baffle is movably arranged between the guide plate and the support block and connected to the lifting rod. A guide rod slidably connected to the guide groove is installed on the side of the baffle close to the support block. A second spring is connected between the baffle and the support block.

[0024] As a further solution of the present invention, the second crushing assembly comprises:

[0025] Rotating rods, the rotating rods are symmetrically arranged in the housing, one end of two adjacent rotating rods penetrates the housing and is connected through a transmission unit, a mounting cylinder is sleeved on the outer side of the rotating rod, and the outer side of the mounting cylinder is connected to the circumferentially arranged crushing blade through a connecting unit, and a rotating gear is also installed on the rotating rod;

[0026] A movable rack, one end of which is connected to the side plate, and the other end of which penetrates the housing and is meshed with the rotating gear.

[0027] As a further solution of the present invention, a dust removal component for removing dust inside the shell is also provided on the outside of the shell.

[0028] As a further solution of the present invention, the dust removal assembly includes:

[0029] A dust removal box, the dust removal box is installed on the shell, and the top of the dust removal box is connected to the inside of the shell through a dust suction pipe;

[0030] A filter screen, wherein the filter screen is provided in a plurality and is movably arranged in the dust removal box;

[0031] A movable cover plate, one side of which is connected to the filter screen, the movable cover plate is connected in cooperation with a positioning rod provided on the dust removal box, and a handle is installed at one end of the movable cover plate away from the filter screen;

[0032] The air suction pump is installed on the dust removal box, and the input end of the air suction pump is connected with an end of the dust removal box away from the air suction pipe through the exhaust pipe.

[0033] In summary, compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0034] The present invention drives the rotating disk to rotate by a driving motor, and the rotating disk drives the lifting slot plate to lift and reciprocate along the vertical rod by means of a sliding connection between a sliding rod and a lifting slot plate, and the two ends of the lifting slot plate drive the movable rod to reciprocate in the horizontal direction through a hinged rod, and the movable rod drives the connecting rod to move synchronously through the side plate, and the connecting rod drives the symmetrically arranged connecting boxes to approach or move away from each other through the elastic module, and the connecting box impacts and crushes the lithium-ion battery by driving the crushing cones to approach or move away from each other, and the lithium-ion battery after the initial crushing can be subjected to a secondary crushing treatment through the second crushing assembly, thereby improving the crushing accuracy of the lithium-ion battery, and at the same time, the driving assembly is respectively connected to the first crushing assembly and the second crushing assembly, thereby realizing the flexible linkage of the first crushing assembly and the second crushing assembly, reducing energy loss, and having the effects of double crushing treatment, high crushing accuracy, flexible linkage and high working efficiency.

[0035] In order to more clearly illustrate the structural features and effects of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a structural schematic diagram of an embodiment of the invention.

[0037] Figure 2 For the embodiment of the invention Figure 1 A partial enlarged view of middle A.

[0038] Figure 3 For the embodiment of the invention Figure 1 A partial enlarged view of B.

[0039] Figure 4 For the embodiment of the invention Figure 1 A partial enlarged view of C in the middle.

[0040] Figure 5 It is a schematic diagram of the structure of the lifting rod in the embodiment of the invention.

[0041] Figure numerals: 1-housing, 101-feeding port, 102-discharging port, 103-supporting plate, 2-driving assembly, 201-driving motor, 202-rotating disk, 203-sliding rod, 204-lifting slot plate, 205-vertical rod, 206-hinge rod, 207-movable rod, 208-side plate, 209-connecting rod, 3-first crushing assembly, 301-connecting box, 302-crushing cone, 303-connecting plate, 304-sliding groove, 305-sliding block, 306-first wedge block, 307-first spring, 308-second wedge plate, 309-sliding plate, 4-guide plate, 5-screening assembly, 501-screen, 502-arc plate, 6-swinging assembly , 601-placing plate, 602-lifting rod, 603-baffle, 604-support block, 605-second spring, 606-guide rod, 607-rack part, 608-transmission gear, 609-rod, 7-second crushing assembly, 701-moving rack, 702-rotating gear, 703-rotating rod, 704-mounting cylinder, 705-crushing blade, 8-connecting unit, 801-threaded through hole, 802-threaded blind hole, 803-positioning screw, 9-dust removal assembly, 901-suction pipe, 902-dust removal box, 903-movable cover, 904-filter, 905-handle, 906-positioning rod, 907-suction pump, 908-exhaust pipe. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0043] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0044] In one embodiment of the present invention, see Figure 1 and Figure 2The mill crushing device with split blades comprises a shell 1, a feed port 101 is arranged at the top of the shell 1, a discharge port 102 is arranged at the bottom of the shell 1, a support plate 103 is symmetrically installed inside the shell 1, a guide plate 4 is installed inside the shell 1, the guide plate 4 is located between the symmetrically arranged support plates 103 and a distance is left between the guide plate 4 and the support plates 103, a driving component 2 is arranged inside the shell 1 between the feed port 101 and the support plates 103, the driving component 2 is connected to a crushing mechanism movably arranged in the shell 1, the crushing mechanism comprises a first crushing component 3 and a second crushing component 7, the driving component 2 comprises a rotating disk 202 rotatably arranged in the shell 1, the rotating disk 202 is connected to the output shaft of a driving motor 201 arranged on the shell 1, a sliding rod 203 is installed at the outer end of the rotating disk 202, and the sliding rod 203 A lifting slot plate 204 is slidingly arranged on the outer side, and the two ends of the lifting slot plate 204 are respectively slidably connected to the vertical rod 205 arranged in the outer shell 1, and the two ends of the lifting slot plate 204 are respectively movably connected to the movable rod 207 penetrating the outer shell 1 through the hinge rod 206, and the movable rod 207 is movably connected to the outer shell 1. The end of the movable rod 207 away from the hinge rod 206 is connected with a side plate 208, and the side of the side plate 208 close to the movable rod 207 is connected with a connecting rod 209 penetrating the outer shell 1, and the connecting rod 209 is movably connected to the outer shell 1. The end of the connecting rod 209 away from the side plate 208 is connected to the first crushing assembly. The first crushing assembly 3 includes a connecting box 301 which is slidably arranged on the support plate 103 and connected to the connecting rod 209 through an elastic module. The connecting box 301 is symmetrically arranged inside the outer shell 1, and a plurality of crushing cones 302 are arranged on the side of the connecting box 301 close to each other.

[0045] In this embodiment, the driving motor 201 drives the rotating disk 202 to rotate, and the rotating disk 202 drives the lifting slot plate 204 to lift and reciprocate along the vertical rod 205 through the sliding connection between the sliding rod 203 and the lifting slot plate 204. The two ends of the lifting slot plate 204 drive the movable rod 207 to reciprocate in the horizontal direction through the hinge rod 206. The movable rod 207 drives the connecting rod 209 to move synchronously through the side plate 208. The connecting rod 209 drives the symmetrically arranged connecting boxes 301 to move closer to or away from each other through the elastic module. The connecting box 301 impacts and crushes the lithium-ion battery by driving the crushing cone 302 to move closer to or away from each other, wherein the two ends of the guide plate 4 are inclined downward.

[0046] In one embodiment of the present invention, see Figure 1 and Figure 3The elastic module includes a connecting plate 303, which is movably arranged in the connecting box 301 and connected to the connecting rod 209. The connecting plate 303 is symmetrical on the side away from the connecting rod 209 and is installed with a second wedge block 308; a first wedge block 306, which is symmetrically and movably arranged in the connecting box 301, and the inclined surface of the first wedge block 306 is slidably connected to the inclined surface of the corresponding second wedge block 308, and a first spring 307 is connected between the symmetrically arranged first wedge blocks 306; a slide groove 304, which is arranged in the connecting box 301, and a slider 305 is slidably arranged in the slide groove 304, and the slider 305 is connected to the first wedge block 306.

[0047] In this embodiment, at the initial position, the first spring 307 is at its original length and the symmetrically arranged first wedge blocks 308 are far away from each other. When the connecting rod 209 drives the connecting box 301 to move closer to each other through the elastic module, the connecting box 301 drives the crushing cone 302 to move closer to each other, so that the lithium-ion battery can be impacted and crushed. When the crushing cone 302 contacts the surface of the lithium-ion battery, the connecting rod 209 continues to move closer to the lithium-ion battery, and the connecting rod 209 drives the second wedge block 308 to move through the connecting plate 303. The second wedge block 308 is moved by The symmetrically arranged first wedge blocks 306 are driven to approach each other by sliding connection with the first wedge blocks 306, and the first spring 307 is forced to shrink. When the second wedge blocks 308 come into contact with the connecting box 301, the continued movement of the connecting rod 209 will drive the symmetrically arranged crushing cones 302 to approach each other again through the connecting plate 303, the second wedge blocks 308 and the connecting box 301, thereby performing a secondary impact and crushing on the lithium-ion battery. Through the elastic module, the lithium-ion battery can be impacted for the second time, thereby improving the crushing efficiency of the lithium-ion battery.

[0048] In one embodiment of the present invention, see Figure 1 A screening component 5 is also provided in the housing 1 , and the screening component 5 is located between the support plate 103 and the discharge port 102 .

[0049] The screening component 5 includes a screen 501, which is symmetrically arranged inside the shell 1, and the ends of the screens 501 that are close to each other are connected to the swing component; an arc plate 502, which is symmetrically arranged inside the shell 1, and the side of the arc plate 502 close to the screen 501 is provided with a groove that is in sliding contact with the outer end of the screen 501.

[0050] In this embodiment, the crushed lithium-ion batteries can be screened through the screen 501, and the arc plate 502 can prevent the incompletely crushed lithium-ion batteries from entering the next step and reducing the work efficiency. For the incompletely crushed lithium-ion batteries, the staff can take out the lithium-ion batteries above the screen 501 from the movable door (not shown in the figure) movably arranged on the back of the shell 1, and put them into the shell 1 again through the feed port 101 for secondary crushing.

[0051] In one embodiment of the present invention, see Figure 1 and Figure 5 The swing assembly 6 includes a rod 609, which is symmetrically arranged in the housing 1, and a transmission gear 608 is rotatably arranged on the outer side of the rod 609, and the outer end of the transmission gear 608 is connected to the screen 501; a rack portion 607, which is movable and symmetrically arranged in the housing 1 and meshed with the corresponding transmission gear 608; a placement plate 601, which is movably arranged in the housing 1 and is located on a side of the guide plate 4 close to the feed port 101; a lifting rod 602, one end of which is connected to the placement plate 601, and the lifting rod 60 2, the other end of which penetrates the guide plate 4 and is connected to the rack portion 607; a support block 604, which is installed inside the housing 1 and is slidably connected to the lifting rod 602, and both sides of the support block 604 penetrate the lifting rod 602 and are symmetrically provided with guide grooves; a baffle 603, which is movably arranged between the guide plate 4 and the support block 604 and is connected to the lifting rod 602, and a guide rod 606 slidably connected to the guide groove is installed on one side of the baffle 603 close to the support block 604, and a second spring 605 is connected between the baffle 603 and the support block 604.

[0052] In this embodiment, when a lithium-ion battery is put into the housing 1, the lithium-ion battery will fall onto the placement plate 601 and wait for crushing. The fallen lithium-ion battery will press down the placement plate 601, and the placement plate 601 will move downward and drive the lifting rod 602 to move downward. The lifting rod 602 drives the screen 501 to rotate upward by meshing with the transmission gear 608 through the rack part 607, which can drive the lithium-ion batteries above the screen 501 to move, thereby accelerating the filtering of the lithium-ion batteries.

[0053] During the rotation of the screen 501, the arc plate 502 can prevent the lithium-ion batteries from falling from the gap between the screen 501 and the shell 1, thereby improving the accuracy of lithium-ion battery screening. At the same time, the lifting rod 602 drives the guide rod 606 to slide in the guide groove through the baffle 603, and the second spring 605 is stressed and contracts. When the lithium-ion batteries on the placement plate 601 are crushed, the crushed lithium-ion batteries will move to the outside of the placement plate 601, and the second spring 605 will extend and drive the lifting rod 602 to move upward through the baffle 603. The lifting rod 602 drives the placement plate 601 to return to its original position and the lifting rod 602 drives the screen 501 to rotate downward through the meshing connection between the rack part 607 and the transmission gear 608, which is convenient for the reciprocating shaking of the screen 501. The screen 501 is driven to rotate back and forth by the gravity of the lithium-ion batteries and the cooperation between the second spring 605, thereby accelerating the screening efficiency of the lithium-ion batteries and reducing energy loss.

[0054] In one embodiment of the present invention, see Figure 1 and Figure 4 The second crushing assembly 7 includes a rotating rod 703, which is symmetrically arranged in the outer shell 1. One end of two adjacent rotating rods 703 passes through the outer shell 1 and is connected through a transmission unit. A mounting cylinder 704 is sleeved on the outer side of the rotating rod 703. The outer side of the mounting cylinder 704 is connected to a circumferentially arranged crushing blade 705 through a connecting unit 8. A rotating gear 702 is also installed on the rotating rod 703; a moving rack 701, one end of which is connected to the side plate 208, and the other end of which passes through the outer shell 1 and is meshed with the rotating gear 702.

[0055] In this embodiment, the driving motor 201 works and drives the side plate 208 to approach or move away from the housing 1, and the side plate 208 drives the moving rack 701 to move synchronously. The moving rack 701 drives the rotating rod 703 to rotate back and forth by meshing with the rotating gear 702. The rotating rod 703 drives the crushing blade 705 to rotate back and forth through the mounting cylinder 704 and the connecting unit, thereby rotating, cutting and crushing the crushed lithium-ion battery, thereby improving the crushing accuracy of the lithium-ion battery. The connecting unit 5 includes a threaded blind hole 802 circumferentially arranged on the mounting cylinder 704 and a threaded through hole 801 arranged at both ends of the crushing blade 705. A positioning screw 803 is threadedly connected between the threaded through hole 801 and the threaded blind hole 802. Through the connecting unit 8, it is convenient to replace the worn crushing blade 705 separately, avoiding the waste of replacing the entire blade and saving costs. The transmission unit is a mutually meshing gear arranged on two adjacent rotating rods 703.

[0056] In one embodiment of the present invention, see Figure 1A dust removal component 9 for removing dust inside the shell 1 is also provided on the outside of the shell 1.

[0057] The dust removal assembly 9 includes a dust removal box 902, which is installed on the outer shell 1, and the top of the dust removal box 902 is connected to the inside of the outer shell 1 through a dust suction pipe 901; a filter screen 904, which is provided with a plurality of filters 904 and is movably arranged in the dust removal box 902; a movable cover plate 903, one side of the movable cover plate 903 is connected to the filter screen 904, the movable cover plate 903 is cooperatively connected with a positioning rod 906 arranged on the dust removal box 902, and a handle 905 is installed at one end of the movable cover plate 903 away from the filter screen 904; an air suction pump 907, which is installed on the dust removal box 902, and the input end of the air suction pump 907 is connected to one end of the dust removal box 902 away from the air suction pipe 901 through an exhaust pipe 908.

[0058] In this embodiment, the suction pump 907 discharges the air in the dust removal box 902 through the exhaust pipe 908, the air pressure in the dust removal box 902 is reduced, and the dust-containing air inside the shell 1 can be sucked into the dust removal box 902 through the dust suction pipe 901. Through the provision of several filter nets 904, the dust in the sucked air can be filtered and purified multiple times. The staff regularly removes the movable cover 903 through the handle 905 to realize the extraction of the filter net 904, which is convenient for cleaning and replacement of the filter net 904.

[0059] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A mill crushing device with a split blade, comprising a housing, a feed inlet is arranged at the top of the housing, and a discharge outlet is arranged at the bottom of the housing, characterized in that: The shell is symmetrical and equipped with a support plate, and a guide plate is installed in the shell, the guide plate is located between the symmetrically arranged support plates and a distance is left between the guide plate and the support plate, a driving assembly is arranged inside the shell between the feed port and the support plate, the driving assembly is connected with a crushing mechanism movably arranged in the shell, the crushing mechanism includes a first crushing assembly and a second crushing assembly, the driving assembly includes a rotating disk rotatably arranged in the shell, the rotating disk is connected to an output shaft of a driving motor arranged on the shell, a sliding rod is installed at the outer end of the rotating disk, a lifting slot plate is slidably arranged on the outer side of the sliding rod, both ends of the lifting slot plate are respectively slidably connected to the vertical rods arranged in the shell, and both ends of the lifting slot plate are movably connected to the movable rods penetrating the shell through hinged rods, the movable rods are movably connected to the shell, and the movable rods are connected to the shell at one end away from the hinged rod. A side plate is connected, and a connecting rod penetrating the shell is connected to a side of the side plate close to the movable rod, the connecting rod is movably connected to the shell, and an end of the connecting rod away from the side plate is connected to the first crushing assembly, the first crushing assembly includes a connecting box slidably arranged on the support plate and connected to the connecting rod through an elastic module, the connecting box is symmetrically arranged inside the shell, and a plurality of crushing cones are arranged on the side of the connecting box close to each other, the driving motor drives the rotating disk to rotate, and the rotating disk drives the lifting slot plate to reciprocate and lift along the vertical rod by means of a sliding connection between the sliding rod and the lifting slot plate, and the two ends of the lifting slot plate drive the movable rod to reciprocate in the horizontal direction through the hinged rod, and the movable rod drives the connecting rod to move synchronously through the side plate, and the connecting rod drives the symmetrically arranged connecting boxes to approach or move away from each other through the elastic module, and the connecting box impacts and crushes the lithium-ion battery by driving the crushing cones to approach or move away from each other; The elastic module includes: a connecting plate, which is movably arranged in a connecting box and connected to a connecting rod, and a second wedge block is symmetrically installed on a side of the connecting plate away from the connecting rod; a first wedge block, which is symmetrically and movably arranged in the connecting box, and a slant surface of the first wedge block is slidably connected to a corresponding slant surface of a second wedge block, and a first spring is connected between the symmetrically arranged first wedge blocks; a slide groove, which is arranged in the connecting box, and a slider is slidably arranged in the slide groove, and the slider is connected to the first wedge block.

2. The mill crushing device with split blades according to claim 1, characterized in that: A screening component is also arranged in the shell, and the screening component is located between the support plate and the discharge port.

3. The mill crushing device with split blades according to claim 2, characterized in that: The screening component comprises: The screens are symmetrically arranged inside the housing, and the ends of the screens close to each other are connected to the swing assembly; The arc plate is symmetrically arranged in the shell, and a groove which is in sliding contact with the outer end of the screen is arranged on one side of the arc plate close to the screen.

4. The mill crushing device with split blades according to claim 3, characterized in that: The swing assembly comprises: Rods, the rods are symmetrically arranged in the housing, a transmission gear is rotatably arranged on the outer side of the rods, and the outer end of the transmission gear is connected to the screen; A rack portion, the rack portion is movably and symmetrically arranged in the housing and meshedly connected with a corresponding transmission gear; A placement plate, the placement plate is movably disposed in the housing and is located on a side of the guide plate close to the feed inlet; A lifting rod, one end of which is connected to the placement plate, and the other end of which passes through the guide plate and is connected to the rack portion; A support block, which is installed inside the housing and is slidably connected to the lifting rod, and two sides of the support block penetrate the lifting rod and are symmetrically provided with guide grooves; The baffle is movably arranged between the guide plate and the support block and connected to the lifting rod. A guide rod slidably connected to the guide groove is installed on the side of the baffle close to the support block. A second spring is connected between the baffle and the support block.

5. The mill crushing device with split blades according to claim 1, characterized in that: The second crushing assembly comprises: Rotating rods, the rotating rods are symmetrically arranged in the housing, one end of two adjacent rotating rods penetrates the housing and is connected through a transmission unit, a mounting cylinder is sleeved on the outer side of the rotating rod, and the outer side of the mounting cylinder is connected to the circumferentially arranged crushing blade through a connecting unit, and a rotating gear is also installed on the rotating rod; A movable rack, one end of which is connected to the side plate, and the other end of which penetrates the housing and is meshed with the rotating gear.

6. The mill crushing device with split blades according to claim 1, characterized in that: A dust removal component for removing dust inside the shell is also arranged on the outer side of the shell.

7. The mill crushing device with split blades according to claim 6, characterized in that: The dust removal component comprises: A dust removal box, the dust removal box is installed on the shell, and the top of the dust removal box is connected to the inside of the shell through a dust suction pipe; A filter screen, wherein the filter screen is provided in a plurality and is movably arranged in the dust removal box; A movable cover plate, one side of which is connected to the filter screen, the movable cover plate is connected in cooperation with a positioning rod provided on the dust removal box, and a handle is installed at one end of the movable cover plate away from the filter screen; The air suction pump is installed on the dust removal box, and the input end of the air suction pump is connected with an end of the dust removal box away from the air suction pipe through the exhaust pipe.

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