CN219129501U

CN219129501U - Automatic efficient rubber crusher

Info

Publication number: CN219129501U
Application number: CN202320079813.9U
Authority: CN
Inventors: 陈永虎; 魏华
Original assignee: Yichang Dupang Renewable Resources Co ltd
Current assignee: Hubei Yuanhuan Industrial Investment Co ltd
Priority date: 2023-01-10
Filing date: 2023-01-10
Publication date: 2023-06-06
Anticipated expiration: 2033-01-10

Abstract

The utility model provides an automatic and efficient rubber crusher, which comprises: the shell is internally provided with a first-stage crushing mechanism, a second-stage crushing mechanism and a screening mechanism in sequence along the material flow direction, the upper end of the shell is provided with a first feed inlet, and the lower end of the shell is provided with a first discharge outlet; a second feeding port and a second discharging port are sequentially arranged on one side wall of the shell along the material flowing direction, the second feeding port is positioned between the first-stage crushing mechanism and the second-stage crushing mechanism, and the second discharging port is communicated with a coarse material outlet of the screening mechanism; the automatic feeding mechanism is used for sending the coarse materials screened by the screening mechanism into the secondary crushing mechanism again for crushing; the first connecting mechanism is used for synchronously starting the first-stage crushing mechanism and the automatic feeding mechanism. The utility model provides an automatic and efficient rubber crusher, which can automatically and repeatedly crush rubber blocks with unqualified sizes, and saves manpower.

Description

Automatic efficient rubber crusher

Technical Field

The utility model relates to the technical field of rubber recovery processing, in particular to an automatic and efficient rubber crusher.

Background

The rubber crusher is equipment which is used when rubber tires are recycled, and can cut and crush the rubber tires so as to facilitate subsequent granulation. Most of the existing rubber crusher is used for crushing operation by arranging a crushing roller which rotates at a high speed, but rubber tires can become small particles after being crushed, the rubber tires are driven by the crushing roller which rotates at a high speed, the rubber tires are splashed and impact the inner wall of the rubber crusher to cause damage, and part of rubber blocks with larger volume are also generated after crushing, and the rubber blocks do not reach the required crushing grade and need to be subjected to secondary crushing after being screened independently.

In order to solve the technical problems, china patent (patent publication No. CN 204955203U) discloses a waste rubber crusher, which is provided with a machine case, a spiral roll shaft, two roll shafts with steel thorns, a counterattack plate, a filter plate and a coarse material discharge port, wherein when the waste rubber crusher is used, rubber is led into the machine case through the spiral roll shaft to be connected with the two roll shafts, the roll shafts are matched to rotate to crush and cut, the splashed rubber is blocked by the counterattack plate when being crushed, damage to the inner wall of the machine case is avoided, then the rubber falls onto the filter plate, the rubber with qualified size is ground at the next part after being leaked out through the filter plate, and rubber blocks with larger size and incapable of being discharged through the filter plate are singly discharged through the coarse material discharge port, so that secondary crushing treatment is carried out.

Although the rubber splashes in the existing rubber crusher equipment and can damage the machine case and the problems that unqualified rubber needs to be screened independently are solved, the device screens rubber blocks with different sizes through the filter plates, unqualified rubber with larger sizes is piled up on the filter plates, workers need to manually take out the rubber blocks, and then manually put into the device for secondary crushing, so that the labor intensity of the workers is greatly increased, and the rubber crusher is inconvenient to use.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model provides an automatic and efficient rubber crusher, which can automatically and repeatedly crush unqualified rubber blocks and saves manpower.

According to an embodiment of the present utility model, an automatic efficient rubber crusher includes: the shell is internally provided with a first-stage crushing mechanism, a second-stage crushing mechanism and a screening mechanism in sequence along the material flow direction, the upper end of the shell is provided with a first feed inlet, and the lower end of the shell is provided with a first discharge outlet; a second feeding port and a second discharging port are sequentially arranged on one side wall of the shell along the material flowing direction, the second feeding port is positioned between the first-stage crushing mechanism and the second-stage crushing mechanism, and the second discharging port is communicated with a coarse material outlet of the screening mechanism; the automatic feeding mechanism is arranged between the second feeding hole and the second discharging hole and is communicated with the second feeding hole and the second discharging hole, and is used for guiding the coarse materials in the second discharging hole into the second feeding hole; the first connecting mechanism is arranged on the shell and is connected with the first-stage crushing mechanism and the automatic feeding mechanism and used for synchronously starting the first-stage crushing mechanism and the automatic feeding mechanism.

The technical principle of the utility model is as follows: the rubber is cut and crushed by the first-stage crushing mechanism and the second-stage crushing mechanism in sequence, then partial rubber with unqualified size is screened out by the screening mechanism, the partial rubber enters the automatic feeding mechanism through the second discharge hole, the automatic feeding mechanism can transfer the rubber to the second feed hole, the rubber enters the shell and then contacts with the second-stage crushing mechanism, secondary crushing is carried out, and repeated cutting and crushing are carried out, so that the size of the finally discharged rubber is qualified.

Preferably, the automatic feeding mechanism comprises a feeding cylinder fixedly connected with the shell, a driving rod rotatably arranged in the feeding cylinder along the material flow direction and a spiral guide plate fixedly connected with the driving rod, and openings are formed in positions, corresponding to the second feeding port and the second discharging port, of the feeding cylinder; the upper end and the lower end of the spiral guide plate are arranged in one-to-one correspondence with the second discharge port and the second feed port; one end of the driving rod penetrates out of the feeding cylinder and then is connected with the first connecting mechanism.

By adopting the technical scheme, the spiral guide plate rotates, and the rubber at the second feed inlet can be automatically transferred to the second discharge outlet, so that the rubber enters the shell again and then is connected with the secondary crushing mechanism.

Preferably, the upper end of the shell is fixedly provided with a first-stage crushing box, and the first feed inlet is formed in the first-stage crushing box; the first-stage crushing mechanism comprises a threaded rod, a sliding block and a plurality of cutting knives, wherein the threaded rod is arranged at the bottom of the first-stage crushing box in a manner of rotating along a direction perpendicular to the material flowing direction, the sliding block is in threaded connection with the threaded rod, the cutting knives are uniformly arranged on the sliding block at intervals, one end of the threaded rod penetrates out of the first-stage crushing box and then is connected with the first connecting mechanism, and the first connecting mechanism is used for driving the threaded rod to intermittently and alternately rotate along the forward direction or the reverse direction; a plurality of first blanking holes communicated with the inside of the shell are formed in the inner wall of the bottom of the first-stage crushing box along the moving direction of the sliding block.

Through adopting above-mentioned technical scheme, the cutting knife slides reciprocally in the broken incasement of one-level, can cut into the rubber piece that the size is suitable in advance with rubber, and the secondary crushing mechanism of being convenient for does further broken cutting, obtains the rubber that the size is qualified.

Preferably, the first connecting mechanism comprises a first motor coaxially connected with the driving rod, a complete bevel gear coaxially connected with the driving rod and two incomplete bevel gears coaxially connected with the threaded rod, wherein the first motor is fixedly arranged on the first-stage crushing box, and toothed parts of the two incomplete bevel gears are staggered and alternately meshed with the complete bevel gears.

Through adopting above-mentioned technical scheme, can change the continuous unidirectional rotation of actuating lever into the intermittent type reciprocal rotation of threaded rod, and then drive the cutting knife and do reciprocal slip, be convenient for cut.

Preferably, the secondary crushing mechanism comprises a first crushing roller and a second crushing roller which are arranged in the shell in a rotating manner along the direction perpendicular to the material flowing direction, a second connecting mechanism is arranged between the first crushing roller and the second crushing roller, and the second connecting mechanism is used for driving the first crushing roller and the second crushing roller to synchronously rotate.

Through adopting above-mentioned technical scheme, two crushing rollers synchronous rotation can further cut rubber and be the rubber piece of size smaller for reaching qualified size.

Preferably, the second connecting mechanism comprises a second motor fixedly connected with the shell, a driving gear driven by the second motor to rotate and a driven gear coaxially connected with the first crushing roller, wherein the driving gear is coaxially connected with the second crushing roller, and the driving gear is meshed with the driven gear.

Through adopting above-mentioned technical scheme, the second motor drives driving gear meshing driven gear and rotates, can make first crushing roller and the synchronous rotation of second crushing roller, does secondary crushing processing.

Preferably, the screening mechanism is a screening plate obliquely arranged in the shell, the inclined low end of the screening plate is connected with the second discharge port, and a plurality of second discharging holes for materials to flow out are formed in the screening plate.

Through adopting above-mentioned technical scheme, the screening board can export the shell with the rubber that the size is qualified, and unqualified rubber is then by the leading-in material cylinder of slope setting screening board simultaneously, carries out automatic secondary crushing.

Compared with the prior art, the utility model has the following beneficial effects:

1. set up one-level broken mechanism and two-stage broken mechanism, can carry out twice cutting in succession to the rubber in the shell and break, improve effect and the speed of whole cutting, be equipped with automatic feeding mechanism and screening mechanism simultaneously, screening mechanism can separate out the unqualified rubber after the secondary breakage, then carry out automatic returning charge by automatic feeding mechanism, make the rubber meet with two-stage broken mechanism once more, do further cutting, so repeated automatic feeding and cutting, avoided the manual material of workman, the material loading, greatly reduced workman's intensity of labour.

Drawings

FIG. 1 is a schematic view of the internal structure of the present utility model;

FIG. 2 is a schematic view of a part of the structure of the present utility model;

FIG. 3 is a second partial schematic view of the present utility model.

In the above figures: 1 shell, 2 first feed inlet, 3 first discharge gate, 4 second feed inlet, 5 second discharge gate, 6 feed cylinder, 7 actuating lever, 8 spiral stock guide, 9 first order crushing casees, 10 threaded rod, 11 sliders, 12 cutting knives, 13 first motor, 14 complete bevel gear, 15 incomplete bevel gear, 16 first crushing roller, 17 second crushing roller, 18 second motor, 19 driving gear, 20 driven gear, 21 screening board.

Detailed Description

The technical scheme of the utility model is further described below with reference to the accompanying drawings and examples.

As shown in fig. 1, an embodiment of the present utility model provides an automatic and efficient rubber crusher, including: the shell 1, wherein a first-stage crushing mechanism, a second-stage crushing mechanism and a screening mechanism are sequentially arranged in the shell 1 along the material flow direction, a first feed inlet 2 is arranged at the upper end of the shell 1, and a first discharge outlet 3 is arranged at the lower end of the shell 1; a second feed inlet 4 and a second discharge outlet 5 are sequentially arranged on one side wall of the shell 1 along the material flow direction, the second feed inlet 4 is positioned between the first-stage crushing mechanism and the second-stage crushing mechanism, and the second discharge outlet 5 is communicated with a coarse material outlet of the screening mechanism; the automatic feeding mechanism is arranged between the second feeding hole 4 and the second discharging hole 5 and is communicated with both the second feeding hole 4 and the second discharging hole 5, and is used for guiding the coarse materials in the second discharging hole 5 into the second feeding hole 4; the first connecting mechanism is arranged on the shell 1 and is connected with the primary crushing mechanism and the automatic feeding mechanism and used for synchronously starting the primary crushing mechanism and the automatic feeding mechanism.

The detailed working procedure of this embodiment is: rubber is led into the shell 1 from the first feed inlet 2, the rubber is firstly connected with a first-stage crushing mechanism, the first-stage crushing mechanism can cut large rubber blocks into small blocks which are convenient to crush in advance, then the second-stage crushing mechanism further cuts and crushes the rubber to reach the qualified size, and the rubber flows out of the shell 1 from the first discharge outlet 3 after passing through a screening mechanism; in the process, if the rubber which is still large in size and unqualified after twice cutting is arranged, the rubber enters the automatic feeding mechanism through the second discharge hole 5 above the screening mechanism, the automatic feeding mechanism can transfer the rubber to the second discharge hole 5 and is repeatedly contacted with the secondary crushing mechanism for the second time until the rubber is cut into rubber blocks with qualified sizes, and the trouble of manually taking and placing the rubber is eliminated.

As shown in fig. 1, according to another embodiment of the present utility model, an automatic and efficient rubber crusher, wherein an automatic feeding mechanism comprises a feeding cylinder 6 fixedly connected with a housing 1, a driving rod 7 rotatably arranged in the feeding cylinder 6 along a material flow direction, and a spiral guide plate 8 fixedly connected with the driving rod 7, wherein the feeding cylinder 6 is provided with openings at positions corresponding to a second feeding hole 4 and a second discharging hole 5; the upper end and the lower end of the spiral guide plate 8 are arranged in one-to-one correspondence with the second discharge hole 5 and the second feed hole 4; one end of the driving rod 7 penetrates out of the feeding barrel 6 and then is connected with the first connecting mechanism.

The detailed working procedure of this embodiment is: after two times of cutting, the rubber block with larger size can be blocked by the screening mechanism and then flows into the feeding barrel 6, at the moment, the driving rod 7 drives the spiral guide plate 8 to rotate, rubber can be driven to move upwards by the spiral guide plate 8 after being connected with the lower end of the spiral guide plate 8 until reaching the position of the second discharge hole 5, and the rubber block enters the shell 1 again through the second discharge hole 5 to be connected with the secondary crushing mechanism, so that the process is repeated, and as long as the rubber residue with larger size and incapable of passing through the screening mechanism is obtained, the spiral guide plate 8 can be automatically returned to perform repeated cutting for multiple times, thereby not only meeting the requirement on rubber cutting, but also avoiding the labor of workers for manually taking and feeding materials.

As shown in fig. 1 and 2, according to another embodiment of the present utility model, an automatic efficient rubber crusher, wherein a primary crushing box 9 is fixedly provided at an upper end of a housing 1, and a first feed inlet 2 is provided on the primary crushing box 9; the first-stage crushing mechanism comprises a threaded rod 10 which is arranged at the bottom of the first-stage crushing box 9 in a manner of rotating along a direction perpendicular to the material flow direction, a sliding block 11 which is in threaded connection with the threaded rod 10, and a plurality of cutting knives 12 which are uniformly arranged on the sliding block 11 at intervals, wherein one end of the threaded rod 10 penetrates out of the first-stage crushing box 9 and then is connected with a first connecting mechanism, and the first connecting mechanism is used for driving the threaded rod 10 to intermittently and alternately rotate along the forward direction or the reverse direction; a plurality of first blanking holes communicated with the inside of the shell 1 are formed in the inner wall of the bottom of the first-stage crushing box 9 along the moving direction of the sliding block 11.

The detailed working procedure of this embodiment is: in this embodiment, in order to strengthen the first cutting effect to rubber, conveniently discharge rubber from the broken case 9 of one-level, can set up cutting knife 12 and be reciprocating linear motion in the broken case 9 of one-level, specifically, can all set up a spacing groove along the direction of movement of slider 11 on the inner wall of the two opposite sides of the broken case 9 of one-level, the both ends one-to-one of slider 11 keeps sliding connection with these two spacing grooves, then threaded rod 10 rotates under first coupling mechanism's effect, will drive slider 11 and do linear slip in the broken case 9 of one-level, simultaneously, a plurality of cutting knives 12 that set up side by side carry out even cutting with the rubber in the broken case 9 of one-level, divide into suitable size, can be convenient for follow-up second grade broken mechanism and do the high-efficient broken ejection of compact of uniform in size through first unloading hole size. In addition, the distance between two adjacent cutting knives 12 on the sliding block 11 can be smaller than the size of the first blanking hole, so that the cut rubber block can be rapidly blanked through the first blanking hole.

As shown in fig. 1 and 2, according to another embodiment of the present utility model, an automatic efficient rubber crusher, wherein a first connection mechanism comprises a first motor 13 coaxially connected with a driving rod 7, a full bevel gear 14 coaxially connected with the driving rod 7, and two partial bevel gears 15 coaxially connected with a threaded rod 10, the first motor 13 is fixedly installed on a primary crushing box 9, and toothed portions of the two partial bevel gears 15 are staggered from each other and alternately engaged with the full bevel gear 14.

The detailed working procedure of this embodiment is: when the first motor 13 is started, the driving rod 7 is driven to rotate, so that the spiral guide plate 8 fixedly connected with the driving rod 7 can rotate to transfer rubber, meanwhile, the driving rod 7 can drive the complete bevel gear 14 which is coaxially and fixedly connected with the driving rod 7 to rotate, the complete bevel gear 14 rotates to be meshed with the two incomplete bevel gears 15 which are symmetrically arranged left and right, at the moment, as the teeth on the incomplete bevel gears 15 are only half of the teeth, the continuous rotation of the complete bevel gears 14 can be converted into intermittent alternating different-direction rotation of the two incomplete bevel gears 15 by arranging the opening directions of the teeth on the two incomplete bevel gears 15, and then the threaded rod 10 is driven to automatically and alternately rotate forward or reversely, so that the cutter 12 is driven to perform reciprocating linear sliding.

As shown in fig. 1, 2 and 3, according to another embodiment of the present utility model, an automatic efficient rubber crusher, wherein the secondary crushing mechanism comprises a first crushing roller 16 and a second crushing roller 17 rotatably provided in a housing 1 in a direction perpendicular to a material flow direction, and a second connecting mechanism is provided between the first crushing roller 16 and the second crushing roller 17 for driving the first crushing roller 16 and the second crushing roller 17 to rotate synchronously.

The detailed working procedure of this embodiment is: the first crushing roller and the second crushing roller 17 are arranged in the same height position in the shell 1 side by side, the first crushing roller 16 and the second crushing roller 17 can be driven to synchronously rotate in opposite directions through the second connecting mechanism, and further fine cutting is carried out on rubber blocks flowing out from the first-stage crushing box 9, so that the qualified size is achieved.

As shown in fig. 1, 2 and 3, according to another embodiment of the present utility model, an automatic efficient rubber crusher, wherein the second connection mechanism includes a second motor 18 fixedly connected with the housing 1, a driving gear 19 driven to rotate by the second motor 18, and a driven gear 20 coaxially connected with the first crushing roller 16, the driving gear 19 is coaxially connected with the second crushing roller 17, and the driving gear 19 is engaged with the driven gear 20.

The detailed working procedure of this embodiment is: the second motor 18 is started to drive the driving gear 19 and the second crushing roller 17 to rotate together, and the driving gear 19 further drives the driven gear 20 meshed with the driving gear to rotate, so that the first crushing roller 16 can be synchronously driven to rotate in opposite directions, and finer cutting is performed through rubber between the two crushing rollers.

As shown in fig. 1, 2 and 3, according to another embodiment of the present utility model, an automatic efficient rubber crusher is provided, wherein the screening mechanism is a screening plate 21 obliquely arranged in a housing 1, the inclined lower end of the screening plate 21 is connected with a second discharge port 5, and a plurality of second discharging holes for discharging materials are formed in the screening plate 21.

The detailed working procedure of this embodiment is: rubber after twice cutting falls onto the screening plate 21, at this time, rubber blocks with qualified sizes enter the bottom of the shell 1 through screening holes in the screening plate 21 and are discharged from the first discharge hole 3, unqualified rubber with larger sizes is blocked on the screening plate 21, the rubber blocks slide on the obliquely arranged screening plate 21 and then are connected with the spiral guide plate 8 through the second feed inlet 4, and the spiral guide plate 8 guides the rubber blocks to the positions above the first crushing roller 16 and the second crushing roller 17, so that repeated crushing and cutting are performed until the rubber blocks are qualified. In this embodiment, in order to prevent the rubber block from blocking the screening hole, a rotary connection between the screening plate 21 and the inner wall of the housing 1 may be defined, and a shaking mechanism is additionally provided: the shake mechanism is including rotating the cam that sets up in the inside bottom looks butt of the inclined high end of shell 1 and with screening board 21, the cam rotates with shell 1 through the pivot to coaxial coupling has driven pulleys after the one end of pivot wears out shell 1, matched with, coaxial coupling driving pulley on the output shaft of second motor 18, driving pulley and driven pulleys pass through the drive belt transmission and connect, then second motor 18 can drive the cam through driving pulley, drive belt and driven pulleys and rotate when driving two crushing rollers, the cam is alternate length axle head and screening board 21 butt just can drive screening board 21 and shake from top to bottom, both can avoid blockking up the screening hole, also can conveniently lead into rubber in the feed cylinder 6.

The implementation principle of the embodiment of the application is as follows: rubber is led into the first-stage crushing box 9 through the first feed inlet 2, the first motor 13 and the second motor 18 are started, the first motor 13 can drive the complete bevel gear 14 and the driving rod 7 to rotate at the same time, the complete bevel gear 14 can drive the threaded rod 10 to rotate in an automatic alternating direction through the two incomplete bevel gears 15, the sliding block 11 can drive the plurality of cutting knives 12 to slide back and forth in the first-stage crushing box 9, the rubber block is cut for the first time, the second motor 18 can drive the first crushing roller 16 and the second crushing roller 17 to synchronously rotate, and the rubber block is cut and crushed for the second time, so that the qualified size is achieved, and the rubber block flows out of the first discharge port 3 through the screening plate 21; the unqualified rubber blocks with larger size are remained on the screening plate 21, and are led into the feeding cylinder 6 by the inclined screening plate 21, at the moment, the spiral guide plate 8 is driven by the driving rod 7 to rotate, so that the rubber blocks can be transferred from the position of the second feed inlet 4 to the second discharge outlet 5, automatically returned to the positions above the two crushing rollers, and secondary cutting is performed again until the qualified size is reached.

Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered by the scope of the claims of the present utility model.

Claims

1. An automatic efficient rubber crusher, comprising:

the device comprises a shell (1), wherein a first-stage crushing mechanism, a second-stage crushing mechanism and a screening mechanism are sequentially arranged in the shell (1) along the material flowing direction, a first feed inlet (2) is formed in the upper end of the shell (1), and a first discharge outlet (3) is formed in the lower end of the shell;

a second feeding port (4) and a second discharging port (5) are sequentially arranged on one side wall of the shell (1) along the material flowing direction, the second feeding port (4) is positioned between the first-stage crushing mechanism and the second-stage crushing mechanism, and the second discharging port (5) is communicated with a coarse material outlet of the screening mechanism;

the automatic feeding mechanism is arranged between the second feeding hole (4) and the second discharging hole (5) and is communicated with the second feeding hole (4) and the second discharging hole (5) and used for guiding the coarse materials in the second discharging hole (5) into the second feeding hole (4);

the first connecting mechanism is arranged on the shell (1) and is connected with the primary crushing mechanism and the automatic feeding mechanism, and is used for synchronously starting the primary crushing mechanism and the automatic feeding mechanism;

the automatic feeding mechanism comprises a feeding cylinder (6) fixedly connected with the shell (1), a driving rod (7) rotationally arranged in the feeding cylinder (6) along the material flowing direction and a spiral guide plate (8) fixedly connected with the driving rod (7), wherein openings are formed in positions, corresponding to the second feeding hole (4) and the second discharging hole (5), of the feeding cylinder (6); the upper end and the lower end of the spiral guide plate (8) are in one-to-one correspondence with the second discharge hole (5) and the second feed hole (4); one end of the driving rod (7) penetrates out of the feeding cylinder (6) and then is connected with the first connecting mechanism;

the upper end of the shell (1) is fixedly provided with a first-stage crushing box (9), and the first feed inlet (2) is formed in the first-stage crushing box (9); the first-stage crushing mechanism comprises a threaded rod (10) which is arranged at the bottom of the first-stage crushing box (9) in a manner of rotating along a direction perpendicular to the material flowing direction, a sliding block (11) which is in threaded connection with the threaded rod (10) and a plurality of cutting knives (12) which are uniformly arranged on the sliding block (11) at intervals, one end of the threaded rod (10) penetrates out of the first-stage crushing box (9) and then is connected with the first connecting mechanism, and the first connecting mechanism is used for driving the threaded rod (10) to intermittently and alternately rotate along the forward direction or the reverse direction; a plurality of first blanking holes communicated with the inside of the shell (1) are formed in the inner wall of the bottom of the first-stage crushing box (9) along the moving direction of the sliding block (11);

the first connecting mechanism comprises a first motor (13) coaxially connected with the driving rod (7), a complete bevel gear (14) coaxially connected with the driving rod (7) and two incomplete bevel gears (15) coaxially connected with the threaded rod (10), wherein the first motor (13) is fixedly arranged on the first-stage crushing box (9), and toothed parts of the two incomplete bevel gears (15) are staggered and alternately meshed with the complete bevel gears (14).

2. An automatic efficient rubber crusher according to claim 1, characterized in that: the secondary crushing mechanism comprises a first crushing roller (16) and a second crushing roller (17) which are arranged in the shell (1) in a manner of rotating along the direction perpendicular to the material flow, a second connecting mechanism is arranged between the first crushing roller (16) and the second crushing roller (17), and the second connecting mechanism is used for driving the first crushing roller (16) and the second crushing roller (17) to synchronously rotate.

3. An automatic efficient rubber crusher according to claim 2, characterized in that: the second connecting mechanism comprises a second motor (18) fixedly connected with the shell (1), a driving gear (19) driven by the second motor (18) to rotate and a driven gear (20) coaxially connected with the first crushing roller (16), the driving gear (19) is coaxially connected with the second crushing roller (17), and the driving gear (19) is meshed with the driven gear (20).

4. An automatic efficient rubber crusher according to claim 1, characterized in that: the screening mechanism is a screening plate (21) obliquely arranged in the shell (1), the inclined low end of the screening plate (21) is connected with the second discharge port (5), and a plurality of second discharging holes for materials to flow out are formed in the screening plate (21).