CN109847886B - A kind of oval waste paper crushing device for environmental protection and using method thereof - Google Patents

Abstract

The invention discloses an environment-friendly elliptic waste paper crushing device and a using method thereof, wherein the device comprises a crushing device main body, semi-annular cylinders fixedly arranged at two sides of the crushing device main body, an extrusion block arranged in the semi-annular cylinders in a sliding manner, a cutting device arranged in the semi-annular cylinders, a first transmission mechanism used for driving the extrusion block to move along the semi-annular cylinders, and a driving mechanism used for driving the first transmission mechanism to operate, the top of each semi-annular cylinder is provided with a feeding port, and the bottom of the crushing device main body is provided with a discharging through hole. The waste paper crushing device is ingenious and reasonable in structure, the extrusion block pushes the waste paper in the semi-annular cylinder towards the fixed cutting cylinder, and the rotary cutter cuts the strip-shaped waste paper after the waste paper passes through the fixed cutting cylinder, so that the waste paper is crushed, and the effect of improving the waste paper crushing efficiency is achieved.

Description

A kind of oval waste paper crushing device for environmental protection and using method thereof

technical field

The invention relates to the technical field of waste paper crushing, in particular to an oval waste paper crushing device for environmental protection and a use method thereof.

Background technique

Environmental protection, the full name of environmental protection, refers to the general term for various actions taken by human beings to solve actual or potential environmental problems, coordinate the relationship between human beings and the environment, and ensure sustainable economic and social development. Among them, the recycling of resources has a large proportion in the current environmental protection work, which is very important, and the recycling of paper is a very important category in the recycling and reuse of resources. Among them, pulverizing the recovered waste paper is a very important step in paper recycling. However, in the process of shredding paper, the current paper shredding devices on the market have low efficiency and need to be improved.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an oval waste paper crushing device for environmental protection and a method for using the same, which has the advantages of improving the efficiency of waste paper crushing, and solves the problem that the paper crushing device on the market has low efficiency in the process of crushing paper. The problem.

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

An oval waste paper crushing device for environmental protection, comprising a crushing device main body, a semi-annular cylinder fixedly installed on both sides of the crushing device main body, a squeeze block slidingly installed in the semi-annular cylinder, and a cutting device installed in the semi-annular cylinder , a first transmission mechanism for driving the extrusion block to move along the semi-annular cylinder, and a driving mechanism for driving the operation of the first transmission mechanism, the top of the semi-annular cylinder is provided with a feeding port, and the main body of the crushing device is provided with a feeding port. A discharge through hole is opened at the bottom.

By adopting the above technical solution, the outer edge of the crushing device formed by the two semi-annular cylinders and the main body of the crushing device is elliptical, and the pressing block can squeeze the waste paper in the direction of the cutting device, so that the waste paper can be crushed by the cutting device. After cutting, the waste paper can be discharged from the discharge through hole in time, which improves the crushing efficiency of the waste paper. The first transmission mechanism ensures that the power of the driving mechanism is reliably transmitted to the extrusion block.

As a preferred technical solution of the present invention, the cutting device includes a fixed cutting cylinder and a rotary cutter, the fixed cutting cylinder is fixedly connected to the inner wall near the end of the semi-annular cylinder, and the fixed cutting cylinder is connected to the main body of the crushing device. The rotary cutter is rotatably installed between the rotary cutters, a driver is connected to the rotation center of the rotary cutter, and a plurality of first cutting through holes are opened on the fixed cutting cylinder. The shape of the first through-cutting hole is circular, the rotary cutter is provided with a second through-cutting hole, and the shape of the second through-cutting hole is fan-shaped. By adopting the above technical solution, the waste paper moves into the first cutting through hole under the action of the pressing block, and a cutting blade can be arranged in the first cutting through hole to perform strip-shaped crushing treatment on the waste paper, and the driver drives independently. The rotary cutter rotates to shred the waste paper strips, cleverly and compactly.

As a preferred technical solution of the present invention, a rubber ring for contacting the pressing block is fixedly connected to the side of the fixed cutting cylinder away from the rotary cutter. By adopting the above technical solution, the arrangement of the rubber ring is beneficial to reduce the impact between the extrusion block and the fixed cutting cylinder and improve the service life.

As a preferred technical solution of the present invention, the first transmission mechanism includes a sliding block and a rotating gear, the sliding block is connected to the driving mechanism, the sliding block is slidably installed in the main body of the crushing device, and the sliding block is A rack is fixedly connected to the side, and the rotating gear is rotatably installed on the main body of the crushing device. The rotating gear meshes with the rack. The extrusion block and the rotating gear are fixedly connected by a connecting rod. There is a through hole for the connecting rod to move; the surface of the connecting rod is rotatably connected with a second ring, and the outer wall of the second ring contacts the through hole, or the outer wall of the connecting rod is directly connected to the inner wall of the through hole of the semi-annular cylinder touch. By adopting the above technical solution, the specific structure of the first transmission mechanism is set up, using the sliding block to slide under the driving of the driving mechanism, the rack on the sliding block drives the rotating gear to rotate, the rotating gear drives the connecting rod to move, and the connecting rod drives the extrusion block move to squeeze the waste paper.

As a preferred technical solution of the present invention, the driving mechanism includes a motor, a rotating disc and a fixing block, the motor is installed on the main body of the crushing device, the output shaft of the motor is fixedly connected to the rotating disc, and the edge of the rotating disc is A fixed block is fixedly connected in position, and the sliding block is provided with a strip-shaped through hole for the fixed block to penetrate and move; the surface of the fixed block is rotatably connected with a first ring to contact the strip-shaped through hole, or , the outer surface of the fixing block directly contacts the strip-shaped through hole. By adopting the above technical solution, the motor of the driving mechanism drives the rotating disk to rotate, and the fixed block on the outer edge of the rotating disk is inserted into the through hole of the bar watch, so when the fixed block rotates with the rotating disk, it will act on the sliding block, so that the sliding If the block moves and the rotating disk rotates, the back and forth movement of the sliding block can be realized. The structure is ingenious, compact, and the layout is reasonable.

As a preferred technical solution of the present invention, the discharge through hole includes a first discharge through hole and a second discharge through hole, and the first discharge through hole is arranged on the main body of the crushing device to connect with the semi-annular cylinder The position of the first discharge through hole is tapered, the larger end of the first discharge through hole is connected to the semi-annular cylinder, and the smaller end is connected to the second discharge through hole. By adopting the above technical solution, the specific structure of the discharge through hole is beneficial to the discharge of waste paper.

As a preferred technical solution of the present invention, an extrusion rod is fixedly connected to the end surface of the sliding block, and an extrusion through hole is formed on the main body of the crushing device for the extrusion rod to pass through and move. An extrusion plate is fixedly connected to one end of the extrusion through hole, and the extrusion plate is slidably arranged in the second discharge through hole. By adopting the above technical solution, the extrusion rod and the sliding block are linked together, and the reciprocating movement of the sliding block can realize the reciprocating movement of the extrusion rod, thereby driving the extrusion plate to move in the second discharge through hole, which is beneficial to waste paper. of timely discharge.

As a preferred technical solution of the present invention, there are four cutting devices, two of which are installed on the two ends of the semi-circular cylinder on one side, and the other two are installed on the semi-circular cylinder on the other side. At both ends of the inner side, there are two pressing blocks, one pressing block is located between the two cutting devices on the same side, and the other pressing block is located between the two cutting devices on the other side, the sliding block There are one gear and two gears, and racks are installed on the front and rear sides of the sliding block. By adopting the above technical solution, the number of feeding ports can be set to two, one for each half-ring, the number of cutting devices, the position and number of extrusion blocks, and the number of rotating gears increase the efficiency of waste paper treatment , which is beneficial to the rational utilization of the entire device structure.

As a preferred technical solution of the present invention, a feeding funnel is fixedly connected to the outer side of the feeding port. By adopting the above technical solution, the setting of the feeding funnel is beneficial to the input of waste paper.

A method of using an oval-shaped waste paper crushing device for environmental protection, using any of the above-mentioned oval-shaped waste paper crushing device for environmental protection, when in use,

Throw the waste paper into the semi-annular cylinder from the feeding port, start the driving mechanism, drive the first transmission mechanism to operate, the first transmission mechanism drives the extrusion block to move in an arc along the semi-annular cylinder, and the extrusion block drives the waste paper to the cutting device. Movement, the squeezing block squeezes the waste paper into the cutting device;

The waste paper first enters the fixed cutting cylinder and is cut into strips by the cutting blade in the first cutting through hole. After passing through the fixed cutting cylinder, the waste paper that is cut into strips enters the rotary cutter. The strip-shaped waste paper is cut in a rotary manner to pulverize the waste paper; the pulverized waste paper is discharged through the discharge through hole. By adopting the above technical solution, the use is convenient, and the crushing treatment of waste paper is efficient and convenient.

Compared with the prior art, the beneficial effects of the present invention are as follows:

In the present invention, a feeding port is set, and the feeding port is put into the semi-annular cylinder, the motor is started, and the motor belt drives the fixed block to rotate through the rotating plate, and the fixed block drives the sliding block and the rack to move left and right in the cross-shaped through hole through the strip-shaped through hole. The rack meshes with the rotating gear to make the rotating gear reciprocate, and the rotating gear drives the extrusion block to reciprocate in the semi-annular cylinder through the connecting rod, and the extrusion block pushes the waste paper in the semi-annular cylinder towards the fixed cutting cylinder. After passing through the fixed cutting drum, it is cut into strip-shaped waste paper by the fixed cutting drum. After passing through the stationary cutting drum, the rotary cutter cuts the strip-shaped waste paper, thereby shredding the waste paper, and the cut waste paper in the semi-circular drum passes through The first discharge through hole flows to the second discharge through hole, and then the main body of the pulverizing device is discharged through the second discharge through hole, thereby achieving the effect of improving the pulverizing efficiency of waste paper.

Description of drawings

Fig. 1 is the top view of the present invention;

Fig. 2 is the bottom view of the present invention;

3 is a schematic cross-sectional view of a top view of the present invention;

Fig. 4 is the enlarged schematic diagram of the structure at place A in Fig. 3;

Fig. 5 is the structure enlarged schematic diagram at B in Fig. 3;

6 is a schematic cross-sectional view of the top view of the main body of the pulverizing device of the present invention;

Fig. 7 is the schematic diagram of the fixed cutting cylinder of the present invention;

Figure 8 is a schematic view of the rotary cutter of the present invention.

In the figure: 1-the main body of the crushing device, 2-semi-ring cylinder, 3-feeding port, 4-first discharge through hole, 5-second discharge through hole, 6-fixed cutting cylinder, 7-rotary cutter, 8-Extrusion block, 9-Cross hole, 10-Motor, 11-Rotating disc, 12-Fixing block, 13-Sliding block, 14-Strip through hole, 15-Rack, 16-Rotating gear, 17- Connecting rod, 18-rubber ring, 19-feeding funnel, 20-first ring, 21-second ring, 22-extrusion through hole, 23-extrusion rod, 24-extrusion plate.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Please refer to FIG. 1 to FIG. 8 , the present invention provides a technical solution:

An elliptical waste paper crushing device for environmental protection, comprising a crushing device main body 1, a semi-annular cylinder 2 fixedly installed on both sides of the crushing device main body 1, a pressing block 8 slidably installed in the semi-annular cylinder 2, The cutting device in the cylinder 2, the first transmission mechanism for driving the extrusion block 8 to move along the semi-annular cylinder 2, and the driving mechanism for driving the operation of the first transmission mechanism, the top of the semi-annular cylinder 2 is provided with a feeding port 3. The bottom of the main body 1 of the crushing device is provided with a discharge through hole.

The cutting device includes a fixed cutting cylinder 6 and a rotary cutter 7, the fixed cutting cylinder 6 is fixedly connected to the inner wall near the end of the semi-circular cylinder 2, and the rotary cutter 7 is rotatably installed between the fixed cutting cylinder 6 and the main body 1 of the crushing device, and the rotary cutting The rotation center of the cutter 7 is connected with a driver, and the fixed cutting cylinder 6 is provided with a plurality of first cutting through holes.

A rubber ring 18 for contacting with the pressing block 8 is fixedly connected to the side of the fixed cutting cylinder 6 away from the rotary cutter 7 .

The first transmission mechanism includes a sliding block 13 and a rotating gear 16. The sliding block 13 is connected to the driving mechanism. The sliding block 13 is slidably installed in the main body 1 of the crushing device. On the main body 1 of the crushing device, the rotating gear 16 meshes with the rack 15, the extruding block 8 and the rotating gear 16 are fixedly connected by a connecting rod 17, and the semi-annular cylinder 2 is provided with a through hole for the connecting rod 17 to move; The surface of the rod 17 is rotatably connected with a second ring 21 , and the outer wall of the second ring 21 contacts the through hole, or the outer wall of the connecting rod 17 directly contacts the inner wall of the through hole of the semi-annular cylinder 2 .

The driving mechanism includes a motor 10, a rotating disk 11 and a fixed block 12. The motor 10 is installed on the main body 1 of the crushing device, the output shaft of the motor 10 is fixedly connected to the rotating disk 11, and the edge position of the rotating disk 11 is fixedly connected with a fixed block 12. The sliding block 13 is provided with a bar-shaped through hole 14 for the fixing block 12 to penetrate and move; the surface of the fixing block 12 is rotatably connected with a first ring 20 to contact the bar-shaped through hole 14, or the outer surface of the fixing block 12 directly contacts Strip through hole.

The discharge through hole includes a first discharge through hole 4 and a second discharge through hole 5. The first discharge through hole 4 is set at the position where the main body 1 of the crushing device is connected with the semi-annular cylinder 2. The first discharge through hole 4 is tapered, the larger end of the first discharge through hole 4 is connected to the semi-annular cylinder 2 , and the smaller end is connected to the second discharge through hole 5 .

An extrusion rod 23 is fixedly connected to the end surface of the sliding block 13 . The crushing device main body 1 is provided with an extrusion through hole 22 for the extrusion rod 23 to pass through and move. The extrusion rod 23 passes through one end of the extrusion through hole 22 . A pressing plate 24 is fixedly connected, and the pressing plate 24 is slidably arranged in the second discharge through hole 5 .

There are four cutting devices, two of which are installed at both ends of the semi-annular cylinder 2 on one side, and the other two cutting devices are installed at both ends of the semi-annular cylinder 2 on the other side, and the extrusion block 8 is Two, one pressing block 8 is located between the two cutting devices on the same side, the other pressing block is located between the two cutting devices on the other side, the sliding block 13 is one, the rotating gear 16 is two, the sliding Racks 15 are mounted on both the front and rear sides of the block 13 .

More specifically, please refer to FIG. 1 to FIG. 3 , the front and back of the main body 1 of the crushing device are fixedly connected with a semi-annular cylinder 2 , and a feeding port 3 is opened on the top of the semi-annular cylinder 2 , through which the waste paper is put into the semi-annular cylinder 3 . In the annular cylinder 2, the inner wall of the semi-annular cylinder 2 is fixedly connected with a feeding funnel 19 through the feeding opening 3. The setting of the feeding funnel 19 is convenient for throwing waste paper into the semi-ringing cylinder 2 through the feeding opening 3. The main body 1 of the crushing device and the semi-ringing cylinder are A first discharge through hole 4 is opened at the position where 2 are connected, and the cut waste paper in the semi-annular cylinder 2 flows through the first discharge through hole 4 to the second discharge through hole 5, and the inner wall of the main body 1 of the crushing device 1. A second discharge through hole 5 is opened through the first discharge through hole 4 , and the crushed waste is discharged from the main body 1 of the crushing device through the second discharge through hole 5 .

Please refer to FIGS. 3 to 8 , two fixed cutting cylinders 6 are fixedly connected to the inner wall of the semi-annular cylinder 2 , and a rubber ring 18 is fixedly connected to the surface of the fixed cutting cylinder 6 away from the rotary cutter 7 . The rubber ring 18 is provided for Placing the extrusion block 8 directly collides with the fixed cutting cylinder 6 to cause damage, the two fixed cutting cylinders 6 are fixedly connected to the inner walls near the two ends of the semi-ring cylinder 2, and the surface of the fixed cutting cylinder 6 close to the main body 1 of the crushing device is fixedly connected with Rotary cutter 7, the rotary cutter 7 comes with an independent driver and rotates by itself, and the inner wall of the semi-annular cylinder 2 is slidably connected with an extrusion block 8, and the extrusion block 8 moves in the semi-annular cylinder 2. The waste paper is pushed toward the fixed cutting drum 6, and the waste paper passes through the fixed cutting drum 6 and is cut into strip-shaped waste paper by the fixed cutting drum 6. After passing through the fixed cutting drum 6, the rotary cutter 7 cuts the strip-shaped waste paper. Cutting to pulverize the waste paper, the main body 1 of the pulverizing device is provided with a cross hole 9, the inner wall of the pulverizing device main body 1 is fixedly connected with a motor 10 through the cross hole 9, and the output shaft of the motor 10 is fixedly connected with a rotating disk 11. 10 is used to drive the rotating disk 11 to rotate, the rotating disk 11 drives the fixed block 12 to rotate, the edge of the rotating disk 11 or the position close to the edge is fixedly connected with a fixed block 12 with a circular cross-sectional shape, and the inner surface of the cross hole 9 is slidably connected There is a sliding block 13 , and the sliding block 13 is restricted by the cross hole 9 and can only move left and right in the cross hole 9 .

The inner wall of the main body 1 of the crushing device is provided with two extrusion through holes 22, the extrusion rod 23 is slidably arranged in the extrusion through hole 22, and the end of the extrusion rod 23 close to the sliding block 13 is fixedly connected to the side of the sliding block 13, A pressing plate 24 is fixedly connected to one end of the pressing rod 23 away from the sliding block 13 , and the pressing plate 24 slides on the inner surface of the second discharging through hole 5 . The sliding block 13 slides left and right in the cross hole 9, and the sliding block 13 pushes the pressing plate 24 to slide left and right in the second discharge hole 5 through the extrusion rod 23, and squeezes the shredded paper at the second discharge hole 5 , to prevent the shredded paper from being blocked at the second discharge through hole 5 .

The sliding block 13 is provided with a strip-shaped through hole 14 , the outer surface of the fixed block 12 slides in the inner surface of the strip-shaped through hole 14 , the fixed block 12 rotates with the rotating disk 11 , and the fixed block 12 is in the strip-shaped through hole 14 . , the sliding block 13 can only move left and right under the restriction of the cross hole 9 , so that the sliding block 13 can move left and right in the cross hole 9 . The surface of the fixing block 12 is rotatably connected with a first ring 20 , and the surface of the first ring 20 is in contact with the surface of the bar-shaped through hole 14 , so that the rotation of the fixing block 12 in the bar-shaped through hole 14 is smoother.

A rack 15 is fixedly connected to the front side and rear side of the sliding block 13, and a rotating gear 16 is rotatably connected to the inner wall of the main body 1 of the crushing device through the cross hole 9, that is, the rotating gear 16 is located in the vertical through hole of the cross hole 9, The surface of the rotating gear 16 meshes with the rack 15 , so that when the rack 15 moves left and right following the sliding block 13 , the meshing of the rack 15 and the rotating gear 16 makes the rotating gear 16 reciprocate. A connecting through hole is formed on the surface of the semi-annular cylinder 2 close to the main body 1 of the crushing device. A connecting rod 17 is fixedly connected between the extrusion block 8 and the rotating gear 16 through the connecting through hole, and the rotating gear 16 drives the extrusion block through the connecting rod 17. 8 reciprocates in the semi-annular cylinder 2. The surface of the connecting rod 17 is rotatably connected with a second annular ring 21, and the surface of the second annular ring 21 contacts the inner wall of the semi-annular cylinder 2 through the connecting through hole, so that the connecting rod 17 rotates more smoothly in the connecting through hole.

Working principle: First put the waste paper into the semi-circular cylinder 2 through the feeding port 3, start the motor 10, the motor 10 belt drives the fixed block 12 to rotate through the rotating disk 11, and the fixed block 12 drives the sliding block 13 and the sliding block 12 through the strip through hole 14. The rack 15 moves left and right in the cross hole 9 , the rack 15 meshes with the rotating gear 16 to make the rotating gear 16 reciprocate, and the rotating gear 16 drives the extrusion block 8 to reciprocate in the semi-annular cylinder 2 through the connecting rod 17 , the pressing block 8 pushes the waste paper in the semi-annular cylinder 2 towards the fixed cutting cylinder 6, the waste paper passes through the fixed cutting cylinder 6 and is cut into strip-shaped waste paper by the fixed cutting cylinder 6, after passing through the fixed cutting cylinder 6 , the rotary cutter 7 cuts the strip-shaped waste paper, thereby pulverizing the waste paper, and the cut waste paper in the semi-ring 2 flows through the first discharge through hole 4 to the second discharge through hole 5, and then passes through The second discharge through hole 5 discharges the crushing device main body 1, and when the sliding block 13 slides left and right in the cross through hole 9, the sliding block 13 pushes the extrusion plate 24 through the extrusion rod 23 to the left and right in the second discharge through hole 5 Slide and squeeze the shredded paper at the second discharge through hole 5 to prevent the shredded paper from being blocked at the second discharge through hole 5 .

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, and substitutions can be made in these embodiments without departing from the principle and spirit of the invention and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (4)

1. The environment-friendly elliptic waste paper crushing device is characterized by comprising a crushing device main body (1), semi-annular cylinders (2) fixedly arranged at two sides of the crushing device main body (1), extrusion blocks (8) slidably arranged in the semi-annular cylinders (2), a cutting device arranged in the semi-annular cylinders (2), a first transmission mechanism for driving the extrusion blocks (8) to move along the semi-annular cylinders (2) and a driving mechanism for driving the first transmission mechanism to operate, wherein the top of each semi-annular cylinder (2) is provided with a feed inlet (3), the bottom of the crushing device main body (1) is provided with a discharge through hole, the cutting device comprises a fixed cutting cylinder (6) and a rotary cutter (7), the fixed cutting cylinder (6) is fixedly connected to the inner wall close to the tail end of each semi-annular cylinder (2), and the rotary cutter (7) is rotatably arranged between the fixed cutting cylinder (6) and the crushing device main body (1), the rotary center of the rotary cutter (7) is connected with a driver, a plurality of first cutting through holes are formed in the fixed cutting cylinder (6), the first transmission mechanism comprises a sliding block (13) and a rotating gear (16), the sliding block (13) is connected with a driving mechanism, the sliding block (13) is slidably mounted in the crushing device main body (1), a rack (15) is fixedly connected to the side surface of the sliding block (13), the rotating gear (16) is rotatably mounted on the crushing device main body (1), the rotating gear (16) is meshed with the rack (15), the extrusion block (8) is fixedly connected with the rotating gear (16) through a connecting rod (17), and a through hole for the connecting rod (17) to move is formed in the semi-annular cylinder (2); the surface of the connecting rod (17) is rotatably connected with a second circular ring (21), the outer wall of the second circular ring (21) is in contact with the through hole, or the outer wall of the connecting rod (17) is directly in contact with the inner wall of the through hole of the semi-annular cylinder (2), the driving mechanism comprises a motor (10), a rotating disc (11) and a fixed block (12), the motor (10) is installed on the crushing device main body (1), the output shaft of the motor (10) is fixedly connected with the rotating disc (11), the edge position of the rotating disc (11) is fixedly connected with the fixed block (12), and the sliding block (13) is provided with a strip-shaped through hole (14) for the fixed block (12) to penetrate and move; the surface of the fixed block (12) is rotatably connected with a first circular ring (20) to contact with a strip-shaped through hole (14), or the outer surface of the fixed block (12) is directly contacted with the strip-shaped through hole, the discharge through hole comprises a first discharge through hole (4) and a second discharge through hole (5), the first discharge through hole (4) is arranged at the position where the crushing device main body (1) is connected with the semi-annular cylinder (2), the first discharge through hole (4) is in a gradually reducing shape, the larger end of the first discharge through hole (4) is communicated with the semi-annular cylinder (2), the smaller end of the first discharge through hole is communicated with the second discharge through hole (5), an extrusion rod (23) is fixedly connected with the end surface of the sliding block (13), an extrusion through hole (22) for the extrusion rod (23) to penetrate out and move is arranged on the crushing device main body (1), the extrusion rod (23) penetrates out of one end of the extrusion through, the extrusion plates (24) are arranged in the second discharge through holes (5) in a sliding mode, the number of the cutting devices is four, two cutting devices are arranged at two ends in the semi-annular cylinder (2) on one side, the other two cutting devices are arranged at two ends in the semi-annular cylinder (2) on the other side, the number of the extrusion blocks (8) is two, one extrusion block (8) is located between the two cutting devices on the same side, the other extrusion block is located between the two cutting devices on the other side, one sliding block (13) is arranged, the number of the rotating gears (16) is two, and racks (15) are arranged on the front side face and the rear side face of the sliding block (13);

when the waste paper cutting machine is used, waste paper is thrown into the semi-annular cylinder (2) through the feed inlet (3), the motor (10) is started, the motor (10) drives the fixed block (12) to rotate through the rotating disc (11), the fixed block (12) drives the sliding block (13) and the rack (15) to move left and right through the strip-shaped through hole (14), the rack (15) is meshed with the rotating gear (16) to enable the rotating gear (16) to rotate in a reciprocating mode, the rotating gear (16) drives the extrusion block (8) to move in the semi-annular cylinder (2) in a reciprocating mode through the connecting rod (17), the extrusion block (8) pushes the waste paper in the semi-annular cylinder (2) towards the fixed cutting cylinder (6), and the waste paper penetrates through the fixed cutting cylinder (6) and is cut into strip-shaped waste paper by the fixed cutting cylinder (6), after passing through the fixed cutting cylinder (6), the strip waste paper is cut by the rotary cutter (7) so as to be crushed, the cut waste paper in the semi-annular cylinder (2) flows to the second discharging through hole (5) through the first discharging through hole (4), and then is discharged out of the crushing device main body (1) through the second discharging through hole (5), and meanwhile, when the sliding block (13) slides left and right, the sliding block (13) pushes the extrusion plate (24) to slide left and right in the second discharging through hole (5) through the extrusion rod (23) so as to extrude the crushed paper at the second discharging through hole (5).

2. An environmentally friendly oval waste paper shredder according to claim 1, characterised in that a rubber ring (18) for contacting the crushing block (8) is fixedly attached to the side of the stationary cutting drum (6) remote from the rotary cutter (7).

3. The environmentally friendly elliptic used paper shredder according to claim 1, wherein a feeding funnel (19) is fixedly connected to the outside of the feeding port (3).

4. The use method of the oval waste paper shredder for environmental protection of claim 1, wherein, in use,

throwing waste paper into the semi-annular cylinder (2) from the feed port (3), starting the driving mechanism to drive the first transmission mechanism to operate, driving the extrusion block (8) to do arc motion along the semi-annular cylinder (2), driving the waste paper to move towards the cutting device by the extrusion block (8), and extruding the waste paper into the cutting device by the extrusion block (8);

the waste paper firstly enters a fixed cutting cylinder (6), is cut into strips by a cutting blade in a first cutting through hole, the waste paper cut into strips enters a rotary cutter (7) after passing through the fixed cutting cylinder (6), and the rotary cutter (7) carries out rotary cutting on the strip waste paper to crush the waste paper; the crushed waste paper is discharged through the discharge through hole.

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