Sorting and screening device for harmless disposal of waste

Abstract

The present invention relates to the technical field of disposal of waste. Disclosed is a sorting and screening device for harmless disposal of waste, comprising a box body, a feed port being formed in the top of the box body; a transmission mechanism is provided on the right side of the box body; a separation mechanism is provided on the rear portion of the box body; a discharge port is formed in the left side of the box body; a first roller, a second roller, a flattening roller, a first crushing roller and a second crushing roller are all provided on an inner wall of the box body; the surface of the first roller is in driving connection with the surface of the second roller by means of a conveyor belt; two fans are provided on the inner right wall of the box body; a screen plate is provided on the inner wall of the box body. The present invention can automatically sort waste by means of the transmission mechanism, so as to reduce the labor intensity of workers and improve working efficiency, and simultaneously sorts multiple types of waste by means of the transmission mechanism and the separation mechanism without the need for sorting treatment in multiple procedures, reducing investment costs.

Description

A classification and screening device for harmless treatment of garbage Technical Field

[0001] The present invention relates to the technical field of garbage disposal, in particular to a classification and screening device for harmless garbage disposal. Background Art

[0002] Garbage is solid waste generated in human daily life and production. Due to its large discharge volume, complex and diverse composition, and its pollution, resource and social nature, it needs to be harmlessly treated, resource-based, reduced and socialized. If it is not properly handled, it will pollute the environment, affect environmental hygiene, waste resources, undermine production and living safety, and destroy social harmony. Garbage disposal is to quickly remove garbage and treat it harmlessly.

[0003] At present, in garbage treatment plants, most workers still rely on manual sorting of garbage, resulting in low work efficiency and high labor input. Some existing sorting equipment can only perform a single classification. When further classification is required, it needs to be moved to the next process for classification, which is very troublesome and has a high investment cost. Therefore, a classification and screening device for harmless treatment of garbage is proposed to solve the above problems. Technical issues

[0004] In view of the shortcomings of the existing technology, the present invention provides a classification and screening device for harmless treatment of garbage, which solves the problems of low efficiency of manual classification, relatively simple machine classification, and the need for multiple classifications. Technical Solutions

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a classification and screening device for harmless treatment of garbage, comprising a box body, a feeding port is provided on the top of the box body, a transmission mechanism is provided on the right side of the box body, a separation mechanism is provided on the rear side of the box body, a discharging port is provided on the left side of the box body, a No. 1 roller, a No. 2 roller, a smoothing roller, a No. 1 crushing roller and a No. 2 crushing roller are respectively provided on the inner wall of the box body, and the No. 1 crushing roller and the No. 2 crushing roller are located above the No. 1 roller and the No. 2 roller, the smoothing roller is located between the No. 2 roller and the No. 1 crushing roller, the surface of the No. 1 roller is connected to the surface of the No. 2 roller through a conveyor belt, two fans are provided on the right wall inside the box body, and a screen plate is provided on the inner wall of the box body, and the screen plate is located above the No. 2 crushing roller;

[0006] The transmission mechanism includes a No. 1 pulley, the surface of the No. 1 pulley is connected to the surface of the double-layer pulley through a belt, the surface of the double-layer pulley is connected to the surface of the No. 1 small pulley through a belt, a No. 2 pulley is provided at the axis of the No. 1 small pulley, the surface of the No. 2 pulley is connected to the surface of the No. 3 pulley through a belt, a No. 2 small pulley is provided at the axis of the No. 3 pulley, the surface of the No. 2 small pulley is connected to the surface of the No. 4 pulley through a belt, a picking device is provided on the left side of the box body, and a motor is provided on the right side of the box body.

[0007] Preferably, the selecting device includes a No. 1 gear, a No. 2 gear is provided on the surface of the No. 1 gear, a No. 1 sprocket is provided at the axis of the No. 2 gear, the surface of the No. 1 sprocket is connected to the surface of the No. 2 sprocket through a chain, a turntable is provided at the axis of the No. 2 sprocket, and a transmission rod is provided on the left side of the turntable.

[0008] Preferably, the axes of the No. 1 and No. 2 gears are respectively welded and fixed to the axes of the No. 1 crushing roller and the No. 2 crushing roller through connecting rods, the surface of the No. 2 gear is meshed with the surface of the No. 1 gear, the axis of the No. 1 sprocket is welded and fixed to the axis of the No. 2 gear, the axis of the turntable is welded and fixed to the axis of the No. 2 sprocket, the inner wall of the transmission rod is rotationally connected to the left side of the turntable through the connecting rod, the axis of the No. 2 sprocket is rotationally connected to the left side of the box through the connecting rod, and the inner wall of the transmission rod is rotationally connected to the left side of the screen plate through the connecting rod.

[0009] Preferably, the separation mechanism includes a mounting plate, an inner wall of the mounting plate is provided with a clamping strip, a moving block is provided at the rear of the clamping strip, an electromagnet is provided at the bottom of the moving block, and an electric push rod is provided at the rear of the mounting plate.

[0010] Preferably, the surface of the clamping strip is slidably connected to the inner wall of the mounting plate, the front of the moving block is welded and fixed to the rear of the clamping strip, the top of the electromagnet is fixedly mounted on the bottom of the moving block, the surface of the electric push rod is connected to the rear of the mounting plate by bolts, the front of the mounting plate is connected to the rear of the box by bolts, the front of the moving block is slidably connected to the rear of the mounting plate, and the output end of the electric push rod is fixedly connected to the right side of the moving block.

[0011] Preferably, the left end of the motor is connected to the right side of the box by bolts, the axis of the No. 2 pulley is welded and fixed to the axis of the No. 1 small pulley, and the axis of the No. 2 small pulley is welded and fixed to the axis of the No. 3 pulley.

[0012] Preferably, the feed port is opened at the top of the box, the discharge port is opened on the left side of the box, both ends of the No. 1 roller, No. 2 roller, smoothing roller, No. 1 crushing roller and No. 2 crushing roller are rotatably connected to the inner wall of the box, the axis of the fan is rotatably connected to the right wall inside the box, and the surface of the screen plate is slidably connected to the inner wall of the box.

[0013] Preferably, the output end of the motor is welded and fixed to the axis of the No. 1 roller, the axis of the No. 1 pulley is welded and fixed to the axis of the No. 2 roller through a connecting rod, the axis of the double-layer pulley is welded and fixed to the axis of the smoothing roller through a connecting rod, the axes of the No. 2 pulley and the No. 3 pulley are both welded and fixed to the axes of the two fans through a connecting rod, and the axis of the No. 4 pulley is welded and fixed to the axis of the No. 2 crushing roller through a connecting rod. Beneficial effects

[0014] Compared with the prior art, the present invention provides a classification and screening device for harmless treatment of garbage, which has the following beneficial effects:

[0015] 1. The classification and screening device for harmless treatment of garbage can automatically classify and process garbage through the transmission mechanism, thereby reducing the labor intensity of workers and significantly improving work efficiency.

[0016] 2. The classification and screening device for harmless treatment of garbage can classify multiple types of garbage at the same time through the transmission mechanism and the separation mechanism, thereby eliminating the need for multiple processes for classification and treatment, and reducing cost investment.

[0017] 3. The classification and screening device for harmless treatment of garbage can crush the screened garbage through the No. 1 and No. 2 rollers, so that the fan can blow out the broken plastics and the electromagnet can absorb the broken metals, which can increase the efficiency of classification.

[0018] 4. The classification and screening device for harmless treatment of garbage can flatten the garbage falling on the conveyor belt through the smoothing roller, thereby preventing the garbage from piling up, which in turn makes it impossible to absorb the metal later, thus limiting the scope of application of the device.

[0019] 5. The classification and screening device for harmless treatment of garbage can simultaneously drive the screening, crushing, blowing, leveling, transportation and absorption of metal in garbage by one motor, thereby reducing the number of motors placed, thereby reducing the cost investment, reducing the space occupied, realizing synchronous operation among various mechanisms and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] FIG1 is a schematic diagram of the overall structure of a classification and screening device for harmless treatment of garbage proposed by the present invention;

[0021] FIG2 is a cross-sectional view of the overall structure of a classification and screening device for harmless treatment of garbage proposed by the present invention;

[0022] FIG3 is a schematic diagram of a transmission mechanism of a classification and screening device for harmless treatment of garbage proposed by the present invention;

[0023] FIG4 is a schematic diagram of a transmission mechanism portion of a classification and screening device for harmless treatment of garbage proposed by the present invention;

[0024] FIG5 is a schematic diagram of a sorting and screening device for harmless treatment of garbage proposed by the present invention;

[0025] FIG6 is a rear view of a sorting and screening device for harmless treatment of garbage proposed by the present invention;

[0026] FIG7 is a schematic diagram of a separation mechanism of a classification and screening device for harmless treatment of garbage proposed by the present invention.

[0027] In the figure: 1. Box body; 2. Feed port; 3. Transmission mechanism; 31. Pulley No. 1; 32. Double-layer pulley; 33. Small pulley No. 1; 34. Pulley No. 2; 35. Pulley No. 3; 36. Small pulley No. 2; 37. Pulley No. 4; 38. Picking device; 381. Gear No. 1; 382. Gear No. 2; 383. Sprocket No. 1; 384. Sprocket No. 2; 385. Turntable; 386. Transmission rod; 39. Motor; 4. Separation mechanism; 41. Mounting plate; 42. Card bar; 43. Moving block; 44. Electric push rod; 45. Electromagnet; 5. Discharge port; 6. Roller No. 1; 7. Roller No. 2; 8. Smoothing roller; 9. Fan; 10. Crushing roller No. 1; 11. Crushing roller No. 2; 12. Screen plate. Best Mode for Carrying Out the Invention

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example 1

[0029] A classification and screening device for harmless treatment of garbage, as shown in Figures 1 to 7, includes a box body 1, a feeding port 2 is provided on the top of the box body 1, a transmission mechanism 3 is provided on the right side of the box body 1, a separation mechanism 4 is provided at the rear of the box body 1, a discharge port 5 is provided on the left side of the box body 1, and a No. 1 roller 6, a No. 2 roller 7, a smoothing roller 8, a No. 1 crushing roller 10 and a No. 2 crushing roller 11 are respectively provided on the inner wall of the box body 1, and the No. 1 crushing roller 10 and the No. 2 crushing roller 11 are located above the No. 1 roller 6 and the No. 2 roller 7, the smoothing roller 8 is located between the No. 2 roller 7 and the No. 1 crushing roller 10, the surface of the No. 1 roller 6 is connected to the surface of the No. 2 roller 7 by a conveyor belt, two fans 9 are provided on the right wall inside the box body 1, and a screen plate 12 is provided on the inner wall of the box body 1, and the screen plate 12 is located above the No. 2 crushing roller 11;

[0030] The transmission mechanism 3 includes a No. 1 pulley 31, the surface of the No. 1 pulley 31 is connected to the surface of the double-layer pulley 32 by a belt, the surface of the double-layer pulley 32 is connected to the surface of the No. 1 small pulley 33 by a belt, a No. 2 pulley 34 is provided at the axis of the No. 1 small pulley 33, the surface of the No. 2 pulley 34 is connected to the surface of the No. 3 pulley 35 by a belt, a No. 2 small pulley 36 is provided at the axis of the No. 3 pulley 35, the surface of the No. 2 small pulley 36 is connected to the surface of the No. 4 pulley 37 by a belt, a picking device 38 is provided on the left side of the box body 1, and a motor 39 is provided on the right side of the box body 1.

[0031] In this embodiment, the selecting device 38 includes a No. 1 gear 381, a No. 2 gear 382 is provided on the surface of the No. 1 gear 381, a No. 1 sprocket 383 is provided at the axis of the No. 2 gear 382, ​​and the surface of the No. 1 sprocket 383 is connected to the surface of the No. 2 sprocket 384 through a chain. A turntable 385 is provided at the axis of the No. 2 sprocket 384, and a transmission rod 386 is provided on the left side of the turntable 385. The selecting device 38 can drive the screen plate 12 to move back and forth, and then the garbage can be preliminarily classified and screened, and the size of the holes on the screen plate 12 can be freely adjusted according to actual needs, which is very convenient and practical.

[0032] Furthermore, the axes of the No. 1 gear 381 and the No. 2 gear 382 are welded and fixed to the axes of the No. 1 crushing roller 10 and the No. 2 crushing roller 11 respectively through connecting rods, the surface of the No. 2 gear 382 is meshed with the surface of the No. 1 gear 381, the axis of the No. 1 sprocket 383 is welded and fixed to the axis of the No. 2 gear 382, ​​the axis of the turntable 385 is welded and fixed to the axis of the No. 2 sprocket 384, and the inner wall of the transmission rod 386 is connected to the left turntable 385 through the connecting rod. The second sprocket 384 is connected to the left side of the box body 1 through a connecting rod at its axis, and the inner wall of the transmission rod 386 is connected to the left side of the screen plate 12 through a connecting rod. The engagement of the first gear 381 and the second gear 382 can drive the first crushing roller 10 and the second crushing roller 11 to rotate in opposite directions, so that the garbage can be crushed between the two, thereby turning large pieces of garbage into small pieces of garbage, making it convenient for the subsequent operations and increasing work efficiency in disguise.

[0033] Furthermore, the separation mechanism 4 includes a mounting plate 41, the inner wall of the mounting plate 41 is provided with a clamping strip 42, the rear part of the clamping strip 42 is provided with a moving block 43, the bottom of the moving block 43 is provided with an electromagnet 45, and the rear part of the mounting plate 41 is provided with an electric push rod 44. The clamping strip 42 can guide and support the movement of the moving block 43 to prevent it from shifting in the moving direction under the push of the electric push rod 44, and also prevent the electromagnet 45 from absorbing too much metal, resulting in its excessive weight, causing the moving block 43 to fall, thereby causing the device to be unable to continue working and increasing maintenance costs.

[0034] In addition, the surface of the clamping strip 42 is slidably connected to the inner wall of the mounting plate 41, the front of the moving block 43 is welded and fixed to the rear of the clamping strip 42, the top of the electromagnet 45 is fixedly mounted on the bottom of the moving block 43, the surface of the electric push rod 44 is connected to the rear of the mounting plate 41 by bolts, the front of the mounting plate 41 is connected to the rear of the box body 1 by bolts, the front of the moving block 43 is slidably connected to the rear of the mounting plate 41, and the output end of the electric push rod 44 is fixedly connected to the right side of the moving block 43. The electric push rod 44 can be used to push out the moving block 43 after a batch of garbage is sorted, and the metal absorbed by the electromagnet 45 under the moving block 43 is recovered. Then the electric push rod 44 retracts to drive the electromagnet 45 to reset, so that it can continue to absorb metal.

[0035] In addition, the left end of the motor 39 is connected to the right side of the box body 1 by bolts, the axis of the No. 2 pulley 34 is welded and fixed to the axis of the No. 1 small pulley 33, and the axis of the No. 2 small pulley 36 is welded and fixed to the axis of the No. 3 pulley 35. One motor 39 can simultaneously drive the screening of garbage, the crushing of garbage, the blowing out of garbage, the flattening of garbage, the transportation of garbage, and the absorption of metal in garbage, thereby reducing the number of motors 39 placed, thereby reducing the cost investment, and reducing the space occupied, realizing synchronous operation between various mechanisms, and improving work efficiency. Example 2

[0036] As shown in Figures 1 to 6, the feed port 2 is opened at the top of the box body 1, and the discharge port 5 is opened on the left side of the box body 1. Both ends of the No. 1 roller 6, the No. 2 roller 7, the smoothing roller 8, the No. 1 crushing roller 10 and the No. 2 crushing roller 11 are rotatably connected to the inner wall of the box body 1. The axis of the fan 9 is rotatably connected to the right wall inside the box body 1. The surface of the screen plate 12 is slidably connected to the inner wall of the box body 1. Connecting rods are welded on both sides of the screen plate 12, and the connecting rods are placed in the slide grooves opened on the inner wall of the box body 1. This allows the screen plate 12 to move back and forth in an inclined state, thereby preventing the screen plate 12 from rotating itself during movement or failing to maintain an inclined state, resulting in the screened garbage being unable to move to the No. 1 crushing roller 10 and the No. 2 crushing roller 11, causing the device to be unable to continue working and its practicality greatly reduced.

[0037] It is worth noting that the output end of the motor 39 is welded and fixed to the axis of the No. 1 roller 6, the axis of the No. 1 pulley 31 is welded and fixed to the axis of the No. 2 roller 7 through a connecting rod, the axis of the double-layer pulley 32 is welded and fixed to the axis of the smoothing roller 8 through a connecting rod, the axes of the No. 2 pulley 34 and the No. 3 pulley 35 are welded and fixed to the axes of the two fans 9 through a connecting rod, and the axis of the No. 4 pulley 37 is welded and fixed to the axis of the No. 2 crushing roller 11 through a connecting rod. The reason why this device uses belt drive is that the belt has good elasticity, can alleviate impact and vibration during work, and moves smoothly and noiselessly. When the load is too large, the belt slips on the wheel, thereby preventing other parts from being damaged and playing a safety protection role. The belt is an intermediate part, and its length can be selected according to needs within a certain range to adapt to working conditions with larger center distance requirements. It has a simple structure, is easy to manufacture, and is easy to install and maintain, and has a low cost. Therefore, belt drive is selected.

[0038] When the classification and screening device for harmless treatment of garbage of the present invention is used, garbage is put into the feed port 2, and the garbage will fall on the screen plate 12. The motor 39 drives the No. 1 roller 6 to rotate, the No. 1 roller 6 drives the No. 2 roller 7 to rotate, the No. 2 roller 7 drives the No. 1 pulley 31 to rotate, the No. 1 pulley 31 drives the double-layer pulley 32 to rotate, the double-layer pulley 32 drives the No. 1 small pulley 33 to rotate, the No. 1 small pulley 33 drives the No. 2 pulley 34 to rotate, the No. 2 pulley 34 drives the No. 3 pulley 35 to rotate, the No. 3 pulley 35 drives the No. 2 small pulley 36 to rotate, the No. 2 small pulley 36 drives the No. 4 pulley 37 to rotate, and the No. 4 pulley 37 drives the No. 2 crushing Roller 11 rotates, and the No. 2 crushing roller 11 drives the No. 2 gear 382, ​​which drives the No. 1 sprocket 383 to rotate. The No. 1 sprocket 383 drives the No. 2 sprocket 384 to rotate. The No. 2 sprocket 384 drives the turntable 385 to rotate. The turntable 385 drives the screen plate 12 to move back and forth through the transmission rod 386, so that the screen plate 12 can vibrate and screen the garbage, so that smaller garbage such as small plastics and paper scraps fall through the screen plate 12, while large garbage will move between the No. 2 crushing roller 11 and the No. 1 crushing roller 10 through the inclined screen plate 12. At this time, the No. 2 gear 382 drives the No. 1 gear 381 to rotate, and the No. 1 gear 381 drives the No. 1 crushing roller 10 Rotation, the No. 1 crushing roller 10 and the No. 2 crushing roller 11 will rotate in opposite directions to squeeze and crush the garbage. The crushed garbage and the previously screened garbage will fall onto the conveyor belt. During the falling process, the No. 2 pulley 34 and the No. 3 pulley 35 will drive the two fans 9 to rotate, so that they can blow out the screened garbage and the crushed garbage respectively, so that the lighter garbage, such as broken plastics and paper scraps, will be blown out from the discharge port 5. The garbage falling on the conveyor belt will be driven by the rotation of the No. 1 roller 6 and the No. 2 roller 7 to move, and while moving, the double-layer pulley 32 will drive the smoothing roller 8 to rotate, so that it can flatten the accumulated garbage, thereby preventing the garbage from piling up together. , which makes it impossible to subsequently absorb the metal, resulting in a limited scope of application of the device. The flattened garbage continues to move, and the electromagnet 45 is energized. At this time, the metal in the garbage will be sucked into the electromagnet 45, and the remaining garbage will be moved out along the conveyor belt. When the garbage is processed, the electric push rod 44 will move through the moving block 43, and the moving block 43 will drive the electromagnet 45 to move, so that the electromagnet 45 moves out of the conveyor belt. At this time, the electromagnet 45 is powered off, so that the metal on the electromagnet 45 can fall and be collected. By automatically sorting and screening the garbage, the labor intensity of the workers can be reduced, and the work efficiency is significantly improved. There is no need for multiple processes for sorting and processing, which can reduce the cost investment.

[0039] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

Claims

1. A classification and screening device for harmless treatment of garbage, comprising a box (1), characterized in that: The top of the box (1) is provided with a feed port (2), the right side of the box (1) is provided with a transmission mechanism (3), the rear of the box (1) is provided with a separation mechanism (4), the left side of the box (1) is provided with a discharge port (5), the inner wall of the box (1) is provided with a No. 1 roller (6), a No. 2 roller (7), a smoothing roller (8), a No. 1 crushing roller (10) and a No. 2 crushing roller (11), respectively, and the No. 1 crushing roller (10) and the No. 2 crushing roller (11) are located above the No. 1 roller (6) and the No. 2 roller (7), the smoothing roller (8) is located between the No. 2 roller (7) and the No. 1 crushing roller (10), the surface of the No. 1 roller (6) is connected to the surface of the No. 2 roller (7) through a conveyor belt, and two fans (9) are provided on the right wall inside the box (1), and the inner wall of the box (1) is provided with a screen plate (12), and the screen plate (12) is located above the No. 2 crushing roller (11); The transmission mechanism (3) comprises a first pulley (31), the surface of the first pulley (31) being connected to the surface of a double-layer pulley (32) through a belt, the surface of the double-layer pulley (32) being connected to the surface of a first small pulley (33) through a belt, a second pulley (34) being arranged at the axis of the first small pulley (33), the surface of the second pulley (34) being connected to the surface of a third pulley (35) through a belt, a second small pulley (36) being arranged at the axis of the third pulley (35), the surface of the second small pulley (36) being connected to the surface of a fourth pulley (37) through a belt, a picking device (38) being arranged on the left side of the box body (1), and a motor (39) being arranged on the right side of the box body (1).

2. A classification and screening device for harmless treatment of garbage according to claim 1, characterized in that: The selecting device (38) comprises a first gear (381), a second gear (382) is arranged on the surface of the first gear (381), a first sprocket (383) is arranged at the axis of the second gear (382), the surface of the first sprocket (383) is connected to the surface of the second sprocket (384) through a chain, a rotating disk (385) is arranged at the axis of the second sprocket (384), and a transmission rod (386) is arranged on the left side of the rotating disk (385).

3. A classification and screening device for harmless treatment of garbage according to claim 2, characterized in that: The axes of the first gear (381) and the second gear (382) are respectively welded and fixed to the axes of the first crushing roller (10) and the second crushing roller (11) through connecting rods; the surface of the second gear (382) meshes with the surface of the first gear (381); the axis of the first sprocket (383) is welded and fixed to the axis of the second gear (382); the axis of the turntable (385) is welded and fixed to the axis of the second sprocket (384); the inner wall of the transmission rod (386) is rotationally connected to the left side of the turntable (385) through the connecting rod; the axis of the second sprocket (384) is rotationally connected to the left side of the box body (1) through the connecting rod; and the inner wall of the transmission rod (386) is rotationally connected to the left side of the screen plate (12) through the connecting rod.

4. The classification and screening device for harmless treatment of garbage according to claim 1, characterized in that: The separation mechanism (4) comprises a mounting plate (41), the inner wall of the mounting plate (41) is provided with a clamping strip (42), the rear portion of the clamping strip (42) is provided with a moving block (43), the bottom of the moving block (43) is provided with an electromagnet (45), and the rear portion of the mounting plate (41) is provided with an electric push rod (44).

5. The classification and screening device for harmless treatment of garbage according to claim 4, characterized in that: The surface of the clamping strip (42) is slidably connected to the inner wall of the mounting plate (41), the front of the moving block (43) is welded and fixed to the rear of the clamping strip (42), the top of the electromagnet (45) is fixedly mounted on the bottom of the moving block (43), the surface of the electric push rod (44) is connected to the rear of the mounting plate (41) by bolts, the front of the mounting plate (41) is connected to the rear of the box body (1) by bolts, the front of the moving block (43) is slidably connected to the rear of the mounting plate (41), and the output end of the electric push rod (44) is fixedly connected to the right side of the moving block (43).

6. The classification and screening device for harmless treatment of garbage according to claim 1, characterized in that: The left end of the motor (39) is connected to the right side of the box body (1) by bolts, the axis of the second pulley (34) is welded and fixed to the axis of the first small pulley (33), and the axis of the second small pulley (36) is welded and fixed to the axis of the third pulley (35).

7. The classification and screening device for harmless treatment of garbage according to claim 1, characterized in that: The feed port (2) is provided at the top of the box body (1), the discharge port (5) is provided at the left side of the box body (1), both ends of the No. 1 roller (6), the No. 2 roller (7), the smoothing roller (8), the No. 1 crushing roller (10) and the No. 2 crushing roller (11) are rotatably connected to the inner wall of the box body (1), the axis of the fan (9) is rotatably connected to the right wall inside the box body (1), and the surface of the screen plate (12) is slidably connected to the inner wall of the box body (1).

8. The classification and screening device for harmless treatment of garbage according to claim 1, characterized in that: The output end of the motor (39) is welded and fixed to the axis of the first roller (6); the axis of the first pulley (31) is welded and fixed to the axis of the second roller (7) through a connecting rod; the axis of the double-layer pulley (32) is welded and fixed to the axis of the smoothing roller (8) through a connecting rod; the axes of the second pulley (34) and the third pulley (35) are welded and fixed to the axes of the two fans (9) through a connecting rod; and the axis of the fourth pulley (37) is welded and fixed to the axis of the second crushing roller (11) through a connecting rod.

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