An efficient and environmentally friendly plastic recycling crushing device

Abstract

The present application relates to an efficient and environmentally friendly crushing device for plastic recycling, and relates to the technical field of plastic recycling. The crushing device includes a machine body, an input belt and an output belt, and a crushing mechanism. The crushing mechanism includes: two crushing rods, which are rotatably arranged on the machine body and are provided with multiple blades; a baffle plate, which is used to block the passage of plastic and is provided with multiple material holes for the blades to pass through; a driving assembly, which is used to drive the two crushing rods to rotate; and a cleaning assembly, which is used to move the plastic that falls onto the baffle plate toward the material holes. The present application has a design of a baffle plate, blades, and material holes, so that the fallen plastic is crushed by the blades, reducing the probability of the plastic falling downward without being crushed by the blades. At the same time, the cleaning assembly can move the plastic outside the blades back to the blades for crushing, thereby further improving the crushing effect and efficiency and increasing the life of the machine body.

Description

Technical Field

[0001] The present application relates to the technical field of plastic recycling, and in particular to a highly efficient and environmentally friendly crushing device for plastic recycling. Background Art

[0002] In recent years, the relevant technologies of my country's plastic products industry have become more and more mature and perfect. At the same time, waste plastics are also increasing. The recycling of waste plastics can not only alleviate the tight supply of raw resins, but also reduce the consumption of raw resins and reduce product costs. The role of the plastic crusher is to destroy the plastic or turn it into smaller fragments, and recycle it into new products. It plays an indispensable role in waste recycling in the plastics industry. Therefore, improving the crushing efficiency of the crusher is also one of the important tasks.

[0003] Crusher generally crushes plastic by crushing knives installed on the body. However, during the crushing process, plastic is generally continuously input through a conveyor belt, and then the crushed plastic is output through an output belt to continuously crush the plastic. However, during the crushing process, it is easy for the plastic to fall without coming into contact with the crushing knife, or the plastic falls down to the output belt before being completely crushed, thereby reducing the crushing effect of the plastic. In addition, the plastic is easy to remain in the body during the crushing process. The residual plastic can easily shorten the life of the equipment and is very troublesome to clean, reducing the life of the body and the crushing efficiency. Summary of the Invention

[0004] In order to improve the crushing efficiency and effect and increase the life of the machine body, the present application provides a high-efficiency and environmentally friendly crushing device for plastic recycling.

[0005] This application provides an efficient and environmentally friendly plastic recycling crushing device, which adopts the following technical solutions:

[0006] An efficient and environmentally friendly plastic recycling crushing device includes a body, an input belt, an output belt, and a crushing mechanism. The crushing mechanism includes:

[0007] Two crushing rods are rotatably mounted on the machine body and each crushing rod is provided with a plurality of blades at intervals;

[0008] The baffle plate is provided on the machine body and is used to block the passage of plastic and has a plurality of material holes for the blades to pass through. The blades on the two crushing rods cooperate with each other to crush the plastic and then output it through the material holes;

[0009] A driving assembly, used to drive the two breaking rods to rotate in opposite directions;

[0010] The cleaning component is arranged on the machine body and is used for moving the plastic dropped onto the baffle plate toward the material through hole.

[0011] By adopting the above technical solution, the driving component drives the crushing rod and the blade to rotate, the input belt inputs the plastic into the machine body, the plastic falls onto the baffle plate, and at the same time the plastic also falls onto the blade for crushing. The crushed plastic is output through the feed hole, and then the output belt outputs the crushed plastic fragments. At the same time, the cleaning component is continuously started to push the plastic on the baffle plate to the feed hole, that is, the blade, and the blade then crushes the plastic.

[0012] Through the design of the baffle plate, blade and material hole, the fallen plastic is crushed by the blade, reducing the probability of the plastic falling down without being crushed by the blade. At the same time, the cleaning component can move the plastic outside the blade back to the blade for crushing, thereby further improving the crushing effect and efficiency. Moreover, when the plastic crushing is completed, as the input plastic decreases, the cleaning component can continue to push the plastic on the baffle plate through the blade for crushing and removal, thereby automatically cleaning the plastic in the machine body, making the crushing device more efficient and environmentally friendly. The cleaning component can improve the crushing effect while also reducing the probability of plastic remaining in the machine body, thereby increasing the life of the machine body.

[0013] Optionally, the baffle includes a horizontal section in a horizontal state and guide sections located on both sides of the horizontal section and connected to the machine body at an angle upward. The material through hole is located on the horizontal section, and the guide section is used to guide the plastic to the material through hole for crushing.

[0014] By adopting the above technical solution, the guide section can guide the plastic to the horizontal section, i.e. the blade, for crushing. At the same time, the cleaning component is combined to enable more plastic to be moved to the blade for crushing and output, thereby further improving the crushing effect and efficiency.

[0015] Optionally, the cleaning component includes:

[0016] A plurality of cleaning pipes are provided on the machine body and located between two adjacent blades and are used for jet cleaning. The direction of the gas ejected from the cleaning pipes intersects with the axis direction of the crushing rod and causes the plastic on the baffle plate to move toward the material through hole.

[0017] A plurality of filter plates are respectively arranged on a plurality of cleaning pipes and are used to block the entry of plastic and enable the gas to be ejected evenly.

[0018] By adopting the above technical solution, due to the design of multiple blades, the blades will block the gas and interfere with the cleaning, thereby reducing the cleaning effect on the plastic. Therefore, the cleaning pipe is designed to be located between the two blades. At the same time, the direction of the gas ejected from the cleaning pipe intersects with the axis direction of the crushing rod. Therefore, after the cleaning pipe is ejected, it can push the plastic to move obliquely toward the blade, so that the plastic located between the multiple blades can be moved to the blade for crushing under the blowing of gas, and the gas ejection will not interfere with the crushing of the blade, and the rotation of the blade will not reduce the cleaning effect of the gas on the plastic, thereby further greatly improving the crushing effect and efficiency of the plastic.

[0019] The filter plate can prevent plastic from entering the cleaning pipe, and the filter plate can also evenly disperse the gas into multiple small air flows, thereby increasing the gas's push on the plastic. At the same time, it can also generate driving force between the plastic fragments, so that more plastic fragments can be moved to the blade for crushing, which can further greatly improve the crushing effect and efficiency of the plastic.

[0020] Optionally, a material blocking box is provided on the lower surface of the material blocking plate and located at the material passing hole. The arc-shaped material blocking box is coaxially arranged with the blade. The blade extends into the material blocking box and forms a passage space for plastic fragments to pass through between the blade and the inner wall of the material blocking box. The material blocking box is provided with a plurality of discharge holes for plastic fragments to pass through at intervals.

[0021] By adopting the above technical solution, after the blades crush the plastic, some large plastic fragments still remain and fall onto the output belt, thereby reducing the crushing efficiency of the plastic; after the plastic is crushed by the blades, it enters the material blocking box, and then the plastic fragments are output through multiple discharge holes. At the same time, the rotation of the blades can push the plastic fragments to move. When the plastic fragments are large and cannot pass through the discharge holes, the blades push the plastic fragments out of the material blocking box, and then the gas ejected by the cleaning component continues to push the plastic to the feed hole for crushing, thereby improving the crushing effect of the plastic, and the rotation of the blades can push the plastic fragments to move, so that the plastic fragments can be output through the discharge holes faster, thereby improving the crushing efficiency of the plastic, thereby improving the crushing efficiency and effect of the plastic at the same time.

[0022] Optionally, the blade is provided with a plurality of arc-shaped storage troughs extending to the crushing rod for temporary storage of plastic. The machine body is provided with jet pipes at both ends of the crushing rod. The two jet pipes are used to spray the plastics to move closer to each other and toward the material hole and enable the gas to be blown toward the plastic through the storage trough for cleaning.

[0023] By adopting the above technical solution, the design of the storage trough reduces the blocking effect of the blade on the plastic moved to the feed hole, making it easier for the blade to contact and crush the plastic, thereby further improving the efficiency and effect of crushing the plastic; the jet tube jets cooperate with multiple cleaning tubes to blow the plastic fragments to the feed hole. Since the jet tubes are located on both sides of the multiple blades, the blades will block the flow of gas. When the storage trough is turned to correspond to the jet tube, the gas ejected from the jet tube can push the plastic fragments to the feed hole through the storage trough, thereby enabling the cleaning of plastics at multiple positions, thereby further improving the efficiency and effect of crushing the plastic.

[0024] Optionally, the air injection pipe and the cleaning pipe are both arranged to be inclined downward.

[0025] By adopting the above technical solution, the gas will push the plastic fragments to move downward, so that more fragments can be moved to the output belt, thereby improving the cleaning effect of the plastic and reducing the probability of fragments flying into the air and causing air pollution.

[0026] Optionally, the driving component includes:

[0027] Two main gears are provided on the two breaking rods and mesh with each other;

[0028] A secondary gear is rotatably mounted on the machine body and meshes with one of the main gears;

[0029] The driving member is arranged on the machine body and is used for driving the secondary gear to rotate.

[0030] By adopting the above technical solution, the driving member drives the secondary gear to rotate, the secondary gear drives the main gear meshing with it to rotate, and the main gear drives the other main gear to rotate simultaneously, so that the two stirring rods rotate simultaneously and in opposite directions.

[0031] Optionally, the driving member is provided with a torsion assembly which is inserted and installed on the tooth groove of the secondary gear under the action of elastic force for positioning.

[0032] By adopting the above technical solution, plastics are prone to concentrated accumulation during the transportation process, which increases the reaction force on the blades, increases the torque on the driving parts, greatly increases the risk of damage to the driving parts, and further reduces the crushing efficiency and effect.

[0033] The increase in the reaction force of the blade increases the force exerted by the sub-gear on the torsion assembly, which enables the torsion assembly to slip on the sub-gear tooth groove, thereby enabling the blade to achieve a smaller angle reversal. Since the plastic has a certain elasticity, the accumulated plastic is scattered and bounced away due to the reduction in force, which can alleviate the accumulation phenomenon to a certain extent and enable the torsion assembly to move back to its original position under the action of the elastic force; if the accumulation phenomenon gradually worsens, the force exerted on the torsion assembly is gradually increased, so that the torsion assembly is disengaged from the sub-gear tooth groove, and then the torsion assembly is plugged and installed on the next sub-gear tooth groove for positioning, thereby further increasing the rotation angle of the sub-gear, that is, increasing the rotation angle of the blade, making the accumulated plastic easier to scatter and bounce away, thereby reducing the concentrated accumulation of plastic, reducing the probability of damage to the drive component, and improving the crushing efficiency and effect.

[0034] Optionally, the torsion assembly includes:

[0035] A drive disc, coaxially arranged on the output shaft of the driving member;

[0036] Multiple torsion bars are slidably arranged on the driving plate in a direction close to or away from the pinion, and the number of the torsion bars is not greater than the number of pinion tooth grooves. Each of the torsion bars is provided with a spring connected to the driving plate. Under the action of the multiple springs, the multiple torsion bars are inserted into the pinion tooth grooves for positioning and realize the driving member driving the pinion to rotate.

[0037] By adopting the above technical solution, the driving part causes the driving disk and multiple torsion bars to rotate simultaneously. The multiple torsion bars are plugged and installed on the secondary gear tooth grooves under the action of spring elastic force for positioning. When the reaction force of the blade gradually increases, the torsion bar can slide on the secondary gear tooth groove for buffering and avoiding position. As the reaction force gradually increases, the torsion bar is pushed to disengage from the secondary gear tooth groove, so that the secondary gear reverses to achieve buffering, and the torsion bar is plugged and installed on the next secondary gear tooth groove under the action of the spring for positioning, which greatly reduces the torque of the plastic on the secondary gear, so that the secondary gear, the crushing rod and the blade continue to rotate for crushing, thereby improving the crushing effect and efficiency.

[0038] Optionally, the machine body is provided with an evenly distributed extrusion mechanism, and the evenly distributed extrusion mechanism includes:

[0039] Two spreading rollers are rotatably mounted on the machine body and are used to receive the plastic input from the input belt for pre-pressing and spreading the plastic evenly;

[0040] Two guide plates are arranged on the machine body and tilted downward to guide the plastic between the two spreading rollers;

[0041] The rotating assembly is arranged on the machine body and is used to drive the two evenly distributing rollers to rotate.

[0042] By adopting the above technical solution, two guide plates are used to guide the plastic between the two spreading rollers, and the rotating assembly drives the two spreading rollers to pre-press the plastic. Moreover, when the two spreading rollers rotate, the plastic can be evenly spread on the two spreading rollers, thereby achieving preliminary pre-pressing of the plastic and evenly spreading the plastic, thereby further improving the crushing efficiency and effect.

[0043] In summary, this application includes at least one of the following beneficial technical effects:

[0044] 1. Through the design of the baffle plate, blade and material hole, the fallen plastic is crushed by the blade, reducing the probability of the plastic falling down without being crushed by the blade. At the same time, the cleaning component can move the plastic outside the blade back to the blade for crushing, thereby further improving the crushing effect and efficiency. Moreover, when the plastic crushing is completed, as the input plastic decreases, the cleaning component can continue to push the plastic on the baffle plate through the blade for crushing and removal, so that the cleaning component can improve the crushing effect while also reducing the probability of plastic remaining in the machine body, thereby increasing the life of the machine body.

[0045] 2. When the reaction force of the blade increases, the torque component is buffered and avoided until it is disengaged from the tooth groove of the sub-gear. Then the torque component is inserted and installed on the tooth groove of the next sub-gear for positioning, which increases the rotation angle of the sub-gear, that is, the rotation angle of the blade, making it easier for the accumulated plastic to be scattered and bounced off, thereby reducing the concentrated accumulation of plastic, reducing the probability of damage to the drive components, and improving the crushing efficiency and effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is a schematic diagram of the three-dimensional structure of the crushing device;

[0047] Figure 2 It is a schematic diagram of the partial structure of the crushing device;

[0048] Figure 3 It is a structural diagram of the crushing mechanism and torsion assembly in the crushing device;

[0049] Figure 4 yes Figure 3 Schematic cross-section of the middle AA;

[0050] Figure 5 yes Figure 3 Enlarged schematic diagram of part B in the middle.

[0051] Figure markings: 1. Machine body; 11. Input belt; 12. Output belt; 2. Spreading and squeezing mechanism; 21. Spreading roller; 22. Guide plate; 23. Rotating assembly; 24. First gear; 25. Rotating member; 26. Second gear; 3. Crushing mechanism; 31. Crushing rod; 311. Blade; 312. Material storage trough; 32. Material blocking plate; 33. Horizontal section; 34. Guide section; 35. Material passage hole; 36. Material blocking box; 37. Passage space; 38. Material discharge hole; 4. Driving assembly; 41. Main gear; 42. Sub-gear; 43. Driving member; 44. Positioning surface; 5. Torsion assembly; 51. Driving disc; 52. Torsion bar; 53. Spring; 6. Cleaning assembly; 61. Cleaning pipe; 62. Filter plate. DETAILED DESCRIPTION

[0052] The application is described in further detail below.

[0053] The embodiments of the present application disclose a highly efficient and environmentally friendly crushing device for recycling plastics.

[0054] Reference Figure 1 and Figure 2 The efficient and environmentally friendly plastic recycling crushing device includes a body 1, an input belt 11 and an output belt 12, and a crushing mechanism 3. The input belt 11 is used to add plastic into the body 1 at an angle upward, the crushing mechanism 3 is used to crush the plastic input into the body 1, and the output belt 12 is connected to the bottom wall of the body 1 and is used to output the crushed plastic.

[0055] An evenly spreading and squeezing mechanism 2 is provided inside the machine body 1 and above the crushing mechanism 3. The evenly spreading and squeezing mechanism 2 includes two evenly spreading rollers 21, two guide plates 22 and a rotating assembly 23. The two evenly spreading rollers 21 are rotatably mounted on the machine body 1 and are arranged horizontally at intervals. The two evenly spreading rollers 21 are used to pre-extrude the plastic; the two guide plates 22 are fixedly mounted on the inner side wall of the machine body 1, and the two guide plates 22 are inclined downward and are used to guide the plastic between the two evenly spreading rollers 21.

[0056] The rotating assembly 23 is arranged on the body 1, and the rotating assembly 23 is used to drive the two balancing rollers 21 to rotate and to pre-press the plastic. The rotating assembly 23 includes two first gears 24, a rotating member 25 and a second gear 26. One end of the two balancing rollers 21 extends to the outside of the body 1. The two first gears 24 are keyed to the two balancing rollers 21 and mesh with each other. The two first gears 24 are located on the outside of the body 1; the rotating member 25 is a motor, and the rotating member 25 is fixedly mounted on the outer wall of the body 1. The second gear 26 is keyed to the output shaft of the rotating member 25 and meshes with one of the first gears 24. The rotating member 25 starts to drive the two balancing rollers 21 to rotate for pre-pressing the material, and the two balancing rollers 21 can also evenly spread the plastic along the axial direction of the balancing roller 21, so that the pre-pressed plastic is evenly moved to the crushing mechanism 3 for crushing.

[0057] Reference Figure 2 and Figure 3 The crushing mechanism 3 includes two crushing rods 31, a material baffle 32 and a drive assembly 4. The two crushing rods 31 are rotatably mounted on the inner wall of the body 1 and are horizontally spaced apart. The axes of the two crushing rods 31 are parallel to the axis of the evenly spreading roller 21 and are located below the evenly spreading roller 21. A plurality of blades 311 are spaced apart along the axis of the crushing rod 31 on the crushing rod 31. The blades 311 on the two crushing rods 31 cooperate with each other to crush the plastic. A storage groove 312 extending to the crushing rod 31 is provided on the outer wall of the blade 311. The storage groove 312 is used for temporarily storing plastic fragments, so that the plastic fragments can be more easily contacted with the blade 311 for crushing.

[0058] The baffle plate 32 is fixedly mounted on the inner wall of the body 1 and is located at the two crushing rods 31. The baffle plate 32 is used to block the passage of plastic; the baffle plate 32 is projected along the axis of the crushing rod 31 to form three sections, a horizontal section 33 located at the crushing rod 31 and in a horizontal state, and a guide section 34 located on both sides of the horizontal section 33 and connected to the inner wall of the body 1 after being inclined upward. The two guide sections 34 are used to guide the plastic fragments into the crushing area for crushing. The horizontal section 33 is provided with a rotating groove for the two crushing rods 31 to rotate. The crushing rod 31 extends to the upper and lower sides of the horizontal section 33. The horizontal section 33 is provided with a through hole 35 for the blade 311 to pass through at the corresponding position of the blade 311. The diameter of the through hole 35 is larger than that of the blade 311 and is for the plastic fragments to pass through.

[0059] Reference Figure 3 and Figure 4 The scraper 35 is provided with a plurality of holes 38 for removing the scraper 35 and a plurality of holes 38 for removing the scraper 35. The scraper 35 is provided with a plurality of holes 38 for removing the scraper 35. The scraper 35 is provided with a plurality of holes 38 for removing the scraper 35. The scraper 35 is provided with a plurality of holes 38 for removing the scraper 35. The scraper 35 is provided with a plurality of holes 38 for removing the scraper 35.

[0060] Reference Figure 2 and Figure 3The drive assembly 4 is arranged on the body 1 and is used to drive the two breaking rods 31 to rotate in opposite directions. The drive assembly 4 includes two main gears 41, a sub gear 42 and a driving member 43. The two breaking rods 31 extend to the outside of the body 1. The two main gears 41 are keyed to the two breaking rods 31, and the two main gears 41 are meshed with each other and are located outside the body 1; the sub gear 42 is rotatably installed on the body 1 and meshes with one of the main gears 41.

[0061] The driving member 43 is a motor, which is fixedly mounted on the outer wall of the body 1. The output shaft of the driving member 43 coincides with the axis of rotation of the sub-gear 42. The output shaft of the driving member 43 is provided with a torsion assembly 5 which is inserted into the tooth groove of the sub-gear 42 under the action of elastic force for positioning connection.

[0062] Reference Figure 3 and Figure 5 The tooth groove of the secondary gear 42 has an inclined positioning surface 44. When too much plastic is accumulated when the blade 311 is broken, the reaction force of the plastic on the blade 311 increases, which will cause the torsion component 5 to slide on the positioning surface 44 to avoid the position, so that the force of the blade 311 on the plastic is reduced, and the squeezed plastic rebounds and moves when the force is reduced, so that the accumulated plastic can be dispersed, thereby alleviating the plastic accumulation phenomenon to a certain extent.

[0063] If the subsequent accumulation phenomenon is alleviated, the torsion assembly 5 can move back under the action of the elastic force. If the accumulation phenomenon is further aggravated, thereby further increasing the torque, the torsion assembly 5 can continue to slide on the positioning surface 44 until the torsion assembly 5 is disengaged from the positioning surface 44. Then, the sub-gear 42 rotates under the elastic force of the plastic, so that the accumulated plastic is dispersed, thereby alleviating the plastic accumulation phenomenon. At the same time, the torsion assembly 5 is inserted into the tooth groove of the next sub-gear 42 for positioning under the action of the elastic force. Then, the blade 311 can continue to rotate under the action of the driving member 43, thereby reducing the risk of damage to the driving member 43 and further improving the crushing efficiency.

[0064] The torsion assembly 5 is located on the outside of the main gear 41. The torsion assembly 5 includes a driving disk 51 and multiple torsion bars 52. The driving disk 51 is coaxially fixedly mounted on the output shaft of the driving member 43. Multiple torsion bars 52 are arranged in a circular array around the output shaft of the driving member 43 and are located on the peripheral side of the sub-gear 42. The number of torsion bars 52 is greater than two and not greater than the number of tooth grooves of the sub-gear 42. The torsion bars 52 are radially slidably mounted along the driving disk 51 on the side wall of the driving disk 51 close to the sub-gear 42, and multiple springs 53 fixedly connected to the multiple torsion bars 52 are fixedly mounted on the driving disk 51, so that the multiple torsion bars 52 are inserted and mounted on the tooth grooves of the sub-gear 42 under the action of elastic force for positioning.

[0065] The driving member 43 is started to rotate the driving disc 51 and multiple torsion bars 52 at the same time, thereby driving the sub-gear 42 to rotate. When the torsion applied to the sub-gear 42 increases, the torsion bars 52 slide on the positioning surface 44 to avoid the position. As the torsion increases further, the multiple torsion bars 52 are disengaged from the tooth grooves of the sub-gear 42, thereby realizing the reversal of the sub-gear 42. The reversal of the sub-gear 42 causes the multiple torsion bars 52 to move to the tooth groove of the next sub-gear 42 for insertion and fixation.

[0066] Reference Figure 2 、 Figure 3 and Figure 4 The crushing mechanism 3 also includes a cleaning component 6, which is arranged on the body 1 and is used to move the plastic that falls onto the baffle plate 32 toward the material through hole 35. The cleaning component 6 includes multiple cleaning pipes 61 and multiple filter plates 62. At least two cleaning pipes 61 are arranged between two adjacent blades 311, and at least two cleaning pipes 61 are also arranged between the two blades 311 at both ends of the crushing rod 31 and the body 1. The two cleaning pipes 61 are fixedly mounted on the body 1 and obliquely downward through the two guide sections 34. The cleaning pipes 61 are connected to the air source and are used for jetting for cleaning. The direction of the gas ejected from the cleaning pipe 61 intersects with the axis of the stirring rod, so that the gas ejected from the cleaning pipe 61 is used to push the plastic toward the material through hole 35, so that more plastic is crushed.

[0067] Multiple filter plates 62 are arranged in a one-to-one correspondence with multiple cleaning tubes 61. The filter plates 62 are fixedly installed on the cleaning tubes 61, and multiple filter holes for ventilation are evenly opened on the filter plates 62. The filter holes are used to block the entry of plastic fragments, and can make the gas spray out evenly and increase the thrust of the gas.

[0068] Jet pipes are fixedly installed on the machine body 1 and at both ends of the crushing rod 31. The jet pipes are inclined downward toward the upper surface of the baffle plate 32. At the same time, a filter plate 62 is also fixedly installed on the jet pipes. The two jet pipes spray gas to clean the plastic on the baffle plate 32, and when the storage tank 312 is rotated to be aligned with the jet pipes, the gas in the jet pipes can be blown toward the plastic through the storage tank 312 for cleaning, so that more plastic is moved to the through hole 35 for crushing, thereby improving the crushing efficiency and effect, and improving the cleaning effect of the residual plastic in the machine body 1, thereby increasing the service life of the machine body 1.

[0069] The working principle of the embodiment of this application is as follows:

[0070] The input belt 11 conveys the plastic into the machine body 1, and the rotating member 25 drives the two averaging rollers 21 to rotate. The two averaging rollers 21 are used to pre-press and flatten the plastic, and then the plastic falls downward onto the baffle plate 32. The driving member 43 starts to drive the two crushing rods 31 and its multiple blades 311 to rotate. At the same time, the cleaning pipe 61 and the air jet pipe are started to spray at the same time, pushing the plastic to move toward the feed hole 35, so that the plastic is crushed by the blades 311 and enters the baffle box 36. The plastic fragments fall onto the output belt 12 through the discharge hole 38 and are output. The plastic that does not pass through the discharge hole 38 is moved out under the push of the blades 311 and continues to move toward the feed hole 35 under the push of the gas. The output belt 12 outputs the plastic fragments, and when the input belt 11 stops inputting plastic, the cleaning pipe 61 and the air jet pipe continue to spray, and the output belt 12 continues to output plastic fragments, so that all the plastic in the machine body 1 can be removed, thereby improving the crushing efficiency and effect and increasing the life of the machine body 1.

[0071] The driving member 43 drives the driving disc 51, the torsion bar 52 and the pinion 42 to rotate, thereby driving the two crushing rods 31 and multiple blades 311 to rotate. When the accumulation of plastic increases the reaction force on the blades 311, the torsion bar 52 slides on the positioning surface 44 under the action of the torsion, thereby buffering the torsion of the driving member 43 and alleviating the plastic accumulation phenomenon to a certain extent. If the accumulation phenomenon becomes more and more serious, the torsion bar 52 will move out of the tooth groove of the pinion 42, and the pinion 42 will be able to rotate at a certain angle, thereby greatly alleviating the accumulation phenomenon. The torsion bar 52 continues to be inserted and installed on the tooth groove of the next pinion 42 for positioning, thereby reducing the risk of damage to the driving member 43 and further improving the crushing efficiency and effect.

[0072] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An efficient and environmentally friendly plastic recycling crushing device, characterized by: It comprises a machine body (1), an input belt (11), an output belt (12), and a crushing mechanism (3), wherein the crushing mechanism (3) comprises: Two crushing rods (31) are rotatably mounted on the machine body (1), and each crushing rod (31) is provided with a plurality of blades (311) at intervals; A material blocking plate (32) is provided on the machine body (1) and is used to block the passage of plastic and is provided with a plurality of material passage holes (35) for the blades (311) to pass through. The blades (311) on the two crushing rods (31) cooperate with each other to crush the plastic and output it through the material passage holes (35); A driving assembly (4) for driving the two crushing rods (31) to rotate in opposite directions; A cleaning assembly (6) is provided on the machine body (1) and is used to move the plastic that has fallen onto the baffle plate (32) toward the material passage hole (35); The driving assembly (4) comprises: Two main gears (41) are provided on the two crushing rods (31) and mesh with each other; A secondary gear (42) is rotatably mounted on the body (1) and meshes with one of the main gears (41); A driving member (43) is provided on the machine body (1) and is used to drive the secondary gear (42) to rotate; The driving member (43) is provided with a torsion assembly (5) which is inserted and installed on the tooth groove of the secondary gear (42) under the action of elastic force for positioning; The torsion assembly (5) comprises: A drive disc (51) is coaxially arranged on the output shaft of the drive member (43); A plurality of torsion bars (52) are slidably arranged on the driving disk (51) in a direction approaching or moving away from the pinion (42), and the number of the torsion bars is not greater than the number of tooth grooves of the pinion (42). Each of the torsion bars (52) is provided with a spring (53) connected to the driving disk (51). Under the action of the plurality of springs (53), the plurality of torsion bars (52) are inserted into the tooth grooves of the pinion (42) for positioning and realizing that the driving member (43) drives the pinion (42) to rotate.

2. The efficient and environmentally friendly plastic recycling crushing device according to claim 1, characterized in that: The baffle plate (32) comprises a horizontal section (33) in a horizontal state and guide sections (34) located on both sides of the horizontal section (33) and connected to the machine body (1) in an inclined upward direction. The material passage hole (35) is located on the horizontal section (33). The guide section (34) is used to guide the plastic to the material passage hole (35) for crushing.

3. The efficient and environmentally friendly plastic recycling crushing device according to claim 1, characterized in that: The cleaning component (6) comprises: A plurality of cleaning pipes (61) are provided on the machine body (1) and located between two adjacent blades (311) and are used for jet cleaning, wherein the direction of the gas ejected from the cleaning pipes (61) intersects with the axial direction of the crushing rod (31) and causes the plastic on the baffle plate (32) to move toward the material passage hole (35); A plurality of filter plates (62) are respectively arranged on the plurality of cleaning pipes (61) and are used to block the entry of plastic and enable the gas to be ejected evenly.

4. The efficient and environmentally friendly plastic recycling crushing device according to claim 3, characterized in that: A material blocking box (36) is provided on the lower surface of the material blocking plate (32) and is located at the material passage hole (35). The material blocking box (36) is arc-shaped and coaxially arranged with the blade (311). The blade (311) extends into the material blocking box (36) and forms a passage space (37) between the blade (311) and the inner wall of the material blocking box (36) for plastic fragments to pass through. The material blocking box (36) is provided with a plurality of discharge holes (38) for the plastic fragments to pass through at intervals.

5. The efficient and environmentally friendly plastic recycling crushing device according to claim 4, characterized in that: The blade (311) is provided with a plurality of arc-shaped storage troughs (312) extending to the crushing rod (31) and temporarily storing plastics at intervals. The machine body (1) is provided with air jets at opposite ends of the crushing rod (31). The two air jets are used to spray air to drive the plastics to move toward each other and toward the material passage hole (35), and to enable gas to be blown toward the plastics through the storage troughs (312) for cleaning.

6. The efficient and environmentally friendly plastic recycling crushing device according to claim 5, characterized in that: The air injection pipe and the cleaning pipe (61) are both arranged to be inclined downward.

7. The efficient and environmentally friendly plastic recycling crushing device according to claim 1, characterized in that: The machine body (1) is provided with an evenly distributed extrusion mechanism (2), and the evenly distributed extrusion mechanism (2) comprises: Two spreading rollers (21) are rotatably mounted on the machine body (1) and are used to receive the plastic inputted by the input belt (11), perform pre-pressing, and achieve even spreading of the plastic; Two guide plates (22) are arranged on the machine body (1) and are arranged to be tilted downward and are used to guide the plastic to between the two spreading rollers (21); The rotating assembly (23) is arranged on the machine body (1) and is used to drive the two evenly distributing rollers (21) to rotate.

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