Plastic processing plastic particle pulverizer

Abstract

The application provides a plastic processing plastic particle crushing device, and relates to the technical field of plastic recycling. The device comprises a support table, a crushing cylinder, a feeding system, a rotary crushing assembly, a driving assembly, an air tunnel assembly, a fan piece and a filter screen. The application can make the average particle size of the crushing area formed by the outer side of the air tunnel assembly and the inner side of the rotary crushing assembly consistent with the design particle size, so that a large redundancy design is not needed, and the power consumption of the equipment is reduced. The material that is not fully crushed on the filter screen is driven by the airflow in the air tunnel assembly. Compared with the traditional way of crushing again by a moving knife, the gap between the rotary crushing assembly and the crushing cylinder does not have any requirements and can be designed to be greater than 5 cm, so that the damage of the filter screen by the moving knife is avoided, and the filter screen can be used for life without replacement.

Description

Technical Field

[0001] This invention relates to the field of plastic recycling technology, specifically to a plastic granule crushing device for plastic processing. Background Technology

[0002] During the production of plastic products, a large amount of gate and runner residue, as well as defective products, are generated. In order to achieve resource recycling and reduce production costs, these plastic wastes usually need to be crushed and reprocessed into plastic pellets for reuse in the production line.

[0003] Traditional plastic granulator crushing devices break larger pieces of plastic waste into fine particles through the interaction of a high-speed rotating moving blade and a fixed blade. Because the plastic particles move randomly within the chamber, the crushing is not uniform. To ensure that the majority of the crushed material meets the design particle size requirements, a large redundancy design is needed, resulting in high equipment operating costs (to ensure that most of the crushed material is crushed to the design particle size in a single pass, the average crushed particle size during operation needs to be much smaller than the design particle size). Furthermore, material that does not reach the design particle size (accumulating on the filter screen) needs to be picked up again by the moving blade for further crushing. Therefore, the gap between the moving blade and the filter screen cannot be designed to be too large, and the filter screen is easily damaged during long-term use. Therefore, this invention provides a plastic granulator crushing device for plastic processing. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a plastic granulation crushing device for plastic processing, which solves the problems of high labor consumption and easy damage to filter screens in traditional plastic granulation crushing devices.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A plastic granulation device for plastic processing, comprising:

[0007] A support platform consisting of a frame and a top plate;

[0008] The crushing cylinder is fixedly connected to the support platform. The bottom of the crushing cylinder is set as an inclined surface, and a discharge guide is fixedly connected to the side of the crushing cylinder near the bottom.

[0009] A feeding system, wherein the feeding system is fixedly installed at the top of the crushing cylinder;

[0010] A rotary crushing assembly is coaxially and rotatably mounted inside a crushing cylinder, with the inner side of the rotary crushing assembly configured as a crushing section. The rotary crushing assembly is driven to rotate by a drive assembly.

[0011] The wind tunnel assembly and the fan assembly are provided. The wind tunnel assembly is fixedly connected to the center of the crushing cylinder by a mounting shaft and is located inside the rotating crushing assembly. The fan assembly is connected to the wind tunnel assembly by a pipeline and the center of the wind tunnel assembly guides the airflow upward.

[0012] A filter screen is fixedly installed inside the grinding cylinder and located below the rotating grinding assembly. The distance between the filter screen and the bottom of the rotating grinding assembly is not less than 5 cm.

[0013] Preferably, the rotary crushing assembly includes:

[0014] A rotating cylinder, wherein mounting rings are fixedly provided on the outer sides of the top and bottom ends of the rotating cylinder, and a rotating cutting blade is fixedly connected to the inner side of the rotating cylinder;

[0015] The rotating blades are arranged in multiple layers along the axial direction of the rotating cylinder. Each layer has multiple rotating blades arranged in a circular array, and the rotating blades in adjacent layers are staggered.

[0016] Preferably, the driving component includes:

[0017] A ring tooth portion is fixedly installed on the outside of the rotating cylinder, and an arc-shaped opening is provided on the side of the crushing cylinder at a position corresponding to the ring tooth portion;

[0018] The second motor is fixedly mounted on the support platform. A first synchronous pulley is fixedly mounted on the output shaft of the second motor, and a synchronous belt is installed between the first synchronous pulley and the ring tooth part.

[0019] Preferably, the wind tunnel assembly includes:

[0020] The central cylinder has outward tapered portions at both its top and bottom ends. A central frame is fixedly connected to the inner side of the central cylinder near the bottom end. The bottom end of the mounting shaft is fixedly installed at the bottom of the crushing cylinder, and the central frame is fixedly installed at the top end of the mounting shaft by bolts.

[0021] The double-cone guide shell is fixedly connected to the inner side of the central cylinder, and air holes are opened on the upward-facing conical surface of the double-cone guide shell. The outer side of the double-cone guide shell and the inner side of the central cylinder form an air chamber.

[0022] A piping system, which is connected to the air outlet of the fan component and is used to supply air to the air chamber;

[0023] An annular cover is fixedly installed on the outside of the central cylinder, and a fixed cutting blade is fixedly connected to the outside of the annular cover. Multiple layers of fixed cutting blades are arranged along the axial direction of the annular cover. Multiple fixed cutting blades are arranged in annular array in each layer, and the layer positions of the fixed cutting blades are staggered from the layer positions of the rotating cutting blades.

[0024] Preferably, the piping system includes: an annular air duct fixedly installed inside the annular cover and outside the central cylinder; a plurality of branch air ducts arranged in annular array connected between the annular air duct and the air chamber; and an air supply pipeline provided between the annular air duct and the air outlet end of the fan component.

[0025] Preferably, the fan component is fixedly installed at the bottom of the support platform.

[0026] Preferably, the feeding system includes:

[0027] The hopper has a feeding port at the top and the bottom of the hopper is designed to slope towards the horizontal channel. The bottom of the hopper is fixedly connected to the top of the support platform through a support plate.

[0028] The cover is fastened and fixed to the top of the crushing cylinder, and a transverse channel is provided between the cover and the hopper. A feed roller assembly is provided inside the transverse channel.

[0029] Preferably, the feed roller assembly includes:

[0030] A rotating shaft is rotatably mounted on the inside of the transverse channel;

[0031] The blade roller is fixedly mounted on the rotating shaft and is located inside the transverse channel.

[0032] The first motor is fixedly connected to the transverse channel, and the output shaft of the first motor is connected to one end of the rotating shaft through a coupling.

[0033] Preferably, it also includes: a top powder collection system;

[0034] The feed end of the top powder collection system is located above the wind tunnel assembly, the discharge end of the top powder collection system is connected to the side of the crushing cylinder, and the discharge end of the top powder collection system is located below the filter screen.

[0035] Preferably, the top powder collection system includes:

[0036] A hemispherical guide is disposed above the wind tunnel assembly, and a second filter hole is provided on the side of the hemispherical guide;

[0037] The return pipe has its bottom end fixedly connected to the side of the crushing cylinder, and its top end is connected to the top of the hemispherical guide through a V-shaped guide.

[0038] This invention provides a plastic granulation device for plastic processing. It has the following beneficial effects:

[0039] 1. This invention, through the design of wind tunnel components and fan components, provides a stable airflow that is transported through pipes to the interior of the wind tunnel component and blown upwards from the center of the component. Under the Bernoulli effect, the airflow causes insufficiently pulverized material accumulated below the wind tunnel component and on the filter screen to flow upwards through the center of the component, and then undergoes secondary pulverization in the annular pulverization zone formed by the outer side of the wind tunnel component and the inner side of the rotary pulverizer. This structural design ensures that the average particle size of a single pulverization operation within the pulverization zone formed by the outer side of the wind tunnel component and the inner side of the rotary pulverizer matches the designed particle size requirement. The design requires significant redundancy to reduce power consumption. Material that does not meet the design particle size requirements is crushed in the crushing zone formed by the outer side of the wind tunnel assembly and the inner side of the rotary crushing assembly. This material is then blocked by the filter screen and undergoes secondary crushing after passing through the inside of the wind tunnel assembly. Furthermore, this structural design allows the airflow inside the wind tunnel assembly to drive the insufficiently crushed material on the filter screen. Compared to the traditional method of secondary crushing by moving blades, there are no requirements for the gap between the rotary crushing assembly and the crushing cylinder; it can be designed to be greater than 5cm to avoid damage to the filter screen by the moving blades, allowing the filter screen to be used for its entire lifespan without replacement.

[0040] 2. This invention, through the design of a top powder collection system, uses a fan component and a wind tunnel assembly to flow insufficiently crushed material upwards from the center. During this process, some fully crushed material also flows upwards. The feed end of the top powder collection system is located above the wind tunnel assembly to collect this fully crushed material. This material is then guided by the top powder collection system to the area below the filter screen inside the crushing cylinder, where it is discharged from the discharge guide along with the crushed material that has passed through the filter screen. This avoids over-crushing of this material and also reduces the energy consumption of the equipment. Attached Figure Description

[0041] Figure 1 This is a perspective view of a plastic granule crushing device for plastic processing proposed in this invention;

[0042] Figure 2 This is a front view of a plastic granule crushing device for plastic processing proposed in this invention;

[0043] Figure 3 This is a side view of a plastic granule crushing device for plastic processing proposed in this invention;

[0044] Figure 4 This is a top view of a plastic granule crushing device for plastic processing proposed in this invention;

[0045] Figure 5 for Figure 2 Cross-sectional view of section line AA in the middle;

[0046] Figure 6 for Figure 4 A sectional view of the section line at point BB;

[0047] Figure 7 This is a three-dimensional schematic diagram of the crushing cylinder and support platform of a plastic granule crushing device for plastic processing proposed in this invention;

[0048] Figure 8 This is a perspective view of the rotary crushing component and the drive component of a plastic granulation device for plastic processing proposed in this invention.

[0049] Figure 9 This is a perspective view of the rotary crushing component of a plastic granule crushing device for plastic processing proposed in this invention.

[0050] Figure 10 This is a perspective view of a wind tunnel component of a plastic granule crushing device for plastic processing proposed in this invention.

[0051] Figure 11 This is a perspective view of a wind tunnel component of a plastic granule crushing device for plastic processing proposed in this invention.

[0052] Figure 12 This is a 1 / 4 sectional view of the wind tunnel component of a plastic granule crushing device for plastic processing proposed in this invention;

[0053] Figure 13 This is a perspective view of the top powder collection system of a plastic granule crushing device for plastic processing proposed in this invention;

[0054] Figure 14 This is a perspective view of the feeding system of a plastic granule crushing device for plastic processing proposed in this invention;

[0055] Figure 15 This is a perspective view of the feed roller assembly of a plastic granule crushing device for plastic processing proposed in this invention.

[0056] The components include: 1. Feeding system; 101. Hopper; 102. Transverse channel; 103. Cover; 104. Support plate; 105. Feeding roller assembly; 1051. Blade roller; 1052. Rotating shaft; 1053. First motor; 2. Support platform; 3. Drive assembly; 301. Second motor; 302. First synchronous pulley; 303. Synchronous belt; 304. Ring gear; 4. Fan component; 5. Crushing cylinder; 501. Discharge guide; 6. Rotary crushing assembly; 601. Rotary cylinder; 602. Mounting ring platform; 603. Rotating blade; 7. Mounting shaft; 8. Filter screen; 9. Wind tunnel assembly; 901. Central cylinder; 902. Double cone guide shell; 903. Air vent; 904. Central frame; 905. Annular air duct; 906. Branch air duct; 907. Air supply pipeline; 908. Annular cover; 909. Fixed blade; 10. Top powder collection system; 1001. Hemispherical guide; 1002. Second filter hole; 1003. Drainage V-channel; 1004. Return pipe. Detailed Implementation

[0057] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0058] Example 1:

[0059] like Figures 1-15 As shown, this embodiment of the invention provides a plastic granule crushing device for plastic processing, belonging to the field of plastic recycling, and is used to crush recyclable plastics. Specifically, it includes: a support platform 2, a crushing cylinder 5, a feeding system 1, a rotary crushing component 6, a drive component 3, a wind tunnel component 9, a fan component 4, and a filter screen 8.

[0060] The support platform 2 consists of a frame and a top plate. Several sets of rods are fixedly installed / welded to form the frame. The top plate is installed on top of the frame and is used to support the crushing cylinder 5, the feeding system 1, the drive assembly 3, and the fan assembly 4. The crushing cylinder 5 is fixedly connected to the support platform 2. The bottom of the crushing cylinder 5 is designed as an incline. The crushed material that meets the particle size requirements falls to the bottom of the crushing cylinder 5. The incline design can guide the crushed material that meets the particle size requirements. A discharge guide 501 is fixedly connected to the side of the crushing cylinder 5 near the bottom. The discharge guide 501 is used to discharge the crushed material that meets the particle size requirements. The feeding system... The feeding system 1 is fixedly installed at the top of the crushing cylinder 5. The feeding system 1 is used to continuously feed the pre-chopped material into the interior of the crushing cylinder 5. The rotary crushing assembly 6 is coaxially rotatably installed inside the crushing cylinder 5, and the inner side of the rotary crushing assembly 6 is set as the crushing section. The rotary crushing assembly 6 is driven to rotate by the driving assembly 3. The driving assembly 3 drives the rotary crushing assembly 6 to rotate. The crushing section inside the rotary crushing assembly 6 crushes the material passing through the inner side of the rotary crushing assembly 6. The wind tunnel assembly 9 is fixedly connected to the center of the crushing cylinder 5 through the mounting shaft 7. The mounting shaft 7 is used to support the wind tunnel assembly 9. The wind tunnel assembly 9 is located at the center of the rotary crushing assembly 5. The inner side of the wind tunnel component 9 and the outer side of the rotary crushing component 6 form an annular crushing area. The blower component 4 is connected to the wind tunnel component 9 through a pipeline, and the center of the wind tunnel component 9 guides the airflow upward. The blower component 4 is a pressure-stabilizing blower, which generates a stable airflow, which is transported to the interior of the wind tunnel component 9 through the pipeline. Under the guidance of the internal structure of the wind tunnel component 9, the airflow blows upward. During this process, the airflow around the bottom of the wind tunnel component 9 is blown upward under the action of negative pressure airflow (the Bernoulli effect creates a low-pressure area at the bottom of the wind tunnel component 9), thereby carrying the insufficiently crushed flaky material below through the wind tunnel component 9. The material moves upward from the center and is discharged from the top of the wind tunnel assembly 9. It then re-enters the annular crushing area formed by the outer side of the wind tunnel assembly 9 and the inner side of the rotary crushing assembly 6 for secondary crushing. The filter screen 8 is fixedly installed inside the crushing cylinder 5 and is located below the rotary crushing assembly 6. The filter screen 8 is used to screen the material that falls after crushing, so that the plastic fragments that meet the design particle size requirements fall into the bottom of the crushing cylinder 5 and are discharged from the discharge guide 501. The plastic fragments that do not meet the particle size requirements accumulate on the filter screen 8. The distance between the filter screen 8 and the bottom of the rotary crushing assembly 6 is not less than 5cm.

[0061] In this embodiment, the wind tunnel component 9 and the fan component 4 are designed to provide a stable airflow, which is transported through a pipeline to the interior of the wind tunnel component 9 and blown upwards from the center of the wind tunnel component 9. Under the Bernoulli effect, the airflow causes the insufficiently pulverized material accumulated below the wind tunnel component 9 and on the filter screen 8 to flow upwards through the center of the wind tunnel component 9, and then pass through the annular pulverizing area formed by the outer side of the wind tunnel component 9 and the inner side of the rotary pulverizing component 6 for secondary pulverization. This structural design ensures that the average particle size of a single pulverization in the pulverizing area formed by the outer side of the wind tunnel component 9 and the inner side of the rotary pulverizing component 6 is consistent with the design particle size requirement. This design eliminates the need for excessive redundancy, reducing equipment power consumption. Material that does not meet the design particle size requirements is crushed in the crushing zone formed by the outer side of the wind tunnel component 9 and the inner side of the rotary crushing component 6. This material is then blocked by the filter screen 8 and undergoes secondary crushing after passing through the inside of the wind tunnel component 9. The design of this structure allows the insufficiently crushed material on the filter screen 8 to be driven by the airflow inside the wind tunnel component 9. Compared with the traditional method of secondary crushing by moving blades, the gap between the rotary crushing component 6 and the crushing cylinder 5 has no design requirements and can be designed to be greater than 5cm, avoiding damage to the filter screen 8 by the moving blades and allowing the filter screen 8 to be used for its entire life without replacement.

[0062] It is worth noting that the plastic granule crushing device in this embodiment crushes plastic granules that have undergone pre-treatment by slitting, not larger pieces of plastic material.

[0063] In one embodiment, such as Figure 9 As shown, the rotary crushing assembly 6 includes a rotary drum 601 and a rotary cutting blade 603.

[0064] The top and bottom outer sides of the rotating cylinder 601 are fixedly provided with mounting ring platforms 602. Bearings can be installed on the mounting ring platforms 602 and are connected to the inner rotating part of the crushing cylinder 5. In order to ensure that the rotating cylinder 601 and the crushing cylinder 5 have sufficient axial stability, a corresponding limiting ring can also be set inside the crushing cylinder 5. The inner side of the rotating cylinder 601 is fixedly connected with a rotating blade 603. The rotating blade 603 moves and rotates with the rotating cylinder 601 to crush the plastic passing through the inner side of the rotating cylinder 601.

[0065] To further improve the pulverizing effect of the rotary blade 603 and reduce the operating energy consumption of the equipment, such as Figure 9 As shown, multiple layers of rotating blades 603 are arranged along the axial direction of the rotating cylinder 601. Each layer of rotating blades 603 is arranged in a circular array with multiple rotating blades 603, and the rotating blades 603 of adjacent layers are staggered.

[0066] This design of the rotating blade 603 ensures that during the stable medium-speed rotation of the rotating drum 601, the rotating blade 603 can efficiently crush the passing plastic.

[0067] In one embodiment, such as Figure 8 , Figure 9 As shown, the drive assembly 3 includes: a ring tooth portion 304 fixedly disposed on the outside of the rotating cylinder 601, a second motor 301, a first synchronous pulley 302, and a synchronous belt 303.

[0068] The second motor 301 is fixedly mounted on the support platform 2. The first synchronous pulley 302 is fixedly mounted on the output shaft of the second motor 301. An arc-shaped opening is provided on the side of the crushing cylinder 5 at a position corresponding to the ring tooth part 304. A synchronous belt 303 is installed between the first synchronous pulley 302 and the ring tooth part 304. Generally, the arc-shaped opening is used to pass the synchronous belt 303 through. During operation, the second motor 301 drives the first synchronous pulley 302 to rotate, the first synchronous pulley 302 drives the synchronous belt 303 to rotate, and the synchronous belt 303 drives the ring tooth part 304, so that the rotating cylinder 601 rotates synchronously. The first synchronous pulley 302, the synchronous belt 303 and the ring tooth part 304 on the outside of the rotating cylinder 601 constitute a speed reduction (torque increase) transmission, which ensures that the rotating cylinder 601 rotates stably and has sufficient cutting force. The above-mentioned synchronous belt structure design minimizes energy loss during transmission and further reduces the energy consumption of the equipment operation.

[0069] In one embodiment, such as Figures 10-12 As shown, the wind tunnel assembly 9 includes: a central tube 901, a double-cone guide shell 902, a piping system, and an annular cover 908.

[0070] The top and bottom of the central cylinder 901 are both provided with outward-facing conical sections. The conical section at the bottom of the central cylinder 901 is used to guide a larger area of ​​material into the central cylinder 901, while the conical section at the top of the central cylinder 901 is used to guide the material to flow obliquely upwards towards the side. A central frame 904 is fixedly connected to the inner side of the central cylinder 901 near the bottom. The bottom end of the mounting shaft 7 is fixedly installed at the bottom of the crushing cylinder 5, and the central frame 904 is fixedly installed at the top of the mounting shaft 7 by bolts. A double-cone guide shell 902 is fixedly connected to the inner side of the central cylinder 901, and an air hole 903 is opened on the upward-facing conical surface of the double-cone guide shell 902. The outer side of the double-cone guide shell 902 and the inner side of the central cylinder 901 form an air chamber, which is used to temporarily stabilize the airflow. The pipeline system and the fan component 4 are connected to the air outlet. The air end is connected, and the pipeline system is used to supply air to the air chamber. The airflow generated by the fan component 4 enters the air chamber through the pipeline system first. After being stabilized, it blows upward from the air hole 903. The airflow blowing process is stable. The annular cover 908 is fixedly installed on the outside of the central cylinder 901. The annular cover 908 is used to protect the central cylinder 901 and also to avoid the shape of the outside of the central cylinder 901 affecting the crushing. Fixed cutting blades 909 are fixedly connected to the outside of the annular cover 908. Multiple layers of fixed cutting blades 909 are arranged along the axial direction of the annular cover 908. Multiple fixed cutting blades 909 are arranged in a ring array in each layer. The layer position of the fixed cutting blades 909 is staggered from the layer position of the rotating cutting blades 603. The fixed cutting blades 909 and the rotating cutting blades 603 work together to further improve the crushing effect.

[0071] In one embodiment, such as Figure 12 As shown, the piping system includes: an annular air passage 905 fixedly installed inside the annular cover 908 and outside the central cylinder 901; a number of branch air passages 906 arranged in annular array connected between the annular air passage 905 and the air chamber; and an air supply pipe 907 provided between the annular air passage 905 and the air outlet end of the fan component 4.

[0072] The annular air passage 905 is used as a transfer point for airflow, and then several branch air passages 906 distributed in an annular array are used to send the gas into the air chamber, further ensuring the stability of the airflow in the air chamber.

[0073] In one embodiment, the fan component 4 is fixedly installed at the bottom of the support platform 2, making the structural design more reasonable, the mass distribution of the equipment is uniform, and it can be stably placed on a flat ground.

[0074] In one embodiment, such as Figures 14-15 As shown, the feeding system 1 includes: a hopper 101, a cover 103, a transverse channel 102, and a feeding roller assembly 105.

[0075] The top of the hopper 101 is provided with a feeding port for adding materials into the hopper 101. The bottom of the hopper 101 is designed to be inclined towards the transverse channel 102, which can guide the materials to slide down under the action of gravity. The bottom of the hopper 101 is fixedly connected to the top of the support platform 2 through the support plate 104. The support plate 104 is used to support the hopper 101. The cover part 103 is fastened and fixed to the top of the crushing cylinder 5, and a transverse channel 102 is provided between the cover part 103 and the hopper 101. The feed roller assembly 105 is provided inside the transverse channel 102.

[0076] The material inside the hopper 101 is guided by the bottom slope of the hopper 101 into the transverse channel 102. The feed roller assembly 105 works to convey the material forward at a uniform speed. After passing through the transverse channel 102, the material enters the cover section 103 and flows downward from the cover section 103, falling into the crushing cylinder 5 for crushing.

[0077] In one embodiment, such as Figure 15 As shown, the feed roller assembly 105 includes: a rotating shaft 1052, a blade roller 1051, and a first motor 1053.

[0078] The rotating shaft 1052 is rotatably mounted on the inner side of the transverse channel 102, the blade roller 1051 is fixedly mounted on the rotating shaft 1052, and the blade roller 1051 is located on the inner side of the transverse channel 102. The first motor 1053 is fixedly connected to the transverse channel 102, and the output shaft of the first motor 1053 is connected to one end of the rotating shaft 1052 through a coupling.

[0079] When working, the first motor 1053 is powered on, driving the rotating shaft 1052 to rotate, and driving the blade roller 1051 to rotate synchronously. The blades on the side of the blade roller 1051 move the material forward.

[0080] In one embodiment, such as Figure 5 , Figure 6 , Figure 8 As shown, a top powder collection system 10 is also designed, with the feed end of the top powder collection system 10 located above the wind tunnel assembly 9, the discharge end of the top powder collection system 10 connected to the side of the crushing cylinder 5, and the discharge end of the top powder collection system 10 located below the filter screen 8.

[0081] In this embodiment, by designing a top powder collection system 10, the blower component 4 and the wind tunnel component 9 will cause the insufficiently crushed material to flow upward from the center. During this process, some fully crushed material will also flow upward. The feed end of the top powder collection system 10 is located above the wind tunnel component 9 to collect this fully crushed material. The material is then guided by the top powder collection system 10 to the area below the filter screen 8 in the crushing cylinder 5, and discharged from the discharge guide 501 together with the crushed material that has passed through the filter screen 8. This avoids over-crushing of this part of the material and also reduces the energy consumption of the equipment.

[0082] In one embodiment, such as Figure 13 As shown, the top powder collection system 10 includes: a hemispherical guide 1001, a return pipe 1004, and a drainage V-channel 1003.

[0083] A hemispherical guide 1001 is positioned above the wind tunnel assembly 9, and a second filter hole 1002 is provided on the side of the hemispherical guide 1001. Particles meeting the required particle size can enter the interior of the hemispherical guide 1001 through the second filter hole 1002. The bottom of the hemispherical guide 1001 is spherical, allowing material that has not entered the second filter hole 1002 to slide outwards along the bottom of the hemispherical guide 1001. The bottom end of the return pipe 1004 is fixedly connected to the side of the crushing cylinder 5, and the top end of the return pipe 1004 is connected to the top of the hemispherical guide 1001 via a V-channel 1003. The top of 003 is set in a V shape. Part of the airflow will also enter through the second filter hole 1002 on the side of the hemispherical guide 1001. This part of the airflow has less power and carries the crushed material that meets the particle size requirements from the second filter hole 1002 into the interior of the hemispherical guide 1001. It flows obliquely upward to the right along the left slope of the top of the guide V channel 1003, and then flows obliquely downward to the right along the right slope of the top of the guide V channel 1003 into the return pipe 1004. Once it enters the interior of the return pipe 1004, the gravity of the crushed material is downward, and it can pass smoothly through the return pipe 1004.

[0084] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A plastic granule crushing device for plastic processing, comprising: A support platform consisting of a frame and a top plate (2); Its characteristic is that it further includes: The crushing cylinder (5) is fixedly connected to the support platform (2). The bottom of the crushing cylinder (5) is set as an inclined surface, and a discharge guide (501) is fixedly connected to the side of the crushing cylinder (5) near the bottom. Feeding system (1), the feeding system (1) is fixedly installed at the top of the crushing cylinder (5); A rotary crushing assembly (6) is coaxially mounted on the inner side of a crushing cylinder (5), and the inner side of the rotary crushing assembly (6) is configured as a crushing section. The rotary crushing assembly (6) is driven to rotate by a driving assembly (3). The wind tunnel assembly (9) and the fan component (4) are fixedly connected to the center of the crushing cylinder (5) by the mounting shaft (7), and the wind tunnel assembly (9) is located inside the rotating crushing assembly (6). The fan component (4) is connected to the wind tunnel assembly (9) through the pipeline, and the center of the wind tunnel assembly (9) guides the airflow upward. The filter screen (8) is fixedly installed on the inside of the crushing cylinder (5) and is located below the rotating crushing assembly (6). The distance between the filter screen (8) and the bottom of the rotating crushing assembly (6) is not less than 5cm. The rotary crushing assembly (6) includes: A rotating cylinder (601) has mounting rings (602) fixedly installed on the outer sides of its top and bottom ends, and a rotating blade (603) fixedly connected to the inner side of the rotating cylinder (601). The rotating blades (603) are arranged in multiple layers along the axial direction of the rotating cylinder (601). Each layer of the rotating blades (603) is arranged in a ring array with multiple blades (603) and the rotating blades (603) in adjacent layers are staggered. The wind tunnel assembly (9) includes: The center cylinder (901) has an outward tapered part at both the top and bottom. A center frame (904) is fixedly connected to the inner side of the center cylinder (901) near the bottom. The bottom end of the mounting shaft (7) is fixedly installed at the bottom of the crushing cylinder (5). The center frame (904) is fixedly installed at the top of the mounting shaft (7) by bolts. A double-cone guide shell (902) is fixedly connected to the inner side of the central cylinder (901), and an air hole (903) is opened on the upward-facing conical surface of the double-cone guide shell (902). The outer side of the double-cone guide shell (902) and the inner side of the central cylinder (901) form an air chamber. The piping system is connected to the outlet end of the fan component (4) and is used to supply air to the air chamber. An annular cover (908) is fixedly installed on the outside of the central cylinder (901), and a fixed blade (909) is fixedly connected to the outside of the annular cover (908). The fixed blade (909) is arranged in multiple layers along the axial direction of the annular cover (908). Each layer of the fixed blade (909) is arranged in a ring array with multiple layers, and the layer positions of the fixed blade (909) are staggered from the layer positions of the rotating blade (603). The pipeline system includes: an annular air passage (905) fixedly installed inside the annular cover (908) and outside the central cylinder (901); a number of branch air passages (906) arranged in annular array connected between the annular air passage (905) and the air chamber; and an air supply pipeline (907) provided between the annular air passage (905) and the air outlet of the fan component (4).

2. The plastic granule crushing device for plastic processing according to claim 1, characterized in that: The driving component (3) includes: A ring tooth (304) is fixedly installed on the outside of the rotating cylinder (601), and an arc-shaped opening is provided on the side of the crushing cylinder (5) at a position corresponding to the ring tooth (304); The second motor (301) is fixedly mounted on the support platform (2). The output shaft of the second motor (301) is fixedly mounted with a first synchronous pulley (302). A synchronous belt (303) is installed between the first synchronous pulley (302) and the ring tooth part (304).

3. The plastic granule crushing device for plastic processing according to claim 1, characterized in that: The fan component (4) is fixedly installed at the bottom of the support platform (2).

4. The plastic granule crushing device for plastic processing according to claim 1, characterized in that, The feeding system (1) includes: The hopper (101) has a feeding port at the top and the bottom of the hopper (101) is designed to be inclined towards the direction of the transverse channel (102). The bottom of the hopper (101) is fixedly connected to the top of the support platform (2) through the support plate (104). The cover (103) is fastened and fixed to the top of the crushing cylinder (5), and a transverse channel (102) is provided between the cover (103) and the hopper (101). The feed roller assembly (105) is provided inside the transverse channel (102).

5. A plastic granule crushing device for plastic processing according to claim 4, characterized in that, The feed roller assembly (105) includes: A rotating shaft (1052) is rotatably mounted on the inner side of the transverse channel (102); The blade roller (1051) is fixedly mounted on the rotating shaft (1052) and is located inside the transverse channel (102); The first motor (1053) is fixedly connected to the transverse channel (102), and the output shaft of the first motor (1053) is connected to one end of the rotating shaft (1052) via a coupling.

6. A plastic granulation device for plastic processing according to any one of claims 1-5, characterized in that, Also includes: Top powder collection system (10); The feed end of the top powder collection system (10) is located above the wind tunnel assembly (9), the discharge end of the top powder collection system (10) is connected to the side of the crushing cylinder (5), and the discharge end of the top powder collection system (10) is located below the filter screen (8).

7. A plastic granule crushing device for plastic processing according to claim 6, characterized in that, The top powder collection system (10) includes: A hemispherical guide (1001) is disposed above the wind tunnel assembly (9), and a second filter hole (1002) is provided on the side of the hemispherical guide (1001). The bottom end of the return pipe (1004) is fixedly connected to the side of the crushing cylinder (5), and the top end of the return pipe (1004) is connected to the top of the hemispherical guide (1001) through the drainage V-channel (1003), the top of which is set in a V shape.

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