Plastic granulator

Abstract

The invention relates to the field of plastic granulators, and provides a plastic granulator which comprises a stirring barrel, an anti-blocking granulation device, a blade crushing device, a heating device and a controller. The stirring barrel is cylindrical and vertically arranged, the top of the stirring barrel is open, and a plurality of supporting legs are fixed to the bottom of the stirring barrel. And the anti-blocking granulation device is arranged on the stirring barrel. The blade crushing device is arranged at the top of the stirring barrel and is positioned above the anti-blocking granulation device. The heating device is arranged in the side wall of the stirring barrel. And the controller is electrically connected with the anti-blocking granulation device, the heating device and the blade crushing device. According to the plastic granulator, air is exhausted to clean liquid plastic in the extrusion hole, and the technical effect of preventing the plastic granulator from being blocked is achieved.

Description

Technical Field

[0001] The invention relates to the field of plastic granulators, in particular to a plastic granulator. Background Art

[0002] With the widespread application of plastic products and the increasing consumption, plastic waste has gradually become a major problem of environmental pollution and resource waste. The advent of the plastic granulator is to meet this challenge and provide a feasible solution for the recycling of plastic waste. It realizes the recycling of plastic by processing waste plastic into granules, reduces the demand for virgin plastic, and alleviates resource pressure.

[0003] With the improvement of global environmental awareness and the popularization of the concept of sustainable development, governments of various countries have introduced relevant policies to encourage and support the recycling and reuse of plastic waste. As a key equipment for plastic recycling and reuse, plastic granulators have received strong support from policies. These policies have not only promoted the research and development and innovation of plastic granulator technology, but also promoted the expansion of its market and application areas.

[0004] The development of plastic granulator technology has gone through a process from simple to complex, from inefficient to efficient. Early plastic granulators had problems such as high energy consumption, low efficiency, and unstable product quality. With the continuous advancement of science and technology and the improvement of manufacturing processes, modern plastic granulators have made significant progress in structural design, transmission systems, heating and cooling systems, etc. These technological innovations not only improve the production efficiency and product quality of plastic granulators, but also reduce energy consumption and costs, making them more in line with market demand and environmental protection requirements.

[0005] As an important link in the plastic recycling and reuse industry chain, plastic granulators are closely linked to upstream and downstream industries. Upstream industries include the collection, classification, and cleaning of waste plastics; downstream industries include deep processing, injection molding, and blow molding of plastic particles. The development of plastic granulators not only promotes the prosperity of its own industry, but also drives the coordinated development of the entire plastic recycling and reuse industry chain.

[0006] In the prior art, after the plastic granulator completes granulation, some liquid plastic will remain in several extrusion holes, and will cool and solidify over time, firmly adhering to the several extrusion holes, thereby causing blockage of the plastic granulator. Therefore, we provide a plastic granulator. Summary of the invention

[0007] The invention aims to solve the technical problem of how to prevent a plastic granulator from being blocked, and provides a plastic granulator.

[0008] The technical solution adopted by the present invention to solve its technical problem is: A plastic granulator comprises a mixing barrel, an anti-clogging granulating device, a blade crushing device, a heating device, and a controller. The mixing barrel is cylindrical and vertically arranged, the top of the mixing barrel is open, and a plurality of supporting legs are fixed to the bottom of the mixing barrel. The anti-clogging granulating device is arranged on the mixing barrel. The blade crushing device is arranged on the top of the mixing barrel and is above the anti-clogging granulating device. The heating device is arranged in the side wall of the mixing barrel. The controller is electrically connected to the anti-clogging granulating device, the heating device, and the blade crushing device.

[0009] The staff put the waste plastic into the mixing barrel through the opening on the top of the mixing barrel, and then use the controller to control the blade crushing device to crush the waste plastic into waste plastic fragments. The heating device then heat-melts the waste plastic fragments on the lifting plate, and then granulates the liquid plastic through the anti-clogging granulation device.

[0010] Furthermore, the anti-clogging granulation device includes a discharge barrel, a scraper bar, a connecting rod, a lifting plate, a plurality of connecting ports, a plurality of first one-way valves, a second one-way valve, a chute, an extrusion plate, a driven gear, a drive motor, a driving gear, and a cutting blade. The discharge barrel is vertically arranged at the bottom of the mixing barrel, and its axis coincides with the axis of the mixing barrel. The upper end of the discharge barrel is sealed and rotatably connected to the bottom of the mixing barrel, and the rotation axis of the discharge barrel coincides with its own axis. The upper end of the discharge barrel is connected to the inside of the mixing barrel. The scraper bar is a uniform spiral, and its axis is vertically arranged and coincides with the axis of the mixing barrel. The scraper bar is arranged in the mixing barrel and is in close contact with the inner side surface of the mixing barrel. One end of the connecting rod is fixedly connected to the top of the discharge barrel, and the other end is fixedly connected to the bottom of the scraper bar, and the connecting rod is in close contact with the inner bottom surface of the mixing barrel. The lifting plate is arranged horizontally and slidably arranged in the mixing barrel, and its sliding direction is arranged vertically. The side of the lifting plate is in close contact with the inner side surface of the mixing barrel, and a thread groove is arranged on the side of the lifting plate, and the thread groove is tightly threadedly connected to the scraper bar. The chute is vertically arranged on the inner side of the mixing barrel, and a slider is arranged on the slideway in the chute, and the slider is fixedly connected to the lifting plate. A plurality of communication ports are arranged on the lifting plate, and are connected up and down. A plurality of first one-way valves are respectively arranged at the plurality of communication ports. The second one-way valve is arranged in the discharge barrel. The extrusion plate is horizontally arranged below the discharge barrel to cover the lower port of the discharge barrel, and the extrusion plate is fixedly connected to the discharge barrel, and a plurality of extrusion holes are arranged on the extrusion plate. The driven gear is coaxially sleeved outside the discharge barrel and is fixedly connected to the discharge barrel. The driving motor is a forward and reverse motor, which is arranged below the mixing barrel and is fixedly connected to the mixing barrel. The axis of the rotating shaft of the driving motor is vertically arranged, and the driving motor is electrically connected to the controller. The axis of the driving gear coincides with the axis of the rotating shaft of the driving motor, the driving gear is arranged on the side of the driven gear, and meshes with the driven gear, and the driving gear is fixedly connected to the rotating shaft of the driving motor. The cutting blade is arranged horizontally below the extrusion plate and radially along the discharge barrel. The cutting blade is fixedly connected to the stirring barrel through a supporting frame, and the cutting blade is in close contact with the bottom surface of the extrusion plate.

[0011] The staff controls the driving motor to rotate back and forth periodically through the controller. The driving motor rotates forward to drive the driving gear to rotate, and the driving gear drives the driven gear and the discharging barrel to rotate. The discharging barrel drives the extrusion plate, the second one-way valve, the connecting rod, and the scraper to rotate forward. The scraper rotates forward to clean the plastic on the inner wall of the mixing barrel, and drives the lifting plate to descend through the threaded groove. The lifting plate descends to push the air and liquid plastic below, and then the liquid plastic passes through the second one-way valve, the extrusion plate, and several extrusion holes in turn to extrude the strip of liquid plastic. At the same time, the strip of liquid plastic rotates with the extrusion plate, so that the strip of liquid plastic is cut into particles by the cutting blade to realize plastic granulation. When the liquid plastic under the lifting plate is extruded, the air under the lifting plate passes through the second one-way valve, the extrusion plate, and several extrusion holes in turn to clear the liquid plastic in the several extrusion holes, thereby preventing the liquid plastic from clogging the several extrusion holes.

[0012] The driving motor reverses to drive the driving gear to rotate in the opposite direction, and the driving gear drives the driven gear and the discharging barrel to rotate in the opposite direction. The discharging barrel drives the extrusion plate, the connecting rod, and the scraper to rotate in the opposite direction. The scraper rotates in the opposite direction to clean the plastic on the inner wall of the mixing barrel, and drives the lifting plate to rise through the thread groove. The lifting plate rises to generate negative pressure at the bottom, so that the outside air passes through the blade crushing device, the waste plastic fragments and liquid plastic above the lifting plate, the lifting plate, a number of connecting ports, and a number of first one-way valves to enter the bottom of the lifting plate.

[0013] Furthermore, the first one-way valve includes a valve plate and a torsion spring. The valve plate is disposed transversely below the lifting plate, closely attached to the bottom surface of the lifting plate, and closes the corresponding communication port. The side of the valve plate is rotatably connected to the bottom of the lifting plate via a rotating shaft, and its rotation axis is disposed transversely. The torsion spring is sleeved on the rotating shaft of the valve plate, one end of which is fixedly connected to the valve plate, and the other end of which is fixedly connected to the lifting plate.

[0014] When the lifting plate descends, the plurality of valve plates close the plurality of communication ports under the action of the plurality of torsion springs.

[0015] Furthermore, the anti-blocking granulation device includes an electromagnet. The electromagnet is arranged at the bottom of the mixing barrel and is electrically connected to the controller. The valve plates are made of ferromagnetic material.

[0016] When the solid-liquid separation effect of the lifting plate needs to be improved or several connecting ports on the lifting plate need to be cleaned, the staff controls the electromagnet to intermittently open and close through the controller, so that the electromagnet and several torsion springs cooperate to drive several valve plates to intermittently hit the lifting plate, causing the lifting plate to vibrate, thereby improving the solid-liquid separation effect of the lifting plate or cleaning the liquid plastic in several connecting ports on the lifting plate.

[0017] Furthermore, the second one-way valve includes an auxiliary ring, a closing piece, a sliding rod, a reset spring, and a cleaning rod. The axis of the auxiliary ring coincides with the axis of the discharge barrel, and the auxiliary ring is arranged in the discharge barrel and fixedly connected to the discharge barrel. The closing piece is transversely arranged in the discharge barrel, and its axis coincides with the axis of the discharge barrel. The top surface of the closing piece is in close contact with the bottom surface of the auxiliary ring, and the inner ring of the auxiliary ring is closed. The sliding rod is prismatic, and its axis coincides with the axis of the discharge barrel. The sliding rod passes through the extrusion plate, and its upper end is fixedly connected to the closing piece. The reset spring is sleeved outside the sliding rod, between the closing piece and the extrusion plate, and the two ends of the reset spring are connected to the closing piece and the extrusion plate respectively. The cleaning rod is transversely arranged below the extrusion plate and arranged along the radial direction of the discharge barrel, and the cleaning rod is connected to the bottom surface of the extrusion plate. The cutting blade is a double-edged blade.

[0018] When the lifting plate descends, the liquid plastic squeezes the closing piece downward, and the closing piece descends to drive the sliding rod and the cleaning rod to descend, preventing the cleaning rod from affecting the granulation of the cutting blade and compressing the reset spring.

[0019] When the lifting plate rises, the closing piece rises under the action of the reset spring to close the auxiliary ring, thereby preventing the outside airflow from entering the mixing barrel from below. At the same time, the closing piece drives the sliding rod and the cleaning rod to rise, and then the cleaning rod rotates with the extrusion plate to scrape and clean the liquid plastic remaining on the cutting blade.

[0020] Furthermore, the anti-clogging granulation device includes a plurality of stirring rods, which are arranged in the stirring barrel, above the lifting plate and inside the scraper bar, and the plurality of stirring rods are fixedly connected to the scraper bar.

[0021] The scraper drives several stirring rods to rotate and stir the waste plastic fragments in the mixing barrel, thereby improving the hot melting effect of the waste plastic fragments. The lifting plate descends and drives the waste plastic fragments above to descend, and cooperates with several stirring rods to improve the stirring effect and hot melting effect of the waste plastic fragments.

[0022] The discharge barrel drives a plurality of stirring rods to rotate in the opposite direction, and the plurality of stirring rods stir the waste plastic fragments in the mixing barrel, thereby improving the hot melting effect of the waste plastic fragments. The lifting plate drives the waste plastic fragments above to rise, and cooperates with the stirring of the plurality of stirring rods to improve the stirring effect and hot melting effect of the waste plastic fragments.

[0023] Furthermore, the blade crushing device includes a receiving groove, a screening plate, a crushing motor, a plurality of crushing blades, and a plurality of inclined blocks. The receiving groove is annular and is arranged on the inner side of the mixing barrel, and its axis coincides with the axis of the mixing barrel, and the receiving groove is above the scraper. The screening plate is arranged horizontally in the mixing barrel, above the scraper, and the edge of the screening plate is arc-shaped. The edge of the screening plate is movably arranged in the receiving groove, the thickness of the screening plate is less than the thickness of the receiving groove, and the bottom surface of the screening plate is adjacent to the upper end of the scraper. The crushing motor is arranged in the mixing barrel through a support frame, above the screening plate, the axis of the rotating shaft of the crushing motor coincides with the axis of the mixing barrel, and the crushing motor is electrically connected to the controller. A plurality of crushing blades are arranged horizontally in the mixing barrel, above the screening plate, and one end of the plurality of crushing blades is fixedly connected to the rotating shaft of the crushing motor. A plurality of inclined blocks are fixedly arranged on the bottom surface of the screening plate and are evenly arranged around the axis of the mixing barrel. A plurality of inclined blocks are arranged in sequence along the rotation direction of the scraper and cooperate with the upper end of the scraper. A plurality of inclined blocks cooperate with the upper end of the scraper bar, so that the screening plate can be driven to rotate through the inclined blocks when the scraper bar rotates forward, and the screening plate can be driven to tilt through the inclined blocks when the scraper bar rotates reversely.

[0024] The positive rotation of the scraper bar will push the inclined block to rotate around the axis of the mixing barrel. The inclined block drives the screening plate to rotate, and the screening plate drives the waste plastic above to rotate, thereby improving the crushing effect of the crushing blade on the waste plastic and improving the screening effect of the screening plate on the waste plastic fragments.

[0025] The scraper bar rotates in the reverse direction and its upper end will push the inclined block up under the action of the inclined surface of the inclined block, and the inclined block drives the screening plate to tilt. When the scraper bar passes the inclined block, the screening plate will return to the horizontal state under the action of gravity. The scraper bar rotates in the forward direction and pushes several inclined blocks in turn, so that the screening plate will shake in multiple directions. The screening plate drives the waste plastic above to shake, thereby improving the crushing effect of the crushing blade on the waste plastic and improving the screening effect of the screening plate on the waste plastic fragments.

[0026] Furthermore, the blade crushing device includes a push bar, which is fixedly arranged on the top surface of the screening plate and inclined outward along the rotation direction of the screening plate, and the outer end of the push bar extends into the accommodating groove.

[0027] The rotation of the screening plate drives the push bar to rotate, and the push bar pushes the waste plastic fragments in the receiving tank inward.

[0028] Furthermore, the blade crushing device includes a plurality of guide bars, which are arranged on the inner bottom surface of the accommodating groove and inclined inwardly along the rotation direction of the screening plate, and the plurality of guide bars are connected to the bottom surface of the screening plate.

[0029] The rotation of the screening plate drives the waste plastic fragments in the receiving groove and below the screening plate to rotate, so that the waste plastic fragments in the receiving groove fall onto the lifting plate under the guidance of a number of guide bars, thereby cleaning the receiving groove and preventing the waste plastic fragments from jamming the screening plate in the receiving groove.

[0030] Furthermore, the heating device includes a plurality of heating wires, which are arranged in the inner wall of the mixing barrel and around the mixing barrel, and the plurality of heating wires are electrically connected to the controller.

[0031] Beneficial effects of the present invention: 1. The lifting plate descends to push the air and liquid plastic below, and then the liquid plastic passes through the second one-way valve, the extrusion plate, and several extrusion holes in turn to extrude the strip-shaped liquid plastic. At the same time, the strip-shaped liquid plastic rotates with the extrusion plate, so that the strip-shaped liquid plastic is cut into particles by the cutting blade to achieve plastic granulation. When the liquid plastic below the lifting plate is extruded, the air below the lifting plate passes through the second one-way valve, the extrusion plate, and several extrusion holes in turn to spray out, clearing the liquid plastic in the several extrusion holes, thereby preventing the liquid plastic from clogging the several extrusion holes.

[0032] 2. The scraper bar rotates forward to clean the plastic on the inner wall of the mixing barrel, and drives the lifting plate down through the threaded groove, and the lifting plate drives the waste plastic fragments above to fall. The scraper bar rotates reversely to clean the plastic on the inner wall of the mixing barrel, and drives the lifting plate up through the threaded groove, and the lifting plate drives the waste plastic fragments above to rise, and cooperates with the stirring of the two stirring rods to improve the stirring effect and hot melting effect of the waste plastic fragments.

[0033] 3. The upper end of the scraper bar will push the inclined block to rotate around the axis of the mixing barrel when it rotates forward. The inclined block drives the screening plate to rotate, and the screening plate drives the push bar to rotate. The push bar pushes the waste plastic fragments in the receiving tank inward, and the screening plate drives the waste plastic above to rotate, thereby improving the crushing effect of the crushing blade on the waste plastic and improving the screening effect of the screening plate on the waste plastic fragments. At the same time, the rotation of the screening plate drives the waste plastic fragments in the receiving tank to rotate, so that the waste plastic fragments in the receiving tank fall above the lifting plate under the guidance of several guide bars, thereby cleaning the receiving tank and preventing the waste plastic fragments from entering the receiving tank and blocking the screening plate.

[0034] 4. The scraper bar rotates in the opposite direction, and its upper end will push the inclined block up under the action of the inclined surface of the inclined block, and the inclined block drives the screening plate to tilt. When the scraper bar passes through the inclined block, the screening plate will return to the horizontal state under the action of gravity. The scraper bar rotates in the opposite direction and pushes the four inclined blocks in turn, so that the screening plate will shake in multiple directions. The screening plate drives the waste plastic above to shake, thereby improving the crushing effect of the crushing blade on the waste plastic and improving the screening effect of the screening plate on the waste plastic fragments.

[0035] 5. The lifting plate rises and generates negative pressure at the bottom, so that the outside air passes through the screening plate, the waste plastic fragments and liquid plastic above the lifting plate, the lifting plate, several connecting ports, and several valve plates in turn to enter the bottom of the lifting plate. The airflow drives the waste plastic fragments above the screening plate that meet the standards to fall onto the lifting plate through the screening holes of the screening plate, thereby improving the screening effect of the screening plate. The airflow drives several valve plates to rotate, and then the airflow drives the liquid plastic above the lifting plate to pass through several connecting ports and several valve plates to enter the bottom of the lifting plate, thereby improving the solid-liquid separation effect of the lifting plate and preventing several connecting ports from being blocked.

[0036] 6. The cleaning rod rotates with the extrusion plate to automatically scrape and clean the liquid plastic remaining on the cutting blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the overall structure of the plastic granulator.

[0038] Explanation of the reference numerals: 1. stirring barrel; 11. electromagnet; 12. heating wire; 2. discharge barrel; 21. driving motor; 22. driving gear; 23. driven gear; 24. auxiliary ring; 25. closing plate; 26. sliding rod; 27. return spring; 28. extrusion plate; 29. ​​cutting blade; 210. cleaning rod; 211. connecting rod; 212. scraper bar; 213. stirring rod; 3. lifting plate; 31. connecting port; 32. valve plate; 4. screening plate; 41. inclined block; 42. pushing bar; 5. crushing motor; 51. crushing blade. DETAILED DESCRIPTION

[0039] The concept and technical effects of the present invention will be clearly and completely described below in conjunction with embodiments to fully understand the purpose, features and effects of the present invention.

[0040] like Figure 1 As shown, a plastic granulator includes a mixing barrel 1, an anti-clogging granulating device, a blade crushing device, a heating device, and a controller. The mixing barrel 1 is cylindrical and vertically arranged, the top of the mixing barrel 1 is open, and four supporting legs are fixed to the bottom of the mixing barrel 1. The anti-clogging granulating device is arranged on the mixing barrel 1. The blade crushing device is arranged on the top of the mixing barrel 1 and is above the anti-clogging granulating device. The heating device is arranged in the side wall of the mixing barrel 1. The controller is electrically connected to the anti-clogging granulating device, the heating device, and the blade crushing device.

[0041] The staff puts the waste plastic into the mixing barrel 1 through the top opening of the mixing barrel 1, and then controls the blade crushing device through the controller to crush the waste plastic into waste plastic fragments, and then the heating device heat-melts the waste plastic fragments on the lifting plate 3, and then granulates the liquid plastic through the anti-clogging granulation device.

[0042] The anti-clogging granulation device includes a discharge barrel 2, a scraper bar 212, a connecting rod 211, a lifting plate 3, a plurality of communication ports 31, a plurality of first one-way valves, a second one-way valve, a chute, an extrusion plate 28, a driven gear 23, a drive motor 21, a driving gear 22, and a cutting blade 29. The discharge barrel 2 is vertically arranged at the bottom of the mixing barrel 1, and its axis coincides with the axis of the mixing barrel 1. The upper end of the discharge barrel 2 is sealed and rotatably connected to the bottom of the mixing barrel 1, and the rotation axis of the discharge barrel 2 coincides with its own axis. The upper end of the discharge barrel 2 is connected to the inside of the mixing barrel 1. The scraper bar 212 is a uniform spiral shape, and its axis is vertically arranged and coincides with the axis of the mixing barrel 1. The scraper bar 212 is arranged in the mixing barrel 1 and is in close contact with the inner side surface of the mixing barrel 1. One end of the connecting rod 211 is fixedly connected to the top of the discharge barrel 2, and the other end is fixedly connected to the bottom of the scraper bar 212. The connecting rod 211 is in close contact with the inner bottom surface of the mixing barrel 1. The lifting plate 3 is arranged horizontally and slidingly arranged in the mixing barrel 1, and its sliding direction is arranged vertically. The side of the lifting plate 3 is in close contact with the inner side of the mixing barrel 1. A threaded groove is arranged on the side of the lifting plate 3, and the threaded groove is tightly threadedly connected with the scraper 212. The slide groove is arranged vertically on the inner side of the mixing barrel 1, and a slider is arranged on the slideway in the slide groove, and the slider is fixedly connected to the lifting plate 3. A plurality of connecting ports 31 are arranged on the lifting plate 3, and are connected up and down. A plurality of first one-way valves are respectively arranged at the plurality of connecting ports 31. The second one-way valve is arranged in the discharge barrel 2. The extrusion plate 28 is arranged horizontally below the discharge barrel 2 to cover the lower port of the discharge barrel 2. The extrusion plate 28 is fixedly connected to the discharge barrel 2, and a plurality of extrusion holes are arranged on the extrusion plate 28. The driven gear 23 is coaxially sleeved outside the discharge barrel 2 and is fixedly connected to the discharge barrel 2. The driving motor 21 is a forward and reverse motor, which is arranged below the mixing barrel 1 and fixedly connected to the mixing barrel 1. The axis of the rotating shaft of the driving motor 21 is arranged vertically, and the driving motor 21 is electrically connected to the controller. The axis of the driving gear 22 coincides with the axis of the rotating shaft of the driving motor 21. The driving gear 22 is arranged on the side of the driven gear 23 and meshes with the driven gear 23. The driving gear 22 is fixedly connected to the rotating shaft of the driving motor 21. The cutting blade 29 is arranged horizontally below the extrusion plate 28 and is arranged along the radial direction of the discharge barrel 2. The cutting blade 29 is fixedly connected to the mixing barrel 1 through a support frame, and the cutting blade 29 is in close contact with the bottom surface of the extrusion plate 28.

[0043] The staff controls the driving motor 21 to rotate periodically through the controller. The driving motor 21 rotates forward to drive the driving gear 22 to rotate. The driving gear 22 drives the driven gear 23 and the discharging barrel 2 to rotate. The discharging barrel 2 drives the extrusion plate 28, the second one-way valve, the connecting rod 211, and the scraper 212 to rotate forward. The scraper 212 rotates forward to clean the plastic on the inner wall of the mixing barrel 1, and drives the lifting plate 3 to descend through the thread groove. The lifting plate 3 descends to push the air and liquid plastic below, and then the liquid plastic passes through the second one-way valve, the extrusion plate 28, and several extrusion holes in turn to extrude the strip-shaped liquid plastic. At the same time, the strip-shaped liquid plastic rotates with the extrusion plate 28, so that the strip-shaped liquid plastic is cut into particles by the cutting blade 29 to realize plastic granulation. When the liquid plastic below the lifting plate 3 is extruded, the air below the lifting plate 3 passes through the second one-way valve, the extrusion plate 28, and several extrusion holes in turn to spray out, and the liquid plastic in the several extrusion holes is cleared, thereby preventing the liquid plastic from clogging the several extrusion holes.

[0044] The driving motor 21 rotates in reverse to drive the driving gear 22 to rotate in the opposite direction, and the driving gear 22 drives the driven gear 23 and the discharging barrel 2 to rotate in the opposite direction, and the discharging barrel 2 drives the extrusion plate 28, the connecting rod 211, and the scraper 212 to rotate in the opposite direction, and the scraper 212 rotates in the opposite direction to clean the plastic on the inner wall of the mixing barrel 1, and drives the lifting plate 3 to rise through the thread groove. The lifting plate 3 rises to generate negative pressure at the bottom, so that the outside air passes through the blade crushing device, the waste plastic fragments and liquid plastic above the lifting plate 3, the lifting plate 3, the plurality of connecting ports 31, and the plurality of first one-way valves to enter the bottom of the lifting plate 3.

[0045] The first one-way valve includes a valve plate 32 and a torsion spring. The valve plate 32 is disposed transversely below the lifting plate 3, closely attached to the bottom surface of the lifting plate 3, and closes the corresponding communication port 31. The side of the valve plate 32 is rotatably connected to the bottom of the lifting plate 3 via a rotating shaft, and its rotation axis is disposed transversely. The torsion spring is sleeved on the rotating shaft of the valve plate 32, with one end fixedly connected to the valve plate 32 and the other end fixedly connected to the lifting plate 3.

[0046] When the lifting plate 3 descends, the valve plates 32 close the communication ports 31 under the action of the torsion springs.

[0047] The anti-clogging granulation device comprises an electromagnet 11. The electromagnet 11 is arranged at the bottom of the mixing barrel 1, and the electromagnet 11 is electrically connected to the controller. The valve plates 32 are made of ferromagnetic material.

[0048] When the solid-liquid separation effect of the lifting plate 3 needs to be improved or the several connecting ports 31 on the lifting plate 3 need to be cleaned, the staff controls the electromagnet 11 to intermittently open and close through the controller, so that the electromagnet 11 and the several torsion springs cooperate to drive the several valve plates 32 to intermittently hit the lifting plate 3, causing the lifting plate 3 to vibrate, thereby improving the solid-liquid separation effect of the lifting plate 3 or cleaning the liquid plastic in the several connecting ports 31 on the lifting plate 3.

[0049] The second one-way valve includes an auxiliary ring 24, a closing piece 25, a sliding rod 26, a reset spring 27, and a cleaning rod 210. The axis of the auxiliary ring 24 coincides with the axis of the discharge barrel 2. The auxiliary ring 24 is arranged in the discharge barrel 2 and is fixedly connected to the discharge barrel 2. The closing piece 25 is arranged transversely in the discharge barrel 2, and its axis coincides with the axis of the discharge barrel 2. The top surface of the closing piece 25 is in close contact with the bottom surface of the auxiliary ring 24, and the inner circle of the auxiliary ring 24 is closed. The sliding rod 26 is prismatic, and its axis coincides with the axis of the discharge barrel 2. The sliding rod 26 passes through the extrusion plate 28, and its upper end is fixedly connected to the closing piece 25. The reset spring 27 is sleeved outside the sliding rod 26, and is located between the closing piece 25 and the extrusion plate 28. The two ends of the reset spring 27 are connected to the closing piece 25 and the extrusion plate 28 respectively. The cleaning rod 210 is disposed transversely below the extrusion plate 28 and along the radial direction of the discharge barrel 2. The cleaning rod 210 is connected to the bottom surface of the extrusion plate 28. The cutting blade 29 is a double-edged blade.

[0050] When the lifting plate 3 descends, the liquid plastic presses the closing piece 25 downward, and the closing piece 25 descends to drive the sliding rod 26 and the cleaning rod 210 to descend, preventing the cleaning rod 210 from affecting the granulation of the cutting blade 29 and compressing the reset spring 27.

[0051] When the lifting plate 3 rises, the closing piece 25 rises under the action of the return spring 27 to close the auxiliary ring 24, thereby preventing the external airflow from entering the mixing barrel 1 from below. At the same time, the closing piece 25 drives the sliding rod 26 and the cleaning rod 210 to rise, and then the cleaning rod 210 rotates with the extrusion plate 28 to scrape and clean the liquid plastic remaining on the cutting blade 29.

[0052] The anti-clogging granulation device includes two stirring rods 213 , which are arranged in the stirring barrel 1 , above the lifting plate 3 , and inside the scraper 212 , and the two stirring rods 213 are fixedly connected to the scraper 212 .

[0053] The scraper bar 212 drives the two stirring rods 213 to rotate and stir the waste plastic fragments in the stirring barrel 1, thereby improving the hot melting effect of the waste plastic fragments. The lifting plate 3 descends and drives the waste plastic fragments above to descend, and cooperates with the two stirring rods 213 to improve the stirring effect and hot melting effect of the waste plastic fragments.

[0054] The discharge barrel 2 drives the two stirring rods 213 to rotate in the opposite direction, and the two stirring rods 213 stir the waste plastic fragments in the stirring barrel 1, thereby improving the hot melting effect of the waste plastic fragments. The lifting plate 3 drives the waste plastic fragments above to rise, and cooperates with the stirring of the two stirring rods 213 to improve the stirring effect and hot melting effect of the waste plastic fragments.

[0055] The blade crushing device includes a receiving groove, a screening plate 4, a crushing motor 5, two crushing blades 51, and four inclined blocks 41. The receiving groove is annular and is arranged on the inner side of the mixing barrel 1. Its axis coincides with the axis of the mixing barrel 1, and the receiving groove is above the scraper 212. The screening plate 4 is arranged horizontally in the mixing barrel 1, above the scraper 212, the edge of the screening plate 4 is arc-shaped, the edge of the screening plate 4 is movably arranged in the receiving groove, the thickness of the screening plate 4 is less than the thickness of the receiving groove, and the bottom surface of the screening plate 4 is adjacent to the upper end of the scraper 212. The crushing motor 5 is arranged in the mixing barrel 1 through a support frame, above the screening plate 4, the axis of the rotating shaft of the crushing motor 5 coincides with the axis of the mixing barrel 1, and the crushing motor 5 is electrically connected to the controller. Two crushing blades 51 are arranged horizontally in the mixing barrel 1, above the screening plate 4, and one end of the two crushing blades 51 is fixedly connected to the rotating shaft of the crushing motor 5. Four inclined blocks 41 are fixedly arranged on the bottom surface of the screening plate 4 and are evenly arranged around the axis of the mixing barrel 1. The four inclined blocks 41 are arranged in sequence along the rotation direction of the scraper bar 212 and are matched with the upper end of the scraper bar 212. The four inclined blocks 41 are matched with the upper end of the scraper bar 212, so that the screening plate 4 can be rotated by the inclined blocks 41 when the scraper bar 212 rotates forward, and the screening plate 4 can be tilted by the inclined blocks 41 when the scraper bar 212 rotates reversely.

[0056] The scraper bar 212 rotates forwardly and its upper end pushes the inclined block 41 to rotate around the axis of the mixing barrel 1. The inclined block 41 drives the screening plate 4 to rotate, and the screening plate 4 drives the waste plastic above to rotate, thereby improving the crushing effect of the crushing blade 51 on the waste plastic and improving the screening effect of the screening plate 4 on the waste plastic fragments.

[0057] The scraper bar 212 rotates in the reverse direction and its upper end will push the inclined block 41 up under the action of the inclined surface of the inclined block 41, and the inclined block 41 drives the screening plate 4 to tilt. When the scraper bar 212 passes the inclined block 41, the screening plate 4 will return to the horizontal state under the action of gravity. The scraper bar 212 rotates in the forward direction and pushes the four inclined blocks 41 in turn, so that the screening plate 4 will shake in multiple directions. The screening plate 4 drives the waste plastic above to shake, thereby improving the crushing effect of the crushing blade 51 on the waste plastic, and improving the screening effect of the screening plate 4 on the waste plastic fragments.

[0058] The blade crushing device includes a push bar 42, which is fixedly arranged on the top surface of the screening plate 4 and inclined outward along the rotation direction of the screening plate 4, and the outer end of the push bar 42 extends into the receiving groove.

[0059] The rotation of the screening plate 4 drives the pushing bar 42 to rotate, and the pushing bar 42 pushes the waste plastic fragments in the containing groove inward.

[0060] The blade crushing device includes a plurality of guide bars, which are arranged on the inner bottom surface of the accommodating groove and inclined inwardly along the rotation direction of the screening plate 4 , and the plurality of guide bars are connected to the bottom surface of the screening plate 4 .

[0061] The rotation of the screening plate 4 drives the waste plastic fragments in the receiving groove and below the screening plate 4 to rotate, so that the waste plastic fragments in the receiving groove fall onto the lifting plate 3 under the guidance of a plurality of guide bars, thereby cleaning the receiving groove and preventing the waste plastic fragments from jamming the screening plate 4 in the receiving groove.

[0062] The heating device includes a plurality of heating wires 12 . The plurality of heating wires 12 are disposed in the inner wall of the mixing barrel 1 and are disposed around the mixing barrel 1 . The plurality of heating wires 12 are electrically connected to the controller. Working principle: The staff puts the waste plastic into the mixing barrel 1 through the top opening of the mixing barrel 1, and then controls the crushing motor 5 and several heating wires 12 to start through the controller, controls the driving motor 21 to rotate periodically, and the crushing motor 5 drives the two crushing blades 51 to rotate. The two crushing blades 51 crush the waste plastic into waste plastic fragments. The waste plastic fragments that meet the standards fall onto the lifting plate 3 through the screening holes of the screening plate 4, thereby realizing the screening of the waste plastic fragments.

[0063] A plurality of electric heating wires 12 heat-melt the waste plastic fragments on the lifting plate 3. After the waste plastic fragments are heat-melted into liquid plastic, the liquid plastic passes through a plurality of connecting ports 31 and pushes the valve plate 32 downward to rotate, and then falls to the bottom of the mixing barrel 1 and the discharge barrel 2, and is blocked by the closing plate 25 and the auxiliary ring 24, thereby preventing the liquid plastic from leaking out of the plurality of extrusion holes.

[0064] The driving motor 21 rotates forward to drive the driving gear 22 to rotate forward, the driving gear 22 drives the driven gear 23 and the discharging barrel 2 to rotate, and the discharging barrel 2 drives the extrusion plate 28, the auxiliary ring 24, the closing piece 25, the sliding rod 26, the return spring 27, the cleaning rod 210, the connecting rod 211, the scraper bar 212, and the two stirring rods 213 to rotate. The two stirring rods 213 rotate to stir the waste plastic fragments in the mixing barrel 1, thereby improving the hot melting effect of the waste plastic fragments.

[0065] The scraper bar 212 rotates forward to clean the plastic on the inner wall of the mixing barrel 1, and drives the lifting plate 3 to descend through the threaded groove, and the lifting plate 3 drives the waste plastic fragments above to descend, and cooperates with the two stirring rods 213 to improve the stirring effect and hot melting effect of the waste plastic fragments.

[0066] At the same time, the lifting plate 3 descends to push the air and liquid plastic below. At this time, the valve plates 32 close the connecting ports 31 under the action of the torsion springs, and the liquid plastic squeezes the closing plate 25 downward. The closing plate 25 descends to drive the sliding rod 26 and the cleaning rod 210 to descend, preventing the cleaning rod 210 from affecting the granulation of the cutting blade 29 and compressing the reset spring 27. Then the liquid plastic passes through the auxiliary ring 24, the closing plate 25, the extrusion plate 28, and the extrusion holes in turn to extrude the strip of liquid plastic. At the same time, the strip of liquid plastic rotates with the extrusion plate 28, so that the strip of liquid plastic is cut into granules by the cutting blade 29 to achieve plastic granulation. When the liquid plastic below the lifting plate 3 is extruded, the air below the lifting plate 3 passes through the auxiliary ring 24, the closing plate 25, the extrusion plate 28, and the extrusion holes in turn to spray out, clearing the liquid plastic in the extrusion holes, thereby preventing the liquid plastic from clogging the extrusion holes.

[0067] At the same time, the scraper bar 212 rotates forwardly, and its upper end pushes the inclined block 41 to rotate around the axis of the mixing barrel 1. The inclined block 41 drives the screening plate 4 to rotate, and the screening plate 4 drives the push bar 42 to rotate. The push bar 42 pushes the waste plastic fragments in the receiving tank inward, and the screening plate 4 drives the waste plastic above to rotate, thereby improving the crushing effect of the crushing blade 51 on the waste plastic and improving the screening effect of the screening plate 4 on the waste plastic fragments. At the same time, the rotation of the screening plate 4 drives the waste plastic fragments in the receiving tank to rotate, so that the waste plastic fragments in the receiving tank fall above the lifting plate 3 under the guidance of a number of guide bars, thereby cleaning the receiving tank and preventing the waste plastic fragments from entering the receiving tank and jamming the screening plate 4.

[0068] The driving motor 21 reverses and drives the driving gear 22 to rotate in the opposite direction. The driving gear 22 drives the driven gear 23 and the discharging barrel 2 to rotate in the opposite direction. The discharging barrel 2 drives the extrusion plate 28, the auxiliary ring 24, the closing piece 25, the sliding rod 26, the return spring 27, the cleaning rod 210, the connecting rod 211, the scraper bar 212, and the two stirring rods 213 to rotate in the opposite direction. The two stirring rods 213 rotate in the opposite direction to stir the waste plastic fragments in the mixing barrel 1, thereby improving the hot melting effect of the waste plastic fragments.

[0069] The scraper bar 212 rotates in the opposite direction to clean the plastic on the inner wall of the mixing barrel 1, and drives the lifting plate 3 to rise through the threaded groove. The lifting plate 3 drives the waste plastic fragments above to rise, and cooperates with the stirring of the two stirring rods 213 to improve the stirring effect and hot melting effect of the waste plastic fragments.

[0070] At the same time, the lifting plate 3 rises to generate negative pressure at the bottom, so that the outside air passes through the screening plate 4, the waste plastic fragments and liquid plastic above the lifting plate 3, the lifting plate 3, the plurality of connecting ports 31, and the plurality of valve plates 32 in sequence to enter the bottom of the lifting plate 3, and the airflow drives the waste plastic fragments above the screening plate 4 that meet the standards to fall onto the lifting plate 3 through the screening holes of the screening plate 4, thereby improving the screening effect of the screening plate 4. The airflow drives the plurality of valve plates 32 to rotate, and then the airflow drives the liquid plastic above the lifting plate 3 to enter the bottom of the lifting plate 3 through the plurality of connecting ports 31 and the plurality of valve plates 32, thereby improving the solid-liquid separation effect of the lifting plate 3 and preventing the plurality of connecting ports 31 from being blocked.

[0071] At the same time, the closing piece 25 rises under the action of the return spring 27 to close the auxiliary ring 24, thereby preventing the external airflow from entering the mixing barrel 1 from below. At the same time, the closing piece 25 drives the sliding rod 26 and the cleaning rod 210 to rise, and then the cleaning rod 210 rotates with the extrusion plate 28 to scrape and clean the liquid plastic remaining on the cutting blade 29.

[0072] At the same time, the scraper bar 212 rotates in the opposite direction, and its upper end will push the inclined block 41 up under the action of the inclined surface of the inclined block 41, and the inclined block 41 drives the screening plate 4 to tilt. When the scraper bar 212 passes the inclined block 41, the screening plate 4 will return to the horizontal state under the action of gravity, and the scraper bar 212 rotates in the opposite direction to push the four inclined blocks 41 in turn, so that the screening plate 4 will shake in multiple directions, and the screening plate 4 will drive the waste plastic above to shake, thereby improving the crushing effect of the crushing blade 51 on the waste plastic, and improving the screening effect of the screening plate 4 on the waste plastic fragments.

[0073] When the solid-liquid separation effect of the lifting plate 3 needs to be improved or the several connecting ports 31 on the lifting plate 3 need to be cleaned, the staff controls the electromagnet 11 to intermittently open and close through the controller, so that the electromagnet 11 and the several torsion springs cooperate to drive the several valve plates 32 to intermittently hit the lifting plate 3, causing the lifting plate 3 to vibrate, thereby improving the solid-liquid separation effect of the lifting plate 3 or cleaning the liquid plastic in the several connecting ports 31 on the lifting plate 3.

[0074] The above embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative work shall all fall within the scope of protection of the present invention.

Claims

1. A plastic granulator, characterized in that: The invention comprises a mixing barrel (1), an anti-clogging granulating device, a blade crushing device, a heating device, and a controller; the mixing barrel (1) is cylindrical and arranged vertically, the top of the mixing barrel (1) is open, and a plurality of supporting legs are fixed to the bottom of the mixing barrel (1); the anti-clogging granulating device is arranged on the mixing barrel (1); the blade crushing device is arranged on the top of the mixing barrel (1) and is above the anti-clogging granulating device; the heating device is arranged in the side wall of the mixing barrel (1); The controller is electrically connected to the anti-clogging granulating device, the heating device, and the blade crushing device.

2. A plastic granulator according to claim 1, characterized in that: The anti-clogging granulation device comprises a discharge barrel (2), a scraper bar (212), a connecting rod (211), a lifting plate (3), a plurality of communication ports (31), a plurality of first one-way valves, a second one-way valve, a slide groove, an extrusion plate (28), a driven gear (23), a drive motor (21), a driving gear (22), and a cutting blade (29); the discharge barrel (2) is vertically arranged at the bottom of the stirring barrel (1), and its axis coincides with the axis of the stirring barrel (1); the upper end of the discharge barrel (2) is sealed and rotatably connected to the bottom of the stirring barrel (1); the rotation axis of the discharge barrel (2) coincides with its own axis; and the upper end of the discharge barrel (2) is communicated with the interior of the stirring barrel (1); The scraper bar (212) is in a uniform spiral shape, and its axis is arranged vertically and coincides with the axis of the mixing barrel (1). The scraper bar (212) is arranged in the mixing barrel (1) and is in close contact with the inner side surface of the mixing barrel (1); one end of the connecting rod (211) is fixedly connected to the top of the discharge barrel (2), and the other end is fixedly connected to the bottom of the scraper bar (212). The connecting rod (211) is in close contact with the inner bottom surface of the mixing barrel (1); the lifting plate (3) is arranged horizontally and slidably arranged in the mixing barrel (1), and its sliding direction is arranged vertically. The side surface of the lifting plate (3) is in close contact with the inner side surface of the mixing barrel (1), and the side surface of the lifting plate (3) is provided with The thread groove is tightly threadedly connected to the scraper (212); the slide groove is vertically arranged on the inner side of the mixing barrel (1); a slide block is arranged in the slideway of the slide groove; the slide block is fixedly connected to the lifting plate (3); a plurality of the communication ports (31) are arranged on the lifting plate (3) and are connected up and down; a plurality of the first one-way valves are respectively arranged at the plurality of the communication ports (31); the second one-way valve is arranged in the discharge barrel (2); the extrusion plate (28) is horizontally arranged below the discharge barrel (2) to cover the lower port of the discharge barrel (2); the extrusion plate (28) is fixedly connected to the discharge barrel (2); a plurality of the extrusion plates (28) are arranged on the extrusion plate (28); extrusion hole; the driven gear (23) is coaxially sleeved outside the discharge barrel (2) and fixedly connected to the discharge barrel (2); the drive motor (21) is a forward and reverse motor, arranged below the mixing barrel (1) and fixedly connected to the mixing barrel (1), the axis of the rotating shaft of the drive motor (21) is arranged vertically, and the drive motor (21) is electrically connected to the controller; the axis of the driving gear (22) coincides with the axis of the rotating shaft of the drive motor (21), the driving gear (22) is arranged on the side of the driven gear (23) and meshes with the driven gear (23), and the driving gear (22) is fixedly connected to the rotating shaft of the drive motor (21);The cutting blade (29) is disposed transversely below the extrusion plate (28) and along the radial direction of the discharge barrel (2). The cutting blade (29) is fixedly connected to the mixing barrel (1) via a support frame, and the cutting blade (29) is in close contact with the bottom surface of the extrusion plate (28).

3. A plastic granulator according to claim 2, characterized in that: The first one-way valve comprises a valve plate (32) and a torsion spring; the valve plate (32) is transversely arranged below the lifting plate (3), closely attached to the bottom surface of the lifting plate (3), and closes the corresponding connecting port (31); the side of the valve plate (32) is rotatably connected to the bottom of the lifting plate (3) via a rotating shaft, and the rotating axis is transversely arranged; the torsion spring is sleeved on the rotating shaft of the valve plate (32), one end of which is fixedly connected to the valve plate (32), and the other end of which is fixedly connected to the lifting plate (3).

4. A plastic granulator according to claim 3, characterized in that: The anti-clogging granulation device comprises an electromagnet (11); the electromagnet (11) is arranged at the bottom of the stirring barrel (1), and the electromagnet (11) is electrically connected to the controller; and a plurality of the valve plates (32) are made of ferromagnetic material.

5. A plastic granulator according to claim 2, characterized in that: The second one-way valve comprises an auxiliary ring (24), a closing piece (25), a sliding rod (26), a reset spring (27), and a cleaning rod (210); the axis of the auxiliary ring (24) coincides with the axis of the discharge barrel (2); the auxiliary ring (24) is arranged in the discharge barrel (2) and is fixedly connected to the discharge barrel (2); the closing piece (25) is transversely arranged in the discharge barrel (2), the axis of which coincides with the axis of the discharge barrel (2); the top surface of the closing piece (25) is in close contact with the bottom surface of the auxiliary ring (24) to close the inner ring of the auxiliary ring (24); the sliding rod (26) is prismatic, the axis of which coincides with the axis of the discharge barrel (2); The axis of the discharge barrel (2) coincides, the sliding rod (26) passes through the extrusion plate (28), and its upper end is fixedly connected to the closing plate (25); the return spring (27) is sleeved outside the sliding rod (26) and is located between the closing plate (25) and the extrusion plate (28), and the two ends of the return spring (27) are respectively connected to the closing plate (25) and the extrusion plate (28); the cleaning rod (210) is transversely arranged below the extrusion plate (28) and is arranged along the radial direction of the discharge barrel (2), and the cleaning rod (210) is connected to the bottom surface of the extrusion plate (28); the cutting blade (29) is a double-edged blade.

6. A plastic granulator according to claim 2, characterized in that: The anti-clogging granulation device comprises a plurality of stirring rods (213), wherein the plurality of stirring rods (213) are arranged in the stirring barrel (1), above the lifting plate (3) and inside the scraper (212), and the plurality of stirring rods (213) are fixedly connected to the scraper (212).

7. A plastic granulator according to claim 2, characterized in that: The blade crushing device comprises a receiving groove, a screening plate (4), a crushing motor (5), a plurality of crushing blades (51), and a plurality of inclined blocks (41); the receiving groove is annular and is arranged on the inner side surface of the mixing barrel (1), and its axis coincides with the axis of the mixing barrel (1), and the receiving groove is located above the scraper (212); the screening plate (4) is arranged transversely in the mixing barrel (1), and is located above the scraper (212); the edge of the screening plate (4) is arc-shaped, and the edge of the screening plate (4) is movably arranged in the receiving groove; the thickness of the screening plate (4) is less than the thickness of the receiving groove, and the bottom surface of the screening plate (4) is adjacent to the upper end of the scraper (212); the crushing motor (5) The support frame is arranged in the mixing barrel (1) and is located above the screening plate (4). The axis of the rotating shaft of the grinding motor (5) coincides with the axis of the mixing barrel (1). The grinding motor (5) is electrically connected to the controller. A plurality of grinding blades (51) are arranged transversely in the mixing barrel (1) and are located above the screening plate (4). One end of a plurality of grinding blades (51) is fixedly connected to the rotating shaft of the grinding motor (5). A plurality of inclined blocks (41) are fixedly arranged on the bottom surface of the screening plate (4) and are evenly arranged around the axis of the mixing barrel (1). A plurality of inclined blocks (41) are arranged in sequence along the rotation direction of the scraper bar (212) and are matched with the upper end of the scraper bar (212).

8. A plastic granulator according to claim 7, characterized in that The blade crushing device comprises a push bar (42), which is fixedly arranged on the top surface of the screening plate (4) and inclined outwardly along the rotation direction of the screening plate (4), and the outer end of the push bar (42) extends into the accommodating groove.

9. A plastic granulator according to claim 7, characterized in that: The blade crushing device comprises a plurality of guide bars, which are arranged on the inner bottom surface of the accommodating groove and are inclined inwardly along the rotation direction of the screening plate (4), and the plurality of guide bars are connected to the bottom surface of the screening plate (4).

10. A plastic granulator according to claim 1, characterized in that The heating device comprises a plurality of heating wires (12), wherein the plurality of heating wires (12) are arranged in the inner wall of the mixing barrel (1) and are arranged around the mixing barrel (1), and the plurality of heating wires (12) are electrically connected to the controller.

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