Safe and environment-friendly waste plastic regeneration melting granulation equipment

Abstract

The invention belongs to the technical field of plastic recovery, and provides safe and environment-friendly waste plastic regeneration melting granulation equipment which comprises a base, a transfer barrel is fixedly mounted on the base, a feeding screw is rotatably mounted in the transfer barrel, and a first rotating power part for driving the feeding screw to rotate is fixedly mounted at the end of the transfer barrel; one end of the transfer cylinder is connected with a shell, so that the technical problems that in the prior art, under the high-temperature state, the characteristics of plastics are changed, and the mass of plastic particles is reduced are solved, oil liquid is heated through a heating pipe, then waste plastics are put into the oil liquid to be heated and molten, and the waste plastics are heated and molten through the oil liquid; and the waste plastic can be fully contacted with oil liquid for heating, so that the waste plastic hot melting device can be widely applied to hot melting operation scenes of materials.

Description

Technical Field

[0001] The invention belongs to the technical field of plastic recycling, and in particular relates to a safe and environmentally friendly waste plastic recycling melting and granulation device. Background Art

[0002] As people's environmental awareness continues to increase, waste plastics have been well recycled. At present, the recycled waste plastics are generally granulated first, and the granulated waste plastics are used as raw materials to produce products.

[0003] In the process of granulation, the cleaned and dried waste plastics are heated and melted, and the molten waste plastics are extruded through a plastic extruder and pulled into granules. Existing equipment heats and melts waste plastics by contacting them with heat mechanisms such as iron plates. However, since the temperature of the iron plate is difficult to control, the waste plastics absorb the heat of the iron plate after contacting them, which causes the temperature of the iron plate to fluctuate greatly. Under high temperature conditions, the properties of the plastic itself will change and harmful gases will be generated, which reduces the quality of the plastic particles and is not conducive to the health of the workers. Summary of the invention

[0004] The purpose of the present invention is to provide a safe and environmentally friendly waste plastic recycling melting granulation equipment, aiming to solve the technical problem in the prior art that high temperature conditions will cause changes in the properties of the plastic itself and reduce the quality of the plastic particles.

[0005] The present invention is implemented as follows: a safe and environmentally friendly waste plastic recycling melting and granulation equipment includes a base, a transfer cylinder is fixedly installed on the base, a feeding screw is rotatably installed in the transfer cylinder, a first rotating power member that drives the feeding screw to rotate is fixedly installed at the end of the transfer cylinder, one end of the transfer cylinder is connected to a shell, a template for closing the end of the transfer cylinder is provided in the shell, a pelletizer is rotatably installed in the shell, and a second rotating power member that drives the pelletizer to rotate is fixedly installed on the side of the shell, the end of the transfer cylinder away from the shell is connected to a material barrel, the inner diameter of the material barrel gradually decreases toward one side of the transfer cylinder, a filter plate is fixedly installed at one end of the material barrel close to the transfer cylinder, and heating tubes are wound around the outer sides of the material barrel and the transfer cylinder.

[0006] Further technical solution: a filter screen for filtering plastic particles is fixedly installed at the bottom of the shell, a plastic particle outlet is opened at the bottom of the shell, the shell is connected to a circulating oil pump, and the circulating oil pump is connected to the barrel through a circulating pipe.

[0007] Further technical solution: a support plate is fixedly installed on the barrel, a rotating shaft is rotatably installed on the support plate, and a third rotating power component that drives the rotating shaft to rotate is fixedly installed on the support plate, the rotating shaft passes through the filter plate and is rotatably connected to the filter plate, a liquid pushing plate is fixedly installed on the end of the rotating shaft, and when the liquid pushing plate rotates, it pushes part of the oil upward over the filter plate.

[0008] Further technical solution: a coaxially arranged inner cylinder is rotatably installed on the rotating shaft, the inner cylinder is located on the side of the filter plate away from the transfer cylinder, multiple groups of capture boxes are fixedly installed on the end of the inner cylinder close to the filter plate, one side of the capture box is an open structure and multiple groups of through holes are provided on the upper and lower side walls, the side wall of the capture box away from the opening side is an arc structure, a feed trough connected to the capture box is provided on the inner cylinder, and the rotating shaft drives the inner cylinder to rotate through a gear module.

[0009] Further technical solution: A pushing spiral and a filter cartridge located in the inner cylinder are fixedly installed on the rotating shaft. The pushing spiral is located at the bottom of the inner cylinder. When the pushing spiral rotates, it pushes the oil in the inner cylinder to move upward. The filter cartridge is a truncated cone structure with open structures at both ends. The end with the smaller opening of the filter cartridge points to the pushing spiral. Multiple groups of evenly distributed partitions are fixedly installed in the filter cartridge, and multiple groups of first through grooves distributed at intervals are opened on the side wall of the inner cylinder. Both ends of the first through grooves are located on the inner sides of both ends of the filter cartridge.

[0010] Further technical solution: A first guide plate is fixedly installed in the inner cylinder and is located between the filter cylinder and the pushing spiral. The first guide plate is a truncated cone structure with openings at both ends. The smaller end of the first guide plate extends into the filter cylinder, and the end of the first guide plate away from the filter cylinder is fixedly connected to the inner wall of the inner cylinder.

[0011] Further technical solution: two groups of second through grooves are opened on the top of the inner cylinder, two groups of collecting boxes are fixedly installed on the outer side of the top of the inner cylinder by screws, the collecting boxes cover the corresponding second through grooves, and a second guide plate is fixedly installed on the top of the inner cylinder. The second guide plate is a frustum structure with openings at both ends. The smaller end of the second guide plate opening points to the filter cartridge and the end of the second guide plate away from the filter cartridge is fixedly connected to the inner cylinder. The position where the second guide plate is connected to the inner cylinder is flush with the top side of the second through groove.

[0012] Further technical solution: a coaxially arranged outer cylinder is rotatably installed on the outside of the inner cylinder, the outer cylinder is fixedly connected to the barrel, the first through groove is located in the outer cylinder, the outer cylinder is connected to a feed oil pump, the discharge end of the feed oil pump is connected to the barrel and the connection position is located between the filter plate and the transfer barrel.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The oil is heated by a heating tube, and then the waste plastic is put into the oil for heating and melting. The waste plastic is melted by the oil, so that the waste plastic can be melted at a suitable temperature and the waste plastic can be fully in contact with the oil for heating, thereby avoiding temperature runaway during heating, avoiding changes in the properties of the plastic itself caused by high-temperature melting of traditional waste plastics and the generation of harmful gases, and ensuring the quality of the plastic particles. The oil circulates, and the oil and plastic liquid are filtered through the filter plate during the circulation process, thereby reducing the impurity content in the oil and plastic liquid, and further improving the quality of the plastic particles.

[0015] 2. When the shaft rotates, it drives the liquid pushing plate, the material pushing spiral and the filter cylinder to rotate. When the liquid pushing plate rotates, it can push part of the oil above it to flow upward and pass through the filter plate, and then the upward flowing oil can push the impurities on the filter plate to move upward and away from the filter plate. Then, when the capture box rotates, the impurities can enter the capture box from the opening of the capture box, and the oil and molten plastic liquid can flow out from the through holes on the upper and lower side walls of the capture box. Since the side wall of the capture box away from the opening is an arc structure, and the speed of active rotation of the capture box is greater than the speed of oil flow, the oil and impurities enter the capture box and gradually approach the side wall of the capture box away from the opening. The oil will generate thrust on the impurities attached to the side wall of the capture box, further pushing the impurities to move along the side wall of the capture box and finally enter the inner cylinder through the feed trough, thereby realizing the cleaning of impurities on the filter plate and the synchronous collection of impurities, ensuring the filtering and unblocking effect of the filter plate and ensuring the stable flow of oil.

[0016] 3. After the oil and impurities enter the inner cylinder, they flow upward under the action of the push screw. The oil carrying impurities will all enter the filter cylinder under the action of the first guide plate. When the oil moves upward in the filter cylinder, the partition will drive the oil to rotate, and then under the action of centrifugal force, the oil and molten plastic liquid will be thrown out of the filter cylinder. The thrown oil and molten plastic liquid enter the outer cylinder through the first through groove. The impurities in the oil are intercepted by the filter cylinder. The oil and molten plastic liquid in the outer cylinder are extracted by the feed oil pump and transported to the bottom of the filter plate, thereby realizing the separation of impurities from the oil and the molten plastic liquid. The separated oil and molten plastic liquid can be directly transported to the bottom of the filter plate, reducing the filtering pressure of the filter plate and avoiding the molten plastic liquid from adhering to the impurities again, further improving the separation and cleaning effect of impurities and molten plastic liquid;

[0017] 4. Since the filter cartridge is a truncated cone structure with a larger opening at the upper end and an inclined inner wall, the intercepted impurities can continue to rise along the side wall of the filter cartridge under the action of centrifugal force. During the rising process of the impurities, the oil and molten plastic liquid adhering to the surface are separated under the action of centrifugal force, reducing the residual oil and molten plastic liquid on the surface of the impurities, and further improving the separation and cleaning effect of impurities and molten plastic liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is the front view of the present invention.

[0019] Figure 2 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 3 It is a schematic diagram of the structure inside the barrel of the present invention.

[0021] Figure 4It is a schematic diagram of the structure of the outer cylinder in the present invention.

[0022] Figure 5 It is a schematic diagram of the cross-sectional structure of the inner cylinder in the present invention from the first viewing angle.

[0023] Figure 6 It is a schematic cross-sectional structure diagram of the inner cylinder in the present invention from a second viewing angle.

[0024] Figure 7 for Figure 5 A magnified schematic diagram of the A1 region in the middle.

[0025] Figure 8 for Figure 6 A magnified schematic diagram of the A2 region in the middle.

[0026] In the attached drawings: 1. base; 2. transfer cylinder; 3. heating tube; 4. first rotating power part; 5. shell; 6. pelletizer; 7. second rotating power part; 8. filter screen; 9. plastic particle outlet; 10. circulating oil pump; 11. feeding screw; 12. barrel; 13. circulating pipe; 14. filter plate; 15. support plate; 16. third rotating power part; 17. rotating shaft; 18. outer cylinder; 19. inner cylinder; 20. capture box; 21. feed trough; 22. push screw; 23. first guide plate; 24. filter cylinder; 25. partition; 26. second guide plate; 27. first through groove; 28. second through groove; 29. ​​collecting box; 30. unloading oil pump; 31. liquid pushing plate; 32. gear module; 33. template. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0028] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0029] like Figure 1As shown, a safe and environmentally friendly waste plastic recycling melting and granulation equipment provided by the present invention includes a base 1, a transfer cylinder 2 is fixedly installed on the base 1, a feeding screw 11 is rotatably installed in the transfer cylinder 2, a first rotating power member 4 is fixedly installed at the end of the transfer cylinder 2 to drive the feeding screw 11 to rotate, one end of the transfer cylinder 2 is connected to a shell 5, a template 33 is arranged in the shell 5 to close the end of the transfer cylinder 2, a pelletizer 6 is rotatably installed in the shell 5, and a second rotating power member 7 that drives the pelletizer 6 to rotate is fixedly installed on the side of the shell 5, and the end of the transfer cylinder 2 away from the shell 5 is connected to The barrel 12 has an inner diameter which gradually decreases toward the transfer barrel 2. A filter plate 14 is fixedly installed at one end of the barrel 12 close to the transfer barrel 2. A valve is provided on the barrel 12 between the transfer barrel 2 and the filter plate 14. A heating tube 3 is wound around the outer sides of the barrel 12 and the transfer barrel 2. A filter screen 8 for filtering plastic particles is fixedly installed at the bottom of the shell 5. A plastic particle outlet 9 is provided at the bottom of the shell 5. The shell 5 is connected to a circulating oil pump 10. A fine filter is provided at the connection between the shell 5 and the transfer barrel 2. The circulating oil pump 10 is connected to the barrel 12 through a circulating pipe 13.

[0030] In actual application of this embodiment, oil is added to the barrel 12 to make it reach a set liquid level height, and the oil is heated by the heating tube 3. When not in use, the barrel 12 is closed by the valve to prevent the oil from entering the transfer barrel 2, and the waste plastic is put into the barrel 12, and the waste plastic is heated and melted by the hot oil. Since the density of the plastic is greater than the density of the oil, the plastic liquid will move below the oil. During granulation, the feeding screw 11 is driven to rotate by the first rotating power member 4, thereby pushing the oil and plastic liquid in the transfer barrel 2 to move to the template 33. Under the pushing and squeezing of the feeding screw 11, the oil and plastic liquid pass through the template 33, and the oil is further filtered by the fine filter. The plastic liquid solidifies after contacting the air, and is driven by the second rotating power member 7 to The movable pelletizer 6 rotates to pelletize the solidified plastic, and the generated plastic particles fall downward onto the filter screen 8 and leave the housing 5 through the plastic particle outlet 9. The oil gathers at the bottom of the housing 5. The circulating oil pump 10 extracts the oil and transports the oil back to the barrel 12 through the circulating pipe 13, thereby realizing the circulation of the oil. During the circulation of the oil, the oil and the plastic liquid are filtered through the filter plate 14 to reduce the impurity content in the oil and the plastic liquid, which is beneficial to improving the quality of the plastic particles. The waste plastic is melted by heating the oil so that the waste plastic can be melted at a suitable temperature, avoiding the runaway of the heating temperature, avoiding the change of the characteristics of the plastic itself caused by the high-temperature melting of traditional waste plastics and the generation of harmful gases, and ensuring the quality of the plastic particles.

[0031] In an example of the present embodiment, the first rotating power component 4 and the second rotating power component 7 are respectively the first motor and the second motor, and of course they can also be other components such as hydraulic motors that can output rotational power. The first motor drives the feeding screw 11 to rotate, thereby realizing material transportation, and the second motor drives the pelletizer 6 to rotate.

[0032] like Figure 1-Figure 8 As shown, a safe and environmentally friendly waste plastic recycling melting granulation equipment provided by the present invention, a support plate 15 is fixedly installed on the barrel 12, a rotating shaft 17 is rotatably installed on the support plate 15, and a third rotating power member 16 for driving the rotating shaft 17 to rotate is fixedly installed on the support plate 15, the rotating shaft 17 passes through the filter plate 14 and is rotatably connected to the filter plate 14, a liquid pushing plate 31 is fixedly installed on the end of the rotating shaft 17, and when the liquid pushing plate 31 rotates, part of the oil is pushed upward to pass through the filter plate 14.

[0033] Specifically, a coaxially arranged inner cylinder 19 is rotatably installed on the rotating shaft 17. The inner cylinder 19 is located on the side of the filter plate 14 away from the transfer cylinder 2. A plurality of capture boxes 20 are fixedly installed on one end of the inner cylinder 19 close to the filter plate 14. One side of the capture box 20 is an open structure and a plurality of through holes are provided on the upper and lower side walls thereof. The side wall of the capture box 20 away from the open side is an arc-shaped structure. A feed trough 21 connected to the capture box 20 is provided on the inner cylinder 19. The rotating shaft 17 drives the inner cylinder 19 to rotate through the gear module 32.

[0034] Specifically, a pushing screw 22 and a filter cartridge 24 located in the inner cylinder 19 are fixedly mounted on the rotating shaft 17. The pushing screw 22 is located at the bottom of the inner cylinder 19. When the pushing screw 22 rotates, it pushes the oil in the inner cylinder 19 to move upward. The filter cartridge 24 is a truncated cone structure with openings at both ends. The end with the smaller opening of the filter cartridge 24 points to the pushing screw 22. A plurality of groups of evenly distributed partitions 25 are fixedly mounted in the filter cartridge 24. A plurality of groups of first through grooves 27 distributed at intervals are provided on the side wall of the inner cylinder 19. Both ends of the first through grooves 27 are located on the inner sides of both ends of the filter cartridge 24.

[0035] Specifically, a first guide plate 23 is fixedly installed in the inner cylinder 19 and is located between the filter cylinder 24 and the pushing screw 22. The first guide plate 23 is a truncated cone structure with openings at both ends. The smaller end of the first guide plate 23 extends into the filter cylinder 24. The end of the first guide plate 23 away from the filter cylinder 24 is fixedly connected to the inner wall of the inner cylinder 19.

[0036] Specifically, two groups of second through grooves 28 are opened on the top of the inner cylinder 19, and two groups of collecting boxes 29 are fixedly installed on the outer side of the top of the inner cylinder 19 by screws. The collecting boxes 29 cover the corresponding second through grooves 28. A second guide plate 26 is fixedly installed on the top of the inner cylinder 19. The second guide plate 26 is a truncated cone structure with openings at both ends. The smaller open end of the second guide plate 26 points to the filter cartridge 24 and the end of the second guide plate 26 away from the filter cartridge 24 is fixedly connected to the inner cylinder 19. The position where the second guide plate 26 is connected to the inner cylinder 19 is flush with the top side of the second through groove 28.

[0037] Specifically, a coaxially arranged outer cylinder 18 is rotatably installed on the outside of the inner cylinder 19, the outer cylinder 18 is fixedly connected to the barrel 12, the first through groove 27 is located in the outer cylinder 18, the outer cylinder 18 is connected to a feed oil pump 30, the discharge end of the feed oil pump 30 is connected to the barrel 12 and the connection position is located between the filter plate 14 and the transfer barrel 2.

[0038] In actual application of this embodiment, the third rotating power member 16 drives the rotating shaft 17 to rotate, and the rotating shaft 17 drives the inner cylinder 19 to rotate synchronously through the gear module 32. When the inner cylinder 19 rotates, the opening side of the capture box 20 is the front side, and the rotating shaft 17 drives the liquid pushing plate 31, the pushing screw 22 and the filter cylinder 24 to rotate when the rotating shaft 17 rotates. When the liquid pushing plate 31 rotates, it can push part of the oil above it to flow upward and pass through the filter plate 14, and then the upward flowing oil can push the impurities on the filter plate 14 to move upward and away from the filter plate 14, and then when the capture box 20 rotates, the impurities can enter the capture box 20 from the opening of the capture box 20, and the oil and the melted plastic The liquid can flow out from the through holes on the upper and lower side walls of the capture box 20. Since the side wall of the capture box 20 away from the opening is an arc-shaped structure, and the speed of the active rotation of the capture box 20 is greater than the speed of the oil flow, the oil and impurities enter the capture box 20 and gradually approach the side wall of the capture box 20 away from the opening. The oil will generate thrust on the impurities attached to the side wall of the capture box 20, further pushing the impurities to move along the side wall of the capture box 20 and finally enter the inner cylinder 19 through the feed trough 21, thereby realizing the cleaning of impurities on the filter plate 14 and the synchronous collection of impurities, ensuring the filtering and unblocking effect of the filter plate 14, and ensuring the stable flow of the oil;

[0039] After the oil and impurities enter the inner cylinder 19, they flow upward under the action of the push screw 22. The oil carrying impurities will all enter the filter cylinder 24 under the action of the first guide plate 23. When the oil moves upward in the filter cylinder 24, the partition plate 25 will drive the oil to rotate, and then under the action of centrifugal force, the oil and the molten plastic liquid will be thrown out of the filter cylinder 24, and the thrown oil and molten plastic liquid enter the outer cylinder 18 through the first through groove 27. The impurities in the oil are intercepted by the filter cylinder 24, and the oil and molten plastic liquid in the outer cylinder 18 are extracted by the unloading oil pump 30 and transported to the bottom of the filter plate 14, thereby realizing the separation of impurities from the oil and the molten plastic liquid, and the separated oil and molten plastic liquid can be directly transported to the bottom of the filter plate 14, reducing the filtering pressure of the filter plate 14, and avoiding the molten plastic liquid from adhering to the impurities again, further improving the separation and cleaning effect of impurities and molten plastic liquid;

[0040] Since the filter cartridge 24 is a truncated cone structure with a larger opening at the upper end and an inclined inner wall, the intercepted impurities can continue to rise along the side wall of the filter cartridge 24 under the action of centrifugal force. During the rising process of the impurities, the oil and molten plastic liquid adhered to the surface are separated under the action of centrifugal force, reducing the residual oil and molten plastic liquid on the surface of the impurities, further improving the separation and cleaning effect of the impurities and the molten plastic liquid. Finally, the impurity particles separate from the filter cartridge 24 upward, and the impurities contact and collide with the second guide plate 26 and enter the collection box 29 through the second through groove 28, completing the collection of impurities. When not in use, the collection box 29 can be removed to clean the impurities inside.

[0041] In one embodiment of the present invention, the gear module 32 includes a mounting shaft rotatably mounted on the outer cylinder 18, on which two sets of gears are fixedly mounted. The two sets of gears are respectively meshed with gears fixedly mounted on the inner cylinder 19 and the rotating shaft 17. By setting the number of teeth of the gear set, the rotation speed of the inner cylinder 19 is smaller than the rotation speed of the rotating shaft 17.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0043] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A safe and environmentally friendly waste plastic recycling melting and granulation device, comprising a base (1), characterized in that: A transfer cylinder (2) is fixedly mounted on the base (1), a feeding screw (11) is rotatably mounted in the transfer cylinder (2), a first rotating power member (4) for driving the feeding screw (11) to rotate is fixedly mounted at the end of the transfer cylinder (2), one end of the transfer cylinder (2) is connected to a shell (5), a template (33) for sealing the end of the transfer cylinder (2) is arranged in the shell (5), a pelletizing knife (6) is rotatably mounted in the shell (5), and a second rotating power member (7) for driving the pelletizing knife (6) to rotate is fixedly mounted on the side of the shell (5), the end of the transfer cylinder (2) away from the shell (5) is connected to a material cylinder (12), the inner diameter of the material cylinder (12) gradually decreases towards one side of the transfer cylinder (2), a filter plate (14) is fixedly mounted in the end of the material cylinder (12) close to the transfer cylinder (2), and a heating pipe (3) is wound around the outer side of the material cylinder (12) and the transfer cylinder (2).

2. A safe and environmentally friendly waste plastic regeneration melting and granulation equipment according to claim 1, characterized in that: A filter screen (8) for filtering plastic particles is fixedly installed at the bottom of the shell (5), a plastic particle outlet (9) is provided at the bottom of the shell (5), and the shell (5) is connected to a circulating oil pump (10), which is connected to the barrel (12) through a circulating pipe (13).

3. A safe and environmentally friendly waste plastic regeneration melting and granulation equipment according to claim 1, characterized in that: A support plate (15) is fixedly mounted on the barrel (12), a rotating shaft (17) is rotatably mounted on the support plate (15), and a third rotating power member (16) is fixedly mounted on the support plate (15) for driving the rotating shaft (17) to rotate, the rotating shaft (17) penetrates the filter plate (14) and is rotatably connected to the filter plate (14), a liquid pushing plate (31) is fixedly mounted on the end of the rotating shaft (17), and when the liquid pushing plate (31) rotates, part of the oil is pushed upward to pass through the filter plate (14).

4. A safe and environmentally friendly waste plastic regeneration melting and granulation equipment according to claim 3, characterized in that: A coaxially arranged inner cylinder (19) is rotatably mounted on the rotating shaft (17). The inner cylinder (19) is located on a side of the filter plate (14) away from the transfer cylinder (2). A plurality of groups of capture boxes (20) are fixedly mounted on one end of the inner cylinder (19) close to the filter plate (14). One side of the capture box (20) is an open structure and a plurality of groups of through holes are provided on the upper and lower side walls. The side wall of the capture box (20) away from the open side is an arc-shaped structure. A feed trough (21) connected to the capture box (20) is provided on the inner cylinder (19). The rotating shaft (17) drives the inner cylinder (19) to rotate via a gear module (32).

5. A safe and environmentally friendly waste plastic regeneration melting and granulation equipment according to claim 4, characterized in that: A pushing screw (22) and a filter cartridge (24) located in the inner cylinder (19) are fixedly mounted on the rotating shaft (17). The pushing screw (22) is located at the bottom of the inner cylinder (19). When the pushing screw (22) rotates, the oil in the inner cylinder (19) is pushed to move upward. The filter cartridge (24) is a truncated cone structure with both ends being open. The end of the filter cartridge (24) with a smaller opening points to the pushing screw (22). A plurality of evenly distributed partitions (25) are fixedly mounted in the filter cartridge (24). A plurality of first through grooves (27) distributed at intervals are provided on the side wall of the inner cylinder (19). Both ends of the first through grooves (27) are located on the inner sides of both ends of the filter cartridge (24).

6. A safe and environmentally friendly waste plastic recycling melting and granulation equipment according to claim 5, characterized in that: A first guide plate (23) is fixedly installed in the inner cylinder (19) and is located between the filter cylinder (24) and the push screw (22). The first guide plate (23) is a truncated cone structure with openings at both ends. The end with the smaller opening of the first guide plate (23) extends into the filter cylinder (24). The end of the first guide plate (23) away from the filter cylinder (24) is fixedly connected to the inner wall of the inner cylinder (19).

7. A safe and environmentally friendly waste plastic recycling melting and granulation equipment according to claim 6, characterized in that: Two groups of second through grooves (28) are provided at the top of the inner cylinder (19); two groups of collecting boxes (29) are fixedly installed on the outer side of the top of the inner cylinder (19) by screws; the collecting boxes (29) cover the corresponding second through grooves (28); a second guide plate (26) is fixedly installed on the top of the inner cylinder (19); the second guide plate (26) is a truncated cone structure with openings at both ends; the smaller end of the opening of the second guide plate (26) points to the filter cylinder (24); the end of the second guide plate (26) away from the filter cylinder (24) is fixedly connected to the inner cylinder (19); the position where the second guide plate (26) is connected to the inner cylinder (19) is flush with the top side of the second through groove (28).

8. A safe and environmentally friendly waste plastic recycling melting and granulation equipment according to claim 7, characterized in that: An outer cylinder (18) arranged coaxially is rotatably mounted on the outer side of the inner cylinder (19); the outer cylinder (18) is fixedly connected to the barrel (12); the first through groove (27) is located in the outer cylinder (18); the outer cylinder (18) is connected to a feed oil pump (30); the discharge end of the feed oil pump (30) is connected to the barrel (12) and the connection position is located between the filter plate (14) and the transfer barrel (2).

Images