Recycled plastic particle preheating equipment

Abstract

The invention belongs to the technical field of regenerated plastic particle processing, and particularly relates to regenerated plastic particle preheating equipment which comprises a smashing area, a heating area and a discharging area, the heating area is arranged at the top of the discharging area, and the smashing area is arranged at the top of the heating area. The meshing parts are symmetrically arranged on the two sides of the inner wall of the control box. Each meshing part is provided with a switching motor, a guide plate shell, a traction pull plate, a torque motor and a smashing roller shaft. As the crushing roll shafts on the two sides can be blocked or passivated due to the fact that plastic particles are blocked in gaps during continuous working, after crushing work is carried out for a period of time, the motor is switched to turn the crushing roll shafts on the two sides, and the crushing roll shaft without attached plastic residues on the other side is used for continuously carrying out crushing work; therefore, the continuous working time of the device is prolonged, and meanwhile the problem that the crushing roller shaft is passivated and stuck is avoided.

Description

Technical Field

[0001] This invention belongs to the field of recycled plastic pellet processing technology, specifically a recycled plastic pellet preheating device. Background Technology

[0002] Recycled plastic pellets fall under the category of plastic pellets. Recycled plastic is produced by recycling used new materials or waste plastics through a screw press, and then cutting them into pellets using a pelletizer. In the production of plastic pellets, the waste plastic needs to be heated to a molten state. The waste plastic needs to be preheated by the hot water generated during the cooling process of plastic pellet processing, and a preheating device is required.

[0003] A preheating device for processing recycled plastic granules, with publication number CN115582936A, crushes falling plastic through a first and second crushing roller. By crushing the material, the contact area between the material and hot water is increased, facilitating preheating. However, this device is difficult to process large quantities of plastic. When the first and second crushing rollers operate continuously, plastic granules may get stuck in the gap, causing jamming or passivation problems. Therefore, improvements are needed. Summary of the Invention

[0004] To address the problem that existing crushing rollers cannot operate continuously, the technical solution adopted in this invention is: a preheating device for recycled plastic granules, comprising a crushing zone, a heating zone, and a discharge zone, wherein the heating zone is located above the discharge zone, and the crushing zone is located above the heating zone. The crushing zone includes a control box and a biting component, the biting component being symmetrically arranged on both sides of the inner wall of the control box: The engagement component includes a switching motor, a guide plate housing, a traction pull plate, a torque motor, and a crushing roller shaft; The two ends of the crushing roller shaft are respectively inserted into the outer surfaces of the torque motor shafts on both sides, the outer surface of the torque motor housing is inserted into the end of the traction plate away from the guide plate housing, and the outer surface of the switching motor housing is inserted into the inner wall of the control box. The outer surface of the switching motor turntable is inserted into the outer surface of the guide plate shell via a plug rod, and the outer surface of the traction plate is slidably connected to the inner wall of the guide plate shell. The switching motor rotates the crushing roller shafts on both sides around the axis of the switching motor by twisting the guide plate shell. The crushing roller shafts on both sides near the middle of the device mesh with each other.

[0005] Furthermore, the engaging component also includes: The pressure control plate is inserted into the middle of the inner cavity of the guide plate shell through a slot, and both the upper and lower ends of the pressure control plate extend to the outside of the guide plate shell. After the pressure control plate pressurizes the inside of the guide plate shell, it can push open the traction plates on both sides of the guide plate shell, thereby making the crushing rollers on both sides of the middle part interlock. After the crushing rollers in the middle part are pulled apart, the crushing rollers on both sides can be rotated by rotating the guide plate shell.

[0006] Furthermore, the crushing zone also includes: The heat-compensating top plate is symmetrically installed on both sides of the upper part of the control box cavity via slots; A guide top plate, the bottom of which is inserted into the axis at the top of the control box cavity; The discharge ramp is located at the bottom of the control box cavity; The control panel is located on the front of the outer surface of the control box; The blower component is located inside the engagement component.

[0007] Furthermore, the blower component includes: A butterfly-shaped blower box, wherein windproof baffles are symmetrically arranged on both sides of the butterfly-shaped blower box; The outer surface of the butterfly-shaped blower box is symmetrically provided with air inlet slots on both sides, and the outer surface of the butterfly-shaped blower box is symmetrically provided with exhaust holes on both sides near the windshield. The outer surface of the butterfly-shaped blower box is connected to the outer surface of the guide plate shell by anchoring rods.

[0008] Furthermore, the heating zone includes: An insulated box, the top of which is inserted into the lower surface of the control box; The contents storage box has spring connecting plates symmetrically inserted on both sides of the top of the inner cavity of the contents storage box, and the top of the spring connecting plates is inserted into the lower surface of the control box. Internal heating plates are symmetrically arranged on both sides of the inner cavity of the inner storage box; The water supply hose is inserted into the inner cavity of the inner container through the drain port, and the end of the water supply hose away from the inner container extends to the outside of the insulated box.

[0009] Furthermore, the heating zone also includes: A closed bottom plate is symmetrically set at the bottom of the inner cavity of the contents storage box, and the side of the closed bottom plate is rotatably connected to a joint pivot. An external control connecting plate, wherein the outer surface of the external control connecting plate's rotating shaft is inserted into the inner cavity of the joint rotating shaft, and the outer surface of the outer shell of the external control connecting plate is snapped into the outer surface of the inner storage box; An elliptical roller shaft is formed by pressing its outer surface against the outer surface of the inner container. Both ends of the elliptical roller shaft are connected to built-in motors, and the outer surface of the built-in motor housing is connected to the inner wall of the insulated box. When the built-in motor controls the rotation of the elliptical roller shaft, the elliptical roller shaft will cooperate with the upper spring connecting plate to drive the inner container to oscillate in the vertical direction.

[0010] Furthermore, the emission zone includes: The bottom cylinder is connected to the bottom of the insulated box through a through-hole; A filter screen, the outer surface of which is inserted into the inner cavity of the holding bottom cylinder through an annular groove.

[0011] Furthermore, the emission zone also includes: The rotating chassis is fitted with the bottom of the inner wall of the holding cylinder by rotating the outer surface of the chassis. The inner cylinder is inserted into the center of the rotating chassis cavity at its outer surface, and a traction rod is slidably connected to the inner wall of the inner cylinder. The sliding diaphragm is inserted into the top of the traction rod at the axis of its inner wall, and its outer surface is slidably connected to the inner wall of the storage bottom cylinder. The storage inner cylinder can move the sliding diaphragm vertically by retracting the traction rod to fit against the storage bottom cylinder.

[0012] The beneficial effects of this invention are as follows: 1. This device uses meshing crushing rollers on both sides to crush waste plastic fed from the top guide plate into plastic particles. The refined plastic particles are then preheated in the heating zone with hot water. Because the crushing rollers on both sides may get stuck or become dull due to plastic particles getting stuck in the gaps during continuous operation, after a period of crushing, the switching motor will rotate the crushing rollers on both sides and use the crushing roller on the other side without plastic residue to continue the crushing work. This extends the continuous working time of the device and avoids the problem of crushing roller dulling and getting stuck.

[0013] 2. During the rotation of the crushing roller shaft, the butterfly-shaped blower box located between the two guide plates blows concentrated air through the exhaust holes onto the plastic particles adhering to the outer surface of the crushing roller shaft. Combined with the centrifugal force of the torque motor rotating the crushing roller shaft, the plastic particles can be quickly separated from the outer surface of the crushing roller shaft and recycled into the heat preservation box for processing under the guidance of gravity. Therefore, plastic particles will not accumulate inside the control box, and the crushing roller shaft will still have an effective crushing effect after the next rotation due to timely cleaning, thereby extending the service life of the device.

[0014] 3. When the plastic granules are preheated inside the inner container, the elliptical roller located outside the inner container will be driven by the built-in motor and work with the spring connecting plate to make the inner container vibrate vertically. This causes the plastic granules and hot water inside to oscillate, causing the granules gathered at the bottom of the inner container to disperse. This avoids the problem of uneven heating or even clumping caused by the granules gathering due to gravity.

[0015] 4. After preheating, the plastic granules are placed inside the bottom cylinder. The hot water and granules are separated by a filter screen. Then, during the rotation of the sliding diaphragm, the plastic granules will be dried off by the centrifugal force and further dispersed as the sliding diaphragm moves up and down. This not only eliminates water stains on the outer surface of the granules under the heat preservation condition using the heating effect of the internal heating plate, but also avoids the problem of granules sticking together due to the drying of water stains. Attached Figure Description

[0016] Figure 1 This is the front view of the present invention; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a cross-sectional view of the crushing zone of the present invention; Figure 4 This is a schematic diagram of the structure of the interlocking component of the present invention; Figure 5 This is a schematic diagram of the structure of the blower component of the present invention; Figure 6 This is a cross-sectional view of the heating zone of the present invention; Figure 7 This is a cross-sectional view of the emission area of ​​the present invention.

[0017] In the diagram: 1. Crushing zone; 2. Heating zone; 3. Discharge zone; 11. Control box; 12. Compensating top plate; 13. Guide top plate; 14. Control panel; 15. Discharge inclined rail; 4. Engaging component; 5. Blower component; 41. Pressure control plate; 42. Guide plate shell; 43. Traction pull plate; 44. Crushing roller shaft; 45. Torque motor; 46. Switching motor; 51. Butterfly-shaped blower box; 52. Air inlet slot; 53. Exhaust port; 54. Anchoring rod; 21. Insulation box; 22. Inner storage box; 23. Spring connecting plate; 24. Inner heating plate; 25. Enclosed bottom plate; 26. Joint shaft; 27. External control connecting plate; 28. Built-in motor; 29. ​​Elliptical roller shaft; 31. Storage bottom cylinder; 32. Filter screen; 33. Sliding diaphragm; 34. Traction connecting rod; 35. Inner storage cylinder; 36. Rotating chassis. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

[0019] Example 1, please refer to Figures 1-5 The present invention provides a technical solution: a preheating device for recycled plastic pellets, comprising a crushing zone 1, a heating zone 2, and a discharge zone 3, wherein the heating zone 2 is located on top of the discharge zone 3, and the crushing zone 1 is located on top of the heating zone 2. The pulverizing zone 1 includes a control box 11 and a biting component 4, which are symmetrically arranged on both sides of the inner wall of the control box 11. The biting component 4 includes a switching motor 46, a guide plate housing 42, a traction pull plate 43, a torque motor 45, and a crushing roller shaft 44; The two ends of the crushing roller shaft 44 are respectively inserted into the outer surface of the rotating shaft of the torque motor 45 on both sides. The outer surface of the housing of the torque motor 45 is inserted into the end of the traction plate 43 away from the guide plate housing 42. The outer surface of the housing of the switching motor 46 is inserted into the inner wall of the control box 11. The outer surface of the switching motor 46 turntable is inserted into the outer surface of the guide plate shell 42 via a plug rod, and the outer surface of the traction plate 43 is slidably connected to the inner wall of the guide plate shell 42. The switching motor 46 rotates the crushing roller shafts 44 on both sides around the axis of the switching motor 46 by twisting the guide plate shell 42. The crushing roller shafts 44 near the middle of the device of the two sides of the biting parts 4 bite each other.

[0020] The occlusal component 4 also includes: The pressure control plate 41 is inserted into the middle of the inner cavity of the guide plate shell 42 through a slot, and both the upper and lower ends of the pressure control plate 41 extend to the outside of the guide plate shell 42. After the pressure control plate 41 pressurizes the inside of the guide plate shell 42, it can push open the traction plates 43 on both sides of the guide plate shell 42, so that the crushing roller shafts 44 on both sides of the middle can be engaged with each other. After the crushing roller shafts 44 in the middle are pulled apart, the crushing roller shafts 44 on both sides can be rotated by rotating the guide plate shell 42.

[0021] Crushing zone 1 also includes: The supplementary heating plate 12 is symmetrically arranged on both sides of the upper part of the inner cavity of the control box 11 through slots; The bottom of the guide plate 13 is inserted into the axis at the top of the inner cavity of the control box 11; The discharge inclined rail 15 is located at the bottom of the inner cavity of the control box 11; Control panel 14 is located on the front of the outer surface of control box 11; The blower component 5 is located inside the engagement component 4.

[0022] Blower component 5 includes: The butterfly-shaped blower box 51 has windproof baffles symmetrically arranged on both sides. The outer surface of the butterfly-shaped blower box 51 is symmetrically provided with air inlet slots 52 on both sides, and the butterfly-shaped blower box 51 is symmetrically provided with exhaust holes 53 on both sides near the windshield. The outer surface of the butterfly-shaped blower box 51 is connected to the outer surface of the guide plate shell 42 by anchoring rods 54.

[0023] The hot water, heated by the inner heating plate 24, is discharged into the storage box 22 in the heating zone 2 to preheat the plastic.

[0024] After a period of crushing work, a large amount of plastic debris will get stuck in the gap between the crushing rollers 44 connected by the two interlocking parts 4, which will lead to an increase in the torsional load of the torque motor 45 and a decrease in the biting force of the crushing rollers 44. At this time, the pressure control plate 41 will draw pressure on the inside of the guide plate shell 42, causing the traction plates 43 on both sides to retract into the inside of the guide plate shell 42. At this time, the crushing rollers 44 on both sides in the middle will separate. Then, the switching motors 46 of the two interlocking parts 4 will rotate the crushing rollers 44 on both sides by twisting the guide plate shell 42, and then re-engage the crushing rollers 44 on both sides in the middle.

[0025] During the rotation of the guide plate shell 42, the butterfly-shaped blower box 51 located in the outer shell blows air onto the replaced crushing roller shaft 44 through its exhaust port 53. Combined with the centrifugal force generated by the rotation of the crushing roller shaft 44 and the centrifugal force generated by the guide plate shell 42, the debris on the outer surface of the crushing roller shaft 44 is detached and further recycled into the interior of the heating zone 2 along the discharge inclined rail 15 at the bottom.

[0026] Example 2, please refer to Figures 1-7 The present invention provides a technical solution: based on embodiment 1, the heating zone 2 includes: The top of the insulated box 21 is inserted into the lower surface of the control box 11; Content storage box 22, with spring connecting plates 23 symmetrically inserted on both sides of the top of the inner cavity of the content storage box 22, and the top of the spring connecting plates 23 being inserted into the lower surface of the control box 11. Internal heating plates 24 are symmetrically arranged on both sides of the inner cavity of the inner storage box 22; The water supply hose is inserted into the inner cavity of the inner container 22 through the drain port, and the end of the water supply hose away from the inner container 22 extends to the outside of the insulated box 21.

[0027] Heating zone 2 also includes: A closed bottom plate 25 is symmetrically arranged at the bottom of the inner cavity of the contents storage box 22, and the side of the closed bottom plate 25 is rotatably connected to a joint pivot 26. The outer surface of the external control plate 27 is inserted into the inner cavity of the joint shaft 26, and the outer surface of the outer shell of the external control plate 27 is snapped into the outer surface of the inner storage box 22. The outer surface of the elliptical roller 29 is pressed against the outer surface of the inner container 22. Both ends of the elliptical roller 29 are connected to a built-in motor 28, and the outer surface of the housing of the built-in motor 28 is connected to the inner wall of the insulation box 21. When the built-in motor 28 controls the rotation of the elliptical roller 29, the elliptical roller 29 will cooperate with the upper spring connecting plate 23 to drive the inner container 22 to oscillate in the vertical direction.

[0028] Emission Zone 3 includes: The bottom cylinder 31 is connected to the bottom of the inner cavity of the insulated box 21 through a through-hole; The filter screen 32 has its outer surface inserted into the inner cavity of the bottom cylinder 31 through an annular groove.

[0029] Emissions Zone 3 also includes: Rotate the chassis 36, and the outer surface of the chassis 36 is fitted into the bottom of the inner wall of the holding bottom cylinder 31; The inner cylinder 35 is inserted into the axis of the inner cavity of the rotating base 36, and the inner wall of the inner cylinder 35 is slidably connected to the traction rod 34. The sliding diaphragm 33 is inserted into the top of the traction rod 34 at the axis of its inner wall, and the outer surface of the sliding diaphragm 33 is slidably connected to the inner wall of the holding bottom cylinder 31. The inner cylinder 35 can move the sliding diaphragm 33 to slide vertically against the holding bottom cylinder 31 by retracting the traction rod 34.

[0030] The plastic granules entering the heating zone 2 are preheated by immersing in the hot water inside the inner container 22. During this process, the built-in motors 28 on both sides drive the inner container 22 to vibrate up and down by rotating the elliptical rollers 29, which causes the plastic granules in the hot water to oscillate and spread out, ensuring that each granule is subjected to uniform force. After preheating, the external control plate 27 opens the bottom opening of the inner container 22 by rotating the closed bottom plates 25 on both sides, allowing the hot water and plastic granules to flow into the discharge zone 3 below.

[0031] After the plastic granules fall into the bottom cylinder 31, the inner cylinder 35 first pulls down the sliding diaphragm 33 by retracting the traction rod 34. Then, the hot water is discharged through the filter screen 32 on the side of the bottom cylinder 31. As the exposed area of ​​the filter screen 32 increases, the drainage efficiency increases. Then, the base 36 rotates, which drives the sliding diaphragm 33 and the plastic granules above to rotate centrifugally by rotating the inner cylinder 35, thereby drying the water stains on the outer surface of the plastic granules. After the plastic granules are preheated, the bottom cylinder 31 can be removed and the plastic granules inside can be poured out.

[0032] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A recycled plastic particle preheating device, comprising a crushing zone (1), a heating zone (2) and a discharge zone (3), wherein the heating zone (2) is arranged on top of the discharge zone (3), and the crushing zone (1) is arranged on top of the heating zone (2): characterized in that The crushing zone (1) comprises a control box (11) and a clamping component (4) arranged symmetrically on both sides of the inner wall of the control box (11): The clamping component (4) has a switching motor (46), a guide plate shell (42), a traction pull plate (43), a torque motor (45) and a crushing roller shaft (44); The two ends of the crushing roller shaft (44) are respectively inserted with the outer surfaces of the shafts of the two torque motors (45), the outer surface of the shell of the torque motor (45) is inserted with the end of the traction pull plate (43) away from the guide plate shell (42), and the outer surface of the shell of the switching motor (46) is inserted with the inner wall of the control box (11); The outer surface of the rotating disc of the switching motor (46) is inserted with the outer surface of the guide plate shell (42) through a plug rod, and the outer surface of the traction pull plate (43) is slidingly connected with the inner wall of the guide plate shell (42), and the switching motor (46) rotates the crushing roller shafts (44) on both sides with the shaft center of the switching motor (46) as the rotating shaft by twisting the guide plate shell (42).

2. The recycled plastic pellets preheating apparatus of claim 1, wherein: The clamping component (4) further comprises: A pressure control air plate (41) is inserted in the middle of the inner cavity of the guide plate shell (42) through a slot, and the upper and lower ends of the pressure control air plate (41) extend to the outside of the guide plate shell (42).

3. The recycled plastic pellet preheating apparatus of claim 2, wherein: The crushing zone (1) further comprises: A temperature compensation top plate (12) is symmetrically arranged on both sides of the upper part of the inner cavity of the control box (11) through a slot; A guide top plate (13) is inserted with the shaft center at the top of the inner cavity of the control box (11); A discharge inclined rail (15) is arranged at the bottom of the inner cavity of the control box (11); A control panel (14) is arranged on the front of the outer surface of the control box (11); A blowing component (5) is arranged inside the clamping component (4).

4. The recycled plastic pellet preheating apparatus of claim 3, wherein: The blowing component (5) comprises: A butterfly-shaped blowing box (51) has wind-shielding baffles symmetrically arranged on both sides thereof; Air inlet notches (52) are symmetrically formed on both sides of the outer surface of the butterfly-shaped blowing box (51), and air exhaust holes (53) are symmetrically formed on both sides of the butterfly-shaped blowing box (51) close to the wind-shielding baffles, and the outer surface of the butterfly-shaped blowing box (51) is inserted with the outer surface of the guide plate shell (42) through an anchoring plug rod (54).

5. The recycled plastic pellet preheating apparatus of claim 1, wherein: The heating zone (2) comprises: A heat preservation box (21) is inserted with the lower surface of the control box (11) at the top thereof; A content box (22) has spring connecting plates (23) symmetrically inserted with the inner cavity thereof at the top; Inner heating plates (24) are symmetrically arranged on both sides of the inner cavity of the content box (22); The water delivery hose is inserted into the inner cavity of the containing box (22) through the drainage port, and the end of the water delivery hose away from the containing box (22) extends to the outside of the heat preservation box (21).

6. The recycled plastic pellet preheating apparatus of claim 5, wherein: The heating area (2) further comprises: A closed bottom plate (25) is symmetrically arranged at the bottom of the inner cavity of the containing box (22), and the side edge of the closed bottom plate (25) is rotationally connected to the joint rotating shaft (26); An outer control connecting plate (27) is inserted into the inner cavity of the joint rotating shaft (26) through the outer surface of the rotating shaft of the outer control connecting plate (27), and the outer surface of the outer shell of the outer control connecting plate (27) is clamped with the outer surface of the containing box (22); An elliptical roller shaft (29) is inserted into the inner cavity of the containing box (22) through the outer surface of the elliptical roller shaft (29), and the outer surface of the elliptical roller shaft (29) is in mutual extrusion with the outer surface of the containing box (22); the two ends of the elliptical roller shaft (29) are inserted into the built-in motor (28), and the outer surface of the motor shell is inserted into the inner wall of the heat preservation box (21).

7. The recycled plastic pellet preheating apparatus of claim 5, wherein: The discharge area (3) comprises: A containing bottom cylinder (31) is inserted into the bottom of the inner cavity of the heat preservation box (21) through the through hole at the top of the containing bottom cylinder (31); A filter screen cover (32) is inserted into the inner cavity of the containing bottom cylinder (31) through the annular cutting groove on the outer surface of the filter screen cover (32).

8. The recycled plastic pellet preheating apparatus of claim 7, wherein: The discharge area (3) further comprises: A rotating bottom disc (36) is sleeved with the bottom of the inner wall of the containing bottom cylinder (31) through the outer surface of the rotating bottom disc (36); A containing inner cylinder (35) is inserted into the inner cavity of the rotating bottom disc (36) through the outer surface of the containing inner cylinder (35), and the inner wall of the containing inner cylinder (35) is slidingly connected with the traction connecting rod (34); A sliding eardrum (33) is inserted into the top end of the traction connecting rod (34) through the axis of the inner wall of the sliding eardrum (33), and the outer surface of the sliding eardrum (33) is slidingly connected with the inner wall of the containing bottom cylinder (31).

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