A preheating device for recycled plastic particles

Abstract

The present invention discloses a preheating device for recycled plastic particles, which relates to the technical field of recycled plastic particle processing, and includes a base and a power assembly, wherein a fan is arranged on the surface of the base, a preheating box is connected to one side of the power assembly, a lower bin is connected to the side of the preheating box, and an exhaust valve is arranged on the top of the lower bin, a spiral conveying sheet is fixed on the surface of the hollow shaft, and a loose column is arranged inside the hole. The preheating device for recycled plastic particles uses a speed regulating motor to drive the hollow shaft to rotate the spiral conveying sheet, thereby carrying the particles for moving and conveying, and also drives the reciprocating screw to rotate, thereby causing the moving pipe sleeve to carry the magnetic pole sleeve to reciprocate, and each magnetic pole sleeve with staggered magnetic poles exerts a repulsive force or an attractive force on the magnetic pole end, so that the magnetic pole end carries the loose column to perform piston motion and rotates synchronously with the spiral conveying sheet to loosen the plastic particles in the conveying process, thereby preventing the plastic particles from agglomerating and transmitting.

Description

Technical Field

[0001] The invention relates to the technical field of recycled plastic particle processing, in particular to a preheating device for recycled plastic particles. Background Art

[0002] Recycled plastics are plastics that have been discarded and recycled as raw materials or are mixed with new plastic materials in proportion and then regenerated as raw materials through a screw machine. They are then cut into granular plastic particles by a pelletizer. In order to facilitate subsequent processing, the recycled plastics will be crushed into recycled plastic particles and sent to the next process after preheating. The commonly used preheating method is to use a fan to send the heat of the heater directly into the pellet pile where the recycled plastic particles are stored through a pipe, and preheat the recycled plastic particles by transferring heat from the inside to the outside.

[0003] Existing preheating devices for recycled plastic particles usually convey the recycled plastic particles through a screw conveying structure and preheat them with hot air during the conveying process. The bolt conveying structure is difficult to actively break up the particles that have agglomerated due to moisture when conveying the particles, resulting in the need for a separate stirring structure to break up the agglomerated plastic particles, which increases the size of the equipment.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a preheating device for recycled plastic particles is proposed. Summary of the invention

[0005] In view of the deficiencies of the prior art, the present invention provides a preheating device for recycled plastic particles, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above purpose, the present invention is implemented through the following technical solutions: a preheating device for recycled plastic particles, including a base and a power component, a fan is arranged on the surface of the base, and a power component is arranged on one side of the fan, a preheating box is connected to one side of the power component, and a feed port is opened on the top of the preheating box, a lower bin is connected to the side of the preheating box, and an exhaust valve is arranged on the top of the lower bin, and the power component includes a motor box, a speed regulating motor, a hollow shaft, a spiral conveying sheet, a penetration hole, a loose column, a magnetic pole, a reciprocating screw, a limit A positioning slide rod, a movable tube sleeve and a magnetic pole sleeve, a speed regulating motor is arranged inside the motor box, and the end of the speed regulating motor is connected to a hollow rotating shaft, a spiral conveying sheet is fixed on the surface of the hollow rotating shaft, and a penetration hole is opened on the surface of the hollow rotating shaft, a loose column is penetrated inside the penetration hole, and a magnetic pole end is arranged at one end of the loose column located inside the hollow rotating shaft, a reciprocating screw rod is penetrated inside the hollow rotating shaft, and a movable tube sleeve is sleeved on the surface of the reciprocating screw rod, limiting slide rods are penetrated at both ends of the movable tube sleeve, and magnetic pole sleeves are equidistantly distributed on the surface of the movable tube sleeve.

[0007] Furthermore, an air duct is provided inside the base, and the air outlet end of the fan is connected to the air duct inside the base, and the air outlet end of the air duct is located inside the preheating box.

[0008] Furthermore, the penetration holes are distributed in a spiral shape on the surface of the hollow shaft, and the penetration holes are distributed in parallel with the spiral conveying sheet.

[0009] Furthermore, one end of the reciprocating screw is connected to the output shaft of the speed regulating motor, and the reciprocating screw and the hollow rotating shaft do not contact each other.

[0010] Furthermore, the magnetic poles of two adjacent magnetic pole sleeves are opposite, and all the magnetic pole ends are the same magnetic pole.

[0011] Furthermore, the limiting sliding rod is located inside the hollow rotating shaft, and one end of the limiting sliding rod close to the speed regulating motor is fixedly connected to the inner side of the preheating box.

[0012] Furthermore, one end of the limit slide bar away from the speed regulating motor is fixedly connected to the inner side of the lower material bin, and the limit slide bar is distributed parallel to the reciprocating screw rod and the hollow rotating shaft.

[0013] Furthermore, the reciprocating screw passes through the preheating box and extends into the lower bin, and a first bearing is provided at one end of the reciprocating screw away from the speed regulating motor.

[0014] Furthermore, the reciprocating screw is rotatably connected to the inner side of the lower material bin through a first bearing, and a second bearing is arranged outside the first bearing, the second bearing is located at one end of the hollow shaft away from the speed regulating motor, and the hollow shaft is rotatably connected to the inner side of the lower material bin through the second bearing.

[0015] Furthermore, a protective sleeve is provided on the outside of one end of any hollow rotating shaft located inside the lower material bin, and the protective sleeve is fixedly connected to the inner side surface of the lower material bin, a first bevel gear is fixed to the surface of the hollow rotating shaft inside the protective sleeve, and the side of the first bevel gear is meshingly connected to the second bevel gear, a transmission shaft is fixed to the top of the second bevel gear, the top of the transmission shaft is connected to the first gear, and the side of the first gear is meshingly connected to the second gear, the bottom of the second gear is connected to a stirring shaft, and the stirring shaft is located between the hollow rotating shafts, and the top of the first gear and the second gear are rotatably connected to the top of the inner wall of the lower material bin.

[0016] The present invention provides a preheating device for recycled plastic particles, which has the following beneficial effects:

[0017] 1. The preheating device for recycled plastic particles uses a speed regulating motor to drive a hollow rotating shaft to rotate a spiral conveying sheet, thereby carrying particles for moving and conveying, and at the same time driving a reciprocating screw to rotate, thereby causing a movable pipe sleeve to carry a magnetic pole sleeve to reciprocate, and each magnetic pole sleeve with staggered magnetic poles exerts a repulsive force or an attractive force on the magnetic pole end, so that the magnetic pole end carries a loosening column to perform a piston movement and rotates synchronously with the spiral conveying sheet to loosen the plastic particles in the conveying process, thereby preventing the plastic particles from agglomerating and being transmitted, and the plastic particles are loosened by the piston movement of the loosening column to generate a distance between the particles, thereby allowing a hot air flow to pass through, thereby enhancing the preheating effect on the plastic particles.

[0018] 2. The preheating device for recycled plastic particles, the spiral conveyor piece rotates to convey the plastic particles to the lower bin. When the material is not being discharged, the plastic particles are piled up inside the lower bin, which is not convenient for hot air flow to flow. Based on this, the first bevel gear is driven by the rotation of the hollow shaft to rotate the second bevel gear, thereby driving the transmission shaft to mesh the first gear with the second gear to rotate, so that the bottom of the stirring shaft is located in the accumulated plastic particles and rotates, thereby stirring the accumulated plastic particles, so that the accumulated plastic particles inside the lower bin are loosened to facilitate air flow, and at the same time, when the plastic particles are being discharged, the particles can be prevented from accumulating with each other and blocking the main discharge port by stirring them. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall appearance structure of a preheating device for recycled plastic particles of the present invention;

[0020] Figure 2 This is a schematic diagram of the pipeline structure at the outlet end of a preheating box of a preheating device for recycled plastic particles of the present invention;

[0021] Figure 3This is a schematic diagram of the hole arrangement structure of a preheating device for recycled plastic particles of the present invention;

[0022] Figure 4 This is a schematic diagram of the reciprocating screw structure of a preheating device for recycled plastic particles of the present invention;

[0023] Figure 5 This is a schematic diagram of the loose column structure of a preheating device for recycled plastic particles of the present invention;

[0024] Figure 6 This is a schematic diagram of the rear end structure of a protective cover of a preheating device for recycled plastic particles of the present invention;

[0025] Figure 7 The present invention is a schematic diagram of the transmission structure of the first bevel gear and the second bevel gear of a preheating device for recycled plastic particles.

[0026] In the figure: 1. base; 2. fan; 3. power assembly; 301. motor box; 302. speed regulating motor; 303. hollow shaft; 304. spiral conveyor; 305. hole; 306. loose column; 307. magnetic pole end; 308. reciprocating screw; 309. limit slide; 310. movable pipe sleeve; 311. magnetic pole sleeve; 4. preheating box; 5. feed port; 6. discharge bin; 7. exhaust valve; 8. first bearing; 9. second bearing; 10. protective cover; 11. first bevel gear; 12. second bevel gear; 13. transmission shaft; 14. first gear; 15. second gear; 16. stirring shaft. DETAILED DESCRIPTION

[0027] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0028] like Figure 1-Figure 7As shown, the present invention provides a technical solution: a preheating device for recycled plastic particles, including a base 1 and a power component 3, a fan 2 is arranged on the surface of the base 1, and a power component 3 is arranged on one side of the fan 2, a preheating box 4 is connected to one side of the power component 3, and a feed port 5 is opened on the top of the preheating box 4, a lower bin 6 is connected to the side of the preheating box 4, and an exhaust valve 7 is arranged on the top of the lower bin 6, the power component 3 includes a motor box 301, a speed regulating motor 302, a hollow shaft 303, a spiral conveying sheet 304, a penetration hole 305, a loose column 306, a magnetic pole end 307, a reciprocating screw rod 308, a limit slide rod 309, a movable pipe sleeve 310 and a magnetic pole sleeve 311, and an electric A speed regulating motor 302 is arranged inside the chassis 301, and a hollow shaft 303 is connected to the end of the speed regulating motor 302, a spiral conveying sheet 304 is fixed to the surface of the hollow shaft 303, and a hole 305 is opened on the surface of the hollow shaft 303, a loose column 306 is penetrated inside the hole 305, and a magnetic pole end 307 is arranged at one end of the loose column 306 located inside the hollow shaft 303, a reciprocating screw rod 308 is penetrated inside the hollow shaft 303, and a movable sleeve 310 is sleeved on the surface of the reciprocating screw rod 308, limiting sliding rods 309 are penetrated at both ends of the movable sleeve 310, and magnetic pole sleeves 311 are evenly distributed on the surface of the movable sleeve 310, and the base 1 An air duct is arranged inside, and the air outlet end of the fan 2 is connected with the air duct inside the base 1, and the air outlet end of the air duct is located inside the preheating box 4, the penetration holes 305 are spirally distributed on the surface of the hollow shaft 303, and the penetration holes 305 and the spiral conveying sheet 304 are parallelly distributed, one end of the reciprocating screw rod 308 is connected to the output shaft of the speed regulating motor 302, and the reciprocating screw rod 308 and the hollow shaft 303 do not contact each other, the magnetic poles between two adjacent pole sleeves 311 are opposite, and all the magnetic pole ends 307 are the same magnetic pole, the limit slide 309 is located inside the hollow shaft 303, and the end of the limit slide rod 309 close to the speed regulating motor 302 is connected to the preheating box 4. The inner side of the box 4 is fixedly connected, the end of the limit slide 309 away from the speed regulating motor 302 is fixedly connected to the inner side of the lower material bin 6, and the limit slide 309 is parallel to the reciprocating screw 308 and the hollow shaft 303. The reciprocating screw 308 penetrates the preheating box 4 and extends into the lower material bin 6, and the end of the reciprocating screw 308 away from the speed regulating motor 302 is provided with a first bearing 8, the reciprocating screw 308 is rotatably connected to the inner side of the lower material bin 6 through the first bearing 8, and a second bearing 9 is provided outside the first bearing 8, the second bearing 9 is located at the end of the hollow shaft 303 away from the speed regulating motor 302, and the hollow shaft 303 is rotatably connected to the inner side of the lower material bin 6 through the second bearing 9;

[0029] The specific operation is as follows: the recycled plastic particles to be preheated enter the preheating box 4 from the feed port 5, and the heat generated by the heater flows with the gas and enters the preheating box 4 along the pipeline through the fan 2. The hot air flows from the preheating box 4 into the lower bin 6 together with the plastic particles. The preheated plastic particles are discharged from the discharge port at the bottom of the lower bin 6, and the hot gas is discharged from the exhaust valve 7 at the top of the lower bin 6.

[0030] The speed regulating motor 302 drives the hollow rotating shaft 303 to rotate the spiral conveying sheet 304, thereby carrying the particles to move, so that the plastic particles are transferred from the preheating box 4 to the lower bin 6, and the plastic particles are preheated by the hot air flow during the transfer process;

[0031] When the speed regulating motor 302 drives the hollow rotating shaft 303 to rotate, it also drives the reciprocating screw rod 308 to rotate, so that the movable sleeve 310 moves back and forth along the surface of the reciprocating screw rod 308, and the movable sleeve 310 moves stably through the limit slide rod 309 when moving back and forth. When the movable sleeve 310 carries the magnetic pole sleeve 311 to move back and forth, each magnetic pole sleeve 311 with staggered magnetic poles exerts a repulsive force or an attractive force on the magnetic pole end 307, so that the magnetic pole end 307 carries the loose column 306 to extend outward or retract along the penetration hole 305, and the loose column 306 therefore continuously expands and contracts to perform piston motion and rotates synchronously with the spiral conveying sheet 304 to loosen the plastic particles in the conveying process to prevent the plastic particles from agglomerating.

[0032] Moreover, the reciprocating screw rod 308 and the end of the hollow shaft 303 away from the speed regulating motor 302 are rotatably connected to the inner side of the lower bin 6 through the first bearing 8 and the second bearing 9, respectively, so as to improve the stability of the reciprocating screw rod 308 and the hollow shaft 303 during rotation. Similarly, the two ends of the limit slide bar 309 are fixedly connected to the inner side of the lower bin 6 and the inner side of the preheating box 4, respectively, which can also improve the stability of the limit slide bar 309.

[0033] Based on the above description, the present invention utilizes the speed regulating motor 302 to drive the hollow rotating shaft 303 to rotate the spiral conveying sheet 304, thereby carrying the particles for movement and transportation, and also driving the reciprocating screw 308 to rotate, thereby causing the movable tube sleeve 310 to carry the magnetic pole sleeve 311 to reciprocate, and each magnetic pole sleeve 311 with staggered magnetic poles exerts a repulsive force or an attractive force on the magnetic pole end 307, so that the magnetic pole end 307 carries the loosening column 306 to perform a piston motion and rotates synchronously with the spiral conveying sheet 304 to loosen the plastic particles in the conveying process, thereby preventing the plastic particles from agglomerating during transmission, and at the same time loosening the plastic particles to create a gap between the particles so that hot air can pass through, thereby enhancing the preheating effect on the plastic particles.

[0034] like Figure 1-Figure 7As shown, a protective sleeve 10 is provided on the outside of one end of any hollow rotating shaft 303 located inside the lower material bin 6, and the protective sleeve 10 is fixedly connected to the inner side surface of the lower material bin 6, a first bevel gear 11 is fixed to the surface of the hollow rotating shaft 303 inside the protective sleeve 10, and the side surface of the first bevel gear 11 is meshingly connected to the second bevel gear 12, a transmission shaft 13 is fixed to the top of the second bevel gear 12, a first gear 14 is connected to the top of the transmission shaft 13, and a second gear 15 is meshingly connected to the side surface of the first gear 14, a stirring shaft 16 is connected to the bottom of the second gear 15, and the stirring shaft 16 is located between the hollow rotating shafts 303, and the tops of the first gear 14 and the second gear 15 are rotatably connected to the top of the inner wall of the lower material bin 6;

[0035] The specific operation is as follows: the spiral conveyor sheet 304 rotates to convey the plastic particles to the unloading bin 6. When unloading is not performed, the plastic particles are accumulated inside the unloading bin 6, which is not convenient for hot air flow to flow. Based on this, the rotation of the hollow shaft 303 drives the first bevel gear 11 to rotate the second bevel gear 12, thereby driving the transmission shaft 13 to make the first gear 14 mesh with the second gear 15 to rotate, so that the bottom of the stirring shaft 16 is located in the accumulated plastic particles and rotates, thereby stirring the accumulated plastic particles, so that the plastic particles accumulated inside the unloading bin 6 can be loosened for air flow, and at the same time, when the plastic particles are unloaded, Stirring it can prevent the particles from piling up and blocking the main discharge port, wherein the first bevel gear 11 and the second bevel gear 12 are located inside the protective cover 10, and the protective cover 10 can prevent the plastic particles from getting stuck between the first bevel gear 11 and the second bevel gear 12, and the first gear 14 and the second gear 15 are located at the top of the inner wall of the lower silo 6, and the plastic particles are located at the bottom of the inner wall of the lower silo 6, so the plastic particles do not affect the rotation of the first gear 14 and the second gear 15, and the stirring shaft 16 is located between the hollow rotating shaft 303 to rotate, and the hollow rotating shaft 303 and the spiral conveying sheet 304 do not interfere with the rotation of the stirring shaft 16 when they rotate.

[0036] In summary, when the preheating device for recycled plastic particles is used, the recycled plastic particles to be preheated first enter the preheating box 4 from the feed port 5, and the heat generated by the heater flows with the gas and enters the preheating box 4 along the pipeline through the fan 2, and the hot air flow flows from the preheating box 4 into the lower bin 6 together with the plastic particles, and the preheated plastic particles are discharged from the discharge port at the bottom of the lower bin 6, and the hot gas is discharged from the exhaust valve 7 at the top of the lower bin 6;

[0037] The speed regulating motor 302 drives the hollow rotating shaft 303 to rotate the spiral conveying sheet 304, thereby carrying the particles to move, so that the plastic particles are transferred from the preheating box 4 to the lower bin 6, and the plastic particles are preheated by the hot air flow during the transfer process;

[0038] When the speed regulating motor 302 drives the hollow rotating shaft 303 to rotate, it also drives the reciprocating screw 308 to rotate, so that the movable sleeve 310 moves back and forth along the surface of the reciprocating screw 308, and the movable sleeve 310 moves stably through the limit slide bar 309 when moving back and forth. When the movable sleeve 310 carries the magnetic pole sleeve 311 to move back and forth, each magnetic pole sleeve 311 with staggered magnetic poles exerts a repulsive force or an attractive force on the magnetic pole end 307, so that the magnetic pole end 307 carries the loose column 306 to extend outward or retract along the penetration hole 305, and the loose column 306 thus continuously expands and contracts to perform piston motion and rotates synchronously with the spiral conveying sheet 304 to loosen the plastic particles in the conveying process;

[0039] The spiral conveyor plate 304 rotates to convey the plastic particles to the discharge bin (6). When the discharge is not being carried out, the plastic particles are accumulated inside the discharge bin (6), which makes it difficult for hot air to circulate. Based on this, the rotation of the hollow shaft (303) drives the first bevel gear (11) to rotate the second bevel gear (12), thereby driving the transmission shaft (13) to rotate the first gear (14) meshing with the second gear (15), so that the bottom of the stirring shaft (16) is located in the accumulated plastic particles and rotates, thereby stirring the accumulated plastic particles, so that the accumulated plastic particles inside the discharge bin (6) are loosened to facilitate air circulation. At the same time, when the plastic particles are being discharged, stirring them can prevent the particles from accumulating and blocking the main discharge port.

[0040] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A preheating device for recycled plastic particles, comprising a base (1) and a power assembly (3), characterized in that: A fan (2) is disposed on the surface of the base (1), and a power assembly (3) is disposed on one side of the fan (2); a preheating box (4) is connected to one side of the power assembly (3), and a feed port (5) is provided on the top of the preheating box (4); a lower material bin (6) is connected to the side of the preheating box (4), and an exhaust valve (7) is provided on the top of the lower material bin (6); the power assembly (3) comprises a motor box (301), a speed regulating motor (302), an air A central rotating shaft (303), a spiral conveying sheet (304), a penetration hole (305), a loose column (306), a magnetic pole end (307), a reciprocating screw rod (308), a limit slide rod (309), a movable sleeve (310) and a magnetic pole sleeve (311); a speed regulating motor (302) is arranged inside the motor box (301), and an end of the speed regulating motor (302) is connected to a hollow rotating shaft (303); a surface of the hollow rotating shaft (303) is fixed A spiral conveying sheet (304) is fixed, and a hole (305) is opened on the surface of the hollow rotating shaft (303), a loose column (306) is penetrated inside the hole (305), and a magnetic pole end (307) is arranged at one end of the loose column (306) located inside the hollow rotating shaft (303), a reciprocating screw rod (308) is penetrated inside the hollow rotating shaft (303), and a movable sleeve (310) is sleeved on the surface of the reciprocating screw rod (308). ), limit sliding bars (309) are provided at both ends of the movable sleeve (310), and magnetic pole sleeves (311) are evenly distributed on the surface of the movable sleeve (310), one end of the reciprocating screw (308) is connected to the output shaft of the speed regulating motor (302), and the reciprocating screw (308) and the hollow rotating shaft (303) do not contact each other, the magnetic poles of two adjacent magnetic pole sleeves (311) are opposite, and all the magnetic pole ends (307) are the same magnetic pole.

2. A preheating device for recycled plastic particles according to claim 1, characterized in that: An air supply duct is provided inside the base (1), and an air outlet end of the fan (2) is connected to the air supply duct inside the base (1), and the air outlet end of the air supply duct is located inside the preheating box (4).

3. A preheating device for recycled plastic particles according to claim 1, characterized in that: The penetration holes (305) are distributed in a spiral shape on the surface of the hollow rotating shaft (303), and the penetration holes (305) and the spiral conveying sheet (304) are distributed in parallel.

4. A preheating device for recycled plastic particles according to claim 1, characterized in that: The limiting sliding rod (309) is located inside the hollow rotating shaft (303), and one end of the limiting sliding rod (309) close to the speed regulating motor (302) is fixedly connected to the inner side surface of the preheating box (4).

5. A preheating device for recycled plastic particles according to claim 1, characterized in that: One end of the limit slide bar (309) away from the speed regulating motor (302) is fixedly connected to the inner side of the lower material bin (6), and the limit slide bar (309) is arranged in parallel with the reciprocating screw rod (308) and the hollow rotating shaft (303).

6. A preheating device for recycled plastic particles according to claim 1, characterized in that: The reciprocating screw rod (308) passes through the preheating box (4) and extends into the interior of the lower material bin (6), and a first bearing (8) is provided at one end of the reciprocating screw rod (308) away from the speed regulating motor (302).

7. A preheating device for recycled plastic particles according to claim 6, characterized in that: The reciprocating screw rod (308) is rotatably connected to the inner side surface of the lower material bin (6) via a first bearing (8), and a second bearing (9) is provided outside the first bearing (8), the second bearing (9) is located at an end of the hollow rotating shaft (303) away from the speed regulating motor (302), and the hollow rotating shaft (303) is rotatably connected to the inner side surface of the lower material bin (6) via the second bearing (9).

8. A preheating device for recycled plastic particles according to claim 1, characterized in that: Two hollow rotating shafts (303) are provided, and a protective sleeve (10) is provided on the outside of one end of any hollow rotating shaft (303) located inside the lower material bin (6), and the protective sleeve (10) is fixedly connected to the inner side surface of the lower material bin (6); a first bevel gear (11) is fixed to the surface of the hollow rotating shaft (303) inside the protective sleeve (10), and the side surface of the first bevel gear (11) is meshingly connected to the second bevel gear (12); a transmission shaft (13) is fixed to the top of the second bevel gear (12), the top of the transmission shaft (13) is connected to the first gear (14), and the side surface of the first gear (14) is meshingly connected to the second gear (15); the bottom of the second gear (15) is connected to the stirring shaft (16), and the stirring shaft (16) is located between the hollow rotating shafts (303); the tops of the first gear (14) and the second gear (15) are rotatably connected to the top of the inner wall of the lower material bin (6).

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