A processing device for plastic liquefaction

Abstract

The application discloses a processing device for plastic liquefaction, which comprises a base, a liquefaction mechanism is arranged outside the base, the liquefaction mechanism comprises a fixed rod, one end of the fixed rod is fixedly connected with the outer surface of the base, a rotating plate is rotatably connected through the outer surface of the fixed rod, recesses are equiangularly arranged on the outer surface of the rotating plate, a heat box is arranged in the recesses, material pipes are in communication with the both sides in the heat box, a guard plate is fixedly connected with the outer surface of the material pipe on the other side, the outer surface of the guard plate is fixedly connected with the outer surface of the heat box, a conical cylinder is fixedly connected with the inside of the heat box, and a gas pipe is in communication with the inside of the heat box, which relates to the technical field of plastic processing, and solves the problem that the actual liquefaction efficiency and effect are still poor because the crushed plastic particles are not screened during the use of the existing plastic processing device.

Description

Technical Field

[0001] This invention relates to the field of plastic processing technology, specifically to a processing apparatus for plastic liquefaction. Background Technology

[0002] Plastic processing requires liquefying waste plastics before reshaping them. Existing plastic processing equipment has poor liquefaction efficiency, and the toxic gases produced during plastic liquefaction lack ventilation measures, posing a respiratory safety hazard to production personnel. A utility model patent with publication number CN210820370U discloses a plastic processing device comprising a mounting plate, a crushing unit, and a heating and stirring unit. The mounting plate is rectangular. The crushing unit includes a shell, a crushing roller, a first pulley, a second pulley, gears, and a main motor. The device has a simple structure, is easy to operate, provides good plastic liquefaction, and does not pollute the air.

[0003] Although this device has the advantages mentioned above, it still has the following drawbacks during use: 1) The device does not perform screening after crushing waste plastics, and plastic particles of different sizes are liquefied at the same time, resulting in poor overall liquefaction efficiency and effect. 2) Although the device improves the uniformity of heating of plastic particles through spiral stirring, it is still limited by the size of plastic particles, resulting in low actual liquefaction efficiency and additional energy consumption and production costs.

[0004] Therefore, improvements are needed to address the shortcomings of existing plastic processing equipment. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a processing device for plastic liquefaction, which solves the problem that existing plastic processing devices do not perform sieving of crushed plastic particles, resulting in simultaneous heating of plastic particles of different sizes and thus poor actual liquefaction efficiency and effect.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a processing device for plastic liquefaction, comprising a base, a liquefaction mechanism disposed on the outside of the base, the liquefaction mechanism comprising a fixed rod, one end of the fixed rod being fixedly connected to the outer surface of the base, a rotating plate being rotatably connected through the outer surface of the fixed rod, a groove being formed at equal angles on the outer surface of the rotating plate, a heating box being disposed inside the groove, material pipes being connected through both sides of the heating box, a protective plate being fixedly connected to the outer surface of the material pipe on the other side, the outer surface of the protective plate being fixedly connected to the outer surface of the heating box, a conical cylinder being fixedly connected inside the heating box, an air pipe being connected through the heating box, a spring tube being connected to one end of the air pipe, a purification device being connected through one end of the spring tube, the outer surface of the purification device being fixedly connected to the other end of the fixed rod, a sliding groove being formed inside the groove, a sliding strip being slidably connected inside the sliding groove, the outer surface of the sliding strip being slidably connected to the inside of the groove, and one end of the sliding strip being fixedly connected to the outer surface of the heating box.

[0007] Preferably, the slide bar has a slide rod slidably connected through it, both ends of the slide rod are fixedly connected to the inside of the slide groove, and a compression spring is sleeved on the outside of the slide rod, with both ends of the compression spring being fixedly connected to the inside of the slide groove and the outer surface of the slide bar, respectively.

[0008] Preferably, a vibration assembly is provided on the outside of the protective plate. The vibration assembly includes a frame, the outer surface of which is fixedly connected to the outer surface of the base. A guide bar is slidably connected through the body of the frame. A top plate is fixedly connected to one end of the guide bar. The outer surface of the top plate is movably connected to the outer surface of the protective plate. A cam is movably connected to the other end of the guide bar. A rotating shaft is fixedly connected through the body of the cam. The outer surface of the rotating shaft is rotatably connected through the body of the frame.

[0009] Preferably, a spiral strip is movably connected through the body of the rotating shaft, a stop block is fixedly connected to one end of the spiral strip, a lever is movably connected to the outer surface of the stop block, one end of the lever is fixedly connected to the outer surface of the rotating plate, and a tension spring is sleeved on the outside of the spiral strip, with both ends of the tension spring being fixedly connected to the outer surfaces of the stop block and the fixed frame, respectively.

[0010] Preferably, a feeding assembly is provided on the outside of one side of the material pipe. The feeding assembly includes a water tank. The outer surface of the water tank is fixedly connected to the outer surface of the base. A connecting pipe runs through the inside of the water tank. A water pan runs through one end of the connecting pipe. A filter screen is provided inside one end of the connecting pipe. A screen tube runs through the inside of the water pan. The screen tubes are arranged radially at equal angles and axially at equal intervals. A material box is provided on the outside of the screen tube. A fixed pipe runs through both sides of the inside of the material box. One end of the fixed pipe on one side is connected to one end of the material pipe on the other side. One end of the fixed pipe on the other side runs through the inside of the screen tube.

[0011] Preferably, the screen tube body is embedded and fixedly connected to a screen plate, the screen plate is provided with a fixed cover, the outer surface of the fixed cover is fixedly connected to the outer surface of the screen plate, and a return pipe is connected through the inside of the screen plate, one end of the return pipe being connected through the inside of the water tank.

[0012] Preferably, a processing unit is provided outside the material bin, the processing unit including an insulated barrel, the insulated barrel being sleeved on the outside of the material bin, the body of the insulated barrel being fixedly connected to the outer surface of the two side fixed pipes respectively, a parallel pipe being connected through the inside of the insulated barrel, a series pipe being connected through the inside of the parallel pipe, one end of the series pipe being connected to the exhaust end of the purification device, a condenser pipe being connected through the inside of both the material bin and the insulated barrel, one end of the condenser pipe being connected through the inside of the water tank.

[0013] Preferably, the parallel pipe is rotatably connected to a fan blade, the shaft end of the fan blade is rotatably connected to the body of the material box and extends into the interior of the material box, the shaft end of the fan blade is fixedly connected to a flap, the outer surface of the flap is rotatably connected to the interior of the material box, an inner ring and an outer ring are sleeved on the outside of the fan blade shaft end, the inner ring and the outer ring are equidistant and staggered, the inner ring is fixedly connected to the outer surface of the material box, and the outer surface of the outer ring is fixedly connected to the interior of the insulation barrel.

[0014] Beneficial effects This invention provides a processing apparatus for plastic liquefaction. Compared with the prior art, it has the following advantages: (1) By setting up a liquefaction mechanism, a cone is set inside the hot box, so that small plastic particles with small size and small quantity are placed at the bottom inside the hot box, and layered upwards according to particle size. By placing plastic particles of different sizes in layers, the plastic particles at the bottom need less heat when heated, and the excess heat rises and is transferred to the larger plastic particles through the cone, thereby shortening the time difference between the liquefaction of large and small particles, so that the overall liquefaction efficiency and effect are consistent. Furthermore, by reducing the volume of the hot box and increasing the number of hot boxes, and through the transfer action of the rotating plate, rapid and continuous plastic particle liquefaction processing is achieved.

[0015] (2) By setting up a vibrating assembly, when the push bar follows the rotating plate, the chamfer between one end of the push bar and the abutment block causes the abutment block to push the spiral bar to slide and compress the tension spring. Then, through the spiral abutment between the spiral bar and the rotating shaft, the rotating shaft drives the cam to rotate in both directions when the abutment block reciprocates. Then, through the abutment between the cam and the two chamfers at one end of the guide bar, the guide bar drives the top plate to move up and down repeatedly. Thus, the top plate collides with the guard plate, causing the hot box to move up and down and generate a certain vibration. This allows the plastic particles of different sizes added to the hot box to be layered horizontally, so as to ensure the liquefaction effect of plastic particles of different sizes.

[0016] (3) By setting up a feeding component, the water tank pumps liquid water into the water pan through the connecting pipe and adds the crushed plastic particles into the water pan. Then, through the staggered screen pipe, the plastic particles of different sizes are screened by water flotation. Water flotation is used to improve the screening efficiency and effect. The screen plate can be used to screen the screened plastic particles and liquid water again. Through the action of the solid cover and the return pipe, the liquid water can be recycled to reduce losses and avoid affecting the liquefaction efficiency and effect of the plastic particles.

[0017] (4) By setting up a processing unit, the heat preservation tank can be connected to the purification device using parallel and series pipes, thereby using the purified hot air to dry and preheat the plastic particles inside the material box. This not only improves the subsequent liquefaction efficiency and effect, but also allows for the recovery of a small amount of liquid water, further reducing losses. At the same time, the paddle drives the flap to rotate, which can improve the uniformity of heating, thereby improving the drying and preheating efficiency. Furthermore, the inner and outer rings form a wave-shaped channel, which increases the contact time between the hot air and the material box, thereby improving the heat recovery rate. Attached Figure Description

[0018] Figure 1 This is a perspective view of the external structure of the present invention; Figure 2 This is a perspective view of the internal structure of the heating box of the present invention; Figure 3 This is a perspective view of the internal structure of the groove in this invention; Figure 4 This is a perspective view of the external structure of the rotating shaft of the present invention; Figure 5 This is a perspective view of the internal structure of the sieve tube of the present invention; Figure 6 This is a three-dimensional view of the internal structure of the material box of the present invention.

[0019] In the diagram: 1. Base; 2. Fixed rod; 3. Rotating plate; 4. Groove; 5. Hot box; 6. Material pipe; 7. Feeding assembly; 71. Water tank; 72. Connecting pipe; 73. Water tray; 74. Filter screen; 75. Screen pipe; 76. Material bin; 77. Processing unit; 771. Insulation tank; 772. Parallel pipe; 773. Series pipe; 774. Condenser pipe; 775. Fan blade; 776. Flip plate; 777. Inner ring; 778. Outer ring; 78. Fixed pipe; 79. Screen plate; 710. Fixed cover; 711. Return pipe; 8. Protective plate; 9. Vibrating assembly; 91. Fixed frame; 92. Guide bar; 93. Top plate; 94. Cam; 95. Rotating shaft; 96. Spiral bar; 97. Abutment block; 98. Pulley; 99. Tension spring; 10. Cone; 11. Air pipe; 12. Bourdon tube; 13. Purification device; 14. Slide groove; 15. Slide bar; 16. Slide rod; 17. Compression spring. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figure 1-6 The present invention provides a technical solution: a processing apparatus for plastic liquefaction. The system includes a base 1, with a liquefaction mechanism on its exterior. The liquefaction mechanism includes a fixed rod 2, one end of which is fixedly connected to the outer surface of the base 1. A rotating plate 3 is rotatably connected through the outer surface of the fixed rod 2, providing fixed support. The rotating plate 3 is connected to the fixed rod 2 via bearings and can be rotated by an external drive (not shown in the figure). The outer surface of the rotating plate 3 has equally spaced grooves 4, which serve to store and provide lateral protection. A heating box 5 is housed inside the grooves 4. The heating box 5 consists of a heating tank and electromagnetic heating tubes (not shown in the figure), but with reduced volume and increased quantity. This reduces the amount of plastic processed, improving liquefaction efficiency and effect. Continuous processing further enhances liquefaction efficiency. Material pipes 6 are connected to both sides of the heating box 5, used for feeding plastic granules and discharging liquefied plastic, respectively. A protective plate 8 is fixedly connected to the outer surface of the other material pipe 6, providing protection. The outer surface of the protective plate 8 is fixedly connected to the outer surface of the heating box 5. A cone 10 is fixedly connected inside the box 5. The cone 10 has a through filter hole to facilitate heat transfer and the flow of liquefied plastic. An air pipe 11 is connected through the inside of the hot box 5. Solenoid valves (not shown in the figure) that are electrically connected to an external control circuit are installed on the air pipe 11 and the material pipes 6 on both sides. One end of the air pipe 11 is connected to a spring tube 12. The elastic extension and contraction of the spring tube 12 facilitates the movement of the hot box 5. One end of the spring tube 12 is connected to a purification device 13. The purification device 13 is composed of existing air pumps, filter tanks and other structures, and can purify toxic gases. The air pump is electrically connected to an external control circuit. The outer surface of the purification device 13 is fixedly connected to the other end of the fixed rod 2. A sliding groove 14 is opened inside the groove 4. A sliding strip 15 is slidably connected inside the groove 14. The sliding strip 15 and the groove 14 are both T-shaped in the top view to improve the radial stability of the hot box 5. The outer surface of the sliding strip 15 is slidably connected to the inside of the groove 4. One end of the sliding strip 15 is fixedly connected to the outer surface of the hot box 5.

[0022] The slide bar 15 has a slide rod 16 that slides through it. The slide rod 16 can guide the movement of the slide bar 15 and increase the force on the slide bar 15. Both ends of the slide rod 16 are fixedly connected to the inside of the slide groove 14. A compression spring 17 is sleeved on the outside of the slide rod 16. The compression spring 17 can reset the heating box 5 and avoid excessive movement, which would lead to poor plastic delamination. Both ends of the compression spring 17 are fixedly connected to the inside of the slide groove 14 and the outer surface of the slide bar 15, respectively.

[0023] The outer side of the guard plate 8 is provided with a vibration assembly 9, which includes a frame 91. The outer surface of the frame 91 is fixedly connected to the outer surface of the base 1. The body of the frame 91 is slidably connected to a guide bar 92. The guide bar 92 has a rectangular cross-section to guide and limit movement. The end of the guide bar 92 used for contact is provided with two mirrored chamfers. One end of the guide bar 92 is fixedly connected to a top plate 93. The top plate 93 is elongated to increase the contact range with the guard plate 8, thereby improving the vibration effect. The outer surface of the top plate 93 is movably connected to the outer surface of the guard plate 8. The other end of the guide bar 92 is movably connected to a cam 94. The cam 94 can intermittently push the guide bar 92 upward by contacting the chamfer of the guide bar 92. The body of the cam 94 is fixedly connected to a rotating shaft 95. The rotating shaft 95 is connected to the frame 91 through a bearing. The outer surface of the rotating shaft 95 is rotatably connected to the body of the frame 91.

[0024] A spiral bar 96 is movably connected through the main body of the rotating shaft 95. The spiral bar 96, through its spiral contact with the rotating shaft 95, can push the rotating shaft 95 to rotate in both directions during axial reciprocating sliding. This allows the cam 94 to continuously move the guide bar 92 to slide. One end of the spiral bar 96 is fixedly connected to a stop block 97. A lever 98 is movably connected to the outer surface of the stop block 97. Both the lever 98 and the stop block 97 have matching chamfers at their contact points. One end of the lever 98 is fixedly connected to the outer surface of the rotating plate 3. A tension spring 99 is sleeved on the outside of the spiral bar 96. The tension spring 99 can facilitate the stop block 97 to drive the spiral bar 96 to reset through its rebound. The two ends of the tension spring 99 are fixedly connected to the outer surfaces of the stop block 97 and the bracket 91, respectively.

[0025] A feeding assembly 7 is installed on the outside of one side of the feed pipe 6. The feeding assembly 7 includes a water tank 71, which contains liquid water and a water pump. The water pump is electrically connected to an external control circuit. The outer surface of the water tank 71 is fixedly connected to the outer surface of the base 1. A connecting pipe 72 runs through the inside of the water tank 71. One end of the connecting pipe 72 inside the water tank 71 is connected to the output end of the water pump via a flange. A water tray 73 runs through the other end of the connecting pipe 72. The water tray 73 contains liquid water and crushed plastic particles. An existing plastic crushing unit can be fixed on the top of the water tray 73. A filter screen 74 is installed inside one end of the connecting pipe 72. The filter screen 74 prevents plastic particles from entering the interior of the water tank 71 through the connecting pipe 72. To prevent this from happening, the liquid level inside the water pan 73 can be set higher than the end of the connecting pipe 72 before the plastic particles are added into the water pan 73. A screen pipe 75 is connected through the inside of the water pan 73. The screen pipe 75 is set at equal angles in the radial direction and at equal intervals in the axial direction. The equal intervals in the axial direction of the screen pipe 75 can be used to screen plastic particles of different sizes by water flotation. At the same time, the equal angles in the radial direction can facilitate the sequential addition of plastic particles of different sizes into the heating box 5. A material box 76 is set outside the screen pipe 75. The material box 76 stores the screened plastic particles. Solid pipes 78 are connected through both sides inside the material box 76. One end of one solid pipe 78 is connected to one end of one material pipe 6, and one end of the other solid pipe 78 is connected through the inside of the screen pipe 75.

[0026] The sieve tube 75 is embedded and fixedly connected to a sieve plate 79. The sieve plate 79 has a sieve hole diameter smaller than the particle size of the screened plastic particles and a larger length to increase the contact range with the plastic particles, thereby better screening the liquid water. A solid cover 710 is provided on the outside of the sieve plate 79. The internal range of the solid cover 710 is larger than that of the sieve plate 79, which can collect the screened liquid water. The outer surface of the solid cover 710 is fixedly connected to the outer surface of the sieve plate 79. A return pipe 711 is connected through the inside of the sieve plate 79. The return pipe 711 can return the screened liquid water to reduce the loss of liquid water. One end of the return pipe 711 is connected through the inside of the water tank 71.

[0027] A processing unit 77 is provided on the outside of the material bin 76. The processing unit 77 includes an insulated barrel 771. The inner diameter of the insulated barrel 771 is larger than the outer diameter of the material bin 76, and it is made of insulating material. The insulated barrel 771 is fitted onto the outside of the material bin 76. The body of the insulated barrel 771 is fixedly connected to the outer surface of the two side fixed pipes 78. A parallel pipe 772 is connected through the inside of the insulated barrel 771. The number of ends of the parallel pipe 772 is the same as the number of insulated barrels 771, and each end is equipped with a flow valve electrically connected to an external control circuit to control the flow rate of hot air. That is, the hot air flow rate inside the insulated barrel 771 is set to be larger for large plastic particles, and vice versa for small plastic particles. By increasing the flow rate, the heat is increased, so that plastic particles of different sizes can be processed. Different preheating temperatures further shorten the liquefaction time difference between the two. A series pipe 773 runs through the interior of the parallel pipe 772. One end of the series pipe 773 is connected to the exhaust end of the purification device 13, and the other end of the series pipe 773 is connected to the output end of the air pump through a flange. A condenser pipe 774 runs through the interior of both the material box 76 and the insulation tank 771. Water vapor generated inside the material box 76 enters the interior of the insulation tank 771 through the corresponding condenser pipe 774, and is then discharged using airflow and the corresponding condenser pipe 774 of the insulation tank 771. One end of a condenser pipe 774 runs through the interior of the water tank 71. By discharging air containing water vapor into the liquid water, water vapor can be condensed and recovered, further reducing the loss of liquid water.

[0028] A fan blade 775 is rotatably connected inside the parallel pipe 772. The fan blade 775 obtains rotational driving force by contacting the flowing hot air. The shaft end of the fan blade 775 is rotatably connected to the body of the material box 76 and extends into the interior of the material box 76. A flap 776 is fixedly connected to the shaft end of the fan blade 775. The flap 776 can move the screened plastic particles, thereby improving their drying and preheating efficiency and effect. As a preferred method, the flap 776 can be made from an existing spiral fan blade. The outer surface of the flap 776 is rotatably connected to the interior of the material box 76. An inner ring 777 and an outer ring 778 are sleeved on the outside of the shaft end of the fan blade 775. The inner ring 777 and the outer ring 778 are equidistant and staggered. The inner diameter of the outer ring 778 is smaller than the outer diameter of the inner ring 777, thereby forming a wave-shaped airflow channel through the staggered arrangement. The inner ring of the inner ring 777 is fixedly connected to the outer surface of the material box 76, and the outer surface of the outer ring 778 is fixedly connected to the interior of the heat preservation barrel 771.

[0029] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0030] This device employs a complete workflow including water flotation screening, drying and preheating, stratified feeding, vibration leveling, rotary transfer liquefaction, waste gas purification, and heat recovery. All structures work in tandem and are sequentially connected to achieve efficient, uniform, and continuous liquefaction processing of plastic granules. The specific working sequence and structural relationships are as follows: I. Screening of Plastic Particles by Water Flotation After the device is started, the feeding assembly 7 operates first. The water pump inside the water tank 71 pumps liquid water into the water pan 73 through the connecting pipe 72. Pre-crushed plastic particles are put into the water pan 73, and the plastic particles of different sizes are automatically screened by water flotation. The screen tubes 75, which are radially equidistant and axially equidistantly distributed in the water pan 73, will separate the plastic particles into layers according to their size, completing the initial screening. The screen plates 79 embedded in the screen tubes 75 will separate the screened plastic particles from the liquid water a second time. The separated liquid water is collected in the solid cover 710 and then returned to the water tank 71 for recycling through the return pipe 711. The filter screen 74 in the connecting pipe 72 prevents plastic particles from flowing back into the water tank 71, ensuring the stability of the screening process. The screened plastic particles of different sizes are transported to the material box 76 for temporary storage through the solid pipe 78. II. Drying and Preheating of Plastic Granules The screened plastic granules temporarily stored in the material bin 76 then enter the drying and preheating stage of the processing unit 77. The hot air purified by the purification device 13 is transported to the parallel pipe 772 through the series pipe 773, and then enters the inner cavity of the heat preservation barrel 771 that surrounds the material bin 76. The hot air surrounds the material bin 76 to dry and preheat the plastic granules inside. When the hot air flows in the heat preservation barrel 771, it drives the fan blades 775 in the parallel pipe 772 to rotate. The shaft end of the fan blades 775 drives the flap 776 in the material bin 76 to rotate, turning the plastic granules to improve the uniformity of heating. At the same time, the inner ring 777 and the outer ring 778 in the heat preservation barrel 771 are equidistantly staggered to form a wave-shaped airflow channel, which prolongs the contact time between the hot air and the material bin 76 and enhances the preheating and drying effect. The water vapor generated in the material bin 76 is discharged through the condenser pipe 774 and finally flows back to the water tank 71 to complete the water vapor recovery. 3. Particles are introduced into the heating box in ascending order of particle size. After drying and preheating, plastic granules of different sizes are transported sequentially into the hot box 5 of the liquefaction mechanism through the fixed pipe 78 on one side of the material box 76 and then through the material pipe 6, in order from smallest to largest size. The fixed cone 10 inside the hot box 5 arranges the granules of different sizes in layers: small-sized plastic granules are located at the bottom of the cone 10, followed by medium-sized and large-sized plastic granules, forming a layered structure with smaller granules at the bottom and larger granules at the top, laying the foundation for uniform liquefaction in the future. IV. Gradually vibrate and level the particles to separate them into layers. After each batch of plastic granules of different sizes is added, the vibrating assembly 9 will start immediately to vibrate and level the granules in the hot box 5. When the rotating plate 3 rotates, the outer strip 98 rotates synchronously. The strip 98 abuts against the block 97 through the chamfer, pushing the spiral strip 96 to slide and compressing the tension spring 99. The spiral strip 96 and the rotating shaft 95 are spirally engaged, driving the rotating shaft 95 to rotate in both directions, which in turn drives the cam 94 to rotate intermittently. When the cam 94 rotates, it abuts against the chamfered end of the guide strip 92, pushing the guide strip 92 to drive the top plate 93 to move up and down repeatedly. The top plate 93 repeatedly hits the guard plate 8, causing the hot box 5 to vibrate. The sliding strip 15 on the outside of the hot box 5 slides up and down along the sliding rod 16 in the sliding groove 14. The compression spring 17 provides the reset force, allowing the hot box 5 to vibrate smoothly, ensuring that the layers of plastic granules of different sizes inside remain horizontal, and avoiding uneven granule accumulation that affects the liquefaction effect. V. Transfer plate 3 for conveying and liquefaction processing, and waste gas purification After the granules are layered and vibrated to level, the rotating plate 3 rotates at a constant speed around the fixed rod 2, driving multiple hot boxes 5 to be transferred in sequence to achieve continuous liquefaction processing. The heating structure of the hot box 5 heats and liquefies the layered plastic granules inside. The filter holes of the cone 10 allow the excess heat of the smaller granules below to be transferred upwards, providing supplemental heat to the larger granules, reducing the time difference between the liquefaction of large and small granules, and improving the overall liquefaction efficiency. The toxic waste gas generated during the plastic liquefaction process is transported to the purification device 13 through the gas pipe 11 and the spring tube 12. The purification device 13 treats the waste gas to render it harmless, ensuring production safety. VI. Heat Recovery and Recycling The hot exhaust gas treated by the purification device 13 is transported back to the heat preservation tank 771 through the series pipe 773 and the parallel pipe 772, and is used as a heat source for drying and preheating in a cycle to achieve efficient heat recovery; at the same time, the liquefied plastic melt is discharged through the material pipe 6 on the other side, completing the entire plastic liquefaction process.

[0031] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A processing apparatus for plastic liquefaction, comprising a base (1), characterized in that: A liquefaction mechanism is provided on the outside of the base (1). The liquefaction mechanism includes a fixed rod (2). One end of the fixed rod (2) is fixedly connected to the outer surface of the base (1). A rotating plate (3) is rotatably connected through the outer surface of the fixed rod (2). A groove (4) is formed at equal angles on the outer surface of the rotating plate (3). A heat box (5) is provided inside the groove (4). A material pipe (6) is connected through both sides of the heat box (5). A protective plate (8) is fixedly connected to the outer surface of the material pipe (6) on the other side. The outer surface of the protective plate (8) is fixedly connected to the outer surface of the heat box (5). The inner surface of the heat box (5) is... A cone (10) is fixedly connected to the heat box (5). An air pipe (11) is connected through the interior of the heat box (5). One end of the air pipe (11) is connected to a spring tube (12). One end of the spring tube (12) is connected through a purification device (13). The outer surface of the purification device (13) is fixedly connected to the other end of the fixed rod (2). A sliding groove (14) is provided inside the groove (4). A sliding strip (15) is slidably connected inside the sliding groove (14). The outer surface of the sliding strip (15) is slidably connected to the interior of the groove (4). One end of the sliding strip (15) is fixedly connected to the outer surface of the heat box (5).

2. The processing apparatus for plastic liquefaction according to claim 1, characterized in that: The slide bar (15) has a slide rod (16) slidably connected through it. Both ends of the slide rod (16) are fixedly connected to the inside of the slide groove (14). A compression spring (17) is sleeved on the outside of the slide rod (16). Both ends of the compression spring (17) are fixedly connected to the inside of the slide groove (14) and the outer surface of the slide bar (15), respectively.

3. The processing apparatus for plastic liquefaction according to claim 1, characterized in that: The outer side of the guard plate (8) is provided with a vibration assembly (9). The vibration assembly (9) includes a frame (91). The outer surface of the frame (91) is fixedly connected to the outer surface of the base (1). The body of the frame (91) is slidably connected to a guide bar (92). One end of the guide bar (92) is fixedly connected to a top plate (93). The outer surface of the top plate (93) is movably connected to the outer surface of the guard plate (8). The other end of the guide bar (92) is movably connected to a cam (94). The body of the cam (94) is fixedly connected to a rotating shaft (95). The outer surface of the rotating shaft (95) is rotatably connected to the body of the frame (91).

4. The processing apparatus for plastic liquefaction according to claim 3, characterized in that: The main body of the rotating shaft (95) is movably connected to a spiral strip (96). One end of the spiral strip (96) is fixedly connected to a stop block (97). The outer surface of the stop block (97) is movably connected to a lever (98). One end of the lever (98) is fixedly connected to the outer surface of the rotating plate (3). A tension spring (99) is sleeved on the outside of the spiral strip (96). The two ends of the tension spring (99) are fixedly connected to the outer surfaces of the stop block (97) and the frame (91), respectively.

5. The processing apparatus for plastic liquefaction according to claim 1, characterized in that: A feeding assembly (7) is provided on the outside of the material pipe (6) on one side. The feeding assembly (7) includes a water tank (71). The outer surface of the water tank (71) is fixedly connected to the outer surface of the base (1). A connecting pipe (72) is connected through the inside of the water tank (71). A water pan (73) is connected through one end of the connecting pipe (72). A filter screen (74) is provided inside one end of the connecting pipe (72). A screen pipe (75) is connected through the inside of the water pan (73). The screen pipe (75) is arranged radially at equal angles and axially at equal distances. A material box (76) is provided on the outside of the screen pipe (75). A solid pipe (78) is connected through both sides inside the material box (76). One end of the solid pipe (78) on one side is connected to one end of the material pipe (6) on one side. One end of the solid pipe (78) on the other side is connected through the inside of the screen pipe (75).

6. The processing apparatus for plastic liquefaction according to claim 5, characterized in that: The screen tube (75) is embedded and fixedly connected to a screen plate (79). A fixed cover (710) is provided on the outside of the screen plate (79). The outer surface of the fixed cover (710) is fixedly connected to the outer surface of the screen plate (79). A return pipe (711) is connected through the inside of the screen plate (79). One end of the return pipe (711) is connected through the inside of the water tank (71).

7. The processing apparatus for plastic liquefaction according to claim 5, characterized in that: The material box (76) is provided with a processing unit (77) on its outside. The processing unit (77) includes a heat preservation barrel (771). The heat preservation barrel (771) is sleeved on the outside of the material box (76). The body of the heat preservation barrel (771) is fixedly connected to the outer surface of the two side fixed pipes (78). The inside of the heat preservation barrel (771) is connected to a parallel pipe (772). The inside of the parallel pipe (772) is connected to a series pipe (773). One end of the series pipe (773) is connected to the exhaust end of the purification device (13). The inside of both the material box (76) and the heat preservation barrel (771) is connected to a condenser pipe (774). One end of the condenser pipe (774) is connected to the inside of the water tank (71).

8. The processing apparatus for plastic liquefaction according to claim 7, characterized in that: The parallel pipe (772) is rotatably connected to a fan blade (775). The shaft end of the fan blade (775) is rotatably connected to the body of the material box (76) and extends into the interior of the material box (76). The shaft end of the fan blade (775) is fixedly connected to a flap (776). The outer surface of the flap (776) is rotatably connected to the interior of the material box (76). An inner ring (777) and an outer ring (778) are sleeved on the outside of the shaft end of the fan blade (775). The inner ring (777) and the outer ring (778) are equidistant and staggered. The inner ring (777) is fixedly connected to the outer surface of the material box (76). The outer surface of the outer ring (778) is fixedly connected to the interior of the heat preservation barrel (771).

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