A plastic extruder

Abstract

The present invention discloses a plastic extruder, which relates to the technical field of plastic processing, and comprises a machine body, a feed hopper for storing plastic particles is provided on the top of the machine body, a blowing mechanism for removing water vapor and dust on the surface of the plastic particles is provided between the feed hopper and the machine body, an opening and closing mechanism for controlling the intermittent falling of the plastic particles is provided at the bottom of the feed hopper, a filtering mechanism for collecting dust is provided outside the blowing mechanism, an impact mechanism for preventing clogging of plastic particles is provided outside the feed hopper, and a rotating mechanism for preventing adhesion of plastic particles is provided inside the feed hopper. The heated air in the first shell rises into the second shell again to preheat the plastic particles along the spiral slide, and the heated air in the first shell rises into the second shell. Through the two-stage dehydration treatment, quality problems such as bubbles and holes caused by water vaporization in the melting process can be effectively reduced, thereby improving the density and appearance quality of the finished product.

Description

Technical Field

[0001] The invention relates to the technical field of plastic processing, in particular to a plastic extruder. Background Art

[0002] Plastic extruders, a key piece of equipment widely used in plastics processing and manufacturing, have become an indispensable tool in the modern plastics industry after years of technological innovation and practical application. Traditional plastic extruders consist of a die, screw, extrusion barrel, and various auxiliary equipment. The screw applies pressure and shear to the material, forcing it to flow under high temperature and pressure into a continuous molten state. The extruder then passes through the die to form the desired product.

[0003] However, in practice, the heating process is a key factor affecting the performance of plastic extruders. When heating plastic pellets to a molten state, it is necessary to fully and effectively remove moisture and residual air from the pellet surface to prevent bubbles and impurities from forming during subsequent molding, which can affect the quality and stability of the finished product. Traditional equipment based on conduction or convection heating suffers from deficiencies in heating uniformity and efficiency, resulting in high energy consumption and insufficient production efficiency. Furthermore, insufficient heating speeds can affect production speed and product quality.

[0004] Therefore, the present invention provides a plastic extruder to remedy and improve the deficiencies of the prior art. Summary of the Invention

[0005] In view of the above problems, the present invention provides a plastic extruder that can effectively solve the problem in the prior art that plastic particles contain moisture, resulting in unqualified finished products. In order to achieve the above purpose, the embodiment of the present application provides the following technical solutions:

[0006] The present invention discloses a plastic extruder, comprising a machine body, a feed hopper for storing plastic particles provided on the top of the machine body, an air blowing mechanism for removing moisture and dust from the surface of the plastic particles provided between the feed hopper and the machine body, an opening and closing mechanism for controlling the intermittent falling of the plastic particles provided at the bottom of the feed hopper, a filtering mechanism for collecting dust provided outside the air blowing mechanism, an impact mechanism for preventing blockage of the plastic particles provided outside the feed hopper, and a rotating mechanism for preventing adhesion of the plastic particles provided inside the feed hopper;

[0007] The blowing mechanism includes a conical first shell fixedly connected to the top of the machine body, an inverted second shell fixedly connected to the top of the first shell, the top of the second shell fixedly connected to the bottom of the feed hopper, a rotating shaft rotatably connected inside the second shell, and the rotating shaft extends into the inside of the first shell, and a heating plate is symmetrically fixedly connected to the outside of the rotating shaft.

[0008] Furthermore, the blowing mechanism also includes a spiral slide fixedly connected to the inner wall of the second shell, a fan is fixedly connected to the outside of the first shell, and the fan is communicated with the inside of the first shell, and an air outlet is opened on the outside of the second shell, and the air outlet is located on the side of the second shell near the top.

[0009] Furthermore, the opening and closing mechanism includes a cover plate fixedly connected to the top of the second shell, a first through hole is provided on the surface of the cover plate, and a rotating shaft passes through the cover plate and extends to the top of the cover plate, a rotating plate is rotatably connected to the upper surface of the cover plate, a second through hole is provided on the surface of the rotating plate, and the second through hole is consistent in size with the first through hole, and the rotating plate is fixedly connected to the top extended end of the rotating shaft.

[0010] Furthermore, the filtering mechanism includes a shell fixedly connected to the air outlet, a partition is fixedly connected to the inside of the shell, a filter bag is fixedly connected to the lower surface of the partition, and an exhaust port is opened on the side of the shell, and the exhaust port is located above the partition.

[0011] Furthermore, the filtering mechanism also includes a rotating rod rotatably connected to the outer shell, and the rotating rod extends vertically into the interior of the filter bag, a metal chain for hitting the filter bag is fixedly connected to the surface of the rotating rod, a connecting rod is fixedly connected to the top of the rotating rod, and a torsion spring is also sleeved on the outside of the rotating rod, the torsion spring is located outside the outer shell, one end of the torsion spring is fixedly connected to the surface of the rotating rod, and the other end of the torsion spring is fixedly connected to the outer surface of the outer shell.

[0012] Furthermore, the connecting rod is rotatably connected to an L-shaped rod at one end away from the rotating rod, the vertical section of the L-shaped rod is slidably connected to a guide rod, and one end of the guide rod is fixedly connected to the surface of the feed hopper.

[0013] Furthermore, the impact mechanism includes a plurality of mounting rods rotatably connected to the outside of the feed hopper, a hammer for impacting the feed hopper is fixedly connected to the bottom of the mounting rod, a triangular block is fixedly connected to the top of the mounting rod, and a V-shaped elastic sheet is fixedly connected to the side of the triangular block close to the feed hopper.

[0014] Furthermore, the top of the feed hopper is fixedly connected to a support frame, and both ends of the support frame are vertically slidably connected to slide rods, the bottom of the slide rod is fixedly connected to a circular ring, the inner wall of the circular ring is fixedly connected to a roller, and the roller is rollingly connected to the inclined surface of the triangular block, the top of the slide rod is fixedly connected to a horizontal plate, and the upper surface of the horizontal plate is symmetrically fixedly connected to an arc plate, the top of the support frame is fixedly connected to a motor, and the output end of the motor is symmetrically fixedly connected to an extrusion wheel for pushing the arc plate, and a first spring is also sleeved on the outside of the slide rod, and the first spring is located between the support frame and the horizontal plate.

[0015] Furthermore, the top of the feed hopper is rotatably connected to a plurality of swing arms, and the bottom of each swing arm is fixedly connected to a limit block for preventing the movement of the triangular block, and the limit block has an inclined surface on the side close to the triangular block, and the swing arm extends above the ring away from one end of the feed hopper.

[0016] Furthermore, the rotating mechanism includes an extension shaft fixedly connected to the output end of the motor, and the bottom of the extension shaft is fixedly connected to the top of the rotating shaft, and the surface of the extension shaft is symmetrically fixedly connected with cross bars, and each cross bar is slidably sleeved with a moving rod at one end away from the extension shaft, and the moving rod is fixedly connected to a scraper that contacts the inside of the feed hopper at one end away from the cross bar, and the inner wall of the feed hopper is fixedly connected with a plurality of protrusions in a ring shape, and a second spring for pushing the moving rod to reset is fixedly connected in a cavity near one end of the cross bar.

[0017] Beneficial effects:

[0018] 1. This device is equipped with an air blowing mechanism. When the plastic particles fall from the spiral slide into the first shell and come into contact with the heating plate, the plastic particles are heated to remove moisture attached to the surface of the plastic particles. The heated air in the first shell then rises into the second shell to preheat the plastic particles along the spiral slide. The heated air in the first shell rises into the second shell to preheat the subsequently falling plastic particles, thus realizing the secondary utilization of heat, reducing energy waste, and improving the overall thermal efficiency. Through the two-stage dehydration treatment, it can effectively reduce quality problems such as bubbles and holes caused by water vaporization during the melting process, and improve the density and appearance quality of the finished product.

[0019] 2. This device is provided with a first shell and a second shell. After the plastic particles fall into the first shell, they come into contact with the heating plate, which directly heats the surface of the plastic particles and evaporates the moisture rapidly. The rising hot air further dries and preheats the plastic particles on the spiral slide, forming a "dynamic drying" process. Since the plastic particles have been preheated, the temperature rise required when entering the extruder body is smaller, thereby reducing the energy consumption and working intensity of the main heating system of the extruder.

[0020] 3. This device is equipped with an impact mechanism. When the plastic particles enter the extruder body from the feed hopper, the hammer continuously hits the side wall of the feed hopper. The impact action helps to break the agglomeration between the plastic particles, making the particles more dispersed, and preventing the blockage caused by accumulation and adhesion of plastic particles during the feeding process, ensuring that the material continues to enter the extruder smoothly.

[0021] 4. This device is equipped with a rotating mechanism to prevent the accumulation of plastic particles in the feed hopper, ensure the continuous supply of materials, and avoid production line shutdown or efficiency reduction due to material blockage. At the same time, through the stirring effect, plastic particles of different types or sizes can be distributed more evenly, which is especially important when multiple raw materials need to be mixed, and helps to ensure the quality consistency of the final product. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention from the first viewing angle.

[0024] Figure 2 This is a three-dimensional structural diagram from a second viewing angle of the present invention.

[0025] Figure 3 For the present invention Figure 2 A magnified view of the structure at point A.

[0026] Figure 4 It is a cross-sectional view of the blowing mechanism in the present invention.

[0027] Figure 5 It is a three-dimensional structural diagram of the filtering mechanism in the present invention.

[0028] Figure 6 It is a longitudinal cross-sectional view of the filtering mechanism in the present invention.

[0029] Figure 7 For the present invention Figure 6 A magnified view of the structure at point B.

[0030] Figure 8 It is a three-dimensional structural diagram of the rotating mechanism in the present invention.

[0031] Figure 9 Schematic diagram of the connection between the cross bar and the movable bar in the present invention.

[0032] Figure 10 Exploded view of the opening and closing mechanism of the present invention.

[0033] The numbers in the figure represent: 10, machine body; 20, feed hopper; 30, blowing mechanism; 301, first shell; 302, second shell; 303, spiral slide; 304, rotating shaft; 305, heating plate; 306, fan; 307, air outlet; 40, opening and closing mechanism; 401, cover plate; 402, first through hole; 403, rotating plate; 404, second through hole; 50, filtering mechanism; 501, shell; 502, partition; 503, filter bag; 504, rotating rod; 505, metal chain; 506, connecting rod; 507, L-shaped rod; 508, Guide rod; 509, torsion spring; 510, exhaust port; 60, impact mechanism; 601, mounting rod; 602, hammer; 603, triangular block; 604, elastic sheet; 605, ring; 606, roller; 607, slide bar; 608, support frame; 609, cross plate; 610, first spring; 611, arc plate; 612, motor; 613, extrusion wheel; 614, swing rod; 615, limit block; 70, rotating mechanism; 701, extension shaft; 702, cross bar; 703, moving rod; 704, scraper; 705, bump; 706, second spring. DETAILED DESCRIPTION

[0034] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] The present invention will be further described below with reference to the embodiments.

[0036] See Figures 1 to 10 A plastic extruder of this embodiment includes a body 10, a feed hopper 20 for storing plastic particles is provided on the top of the body 10, a blowing mechanism 30 for removing water vapor and dust on the surface of the plastic particles is provided between the feed hopper 20 and the body 10, an opening and closing mechanism 40 for controlling the intermittent falling of the plastic particles is provided at the bottom of the feed hopper 20, a filtering mechanism 50 for collecting dust is provided outside the blowing mechanism 30, an impact mechanism 60 for preventing plastic particles from being blocked is provided outside the feed hopper 20, and a rotating mechanism 70 for preventing plastic particles from adhering is provided inside the feed hopper 20.

[0037] The blowing mechanism 30 includes a conical first shell 301 fixedly connected to the top of the body 10, an inverted second shell 302 fixedly connected to the top of the first shell 301, the top of the second shell 302 is fixedly connected to the bottom of the feed hopper 20, a rotating shaft 304 is rotatably connected inside the second shell 302, and the rotating shaft 304 extends to the inside of the first shell 301, and a heating plate 305 is symmetrically fixedly connected to the outside of the rotating shaft 304, and the heating plate 305 is electrically heated.

[0038] The blowing mechanism 30 also includes a spiral slide 303 fixedly connected to the inner wall of the second shell 302. A fan 306 is fixedly connected to the outside of the first shell 301, and the fan 306 is interconnected with the inside of the first shell 301. An air outlet 307 is opened on the outside of the second shell 302, and the air outlet 307 is located on the side of the second shell 302 near the top.

[0039] During the specific operation, the plastic particles are stored in the feed hopper 20, and the plastic particles fall from the feed hopper 20 to the spiral slide 303 inside the second shell 302. The plastic particles spirally descend along the spiral slide 303 into the first shell 301, and the plastic particles falling into the first shell 301 are heated by the heating plate 305. The heating plate 305 is driven to rotate by the rotating shaft 304. The rotating heating plate 305 stirs the plastic particles in the first shell 301, so that the plastic particles are heated more evenly. At the same time, the hot air in the first shell 301 rises to the second shell 302, and the hot air rising to the second shell 302 stirs the plastic particles falling from the spiral slide 303. The plastic particles are preheated, which realizes the secondary utilization of heat, reduces energy waste, and improves the overall thermal efficiency. Through the two-stage dehydration treatment, it can effectively reduce the quality problems such as bubbles and holes caused by water vaporization in the melting process, and improve the density and appearance quality of the finished product. In the process of heating and dehumidifying the plastic particles, the external air is blown into the second shell 302 through the fan 306, and the air entering the second shell 302 is mixed with the rising hot air. The mixed airflow blows away the dust from the plastic particles falling from the spiral slide 303, and the blown dust and airflow are discharged from the air outlet 307. The airflow containing dust enters the filter mechanism 50.

[0040] The opening and closing mechanism 40 includes a cover plate 401 fixedly connected to the top of the second shell 302, a first through hole 402 is provided on the surface of the cover plate 401, and the rotating shaft 304 passes through the cover plate 401 and extends to the top of the cover plate 401, a rotating plate 403 is rotatably connected to the upper surface of the cover plate 401, a second through hole 404 is provided on the surface of the rotating plate 403, and the second through hole 404 is the same size as the first through hole 402, and the rotating plate 403 is fixedly connected to the top extended end of the rotating shaft 304.

[0041] During specific operation, before the plastic particles in the feed hopper 20 fall into the spiral slide 303 inside the second shell 302, the rotating plate 403 is driven to rotate by the rotating shaft 304. When the second through hole 404 in the rotating plate 403 coincides with the first through hole 402 in the cover plate 401, the plastic particles can pass through the second through hole 404 and the first through hole 402 into the spiral slide 303 inside the second shell 302. When the second through hole 404 in the rotating plate 403 is staggered with the first through hole 402 in the cover plate 401, the plastic particles cannot pass through the second through hole 404 and the first through hole 402 into the spiral slide 303 inside the second shell 302, thereby realizing intermittent entry of the plastic particles into the spiral slide 303, ensuring that each batch of particles can obtain sufficient residence time and uniform heating in the spiral slide 303, which helps to more effectively remove moisture and residual air on the surface of the particles and improve product quality in subsequent processing steps.

[0042] The filtering mechanism 50 includes a shell 501 fixedly connected to the air outlet 307, a partition 502 fixedly connected to the inside of the shell 501, a filter bag 503 fixedly connected to the lower surface of the partition 502, an exhaust port 510 is opened on the side of the shell 501, and the exhaust port 510 is located above the partition 502, and a collection frame for collecting dust is slidably connected to the bottom of the shell 501.

[0043] The filtering mechanism 50 also includes a rotating rod 504 rotatably connected to the outer shell 501, and the rotating rod 504 extends vertically to the inside of the filter bag 503. A metal chain 505 for hitting the filter bag 503 is fixedly connected to the surface of the rotating rod 504, and a connecting rod 506 is fixedly connected to the top of the rotating rod 504. A torsion spring 509 is also sleeved on the outside of the rotating rod 504. The torsion spring 509 is located outside the outer shell 501, and one end of the torsion spring 509 is fixedly connected to the surface of the rotating rod 504, and the other end of the torsion spring 509 is fixedly connected to the outer surface of the outer shell 501.

[0044] The connecting rod 506 is rotatably connected to an L-shaped rod 507 at one end away from the rotating rod 504 . The vertical section of the L-shaped rod 507 is slidably connected to a guide rod 508 . One end of the guide rod 508 is fixedly connected to the surface of the feed hopper 20 .

[0045] During specific operation, the blown dust and air flow are discharged from the air outlet 307. After the air flow containing dust enters the filter mechanism 50, the air flow passes through the filter bag 503, and the dust in the air flow is blocked by the filter bag 503. The filtered air flow passes through the filter bag 503 and is discharged from the exhaust port 510 above the partition 502. When the mounting rod 601 in the impact mechanism 60 rotates, the mounting rod 601 pushes the L-shaped rod 507 to move along the guide rod 508 away from the feed hopper 20. When the L-shaped rod 507 moves horizontally, the L-shaped rod 507 drives the rotating rod 504 to rotate in the filter bag 503 through the connecting rod 506. When the rotating rod 504 rotates, it drives the metal chain 505 to hit the filter bag 503. The hit filter bag 503 shakes, thereby shaking off the dust attached to the filter bag 503, and the shaken-off dust is gathered in the collection frame at the bottom of the outer shell 501.

[0046] When the rotating rod 504 rotates, the torsion spring 509 is twisted and stored. When the installation rod 601 is separated from the L-shaped rod 507, the torsion spring 509 drives the rotating rod 504 to rotate in the opposite direction. When the rotating rod 504 rotates in the opposite direction, it drives the metal chain 505 to hit the filter bag 503.

[0047] The impact mechanism 60 includes a plurality of mounting rods 601 rotatably connected to the outside of the feed hopper 20, a hammer 602 for impacting the feed hopper 20 is fixedly connected to the bottom of the mounting rod 601, a triangular block 603 is fixedly connected to the top of the mounting rod 601, and a V-shaped elastic sheet 604 is fixedly connected to the side of the triangular block 603 close to the feed hopper 20.

[0048] The top of the feed hopper 20 is fixedly connected to a support frame 608, and both ends of the support frame 608 are vertically slidably connected to slide bars 607. The bottom of the slide bar 607 is fixedly connected to a circular ring 605, and the inner wall of the circular ring 605 is fixedly connected to a roller 606. The roller 606 is connected to the inclined surface of the triangular block 603 in a rolling manner. The top of the slide bar 607 is fixedly connected to a horizontal plate 609, and the upper surface of the horizontal plate 609 is symmetrically fixedly connected to an arc plate 611. The top of the support frame 608 is fixedly connected to a motor 612, and the output end of the motor 612 is symmetrically fixedly connected to an extrusion wheel 613 for pushing the arc plate 611. The outside of the slide bar 607 is also sleeved with a first spring 610, and the first spring 610 is located between the support frame 608 and the horizontal plate 609.

[0049] There are also multiple swing rods 614 rotatably connected to the top of the feed hopper 20. A limit block 615 is fixedly connected to the bottom of each swing rod 614 for blocking the movement of the triangular block 603. The limit block 615 has an inclined surface on the side close to the triangular block 603, and the swing rod 614 extends to above the ring 605 away from one end of the feed hopper 20.

[0050] During specific operation, when the plastic particles fall from the feed hopper 20, the extrusion wheel 613 is driven to rotate by the motor 612, and the extrusion wheel 613 alternately rolls on the surface of the arc plate 611. In the process of the extrusion wheel 613 moving from the lower part to the higher part of the arc plate 611, the horizontal plate 609 is squeezed downward, and the horizontal plate 609 drives the ring 605 to move downward synchronously through the slide bar 607. At this time, the first spring 610 is compressed and stored. The downward moving ring 605 moves along the inclined surface of the triangular block 603 through the roller 606, thereby driving the mounting rod 601 to rotate, so that the hammer 602 at the bottom of the mounting rod 601 is away from the outside of the feed hopper 20, and the triangular block 603 at the top of the mounting rod 601 rotates in the direction close to the feed hopper 20, realizing the compression and storage of the V-shaped elastic sheet 604, and the triangular block 603 enters the other side of the limit block 615 along the inclined surface of the limit block 615, and the position of the mounting rod 601 is fixed by the swing rod 614 through the limit block 615.

[0051] As the extrusion wheel 613 moves from the high position to the low position of the arc-shaped plate 611, the compressed first spring 610 pushes the horizontal plate 609 to move upward. At this time, the ring 605 is driven to move upward synchronously through the slide bar 607. The upward-moving ring 605 pushes the swing bar 614 to rotate upward, so that the limit block 615 at the bottom of the swing bar 614 releases the fixation of the position of the mounting rod 601. Then, under the elastic force of the elastic sheet 604, the hammer 602 at the bottom of the mounting rod 601 quickly hits the side wall of the feed hopper 20. The hammer 602 continuously hits the side wall of the feed hopper 20. The impact action helps to break the agglomeration between the plastic particles, making the particles more dispersed, and preventing the plastic particles from clogging due to accumulation and adhesion during the feeding process, thereby ensuring that the material continues to smoothly enter the extruder.

[0052] The rotating mechanism 70 includes an extension shaft 701 fixedly connected to the output end of the motor 612, and the bottom of the extension shaft 701 is fixedly connected to the top of the rotating shaft 304. The surface of the extension shaft 701 is symmetrically fixedly connected with a cross bar 702. Each cross bar 702 is slidably sleeved with a moving rod 703 at one end away from the extension shaft 701. The moving rod 703 is fixedly connected to a scraper 704 that contacts the inside of the feed hopper 20 at one end away from the cross bar 702. The inner wall of the feed hopper 20 is fixedly connected with a plurality of protrusions 705 in a ring shape. A second spring 706 for pushing the moving rod 703 to reset is fixedly connected in the cavity of the moving rod 703 near one end of the cross bar 702.

[0053] During specific operation, the motor 612 drives the extension shaft 701 to rotate, and the extension shaft 701 drives the cross bar 702 and the moving rod 703 to stir the plastic particles in the feed hopper 20 to prevent the accumulation of plastic particles in the feed hopper 20, ensure the continuous supply of materials, and avoid production line shutdown or efficiency reduction due to material blockage. While rotating, the scraper 704 is squeezed by the protrusion 705 to make the moving rod 703 move along the outside of the cross bar 702 toward the extension shaft 701, and at the same time compress the second spring 706 to accumulate force. When the scraper 704 disengages from the protrusion 705, the compressed second spring 706 pushes the moving rod 703 and the scraper 704 to move away from the extension shaft 701. The scraper 704 continuously hits the inner wall of the feed hopper 20 to achieve the shaking of the feed hopper 20, further preventing the blockage caused by accumulation and adhesion of plastic particles during the feeding process. When the extension shaft 701 rotates, it synchronously drives the rotating shaft 304 of the blowing mechanism 30 to rotate.

[0054] Working principle:

[0055] When the plastic particles fall from the feed hopper 20, the motor 612 drives the impact mechanism 60 to work and continuously hit the side wall of the feed hopper 20. The impact action helps to break the agglomeration between the plastic particles and make the particles more dispersed. The impact mechanism 60 drives the rotating mechanism 70 to stir the plastic particles first to prevent the accumulation of plastic particles in the feed hopper 20, ensuring the continuous supply of materials. At the same time, the scraper 704 continuously hits the inner wall of the feed hopper 20 to achieve the shaking of the feed hopper 20, further preventing the blockage caused by accumulation and adhesion of plastic particles during the feeding process. Then, the opening and closing mechanism 40 is used to control the intermittent entry of the plastic particles into the blowing mechanism 30, ensuring that each batch of particles can obtain sufficient residence time and uniform heating in the spiral slide 303. The blowing mechanism 30 is used to dehumidify the plastic particles and remove dust. The dust is filtered out by the filtering mechanism 50. At the same time, the metal chain 505 is driven by the mounting rod 601 to remove the dust attached to the filter bag 503, avoiding the problem of dust clogging the filter bag 503 and reducing the filtration efficiency.

[0056] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A plastic extruder, characterized in that: The invention comprises a machine body (10), wherein a feed hopper (20) for storing plastic particles is provided on the top of the machine body (10), an air blowing mechanism (30) for removing water vapor and dust from the surface of the plastic particles is provided between the feed hopper (20) and the machine body (10), an opening and closing mechanism (40) for controlling the intermittent falling of the plastic particles is provided at the bottom of the feed hopper (20), a filtering mechanism (50) for collecting dust is provided outside the air blowing mechanism (30), an impact mechanism (60) for preventing the plastic particles from being blocked is provided outside the feed hopper (20), and a rotating mechanism (70) for preventing the plastic particles from adhering is provided inside the feed hopper (20); The blowing mechanism (30) comprises a conical first shell (301) fixedly connected to the top of the machine body (10); an inverted second shell (302) is fixedly connected to the top of the first shell (301); the top of the second shell (302) is fixedly connected to the bottom of the feed hopper (20); a rotating shaft (304) is rotatably connected inside the second shell (302), and the rotating shaft (304) extends into the interior of the first shell (301); and a heating plate (305) is symmetrically fixedly connected to the outside of the rotating shaft (304); The blowing mechanism (30) further comprises a spiral slideway (303) fixedly connected to the inner wall of the second shell (302); a fan (306) is fixedly connected to the outside of the first shell (301), and the fan (306) is communicated with the inside of the first shell (301); an air outlet (307) is provided on the outside of the second shell (302), and the air outlet (307) is located on the side of the second shell (302) near the top; The opening and closing mechanism (40) comprises a cover plate (401) fixedly connected to the top of the second shell (302), a first through hole (402) being provided on the surface of the cover plate (401), and a rotating shaft (304) passing through the cover plate (401) and extending to the top of the cover plate (401), a rotating plate (403) being rotatably connected to the upper surface of the cover plate (401), a second through hole (404) being provided on the surface of the rotating plate (403), and the second through hole (404) being the same size as the first through hole (402), and the rotating plate (403) being fixedly connected to the top extension end of the rotating shaft (304); The filtering mechanism (50) comprises a housing (501) fixedly connected to the air outlet (307); a partition (502) is fixedly connected inside the housing (501); a filter bag (503) is fixedly connected to the lower surface of the partition (502); an exhaust port (510) is provided on the side of the housing (501), and the exhaust port (510) is located above the partition (502); The impact mechanism (60) comprises a plurality of mounting rods (601) rotatably connected to the outside of the feed hopper (20), a hammer (602) for impacting the feed hopper (20) being fixedly connected to the bottom of the mounting rod (601), a triangular block (603) being fixedly connected to the top of the mounting rod (601), and a V-shaped elastic piece (604) being fixedly connected to the side of the triangular block (603) close to the feed hopper (20); The rotating mechanism (70) includes an extension shaft (701) fixedly connected to the output end of the motor (612), and the bottom of the extension shaft (701) is fixedly connected to the top of the rotating shaft (304), and the surface of the extension shaft (701) is symmetrically fixedly connected with a cross bar (702), and each cross bar (702) is slidably sleeved with a moving rod (703) at one end away from the extension shaft (701), and the moving rod (703) is fixedly connected to a scraper (704) that contacts the inside of the feed hopper (20) at one end away from the cross bar (702), and the inner wall of the feed hopper (20) is fixedly connected with a plurality of protrusions (705) in an annular shape, and a second spring (706) for pushing the moving rod (703) to return is fixedly connected in a cavity near one end of the cross bar (702).

2. A plastic extruder according to claim 1, characterized in that, The filtering mechanism (50) further comprises a rotating rod (504) rotatably connected to the housing (501), and the rotating rod (504) vertically extends into the interior of the filter bag (503), a metal chain (505) for striking the filter bag (503) is fixedly connected to the surface of the rotating rod (504), a connecting rod (506) is fixedly connected to the top of the rotating rod (504), and a torsion spring (509) is sleeved on the outside of the rotating rod (504), the torsion spring (509) is located outside the housing (501), one end of the torsion spring (509) is fixedly connected to the surface of the rotating rod (504), and the other end of the torsion spring (509) is fixedly connected to the outer surface of the housing (501).

3. A plastic extruder according to claim 2, characterized in that, One end of the connecting rod (506) away from the rotating rod (504) is rotatably connected to an L-shaped rod (507), and a vertical section of the L-shaped rod (507) is slidably connected to a guide rod (508), and one end of the guide rod (508) is fixedly connected to the surface of the feed hopper (20).

4. A plastic extruder according to claim 1, characterized in that, The top of the feed hopper (20) is fixedly connected to a support frame (608), and both ends of the support frame (608) are vertically slidably connected to slide bars (607). The bottom of the slide bar (607) is fixedly connected to a circular ring (605), and the inner wall of the circular ring (605) is fixedly connected to a roller (606). The roller (606) is rollingly connected to the inclined surface of the triangular block (603). The top of the slide bar (607) is fixedly connected to a horizontal plate (609), and the upper surface of the horizontal plate (609) is symmetrically fixedly connected to an arc plate (611). The top of the support frame (608) is fixedly connected to a motor (612), and the output end of the motor (612) is symmetrically fixedly connected to an extrusion wheel (613) for pushing the arc plate (611). The outside of the slide bar (607) is also sleeved with a first spring (610), and the first spring (610) is located between the support frame (608) and the horizontal plate (609).

5. A plastic extruder according to claim 4, characterized in that, The top of the feed hopper (20) is also rotatably connected to a plurality of swinging rods (614), and the bottom of each swinging rod (614) is fixedly connected to a limit block (615) for blocking the movement of the triangular block (603), and the limit block (615) is provided with an inclined surface on the side close to the triangular block (603), and the swinging rod (614) extends from one end of the feed hopper (20) to above the ring (605).

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