Plastic particle feeding device

Abstract

The invention provides a plastic particle feeding device, and relates to the field of plastic particles. The plastic particle feeding device comprises a hopper arranged at a feeding outlet of an extruder, a quantitative feeding mechanism for rotationally and quantitatively feeding plastic raw materials is arranged in the hopper, a vibration mechanism for vertically vibrating to realize blockage prevention is arranged in the hopper, and the quantitative feeding mechanism moves vertically by rotationally extruding the vibration mechanism. According to the plastic particle feeding device, plastic fragments are fed into the hopper, corresponding batching reagents are placed in the powder storage cavity and the liquid reagent storage unit, the quantitative feeding mechanism works, the liquid spraying mechanism sprays out a proper amount of liquid to wet the surfaces of the plastic fragments, the powder spraying mechanism sprays out a proper amount of powder ingredients, and the plastic particles are fed into the powder storage cavity and the liquid reagent storage unit. Therefore, the powder reagent can be fully attached to the surfaces of the plastic fragments, and the problem of uneven mixing caused by layering of ingredients and the plastic fragments during existing plastic particle processing can be solved.

Description

Technical Field

[0001] The present invention relates to the field of plastic particles, and specifically to a plastic particle feeding device. Background Art

[0002] In the production process of plastic particles, production raw materials and production ingredients need to be mixed in a certain proportion, such as antioxidants, nucleating agents, fillers, and flame retardants. Especially when recycled plastics are used for regeneration, reagents such as coupling agents that improve the properties of plastics need to be added. In particular, when it is necessary to enhance a certain property of plastics, such as ultraviolet resistance, ultraviolet absorbers and hindered amine light stabilizers need to be added.

[0003] CN110480869B, a drying device for recycled plastic particles, includes a casing, a feed hopper and a feed pipe; a driving device for rotating the feed pipe is provided at the top of the casing, and there is a gap between the bottom of the inner side of the feed hopper and the top of the inner side of the feed pipe; there are two blowers on the top wall of the casing, an air outlet hood is provided below the top wall of the casing, and a sieve device that can swing left and right is provided in the upper middle part of the casing. An inclined partition plate with a left low and right high is provided below the sieve device in the casing, and a water outlet pipe extends to the outside of the casing on the left side of the inclined partition plate; the blanking port communicates with the heating chamber. This drying device for recycled plastic particles adopts a unique feeding structure, and relative rotation is formed at the connection between the bottom of the feed hopper and the feed pipe, so that the wet plastic particles can change their positions when passing through, and it is not easy to fixedly accumulate in place like the prior art, forming a blockage, making the feeding smoother. However, this drying process only dries the plastic fragments, and the ingredients used in combination will still cause an increase in the water content during the production of plastic particles.

[0004] CN119159747B, a plastic particle feeding device, includes a storage hopper, and a feed pipe for plastic particles to enter and a discharge pipe for plastic particles to be discharged are provided on the storage hopper. A first control valve is provided on the feed pipe, and a second control valve is provided on the discharge pipe; a vacuum machine, a horizontally placed pressure tank and a support assembly for supporting the pressure tank are provided on the side of the storage hopper. An air extraction pipe connected to the storage hopper and a vacuum pipe connected to the vacuum machine are provided on the pressure tank. A first regulating valve is provided at the end of the air extraction pipe, and a second regulating valve is provided on the vacuum pipe; when the pressure tank is applied to the feeding of plastic particles, the negative pressure environment inside itself can be maintained for a long time; therefore, it is not necessary to frequently start the vacuum machine, and only by opening the first regulating valve on the pressure tank alone, the feeding requirement of the storage hopper can be met, reducing the opening and closing frequency of the vacuum machine. Since plastic particles need to be mixed with some ingredients during processing, the feeding device provided by this technical solution uses a negative pressure adsorption method for feeding. The powdery ingredients and plastic fragments to be mixed have different masses, so the plastic fragments and ingredients will be unevenly mixed, affecting subsequent production. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides a plastic particle feeding device, which solves the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a plastic particle feeding device, including a hopper arranged at the feed outlet of an extruder, a quantitative feeding mechanism for rotating and quantitatively feeding plastic raw materials is arranged inside the hopper, a vibration mechanism for vibrating up and down to prevent blocking is arranged inside the hopper, the quantitative feeding mechanism moves up and down by rotating and extruding the vibration mechanism, an ingredient feeding mechanism is arranged inside the hopper below the quantitative feeding mechanism, the ingredient feeding mechanism includes a liquid spraying mechanism for mixing at least one ingredient into a liquid, and a powder spraying mechanism for respectively feeding other ingredients as solids, and the liquid spraying mechanism is located above the powder spraying mechanism and works before the powder spraying mechanism.

[0007] Preferably, the quantitative delivery mechanism includes a baffle plate arranged at the lower part of the hopper, a discharge hole is arranged in the middle of the baffle plate, a rotating disk is rotatably connected to the upper part of the baffle plate, a plurality of through holes distributed in an annular manner for receiving materials are opened on the surface of the rotating disk, the through holes coincide with the discharge holes through rotation, and a stepped continuous raised ring is fixedly installed above the surface of the rotating disk.

[0008] Preferably, the quantitative delivery mechanism comprises a rotating column whose axis is perpendicular to the axis of the hopper, a plurality of annularly distributed bearing grooves are provided on the surface of the rotating column, and a grooved extrusion belt is fixedly installed on the middle outer ring of the bearing groove.

[0009] Preferably, the vibration mechanism includes a sliding ring arranged inside the hopper, and a plurality of vibration rods pointing to the hopper are arranged inside the sliding ring. The centers of the vibration rods are fixedly connected through a central axis, and a resistance portion elastically squeezed by the quantitative feeding mechanism is arranged below the central axis.

[0010] Preferably, the liquid spraying mechanism includes a plurality of annularly distributed nozzles arranged inside the hopper, the liquid inlet pipes of the nozzles extend to the outside of the hopper, the liquid inlet pipes of the nozzles are connected and penetrated by a connecting ring, one end of the connecting ring is connected and penetrated with an electromagnetic piston part, the inlet end of the electromagnetic piston part is connected and penetrated with a liquid reagent storage unit, and the inlet end and the outlet end of the electromagnetic piston part are both connected and penetrated with a one-way guide valve.

[0011] Preferably, the powder spraying mechanism includes a plurality of powder storage chambers for storing different types of reagents, the top of the powder storage chamber is connected to and penetrated by a transfer unit that can adjust the dosage, the bottom of the transfer unit is connected to and penetrated by a temporary storage chamber, one end of the temporary storage chamber is connected to and penetrated by a hopper, and the other end of the temporary storage chamber is connected to and penetrated by a blast pipe.

[0012] Preferably, the transfer unit includes a housing. The upper end of the housing is connected to and communicates with the powder storage chamber, and the lower part of the housing is connected to and communicates with the temporary storage chamber. A grooved rotating body is rotatably connected inside the housing. A covering part is slidably connected inside the groove of the grooved rotating body. A extending rod is fixedly installed in the middle of the covering part. The extending rod extends to the outside of the grooved rotating body. Multiple extending rods are fixedly connected through a connecting ring. A threaded shaft is rotatably connected in the middle of the connecting ring. The threaded shaft is threadedly connected to the grooved rotating body.

[0013] Preferably, the part where the hopper is connected to the extruder is provided with a chute heating pipe with an obtuse central angle of the pipe. A heat insulation pad is provided at the connection between the chute heating pipe and the extruder.

[0014] Preferably, a screw blade is rotatably connected inside the inclined part of the chute heating pipe with respect to the center line of the hopper. One end of the screw blade extends to the feeding place of the extruder, and the other end extends to the outlet of the hopper.

[0015] Preferably, a fixed ring is fixedly installed inside the hopper. The fixed ring is located above the sliding ring. A pressing sensor is fixedly installed in the middle of the bottom end of the fixed ring. The pressing sensor is located directly above the central axis. The pressing sensor controls the operation of the batching and feeding mechanism.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. For this plastic particle feeding device, plastic fragments are put into the hopper, and corresponding batching reagents are placed inside the powder storage chamber and the liquid reagent storage unit. Through the operation of the quantitative feeding mechanism, a certain volume of plastic fragments is discharged. First, an appropriate amount of liquid is sprayed through the liquid spraying mechanism to make the surface of the plastic fragments wet, and then an appropriate amount of powder batching is sprayed through the powder spraying mechanism, so that the powder reagent can be fully attached to the surface of the plastic fragments, thereby solving the problem of layering between the batching and plastic fragments during the processing of existing plastic particles, resulting in uneven mixing.

[0017] 2. For this plastic particle feeding device, the part where the hopper is connected to the extruder is provided with a chute heating pipe with an obtuse central angle of the pipe. A heating wire is arranged inside the chute heating pipe. A heat insulation pad is provided at the connection between the chute heating pipe and the extruder. Since the water content has a great influence on the molding of plastic particles, preliminary drying is carried out by setting the chute heating pipe, and the obtuse shape can ensure that the plastic particles can flow slowly.

[0018] 3. The plastic particle feeding device, the transfer unit includes a housing. The upper end of the housing is connected and communicated with the powder storage chamber, and the lower part of the housing is connected and communicated with the temporary storage chamber. A grooved rotating body is rotatably connected inside the housing. A covering part is slidably connected inside the groove of the grooved rotating body. A extending rod is fixedly installed in the middle of the covering part, and the extending rod extends to the outside of the grooved rotating body. A plurality of extending rods are fixedly connected by a connecting ring. A threaded shaft is rotatably connected in the middle of the connecting ring, and the threaded shaft is threadedly connected with the grooved rotating body. By rotating the threaded shaft, the extending rod can be driven to move, so that the groove length of the covering part blocking the grooved rotating body can be changed, and thus the single feeding volume can be changed.

[0019] 4. In the plastic particle feeding device, a fixed ring is fixedly installed inside the hopper. The fixed ring is located above the sliding ring. A pressing sensor is fixedly installed in the middle of the bottom end of the fixed ring. The pressing sensor is located directly above the central axis. The pressing sensor controls the operation of the batching feeding mechanism. Through such a setting, after the pressing sensor is pressed, the batching feeding mechanism can work according to the response sequence, avoiding the time difference that is easily formed between the fixed response cycle and the feeding, so that the main material and the batching can be fed at intervals. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of the present invention; Figure 2 It is a schematic connection diagram of the rotating column of the present invention; Figure 3 It is a schematic half-sectional view of the hopper of the present invention; Figure 4 It is a schematic connection diagram of the rotating disk of the present invention; Figure 5 It is a schematic connection diagram of the vibration mechanism of the present invention; Figure 6 It is a schematic diagram of the batching feeding mechanism of the present invention; Figure 7 It is a schematic diagram of the liquid spraying mechanism of the present invention; Figure 8 It is a schematic diagram of the powder spraying mechanism of the present invention; Figure 9 It is a schematic connection diagram of the grooved rotating body of the present invention.

[0021] In the figure: 1, hopper; 2, quantitative feeding mechanism; 3, vibration mechanism; 4, batching feeding mechanism; 41, liquid spraying mechanism; 42, powder spraying mechanism; 201, baffle; 202, discharge hole; 203, rotating disk; 204, through hole; 205, continuous convex ring; 206, rotating column; 207, bearing groove; 208, grooved extrusion belt; 301, sliding ring; 302, vibration rod; 303, central axis; 304, abutting part; 411, nozzle; 412, electromagnetic piston part; 413, liquid reagent storage unit; 414, one-way conduction valve; 421, powder storage cavity; 423, transfer unit; 424, temporary storage cavity; 425, air blowing pipe; 426, outer shell; 427, grooved rotating body; 428, covering part; 429, extension rod; 430, connecting ring; 431, threaded shaft; 101, chute heating pipeline; 102, heat insulation pad; 103, auger blade; 5, fixing ring; 6, pressing sensor. Detailed implementation manner

[0022] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application.

[0023] It should be noted that all the directional indications in the embodiments of the present application are only used to explain the relative position relationship and movement conditions between components in a specific posture. If this specific posture changes, the directional indication will also change accordingly.

[0024] In the present application, unless otherwise clearly defined and limited, the terms "connection", "fixation", etc. shall be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0025] In addition, in this application, descriptions such as "first" and "second" are for descriptive purposes only, and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0026] As Figures 1-9 shown, a plastic particle feeding device includes a hopper 1 provided at the feeding outlet of an extruder. Inside the hopper 1, there is a quantitative feeding mechanism 2 for rotating and quantitatively feeding plastic raw materials. Inside the hopper 1, there is a vibration mechanism 3 for preventing blockage by vibrating up and down. The quantitative feeding mechanism 2 moves up and down through the rotating extrusion vibration mechanism 3. Inside the hopper 1, below the quantitative feeding mechanism 2, there is a batching feeding mechanism 4. The batching feeding mechanism 4 includes a liquid spraying mechanism 41 for mixing at least one batching into a liquid for spraying. The liquid spraying mechanism 41 restricts the amount of the sprayed liquid to be less than the requirement of the highest water content of the fed plastic. Of course, in the process of PP plastic production, liquid additives also need to be added. Since the total amount of the added liquid additives is small, deionized water can be used for dilution to achieve the effect of moistening plastic fragments.

[0027] And a powder spraying mechanism 42 for separately feeding other batchings as solids. The liquid spraying mechanism 41 is located above the powder spraying mechanism 42 and operates prior to the powder spraying mechanism 42. Given the volume of a single feed of the quantitative feeding mechanism 2, the single feed amount of the batching feeding mechanism 4 is determined by proportional conversion. During the falling process of the plastic fragments fed by the quantitative feeding mechanism 2, the liquid spraying mechanism 41 sprays a liquid feeding reagent to moisten the plastic fragments. Continuing to fall, the powder spraying mechanism 42 can spray powdery additives, enabling the powdery additives to fully adhere to the surface of the plastic fragments.

[0028] The quantitative feeding mechanism 2 includes a baffle 201 arranged below the interior of the hopper 1. A discharge hole 202 is provided in the middle of the baffle 201. A rotating disk 203 is rotatably connected above the baffle 201. A plurality of through holes 204 for receiving materials are formed on the surface of the rotating disk 203 in an annular distribution. The through holes 204 coincide with the discharge hole 202 through rotation. A stepped continuous convex ring 205 is fixedly installed above the surface of the rotating disk 203. By rotating the rotating disk 203, the through holes 204 can be filled with plastic fragments. When the through holes 204 rotate to coincide with the discharge hole 202, the plastic fragments fall. Since the discharge hole 202 is located on one side of the hopper 1, part of the power mechanism for driving the rotation of the rotating disk 203 can be installed below the hopper 1, making the installation more convenient.

[0029] The quantitative feeding mechanism 2 includes a rotating column 206 whose axis is perpendicular to the axis of the hopper 1. A plurality of annularly distributed bearing grooves 207 are formed on the surface of the rotating column 206. A groove-type extrusion belt 208 is fixedly installed on the outer ring of the middle of the bearing grooves 207. By rotating the rotating column 206, the positions of the bearing grooves 207 are changed, and a quantitative amount of plastic fragments can be fed by using the bearing grooves 207. Through such a setting, when the plastic fragments are fed in the bearing grooves 207, they can fall by themselves under the action of gravity, thereby avoiding the plastic fragments being stuck in the bearing grooves 207.

[0030] The vibration mechanism 3 includes a sliding ring 301 arranged inside the hopper 1. A plurality of vibration rods 302 pointing to the hopper 1 are arranged inside the sliding ring 301. The centers of the vibration rods 302 are fixedly connected through a central shaft 303. The central shaft 303 is connected with a return spring. The installation position of the return spring can be in contact with the quantitative feeding mechanism 2 or can be arranged between the central shaft 303 and the hopper 1. Through the return spring, the vibration mechanism 3 can be reset under the action of the return spring after being extruded upward. A contact part 304 elastically extruded with the quantitative feeding mechanism 2 is arranged below the central shaft 303. The contact part 304 changes according to the shape of the part in the quantitative feeding mechanism 2 that is extruded with it, ensuring that the contact part 304 can be extruded to move up and down during the rotation process. Through the up and down movement of the vibration mechanism 3, the plastic fragments can be prevented from being stuck in the hopper 1.

[0031] The liquid ejection mechanism 41 includes a plurality of annularly distributed nozzles 411 arranged inside the hopper 1. Through the nozzles 411, the liquid can be evenly sprayed onto the surface of the plastic fragments. The liquid inlet pipe of the nozzle 411 extends to the outside of the hopper 1. The liquid inlet pipes of the nozzles 411 are connected and penetrated through a connecting ring 430. One end of the connecting ring 430 is connected and penetrated with an electromagnetic piston part 412. The electromagnetic piston part 412 realizes the extraction and discharge of the liquid through the expansion and contraction of the internal piston unit. By controlling the single movement range of the piston part, the amount of water sprayed each time can be restricted. The inlet end of the electromagnetic piston part 412 is connected and penetrated with a liquid reagent storage unit 413. The inlet end and the outlet end of the electromagnetic piston part 412 are both connected and penetrated with a one-way conduction valve 414. By setting the one-way conduction valve 414, the liquid can be prevented from flowing back.

[0032] The powder ejection mechanism 42 includes a plurality of powder storage chambers 421 for storing different types of reagents. The top end of the powder storage chamber 421 is connected and penetrated with a transfer unit 423 that can adjust the feeding amount. Below the transfer unit 423 is connected and penetrated with a temporary storage chamber 424. One end of the temporary storage chamber 424 is connected and penetrated with the hopper 1. The other end of the temporary storage chamber 424 is connected and penetrated with a blast pipe 425. Through the transfer unit 423, a fixed amount of powder is transferred into the temporary storage chamber 424. Through the blast pipe 425 exhausting air outwards, the fixed amount of powder is blown towards the plastic fragments. At the same time, a one-way exhaust valve can be arranged on one side of the hopper 1 for exhausting air.

[0033] The transfer unit 423 includes a housing 426. The upper end of the housing 426 is connected and penetrated with the powder storage chamber 421. The lower part of the housing 426 is connected and penetrated with the temporary storage chamber 424. Inside the housing 426 is rotatably connected with a grooved rotating body 427. The adjusting end of the grooved rotating body 427 extends to the outside of the housing 426. The other side of the grooved rotating body 427 is connected with a power source that drives the grooved rotating body 427 to rotate. Half of the groove of the grooved rotating body 427 communicates with the hopper 1. Inside the groove of the grooved rotating body 427 is slidably connected with a covering part 428. In the middle of the covering part 428 is fixedly installed an extension rod 429. The extension rod 429 extends to the outside of the grooved rotating body 427. A plurality of extension rods 429 are fixedly connected through a connecting ring 430. In the middle of the connecting ring 430 is rotatably connected with a threaded shaft 431. The threaded shaft 431 is threadedly connected with the grooved rotating body 427. By rotating the threaded shaft 431, the extension rod 429 can be driven to move, so that the length of the groove of the grooved rotating body 427 blocked by the covering part 428 can be changed, and thus the single feeding volume can be changed.

[0034] A chute heating pipe 101 with an obtuse angle between the pipe center and the connection part of the hopper 1 and the extruder is provided. Heating wires are arranged inside the chute heating pipe 101. A heat insulation pad 102 is provided at the connection between the chute heating pipe 101 and the extruder. Since the water content has a great influence on the molding of plastic particles, preliminary drying is carried out by setting the chute heating pipe 101, and setting the obtuse angle shape can ensure the slow flow of plastic particles.

[0035] A screw blade 103 is rotatably connected inside the inclined part of the chute heating pipe 101 and the center line of the hopper 1. One end of the screw blade 103 extends to the feeding place of the extruder, and the other end extends to the outlet of the hopper 1. By setting the screw blade 103, it can drive the plastic fragments to be stirred and moved.

[0036] A fixed ring 5 is fixedly installed inside the hopper 1. The fixed ring 5 is located above the sliding ring 301. A pressing sensor 6 is fixedly installed in the middle of the bottom end of the fixed ring 5. The pressing sensor 6 is located directly above the central shaft 303. The pressing sensor 6 controls the operation of the batching feeding mechanism 4. Through such a setting, after the pressing sensor 6 is pressed, the batching feeding mechanism 4 can work according to the response sequence, avoiding the time difference that is easily formed between the fixed response cycle and the feeding, so that the main material and the batching can be fed at intervals.

[0037] During use, plastic fragments are put into the hopper 1, and the corresponding batching reagents are placed inside the powder storage cavity 421 and the liquid reagent storage unit 413. Through the operation of the quantitative feeding mechanism 2, a certain volume of plastic fragments is discharged. First, the liquid spraying mechanism 41 sprays an appropriate amount of liquid to make the surface of the plastic fragments wet, and then the powder spraying mechanism 42 sprays an appropriate amount of powder batching, so that the powder reagent can fully adhere to the surface of the plastic fragments, thus solving the problem of layering between the batching and the plastic fragments during the processing of existing plastic particles, resulting in uneven mixing.

[0038] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0039] In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0040] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A plastic particle feeding device, comprising a hopper (1) arranged at the feeding outlet of an extruder, characterized in that: The hopper (1) is provided with a quantitative feeding mechanism (2) for rotating and quantitatively feeding plastic raw materials, and the hopper (1) is provided with a vibration mechanism (3) for vibrating up and down to prevent blocking, and the quantitative feeding mechanism (2) moves up and down by rotating and squeezing the vibration mechanism (3); An ingredient delivery mechanism (4) is arranged inside the hopper (1) below the quantitative delivery mechanism (2). The ingredient delivery mechanism (4) comprises a liquid ejection mechanism (41) for mixing at least one ingredient into a liquid and delivering it, and a powder ejection mechanism (42) for delivering other ingredients separately as solids. The liquid ejection mechanism (41) is located above the powder ejection mechanism (42) and operates before the powder ejection mechanism (42).

2. The plastic particle feeding device according to claim 1, characterized in that: The quantitative dispensing mechanism (2) comprises a baffle (201) arranged at the lower part of the hopper (1); a discharge hole (202) is arranged in the middle of the baffle (201); a rotating disk (203) is rotatably connected to the upper part of the baffle (201); a plurality of through holes (204) for receiving materials are arranged in an annular pattern on the surface of the rotating disk (203); the through holes (204) overlap with the discharge hole (202) through rotation; and a stepped continuous raised ring (205) is fixedly mounted above the surface of the rotating disk (203).

3. A plastic particle feeding device according to claim 1, characterized in that: The quantitative delivery mechanism (2) comprises a rotating column (206) whose axis is perpendicular to the axis of the hopper (1); a plurality of annularly distributed bearing grooves (207) are provided on the surface of the rotating column (206); a grooved extrusion belt (208) is fixedly mounted on the middle outer ring of the bearing groove (207).

4. A plastic particle feeding device according to claim 2 or 3, characterized in that: The vibration mechanism (3) comprises a sliding ring (301) arranged inside the hopper (1); a plurality of vibration rods (302) pointing towards the hopper (1) are arranged inside the sliding ring (301); the centers of the vibration rods (302) are fixedly connected via a central axis (303); and a resistance portion (304) elastically pressed against the quantitative dispensing mechanism (2) is arranged below the central axis (303).

5. A plastic particle feeding device according to claim 4, characterized in that: The liquid ejection mechanism (41) comprises a plurality of annularly distributed nozzles (411) arranged inside the hopper (1); a liquid inlet pipe of the nozzle (411) extends to the outside of the hopper (1); the liquid inlet pipe of the nozzle (411) is connected and penetrated by a connecting ring (430); one end of the connecting ring (430) is connected and penetrated by an electromagnetic piston part (412); an inlet end of the electromagnetic piston part (412) is connected and penetrated by a liquid reagent storage unit (413); and both the inlet end and the outlet end of the electromagnetic piston part (412) are connected and penetrated by a one-way guide valve (414).

6. A plastic particle feeding device according to claim 4, characterized in that: The powder ejection mechanism (42) comprises a plurality of powder storage chambers (421) for storing different types of reagents. The top of the powder storage chamber (421) is connected to and penetrated by a transfer unit (423) capable of adjusting the amount of reagents to be ejected. The bottom of the transfer unit (423) is connected to and penetrated by a temporary storage chamber (424). One end of the temporary storage chamber (424) is connected to and penetrated by a hopper (1), and the other end of the temporary storage chamber (424) is connected to and penetrated by a blast pipe (425).

7. A plastic particle feeding device according to claim 6, characterized in that: The transfer unit (423) includes a housing (426). The upper end of the housing (426) is connected to and communicates with the powder storage chamber (421). The lower part of the housing (426) is connected to and communicates with the temporary storage chamber (424). A grooved rotating body (427) is rotatably connected inside the housing (426). A covering part (428) is slidably connected inside the groove of the grooved rotating body (427). An extension rod (429) is fixedly installed in the middle of the covering part (428). The extension rod (429) extends to the outside of the grooved rotating body (427). A plurality of extension rods (429) are fixedly connected through a connecting ring (430). A threaded shaft (431) is rotatably connected to the middle of the connecting ring (430). The threaded shaft (431) is threadedly connected to the grooved rotating body (427).

8. A plastic particle feeding device according to any one of claims 5-7, characterized in that: A chute heating pipe (101) with an obtuse central angle of the pipe is provided at the connection part between the hopper (1) and the extruder. A heat insulation pad (102) is provided at the connection between the chute heating pipe (101) and the extruder.

9. The plastic particle feeding device according to claim 8, characterized in that: A screw blade (103) is rotatably connected inside the inclined part of the chute heating pipe (101) with respect to the center line of the hopper (1). One end of the screw blade (103) extends to the feeding part of the extruder, and the other end extends to the outlet of the hopper (1).

10. A plastic particle feeding device according to claim 9, characterized in that: A fixing ring (5) is fixedly installed inside the hopper (1). The fixing ring (5) is located above the sliding ring (301). A pressing sensor (6) is fixedly installed in the middle of the bottom end of the fixing ring (5). The pressing sensor (6) is located directly above the central axis (303). The pressing sensor (6) controls the operation of the batching and feeding mechanism (4).

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