Granulating device for plastic recovery

Abstract

The utility model discloses a granulating device for plastic recovery, which relates to the technical field of plastic recovery and comprises a plastic extruding machine, a water tank and a motor I fixedly mounted below a plastic extruding head of the plastic extruding machine, a cutter is fixedly mounted on an output shaft of the motor I, the cutter is in contact with the plastic extruding head of the plastic extruding machine, the water tank is positioned below the motor I, and the water tank is positioned below the motor II. A partition plate is fixedly mounted in the water tank and divides the water tank into a water storage cavity and a material storage cavity; the water storage cavity is located below the motor I. An obliquely-arranged annular filter screen is rotationally installed in the water storage cavity. According to the granulation device for plastic recovery, through the synergistic effect of water flow and the annular filter screen, plastic particles with the density larger than or smaller than that of water can be effectively separated and transported, the cutter makes contact with the water to form an isolation layer, the possibility that the plastic particles adhere to the cutter is reduced, meanwhile, the design of the water flow avoids accumulation of the plastic particles, and the production efficiency is improved. And the problem of adhesion is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of plastic recycling, in particular to a granulating device for plastic recycling. BACKGROUND

[0002] In the Chinese utility model patent application No. CN202323274584.5, a plastic particle granulating device is disclosed, which comprises an extruder body, a cooling water tank, a cutting and transferring mechanism and a screening mechanism. A discharge end is provided on one side wall of the extruder body. The cooling water tank is fixed on the side of the extruder body with the discharge end. An inlet pipe and an outlet pipe are provided on the side wall of the cooling water tank, and the inlet pipe and the outlet pipe are connected with a cold water circulating machine. The plastic particle granulating device cuts the molten plastic strip extruded by the extruder using a cutter. The cut plastic particles fall into the water pool for cooling. However, when the density of the plastic particles is less than water, the rapidly falling plastic particles will accumulate in large quantities, causing the plastic particles to stick together. In addition, when the cutter continuously cuts the molten plastic strip, the temperature of the cutter will rise, which will easily cause the plastic particles to stick to the cutter.

[0003] Therefore, it is necessary to provide a granulating device for plastic recycling to solve the above problems. UTILITY MODEL CONTENTS

[0004] The technical problem to be solved is to provide a granulating device for plastic recycling to solve the problem of the existing plastic particle granulating device, which cuts the molten plastic strip extruded by the extruder using a cutter. The cut plastic particles fall into the water pool for cooling. However, when the density of the plastic particles is less than water, the rapidly falling plastic particles will accumulate in large quantities, causing the plastic particles to stick together. In addition, when the cutter continuously cuts the molten plastic strip, the temperature of the cutter will rise, which will easily cause the plastic particles to stick to the cutter.

[0005] Technical solution: To achieve the above object, the utility model discloses a granulating device for plastic recycling, which comprises an extruding machine, a water pool and a motor I fixedly installed below the extruding head of the extruding machine, a cutter fixedly installed on the output shaft of the motor I, the cutter being in contact with the extruding head of the extruding machine, the water pool being located below the motor I and having a partition plate fixedly installed inside, the partition plate dividing the water pool into a water storage cavity and a material storage cavity, the water storage cavity being located below the motor I and having an annular filter screen rotatably installed inside, the water pool being provided with a driving assembly for driving the annular filter screen to rotate, a plurality of grooves being uniformly formed on the outer ring surface of the annular filter screen, and the upper end of the annular filter screen extending above the material storage cavity, a guide plate fixedly installed on the inner side of the water storage cavity away from the partition plate and downwardly inclined, the lower end of the guide plate being in contact with the annular filter screen, a water pump fixedly installed at the bottom of the water pool, the input end of the water pump being communicated with one end of the water storage cavity close to the partition plate, a plurality of spray heads fixedly installed on the upper part of the side wall of the water storage cavity away from the partition plate, the plurality of spray heads being arranged at intervals along the width direction of the water storage cavity and being all located below the water surface, a connecting pipe II fixedly installed on the input end of the spray head, and the other end of the plurality of connecting pipes II being communicated with the output end of the water pump.

[0006] Preferably, a scraper is horizontally fixedly installed in the water storage cavity, the scraper being located below the spray head and being in contact with the side of the cutter away from the extruding machine.

[0007] Preferably, the driving assembly comprises fixed plates symmetrically fixedly installed on the top of the material storage cavity, a rotating shaft I rotatably installed at the bottom of the water storage cavity away from the partition plate, a rotating shaft II rotatably installed between the two fixed plates, and a motor II fixedly installed on one of the fixed plates, the rotating shaft II being in transmission connection with the motor II, and the two ends of the annular filter screen being sleeved on the rotating shaft I and the rotating shaft II respectively.

[0008] Preferably, the input end of the water pump is fixedly installed with a connecting pipe I, the other end of the connecting pipe I being communicated with the water storage cavity, the output end of the water pump is fixedly installed with a water distribution joint, and one end of the plurality of connecting pipes II is communicated with the water distribution joint.

[0009] Preferably, a brush is fixedly installed between the two fixed plates, and the bristles of the brush are in contact with the bottom surface of the annular filter screen.

[0010] Beneficial effects: compared with the prior art, the granulating device for plastic recycling has a unique structure and is convenient to use, the plastic raw material is heated to a molten state by the plastic extruding machine, and is extruded into a strip shape through the plastic extruding head, the motor I drives the cutter to rotate, the molten plastic strip is cut into granular shape, the cutter contacts water during the cutting process, a physical isolation layer is formed, the possibility of adhesion of the plastic particles on the cutter is reduced, the temperature of the cutter is reduced, and the adhesion caused by high temperature is avoided; the water pump pumps out the water in the water storage cavity and sprays it out through the spray head to form a water flow, which can not only help the plastic particles to move but also can cool the cooling water; when the density of the plastic particles is less than that of water, the particles move to the partition plate under the action of the water flow after entering the water surface, and the adhesion and accumulation are avoided; when the density of the plastic particles is greater than that of water, the particles sink underwater and are moved to the annular filter screen through the guide plate, the motor II drives the annular filter screen to rotate, the plastic particles are transported from the water storage cavity to the storage cavity through the groove on the annular filter screen, and efficient separation and transportation are realized.

[0011] The device can effectively separate and transport the plastic particles with density greater than or less than water through the synergistic effect of the water flow and the annular filter screen, the cutter contacts water to form an isolation layer, the possibility of adhesion of the plastic particles on the cutter is reduced, and the problem of adhesion caused by the accumulation of the plastic particles is avoided by the design of the water flow. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a three-dimensional schematic view of the structure of the utility model;

[0013] Figure 2 It is a front view schematic view of the structure of the utility model;

[0014] Figure 3 It is a sectional view schematic view of the pool structure of the utility model.

[0015] In the drawing: 1, plastic extruding machine; 2, pool; 3, motor I; 4, cutter; 5, partition plate; 6, scraper; 7, annular filter screen; 8, guide plate; 9, water pump; 10, connecting pipe I; 11, water distribution joint; 12, connecting pipe II; 13, spray head; 14, fixed plate; 15, rotating shaft I; 16, rotating shaft II; 17, motor II; 18, brush. DETAILED DESCRIPTION

[0016] The utility model is further described below in combination with the drawings and examples.

[0017] Example 1: the example 1 provides a kind of granulating device for plastic recycling, directly improves on existing plastic particle granulating device, unique structure, please refer to Figures 1-3As shown, the device comprises an extruder 1, a water tank 2 and a motor I 3 fixedly installed below the extruding head of the extruder 1, a cutter 4 fixedly installed on the output shaft of the motor I 3, the cutter 4 being in contact with the extruding head of the extruder 1, the water tank 2 being below the motor I 3, and a partition plate 5 fixedly installed inside the water tank 2, the partition plate 5 dividing the water tank 2 into a water storage cavity and a material storage cavity.

[0018] The water storage cavity is below the motor I 3, and an annular filter screen 7 is rotatably installed in the water storage cavity, the annular filter screen 7 being obliquely arranged, the edge of the annular filter screen 7 being in contact with the inner wall of the water storage cavity, the water tank 2 being provided with a driving assembly for driving the annular filter screen 7 to rotate, a plurality of grooves being uniformly formed on the outer ring surface of the annular filter screen 7, and the upper end of the annular filter screen 7 extending above the material storage cavity; the driving assembly comprises fixed plates 14 fixedly installed on the top of the material storage cavity, a rotating shaft I 15 rotatably installed on the bottom of the water storage cavity away from the partition plate 5, a rotating shaft II 16 rotatably installed between the two fixed plates 14, and a motor II 17 fixedly installed on one of the fixed plates 14, the rotating shaft II 16 being in transmission connection with the motor II 17, and the two ends of the annular filter screen 7 being sleeved on the rotating shaft I 15 and the rotating shaft II 16 respectively.

[0019] The rotating shaft I 15 and the rotating shaft II 16 can be installed in various ways, for example, bearings are sleeved on the two ends of the rotating shaft I 15 and the rotating shaft II 16, the rotating shaft I 15 is rotatably connected with the water tank 2 through the bearings, the rotating shaft II 16 is rotatably connected with the fixed plate 14 through the bearings, and one end of the rotating shaft II 16 is fixedly connected with the output shaft of the motor II 17 through a shaft coupling; a material guide plate 8 is fixedly installed on the inner side of the water storage cavity away from the partition plate 5, the lower end of the material guide plate 8 being in contact with the annular filter screen 7, a water pump 9 is fixedly installed on the bottom of the water tank 2, the input end of the water pump 9 being in communication with one end of the water storage cavity close to the partition plate 5, a plurality of spray heads 13 are fixedly installed on the upper part of the side wall of the water storage cavity away from the partition plate 5, the plurality of spray heads 13 being arranged at intervals along the width direction of the water storage cavity, and the plurality of spray heads 13 all being below the water surface, a connecting pipe II 12 being fixedly installed on the input end of the spray head 13, and the other ends of the plurality of connecting pipes II 12 all being in communication with the output end of the water pump 9.

[0020] Through the arrangement of the water pump 9, the connecting pipe II 12 and the spray head 13, the water pump 9 pumps out the water on the side of the water storage cavity close to the partition plate 5, and then sprays the water out from the side of the water storage cavity away from the partition plate 5 through the spray head 13, so that the water at the upper part of the water storage cavity moves towards the partition plate 5, and the water at the lower part of the water storage cavity moves towards the extruder 1, when the density of the cut plastic particles is less than that of water, the plastic particles will move towards the partition plate 5 under the action of the water flow after entering the water surface, which not only can avoid the plastic particles from being accumulated together to cause mutual adhesion, but also can dissipate the heat of the cooling water.

[0021] The scraping plate 6 is horizontally fixedly installed in the water storage cavity, is located below the spray head 13, and is in contact with the side of the cutter 4 away from the extruder 1, the cutter 4 is located between the spray head 13 and the scraping plate 6, so that the cutter 4 is prevented from colliding with the spray head 13 when the cutter 4 moves below the motor I 3, and the cutter 4 is immersed in water when the cutter 4 moves below the motor I 3, so that the plastic particles adhered to the cutter 4 can be washed away, and the temperature of the cutter 4 can be reduced, so that the plastic particles are less likely to adhere to the cutter 4, in addition, when the cutter 4 is used to cut the molten plastic after being wetted by water, a physical isolation layer is formed between the cutter 4 and the plastic, so that the adhesion is reduced, and when the cutter 4 is in contact with the scraping plate 6, the scraping plate 6 can further scrape off the plastic particles adhered to the cutter 4; the input end of the water pump 9 is fixedly installed with a connecting pipe I 10, the other end of the connecting pipe I 10 is communicated with the water storage cavity, the output end of the water pump 9 is fixedly installed with a water distribution joint 11, and one end of a plurality of connecting pipes II 12 is communicated with the water distribution joint 11.

[0022] Working principle: when the device is used, it is first connected with an external power supply, and then the extruder 1, the motor I 3, the water pump 9 and the motor II 17 are started, the molten plastic is extruded from the extrusion head of the extruder 1, at this time, the motor I 3 drives the cutter 4 to rotate, so that the molten plastic is cut into particles, the plastic particles fall into the water storage cavity, when the density of the plastic particles is less than the density of water, the plastic particles move to the annular filter screen 7 under the action of water flow after entering the water surface, so that the plastic particles are prevented from being accumulated together, at this time, the motor II 17 drives the annular filter screen 7 to rotate, and the annular filter screen 7 transports the plastic particles to the storage cavity through the grooves on the annular filter screen 7; when the density of the plastic particles is greater than the density of water, the plastic particles sink underwater and move to the annular filter screen 7 through the guide plate 8, and then move to the storage cavity through the annular filter screen 7.

[0023] Embodiment 2: the difference between embodiment 2 and embodiment 1 lies in that, as shown in Figure 1 , 3 two fixed plates 14 are fixedly installed with a brush 18, and the bristles of the brush 18 are in contact with the bottom surface of the annular filter screen 7, the brush 18 is arranged, so that the plastic particles in the grooves of the annular filter screen 7 are cleaned out, and the plastic particles are prevented from returning to the water storage cavity along with the annular filter screen 7.

[0024] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A pelletizing device for plastic recycling, comprising an extruder (1), characterized in that: It also includes a pool (2) and fixedly installed below the extrusion head of the extruder (1) motor I (3), the output shaft of the motor I (3) is fixedly installed with a cutter (4), the cutter (4) is in contact with the extrusion head of the extruder (1), the pool (2) is below the motor I (3), and the inside of the pool (2) is fixedly installed with a partition (5), the partition (5) separates the pool (2) into a water storage cavity and a storage cavity; the water storage cavity is below the motor I (3), and the water storage cavity is rotatably installed with an inclined annular filter screen (7), the pool (2) is provided with a driving assembly for driving the annular filter screen (7) to rotate, a plurality of grooves are uniformly formed in the outer ring surface of the annular filter screen (7), and the upper end of the annular filter screen (7) extends above the storage cavity; the inner side of the water storage cavity away from the partition (5) is fixedly installed with a downwardly inclined guide plate (8), the lower end of the guide plate (8) is in contact with the annular filter screen (7), the bottom of the pool (2) is fixedly installed with a water pump (9), the input end of the water pump (9) is communicated with one end of the water storage cavity close to the partition (5), a plurality of nozzles (13) are fixedly installed on the upper part of the side wall of the water storage cavity away from the partition (5), the plurality of nozzles (13) are arranged at intervals along the width direction of the water storage cavity, and the plurality of nozzles (13) are all below the water surface, the input end of the nozzle (13) is fixedly installed with a connecting pipe II (12), and the other end of the plurality of connecting pipes II (12) is communicated with the output end of the water pump (9).

2. The granulating device for plastic recycling according to claim 1, characterized in that: The water storage cavity is horizontally fixedly installed with a scraper (6), the scraper (6) is below the nozzle (13), and the scraper (6) is in contact with the side of the cutter (4) away from the extruder (1).

3. The granulating device for plastic recycling according to claim 1, characterized in that: The driving assembly comprises two fixed plates (14) symmetrically fixedly installed on the top of the storage cavity, a rotating shaft I (15) rotatably installed on the bottom of the side of the water storage cavity away from the partition (5), a rotating shaft II (16) rotatably installed between the two fixed plates (14), and a motor II (17) fixedly installed on one of the fixed plates (14), the rotating shaft II (16) is in transmission connection with the motor II (17), and the two ends of the annular filter screen (7) are respectively sleeved on the rotating shaft I (15) and the rotating shaft II (16).

4. The granulating device for plastic recycling according to claim 1, characterized in that: The input end of the water pump (9) is fixedly installed with a connecting pipe I (10), the other end of the connecting pipe I (10) is communicated with the water storage cavity, the output end of the water pump (9) is fixedly installed with a water distribution connector (11), and one end of the plurality of connecting pipes II (12) is communicated with the water distribution connector (11).

5. The granulating device for plastic recycling according to claim 3, characterized in that: The two fixed plates (14) are fixedly installed with a brush (18), and the bristles of the brush (18) are in contact with the bottom surface of the annular filter screen (7).

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