Granulator for plastic particle production

Abstract

The utility model discloses a pelletizer for producing plastic particles, which comprises a workbench, a conveying cylinder is fixedly mounted on the workbench, a crushing box is arranged at the top end of the conveying cylinder, a plurality of heating pieces are fixedly sleeved on the outer side of the conveying cylinder, a discharge port of the conveying cylinder is connected with a forming box through an extrusion plate, and the extrusion plate is connected with a motor. A fan and a cutting blade are rotationally arranged in the forming box, and a trumpet-shaped material guiding opening is formed between the fan and the cutting blade. The fan is fixedly sleeved on the rotating shaft of the cutting blade, so that the fan and the cutting blade rotate synchronously, and meanwhile, the fan rotates to form negative pressure on one side, close to the extrusion plate, of the fan, so that plastic particles cut off by the cutting blade are blown into the trumpet-shaped material guide port by airflow, and the temperature of the surface layers of the plastic particles is reduced; and the viscosity of the plastic particles is greatly reduced, and the probability that the plastic particles adhere to the inner wall of the forming box is reduced, so that the number of times of cleaning the forming box is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic particles, in particular to a granulator for producing plastic particles. Background Art

[0002] At present, the production process of plastic granules is as follows: the plastic raw materials are heated and melted by a screw extruder, then flow out through a die, cooled, and finally cut and processed by a plastic granulator to obtain the required plastic particles. At present, the granulation and molding devices of the conventionally used plastic granulators mostly adopt a flat plate-type fixed hole single-knife rotary extrusion granulation. Due to the high temperature of the molten plastic, the cut molten plastic particles often stick to the molding box, which is easy to block the discharge port on the molding box, thereby affecting the granulation efficiency. Utility Model Content

[0003] The purpose of the utility model is to provide a granulator for producing plastic particles to solve the above-mentioned deficiencies in the prior art.

[0004] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a granulator for producing plastic particles, comprising a workbench, on which a conveying cylinder is fixedly installed, a crushing box is arranged at the top of the conveying cylinder, a plurality of heating elements are fixedly sleeved on the outer side of the conveying cylinder, a discharge port of the conveying cylinder is connected to a molding box through an extrusion plate, a fan and a cutting blade are rotatably arranged in the molding box, and a trumpet-shaped material guide port is arranged between the fan and the cutting blade.

[0005] Furthermore, the fan and the cutting blade are fixedly sleeved on the same rotating shaft, and a second motor is fixedly mounted on the forming box, and the second motor drives the fan and the cutting blade to rotate.

[0006] Furthermore, a support frame is fixedly connected to a side of the fan away from the extrusion plate, and the trumpet-shaped material guide port is fixedly connected to the support frame.

[0007] Furthermore, a vent is provided on the molding box, and a material baffle is arranged inside the molding box.

[0008] Furthermore, two crushing rollers are rotatably arranged in the crushing box.

[0009] Furthermore, an auger is rotatably arranged in the conveying cylinder, a first motor is fixedly mounted on one end of the conveying cylinder, and an output shaft of the first motor is fixedly connected to the auger.

[0010] Furthermore, a plurality of forming holes are provided in the extrusion plate, and the forming holes connect the conveying cylinder and the forming box.

[0011] In the above technical scheme, the granulator for producing plastic particles provided by the utility model has the beneficial effects of:

[0012] The utility model fixes a sleeve fan on the rotating shaft of the cutting blade so that the fan and the cutting blade rotate synchronously. At the same time, the rotation of the fan forms a negative pressure on the side of the fan close to the extrusion plate, so that the plastic particles cut off by the cutting blade are blown into the trumpet-shaped material guide port by the air flow, so that the surface temperature of the plastic particles decreases, the viscosity of the plastic particles is greatly reduced, and the probability of the plastic particles sticking to the inner wall of the molding box is reduced, thereby reducing the number of times the molding box is cleaned and improving work efficiency.

[0013] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

[0014] This application document provides an overview of various implementations or examples of the technology described in the present disclosure, and is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0016] Figure 1 A schematic diagram of the structure provided for an embodiment of the utility model;

[0017] Figure 2 A cross-sectional view provided for an embodiment of the utility model;

[0018] Figure 3 The embodiment of the utility model provides Figure 2 Enlarged view of point A.

[0019] Description of reference numerals:

[0020] 1. Workbench; 2. Conveying cylinder; 21. Auger; 3. First motor; 4. Crushing box; 41. Crushing roller; 5. Heating element; 6. Extrusion plate; 61. Forming hole; 7. Forming box; 71. Discharge port; 72. Ventilation port; 73. Baffle plate; 8. Fan; 9. Cutting blade; 91. Support frame; 92. Trumpet-shaped material guide port; 10. Second motor. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0022] Please refer to 1-3, a granulator for producing plastic particles, including a workbench 1, a conveying cylinder 2 is fixedly installed on the workbench 1, a crushing box 4 is arranged on the top of the conveying cylinder 2, a plurality of heating elements 5 are fixedly sleeved on the outer side of the conveying cylinder 2, the discharge port of the conveying cylinder 2 is connected to the molding box 7 through the extrusion plate 6, a fan 8 and a cutting blade 9 are rotatably arranged in the molding box 7, and a trumpet-shaped material guide port 92 is arranged between the fan 8 and the cutting blade 9.

[0023] Specifically, the trumpet-shaped material guide port 92 is disposed between the fan 8 and the cutting blade 9, dividing the space in the molding box 7 into two parts. Figure 3 When the fan 8 rotates, the airflow direction is from left to right. The rotation of the fan 8 forms a negative pressure on the left side of the trumpet-shaped guide port 92, and further causes the plastic particles cut off by the cutting blade 9 to be blown to the right side of the trumpet-shaped guide port 92 by the airflow. In this process, the surface temperature of the plastic particles decreases, and the viscosity of the plastic particles is greatly reduced, which reduces the probability of the plastic particles sticking to the inner wall of the molding box 7, thereby reducing the number of times the molding box 7 is cleaned and improving the work efficiency. At the same time, the plastic particles are guided to the right side of the trumpet-shaped guide port 92 for discharge, avoiding a secondary collision between the plastic particles and the cutting blade 9, and improving the quality of the plastic particles.

[0024] Furthermore, the fan 8 and the cutting blade 9 are fixedly sleeved on the same rotating shaft, and a second motor 10 is fixedly installed on the molding box 7. The second motor 10 drives the fan 8 and the cutting blade 9 to rotate. A support frame 91 is fixedly connected to the side of the fan 8 away from the extrusion plate 6, and a trumpet-shaped material guide port 92 is fixedly connected to the support frame 91.

[0025] Specifically, the fan 8, the cutting blade 9, and the support frame 91 are all fixedly sleeved on the same rotating shaft, and the outermost side of the support frame 91 is fixedly connected to the outermost side of the cutting blade 9, and the right side of the support frame 91 is fixedly connected to the trumpet-shaped material guide port 92. The setting of the support frame 91 enhances the anti-bending performance of the cutting blade 9, and provides a mounting bracket for the installation of the trumpet-shaped material guide port 92. Since the trumpet-shaped material guide port 92 is also in a rotating state, the probability of plastic particles sticking to the trumpet-shaped material guide port 92 is also greatly reduced.

[0026] Furthermore, a vent 72 is provided on the molding box 7 , and a material blocking plate 73 is provided inside the molding box 7 .

[0027] Specifically, refer to Figure 2 The vents 72 are provided on the left and right sides of the molding box 7, and the baffle plate 73 is fixedly mounted on the inner wall of the molding box 7. The baffle plate 73 blocks the space between the outer side of the trumpet-shaped guide port 92 and the top of the inner cavity of the molding box 7, so that the airflow disturbed by the cutting blade 9 is more concentrated, which is conducive to the transfer of plastic particles from the left side to the right side of the trumpet-shaped guide port 92.

[0028] Furthermore, two crushing rollers 41 are rotatably arranged in the crushing box 4 .

[0029] Specifically, the crushing box 4 is fixedly installed on the top of the conveying cylinder 2, and the plastic is crushed by the crushing roller 41 and then enters the conveying cylinder 2 for melting.

[0030] Furthermore, an auger 21 is rotatably arranged in the conveying cylinder 2, a first motor 3 is fixedly installed at one end of the conveying cylinder 2, an output shaft of the first motor 3 is fixedly connected to the auger 21, a plurality of forming holes 61 are opened in the extrusion plate 6, and the forming holes 61 connect the conveying cylinder 2 and the forming box 7.

[0031] Specifically, refer to Figures 1 to 3 First, the plastic is poured into the crushing box 4, crushed by two crushing rollers 41 and then enters the conveying cylinder 2. Under the heating of the heating element 5, the crushed plastic in the conveying cylinder 2 is melted and transported to the extrusion plate 6 by the auger 21. Then, it is shaped by the forming hole 61 and cut off by the cutting blade 9. Under the action of negative pressure, the cut plastic particles pass through the trumpet-shaped guide port 92 and then slide out of the discharge port 71.

[0032] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A granulator for producing plastic granules, comprising a workbench (1), characterized in that: A conveying cylinder (2) is fixedly mounted on the workbench (1), a crushing box (4) is arranged at the top of the conveying cylinder (2), a plurality of heating elements (5) are fixedly sleeved on the outer side of the conveying cylinder (2), a material outlet of the conveying cylinder (2) is connected to a forming box (7) via an extrusion plate (6), a fan (8) and a cutting blade (9) are rotatably arranged in the forming box (7), and a trumpet-shaped material guide port (92) is arranged between the fan (8) and the cutting blade (9).

2. A granulator for producing plastic particles according to claim 1, characterized in that: The fan (8) and the cutting blade (9) are fixedly sleeved on the same rotating shaft, and a second motor (10) is fixedly mounted on the forming box (7), and the second motor (10) drives the fan (8) and the cutting blade (9) to rotate.

3. A granulator for producing plastic particles according to claim 2, characterized in that: A support frame (91) is fixedly connected to the side of the fan (8) away from the extrusion plate (6), and the trumpet-shaped material guide port (92) is fixedly connected to the support frame (91).

4. A granulator for producing plastic particles according to claim 1, characterized in that: The molding box (7) is provided with a ventilating opening (72), and a material blocking plate (73) is arranged inside the molding box (7).

5. A granulator for producing plastic particles according to claim 1, characterized in that: Two crushing rollers (41) are rotatably arranged in the crushing box (4).

6. A granulator for producing plastic particles according to claim 1, characterized in that: An auger (21) is rotatably arranged inside the conveying cylinder (2), a first motor (3) is fixedly mounted on one end of the conveying cylinder (2), and an output shaft of the first motor (3) is fixedly connected to the auger (21).

7. A granulator for producing plastic particles according to claim 1, characterized in that: A plurality of forming holes (61) are provided in the extrusion plate (6), and the forming holes (61) are connected to the conveying cylinder (2) and the forming box (7).

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