Granulation equipment

Abstract

The utility model relates to production and processing of plastic particles, and discloses granulation equipment which comprises a first extruder, a second extruder, a vibrating screen, a first material guide mechanism, a storage hopper and a second material guide mechanism. Each first material guiding mechanism comprises an inclined first pipeline, a first draught fan connected to the lower end of the first pipeline and a first feeding hopper connected to the higher end of the first pipeline. In this way, the first fan blows air, and the plastic particles can be cooled while being conveyed upwards. The device has the beneficial effects of simple structure and low cost; and the plastic particles are cooled in the conveying process, so that the cooling effect is improved.

Description

Technical Field

[0001] The utility model relates to the production and processing of plastic particles, and particularly relates to a granulating device. Background Art

[0002] Plastic particles are generally used on injection molding machines and extrusion machines, and can be divided into many types according to different materials. In the production and processing of cables, the insulating outer layer of the wire core and the outer covering layer wrapped around the twisted multi-strand wire cores are both made of plastic particles as raw materials and processed by an extrusion machine. Plastic particles are generally made from recycled waste materials. First, they are remelted by an extrusion machine and extruded into strips. Then, they are cut into plastic particles of relatively consistent size by a cutting tool. Then, the plastic particles are sent into a vibrating screen through a feeding mechanism for screening to remove larger plastic particles. Finally, the plastic particles are sent into a storage hopper through the feeding mechanism. The feeding mechanism generally uses a conveyor belt or a screw conveyor. After the plastic particles are just extruded, the temperature is relatively high, and cooling measures are generally required. Currently, generally, after the plastic particles are sent into the storage hopper, they are cooled. Since the plastic particles are piled up in large quantities in the storage hopper, the cooling effect is average. Content of the Utility Model

[0003] This application provides a granulating device, which can solve the problem that the cooling effect of plastic particles in the existing granulating device is average.

[0004] In this application, a granulating device is provided, including

[0005] A first extruder, the first feed inlet is provided with a feed bin;

[0006] A second extruder, the second feed inlet is connected to the first discharge outlet of the first extruder;

[0007] A vibrating screen;

[0008] At least one group of first feeding mechanisms, connected to the second discharge outlet of the second extruder and above the vibrating screen; including an inclined first pipeline, a first blower connected to the lower end of the first pipeline, and a first feeding hopper connected to the upper end of the first pipeline;

[0009] A storage hopper, the third discharge outlet at the lower part can be opened or closed;

[0010] A second feeding mechanism, connected to the vibrating screen and the third feed inlet above the storage hopper.

[0011] Further, the direction from the first feed inlet to the first discharge outlet of the first extruder is the first horizontal direction, and the direction from the second feed inlet to the second discharge outlet of the second extruder is the second horizontal direction perpendicular to the first horizontal direction; the vibrating screen faces the second extruder, and the storage hopper faces the first extruder.

[0012] Further, the number of the first material guiding mechanisms is two groups.

[0013] Further, the air duct of the first pipeline between the first blower and the first receiving hopper is flat.

[0014] Further, a cylindrical film is arranged on the third mounting bracket of the storage hopper. The third discharge port of the storage hopper enters the upper opening of the film. A plurality of stay ropes are arranged on the edge of the lower opening of the film, and the upper ends of the stay ropes extend out of the upper opening of the film to the outside of the film.

[0015] In summary, in this application, a granulating device includes a first extruder, a second extruder, a vibrating screen, a first material guiding mechanism, a storage hopper and a second material guiding mechanism. One group of the first material guiding mechanisms includes an inclined first pipeline, a first blower connected to the lower end of the first pipeline, and a first feeding hopper connected to the higher end of the first pipeline. In this way, when the first blower blows air to convey the plastic particles upward, the plastic particles can be cooled at the same time. The beneficial effects are as follows: the structure is simple and the cost is low; the plastic particles are cooled during the conveying process, improving the cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background art, the drawings required to be used in the embodiments of the present application or the background art will be described below.

[0017] Figure 1 It is a top view of the present application;

[0018] Figure 2 It is a schematic diagram of the arrangement of the first material guiding mechanism and the second extruder;

[0019] Figure 3 It is a schematic diagram of the arrangement of the storage hopper.

[0020] In the figure,

[0021] 1. First extruder; 1a. Silo;

[0022] 2. Second extruder;

[0023] 3. Vibrating screen;

[0024] 4. First material guiding mechanism; 4a. First pipeline; 4a1. Flat section; 4b. First blower; 4c. First feeding hopper;

[0025] 5. Storage hopper; 5a. Film; 5a1. First stay rope; 5a2. Second stay rope;

[0026] 6. Second material guiding mechanism. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The following further explanations are made in conjunction with the accompanying drawings. Unless otherwise defined, the technical terms or scientific terms used in this disclosure should have the ordinary meanings understood by those of ordinary skill in the field to which this disclosure pertains. The "first", "second" and similar terms used in this disclosure do not denote any order, quantity or importance, but are only used to distinguish different components. Words such as "comprising" or "including" mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects. Words such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Upper", "lower", "left", "right", etc. are only used to represent relative position relationships, and when the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0028] A granulating device includes a first extruder 1, a second extruder 2, a vibrating screen 3, a first feeding mechanism 4, a storage hopper 5 and a second feeding mechanism 6.

[0029] The first feeding port of the first extruder 1 is provided with a silo 1a, that is, the raw materials for granulation are placed in the silo 1a and enter the first extruder 1.

[0030] The second feeding port of the second extruder 2 is connected to the first discharging port of the first extruder 1. Specifically, the equipment frames of the first extruder 1 and the second extruder 2 are set such that the height of the first extruder 1 is higher than that of the second extruder 2, and at the same time, the first discharging port of the first extruder 1 is aligned with the second feeding port of the second extruder 2, so that the rubber strip extruded by the first extruder 1 directly falls into the second extruder 2.

[0031] At the position of the second discharging port of the second extruder 2, there is also a rotating cutter and a motor for driving the cutter to rotate, and the rubber strip extruded by the second extruder 2 is cut into plastic particles by the cutter.

[0032] The vibrating screen 3 is arranged beside the second extruder 2 and is used for screening the plastic particles produced on the second extruder 2 to remove the larger plastic particles among them.

[0033] The number of the first feeding mechanisms 4 is at least one group, and it is connected above the second discharging port of the second extruder 2 and the vibrating screen 3. That is, the first feeding mechanism 4 is used to send the plastic particles produced on the second extruder 2 to the vibrating screen 3.

[0034] One group of the first feeding mechanisms 4 includes an inclined first pipeline 4a, a first blower 4b connected to the lower end of the first pipeline 4a, and a first feeding hopper 4c connected to the higher end of the first pipeline 4a. In this way, when the first blower 4b blows air, while conveying the plastic particles upward, it can also cool the plastic particles.

[0035] Optionally, the number of the first material guiding mechanisms 4 is two groups. Specifically, in one group of the first material guiding mechanisms 4, the lower end of the first pipeline 4a is provided with a first material receiving hopper, which is located below the second discharge port of the second extruder 2. Correspondingly, the first feeding hopper 4c is placed on the ground through the equipment rack; in the other group of the first material guiding mechanisms 4, the first material receiving hopper at the lower end of the first pipeline 4a is located below the first feeding hopper 4c of the previous group of the first material guiding mechanisms 4. Correspondingly, the first feeding hopper 4c is fixedly connected to the vibrating screen 3 through the equipment rack.

[0036] Similarly, the number of the first material guiding mechanisms 4 can also be set to be more, so as to extend the time for the plastic particles to be blown by the first blower 4b and improve the cooling effect. Considering comprehensively the cooling effect, production efficiency, occupied space and cost, etc., it is more appropriate to set the number of the first material guiding mechanisms 4 to two groups.

[0037] Optionally, the air duct of the first pipeline 4a between the first blower 4b and the first material receiving hopper is flat (marked as flat section 4a1). In this way, the cross-sectional area of the first pipeline 4a at this position is reduced. After the air blown by the first blower 4b passes through this position, the wind speed increases, which is more convenient for blowing the plastic particles.

[0038] The storage hopper 5 is arranged beside the vibrating screen 3 and is used for temporarily storing the plastic particles screened out by the vibrating screen 3. The third discharge port below the storage hopper 5 can be opened or closed. Specifically, a valve can be provided on the third discharge port.

[0039] The second material guiding mechanism 6 is connected to the third feeding port above the vibrating screen 3 and the storage hopper 5. That is, the second material guiding mechanism 6 is used to send the plastic particles screened out by the vibrating screen 3 to the storage hopper 5. Specifically, the second material guiding mechanism 6 can adopt a conveyor belt, a screw blade, or the same structure as the first material guiding mechanism 4.

[0040] Optionally, the direction from the first feeding port to the first discharge port of the first extruder 1 is the first horizontal direction, and the direction from the second feeding port to the second discharge port of the second extruder 2 is the second horizontal direction perpendicular to the first horizontal direction. That is, in the top view direction, the first extruder 1 and the second extruder 2 are arranged horizontally and vertically. The vibrating screen 3 faces the second extruder 2, and the storage hopper 5 faces the first extruder 1.

[0041] Setting the positions of the first extruder 1, the second extruder 2, the vibrating screen 3 and the storage hopper 5 in this way makes the layout space required by the granulating equipment more reasonable.

[0042] Optionally, a cylindrical film 5a is provided on the third mounting bracket of the storage hopper 5. Specifically, first pull ropes 5a1 are provided between the four corner positions of the upper opening of the film 5a and the equipment rack of the storage hopper 5. The third discharge port of the storage hopper 5 enters the upper opening of the film 5a, and a plurality of second pull ropes 5a2 are provided on the edge of the lower opening of the film 5a. The upper ends of the second pull ropes 5a2 extend out of the upper opening of the film 5a to the outside of the film 5a.

[0043] In this way, when bagging the plastic particles in the storage hopper 5, first, the lower opening of the film 5a is pulled upward by a plurality of second pull ropes 5a2 to reduce the length of the film 5a; then the bag is placed directly below the storage hopper 5; then the second pull ropes 5a2 are loosened to allow the lower opening of the film 5a to enter the bag. In this way, when the storage hopper 5 is opened, the plastic particles are blocked by the film 5a and will not fall outside the bag; finally, after a certain amount of plastic particles are in the bag (the accumulated plastic particles do not exceed the lower opening of the film 5a, and a certain margin also needs to be left at the opening position of the bag itself for tying and packaging), the storage hopper 5 is closed, and the lower opening of the film 5a is pulled upward by a plurality of second pull ropes 5a2 to remove the bag.

Claims

1. A granulating device, characterized in that, including a first extruder (1) with a silo (1a) at its first feed inlet; a second extruder (2) whose second feed inlet is connected to the first discharge outlet of the first extruder (1); a vibrating screen (3); at least one set of first material guiding mechanisms (4) connected above the second discharge outlet of the second extruder (2) and above the vibrating screen (3); including an inclined first pipe (4a), a first fan (4b) connected to the lower end of the first pipe (4a), and a first feeding hopper (4c) connected to the upper end of the first pipe (4a); a storage hopper (5) whose lower third discharge outlet can be opened or closed; a second material guiding mechanism (6) connected to the vibrating screen (3) and the third feed inlet above the storage hopper (5).

2. The granulating device according to claim 1, characterized in that, The direction from the first feed inlet to the first discharge outlet on the first extruder (1) is the first horizontal direction, and the direction from the second feed inlet to the second discharge outlet on the second extruder (2) is the second horizontal direction perpendicular to the first horizontal direction; the vibrating screen (3) faces the second extruder (2), and the storage hopper (5) faces the first extruder (1).

3. A granulation device according to claim 1, characterized in that, The number of the first material guiding mechanisms (4) is two sets.

4. A granulation device according to claim 1, characterized in that, The air duct of the first pipe (4a) between the first fan (4b) and the first receiving hopper is flat.

5. A granulation device according to claim 1, characterized in that, A cylindrical film (5a) is arranged on the third mounting frame of the storage hopper (5). The third discharge outlet of the storage hopper (5) enters the upper opening of the film (5a). Multiple draw ropes are arranged on the edge of the lower opening of the film (5a), and the upper ends of the draw ropes extend out of the upper opening of the film (5a) to the outside of the film (5a).

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