Plastic processing granulation device

Abstract

The utility model discloses a plastic processing and granulating device which comprises a single-screw extruder, an extrusion die head, a screw rod and a screw rod, wherein the discharge end of the single-screw extruder is provided with an extrusion die head; the cooling water tank is arranged on one side of the extrusion die head; the processing box is arranged at one end of the cooling water tank, a conveying box is arranged on one side of the processing box, and a conveying part is arranged in the conveying box; the plastic strip conveying device has the advantages that the driven roller can be adjusted up and down under the action of the reset spring, plastic strips of different sizes are tightly pressed, and conveying stability is guaranteed; the size of cut particles can be controlled through the rotating speed of the particle cutting hob and the conveying speed of the conveying part, long-strip-shaped materials are cut into particles, the screening and conveying mechanism separates the particles of different sizes through a screen, accurate screening of the particles is achieved, the screened materials are conveyed and collected at the same time, and secondary cleaning after material accumulation is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic granulation, in particular to a plastic processing and granulation device. Background Art

[0002] Plastic granulation is the process of converting various plastic forms into uniform, granular materials that are easily processed. It converts plastic raw materials or waste plastics into granular materials, which can be used as raw materials or fillers for plastic products in a wide range of applications. Plastic granulation can reuse plastic resources, reduce environmental pollution, and improve the efficiency and quality of plastic processing.

[0003] Existing plastic granulation equipment usually only has one screen for screening at the receiving end. The large particles after screening will remain on the upper layer of the screen and need to be manually cleaned and collected for a second time, which not only increases labor intensity but also affects production efficiency. Utility Model Content

[0004] The purpose of the present invention is to provide a plastic processing granulation device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a plastic processing and granulation device, comprising:

[0006] Single screw extruder, the discharge end of the single screw extruder is equipped with an extrusion die head;

[0007] A cooling water tank is placed on one side of the extrusion die head;

[0008] A processing box is placed at one end of the cooling water tank, a conveying box is provided on one side of the processing box, and a conveying part is provided inside the conveying box;

[0009] The pelletizing hob is rotatably installed in the processing box;

[0010] The screening and conveying mechanism is placed inside the processing box. The screening and conveying mechanism includes a semicircular conveying pipe. A screen is fixedly connected to the bottom of the conveying pipe. A conveying trough is provided below the conveying pipe. Screw conveying rods are provided inside the conveying pipe and the conveying trough. A No. 2 motor for driving the screw conveying rod is installed on one side of the processing box.

[0011] Preferably, the conveying portion includes a driving roller rotatably connected to the inside of a conveying box, a No. 3 motor is fixedly connected to the outside of the conveying box, and an output end of the No. 3 motor is fixedly connected to the driving roller.

[0012] Preferably, the interior of the conveying box is slidably connected to a lifting frame, the middle part of the lifting frame is rotatably connected to a driven roller, the driven roller is located directly above the active roller, the top of the conveying box is fixedly connected to a fixed frame, the middle part of the fixed frame is slidably connected to a lifting slide bar, the bottom of the lifting slide bar is fixedly connected to the lifting frame, and a return spring is provided on the outside of the lifting slide bar and between the lifting frame and the fixed frame.

[0013] Preferably, a No. 1 motor is fixedly connected to the outer side of the processing box, and the output end of the No. 1 motor is connected to the pelletizing cutter through a No. 1 transmission belt assembly.

[0014] Preferably, a material guide trough is provided on the inner wall of the processing box below the pelletizing hob, and the bottom of the material guide trough is connected to the feed pipe.

[0015] Preferably, the spiral conveying rod is a U-shaped structure, and the spiral conveying rod in the middle of the conveying pipe and the spiral conveying rod in the middle of the conveying trough are connected through a No. 2 transmission belt assembly.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: the return spring and the lifting frame of the conveying part enable the device to adapt to the conveying of plastic strips of different diameters; the driven roller can be adjusted up and down under the action of the return spring to press plastic strips of different sizes to ensure the stability of conveying; the rotation speed of the pelletizing hob and the conveying speed of the conveying part can control the size of the cut particles, cutting the long strip materials into granules, and the screening and conveying mechanism separates particles of different sizes through the screen to achieve accurate screening of the particles, and the screened materials are simultaneously conveyed and collected to prevent secondary cleaning after material accumulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a structural diagram of the lifting frame of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the pelletizing hob of the utility model;

[0020] Figure 4 This is a structural diagram of the feed trough of the utility model.

[0021] In the figure: 1. Single-screw extruder; 2. Extrusion die head; 3. Cooling water trough; 4. Conveyor box; 5. Processing box; 6. Driven roller; 7. Active roller; 8. Lifting frame; 9. Fixed frame; 10. Lifting slide bar; 11. Return spring; 12. Motor No. 1; 13. Pelletizing hob; 14. Material guide trough; 15. Conveyor pipe; 16. Screen; 17. Conveyor trough; 18. Screw conveyor rod; 19. Motor No. 2; 20. Motor No. 3. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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.

[0023] See also Figure 1 、 2 , 3, and 4, the utility model provides a technical solution: a plastic processing and granulating device, comprising: a single-screw extruder 1, comprising a barrel, a screw installed inside the barrel, a motor for driving the screw to rotate, and an electric feeding device. The screw transports the plastic raw material forward in the barrel through rotation and applies shear force to melt and plasticize it; the barrel is a container in which the screw rotates, usually made of high-strength, corrosion-resistant alloy steel; a heating device is provided in the barrel to provide the heat required for melting the plastic; at the same time, a cooling device is also provided outside the barrel to control the barrel temperature and prevent overheating; the feeding device is used to continuously and evenly add the plastic raw material into the barrel to ensure the continuity and stability of the extrusion process. The discharge end of the single-screw extruder 1 is equipped with an extrusion die 2, and the plastic melt is in the extrusion die 2 After further plasticization, it is formed into the desired shape through a mold; a cooling water trough 3 is installed on one side of the extrusion die head 2, and circulating water pipes are installed at both ends of the cooling water trough 3, and the circulating water pipes and the water pump circulate cooling water into the cooling water trough 3; a processing box 5 is installed at one end of the cooling water trough 3, and a conveying box 4 is fixedly connected to one side of the processing box 5, and a conveying part is provided inside the conveying box 4; the pelletizing hob 13 is rotatably installed in the processing box 5; the screening and conveying mechanism is placed inside the processing box 5, and the screening and conveying mechanism includes a semicircular structure of a feed pipe 15, a screen 16 is fixedly connected to the bottom of the feed pipe 15, and a feed trough 17 is provided below the feed pipe 15, and a spiral conveying rod 18 is provided inside the feed pipe 15 and the feed trough 17, and a No. 2 motor 19 for driving the spiral conveying rod 18 is installed on one side of the processing box 5.

[0024] It should be noted that the plastic particles of the present invention are fed into the feed section of the screw cavity through a feeding system; the feeding system usually includes a hopper, a feeding screw and other components to ensure that the plastic particles can continuously and evenly enter the extruder; the plastic particles entering the screw cavity are pushed forward by the rotation of the screw and gradually enter the mixing and conveying area; in this process, the plastic particles come into contact with the heater and are gradually softened and melted into a molten state by the heat generated by the rotation friction between the screw and the barrel; the molten plastic is continued to be pushed by the screw and enters the extrusion die 2; the extrusion die 2 The extruded plastic is made into a long strip, and the long strip plastic is driven to be transported to the inside of the processing box 5 through the conveying part inside the conveying box 4. The pelletizer hob 13 rotates at a high speed, and the tool of the pelletizer hob 13 and the edge of the conveying channel of the conveying box 4 cut the plastic, thereby cutting the long strip material into particles, and then falling into the feed pipe 15. The spiral conveying rod 18 conveys the material inside the feed pipe 15 forward. During this period, small particles pass through the screen 16 into the feed trough 17 and are conveyed forward, and large particles are conveyed forward on the top of the screen 16, thereby realizing screening and conveying.

[0025] See also Figure 1 、 2 As shown, the conveying part includes an active roller 7 rotatably connected to the inside of the conveying box 4, a No. 3 motor 20 is fixedly connected to the outside of the conveying box 4, the output end of the No. 3 motor 20 is fixedly connected to the active roller 7, the inside of the conveying box 4 is slidably connected to a lifting frame 8, the middle part of the lifting frame 8 is rotatably connected to the driven roller 6, the driven roller 6 is located directly above the active roller 7, the top of the conveying box 4 is fixedly connected to a fixed frame 9, the middle part of the fixed frame 9 is slidably connected to a lifting slide 10, the bottom of the lifting slide 10 is fixed to the lifting frame 8, and a return spring 11 is sleeved on the outside of the lifting slide 10 and located between the lifting frame 8 and the fixed frame 9.

[0026] It should be noted that a conveying channel is provided in the middle of the conveying box 4 of the present invention, and the conveying channel gradually decreases from the outside to the inside. Its discharge port is convenient for cooperating with the pelletizer hob 13 for cutting, and the cooled and formed long strips of plastic are fed into between the driven roller 6 and the active roller 7. Under the action of the reset spring 11, the lifting frame 8 drives the driven roller 6 to press the plastic strip downward, and the No. 3 motor 20 drives the active roller 7 to rotate. Under the action of friction, the plastic strip is conveyed to the inside of the processing box 5. Under the cooperation of the reset spring 11 and the lifting frame 8, the driven roller 6 can convey plastic strips of different diameters.

[0027] See also Figure 2 、 3As shown, a No. 1 motor 12 is fixedly connected to the outer side of the processing box 5, and the output end of the No. 1 motor 12 is connected to the pelletizing roller 13 through a No. 1 transmission belt assembly. A material guide trough 14 is provided on the inner wall of the processing box 5 and below the pelletizing roller 13, and the bottom of the material guide trough 14 is connected to the feed pipe 15.

[0028] It should be noted that the No. 1 transmission belt assembly and the No. 2 transmission belt assembly of the present invention both include two pulleys and a transmission belt that is sleeved on the outside of the two pulleys for transmitting the two pulleys. The two belts are a large pulley and a small pulley respectively. The pelletizing hob 13 is connected to the small pulley for transmission. The output end of the No. 1 motor 12 is fixedly connected to the beating pulley. The No. 1 motor 12 drives the pelletizing hob 13 to rotate at high speed through the transmission belt and the pulley to pelletize the plastic extending from the conveying channel.

[0029] See also Figure 3 、 4 As shown, the spiral conveying rod 18 is a U-shaped structure, and the spiral conveying rod 18 in the middle of the feeding pipe 15 is connected to the spiral conveying rod 18 in the middle of the feeding trough 17 through a second transmission belt assembly.

[0030] It should be noted that the feed pipe 15 of the present invention has a feed trough 17 provided above and below. The feed pipe 15 is located above the feed trough 17, and the top of the feed trough 17 is an open structure. The two spiral conveying rods 18 are respectively located inside the feed pipe 15 and the feed trough 17. The ends of the two spiral conveying rods 18 are fixedly connected with pulleys, and the two pulleys are connected by a transmission belt. The No. 2 motor 19 is fixedly connected to the outside of the processing box 5, and the output end of the No. 2 motor 19 is fixedly connected to one of the pulleys, so that the two spiral conveying rods 18 can rotate at the same time. While the spiral conveying rod 18 in the feed pipe 15 conveys the particles forward, the screen 16 screens the particles, so that small particles enter the feed trough 17 through the screen 16, and are transported to the receiving end through the spiral conveying rod 18 inside the feed trough 17, and large particles are transported forward to the centralized processing position.

[0031] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "two ends", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one such feature.

[0033] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A plastic processing granulation device, characterized in that: include: A single-screw extruder (1), wherein an extrusion die head (2) is installed at the discharge end of the single-screw extruder (1); A cooling water trough (3), the cooling water trough (3) is placed on one side of the extrusion die head (2); A processing box (5) is placed at one end of the cooling water tank (3), a conveying box (4) is provided on one side of the processing box (5), and a conveying portion is provided inside the conveying box (4); A pelletizing hob (13), the pelletizing hob (13) is rotatably mounted in the processing box (5); The screening and conveying mechanism is placed inside the processing box (5), and the screening and conveying mechanism includes a semicircular conveying pipe (15), a screen (16) is fixedly connected to the bottom of the conveying pipe (15), a conveying trough (17) is provided below the conveying pipe (15), and a spiral conveying rod (18) is provided inside the conveying pipe (15) and the conveying trough (17), and a second motor (19) for driving the spiral conveying rod (18) is installed on one side of the processing box (5).

2. A plastic processing granulation device according to claim 1, characterized in that: The conveying part includes a driving roller (7) rotatably connected to the inside of a conveying box (4), a third motor (20) is fixedly connected to the outside of the conveying box (4), and an output end of the third motor (20) is fixedly connected to the driving roller (7).

3. A plastic processing and granulating device according to claim 2, characterized in that: The interior of the conveying box (4) is slidably connected to a lifting frame (8), the middle of the lifting frame (8) is rotatably connected to a driven roller (6), and the driven roller (6) is located directly above the active roller (7). The top of the conveying box (4) is fixedly connected to a fixed frame (9), the middle of the fixed frame (9) is slidably connected to a lifting slide bar (10), the bottom of the lifting slide bar (10) is fixedly connected to the lifting frame (8), and a return spring (11) is sleeved on the outside of the lifting slide bar (10) and located between the lifting frame (8) and the fixed frame (9).

4. A plastic processing and granulating device according to claim 1, characterized in that: A No. 1 motor (12) is fixedly connected to the outside of the processing box (5), and an output end of the No. 1 motor (12) is transmission-connected to a pelletizing roller (13) via a No. 1 transmission belt assembly.

5. A plastic processing and granulating device according to claim 4, characterized in that: A material guide trough (14) is provided on the inner wall of the processing box (5) and below the pelletizing roller (13), and the bottom of the material guide trough (14) is communicated with a material delivery pipe (15).

6. A plastic processing and granulating device according to claim 1, characterized in that: The spiral conveying rod (18) is a U-shaped structure, and the spiral conveying rod (18) in the middle of the feeding pipe (15) and the spiral conveying rod (18) in the middle of the feeding trough (17) are connected by transmission through a second transmission belt assembly.

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