Closed feeding device for granulator

Abstract

The utility model relates to the related field of feeding devices, in particular to a closed feeding device for a granulator, which comprises a charging barrel, a conveying screw rod, a first motor, a feeding hopper, a discharging hopper, a rotating roller, a second motor, a guide plate, a beating component and the like. By arranging the guide assembly and the beating assembly, the falling speed and flow of raw materials can be indirectly controlled by adjusting the rotating speed of the output shaft of the second motor, stability in the conveying process can be maintained, the conveying amount can be controlled, and the problem of overload or uneven conveying caused by instant inflow of a large number of materials is solved; the feeding uniformity directly affects the uniformity of the feeding device for feeding the plastic waste into the granulator, so that the granulation quality is improved, the scattering assembly can scatter the gathered plastic waste, plastic gathering is reduced, the situation that the materials are accumulated and blocked in the granulator is reduced, and the stability in the feeding process is improved.

Description

Technical Field

[0001] The utility model relates to the field of feeding devices, in particular to a closed feeding device for a granulator. Background Art

[0002] Underwater pelletizer, also known as underwater pelletizer or underwater pellet making machine, is a kind of equipment used for processing polymer materials such as plastics and resins. Its working principle is to squeeze the material into water through a special extruder head in a high-temperature molten state, use the cooling effect of water to quickly solidify the molten material, and cut it into uniform pellets through a cutting device underwater. This process can not only effectively reduce the temperature of the material and prevent heat-sensitive materials from degrading in the air, but also produce high-quality pellets with smooth surface and uniform size. When using the underwater pelletizer, it is necessary to use a feeding device to transport the crushed and cleaned plastic waste into the pelletizer.

[0003] When conveying plastic waste, existing conveying devices usually manually introduce the waste into the conveying device, and the feeding uniformity is poor, making it difficult to ensure consistent temperature and pressure distribution of the plastic during the melting and plasticizing process, which can easily affect the quality of subsequent granulation. In addition, during storage and transportation, plastic waste may aggregate into clumps due to humidity and waste viscosity. The aggregated raw materials may cause accumulation and blockage of materials in the granulator, thereby affecting the stability of the feeding process. Summary of the Invention

[0004] Therefore, in order to solve the above-mentioned shortcomings, the utility model provides a closed feeding device for a granulator to solve the above-mentioned technical problems.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a closed feeding device for a granulator, comprising an upper barrel, a conveying screw rotatably installed in the upper barrel, and a first motor installed on the bottom end surface of the upper barrel. The feed end and the discharge end of the upper barrel are respectively equipped with a feed hopper and a discharge hopper. The output shaft of the first motor passes through the bottom end surface of the upper barrel and is connected to the conveying screw. It also includes a guide assembly and a scattering assembly respectively arranged in the upper barrel and the discharge hopper. The scattering assembly is used to scatter the discharged raw materials. The guide assembly includes a roller rotatably installed in the feed hopper and a second motor fixed on the side surface of the feed hopper. The side surface of the roller is equipped with a plurality of guide plates distributed in an equidistant ring shape. The output shaft of the second motor passes through the side surface of the feed hopper and is connected to the roller, and the guide plate fits the inner wall of the feed hopper.

[0006] Preferably, the scattering assembly includes a support frame installed in the discharge hopper, an electric motor fixed to the bottom end surface of the support frame, a conical cylinder arranged above the support frame and connected to the output shaft of the electric motor, and a plurality of openings are opened on the top surface of the support frame.

[0007] Preferably, the support frame is an upwardly convex arc structure.

[0008] Preferably, a distance is provided between the conical cylinder and the inner wall of the discharge hopper.

[0009] Preferably, a plurality of convex teeth are provided on the side surface of the conical cylinder, and the convex teeth on the conical cylinder are distributed at equal intervals.

[0010] Preferably, the number of guide plates on the rotating roller is 8.

[0011] Beneficial effects of the utility model:

[0012] The utility model is provided with a guide component and a scattering component. As the guide plate rotates, the plastic waste will be continuously stirred and pushed, which helps to break up the agglomeration of the raw materials and achieve a more uniform distribution state. The falling speed and flow rate of the raw materials can be indirectly controlled by adjusting the rotation speed of the second motor output shaft, which is beneficial to maintaining stability and controlling the conveying volume during the conveying process, avoiding overload or uneven conveying problems caused by a large amount of material rushing in at once, and the uniformity of the feed directly affects the uniformity of the feeding device in feeding the plastic waste into the granulator, thereby improving the quality of granulation, and the scattering component can scatter the gathered plastic waste, reduce plastic aggregation, and reduce the accumulation and blockage of materials in the granulator, thereby improving the stability of the feeding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the second motor connection structure of the present utility model.

[0015] Among them: loading barrel-1, conveying screw-2, first motor-3, feed hopper-4, discharge hopper-5, roller-6, second motor-7, guide plate-8, scattering component-9, support frame-91, electric motor-92, conical barrel-93, convex teeth-94, opening-95. DETAILED DESCRIPTION

[0016] In order to further explain the technical solution of the present invention, specific embodiments are described in detail below.

[0017] like Figure 1 As shown, the utility model provides a closed feeding device for a granulator, comprising a feeding barrel 1, a conveying screw 2 rotatably mounted in the feeding barrel 1, the conveying screw 2 being capable of horizontally rotating in the feeding barrel 1, a first motor 3 being locked and fixed to the bottom end surface of the feeding barrel 1, a feeding hopper 4 and a discharging hopper 5 being mounted on the feeding end and the discharging end of the feeding barrel 1 respectively, the output shaft of the first motor 3 passing through the bottom end surface of the feeding barrel 1 and being coaxially connected to the conveying screw 2;

[0018] like Figure 1 and Figure 2 As shown, this embodiment further includes a guide assembly and a scattering assembly 9 respectively arranged in the upper barrel 1 and the discharge hopper 5. The scattering assembly 9 is used to scatter the discharged raw materials. The guide assembly includes a roller 6 rotatably installed in the feed hopper 4 and a second motor 7 locked and fixed to the side surface of the feed hopper 4 for providing a driving force for the rotation of the roller 6.

[0019] The side surface of the roller 6 is equipped with a plurality of guide plates 8 distributed in an annular shape at equal intervals. The guide plates 8 are used to separate and transport the plastic waste to improve the uniformity of the plastic waste transportation process. The output shaft of the second motor 7 passes through the side surface of the feed hopper 4 and is coaxially connected to the roller 6. The guide plates 8 are in contact with the inner wall of the feed hopper 4.

[0020] In this embodiment, the number of guide plates 8 on the rotating roller 6 is 8, so that two symmetrical guide plates 8 can seal the inside of the feed hopper 4 and reduce the discharge of dust and impurities in the feed hopper 4 to the outside;

[0021] In this embodiment, the scattering assembly 9 includes a support frame 91 locked and fixed in the discharge hopper 5, an electric motor 92 fixed to the bottom end surface of the support frame 91, and a conical cylinder 93 arranged above the support frame 91 and connected to the output shaft of the electric motor 92. The top surface of the support frame 91 is provided with a plurality of openings 95 for discharging the plastic raw materials.

[0022] The support frame 91 is in an upwardly convex arc structure, which reduces the accumulation of plastic impurities on the top surface of the support frame 91;

[0023] Among them, a distance is set between the conical cylinder 93 and the inner wall of the discharge hopper 5, so as to facilitate the downward transportation of the plastic raw materials between the conical cylinder 93 and the discharge hopper 5;

[0024] The side surface of the conical cylinder 93 is provided with a plurality of convex teeth 94. The convex teeth 94 on the conical cylinder 93 are distributed at equal intervals, so that the convex teeth 94 can more quickly break up the accumulated plastic waste.

[0025] Specifically, when in use, the feeding device is installed at an appropriate position on the underwater granulator, and the end of the discharge hopper 5 is connected to the feed port of the granulator, and the first motor 3 and the second motor 7 are started. The first motor 3 and the second motor 7 respectively drive the conveying screw 2 and the roller 6 to rotate, and the roller 6 drives the guide plate 8 to rotate to introduce the plastic waste needed for granulation into the feed hopper 4. As the guide plate 8 rotates, the plastic waste will be continuously stirred and pushed, which helps to break up the agglomeration of the plastic waste and achieve a more uniform distribution state. When the guide plate 8 rotates downward, the plastic waste breaks away from the guide plate 8 and falls downward through the bottom of the inner side of the feed hopper 4 and enters the upper barrel 1. This process can indirectly control the falling speed and flow rate of the plastic waste by adjusting the speed of the output shaft of the second motor 7, which is conducive to maintaining stability and controlling the conveying amount during the conveying process, and avoiding the problem of overload or uneven conveying in the upper barrel 1 caused by the sudden influx of a large amount of material;

[0026] When the plastic waste enters the inner side of the feeding barrel 1, it is pushed and transported by the conveying screw 2 until the plastic waste is conveyed to the discharge hopper 5. During the conveying process of the plastic waste, the closed feeding barrel 1 is provided to reduce the diffusion of dust and impurities outward;

[0027] After the plastic waste enters the discharge hopper 5, it is discharged downward. By starting the electric motor 92 to drive the cone barrel 93 and the convex teeth 94 to rotate, the plastic waste collides with the cone barrel 93 and the convex teeth 94. The cone barrel 93 and the convex teeth 94 break up the gathered plastic materials, reducing the accumulation of plastic waste. The broken up plastic waste passes through the discharge hopper 5 and enters the underwater granulator for processing.

[0028] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A closed feeding device for a granulator, comprising a feed barrel, a conveying screw rotatably mounted within the feed barrel, and a first motor mounted on the bottom end surface of the feed barrel. A feed hopper and a discharge hopper are mounted on the feed end and the discharge end of the feed barrel, respectively. The output shaft of the first motor passes through the bottom end surface of the feed barrel and is connected to the conveying screw. Its characteristics are: It also includes a guiding assembly and a scattering assembly respectively arranged in the upper barrel and the discharge hopper. The scattering assembly is used to scatter the discharged raw materials. The guiding assembly includes a roller rotatably installed in the feed hopper and a second motor fixedly mounted on the side surface of the feed hopper. The side surface of the roller is installed with a number of guide plates distributed in an equidistant ring shape. The output shaft of the second motor passes through the side surface of the feed hopper and is connected to the roller, and the guide plate is in contact with the inner wall of the feed hopper.

2. A closed feeding device for a granulator according to claim 1, characterized in that: The scattering assembly includes a support frame installed in the discharge hopper, an electric motor fixed to the bottom end surface of the support frame, a conical cylinder arranged above the support frame and connected to the output shaft of the electric motor, and a plurality of openings are opened on the top surface of the support frame.

3. The closed feeding device for a granulator according to claim 2, characterized in that: The support frame is in an upwardly convex arc structure.

4. The closed feeding device for a granulator according to claim 2, characterized in that: A distance is set between the conical cylinder and the inner wall of the discharge hopper.

5. The closed feeding device for a granulator according to claim 2, characterized in that: The side surface of the conical cylinder is provided with a plurality of convex teeth, and the convex teeth on the conical cylinder are distributed at equal intervals.

6. The closed feeding device for a granulator according to claim 1, characterized in that: The number of guide plates on the rotating roller is 8.

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