Granulator

Abstract

The utility model discloses a granulator. Comprising a crushing device for crushing raw materials, an extruding device for preparing the crushed raw materials into material strips and extruding the material strips, a cooling device for cooling the arrived material strips, a drying device for drying the cooled material strips, and a pelletizing device for pelletizing the material strips, which are arranged in sequence, the storage device is used for storing the particles; the drying device comprises a pre-drying mechanism, an air suction mechanism and an air blowing mechanism which are sequentially arranged in the material strip advancing direction. The pre-drying mechanism comprises a hollow shell with openings in the two sides, a vibration roller assembly for removing moisture on the surfaces of the material strips through vibration and brushes arranged on the two sides of the vibration roller assembly and used for supporting and cleaning the material strips are arranged in the shell. Most moisture on the surface of the material strip is effectively removed through vibration of the vibration roller assembly, primary drying is achieved, and the surface of the material strip is further ensured to be dry through the air suction mechanism and the air blowing mechanism.

Description

Technical Field

[0001] This utility model relates to the field of plastic pellet production technology, specifically to a pelletizing machine. Background Technology

[0002] The granulator comprises a crushing device, an extrusion device, a cooling device, a drying device, and a pelletizing device arranged sequentially. During production, the raw material is first crushed by the crushing device, then conveyed to the extrusion device to extrude multiple strips. These strips then enter the cooling device for cooling, followed by drying in the drying device, and finally pelletized by the pelletizing device to obtain granules. Existing cooling devices often use water tanks for water cooling, but a significant amount of moisture remains on the surface of the strips after cooling. Although a drying device is installed after the cooling device to remove surface moisture, current drying devices use a single fan, which is inefficient and results in incomplete removal of surface moisture. This affects the color and quality of the pellets, hindering the improvement of overall product quality. Utility Model Content

[0003] Based on this, and in response to the above problems, this utility model provides a granulator.

[0004] The objective of this utility model can be achieved through the following technical solutions:

[0005] A granulator includes, in sequence, a crushing device for crushing raw materials, an extrusion device for forming the crushed raw materials into strips and extruding the strips, a cooling device for cooling the arriving strips, a drying device for drying the cooled strips, a pelletizing device for pelletizing the strips, and a storage device for storing the pellets; the drying device includes a pre-drying mechanism, a suction mechanism, and a blower mechanism arranged in sequence along the direction of strip travel; the pre-drying mechanism includes a hollow shell with openings on both sides above the cooling device, and a vibrating roller assembly inside the shell for removing moisture from the surface of the strips by vibration, and brushes on both sides of the vibrating roller assembly for supporting and cleaning the strips.

[0006] Using the above technical solution, the vibration of the vibrating roller assembly effectively removes most of the moisture from the surface of the material strip, achieving initial drying. Simultaneously, the brushes on both sides not only support the material strip but also remove impurities from its surface, ensuring a smooth and clean strip. Furthermore, the suction mechanism and blower mechanism further ensure the surface of the material strip remains dry.

[0007] In a specific embodiment of this utility model: the shell is inclined, with the end of the shell closer to the cooling device being lower and the end farther from the cooling device being higher. This structure allows water droplets falling into the shell to flow towards the cooling device under their own gravity.

[0008] In a specific embodiment of this utility model: the suction mechanism includes a suction box, the upper surface of which is distributed with multiple suction holes. The material strip passes through the top of the suction box, and an exhaust fan is connected to one side of the suction box. With this structure, the suction holes are directly aligned with the material strip, enabling rapid removal of moisture from the strip, preventing moisture residue and improving drying efficiency. Furthermore, the suction holes can also remove impurities remaining on the surface of the material strip, further ensuring a smooth and clean surface.

[0009] In a specific embodiment of this utility model: the blower mechanism includes a water receiving tank and a blower shroud located above the water receiving tank. A material passage gap is provided between the water receiving tank and the blower shroud for the material strip to pass through. The blower shroud has multiple air outlets facing downwards towards the material strip. A heater and a blower are connected to one side of the blower shroud. The blower shroud blows air onto the surface of the material strip, causing it to dry quickly. Furthermore, the addition of the heater ensures that the blown air has a higher temperature, further accelerating moisture evaporation and improving drying efficiency.

[0010] In summary, this invention firstly utilizes the synergistic effect of the vibrating roller assembly and the brush to quickly remove most of the moisture from the surface of the material strip and clean impurities, thereby reducing the surface moisture of the material strip; secondly, a vacuum fan generates negative pressure to suck up residual moisture and impurities from the surface of the material strip, further reducing the surface moisture of the material strip; and finally, a blower and a heater work together to blow out hot air to re-dry the material strip, ensuring that the surface of the material strip is dry. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings.

[0012] Figure 1 This is a schematic diagram of the structure of a granulator according to the present invention;

[0013] Figure 2 This is a top view of the granulator of this utility model;

[0014] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0015] Figure 4 yes Figure 2 Enlarged view of point B in the middle;

[0016] Figure 5 yes Figure 1 Enlarged view of point C in the middle. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1 and Figure 2 As shown, this utility model is a granulator, which includes a crushing device 10 for crushing raw materials, an extrusion device 20 for forming crushed raw materials into strips 9 and extruding the strips 9, a cooling device 30 for cooling the arriving strips 9, a drying device 40 for drying the cooled strips 9, a pelletizing device 50 for pelletizing the strips 9, and a storage device 60 for storing the pellets.

[0019] In this embodiment, the cooling device 30 is a water tank.

[0020] like Figure 1 and Figure 2 As shown, the drying device 40 includes a pre-drying mechanism 41, a suction mechanism 42, and a blower mechanism 43 arranged sequentially along the traveling direction of the material bar 9.

[0021] Combination Figure 3 As shown, in this embodiment, the pre-drying mechanism 41 includes a hollow housing 411 with openings on both sides above the cooling device. Inside the housing 411 is a vibrating roller assembly 412 that removes moisture from the surface of the strip 9 by vibration, and brushes 413 on both sides of the vibrating roller assembly 412 for supporting and cleaning the strip 9. The vibrating roller assembly 412 includes a lower vibrating roller and an upper vibrating roller located above the lower vibrating roller, with a material passage gap between the upper and lower vibrating rollers for the strip to pass through. During operation, the end of the strip is led out from the water tank, enters through the opening on the rear side of the housing, passes through the rear brush 413, through the material passage gap of the vibrating roller assembly 412, passes through the front brush, and extends out of the front opening of the housing. In this way, the high-frequency vibration of the vibrating roller assembly removes most of the moisture from the surface of the strip, achieving initial drying. Simultaneously, the brushes on both sides not only support the strip but also remove impurities from its surface, ensuring a smooth and clean surface. In addition, the pretreatment by the vibrating roller assembly and brush reduces overall energy consumption and operating costs.

[0022] like Figure 1 As shown, in this embodiment, the housing 411 is inclined. The end of the housing 411 closer to the cooling device is lower, and the end farther from the cooling device is higher. This structure allows water droplets falling into the housing to flow towards the cooling device under their own gravity.

[0023] like Figure 1 , Figure 2 and Figure 4 As shown, in this embodiment, the suction mechanism 42 includes a suction box 421. Multiple suction holes 422 are distributed on the upper surface of the suction box 421. The end of the material strip 9 passes through the top of the suction box 421. A blower 423 is connected to one side of the suction box 421. With this structure, when the material strip passes through the top of the suction box, the suction holes 422 are directly aligned with the material strip 9, quickly removing moisture from the material strip 9, preventing moisture residue, and improving drying efficiency. Furthermore, the suction holes 422 can also remove impurities remaining on the surface of the material strip, further ensuring the smoothness and cleanliness of the material strip surface. A water collection tank communicating with the suction box is provided below the suction box 421.

[0024] like Figure 1 , Figure 2 and Figure 5 As shown, in this embodiment, the blower mechanism 43 includes a water receiving tank 434 and a blower shroud 431 located above the water receiving tank 434. A material passage gap is provided between the water receiving tank 434 and the blower shroud 431 for the material strip 9 to pass through. The blower shroud 431 has multiple air outlets 432 facing downwards towards the material strip 9. A heater and a blower 433 are connected to one side of the blower shroud. The end of the material strip passes through the material passage gap and enters the cutting device 50. The blower shroud blows air onto the surface of the material strip, causing it to dry quickly. Furthermore, the addition of a heater ensures that the blown air has a higher temperature, further accelerating moisture evaporation and improving drying efficiency.

[0025] During operation, the raw materials are first crushed by the crushing device 10, then melted and extruded by the extrusion device 20. The extruded strips 9 are first cooled in a water tank, then dried by the drying device 40, and finally granulated by the cutting device 50 to obtain the desired particles. During the drying process, the strips are first subjected to high-frequency vibration of the vibrating roller assembly, which effectively removes most of the surface moisture for initial drying. The detached water droplets flow along the shell to the water tank under their own gravity. Subsequently, the exhaust fan generates negative pressure, causing the suction box to draw in residual moisture and impurities from the strip surface, further reducing surface moisture. The drawn-in water and impurities fall into the water collection tank. Finally, the blower operates, and due to the presence of a heater, the air blown out by the fan hood is hot air, further drying the strips and ensuring surface dryness. Simultaneously, the hot air blows residual impurities into the water collection tank.

[0026] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A granulator comprising, in order, a crushing device for crushing raw material, an extruding device for making the crushed raw material into a strand and extruding the strand, a cooling device for cooling the strand that has arrived, a drying device for drying the strand that has completed cooling, a pelletizing device for pelletizing the strand, and a storage device for storing the pellets, characterized in that, The drying device comprises a pre-drying mechanism, a suction mechanism and a blowing mechanism arranged in sequence along the direction of the strip's travel; the pre-drying mechanism comprises a hollow casing with openings on both sides above the cooling device, a vibration roller assembly for removing the strip's surface moisture by vibration is arranged in the casing, and brushes for supporting and cleaning the strip are arranged on both sides of the vibration roller assembly.

2. The granulator of claim 1, wherein The casing is arranged obliquely, with one end close to the cooling device being lower and the other end away from the cooling device being higher.

3. The granulator of claim 1, wherein The suction mechanism comprises a suction box, the upper surface of the suction box is provided with a plurality of suction holes, the strip passes above the suction box, and a suction fan is connected to one side of the suction box.

4. The granulator of claim 1, wherein The blowing mechanism comprises a water collecting tank and a fan cover above the water collecting tank, the water collecting tank and the fan cover have a material passing gap for the strip to pass through, the fan cover is provided with a plurality of air outlets facing the strip below, and a heater and a blower are connected to one side of the fan cover.

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