A granulating device of high-filled pet flame-retardant master batch

Abstract

The utility model discloses a kind of granulating device of high-filled PET flame-retardant master batch, including box one, the box one end is connected with box two, the box one end is connected with feed pipe, the feed pipe one end is connected with die, the box one end is equipped with motor, the output of motor is connected with box one rotation and is connected with disc body, the disc body is connected with multiple groups of cutters.The utility model raw material is extruded preset strip after being plasticized by double-screw extruder, is sent die by feed pipe.Extrude preset strip. Synchronous starting motor, drive the cutter on disc body high-speed rotation, cooperate die outlet cutting hot state strip into initial particle. While pump body extracts the water of box two bottom, is sprayed by nozzle by pipe group, pipe body, and is cooled to fall raw material anti-adhesion screen plate one.Raw material and water fall by screen plate, impurity is intercepted, then by box one inclined bottom and mouth body slide to screen plate two, water is circulated to box two by screen, raw material is screened on screen plate two dehydration, and the applicability is wider.

Description

Technical Field

[0001] This utility model relates to the technical field of PET processing, and in particular to a granulation device for high-filling PET flame-retardant masterbatch. Background Technology

[0002] High-filler PET flame retardant masterbatch is an additive used to improve the flame retardant properties of polyethylene terephthalate (PET). It is made by uniformly loading a large amount of flame retardant into PET resin, resulting in good flame retardant effect and processing performance. It can effectively inhibit the combustion of PET, and only a small amount is needed to achieve good flame retardant effect, enabling PET products to meet relevant flame retardant standards. It has high compatibility with PET resin, can be uniformly dispersed in the PET matrix, and will not affect the original physical and mechanical properties of PET, ensuring the quality and performance stability of the products.

[0003] The existing announcement number is CN220719947U, which discloses a high-filler masterbatch granulation equipment, including: a housing, and further including: a pelletizing bin, which is fixedly installed at one end of the top of the housing and is connected to the housing; a plastic pellet extrusion device, which is fixedly embedded on the side of the pelletizing bin near the top, and the plastic extrusion end of the plastic pellet extrusion device extends into the interior of the pelletizing bin; and two fixing blocks, which are symmetrically fixedly installed on opposite sides of the pelletizing bin near the top. In this invention, when the high-filler masterbatch falls onto a filter plate inside the housing, it rolls downwards along the filter plate at the outlet position, causing non-standard small particles to fall through the holes of the filter plate towards the bottom of the housing, where they fall into a collection frame for collection. This separates the high-filler masterbatch from the non-standard small particles, thereby improving the quality of the high-filler masterbatch.

[0004] While the aforementioned issue allows for the cutting of the extruded plastic material by the downward-moving cutter, thus producing high-filler masterbatch, and allowing the cut masterbatch to fall onto the guide plate and roll downwards for subsequent filtration, the extruded plastic material, being freshly formed from the extruder and typically still hot, can cause the high-temperature masterbatch to adhere to the guide plate due to incomplete cooling and solidification when it falls directly onto the plate after being cut. This adhered masterbatch accumulates on the guide plate as production continues, affecting the rolling trajectory of subsequent masterbatch and preventing some from successfully entering the filtration process. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a granulation device for high-filling PET flame-retardant masterbatch.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A granulation device for high-filling PET flame-retardant masterbatch includes a first box, a second box connected to one end of the first box, a feed pipe connected to one end of the first box, a die head connected to one end of the feed pipe, a motor installed at one end of the first box, the output end of the motor being rotatably connected to the first box and connected to a disc, the disc being connected to multiple sets of cutters, a screen plate first provided inside the first box, and openings provided at the joint ends of the first and second boxes, the two sets of openings being connected and correspondingly arranged, a second screen plate second provided inside the second box, the first and second screen plates being placed at an angle, a pump body installed at one end of the second box, the pump body being connected to the second box, a pipe assembly connected to one end of the pump body, the pipe assembly penetrating the first box and connected to the pipe body, and multiple sets of nozzles connected to one end of the pipe body, the multiple sets of nozzles being arranged at an angle.

[0007] Preferably, the bottom of the inner wall of the first box is an inclined surface, and one end and the other end of the inner wall of the first box and the second box are connected with a stop block. Multiple sets of the stop blocks are respectively attached to the first mesh plate and the second mesh plate. One end and the other end of the first mesh plate and the second mesh plate are threaded with bolts, and multiple sets of the bolts are respectively threaded to the corresponding stop blocks.

[0008] Preferably, each of the multiple sets of bolts has a knob connected to one end.

[0009] Preferably, both the first and second boxes are hinged to one end with a cover, and rubber pads are adhered to the joints between the two sets of covers and the first and second boxes, respectively.

[0010] Preferably, each of the two sets of covers is connected to a handle at one end.

[0011] Preferably, the feed pipe is made of aluminum alloy and its outer wall is wrapped with rock wool.

[0012] Preferably, the cutting tool is made of tungsten steel.

[0013] The beneficial effects of this utility model are as follows: 1. Through the coordinated operation of the motor, pump, and cutters, the raw material is fully plasticized and conveyed into the feed pipe under the shearing and mixing action of the twin-screw extruder. It is then continuously extruded into a pre-defined strip shape through the die. Simultaneously, the drive motor starts, rotating the disc equipped with high-speed rotating cutters. The cutters, in conjunction with the die outlet, cut the freshly extruded hot raw material, forming initial granular material. At the same time, the pump extracts water pre-stored at the bottom of the second chamber, conveying it through pipes and nozzles to cool the falling raw material. This helps prevent overheating and adhesion to the surface of the first screen plate. The mesh size of the first screen plate is larger than the raw material particle size, allowing the raw material and water to fall through the mesh while impurities are trapped. The water and raw material slide along the inclined bottom of the first chamber and through the nozzle onto the second screen plate, where the mesh size is smaller than the raw material particle size. The water falls through the mesh to the bottom of the second chamber for recycling. This design offers broad applicability. 2. By using the bolts and the connection between screen one and screen two, the cover can be opened to remove the dehydrated raw material. Unscrewing the bolts removes the restriction on screen one and screen two, allowing them to be removed and cleaned. This facilitates thorough cleaning of impurities and residual raw material trapped on the screen surfaces, preventing impurity accumulation from affecting filtration efficiency. Furthermore, based on actual needs such as changes in raw material particle size and adjustments to filtration precision during production, operators can replace screen one and screen two with different aperture specifications, enabling the equipment to adapt to various production scenarios and further expanding its applicability. In addition, removing screen one and screen two fully exposes the internal space of chamber one and chamber two, facilitating thorough cleaning of scale, raw material residue, and other contaminants inside the chambers. This ensures a clean internal environment, reducing the adverse effects of impurity accumulation on equipment stability and raw material processing quality, and extending the equipment's service life. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the granulation device for a high-filling PET flame-retardant masterbatch proposed in this utility model; Figure 2 for Figure 1 A schematic diagram of the rear view structure; Figure 3 for Figure 1 Cross-sectional structural diagram of the middle box 1, the cover and the box 2; Figure 4 for Figure 3 Schematic diagram of the structure of the central tube, nozzle, and cutter; Figure 5 for Figure 3 A schematic diagram of the structure of the bolt, stop block and mouth body.

[0015] In the diagram: 1. Box 1; 2. Box 2; 3. Feed pipe; 4. Die head; 5. Motor; 6. Disc; 7. Cutting tool; 8. Stop block; 9. Mesh plate 1; 10. Inlet; 11. Mesh plate 2; 12. Pump body; 13. Pipe assembly; 14. Pipe body; 15. Nozzle; 16. Cover; 17. Bolt; 18. Knob; 19. Rubber pad; 20. Handle. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] Example 1, referring to Figures 1 to 5 A granulation device for high-filling PET flame-retardant masterbatch includes a housing 1, with a housing 2 connected to one end of housing 1 and a feed pipe 3 connected to the other end of housing 1. Raw materials are plasticized by a twin-screw extruder and then fed into the feed pipe 3. A die 4 is connected to one end of the feed pipe 3, which conveys the plasticized raw materials to the die 4. The die 4 can extrude material strips of a preset shape. This is existing technology and will not be elaborated further. A motor 5 is installed at one end of housing 1. The model of motor 5 can be selected according to actual conditions. The output end of motor 5 is connected to the housing. Box 1 is rotatably connected to a disc 6. A motor 5 drives a blade 7 to rotate and cut the raw material via the disc 6. Multiple sets of blades 7 are connected to the disc 6. A mesh plate 9 is installed inside box 1. The mesh aperture of mesh plate 9 is larger than the particle size after cutting, so the raw material and water fall through the mesh into the bottom of box 1, while large particles are trapped. Both box 1 and box 2 have openings 10 at their mating ends. Water and raw material falling to the bottom of box 1 enter box 2 through the openings 10. The two sets of openings 10 are connected and correspondingly positioned. Inside the housing 2, there is a mesh plate 21. The mesh size of the mesh plate 21 is smaller than the particle size after cutting, thus the raw material is trapped. Water falls through the mesh into the bottom of the housing 2, achieving dehydration of the raw material to a certain extent. Both the mesh plate 11 and the mesh plate 21 are placed at an angle to guide the flow of raw material and water. A pump body 12 is installed at one end of the housing 2. The model of the pump body 12 can be selected according to the actual situation. One end of the pump body 12 is connected to the housing 2, and the pump body 12 draws water out of the housing 2. One end of the pump body 12 is connected to a pipe assembly 13, through which... Group 13 is conveyed into pipe body 14. Pipe group 13 passes through box 1 and is connected to pipe body 14. One end of pipe body 14 is connected to multiple sets of nozzles 15. Water in pipe body 14 is sprayed out through nozzles 15 to cool the raw material falling after cutting. Multiple sets of nozzles 15 are all set at an angle. The angled nozzles 15 can better promote the flow of raw material and prevent it from accumulating on screen plate 9. Cooling the falling raw material through nozzles 15 can, to a certain extent, avoid the problem that the raw material may stick to screen plate 9 due to the high surface temperature of the raw material.

[0018] In this embodiment, the bottom of the inner wall of box 1 is inclined, which can guide the cooled raw materials and water to slide naturally along the inclined direction to a certain extent and enter box 2 through the inlet 10, avoiding accumulation in box 1 and improving material conveying efficiency to a certain extent. Both the inner walls of box 1 and box 2 are connected to one end and the other end of a stop block 8. The stop block 8 provides limiting support for screen plate 9 and screen plate 11. Combined with bolts 17 for fixing, it can ensure that the screen plates do not shake during equipment operation to a certain extent. Multiple sets of stop blocks 8 are respectively attached to screen plate 9 and screen plate 11. One end of screen plate 9 and screen plate 11 are threadedly connected to bolts 17. Multiple sets of bolts 17 are threadedly connected to corresponding stop blocks 8. Unscrewing the bolts 17 removes the restriction on the screen plate, allowing it to be removed for cleaning or replaced with a different aperture, thus having a wide range of applicability. Each set of bolts 17 is connected to a knob 18 at one end, making it easier to rotate the bolts 17. Both housing 1 and housing 2 have a cover 16 hinged to one end. Opening the cover 16 allows the mesh plate to be removed or the housing to be cleaned. Rubber pads 19 are adhered to the contact points between the two covers 16 and housing 1 and housing 2 respectively to prevent dust from entering. A handle 20 is connected to one end of each cover 16, making it easier to open. The feed pipe 3 is made of aluminum alloy and its outer wall is wrapped with rock wool. Aluminum alloy has high strength, good thermal conductivity, and is lightweight, facilitating raw material transport. The rock wool wrapping effectively insulates the material, reducing heat loss during transport and ensuring stable plasticization. It also helps prevent high temperatures from affecting the operation of the motor 5. The blade 7 is made of tungsten steel. Tungsten steel has high hardness and wear resistance, allowing it to withstand friction and impact when cutting hot raw materials, extending the lifespan of the blade 7 and ensuring cutting accuracy and particle shape stability to a certain extent.

[0019] The working principle of this embodiment is as follows: During use, the raw material is fully plasticized under the shearing and mixing action of the twin-screw extruder, and then conveyed to the die head 4 through the feed pipe 3, where it is continuously extruded into a pre-set shape of strip. At the same time, the start motor 5 drives the disc body 6 to rotate, and the cutter 7 on the disc body 6 cooperates with the outlet of the die head 4 to cut the freshly extruded hot strip into initial granular material. During the cutting process, the pump body 12 is started simultaneously, and the pump body 12 draws out the cooling water pre-stored at the bottom of the housing 2. The cooling water is conveyed to the pipe body 14 through the pipe assembly 13, and then sprayed onto the falling granular material through multiple sets of nozzles 15 to cool the material, thus preventing the high-temperature material from sticking to the surface of the screen plate 9 due to incomplete surface solidification. The cooled material and cooling water fall together onto the screen plate 9 inside the housing 1. The mesh size of the screen plate 9 is larger than the particle size of the material, allowing the material and cooling water to fall through the mesh, while large impurities mixed in the raw material are trapped by the screen plate 9. The material and cooling water filtered by mesh plate 9 slide along the inclined surface at the bottom of chamber 1 and fall through opening 10 onto mesh plate 11 inside chamber 2. The aperture of mesh plate 11 is smaller than the particle size of the material. Cooling water falls through the mesh and collects at the bottom of chamber 2 for later circulation by pump 12. The material remains on mesh plate 11 to complete dehydration. After production, the dehydrated material can be removed by opening cover 16 with handle 20. When cleaning or replacing the mesh plate is required, unscrew bolt 17 by knob 18 to release the fixing restriction of stop block 8 on mesh plate 9 and mesh plate 11, allowing the mesh plate to be removed for cleaning or replacement. After cleaning, it can be reinstalled and fixed for continued use.

[0020] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A granulation device for high-filling PET flame-retardant masterbatch, comprising a housing (1), characterized in that, One end of the first box (1) is connected to the second box (2), one end of the first box (1) is connected to the feed pipe (3), one end of the feed pipe (3) is connected to the die head (4), one end of the first box (1) is equipped with a motor (5), the output end of the motor (5) is rotatably connected to the first box (1) and connected to a disc (6), the disc (6) is connected to multiple sets of cutters (7), the first box (1) is provided with a mesh plate (9), and the ends of the first box (1) and the second box (2) that are in contact with each other are provided with openings (10). The mouthpiece (10) is connected and correspondingly arranged. The second box (2) is provided with a mesh plate (11). The first mesh plate (9) and the second mesh plate (11) are both placed at an angle. A pump body (12) is installed at one end of the second box (2). One end of the pump body (12) is connected to the second box (2). One end of the pump body (12) is connected to a pipe assembly (13). The pipe assembly (13) passes through the first box (1) and is connected to a pipe body (14). One end of the pipe body (14) is connected to multiple sets of nozzles (15). The multiple sets of nozzles (15) are all set at an angle.

2. The granulation apparatus for high-filling PET flame-retardant masterbatch according to claim 1, characterized in that, The bottom of the inner wall of the first box (1) is inclined. The inner walls of the first box (1) and the second box (2) are connected to a stop block (8) at one end and the other end. Multiple sets of the stop blocks (8) are respectively attached to the first mesh plate (9) and the second mesh plate (11). The first mesh plate (9) and the second mesh plate (11) are threadedly connected to a bolt (17) at one end and the other end. Multiple sets of the bolts (17) are threadedly connected to the corresponding stop block (8).

3. The granulation device for high-filling PET flame-retardant masterbatch according to claim 2, characterized in that, Each of the bolts (17) has a knob (18) connected to one end.

4. The granulation apparatus for high-filling PET flame-retardant masterbatch according to claim 1, characterized in that, Both the first box (1) and the second box (2) are hinged to one end with a cover (16), and the two sets of covers (16) are respectively attached with rubber pads (19) at the joints of the first box (1) and the second box (2).

5. A granulation apparatus for high-filling PET flame-retardant masterbatch according to claim 4, characterized in that, Both sets of the cover (16) are connected to a handle (20) at one end.

6. A granulation apparatus for high-filling PET flame-retardant masterbatch according to claim 1, characterized in that, The feed pipe (3) is made of aluminum alloy and its outer wall is wrapped with rock wool.

7. A granulation apparatus for high-filling PET flame-retardant masterbatch according to claim 1, characterized in that, The cutting tool (7) is made of tungsten steel.

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