Flame retardant extrusion granulator

Abstract

The utility model relates to the technical field of flame retardant production, in particular to a flame retardant extrusion granulator which comprises a granulator body, a scraper blade, an upper shell, a lower shell and a driving component, the lower shell is mounted at the top of one end of the granulator body and is communicated with the granulator body, and a screen for screening a flame retardant raw material in a use state is arranged in the middle of the inner side of the shell; the upper shell is mounted at the top end of the lower shell and communicates with the lower shell, and a crushing assembly which extends towards the inner side of the lower shell and crushes the flame retardant raw materials in the using state is arranged in the middle of the top end of the upper shell and located above the screen. Raw materials fall towards the screen along the inner side of the lower shell and make contact with the smashing assembly in the falling process to generate impact and cutting force, so that the raw materials fall on the screen after being smashed, meanwhile, the smashing assembly drives the scraper to rotate in the screen, the raw materials are conveyed into the pelletizer body, the fluidity of the raw materials is improved, and the raw materials are conveyed to the pelletizer body. The feeding process is efficient and smooth, and the production efficiency is remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of flame retardant production technology, specifically to a flame retardant extrusion granulator. Background Technology

[0002] Flame retardants are additives used to improve the flame resistance of materials, prevent them from being ignited, and inhibit the spread of flames.

[0003] Chinese patent document CN214447631U discloses a flame retardant split granulation extruder that can avoid clogging, including a crushing box, a rotating shaft rotatably connected to the crushing box, a feed hopper provided in the crushing box, a chassis fixedly connected to the bottom of the rotating shaft, and a number of razors installed on the chassis; the crushing box is provided with a connecting chamber, a screen is provided in the connecting chamber, and an extrusion cylinder is provided in the connecting chamber.

[0004] However, in the above scheme, the centrifugal force generated by the rotation of the chassis and the razor is used to throw the crushed material towards the connecting chamber. However, since there is a screen between the crushing box and the connecting chamber, the screen will block some of the material, making it easy for material to accumulate between the crushing box and the connecting chamber, which will hinder the material transmission and affect the production efficiency. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing a flame retardant extrusion granulator.

[0006] The technical solution of this utility model is: a flame retardant extrusion granulator, comprising a granulator body, a scraper, an upper shell, a lower shell, and a drive assembly;

[0007] The lower shell is installed at the top of one end of the granulator body and is connected to the granulator body. The inner middle of the shell is provided with a screen for screening flame retardant raw materials in use.

[0008] The upper shell is installed at the top of the lower shell and communicates with the lower shell. The upper shell has a crushing component at the top center, above the screen, that extends into the lower shell and crushes the flame retardant raw material in use.

[0009] The drive assembly is mounted on the side of the upper housing and connected to the crushing assembly;

[0010] There is at least one scraper, which is located at the bottom of the crushing assembly and is movably connected to the screen.

[0011] Preferably, the lower housing includes a conveying housing and a crushing housing;

[0012] The conveyor shell is installed at the top of the granulator body and is connected to the granulator body;

[0013] The crushing shell is located at the top of the conveying shell and is connected to the conveying shell; the inner diameter of the crushing shell gradually decreases from the conveying shell toward the upper shell along the height direction of the crushing shell.

[0014] Preferably, flange plates are provided at the bottom of the crushing shell, the top of the conveying shell, and the top of the screen. The screen is located between the conveying shell and the crushing shell, and the three flange plates are stacked and connected by bolts.

[0015] Preferably, the upper housing includes a material holding shell and a cover plate;

[0016] The material holding shell is installed at the top of the crushing shell and is connected to the crushing shell; the inner diameter of the material holding shell gradually increases from the crushing shell toward the top of the material holding shell along the height direction of the material holding shell.

[0017] The cover is installed on the top of the material container and has a feed inlet on one side of the top.

[0018] Preferably, the crushing component includes a rotating shaft and crushing blades;

[0019] The rotating shaft is rotatably mounted in the middle of the cover plate and its bottom end extends to the inside of the conveyor shell;

[0020] There are multiple shredder blades, which are installed at equal intervals on the outside of the rotating shaft and on the inside of the crushing shell.

[0021] Preferably, multiple crushing blades are arranged in a staggered manner according to the center of the rotating shaft, and the ends of the multiple crushing blades have gaps with the inner wall of the crushing shell, and the gap size is the same.

[0022] Preferably, a guide block and a spiral plate are provided on the outer side of the rotating shaft, above the crushing blade, and on the inner side of the material container.

[0023] Preferably, a support frame is provided on the inner side of the conveyor shell, and the support frame is sleeved on the bottom end of the screen.

[0024] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial technical effects:

[0025] This invention involves the raw material falling along the inner side of the lower shell onto the screen. During the falling process, the raw material comes into contact with the crushing component and generates impact and cutting force, causing the raw material to be crushed and fall onto the screen. At the same time, the crushing component drives the scraper to rotate in the screen, conveying the raw material into the granulator body, improving the flowability of the raw material, ensuring a high-efficiency and smooth feeding process, and significantly improving production efficiency. Attached Figure Description

[0026] Figure 1 This is a perspective view of one embodiment of the present invention.

[0027] Figure 2 This is an exploded view of the shell structure in one embodiment of the present invention.

[0028] Figure 3 This is a cross-sectional schematic diagram of the shell structure in one embodiment of the present invention.

[0029] Reference numerals in the attached drawings: 1. Granulator body; 2. Conveying shell; 3. Flange plate; 4. Crushing shell; 5. Material holding shell; 6. Rotating shaft; 7. Chain; 8. Sprocket; 9. Motor; 10. Screen; 11. Support frame; 12. Spiral plate; 13. Guide block; 14. Crushing blade; 15. Scraper; 16. Cover plate. Detailed Implementation

[0030] Example 1

[0031] like Figure 1-3 As shown, the present invention proposes a flame retardant extrusion granulator, which includes a granulator body 1, a scraper 15, an upper shell, a lower shell, and a drive assembly.

[0032] The granulator body 1 consists of a motor, outer shell, heating structure, cooling structure, screw, extruder head, and mold. During use, it is used to transport raw materials to the inside of the outer shell. The motor drives the screw to rotate and transport the raw materials. At the same time, the heating structure melts the raw materials during the transport process, and the screw transports the molten raw materials to the extruder head for extrusion. The molten raw materials are discharged and cooled and granulated through the cooperation of the extruder head and the mold. This is the prior art, and the figure is only for illustration.

[0033] The lower shell is installed at the top of one end of the granulator body 1 and is connected to the granulator body 1. A screen 10 for screening flame retardant raw materials in use is provided in the middle of the inner side of the shell.

[0034] The upper shell is installed at the top of the lower shell and communicates with the lower shell. The upper shell has a crushing component that extends to the inner side of the lower shell and crushes the flame retardant raw material in use at the middle of the top of the upper shell and above the screen 10.

[0035] The drive assembly is mounted on the side of the upper housing and connected to the crushing assembly. The drive assembly consists of a chain 7, a sprocket 8 and a motor 9, which are existing technologies and will not be described in detail here.

[0036] The screen 10 is cone-shaped, and a scraper 15 is provided on the inner side of the screen 10. The scraper 15 is connected to the bottom end of the crushing component. It is used to rotate the scraper 15 inside the screen 10 when driven by the crushing component, so as to squeeze the crushed raw material onto the surface of the screen 10, thereby improving the raw material screening efficiency. In use, the scraper 15 can be arranged at an angle (not shown in the figure), so that the crushed raw material can move upward and contact the crushing component again, thereby making the raw material completely crushed.

[0037] In this embodiment, the crushing component is rotated inside the lower shell by the driving component, and the raw material is added to the inside of the upper shell. At the same time, the upper shell guides the raw material to fall to the inside of the lower shell, and the raw material comes into contact with the crushing component during the fall, so that the crushing component impacts and cuts the raw material, thereby crushing the raw material. At the same time, the crushed raw material moves to the screen 10 in the lower shell, so that the screen 10 screens it and conveys it to the granulator body 1. Meanwhile, the crushing component drives the scraper 15 to rotate in the screen 10, so that the scraper 15 carries the crushed raw material to move in the screen 10, thereby realizing the rapid screening and conveying of the raw material, effectively improving the processing efficiency of flame retardant raw materials.

[0038] Example 2

[0039] like Figure 2 As shown, the flame retardant extrusion granulator proposed in this utility model differs from that in Embodiment 1 in that the lower shell includes a conveying shell 2 and a crushing shell 4.

[0040] The conveyor shell 2 is installed at the top of the granulator body 1 and is connected to the granulator body 1;

[0041] The crushing shell 4 is located at the top of the conveying shell 2 and is connected to the conveying shell 2; the inner diameter of the crushing shell 4 gradually decreases from the conveying shell 2 toward the upper shell along the height direction of the crushing shell 4.

[0042] In an optional embodiment, flange plates 3 are provided at the bottom of the crushing shell 4, the top of the conveying shell 2 and the screen 10. The screen 10 is located between the conveying shell 2 and the crushing shell 4. The three flange plates 3 are stacked and connected by bolts to separate the conveying shell 2 from the crushing shell 4 during use, so that the screen 10 can be disassembled and maintained.

[0043] In an optional embodiment, a support frame 11 is provided on the inner side of the conveying shell 2. The support frame 11 is sleeved on the bottom end of the screen 10 and is used to limit the position of the bottom end of the screen 10 during use, thereby improving the strength of the screen 10.

[0044] In this embodiment, the screen 10 is installed between the crushing shell 4 and the conveying shell 2 by the flange plate 3, which makes it easier to disassemble and assemble the screen 10. At the same time, the shape of the crushing shell 4 is arranged in conjunction with the crushing components, so that the raw materials are subjected to more uniform impact and cutting when moving downward in the crushing shell 4, which further improves the crushing effect.

[0045] Example 3

[0046] like Figure 2 As shown, the present invention proposes a flame retardant extrusion granulator. The difference between this embodiment and the first embodiment is that the upper shell includes a material holding shell 5 and a cover plate 16.

[0047] The material holding shell 5 is installed at the top of the crushing shell 4 and is connected to the crushing shell 4; the inner diameter of the material holding shell 5 gradually increases from the crushing shell 4 toward the top of the material holding shell 5 along the height direction of the material holding shell 5.

[0048] The cover plate 16 is installed on the top of the material container 5 and has a feed inlet on one side of the top.

[0049] In this embodiment, the crushing component is installed in the material holding shell 5 and the crushing shell 4 by the cover plate 16. The material holding shell 5 is used to hold the raw material and guide the flow of the raw material by changing the inner diameter of the material holding shell 5. This reduces the amount of raw material conveyed by the material holding shell 5 and the crushing shell 4, thereby improving the crushing effect of the raw material in the crushing shell 4 and avoiding the situation where the raw material is too much and the crushing is incomplete.

[0050] Example 4

[0051] like Figure 3 As shown, the present invention proposes a flame retardant extrusion granulator. The difference between this embodiment and the first embodiment is that the crushing component includes a rotating shaft 6 and a crushing blade 14.

[0052] The rotating shaft 6 is rotatably mounted in the middle of the cover plate 16 and its bottom end extends to the inside of the conveying shell 2;

[0053] There are multiple shredder blades 14, which are installed at equal intervals on the outside of the rotating shaft 6 and on the inside of the crushing shell 4.

[0054] In an optional embodiment, multiple crushing blades 14 are staggered around the center of the rotating shaft 6. The ends of the multiple crushing blades 14 have gaps with the inner wall of the crushing shell 4, and the gaps are of the same size. The gaps can also be arranged from top to bottom from large to small, so that the crushing blades 14 and the crushing shell 4 work together to thoroughly crush the raw materials and improve the crushing effect.

[0055] In an optional embodiment, a guide block 13 and a spiral plate 12 are provided on the outer side of the rotating shaft 6 and above the crushing blade 14 and on the inner side of the material holding shell 5. The spiral plate 12 is used to rotate with the rotating shaft 6 during use and to drive the raw material in the material holding shell 5 to move into the crushing shell 4, so as to avoid the raw material from accumulating in the material holding shell 5.

[0056] In this embodiment, by arranging multiple crushing blades 14 alternately around the center of the rotating shaft 6 and at equal distances along the length of the rotating shaft 6, the inner side of the crushing shell 4 has a multi-layer crushing structure when the rotating shaft 6 drives the multiple crushing blades 14 to rotate, ensuring that the raw material has impact and cutting force with the crushing blades 14, so that the raw material is completely crushed.

[0057] In this invention, the drive assembly rotates the shaft 6 in the middle of the cover plate 16, causing the shaft 6 to drive the crushing blade 14 to rotate synchronously in the crushing shell 4. Raw materials are added from the feed inlet of the cover plate 16 to the holding shell 5, which then holds the raw materials and guides them towards the inside of the crushing shell 4. The shaft 6 also drives the spiral plate 12 to rotate within the holding shell 5, causing the spiral plate 12 to smoothly carry the raw materials from the inside of the holding shell 5 into the crushing shell 4. During this descent, the raw materials repeatedly impact and cut the crushing blade 14, resulting in pulverization. The pulverized materials then fall into the screen 10, causing the screen 10 to... The material is screened, and the rotating shaft 6 drives the scraper 15 to rotate in the screen 10, so that the scraper 15 carries the crushed material to move in the screen 10, thereby increasing the screening efficiency of the screen 10. The crushed material falls into the inner side of the granulator body 1 through the conveying shell 2. The motor of the granulator body 1 drives the screw to rotate and convey the material. At the same time, the heating structure melts the material during the conveying process, and the screw conveys the molten material to the extruder head for extrusion. The molten material is discharged and cooled and granulated through the cooperation of the extruder head and the die.

[0058] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A flame retardant extrusion granulator, characterized in that, Includes granulator body (1), scraper (15), upper shell, lower shell and drive assembly; The lower shell is installed on the top of one end of the granulator body (1) and communicates with the granulator body (1). A screen (10) for screening flame retardant raw materials in use is provided in the middle of the inner side of the shell. The upper shell is installed at the top of the lower shell and communicates with the lower shell. The upper shell has a crushing component that extends to the inner side of the lower shell and crushes the flame retardant raw material in the use state at the middle of the top of the upper shell and above the screen (10). The drive assembly is mounted on the side of the upper housing and connected to the crushing assembly; The number of scrapers (15) is at least one. The scraper (15) is located at the bottom of the crushing assembly and is movably connected to the screen (10).

2. The flame retardant extrusion granulator according to claim 1, characterized in that, The lower housing includes a conveying housing (2) and a crushing housing (4); The conveying shell (2) is installed at the top of the granulator body (1) and communicates with the granulator body (1); The crushing shell (4) is set at the top of the conveying shell (2) and communicates with the conveying shell (2); the inner diameter of the crushing shell (4) gradually decreases from the conveying shell (2) toward the upper shell along the height direction of the crushing shell (4).

3. The flame retardant extrusion granulator according to claim 2, characterized in that, Flange plates (3) are provided at the bottom of the crushing shell (4), the top of the conveying shell (2) and the screen (10). The screen (10) is located between the conveying shell (2) and the crushing shell (4). The three flange plates (3) are stacked and connected by bolts.

4. The flame retardant extrusion granulator according to claim 2, characterized in that, The upper shell includes a material container (5) and a cover plate (16); The material holding shell (5) is installed at the top of the crushing shell (4) and communicates with the crushing shell (4); the inner diameter of the material holding shell (5) gradually increases from the crushing shell (4) toward the top of the material holding shell (5) along the height direction of the material holding shell (5); The cover plate (16) is installed on the top of the material container (5) and has a feed inlet on one side of the top.

5. The flame retardant extrusion granulator according to claim 4, characterized in that, The crushing assembly includes a rotating shaft (6) and a crushing blade (14); The rotating shaft (6) is rotatably mounted in the middle of the cover plate (16) and its bottom end extends to the inside of the conveying shell (2); There are multiple crushing blades (14), which are installed at equal intervals on the outside of the rotating shaft (6) and on the inside of the crushing shell (4).

6. The flame retardant extrusion granulator according to claim 5, characterized in that, Multiple crushing blades (14) are arranged in an alternating pattern according to the center of the rotating shaft (6). The ends of the multiple crushing blades (14) have gaps with the inner wall of the crushing shell (4), and the gap size is the same.

7. The flame retardant extrusion granulator according to claim 5, characterized in that, A guide block (13) and a spiral plate (12) are provided on the outside of the rotating shaft (6) and above the crushing blade (14) and on the inside of the material holding shell (5).

8. The flame retardant extrusion granulator according to claim 2, characterized in that, A support frame (11) is provided on the inner side of the conveying shell (2), and the support frame (11) is sleeved on the bottom end of the screen (10).

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