Granulating device for preparing flame retardant master batch

Abstract

A granulating device for flame retardant master batch preparation relates to the field of flame retardant master batch preparation and comprises a bottom table, a cooling water tank and a screw extruder, the bottom end of the screw extruder penetrates through the bottom table and is fixedly mounted on the bottom table, the cooling water tank is mounted on the lower side of the bottom table, and the cooling water tank is mounted on the lower side of the bottom table. A power motor is fixedly installed on the upper end face of the screw extruder, a granulation disc is fixedly installed at the position of a material extruding opening in the bottom of the screw extruder, and short shafts are connected to the positions, on the two sides of the granulation disc, of the bottom end face of the screw extruder in a rotating mode. The cutting tool is used for pelletizing extruded raw materials in water, cutting is completed in water, cooling of the extruded raw materials can be completed, meanwhile, powder generated during cutting can be prevented from spreading into air, and the overall safety performance is also guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of flame retardant masterbatch preparation, and in particular to a granulation device for flame retardant masterbatch preparation. Background Technology

[0002] Flame retardant masterbatch is an alicyclic additive flame retardant with advantages such as low dosage, good flame retardant effect, minimal impact on material physical properties, and good thermal and ultraviolet light stability. The preparation of flame retardant masterbatch requires a granulation device. We have found that traditional granulation devices require cooling the raw material before pelletizing it. This pelletizing process often generates dust that spreads into the air. If the flame retardant is similar to red phosphorus or microencapsulated APP, this dust poses an explosion risk and also pollutes the workshop environment. Utility Model Content

[0003] The purpose of this invention is to provide a granulation device for preparing flame retardant masterbatch, so as to solve the problems mentioned in the background art.

[0004] The technical problem solved by this utility model is achieved through the following technical solution:

[0005] A granulation device for preparing flame retardant masterbatch includes a base platform, a cooling water tank, and a screw extruder. The bottom end of the screw extruder passes through the base platform and is fixedly mounted on it. The cooling water tank is installed on the lower side of the base platform. A power motor is fixedly mounted on the upper end face of the screw extruder. A granulation disc is fixedly mounted at the bottom extrusion port of the screw extruder. Short shafts are rotatably connected to both sides of the granulation disc on the bottom end face of the screw extruder. A cylindrical gear and a cutting tool are fixedly mounted on each short shaft. A drive ring is rotatably connected to the bottom end face of the screw extruder. Both the inner and outer rings of the drive ring are provided with meshing teeth. The meshing teeth of the inner ring of the drive ring mesh with the cylindrical gear. A telescopic cylinder is fixedly mounted on the right end face of the cooling water tank. The telescopic end of the telescopic cylinder passes through the cooling water tank and is fixedly mounted with a rack. The rack meshes with the meshing teeth of the outer ring of the drive ring.

[0006] Preferably, two support plates are fixedly installed on the upper surface of the base platform, and a feed hopper is fixedly connected to the upper end of the two support plates. A feed pipe is fixedly connected between the bottom of the feed hopper and the feed section of the screw extruder.

[0007] Preferably, two crushing rollers are rotatably installed between the front and rear side walls at the upper opening in the inner cavity of the feed hopper. A transmission gear is fixedly installed on the shaft of each crushing roller, and the two transmission gears mesh with each other. A drive motor is fixedly installed on the rear end face of the feed hopper, and the shaft of one of the crushing rollers is fixedly connected to the output end of the drive motor.

[0008] Preferably, a filter screen is provided in the inner cavity of the cooling water tank, and the upper surface of the filter screen is provided with hanging ears, which slide against the upper edge of the cooling water tank.

[0009] Preferably, angle steel brackets are installed at the four corners of the base, and the vertical edge of the cooling water tank is embedded in the corresponding angle steel brackets.

[0010] The advantages and positive effects of this utility model are:

[0011] This invention involves directly immersing the flame retardant masterbatch in cooling water during extrusion and using a cutting tool to granulate the extruded material in the water. This water-based cutting not only cools the extruded material but also prevents the powder generated during cutting from spreading into the air, thus ensuring overall safety. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0013] Figure 1 This is a schematic diagram of the overall structure of a granulation device for preparing flame retardant masterbatch according to the present invention;

[0014] Figure 2 This is a schematic diagram of the unfolded structure of a granulation device for preparing flame retardant masterbatch according to the present invention;

[0015] Figure 3 This is a partial structural diagram of the granulation disc of a granulation device for preparing flame retardant masterbatch according to this utility model;

[0016] Figure 4 This is a schematic diagram showing the structure of the cutting blade in the granulation device for preparing flame retardant masterbatch according to this utility model.

[0017] The markings in the attached diagram are described as follows: base platform 10; angle steel bracket 11; cooling water tank 12; support plate 13; feed hopper 14; crushing roller 15; drive motor 16; feed pipe 17; power motor 18; screw extruder 19; telescopic cylinder 20; filter screen 21; hanging ear 22; rack 23; drive ring 24; granulation disc 25; short shaft 26; cylindrical gear 27; cutting tool 28. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention. These drawings are simplified schematic diagrams, which are only used to illustrate the basic structure of the present invention in an illustrative manner. Therefore, they only show the components related to the present invention.

[0019] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the utility model will be more thorough and complete.

[0020] The following is combined with Figure 1-4 This utility model will be described in detail below. For ease of description, the directions mentioned below are defined as follows: the directions of up, down, left, right, front, and back mentioned below are the same as... Figure 1 The directions of front, back, left, right, up, and down in the view are consistent. Figure 1 The directions shown are consistent with the front-facing, back-facing, left-right, up-down directions of the device.

[0021] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of at least two elements or the interaction relationship of at least two elements, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0022] The embodiments of this utility model will be further described in detail below with reference to the accompanying drawings:

[0023] Please see Figure 1-4This utility model provides an embodiment of a granulation device for preparing flame retardant masterbatch, comprising a base platform 10, a cooling water tank 12, and a screw extruder 19. Angle steel supports 11 are installed at the four corners of the bottom of the base platform 10, and the four sides of the cooling water tank 12 are embedded in the angle steel supports 11 for fixation. Cooling water is filled into the cooling water tank 12, covering the bottom end of the screw extruder 19. The bottom end of the screw extruder 19 passes through the base platform 10 and is fixedly installed on it. A power motor 18 is fixedly installed on the upper surface of the screw extruder 19, and a power motor 18 is fixedly installed at the bottom extrusion port of the screw extruder 19. The screw extruder 19 has a granulation disc 25. Short shafts 26 are rotatably connected to both sides of the granulation disc 25 on the bottom end face of the screw extruder 19. A cylindrical gear 27 and a cutting tool 28 are fixedly installed on each short shaft 26. A drive ring 24 is rotatably connected to the bottom end face of the screw extruder 19. Both the inner and outer rings of the drive ring 24 are provided with meshing teeth. The inner ring meshing teeth of the drive ring 24 mesh with the cylindrical gear 27. A telescopic cylinder 20 is fixedly installed on the right end face of the cooling water tank 12. The telescopic end of the telescopic cylinder 20 passes through the cooling water tank 12 and is fixedly installed with a rack 23. The rack 23 meshes with the outer ring meshing teeth of the drive ring 24.

[0024] When the raw material for flame retardant masterbatch is introduced into the feeding section of the screw extruder 19, the power motor 18 starts, driving the auger inside the screw extruder 19 to rotate and transport the raw material to the melting section to completely melt the raw material. Finally, the molten raw material is extruded at the die head at the bottom end, passing through the discharge hole of the granulation disc 25. Since the bottom end of the screw extruder 19 is completely submerged in cooling water at this time, the raw material directly enters the cooling water after extrusion. At the same time, the telescopic cylinder 20 starts, first pulling the rack 23 back towards the telescopic cylinder 20, thereby driving the drive... The rotating ring 24 rotates counterclockwise, thereby driving the two cylindrical gears 27 to rotate counterclockwise as well. This causes the two cutting blades 28 to rotate counterclockwise around the corresponding short shafts 26 and open. The rack 23 is pulled back and then extended to reset, thereby driving the drive ring 24 to rotate clockwise. This causes the cutting blades 28 to reciprocate and cut the extruded raw material. The cutting blades 28 are used to granulate the extruded raw material in water. Cutting in water not only cools the extruded raw material but also prevents the powder generated during cutting from spreading into the air.

[0025] It is worth mentioning that, in order to facilitate the introduction of raw materials into the screw extruder 19, in this embodiment, two support plates 13 are fixedly installed on the upper surface of the base platform 10. The upper ends of the two support plates 13 are fixedly connected to the feed bins 14. The bottom of the feed bins 14 is fixedly connected to the feed section of the screw extruder 19 by a feed pipe 17. The raw material of the flame retardant masterbatch is poured into the feed bins 14 and enters the screw extruder 19 along the feed pipe 17.

[0026] It should be noted that, in order to further accelerate the melting efficiency of the raw materials, in this embodiment, two crushing rollers 15 are rotatably installed between the front and rear side walls at the upper opening of the inner cavity of the feed bin 14. A transmission gear is fixedly installed on the rotating shaft of each crushing roller 15, and the two transmission gears mesh with each other. A drive motor 16 is fixedly installed on the rear end face of the feed bin 14. The rotating shaft of one of the crushing rollers 15 is fixedly connected to the output end of the drive motor 16. When the drive motor 16 starts, it drives the two crushing rollers 15 to rotate, thereby crushing the added flame retardant masterbatch raw materials, so that the crushed raw materials enter the screw extruder 19, which greatly improves the melting efficiency of the flame retardant masterbatch raw materials, thereby improving the granulation efficiency.

[0027] It is also worth mentioning that a filter bag 21 is provided in the inner cavity of the cooling water tank 12. The upper surface of the filter bag 21 is provided with hanging ears 22, which slide against the upper edge of the cooling water tank 12. The filter bag 21 is provided at the lower end of the extruded raw material, so that the granulated raw material falls into the filter bag 21. When it is necessary to remove the granulated raw material, it is only necessary to pull the filter bag 21 to the other side of the cooling water tank 12 and then remove the entire filter bag 21, which facilitates the subsequent drying and dehydration of the granulated raw material.

[0028] In practice, the premixed flame-retardant masterbatch raw material is first added to the feed hopper 14. At this time, the drive motor 16 starts and drives the two crushing rollers 15 to rotate, thereby crushing the added flame-retardant masterbatch raw material. The crushed raw material enters the feeding section of the screw extruder 19 through the feed pipe 17. When it reaches the feeding section, the power motor 18 starts and drives the auger inside the screw extruder 19 to rotate, transporting the raw material to the melting section to completely melt the raw material. Finally, the molten raw material is extruded at the die head at the bottom end, passing through the discharge hole of the granulation disc 25. Since the bottom end of the screw extruder 19 is completely immersed in cooling water at this time, the raw material directly enters the cooling water after extrusion. At the same time, the telescopic cylinder 20 is activated, first pulling the rack 23 back towards the telescopic cylinder 20, thereby driving the drive ring 24 to rotate counterclockwise. The movement of the gears causes the two cylindrical gears 27 to rotate counterclockwise, which in turn causes the two cutting blades 28 to rotate counterclockwise around their corresponding short shafts 26. The rack 23 is pulled back and then extends back to its original position, causing the drive ring 24 to rotate clockwise. This causes the cutting blades 28 to reciprocate and cut the extruded material. The cutting blades 28 are used to granulate the extruded material in water. This underwater cutting not only cools the extruded material but also prevents the powder generated during cutting from spreading into the air. The granulated particles fall into the filter bag 21. When it is necessary to remove the granulated material, simply pull the filter bag 21 to the other side of the cooling water tank 12 and then remove the entire filter bag 21. This facilitates the subsequent drying and dehydration of the granulated material.

[0029] It should be emphasized that the embodiments described in this utility model are illustrative and not limiting. Therefore, this utility model is not limited to the embodiments described in the specific implementation. Any other implementation methods derived by those skilled in the art based on the technical solutions of this utility model are also within the scope of protection of this utility model.

Claims

1. A granulation apparatus for preparing flame retardant masterbatch, comprising a base (10), a cooling water tank (12), and a screw extruder (19), characterized in that: The bottom end of the screw extruder (19) passes through the base platform (10) and is fixedly mounted on the base platform (10). The cooling water tank (12) is installed on the lower side of the base platform (10). A power motor (18) is fixedly mounted on the upper end face of the screw extruder (19). A granulation disc (25) is fixedly mounted at the bottom extrusion port of the screw extruder (19). Short shafts (26) are rotatably connected to both sides of the granulation disc (25) on the bottom end face of the screw extruder (19). A cylindrical gear (27) is fixedly mounted on each of the short shafts (26). A drive ring (24) is rotatably connected to the bottom end face of the screw extruder (19) along with the cutting tool (28). The inner and outer rings of the drive ring (24) are provided with meshing teeth. The inner ring meshing teeth of the drive ring (24) mesh with the cylindrical gear (27). A telescopic cylinder (20) is fixedly installed on the right end face of the cooling water tank (12). The telescopic end of the telescopic cylinder (20) passes through the cooling water tank (12) and is fixedly installed with a rack (23). The rack (23) meshes with the outer ring meshing teeth of the drive ring (24).

2. The granulation apparatus for preparing flame retardant masterbatch according to claim 1, characterized in that: Two support plates (13) are fixedly installed on the upper surface of the base (10). The upper ends of the two support plates (13) are fixedly connected to the feed bins (14). The bottom of the feed bins (14) is fixedly connected to the feed section of the screw extruder (19) by a feed pipe (17).

3. The granulation apparatus for preparing flame retardant masterbatch according to claim 2, characterized in that: Two crushing rollers (15) are rotatably installed between the front and rear side walls at the upper opening in the inner cavity of the feed bin (14). A transmission gear is fixedly installed on the rotating shaft of each crushing roller (15), and the two transmission gears mesh with each other. A drive motor (16) is fixedly installed on the rear end face of the feed bin (14), and the rotating shaft of one of the crushing rollers (15) is fixedly connected to the output end of the drive motor (16).

4. The granulation apparatus for preparing flame retardant masterbatch according to claim 3, characterized in that: The cooling water tank (12) is provided with a filter bag (21) in its inner cavity. The upper surface of the filter bag (21) is provided with hanging ears (22), which slide against the upper edge of the cooling water tank (12).

5. The granulation apparatus for preparing flame retardant masterbatch according to claim 4, characterized in that: Angle steel brackets (11) are installed at the four corners of the bottom of the base (10), and the vertical edge of the cooling water tank (12) is embedded in the corresponding angle steel brackets (11).

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