Plastic particle surface modification and functional coating device
By designing a device for tilting the mixing tank and diverting the modifier through a diversion hood, the problems of uneven distribution of modifier in plastic granules and separate drying were solved, achieving uniform coating and rapid drying, and improving processing efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN BOJIA HENGZHI TECHNOLOGY CO LTD
- Filing Date
- 2025-05-13
- Publication Date
- 2026-04-17
AI Technical Summary
Existing plastic granule coating equipment has a simple structure, which leads to uneven distribution of modifiers, making it difficult for them to fully contact the granules. In addition, the drying process needs to be carried out separately, which increases the number of operation steps and the risk of contamination.
A device comprising a mixing tank, a motor, a fixed shaft, a flow divider, and a support pole was designed. It achieves uniform coating of the modifier by flipping and diverting the modifier, and combines hot air drying to integrate the modifier addition and drying processes.
This method achieves uniform coating and rapid drying of surface modifiers on plastic granules, improving processing efficiency and reducing operational steps and pollution risks.
Smart Images
Figure CN224127703U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mixing equipment technology, and in particular to a device for surface modification and functional coating of plastic particles. Background Technology
[0002] The purpose of surface modifier coating for plastic granules is to endow the material with new properties by constructing a functional film on the granule surface. In the coating settings, there is a wide variety of modifiers. Coupling agents can enhance the interfacial bonding between the granules and the matrix, surfactants can improve the dispersibility of the granules, and polymer coatings can adjust the surface polarity and wettability of the granules.
[0003] Most existing coating equipment has a simple structure, making it difficult to achieve comprehensive and uniform coating of plastic granules. In some equipment, the method of adding modifiers is relatively simple, simply pouring them in from the top of the mixing container. This results in extremely uneven distribution of the modifier among the granules, with some granules failing to fully contact the modifier. At the same time, many drying devices cannot effectively coordinate with the coating process, often requiring the coated granules to be transferred to separate drying equipment for further processing. This not only increases the number of steps and prolongs the overall processing time, but also may cause secondary contamination of the granules during the transfer process. Utility Model Content
[0004] The purpose of this invention is to provide a device for surface modification and functional coating of plastic particles, which can effectively solve the problems in the background art.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0006] A device for surface modification and functional coating of plastic granules includes a base on which a motor is fixedly mounted. The motor is electrically connected to an external main controller via a connecting wire. A first bracket is fixedly mounted on the base at the rear of the motor. Two second brackets are also fixedly mounted on the base near the motor. A shaft seat is fixedly mounted on each of the second brackets. An L-shaped carrier plate is fixedly mounted on one of the second brackets near the shaft seat. A mixing tank is disposed between the two second brackets. A filter screen is fixedly mounted at the bottom of the mixing tank. A first fixed shaft and a second fixed shaft are fixedly mounted on the outside of the mixing tank. One end of the first fixed shaft and the second fixed shaft are rotatably mounted in their respective shaft seats. The other end of the second fixed shaft extends into the mixing tank and is fixedly mounted with a flow divider. Multiple uprights are fixedly mounted on the outside of the flow divider. A rotary joint is fixedly mounted on one side of the L-shaped carrier plate. One end of the rotary joint is fixedly connected to the second fixed shaft, and the other end of the rotary joint is fixedly mounted with a pipe end.
[0007] As a further preferred embodiment of the present invention, a first pulley is fixedly installed at the output end of the motor, and a rotating shaft is rotatably connected between the first bracket and one of the second brackets. A second pulley and a third pulley are fixedly installed on the rotating shaft, and the second pulley is connected to the first pulley via a belt.
[0008] As a further preferred embodiment of this utility model, a fourth pulley is fixedly installed at the end of the first fixed shaft away from the mixing barrel. The fourth pulley is connected to the third pulley via belt drive. The mixing barrel is rotatably installed between two second supports via the first fixed shaft and the second fixed shaft. With the cooperation of the fourth pulley, the third pulley, the second pulley, the first pulley, and the motor, the mixing barrel can be flipped, so that the outer surface of the plastic particles in the mixing barrel is fully coated with modifier.
[0009] As a further preferred embodiment of this utility model, multiple fixed rods are fixedly installed on the outside of the upright, and a mixing blade is fixedly connected between two vertically aligned fixed rods. The second fixed shaft is connected to the diverter shroud and the cavity between the upright and the fixed rods. Multiple through holes are respectively opened on the inner side of the upright and the inner side of the fixed rod. The arrangement of the second fixed shaft and the diverter shroud can divert the modifier or hot air into the two uprights and enter the mixing tank through the through holes on the inner side of the upright and the fixed rod, thereby achieving the coating of the modifier on the outer surface of the plastic particles or heating the plastic particles in the mixing tank to dry the modifier.
[0010] As a further preferred embodiment of this utility model, two medium flow holes are provided in the pipe end, and one-way valves are fixedly installed in each of the two medium flow holes. One end of one medium flow hole is connected to an external modifier delivery pump through a pipe, and the other medium flow hole is connected to the output end of an external hot air blower through a pipe. By setting the pipe end with two medium flow holes and installing one-way valves in the medium flow holes, the modifier or hot air can be delivered to the second fixed shaft by means of the external delivery pump and the hot air blower.
[0011] Compared with the prior art, the present invention has the following beneficial effects:
[0012] In this invention, the mixing tank rotates between two second supports via a first fixed shaft and a second fixed shaft. With the help of a flow divider, a vertical rod, and mixing blades at one end of the second fixed shaft, the plastic particles inside the mixing tank can be tumbled. This allows modifier and hot air to be sprayed into the mixing tank in a timely manner, along with the pipe end, rotary joint, second fixed shaft, flow divider, and fixed rod. After the plastic particles are coated with the modifier, they are quickly dried, improving the processing efficiency of the modified coating on the outer surface of the plastic particles. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the main structure of this utility model;
[0014] Figure 2 This is a cross-sectional view of the mixing tank and the second fixed axis of this utility model;
[0015] Figure 3 for Figure 2 Enlarged view of point A in the middle;
[0016] Figure 4 for Figure 2 Enlarged view of point B in the middle.
[0017] In the diagram: 1. Base; 2. Motor; 3. First bracket; 4. Second bracket; 5. Shaft seat; 6. L-shaped carrier plate; 7. Mixing tank; 8. First fixed shaft; 9. Second fixed shaft; 10. Diverter shroud; 11. Upright pole; 12. Rotary joint; 13. Pipe end; 14. First pulley; 15. Rotating shaft; 16. Second pulley; 17. Third pulley; 18. Fourth pulley; 19. Fixed rod; 20. Mixing blade; 21. Medium flow hole; 22. One-way valve. Detailed Implementation
[0018] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0019] like Figures 1-4 As shown, the plastic particle surface modification and functional coating device provided by this utility model includes a base 1, on which a motor 2 is fixedly installed. The motor 2 is electrically connected to an external main controller via a connecting wire. A first bracket 3 is fixedly installed on the base 1 at the rear side of the motor 2. Two second brackets 4 are also fixedly installed on the base 1 near the motor 2. A shaft seat 5 is fixedly installed on the second bracket 4. An L-shaped carrier plate 6 is also fixedly installed on one of the second brackets 4 near the shaft seat 5. A mixing tank 7 is arranged between the two second brackets 4. A filter screen is fixedly installed at the bottom. A first fixed shaft 8 and a second fixed shaft 9 are fixedly installed on the outside of the mixing tank 7. One end of the first fixed shaft 8 and the second fixed shaft 9 are rotatably installed in the corresponding shaft seat 5. The other end of the second fixed shaft 9 extends into the mixing tank 7 and is fixedly installed with a diverter hood 10. Multiple uprights 11 are fixedly installed on the outside of the diverter hood 10. A rotary joint 12 is fixedly installed on one side of the L-shaped carrier plate 6. One end of the rotary joint 12 is fixedly connected to the second fixed shaft 9, and the other end of the rotary joint 12 is fixedly installed with a pipe end 13.
[0020] like Figure 1As shown, a first pulley 14 is fixedly installed at the output end of motor 2. A rotating shaft 15 is rotatably connected between the first bracket 3 and one of the second brackets 4. A second pulley 16 and a third pulley 17 are fixedly installed on the rotating shaft 15, and the second pulley 16 is connected to the first pulley 14 via a belt. A fourth pulley 18 is fixedly installed at the end of the first fixed shaft 8 away from the mixing tank 7. The fourth pulley 18 is connected to the third pulley 17 via a belt. The mixing tank 7 is rotatably installed between the two second brackets 4 via the first fixed shaft 8 and the second fixed shaft 9. With the cooperation of the fourth pulley 18, the third pulley 17, the second pulley 16, the first pulley 14, and the motor 2, the mixing tank 7 can be flipped, so that the outer surface of the plastic particles in the mixing tank 7 is fully coated with modifier.
[0021] like Figures 2-4 As shown, multiple fixed rods 19 are fixedly installed on the outer side of the upright 11, and a mixing blade 20 is fixedly connected between two vertically aligned fixed rods 19. The second fixed shaft 9 communicates with the flow divider 10 and the cavity between the upright 11 and the fixed rods 19. Multiple through holes are respectively opened on the inner side of the upright 11 and the inner side of the fixed rods 19. The arrangement of the second fixed shaft 9 and the flow divider 10 can divert the modifier or hot air into the two uprights 11, and enter the mixing tank 7 through the through holes on the inner side of the upright 11 and the fixed rods 19, thereby achieving the coating of the plastic particles with the modifier or the mixing... The plastic granules inside the barrel 7 are heated to dry the modifier. Two medium flow holes 21 are opened in the pipe end 13. One-way valves 22 are fixedly installed in the two medium flow holes 21 respectively. One end of one medium flow hole 21 is connected to an external modifier delivery pump through a pipe, and the other medium flow hole 21 is connected to the output end of an external hot air blower through a pipe. By setting up the pipe end 13 with two medium flow holes 21 and installing one-way valves 22 in the medium flow holes 21, the modifier or hot air can be delivered to the second fixed shaft 9 by means of the external delivery pump and hot air blower respectively.
[0022] It should be noted that this utility model is a device for surface modification and functional coating of plastic granules. First, plastic granules are added into the mixing tank 7, and the top cover of the mixing tank 7 is fixed. Then, the motor 2 is started, and the motor 2 drives the first pulley 14 to rotate. The first pulley 14 drives the second pulley 16 to rotate via a belt. The second pulley 16 is mounted on the rotating shaft 15, which in turn causes the rotating shaft 15 to rotate. The third pulley 17 on the rotating shaft 15 rotates accordingly. The third pulley 17 then drives the fourth pulley 18 to rotate via a belt. The fourth pulley 18 is mounted on the first fixed shaft 8, so that the mixing tank 7 is connected to the second fixed shaft 8 via the first fixed shaft 8. The shaft 9 rotates between the two second supports 4, which allows the plastic granules inside the mixing tank 7 to be turned over. At the same time, during the rotation of the mixing tank 7, the external modifier delivery pump delivers the modifier through the pipeline to one of the medium flow holes 21 in the pipe end 13. Due to the action of the one-way valve 22, the modifier can only enter the second fixed shaft 9 in one direction. The second fixed shaft 9 is connected to the cavity of the diversion hood 10, the upright rod 11, and the fixed rod 19. The modifier is diverted to the upright rod 11 through the diversion hood 10, and then enters the mixing tank 7 through the through holes on the inner side of the upright rod 11 and the fixed rod 19, and fully contacts the tumbling plastic granules to achieve the coating of the plastic granules.
[0023] After coating is completed, the modifier delivery pump is turned off and the external hot air blower is started. Hot air enters the second fixed shaft 9 through another medium flow hole 21 at pipe end 13 and one-way valve 22. Similarly, it enters the mixing tank 7 through the through holes of the diverter shroud 10, the upright rod 11 and the fixed rod 19 to dry the plastic particles coated with modifier. The filter screen at the bottom of the mixing tank 7 is used for the overflow of excess gas.
[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A device for surface modification and functional coating of plastic particles, characterized in that: The system includes a base (1), on which a motor (2) is fixedly mounted. The motor (2) is electrically connected to an external main controller via a connecting wire. A first bracket (3) is fixedly mounted on the base (1) at the rear of the motor (2). Two second brackets (4) are also fixedly mounted on the base (1) near the motor (2). A bearing seat (5) is fixedly mounted on each of the second brackets (4). An L-shaped carrier plate (6) is also fixedly mounted on one of the second brackets (4) near the bearing seat (5). A mixing tank (7) is disposed between the two second brackets (4). A filter screen is fixedly mounted at the bottom of the mixing tank (7). A first fixed shaft (8) and a second fixed shaft (9) are fixedly installed on the outside of the mixing tank (7). One end of the first fixed shaft (8) and the second fixed shaft (9) are rotatably installed in the corresponding shaft seat (5). The other end of the second fixed shaft (9) extends into the mixing tank (7) and is fixedly installed with a diverter hood (10). Multiple uprights (11) are fixedly installed on the outside of the diverter hood (10). A rotary joint (12) is fixedly installed on one side of the L-shaped carrier plate (6). One end of the rotary joint (12) is fixedly connected to the second fixed shaft (9), and the other end of the rotary joint (12) is fixedly installed with a pipe end (13).
2. The apparatus for surface modification and functional coating of plastic particles according to claim 1, characterized in that: The output end of the motor (2) is fixedly mounted with a first pulley (14). The first bracket (3) and one of the second brackets (4) are rotatably connected by a shaft (15). The shaft (15) is fixedly mounted with a second pulley (16) and a third pulley (17). The second pulley (16) is connected to the first pulley (14) by a belt.
3. The apparatus for surface modification and functional coating of plastic particles according to claim 2, wherein: A fourth pulley (18) is fixedly installed at the end of the first fixed shaft (8) away from the mixing tank (7), and the fourth pulley (18) is connected to the third pulley (17) by belt drive.
4. The apparatus for surface modification and functional coating of plastic particles according to claim 1, characterized in that: Multiple fixed rods (19) are fixedly installed on the outside of the upright (11), and a mixing blade (20) is fixedly connected between two vertical fixed rods (19). The second fixed shaft (9) is connected to the cavity between the diverter (10), the upright (11), and the fixed rods (19). Multiple through holes are respectively opened on the inner side of the upright (11) and the inner side of the fixed rods (19).
5. The apparatus for surface modification and functional coating of plastic particles according to claim 1, wherein: Two medium flow holes (21) are opened in the pipe end (13). One-way valves (22) are fixedly installed in the two medium flow holes (21). One end of one medium flow hole (21) is connected to an external modifier delivery pump through a pipe, and the other medium flow hole (21) is connected to the output end of an external hot air blower through a pipe.