Mixing device for modifying polypropylene particles
By designing a mixing device consisting of a screening hopper and a mixing hopper, the problems of incomplete impurity removal, difficulty in quantitative feeding, and uneven mixing in traditional devices were solved, achieving efficient modification of polypropylene particles and improvement of product performance.
Patent Information
- Application Number
- CN202422832123.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-20
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-11-20
AI Technical Summary
Traditional mixing devices suffer from problems such as incomplete impurity removal, difficulty in quantitative feeding, low stirring efficiency, and uneven mixing during the modification of polypropylene particles, which affect the modification effect and product performance stability.
A mixing device comprising a screening hopper mechanism and a mixing hopper mechanism was designed, which has the functions of efficient screening, precise quantitative feeding and efficient mixing. Impurities are removed by a screen plate, quantitative feeding is achieved by a fan-shaped plate, and a mixing motor drives the mixing shaft and blades to ensure uniform mixing. A sealing design is adopted to prevent leakage.
It achieves efficient removal of impurities, ensures material purity, enables precise control of quantitative feeding, improves the uniform distribution of modifiers in polypropylene particles, enhances modification effect and product performance stability, and reduces cleaning and maintenance costs.
Smart Images
Figure CN223532760U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of polypropylene material production technology, and specifically designs a mixing device for modifying polypropylene particles. Background Technology
[0002] In the modification of polypropylene particles, the mixing device plays a crucial role. Traditional mixing devices typically employ simple stirring to directly mix the polypropylene particles with the modifier; however, this method has several shortcomings. First, impurities and excessively large particles that may be present in the raw materials cannot be effectively removed, which affects the purity and performance of the modified polypropylene particles. Second, traditional mixing devices often lack precise metering mechanisms, making it difficult to accurately control the proportions of each component during modification, thus affecting the performance stability of the final product. Furthermore, stirring efficiency and mixing uniformity are another major challenge faced by traditional mixing devices; insufficient stirring leads to uneven distribution of the modifier within the polypropylene particles, reducing the modification effect.
[0003] The industry has begun exploring more advanced mixing devices for modifying polypropylene particles. However, existing mixing devices still have some limitations in design and function. For example, some devices, although equipped with screening mechanisms, do not achieve ideal screening results and cannot effectively remove impurities and excessively large particles from the raw materials. Other devices, while possessing quantitative feeding capabilities, are complex to operate and difficult to control precisely. In addition, issues with stirring efficiency and mixing uniformity persist, hindering the improvement of the properties of modified polypropylene particles. Utility Model Content
[0004] To address the problems existing in the technical background, this utility model provides a mixing device for modifying polypropylene particles, which has the characteristics of efficient screening, precise quantitative feeding, efficient stirring and uniform mixing, good sealing performance, and easy cleaning and maintenance, so as to meet the characteristics and modification requirements of different polypropylene particles.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A mixing device for modifying polypropylene particles, characterized in that it includes a fixed support, a screening hopper mechanism is fixedly installed on the top of the fixed support, and a stirring hopper mechanism is provided on the fixed support and below the screening hopper mechanism.
[0007] The screening hopper mechanism includes a feeding hopper, a screen plate is provided on the upper side of the feeding hopper, an outer plate is fixedly provided on the upper side of the feeding hopper and outside the screen plate, a discharge port is provided at the lower end of the feeding hopper, a first fixed shaft and a second fixed shaft are symmetrically provided at both ends of the discharge port, a first sector plate and a second sector plate are rotatably provided on the first fixed shaft and the second fixed shaft, a first fixed rod is fixedly provided on the first sector plate and above the first fixed shaft, a second fixed rod is fixedly provided on the second sector plate and below the second fixed shaft, a connecting arm is connected between the first fixed rod and the second fixed rod, the two ends of the connecting arm are rotatably connected to the first fixed rod and the second fixed rod, and an arc plate is provided on the lower side of the first sector plate and the second sector plate.
[0008] In a preferred embodiment, rocker arms are fixedly mounted on the outer sides of the first sector plate and the second sector plate, respectively.
[0009] In a preferred embodiment, the outer side of the arc-shaped plate is fixedly provided with a folded edge, one of the arc-shaped plates is fixedly provided with an L-shaped bending plate on the inner side, and the inner side of the other arc-shaped plate is provided with a pad opposite to the L-shaped bending plate. The L-shaped bending plate extends upward to the inner side of the first sector plate or the second sector plate.
[0010] In a preferred embodiment, the connecting arm includes a double-ended screw with threads at both ends and two connecting blocks. The two ends of the double-ended screw are respectively connected to the two connecting blocks by threads, and an adjusting nut is provided at the connection between the double-ended screw and the connecting blocks.
[0011] In a preferred embodiment, the mixing hopper mechanism includes a mixing hopper, a mixing box is fixedly installed at the lower part of the mixing hopper, a mixing shaft and mixing blades are installed inside the mixing box, the outer end of the mixing shaft is connected to a mixing motor, the mixing motor is fixedly installed on the outside of the mixing box, and a discharge port is provided at the bottom of the mixing box.
[0012] The beneficial effects of this utility model are:
[0013] High-efficiency screening and improved purity: By setting a screen plate at the top of the hopper, impurities and excessively large particles in the raw materials can be effectively removed, ensuring high purity of the materials entering the mixing stage, which lays a good foundation for subsequent modification treatment.
[0014] Quantitative feeding and precise control: Utilizing an adjustment mechanism composed of the first and second sector plates, the opening degree of the discharge port can be precisely controlled by manually or mechanically operating a rocker arm, achieving quantitative feeding. This design not only improves the utilization rate of raw materials but also ensures the accuracy of the proportions of each component during the modification process, contributing to improved performance stability of the final product.
[0015] Uniform mixing and efficient stirring: The mixing hopper mechanism uses a high-performance stirring motor to drive the stirring shaft and stirring blades to rotate, ensuring that the materials are fully mixed in the mixing tank, improving the mixing efficiency, and enabling the modifier to be evenly distributed in the polypropylene particles, thereby improving the modification effect.
[0016] Sealing performance and leak-proof design: The ingenious combination of curved plates, folded edges, L-shaped bent plates, and gaskets effectively enhances the sealing performance of the device, preventing material leakage during screening and mixing. This not only reduces raw material waste but also avoids environmental pollution and safety hazards.
[0017] Easy to clean and maintain: The design of the mixing hopper and mixing tank takes into full consideration the ease of cleaning, avoids material residue, and reduces cleaning costs and time.
[0018] Flexibility and applicability: This device can be adjusted and optimized according to the characteristics and modification requirements of different polypropylene particles, such as changing the screen mesh size, adjusting the stirring time and speed, etc., which has high flexibility and applicability. Attached Figure Description
[0019] The accompanying drawings of this utility model are as follows:
[0020] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;
[0021] Figure 2 This is a schematic diagram of the planar structure of this utility model;
[0022] Figure 3 This is a schematic diagram of the bottom structure of the screening hopper mechanism of this utility model;
[0023] Figure 4 This is a schematic diagram of the connecting arm structure of this utility model;
[0024] Figure 5 This is a cross-sectional structural diagram of the mixing tank of this utility model;
[0025] Figure 6 This is a top view of the structure of this utility model.
[0026] The attached figures are labeled as follows:
[0027] 1. Fixed bracket; 2. Screening hopper mechanism; 21. Feed hopper; 22. Screen plate; 23. Outer plate; 24. Discharge port; 25. First fixed shaft; 26. Second fixed shaft; 27. First sector plate; 28. Second sector plate; 29. First fixed rod; 210. Second fixed rod; 211. Connecting arm; 212. Arc plate; 213. Rocker arm; 214. Folded edge; 215. L-shaped bending plate; 216. Pad plate; 217. Double-ended screw; 218. Connecting block; 219. Adjusting nut; 3. Mixing hopper mechanism; 31. Mixing hopper; 32. Mixing box; 33. Mixing shaft; 34. Mixing blade; 35. Mixing motor; 36. Feed port. Detailed Implementation
[0028] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0029] like Figure 1 As shown, a mixing device for modifying polypropylene particles includes a fixed support 1, a screening hopper mechanism 2 is fixedly installed on the top of the fixed support 1, and a stirring hopper mechanism 3 is provided on the fixed support 1 and below the screening hopper mechanism 2.
[0030] like Figure 1 , Figure 3 and Figure 6 As shown, the screening hopper mechanism 2 includes a feeding hopper 21, a screen plate 22 is provided on the upper side of the feeding hopper 21, an outer plate 23 is fixedly provided on the upper side of the feeding hopper 21 and outside the screen plate 22, a discharge port 24 is provided at the lower end of the feeding hopper 21, a first fixed shaft 25 and a second fixed shaft 26 are symmetrically provided at both ends of the discharge port 24, a first sector plate 27 and a second sector plate 28 are rotatably provided on the first fixed shaft 25 and the second fixed shaft 26, a first fixed rod 29 is fixedly provided on the first sector plate 27 and above the first fixed shaft 25, a second fixed rod 210 is fixedly provided on the second sector plate 28 and below the second fixed shaft 26, a connecting arm 211 is connected between the first fixed rod 29 and the second fixed rod 210, and the two ends of the connecting arm 211 are rotatably connected to the first fixed rod 29 and the second fixed rod 210, respectively, and an arc plate 212 is provided on the lower side of the first sector plate 27 and the second sector plate 28, respectively. Rocker arms 213 are fixedly installed on the outer sides of the first sector plate 27 and the second sector plate 28, respectively.
[0031] like Figure 3As shown, a folded edge 214 is fixedly provided on the outer side of the arc plate 212, an L-shaped bent plate 215 is fixedly provided on the inner side of one of the arc plates 212, and a pad 216 opposite to the L-shaped bent plate 215 is provided on the inner side of the other arc plate 212. The L-shaped bent plate 215 extends upward to the inner side of the first sector plate 27 or the second sector plate 28.
[0032] like Figure 4 As shown, the connecting arm 211 includes a double-ended screw 217 with threads at both ends and two connecting blocks 218. The two ends of the double-ended screw 217 are respectively connected to the two connecting blocks 218 by threads, and an adjusting nut 219 is provided at the connection between the double-ended screw 217 and the connecting blocks 218.
[0033] like Figure 2 and 5 As shown, the mixing hopper mechanism 3 includes a mixing hopper 31, a mixing box 32 is fixedly installed at the lower part of the mixing hopper 31, a mixing shaft 33 and a mixing blade 34 are installed inside the mixing box 32, the outer end of the mixing shaft 33 is connected to the mixing motor 35 for transmission, the mixing motor 35 is fixedly installed on the outside of the mixing box 32, and a discharge port 36 is provided at the bottom of the mixing box 32.
[0034] like Figures 1-6As shown, the fixed bracket 1 of this utility model is made of high-strength steel to ensure the stability of the entire device. The feeding hopper 21 is designed in a funnel shape to facilitate the smooth falling of materials. The screen plate 22 is installed on the top of the feeding hopper 21 for preliminary screening of impurities and oversized particles. The screen mesh number can be adjusted or replaced as needed. The outer plate 23 is set around the screen plate 22 to prevent material from splashing out and to facilitate the collection of material on the screen. The discharge port 24 is located at the bottom of the feeding hopper 21, and the material flow rate is controlled by an adjustment mechanism. The first sector plate 27 and the second sector plate 28 are installed on both sides of the discharge port 24 through the first fixed shaft 25 and the second fixed shaft 26. The opening degree of the discharge port 24 can be adjusted by rotation to achieve quantitative feeding. The connecting arm 211 consists of a double-headed screw 217 and two connecting blocks 218. The length of the connecting arm is adjusted by adjusting the nut 219, thereby controlling the opening angle of the first sector plate 27 and the second sector plate 28. The arc-shaped plate 212 is located below the fan-shaped plate and works with it to form a seal, preventing material leakage. The folded edge 214 enhances the sealing performance. In a pair of arc-shaped plates, one has an L-shaped bend and the other has a pad; their interaction further enhances the sealing effect while facilitating adjustment and maintenance. A rocker arm 213 is installed on the outside of the fan-shaped plate, allowing for manual or mechanical rotation. The mixing hopper mechanism 3: The mixing hopper 31 receives the screened material and is designed for easy cleaning, preventing material residue. The mixing box 32 is fixed below the mixing hopper and contains a mixing shaft 33 and mixing blades 34 to ensure thorough mixing of the material. The mixing blades are evenly distributed on the mixing shaft and designed with a reasonable tilt angle to improve mixing efficiency. The mixing motor 35 drives the mixing shaft to rotate; a high-performance motor is used to ensure mixing force and stability. The discharge port 36 is located at the bottom of the mixing box 32, and the discharge speed can be controlled by a valve for convenient subsequent process operations.
[0035] The working process of this utility model:
[0036] Raw material screening: Polypropylene particles or modified ingredients are poured into the screening hopper mechanism 2. The material first passes through the screen plate 22 for preliminary screening to remove impurities and oversized particles.
[0037] Quantitative feeding: By manually or mechanically operating the rocker arm 213, the first sector plate 27 and the second sector plate 28 are rotated, and the opening of the discharge port 24 is adjusted to achieve quantitative feeding into the mixing hopper 31.
[0038] Mixing and stirring: Start the stirring motor 35, and the stirring shaft 33 drives the stirring blades 34 to rotate, so as to mix the materials evenly. The stirring time and speed can be adjusted according to the material characteristics and modification requirements.
[0039] Discharge: After the mixture is evenly mixed, open the discharge port 36 at the bottom of the mixing tank 32, control the discharge speed through the valve, and send the modified polypropylene particles into the next process.
[0040] In conclusion, the above are merely preferred embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A mixing device for modifying polypropylene particles, characterized in that, Includes a fixed bracket (1), on the top of the fixed bracket (1) a screening hopper mechanism (2) is fixedly installed, and a stirring hopper mechanism (3) is provided on the fixed bracket (1) and below the screening hopper mechanism (2); The screening hopper mechanism (2) includes a feeding hopper (21), a screen plate (22) is provided on the upper side of the feeding hopper (21), an outer plate (23) is fixedly provided on the upper side of the feeding hopper (21) and outside the screen plate (22), a discharge port (24) is provided at the lower end of the feeding hopper (21), a first fixed shaft (25) and a second fixed shaft (26) are symmetrically provided at both ends of the discharge port (24), the first fixed shaft (25) and the second fixed shaft (26) are respectively rotatably provided with a first sector plate (27) and a second sector plate (28 ... fixed shaft (28), the first fixed shaft (25) and the second fixed shaft (26) are respectively rotatably provided with a first sector plate (27) and a second fixed shaft (28), the first fixed shaft (25) and the second fixed shaft (26) are respectively rotatably provided with a first sector plate (27) and a second fixed shaft (28), the first fixed shaft (2 A first fixing rod (29) is fixedly installed on a sector plate (27) and above the first fixing shaft (25). A second fixing rod (210) is fixedly installed on a second sector plate (28) and below the second fixing shaft (26). A connecting arm (211) is connected between the first fixing rod (29) and the second fixing rod (210). The two ends of the connecting arm (211) are rotatably connected to the first fixing rod (29) and the second fixing rod (210) respectively. An arc plate (212) is provided on the lower side of the first sector plate (27) and the second sector plate (28) respectively.
2. The mixing device for modifying polypropylene particles according to claim 1, characterized in that: A rocker arm (213) is fixedly installed on the outer side of the first sector plate (27) and the second sector plate (28).
3. The mixing device for modifying polypropylene particles according to claim 1, characterized in that: The outer side of the arc plate (212) is fixedly provided with a folded edge (214), one of the arc plates (212) is fixedly provided with an L-shaped bending plate (215) on the inner side, and the inner side of the other arc plate (212) is provided with a pad (216) opposite to the L-shaped bending plate (215). The L-shaped bending plate (215) extends upward to the inner side of the first sector plate (27) or the second sector plate (28).
4. The mixing device for modifying polypropylene particles according to claim 1, characterized in that: The connecting arm (211) includes a double-ended screw (217) with threads at both ends and two connecting blocks (218). The two ends of the double-ended screw (217) are respectively connected to the two connecting blocks (218) by threads. An adjusting nut (219) is provided at the connection between the double-ended screw (217) and the connecting blocks (218).
5. A mixing apparatus for modifying polypropylene particles according to any one of claims 1-4, characterized in that: The mixing hopper mechanism (3) includes a mixing hopper (31), and a mixing box (32) is fixedly installed at the lower part of the mixing hopper (31). The mixing box (32) is provided with a mixing shaft (33) and a mixing blade (34). The outer end of the mixing shaft (33) is connected to a mixing motor (35) for transmission. The mixing motor (35) is fixedly installed on the outside of the mixing box (32). The bottom of the mixing box (32) is provided with a discharge port (36).