Feeding device of double-screw extruder for producing white master batch with ultrahigh titanium dioxide content
By adopting the collaborative feeding method of the main feeding port and the side feeding port in the twin-screw extruder and combining with the stirring component, the problem of high titanium dioxide content material accumulation is solved, and the production efficiency and product quality are improved.
Patent Information
- Application Number
- CN202422262421.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-14
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-09-14
AI Technical Summary
In the production process of twin-screw extruders, high titanium dioxide content materials are prone to accumulation due to dust and air pressure problems, which affects production efficiency and product quality.
A twin-screw extruder feeding device is designed, adopting a collaborative feeding method between the main feeding port and the two side feeding ports, combining the first and second agitating components to ensure the uniform mixing and shearing effect of the material in the extruder.
Through the design of collaborative feeding and stirring components, material accumulation is reduced, processing speed and raw material utilization are improved, and the uniform transportation of materials and the production of high-quality products are ensured.
Smart Images
Figure CN223030315U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of plastic production. Specifically, it relates to a feeding device for a twin-screw extruder used to produce white masterbatch with a very high titanium dioxide content. Background Art
[0002] During the production process of a twin-screw extruder, the feeding system plays a crucial role. Especially when dealing with materials with a high titanium dioxide content, the feeding process directly affects the production quality and capacity. Usually, during the material aggregation and transportation process, we often encounter the problem of material accumulation. This accumulation phenomenon is particularly obvious in materials containing a high amount of inorganic substances, bringing many challenges to production.
[0003] The main reason for material accumulation lies in the floating dust and air pressure problems during the material feeding process. Specifically, a certain amount of floating dust is generated when the material is fed. These floating dust may cause the air pressure of the material to be unable to be discharged in time during the aggregation process. The accumulation of air pressure makes the material present a floating state, making it unstable and uneven when transported into the twin-screw extruder body. Such a situation not only affects the material transportation speed but also may have a negative impact on the quality of the final product. With the increasing market demand for materials with a high titanium dioxide content, relying solely on the feeding method of the main machine can no longer meet the requirements of production speed and dispersion. The processing of materials with a high titanium dioxide content requires a more precise and efficient feeding system to ensure that the materials can be evenly and quickly transported into the extruder, thus ensuring the production stability and the quality of the final product.
[0004] Therefore, it is necessary to improve the existing feeding system of the twin-screw extruder to meet the production requirements of a very high titanium dioxide content. Through these improvements, the problem of material accumulation can be effectively reduced, and the production efficiency can be improved, thus meeting the market demand for high-quality products. Content of the Utility Model
[0005] In view of this, the utility model provides a feeding device for a twin-screw extruder used to produce white masterbatch with a very high titanium dioxide content, which can reduce material accumulation and accelerate the processing speed.
[0006] The utility model is implemented as follows:
[0007] The utility model provides a feeding device for a twin-screw extruder for producing white masterbatch with ultra-high titanium dioxide content. The feeding device includes a twin-screw extruder body, a main feeding port, side feeding ports, and a first stirring assembly. The main feeding port is arranged on the upper top surface of the twin-screw extruder body. Two side feeding ports are arranged side by side on the side wall of the twin-screw extruder body. A side feeder is arranged at the side feeding port. The side feeder is fixedly connected to the side wall of the twin-screw extruder body. The inside of the side feeder is communicated with the inside of the twin-screw extruder body through the side feeding port. A hopper is fixedly connected to the side feeder. The inside of the hopper is communicated with the inside of the side feeder. Another hopper is arranged at the main feeding port. The hopper arranged at the main feeding port is fixedly connected to the upper top surface of the twin-screw extruder body and is communicated with the inside of the twin-screw extruder body. The twin-screw extruder body is fixedly connected with the first stirring assembly. The first stirring assembly is used for stirring the materials entering the inside of the twin-screw extruder body. The side feeder is used for feeding materials from the side of the twin-screw extruder body.
[0008] The technical effects of the feeding device for a twin-screw extruder for producing white masterbatch with ultra-high titanium dioxide content provided by the utility model are as follows: By setting the main feeding port and two side feeding ports to carry out cooperative feeding at the same time, the mixing process of the materials in the extruder is more uniform. The twin-screw extruder body can make the materials be strongly sheared and mixed in the extruder. The cooperative use can reduce the loss caused by uneven distribution of the materials, improve the utilization rate of raw materials. The cooperative feeding of the main feeding port and the side feeding ports can avoid the accumulation of materials and speed up the processing speed. The side feeder can provide more feeding space and mixing opportunities. Two side feeders can balance the material flow in the twin-screw extruder body and reduce the problem of unstable flow caused by single feeding at the main feeding port. By setting the twin-screw extruder body, it can avoid the floating and accumulation of materials, and can ensure the large-scale, rapid and uniform transportation of materials. The side feeder has a certain length-diameter ratio, which ensures that the materials are evenly mixed and has a partial shearing and mixing effect, effectively improving the dispersion effect of titanium dioxide.
[0009] On the basis of the above technical solution, the feeding device for a twin-screw extruder for producing white masterbatch with ultra-high titanium dioxide content of the utility model can be further improved as follows:
[0010] Wherein, the first stirring assembly includes a first motor and a screw rod. The output end of the first motor is fixedly connected to one end of the screw rod. The first motor is fixedly connected to the outer wall of the twin-screw extruder body. The screw rod penetrates through the outer wall of the twin-screw extruder body and extends into the inside of the twin-screw extruder body. The screw rod is rotatably connected to the twin-screw extruder body.
[0011] Further, the side feeder includes a feeding extruder and a second stirring assembly. The feeding extruder is fixedly connected to the twin-screw extruder body through the side feeding port. The interior of the feeding extruder is in communication with that of the twin-screw extruder body. The second stirring assembly includes a second motor and a stirrer. The second motor is fixedly connected to the outer wall of the feeding extruder. One end of the stirrer is fixedly connected to the output end of the second motor. The stirrer penetrates through the feeding extruder and extends into the interior thereof. The stirrer is rotatably connected to the feeding extruder. A plurality of stirring blades are provided on the stirrer.
[0012] Further, the hopper includes a hopper body, a feeding pipeline, and a first exhaust pipe. The lower bottom surface of the hopper body is fixedly connected to the feeding extruder. The feeding pipeline and the first exhaust pipe are fixedly connected to the upper top surface of the hopper body.
[0013] The beneficial effects of adopting the above improvement scheme are as follows: By providing the first exhaust pipe, the air in the hopper can be discharged, avoiding the floating of materials, which can ensure that the materials will not be stratified or uneven due to the presence of air during the transmission and processing, thereby improving the overall processing quality and efficiency. In addition, the exhaust pipeline can also reduce potential problems caused by gas accumulation, such as material blockage or poor flow.
[0014] Further, the hopper body is of a funnel-shaped structure.
[0015] Further, a heat insulation sheath is provided at the connection between the side feeder and the twin-screw extruder body.
[0016] Further, two second exhaust pipes are fixedly connected to the upper top surface of the twin-screw extruder body. The two second exhaust pipes respectively correspond to the positions where the two side feeders are installed. A filter element is provided inside the second exhaust pipe. One end of the second exhaust pipe is fixedly connected to the twin-screw extruder body. The other end of the second exhaust pipe is sleeved with a stainless steel straight tube. The suction device is connected to the second exhaust pipe through the stainless steel straight tube.
[0017] The beneficial effects of adopting the above improvement scheme are as follows: By providing the second exhaust pipe, the volatile substances generated during the extrusion process can be effectively discharged, making the molding of the materials more uniform, avoiding the floating of materials, and thus improving the physical and mechanical properties of the final product.
[0018] Further, the length-diameter ratio of the side feeder is 12:1 - 16:1.
[0019] The beneficial effects of adopting the above improvement scheme are as follows: A higher length-diameter ratio ensures sufficient mixing of materials in the side feeder, thereby improving the uniform dispersion of titanium dioxide. The length-diameter ratio design provides a longer mixing channel, enabling more thorough dispersion of titanium dioxide in the material flow and reducing the agglomeration phenomenon. The increased shearing effect helps break up the aggregates of titanium dioxide, promotes better dispersion, and enhances the smoothness and uniformity of the final product.
[0020] Further, a cooling water channel is provided on the side wall of the feeding extruder.
[0021] The beneficial effects of adopting the above improvement scheme are as follows: By setting up the cold water pipeline, the temperature of the side feeder can be maintained, preventing local overheating and avoiding premature melting of the materials during the feeding process.
[0022] Further, the heat insulation sheath is made of silica gel.
[0023] Compared with the prior art, the beneficial effects of a twin-screw extruder feeding device for producing white masterbatch with ultra-high titanium dioxide content provided by the present utility model are as follows: By setting up the main feeding port and two side feeding ports for collaborative feeding, the mixing process of materials in the extruder is more uniform. The twin-screw extruder body can subject the materials to strong shearing and mixing. The collaborative use can reduce the losses caused by uneven distribution of materials, improve the utilization rate of raw materials, and the collaborative feeding of the main feeding port and the side feeding ports can avoid the accumulation of materials and accelerate the processing speed. The side feeder can provide more feeding space and mixing opportunities; the two side feeders can balance the material flow in the twin-screw extruder body and reduce the flow instability problem caused by single feeding at the main feeding port. By setting up the twin-screw extruder body, the virtual floating and accumulation of materials can be avoided, ensuring a large amount, rapid, and uniform transportation of materials. The side feeder has a certain length-diameter ratio, ensuring uniform mixing of materials and having a partial shearing and kneading effect, effectively improving the dispersion effect of titanium dioxide. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments of the present utility model will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0025] Figure 1 It is a schematic structural diagram of a twin-screw extruder feeding device for producing white masterbatch with ultra-high titanium dioxide content;
[0026] Figure 2 It is a schematic internal structural diagram of the twin-screw extruder body of a twin-screw extruder feeding device for producing white masterbatch with ultra-high titanium dioxide content;
[0027] Figure 3 Front view of the twin-screw extruder body of a feeding device for a twin-screw extruder for producing white masterbatch with ultra-high titanium dioxide content;
[0028] Figure 4 Top view of the twin-screw extruder body of a feeding device for a twin-screw extruder for producing white masterbatch with ultra-high titanium dioxide content;
[0029] Figure 5 Cross-sectional view of the side feeder of a feeding device for a twin-screw extruder for producing white masterbatch with ultra-high titanium dioxide content;
[0030] In the attached drawings, the list of components represented by each reference numeral is as follows:
[0031] 10. Twin-screw extruder body; 11. Main feeding port; 12. Side feeding port; 13. First stirring assembly; 131. First motor; 132. Screw; 14. Side feeder; 141. Feeding extruder; 142. Second stirring assembly; 1421. Second motor; 1422. Stirrer; 15. Hopper; 151. Hopper body; 152. Feed pipe; 153. First exhaust pipe; 16. Heat insulation sheath; 17. Second exhaust pipe. Detailed implementation mode
[0032] To make the purpose, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model.
[0033] Such as Figures 1-5As shown in the figure, it is an embodiment of a feeding device for a twin-screw extruder for producing white masterbatch with a super-high titanium dioxide content provided by the present utility model. In this embodiment, it includes a twin-screw extruder body 10, a main feeding port 11, a side feeding port 12 and a first stirring assembly 13. The main feeding port 11 is arranged on the upper top surface of the twin-screw extruder body 10. Two side feeding ports 12 are arranged in parallel on the side wall of the twin-screw extruder body 10. A side feeder 14 is arranged at the side feeding port 12. The side feeder 14 is fixedly connected to the side wall of the twin-screw extruder body 10. The inside of the side feeder 14 is connected to the inside of the twin-screw extruder body 10 through the side feeding port 12. A hopper 15 is fixedly connected to the side feeder 14. The inside of the hopper 15 is connected to the inside of the side feeder 14. Another hopper 15 is arranged at the main feeding port 11. The hopper 15 arranged at the main feeding port 11 is fixedly connected to the upper top surface of the twin-screw extruder body 10 and is connected to the inside of the twin-screw extruder body 10. A first stirring assembly 13 is fixedly connected to the twin-screw extruder body 10. The first stirring assembly 13 is used for stirring the materials entering the inside of the twin-screw extruder body 10. The side feeder 14 is used for feeding materials from the side of the twin-screw extruder body 10.
[0034] Among them, in the above technical solution, the first stirring assembly 13 includes a first motor 131 and a screw 132. The output end of the first motor 131 is fixedly connected to one end of the screw 132. The first motor 131 is fixedly connected to the outer wall of the twin-screw extruder body 10. The screw 132 penetrates through the outer wall of the twin-screw extruder body 10 and extends into the inside of the twin-screw extruder body 10. The screw 132 is rotatably connected to the twin-screw extruder body 10.
[0035] Further, in the above technical solution, the side feeder 14 includes a feeding extruder 141 and a second stirring assembly 142. The feeding extruder 141 is fixedly connected to the twin-screw extruder body 10 through the side feeding port 12. The feeding extruder 141 is connected to the inside of the twin-screw extruder body 10. The second stirring assembly 142 includes a second motor 1421 and a stirrer 1422. The second motor 1421 is fixedly connected to the outer wall of the feeding extruder 141. One end of the stirrer 1422 is fixedly connected to the output end of the second motor 1421. The stirrer 1422 penetrates through the feeding extruder 141 and extends into the inside of the feeding extruder 141. The stirrer 1422 is rotatably connected to the feeding extruder 141. A plurality of stirring blades are arranged on the stirrer 1422.
[0036] Further, in the above technical solution, the hopper 15 includes a hopper body 151, a feeding pipeline 152 and a first exhaust pipe 153. The lower bottom surface of the hopper body 151 is fixedly connected to the feeding extruder 141. The feeding pipeline 152 and the first exhaust pipe 153 are fixedly connected to the upper top surface of the hopper body 151.
[0037] A loss-in-weight scale is connected above the hopper.
[0038] Further, in the above technical solution, the hopper body 151 is of a funnel-shaped structure.
[0039] Further, in the above technical solution, a heat insulation sheath 16 is provided at the connection between the side feeder 14 and the twin-screw extruder body 10.
[0040] Further, in the above technical solution, two second exhaust pipes 17 are fixedly connected to the upper top surface of the twin-screw extruder body 10. The two second exhaust pipes 17 respectively correspond to the positions where the two side feeders 14 are installed. A filter element is provided inside the second exhaust pipe 17. One end of the second exhaust pipe 17 is fixedly connected to the twin-screw extruder body 10, and the other end of the second exhaust pipe 17 is sleeved with a stainless steel straight tube. The suction device is connected to the second exhaust pipe 17 through the stainless steel straight tube.
[0041] The filter element can be filter gauze.
[0042] Further, in the above technical solution, the length-diameter ratio of the side feeder 14 is 12:1 - 16:1.
[0043] Further, in the above technical solution, a cooling water channel is provided on the side wall of the feeding extruder 141.
[0044] Further, in the above technical solution, the heat insulation sheath 16 is made of silica gel.
[0045] During use, a part of the material directly enters the twin-screw extruder body 10 from the hopper 15 connected to the main feeding port 11, and another part of the material enters the interior of the feeding extruder 141 through the hopper 15 connected to the side feeder 14. The second stirring assembly 142 stirs the material inside the side feeder 14 and squeezes it into the twin-screw extruder body 10. During this process, cold water continuously circulates in the cooling water pipe to take away the heat on the surface of the side feeder 14. The material entering the twin-screw extruder body 10 is stirred and transported by the screw 132. The double-side feeding method is beneficial to improving the material supply efficiency. The appropriate length-diameter ratio of the side feeding screw improves the material dispersion, and at the same time, water is passed to solve the problem of the screw being wrapped with material, avoiding the feeding blockage caused by the material wrapping the screw.
[0046] When the material enters the hopper body 151 along the feeding pipe 152, the suction device connected to the first exhaust pipe 153 starts to work, sucking the gas out of the first exhaust pipe 153. The floating material will not be sucked out due to the blockage of the filter element.
[0047] Specifically, the principle of the present utility model is as follows: during use, a part of the material directly enters the twin-screw extruder body 10 from the hopper 15 connected to the main feeding port 11, and another part of the material enters the interior of the feeding extruder 141 through the hopper 15 connected to the side feeder 14. The second stirring assembly 142 stirs the material inside the side feeder 14 and squeezes it into the twin-screw extruder body 10. During this process, cold water continuously circulates in the cooling water pipe to take away the heat on the surface of the side feeder 14, and the material entering the twin-screw extruder body 10 is stirred and transported by the screw 132. The feeding method of double-sided feeding is beneficial to improving the material supply efficiency. The appropriate long-diameter ratio of the side feeding screw improves the material dispersion, and at the same time, water is passed to solve the problem of the screw being wrapped by the material, avoiding the poor feeding caused by the material wrapping the screw.
Claims
1. A twin-screw extruder feeding device for producing white masterbatch with ultra-high titanium dioxide content, characterized in that: The invention comprises a twin-screw extruder body (10), a main feed port (11), a side feed port (12) and a first stirring assembly (13), wherein the main feed port (11) is arranged on the upper top surface of the twin-screw extruder body (10), two side feed ports (12) are arranged in parallel on the side wall of the twin-screw extruder body (10), a side feeder (14) is arranged at the side feed port (12), the side feeder (14) is fixedly connected to the side wall of the twin-screw extruder body (10), the interior of the side feeder (14) is connected to the interior of the twin-screw extruder body (10) through the side feed port (12), and a hopper (14) is fixedly connected to the side feeder (14). 5), the interior of the hopper (15) is connected to the interior of the side feeder (14), another hopper (15) is arranged at the main feeding port (11), the hopper (15) arranged at the main feeding port (11) is fixedly connected to the upper top surface of the twin-screw extruder body (10) and is connected to the interior of the twin-screw extruder body (10), the first stirring component (13) is fixedly connected to the twin-screw extruder body (10), the first stirring component (13) is used to stir the material entering the interior of the twin-screw extruder body (10), and the side feeder (14) is used to feed from the side of the twin-screw extruder body (10).
2. A twin-screw extruder feeding device for producing white masterbatch with ultra-high titanium dioxide content according to claim 1, characterized in that: The first stirring assembly (13) comprises a first motor (131) and a screw (132), wherein the output end of the first motor (131) is fixedly connected to one end of the screw (132), the first motor (131) is fixedly connected to the outer wall of the twin-screw extruder body (10), the screw (132) penetrates the outer wall of the twin-screw extruder body (10) and extends to the interior of the twin-screw extruder body (10), and the screw (132) is rotationally connected to the twin-screw extruder body (10).
3. A twin-screw extruder feeding device for producing white masterbatch with ultra-high titanium dioxide content according to claim 2, characterized in that: The side feeder (14) comprises a feeding extruder (141) and a second stirring component (142); the feeding extruder (141) is fixedly connected to the twin-screw extruder body (10) via the side feeding port (12); the feeding extruder (141) is communicated with the interior of the twin-screw extruder body (10); the second stirring component (142) comprises a second motor (1421) and a stirrer (1422); the second motor (1421) is fixedly connected to the outer wall of the feeding extruder (141); one end of the stirrer (1422) is fixedly connected to the output end of the second motor (1421); the stirrer (1422) passes through the feeding extruder (141) and extends to the interior of the feeding extruder (141); the stirrer (1422) is rotatably connected to the feeding extruder (141); and a plurality of stirring blades are provided on the stirrer (1422).
4. A twin-screw extruder feeding device for producing white masterbatch with ultra-high titanium dioxide content according to claim 3, characterized in that: The hopper (15) comprises a hopper body (151), a feed pipe (152) and a first exhaust pipe (153); the lower bottom surface of the hopper body (151) is fixedly connected to the feeding extruder (141), and the feed pipe (152) and the first exhaust pipe (153) are fixedly connected to the upper top surface of the hopper body (151).
5. A twin-screw extruder feeding device for producing white masterbatch with ultra-high titanium dioxide content according to claim 4, characterized in that: The hopper body (151) is a funnel-shaped structure.
6. A twin-screw extruder feeding device for producing white masterbatch with ultra-high titanium dioxide content according to claim 5, characterized in that: A heat insulating jacket (16) is provided at the connection between the side feeder (14) and the twin-screw extruder body (10).
7. A twin-screw extruder feeding device for producing white masterbatch with ultra-high titanium dioxide content according to claim 6, characterized in that: Two second exhaust pipes (17) are fixedly connected to the upper top surface of the twin-screw extruder body (10), and the two second exhaust pipes (17) correspond to the installation positions of the two side feeders (14) respectively. A filter is arranged inside the second exhaust pipe (17), and one end of the second exhaust pipe (17) is fixedly connected to the twin-screw extruder body (10), and the other end of the second exhaust pipe (17) is sleeved with a stainless steel straight cylinder, and an air suction device is connected to the second exhaust pipe (17) through the stainless steel straight cylinder.
8. A twin-screw extruder feeding device for producing white masterbatch with ultra-high titanium dioxide content according to claim 7, characterized in that: The side feeder (14) has a length-to-diameter ratio of 12:1-16:
1.
9. A twin-screw extruder feeding device for producing white masterbatch with ultra-high titanium dioxide content according to claim 8, characterized in that: A cooling water channel is provided on the side wall of the feeding extruder (141).
10. A twin-screw extruder feeding device for producing white masterbatch with ultra-high titanium dioxide content according to claim 9, characterized in that: The heat-insulating jacket (16) is made of silica gel.