Engineering plastic molecular chain double-bond stabilizing device
By designing intelligent mixing and pretreatment components, the runaway problem of double bond modification process in existing equipment has been solved, achieving high-precision mixing and temperature control, reducing energy consumption and defect rate, and improving environmental performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-15
- Publication Date
- 2026-04-14
AI Technical Summary
Existing double bond stabilization devices for engineering plastic molecular chains suffer from uncontrolled processes in terms of proportioning accuracy, raw material drying, and reaction efficiency due to manual feeding, lack of pretreatment, and crude temperature control. This results in high product defect rates, high energy consumption, and failure to meet environmental standards.
The system employs intelligent mixing and pretreatment components, including a mixing tank, stirring blades, a spiral heating oil chamber, and an electromagnetic heater. The stirring blades mix double-bonded materials with plastic particles, while the spiral chamber inside the hollow sleeve circulates and heats the oil to ensure stable temperature. A flow meter monitors the flow rate, and the electromagnetic heater controls the temperature in stages to achieve precise mixing and pre-reaction, thus preventing double bond breakage during the subsequent hot-melting stage.
This improved the proportioning accuracy and reaction efficiency of the double bond modification process, reduced the product defect rate and energy consumption, and met environmental protection requirements.
Smart Images
Figure CN224116663U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of double bond stabilization technology in plastics, specifically a device for stabilizing double bonds in engineering plastic molecular chains. Background Technology
[0002] The stability of double bonds in the molecular chain of engineering plastics is crucial to their properties (such as heat resistance, oxidation resistance, mechanical strength, etc.).
[0003] Existing double bond stabilization devices for engineering plastic molecular chains suffer from three major defects in actual use: manual feeding, lack of pretreatment, and crude temperature control. These defects lead to a complete loss of control over the double bond modification process in terms of proportioning accuracy, raw material drying, and reaction efficiency, directly causing problems such as high product defect rate, high energy consumption, and failure to meet environmental protection standards. Utility Model Content
[0004] This invention provides a device for stabilizing double bonds in engineering plastic molecular chains. It has the advantages of intelligent mixing and pretreatment to improve stability. This solves the three major defects of existing double bond stabilizing devices in engineering plastic molecular chains during actual use: manual feeding, lack of pretreatment, and rough temperature control. These defects lead to a complete loss of control over the double bond modification process in terms of proportioning accuracy, raw material drying, and reaction efficiency, directly causing problems such as high product defect rate, high energy consumption, and failure to meet environmental protection standards.
[0005] To achieve intelligent mixing and improved stability through pretreatment, this utility model provides the following technical solution: a double bond stabilizing device for engineering plastic molecular chains, comprising a support frame, a transmission box mounted on the top surface of the support frame, an extrusion screw mounted at one end of the transmission box, an electromagnetic heater disposed on the outer surface of the extrusion screw, and a pretreatment assembly disposed on the upper part of the extrusion screw, wherein:
[0006] The pretreatment component includes a support frame and a hollow sleeve. The inner wall of the support frame is equipped with a feed inlet, and the top surface of the feed inlet is equipped with a mixing tank. The inner wall of the mixing tank is rotatably connected with mixing blades, and the top surface of the mixing tank is equipped with a double bond material tube and a plastic particle tube.
[0007] The hollow sleeve is installed on the outer surface of the mixing tank, and the inner wall of the hollow sleeve is provided with a spiral cavity. The inner wall of the spiral cavity is connected to an input pipe and an output pipe.
[0008] As a preferred embodiment of this utility model, a hot melt chamber is installed on the outer surface of the extrusion screw, the inner wall of the hot melt chamber is in movable and rotatable contact with the outer surface of the extrusion screw, a controller is provided on one side of the support frame, an exhaust pipe is installed on one side of the mixing tank, a feed pipe is installed on the top surface of the mixing tank, and a flow meter is installed in the middle of the double bond material pipe and the plastic granule pipe.
[0009] As a preferred technical solution of this utility model, the top surface of the support frame is fixedly connected to the bottom surface of the transmission box, one end of the extrusion screw is fixedly connected to the output end of the transmission box, the hot melt cavity is disposed between the extrusion screw and the electromagnetic heater, six electromagnetic heaters are equidistantly installed on the outer surface of the hot melt cavity, the electromagnetic heaters are electrically connected to the controller, and the transmission box is electrically connected to the controller.
[0010] As a preferred embodiment of this utility model, the bottom surface of the support frame is fixedly connected to the top surface of the support frame, the bottom end of the feed inlet is fixedly connected to the inner wall of one end of the hot melt cavity, the inner wall of the feed inlet is in communication with the inner wall of the hot melt cavity, the top surface of the feed inlet is fixedly connected to the bottom surface of the mixing tank, and the inner wall of the mixing tank is movably and rotatably connected to the outer surface of the mixing blade.
[0011] As a preferred embodiment of this utility model, the top end of the stirring blade is fixedly connected to the output end of the motor, the bottom surface of the motor is fixedly connected to the top surface of the stirring tank, the motor and the controller are electrically connected to each other, the outer surface of the stirring tank is fixedly connected to the inner wall of the hollow sleeve, the spiral cavity is used to spirally arrange the heating oil, the input pipe is set on the upper inner wall of the hollow sleeve, and the inner wall of the input pipe is in communication with the inner wall of the hollow sleeve.
[0012] In a preferred embodiment of this utility model, the input pipe is used to connect to heating oil, the output pipe is located at the lower part of the hollow sleeve, the inner wall of the output pipe is in communication with the inner wall of the hollow sleeve, one side of the upper part of the mixing tank is fixedly connected to one end of the output pipe, the inner wall of the exhaust pipe is in communication with the inner wall of the mixing tank, the top surface of the mixing tank is fixedly connected to the bottom surface of the feed pipe, and the inner wall of the mixing tank is in communication with the inner wall of the feed pipe.
[0013] As a preferred embodiment of this utility model, the top end of the feed pipe is fixedly connected to the bottom end of the double bond material pipe and the plastic granule pipe. The inner wall of the double bond material pipe is in communication with the inner wall of the feed pipe, and the inner wall of the plastic granule pipe is in communication with the inner wall of the feed pipe. The flow meter is used to monitor the flow rate of the closed double bond material pipe and the plastic granule pipe. The flow meter and the controller are electrically connected to each other.
[0014] Compared with the prior art, this utility model provides a device for stabilizing double bonds in engineering plastic molecular chains, which has the following beneficial effects:
[0015] This engineering plastic molecular chain double bond stabilization device utilizes the synergistic effect of a spiral heating oil chamber and stirring blades within a mixing tank to pre-react the double bond material with plastic particles under heating in a hollow sleeve, reducing the risk of double bond breakage during the subsequent high-temperature melting stage. Furthermore, precise mixing is achieved through controlled feeding and mixing via Zhi'engge technology, further enhancing the accuracy of the plastic molecular chain double bond stabilization process. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the external structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the external structure of this utility model from another angle;
[0018] Figure 3 This is a schematic diagram of the internal structure of the pretreatment component of this utility model;
[0019] Figure 4 This is a schematic diagram of the internal structure of the pretreatment component of this utility model from another angle;
[0020] Figure 5 This utility model provides Figure 4 Enlarged schematic diagram of part A in the middle.
[0021] In the diagram: 1. Mounting plate; 10. Transmission box; 11. Extrusion screw; 12. Electromagnetic heater; 13. Hot melt chamber; 2. Pretreatment assembly; 20. Controller; 210. Support frame; 211. Feed inlet; 212. Mixing tank; 213. Mixing blades; 214. Motor; 220. Hollow sleeve; 221. Spiral cavity; 222. Input pipe; 223. Output pipe; 224. Exhaust pipe; 225. Feed pipe; 226. Double bond material pipe; 227. Plastic granule pipe; 228. Flow meter. Detailed Implementation
[0022] 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. Example 1
[0023] Please see Figures 1-2 This utility model discloses a double bond stabilizing device for engineering plastic molecular chains, including a mounting plate 1, a transmission box 10 mounted on the top surface of the mounting plate 1, an extrusion screw 11 mounted on one end of the transmission box 10, an electromagnetic heater 12 disposed on the outer surface of the extrusion screw 11, and a pretreatment assembly 2 disposed on the upper part of the extrusion screw 11, wherein:
[0024] The pretreatment component 2 includes a support frame 210 and a hollow sleeve 220. The inner wall of the support frame 210 is equipped with a feed inlet 211. The top surface of the feed inlet 211 is equipped with a mixing tank 212. The inner wall of the mixing tank 212 is rotatably connected with a stirring blade 213. The top surface of the mixing tank 212 is equipped with a double bond material tube 226 and a plastic particle tube 227.
[0025] Hollow sleeve 220 is installed on the outer surface of mixing tank 212. The inner wall of hollow sleeve 220 is provided with spiral cavity 221. The inner wall of spiral cavity 221 is connected to input pipe 222 and output pipe 223.
[0026] A hot melt chamber 13 is installed on the outer surface of the extrusion screw 11. The inner wall of the hot melt chamber 13 is in movable and rotating contact with the outer surface of the extrusion screw 11. A controller 20 is provided on one side of the mounting plate 1. An exhaust pipe 224 is installed on one side of the mixing tank 212. A feed pipe 225 is installed on the top surface of the mixing tank 212. A flow meter 228 is installed in the middle of the double bond material pipe 226 and the plastic granule pipe 227.
[0027] The top surface of the mounting plate 1 is fixedly connected to the bottom surface of the transmission box 10. One end of the extrusion screw 11 is fixedly connected to the output end of the transmission box 10. The hot melt cavity 13 is located between the extrusion screw 11 and the electromagnetic heater 12. Six electromagnetic heaters 12 are installed at equal intervals on the outer surface of the hot melt cavity 13. The electromagnetic heaters 12 are electrically connected to the controller 20. The transmission box 10 is electrically connected to the controller 20.
[0028] Double bond stabilizers, such as antioxidants and crosslinking agents, are simultaneously injected into the mixing tank 212 through the double bond material tube 226 and the plastic matrix particles through the plastic particle tube 227. A flow meter 228 monitors the mixing ratio in real time and sends feedback to the controller 20 to ensure precise mixing. A motor 214 drives the stirring blades 213 to rotate, thoroughly mixing the double bond material and plastic particles. Simultaneously, heated oil is circulated through the spiral cavity 221 within the hollow sleeve 220 via the input pipe 222, maintaining a stable temperature (e.g., 80-120℃) within the mixing tank 212. This promotes the pre-reaction of the double bond material with the particle surface, forming a preliminary stable layer. Volatile substances generated during stirring, such as moisture and low-molecular-weight impurities, are discharged through the exhaust pipe 224 to prevent bubble formation or degradation during the subsequent hot-melt stage. Example 2
[0029] Based on the above embodiment 1, please refer to Figures 3-5The bottom surface of the support frame 210 is fixedly connected to the top surface of the mounting plate 1. The bottom end of the feed inlet 211 is fixedly connected to the inner wall of one end of the hot melt cavity 13. The inner wall of the feed inlet 211 is in communication with the inner wall of the hot melt cavity 13. The top surface of the feed inlet 211 is fixedly connected to the bottom surface of the mixing tank 212. The inner wall of the mixing tank 212 is movably and rotatably connected to the outer surface of the mixing blade 213.
[0030] The top of the stirring blade 213 is fixedly connected to the output end of the motor 214. The bottom surface of the motor 214 is fixedly connected to the top surface of the mixing tank 212. The motor 214 and the controller 20 are electrically connected to each other. The outer surface of the mixing tank 212 is fixedly connected to the inner wall of the hollow sleeve 220. The spiral cavity 221 is used to spirally arrange the heating oil. The input pipe 222 is set on the upper inner wall of the hollow sleeve 220. The inner wall of the input pipe 222 is connected to the inner wall of the hollow sleeve 220.
[0031] The inlet pipe 222 is used to connect to the heating oil, and the outlet pipe 223 is located at the lower part of the hollow sleeve 220. The inner wall of the outlet pipe 223 is connected to the inner wall of the hollow sleeve 220. The upper side of the mixing tank 212 is fixedly connected to one end of the outlet pipe 223. The inner wall of the exhaust pipe 224 is connected to the inner wall of the mixing tank 212. The top surface of the mixing tank 212 is fixedly connected to the bottom surface of the feed pipe 225. The inner wall of the mixing tank 212 is connected to the inner wall of the feed pipe 225.
[0032] The top end of the feed pipe 225 is fixedly connected to the bottom end of the double bond material pipe 226 and the plastic granule pipe 227. The inner wall of the double bond material pipe 226 is in communication with the inner wall of the feed pipe 225, and the inner wall of the plastic granule pipe 227 is in communication with the inner wall of the feed pipe 225. The flow meter 228 is used to monitor the flow rate of the closed double bond material pipe 226 and the plastic granule pipe 227. The flow meter 228 is electrically connected to the controller 20.
[0033] The pretreated mixture enters the hot melt chamber 13 through the feed inlet 211. At this time, the controller 20 activates the electromagnetic heater 12 to provide gradient heating to the extrusion screw 11 and the hot melt chamber 13. Under the action of screw shearing and high temperature, the double bond material undergoes cross-linking or addition reactions with the active double bonds in the plastic molecular chain to form a stable structure. The electromagnetic heater 12 controls the temperature in segments, such as lower at the front end and higher at the end of the screw, to optimize reaction kinetics and avoid thermal degradation.
[0034] The working principle and usage process of this utility model are as follows: Double bond stabilizers such as antioxidants and crosslinking agents are simultaneously injected into the mixing tank 212 through the double bond material tube 226 and plastic matrix particles through the plastic particle tube 227. The flow meter 228 monitors the ratio of the two in real time and feeds it back to the controller 20 to ensure precise mixing.
[0035] Stirring and homogenization: Motor 214 drives stirring blades 213 to rotate, thoroughly mixing the double bond material with plastic granules. Simultaneously, heating oil is circulated into the spiral cavity 221 within the hollow sleeve 220 through the input pipe 222, maintaining a stable temperature within the stirring tank 212 (e.g., 80-120℃), promoting pre-reaction between the double bond material and the granule surface, and forming a preliminary stable layer. Volatile substances generated during stirring, such as moisture and low molecular weight impurities, are discharged through the exhaust pipe 224 to prevent the formation of bubbles or degradation during the subsequent hot-melting stage.
[0036] Premixed material conveying: The pretreated mixture enters the hot melt chamber 13 through the feed port 211. At this time, the controller 20 starts the electromagnetic heater 12 to perform gradient heating on the extrusion screw 11 and the hot melt chamber 13.
[0037] Under the shearing and high-temperature action of the screw, the double-bonded material undergoes cross-linking or addition reactions with the active double bonds in the plastic molecular chain, forming a stable structure. The 12-segment temperature control of the electromagnetic heater, with a lower temperature at the front end and a higher temperature at the back, optimizes the reaction kinetics and avoids thermal degradation.
[0038] Continuous extrusion molding: The stabilized melt is formed by the die at the end of the extrusion screw 11. The controller 20 dynamically adjusts the screw speed and heating power according to the data of the flow meter 228 to ensure product consistency.
Claims
1. A double bond stabilizing device for engineering plastic molecular chains, comprising a mounting plate (1), a transmission box (10) mounted on the top surface of the mounting plate (1), an extrusion screw (11) mounted at one end of the transmission box (10), and an electromagnetic heater (12) disposed on the outer surface of the extrusion screw (11), characterized in that: The upper part of the extrusion screw (11) is provided with a pretreatment component (2), wherein: The pretreatment component (2) includes a support frame (210) and a hollow sleeve (220). The inner wall of the support frame (210) is equipped with a feed inlet (211). The top surface of the feed inlet (211) is equipped with a mixing tank (212). The inner wall of the mixing tank (212) is rotatably connected with a stirring blade (213). The top surface of the mixing tank (212) is equipped with a double bond material tube (226) and a plastic particle tube (227). The hollow sleeve (220) is installed on the outer surface of the mixing tank (212). The inner wall of the hollow sleeve (220) is provided with a spiral cavity (221). The inner wall of the spiral cavity (221) is connected to an input pipe (222) and an output pipe (223).
2. The double bond stabilizing device for engineering plastic molecular chains according to claim 1, characterized in that: A hot melt chamber (13) is installed on the outer surface of the extrusion screw (11). The inner wall of the hot melt chamber (13) and the outer surface of the extrusion screw (11) are in movable and rotating contact with each other. A controller (20) is provided on one side of the mounting plate (1). An exhaust pipe (224) is installed on one side of the mixing tank (212). A feed pipe (225) is installed on the top surface of the mixing tank (212). A flow meter (228) is installed in the middle of the double bond material pipe (226) and the plastic granule pipe (227).
3. The double bond stabilizing device for engineering plastic molecular chains according to claim 2, characterized in that: The top surface of the mounting plate (1) is fixedly connected to the bottom surface of the transmission box (10). One end of the extrusion screw (11) is fixedly connected to the output end of the transmission box (10). The hot melt cavity (13) is located between the extrusion screw (11) and the electromagnetic heater (12). Six electromagnetic heaters (12) are installed at equal intervals on the outer surface of the hot melt cavity (13). The electromagnetic heaters (12) are electrically connected to the controller (20). The transmission box (10) is electrically connected to the controller (20).
4. The double bond stabilizing device for engineering plastic molecular chains according to claim 2, characterized in that: The bottom surface of the support frame (210) is fixedly connected to the top surface of the mounting plate (1). The bottom end of the feed inlet (211) is fixedly connected to the inner wall of one end of the hot melt cavity (13). The inner wall of the feed inlet (211) is in communication with the inner wall of the hot melt cavity (13). The top surface of the feed inlet (211) is fixedly connected to the bottom surface of the mixing tank (212). The inner wall of the mixing tank (212) is movably and rotatably connected to the outer surface of the mixing blade (213).
5. The double bond stabilizing device for engineering plastic molecular chains according to claim 1, characterized in that: The top of the stirring blade (213) is fixedly connected to the output end of the motor (214), the bottom surface of the motor (214) is fixedly connected to the top surface of the stirring tank (212), the motor (214) is electrically connected to the controller (20), the outer surface of the stirring tank (212) is fixedly connected to the inner wall of the hollow sleeve (220), the spiral cavity (221) is used to spirally arrange the heating oil, the input pipe (222) is set on the upper inner wall of the hollow sleeve (220), and the inner wall of the input pipe (222) is in communication with the inner wall of the hollow sleeve (220).
6. The double bond stabilizing device for engineering plastic molecular chains according to claim 2, characterized in that: The input pipe (222) is used to connect to heating oil. The output pipe (223) is located at the lower part of the hollow sleeve (220). The inner wall of the output pipe (223) is in communication with the inner wall of the hollow sleeve (220). The upper side of the mixing tank (212) is fixedly connected to one end of the output pipe (223). The inner wall of the exhaust pipe (224) is in communication with the inner wall of the mixing tank (212). The top surface of the mixing tank (212) is fixedly connected to the bottom surface of the feed pipe (225). The inner wall of the mixing tank (212) is in communication with the inner wall of the feed pipe (225).
7. The double bond stabilizing device for engineering plastic molecular chains according to claim 6, characterized in that: The top end of the feed pipe (225) is fixedly connected to the bottom end of the double bond material pipe (226) and the plastic granule pipe (227). The inner wall of the double bond material pipe (226) is in communication with the inner wall of the feed pipe (225). The inner wall of the plastic granule pipe (227) is in communication with the inner wall of the feed pipe (225). The flow meter (228) is used to monitor the flow rate of the closed double bond material pipe (226) and the plastic granule pipe (227). The flow meter (228) is electrically connected to the controller (20).