A mixing apparatus for polyphenylene sulfide production

Abstract

The utility model relates to the technical field of polyphenyl sulfide production, and disclose a kind of mixing equipment for polyphenyl sulfide production, including jar body, the inner wall of jar body is provided with cavity, heating mechanism is provided on the jar body, the heating mechanism includes electromagnetic induction coil, magnetic metal core, the electromagnetic induction coil is arranged in the cavity of jar body, the magnetic metal core is arranged inside jar body, spiral groove is opened in the outer wall of the magnetic metal core, high-permeability alloy spiral strip is provided on the inner wall of spiral groove.The utility model is heated to the raw material periphery inside jar body by heating ring, simultaneously, electromagnetic induction coil and rotating magnetic metal core are used in cooperation, heat is generated inside stirring rod and stirring blade, the inside and outside of raw material are heated simultaneously, ensure that polyphenyl sulfide raw material is heated evenly, promote melting fully, viscosity is consistent.

Description

Technical Field

[0001] This utility model relates to the field of polyphenylene sulfide production technology, specifically to a mixing device for polyphenylene sulfide production. Background Technology

[0002] Polyphenylene sulfide (PPS) is a high-performance thermoplastic resin with excellent comprehensive properties. It exhibits outstanding high-temperature resistance, strong chemical stability, high mechanical strength, excellent rigidity and impact resistance, as well as good electrical insulation and flame retardancy. PPS is widely used in electronics, automotive manufacturing, machinery, and chemical industries, often for making high-temperature and corrosion-resistant parts. In the production process of PPS, raw material mixing and heating are critical steps affecting product quality. As a high-performance crystalline polymer, the raw materials of PPS (such as powdered or granular PPS and various additives) need to be melted and thoroughly mixed at high temperatures to ensure uniform molecular weight distribution and stable performance during subsequent processing.

[0003] Traditional mixing equipment typically uses a single heating method, with a heating ring set around the tank to heat the inside of the tank. However, this only heats the outer part of the raw material, which can easily lead to temperature differences between the inside and outside of the raw material, resulting in uneven heating. This, in turn, causes insufficient melting, large viscosity differences, increased stirring resistance, and affects the mixing effect. Therefore, a mixing equipment for the production of polyphenylene sulfide is proposed to solve the above-mentioned problems. Utility Model Content

[0004] The purpose of this invention is to provide a mixing device for the production of polyphenylene sulfide, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: a mixing device for the production of polyphenylene sulfide, comprising a tank, the inner wall of which is provided with a cavity, a heating mechanism provided on the tank, the heating mechanism comprising an electromagnetic induction coil and a magnetic metal core, the electromagnetic induction coil being disposed in the cavity of the tank, the magnetic metal core being disposed inside the tank, the outer wall of the magnetic metal core being provided with a spiral groove, and the inner wall of the spiral groove being provided with a high permeability alloy spiral strip.

[0006] Preferably, the heating mechanism further includes a heating ring installed in the cavity of the tank, the heating ring and the electromagnetic induction coil are alternately arranged in the cavity of the tank, and a ceramic heat insulation plate is provided between the heating ring and the electromagnetic induction coil.

[0007] Preferably, a motor is installed on the top of the tank, and a stirring rod is installed on the output end of the motor through a shock-absorbing coupling. The magnetic metal core is installed inside the stirring rod, and stirring blades are provided on the side of the stirring rod.

[0008] Preferably, a heat-conducting plate is fixedly connected to the outer wall of the magnetic metal core, and the heat-conducting plate extends into the interior of the stirring blade.

[0009] Preferably, the tank is provided with an auxiliary mechanism, which includes a bidirectional air pump and a connecting pipe. The bidirectional air pump is installed on the top of the tank, one end of the connecting pipe is connected to the output end of the bidirectional air pump, and the other end of the connecting pipe is connected to the stirring rod through a rotary joint.

[0010] Preferably, a conical airbag is connected to the stirring blade, and the conical airbag is disposed on both sides of the stirring blade.

[0011] The present invention adopts the above technical solution, which can bring the following beneficial effects: 1. This mixing equipment for the production of polyphenylene sulfide (PPS) heats the outer periphery of the raw material inside the tank through a heating ring. Simultaneously, it utilizes an electromagnetic induction coil in conjunction with a rotating magnetic metal core to generate heat inside the stirring rod and stirring blades, heating both the inner and outer sides of the raw material at the same time. This ensures that the PPS raw material is heated evenly, promotes full melting and consistent viscosity. By setting a high-permeability alloy spiral strip on the outer wall of the magnetic metal core, the induced current density can be increased, the heating power can be enhanced, and the heating effect of the magnetic metal core can be improved.

[0012] 3. This mixing equipment for the production of polyphenylene sulfide (PPS) features conical airbags on both sides of the stirring blades that expand and contract through the cyclic inflation and deflation of a bidirectional air pump. This creates complex eddies and turbulence in the material, driving high-frequency flow of the material through dynamic airflow. This results in more uniform dispersion of the high-viscosity PPS raw material, reduces stirring resistance, and improves mixing efficiency. Simultaneously, a heat-conducting plate transfers heat to the stirring blades, and combined with the dynamic disturbance of the conical airbags, the heat is rapidly diffused throughout the PPS raw material, preventing localized heat accumulation and ensuring that the PPS raw material is mixed at a stable temperature. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall design of this utility model; Figure 2 This is an internal sectional view of the present invention; Figure 3 This is a schematic diagram of the structure of this utility model; Figure 4 This is a schematic diagram of the magnetic metal core of this utility model.

[0014] In the diagram: 1. Tank body; 2. Heating mechanism; 21. Heating ring; 22. Ceramic heat insulation plate; 23. Electromagnetic induction coil; 24. Motor; 25. Stirring rod; 26. Stirring blade; 27. Magnetic metal core; 28. High magnetic permeability alloy spiral strip; 29. ​​Heat-conducting plate; 3. Auxiliary mechanism; 31. Two-way air pump; 32. Connecting pipe; 33. Rotary joint; 34. Conical airbag; 4. Feed inlet; 5. Discharge pipe; 6. Ultrasonic vibrator. Detailed Implementation

[0015] 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.

[0016] Please see Figure 1-4 One embodiment of this utility model is: a mixing device for the production of polyphenylene sulfide, including a tank 1, the inner wall of the tank 1 being provided with a cavity, the top of the tank 1 being provided with a feed inlet 4, and a sealing cap being provided on the feed inlet 4 for sealing the tank 1 after the material is added, thereby reducing heat loss inside the tank 1, the bottom of the tank 1 being provided with a discharge pipe 5, and the discharge pipe 5 being provided with a control valve and an ultrasonic vibrator 6. The ultrasonic vibrator 6 is provided to facilitate the stable discharge of the mixed polyphenylene sulfide from the tank 1, avoiding blockage of the discharge pipe 5 and affecting the material discharge, and the tank 1 being provided with a heating mechanism 2 for heating and mixing the polyphenylene sulfide raw materials.

[0017] Heating mechanism 2 includes an electromagnetic induction coil 23 and a magnetic metal core 27. The electromagnetic induction coil 23 is disposed in the cavity of the tank 1, and the magnetic metal core 27 is disposed inside the tank 1. The outer wall of the magnetic metal core 27 has a spiral groove, which increases the contact area between the magnetic metal core 27 and the magnetic field. A high-permeability alloy spiral strip 28 is disposed on the inner wall of the spiral groove. The high-permeability alloy spiral strip 28 is made of iron-nickel alloy powder sintered and solidified. By setting the high-permeability alloy spiral strip 28, the induced current density when the magnetic metal core 27 cuts the magnetic field is increased, thereby increasing the heating power. A heat-conducting plate 29 is fixedly connected to the outer wall of the magnetic metal core 27, and the heat-conducting plate 29 extends to the stirring blade. Inside the tank 1, the heating mechanism 2 also includes a heating ring 21, which is installed in the cavity of the tank 1. The heating ring 21 and the electromagnetic induction coil 23 are alternately arranged in the cavity of the tank 1, and a ceramic heat insulation plate 22 is provided between the heating ring 21 and the electromagnetic induction coil 23. The ceramic heat insulation plate 22 is used to isolate the heating ring 21 and the electromagnetic induction coil 23 to prevent the high temperature generated by the heating ring 21 from affecting the electromagnetic induction coil 23. A motor 24 is installed on the top of the tank 1. The output end of the motor 24 is connected to a stirring rod 25 through a shock-absorbing coupling. A magnetic metal core 27 is installed inside the stirring rod 25. A stirring blade 26 is provided on the side of the stirring rod 25.

[0018] Working principle: Polyphenylene sulfide raw material is poured into the tank 1 through the feed port 4 and the sealing cap is closed. The inner wall of the tank 1 is heated by the heating ring 21. Alternating current is passed through the electromagnetic induction coil 23 to generate an alternating magnetic field. At the same time, the motor 24 is started. The motor 24 drives the stirring rod 25 to rotate through the shock-absorbing coupling. The rotation of the stirring rod 25 will drive the internal magnetic metal core 27 to rotate. When the magnetic metal core 27 rotates in the alternating magnetic field, a closed induced current will be generated inside the magnetic metal core 27 due to electromagnetic induction. According to Joule's law, when the induced current flows inside the magnetic metal core 27, it will be affected by the magnetic field. The heat generated by the resistance of the metal core 27 is transferred to the heat-conducting plate 29, thereby heating the stirring rod 25 and the stirring blade 26. In conjunction with the heating ring 21, the outer periphery and the inside of the polyphenylene sulfide raw material in the tank 1 are heated simultaneously, thereby achieving uniform heating of the polyphenylene sulfide raw material, promoting the melting of the polyphenylene sulfide raw material, reducing viscosity, and thus reducing the resistance during mixing. This allows the stirring rod 25 to mix more evenly. After mixing is completed, the polyphenylene sulfide is discharged from the tank 1 by opening the control valve. At the same time, the ultrasonic vibrator 6 is started to vibrate the discharge pipe 5 to prevent polyphenylene sulfide from clogging and affecting the discharge.

[0019] Please see Figure 1-4Based on the above embodiments, in another embodiment of this utility model, an auxiliary mechanism 3 is provided on the tank body 1. The auxiliary mechanism 3 includes a bidirectional air pump 31 and a connecting pipe 32. The bidirectional air pump 31 is installed on the top of the tank body 1. By setting the bidirectional air pump 31, the inside of the stirring rod 25 can be filled and defilled, thereby realizing the expansion and contraction of the conical air bag 34. One end of the connecting pipe 32 is connected to the output end of the bidirectional air pump 31, and the other end of the connecting pipe 32 is connected to the stirring rod 25 through a rotary joint 33. By setting the rotary joint 33, the bidirectional air pump 31 can fill the inside of the stirring rod 25 when the stirring rod 25 rotates. The conical air bag 34 is connected to the stirring blade 26 and is arranged on both sides of the stirring blade 26.

[0020] Working principle: When the stirring rod 25 rotates to mix the polyphenylene sulfide raw material, the bidirectional air pump 31 is started. The bidirectional air pump 31 circulates and releases air inside the stirring rod 25 through the connecting pipe 32 and the rotary joint 33. When the bidirectional air pump 31 releases air from the inside of the stirring rod 25, the conical air bladder 34 on the stirring blade 26 will expand and generate an outward thrust on the surrounding raw material. When the bidirectional air pump 31 releases air from the inside of the stirring rod 25, the conical air bladder 34 will contract, thereby forming a local negative pressure, which will drive the raw material to flow towards the stirring blade 26. This process is repeated, which will generate complex eddies and turbulence around the stirring blade 26, improving the mixing effect. At the same time, the air filling and releasing can make the heat generated by the magnetic metal core 27 evenly distributed in the stirring rod 25 and the stirring blade 26. Furthermore, the eddies and turbulence generated by the expansion and contraction of the conical air bladder 34 make the heating of the raw material inside the tank 1 more uniform and avoid local overheating.

[0021] This utility model provides a mixing device for the production of polyphenylene sulfide. There are many methods and approaches to implement this technical solution. The above description is only a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. All components not explicitly stated in this embodiment can be implemented using existing technology.

Claims

1. A mixing device for the production of polyphenylene sulfide, comprising a tank (1), wherein the inner wall of the tank (1) is provided with a cavity, characterized in that: The tank (1) is provided with a heating mechanism (2), which includes an electromagnetic induction coil (23) and a magnetic metal core (27). The electromagnetic induction coil (23) is located in the cavity of the tank (1), and the magnetic metal core (27) is located inside the tank (1). The outer wall of the magnetic metal core (27) is provided with a spiral groove, and the inner wall of the spiral groove is provided with a high permeability alloy spiral strip (28).

2. The mixing equipment for the production of polyphenylene sulfide according to claim 1, characterized in that: The heating mechanism (2) also includes a heating ring (21), which is installed in the cavity of the tank (1). The heating ring (21) and the electromagnetic induction coil (23) are alternately arranged in the cavity of the tank (1), and a ceramic heat insulation plate (22) is provided between the heating ring (21) and the electromagnetic induction coil (23).

3. A mixing device for the production of polyphenylene sulfide according to claim 2, characterized in that: A motor (24) is installed on the top of the tank (1). A stirring rod (25) is installed at the output end of the motor (24) through a shock-absorbing coupling. A magnetic metal core (27) is installed inside the stirring rod (25). A stirring blade (26) is connected to the side of the stirring rod (25).

4. A mixing device for the production of polyphenylene sulfide according to claim 3, characterized in that: A heat-conducting plate (29) is fixedly connected to the outer wall of the magnetic metal core (27), and the heat-conducting plate (29) extends into the interior of the stirring blade (26).

5. A mixing device for the production of polyphenylene sulfide according to claim 4, characterized in that: An auxiliary mechanism (3) is provided on the tank (1). The auxiliary mechanism (3) includes a bidirectional air pump (31) and a connecting pipe (32). The bidirectional air pump (31) is installed on the top of the tank (1). One end of the connecting pipe (32) is connected to the output end of the bidirectional air pump (31), and the other end of the connecting pipe (32) is connected to the stirring rod (25) through a rotary joint (33).

6. A mixing device for the production of polyphenylene sulfide according to claim 5, characterized in that: A conical airbag (34) is connected to the stirring blade (26), and the conical airbag (34) is disposed on both sides of the stirring blade (26).

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