A finishing device for thermoplastic resin ultrafine powder

Abstract

The utility model discloses a kind of arrangement of thermoplastic resin superfine powder, which is composed of automatic feeding machine, cyclone classifier, gas-solid separator, oscillating screen and dust collector;The classifier feed inlet of cyclone classifier is connected with the discharge port of automatic feeding machine;The separator feed inlet of gas-solid separator is connected with the fine powder discharge port of cyclone classifier;The oscillating screen feed inlet of oscillating screen is connected with the separator discharge port of gas-solid separator;The dust collector air inlet of dust collector is connected with the separator air outlet of gas-solid separator by fan.The arrangement of the utility model first removes large particles in resin powder using cyclone classifier, then removes tiny particles in resin powder using gas-solid separator, obtains resin powder of certain particle size range, and finally performs fine screening using oscillating screen, forms gradient classification system, realizes "coarse classification+fine screening" segmented processing, not only improves separation accuracy and classification efficiency, but also improves product quality and production capacity.

Description

Technical Field

[0001] This utility model relates to a finishing device for thermoplastic resin ultrafine powder. Background Technology

[0002] Thermoplastic resin ultrafine powder refers to polymer powder that can be repeatedly softened and molded after heating. The common particle size range is between 1 and 300 μm. Due to its small particle size and large specific surface area, it has high surface energy and exhibits unique physical and chemical properties, and has wide applications in the fields of magnetism, mechanics, catalysis and adsorption.

[0003] The addition of ultrafine powders of thermoplastic polyamide resin and polyimide resin to composite materials can improve the elasticity, impact resistance, aging resistance, anti-slip properties, and processing flexibility of the composite materials; ultrafine powders of thermoplastic polyurethane elastomer are used in hot melt adhesives, hot stamping, and coating processes to form transparent, highly wear-resistant coatings, suitable for the decoration and protection of substrates such as metal and plastic housings; ultrafine powders of polyethylene terephthalate, polymethyl methacrylate, and polyetheretherketone are widely used in injection molding coatings, precision parts spraying, cosmetics, and the manufacture of corrosion-resistant components.

[0004] Thermoplastic resin ultrafine powder is prone to bridging, compaction, agglomeration, and powder blockage during the transfer process, which causes screen clogging in traditional screening equipment, reducing classification efficiency and accuracy. The resulting products are difficult to meet the needs of high-end applications at home and abroad. Utility Model Content

[0005] The purpose of this invention is to solve the above problems and provide a finishing device for thermoplastic resin ultrafine powder.

[0006] The technical solution to achieve the purpose of this utility model is: a sorting device for ultrafine thermoplastic resin powder, comprising an automatic feeder, a cyclone classifier, a gas-solid separator, a vibrating screen, and a dust collector; the automatic feeder is provided with a feeder outlet; the cyclone classifier is provided with a classifier inlet, a fine powder outlet, a coarse powder outlet, and a secondary air inlet; the cyclone classifier includes an upper classifying chamber, a lower classifying chamber, a classifying impeller, and a driving device; the classifying impeller is disposed in the upper classifying chamber and connected to the driving device; the gas-solid separator is provided with a separator inlet, a separator outlet, and a separator air outlet; the vibrating screen is provided with a vibrating screen inlet and a vibrating screen outlet. The vibrating screen includes a base, a screen frame, and a top cover; a high-frequency oscillation component is provided at the bottom of the screen frame; a screen mesh is provided inside the screen frame; the screen frame and the base are connected by a spring; the dust collector is provided with a dust collector inlet, a dust collector outlet, a solid dust outlet, and a return air outlet; the cyclone classifier's inlet is connected to the automatic feeder's outlet; the gas-solid separator's inlet is connected to the cyclone classifier's fine powder outlet; the vibrating screen's inlet is connected to the gas-solid separator's outlet; the dust collector's inlet and the gas-solid separator's outlet are connected via a fan.

[0007] The return air inlet of the dust collector is connected to the secondary air inlet of the cyclone classifier.

[0008] The inlet of the vibrating screen and the outlet of the gas-solid separator are flexibly connected.

[0009] The vibrating screen has 2 to 4 layers of screen mesh inside the screen frame; the vibrating screen has 2 to 4 discharge ports.

[0010] The positive effects of this utility model are: (1) The sorting device of this utility model first uses a cyclone classifier to remove large particles from the resin powder, then uses a gas-solid separator to remove small particles from the resin powder, and obtains resin powder with a certain particle size range. Finally, it uses a vibrating screen for fine screening to form a gradient classification system, realizing the segmented processing of "coarse classification + fine screening". This not only improves the separation accuracy and classification efficiency, but also enhances product quality and production capacity.

[0011] (2) The sorting device of this utility model also uses the return air of the dust collector as the secondary air of the cyclone classifier, which not only reduces the exhaust gas emissions, but also reduces energy consumption. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the thermoplastic resin ultrafine powder processing device of this utility model.

[0013] Figure 2 for Figure 1 A schematic diagram of the structure of the cyclone classifier.

[0014] Figure 3 for Figure 1 A schematic diagram of the structure of the vibrating screen. Detailed Implementation

[0015] (Example 1) See Figure 1 The thermoplastic resin ultrafine powder processing device in this embodiment consists of an automatic feeder 100, a cyclone classifier 200, a gas-solid separator 300, a vibrating screen 400, and a dust collector 500.

[0016] The automatic feeder 100 is equipped with a feeder outlet 100-1.

[0017] The cyclone classifier 200 is equipped with a classifier inlet 200-1, a fine powder outlet 200-2, a coarse powder outlet 200-3, and a secondary air inlet 200-4; the classifier inlet 200-1 of the cyclone classifier 200 is connected to the feeder outlet 100-1 of the automatic feeder 100.

[0018] See Figure 2 The cyclone classifier 200 includes an upper classifying chamber 210, a lower classifying chamber 220, a classifying impeller 230, and a drive device 240; the classifying impeller 230 is disposed in the upper classifying chamber 210 and connected to the drive device 240.

[0019] The gas-solid separator 300 is provided with a separator inlet 300-1, a separator outlet 300-2 and a separator air outlet 300-3; the separator inlet 300-1 of the gas-solid separator 300 is connected to the fine powder outlet 200-2 of the cyclone classifier 200.

[0020] The vibrating screen 400 is provided with a vibrating screen inlet 400-1 and a vibrating screen outlet 400-2; the vibrating screen inlet 400-1 of the vibrating screen 400 is flexibly connected to the separator outlet 300-2 of the gas-solid separator 300.

[0021] See Figure 3 The vibrating screen 400 includes a base 410, a screen frame 420, and a top cover 430; a high-frequency oscillation component 440 is provided at the bottom of the screen frame 420; a screen mesh 450 is provided inside the screen frame 420; the screen frame 420 and the base 410 are connected by a spring 460; in this embodiment, the screen mesh 450 inside the screen frame 420 of the vibrating screen 400 has 3 layers, and the screen hole diameter of the 3 layers of screen mesh 450 decreases from top to bottom; correspondingly, there are also 3 discharge ports 400-2.

[0022] The dust collector 500 is equipped with a dust collector inlet 500-1, a dust collector outlet 500-2, a solid dust outlet 500-3, and a return air inlet 500-4; the dust collector inlet 500-1 and the separator outlet 300-3 of the gas-solid separator 300 are connected via a fan 600, and the return air inlet 500-4 of the dust collector 500 is connected to the secondary air inlet 204 of the cyclone classifier 200. Figure 1 (Not shown in the drawing).

[0023] The thermoplastic resin ultrafine powder finishing device in this embodiment is controlled by a DCS system and a SIS system.

[0024] The operation procedure of the thermoplastic resin ultrafine powder finishing device in this embodiment is as follows: Adjust the frequency of the inverter 240 drive unit of the cyclone classifier 200 according to the particle size requirements of the graded product. At the same time, start the blower 600, the cyclone classifier 200 and the automatic feeder 100. Then start the vibrating screen 400. Next, according to the operating status of each piece of equipment and the particle size requirements of the graded product, gradually increase the power of the blower 600 and the secondary air inlet 200-4 of the cyclone classifier 200 to accelerate the feeding speed to the specified amount.

[0025] Intermittently open the coarse powder outlet 200-3 of the cyclone classifier 200 and the solid dust outlet 500-3 of the dust collector 500 as required, and ensure that the outlet 400-2 of the vibrating screen 400 is unobstructed.

[0026] After processing, the large particles of the thermoplastic resin ultrafine powder are discharged from the coarse powder outlet 200-3 of the cyclone classifier 200, the small particles are discharged from the solid dust outlet 500-3 of the dust collector 500, and the ultrafine powder discharged from the outlet 400-2 of the vibrating screen 400 has a decreasing particle size.

Claims

1. A finishing device for thermoplastic resin ultrafine powder, characterized in that: It consists of an automatic feeder (100), a cyclone classifier (200), a gas-solid separator (300), a vibrating screen (400), and a dust collector (500); The automatic feeder (100) is provided with a feeder outlet (100-1); The cyclone classifier (200) is provided with a classifier inlet (200-1), a fine powder outlet (200-2), a coarse powder outlet (200-3), and a secondary air inlet (200-4); the cyclone classifier (200) includes an upper classifying chamber (210), a lower classifying chamber (220), a classifying impeller (230), and a drive device (240); the classifying impeller (230) is disposed in the upper classifying chamber (210) and connected to the drive device (240); The gas-solid separator (300) is provided with a separator inlet (300-1), a separator outlet (300-2), and a separator air outlet (300-3). The vibrating screen (400) is provided with a vibrating screen inlet (400-1) and a vibrating screen outlet (400-2); the vibrating screen (400) includes a base (410), a screen frame (420) and a top cover (430); a high-frequency oscillation component (440) is provided at the bottom of the screen frame (420); a screen mesh (450) is provided inside the screen frame (420); the screen frame (420) and the base (410) are connected by a spring (460); The dust collector (500) is provided with a dust collector inlet (500-1), a dust collector outlet (500-2), a solid dust outlet (500-3), and a return air inlet (500-4). The cyclone classifier (200-1) is connected to the feeder outlet (100-1) of the automatic feeder (100); the gas-solid separator (300-1) is connected to the fine powder outlet (200-2) of the cyclone classifier (200); the vibrating screen (400-1) is connected to the separator outlet (300-2) of the gas-solid separator (300); the dust collector inlet (500-1) of the dust collector (500) is connected to the separator outlet (300-3) of the gas-solid separator (300) via a fan (600).

2. The finishing device of thermoplastic resin ultrafine powder according to claim 1, characterized by: The return air inlet (500-4) of the dust collector (500) is connected to the secondary air inlet (200-4) of the cyclone classifier (200).

3. The finishing device for thermoplastic resin ultrafine powder according to claim 1, characterized in that: The vibrating screen inlet (400-1) of the vibrating screen (400) and the separator outlet (300-2) of the gas-solid separator (300) are flexibly connected.

4. The finishing device of thermoplastic resin ultrafine powder according to claim 1, characterized by: The vibrating screen (400) has 2 to 4 layers of screen mesh (450) inside the screen frame (420); the vibrating screen (400-2) has 2 to 4 outlets.

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