• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A continuous granulator of the double-screw type includes a mechanism by which the degree of kneading can be controlled, and prevents lateral communication between the screw ends. A gear pump connected after the screw cylinders delivers the material to the cutting unit.
    公开号:SU1272971A3
    申请号:SU823521801
    申请日:1982-11-17
    公开日:1986-11-23
    发明作者:Симицу Нобуаки
    申请人:Дзе Джапэн Стил Воркс,Лтд (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to a device for granulating materials in a molten state.
    The purpose of the invention is to increase productivity, reduce energy consumption and improve reliability.
    FIG. 1 shows a continuous granulator, side view (partially in section) '; in fig. 2 section a-a in Fig. 1; in fig. 3 dump chamber.
    The continuous granulator contains a housing 1 in the form of two cylinders ^ screws 2 installed in it, a gear pump 3 connected in series to the housing!, A means for regulating the degree of plasticization (not shown), a pressure sensor 4 installed at the end of the screw. The granulator additionally contains a hydraulic cylinder 5 connected to the housing 1, a pressure release chamber 6 installed between the screws 2 and the gear pump. '3, a cutting unit 7 installed at the outlet of the pump 3. The housing 1 is made of the first 8 and second 9 sections with different cross-sections and a tapered section 10 between them .. The inner diameter of the second section 9 of the cylinder is less than the inner diameter of the first section 8. Cylinders in the second section, they are made non-communicating with each other. The screws 2 are driven in rotation by an electric motor 11 through a gearbox 12 .. Each of the screws 2 is made of a rotor 13 'for melting and mixing the supplied material, a conical part 14, forming a conical groove 15 with a conical section 10 of the body to regulate the degree of plasticization of the material , and an end part 16 projecting forward from the conical groove 15. The copier has a funnel 17 for loading material into it. The gap between the tapered section 10 of the housing and the tapered part 14 of the screw can be adjusted by axial displacement of the housing 1. The housing 1 (Fig. 2) has two independent cylindrical chambers in which the end portions 16 of the screw are located.
    The body 1 has a plurality of wheels 18 rotatably mounted on the base 19, so that the body 1 can be moved axially using the hydraulic cylinder 5 located on the base
    19. The cylinder 1 has a hole 20 for communication with the atmosphere, located in front of the groove 15, and there is also a pressure relief chamber 6 at its remote end, to which a gear pump 3 is connected. Chamber 6 has a pressure sensor 4, which when a certain pressure in the chamber 6 is perceived, it sends a signal to a control unit (not shown), which drives the gear pump 3. The cutting unit 7 is located in front of the gear pump 3 and has a screen 21 inside it 15, a die 22, cutting knives and other parts ( not shown).
    The machine (FIG. 3) may have an outlet valve 23 located in front of the gear pump (outside 20 of the chamber 6), or dies, or both, to discharge the molten resin material.
    The purpose of installing an exhaust valve in front of the gear pump is to prevent any unmelted material or foreign material from entering the gear pump and thereby damaging the gear pump teeth when the resin material is melted and mixed in the kneader.
    When starting the granulator, the outlet valve is held open to allow resin material to flow through it. After confirming that the resin material is sufficiently melted and free of foreign matter, the release valve is switched to supply the molten resin material to the gear pump.
    An outlet valve can be located in front of the dies to sufficiently clean the resin material between the gear pump and the dies. when the machine stops before cutting. By starting the cutting operation after the discharge valve is opened to completely remove the resin material from the channel between the gear pump and the dies, the machine can produce granular material.
    The outlet valve can be combined. with a gear pump or dies, or, if necessary, with both.
    Gear pump 3 and cutting unit 7 are mounted on base 24
    1272971 4 with wheels, so that the gear pump 3 and the cutting unit 7 are able to follow the axial movements of the housing 1.
    The continuous granulator 5 of the described design operates as follows.
    The resin material, which is introduced through the filament 17, is fed by means of screws 2. Next, the resin material is melted and mixed by means of a rotor 13. The degree to which the material is mixed is controlled by actuating a hydraulic cylinder 5, which 15 moves the housing I to change the conical groove 15. The molten resin material, after plasticizing it to the required degree, is fed by means of screw end parts 16 into the pressure relief chamber 6, from which the molten material I is fed to the gear pump 3. While the molten material is supplied by screw end 25 parts 16, air is removed from it through the ventilation hole 20. The molten resin material is supplied by means of a gear pump 3 under high pressure of the order of 150-350 kg / cm 2 into the cutting unit 7, in which the material is granulated. The pressure inside the chamber 6, under which the molten resin material is maintained, is sensed by the sensor 4 pressures. The speed of rotation of the pump or the speed of the electric motor is regulated by a control unit (not shown} through a control "feedback" circuit, as a result of which the measured pressure drops each time - 40 dae'g within the specified limits (5-10 kg / cm g ) 4 Molten resin the material is subjected to low pressure in the range of 5-10 kg / cm 2 in front of the gear pump 3 to a low pressure in the range of 150-350 kg / cm 2 after the gear pump 3.
    The proposed continuous granulator can easily control the degree to which the material is kneaded by adjusting the gap between the conical portions. body and auger during machine operation '. Thus, the material can be mixed at a low temperature 55 without the risk of excessive movement. The kneaded material can be fed to the cutting unit by means of a gear pump 3 under high pressure, while the pressure in the pressure relief chamber 6 is kept at a constant low level, which allows the end portions 16 of the augers to be relatively short. The reduced pressure in the pressure relief chamber 6 leads to a decrease in the force acting in the lateral direction on the end portions 16 of the screws. The cylinder chambers are independent of one another after the groove 15, which allows the molten resin material to exert pressure on the ends 16 of the screw uniformly in all directions and therefore act as bearings to support the screw ends 16, which are therefore less likely to interact with the adjacent walls and do not cause • formation of cracks in the latter. The augers 2 can be driven at high speed to process large quantities of resin at high speed. -Because the continuous granulator 'does not over-mix the material and is fed at a relatively low pressure downstream of the gear pump, the granulator consumes a significantly reduced energy quality.
    The proposed granulator (Fig. 3) - can reduce the required energy by about 20-25%.
    Although in the described embodiment the pressure in the pressure relief chamber is kept constant by adjusting the speed of rotation of the gear pump, the pressure can also be controlled by adjusting the speed / motor to change the amount of Smolny material supplied. The inner surface of the barrel wall can be coated with cobalt or nickel to more effectively prevent damage to the barrel by the screws. The screws can rotate at a higher speed, depending on the choice of the size of the screw plate, within the range of 0.1-0.5 of the inner diameter of the cylinder, which provides an increase in productivity.
    权利要求:
    Claims (3)
    [1]
    The invention relates to a device for granulating materials in a molten state. The purpose of the invention is to improve performance, reduce energy consumption and increase reliability. FIG. 1 shows a continuous granulator, side view (partially in section) in FIG. 2, section A-A in FIG. ; in fig. 3 camera reset. The continuous granulator comprises a housing 1 in the form of two cylinders mounted thereto augers 2, a gear pump 3, a sub, sequentially connected to the housing 1, means for controlling the degree of plasticization (not shown), a pressure sensor 4 installed at the end of the auger. The granulator additionally contains a hydraulic cylinder 5 connected to the housing 1, a pressure relief chamber 8 installed between the screws 2 and a gear pump 3, a cutting unit 7 mounted on you out of the pump 3. The housing 1 is filled from the first 8 and second 9 sections with different cross sections and a conic section 10 between them. The internal diameter of the second section 9 of the cylinder is less than the internal diameter of the first section 8. The cylinders in the second section are non-communicating with each other. The screws 2 are driven into rotation by the electromotor 11 through the speed box 12. Each of the screws 2 is made of a rotor 13 for melting and mixing the feed material, the conical part 14, which forms the conical groove 15 with the conical section 10 of the housing material, and end portion 16, protruding from the tapered groove 15. The copier has a funnel 17 for loading material into it. The gap between the conical section 10 of the housing and the conical part 14 of the screw can be adjusted by axial displacement of the housing 1. The housing 1 (Fig. 2) has two independent cylindrical chambers in which the end portions 16 of the screw are located. The housing 1 has a plurality of wheels 18 rotatably mounted on the base 19, so that the housing 1 can be moved axially using a hydraulic cylinder 5 placed on the base 19. In the cylinder 1, a hole 20 is made to communicate with the atmosphere, located in front of the groove 15 and there is also a pressure relief chamber 6 at its remote end, to which a gear pump 3 is connected. In pressure chamber 6 there is a pressure sensor 4, which, when it detects a certain pressure in chamber 6, sends a signal to the control unit (not rendered), which actuates the gear pump 3. The cutting unit 7 is located in front of the gear pump 3 and has inside SEB screen 21, the die 22, the cutting blades and other components (not shown). The machine (FIG. 3) may have an exhaust valve 23, located in front of a gear pump (camera twist 6), or dies, or both., To release the molten resin material. The purpose of installing an exhaust valve in front of a gear pump is to prevent unmelted masses or inclusions from entering the gear pump and, due to this damage to the gear pump teeth, when the resin material is melted and kneaded in the kneader. When starting the granulator, the exhaust valve is kept open to allow the resin material to flow through it. After confirming that the resin material is sufficiently molten and free from impurities, the exhaust valve switches to supply molten resin material to the gear pump. An exhaust valve may be located in front of the dies for sufficient cleaning of the resin material between the gear pump and the dies. when the machine stops before the cutting operation. As a result, the cutting operation is started after the exhaust valve opens to completely remove the resin material from the flow channel with a gear pump and spinnerets, the machine can produce granular material. The bleed valve may be in combination with a gear pump or spinnerers, or, if necessary, with both. The gear pump 3 and the cutting unit 7 are mounted on the base 24 with wheels, so that the gear pump 3 and the cutting unit 7 have the ability to follow the axial movements of the body 1. The continuous granulator of the described construction works in the following way. The smolny material, which is introduced through the funnel 17, is fed through screws.
    [2]
    2. Next, the resin material is melted and agitated. By means of the rotor 13. The extent to which the material is agitated is controlled by actuating a hydraulic cylinder 5 that moves body I to change the conical groove 15. The molten material is molded to the desired degree supplied by screw ends 16 to chamber 6 for pressure relief, from which molten material is fed to gear pump 3. While molten material is fed by screw ends the air outlets through air vent 20. The molten resin material is supplied by means of a gear pump 3 under high pressure in the order of 150-350 kg / cm to a cutting unit 7 in which the material is granulated. Pressure inside chamber 6 under which the molten imaging material is supported, a pressure sensor 4 is sensed. The speed of rotation of the pump or the speed of the electric motor is controlled by a control unit (not shown) through the control feedback circuit, as a result of which the measured pressure gives a predetermined range {5-10 kg / cm). The molten resin material is subjected to low pressure. in the limit x 5-10 KG / CM before the gear pump 3 and the high pressure in the range of 150-350 kg / cm after the gear pump
    [3]
    3. The proposed continuous granulator can easily control the degree to which the material is kneaded by adjusting the gap between the conical section. housing and P1neka at the time of the machine. In this way, the material can be stirred at low temperature without the risk of over-moving it. The plasticized material can be fed to the cutting unit by means of a gear pump 3 under high pressure, while the pressure in the pressure relief chamber 6 is kept at a constant low level, which allows the end portions 16 of the screws to be relatively short. The reduced pressure in the pressure relief chamber 6 leads to a decrease in the force acting in the lateral direction on the end portions of the augers 16. The cylinder chambers are independent of each other after the groove 15, which allows the molten resin material to exert pressure on the end portions of the screw 16 evenly in all directions and therefore act as bearings to support the screw end portions 16, which are therefore less susceptible to interaction with adjacent walls and do not cause the formation of cracks in the latter. The screws 2 can be rotated at high speed to handle a large amount of resin at high speed. - Since the material in the continuous granulator does not mix excessively and is supplied at a relatively low pressure after the gear pump, the granulator consumes a significantly lower quality of energy. The proposed granulator (fig.Z) can reduce the energy required by approximately 20-25%. Although in the described embodiment the pressure in the pressure relief chamber is kept constant by adjusting the speed of rotation of a gear pump, pressure can also be controlled by adjusting the speed of rotation of the engine to change the amount of resin flow. A cobalt or nickel based coating may be applied to the inner wall surface of the cylinder to more effectively prevent the screws from damaging the cylinder. The augers can rotate at a higher speed depending on the choice of the size of the auger plate in the range of 0.1-0.5 of the inner diameter of the cylinder, which provides increased productivity. Invention Formula. Eni continuous granulator, comprising a body in the form of two chi
    类似技术:
    公开号 | 公开日 | 专利标题
    SU1272971A3|1986-11-23|Continuous=action granulator
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    同族专利:
    公开号 | 公开日
    IT1148465B|1986-12-03|
    US4890996A|1990-01-02|
    JPS5887013A|1983-05-24|
    GB2110981B|1985-09-18|
    FR2516437B1|1985-06-28|
    FR2516437A1|1983-05-20|
    CA1178412A|1984-11-27|
    DE3242641A1|1983-06-09|
    GB2110981A|1983-06-29|
    IT8249503D0|1982-11-16|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    JP56183863A|JPS5887013A|1981-11-18|1981-11-18|Continuous kneading and granulating apparatus|
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