• 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:
    ELEMENT OF THE SUPPORTS AND MIXES FOR A TWO-FINGER EXTRUDER, made in the form of truncated cones arranged in pairs opposite to each other in the same plane with the formation of a gap between the outer surfaces of the cones and mounted on smooth shafts with worm sleeves that are in engagement, differing in what is behind the support and mixing element 5 is a number of additional support and mixing elements with various quantities. the angles of the cones located between the actively-transporting zones of the screw sleeves 3 and 8 on smooth shafts 1, the pair of supporting and mixing elements having the same angle of cones, and the replaceable g spacers 7 to change the gap 6 between the elements of the supporting and mixing elements backwater and sm (L sheni.
    公开号:SU1172738A1
    申请号:SU827772327
    申请日:1982-03-12
    公开日:1985-08-15
    发明作者:Дитер Андерш
    申请人:Феб Комбинат Текстима；
    IPC主号:
    专利说明:

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    1 The invention relates to a backpressure and mixing element for a double-screw extruder with intermeshing worm shafts for making plastics. Extruders are known in which elements having the shape of a truncated cone are located on the worm shaft. These elements are made, for example, with holes parallel to the axis, or with axial grooves, located around the perimeter for the ne. displacement of plastic mass before the degassing zone and its intensive mixing (German Application DE-AS 2155855, class B 29 F 3/03, 1973 and German Application DE-OS 2526739, class B 29 F 3/03, 1976). The purpose of the invention is to improve the quality of the extrudate during the preparation of plastics or to ensure that the quality of the extrudate is the same, with a possible reduction in the length of the worm shafts and the cylinder, which leads to a reduction in the cost of manufacturing the extruder and the cost of material. The task of the invention is to create elements for backwater and mixing, used for double screw extruders, which provide an opportunity by varying their location on the worm, shafts, between active transport zones, optimal adaptation of the mixing and homogenization process to various technological tasks. The element for backpressure and displacement is made in the form of a body having the shape of a truncated cone with a smooth narcotic surface, and several elements are placed next to each other in the form of a combination between the active-transporting section of the screw on the worm shafts. The elements of the backwater and mixing in different combinations of arrangement have a different value of the angle of the cone, and always two elements having the same value of the angle of the cone are opposite each other in the opposite direction on the shaft. A different configuration of the supporting elements and the mixing between their outer surfaces in the engagement range of the worm shafts creates a gap of a certain size, in which the molten, plastic material undergoes a process of shearing, kneading and mixing. With 1; the purpose of influencing the intensity of this process and its adaptation to the requirements of the corresponding technological task, the gap size can be set so that the supporting and mixing elements can move axially on the worm shafts with the help of intermediate seams of cylindrical spacer washers of the appropriate thickness and diameter. The effect of supporting and mixing the arrangement of combinations can be regulated, on the one hand, by the number of elements in the combination and, on the other hand, by the matching of the cone angle of the element pair. The proposed backing and mixing element at various combinations of arrangements for twin-screw extruders provides an increase in the efficiency of the mixing and homogenization process and an improvement in the quality of the extrudate. The variable arrangement of these elements in combination between active transport hub sleeves allows optimal adaptation of the extruder to the most varied processing tasks during the preparation of plastics. The drawing shows an extruder cylinder with a combination of four pairs of support and mixing elements, a longitudinal section. The support and displacement elements 5 are made in the form of truncated cones arranged in pairs opposite each other in the same plane with the formation of a gap 6 between the outer surfaces of the cones. The support and mixing elements 5 are mounted on smooth shafts 1 between the active transporting zones of the worm sleeves 3 and 8 in the cylinder 2 of the double screw extruder. Elements 5 of the backwater and mixing are made with different values of ANGLE. In the cones, and a pair of elements 5 of the backwater has the same angle of cones. Replaceable spacers 7 are interposed between the back-up and mixing elements 5 to change the gap between the elements 5.
    In front of the retention zone in the direction of movement 9 of the plastic mass, there are triangular kneading discs A.
    The device works as follows.
    Worm bushings 3, which are engaged, engage the plastic mass in the cylinder 2 in direction 9 to the back-and-mix zone, which is formed from two chambers (left and right inner diameters of the cylinder).
    In the direction of movement 9, the plastic mass enters the left open chamber. The triangular kneading discs 4 direct the plastic mass to the left free chamber to eliminate the dead portion.
    With the help of the backpressure and mixing elements 5, the entire mass flow is constantly directed from one chamber to another. At the same time, intensive mixing of the material and thermal transfer of plastic
    The melt is determined by the number of element pairs in the combination and the angle of the cones of the elements.
    The intensity of the shearing process and the kneading of the mass between the outer surfaces of the back-up and mixing elements 5 is regulated by the set value of the gap 6 with the help of replaceable spacers 7.
    Constantly changing the direction of the mass flow in the inactive transporting zone of the support and mixing elements 5 creates pressure and backwater in the mass to the worm sleeves 8. As a result, the homogenization process is improved, i.e. pressure has a positive effect on the homogenization process.
    It is recognized as an invention according to the results of the examination carried out by the Office for the Invention of the German Democratic Republic.
    权利要求:
    Claims (1)
    [1]
    SUPPORT AND MIXING ELEMENT FOR A TWO-HOLE EXTRUDER, made in the form of truncated cones arranged in pairs opposite each other in the same plane with the formation of a gap between the outer surfaces of the cones and mounted on smooth shafts with worm bushings meshing, characterized in that by the element 5 backwater and mixing is a number of additional elements backwater and mixing with different sizes. the angles of the cones placed between the active transporting zones of the worm bushings 3 and 8 on the smooth shafts 1, the pair of booster and mixing elements having the same cone angle, and between the booster and mixing elements there are replaceable spacer washers 7 for changing the clearance 6 between elements of backwater and mixing.
    SU, 1172738
    1 1172738 2
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    同族专利:
    公开号 | 公开日
    DD159836A3|1983-04-13|
    CS245731B1|1986-10-16|
    HU183902B|1984-06-28|
    DE3205428A1|1982-11-25|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE4200788A1|1992-01-15|1993-07-22|Bayer Ag|SNAIL MACHINE WITH STOCK ELEMENTS|
    DE3738700C2|1987-11-14|1989-09-28|Werner & Pfleiderer Gmbh, 7000 Stuttgart, De|
    DE10207145B4|2002-02-20|2004-07-15|Blach, Josef A.|Device for dispersing and melting flowable materials|
    DE10233213B4|2002-07-22|2004-09-09|3+Extruder Gmbh|extruder|
    KR100998619B1|2008-07-22|2010-12-07|신일화학공업|Continuous flow extruder|
    EP2243610A1|2009-04-20|2010-10-27|Nederlandse Organisatie voor toegepast -natuurwetenschappelijk onderzoek TNO|Method and apparatus for low shear mixing of shear sensitive materials|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DD81229749A|DD159836A3|1981-05-06|1981-05-06|JAM AND MIXING ELEMENT FOR DOUBLE SCREW EXTRUDERS|
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