• 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:

    公开号:SU1837954A3
    申请号:SU914894244
    申请日:1991-01-23
    公开日:1993-08-30
    发明作者:Khshanetski Zigfrid
    申请人:Xepmahh Бepшtopфф Maшиhehбaу Гmбx；
    IPC主号:
    专利说明:

    The invention relates to a multi-roll film reactor carrying out the process of polymer compression.
    The aim of the invention is to simplify the design of the film reactor and increase the reliability in operation.
    This goal is achieved in that the film reactor feed roll drive consists of upper and lower nodes with planetary rolls, which inform the feed rolls about its own axis rotation and planetary motion along the drive feed rolls, adjacent of which are installed with the possibility of interaction. The drive of the feed rolls consists of upper and lower nodes with planetary rolls, which inform the feed rolls about its own axis and planetary movement along the inner walls of the housing, and the feed rolls are kinematically connected with planetary rolls. The upper and lower drive units contain kinematically connected central spindles with planetary rollers located at the same distance from each other and made with: gear cutting and diameters smaller; than the diameter of the central spindle, and the gear cutting of planetary rolls is kinematically connected with the inner wall of the housing having a gear cutting. The spindles of the upper and lower nodes are connected through holes with a hollow shaft. The hollow shaft is associated with a source of vacuum or overpressure. 5 s P. f-ly, 4 ill.
    the inner walls of the housing, while the feed rolls are kinematically connected with planetary rolls.
    Moreover, the upper and lower drive units contain kinematically connected central spindles with planetary rolls located at the same distance from each other and made with gear cutting and smaller diameters. than the diameter of the central spindle, and the gear cutting of planetary rolls is kinematically connected to
    1837954 AZ pusa toothed ring: spindles of the upper and lower nodes are connected by means of a hollow central shaft, along the lateral surface of which transverse holes are made, while at one end the shaft is connected to a vacuum or overpressure source and the drive is located above the upper spindle; the central spindle of the upper drive unit is made integral with the central shaft and the spindle of the lower drive unit; the melt supplying device is made in the form of an annular collector with several supplying holes and is located in the upper part of the housing; a feeding screw is installed under the planetary rollers of the lower drive unit, which causes melt sealing with the housing.
    The proposed design of the reactor section with planetary feed rolls solves all problems in a simple and economical way, since only one shaft comes out of the prepress chamber, in particular, the drive shaft of the central spindle, which must be sealed. According to the invention, a complex drive is no longer required, providing a rotational movement of the feed rolls, and this does not affect the functioning of the film reactor. In a very simple way, it is ensured that all the feed rolls of the reactor rotate absolutely synchronously and evenly due to the presence of a power circuit at the top and / or bottom, which is expressed in the presence of an upper and / or lower connection of the feed rolls to the planetary roll of the reactor. In addition to its rotation, the feed rolls rotate in a circular path around the central spindle due to the presence of engagement in the area of the central spindle. Due to the circular circulation along the inner walls of the housing, the latter is thereby cleaned; there is no need to rotate the housing.
    In addition, the melt present in the reactor section by the feed rolls undergoes additional homogenization due to the rolling movement between the gear planetary roll and the gear internal wall of the reactor on the one hand and the gear surface of the central spindle on the other hand. The axial length of the particular section of the reactor with transfer rolls depends on the viscosity of the melt and its properties, • The sections of the reactor with feed rolls can also carry out only drive functions without any homogenization effect. In this case, this section may be very short.
    It is advisable to connect the central spindle of the upper section of the reactor with the central spindle of the lower section by means of a shaft having a smaller diameter, so that between the two sections a large pre-pressing chamber is formed. The central spindle of the upper and lower sections of the reactor, as well as the shaft can be made in one piece, so that both sections of the reactor together with the intermediate feed rolls rotate absolutely synchronously. The reactor drive, which rotates the feed rolls, is connected to a shaft connected to the upper central spindle.
    However, in very large reactors it is advisable, for example, to screw the upper and lower components of the central spindle with a shaft receiving the degassing hole.
    A hole is located coaxially with the upper part of the central spindle, which is connected with the degassing hole of the shaft and with a device designed to create a vacuum.
    In simple and cheap designs, the reactor feed rolls are based and rotated on only one side. With this form of execution, the ends of the rolls, which are not guided by planetary rolls, are based in the annular recesses of the lower flange. With this form of execution, the feed rolls rotate around a central displacement housing made in the form of a cone.
    In FIG. 1 shows a longitudinal section of a thin-film reactor: FIG. 2 is a longitudinal section through a thin-film reactor of another embodiment: FIG. 3, section Ill-Ill in FIG. 1; in FIG. 4 - section IV - IV in FIG. 1. ·
    The reactor has a housing 1 containing upper 2 and lower 3 nodes connected by feed rolls 4. The drive shaft 5 is connected to a central spindle 6 connected to the lower central spindle 7 of the lower portion 3 of the reactor via a shaft 8.
    The feed rolls 4. located in the reactor vessel 1, respectively, are screwed together with axes that are not shown in the drawing by means of planetary rollers 9 and 10. The upper 2 and lower 3 reactor units, as well as the feed rolls 4, are located in the reactor vessel 1. Outside around the vessel 1, heating elements 11 are arranged to be able to influence the temperature of the melt. An output auger 12 is mounted on the lower central spindle 7, having transporting jumpers to provide pressure as well as vacuum sealing of the degassing chamber 13 from the lower side.
    The drive shaft 5 is based on a thrust bearing 14 and sealed on top by a shaft seal 15. 10: The melt under pressure is fed into the reactor through the feed hole 16 into the annular collector 18, whereby the degassing chamber is simultaneously sealed from above. fifteen
    Under the inlet 16 and approximately in the middle above the connecting seam formed between the planetary block 9 and the inner wall 17 of the vessel / reactor part 2, there is an annular 20 <collector 18, which is most suitable for distribution around the circumference of the charged melt. In addition, the distribution of the melt around the circumference is facilitated by several supply channels 16, 25 which are located around the circumference of the annular collector 18.
    The shaft 5 is made hollow, has an axial bore 19 in the center, to which through a flange 20 not shown 30 ′ is connected, which creates a vacuum. Radial holes 21 are provided in the shaft ϋ, which are connected with the axial longitudinal ότι axis 19, so that a vacuum can be created in the degassing prepress chamber 13.
    In the execution form shown in FIG. 2, the feed rolls 4 are not connected from below. (by planetary rolls, but are based freely in an annular recess 32, which 40 is present in the closing flange 23. A displacing housing 24 is screwed into the lower end of the shaft 8, which is made into an ide cone.
    Arrows 25 indicate the direction of rotation of the planetary rolls 9, and arrows 26 indicate the simultaneous planetary movement around the central spindle 6.
    Positions 27 and 28 indicate the intermediate cavities.
    The melt is pushed through the exit window 29.
    The operation of the reactor is as follows.
    Through the windows 16, the melt, for example, polyethylene, enters the annular channel 18, and thence into the gap between the inner wall 1 7, the planetary roller 9 and the central cylinder 6. The pressurized degassing chamber 13 is sealed from above by means of the melt supplied under pressure.
    Due to the rotational movement of the central spindle 6. having a helical gear rim, planetary rollers 9 with helical gears are run around the inner wall 17 of the housing having a gear cut. The planetary rolls 9 rotate (arrow 25) and simultaneously carry out planetary motion (arrow 26) around the central spindle 6. Through the annular channel 18, the melt enters the intermediate cavity 27 (Fig. 3) and is fed down to the outer side of the feed rolls 4 into the intermediate cavity 28 (fig. 4).
    A certain amount of melt is picked up by the rotating feed rolls 4 and moves into the prepress chamber 13. Thin film layers are formed on the feed rolls 4. The thickness of the film layers in the peripheral part of the feed rolls 4. which is facing the prepress chamber is determined by the distance between the opposing nodes and transporting jumpers of the rolls
    4. Thus, at any time it is possible to bring the proposed thin-film reactor into conformity with the specific viscosity of the material by replacing the feed rolls 4 with other rolls having a different jumper geometry and with a smaller distance between them.
    It is known that it is very difficult to remove gas inclusions from high molecular and very viscous melts. Only if it is possible to obtain extremely thin layers over large areas (the surface area of all peripheral components of the area of the transport rolls, if these surfaces are facing the pre-press chamber), is it possible to quickly and economically remove gas.
    By selecting the geometry of the transport rolls, the conveying effect can be adjusted. The melt is transported down and falls into the second section 3 of the planetary rolls 10.
    By means of a vacuum pump not shown, which is connected to the flange 20 of the prepress chamber, a high vacuum (connection through the hole 19 and the window 21 in the shaft 8) is created in the prepress chamber 13. By means of the melt present in the outlet screw 12, a seal is created from below. The melt is pushed out through the exit window 29 under pressure in order, for example, to be supplied; further to the granulator with a water ring.
    1 837 954 8
    The thin-film reactor is used mainly for polymerization, for polysumming and for polycondensation of plastics, since such processes must remove the gaseous components present in the melt. However, a film reactor can also be used with the opposite effect, for example, if it is advisable to mix the gas with a liquid component, for example, to carry out a specific chemical reaction. In this case, a gaseous substance is supplied under pressure to the pre-pressurized degassing chamber 13, which interacts with a thin liquid layer and is introduced into the liquid due to the rotation of the feed rolls 4.
    权利要求:
    Claims (6)
    [1]
    Claim
    1. Multi-roll film reactor for the continuous production of high molecular weight polymers, thermoplastics, pre-molded plastic melts or other pre-pressed or aerated liquid masses, comprising a housing with a chamber connected to a source of vacuum or overpressure, feed rolls connected and connected to the drive, adjacent to each other, adjacent to one another which are installed with the possibility of interaction, with the fact that, in order to simplify the design and increase reliability in operation, the drive under The feed rolls consists of upper and lower nodes with planetary rolls, which inform the feed rolls about its own axis and planetary movement along the inner walls of the housing, and the feed rolls are kinematically connected with the planetary rolls.
    [2]
    2. The reactor according to claim 1, characterized in that the upper and lower drive units 5 contain kinematically connected central spindles with planetary rollers located at the same distance from each other and made with gear cutting and diameters smaller than 10 than the diameter of the central spindle, and the gear cutting of planetary rolls is kinematically connected with the inner wall of the housing having a gear cut K U '·; ·
    fifteen
    [3]
    3. The reactor according to paragraphs. 1 and 2, with the fact that the spindles of the upper and lower nodes are connected by means of a hollow central shaft, along the lateral surface of which radial holes are made, while at one end the shaft is connected to a source of rarefaction or excess pressure, and the actuator is located above the upper spindle.
    [4]
    4. The reactor according to paragraphs. 1-3, with the fact that the central spindle of the upper drive section is made integral with the hollow and central spindle of the lower section.
    [5]
    5. The reactor according to η. 1, starting with 30 in that in the upper part of the casing there is a melt-feeding device made in the form of an annular collector with several feeding holes.
    [6]
    6. The reactor according to π. 1, characterized in that a feeding screw is installed under the planetary rolls of the lower drive unit, which causes melt sealing with the housing.
    Fig 2 ί
    Figure 4
    Proofreader I. Shmakova
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    同族专利:
    公开号 | 公开日
    EP0440888B1|1993-07-14|
    US5108711A|1992-04-28|
    JP3097760B2|2000-10-10|
    JPH05200279A|1993-08-10|
    DE4001986C1|1991-09-19|
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    CN1063238A|1992-08-05|
    DE59001970D1|1993-08-19|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE4001986A|DE4001986C1|1990-01-24|1990-01-24|
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