• 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:
    The invention relates to a mixer 1, with a horizontally oriented, tubular mixing chamber 2, and a filling opening 7, an outlet opening 8, which is arranged in the axial direction by the Längenmaß L spaced from the filling opening 7, and a rotationally driven shaft 3, which is longitudinal extends through the mixing chamber 2 and radially outwardly into the mixing material 9 projecting mixing 5 carries. To improve this, it is provided that the shaft 3 in front of the outlet opening 8 and adjacent to the outlet opening 8, a region 10 which is free of mixing elements 5, wherein the region 10 has a length which is between 1/5 L and 1 / 2 L is.
    公开号:CH712621A2
    申请号:CH00784/17
    申请日:2017-06-16
    公开日:2017-12-29
    发明作者:Bernhard Bohle Lorenz
    申请人:L B Bohle Maschinen Und Verfahren Ges Mit Beschränkter Haftung；
    IPC主号:
    专利说明:

    Description: [0001] The innovation relates to a mixer according to the preamble of claim 1.
    Generic mixer are known in practice. They are also referred to as "continuous mixers" and are intended to provide as continuous a product flow as possible, leaving the mixer via the outlet opening and filling downstream components of a production plant. Generic mixers are used, for example, in the field of the pharmaceutical industry, where they provide, for example, a product mixture which is processed in a downstream granulator into tablet cores.
    The novelty is based on the object to improve a generic mixer to the effect that this allows for the most cost-effective design as continuous as possible material delivery to the outlet.
    This object is achieved by a mixer with the features of claim 1 Advantageous embodiments are described in the subclaims.
    The innovation proposes in other words, in departure from the usual design of a mixer, the mixing elements not to be provided just before the outlet opening, but in front of the outlet rather to create an area in which the shaft is free of mixing organs. This range is significantly greater than a structurally required range, for example, only a few millimeters or a few centimeters, in which in conventional mixers, the mixing elements are arranged for example in front of an end wall of the mixing chamber. According to the proposal, this free area is designed so long in front of the outlet opening that it extends over 1/5 to 1/2 of the length which has the mixing chamber between the two filling and outlet openings.
    The present proposal is based on the consideration that due to the horizontal orientation of the mixing chamber, the material flows automatically to the outlet anyway, due to the material which is continuously refilled through the filling opening in the mixing chamber, and due to the mechanical movement, the Material is mediated by the mixing organs. The fact that the mixing elements do not extend close to the outlet opening avoids the effect that a mixing device arranged close to the outlet opening, depending on the rotational speed of the shaft, feeds material into the outlet opening in corresponding time intervals. By virtue of the region free of mixing elements, the result is an equalization of this batchwise or intermittent occurring, namely at each revolution of the shaft taking effect by the last in the conveying direction, ie the outlet opening next mixing element. Due to the fact that according to the proposal, this free area is 1/5 to 1/2 of the distance between the filling opening and the outlet opening, a sufficient uniformity is ensured, so that the batchwise or intermittent action of the last mixing element practically not correspondingly thrusting or cyclically up to the outlet Rather, a quasi-continuous material flow is effected at the outlet opening and accordingly a subsequent production device can be fed virtually continuously with material from the proposed mixer.
    Depending on whether the tubular mixing chamber is aligned exactly horizontally or with a slight inclination, for example, downwardly inclined towards the outlet opening, the area free of mixing bodies can be up to 1/2 of the distance between the filling opening and the outlet opening. At a free range of 1/2 length, the conveying effect, which unfolds the last mixing element, at the outlet opening is hardly effective. However, when the mixing chamber is inclined downwardly toward the outlet opening, a steady stream of product can still reliably be produced up to the outlet opening.
    In favor of a thorough mixing of the material, it is advantageous to equip the shaft on a larger portion than only half of the length L, ie the distance between the filling opening and the outlet opening, with mixing organs. Practical experiments have shown that advantageously the area which is free of mixing organs can have a length which is between 1/5 L and 1/3 L. In this way, on the one hand due to the larger number of mixing elements with which the shaft can be fitted, a thorough mixing of the product ensures and on the other hand a sufficiently long free area to the material flow to uniform and the thrusting effect of the mixing elements not effective to the outlet to be let.
    Advantageously, the mixing chamber having said filling opening as the only feed opening for the material to be mixed. Not only by the saving of mixing elements due to the free area, but also by the fact that no further feed openings are provided, a particularly economical design of the mixer is supported.
    Also in a proposed mixer having a free of mixing organs area, so-called auxiliary organs may be provided on the shaft, even in this area, which is free of the mixing organs. The auxiliary organs cause a significantly lower influence on the mix than the mixing elements, in particular they are less by mixing effect, so that they accordingly cause no pulsed or intermittent or batchwise product flow at the outlet opening of the mixing chamber.
    However, in a first embodiment, for example by means of a corresponding inclination, the auxiliary members can impart a slight movement toward the outlet opening to the mix and therefore ensure flow of the mix in the axial direction through the mixing chamber in the area as well no mixing devices are arranged, which otherwise by their design not only by mixing, but also effective to promote the mix.
    However, in a second embodiment, the auxiliary organs can also be consciously designed in the opposite direction away from the outlet opening, towards the filling opening, in order to bring about a kind of material jam, so that the mixture is below a certain accumulated amount of mixing material Overcoming the auxiliary organs evenly flows to the outlet opening. In this way, for example, a too low filling level of the mixed material in the mixing chamber can be avoided, which otherwise could hinder a uniform flow of material.
    And finally, it may be provided in a third embodiment, that the auxiliary organs deliberately cause no conveying effect in the axial direction through the mixing chamber, but only serve to loosen the mix, to avoid in this way that the mix in the mixing organs free region of the mixing chamber adheres to the wall of the mixing chamber and due to a so-called Stick- / SIip effect jerky, so intermittently or cyclically passes to the outlet opening of the mixing chamber.
    Embodiments of mixers are explained in more detail below with reference to the purely schematic representations. It shows
    1 shows a vertical longitudinal section through a first embodiment of a mixer,
    2 is a plan view of a basically similar, but conventionally designed mixer,
    Fig. 3 is a schematically further simplified longitudinal section, similar to FIG. 1, by a second embodiment, and
    4 shows a partial cross section through the mixer of FIG. 3.
    In the drawings, comparable components are identified by the same reference numerals, even if they can be configured differently in different embodiments. 1 denotes a mixer in each case, wherein FIG. 1 shows a proposed mixer in a view which corresponds to a vertical section along the line 1-1 of a conventional mixer in FIG. 2 except for a few design differences to be explained.
    The mixer 1 has a tubular mixing chamber 2, axially centered, a shaft 3 extends through the mixing chamber 2. This shaft 3 is rotated by a motor 4 in rotation. The shaft 3 carries a plurality of mixing elements 5, which are also referred to as paddles, wherein on the shaft 3 a plurality of receptacles 6 is provided, to each of which a mixing element 5 or another component can be attached to the shaft 3.
    The mixing chamber 2 has a single filling opening 7 as a charging opening in order to introduce good to be mixed in the mixing chamber 2. From the filling opening 7, the material passes axially in the longitudinal direction through the mixing chamber 2 to an outlet opening 8. The distance between the filling opening 7 and the outlet opening 8 has a length dimension L. The good, which has been filled through the filling opening 7 in the mixing chamber 2, is shown hatched in Fig. 1 and marked 9. It can be seen that, due to the single filling opening, the material 9 is not uniformly distributed over the entire length of the mixing chamber 2 or over the entire length L. Rather, the filling level of the material 9 in the mixing chamber 2 decreases continuously from the filling opening 7 to the outlet opening 8. First, an intensive mixing of the material 9 by means of the mixing elements 5. Subsequently, however, there is an area 10, within which the shaft 3 is free of mixing elements 5. The Good 9 is promoted in this area 10 only by the Nachrückende Good 9, with the influence of the last mixing element 5, which is the outlet opening 8 next adjacent, barely noticeable until the outlet opening 8 out and so far the intermittent or intermittently Influence of this mixing element 5 on the material 9 does not lead to a cyclic or batchwise output of the material 9 from the mixer 1. Rather, a virtually continuous flow of material is effected at the outlet opening 8.
    Fig. 2 shows a plan view of a basically similar mixer 1, which differs in the following respects from the proposed, shown in Fig. 1 mixer 1: In the conventional mixer according to Fig. 2 are mixing elements 5 to close provided on the outlet opening 8 zoom on the shaft 3. The last two mixing elements 5 in Fig. 2 are shown crossed to make it clear that these two mixing elements 5 in the proposed mixer 1 according to FIG. 1 are not present.
    Second, the mixer of Fig. 2 differs from the proposed mixer 1 according to Fig. 1 in that in addition to the filling opening 7, two further openings 11 are provided at the top of the mixing chamber 2, softened in the proposed embodiment of the mixer of FIG 1 can be dispensed with.
    Finally, in the case of the conventional mixer according to FIG. 2, the shaft 3 is also provided with elements in the area of further receptacles 6. Apart from the mixing elements 5, the mixer of FIG. 2 also has so-called auxiliary organs 12 which, unlike FIG the mixing means 5 are designed much less effective mixing.
    权利要求:
    Claims (8)
    [1]
    1. mixer (1), with a horizontally oriented, tubular mixing chamber (2), and a filling opening (7), an outlet opening (8), which is arranged in the axial direction by the length dimension L of the filling opening (7) spaced, and a rotary driven shaft (3) which extends longitudinally through the mixing chamber (2) and radially outwardly into the mixing material (9) projecting mixing elements (5) carries, characterized in that the shaft (3) in front of the outlet opening (8 ) and adjacent to the outlet opening (8) has a region (10) which is free of mixing elements (5), the region (10) having a length which is between 1/5 L and 1/2 L.
    [2]
    2. Mixer according to claim 1, characterized in that the region (10) has a length which is between 1/5 L and 1/3 L.
    [3]
    3. Mixer according to claim 1 or 2, characterized in that the mixing chamber (2) the filling opening (7) as a single feed opening for the material to be mixed (9).
    [4]
    4. Mixer according to one of the preceding claims, characterized in that the mixing chamber (2) to the outlet opening (8) extends downwardly inclined.
    [5]
    5. Mixer according to one of the preceding claims, characterized in that the shaft (3) in addition to the mixing elements (5) also carries at least one auxiliary member (12), which is designed to be less effective in mixing compared to a mixing element (5).
    [6]
    6. Mixer according to claim 5, characterized in that in the region (10) which is free of mixing elements (5), an auxiliary member (12) is arranged.
    [7]
    7. Mixer according to claim 6, characterized in that the auxiliary member (12) is designed to promote effective, such that it conveys the Good (9) a movement in the direction of the outlet opening (8).
    [8]
    8. Mixer according to claim 6, characterized in that the auxiliary member (12) is configured ineffective, such that it does not convey the goods (9) in the direction of the outlet opening (8).
    类似技术:
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    同族专利:
    公开号 | 公开日
    DE202016103469U1|2016-09-09|
    US20180001287A1|2018-01-04|
    FR3053261A1|2018-01-05|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US2572063A|1947-06-06|1951-10-23|Gen Electric|Pugmill|
    US4509860A|1983-05-03|1985-04-09|Lasar Manufacturing Co.|Dual action mixer|CN108816142A|2018-07-08|2018-11-16|合肥晶诺知识产权信息服务有限责任公司|A kind of equipment improving liquid material stirring and mixing effect|
    法律状态:
    2020-08-14| AZW| Rejection (application)|
    优先权:
    申请号 | 申请日 | 专利标题
    DE202016103469.8U|DE202016103469U1|2016-06-29|2016-06-29|Mixer with single filling and continuous product dispensing|
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