• 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:AT510191A2
    申请号:T10882011
    申请日:2011-07-26
    公开日:2012-02-15
    发明作者:Hans-Walter Hefner
    申请人:Automatik Plastics Machinery；
    IPC主号:
    专利说明:

    • «4« «•»
    Automatic Plastics Machinery GmbH
    Device for drying granules
    The invention relates to a device for drying granules, e.g. made of a plastic material, with a housing and a movement embossing device located therein, which grar.riatkörnerr. and a process fluid, e.g. Water, each local imparting a different direction of movement, so that the process fluid, in which the granules are originally, there from the granules in a drainage area with at least one dewatering sieve with Entwässungssieböffnungen with a size smaller than the granules, by passing from a Siebvorderseite is separable to a screen back, according to the preamble of claim 1.
    In general, such devices, for example, as a centrifugal dryer under the product name CENTRO or as Strönungstrockner under the product name AERO from the company Automatik Plastics Machinery GmbH offered and distributed. To classify grain sizes are so far still additional Klassiereir.richtungen, such as rear-facing screening devices with different hole sizes required, which means a design overhead, claimed additional Raun and increased due to the additional appropriate equipment on the other hand, the maintenance and energy consumption of the entire system.
    It is the object of the present invention to provide a device for drying granules from a melt, which overcomes the disadvantages of the prior art, and in particular to provide a device and a method which (s) in a structurally simple way in addition to the pure drying a automated and reliable classification possible.
    This object is achieved with a device for drying granules with the features of claim I. Preferred embodiments of the invention are defined in the subclaims.
    The device according to the invention for drying granules has a housing and a movement embossing device located therein which locally imparts a different direction of movement to the granules and a process fluid, so that the process fluid, 1 in which the granules are originally located, there, d. H. into the housing, from the granules in a drainage area with at least one dewatering screen with Entwässerungssieböffnungen with a size smaller than the granules by means of passage from a Siebvorderseife to a Siebrückseite is separable. The terms Siebvorderseite or Siebruckseite thereby designate the two sides of the Siebfiäche, namely the side on which the Siebgut remains, or the back of the screen surface, in the region of the process fluid and the objects, d. H. Granules, which are smaller than the screen openings, pass through the screen openings after passing through. According to the invention, however, the apparatus is not only equipped or designed for drying granules, as described above, but the apparatus additionally has a classifying area with at least one additional sizing screen with sizing apertures. a size such that through these sizing apertures the granules of a desired size pass from a wire face to a screen back side (same definition as above), the sizing screen being arranged so that the granules are imprinted with them, preferably also through the application embossing means Moving direction there pass through the Klassiersieböffnungen. Kit the additional classification region according to the invention, in particular in a compact housing of erfindur.gsgemäßen device both the separation of Granniatkörnern and Prozeßfiuid and simultaneously or subsequently the classification of the granules in different sizes easily and inexpensively.
    The classifying region may in particular preferably be arranged downstream of the cooling fluid flow with the granules therein or downstream of the main flow direction of the stream of granules already separated from the cooling fluid and / or in particular in the same housing of the device according to the invention as the drainage section for separating the cooling fluid from the granules , from e.g. above or below the drainage area.
    According to a preferred embodiment, the Bewegungsaufprägungseinrichtung invention may for example be a rotor with rotor blades, which rotatably driven, z. B. drivable by a motor, is arranged in the housing, wherein the Entwässerungssieb and the at least one additional sizing at least partially disposed around the rotor around and wherein the rotor is in the region of the respective Siebvorderseite and the housing in the region of the respective SiebrUckseite located. It is thus an essentially concentric arrangement with the rotor in the interior and arranged around it the arrangement of sizing screen and dewatering sieve (one above the other particularly). · T · φ · · · · · · · * · · · · · prefers first the sizing sieve unc then the Entwässerungssieb) and outside with the surrounding. Envelope of the housing. Such a construction is particularly compact and inexpensive to produce.
    If a rotor is used as a movement-imparting device, then the rotor arrangement can correspond to the conventional construction of a centrifugal dryer, as already used, for example, under the product name CENTRO of the company Automatik Plastics Machinery GmbH.
    According to a further preferred embodiment, the Bewegungsaufprägungseinrichtung invention can also be at least one air nozzle or more air nozzles, which is / are such that they each from the Siebvorderseite the Entwässerungssiebs and the Klassiersiebs ago an air flow and through the at least one Entwässerungssieb and the at least one create / create additional sizing screen. The corresponding air flow thereby reduces the necessary use of moving parts (eg, a rotor), which can make the device according to the invention even more effective, since the corresponding flow of air or of the corresponding air flow is of the same type. Gas, in particular, for example, inert gas such as nitrogen, while offering an additional drying effect for the granules.
    In addition to supporting the separation process of cooling fluids and granules or for supporting the separation process of granulate bodies of different sizes, according to the invention at least one respective irrigation fluid nozzle may be provided on a respective screen-printing side of the dewatering screen and / or the sizing screen in the dewatering area and / or classifying area is arranged aligned against the pronounced movement direction of the process fluid or the granules. Semit can "blown" the opening again in case of possible clogging or an imminent clogging of the screen openings of the dewatering screen and / or the sizing sieve " be by a flushing fluid, z. As water or air, directed against the sieve direction of the screen passage pushes the zusetzenden elements against the actual Siebwirkungsrichtung. Thus, at any time a safe operation in a simple way according to the invention can be achieved additionally improved.
    In order to ensure a possible spatial separation in functional terms of the drainage area and the Klassierbereichs and in particular to additionally be able to avoid that the cooling fluid may be from the drainage area even more in the Klassierbereich with. Conversion, according to a preferred embodiment of the invention, can be carried out on a respective rear side of the dewatering sieve ur.d / or of the 3 ψ * * · • ·
    Klassiersiebs there the drainage area and the Klassierbereich be separated from each other fluid-tight over a partition. This improves the dewatering effect of the inventive. Device further and prevents particularly reliable that the classified granules can not get back into the drainage area, but can be removed via an outlet from the Klassierbereich from the housing. Also between an outlet area for granules with oversize or agglomerates and the classifying area a corresponding partition wall can be provided, so that no granules with oversize or agglomerates reach the area of the sieve rear side of the classifying sieve and the granules with oversize or agglomerates particularly reliable over the outlet area of Housing can be removed.
    In order to remove particularly still remaining on the granules residual cooling fluid particularly effective, an additional Gegenstromdnse be provided, by means of which an air counterflow in the Bewegungsaufprägungseir.cichtung against the granules locally impressed direction of movement can be generated.
    The device according to the invention with the corresponding technical features uses the impressed forces or force components on the granules or the process fluid, impressed by the movement embossing device, thereby forcibly shaping a movement of the granules or of the process fluid in the direction of the drainage screen openings or the classifying screen openings , so that the granules of a certain size or the process fluid are separated from each other by the passage through the corresponding screen openings of other granules or granules and process fluid. In particular, the force component used in this case may be a centrifugal force component which centrifugally moves the process fluid or the granules in an otherwise impressed curve movement, in particular a spiral movement, namely by the movement embossing device.
    The invention will be described in more detail below with reference to the embodiments explained by way of example. In the figures shows:
    1 is a schematic Lär.gsschnittansicht a section of a
    Apparatus for drying granules according to a first preferred embodiment of the invention; and Fig. 2 is a schematic longitudinal sectional view of a detail of a
    Apparatus for drying granules according to a second preferred embodiment of the invention. 4
    • * »4 • *
    Fig. 1 shows a schematic longitudinal sectional view of a section of an apparatus for drying granules according to a first preferred embodiment of the invention. This device has a housing 1. In this housing 1, there is provided a rotor 2 with rotor blades 8 as a movement imparting means, which granules the granules and a process fluid due to the different 'acting centrifugal force components due to e.g. the differently acting inertial forces, each local imparting a different direction of movement. The process fluid with the granules therein is Uber an inlet (in Fig. 1 bottom left) for inventive. Device supplied in the housing 1 and then transported via the rotor 2 with the rotor blades 8 in a substantially helical settlement further up, the process fluid, in which the granules are originally located there (in Fig. 1 in the lower third of the housing 1) is separated from the granules in a drainage region radially outward. The dewatering area is formed by a dewatering tower 4 having drainage screen openings 5 smaller in size than the granular grains, where the process fluid is forced outwardly through the dewatering openings 5 by the centrifugal movement, but the granular grains do not pass therethrough and thus continue to spiral in the housing 1 after just beget egt. The rotor 2 is driven, for example, by an electric motor (indicated in FIG. 1 in the upper region of the device).
    Following the drainage screen 4 arranged around the rotor 2 with the rotor 2 in the region of the screen side and the housing 1 in the region of the screen back, a kiassier section according to the invention joins with at least one additional sizing screen 6 with sizing screen openings 7, the sizing screen openings 7 being of such a size have that through this (only) pass the Granuiatkörner having a desired size of the local Siebvorderseite to the local Siebrückseite, wherein the Klassiersieb 6 is arranged so that the Granuiatkörner pass there with the imprinted direction of movement through the Klassiersieböffnungen 7. According to the embodiment as shown in FIG. 1, the additional sizing screen 7 adjoins immediately above the dewatering screen 4 and, like the dewatering screen 4, is also arranged concentrically around the rotor 2 in the housing 1. As can be seen in FIG. 1, an outlet is provided on the right in the housing 1 in the housing 1 in the lower region of the classifying region, through which the correspondingly sized granules of the desired size can emerge. 5 ····································································································. · * * * * »· *» · T
    Above the classifying area, in the apparatus according to the representation of FIG. 1, another area adjoins, in which the oversize granules, agglomerates or residual granules of desired size, which were not conveyed in the kiassier area, are transported through the rotor 2 and over there an outlet labeled right in FIG. 1 can be removed from the housing. In this region of the discharge an additional countercurrent nozzle 11 is provided, by means of which an air countercurrent in the direction of movement against the of the Bewegungsaufprägungseinrichtung, namely the rotor 2, impressed direction of movement of the granules can be generated. This increases the drying performance of the device according to the invention to a particular extent.
    At the respective Siebrückseiten, d. H. at the radially outer regions in the housing 1 in the region of the dewatering screen 4 and the sizing sieve 6, the dewatering area and the classifying area are separated from each other in a fluid-tight manner via a partition wall IC which is arranged circumferentially and inclined towards a corresponding outlet opening, which, inter alia, ensures that the classified granules can not fall down again into the drainage area, but are discharged via the outlet opening on the right in FIG. 1 from the classifying area. Also up to the outlet for the granules with oversize or agglomerates of the classifying is separated by a corresponding, also inclined partition, so that no granules with oversize or agglomerates in the region of Siebrückseite the Klassiersiebs 6 and the granules with oversize or agglomerates there over the , Ausiassbereich can be dissipated. The Trenr.wand / partitions may / may preferably also be configured sloping frustoconical radially outward to the housing 2.
    In the classifying region, rinsing fluid nozzles 9 are provided on the respective rear side of the screening sieve 6, which are arranged there aligned against the impressed direction of movement of the granules. in the
    Dewatering area Spülfluidciüsen 12 are provided on the respective Siebrückseite the Entwässerungssiebs 4, which are arranged there aligned against the imprinted direction of movement of the process fluid or the granules. The rinsing fluid nozzles 9 can in particular blow in air or an inert gas preferably periodically during cleaning cycles, preferably blowing radially inwards onto the classifying sieve 6 arranged radially around the rotor 2, so that possible blockages of the classifying sieve openings 1 can be blown off. The flushing fluid nozzles 12 may in particular inject water or another cooling fluid preferably periodically during cleaning cycles, preferably radially inwardly to the radially around the rotor 2 6 6
    inject arranged drainage sieve 4, so that possible blockages of the Entwässerungssieböffnungen 5 can be washed away.
    Fig. 2 shows a schematic longitudinal sectional view of a section of an apparatus for drying granule cores according to a second preferred embodiment of the invention. In the execution forum. the device according to the invention as shown in FIG. 2 is not the centrifugal force imposed by the rotational movement of the rotor used for drying and classification according to the invention, but an air flow or air streams from air nozzles 3, which are arranged in a housing 1 accordingly. According to the embodiment of Fig. 2, the Frczessfluid and the granules therein are supplied from the bottom left of the housing 1 and immediately after entry into the housing with an air flow applied, respectively from the Siebvorderseite a Entwässerungssiebs 4 with Entwässur.gssieböffnuncen 5 on the granules and the process fluid acts. Thus, in three order, steering stages as shown in FIG. 2 (there are also several deflection be known) the Granulatkörr.er be guided through the corresponding conduit system in the housing 1, wherein in each case at the deflection points, the air nozzles 3 and the Entwässerungssiebe 4 are provided so that there the process fluid can be stripped from the granules and expelled through the appropriate sieve openings. In the lower region of the housing 1, an opening with a pipe is provided, via which the process fluid can be discharged. In the upper area of the housing 1, in addition to the described drainage area, the Xiassier area is arranged with a Klassiersieb 6 with Klassiersieböffnungen 7 of a size that pass through these Klassiersieböffrungen 7 granules with a desired size of a local Siebvorderseite to a Siebrückseite and then down through an outlet from the housing 1 are led out. The granules thereby a movement is impressed by an air nozzle 3 on the Siebvorderseite the Klassiersiebs 6 accordingly. At the top right in the illustration of FIG. 2, an outlet from the housing 1 is shown, which is connected to the line system in the housing 1. About this outlet granules can escape with oversize sizes of the housing 1 and collected there.
    With both embodiments of the device according to the invention, simple drying and simultaneous or immediately subsequent classification of granules is possible. 7
    权利要求:
    Claims (7)
    [1]
    Automatik Plastics Machmery GmbH Claims 1. Device for drying granules with a housing (i) and a movement embossing device (2, 3) which locally impresses a different movement direction on the granules and a process fluid, so that the process fluid, in which the granules are originally located, there from the granules in a drainage ir.it at least one dewatering sieve (4) with Entwässerungssiebcffnungen '5) having a size smaller than the granules, is separated by passage from a Siebvorderseite to a Siebrückseite, characterized in that a classifying area with at least one additional sizing screen (6) is provided with sizing openings (7) of a size that through these sizing openings (7) passes through the granules of a desired size from a screen front to a screen back with the classifying screen (6) arranged such that the granules pass through the classifying screen openings {7) with the direction of movement impressed on them.
    [2]
    2. Apparatus according to claim 1, characterized in that the Bewegungsaufprägungseinrichtung (2, 3) is a rotor (2) with rotor blades (8) which is rotatably driven in the housing (1), wherein the Entwässerungssieb (4) and the at least one additional sizing screen (6) is arranged around the rotor (2) at least in sections, and 'wherein the rotor (2) is in the region of the respective screen front side and the housing (1) is in the region of the respective screen back side.
    [3]
    3. A device according to claim 1, characterized in that the Bewegungsaufprägungseinrichtung (2, 3) at least one air nozzle (3) which is aligned so that they each from the Siebvorderseite the Entwässerungssiebs (4) and the Kiassiersiebs (6} forth Air flow to and through the at least one dewatering screen (4) and the at least one additional sizing screen (6). 8 • • * * * «A ft * · ·


    [4]
    4. Device according to one of claims 1 to 3, characterized in that iir. Kiassierbereich at least one Spülfluiddüse (9) is provided on a respective Siebrückseite the Kiassiersiebs (6), which is arranged there aligned against the imprinted direction of movement of the granules.
    [5]
    5. Device according to one of claims 1 to 4, characterized in that in the drainage area at least one Spülfluiddüse (12) is provided on a respective Siebrückseite the Entwässerungssiebs (4), which is arranged there aligned against the imprinted direction of movement of the process fluid or the granules ,
    [6]
    6. Device according to one of claims 1 to 5, characterized in that at a respective rear side Sieberungssiebs Sieve (4) and / cder of the Klassiersiebs (6) there the drainage area and the Klassierbereich are separated from each other in a fluid-tight manner via a partition wall (10).
    [7]
    7. Device according to one of claims 1 to 6, characterized in that an additional countercurrent nozzle (11) is provided, by means of which an air countercurrent in the Bewegungsaufprägungseinrichtung (2, 3) against the granules locally impressed movement direction can be generated.

    July 6, 2011 PUCHBB 'A-1Q10W! Phone 5 9
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    法律状态:
    2020-03-15| MM01| Lapse because of not paying annual fees|Effective date: 20190726 |
    优先权:
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    DE201010032350|DE102010032350A1|2010-07-27|2010-07-27|Device for drying granules|
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