EP0593955B1 - Vorrichtung und Verfahren zum Reinigen eines im wesentlichen in Granulatform vorliegenden Korngemenges - Google Patents

Vorrichtung und Verfahren zum Reinigen eines im wesentlichen in Granulatform vorliegenden Korngemenges Download PDF

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Publication number
EP0593955B1
EP0593955B1 EP93115763A EP93115763A EP0593955B1 EP 0593955 B1 EP0593955 B1 EP 0593955B1 EP 93115763 A EP93115763 A EP 93115763A EP 93115763 A EP93115763 A EP 93115763A EP 0593955 B1 EP0593955 B1 EP 0593955B1
Authority
EP
European Patent Office
Prior art keywords
scatter plate
mixture
particles
granules
housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP93115763A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0593955A2 (de
EP0593955A3 (de
Inventor
Hans Heckel
Dieter Dipl.-Ing. Müller
Uwe Dipl.-Ing. Schwanke
Volhard Dipl.-Ing. Sorgatz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Waeschle Maschinenfabrik GmbH
Original Assignee
Waeschle Maschinenfabrik GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19924235260 external-priority patent/DE4235260A1/de
Priority claimed from DE19934302857 external-priority patent/DE4302857A1/de
Application filed by Waeschle Maschinenfabrik GmbH filed Critical Waeschle Maschinenfabrik GmbH
Publication of EP0593955A2 publication Critical patent/EP0593955A2/de
Publication of EP0593955A3 publication Critical patent/EP0593955A3/de
Application granted granted Critical
Publication of EP0593955B1 publication Critical patent/EP0593955B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B11/00—Arrangement of accessories in apparatus for separating solids from solids using gas currents
    • B07B11/06—Feeding or discharging arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
    • B07B4/02—Separating solids from solids by subjecting their mixture to gas currents while the mixtures fall
    • B07B4/025—Separating solids from solids by subjecting their mixture to gas currents while the mixtures fall the material being slingered or fled out horizontally before falling, e.g. by dispersing elements

Definitions

  • the invention relates to a device for cleaning one essentially in granular form and particles grain batch containing different sizes from just these particles according to the preamble of claim 1 and a process for cleaning this grain mixture after Preamble of claim 7.
  • the fine dust particles are in contrast only up to a maximum of approx. 50 ⁇ m in size.
  • Larger particles, sometimes also called angel hair or bird nests, the disc can be ball-shaped or spherical and have a diameter of approx. 2 cm can have up to 10 cm, occur especially with pneumatic Funding on.
  • Granules conveyed through pipelines becomes, rubs against the pipe, it heats up, forms adhering threads or foils that tear off or peel off.
  • the length of such threads or hairs is extreme different, each can only be a fraction of a millimeter be long, but to be meter-long due to positive locking Form or assemble into balls.
  • In the case of out Batches of particulate matter receive special value a classification with great discriminatory power, so this is in second case, which is the separation of the granules from much smaller dust particles and substantially larger ones Particles is not important.
  • Such classifiers are provided for fine fractions of coarse fractions to separate, a separation of fine and substantial larger particles at the same time in order to clean purified granules received, however, is not possible.
  • the separation into several grain size fractions with the help of multi-component classifiers (see e.g. DE-C-371 504) possible and with great selectivity, yes this is associated with considerable structural effort.
  • the invention is based on the object, a To provide device and a method, whereby in the course Both fine parts and coarse parts of the same viewing process Portions of one essentially in granular form Batch of grain can be separated, so that the granules free of these shares. This is achieved through realization the characterizing features of claim 1 or of claim 7.
  • the already pre-cleaned one loaded with particles of smaller size Batch hits the spreading disc in the flow of gravity, which is preferably provided with a hood, which in particular cone-shaped with a recess for that on the Scatter plate flowing batch is formed.
  • a hood which in particular cone-shaped with a recess for that on the Scatter plate flowing batch is formed.
  • Such Hood causes bouncing off of the spreading disc if necessary Batch cannot emerge again against the direction of the fall.
  • the size of the typical granule diameter depends on the grain mixture to be cleaned. So is for Polyester or polyamide granules a gap height of 8 to 15 mm is an advantage.
  • the spreading disc itself is designed accordingly, preferably in the form of one on a truncated cone sitting cone with a larger angle of inclination against the horizontal as the angle of inclination of the truncated cone, so that ricocheting grain within the bounded by the hood Area remains and only from the gap between the spreading disc and Hood can escape.
  • the edge area of the spreading plate is preferably horizontal and ring-shaped.
  • the inlet opening for the cleaning gas is preferably which are in particular in the form of an annular channel and is therefore uniform over the circumference of the device Flow possible, just below the impact device provided, particularly in terms of construction advantageous measure.
  • a central inlet channel for the cleaning gas, which feeds the gas from below is also possible, but would be the height for such a cleaning device enlarge.
  • a funnel which if necessary has a wall raised on one side, so that the incoming batch is safely captured.
  • This funnel can unilaterally be attached to the housing inner wall, this not only from pure fastening purposes happens, but at the same time the Possibility offers that the cleaning gas flowing upwards optionally divided into at least two sub-streams, with which the opportunity is given to both turbulent and approximate laminar (hereinafter referred to as "smoothed") flow behavior to reach.
  • Baffles on the inner wall the housing are provided, serve to calm the after cleaning gas flowing above in the zone above the spreading disc and below the restraint.
  • baffles only arranged on one side, so only a partial flow can be targeted of the cleaning gas are smoothed. This partial flow can then optionally be directed so that it is the restraint flows through and retained larger ones Particles due to the relative to the granules relative large inflow resistance of these particles.
  • larger expansion particles are also carried away by the calming current while the granulate-grain mixture in his case essentially is not hindered.
  • the area above the spreading disc designed so that the flow rate of the upward flowing cleaning gas is lowered.
  • the restraint preferably consists of one another parallel, vertical walls so that the larger particles, which are present, for example, as angel hair or bird nests, get stuck on the top edges, while the Grain batch containing particles of smaller size between them Walls can fall through.
  • This restraint that is also referred to as a thread comb, preferably has a slant in top edges aligned with the solder so that retained, particles resting on the upper edges in the stream of Cleaning gas can slide and be carried by it.
  • the guide device for that entering the housing of the device Batch that skipping the restraint through the granules should prevent, in the form of swiveling Flaps be formed with their free side up to reach the top of the restraint so that restrained larger particles under these flaps as a result of other, retained particles can slip away.
  • the guide device can be a function of from the amount of, for example, from a storage vessel into the Housing incoming product include actuatable dosing, which is arranged on the storage vessel.
  • Fig.1 is an inventive device for cleaning one essentially in granular form and particles of different sizes containing grain batch 1 from just from these particles.
  • This device is as follows referred to as granule cleaner.
  • the granule cleaner has a housing 5 with an inlet 11 for the batch 1, which contains coarse and fine impurities.
  • At the bottom End of the housing 5 is an outlet 12 for the contaminants cleaned granules 18 are provided. Cleaning gas occurs flows through an inlet opening 13 into the housing 5 upwards, against which gravity flows through the housing 5 moving batch 1, and leaves the housing through the outlet opening 7.
  • a restraint 2 made up of several to each other parallel, vertical walls on a chute 2 ' consists.
  • the distance between the walls depends on the size of the granules from; in the case of a granule cleaner which is suitable for polyester or Polyamide granules is provided, it is approximately 15 mm.
  • Such a restraint device is also referred to as a thread comb.
  • the coarse impurities 3 are after and after under the rotatable flaps 15 as a result of pushing other impurities pushed through by the cleaning gas, that carries the fine impurities with it of the high flow resistance compared to that of the granules taken away by the gas and carried away.
  • the granulate 4 loaded with the fine particles falls through the thread comb 2 through to the spreading plate 6, by a recess 17 in a seated on the spreading plate 6 Cover hood 16.
  • Spreading plate 6 and hood 16 are over narrow Connectors (not shown) spaced from each other, so that a gap 8 of about 10 mm remains free between the granules can leak.
  • this gap width is not critical.
  • the spreading disc is set in rotation by a motor 21 the wave of which he is directly attached, as well as the one connected to it Cover 16.
  • the circumferential speed of this spreading plate is appropriate approximately 6 to 16 m / s, preferably 8 to 14 m / s, based on the average diameter of the spreading gap 8
  • spreading plate 6 and cover 16 have approximately the shape a double cone, so that the granules always against the gap 8 is reflected.
  • the spreading plate 6 is preferably in Form of a truncated cone seated on a horizontal ring 6c 6b formed, which carries a cone 6a. The angle of inclination of the cone 6a against the horizontal is larger than that of the truncated cone 6b.
  • the granules are opposed in the form of a homogeneous diffusing curtain 9 thrown a baffle ring 10, adhering, dusty Impurities are knocked off and the granules are reflected against the outlet opening 12.
  • the impact ring 10 has the shape of a truncated cone shell; this and the corresponding Selection of the rotational speed of the spreading plate 6 causes that the granules are not destroyed, such as this this is the case with loading plates with impact elements would be (for example, according to an embodiment such as is described in EP-B1-237 641 and that of smashing of agglomerates).
  • the cleaning gas passes through the annular channel-shaped inlet opening 13 just below the impact ring 10 in the housing a, flows through the granules reflected by the impact ring 10 and the scatter curtain 9, where it is the knocked-off fines, Remains of fine particles and other dust-like particles that are still carried along Impurities.
  • the cleaning gas then flows in the area between cover 16 and housing inner wall high, the cross section of this area increasing towards the top and the flow rate decreases. As a result of Rotation of the spreading plate 6 and the cover 16 is also gives a swirl to the cleaning gas.
  • Baffles 22 on the Housing inner wall are arranged above the spreading plate 6, serve to calm the upward flowing gas stream threads in this area, possibly through the thread comb 2 could fall through with the dust-laden granules, as well as larger impurities pushed off the thread comb. This coarse and fine impurities with it bearing, the cleaning gas leaves the housing 5 through the outlet opening 7.
  • Fig.2 shows an alternative to Fig.1, in which both the guidance of the grain mixture as well as the gas flow is optimized.
  • the right part of Fig.2 is a central longitudinal section of the granule cleaner
  • the left Part of Figure 2 is a view of the granule cleaner after removal the housing outer wall illustrated.
  • the contaminated batch 1 is introduced into the housing 5 from a feed container 20.
  • the feed container 20 is rotatable about an axis 23 stored. With increasing filling of the feed container 20 Via a cutting edge 25, a slide 19a mounted at point 26 always open. This ensures that the thread comb 2nd is always fed from a bed, via the thread comb jumping granulate is avoided.
  • the dust-laden granulate runs through the thread comb 2, a one-sided attached to the inner wall of the housing 5 somewhat higher trained funnel 29 causes the granules securely through the recess 17 of the cover 16 reaches the spreading plate 6.
  • the thrown from the spreading plate 6 Scattering curtain 9 (Fig. 1) meets the impact ring 10, dust adhering to the granules is knocked off and from entrained with the cleaning gas.
  • the cleaning gas passes through the ring channel 13 in the housing 5, with him from guide vanes 28 an opposite to the direction of rotation of the spreading disc 6 Swirl is given.
  • the gas flows through, as described above, granules reflected against the outlet opening 12 and the scatter curtain, knocked off and carried along by the granulate Sweeping dust with it.
  • the collecting funnel 29 Since the collecting funnel 29 its raised side attached to the inner wall of the housing 5 the gas flow is there after being at the top of the Cover 16 has flowed along, on both sides of the Flow up funnel 29.
  • the thread comb projecting into the housing 5 2 is from a gas stream smoothed by baffles 22 flows from below, which the larger particles, like angel hair and bird nests. Because the collecting funnel 29 is connected to the housing inner wall, there is the possibility the gas streams flowing up on its sides steer that they no longer go through thread comb 2, and only the partial flow that is on the free side of the collecting funnel 29, calmed by the guide plates 22, flows high, flows through the thread comb 2.
  • the guide vanes 28 should preferably be designed to be adjustable be so depending on the rotation speed of the Scatter plates 6 - and possibly the flow speed the gas - the gas can be given such a swirl that optimized the difference in speed between gas and granulate becomes.
  • FIG. 3 shows an embodiment of the granule cleaner corresponding to FIG. That from the - here firmly arranged feed container 20a - outflowing batch 1 is by the as a pendulum flap 19b trained metering element. The bigger the Filling the feed container 20a, the wider the swing flap opens 19b, which can be reset via a weight 30. In order to is achieved in accordance with the arrangement shown in FIG. 2, that the thread comb 2 is always loaded from a bed becomes.
  • the air can now either in the one hand in parallel Spreading plate 6 enclosing space and on the other hand in the in the mentioned manner, having the thread comb Flow into chamber 105. However, it preferably flows through the 4, both rooms one after the other.
  • a transfer pipe 32 is provided, which over the air paths 13 and 9 inflowing air at 10 loaded with dust receives and the chamber 105, preferably in the area of Pouring channel 2 '.
  • the pouring channel 2 ' can optionally be fork-shaped at its free end, so that the prongs of this fork are formed by the vertical walls 2 and the floor in between recedes a little, so that air flows from below between the vertical walls 2 and any threads from the top of the walls 2 can tear up freely, whereupon the air (or a Inert gas) flows out again at 7.
  • the one Pre-separation restraining device 2 as one 5 is a restraint device 102, which in itself is also granular for a pre-separation Suitable for fine ingredients and therefore more universally applicable is. It is advantageously a concentric to the axis of rotation of the spreading plate 6 arranged feed hopper 205 provided with a vertical axis, that with a tripod support 41 is held stationary in the jacket 10 '. Above this Feed funnel 205 is a construction with a Guide cone 102 ', which together with a conical metering valve 33 and a valve seat 33 'is similar to that shown in DE-A-29 29 672 is shown. However, the guide cone forms 102 'together with an air guide ring 102' 'a pneumatic one Restraint device 102.
  • the air guide ring 102 ′′ closes at the bottom with a lower, here funnel-shaped, surface 34 with an optionally adjustable gap 35 to the feed hopper 205 in order to forward a message via the Gap 35 penetrating partial flow 36 through the inlet 13th to cause air supplied.
  • Partial stream 36 also other constructions, such as, if necessary adjustable nozzles distributed over the circumference of the surface 34 or the like. be provided.
  • the lower surface 34 is not necessarily funnel-shaped must be, but possibly also cylindrical or can be conical.
  • the guide cone 102 'after provided at the bottom with a counter cone 37 forms advantageously together with the surface 34 the even distribution favoring air duct between these two surfaces, the one from the slot 35 in air that has entered the relatively wide feed funnel 205 initially accelerated again and evenly over the circumference is distributed before the top, preferably approximately parallel to the guide cone 102 'extending surface 38 reached and from it is deflected over the surface of the guide cone 102 'in such a way that it sweeps across the surface of the guide cone 102 '.
  • the guide cone 102 has a function that is capable of technology has no role model. Because on the one hand is with the conical surface is imperatively connected that the radially inside trickling down through the valve 33, 33 ' Material flow due to the increasing radially outward Tapered surface thinned more and more until only one of the edges Single grains of material veil remain. On the other hand defines the guide cone 102 'together with the surface 38 an expediently adjustable gap 39 which is formed in this way or can be set that larger balls of thread Material can be stopped.
  • valve body 33 is in one relative to its seat 33 ' Way adjustable or self-adjusting, as from the DE-C-29 29 672 has become known, the content of which by reference should be considered disclosed here, so that an in-depth Description of the associated adjustment mechanism 42 is omitted can.
  • the height of the guide cone 102 ' is for the purpose of adjusting the gap 39 relative to the air guide ring 102 ′′ with the aid of an adjusting device 49 fixed adjustable.
  • a support rod 44 is provided at its upper end a screw nut supported on a fixed stop 45 46 wears.
  • one of the support rods here the rod 47 of the adjusting device 42 for the valve 33, 33 ', hollow and includes the other rod 44.
  • Another guide for the guide cone 102 ' is on his Bottom provided where a plurality, conveniently three, guide rods 48 protrude vertically downwards and in guide bushings 50 of the stationary funnel 205 are guided.
  • To this Way is a uniform slot width, and thus one even air distribution over the entire circumference of the guide cone 102 'and an adjustable division of the air flow secured in partial flows 36, 36 '.
  • FIG. 5 An advantageous dimensioning will also be described with reference to FIG. 5, which can be used analogously for the other exemplary embodiments is. If you have a circle around the edges the spreading plate 6 pulls, there will be a maximum in this area Particle speed. In the embodiments 4 and 5 are the particles in this Edge area by a radially outwardly extending Flange 16 'out. In the middle of the resulting Slot 8 is a dash-dotted line m in Fig.

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  • Detergent Compositions (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
EP93115763A 1992-10-20 1993-09-30 Vorrichtung und Verfahren zum Reinigen eines im wesentlichen in Granulatform vorliegenden Korngemenges Expired - Lifetime EP0593955B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19924235260 DE4235260A1 (de) 1992-10-20 1992-10-20 Vorrichtung zum Reinigen eines im wesentlichen in Granulatform vorliegenden Korngemenges und Verfahren zum Reinigen dieses Korngemenges
DE4235260 1992-10-20
DE19934302857 DE4302857A1 (de) 1993-02-02 1993-02-02 Vorrichtung zum Reinigen eines im wesentlichen in Granulatform vorliegenden Korngemenges und Verfahren zum Reinigen dieses Korngemenges
DE4302857 1993-02-02

Publications (3)

Publication Number Publication Date
EP0593955A2 EP0593955A2 (de) 1994-04-27
EP0593955A3 EP0593955A3 (de) 1995-04-05
EP0593955B1 true EP0593955B1 (de) 1999-01-13

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ID=25919620

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Application Number Title Priority Date Filing Date
EP93115763A Expired - Lifetime EP0593955B1 (de) 1992-10-20 1993-09-30 Vorrichtung und Verfahren zum Reinigen eines im wesentlichen in Granulatform vorliegenden Korngemenges

Country Status (5)

Country Link
US (1) US5458245A (es)
EP (1) EP0593955B1 (es)
AT (1) ATE175594T1 (es)
DE (1) DE59309296D1 (es)
ES (1) ES2128377T3 (es)

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DE19756099A1 (de) 1997-12-17 1999-07-01 Waeschle Gmbh Verfahren zum Sichten von Schüttgut
DE19957993B4 (de) * 1999-12-02 2004-07-22 Bückmann GmbH Kegelsichter und Verfahren zum Sichten von eingeschränkt oder nicht rieselfähigem Schüttgut und Halterungsstrebe
DE10030705A1 (de) * 2000-06-23 2002-01-03 Hosokawa Micron Gmbh Zyklonsichter mit zentralen Einbau
US8118173B2 (en) * 2008-12-03 2012-02-21 Westlake Longview Corp. Streamer trap assembly
RU2458750C1 (ru) * 2011-03-04 2012-08-20 Федеральное государственное образовательное учреждение высшего профессионального образования "Воронежский государственный аграрный университет имени К.Д. Глинки" (ФГОУ ВПО ВГАУ им. К.Д. Глинки) Приемно-распределительное устройство зерноочистительной машины
RU2465073C1 (ru) * 2011-05-04 2012-10-27 Федеральное государственное образовательное учреждение высшего профессионального образования "Вятская государственная сельскохозяйственная академия" (ФГОУ ВПО Вятская ГСХА) Пневматический сепаратор
DE102013218237A1 (de) * 2013-09-11 2015-03-12 BüHLER GMBH Einrichtung zur Bestimmung einer Menge von Schüttgut, Einlasseinrichtung für Schüttgut, Reinigungsmaschine für Schüttgut und entsprechende Verfahren
DE102015101779A1 (de) * 2014-02-25 2015-08-27 Pelletron Corp. Entstaubungsapparat mit aktuaktorkontrollierten Einlassableitblechen zur Produktflussregulierung
US9968971B1 (en) * 2014-07-11 2018-05-15 Plastic Revolutions, Inc. Friction washer that cleans plastic for recycling
CN105537115A (zh) * 2015-12-07 2016-05-04 重庆华世丹机械制造有限公司 一种清选机构及其收割机
DE102016106588B4 (de) * 2016-04-11 2023-12-14 Neuman & Esser Process Technology Gmbh Sichter
CN110465488B (zh) * 2019-08-05 2021-03-02 界首市金龙机械设备有限公司 一种粮食平抛式除尘装置
RU2758280C1 (ru) * 2020-12-03 2021-10-28 Федеральное государственное автономное образовательное учреждение высшего образования "Уральский федеральный университет имени первого Президента России Б.Н. Ельцина" Воздушный классификатор сыпучих материалов

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Also Published As

Publication number Publication date
US5458245A (en) 1995-10-17
ATE175594T1 (de) 1999-01-15
EP0593955A2 (de) 1994-04-27
EP0593955A3 (de) 1995-04-05
DE59309296D1 (de) 1999-02-25
ES2128377T3 (es) 1999-05-16

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