EP1987894A2 - Crible - Google Patents

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Publication number
EP1987894A2
EP1987894A2 EP08007979A EP08007979A EP1987894A2 EP 1987894 A2 EP1987894 A2 EP 1987894A2 EP 08007979 A EP08007979 A EP 08007979A EP 08007979 A EP08007979 A EP 08007979A EP 1987894 A2 EP1987894 A2 EP 1987894A2
Authority
EP
European Patent Office
Prior art keywords
screening machine
machine according
fine material
fine
deck
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.)
Withdrawn
Application number
EP08007979A
Other languages
German (de)
English (en)
Other versions
EP1987894A3 (fr
Inventor
Matthias Coppers
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.)
Rhewum GmbH
Original Assignee
RHEWUM RHEINISCHE WERKZEUG und MASCHINENFABRI
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
Application filed by RHEWUM RHEINISCHE WERKZEUG und MASCHINENFABRI filed Critical RHEWUM RHEINISCHE WERKZEUG und MASCHINENFABRI
Publication of EP1987894A2 publication Critical patent/EP1987894A2/fr
Publication of EP1987894A3 publication Critical patent/EP1987894A3/fr
Withdrawn legal-status Critical Current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
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
    • B07B1/50—Cleaning
    • B07B1/55—Cleaning with fluid jets
    • 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
    • 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
    • B07B4/08—Separating solids from solids by subjecting their mixture to gas currents while the mixtures are supported by sieves, screens, or like mechanical elements
    • 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
    • B07B2201/00—Details applicable to machines for screening using sieves or gratings
    • B07B2201/04—Multiple deck screening devices comprising one or more superimposed screens

Definitions

  • the invention relates to a screening machine for the separation of sieve-capable goods, consisting of a machine housing, at least one arranged in this sieve deck, a feeder, at least one Grobgutabgabeteil, is deducted from the sieve debris retained coarse material, and a Feingutabgabeteil, on the separated by the sieve deck fines is deducted.
  • Such screening machines are known in Eindeckaus entryen or in multi-deck designs in the art. Furthermore, so-called classifiers are also known with which a very fine separation and dedusting can take place. For sophisticated materials, where a dedusting of the material is to be done, the known facilities cause problems. If, for example, a dedusting of fine salt takes place, in which there is a particle size of 0-2 mm and a dust content of 100 ⁇ m in the Range is to be achieved by less than 5%, so this is possible with the known facilities only with great effort. When dedusting or discharging with separations ⁇ 200 ⁇ m, large material flows have to be mastered. Due to the low specific screening capacities correspondingly large screening machines with multi-deck designs are required.
  • a device of the type mentioned with a Mitstromsichter is for example from the DE 35 27 179 C1 known.
  • the present invention seeks to provide a screening machine available that allows for relatively small size with low energy consumption dedusting of bulk materials.
  • the invention proposes that in the fine material delivery part a cross-flow classifier is integrated, by means of which the fine material can be dedusted.
  • the screening machine has a substantially closed housing, wherein the fines are discharged via a so-called bottom. In this subtractor, the fines are dedusted in a visible zone.
  • the screening machine may have at least one screen deck. But it is also possible to use screening machines with multiple decks. With the combination of screening machine and cross-flow classifier different designs are possible. For example, it is possible to install the screening machine and the Querstromsichter in a stationary housing, with only the Siebbelag (mesh) is energized. Alternatively, the screening machine can also be moved with the screen covering and the fine-material hopper can be stationarily arranged with the cross-flow separator. It is also possible to vibrate the screening machine including the cross-flow sifter. Preferably, the Querstromsichter uses the entire width of the fine material discharge of the screening machine as a task.
  • the feeding device covers the screen deck at the task area over its entire width.
  • the screening machine with a feeding device for the most uniform possible Width distribution of the material on the screening machine and thus provided on the sifter.
  • a suction device is connected as part of the Querstromsichters to the part designed as a fine material dispensing part, by means of which the dust content of the fine material is sucked.
  • an adjusting flap for adjusting the visual air speed is provided between the screen deck and the suction device.
  • the adjusting flap serves to set the visual air velocity and, on the other hand, ensures the most uniform possible width distribution of the material, which flows off the screen deck as fine material and which is fed to the classifying zone.
  • the adjusting flap can preferably be articulated above the suction device and below the screen deck on a housing wall, so that by pivoting or pivoting the valve the reform Kunststoff Marie is adjustable, always a uniform distribution of the screen discharged fine material flow is achieved, which hits the valve and by this is largely evenly distributed.
  • the suction device has an adjustable aperture for adjusting the Luftabsaugmenge.
  • the amount of air can be adjusted, for example, for suction speeds of 10 to 40 m / s.
  • the setting of the speed of view air by means of the damper for example, in the range 0.5 to 5 m / s.
  • a differential pressure measuring device is installed in the housing, with a first pressure transducer in the direction of the screened material in front of the valve and a second pressure transducer behind the valve.
  • the user can make a determination of the gas volume flow, the gas velocity and the separation grain by differential pressure measurement in conjunction with the corresponding defined cross sections. If the setting has once been made for a particular bulk material, a change is no longer necessary.
  • ventilation openings are provided in a housing wall above the screen deck.
  • a ventilation flap is provided in a housing wall below the screen deck.
  • the vent can be opened to allow additional air delivery, with the air not flowing through the mesh.
  • the screen deck is provided with a screen cloth cleaning device.
  • knockers or the like may be provided, by means of which the screen mesh can be freed from clamping grain.
  • compressed air nozzles are arranged below the screen fabric, by means of which the screen fabric with compressed air can be flowed through in countercurrent.
  • baffles are arranged in the fine material delivery part, which is designed as a channel, by means of which the fine material is dispersed.
  • the fine material dispensing part which may be formed as a base, has baffles on which the fines meet, so that it is even better dispersed by means of baffles.
  • air supply nozzles are provided at the fine material delivery part, which are directed into the fine material delivery part.
  • At least one baffle is provided below the outlet end of the screen deck, by means of which the material guide is influenced in the direction of the viewing zone.
  • the fines can be optimally guided into the viewing zone.
  • the fine material delivery part below the viewing zone with a ceremoniessschwenkklappe is equipped, which separates the fine material discharge part in a first position relative to the coarse material discharge part, and in a second position, the fine material discharge part connects to the coarse product discharge part, so that the coarse material and fine material material streams are combined.
  • the guide pivot flap is provided, wherein in a first position it closes a connection channel between the fines outlet and the coarse material outlet and opens this channel in a second position, so that the dedusted fines are fed to the coarse material removal channel together with the coarse material.
  • the single drawing figure shows schematically a screening machine seen in cross-section.
  • the screening machine consists of a housing 1 which is substantially closed and from which a Grobguttrichter 2, a middle hopper 3 and a fine hopper 4 go down.
  • the screening machine has two screen decks 5, 6, the screen meshes of the screen decks 5, 6 being excited in a manner known per se.
  • the screening machine has a feeding device 7, by means of which the corresponding screenings are fed into the machine.
  • the screened material deposited at 7 is fed onto the feed end of the screen decks 5, 6, with a coarse fraction of, for example,> 2 mm of grain size being discharged through the coarse-material hopper 2.
  • the average screenings in a grain size of, for example, 1-2 mm is discharged through the hopper 3, while the fines are discharged in a grain size of 1-0.1mm on the fine-funnel 4.
  • a cross-flow classifier 8 is integrated, the individual components will be explained later.
  • the fine material can be dedusted, dust particles can be removed, for example, ⁇ 200 microns.
  • the feeding device 7 covers the screen deck 5 or 6 at the feed area over its entire width, so that as uniform as possible loading of bulk material takes place.
  • a suction device 9 is connected to the housing part designed as a fine material delivery part (4) as part of the cross-flow classifier 8, by means of which the dust content of the fine material is sucked off.
  • a valve 10 is arranged for adjusting the speed of view air.
  • This valve 10 is articulated above the suction device 9 and below the screening deck 6 on the corresponding housing wall, so that a pivoting movement in the direction of the arrow 11 is made possible.
  • the suction device 9 on an adjustable aperture 12 for adjusting the Lucasabsaugmenge.
  • a differential pressure measuring device 13 with a first pressure transducer in the direction of the screened material in front of the valve 10 and a second pressure transducer behind the valve 10. It is thus in connection with defined cross sections of the screening machine allows differential pressure measurement and thus a determination of the gas flow, the Gas velocity and the separation grain.
  • Ventilation openings 14 are provided in a housing wall above the screen deck. Through this, the amount of fines can be increased because 9 air is sucked through the suction device, which can enter through the opening 14 and is sucked through the mesh of Siebdecks 5,6, thus increasing the amount of fines that passes through the Siebdecks.
  • a ventilation flap 15 is provided in a housing wall below the screen deck. This is opened when the sucked air volume is too large to flow through the mesh.
  • each screen deck is preferably provided with a cleaning device, for example with beaters or the like.
  • additional compressed air nozzles 16 are arranged below the screen fabric of the screening deck 6, by means of which the screen fabric can be flowed through with compressed air in countercurrent, in order to clean it. Furthermore, the screenings are dispersed by this supplied compressed air.
  • baffles 17 are furthermore arranged, of which only one is shown, which serve to better disperse the outflowing fine material.
  • air supply nozzles 18 are provided, which are directed into the Feingutabgabeteil or in the effluent from the screen deck 6 fine material flow. As a result, the fine material is additionally dispersed.
  • a guide plate 19 is arranged below the outlet end of the screen deck 6, by means of which the material guide can be influenced in the direction of the viewing zone.
  • the baffle is adjustable according to the movement arrow 20.
  • a guide pivotal flap 21 is provided below the viewing zone, which separates the fine-material delivery part from the coarse-material discharge part 3 in a first position (shown in phantom). In a second position, which is shown in solid lines in the drawing, through this flap 21, the fine material discharge part 4 can be connected via the channel 22 to the coarse material dispensing part 3, so that the coarse material and the fine material unified leaves the dispensing part 3 downwards.
  • the mechanical complexity is relatively low and also the energy consumption and energy consumption in the operation of the combination machine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Combined Means For Separation Of Solids (AREA)
EP08007979.1A 2007-05-04 2008-04-25 Crible Withdrawn EP1987894A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007021004A DE102007021004B3 (de) 2007-05-04 2007-05-04 Siebmaschine

Publications (2)

Publication Number Publication Date
EP1987894A2 true EP1987894A2 (fr) 2008-11-05
EP1987894A3 EP1987894A3 (fr) 2013-07-03

Family

ID=39277948

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08007979.1A Withdrawn EP1987894A3 (fr) 2007-05-04 2008-04-25 Crible

Country Status (3)

Country Link
US (1) US20080272031A1 (fr)
EP (1) EP1987894A3 (fr)
DE (1) DE102007021004B3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105856051A (zh) * 2016-05-12 2016-08-17 绍兴中亚胶囊有限公司 一种用于胶囊的多功能分选除尘装置
WO2017067533A1 (fr) * 2015-10-24 2017-04-27 Envital GmbH Dispositif de séparation d'un mélange de matériaux et procédé de séparation d'un mélange de matériaux

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WO2014053295A1 (fr) * 2012-10-02 2014-04-10 Binder + Co Ag Dispositif et procédé de criblage de matériau de chargement polydispersé
DE112013007196A5 (de) * 2013-06-28 2016-03-10 Dirk Barnstedt Vorrichtung zum Trennen von flächigen und körperförmigen leichten und schweren Feststoffen
ES2527781B1 (es) * 2014-05-02 2015-09-23 Inno Almond Fly, S.L. Procedimiento para la separación de la cáscara de las semillas o fruto, dispositivo de cribado y dispositivo seleccionador
CN107234066B (zh) * 2017-08-08 2023-04-28 中粮工科茂盛装备(河南)有限公司 回转组合多层筛的二次抽风进料系统
CN107321612A (zh) * 2017-08-23 2017-11-07 湖州市下昂多联铸造有限公司 一种废砂回收装置
CN110465492A (zh) * 2018-05-12 2019-11-19 襄阳市飞钟粮食机械有限公司 一种粮粒振动精选设备
US12096721B2 (en) * 2018-09-07 2024-09-24 Roy BREWIN Crop dust separation system
IT201900010356A1 (it) * 2019-06-28 2020-12-28 Cala S R L Macchina separatrice perfezionata di frutta secca e gusci
CN111195598A (zh) * 2020-02-26 2020-05-26 公主岭国家农业科技园区九正生物医药科技有限公司 玉米须开松除尘装置
CN114058839B (zh) * 2020-08-07 2023-06-23 中冶长天国际工程有限责任公司 烧结燃料粒度控制装置及控制方法
CN113369123A (zh) * 2020-08-28 2021-09-10 辰溪县红玫生态农林开发有限公司 一种水稻种子加工用谷糙分离主机
CN113171982A (zh) * 2021-04-15 2021-07-27 合肥水泥研究设计院有限公司 一种多产品机械风力组合式选粉机
CN113171983A (zh) * 2021-04-15 2021-07-27 合肥水泥研究设计院有限公司 一种风力筛分组合式分级机
CN114986738B (zh) * 2022-06-06 2023-10-17 河南泉象实业有限公司 一种尼龙扎带挤压造粒装置
CN115121480B (zh) * 2022-06-28 2024-01-09 燕龙基(徐州)再生资源利用有限公司 一种碎玻璃颗粒筛分设备的控制方法
CN115350920B (zh) * 2022-08-26 2023-06-13 安徽申亚农业发展有限公司 一种在饲料加工过程中处理粉尘的装置
CN116945413A (zh) * 2023-08-07 2023-10-27 安徽瑞琦塑胶科技有限公司 一种塑料颗粒多级筛选装置
CN117772076B (zh) * 2024-02-23 2024-05-03 山西天茂盛环保科技有限公司 一种煤矸石回收利用系统

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DE3527179C1 (de) 1985-07-30 1986-12-18 Thomas 4400 Münster Holzapfel Verfahren zur trockenen Auftrennung von Steinkohlenflugstäuben und Vorrichtung zur Durchführung des Verfahrens

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017067533A1 (fr) * 2015-10-24 2017-04-27 Envital GmbH Dispositif de séparation d'un mélange de matériaux et procédé de séparation d'un mélange de matériaux
CN105856051A (zh) * 2016-05-12 2016-08-17 绍兴中亚胶囊有限公司 一种用于胶囊的多功能分选除尘装置

Also Published As

Publication number Publication date
EP1987894A3 (fr) 2013-07-03
US20080272031A1 (en) 2008-11-06
DE102007021004B3 (de) 2008-05-15

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