EP0801995A1 - Installation pour séparer par tamisage une fraction à granulométrie fine, d'une matière broyée - Google Patents

Installation pour séparer par tamisage une fraction à granulométrie fine, d'une matière broyée Download PDF

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Publication number
EP0801995A1
EP0801995A1 EP96105762A EP96105762A EP0801995A1 EP 0801995 A1 EP0801995 A1 EP 0801995A1 EP 96105762 A EP96105762 A EP 96105762A EP 96105762 A EP96105762 A EP 96105762A EP 0801995 A1 EP0801995 A1 EP 0801995A1
Authority
EP
European Patent Office
Prior art keywords
drum
screening
housing
flow nozzle
gas
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.)
Granted
Application number
EP96105762A
Other languages
German (de)
English (en)
Other versions
EP0801995B1 (fr
Inventor
Felix Cloos
Claus Gronholz
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.)
Umwelt-Technics-Nord GmbH
Umwelt Technics Nord GmbH
Original Assignee
Umwelt-Technics-Nord GmbH
Umwelt Technics Nord 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
Application filed by Umwelt-Technics-Nord GmbH, Umwelt Technics Nord GmbH filed Critical Umwelt-Technics-Nord GmbH
Priority to AT96105762T priority Critical patent/ATE180995T1/de
Priority to DE59602162T priority patent/DE59602162D1/de
Priority to EP96105762A priority patent/EP0801995B1/fr
Priority to ES96105762T priority patent/ES2135131T3/es
Priority to DK96105762T priority patent/DK0801995T3/da
Publication of EP0801995A1 publication Critical patent/EP0801995A1/fr
Application granted granted Critical
Publication of EP0801995B1 publication Critical patent/EP0801995B1/fr
Priority to GR990401564T priority patent/GR3030489T3/el
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
    • 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
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/18—Drum screens
    • B07B1/22—Revolving drums
    • 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

Definitions

  • the invention relates to a plant for screening off a fraction of small grain sizes from a material comminuted by means of a crusher or the like according to the preamble of patent claim 1.
  • the recycling material should correspond to a desired grit line so that the individual fractions are available for the desired purposes, for example in road construction.
  • the invention has for its object to provide a system for screening a fraction of smaller grain sizes from a comminuted by means of a crusher or the like, in which the throughput can be increased.
  • the system according to the invention is also with the help a flow nozzle pressure under gas directed from the outside against the sieve drum.
  • the arrangement of the flow nozzle is in the lower area on the upward moving section of the screening drum.
  • the material moved upwards by the sieve drum is partially blown against a deflection plate and the moved material is conveyed against the opposite inside of the sieve drum, where it then partially exits and is directed to the outlet between the drum and the housing.
  • the available effective screen area is significantly increased.
  • the throughput per unit of time is increased significantly.
  • trouble-free operation is obtained because the flow nozzle prevents the mesh of the screen from clogging. This effect is improved when the gas is heated.
  • the material to be screened is thereby dried and therefore does not tend to adhere to the inside of the screening drum.
  • the exhaust gas of a diesel engine is used as the compressed gas.
  • Crushers generally use a generator that generates the electricity for the electric motor that drives the crusher.
  • a diesel engine is used to drive the generator.
  • the Exhaust gas from a diesel engine has a temperature of over 500 ° C and is also under a sufficiently high pressure that it can be used to supply the flow nozzle. In this way it is possible to use a large part of the loss energy of the diesel engine in a screening plant to increase the throughput and to ensure trouble-free operation.
  • soot particle filter into which the uncleaned exhaust gas is introduced. It is possible to obtain a particle separation rate of up to 95% with known filters.
  • the flow nozzle can be adjusted via an adjustment drive in order to change the height of the inlet area of the flow into the sieve drum.
  • the flow nozzle can be designed as an opening in a plate which is coupled to the adjusting device. The plate extends approximately tangentially to the sieve drum and, when adjusted, shifts the relative position of the nozzle opening and thus also the position with respect to the drum in which the gas flow enters the sieve drum. The location of the flow nozzle can be below other be made dependent on the pressure of the gas. Therefore, an embodiment of the invention provides that a control device is provided for the adjusting device and a pressure sensor in front of the flow nozzle, which measures the pressure of the gas, the adjusting device adjusting the flow nozzle depending on the pressure.
  • an air outlet is provided on the front end face of the screening drum, which filter is arranged upstream.
  • the air outlet can extend over almost the entire end face, it being necessary to ensure that the radially outer area in each case remains free for the outlet of the coarser material.
  • An apron or the like can be provided here, which is pushed aside by the material, so that as little gas as possible is released into the open without being filtered.
  • the air outlet is otherwise provided with a filter, for example a filter mat, which prevents very fine particles from spreading outward in the form of dust.
  • water can also be used, which is sprayed onto the emerging coarser material by means of spray nozzles.
  • Another outlet can be formed by at least one connection provided in the upper region of the housing, which is also provided with a filter device.
  • the filtered gas can be connected to the feed line for the flow nozzle via a return line in order to reuse the escaping gas.
  • a heater can be provided in the return line, which brings the returned gas to the temperature of the gas in the supply line.
  • the wall of the housing for the sieve drum is provided with thermal insulation.
  • a screen drum 10 is rotatably mounted about an axis slightly inclined to the horizontal in a housing, as indicated at 12 in FIG. 1.
  • three drives 14 are arranged in the upper area.
  • the material inlet is indicated by an arrow 16. It is located at the higher end of the screening drum 10.
  • the material outlet for the material to be screened is marked with the arrow 18.
  • the screenings should be in the grain size range 0 to 4.
  • the material not sieved is removed from the sieve drum 10 at 20.
  • the screen drum is therefore to be provided with an outlet for this material which extends in the circumferential direction.
  • the end face is provided with a gas outlet 22, for example in the form of lamellae, upstream of which a filter 24, for example in the form of a filter mat, is arranged.
  • the function of the gas outlet 22 will be explained further below.
  • the housing 12 which is also provided with thermal insulation, has an outlet 26 in the lower region for the material to be screened, which falls on a take-off belt 28, which is not shown in detail.
  • a plate 30 is arranged which is a relatively short distance to the drum 10 and is adjustable in the direction of the double arrow 32 in the housing 12.
  • the plate 30 has a nozzle opening 34.
  • the plate 30 is located at the end of an expanding pipe 36 which is connected to the exhaust of a diesel engine (not shown).
  • the diesel engine is, for example, part of a generator that ensures the energy supply for an electric motor that drives a crusher, not shown. It also supplies the electric motor or the motors for driving the screening drum 10.
  • Such an operating mode for crusher systems or screening devices is known per se.
  • the exhaust gas passes through a soot filter, also not shown, which removes almost all soot particles, into line 36. It then flows obliquely upward through nozzle opening 34 into sieve drum 10, as indicated by flow 40 in FIG. 2.
  • a baffle 42 bent according to the drum wall and extending between the plate 30 and the apex of the screening drum 10 causes the flow 40 to be deflected in the direction of the opposite drum wall. As indicated by the double arrow 44, the position of the baffle 42 can be changed. The structural details are not shown.
  • part of the material 46 carried along in the circumferential direction in the screening drum 10 is conveyed upward by the gas flow 40 against the baffle 42 in the direction of the opposite sieve drum wall. Material with a grain size smaller than the mesh size of the sieve drum 10 is sieved in this way. The effective screening area of the screening drum 10 is therefore considerably increased by this measure.
  • the strainer is cleaned by the exhaust gas flow 40. Since the exhaust gas is hot, for example at a temperature of 300 to 500 ° C., the material to be sieved is also heated and thus dried, so that the risk of sticking in the sieve drum is avoided.
  • a large part of the exhaust air is released into the atmosphere through the filter 24 and the outlet 22. Another part is passed via an upper outlet to a filter device 48, not shown, wherein cleaned air is introduced into line 36 via a return line 50.
  • a filter device 48 According to the jet pump principle, the recirculated gas is reintroduced into the sieve drum through the nozzle opening.
  • a heating device 52 is provided in the return line 50 in order to bring the returned gas back to the temperature of the exhaust gas. Particles separated by the filter device 48 pass through a shaft 54 to a screw conveyor 56 which does the fine screened material is transported to take-off belt 28.
  • a plurality of flow nozzles are provided in the axial direction of the screening drum 10, for example three at regular intervals from one another.
  • a plurality of outlets 46 can also be provided.
  • the filter system 48 can also be designed as a dedusting system with a blower.
  • the plate 30 is adjustable by means of an adjusting cylinder 58 in the direction of the double arrow 32 depending on the operating conditions, i.e. Condition of the material to be screened and the pressure in line 36.
  • a pressure transmitter (not shown) can be provided, which is connected to a control device, also not shown, which actuates the adjusting cylinder 58 as a function of the measured pressure.
  • the circularly deflected baffle 42 can be adjusted.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Disintegrating Or Milling (AREA)
  • Testing Of Engines (AREA)
  • Pretreatment Of Seeds And Plants (AREA)
EP96105762A 1996-04-12 1996-04-12 Installation pour séparer par tamisage une fraction à granulométrie fine, d'une matière broyée Expired - Lifetime EP0801995B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
AT96105762T ATE180995T1 (de) 1996-04-12 1996-04-12 Anlage zur absiebung einer fraktion kleiner korngrössen aus einem zerkleinerten gut
DE59602162T DE59602162D1 (de) 1996-04-12 1996-04-12 Anlage zur Absiebung einer Fraktion kleiner Korngrössen aus einem zerkleinerten Gut
EP96105762A EP0801995B1 (fr) 1996-04-12 1996-04-12 Installation pour séparer par tamisage une fraction à granulométrie fine, d'une matière broyée
ES96105762T ES2135131T3 (es) 1996-04-12 1996-04-12 Dispositivo para el cribado de una fraccion de tamaños pequeños de grano de un producto molido.
DK96105762T DK0801995T3 (da) 1996-04-12 1996-04-12 Anlæg til ved sigtning at skille en fraktion med lille kornstørrelse fra findelt materiale
GR990401564T GR3030489T3 (en) 1996-04-12 1999-06-10 Plant for separating by screening a fraction of small grain size from crushed material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP96105762A EP0801995B1 (fr) 1996-04-12 1996-04-12 Installation pour séparer par tamisage une fraction à granulométrie fine, d'une matière broyée

Publications (2)

Publication Number Publication Date
EP0801995A1 true EP0801995A1 (fr) 1997-10-22
EP0801995B1 EP0801995B1 (fr) 1999-06-09

Family

ID=8222663

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96105762A Expired - Lifetime EP0801995B1 (fr) 1996-04-12 1996-04-12 Installation pour séparer par tamisage une fraction à granulométrie fine, d'une matière broyée

Country Status (6)

Country Link
EP (1) EP0801995B1 (fr)
AT (1) ATE180995T1 (fr)
DE (1) DE59602162D1 (fr)
DK (1) DK0801995T3 (fr)
ES (1) ES2135131T3 (fr)
GR (1) GR3030489T3 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004048006A1 (fr) * 2002-11-28 2004-06-10 Mbengineering Gmbh & Co. Kg Procede et dispositif pour separer des particules de poussiere d'un granulat
WO2021226643A1 (fr) * 2020-05-13 2021-11-18 Rubble Master Hmh Gmbh Procédé pour nettoyer des particules d'occultation dans des broyeurs
CN114011530A (zh) * 2021-10-14 2022-02-08 南京澳博工业智能科技研究院有限公司 一种水泥粉磨加工用高效处理设备及其使用方法
CN115121326A (zh) * 2022-08-26 2022-09-30 徐州科恒奥制冷设备有限公司 废旧机电产品拆解的无害化处理装备
CN115283255A (zh) * 2022-09-27 2022-11-04 山东润科化工股份有限公司 一种阻燃母粒筛分装置
CN116371726A (zh) * 2023-06-07 2023-07-04 山西东强生物科技有限公司 一种化工物料精细筛选设备

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101347756B (zh) * 2008-04-18 2010-04-21 王庆辉 锤片式滚筒筛粉碎机
CN101947481B (zh) * 2010-10-22 2011-12-07 河南理工大学 井下用选择性破碎机

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU906627A1 (ru) * 1980-06-16 1982-02-23 Всесоюзный Научно-Исследовательский,Экспериментально-Конструкторский Институт Коммунального Машиностроения Барабанный грохот
SU1158250A1 (ru) * 1983-08-16 1985-05-30 Le Selskokhoz I "пhebmopeшethый ceпapatop"
DE3720490A1 (de) * 1987-06-20 1988-12-29 Kapuschinski Hannes J Siebvorrichtung
DE3905945A1 (de) * 1989-02-25 1990-08-30 Lothar Dipl Ing Schiller Siebmaschine mit einer um eine im wesentlichen horizontale achse rotierenden, zylindrischen siebtrommel

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU906627A1 (ru) * 1980-06-16 1982-02-23 Всесоюзный Научно-Исследовательский,Экспериментально-Конструкторский Институт Коммунального Машиностроения Барабанный грохот
SU1158250A1 (ru) * 1983-08-16 1985-05-30 Le Selskokhoz I "пhebmopeшethый ceпapatop"
DE3720490A1 (de) * 1987-06-20 1988-12-29 Kapuschinski Hannes J Siebvorrichtung
DE3905945A1 (de) * 1989-02-25 1990-08-30 Lothar Dipl Ing Schiller Siebmaschine mit einer um eine im wesentlichen horizontale achse rotierenden, zylindrischen siebtrommel
EP0385241A1 (fr) * 1989-02-25 1990-09-05 Lothar Dipl.-Ing. Schiller Appareil de tamisage

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
SOVIET INVENTIONS ILLUSTRATED Section PQ Week 8301, 16 February 1983 Derwent World Patents Index; Class P43, AN 83A2444K, XP002011819 *
SOVIET INVENTIONS ILLUSTRATED Section PQ Week 8548, 24 December 1985 Derwent World Patents Index; Class P43, AN 85302017, XP002011820 *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004048006A1 (fr) * 2002-11-28 2004-06-10 Mbengineering Gmbh & Co. Kg Procede et dispositif pour separer des particules de poussiere d'un granulat
WO2021226643A1 (fr) * 2020-05-13 2021-11-18 Rubble Master Hmh Gmbh Procédé pour nettoyer des particules d'occultation dans des broyeurs
CN115175767A (zh) * 2020-05-13 2022-10-11 碎石大师Hmh有限公司 用于在破碎机中清理堵孔颗粒的方法
CN115175767B (zh) * 2020-05-13 2024-03-12 碎石大师Hmh有限公司 用于在破碎机中清理堵孔颗粒的方法
CN114011530A (zh) * 2021-10-14 2022-02-08 南京澳博工业智能科技研究院有限公司 一种水泥粉磨加工用高效处理设备及其使用方法
CN115121326A (zh) * 2022-08-26 2022-09-30 徐州科恒奥制冷设备有限公司 废旧机电产品拆解的无害化处理装备
CN115283255A (zh) * 2022-09-27 2022-11-04 山东润科化工股份有限公司 一种阻燃母粒筛分装置
CN116371726A (zh) * 2023-06-07 2023-07-04 山西东强生物科技有限公司 一种化工物料精细筛选设备
CN116371726B (zh) * 2023-06-07 2023-08-11 山西东强生物科技有限公司 一种化工物料精细筛选设备

Also Published As

Publication number Publication date
ES2135131T3 (es) 1999-10-16
ATE180995T1 (de) 1999-06-15
DK0801995T3 (da) 1999-12-13
DE59602162D1 (de) 1999-07-15
GR3030489T3 (en) 1999-10-29
EP0801995B1 (fr) 1999-06-09

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