EP0835695A2 - Tamis plat pour produits agricoles en morceaux - Google Patents

Tamis plat pour produits agricoles en morceaux Download PDF

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Publication number
EP0835695A2
EP0835695A2 EP97117230A EP97117230A EP0835695A2 EP 0835695 A2 EP0835695 A2 EP 0835695A2 EP 97117230 A EP97117230 A EP 97117230A EP 97117230 A EP97117230 A EP 97117230A EP 0835695 A2 EP0835695 A2 EP 0835695A2
Authority
EP
European Patent Office
Prior art keywords
drive
wheel
sieve
driven
flat screen
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
EP97117230A
Other languages
German (de)
English (en)
Other versions
EP0835695A3 (fr
EP0835695B1 (fr
Inventor
Ingo Mikulla
Kurt Lippmann
Heinz Hempel
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.)
NETAGCO Potato Division
Original Assignee
Fritz Dohne & Co KG 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 Fritz Dohne & Co KG GmbH filed Critical Fritz Dohne & Co KG GmbH
Publication of EP0835695A2 publication Critical patent/EP0835695A2/fr
Publication of EP0835695A3 publication Critical patent/EP0835695A3/fr
Application granted granted Critical
Publication of EP0835695B1 publication Critical patent/EP0835695B1/fr
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
    • B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
    • 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
    • B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens

Definitions

  • the invention relates to a flat screen sorter for chunky agricultural Crops for sorting these crops, especially potatoes, Vegetables and fruit.
  • the sieves are in sieve boxes that are guided in handlebars assembled.
  • These sorters have gear technology as the drive form Crank gear or a cam gear. While over a crank gear driven screens due to the low ratio crank length / handlebar length an approximately sinusoidal sieve movement is generated when driving a deviating screen movement possible via a cam mechanism.
  • the invention has for its object a flat screen sorter for gentle movement of the sieve with low sorting errors and high throughput for the flat screen sorting of lumpy agricultural crops, especially of potatoes, vegetables and fruit to develop with the Flat screen sort the mechanical damage to the screened material significantly reduced and sieve errors are reduced and the effective working width related throughput is increased.
  • the object is achieved by a flat screen sorter with a specially designed drive for the screens.
  • the drive takes place and the movement of the screens over crankshafts, each by a drive wire be driven, which as a decentrally mounted on the crankshaft Is executed disc and each via a form-fitting envelope element with a drive wheel arranged decentrally or centrally on a drive shaft and if necessary with another decentralized also on a crankshaft
  • the driven driven wheel is connected and the envelope element is a spring-loaded tensioning wheel assigned.
  • the sieve boxes 2 mounted in the handlebars 3 are articulated with the sieves 1 via the coupling rods 4 to the crankshafts 5.
  • a driven wheel 6 is arranged, which is designed as a decentrally mounted disc.
  • Two driven wheels 6 each are driven by a drive wheel 8 arranged decentrally or centrally on a drive shaft 7 via a form-fitting envelope element 9.
  • a sprung tensioning wheel 10 is arranged in each run between the two driven wheels 6 in order to ensure constant tightening of the form-fitting envelope element 9.
  • the phase position of the two sieve boxes 2 driven by a form-fitting enveloping element 9 can be predetermined as desired, but in the sense of limiting the inertial forces acting on the machine frame have a difference of 60 ... 300 ° and in terms of of the spring travel should be optimized, the decentralized arrangement of the drive wheel 8 on the drive shaft 7, the phase position of the two sieve movements realized by a form-fitting enveloping element 9 is predetermined by the geometry of the enveloping drive.
  • each of the 4 sieve boxes 2 changed from one another, by 60 ... 120 ° or a multiple thereof Has phase. This is the prerequisite for limiting the inertial forces acting on the machine frame and thus ensuring that the machine stands securely on the surface.
  • the drive wheel 8 of the drive shaft 7 and the two driven wheels 6 of the crankshafts 5 are brought into the position in which the least deflection of the spring-loaded tensioning wheel 10 is achieved.
  • the sieve movement Due to the uneven transmission ratio, the sieve movement has an uneven vibration curve, which includes a briefly acting area of intensive sieve accelerations during the upward stroke and a long-lasting area of less intensive sieve accelerations, the so-called rest phase, during the downward stroke.
  • the high positive and negative accelerations make it possible to dissolve the pile and to align the individual tubers above the sorting openings when the inertia of the material to be sorted is used.
  • the pronounced resting phase ensures that the tubers pass quickly through the sorting openings with low impact loads.
  • the tubers In the area of increasing sieve acceleration opposite to the material conveying direction, in which the tuber is detached from the sieve 1, there is a high sieving speed and thus tuber speed, which causes the tuber to "roll on” from one sieving mesh to the next.
  • the tubers are thus transported via the sieve 1 primarily through the sieve kinematics and less through good replenishment. This leads to a short dwell time of the tubers on the sieve 1 and thus to a lower mechanical product stress.
  • the spring restoring force of the tensioning wheel 10 is to be matched to the kinematic requirements, on the one hand to ensure a constant tightening of the enveloping element 9 and thus the transmission of the required torques and on the other hand to limit the peak values with regard to the drive torque and the tensile force in the enveloping element 9. Toothed belts come into consideration as covering elements 9. They run with little wear and maintenance even under dusty conditions, have no permanent expansion and are particularly advantageous due to their low mass.
  • the spring-loaded tensioning wheel 10 prevents overstretching of the enveloping element 9 as a result of manufacturing and assembly inaccuracies.

Landscapes

  • Combined Means For Separation Of Solids (AREA)
  • Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)
  • Harvesting Machines For Root Crops (AREA)
EP97117230A 1996-10-08 1997-10-06 Tamis plat pour produits agricoles en morceaux Expired - Lifetime EP0835695B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19641449 1996-10-08
DE19641449A DE19641449C2 (de) 1996-10-08 1996-10-08 Flachsiebsortierer für stückige landwirtschaftliche Güter

Publications (3)

Publication Number Publication Date
EP0835695A2 true EP0835695A2 (fr) 1998-04-15
EP0835695A3 EP0835695A3 (fr) 1999-04-21
EP0835695B1 EP0835695B1 (fr) 2002-04-17

Family

ID=7808161

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97117230A Expired - Lifetime EP0835695B1 (fr) 1996-10-08 1997-10-06 Tamis plat pour produits agricoles en morceaux

Country Status (2)

Country Link
EP (1) EP0835695B1 (fr)
DE (2) DE19641449C2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111468388A (zh) * 2020-04-15 2020-07-31 新沂新硕混凝土有限公司 一种混凝土废料环保回收筛分装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104307741A (zh) * 2014-10-28 2015-01-28 芜湖赛德交通设备有限公司 一种分选筛
CN104941895B (zh) * 2015-07-28 2017-10-10 钦州市奥佳华新能源科技有限公司 一种筛料振动机构
CN106000857A (zh) * 2016-06-23 2016-10-12 杨叙宝 一种水果筛选机

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE735341C (de) * 1935-04-25 1943-05-12 Heinrich Schieferstein Vorrichtung zur Erzeugung unharmonischer Schwingungen
GB1380069A (en) * 1971-12-09 1975-01-08 Simpson Co Orville Stop motion screening apparatus and method
DE2345163C2 (de) * 1973-09-07 1975-08-07 Fa. Ludwig Jabelmann, 3110 Uelzen Sortiereinrichtung für Kartoffeln u. dgl
DE3208184C1 (de) * 1982-03-06 1983-10-06 Daimler Benz Ag Spannvorrichtung fuer einen Huelltrieb,insbesondere Riementrieb
US4699713A (en) * 1986-03-07 1987-10-13 Tieben James B Seed cleaner

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111468388A (zh) * 2020-04-15 2020-07-31 新沂新硕混凝土有限公司 一种混凝土废料环保回收筛分装置

Also Published As

Publication number Publication date
DE19641449C2 (de) 2002-11-28
DE19641449A1 (de) 1998-04-09
EP0835695A3 (fr) 1999-04-21
EP0835695B1 (fr) 2002-04-17
DE59707028D1 (de) 2002-05-23

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