EP0492737A1 - Verfahren und Vorrichtung zum Sortieren von Kartoffeln - Google Patents

Verfahren und Vorrichtung zum Sortieren von Kartoffeln Download PDF

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Publication number
EP0492737A1
EP0492737A1 EP91203388A EP91203388A EP0492737A1 EP 0492737 A1 EP0492737 A1 EP 0492737A1 EP 91203388 A EP91203388 A EP 91203388A EP 91203388 A EP91203388 A EP 91203388A EP 0492737 A1 EP0492737 A1 EP 0492737A1
Authority
EP
European Patent Office
Prior art keywords
potato
potatoes
channel
shaped channel
square
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
EP91203388A
Other languages
English (en)
French (fr)
Other versions
EP0492737B1 (de
Inventor
Jan Middel
Hendrik Cornelis Pieter De Vries
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.)
Zijlstra and Bolhuis BV
Original Assignee
Zijlstra and Bolhuis BV
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 Zijlstra and Bolhuis BV filed Critical Zijlstra and Bolhuis BV
Publication of EP0492737A1 publication Critical patent/EP0492737A1/de
Application granted granted Critical
Publication of EP0492737B1 publication Critical patent/EP0492737B1/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
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
    • B07C5/04—Sorting according to size
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C2501/00—Sorting according to a characteristic or feature of the articles or material to be sorted
    • B07C2501/009—Sorting of fruit

Definitions

  • This invention relates to a process for sorting potatoes based on square size, and to an apparatus for carrying out the process.
  • potatoes are sorted into different size classes by applying the so-called square size principle. Potatoes are then sorted by means of reciprocating riddles having square openings. A drawback of this prior sorting method is that there is a relatively great risk of the potatoes being damaged by the shaking riddles.
  • the square size of a potato can be defined as the length of the side of the smallest square opening the potato can pass through. In the international potato trade this square size is generally used as a standard.
  • the potatoes are mostly sorted into a number of classes, e.g., a first class of potatoes having a square size below 35 mm, a next class of potatoes having a square size ranging from 35 to 45 mm, subsequent classes 45/55 mm, 55/65 mm and, e.g., a class of potatoes having a square size above 65 mm.
  • the object of this invention is to meet the above need.
  • a process of the above type is characterized according to the invention by passing the potatoes through a V-shaped channel, measuring of each potato the distance between the point of the V-shape and the highest point of the potato and determining the square size of the potato belonging to the measured distance.
  • An apparatus for sorting potatoes based on square size is characterized according to the invention by at least one V-shaped channel; feeding means for feeding potatoes to the V-shaped channel; at least one sensor for detecting the distance between the highest point of a potato located in the channel, which sensor applies a signal corresponding to the detected distance to a control device capable of controlling guide means for passing the potato in question to a collection of potatoes having a square size corresponding to the detected distance.
  • Fig. 1 schematically shows a potato sorting apparatus 1 with three superjacent riddles 2, 3, 4 having square passages.
  • the upper riddle 2 has the largest passages and the lower riddle 4 the smallest.
  • the riddles carry out a reciprocating movement so that potatoes successively come to lie on the riddle in different positions and a potato that does not fall through the riddle openings is conveyed to a discharge end of the riddle.
  • the potatoes are passed from a chute 5 to the upper riddle.
  • the potato schematically shown at 6 is so large that it cannot even pass through the openings of the upper riddle 2 and this potato eventually falls from the riddle, as indicated at 7.
  • the potato indicated at 8 can pass through the openings of the upper riddle but not through the openings of the second riddle 3 and falls from the second riddle at 9.
  • the potato shown at 10 falls through the upper riddle 2 and the second riddle 3 and leaves the third riddle at 11.
  • the smallest potato shown at 12 falls through the openings of all the riddles, as indicated at 13.
  • the smallest potatoes must pass all the shaking riddles so that they run a substantial risk of being damaged, such as, e.g., blueing.
  • the apparatus 15 shown in Fig. 2 has, in a horizontal arrangement, successive riddles 16 through 18 with riddle openings ever increasing from the chute 19. In such an apparatus the largest potatoes 20 must pass through all the riddles 20 before leaving the apparatus. In this case, too, there is a substantial risk of damage.
  • Fig. 3 illustrates the square size principle.
  • the square size M is given by the length of the side of a square opening 12 through which a potato 23 can just pass.
  • Fig. 4 schematically illustrates the fundamental idea underlying the invention.
  • Fig. 4 shows, in cross section, a V-shaped channel 30 containing a purely spherical potato 31.
  • the square size is indicated by v.
  • the height h of the highest point of the purely spherical potato located in the channel is also indicated.
  • v 2r, so there is a fixed relation between the channel height h and the square size. Consequently, once the channel height has been measured, the square size is also known.
  • An apparatus for determining the channel height and thereby the square size may consist of, e.g., a plurality of juxtaposed channels having an opening angle of 62.5°. For each channel there must be at least one sensor which detects the channel height and then generates a signal to open a flap arranged in the bottom or side wall of the channel, which flap allows the measured potato to pass to a receptacle in which potatoes having a square size which is within a predetermined range and corresponds to the measured channel height are collected. When a potato has a channel height belonging to another range of square sizes, a corresponding other flap is opened.
  • each channel a rotatable discharge channel or pipe, which, in response to the signal generated by the sensor or sensors, passes the potatoes to a receptacle belonging to the measured size, optionally through further channels or other transport means.
  • Fig. 7 schematically shows in side elevation view an apparatus for sorting potatoes based on square size by measurement of the channel height.
  • the apparatus comprises a plurality of channels which are slightly inclined downwardly, and one of which, indicated by 40, is visible.
  • the channel 40 is supported by a frame 41 and is provided with a chute 42 for feeding in potatoes to be sorted.
  • Disposed above the channel is a schematically shown sensor 43 capable of detecting the channel height of a passing potato 44.
  • the sensor may be, e.g., a spring-suspended sensor 45, as shown, but the sensor may also be a plurality of light barriers arranged in the channel at different heights, each of which comprising a light source and a photosensitive cell disposed opposite the light source.
  • the sensor 43 generates a signal, preferably electric, corresponding to the measured channel height, which signal is applied to a control device 46 capable of controlling a plurality of flaps 47, 48, 49, which are arranged further down the channel, as indicated by a broken line 59.
  • the control device 46 selectively opens one of the flaps or no flap at all, so that the potato just measured falls at one of the receptacles or compartments 51 through 54.
  • the channel may be provided with transport means to promote the movement of the potatoes through the channel. As shown in Fig. 7, this is achieved by an endless rope, band or belt 55 extending in the longitudinal direction of the channel wall. It is also possible to compose both channel walls essentially of suitably supported conveyor belts or to use a vibratory channel. Furthermore, a plurality of sensors may be used. A sensor may further comprise a roll or an endless tape as a sensor element to minimize the risk of damage to a potato. Also, a channel may be set in a reciprocating movement transverse to its longitudinal direction under a sensor.

Landscapes

  • Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)
  • Sorting Of Articles (AREA)
  • Preparation Of Fruits And Vegetables (AREA)
EP91203388A 1990-12-21 1991-12-20 Verfahren und Vorrichtung zum Sortieren von Kartoffeln Expired - Lifetime EP0492737B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL9002854A NL9002854A (nl) 1990-12-21 1990-12-21 Werkwijze en inrichting voor het sorteren van aardappels.
NL9002854 1990-12-21

Publications (2)

Publication Number Publication Date
EP0492737A1 true EP0492737A1 (de) 1992-07-01
EP0492737B1 EP0492737B1 (de) 1995-08-30

Family

ID=19858201

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91203388A Expired - Lifetime EP0492737B1 (de) 1990-12-21 1991-12-20 Verfahren und Vorrichtung zum Sortieren von Kartoffeln

Country Status (7)

Country Link
EP (1) EP0492737B1 (de)
AT (1) ATE127045T1 (de)
DE (1) DE69112589T2 (de)
DK (1) DK0492737T3 (de)
ES (1) ES2079556T3 (de)
GR (1) GR3017272T3 (de)
NL (1) NL9002854A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112090757A (zh) * 2019-09-10 2020-12-18 杭州富阳新堰纸制品有限公司 一种包装领域使用的球形物品筛选装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108480225A (zh) * 2018-03-14 2018-09-04 孟晓涛 一种水果分拣机
CN110816906A (zh) * 2019-10-21 2020-02-21 四川省农业科学院经济作物育种栽培研究所 智能化芦笋分拣包装设备

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2023789A1 (de) * 1969-06-24 1971-01-07 Schweizerische Industrie Gesell schaft, Neuhausen am Rheinfall (Schweiz) Vorrichtung zum Ausscheiden von auf einer Forderbahn bewegten Gegenstanden, deren Hohe ein zulassiges Maß überschreitet
US3603457A (en) * 1969-05-28 1971-09-07 John F Flodin Electronic product-sizing apparatus
US3744628A (en) * 1971-02-01 1973-07-10 Grace W R & Co Classifying method and apparatus
FR2528972A1 (fr) * 1982-06-22 1983-12-23 Duneau Patrick Dispositif opto-electronique de mesure du diametre des fruits
US4462496A (en) * 1983-04-05 1984-07-31 Apl Anderson, Inc. Method and apparatus for separating spheres from non-spheres

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3603457A (en) * 1969-05-28 1971-09-07 John F Flodin Electronic product-sizing apparatus
DE2023789A1 (de) * 1969-06-24 1971-01-07 Schweizerische Industrie Gesell schaft, Neuhausen am Rheinfall (Schweiz) Vorrichtung zum Ausscheiden von auf einer Forderbahn bewegten Gegenstanden, deren Hohe ein zulassiges Maß überschreitet
US3744628A (en) * 1971-02-01 1973-07-10 Grace W R & Co Classifying method and apparatus
FR2528972A1 (fr) * 1982-06-22 1983-12-23 Duneau Patrick Dispositif opto-electronique de mesure du diametre des fruits
US4462496A (en) * 1983-04-05 1984-07-31 Apl Anderson, Inc. Method and apparatus for separating spheres from non-spheres

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112090757A (zh) * 2019-09-10 2020-12-18 杭州富阳新堰纸制品有限公司 一种包装领域使用的球形物品筛选装置
CN112090757B (zh) * 2019-09-10 2021-09-21 杭州富阳新堰纸制品有限公司 一种包装领域使用的球形物品筛选装置

Also Published As

Publication number Publication date
DE69112589T2 (de) 1996-02-08
EP0492737B1 (de) 1995-08-30
ES2079556T3 (es) 1996-01-16
GR3017272T3 (en) 1995-11-30
DE69112589D1 (de) 1995-10-05
ATE127045T1 (de) 1995-09-15
DK0492737T3 (da) 1996-01-22
NL9002854A (nl) 1992-07-16

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