DE202014008433U1 - Active and passive double role sorters - Google Patents

Abstract

Size sorter with rotating rollers (14) for potatoes, onions, citrus fruits and other agricultural products, characterized in that the sorting takes place between the roller pairs (15).

Description

The mechanical sorting of agricultural products such as potatoes, onions, apples has long been known and state of the art.

Thus, already published the patent application 2012 654 dated 23.12.1971 an inventive "sorting machine for substantially spherical objects ... in which several, composed of individual profile discs with conically shaped edges, rotating profile rollers parallel to each other ..."

Another example is disclosed in the patent DD 231 502 A1 from 02.01.1986, whose invention has the goal "sorting and calibration of round and rolling fruits to make simultaneously ... The problem was solved by the fact that the fruits arranged in a horizontal sorting level profile rolls of two differentiated by the roller profile profile roller belts and then be removed by lowering a profile roller belt with smaller calibration holes in three fractions ... "

An inventive "sizing machine for at least approximately rotationally symmetrical objects, in particular spherical bulk goods ..." also contains the published patent application DE 3627 534 A1 from 12.03.1987. Here "zones of smaller and larger calibration slits ..." are used during the circulation of the calibration element. "The larger objects move on with the calibration element until the slot width has expanded sufficiently. Below the sorting line a collecting and transporting device is arranged, through which the sizes sorted objects ... are led out of the sorting section. "

A current innovative solution of a sorting machine for round sorting goods finally contains the published on 30.05.2012 EP 2 457 671 A2 ,

The present invention takes up the well-known principle of a roller sorter with rotating roller conveyor and attaches to it.

Traditional roller sorters with rotating roller conveyor sort between the individual sorter rollers.

New to the inventive solution compared to the prior art is that it works with active and passive rollers as a pair of rollers.

The role sorter according to the invention with active and passive role as a pair of rolls allows the extremely gentle product sorting of agricultural products such as potatoes, onions, apples and citrus fruits.

In this case, a rotating roller conveyor is divided with each pair mounted, ball-bearing active and passive rollers in preferably two to six sorting areas, each with associated rails.

The sorting according to the invention always takes place between two pairs of rolls, wherein before the sorting product is the active role, which runs on a running rail and is frictionally driven, while the passive role is without drive, but also ball bearings, which is why they are partially rotated by the product to be sorted becomes.

The passive roller thus exerts no frictional force on the product to be sorted. It can not pull the product through the sorting gap and cause damage to the sorting product, which is a major shortcoming of the previous systems.

The desired sorting size is infinitely realized by adjusting the track rail.

Various roll forms such as smooth roll or profile roll as well as different chain pitches enable the optimal sorting of different agricultural products in different size ranges.

According to the invention, the overflow via the machine can also be used as sorting area.

1 shows the entire system of the rotating roller conveyor ( 14 ) with roller pairs.

Shown is an example of the inventive solution for a total of 4 sorts ( 1 . 2 . 3 and 4 ) of the sorted material ( 10 ), specifically with three falling sizes and a fourth at the overflow ( 5 ).

The sorts ( 1 - 3 ) are separated by a separating edge ( 6 ) separated.

The climbing angle ( 19 ) in the sorting area of the machine is preferably 35 °.

The guides of the roller pairs in the sorting area 1-3 via rails ( 7 ) whose respective setting determines the size of the sorting gap / sorting hole between the pairs of rolls.

2 shows in sections two different sized sorting columns / sorting holes ( 22 ) between two successive pairs of rolls ( 15 ).

The "lifting" role ( 16 ) of the roller pair is driven.

The "moving in" role ( 20 ) is not it.

The arrangement of the track ( 7 ) in relation to the pairs of rolls ( 15 ) is infinitely adjustable ( 8th ) and determines the sorting size.

The sorting gap / sorting hole ( 22 ) results from the stepless sorting setting ( 8th ) between active ( 16 ) and passive ( 20 ) Role.

The gap within the roller pair is only 3-8 mm. There is no sorting here.

The drawings in 3 clarify, also in section, how the active roles ( 16 ) on the continuously adjustable track ( 7 ; 17 ) by positive drive forward.

They are arranged turning to the right.

Due to the frictional force of the surface of the respective sorter ( 11 . 12 ), a "lifting" of the sorted goods ( 10 ) causes so that too large parts of the sorted material can not pinch between the rollers.

The passive roles ( 20 ) can be performed without rotation or forward or reverse rotation.

For high performance and high sorting accuracy, the passive rollers ( 20 ) by a pressure rail ( 9 ) can be rotated slightly backwards in order to control the movement of the sorted material ( 10 ) on the entire sorting surface ( 21 ) increase.

At the same time, the sorted product can thereby optimally place over the sorting gap / sorting hole.

The forward or backward movement is frictionally mi low frictional force. The pressure force of the pressure rail ( 9 ) is adjustable.

Alternative to the pressure rail ( 9 ), the passive roller can also be adjusted by means of a speed-variable, circulating belt ( 18 ).

On the drive chain / drive belt ( 23 ) of the revolving roller conveyor ( 14 ), the passive roles ( 20 ) assembled. The active roles ( 16 ) are rotatable on both sides with a tab on the passive roller ( 20 ) and together form a pair of roles ( 15 ).

Depending on the shape, size and required sorting accuracy of the respective sorted goods ( 10 ) the revolving roller conveyor ( 14 ) with smooth ( 11 ) or profile rolls ( 12 ) equipped, what 4 represents.

In order to avoid earth adhesion to the sizing rolls, the sizing rolls are continuously swept by brooms ( 13 ) cleaned what the cutout 5 shows.

Thus, the sorting gap / sorting hole ( 22 ) as the basis of sorting unchanged.

In 6 is the lifting (lifting) of the active sorting roller ( 16 ) and thus the gentle lifting of the oversizes in the overflow ( 5 ) at the end of the sorting area ( 21 ).

7 shows a plan view of active role ( 16 ) and passive role ( 20 ) in extension of the variably configurable, entire sorting surface ( 21 ), Sorting gap / sorting hole ( 22 ) and drive chain / drive belt ( 23 ), in each case combined a smooth roller and a profile roller are used.

LIST OF REFERENCE NUMBERS

1

Sorting 1

2

Sorting 2

3

Sorting 3

4

Sorting 4

5

overflow

6

separating edge

7

runner

8th

stepless sorting adjustment

9

pressing rail

10

Be sorted / sorting goods

11

Smooth roller / sorting roll

12

Profile Role / sorting roll

13

cleaning broom

14

Circulating roller table

15

Pair of rollers, consisting of active and passive role

16

active roller / "lifting" roller (driven), rotating to the right

17

infinitely adjustable running rail

18

circumferential belt (speed change of the passive pulley)

19

Rising angle in the sorting area 35 °

20

passive roll / "pull-in" roll (not driven or backwards or forwards rotating)

21

sorting area

22

Sorting gap / sorting hole

23

Drive chain / drive belt

24

Running direction of the revolving roller conveyor

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DD 231502 A1 [0003]
• DE 3627534 A1 [0004]
• EP 2457671 A2 [0005]

Claims (8)

Size sorter with rotating rollers ( 14 ) for potatoes, onions, citrus fruits and other agricultural products, characterized in that the sorting between the pairs of rolls ( 15 ) he follows. Size sorter according to claim 1, characterized in that the roll "lifting" the sorting product ( 16 ) and the sorting product into the sorting hole "pulling in" role ( 20 ) is not driven, this role can be rotated backwards or forwards. Size sorter according to claims 1 and 2, characterized in that a circumferential roller conveyor ( 14 ) with paired active ( 16 ) and passive rollers ( 20 ) in preferably two to six sorting areas, each with associated rails ( 7 ) and separating edges ( 6 ) is divided. Size sorter according to claims 1 and 2, characterized in that the desired sorting size ( 8th ) steplessly by adjustment of the rails ( 7 ; 17 ) is realized. Size sorter according to claims 1 and 2, characterized in that also the overflow ( 5 ) is used for sorting via the machine. Size sorter according to claim 1 and 2, characterized in that the use of various roll forms such as smooth roll ( 11 ) and profile role ( 12 ) as well as various chain / belt divisions ( 23 ) enables the sorting of different agricultural products in different size ranges. Size sorter according to claim 1 and 2, characterized in that by a pressure rail ( 9 ) or a circulating belt ( 18 ) and the choice of the direction of rotation of the passive role ( 20 ) Influence on the sorting result is taken. Size sorter according to claim 1 and 2, characterized in that the sorting rollers in continuous passage by means of brooms ( 13 ) getting cleaned.

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