JP2001000163A - Welsh onion processing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a Welsh onion processing apparatus capable of surely removing inedible skins even of the Welsh onions which are unevenly grown depending collection timing, place of production and plowed land. SOLUTION: This apparatus is provided with plural dividing boards 2 arranged with spaces between themselves where a Welsh onion can be placed on a pair of endless chains 1a, 1b which are each placed on the upper side and the lower side, and move synchronously on a rectangular pass way. The apparatus is also provided with endless transport belts 15a, 15b to clamp the leaves of the Welsh onion inserted between the dividing boards 2 and move them. A pair of side wall boards 21a, 21b are placed in such a manner that each dividing board 2 can pass between them, and the side wall boards 21a, 21b are each provided with a nozzle unit for blowing pressurized fluid on a passing Welsh onion. The nozzle unit consists of the unit 22A of a multiple-tube single-stage arrangement construction, the unit 22C of a multiple-tube multiple- stage arrangement construction and the unit 22B of a single-tube single-stage arrangement construction, which are placed directing the downstream side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a green onion processing apparatus, and more particularly to a green onion processing apparatus for stripping an unedible skin covering a surface of a white root portion of a green onion excavated from a field. Things.

[0002]

2. Description of the Related Art An onion processing apparatus for stripping the skin of onions has been proposed in Japanese Patent Application Laid-Open No. 10-108657.

In this prior art, a plurality of partition plates are arranged in a pair of endless transport members which are installed vertically and move synchronously in a rectangular shape at intervals perpendicular to the transport direction so that the white roots of the green onions can be accommodated with a margin. A leaf portion of a green onion inserted between the partition plates above the upper endless transport body on the other side in a direction transverse to the longitudinal direction of the rectangular shape, and synchronized with the pair of endless transporters. The endless conveyor belt is provided so that the pair of side walls partially overlapped below the endless conveyor belt when viewed in a direction perpendicular to the endless conveyor belt so that the partition plates pass therebetween. And a plurality of nozzles for spraying a pressurized fluid to at least one of the side wall plates onto a green onion inserted between the respective partition plates are provided side by side in a passing direction of the respective partition plates, and a plurality of nozzles are provided. Transfer of green onions Shirane part from per point that is divided leaves of green onion in accordance with the, by sequentially blowing toward the foundation unit that has grown of hair root is to remove the skin.

[0004]

In the above prior art, a plurality of nozzles of the same shape are arranged as a plurality of nozzles for spraying a pressurized fluid onto onions. For this reason, it was sometimes impossible to peel off the epidermis that could not be used for food.

[0005] Then, when the situation in which the epidermis could not be peeled off was examined, the following growth state of onion was confirmed.

[0006] That is, depending on the growing season and the place of production of the onion, the onion has a difference of being thin, thick, or soft or hard. Also, depending on how the seedlings are planted, it is bent from the root to the white root. It also depends on the condition of fertilization,
Some are slightly swelled from the root to the white root, if not as much as onions.

As described above, since the onion is not uniform, the skin cannot be reliably peeled off by the conventional technique in which the same one is juxtaposed as a nozzle, regardless of the sampling time, the place of production or the field. There was something.

[0008] Further investigations and examinations have shown that growth non-uniformity is caused by differences in the harvest time, production area, and field, and almost all the onions collected from the same field during the short days. Under uniform growth conditions, no extreme disparities were seen.

Therefore, an object of the present invention is to provide an onion processing apparatus capable of reliably peeling off the unedible skin covering the surface of the white root portion of the onion excavated from the field. It is in.

[0010] Another object of the present invention is to provide an onion treatment apparatus capable of reliably stripping an unedible epidermis even from an onion that has grown unevenly depending on the time of collection, the place of production, and the field. To provide.

[0011]

A feature of the apparatus of the present invention that achieves the above object is that a pair of endless transport members which are installed vertically and move synchronously in a rectangular shape are provided with a plurality of endless transport members perpendicular to the transport direction. Are arranged at intervals so that the white roots of the green onions can be accommodated with a margin, and the green onions inserted between the respective partition plates above the upper endless transport body on the other side in the direction traversing the rectangular longitudinal direction. An endless conveyance belt is provided which moves in synchronism with the pair of endless conveyance bodies while sandwiching the leaves, and partially overlaps below the endless conveyance belt when viewed vertically with the endless conveyance belt. A pair of side wall plates are provided so that each of the partition plates passes therebetween,
At least one of the side wall plates is provided with a nozzle for spraying a pressurized fluid to a green onion inserted between the partition plates, wherein the nozzle on the upper endless carrier side is a base of the green onion. A first nozzle unit in which a plurality of nozzles for spraying a pressurized fluid at a desired wind pressure or flow rate sufficient to strip off the first nozzle unit are arranged in a line in the direction of passage of each partition plate, and the lower endless carrier side The plurality of nozzles that are located downstream of the first nozzle unit in the direction of passage of the partition plates and blow a pressurized fluid at a higher air pressure or a higher air volume than the respective nozzles in the first nozzle unit are each of the plurality of nozzles. The second nozzle units are arranged in a line in the direction of passage of the partition plate, and the first nozzle unit is arranged between the first nozzle unit and the second nozzle unit. Nozzles and a plurality of nozzles of the same type that is composed of a third nozzle unit juxtaposed with double row,
Each nozzle unit is provided with a shut-off valve for stopping the spraying of the pressurized fluid at one time or for each nozzle.

A feature of the apparatus of the present invention that achieves the above object is that each of the nozzles constituting the first nozzle unit and the third nozzle unit has a plurality of small holes that blow out a pressurized fluid in a line. It is a double tube structure that is lined up,
The individual nozzles constituting the second nozzle unit have a single tube structure provided with one hole for blowing out a pressurized fluid.

A feature of the apparatus of the present invention that achieves the above object is that each of the nozzles constituting the first nozzle unit is located on the downstream side in the direction of passage of each of the partitioning plates and is located on the upstream side. The individual nozzles that constitute the third nozzle unit that is located on the lower endless transport body side and that is juxtaposed in the passage direction of each partition plate are located at the same front-rear position or even the same vertical position.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An onion processing apparatus according to one embodiment of the present invention shown in FIGS. 1 to 8 will be described in detail below.

[0015] Onion generally has 5 to 7 leaves in the field, but at present, it is the outer one after being dug up by the cultivation producer in order to be placed on the distribution channel and provided to consumers at the store. Is cut off with three inner leaves attached to the white root, leaving a slight green area. Hereinafter, this is referred to as onion from which the epidermis is peeled.

In each figure, 1a and 1b are installed vertically and move in a rectangular shape synchronously (moving clockwise in FIG. 1).
An endless chain constituting a pair of endless transport bodies.
Perpendicular to the transport direction of these endless chains 1a, 1b,
The plurality of partition plates 2 are arranged at intervals such that the white roots of the green onions can be accommodated with a margin. In addition, the endless chains 1a, 1b
Although the transport rails and the drive system are illustrated in the drawings, a specific description will be omitted to avoid complication. The partition plate 2 is a baseball home base type in which the lower part is a strip shape and the upper part is wider than the lower part (see FIG. 2). 3 is an endless chain 1
This is a gear that rotates a and 1b. 4 is installed above the upper endless chain 1a and is arranged from one side (the lower side in FIG. 1) to the other side (the upper side in FIG. 1) in the rectangular longitudinal direction.
This is a belt conveyor that transports green onions over.

On one side (left side in FIG. 1) in the direction transverse to the longitudinal direction of the rectangular shape in which the endless chains 1a and 1b move, long onions on the belt conveyor 4 are inserted between the front and rear partition plates 2. This is a work place where three to five workers PW are arranged. In FIG. 1, the left side of the belt conveyor 4 is lower,
In FIG. 2, the right side is downward, that is, it is inclined in the width direction toward the worker PW in the work place. This is to make it easier for the worker PW at the work place to hold the green onion on the belt conveyor 4 by hand and put it between the partition plates 2. Note that the belt conveyor 4 may be installed flat without being inclined. Further, the moving direction of the belt conveyor 4 is such that the endless chains 1a, 1
b and the moving direction of the partition plate 2. When an operator (not shown) puts onions on the carry-in conveyor 5, the onions fall onto the belt conveyor 4 and are transported by the belt conveyor 4. The green onions missed by the operator PW from the belt conveyor 4 fall onto the carry-out conveyor 6 and are collected in the receiving box 7, and when a certain amount of the green onions is collected, the worker (not shown) transfers the green onions onto the carry-in conveyor 5 again. Put on.

Each partition plate 2 has an endless chain 1a, 1b outside the rectangular shape on which the endless chain 1a, 1b moves.
Are provided respectively. Accordingly, when the partition plate 2 orbits at the gear 3, it once spreads radially and keeps a constant interval when it moves straight (moves) straight. Reference numeral 11 denotes an endless chain provided below the lower endless chain 1b so as to move in synchronization with the pair of endless chains 1a and 1b, and has an appropriate length (area) located between the partition plates 2. ) To support the receiving plate 12 of the root of the onion that is put between the partition plates. Receiving plate 1 as well as each partition plate 2
Reference numerals 2 are provided on the endless chain 11 outside the rectangular shape on which the endless chain 11 moves.

As shown in FIG. 2, when the operator PW picks up the onion WO from the belt conveyor 4 by hand and puts it between the partition plates 2, the onion WO has a receiving plate 12 below the root of the hair. Do not fall for. If the hair root does not reach the receiving plate 12 and is caught halfway between the partition plates 2,
When each partition plate 2 orbits at the gear 3 and spreads radially, the snags are released and fall, and the root of the hair reaches the receiving plate 12,
The lower end position of each onion WO is automatically aligned. Also,
The receiving plate 12 is provided with protrusions 12a for preventing the onion WO from coming off before and after the moving direction. Reference numeral 13 denotes a gear for rotating the endless chain 11, but a portion overlapping with the gear 3 is not shown in order to avoid complication. Synchronous movement of the endless chain 11 and the endless chains 1a and 1b of the receiving plate 12 will be described later.

Reference numeral 14 denotes an apparatus frame for supporting the endless chains 1a and 1b, the belt conveyor 4, the endless chain 11, and the like.

Reference numerals 15a and 15b denote endless transport belts.
A green onion inserted (inserted) between the partition plates 2 above the upper endless chain 1a on the other side (right side in FIG. 1) in the direction transverse to the longitudinal direction of the rectangular shape in which the endless chains 1a and 1b move. The leaf of the WO is pinched and moves in synchronization with the endless chains 1a and 1b (downward in FIG. 1). As shown in FIG. 3, the endless transport belts 15a, 1
5b has an appropriate length located between the partition plates 2 so that the endless chains 16a, 16b and the endless chains 16a, 16b can circulate, and meshes with the leaves of the onion WO in a zigzag shape. A large number of holding pieces 17a, 17b to be held
, And one holding piece 17b is movably supported by the other 17a. Therefore, the onion WO can be securely held in accordance with the size of the leaf portion of each onion WO so as not to fall.

Reference numerals 18a and 18b denote endless transport belts 15a,
15b (substantially each endless chain 16a, 16b). Endless conveyor belts 15a, 15b
Are separated at the upper orbital point in FIG. 1, and the holding pieces 1 are moved in accordance with the downward movement of each onion WO in FIG.
The distance between 7a and 17b gradually narrows, and the leaves of each onion WO are zigzag-shaped. The regulation of the gap between the holding pieces 17a and 17b is performed by a gear not shown in the figure to avoid complication.

Reference numerals 21a and 21b denote a pair of side walls, which are provided below the endless transport belts 15a and 15b so as to partially overlap the endless transport belts 15a and 15b when viewed vertically. The partition plate 2 can pass between the side wall plates 21a and 21b by the endless chains 1a and 1b. As shown in FIG. 3, nozzles 22a for blowing out compressed air, which is a pressurized fluid, on the side wall plates 21a and 21b to peel the skin of the green onions,
22b is provided so that the position may decrease from upstream to downstream. Each of the nozzles 22a and 22b can be appropriately adjusted in height position and blowing angle as shown by arrows by position adjusting mechanisms 23a and 23b. In addition,
The nozzles 22a and 22b are a general term for a plurality of nozzles coded corresponding to the side wall plates 21a and 21b, and their individual configurations will be described later in detail.

Reference numeral 31 denotes a rotating cutting blade for cutting the root of the onion WO inserted between the partition plates 2, and 32 denotes a cutting blade 31.
Endless chain 1 under each partition plate 2 passing before and after
a, 1b, which is an endless transport body that is moved in synchronization with the end plates, and is formed by bending a crank-shaped plate 32a at a central portion and stacking the ends so as to insert the end portions as shown in FIG. A plurality of V-shaped long onion receiving portions 32b are formed at intervals between the partition plates 2. Reference numeral 33 denotes a plurality of pressing members such as a sponge for pressing a white root portion, which is an upper portion of a hair root portion of the onion WO, on the V-shaped long onion receiving portion 32b.
Although each pressing body 33 is arranged so as to overlap vertically,
No driving source is provided, and the onion WO rotates on the movement of the onion WO, and the onion WO is attached to the downstream pressing body 33 so as to be handed over.
Will be transferred.

When the white root portion of the onion WO is fixed by the V-shaped onion receiving portion 32b and the pressing body 33, the endless chain 11 and the receiving plate 12 are positioned upstream of the cutting blade 31 as shown in FIG. And is transported along a route approaching the upstream (lower position in FIG. 1) of the workplace. The orbital distance of the endless chain 11 that drives each receiving plate 12 is determined so that each partition plate 2 and each receiving plate 12 move at the same speed.
Therefore, at the upstream position of the work place, each receiving plate 12 moves again at the same speed as each of the partition plates 2 and does not drop the received green onions.

Reference numerals 35a and 35b denote a pair of cylindrical rolls arranged at an angle to the moving direction of the onion WO. The rolls of the onion WO peeled off by the compressed air blown out from the nozzles 22a and 22b and hang down. Pinch and tear off. Reference numerals 36a and 36b denote brushes for peeling the skin OS of the green onion WO entangled with the rolls 35a and 35b.
5a, 35b and brushes 36a, 36b rotate in reverse. Three
Reference numeral 7 denotes a rotating cutting blade for cutting the leaves of the green onion sandwiched between the endless conveyor belts 15a and 15b below the endless conveyor belts 15a and 15b. Endless transport belt for cutting hair roots and leaves by cutting blades 31 and 37 and discharging leek WO aligned to desired length, endless transport for collecting excess leaves removed by cutting blade 37 The illustration of the endless transport belt for collecting the skin OS torn off by the belt and the rolls 35a and 35b is omitted.

Onions WO inserted between the partition plates 2 in the form of the partition plates 2 on both sides of the movement path of each of the partition plates 2 from the work place where the workers PW are arranged to the pair of side wall plates 21a and 21b. Is provided. As shown in FIG. 2, in the workplace, the inside of the moving path of each partition plate 2 is fixed, but the outside of the moving plate 4 is fixed.
The partition plate 2 is supported by the elastic member 43 so that the upper end is opened, and the partition plate 2 on which the worker PW moves.
Even if it is about to be caught between the
The upper end opens to prevent injury.

When the operator PW takes the green onions conveyed on the inclined belt conveyor 4 by hand and puts it between the partition plates 2, the receiving plates 12 align the lower positions of the green onions. When the lower positions are aligned, the endless transport belt 1
The holding pieces 17a, 17b in 5a, 15b hold the leaves of each green onion. Thereafter, the lower part of each onion is constrained by a pressing member 33 with a V-shaped onion receiving portion 32b provided on the endless transporting body 9 at intervals of the partition plate 2. If the root of the onion is bent, this pressing will straighten it straight. A cutting blade 31 at the root of the hair is provided downstream of the pressing body 10. The cutting blade 31 is rotated by a motor (not shown). The vertical position of the cutting can be controlled by a servomotor. That is, a sensor for detecting the thickness of the onion is installed upstream of the endless chain 1b conveyance path where the cutting blade 31 is installed, and the cutting blade 31 is raised by a servo motor when the thickness is thick, and lowered when it is thin. A sensor in which a plurality of light receiving elements are arranged in a horizontal or diagonal straight character shape and the thickness of which is determined by the number of light-shielded light receiving elements when an onion passes, can be used as a sensor.

The thickness of the root between the white root and the hair root of the onion is proportional to the thickness. About two to four epidermis are peeled off from the white roots while leaving three leaves on the onion dug up from the field. It is important to separate two to four epidermis from the root stem in order not to strip the epidermis and reduce the commercial value of the onion. Depending on the thickness of the onion,
For each green onion, two to four epidermis, along with a portion of the root stem and the follicles attached thereto, are cut off from the remaining root stem and white root. By leaving the root portion in the white root portion, drying of the white root portion is prevented, and the surface portion of the white root portion shrinks and the inner core does not protrude. Thus, the lower end is aligned.

Thereafter, nozzles 22a, 22b for blowing compressed air onto the onions are applied to the downstream side wall plates 21a, 21b.
Is provided, and the spraying direction is roughly 40 to 50
Pointed downward at an angle of degrees. As described above, the compressed air from the nozzles 22a and 22b at the highest position in the uppermost part is cut off by the hands of the cultivation producer 2
It is sprayed around the junction of four to four leaves. Then, the epidermis following the leaves is peeled and sags, and is gradually pulled down by the compressed air from the nozzles 22a and 22b moving to the lower value on the downstream side, and sags as shown in FIG. Although the partition plate 2 moves, microscopically, since the ventilation passages are simulated by the front and rear partition plates 2 and the left and right side wall plates 21a and 21b, the compression from the nozzles 22a and 22b is performed. The air flows as a high-speed flow down the pseudo ventilation path.
For this reason, the leaves and the epidermis that have been peeled and dripped are efficiently peeled off, and are torn off by the downstream rolls 35a and 35b. The root portion is cut off at one or two epidermis by the cutting blade 8 according to the thickness of the onion, and the leaves are sandwiched, so that the epidermis can be easily peeled off (tear off).

Thereafter, the leaves are cut off from the white roots by the cutting blade 37, and the green onions of equal length are transferred to an endless conveyor belt (not shown), and the excess leaves are dropped and collected. .

The structure of the nozzles 22a and 22b and the peeling of the skin will be described below.

FIG. 6 schematically shows each of the nozzles 22a and 22b by the nozzle 22. In FIG. 6, the right side is the upstream side where the partition plate 2 and the green onion WO move as indicated by the arrow, and the left side is the downstream side. Therefore, the upper side in FIG. 6 is the leaf side, and the lower side is the root side.

The nozzles 22 are arranged in the order of a first nozzle unit 22A, a third nozzle unit 22C, and a second nozzle unit 22B from the right side. The first nozzle unit 22A and the third nozzle unit 22C are constituted by individual nozzles 221 having a double-pipe structure shown in FIG. 7A, and the second nozzle unit 22B is constituted by a single-tube structure shown in FIG. 7B. It is composed of individual nozzles 222. The individual nozzle 221 has a plurality of small holes 221a at its tip arranged in a horizontal line, and the rectifying partition wall 22 is formed so that the compressed air blown out from each small hole 221a flows as straight as possible without spreading radially.
1b. The individual nozzles 222 are simply straight pipes. Tube trunk 22 of individual nozzle 221
1c and the individual nozzles 222 have the same diameter and send compressed air from a common supply source.
Since the amount of air blown out from 1a is blown separately, it is smaller than the amount of air blown out from the individual nozzles 222. Therefore, the skin peeling force exerted on the green onion by the flow of the blowing air becomes smaller as the air amount is smaller.

In the nozzle unit 22A, the individual nozzle 22
1 are arranged diagonally in one row, individual nozzles 221 are arranged in multiple rows and columns in the nozzle unit 22C, and individual nozzles 222 are arranged in a horizontal row in the nozzle unit 22B. This is the nozzle 2 on each side of the side wall plates 21a and 21b.
A similar arrangement is adopted in 2a and 22b.

The onion WO is based on the peeling of the epidermis from the leaves toward the root, and the results of examining the peeling force from the leaves will be described with reference to FIG.

In FIG. 8A, the wind pressure or air volume is plotted on the horizontal axis, and the difficulty of peeling the skin (the degree of difficulty in peeling) is plotted on the vertical axis. Curve A is a multi-tube individual nozzle 2 shown in FIG.
This is an example of a double-pipe single-stage arrangement configuration in which nozzles 21 are arranged obliquely in a row (side-by-side) as in the nozzle unit 22A of FIG. For comparison, the results of a single-stage arrangement in which the individual nozzles 222 in FIG. 7B are arranged (arranged) diagonally in a row like the nozzle unit 22A in FIG. In the double-pipe single-stage arrangement, the degree of skin peeling changes slowly and control is easy.
The nozzle unit 22A has a double-pipe single-stage configuration. This is advantageous also in avoiding this because the leaves are damaged if the leaves are soft and strong wind pressure or too much air flow causes the leaves to break.

Next, the nozzle unit 22C shown in FIG. 6 will be described. Before that, the examination result of the nozzle unit 22B will be described with reference to FIG. 8C.

The nozzle unit 22B is used to peel off the skin over a few centimeters from the root to the white root. The root is where the epidermis is integrated,
In addition, since it is bent or slightly swelled up to several centimeters as described above, it is impossible to easily peel off with a low air pressure and air volume in a double tube single-stage arrangement as shown by a curve E. It is possible, and as shown by the curve F, a single tube single stage arrangement is effective. However, since it is not long as the range of the white root portion, it is arranged in a single row of horizontal rows as shown in FIG. 6, but it may be arranged diagonally in one row.

The nozzle unit 22C is located between the two nozzle units 22A and 22B, is not soft or hard as a skin, and the peeling force is weak in the single-tube arrangement of the nozzle unit 22A, so that peeling is difficult. Area.
The length of the epidermis to be stripped is longer than that of the leaves and the root, and the epidermis gradually becomes harder toward the root. Therefore, as shown in FIG. 6, the arrangement of a plurality of individual nozzles in the moving direction of the partition plate (onion) was examined. As a matter of course, if a single tube is formed in multiple stages, as shown by the curve C, the peeling force is too strong and the change is abrupt, which may damage the onion. In the multi-tube multi-stage arrangement, as shown by the curve D, the degree of skin peeling changed gradually, and it was confirmed that the skin peeling was effective in this area. This means that even if the peeling force is not strong, it can be gradually peeled off, and the skin in this region can be reliably peeled off by taking into account the number of rows arranged and the number of vertical steps.

Based on the above considerations, the arrangement shown in FIG. 6, that is, the individual nozzles 221 constituting the nozzle unit 22A are located on the downstream side in the direction of passage of each partition plate 2 more than on the upstream side. Are also on the endless transport body 1b side, and the nozzle units 22B, 2B are arranged side by side in the passing direction of each partition plate 2.
It has been concluded that it is generally effective that the individual nozzles 222 and 221 constituting the 2C are located at the same front-back position or even the up-down position.

By the way, as described above, since onions grow in various ways depending on the time, place of production, field, etc., it is necessary that all of these can be processed as an onion processing apparatus. In view of this, it is necessary to provide a shut-off valve in the compressed air supply system which can individually or collectively blow out or stop the compressed air for each of the individual nozzles 221 and 222 and the nozzle units 22A to 22C. Good.

For example, since the growth is fast and the whole is soft and easy to peel off, the nozzle unit 2
It is not advisable to blow compressed air from all the individual nozzles constituting the 2C and 22B in terms of energy saving. In such a case, the nozzle units 22B are closed collectively, or the closing valves of some individual nozzles of the nozzle units 22C and 22B are closed. As an example, the blowing is stopped for the individual nozzles located below the dashed line A in FIG. 6 and the individual nozzles located above or to the left of the dashed line B in FIG.

Further, when the height is short and the whole is stiff, the nozzles 22a and 22b are provided with elevating means and spray angle adjusting means as shown in FIG. Since the entire nozzle unit 22A is closed at once and the leaf unit is also assigned to the nozzle unit 22C, the skin can be peeled off without waste.

Similarly, if the height is short and the whole is soft but the root is bent or swelled, the entire nozzle unit 22C can be closed. That is, most of the epidermis of the white root portion is separated from the leaf portion by the nozzle unit 22A.

Also, depending on the season, region, variety, etc.,
Some of the leaves are unexpectedly strong, and some of the nozzle units 22A of the above embodiment are difficult to peel off. Therefore, it is preferable to arrange the individual nozzles 222 beside the individual individual nozzles 221 and adjust their valves and regulators to facilitate the start of peeling.

As shown in FIG. 8, since the air pressure has the same tendency as the air volume, a regulator for adjusting the pressure of the compressed air may be installed in each individual nozzle or nozzle unit in addition to the closing valve. .

In the above embodiment, compressed air is used as the pressurized fluid. This takes into account cleaning after cleaning the device because the onion has mud, but water may be blown instead of blowing compressed air.

Further, a nozzle may be provided on at least one of the side wall plates for spraying a pressurized fluid onto the onion inserted between the partition plates.

Further, the installation of the discharge conveyor 6 is stopped,
Alternatively, a stopper may be provided, and the operator may take out the leek when the number of the onions is appropriately accumulated at the stopper.

[0051]

As described above, according to the onion treatment apparatus of the present invention, it is possible to reliably peel off the unedible skin covering the surface of the white root portion of the onion dug out of the field. Can be.

[Brief description of the drawings]

FIG. 1 is a schematic plan view showing a layout of an embodiment of an onion processing apparatus of the present invention.

FIG. 2 is a partial cross-sectional view showing a state in which onions are put into the onion processing apparatus shown in FIG.

FIG. 3 is a partial cross-sectional view showing a nozzle portion for peeling a green onion with the green onion processing apparatus shown in FIG. 1;

FIG. 4 is a schematic view showing a pressing body for restraining a white root portion of the onion by the onion processing apparatus shown in FIG. 1;

FIG. 5 is a view showing a roll for tearing off the skin of the onion peeled off by the onion processing apparatus shown in FIG. 1;

FIG. 6 is a view schematically showing the arrangement of the nozzles shown in FIG. 3;

FIG. 7 is a diagram showing a specific configuration of a nozzle shown in FIG.

FIG. 8 is a diagram for explaining a study result for obtaining a nozzle arrangement shown in FIG. 6;

[Explanation of symbols]

 1a, 1b, 11, 16a, 16b: Endless chain 2: Partition plate 15a, 15b: Endless transport belt 21a, 21b: Side wall plate 22a, 22b: Nozzle 22, 22A to 22C: Nozzle unit 221: Individual nozzle of double tube structure 222: Individual nozzle with single tube structure

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Satoshi Saito 46-1, Tomioka, Nakajo-cho, Kitakanbara-gun, Niigata Prefecture Inside the Nakajo Office of Hitachi Techno Engineering Co., Ltd. (72) Inventor Takeshi Ken Watanabe 46, Tomioka, Nakajo-cho, Kitakanbara-gun, Niigata No. 1 Hitachi Techno Engineering Co., Ltd. Nakajo Office (72) Inventor Kazuo Nakajima 3-45 Nanko Higashi 3-chome, Suminoe-ku, Osaka City, Osaka Prefecture Hitachi, Ltd. Kansai Regional Office System Sales Center (72) Inventor Eiichi Takahashi Osaka No. 32, Chaya-cho, Kita-ku, Osaka-shi Yanmar Agricultural Machinery Co., Ltd. Facility Headquarters Horticulture System Department F-term (reference) 4B061 AA03 BA03 CB02 CB16 CB22 CB23

Claims (3)

[Claims] 1. A pair of endless transporters which are installed vertically and move synchronously in a rectangular shape, and a plurality of partition plates are arranged perpendicularly to the transport direction at intervals such that the white roots of the green onions can be accommodated with a margin. On the other side in the direction traversing the longitudinal direction of the rectangular shape, the leaf portion of the onion inserted between the partition plates is sandwiched above the upper endless transport body and moved in synchronization with the pair of endless transporters. Endless transport belt is provided,
A pair of side walls that partially overlap with each other when viewed perpendicularly to the endless conveyance belt are provided below the endless conveyance belt so that the respective partition plates pass therebetween, and at least one of the side wall plates is provided. In a device provided with a nozzle for spraying a pressurized fluid onto a green onion inserted between the partition plates, the nozzle on the upper endless transporter side is desirably sufficient to peel off the base of the green onion. A first nozzle unit in which a plurality of nozzles for spraying a pressurized fluid at an air pressure or an air volume are arranged in a line in a direction of passage through each of the partition plates; The plurality of nozzles that are located downstream in the passage direction of each of the partition plates and blow the pressurized fluid at a higher air pressure or a larger air flow than each nozzle in the first nozzle unit are each of the plurality of nozzles. A second nozzle unit arranged in a line in the direction of passage of the plate, and a plurality of nozzles of the same type as the nozzles constituting the first nozzle unit are provided between the first nozzle unit and the second nozzle unit. Each nozzle unit is equipped with a shut-off valve that stops spraying of pressurized fluid at once or stops for each nozzle, or a regulator that controls the pressure of pressurized fluid. An onion processing device, characterized in that: 2. A multi-tube structure according to claim 1, wherein each of the first nozzle unit and the third nozzle unit has a plurality of small holes for blowing a pressurized fluid arranged in a line. An onion processing apparatus, wherein each nozzle constituting the second nozzle unit has a single pipe structure provided with one hole for blowing out a pressurized fluid. 3. The nozzle according to claim 1, wherein the individual nozzles constituting the first nozzle unit are located on the downstream side in the direction of passage of the respective partition plates below the upstream nozzles. The individual nozzles constituting the third nozzle unit arranged on the side of the endless conveyance body and juxtaposed in the direction of passage of the respective partition plates are located at the same front-back position or even at the same vertical position. .