JP2010115148A - Device for peeling skin of ginkgo nut - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable a kernel of a ginkgo nut to be automatically taken out by solving problems wherein an operation for peeling the skin of the ginkgo kernel requires much time and effort because the operation is carried out by manually taking out the kernel with the skin by fingers after crashing the shell of the ginkgo nut, and means for soaking the kernel in water, boiling the kernel with hot water or heating with a microwave oven are required for peeling the skin. <P>SOLUTION: The device for peeling the skin of the ginkgo nut can automatically take out the kernel of the ginkgo nut by feeding the ginkgo nut from which a part of the shell is removed, to a shell-removing means of the ginkgo nut one by one by an automatically feeding mechanism 8 to remove the shell of the ginkgo nut by compressed gas jet and turbulent stirring to separate the ginkgo nut into the shell and the kernel with the skin of the ginkgo nut, dropping the product to a shell-separating means of the ginkgo nut at the lower row, collecting the shell by blasting air, feeding only the kernel with the skin of the ginkgo nut to a skin-peeling means of the ginkgo nut, and peeling and separating the skin by the compressed gas jet and minute protrusions 5 on the inner wall to enable the kernel of the ginkgo nut to be automatically taken out. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a ginnan skinning device.

For skinning of ginnan, use commercially available ginnan husks or pliers to split the ginnan shell, take out the thin-fruited fruits with your fingers, soak the thin-fruited fruits in water or hot water, or heat the range to ginnan. The method of extracting the fruit is generally known. It is also said that it is sweeter to bake ginnan directly, or to take out ginnan fruit by heating it in a range, but it takes time and effort. On the other hand, ginnan fruit has different softness, crushed and easy to crack depending on the variety, harvest time, storage period, etc., and it is difficult for human fingers to peel thin skin without damaging ginnan fruit. Moreover, it seemed difficult to put an automatic machine into practical use. Peeling of peanuts, which are similar foods, is disclosed in Patent Documents 1 and 2, but both are steamed, the shell is removed, and the peeled fruit is sandwiched between the opposing rollers and forced. However, it is a technique that cannot be applied to the work of peeling the thin skin of ginnan, which is soft and fragile.
JP-A-11-206357 JP 2007-236259 A

  The current skin removal work is difficult to perform automatically due to the softness, ease of crushing, and easy cracking of ginnan, so fry it in a frying pan, heat it in the range, and then use ginnan shells or pliers. It takes a lot of time and effort to split the ginnan shells and to remove the thin-skinned fruit with fingers. Furthermore, since the skin is dipped in water or boiled, it is highly likely that the sweet and valuable ingredients of ginnan are damaged. The object of the present invention is to split the shell with the ginnan shell splitting tool or pliers, etc., and then peel off the shell and the skin automatically from the ginnan lacking a part of the shell. The purpose is to provide a large amount of food faster and more quickly.

  The invention described in claim 1 is composed of a cylindrical container having an open portion at the top and bottom, a shutter that opens and closes the open portion, and an injection nozzle that injects compressed gas into the container. And has a shelling means for forming a gas gap between the shutter and the end face of the opening when the shutter is closed. A ginnan skinning device is provided.

  The invention according to claim 2 is composed of a cylindrical container having an open portion at the top and bottom, a shutter for opening and closing the open portion, and an injection nozzle for injecting compressed gas into the container, and the container is a ginnan And several protrusions with a height equal to or less than the thickness of the thin skin of ginnan on the inner wall. When the shutter is closed, it is used for gas emission between the shutter and the end face of the opening. Provided is a ginnan skinning device characterized by having a thin skinning means for forming a fine gap.

  The invention according to claim 3 comprises: the shell peeling means according to claim 1; the means for separating the shell by air blow located at the subsequent stage of the shell peeling means; and the thin skin peeling means according to claim 2. A ginnan skinning device is provided.

  Traditionally, since it was soft, crushed, easy to break, and difficult to automate, the skin removal work, which used to rely entirely on humans, was taken out from the ginnan lacking a part of the shell, and the skin was peeled off. , Ginnan fruits can be picked up automatically and instantly without using human fingers, and can be peeled off without damaging ginnan fruits, so that high quality ginnan fruits can be provided to the food market according to customer requirements. .

  In the past, ginnan fruit, which was likely to damage the original sweetness and valuable ingredients of ginnan fruit, by immersing in water or heating with hot water or a range, in a fresh raw state Because it can be taken out, it can be used and expanded as a new ingredient that can be baked or fried directly.

  FIG. 1 shows a cross-sectional view of Ginnan. Ginnan has a structure of shell a, thin skin b, and fruit c from the outside. Yellow-green endosperm called ginnan fruit c is wrapped in a thin skin b and protected on the outside by a hard shell a. A cavity s is formed between the shell a and the thin skin b, and the cavity s becomes larger toward the tip of ginnan, and the degree of adhesion between the inner wall of the shell a and the thin skin c is weakened. Completely separated. Although the present invention enables peeling by blowing compressed gas into the cavity s, the size of the cavity s and the degree of adhesion with the inner wall of the shell a, the softness of the actual c, the ease of being crushed, and the ease of cracking are as follows. Since the type, size, shape, harvest time, storage time, etc. of ginnan differ, selection of the skinning conditions of the present invention is important.

  FIG. 2 shows a schematic view of a single ginnan shelling means lacking a part of the shell described in claim 1 of the present invention. The configuration includes a cylindrical first container 1a, a first upper shutter 2a, a first lower shutter 3a, and a first injection nozzle 4a attached obliquely above the first container 1a. The first upper shutter 2a and the first lower shutter 3a can be opened and closed. When the first lower shutter 3a is closed and one ginnan lacking a part of the shell is inserted, the first upper shutter 2a and the first lower shutter 3a are closed. 2a is closed and compressed gas is injected from the 1st injection nozzle 4a. A minute gap g1 is provided between the upper end surface of the first container 1a and the first upper shutter 2a, and a minute gap g2 is provided between the lower end surface of the first container 1a and the first lower shutter 3a. Ginnan, which is partly missing from the shell that has been put into one container 1a, is generated by the injection of the compressed gas injected from the first injection nozzle 4a into the cavity s, peeling off the shell a and the thin skin b. Is separated into a shell c and a thin shell c by the turbulent gas flow.

  FIG. 3 shows a schematic view of the thin skin peeling means of one ginnan according to claim 2 of the present invention. The configuration includes a cylindrical second container 1b, a second upper shutter 2b, a second lower shutter 3b, and a second injection nozzle 4b mounted substantially horizontally below the second container 1b. The second upper shutter 2b and the second lower shutter 3b can be opened and closed. When the second lower shutter 3b is closed and the c1 with a thin skin is introduced, the upper shutter 3b is closed and the second shutter 3b is closed. Compressed gas is injected from the injection nozzle 4b. Further, a minute gap g3 is provided between the upper end surface of the second container 1b and the second upper shutter 2b, and a minute gap g4 is provided between the lower end surface of the second container 1b and the second lower shutter 3b. It is a gas outlet. The difference from the ginnan shelling means described in claim 1 is that the second injection nozzle 4b is mounted substantially horizontally below the second container 1b, and the microprojections 5 are arranged on the inner wall of the second container 1b. is there. When a thin c1 fruit is introduced into the second container 1b, the compressed gas is injected from the second injection nozzle 4b and rubbed against the microprojections 5 on the inner wall by the injection force and the gas flow generated by the injection. 1 peels off the thin skin b shown in FIG. 1 and separates the thin skin b and the fruit c.

  FIG. 4 shows a sorting cylinder 6 which is a ginnan shell separating means shown in claim 3 of the present invention after the shelling means of one ginnan lacking a part of the shell described in claim 1 of the present invention. A schematic diagram is shown in which the ginnan skinning means described in claim 2 of the present invention is arranged at the subsequent stage. One ginnan lacking a part of the shell thrown into the shell peeling means is peeled off the shell a and separated into a shell c and a fruit c with a thin skin. The separated shell “a” and thin crusted fruit “c” are sorted in the sorting cylinder 6 by air blowing, and the shell “a” is recovered. On the other hand, the fruit c with thin skin is supplied to the ginnan skin peeling means at the subsequent stage, and the skin b is peeled off and separated from the fruit c.

  FIG. 5 shows a schematic view of the ginnan peeling apparatus of the present invention. From the upstream, the parts feeder 8, the square pipe chute 9, the ginnan shell peeling means described in claim 1, the sorting cylinder 6 of the shell separating means described in claim 3, the blower 11, the shell recovery cylinder 12, the shell recovery container 13, the fall The guide 7 is composed of the ginnan skin peeling means described in claim 2 and the actual c collection container 14. The parts feeder 8 feeds the ginnan, which lacks a part of about 200 shells at a time, to the ginnan skinning means one by one with a stopper with a sensor through the chute 9. The shell a is peeled off by the ginnan shelling means, separated into the shell a and the fruit c with thin skin, dropped into the sorting cylinder 6, and the shell a and the fruit c with skin are sorted, and the shell a is a shell recovery cylinder. 12 is recovered in the shell recovery container 13. On the other hand, the fruit c with thin skin is supplied to the skin peeling means via the drop guide 7, the skin b is peeled off, and the fruit c is separated and collected in the collection container 14.

  The ginnan shell peeling means according to claim 1 of the present invention and the ginnan skin peeling means according to claim 2 will be described in detail. The approximate dimensions of the cylindrical first container 1a and the second container 1b were 44 mm in inner diameter and 35 mm in height because one ginnan lacking a part of the shell to be charged was used. Further, the fine gap g1, the fine gap g2, the fine gap g3, and the fine gap g4, which are the emission ports of the jet gas described above with reference to FIGS. 2 and 3, are about 0.1 mm. The first injection nozzle 4a of the ginnan shelling means is configured so that the ginnan lacking a part of the shell actively moves due to gas turbulence in the first container 1a, and the compressed gas to be injected uniformly hits the first container. It is installed upward at a position of about 30 degrees with respect to the axial center on the inner wall side of 1a. On the other hand, the second spray nozzle 4b of the ginnan skin peeling means is attached along the inner wall at a substantially right angle to the axis below the cylindrical second container 1b. In addition, on the inner wall of the cylindrical second container 2b, several minute projections 5 having a height of about 0.2 mm, which is equal to or less than the thickness of the ginnan skin, are provided. However, the dimensions, quantities, and mounting positions are not limited.

Since Ginnan has different softness, ease of crushing, and ease of cracking, depending on the variety, collection time, storage period, etc., the selection of the peeling condition for removing the fruit without breaking or crushing is the Ginnan peeler of the present invention. This is where I put the most power. The number of ginnans that lacked a part of the shell to be added was one, the cylindrical container was decided to be several times the number of ginnans, and the injection pressure and injection time of the gas supplied to the injection nozzle could be finely adjusted. is there. The reason why the number of ginnans that lacked a part of the shell is set to one is that the actual softness, fragility, and ease of crushing differ depending on the varieties of ginnan handled, the time of collection, the storage period, etc. Due to the difference in shape, when two or more are thrown in, the fruit with a soft thin skin that has been peeled off is scratched or cracked with a peeled shell and a ginnan that lacks a part of the remaining shell without being peeled, Since it was crushed, the number of charged containers was set to 1, and the size of the cylindrical container corresponding to it was determined. Further, in the actual skinning operation, the storage period after harvesting is particularly important, and the injection pressure and the injection time of the compressed gas influence the actual quality to be taken out. If the spray pressure is too weak, it will not peel off, and if it is too strong, cracking and crushing will occur. Even if the spraying pressure is weak, it can be peeled off if the spraying time is extended, but the actual surface to be taken out is damaged and the quality is deteriorated. For this purpose, the ginnan lacking a part of the shell was subjected to experiments while changing the spraying pressure and spraying time for the storage period that has a high influence on the skinning conditions, and the skinning state was confirmed. Table 1 shows the results. Immediately after harvesting, it is actually soft, and it is easy to break and crush, but if the spraying pressure is low and the spraying time is long, the fruit can be taken out in good condition. As the storage time becomes longer, the jetting pressure is increased to shorten the jetting time, and the skin can be peeled off under stable conditions in about two weeks. FIG. 6 shows a range of selection conditions for skinning of Ginnan, and FIG. 7 shows the relationship between the injection pressure and the injection time. However, these are only guidelines, and it is important to select appropriate skinning conditions with reference to this figure after carefully examining the state of the ginnan to be added. Also, this condition and range are current and have the potential to be reviewed and improved in the future.

Relationship between storage period and skinning conditions

  Each device of the present invention and the inner wall of the passage through which the ginnan passes and contacts are severely contaminated because the ginnan is in a raw state. Furthermore, considering that food is handled, cleaning and cleaning of the main part at least once / day is an essential condition when using the apparatus. Therefore, each unit must be replaceable with one touch, and must have a structure and shape that can be easily cleaned and washed. Also, since it is necessary to remove dust and dirt that has adhered several times during the period of use, it is necessary to make a structure that is difficult to get dust and dirt, and to be able to easily clean and wash. Fixing is reduced, a large number of fitting methods are used, and the frame is a thin wire structure that avoids flat plates.

  A unit capable of supplying a simple compressed gas by using each of the ginnan shelling means lacking a part of the shell according to claim 1 and the ginnan thinning means according to claim 2 of the present invention alone. Further, it is possible to provide a simple and inexpensive ginnan skinning device by adding a ginnan shell and thin skin scattering prevention and recovery device.

  Since the shell peeling means, the sorting means and the thin skin peeling means described in claim 3 of the present invention increase the output per unit time, a plurality of them can be installed in parallel, and the production efficiency can be easily increased. In addition, multiple installations in series can improve the production efficiency and at the same time improve the actual quality of the ginnan finally taken out by changing the pressure of the injection gas and the injection time.

  The ginnan peeling apparatus of the present invention employs a parts feeder and a linear chute as a ginnan supply method that lacks a part of the shell, but there are also a simple cassette type and a pick-and-place type. In addition, the lower shutter and the upper shutter have a rotary type in addition to the direct-acting slide type, which is an effective means for advancing the miniaturization of the apparatus. However, neither is limited, and more effective combinations can be adopted according to the purpose.

  At present, ginnan fruits are taken out by hand, and thin-skinned peanut shells are soaked in water for a long time, boiled, or heated in a range. This is time consuming and time consuming, and also has the potential to damage the original sweetness component of ginnan fruit, and the method of automatically taking out ginnan fruit without damaging it as in the present invention is groundbreaking. It is a thing. It is unavoidable now that ginnans that are provided to the food market and households with hard shells attached can be provided in the state of raw ginnans, which can be expected to expand the market. On the other hand, if Ginnan is made a fruit of Ginnan, problems related to food safety arise, so it is necessary to carefully handle quality assurance in consideration of storage conditions, storage period orders, and supply system.

Ginnan cross section Schematic diagram of shelling means Schematic diagram of skin peeling means Schematic diagram of peeling means with separation means Schematic diagram of ginnan skinning device Ginnan skinning condition selection range Relationship between injection pressure and injection time

Explanation of symbols

1a First container 1b Second container 2a First upper shutter
2b 2nd upper shutter 3a 1st lower shutter 3b 2nd lower shutter 4a 1st injection nozzle 4b 2nd injection nozzle 5 Micro projection 6 Sorting cylinder 7 Drop guide 8 Parts feeder 9 Supply chute 10 Mini compressor 11 Blower blower 12 Shell collection cylinder 13 Shell collection container 14 Actual collection container g1 Minute gap g2 Minute gap g3 Minute gap g4 Minute gap a Shell b Thin skin c Actual s Cavity

Claims (3)

It is composed of a cylindrical container having upper and lower open parts, a shutter that opens and closes the open part, and an injection nozzle that injects compressed gas into the container,
The container has a volume several times that of ginnan, and when the shutter is closed, a minute gap for gas discharge is formed between the shutter and the end surface of the opening part.
A ginnan skinning device comprising one ginnan shelling means lacking a part of a shell. It is composed of a cylindrical container having upper and lower open parts, a shutter that opens and closes the open part, and an injection nozzle that injects compressed gas into the container,
The container has a volume several times that of Ginnan, and includes several protrusions having a height equal to or less than the thickness of the thin skin of Ginnan on the inner wall,
When the shutter is closed, a minute gap for gas discharge is formed between the shutter and the end surface of the open part,
A ginnan skinning device comprising one ginnan skinning means. The shell peeling means according to claim 1, the means for separating the shell by air blow located at the subsequent stage of the shell peeling means, and the thin skin peeling means according to claim 2,
A ginnan skinning device characterized by comprising: