JPH0728804Y2 - Plant seed peeling device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to a peeling device for supplying frozen seeds of a plant between a pair of rollers to remove the outer skin portion from the plant seed.

<< Prior Art >> The seed surface of a plant is covered with a hard outer coat. When the seed surface is covered with a hard outer coat, it is impossible to germinate all at once in a short time, and there is a problem that variations occur in the harvest time.

Therefore, in recent years, seeds have been provided that can be germinated all at once while shortening the germination time by performing treatment for removing the hard outer coat from the surface of the seeds.

Conventionally, as a device for performing such a treatment, liquefied gas is applied to the seeds being conveyed to freeze the seeds, and the frozen seeds are fed to a huller, and then the dehulling roller of the huller is used to coat the seeds. There is provided a device in which the seed and the outer coat are separated by a wind separation mechanism of a hulling machine.

<Problems to be solved> However, in the conventional device, the outlet part of the transfer device using the spiral transfer shaft is airtightly connected to the entrance part of the hulling machine, and the frozen seeds sent from the transfer device are directly removed by the removing roller. Since the seeds and the ultracold cold air are simultaneously fed into the dewaxing roller portion, the dewaxing roller may be directly contacted and cooled by the ultralow temperature cold air. Since the de-sticking roller is made of synthetic resin such as polyurethane or rubber, there is a problem that when the roller is cooled by ultra-low temperature, the material of the roller is hardened or becomes brittle and durability is reduced. there were.

It is an object of the present invention to provide a seed peeling device in which cold air does not directly act on the debarking roller, focusing on such a point.

<Means for Solving the Problems> In order to achieve the above-mentioned object, the present invention connects a gas separation tank to the outlet of a spiral transfer device, and arranges a derailing roller at the bottom of the gas separation tank. It is characterized in that an ejector-type gas discharge mechanism is connected to the gas separation tank.

<Operation> In the present invention, a gas separation tank is connected to the outlet of the spiral transfer device, a derailing roller is arranged at the bottom of the gas separation tank, and an ejector-type gas discharge mechanism is connected to the gas separation tank. Therefore, the cool air sent together with the seeds from the spiral transfer device is separated from the seeds in the gas separation tank and is discharged to the outside of the gas separation tank by the ejector type gas discharge mechanism.
As a result, only the frozen seeds are fed to the dewaxing roller, so that the dewaxing roller is not exposed to the liquefied gas. For this reason, it is possible to prevent the debarking roller from being damaged by curing due to a temperature drop.

<< Embodiment >> A drawing is a longitudinal cross-sectional view of an essential part showing an embodiment of the present invention.

This peeling device comprises a spiral conveying device (1) and a wind selecting device (2).
Are arranged above and below, and the outlet part (3) of the spiral transfer device (1) is connected to the inlet part of the wind separator (2) through a gas separation tank (4).

The spiral transfer device (1) has a spiral transfer shaft (6) rotatably disposed inside a tubular casing (5),
An object-to-be-processed inlet (7) for introducing seeds with a hull is opened on the upper surface at the upstream side of the object-to-be-conveyed, and liquid nitrogen or the like is liquefied on the lower side in the direction of transportation than the object-to-be-treated inlet (7). The gas inlet (8) is opened, and the outlet tube is led out to the lower surface of the casing (5) on the lower side in the transport direction to form the outlet (3). A hopper (9) is connected to the object inlet (7) through an opening / closing controller (10), and a liquefied gas supply source (11) such as a liquid nitrogen cylinder is connected to the liquefied gas inlet (8). ) Is connected. In addition, the reference numeral (1
2) is a pressure relief port for preventing the pressure in the casing from rising. When the pressure in the casing rises,
The transfer of cold heat containing liquefied gas is suppressed, and the seeds cannot be cooled sufficiently.

The gas separation tank (4) is formed in a hopper shape, the upper end portion of which is connected to the outlet portion (3) of the spiral transfer device (1), and the lower end portion of which is provided with a rotary valve (13). The debarking device (14) is fixed to the outlet of the rotary valve (13), and the outlet pipe (15) led out of the debarking device (14) is connected to the inlet of the wind selecting device (2). is there.
Also, from the upper side wall of the gas separation tank (4), the gas vent pipe (1
7) is led out, and by connecting the leading end of the degassing pipe (17) to the compressed air passage (19) from the blower (18), ejector by high pressure air flowing in the compressed air passage (19) The ejector type gas discharge mechanism (20) is configured so that the low temperature gas in the gas separation tank (4) is sucked into the compressed air passage (19) by the action.

The debarking device (14) is configured by arranging a pair of debarking rollers (21, 21) that rotate in opposite directions in a state in which contact and separation can be adjusted. The number of rotations is different. Therefore, the seed that has entered between both rollers (21) (21) is
The outer skin will be stripped off.

In the seed peeling device having the above-described configuration, the seed peeling device is exposed to the cold heat of the liquefied gas ejected into the spiral transfer cylinder while being conveyed by the spiral transfer device, becomes a frozen state, and gas is discharged from the outlet part of the spiral transfer cylinder. It is discharged to the separation tank. At this time, the liquefied gas is discharged together with the seed that is the transported object, but the cooled seed and the liquefied gas are separated into the seed and the gas in the gas separation tank connected to the outlet of the spiral transfer device, and the gas is an ejector type. It is discharged outside the separation tank by the gas discharge mechanism. As a result, only the cooled seeds are sent to the de-sticking roller, and the gas component having a large cold heat does not act on the de-sticking roller, so that the de-sticking roller may be cooled by the gas-containing cold heat. It is possible to prevent the rollers from falling down and being damaged.

The ejector type gas discharge mechanism is adjusted so that the gas separation tank has a slightly positive pressure. This is because the seed temperature rises when the gas separation tank becomes atmospheric pressure or negative pressure.

The frozen seeds sent to the descaling roller come into contact with the peripheral surface of the descaling roller having different rotation speeds to peel off the outer skin, and the peeled outer skin and the seed portion are brought into the wind-selecting device,
The outer skin portion and the seed portion will be separated and sorted.

<Effect> In the present invention, the gas separation tank is connected to the outlet of the spiral transfer device, the debarking roller is arranged at the bottom of the gas separation tank, and the ejector gas discharge mechanism is connected to the gas separation tank. Therefore, the cold air sent together with the seeds from the spiral transfer device is separated from the seeds in the gas separation tank and discharged to the outside of the gas separation tank by the ejector type gas discharge mechanism. As a result, only the frozen seeds are fed to the dewaxing roller, so that the dewaxing roller is not exposed to the liquefied gas. For this reason, it is possible to prevent the debarking roller from being damaged by hardening due to a temperature drop, improving the durability of the debarking roller, and preventing the seed coat from being unable to be peeled off.

[Brief description of drawings]

The drawings are longitudinal sectional views of the essential portions showing an embodiment of the present invention. 1 ... spiral transfer device, 2 ... wind selection device, 3 ... (1) outlet, 4 ... gas separation tank, 5 ... (1) cylindrical casing, 6 ... (1) spiral Conveyor shaft, 20 ...... Ejector type gas discharge mechanism, 21 …… Debarking roller.

Claims (1)

[Scope of utility model registration request] 1. A spiral conveying device (1) having a spiral conveying shaft (6) arranged in a cylindrical casing (5) and an outlet portion (3) of the spiral conveying device (1), which are arranged continuously. It has a descaling roller (21) and a wind sorting device (2) arranged continuously at the outlet of the descaling roller (21), and supplies the liquefied gas to the spiral transport device (1) during transportation. A plant seed peeling device, in which liquefied gas is applied to a plant seed to freeze the seed, and the frozen seed is fed to a de-sticking roller (21) to peel off the seed hull, the spiral carrying device (1) Gas separation tank (4) at the outlet (3)
And a derailing roller (21) arranged at the bottom of the gas separation tank (4) and an ejector-type gas discharge mechanism (20) communicated with the gas separation tank (4). Seed peeling device.