JPS59182115A - Method of discharging remaining unhulled rice from unhulled rice conveyance gutter - Google Patents

Abstract

PURPOSE:To ensure the discharge of remaining unhulled rice from an unhulled rice conveyance gutter with a screw, by continuing the operation of the screw even after the conveyance of unhulled rice and injecting air up through the bottom of the gutter so that the remaining unhulled rice in the gutter is forced to irregularly rebound on the screw and the bottom of the gutter. CONSTITUTION:Even after the conveyance of unhulled rice, the rotation of a conveying screw 4 is continued. At the same time, a blower 6 is started to send a wind into a blowing chamber 5. The wind jets into an unhulled rice conveyance gutter 1 through the wind holes 7 of its bottom so that the unhulled rice remaining in the gutter is blown onto the conveyance screw 4 and guided in the direction of conveyance by the screw 4 while rebounding irregularly. As a result, the remaining unhulled rice is discharged at 3. Since the unhulled rice is caused to rebound irregularly, it is entirely discharged.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for smoothly removing the paddy remaining in the paddy transport gutter at the end of paddy transport in a paddy transport system equipped with an internally rotating transport screw and having a large number of blowholes in the bottom. The present invention also relates to a method for discharging residual paddy at a paddy transport rate that enables reliable discharging.

Conventionally, paddy conveyors equipped with internally rotating conveyor screws have been widely used in grain preparation machines such as paddy dryers and threshing machines. If the remaining paddy is left as it is, it will gradually solidify and accumulate, making the paddy transport value unusable, so it is necessary to completely discharge the residual powder in the paddy transport trough at the end of transport. For example, as a device for discharging the residual powder of paddy transport at the end of transport in a paddy transporter equipped with a rotating transport screw, for example,
There are those described in Japanese Utility Model Publication No. 26627 and Japanese Utility Model Publication No. 17558/1983, which were known before the filing of this application.

By the way, in the above-mentioned conventional paddy conveyor, an inclined hole is formed on the bottom surface to ventilate in the conveying direction, and the residual powder is moved and discharged by the wind pressure in that direction. As mentioned above, there is an inclined hole formed at the bottom of the rice bowl that blows out forced air in a certain direction, so the paddy that is in a position where the forced air does not blow on the surface formed by the inclined hole is It is not affected by the blowing action of forced wind, and as a result,
The reality was that it was not possible to remove all the remaining powder.

Therefore, in order to solve the above-mentioned drawback of the conventionally known rice husk conveying trough regarding residual paddy discharge, the present invention has been developed by drilling a large number of blowholes in the bottom of the rice husk conveying trough and blowing forced air against the conveying screw to remove the paddy. It is an object of the present invention to provide a method for discharging residual rice in a rice husk feeding trough that can reliably discharge all the remaining powder by continuing the rotation of the conveying screw even after the conveyance of the rice husks is completed.

In view of the foregoing, in order to achieve the above object, the invention has specifically developed a method for conveying paddy even after the paddy has been conveyed, in a rice husk conveying trough which is equipped with an internally rotating conveying screw and has a large number of blowholes in the bottom surface. While the screw continues to rotate, forced air is blown from the bottom of the rice husk feeder to the internal conveyance screw through the large number of blowholes, and this forced air rotates the paddy remaining in the paddy feeder. A method for discharging residual rice in a rice husk trough, which is characterized by guiding and discharging rice husks in the transport direction while causing diffuse reflection between the conveying screw and the bottom surface of the husks, and according to this method,
At the end of paddy transportation, the rice remaining in the chaff feeding trough is subject to forced lice that eject from the bottom of the chaff feeding trough toward the conveying screw, which creates a gap between the rotating conveying screw surface and the bottom of the chaff feeding trough. The repeated diffused reflections are guided in the arc feeding direction, and all residual powder in the paddy conveying trough can be smoothly and reliably discharged.

The method according to the invention will be explained below with reference to a preferred embodiment shown in the drawings of an apparatus for carrying out the method.

In the drawing, reference numeral 1 denotes a rice husk feeding gutter, and a paddy supply hopper 2 is connected to the supply side of the rice husk feeding gutter 1, and a paddy discharge port 3 is connected to its discharge side. A conveying screw 4 is rotatably mounted on the shaft. and,
A closed air blowing chamber 5 is formed on the bottom side of the rice husk feeding gutter 1, and a discharge port of a blower 6 is connected to one side of the air blowing chamber 5. A large number of blowholes 7 communicating with the blowing chamber 5 are bored therein. The large number of blowholes 7 are of a size that does not allow the paddy etc. to leak out and does not impede their movement, and the blowholes 7 are bored at appropriate pitches in an array or staggered manner.

- For example, it is appropriate to set the diameter of the blow holes 7 to 1.5 mm, the pitch between the blow holes 7 to 3 mm, and the open hole ratio to 22.6%.

Next, its effect will be explained.

Now, if you start the conveyance screw 4 and feed the paddy into the paddy supply hopper 2, the paddy will be transferred to the rotating conveyance screw 4.
The paddy is guided and conveyed, and continuously discharged from the paddy discharge port 3.

By the way, when the transfer of the paddy is finished, a small amount of paddy remains on the bottom of the chaff feeder 1, so it is necessary to discharge this residual powder. When the blower 6 is started to blow forced air into the air blowing chamber 5, the forced air is blown out from the blow hole 7 on the bottom of the rice husk feeding trough 1 toward the conveying screw 4 in the rice husk feeding trough 1. Therefore, the paddy 5 remaining in the transport gutter 1 is hit by the jet and is guided by the rotating transport screw 4 in the transport direction while exhibiting a diffused reflection shape. The remaining powder is discharged from the paddy discharge port 3. Since the residual powder in the rice husk feeding trough 1 exhibits a diffused reflection shape as described above, all the remaining powder in the rice husk feeding trough 1 can be smoothly and reliably discharged.

In the above case, either the blower 6 is started after the paddy has been conveyed to discharge the remaining powder, or the blower 6 is started together with the definite feed screw 4 to blow air while the paddy is being conveyed. Also, since there are a large number of rice grains in the rice husk feeder 1 during the transportation of paddy, almost no air is blown into the rice husk feeder 1 from the blowhole 7.
There will be no hindrance to the transportation of paddy.

[Brief explanation of drawings]

The drawings show an embodiment of a residual paddy discharge device in a rice husk feeder that implements the method of the present invention, and Fig. 1 shows an overall vertical sectional side view, and Fig. 2 shows a paddy conveyance path. FIG. 3 is a vertical cross-sectional view of the main part of the mortar, FIG. 3 is a vertical cross-sectional side view of the same as above, FIG. 4 is a vertical front view of the main part showing the remaining paddy discharge state, and FIG. DESCRIPTION OF SYMBOLS 1... Rice husk feeding trough, 2... Paddy supply hopper, 3... Paddy discharge port, 4... Conveyance screw, 5... Air blowing chamber, 6
...Blower, 7...Many blowholes Patent applicant Kaneko Agricultural Machinery Co., Ltd. 7- Figure 2 Figure 4 Figure 3 Figure 5

Claims (1)

[Claims] In a paddy conveyor that is equipped with a rotating conveyor screw inside and has a large number of blowholes in the bottom, the rotation of the conveyor screw is continued even after the paddy has been conveyed, and the bottom surface of the paddy is heated through the many blowholes. Forced air is blown to the inner conveying screw, and this forced air diffusely reflects the paddy remaining in the paddy conveying gutter between the rotating conveying screw and the bottom of the paddy conveyor, and moves it in the conveying direction. A method for discharging residual paddy during paddy transportation, which is characterized by causing the paddy to be discharged by guiding it to the paddy.