JPH0661532B2 - Wind sorting device in huller - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a wind sorting device that performs wind sorting on mixed rice after removal in a huller and finishing wind sorting on brown rice selected from the mixed rice. It is a thing.

[Conventional technology]

Rice bran removing device, rice husk wind selecting section for mixed rice after removing the rice with the removing machine, brown rice selecting apparatus for selecting brown rice from the mixed rice after wind selecting in the rice husk wind selecting section, and the brown rice A conventional wind sorting device in a hulling machine consisting of a finishing wind selection unit for brown rice from a sorting device is disclosed in, for example, Japanese Patent Laid-Open No. 59-46142. Are provided adjacent to each other, the suction port of the suction dust exhaust fan is connected to one side of the rice husk wind selection unit, and the suction air to the suction dust discharge fan causes both the rice husk wind selection unit and the finishing wind selection unit. It was to select the wind.

[Problems to be solved by the invention]

However, this conventional wind sorting device performs both wind selection of the rice husk wind selection unit and the finishing wind selection unit by the suction air to one suction dust collection fan, and the suction wind of the suction dust collection fan Since the wind pressure is far weaker than the wind pressure of the discharge wind from the suction dust collecting fan, the wind-selecting action in the chaff wind selecting section is low, and the finishing wind selecting section is located further upstream of the chaff wind selecting section. Therefore, in other words, since the finishing wind selecting unit is located farther than the suction port in the suction dust collecting fan, the wind selecting action in the finishing wind selecting unit is further reduced,
In order to improve the air selection effect in both the rice husk air selection section and the finishing air selection section, a large amount of suction air is required, so a large suction dust fan must be used. There is a drawback that the entire wind sorter including the selector is large.

An object of the present invention is to eliminate this drawback and to make it possible to reliably select even small rice in brown rice.

[Means for solving problems]

In order to achieve this object, the present invention provides "a dehulling device (2) for rice hulls, a rice husk wind sorting section (18) for mixed rice after dehulling with the dehutting device, and a wind in the rice husk wind sorting section. A brown rice sorting device (3) for sorting brown rice from the mixed rice after selection,
Finishing wind selection section for brown rice from the brown rice sorting device (2
0) and a hulling machine comprising:
The brown rice is made to flow down toward the brown rice gutter (29) below, while a closed air passage (21) is provided between one side of the rice husk wind selecting section and one side of the finishing wind selecting section. ) Through a suction port of the suction / dust fan (22) on the other side of the rice husk wind selection unit and the atmospheric air intake (23) on the other side of the finishing wind selection unit (20). And, in the middle of the closed air passage (21), a cross-flow fan (24) is arranged so that its suction side is the finishing wind selection section and its discharge side is the rice husk wind selection section. Of the air passages (21), the suction air passage (21 ') from the finishing wind selecting unit (20) to the cross flow fan (24) is provided from the brown rice gutter (29) in the finishing wind selecting unit to the cross flow fan (24). ) Diagonally upward toward the inner bottom surface of the suction air duct,
1) is provided. "

[Action]

According to this structure, in the finishing wind selection part (20), the brown rice flowing down toward the brown rice gutter (29) therebelow is sucked into the crossflow fan (24) from the atmospheric air intake (23) on the other side. The blown air blows sideways, and the suction air to the cross flow fan (24) causes the wind selection of the brown rice in the finishing wind selection section. In this case, the suction side of the cross flow fan (24) is used. Is communicated with the finishing wind selecting section (20) through the closed passage (21), the suction air that blows through the finishing wind selecting section is chaffed against the finishing wind selecting section as in the prior art. It is much stronger than in the case of one suction dust collecting fan at a position far from the wind selecting part.

For this reason, the small rice and dust in the brown rice are carried by the suction air duct (2) while being carried by the suction air to the cross flow fan (24).
1 ') can be reliably removed so as to be sucked into the cross-flow fan (24), and the rice that has been sucked by this suction wind and the dust is small rice inside the inclined suction air passage (21'). When separated from the suction wind, the suction wind passage (2
It falls on the inner bottom surface of 1 ') and is collected so as to enter the small rice gutter (31).

On the other hand, the crossflow fan (2
The discharge air from 4) will be blown with a strong wind pressure through the closed air passage (21), and the wind blown from the crossflow fan to the rice husk air selection section in this way is
Since it is immediately sucked into the suction dust exhaust fan (22), the wind speed in the rice husk air selection unit rises to a level that is not comparable to the case where one suction dust exhaust fan is used as in the conventional case, and the rice husk wind is increased. It is possible to remarkably improve the wind selecting action in the selecting section.

〔The invention's effect〕

Therefore, according to the invention: Both the finishing wind selection section and the rice husk wind selection section
This can be improved by the combined use of the suction dust fan and the cross flow fan, and it is not necessary to significantly increase the suction air volume in the suction dust fan, while the cross flow fan used in combination with the suction dust fan is Since it is smaller than the dust fan, it is possible to reduce the size of the entire wind sorting apparatus including the suction dust exhaust fan and the cross flow fan.

． Since the cross flow fan is provided in the air passage that communicates the finishing wind selection unit and the rice husk wind selection unit, the fan case in this cross flow fan can also be used as a component of the air passage. It is possible to simplify the structure of the air passage with a flow fan.

． Small rice and dust in the brown rice from the brown rice sorting device can be reliably removed while collecting the small rice, so that the sorting performance for brown rice can be greatly improved without causing a loss of the small rice. Since a sorting net is not used for sorting brown rice, the brown rice sorting apparatus can be downsized, and further, the wind sorting apparatus as a whole can be further downsized.

Has the effect.

[Embodiment] The present invention will be described below with reference to the drawings of an embodiment.
The figure shows a vertical front view of the entire huller, and this huller is
With a horizontally long box-shaped wind sorting device 1, a removing device 2 placed on the upper left side of the wind sorting device 1, and a rotary brown rice sorting device 3 placed on the upper right side of the wind sorting device 1. The whole is composed.

The removing device 2 includes a case 4 with a paddy supply hopper 5,
The case 4 is composed of a pair of removing rolls 6 and a manually opening-and-closing type shirter 7 provided between the removing rolls 6 and the paddy supply hopper 5.

Further, the rotary type brown rice sorting apparatus 3 includes a first sorting cylinder 9 and a second sorting cylinder 1 which are horizontally installed in a casing 8 in two steps.
9, and both of the selection cylinders 9 and 10 are formed with a large number of recesses 11 and 12 having a size enough to fit brown rice on the inner surface thereof, and are rotationally driven in a direction indicated by an arrow in FIG.
In both the sorting cylinders 9 and 10, brown rice gutters 13 and 14 with spiral conveyors extending in the axial direction of the sorting cylinders and mixed rice gutters 15 and 1 with spiral conveyors that also extend in the axial direction of the sorting cylinders.
6 and 6 are provided respectively.

The wind sorting device 1 has a box-shaped casing 17 which is long next to it.
The casing 17 is provided with a rice husk wind selecting section 18 for the mixed rice after being removed by the removing device 2 at a position substantially directly below the removing device 2 in the casing 17.
A finishing wind selection unit 20 for the brown rice from the rotary type brown rice sorting device 3 is provided at a position close to the right side plate 19 of each of the rice husk wind selection unit 18 and the finishing wind selection unit 20. It communicates via a passage 21.

In the left end of the casing 17, a suction dust collecting fan 22 is provided.
The suction port of the suction dust exhaust fan 22 is the rice husk wind selection unit 1
8, the right side plate 19 of the casing 17 is provided with an inlet 23 for intake of atmospheric air to the finishing wind selecting section 20.

In the air passage 21 that communicates the rice husk wind selecting unit 18 and the finishing wind selecting unit 20, a cross-flow fan 24 is formed so that its suction side is the finishing wind selecting unit 20 and its discharge side is the rice husk wind selecting unit 18. Set up.

In addition, a mixed rice gutter 25 with a spiral conveyor 26 and a shinai rice gutter 27 with a spiral conveyor 28 are provided in the lower part of the rice husk wind selecting section 18 and the finishing wind selecting section 20. The brown rice gutter 2 with the spiral conveyor 30
9 are provided respectively, and the suction air passage 21 ′ of the air passage 21 to the cross flow fan 24 is inclined obliquely upward from the brown rice gutter 29 in the finishing wind selecting section 20 toward the cross flow fan 24, A small rice gutter 31 with a spiral conveyor 32 is provided on the inner bottom surface in the middle of the suction air passage 21 '.

Then, when the paddy is fed into the paddy feeding hopper 5 in the padding device 2 during the padding removal selection work, the paddy is removed in the padding device 2 and flows down in the rice husk wind selection section 18 directly below the paddy. The rice husk is sorted by the discharge air from the cross-flow fan 24 and the suction air to the suction dust fan 22 so that the husk is sucked by the suction dust fan 22, and the mixed rice after the husk selection is mixed rice gutter. 25, after being transferred to the upper part by a bucket type conveyor 33 standing from one end of the mixed rice gutter 25, and then flowing down in a supply chute 34 provided vertically on the side surface of the bucket type conveyor 33. , The distribution valve 35 and the distribution chute 3 in the supply chute 34
6 and 37, they are equally distributed and supplied to one end of the mixed rice gutters 15 and 16 in both the sorting cylinders 9 and 10 of the rotary brown rice sorting apparatus 3.

In this way, the mixed rice gutters 15 in both sorting cylinders 9 and 10,
The mixed rice evenly distributed and supplied to one end of 16 enters the supply side 9 ', 10' in both selection cylinders 9, 10 from the other end of the mixed rice receiving troughs 15, 16 and is rotated by the rotation of the selection cylinder. The flow which is scraped up to a certain height and then dropped to the bottom is repeated to form a fluidized bed of a certain thickness, and the discharge side 9 ″, 10 ″
In the meantime, the brown rice in the mixed rice is fitted into the recesses 11 and 12 while being lifted to a relatively high position and then dropped, so that the brown rice in the brown rice gutters 13 and 14 is , While only the unpolished rice is sorted, the insides of the discharge sides 9 ″, 10 ″ of both sorting cylinders 9, 10 are mostly paddy, and the removing device 2 through the chute 38.
Is discharged to the paddy supply hopper 5 and the removing operation is performed again.

The brown rice that has entered the brown rice gutters 13 and 14 in both the sorting cylinders 9 and 10 reaches the finishing wind selecting part 20 through the chutes 39 and 40 at one end of the brown rice gutters 13 and 14 and the supply gutter 41, In this finishing wind selecting section 20, when flowing down toward the brown rice gutter 29 located therebelow, the crossflow fan 2
The small air and dust are removed by the suction air to 4 so as to be on the suction air, and then flow down to the brown rice gutter 29, and are taken out of the machine by the bucket type conveyor 42 from the brown rice gutter 29, while the cross flow The small rice among the small rice and dust that has been sucked by the suction air to the fan 24 is separated from the suction air when flowing through the inclined suction air passage 21 ′ and falls to the inner bottom surface of the suction air passage 21 ′. It is collected so that it can enter the Komai gutter 31.

In the wind sorter 1, reference numeral 43 in the drawing denotes a portion of the discharge air of the crossflow fan 24 branched from the crossflow fan 24 of the airflow path 21 from the discharge airflow passage 21 ″. The reference numeral 44 designates a back circulation air passage, 44 designates an oscillating sorting plate for the selection of rice husks, 45 designates a bypass air passage for the selection of rice, and A wire net 46 is stretched so that the inside of the brown rice gutter 29 can be seen from the entrance 23. 47
Is a motor for rotationally driving the removing device 2 and the rotary brown rice sorting device 3, and at the same time, rotationally driving both fans 22, 24 and various spiral conveyors in the wind sorting device 1.

BRIEF DESCRIPTION OF THE DRAWINGS The drawings show an embodiment of the present invention, FIG. 1 is a vertical sectional front view of the entire huller, FIG. 2 is a sectional view taken along line II-II of FIG. 1, and FIG. It is a III-III sectional view taken on the line of FIG. 1 ... Wind sorting device, 2 ... Removing device, 3 ... Rotating brown rice sorting device, 18 ... Rice husk wind sorting unit, 20 ... Finishing wind sorting unit, 21 ... Wind passage, 21 '... Suction Wind channel, 22 ... suction dust fan, 24 ... cross flow fan, 29 ... brown rice gutter,
31 …… Komii Higuchi.

Claims (1)

[Claims] 1. From a dehulling device (2) for rice hulls, a rice husk wind sorting section (18) for the mixed rice after dehulling with the dehulling device, and a mixed rice after wind selection in the rice husk breeze selecting section. In a hulling machine comprising a brown rice sorting device (3) for sorting brown rice and a finishing wind selection part (20) for brown rice from the brown rice selection device, the finishing wind selection part is provided with brown rice under the brown rice gutter (29). ), The one side of the chaff wind selecting section and the one side of the finishing wind selecting section communicate with each other through a closed air passage (21), A suction dust collecting fan (2
At the suction side of 2), the other side of the finishing wind selecting section (20) is made into the air intake (23), and in the middle of the closed type air passage (21), a cross flow fan is provided. (24) is arranged such that its suction side is the finishing wind selection section and its discharge side is the rice husk wind selection section, and further, the crossflow fan (20) from the finishing wind selection section (20) in the air passage (21). The suction air passage (21 ') leading to 24) is connected to the brown rice gutter (2
9) A wind sorting device in a rice huller, which is inclined obliquely upward from the cross flow fan (24) and has a small rice gutter (31) provided on the inner bottom surface in the middle of the suction air passage.