JPS6138672A - Air selector in rice huller - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a wind sorting device that performs wind sorting on mixed rice after culling in a huller, and finishing wind sorting on brown rice sorted from the mixed rice. It is something.

[Conventional technology]

A paddy tax culling device, a rice husk wind sorting section for mixed rice after culling in the culling device, a brown rice sorting device for sorting brown rice from the mixed rice after wind sorting in the rice husk wind sorting section, and the brown rice. A conventional wind sorting device in a huller, which consists of a finishing wind sorting section for unpolished rice from a sorting device, has a rice husk wind sorting section and a finishing wind sorting section, as described in, for example, Japanese Patent Application Laid-open No. 59-46142. are installed adjacent to each other, and the suction port of the suction dust exhaust fan is communicated with one side of the rice husk wind sorter, so that both the rice husk wind sorter and the finishing wind sorter are It was a wind selection process.

[Problem that the invention seeks to solve]

However, this conventional wind sorting device performs air sorting in both the rice husk wind sorting section and the finishing wind sorting section using the suction air to a single suction dust exhaust fan. Since the wind pressure is much weaker than the wind pressure of the discharge air from the suction and dust removal fan, the wind selection effect in the rice husk wind selection section is low, and the finishing wind selection section is located further upstream from the rice husk wind selection section. Therefore, in other words, since the finishing wind selection section is located far from the suction port of the suction dust exhaust fan, the wind selection effect in this finishing wind selection section is further reduced, and the separation between the rice husk wind selection section and the finishing In order to improve the wind sorting effect in both the wind sorting section and the wind sorting section, it is necessary to use a large suction dust removal fan with a significantly large suction air volume. This has the disadvantage that the entire device becomes large.

The present invention eliminates this drawback.

[Means for Solving the Problems] Therefore, the present invention uses a suction dust exhaust fan for both the rice husk wind sorting section and the finishing wind sorting section, and also uses a rice husk wind sorting fan. It is proposed to install a cross-flow fan between the finishing section and the finishing wind selection section.

That is, the present invention provides a paddy culling device, a rice husk wind sorting section for the mixed rice after culling in the culling device, and a brown rice sorting section for sorting brown rice from the mixed rice after the wind sorting in the rice husk wind sorting section. In a rice hulling machine comprising a rice husk wind sorting device and a finishing wind sorting section for brown rice from the brown rice sorting device, an air passage is provided between one side of the rice husk wind sorting section and one side of the finishing wind sorting section. The rice husk wind sorting section and the finishing wind sorting section are connected to each other, and the suction port of the suction dust exhaust fan is shown on the other side of the rice husk wind sorting section, and the atmospheric air intake port is on the other side of the finishing wind sorting section. A cross-flow fan is disposed in the air passage communicating with the rice husks so that its suction side faces the finishing wind selection part and its discharge side faces the rice husk wind selection part.

[Action/effect of the invention]

According to this configuration, air sucked by the cross-flow fan from the atmospheric air intake on the other side blows through the finishing wind selection section, and the air sucked into the cross-flow fan is used for wind selection in the finishing wind selection section. In this case, the cross-flow fan is located at a location adjacent to the finishing wind selection section. In other words, the cross-flow fan for generating suction air in the finishing wind selection section is located at a location close to the finishing wind selection section. Therefore, the suction air in the finishing wind sorting section is much stronger than in the case of a single suction dust exhaust fan located far away from the finishing wind sorting section with the rice husk wind sorting section in between, as in the prior art. It will become.

On the other hand, the discharge air from the cross-flow fan is blown into the rice husk wind sorter with strong wind pressure, and the wind blown from the cross-flow fan into the rice husk wind sorter is immediately sucked into the rice husk wind sorter. Since the dust is sucked into the rice husk wind sorter, the wind speed in the rice husk wind sorter increases incomparably compared to the conventional case where only one suction dust exhaust fan is used. The effect can be significantly improved.

Therefore, according to the present invention, the wind selection effect of both the finishing wind selection section and the rice husk wind selection section can be improved by using the suction dust removal fan and the cross-flow fan in combination, and the suction air volume of the suction dust removal fan can be significantly increased. On the other hand, since the cross-flow fan used together with the suction dust-exhaust fan is smaller than the suction dust-exhaust fan of the same capacity, the entire air sorting device including these suction dust-exhaust fans and the cross-flow fan is not necessary. It has the effect of being downsized.

Furthermore, in the present invention, by providing the cross-flow fan in the air passage that communicates the finishing wind selection section and the rice husk wind selection section, the fan case of the cross-flow fan also serves as a constituent member of the air passage. This also has the effect of simplifying the configuration of the air passage with the cross-flow fan.

〔Example〕

The present invention will be described below with reference to drawings of embodiments. FIG. 1 shows a longitudinal sectional front view of the entire rice hulling machine, and this hulling machine includes a horizontally long box-shaped wind sorting device 1, and the wind sorting device. The entire apparatus is composed of a culling device 2 placed on the upper left side of the air sorting device 1, and a rotary brown rice sorting device 3 placed on the upper right side of the wind sorting device 1.

The deweighing device 2 includes a case 4 with a paddy supply hopper 5;
It is composed of a pair of culm removal rolls 6.6 provided in the case 4, and a manually opened/closed shutter 7 provided between the culm removal rolls 6.6 and the paddy supply hopper 5.

Further, the rotary brown rice sorting device 3 has a Kerrang 8
A first sorting cylinder 9 and a second sorting cylinder 19 are installed horizontally in two stages, upper and lower.
Both sorting cylinders 9 and 10 have a large number of concave portions 11 and 12 on their inner surfaces that are large enough to fit brown rice, and are driven to rotate in the direction shown by the arrow in FIG. Inside the cylinder 9.10, brown rice receiving troughs 13, 14 with spiral conveyors extending in the axial direction of the sorting cylinder and mixed rice receiving troughs 15, 16 with spiral conveyors also extending in the axial direction of the sorting cylinder are provided. There is.

The wind sorting device 1 has a long box-shaped casing 17 on its side.
Inside the casing 17, a rice husk winding section 18 for mixed rice after being culled by the culling device 2 is located at a position substantially directly below the culling device 2, and is located on the right side plate of the casing 17. A finishing air sorting section 20 for the brown rice from the rotary brown rice sorting device 3 is provided at a position close to the rice husk sorting device 19, and the rice husk sorting section 18 and the finishing air sorting section 20 communicate with each other via an air passage 21. .

Inside the left end of the casing 17 is a suction dust exhaust fan 22.
is provided so that the suction port of the suction/dust exhaust fan A22 faces into the rice husk wind selection section 18, while an atmospheric air intake port 23 to the finishing wind selection section 20 is provided in the right side plate 19 of the casing 17. do.

In the air passage 21 that communicates the rice husk wind selection section 18 and the finishing wind selection section 20, a cross-flow fan 24 is installed such that its suction side faces the finishing wind selection section 20 and its discharge side faces the rice husk wind selection section 18. establish.

Further, in the lower part of the rice husk wind sorting section 18, a mixed rice trough 25 with a spiral conveyor 26 into which the mixed rice after wind sorting the rice hus is placed, and a rice trough 27 with a spiral conveyor 28 are installed in the finishing wind sorting section 20. At the bottom, there is a brown rice gutter 2 with a rotary conveyor 30.
9, and a small rice gutter 31 with a spiral conveyor 32 is provided on the inner bottom surface of the air passage 21 in the middle of the suction air passage 21' to the cross-flow fan 24.

When the paddy is fed into the paddy supply hopper 5 in the culling device 2 during the culling and sorting work of paddy, the paddy is culled in the culling device 2 and flows down in the rice husk wind sorting section 18 directly below. The rice husks are sorted so as to be sucked into the suction dust exhaustion fan 22 by the discharge air from the cross-flow fan 24 and the suction air to the suction dust exhaustion fan 22, and the mixed rice after the rice husk sorting is transferred to the mixed rice gutter. 25, is transferred to the upper part by a packet type conveyor 33 installed upright from one end of this mixed rice gutter 25, and then flows down in a supply chute 34 installed vertically on the side of this packet type conveyor 33. , the distribution valve 35 in the supply chute 34 and the distribution shoe 1-3
At 6.37, the mixed rice is equally distributed and supplied to one end of the mixed rice receiving troughs is and te in both the sorting cylinders 9 and 10 in the rotary brown rice sorting device 3.

In this way, the mixed rice receiving trough 15 in both the sorting cylinders 9 and 10,
The mixed rice equally distributed and supplied to one end of 16 enters the supply sides 9' and 10' in both sorting cylinders 9 and 10 from the other ends of mixed rice receiving troughs 15 and 16, and is transferred by rotation of the sorting cylinders. The rice is scraped up to a height of The brown rice is lifted up to a relatively high position while stuck in the recesses 11 and 12, and then falls down.
, 14 are sorted to contain only brown rice,
The discharge sides 9' and 10'' of both sorting cylinders 9 and 10 contain almost only paddy, which is discharged through the chute 38 to the paddy supply hopper 5 in the culling device 2, where the culling action is performed again.

Both sorting cylinders 9. The brown rice that has entered the brown rice receiving troughs 13 and 14 in the IO reaches the finishing air sorting section 20 via the shoe 39, 40 at one end of the brown rice receiving troughs 13 and 14 and the supply gutter 41, where it is passed through the finishing air selection section 20. After the grains are removed by the air sucked into the brown rice trough 24, they flow down the brown rice trough 29 and are taken out of the machine by a packet type conveyor 42 from the brown rice trough 29.

In the wind sorting device 1, the reference numeral 43 in the figure branches from the discharge air passage 21'' from the cross-flow fan 24 in the air passage 21, and directs a part of the discharge air from the cross-flow fan 24 to the finishing air selection section 20. 44 is a swinging type sorting plate for sorting rice husks, 45 is a bypass air passage for sorting shiitake rice, and the above-mentioned atmospheric air intake port 2
3, a wire mesh 46 is installed so that the inside of the brown rice gutter 29 can be seen from the intake port 23. Also, 47 is
This is a motor for rotationally driving the culling device 2 and the rotary brown rice sorting device 3, as well as both fans 22 and 24 in the wind sorting device 1 and various spiral conveyors.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a longitudinal sectional front view of the entire hulling machine, FIG. 2 is a cross-sectional view taken along nn in FIG. 1, and FIG. FIG. 1... Wind sorting device, 2... a culm device, 3...
・Rotary brown rice sorting device, 18...Rice husk wind sorting section, 20
... Finishing wind selection section, 21 ... Air path, 22 ...
・Suction dust exhaust fan, 24...Cross flow fan.

Claims (1)

[Claims] (1) A paddy removing device, a rice husk wind sorting section for the mixed rice that has been removed by the rice husk winding device, and a brown rice sorting device that sorts brown rice from the mixed rice that has been air-sorted in the rice husk wind sorting section. and a finishing wind sorting section for brown rice from the brown rice sorting device, wherein one side of the rice husk wind sorting section and one side of the finishing wind sorting section are communicated via an air path. The suction port of the suction dust exhaust fan is shown on the other side of the rice husk wind sorting section, and the atmospheric air intake port is shown on the other side of the finishing wind sorting section, while the rice husk wind sorting section and the finishing wind sorting section are A wind sorting device for a rice huller, characterized in that a cross-flow fan is arranged in an air passage communicating between .