JPS6142379A - 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 dehulling in a huller and finishing wind sorting on brown rice sorted from the mixed rice. It is something.

[Conventional technology]

A paddy de-sexing device, a rice husk wind sorting section for the mixed rice after de-sexed by the rice husk wind sorting section, a brown rice sorting device for sorting brown rice from the mixed rice after wind selection 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, in this conventional wind sorting device, both the rice husk wind sorting section and the finishing wind sorting section are separated by suction air to one suction dust exhaust fan. Since the wind pressure of the suction air to the suction dust exhaust fan is much weaker than the wind pressure of the discharge air from the suction dust exhaust fan, the wind selection effect in the rice husk wind selection section is low (,
Moreover, since the finishing wind sorting section is located further upstream than the rice husk wind sorting section, in other words, the finishing wind sorting section is located further away from the suction port of the suction dust exhaust fan. The wind selection effect will further deteriorate, and in order to improve the wind selection effect in both the rice husk wind selection section and the finishing wind selection section, a large suction dust fan with a significantly higher suction air volume must be used. However, there is a drawback that the entire air sorting device including the suction dust exhaust fan and both air sorting sections becomes large in size.

In addition, this conventional air sorting device has the inconvenience of not being able to constantly monitor the sorting status of brown rice in the finishing sorting section and whether or not clogging of brown rice occurs in the brown rice gutter of the finishing sorting section during operation.

The present invention eliminates this drawback.

[Means for solving problems]

For this reason, the present invention provides a paddy de-sexing device, a rice husk wind sorting section for the mixed rice after de-sexed in the rice husk wind sorting section, and a brown rice sorting section for separating brown rice from the mixed rice after the wind selection in the rice husk wind sorting section. In a rice hulling machine comprising a sorting device and a finishing wind sorting section for brown rice from the brown rice sorting device, one side of the rice husk wind sorting section and 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. A cross-flow fan is disposed in the air passage communicating between the two so that its suction side faces the finishing wind selection section and its discharge side faces the rice husk wind selection section, and an atmospheric air intake port to the finishing wind selection section. is configured so that the brown rice gutter in the finishing wind selection section can be seen from the atmospheric air intake.

[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 when using a single suction dust exhaust fan located far away from the finishing wind sorting section across the rice husk wind sorting section as in the conventional technology. 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.

In addition, since the inside of the brown rice gutter in the finishing sorting section can be seen from the atmospheric air intake to the finishing sorting section, it is possible to check the sorting state of brown rice in the finishing sorting section and the transfer state of brown rice in the brown rice gutter. − It is possible to constantly monitor the system while it is in transit.

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. In addition, 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 this cross-flow fan can be replaced by the constituent members of the air passage. Since it can be used for both purposes, it has the effect of simplifying the configuration of the air passage with the cross-flow fan. 'Furthermore, according to the present invention, the sorting state of brown rice in the finish sorting section and the transfer state of brown rice in the brown rice gutter can be constantly monitored during operation, so the air volume can be adjusted according to the sorting state of brown rice. It also has the effect of quickly and accurately dealing with clogging of brown rice in a brown rice gutter.

〔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 whole apparatus is composed of a de-aging device W2 placed on the upper left surface of the 1, and a rotary brown rice sorting device 3 placed on the upper right surface of the wind sorting W1.

The de-sexing device 2 includes a case 4 with a paddy supply hopper 5;
It consists of a pair of stripping rolls 6.6 provided in the case 4, and a manually opened/closed shutter 7 provided between the stripping rolls 6.6 and the paddy supply hopper 5.

Further, the rotary brown rice sorting device 3 has a casing 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 recesses 11 and 12 formed on their inner surfaces, each having a size large enough to fit brown rice, and are driven to rotate in the direction shown by the arrow (A) in FIG. Inside both sorting cylinders 9.10 are brown rice receiving troughs 13.14 with spiral conveyors extending in the axial direction of the sorting cylinders, and mixed rice receiving troughs 15.1 with spiral conveyors also extending in the axial direction of the sorting cylinders.
6 are provided respectively.

The wind sorting device 1 has a long box-shaped casing 17 on its side.
Inside the casing 17, there is a rice husk winding section 18 for the mixed rice that has been de-sexed by the de-sexing device 2 at a position substantially directly below the de-sexing 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.
The suction port of the suction dust exhaust fan 22 is connected to the rice husk wind sorting section 1.
On the other hand, the right side plate 19 of the casing 17 is provided with an intake port 23 for atmospheric air to the finishing screen section 20.

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

The atmospheric air intake port 23 in the right side plate 19 of the casing 17 is configured so that the inside of the brown rice gutter 29 in the finishing screen section 20 can be seen from the atmospheric air intake port 23. In addition, this atmospheric air intake 23 has a brown rice gutter 29.
A wire mesh 46 having a mesh size that does not obstruct the inside view is stretched.

During the de-sexing and sorting work of paddy, when the paddy is fed into the paddy supply hopper 5 in the de-sexing device 2, the paddy is de-sexed in the de-sexing device 2, and when flowing down in the rice husk wind sorting section 18 directly below, the paddy is 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 24-9= and the suction air to the suction dust exhaustion fan 22, and the mixed rice after rice husk sorting is mixed rice. The mixed rice enters the gutter 25 and is transferred to the upper part by a bucket type conveyor 33 set up from one end of this mixed rice gutter 25, and then flows down in a supply chute 34 provided vertically on the side of this packet type conveyor 33. At this time, the distribution valve 35 and distribution shoe 36, 37 in the supply chute 34 are connected to the mixed rice receiving troughs 15, 1 in both sorting cylinders 9, 10 in the rotary brown rice sorting device 3.
6 is equally distributed to one end.

In this way, the mixed rice receiving trough 15. in both sorting cylinders 9.10.
The mixed rice equally distributed and supplied to one end of 16 is transferred to the mixed rice receiving trough 15. , 16 enters the supply sides 9', 10' in both sorting cylinders 9 and 10, and is scraped up to a height formed by the rotation of the sorting cylinders, and then falls to the bottom repeatedly, resulting in a thickness of while forming a fluidized bed on the discharge side 9", 10"
During the transfer, the brown rice in the mixed rice is lifted up to a relatively high position while being stuck in the recesses 11 and 12, and then falls down.
3.14 is sorted so that only brown rice enters, while the discharge sides 9' and 10'' of both sorting cylinders 9.1o contain almost only paddy, and the paddy is passed through the chute 38 to the de-sexing device 2. It is discharged into the supply hopper 5, where the desexing action is performed again.

The brown rice that has entered the brown rice receiving channels 13 and 14 in both the sorting cylinders 9 and 10 reaches the finishing wind sorting section 2o via the shoes 39 and 40 at one end of these brown rice receiving channels 13 and 14 and the supply channel 41. Here, by the suction air to the cross-flow fan 24, the rice is removed so as to enter the rice gutter 31, and then flows down to the brown rice gutter 29, and from the brown rice gutter 29 is transferred to the packet type conveyor 4.
The sorting state in the finishing air sorting section 20 and the transfer state of the brown rice in the brown rice gutter 29 are always controlled through the atmospheric air intake port 23 to the finishing air sorting section 2o. be able to.

In the wind sorting device 1, the reference numeral 43 in the figure is a branch of the air passage 21 from the discharge air passage 21# of the cross-flow fan 24, and a part of the air discharged from the cross-flow fan 24 is transferred to the finishing air selection section 20. 44 is an oscillating sorting plate for sorting rice husks, 45 is a bypass air passage for sorting rice, and 48 is a valve for adjusting the air volume of the cross-flow fan 24. 47 is the desexing device 2.
It is a motor for rotationally driving the rotary brown rice sorting device 3 and also rotationally driving both fans 22 and 24 in the wind sorting device 1 and various spiral conveyors.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a vertical front view of the entire hulling machine, Fig. 2 is a sectional view taken along ■-■ in Fig. 1, and Fig. 3 is a sectional view taken along III-III in Fig. 2. Cross section. 1...Wind sorting device, 2...Desexing device, 3...
・Rotary sorting device, 18...Rice husk wind sorting section, 20...
...Finishing air selection section, 21... Air path, 22... Suction dust removal fan, 24... Cross-flow fan, 23...
・Atmospheric air intake, 29...brown rice gutter.

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 the brown rice from the brown rice sorting device, in which one side of the rice husk wind sorting section and the finishing wind sorting section are communicated via an air passage, and the rice husk winding The suction port of the suction dust exhaust fan is shown on the other side of the sorting section, and the atmospheric air intake port is shown on the other side of the finishing wind sorting section. A cross-flow fan is disposed in the communicating air passage so that its suction side faces the finishing wind selection section and its discharge side faces the rice husk wind selection section, and an atmospheric air intake port to the finishing wind selection section, A wind sorting device for a rice huller, characterized in that the brown rice gutter in the finishing wind sorting section is visible from the atmospheric air intake.