JPS6331267B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION According to the present invention, a mangeki net installed within the frame of the aircraft is connected to a drive device having an automatic control unit so as to be swingable, and the optimal inclination angle of the mangoku net is automatically adjusted. This article relates to an automatic adjustment device for the mangoku upper net of a rice huller.

Usually, in the case of a rice huller equipped with a million stone net,
The angle of inclination of the mangeki net has a close relationship with the sorting performance. In particular, the inclination angle of the mangeki upper net is determined visually by the operator depending on the grain flow pattern, and is adjusted to achieve optimal performance. The slope was adjusted accordingly. This gradient adjustment depends on the ability of each operator, and the criteria for promoting operation are extremely difficult, making it extremely difficult to accurately maintain screening performance in a highly efficient state. However, the automatic adjustment device for the mangeki upper net in the conventional rice hulling machine adjusts the inclination angle of the mangok net depending on the increase or decrease in the amount of polished rice retained in the mangok funnel. Alternatively, the inclination angle of the Mangoku upper net is manually set in advance, and the flow rate from the Mangoku funnel is automatically adjusted. Furthermore, these Mangoku-type rice hullers are slightly improved, and there are some features that automatically adjust the inclination angle of the Mangoku net on a temporary and one-step basis. It cannot be avoided that this greatly depends on the ability of the individual operator, and the initial purpose of the automatic adjustment device for mangeki nets was to improve the sorting performance by accurately and easily adjusting the slope of the mangeki nets. However, the issue was still unreachable and was left unresolved.

Therefore, the present invention has been made in view of the above-mentioned circumstances, and it is an object of the present invention to provide an automatic adjustment device for the top net of a rice huller, which automatically adjusts the optimal inclination angle of the top screen of the rice hull.

By the way, as mentioned above, the operator makes a visual judgment on the Mangoku upper net during the sorting operation based on the flow pattern of the grains and adjusts the slope of the Mangoku upper screen. The visual judgment criterion is the grain flow area up to approximately 7 minutes from the top of the Mangoku upper net that occurs as grains flow down the Mangoku upper net, and the grain stagnation area approximately 3 minutes below the remaining grain stagnation area. It lies in the origin of the flow pattern of the area. In other words, the flow velocity of grains is high in the upper flow area of the Mangokujo net, and the flow velocity of grain is slow in the lower flow area, and for this reason, in the upper flow area of the Mangokujo net, the grains flow down while stagnation. A situation occurs. When the stagnation area in the downstream area is about 3 minutes long, the slope of the Mangokujo net is judged to be optimal. However, in the present invention, the above-mentioned judgment criteria of the operator are taken into account, and the flow pattern on the mangeki net is physically captured to automatically adjust the mangokami net to the optimum slope.

The present invention will be explained below based on the preferred embodiment shown in the drawings. Fig. 1 is a side view of a tengoku device embodying the invention, Fig. 2 is a perspective view, and Fig. 3 is an electric circuit block diagram.

In the figure, 1 is the body frame of the rice huller, and 2 is the Mangoku funnel, which supplies the milled rice consisting of unhulled rice and brown rice to the Mangoku upper net 3. The Mangokujo net 3 is made up of wooden frames 24, 24', a net part 32, etc., and is installed at an angle inside the body frame 1, and also has a drive device 14 made of a motor etc.
Equipped with a to make it swingable. In other words, the drive device 14 has a drive fitting 26 fixed to the driving shaft 25, one end of the drive connection rod 15 is suspended from the free end of the drive fitting 26, and the other end supports the connection fulcrum 20 on the fuselage frame 1. It is suspended by a connecting fulcrum metal fitting 18 which is rotatably installed as a shaft. An upper net adjustment lower shaft 17 is attached to one end of the connecting fulcrum metal fitting 18, and a wooden frame 24, 2 of the above-mentioned tengoku upper net 3
It is fitted into the lower bearing fittings 28, 28' provided at 4', and supports the lower side of the upper net 3. Further, the other end of the connecting fulcrum metal fitting 18 is suspended by one end of the upper shaft operating rod 19, and the other end is fixed to one end of the upper net adjustment upper shaft 16 which is suspended horizontally in the machine frame 1 above the tengoku upper net 3. The upper bearing fitting 21 is suspended from the free end thereof. Further, upper net support fittings 22, 22' are fixed to the upper net adjustment upper shaft 16, and the support fittings 22, 22' are attached to upper net support rings 23, 2 provided on the wooden frames 24, 24'.
3' to support the upper side of the net 3. Next, a support part 10 is placed above the ten thousand stone upper net 3 and is spaced apart from the upper net 3 by a certain distance and interlocks substantially integrally with the ten thousand stone upper net 3.
, and grain flow rate sensors 11 and 11' having rotating blades are provided on the support section 10 and suspended. In other words, approximately 7 minutes from the top of the upper mesh 3 is the border,
Grain flow rate sensor 1 on the upstream and downstream side of the boundary
1 and 11' respectively. The grain flow rate sensors 11, 11' are designed to rotate in accordance with the flow of grains, and convert the rotational speed into an electrical signal and output it. At the top of the fuselage, there are a rotation speed detection circuit 29, an amplification circuit 30,
An automatic control section 9 comprising a control circuit 31 is provided, and the automatic control section 9 is connected to the grain flow rate sensor 1.
1 and 11' via a connection cord 27 to control the drive device 14. Further, a switching device 33 is connected to the automatic control unit 9, and the inclination angle of the mangeki upper net 3 can be swung by selecting either manual electric or automatic electric.

In addition, in the figure, 4 is the lower net, 5 is the main conveyor for rolling rice,
Reference numeral 6 is a mangeki funnel ring former coveyer, and 7 is a finished rice conveyor, each of which is equipped with a lifting device at the end of conveyor transport. Next, number 8 is the karakinoh.

Since the present invention is configured as described above, the power is turned on, each part is activated by predetermined operations, the unhulled rice is put into the removal device, and after wind sorting, the milled rice is transferred to the Mangoku funnel 2. Let it flow down onto the upper screen 3. Thereupon, the unhulled rice, etc., which has a medium grain size and is flowing down the Mangoku upper net 3, flows down the Mangoku upper net 3 and is transferred to the removing device through the unrolled rice conveyor 5, and is reduced to a medium grain size. Small brown rice leaks through the upper screen 3 and middle and lower screen 4, is taken out of the machine by the finishing rice conveyor 7, and brown rice and middle and lower screen 4 leak from the downstream part of the upper screen 3 (approximately 3 minutes from the bottom).
Since the brown rice that has not leaked contains unhulled rice, it is returned to the Mangoku Funnel 2 by the Mangoku Funnel reduction conveyor 6. Therefore, when the rolled rice flows down the upper screen 3, the proportion of unhulled rice increases in the downstream region due to leakage of brown rice, and the flow speed suddenly decreases, causing a situation in which the rolled rice stagnates and flows down.

Here, as mentioned above, the optimal slope of the upper mesh 3 is
The upper 7th minute of the longitudinal direction has a flow pattern, and the lower third has a stagnation flow pattern.
The grain flow rate sensor 11 facing the grain stagnation flow area 12 of about 30 minutes detects the flow pattern of the rolled rice, and the grain flow rate sensor 1 facing the grain stagnation flow area 13 of about 3 minutes below
When 1' detects the stagnation and flow pattern of the rolled rice, it is the upper screen 3.
This shows that the slope is optimal.

When both the upper and lower grain flow rate sensors 11, 11' detect the stagnation flow pattern of the ground rice, since the slope of the upper screen 3 is gentle, the public distribution of the upper screen 3 is driven in the direction of increasing, and both sensors 11, 11' When both detect the flow pattern of the rolled rice, since the distribution of the upper screen 3 is steep, the slope of the upper screen 3 is driven in the direction of decreasing.

That is, the electric signals generated by the grain flow rate sensors 11 and 11' control the drive device 14 through a rotation speed detection circuit 29, an amplification circuit 30, and a control circuit 31. The drive device 14 controlled by the automatic control section 9 operates the driving shaft 25 to move the drive connecting rod 15 up and down via the drive fitting 26, and further rotates the connecting fulcrum fitting 18 about the connecting fulcrum 20. The upper shaft operating rod 1 is moved by the rotation of the connecting fulcrum metal fitting 18.
9 are interlocked, the upper bearing fitting 21 slides, the upper net adjustment upper shaft 16 rotates, the upper net support fittings 22, 22' slide, and the upper side of the top net 3 is vertically swung.
At the same time, the upper net adjustment lower shaft 17 is connected to the connecting fulcrum fitting 1.
According to the rotation of 8, the lower side of the upper net 3 is vertically swung.

In the case of manual electric operation, depending on the setting of the switching device 33, the function of the grain flow rate sensors 11, 11' is canceled and the slope can be adjusted by manual electric operation.

As described above, according to the present invention, the inclination angle of the mangokami net 3 is accurately and quickly maintained in an optimal state without depending on the operator's individual ability, and the sorting performance can be efficiently maintained without the operator having to monitor the mangokami net. To drip,
Very convenient and effective.

Furthermore, the properties of grains vary depending on the type and moisture content of the grains, and the flow pattern of the grains spread out on the Mangoku upper net also changes, so the position of the grain flow rate sensor placed on the upper net can be changed as appropriate. It would be even better if an adjustment device was added. It should be noted that the drive mechanism of the present invention is merely one embodiment, and any mechanism may be used as long as it is possible to adjust the slope by swinging the top net. Further, in the grain flow rate sensor used in the present invention, the grain flow rate is captured by the rotational speed of the rotating blade and converted into an electrical signal, but the method of capturing the grain flow rate is not limited to the above-mentioned embodiment. shall be taken as a thing.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a schematic side view of an automatic stacking device for a rice huller, FIG. 2 is a perspective view of the main part, and FIG. 3 is a block diagram. In the diagram, 1... fuselage frame, 2... mangoku funnel, 3...
Mangoku upper screen, 4...Middle and lower screen, 5...Surubori rice ring conveyor, 6...Mangoku funnel ring source conveyor, 7...Finishing rice conveyor, 8...Kara-wine, 9...Automatic control section, 10
... Support part, 11, 11' ... Grain flow rate sensor,
12... Grain flow area, 13... Grain stagnation flow area, 1
4... Drive device, 15... Drive connection rod, 16...
Upper net adjustment upper axis, 17... Upper net adjustment lower axis, 18...
Connection fulcrum fitting, 19... Upper shaft operating rod, 20... Connection fulcrum, 21... Upper bearing fitting, 22, 22'...
Upper net support metal fitting, 23, 23'... Upper net support ring, 2
4, 24'...Wooden frame, 25...Driving shaft, 26...
Drive fitting, 27...Connection cord, 28, 28'...
...Lower bearing bracket, 29...Rotation speed detection circuit, 30...
...Amplification circuit, 31...Control circuit, 32...Amibe,
33...Switching device.

Claims (1)

[Claims] 1. A mangoku upper net installed within the body frame is connected to a drive device having an automatic control section so that the inclination angle can be changed, and a plurality of grains are attached to the support section on the upper surface side of the mangoku upper net. The grain flow rate sensor is arranged to face the lower grain flow area and the grain stagnation lower flow area on the top net, respectively, and the output end of the grain flow rate sensor is connected to the automatic control section. This is an automatic adjustment device for the upper mesh net in a rice huller.