JPS58186476A - Apparatus for automatically adjusting intermediate and lower nets in dehulling machine - 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] A drive device having an automatic control unit is connected to the middle/lower screen, and the middle/lower screen is swingably adjusted to automatically adjust the middle/lower screen to the optimum inclination angle. This invention relates to a network automatic adjustment device.

Normally, in the Mangoku-type rice huller, the adjustment of the slope of the middle and lower screen depends on two contradictory factors: the amount of grains contained in the finished rice and the average amount of finished rice produced per hour. Determined accordingly. In other words, in order to reduce the roughness of finished rice,
If you make the slope of the lower screen steeper or narrow the area of the net, you can increase the grain size.On the other hand, to increase the amount of finished rice produced per unit time, you can make the slope of the middle and lower screens gentler or increase the area of the net. In addition, adjusting the slope is complicated and closely related to many uncertain factors such as the properties of the rolled rice, the deweighing rate, the moisture content, the presence or absence of sanding, and the size of the mesh. It is extremely difficult to make visual judgments and adjust gradients accurately and quickly.
It required a high degree of skill. However, it is time-consuming and troublesome for the operator to constantly monitor the middle and lower nets and adjust the inclination angle manually depending on the situation.

In view of the above-mentioned circumstances, the present invention aims to maintain the sorting performance and throughput at a high level of efficiency.In order to obtain the optimum gradient in the middle and lower screen, the above-mentioned reduction in scraps and finished rice production are reduced. A linear analysis is performed on the relationship with the inclination angle of the middle and lower nets, and the optimum inclination angle of the middle and lower nets is calculated by setting a certain range, and based on the range setting, the middle and lower nets are The purpose here is to provide a device that automatically adjusts the

Therefore, in order to realize the above-mentioned device, since the falling speed of the rolled rice flowing down the Mf on the screen and the inclination angle of the middle and lower screens are correlated with a certain ratio, the flowing speed should be adjusted. It is necessary to understand and keep it within a certain range (it is possible to control it).

The present invention will be explained below based on the preferred embodiment shown in the drawings. Fig. 1 is a schematic side view of a rice husking machine, Fig. 2 is a perspective view of the main part, and Fig. 8 is a block diagram of an electric circuit.

In the figure, 1 is a machine frame, and 2 is a mangoku funnel, which feeds milled rice consisting of unhulled rice and brown rice to the mangoku upper net 3. The Mangoku upper net 3 is erected at an angle, and below the net 3, a middle/lower net 4 consisting of wooden frames 21 and 22, a middle net portion 23, a lower net portion 24, etc. is also erected at an angle. At the same time, the net 4 has an automatic control section 6 composed of a detection circuit 25, an amplification circuit 26, and a control circuit 2''1, and is supported by a drive device 5 consisting of a motor etc., with a fulcrum shaft 14 as a pivot. That is, the drive device 5 has a drive fitting 10 fixed to the driving shaft 9, and one end of the drive connecting rod 11 is suspended from the free end of the drive fitting 10.
The other end is suspended by a connecting fulcrum metal fitting I2 that is rotatably provided on the body frame 1 about a connecting fulcrum shaft 15. The shaft end of an upper net adjustment shaft 13 is fixed to one end of the connection fulcrum fitting 12, and the upper net adjustment shaft 18 is fitted into an adjustment shaft fitting 29 provided at the lower end of the wooden frame 22 of the middle and lower net 4. Supports the lower side of the middle/lower screen 4.

Next, a support 8 is arranged at a fixed distance above the middle net portion 23 of the middle/lower screen 4, and a grain flow rate sensor 7 having a rotary blade 7a is provided on the support 8. Lower, the output end of the flow rate sensor 7 is connected to the automatic control unit 6 through the connection cord 20 etc., and the automatic control unit 6 is connected to the l! Connected to the drive device. Further, a switching device 28 is connected to the automatic control section 6, and the inclination angle of the middle and lower screens can be arbitrarily selected by manual electric drive or automatic electric drive to make them movable.

In addition, 16 in the figure is a ring conveyor for transferring to the de#ing device, 1
7 is the Mangoku Kangen conveyor for transferring to the Mangoku funnel, 18 is the finished rice conveyor, and at the transfer end of each conveyor,
It is equipped with a lifting device. Next, number 19 is a karakinou.

Since the present invention is constructed as described above, each part is activated by a predetermined operation, the unhulled rice is fed into the dehulling device, and after wind sorting, the ground rice is transferred to the Mangoku funnel 2 and placed on the Mangoku net 8. Let it flow down to.

Therefore, the unhulled rice, etc., which has a large medium grain size, flows down on the Mangoku net 3, flows down onto the Mangoku E net 8, passes through the ring conveyor I6, and is sent to the deweighing device. For brown rice, etc., use medium/lower rice 4
leak to. The milled rice consisting of brown rice, etc. that leaked to the middle screen part 28 of the middle/lower screen 4 in the center is again sorted into unhulled rice and brown rice, and the unhulled rice is
Flowing down the middle screen section 28h toward the Mangoku Kangen conveyor 17,
The brown rice leaks into the lower screen section 24, where it is again sorted, and the unhulled rice flows down the second upper section of the lower screen section and is transferred to the Mangoku Kangen conveyor 17, where it is processed into brown rice. The grains leak and are collected by the finishing rice conveyor 18 and taken out to the outside of the machine frame 1. Here, when the switching device 28 is set to automatic, the ground rice flowing down the soil in the middle mesh section 28 collides with the rotating blade 7a of the grain flow rate sensor 7 and flows down or leaks, and at the same time the speed of the ground rice is The rotational force will be superacid according to. However, the velocity of the grains flowing down on the middle screen portion 23 has a certain ratio with the inclination angle of the middle and lower screen 4, and also depends on the size of the mesh, the properties of the ground rice, the deweighing rate, and the grain size. It is also greatly involved in things like rubbing.

Therefore, if this flowing down state is easily grasped, and the flowing down state is corrected to a satisfactory state and maintained, all of the above-mentioned factors will be satisfied, and highly efficient deweighing and sorting work can be continued. I can do it.

Therefore, it is necessary to set in advance the optimum flow rate within a certain range, which is most advantageous for reducing grain roughness and increasing North American production, and to always maintain the rotation speed of the grain flow rate sensor 7 within a certain range (if possible, The d-picenosaur sequentially converts the rotational speed into an electrical signal and outputs it to the automatic control section 6.

However, if the rotational speed of the grain flow rate sensor 7 is within a certain range (1), the automatic control section 6 that receives the magnetic signal from the sensor 7 starts the drive device 5 to reduce the slope of the middle and lower screens 4. However, if the rotational speed falls within a certain range, the drive device 5 stops. Further, if the rotational speed of the flow rate sensor 7 is below a certain range, the automatic control unit 6 that receives the electric signal from the sensor 7 starts the drive device 5 to make the slope of the middle and lower screens 4 steeper. When the rotational speed falls within a certain range, the drive device 5 stops.

Where is the grain flow rate sensor mentioned above? The more superacidified electrical signal passes through a detection circuit 25, an amplification circuit 26, and a control circuit 27 to activate the drive device 5. That is, the drive device 5 consisting of the above-mentioned motor etc. rotates the driving shaft 9 in response to a start command from the control circuit 27, and drives the drive connecting rod 1 via the drive fitting 10.
1 is moved down by 1, and the connecting fulcrum metal fitting 12 is further rotated around the connecting fulcrum shaft 15, and the upper net adjustment shaft is interlocked with the rotation, and as a result, the middle and lower nets 4 are moved around the fulcrum shaft 14. It vibrates and is wetted by using it as a fulcrum.

Note that if the switching device 28 is set to manual, the grain
The function of the speed sensor 7 is released, and the slope can be adjusted freely by electric single movement by manual operation.

As described above, according to the present invention, the grain flow rate sensor 7 is mounted on the net surface of the middle screen portion 28 of the middle/lower screen 4 which is movable by the drive device 5 having the automatic control section 6. Since the output end is connected to the automatic control unit 6, the slope of the middle and lower screens 4 can be adjusted automatically and accurately and quickly in accordance with the flow of rice without constant monitoring by the operator. The sorting performance and rice polishing processing capacity are maintained at a high level of efficiency, providing convenience that has not been seen before. Furthermore, although the sensor 7 according to the present invention is mounted on the support 8, an adjusting device may be attached to the sensor 7 so that the position of both numbers can be changed as appropriate. It is not limited to this embodiment as long as it is possible to attach a plurality of F processors 7 and to capture the grain flow 41M. Further, it goes without saying that the driving device d5 may be any mechanism as long as the middle/lower screen 4 can be moved, swung or vibrated to freely adjust the slope.

[Brief explanation of drawings]

2 is a schematic side view of the rice huller α, FIG. 2 is a perspective view of the main part, and shows an embodiment of the present invention, and FIGS. 1 and 8 are block diagrams. In the figure, 1... Aircraft frame, 2... Mangoku funnel, 3... Mangoku 1 net, 4... Middle/lower net, 5... Drive device, 6...
・Automatic control unit, 7. Grain flow rate secer, 7a.. Rotating vane, 8.. Support body, 9.. Driving shaft, 10.. Drive fitting, 11.. Drive connecting rod, 12..・Connection fulcrum metal fitting, 13...1 net adjustment shaft, 14・Fully point shaft, 15...Connection fulcrum shaft, 16 ・Reduction Conobear, 17...Mangoku Kangen conveyor, 18...it h *Konobear, 19...
Karakinou, 20... Connection cord, 21/22... Wooden frame,
23...Middle mesh part, 24...Lower mesh part, 25...Detection circuit, 26...Amplification circuit, 27...Control circuit, 28
...Switching device, 29...Adjustment shaft fitting, Patent applicant Oshima Agricultural Machinery Co., Ltd. 6 No. J Kasumi

Claims (1)

[Claims] A grain flow rate sensor is provided so as to face the net surface of the middle and lower nets movably installed within the machine frame by a drive device having an automatic control section, and the output end of the processor is connected to the automatic control section 1. This is an automatic adjustment device for middle and lower nets in Momi-surisaka, which is characterized by being connected.