JPH0217629Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention has a sorting tube that is continuously rotated in one direction and separates the mixed rice after hulling by derolling into brown rice and paddy, and the separated paddy is passed through the paddy return gutter to the This invention relates to a mixed rice sorting device for a huller with a structure that reduces the amount of rice to rolls.

Conventionally, in this type of equipment, when the removal rate is kept constant, as the amount of reduced rice increases, the amount of brown rice in the reduced rice also increases, and as a result, the double rolling of the removed rice results in rough rice or This method had the disadvantage of producing a large amount of defective rice such as broken rice. On the other hand, if the amount of reduced rice is less than the standard amount, the absolute amount of sorted rice in the sorting tube is insufficient, and the work efficiency is poor, and the sorted brown rice contains the standard amount. There were inconveniences such as mixing in more than the amount of paddy, which deteriorated the sorting accuracy.

However, the present invention has a sorting cylinder that rotates continuously in one direction to separate the mixed rice after hulling by derolling into brown rice and paddy, and the separated paddy is returned to the derolling through the paddy return gutter. In this structure, a reduced rice sensor is provided to detect the flow rate of reduced rice to be derolled through the paddy return gutter, and a grain flow valve opening/closing mechanism is provided to adjust the supply amount of grains to be supplied to the derolled rice. Connect the reduced rice sensor to
The grain flow valve is controlled to open and close depending on the increase/decrease in the flow rate of the reduced rice, and the terminal end of the sorting tube is formed flat, so that the starting end of the paddy reducing gutter that falls from the flat surface of the sorting tube is It is characterized in that the reduced rice sensor is attached.

Therefore, the sorting throughput (work load) in the sorting cylinder and the amount of reduced rice to be returned can be maintained at an appropriate constant standard state at all times, and it is possible to maintain a constant efficiency in sorting and to maintain stable sorting performance. At the same time, it is possible to prevent an increase in defective rice such as grained rice or broken rice due to double rubbing, and it is possible to carry out efficient and good sorting work, and in particular,
Since the sensor at the starting end of the paddy return gutter detects the grains falling from the flat surface of the sorting tube, it is possible to stably detect the flow rate by detecting the grains falling down from the flat part in a stable state.

An embodiment of the present invention will be described in detail below with reference to the drawings.

Fig. 1 is a front view of the whole, Fig. 2 is a side view of the same, and Fig. 3 is a cross-sectional view of the same. A pair of derollers 3 and 4 are provided inside the roll.

In the figure, 5 is the wind sorting section on which the hulling section 1 is placed, the first gutter 6 and the brown rice conveyor 7 for taking out the brown rice.
, a small rice storage section 8 provided adjacent to the first gutter 6, a second gutter 10 facing below the unrolled grains 3 and 4 via a grain board 9 for extracting mixed rice, and a mixed rice conveyor 11. and a third gutter 12 adjacent to the second gutter 10 for taking out the rice cake, and a rice cake conveyor 13;
A dust suction/discharge fan 14 forming a sorting air passage above the first to third gutter 6, 10, 12 and the rice collecting section 8, and a brown rice thrower 15 communicating with the brown rice conveyor 7 and mixed rice conveyor 11, respectively. and a mixed rice thrower 16.

In the figure, reference numeral 17 denotes a mixed rice sorting section installed in parallel with the hulling section 1, and as shown in FIGS. 4 and 5, the upper and lower sorting tubes rotate continuously in one direction to separate and take out brown rice and paddy. 18, 19, and support rolls 20 and 2 that rotatably support the sorting cylinders 18 and 19, respectively.
1..., a mixed rice hopper 22 that faces the delivery end of the mixed rice thrower 16, and a mixed rice supply gutter 23 that communicates the feed start end side with the hopper 22 and inserts the feed end end into the upper sorting cylinder 18. and a mixed rice supply conveyor 24, an upper brown rice receiving gutter 25 which is inserted into the upper sorting tube 18 to take out the brown rice inside the sorting tube 18, an upper brown rice take-out conveyor 26, and a sending end of the gutter 25 into the lower sorting tube 19. A feed gutter 27 that communicates with the rice, a paddy return gutter 28 that returns the paddy inside the upper sorting tube 18 to the hopper 2, and a lower brown rice receiving section that is inserted into the lower sorting tube 19 and takes out the brown rice inside the sorting tube 19. 29 and a lower brown rice take-out conveyor 30, a brown rice gutter 31 that communicates the delivery end of the gutter 29 with the first gutter 6, and a mixed rice gutter 32 that returns the paddy inside the lower sorting tube 19 to the second gutter 10. Equipped with.

In the figure, 33 is an electric motor that drives the hulling section 1, wind sorting section 5, and sorting section 17, and is connected to the output pulley 34 and counter pulley 35 of the motor 33 by a belt 36. The drive pulley 37, idle pulley 38, and counter pulley 36 are connected by a belt 39, and the brown rice conveyor 7, mixed rice conveyor 11, rice cake conveyor 13, and dust suction/discharge fan 14 are connected to the counter pulley 35 and each pulley. 40,41,4
2, 43 and a belt 44, and a sorting drive pulley 45 which also operates in conjunction with the idle pulley 38, and each pulley 46, 47, 48, 49, 5.
0 and each conveyor 24, 2 by the belt 51
6, 30 and the support rolls 20, 21 are connected.

Further, in the figure, 52 is a feed-out roll provided at the lower supply port of the hopper 2, and 53 is a grain flow valve for adjusting the supply amount of grains. A flow rate valve 53 is connected to the hopper 2, and the flow rate valve 53 is controlled to open and close as appropriate by forward and reverse driving of the motor 54.
Accordingly, the amount of grain supplied to the derollers 3 and 4 is adjusted.

Further, 57 is a reduced rice sensor installed in the paddy returning gutter 28 for detecting the flow rate of paddy, and the sensor 57 is connected to an inclined detection plate 58 with which grains flowing naturally in the gutter 28 collide. , and a converter 59 that converts the impact momentum, that is, the instantaneous weight flow rate into an electrical signal.

FIG. 6 shows a control circuit diagram of the flow rate valve 53, in which an amplifier 6 is connected to a control circuit 61 to which a flow rate standard setting device 60 for setting the standard flow rate of reduced rice is connected.
A control circuit 61 is connected to the motor 54 via flow valve opening and closing circuits 63 and 64 to control the flow rate detected by the sensor 57 and the setting device 60. When a difference in magnitude occurs between the flow rate valve 53 and the reference value, the motor 54 is rotated in the forward and reverse directions to control the opening and closing of the flow valve 53 to match the reference value.

The present embodiment is constructed as described above, and when paddy is put into the hopper 2, the paddy is removed by the derolls 3 and 4, and the brown rice and paddy that fall through the grain board 9 are removed. The rice falls into the second gutter 10, is taken out by the mixed rice conveyor 11, and is lifted up to the mixed rice hopper 22 by the mixed rice thrower 16.
At this time, the rice grains falling into the third gutter 12 are discharged out of the machine by the rice grain conveyor 13, and the rice husks together with dust are discharged from the machine by the dust suction/discharge fan 14. Mixed rice (brown rice and paddy) carried into the hopper 22
The mixed rice is transferred to the upper sorting tube 1 by the conveyor 24.
8, the upper sorting tube 18 is continuously rotated in one direction as shown in FIGS. 4 and 5.
The mixed rice is stirred so as to be in contact with the inner circumferential surface of the sorting tube 18, and the brown rice that fits into the recessed hole 18a on the inner circumferential surface of the sorting tube 18 is lifted upward and falls onto each upper surface of the upper brown rice receiving gutter 25. The brown rice inside is carried inwardly at one end of the lower sorting tube 19 by the upper brown rice take-out conveyor 26 via the feeding gutter 27, while the paddy that does not fit into the recessed hole 18a on the inner peripheral surface of the upper sorting tube 18 slides down. The paddy is then moved to the other end side of the sorting tube 18, and the paddy is returned to the hopper 2 as reduced rice through the paddy reducing trough 28 to be re-hulled. In addition, since some paddy is mixed in the brown rice carried into the lower sorting tube 19 via the feed gutter 27, the upper sorting tube 18
Similarly, brown rice and paddy are further separated by the lower sorting tube 19, and the brown rice falling into the lower brown rice receiving section 29 is transferred to the brown rice gutter 31 by the lower brown rice take-out conveyor 30.
The brown rice that falls from the brown rice gutter 31 to the first gutter 6 is carried out of the machine by the brown rice thrower 15, and the paddy inside the lower sorting tube 19 is mixed with some brown rice and is transferred to the other side of the sorting tube 19. Since it falls from the end to the second gutter 10 via the mixed rice gutter 32, the paddy containing brown rice is returned to the mixed rice hopper 22 and re-sorted.

During such work, the sensor 57 detects the flow rate of the paddy, that is, the reduced rice flowing down the paddy reduction gutter 28, and the flow rate of the reduced rice is now higher than the standard amount, and the amount of brown rice contained in the reduced rice also increases. However, when a large amount of defective rice such as grainy rice or broken rice is generated due to the double rolling of the de-rolls 3 and 4, the flow valve 53 is closed by the drive of the motor 54, and the de-roll is removed. The amount of supply to the rolls 3 and 4 is reduced to reduce the workload of the sorting tube 18, and the amount of return to the return gutter 28 is also reduced.
Aim to reduce the amount of brown rice taken out at step 8.

On the other hand, the flow rate of reduced rice was less than the standard amount and the sorting tube 1
The amount of sorting throughput in step 8, that is, the amount of work load, is lower than the standard state, which is bad for work efficiency, and the brown rice receiving gutter 2
When the sorting accuracy is poor to extract a large amount of paddy into the flow valve 5, the motor 54 is driven to close the flow valve 5.
3 opens and increases the amount of supply to the derolling pipes 3 and 4, reducing the amount of work load in the sorting tube 18 and the reduction gutter 2.
This increases the amount of reduction in step 8, and as a result, it is possible to prevent a decrease in work efficiency and to prevent instability in sorting performance.

As is clear from the above embodiments, the present invention has a sorting cylinder 18 that is continuously rotated in one direction and separates the mixed rice after hulling by the de-rolls 3 and 4 into brown rice and paddy, and the separated paddy is In the structure in which the rice is returned to the de-rolled rice 3 and 4 via the paddy return gutter 28, a reduced rice sensor 57 is provided to detect the flow rate of the reduced rice that is returned to the de-rolled rice 3 and 4 via the paddy return gutter 28, The reduced rice sensor 57 is connected to the opening/closing mechanism 54 of the grain flow valve 53 that adjusts the amount of grain supplied to the derolled rice 3 and 4, and the grain flow rate is adjusted by increasing or decreasing the flow rate of the reduced rice. In addition to controlling the opening and closing of the valve 53, the terminal end of the sorting tube 18 is formed flat, and the reduced rice sensor 57 is installed at the starting end of the paddy reducing gutter 28 that falls from the flat surface of the sorting tube 18.
With this, the amount of sorting throughput (work load) in the sorting tube 18 and the amount of returned rice can be maintained at an appropriate constant standard state at all times, and the work efficiency in sorting can be maintained at a constant level and the sorting performance can be maintained stably. In addition, it is possible to prevent an increase in defective rice such as grained rice or broken rice due to double sanding, and to perform efficient and good sorting work. Since the grains falling from the flat surface of the sorting tube 18 are detected by the method, the grains falling down from the flat surface can be detected in a more stable manner, thereby providing practical effects such as stable flow rate detection. It is.

[Brief explanation of the drawing]

Fig. 1 is an overall side view showing one embodiment of the present invention, Fig. 2 is a side view of the same, Fig. 3 is a cross-sectional view of the same, and Fig. 4 is a side view of the entire embodiment.
The figure is a sectional view of the sorting section, FIG. 5 is an enlarged view of the same, and FIG. 6 is a control circuit diagram of the flow valve. 3, 4... De-rolling, 18... Sorting tube, 28... Rice return gutter, 53... Grain flow rate valve, 54... Opening/closing mechanism, 5
7...Reduced rice sensor.

Claims (1)

[Scope of utility model registration request] Sorting tube 18 that rotates continuously in one direction and separates the mixed rice after hulling into brown rice and paddy using derolls 3 and 4.
and a structure in which the separated paddy is reduced to the derolled rice 3 and 4 via the paddy reduction gutter 28,
A reduced rice sensor 57 detects the flow rate of reduced rice that is returned to the de-rolled rice 3 and 4 through the paddy return gutter 28.
and an opening/closing mechanism 54 for a grain flow valve 53 that adjusts the supply amount of flour supplied to the derolling 3, 4.
The reduced rice sensor 57 is connected to the reduced rice flow rate to control the opening/closing of the grain flow valve 53 depending on the increase/decrease in the flow rate of the reduced rice. The reduced rice sensor 5 is installed at the starting end of the paddy reducing gutter 28 that falls from the flat surface of the tube 18.
A mixed rice sorting device for a huller, which is characterized by being equipped with 7.