JPH04330950A - Device for adjusting clearance between hulling rolls of paddy separator - Google Patents

Abstract

PURPOSE:To improve the sorting efficiency or to prevent the skin rasping of hulled rice by adjusting the clearance between the fresh rice hulling rolls and that between return rice hulling rolls, based on the respective standards in the paddy separator provided with the fresh rice hulling rolls and the return rice hulling rolls for hulling the rice sorted in the mixed rice sorting part. CONSTITUTION:A couple of fresh rice hulling rolls 3a and 3a and rolls 3b and 3b for hulling the rice returned from a rotary sorting cylinder are provided, the clearances between the rolls are respectively adjusted by different means, and the clearance between the fresh rice hulling rolls and that between the return rice hulling rolls are controlled based on the hulling rate standard or load current standard. In this case, the clearance between the return rice hulling rolls is made wider or narrower than that between the fresh rice hulling rolls.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] This invention relates to a new hulling roll for hulling paddy grains, and a grain mainly composed of paddy grains after being sorted in a mixed rice sorting section that separates paddy grains into paddy and brown rice. In a hulling sorting machine equipped with a reduction hulling roll for hulling grains, the hulling roll
The present invention relates to a hulling roll gap adjustment device for adjusting the gaps between the hulling roll and the reduction hulling roll, respectively, based on different standards.

0002

[Prior Art] A hulling section for hulling rice with a pair of hulling rolls;
There is a rice hulling sorting machine that is equipped with a mixed rice sorting section that sorts mixed rice such as paddy and brown rice with a rotary sorting tube that has a large number of pot holes on its inner circumferential surface and rotates around a horizontal axis. Such a hulling sorter has a pair of hulling rolls that hull new grains of rice,
Equipped with a reduction huller roll that hulls the reduced grains after sorting in the mixed rice sorting section that separates the mixed rice after hulling into paddy and brown rice, and produces new paddy grains and reduced paddy grains. Some rice grains are hulled using separate hulling rolls.

0003

[Problems to be Solved by the Invention] However, this conventional device has a new method of adjusting the gap between the hulling rolls that hull the rice grains, and hulling the reduced grains from the mixed rice sorting section. No special consideration was given to adjusting the gap between the reduction hulling rolls.
There were problems with the hulling efficiency and grain chafing. Therefore, this invention provides a novel method for adjusting the gap between the hulling rolls that hull the rice grains and the gap between the reduction hulling rolls that hull the reduced grains from the mixed rice sorting section. The present invention attempts to overcome the drawbacks of the conventional apparatus by adjusting the gap between the hulling rolls based on different criteria.

0004

[Means for Solving the Problems] In order to solve the problems of the prior art, the present invention takes the following technical measures. That is, the present invention provides a pair of new hulling rolls 3a, 3a for hulling new rice grains, and a pair of new hulling rolls 3b, 3b for hulling reduced grains from the mixed rice sorting section.
The gap can be adjusted by a roll gap adjusting means, and the new hulling rolls 3a, 3a and the reduced hulling roll 3b are constructed.
, 3b on the basis of the shedding rate or the load current, the gap between the reduced hulling rolls 3b, 3b is adjusted on a narrower or wider basis than the gap between the new hulling rolls 3a, 3a. The present invention has the configuration of a hulling roll gap adjustment device for a hulling and sorting machine.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the present invention shown in the drawings will be described below. First, the configuration of the embodiment will be explained. Reference numeral 1 denotes a hulling section, and this hulling section 1 is composed of a rice hopper 2, a pair of hulling rolls 3, 3, and the like. Reference numeral 4 denotes a sloughed rice wind selection path, in which the sloughed rice from the hulling section 1 is sorted by the sorting wind generated by the suction fan 5 in front, and the rice husks are passed from the suction fan 5 through the dust exhaust tube 6 to the machine. The mixed rice of brown rice and paddy is discharged to the outside and is supplied falling to the sliding rice receiving trough 7 below. The mixed rice that has fallen into the fallen rice receiving gutter 7 is fried by the mixed rice lifting machine 8 into the mixed rice hopper 9, and is conveyed from the mixed rice hopper 9 to the starting end of the supply gutter 14 in the rotary sorting cylinder 11. It is the composition.

10 is a sorting case, and this sorting case 1
0 has a supply side end (right side in FIG. 1) and a discharge side end so that the rotary sorting cylinder 11, which has a large number of pot holes 11a, 11a, ... on its inner peripheral surface, can rotate around the horizontal axis. (Fig. 1
(left side) is rotatably supported by drive rollers 12, 12. Inside this rotary sorting cylinder 11, a supply helix 13 is provided.
A supply gutter 14 with a finishing rice helix 15 and a finishing rice gutter 16 with a finishing rice helix 15 are installed horizontally.

When disposing the supply gutter 14 and the finished rice gutter 16 inside the rotary sorting cylinder 11, the supply gutter 14 is placed on the raking side of the rotary sorting cylinder 11, which rotates from the bottom to the top, as shown in FIG. In addition, the finishing rice gutter 16 is transferred to the rotating sorting cylinder 1.
The mixed rice scraped up low by the pot holes 11a, 11a... of the rotary sorting tube 11 falls into the supply gutter 14 and the rotary sorting tube 11, The mixed rice that has fallen into the feed helix 13 is transferred to the feed gutter 14.
The supply gutter 14 also functions as a mixed rice receiving gutter.

The discharge side end of the finishing rice gutter 16 is connected to a finishing rice receiving trough 19 via a finishing rice flow lower cylinder 17 and a finishing rice flow grain plate 18, and the brown rice is passed through the finishing rice flow lower cylinder 17 and the finishing rice flow. While falling from the grain plate 18 to the finished rice receiving trough 19, it is wind-selected,
The brown rice flowing down into the finished rice receiving trough 19 is taken out of the machine via the finished rice lifting machine 20. Rotary sorting cylinder 11
The grains mainly composed of unhulled rice after sorting flowed to the discharge side end of the husks fall into the lower paddy receiving trough 21, and are returned to the hulling section 1 through the return paddy hopper 23 in the paddy lifting machine 22. The rice is hulled again in the hulling section 1.

[0009] Next, to explain the hulling section 1 in more detail, a pair of new hulling rolls 3a, 3a for hulling new rice grains, a rice hopper 2, etc. to which new rice grains are supplied, etc. A reduced huller consisting of a new huller, reduced huller rolls 3b, 3b, reduced rice hopper 23, etc. that hull the reduced grains from the rotary sorting cylinder 11, which is a mixed rice sorter. The gap between the new hulling rolls 3a, 3a and the gap between the reduced hulling rolls 3b, 3b are adjusted separately by a roll gap adjustment means 25 driven by a roll gap adjustment motor 24. It is.

Next, referring to FIGS. 5 and 6,
26 is a hull removal rate sensor consisting of a light emitting element and a light receiving element, and this hull removal rate sensor 26 includes a new hulling roll 3a.
, 3a and reduced hulling rolls 3b, 3
The structure is such that sample grains of grains hulled in step b are alternately supplied. This scrapping rate sensor 26 is connected to an arithmetic control section 27 consisting of a CPU incorporating an arithmetic section and a register section, a program memory, and an arithmetic memory. 28 is a husking rate setting switch, and this husking rate setting switch 28 is used for new hulling rolls 3a, 3 for hulling new paddy.
It has a function of setting the shedding rate of the scraped rice that is scraped off at step a, and 29 detects the load current value of the main motor 30 that drives the new hulling rolls 3a, 3a or the hulling sorter. It is a load current sensor, 31 is a paddy supply valve opening sensor that detects the opening degree of the paddy supply control valve 32, and 33 is a supply amount setting switch that sets the opening degree of the paddy supply control valve 32 and specifies the work efficiency. These husking rate sensor 26, husking rate setting switch 28, load current sensor 29, paddy supply valve opening sensor 31, and supply amount setting switch 33 are controlled by the calculation control unit 2.
7 is connected. In addition, the new hulling rolls 3a, 3a
It is also possible to separately provide a motor for driving the husks and a motor for driving the reduction hulling rolls 3b, 3b.

[0011] Also, new hulling rolls 3a,
A roll gap adjustment motor 24 that operates a roll gap adjustment means 25 that adjusts the roll gap of 3a, and a reduction hulling roll 3.
A control command signal is output to the reduction roll gap adjustment motor 24 that operates the reduction roll gap adjustment means 25 that adjusts the roll gap of rollers b and 3b, and the shutter opening degree adjustment motor 35 that adjusts the opening and closing of the paddy supply control valve 32. This is the configuration that will be used.

Next, the control contents of the arithmetic control section 27 will be explained. (1) First, when the husking rate setting switch 28 and the supply amount setting switch 33 are set to predetermined scales and the operation switch (not shown) is operated, each rotating part of the huller is driven. Then, the initial gap setting control for the new hulling rolls 3a, 3a, that is, the control command signal from the calculation control section 27 is sent to the roll gap adjustment motor 24, and the roll gap adjustment means 25
is operated to open a gap between the new hulling rolls 3a, 3a for a predetermined period of time, and when the load current sensor 29 detects a non-contact state of the rolls where the load current value does not change, the new hulling rolls 3a, 3a is narrowed, and then, when an increase in the load current is detected and a slight contact between the new hulling rolls 3a, 3a is detected, the roll gap adjustment means 25 is adjusted to open for a predetermined time, and the new hulling rolls 3a, 3a are opened. The gap is opened for a predetermined period of time, and an initial gap (for example, 0.8 mm) is set. Next, the initial gap between the reduction hulling rolls 3b, 3b is set in the same manner. The new hulling rolls 3a, 3a and the reduction hulling rolls 3b, 3b are driven by separate motors, each motor is equipped with a load current sensor, and the new hulling rolls 3a, 3b are driven by separate motors. Gap adjustment of 3a and reduction hulling roll 3b
, 3b may be simultaneously adjusted. ■
Next, an opening command signal from the calculation control unit 27 is output to the shutter opening adjustment motor 35 for a predetermined period of time, and the initial opening is set to open the paddy supply control valve 32 of the hulling section 1 to a predetermined opening (for example, 10 mm). Then, a control command signal based on the adjustment setting of the supply amount setting switch 33 is sent to the shutter opening adjustment motor 35, and the paddy supply control valve 32 is adjusted to the set opening. . In this embodiment, an on-off valve is not provided at the lower part of the reduced rice hopper 23, but an on-off valve is provided and an on-off motor (not shown) is provided.
It is also possible to adjust the opening and closing according to the situation of rice hulling work. . ■Then, the removal rate control is started, and first, the removal rate sensor 26
The light intensity is adjusted to an appropriate light intensity for the light emitting element to distinguish between paddy and brown rice, and then the new hulling roll 3a
, 3a and the sample grains of grains hulled by the reduction hulling rolls 3b, 3b are alternately supplied to the hulling rate sensor 26 and pass through the hulling rate sensor 26. The voltage signals of the sampled grains are input to the arithmetic control section 27, and the voltage signals of a predetermined number of sample grains are read and the dehulling rate is calculated alternately. ■Next, based on the calculated dropout rate of the husband,
Gap between new hulling rolls 3a, 3a and reduced hulling roll 3
b, 3b, the gap between the reduction hulling rolls 3b, 3b is set by a predetermined amount or a predetermined ratio wide standard in relation to the setting of the dehulling rate setting switch 28, and the arithmetic control unit When the calculated shedding rate is higher or lower than the control standard shedding rate, the roll gap adjustment motor 24 is opened or A close command signal is output, and the gap between the new hulling rolls 3a, 3a is adjusted to the open side or the closed side by a predetermined amount, and even if the calculated husking rate is within the range of the standard husking rate. For example, the control command signal is not output, and the hulling work is performed while maintaining the same hulling roll gap. Similarly, the control command signal is also output to the return roll gap adjustment motor 34, and the Husking roll 3b, 3
The gap b is adjusted to be wider than that of the new hulling rolls 3a, 3a, and the hulling and sorting work can be performed while preventing brown rice from chafing.

[0013] Instead of this embodiment, when adjusting the gap between the new hulling rolls 3a, 3a and the reduced hulling rolls 3b, 3b based on the removal rate,
By adjusting the gap b on a basis narrower than the gap between the new hulling rolls 3a, 3a, it is possible to increase the shedding rate of reduced grains and improve the hulling efficiency. In addition, instead of adjusting the gap between the hulling rolls based on the hulling ratio, the load current value of the motor that drives the new hulling rolls 3a, 3a and the reduced hulling rolls 3b, 3b can be adjusted. It may also be configured to detect this and adjust and control the hulling roll gap based on the load current.

In addition, when adjusting the gap between the new hulling rolls 3a, 3a and the gap between the reduced hulling rolls 3b, 3b, the gap between the new hulling rolls 3a, 3a is compared with the standard value. When adjusting to close or open gap,
As shown in FIG. 7, if the gap between the reduction hulling rolls 3b and 3b is adjusted to open or close, the rotary sorting cylinder 1
The roll gap corresponds to the amount of grain returned from 1,
You can do the hulling work efficiently.

In addition, in adjusting the gap between the new hulling rolls 3a, 3a and the gap between the reduced hulling rolls 3b, 3b, the amount of reduced grains from the rotary sorting tube 11 is reduced as shown in FIG. It is detected by a quantity sensor (not shown), and when the amount of reduced grains is large or small, the gap between the reduced hulling rolls 3b and 3b is adjusted to open or close, and the gap between the new hulling rolls 3a and 3a is closed. Alternatively, if the structure is adjusted to open, the amount of reduced grains can be reduced and efficiency can be increased.

In addition, instead of adjusting the gap between the new hulling rolls 3a, 3a and the gap between the reduced hulling rolls 3b, 3b in relation to each other, as shown in FIG. It may be configured to increase or decrease the shedding rate through adjustment. Moreover, an impact-type hulling device may be adopted instead of the new hulling rolls 3a, 3a and the reduced hulling rolls 3b, 3b.

Next, the operation of the embodiment will be explained. When carrying out hulling work, raw rice is supplied to the rice hopper 2, and each rotating part of the hulling and sorting machine is driven. Then, the paddy supplied from the paddy hopper 2 to the new hulling rolls 3a, 3a is hulled,
The fallen rice is wind-selected in the lower fallen rice wind selection path 4, and the rice husks are discharged from the dust exhaust pipe 6 to the outside of the machine. The mixed rice of brown rice and paddy is dropped and supplied to the sliding rice receiving trough 7, and is lifted to the starting end side of the supply trough 14 on the rotary sorting cylinder 11 side via the mixed rice hopper 9 in the mixed rice lifting machine 8. The supply helix 13 in the supply gutter 14 is supplied from above.
and is supplied to the supply side end of the rotary sorting cylinder 11.

Next, the mixed rice is scraped up by the pot holes 11a, 11a, . . . of the rotary sorting cylinder 11 rotating clockwise in FIG. The rice mixed with long grain paddy and some brown rice is scraped up into the supply gutter 14 or the rotary sorting cylinder 1.
1 and will be sorted out. Then, the unsorted mixed rice that has fallen into the supply gutter 14 is fed again into the rotary sorting tube 11 from the conveyance terminal end of the supply gutter 14 by the supply helix 13, and is re-sorted.

The brown rice that has fallen into the finishing rice gutter 16 is conveyed by the finishing rice helix 15 to the finishing rice flow lower cylinder 17, passes through the finishing rice grain plate 18, and falls into the finishing rice receiving gutter 19 while being sorted by the sorting wind. The rice is sorted by wind and taken out of the machine by the finished rice lifting machine 20. In addition, grains mainly consisting of unhulled rice after sorting sent to the discharge side end of the rotary sorting cylinder 11 flow into the lower paddy receiving trough 21 and are returned to the return paddy hopper 23 by the paddy lifting machine 22. Then, the rice is hulled again by the reduction hulling rolls 3b, 3b.

During the hulling and sorting work as described above, sample grains of new grains of unhulled rice hulled with the new hulling rolls 3a, 3a and reduced rice grains hulled with the reduced hulling rolls 3b, 3b are sample grains. The sample grains of fallen rice are alternately supplied to the hulling rate sensor 26, the voltage signal of paddy/brown rice is read, and the hulling rate sensor 2
When the number of grains that have passed through step 6 reaches a predetermined number, the dehulling rate is calculated alternately, and then, based on each calculated dehulling rate,
If the calculated hulling rate is higher or lower than the control standard hulling rate based on the criterion that the gap between the reduction hulling rolls 3b and 3b is wide by a predetermined amount or a prescribed ratio, the new hulling rolls 3a,
The gap between the rolls 3a and the reduced hulling rolls 3b, 3b is adjusted, and the hulling and sorting work is performed while preventing the brown rice from chafing.

[0021]

Effects of the Invention In this way, based on the calculated shedding rate or the load current value of the hulling rolls, the reduced hulling rolls 3b, 3b
If the gap is wider than the gap between the new hulling rolls 3a, 3a by a predetermined amount or according to the pinching standard, the new hulling rolls 3a, 3
Since the gap a and the reduced hulling rolls 3b, 3b are adjusted, the hulling and sorting work can be performed while preventing chafing of the brown rice or increasing the hulling efficiency.

[Brief explanation of drawings]

[Figure 1] Whole cutaway side view

[Figure 2] Whole cutaway rear view

[Figure 3] Plan view of main parts

[Figure 4] Cutaway side view of main parts

[Figure 5] Block circuit diagram

[Figure 6] Flowchart

[Figure 7] Flowchart

[Figure 8] Flowchart

[Figure 9] Flowchart

[Explanation of symbols]

1. Husking section 2 Paddy hopper 3. Husking roll 3a New hulling roll 3b Reduced rice hulling roll 4 Surirakumeikaze Route 5 Suction fan 6　Dust exhaust pipe 7. Dropped rice catcher 8 Mixed rice frying machine 10 Sorting case 11 Rotating sorting cylinder 11a pothole 12 Drive roller 13 Supply helix 14 Supply gutter 15 Finishing rice spiral 16 Finished rice gutter 17 Finishing rice flow down tube 18 Finished rice grain board 19 Finished rice catcher 20 Finished rice grain lifting machine 21 Paddy receiving trough 22 Paddy lifting machine 23　Reduction paddy hopper 24 Roll gap adjustment motor 25 Roll gap adjustment means 26 Shedding rate sensor 27 Arithmetic control section 28 Skipping rate setting switch 29 Load current sensor 30 Main motor 31 Paddy supply valve sensitivity sensor 32 Paddy supply control valve 33 Supply amount setting switch 34　Reducing roll gap adjustment motor 35 Shutter opening adjustment motor

Claims (1)

[Claims] Claim 1: A gap between a pair of new hulling rolls 3a, 3a for hulling new rice grains and a pair of reduced hulling rolls 3b, 3b for hulling reduced grains from the mixed rice sorting section. In adjusting and controlling the gaps between the new hulling rolls 3a, 3a and the reduced hulling rolls 3b, 3b based on the husking rate or the load current, the reduced hulling A hulling roll gap adjustment device for a rice hulling sorter, characterized in that the gap between the rolls 3b, 3b is adjusted on a basis that is narrower or wider than the gap between the new hulling rolls 3a, 3a.