JPH03224639A - Controlling device for gap of husking roll in rice husker - Google Patents

Abstract

PURPOSE:To maintain the proper husking ratio correspondent to actual husking operation by detecting and storing the actual husking ratio in the operation state having the proper husking ratio and automatically adjusting and controlling the gap of the husking rolls while holding the actual husking ratio as reference husking ratio. CONSTITUTION:An initial gap between the husking rolls 3, 4 is continued for a set time. In the meantime, one part of blending rice is supplied to the sensor 51 of husking ratio. The husking ratio is detected together with voltage for discriminating paddy and rice. After the preset time elapses, the sensor 51 is transferred to control of the husking ratio. In other words, in comparison with the preset husking ratio, when the husking ratio is preset in a proper range, the gap between the husking rolls is intactly maintained. When this husking ratio is made lower than the preset husking ratio, the rolls are closed by the output of normal rotation of a control motor. The gap of the rollers is reduced and the husking ratio is enhanced. Further when the detected husking ratio is made excessively high, the rolls are reversely opened by the output of contrarotation of the control motor. The husking ratio is periodically detected and control is repeated during rice husking and sorting work.

Description

[Detailed description of the invention] related.

[Prior art and the problem to be solved by the invention] Among a pair of de-wall removal rolls, one is configured as a fixed roll and the other is configured as an orthogonal roll so that the gap between the two can be controlled wide and narrow, and the width and narrowing control is performed by sliding. This is done by setting the culling rate value of the rice. That is, an optical detection means is used to detect the dehulling rate of mixed rice, and a certain paddy/brown rice discrimination value is set in consideration of the difference between the output of paddy and the output of brown rice, and the detected output is It is classified as paddy or brown rice based on whether or not it exceeds the brown rice discrimination value, and the dehulling rate value is calculated for each predetermined number of grains, and the dehulling rate value is determined based on the comparison with the predetermined dehulling rate value. The roll-to-roll WA adjustment means can be controlled.

By the way, when performing such conventional dehulling rate control, for example, the green rice contamination rate is abnormally high.

Alternatively, for mixed rice samples such as glutinous rice, which have relatively large variations in the difference in transmitted light between brown rice and paddy, the accuracy of the dehulling rate sensor is poor, and roll gap control based on the preset deculling rate value is not effective. This may result in work proceeding at different deburring rates.

[Means for Solving the Problem] The present invention attempts to solve the above-mentioned drawbacks, and includes a mouth-to-hole gap adjusting means for adjusting and setting the gap between a pair of deculling rolls 3 and 4, and a means for adjusting the gap between the pair of deculling rolls 3 and 4, and a means for adjusting the gap between the pair of deculling rolls. a hole removal rate detection means for detecting the hole removal rate; a storage means for storing the detected hole removal rate upon knowing the end of the roll gap adjustment setting operation based on the adjustment based on the set gap; Is it il'?
This rice hulling machine is comprised of a comparison means for comparing the standard dehulling rate and the detected dehulling rate, and a control means for automatically adjusting the gap between the dehulling rolls 3 and 4 so that the two rates are substantially the same. The structure of the de-wall gap control device is as follows.

[Operation and effect of the invention]

When the dehulling operation is started, paddy is supplied between the dehulling rolls, and the worker arbitrarily adjusts the roll gap adjustment means to obtain proper dehulling operation. As a result, the storage means detects and stores the actual Western book in the relevant operating state, and this memorized rate of departure from school is taken as the rate of departure from school, and is determined based on comparison with the detected rate of departure from school that is subsequently detected. The roll gap will be automatically adjusted and controlled.

Therefore, the comparison with the detected dropout rate is not done based on the preset dropout rate, but the actual weekly IE volatility status is obtained and the P'P dropout rate becomes the standard 4fi. There is an advantage that an appropriate demolition rate commensurate with the demolition operation can be maintained.

〔Example〕

An embodiment of this invention will be described based on the drawings.

Reference numeral 1 denotes a dehulling section, which has a supply funnel 2 at the top and is composed of a pair of dehulling rolls 3 and 4 for dehulling the paddy from the second part of the supply funnel.

Between these deburring rolls The rotating shaft 6 is supported directly by the frame 5.

The other end is pivotally supported by a moving shaft 9 supported by a swinging member 8 which is swingably provided on the frame 5 via a support +1l17. -1- The fixed shaft 6 has a configuration in which the driving force is manually applied, and the gear 11 between gears 10 and 4 of the fixed shaft 6'' is
．． 12, rotations of different rotation speeds and directions are transmitted to the gear 13 of the moving shaft 91-.

”-Memory 1 A cylindrical portion 14 is formed on one side of the frame 5, and a cylindrical member 16 that can rotate integrally with the setting dial 15 is inserted into this cylindrical portion 14, and the tip screw portion 17 is inserted into the cylindrical portion 14. The base of an interlocking arm 18 that is screwed into the V+ moving member 8 is rotatably supported. That is, when the setting dial 15 is rotated in the forward or reverse direction, the cylindrical member 16. Locking protrusion 19. Related IF:
, is transmitted to the interlocking arm 18 with a pin 20, etc., and the swinging member 8 is configured to be swingable left and right about the support shaft 7.

Reference numeral 21 denotes a control motor, which is configured to be able to perform IH reverse rotation.A gear 22 provided integrally with the setting dial 15 and a motor gear 23 provided on the output shaft of the control motor 21 are meshed to cause the control motor 21 to rotate in the normal direction. Due to the pair of breakout rolls 3
, 411dl gap is reduced, and the gap is expanded by reverse rotation (roll gap adjustment calling mechanism).

A shutter 25 is rotatably provided between the support shafts at the lower opening of the supply funnel 2, and the opening degree of the supply port can be adjusted and set using an adjustment lever (not shown). It is configured to be able to move simultaneously to the fully open position 14.

A sorting air passage 27 is formed at the bottom of the dehulling rolls 3 and 4, and the chaff, dust, and ends of the milled rice that has passed between the dehulling rolls 3 and 4 are separated by the action of a suction fan 28. The rice husks and dust are discharged to the outside of the machine through the dust removal cylinder 29, and the arsenic is accumulated in the middle of the sorting air passage 27 and downward.

The wind-selected rolled rice, that is, the mixed rice of paddy and brown rice, is configured to reach a simultaneous sorting section 33 via a receiving sakaki 30, a transfer spiral 31, and a grain thrower 32.

The rotary sorting section 33 includes a sorting tube 34 and a mixed rice transfer gutter 35.
, finishing rice gutter 36, etc. The sorting tube 34 has a large number of pot holes 37, 37 formed in its inner circumferential surface, and is arranged so as to be rotationally interlocked with a substantially horizontal axis. These mixed rice transfer gutter 35
, finished rice@36 are each provided with a transfer spiral 38, 39, and the mixed rice transfer e35 is transferred from the mixed rice guide section 40 to the sorting tube 34.
The apparatus is configured to supply mixed rice to the starting end of the apparatus. Further, the finished rice @36 is configured to receive and transfer brown rice that is scooped into the -1-marked pot hole and lifted to a high position. Note that the receiving port is widened at the upper side over almost the entire length except for the transfer starting end so that some of the grains that fall out of the pot hole at a low position are received by the mixed rice transfer gutter 35 and returned to the starting end. It has an inverted V-shaped cross section so that it can be opened.

Reference numeral 41 denotes a finishing valve provided on the mixed rice scraping side of the finishing rice gutter 36, and is configured to be adjustable in angle by operating an optional adjustment lever (not shown) outside the machine.

The terminal end of the finished rice 036 is directed into the brown rice flowing tube 42, and the flowing brown rice passes through the receiving gutter 43 and reaches the brown rice IfA44.
The grains are transferred to the grain lifting machine 46 via the transfer end ##45 and taken out of the grain lifting machine 46.

Grain frying blades 47° 47 are arranged on the inner peripheral surface of the terminal end of the sorting tube 34, and the paddy containing some brown rice reaching the terminal end of the sorting tube 34 is passed through the receiving @1148, 335 source passage 49. supply funnel 2
The structure is designed to reduce the 5o is a refill roll.

Reference numeral 51 denotes a dehulling rate sensor, which is provided with a light emitting element 53 above and a light receiving element 54 below at the terminal end of the vibrating chute 52. The system receives the mixed rice supplied through the system, detects the transmitted image of each grain, and determines whether it is paddy or brown rice in the arithmetic and control section (described later).

Reference numeral 56 denotes a drive motor, which is configured to rotate and interlock the rotating shaft 6 that supports the fixed roll 3 of the de-walling section 1 via a belt or the like, and also to rotate and interlock the sorting section 33 via an appropriate speed reduction mechanism. .

FIG. 4 is a block diagram, and 57 is a calculation control unit (CPU) of a microcomputer having a memory for storing control programs, data, etc. Cell rate sensor 51
The detection output from the drive motor 56 load current detector (C
, T) 58, the setting output of the removal rate setting switch 60 provided on the operation panel, the removal rate switch 61 (control motor forward rotation), the down switch 62 (control motor reverse rotation), ), and on the other hand, the output information includes the forward rotation or reverse rotation output of the control motor 21, the excitation output of the solenoid 26 that interlocks the shutter 25 to fully open, and the like. 63 is a normal rotation circuit that drives the control motor 21 in normal rotation in response to the normal rotation signal, 64 is a reverse rotation circuit for the control motor 21 in response to the reverse rotation signal, and 65 is an excitation circuit that excites the shutter solenoid 26. The main functions of the CPU 57 are as follows. (2) In response to the input signal from the start switch 66, a drive command signal is output to the drive motor 56.

(2) If a reverse rotation signal is intermittently outputted to the control motor 21 by the signal of the switch 59, and it is determined that the load current information of the C0T 58 does not change.

A rotation stop signal is output to the control motor 21. The load current at the time of the stop is memorized, and then a normal rotation signal is output to the control motor 21, and when a change in the load current occurs (slight contact state of the removal roll 3.4), a reverse rotation command signal is given to the control motor 21. Continuously output the time, for example, for a time corresponding to the demolition roll gap of 0.8 m (demolition roll gap initial setting means);
After the completion of ■■, the shutter starter 25 solenoid 26 excitation signal is output.

■After completing the initial setting of the specified roll gap, operate the timer mechanism to maintain this gap for a predetermined period of time, read the detected voltage V information of the sample grains that passed the dehulling rate sensor 51 within that time, and calculate the appearance frequency. The average value of high sample grains is calculated and the paddy standard voltage Vm and brown rice grain standard voltage Vg are determined respectively.
Then, these intermediate voltages are calculated as the paddy/unprinted voltage V.

Based on the discrimination voltage of ■■, those exceeding this are determined to be paddy, and those below are determined to be brown rice, and the dehulling rate D is determined for each predetermined number of grains.
Calculate (=number of brown rice grains/(number of brown rice grains, tens of grains)).

``■'' After the set time has elapsed, the control motor 21 is
Outputs forward and reverse signals at each timing set by the number of detected grains, etc. (removal control means), and outputs a stop signal for the drive motor 56 in response to an input signal from a stop switch (not shown). It is 0 etc.

The operation on the upper side will be explained according to the flowchart in FIG.

Set the desired demolition rate in advance using the demolition rate setting switch (not shown) (step 10), and turn on the start switch 66.
(Step 20), the IK motor 5G is started, and the initial setting operation of the culling roll 3.4 gap is performed (Step 30). When this is completed, the solenoid 26 is energized and the shutter 25 is opened.

The paddy from the supply funnel 2 is transferred to a dehulling roll 3 with a set gap.
The mixed rice that has been removed and wind-sorted is transferred to the mixed rice guide cylinder 18. The mixed rice transfers through the gutter 33 and then into the sorting tube 3.
Supplied within 2 days.

The above-mentioned initial gap continues for a set time, during which time a part of the -1- mixed rice is supplied to the de-hulling rate sensor 51, and the de-hulling rate is detected along with calculating the voltage for paddy and un-hulled rice (step 40).
After the time has elapsed, the process shifts to so-called dropout rate control. When this detected culling rate is within the appropriate range in comparison with the set culling rate described in Section 1F (step 50), the culling roll gap is maintained as it is, and when it is lower than this set culling rate, the control motor 21 'iF, roll 'closed 1 by transfer output
The roll gap is reduced to increase the demolition rate (step 60), and when the detected demolition rate is too high, the rolls are opened by the reverse output of the control motor 21 to widen the roll gap (step 60). Step 70): During the hulling and sorting work, the dehulling rate is periodically detected and the above control is repeated.

When the dehulling work has stabilized, take out the mixed rice from an appropriate mixed rice confirmation port (not shown) and visually judge whether or not an appropriate dehulling rate has been obtained.

If it is determined that the resulting removal rate is low, the removal switch 61 is operated (step 80). Then, the normal rotation circuit 63 is turned on with a pulse output, and the demolition roll is "closed" by a certain amount (step 90), and this process is repeated to obtain an appropriate demolition rate.

When a predetermined period of time elapses after the signal from the switch 61 is interrupted, the exit rate at that time is calculated by the exit rate sensor 51 (step 100), and this exit rate is set first. Standard dropout rate. (Step 110) The new reference arm becomes the S rate, and it is compared with the subsequent detection break rate. If the detection break rate D>Reference arm ll lead, (Step 120) When the output of "open" is output, the roll gap is widened, and conversely, when the detected wall removal rate is higher than the reference wall removal rate (step 130), the roll gap is reduced by the "close" output of the wall removal roll. .

Further, when it is determined that the demolition rate confirmed by the visual judgment described in -1- is high, the demolition weight lowering switch 62 is operated (step 140). Then, the reversing circuit 64 is turned on with a predetermined pulse output, and the demolition roll is kept in a constant "open" operation (step 150), and this process is repeated to obtain an appropriate demolition rate. When a predetermined period of time has elapsed since the demolition weight lowering switch 62 was not pressed, the demolition rate D3 at that time was calculated by the demolition rate sensor 51 (step 160), and this demolition rate D2 was compared to the previous standard demolition rate. is replaced with (step 170), and thereafter similarly compared with the detected defective rate (
Steps 120 and 130), proper control of the clearance between the demolition rolls is performed. In addition, when the demolition rate determined by visual judgment is appropriate, the demolition rate is directly compared with the standard demolition rate Dn, and the opening/closing control of the demolition roll is performed.

The flowchart shown in Figure 1 shows an example of what to do when an overload occurs during the "close" control of the demolition roll.The flag should be reset in advance (k=o) and set to not be overloaded.Step 210 ), during the main control, if it is determined that there is an overload by monitoring C,'L"58, a flag is set (
k=1)L (Step 220), while manually inputting the signal from the removal rate sensor 51, when a certain number of handling is reached (Step 230), it is determined whether the flag is set or not.Step 240), the flag is set. In other words, if the state has not fallen into the extremely overloaded state, the detected demolition rate D (step 250) is used as the preset standard demolition rate. (
or step 2GO), compared to step 2GO),
Control the gap between the de-wall rolls to be wide and narrow (step 270.2
80). In addition, when the flag is set, that is, an overload condition occurs, a preset complement [D'' (= D + m (m > O)), which is the sum of the E constant rn, is set to the detected wall removal rate. Replacement (step 290), and thereafter repeat the removal rate control while comparing with the reference removal rate (or above, D). By providing such control,
Conventionally, the gap between the de-wall rolls was widened every time an overload occurred, so the gap between the de-wall rolls was "closed" by controlling the de-wall rate.
This eliminates drawbacks such as abrasion of the de-wall roll caused by repeated output and "open" output of the roll for overload prevention.

In the sorting section 33, the sorting cylinder 34 does not rotate and scoops up the mixed rice through the pot holes 37 and 37, the brown rice passes through the second valve 23 and is collected as finished rice @IIt36, and the long grain rice is collected at the center of gravity. The rice falls out of the pot hole at a high and relatively low position and is returned to the mixed rice layer.The above sorting is repeated from the start end to the end of the rice sorting tube 34 to separate the paddy and brown rice. brown rice l
A44. The mosquitoes are taken out of the machine through a mosquito lifter 46 and the like.

In addition, the paddy remaining at the end of the sorting tube 34 (including some brown rice) is
The grain is scooped out with a 47.47-inch hoisting blade, returned to two supply funnels, and subjected to dehulling and wind selection treatment again.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is an overall side sectional view, Fig. 2 is a front view thereof, Fig. 3 is a sectional view of main parts, and Fig. 4 is a control block diagram. 5 and 6 are flow diagrams, and FIG. 7 is a cross-sectional view of the demolition rate sensor. In the figure, 3 and 4 are demolition rolls, and 21 is a control motor. 57 is an arithmetic control unit (CPU), 58 is a noble current detector,
60 is a mulch removal rate setting switch, 61 is a culm removal main-beard switch, 62 is a culm removal weight lowering switch, 63 is a normal rotation circuit, 64
indicates a reversing circuit.

Claims (1)

[Claims] (1) Roll gap adjustment means for adjusting and setting the gap between the pair of removal rolls 3 and 4, a removal rate detection means for detecting the removal rate of the mixed rice being rubbed out, and an adjustment based on the set gap. A storage means for storing the detected removal rate upon knowing the end of the roll gap adjustment setting operation, and a comparison means for replacing the stored removal rate with a reference removal rate and comparing the reference removal rate and the detected removal rate. And, in order to make the two removal rates almost the same, remove the ■ roll 3.
, 4, and a control means for automatically adjusting the gap.