JPS63302956A - Deflating roll gap control device - 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] [Industrial application field] The present invention relates to a de-roll gap control device.

[Problems to be solved by the prior art and the invention] In recent years, the removal roll gap has been set by detecting the removal rate of rolled rice.
An automatic control system that controls the opening and closing of the roll gap while comparing the ratio with the so-called dehulling rate is becoming popular; Even if the defibrillation roll gap is narrowed, a predetermined defiring state cannot be obtained, and the roll gap may be reduced and the motor that drives the rolls may be overloaded.

[Means for solving problems]

This invention attempts to eliminate the above drawbacks and provides a pair of de-F
The gap between the dehulling rolls in the hulling device that performs dehulling while supplying paddy between 10 and 2.3 is controlled to open and close so that the detected dehulling rate becomes the set dehulling rate. In the demolition rate control device, when the detected load current value based on the load detection means of the demolition roll drive motor 40 exceeds a constant overload current value A2 which is higher than this, the current roll "close" output is stopped. The configuration of the release +q roll gap control device is characterized in that it controls and outputs a roll "open" output for a predetermined time T or a predetermined gap.

[Operation and effect of the invention]

De-f? Before starting work, set the demolition rate to a predetermined value.
When paddy is supplied between the desiliconization rolls, it is deculmmed, and the gap between the desiliconization rolls is controlled to be "open" or "closed" so that the detected desiliconization rate of the removed rice matches the set desiliconization rate. During this process, the load current of the desiliconization roll drive motor is monitored, and if this load current value exceeds a predetermined value, even if the detected desiliconization rate is lower than the set desiliconization rate and a roll gap "close" signal is output, This is controlled to stop, and a "roll r open" signal is output at regular intervals.

Therefore, paddy is difficult to escape.■. seeds or high moisture content,
Even if unripe rice is heated at a high temperature and the desiliconization rate is difficult to reach the set value, the work will not continue with the load current value remaining high, preventing overloads and interrupting work due to breaker activation, etc. There is no risk of work stagnation. This is particularly effective when, in addition to the above-mentioned difficult-to-silicon-removal conditions, there is a drop in power supply voltage and a large amount of supplied paddy.

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

Reference numeral 1 denotes a desiliconizing section, which has a pair of left and right desiliconizing rolls 2 and 3, and is configured to rotate to receive paddy from a supply funnel 4 at the top and perform a desiliconizing process. Among these, the desiliconization roll 2 is supported by a shaft 5 which is rotationally driven at a fixed position.

The wall removal roll 3 is supported by a drive shaft 7 provided on a swinging member 6. The swinging member 6 includes an adjusting screw 8 having a threaded portion on the tip side.
It is configured to swing around the proximal side shaft support by interlocking the forward and reverse rotations of , and the desiliconizing roll 3 can be moved near and far from the desiliconizing roll 2, and the gap therebetween can be adjusted to be wide or narrow. 9
is a control motor, and its forward and reverse rotations are configured to interlock the adjusting screw 8 through interlocking gears 10, 1, interlocking cylindrical shaft 12, interlocking pin 13, etc. 14 is a roll gap setting dial provided integrally with the cylinder shaft 12.

Reference numeral 15 denotes an opening/closing shutter provided at the opening of the supply funnel 4, which opens to a predetermined open state when the solenoid 16 is energized, or becomes openable when receiving a predetermined grain type, or detects the amount of mixed rice entering the sorting device described later. The opening can be adjusted based on the results.

A sorting air passage 17 is formed below the desiliconizing rolls 2 and 3, and the rice husks, dust, and grains in the polished rice that has been deculled between the desiliconizing rolls 2 and 3 are removed by the action of a dust exhaust fan 18. The rice husks and dust are separated and discharged to the outside of the machine via the dust exhaust cylinder 19, and the desk is collected in the middle of the sorting air passage 17 downward.

The wind-selected rice, ie, the mixed rice of paddy and brown rice, is configured to reach the rotary sorting section 23 via a receiving trough 20, a transfer spiral 21, and a grain thrower 22.

The rotary sorting section 23 includes a sorting Jli 24, a mixed rice transfer gutter 25, a finishing rice gutter 26, and the like. The sorting cylinder 24 has a large number of pot holes 24a, 24a, . Each of the mixed rice transfer gutter 25 and the finished rice transfer gutter 26 has a transfer spiral 27.2.
8, and the mixed rice transfer gutter 25 is configured to supply mixed rice from the mixed rice guide cylinder 29 to the starting end of the sorting cylinder 24. still,
The finishing rice gutter 26 receives and transfers the brown rice that is scooped up into the pot hole and lifted to a high position, and some of the grains that fall off from the pot hole at the low position are received by the mixed rice transfer gutter 25 and transferred to the starting point again. In order to be returned to the side, the receiving port is formed to have an inverted V-shaped cross section so as to widen at the top over almost the entire length except for the transfer start end side.

30 is a finishing adjustment valve provided on the mixed rice scraping side of the finishing rice gutter 26, which is an optional adjustment lever outside the machine (not shown).
The angle can be adjusted freely by operation.

The terminal end of the finished rice gutter 26 is exposed to the brown rice flow down cylinder 31, and the flowing brown rice passes through the receiving gutter 32, reaches the brown rice gutter 33, and is transferred to the finished rice thrower 35 via the transfer spiral 34. It is configured to be taken out.

A grain lifting blade 36.3 is provided on the inner circumferential surface of the terminal end side of the sorting barrel 24.
6... are disposed, and the paddy containing some uncollected brown rice reaching the terminal end of the sorting cylinder 24 is transferred to the receiving trough 37. Reduction 4i! 38 and then returned to the supply funnel 4.

FIG. 4 shows a control block diagram for controlling the control motor 9. As shown in FIG. Of these, 39 are microcomputer arithmetic control units (hereinafter referred to as CPUs) equipped with memory for storing various control programs and necessary data.

At least theory! 70- Motor 4 that drives and rotates the wheels 2 and 3
Detection information from the current transformer 41 that detects the load current of 0, detection parent rate information from the parent rate sensor 42 that detects the parent rate of the rolled rice, etc. are input, while the gap between the master rolls 2 and 3 is "open". ” to “close” output signals, ie, forward rotation to reverse rotation command signals of the control motor 9, etc. Further, the CPU 39 uses a built-in timer function to perform timekeeping operations according to the control program.

In addition, 43 is the control motor 9 that rotates normally (the gap between the master rolls 2 and 3).
Relay 44 is for control motor 9 reverse rotation (same gap
This is a relay for "closed" side).

The CPU 39 mainly has the following functions. That is, after confirming the contact state of the rolls 2 and 3 by comparing the load current when the parent rolls 2 and 3 are in contact with the load current when they are not in contact, a roll gap ``open'' signal is output for a predetermined period of time. roll initial gap setting means).

■During the parent work, the detected parent rate from the silicon removal rate sensor 42 is compared with the preset parent rate set in advance with the parent rate setting dial 47, and if the detected parent rate is high, the parent roll gap is set to ``open''.
A signal is output, and, conversely, when the detected parent parent rate is low, a parent roll gap [closed] signal is output. During the parent rate control, load current A1 detection information of the motor 40 is input, and it is determined whether the current is higher than the set current value A (overload state). (2) If the load current value A1 is lower than A8, the parent rate control is continued; if it is higher, the parent rate control stop signal is output. During the operation of ■■, when the parent rate control stop signal is output, a ``T roll r open'' signal is output for a predetermined period of time, etc.

The action of the upper side will be explained.

When the start switch 48 is turned on, the motor 40 is started and the various rotating parts are driven. Further, the gap between the master rolls 2 and 3 is initially set, and when the shutter 15 is opened to start work, the roll gap is first controlled by load current control. That is, motor 4o
The parent roll gap is controlled to "open" and "close" so that the load current becomes a preset load current value.Next, when the sample grains to the parent ratio sensor 42 reach a predetermined value and the parent roll ratio becomes ready to be calculated, the master roll gap is opened and closed. ■Shift to rate control. This control rate control is to control the gap between the parent rolls to "open" and "close" in the same way as the load control described above so that the parent rate is set in advance with the setting dial 47, and this state continues during the hulling operation. .

The mixed rice that has passed between the removal rolls 2 and 3 is subjected to wind selection, and then is supplied to the rotary sorting section 23 via the mixed rice guide tube 29 and the mixed rice transfer gutter 25.

The sorting barrel rotates and scoops up the mixed rice through the pot holes 24a, 24a..., and the brown rice is collected into the finishing rice gutter 26 after exceeding the finishing control valve 3 degrees, and the long grain rice has a high center of gravity and is relatively low. At this point, it falls out of the pot hole and returns to the mixed rice layer. Sorting cylinder 24
The above sorting is repeated from the starting end to the terminal end to separate paddy and brown rice. In addition, for brown rice, use 32. Brown rice gutter 33. The finished rice is taken out of the machine through a thrower 35, etc.

In addition, the paddy remaining at the end of the sorting cylinder 24 (including some brown rice) is
The grains are scooped out by the grain-lifting blades 36, 36, and returned to the four supply funnels, where they are again subjected to the parent's selection process.

During the above-mentioned parent work, the load current of the motor 40 is detected by the current transformer 41 in parallel with the parent rate detection by the parent rate sensor 42. Therefore, the motor 4o load current increases in response to the roll "close" signal from the parent rate control, but the rated load value 1
For example, when the overload current value At (for example, 10 amperes) is reached for 8 amperes, the parent rate control state is stopped and the output of the roll [closed] signal is immediately stopped. Furthermore, if mechanical load current increase factors such as a drop in power supply voltage and an increase in the amount of paddy supplied act in a superimposed manner, the overload current value may exceed A2. is output to ensure the safety of roll 2.3.

[Brief explanation of drawings]

The figures show one embodiment of the present invention, in which Fig. 1 is a sectional view of the main part, Fig. 2 is a side sectional view of the whole, Fig. 3 is a back sectional view thereof, Fig. 4 is a control block diagram, and Fig. 4 is a control block diagram. Figure 5 is a flow diagram. In the figure, 2 and 3 are culling rolls, 4 is a supply funnel, 9 is a control motor, 23 is a rotary sorting section, 24 is a sorting cylinder, and 39 is a CPU.
, 40 is a drive motor, 41 is a current transformer, 42 is a parent rate sensor, and 47 is a withdrawal rate setting dial. Representative Power” I Father 1 Chang Lao Cao 5 Illustrations

Claims (1)

[Claims] The gap between the dehulling rolls in the hulling device, which performs dehulling while supplying paddy between a pair of dehulling rolls 2 and 3, is opened and closed so that the detected dehulling rate becomes the set dehulling rate. In the control device for the removal rate, when the detected load current value A_1 based on the load detection means of the removal roll drive motor 40 exceeds a constant overload current value A_2 which is higher than this, the current roll "close" output is stopped. A release roll gap control device characterized in that it controls and outputs a roll "open" output for a predetermined time T or a predetermined gap.