JPS6224128B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in an automatic control device for de-machine removal.

By keeping the load on the main electric motor that drives derolling safely at all times, and by providing a final stage to remove a small amount of paddy flowing down at the end of derolling, we aim to improve derolling capacity and brown rice quality. The aim is to develop and provide equipment for accident prevention and labor saving.

To explain the present invention with reference to an embodiment diagram, FIG. 1 shows that the raw material paddy put into the supply port 2 of the dechambering 1 is hulled between the dechambering rolls 3 and 4 of the dechambering 1, and the removed material is removed. The rice husk is air sorted in the rice husk wind sorting chamber 5 and the paddy is discharged outside the machine, and the mixed grains of different kinds are supplied to the swinging sorting board 7 through the grain lifting machine 6. Then, the grains on the board surface are sorted by the oscillating sorting action that vibrates diagonally up and down on the sorting board, which flows the brown rice to the higher side of the sorting board surface, the unhulled rice to the lower side, and the mixed grains of brown rice and paddy rice to the middle part. It flows and drifts toward the sorted grain outlet side in a direction almost perpendicular to the swinging direction, and the brown rice goes into the brown rice passage 8 provided on the outlet side, and the mixed grains of brown rice and husk go into the mixed grain passage 9 of brown rice and paddy rice. Further, the unhulled rice flows down to the unhulled rice passage 10, respectively. Then, the mixed grains of brown rice and paddy are returned to the mixed grain receiving gutter of the rice husk sorting room 5 via the circulation circuit 11, and the brown rice is fried to a predetermined height via the rice-lifting discharge path 12 and removed from the machine. This is a hull removing and sorting device that is configured so that the unhulled rice is returned to the return channel 14 provided in the supply port 2 via the paddy discharge channel 13 and removed again.

Next, when removing the machine as shown in Fig. 2, the fixed rotating main shaft 1
5 and a moving rotation sub-shaft 16, rubber de-rolls 3 and 4 are mounted parallel to each other, and the sub-shaft 16 always maintains parallel to the main shaft 15 and moves near and far, using the base shaft 17 as a fulcrum. A rod 19, which is mounted on a bearing provided on an arm rod 18 that rotates as a rotor, and which is engaged with a force point at the tip of the arm rod 18, is supported on the fuselage with a spiral spring 20 interposed therebetween. By rotating the female screw 22 screwed into the screw 21 in both forward and reverse directions, the subshaft 16 together with the arm rod 18 is moved near and far from the main shaft 15, and the female screw 22 is used as the sprocket 23 to create an adjustable reversible rotary electric motor 24. sprocket 25
and are connected by a chain. A flow path 26 and a return flow path 14 are provided in parallel at the supply port 2 for supplying paddy to the unrolled rice 3 and 4, an on-off valve 27 is provided in the flow path 26, and a diode 28 is provided above the on-off valve 27. A small sensor, which is a grain level meter 30, is installed in a block with a light receiving element 29 that detects the reflected light rays reflected by the rice grains, and the sensor is operated between the light emitting diode 31 and the light receiving element 32. The opening/closing signal circuit of the on-off valve 27 which signals opening/closing by doing so is connected to the AND circuit (logic circuit) 33 shown in FIG. A small sensor is installed in the form of a grain level meter 36 in which a light receiving element 35 for detecting the reflected light beam is set in a block, and the grain level meter 36 and the AND circuit 3 are connected to each other.
3 to the main shaft 1 of the derolling 3 via the OR circuit 37.
5, and is connected to a control circuit 40 connected to a current transformer 39 provided in the main circuit of a main motor 38 connected to An adjustment reversible rotary motor 24 is connected to the output side of the motor. In addition,
The control circuit 40 includes an integrator 43 and comparators 44, 4.
5, 46, AND circuits 47, 48, 49, etc., the details of which will be described later with reference to the electrical circuit diagram of FIG.

To explain the electric circuit in FIG. 3 in detail, a magnetic contactor contact MC is interposed in the main circuit connecting power terminals R, S, and T and the main motor 38, and the contact point MC is inserted between the terminals R and S. The electromagnetic coil MC and button switches S and T are connected in series, and the terminal T
A current transformer 39 is provided in the circuit, and a control circuit 40 is connected to the output side of the current transformer 39. The control circuit 40 connects the input side of an integrator 43 to the output side of the current transformer 39, interposes a rectifier 50 and an excessive input protector 51 between them, and connects the output side of the integrator 48 to three circuits. The circuits are connected to one input terminal of the comparators 45 and 46, and the upper limit value setting unit 52 is connected to the other input terminal of the comparator 44, and the upper limit value setting unit 52 is connected to the other input terminal of the comparator 45. The trace value setting section 53 is connected to the comparator 46, and the lower limit value setting section 54 is connected to the comparator 46.
One terminal on the input side of the circuit 47 is connected to the output side of the comparator 44, one terminal on the input side of the OR circuit 56 is connected to the output side of the circuit 47, and one terminal on the input side of the AND circuit 48 is connected to the output side of the comparator 45. At the same time, the other input terminal of the OR circuit 56 is connected to the output side of the circuit 48, and the output side of the comparator 46 is connected to one input terminal of the AND circuit 49. Also AND
The output side of the OR circuit 37 is connected to the other input terminals of the circuits 47 and 49, respectively, and the AND circuit 4
The other terminal on the input side of 8 is connected via an inverter 55.
Connected to the output side of the OR circuit 37, and connected to the output side of the OR circuit 56.
The output side of the AND circuit 49 is connected to the reversible rotary motor 24 for adjustment, and a relay 41 for forward rotation is provided therebetween, and the output side of the AND circuit 49 is connected to the reversible rotary motor 24 for adjustment, and a relay 42 for reverse rotation is provided therebetween. be.
Further, the output side of the AND circuit 33 is connected to one input side terminal of the OR circuit 37, and the light receiving element 35 of the return channel 14 is connected to one input side terminal of the circuit 37. On-off valve 27 at the terminal
The light receiving element 32 of the grain level meter 30 is connected to the other input terminal of the circuit 33.
is connected.

Therefore, if the gap between the derolls 3 and 4 becomes narrow during decoupling, and the load current of the main motor 38 exceeds the set value (temporarily 8A) of the upper limit value setting section 52, the Then, a signal is generated from the OR circuit 56 and the motor 24 is rotated forward through the signal relay 41 to widen the roll interval, and as the interval increases, the load current changes to the setting value of the lower limit value setting section (temporarily). 7A), a signal is generated from the AND circuit 49, which reverses the motor 24 through the relay 42 to narrow the roll interval, thereby safely unloading the main motor that drives the unrolling at all times. It will be kept at. Then, at the end of the above-mentioned dehulling, the amount of paddy at the supply port 2 provided in the dehulling machine decreases, the detection signal from the light receiving element 29 of the grain level meter 30 disappears, and the return flow path 14 side The amount of returned paddy gradually decreases, and a small amount of paddy flows down the mouth and there is no accumulated paddy at the grain level meter 36 position, so the detection signal of the light receiving element 35 provided in the channel disappears over time, and these The extinction signal interrupts the output signals of AND circuits 47 and 49, and
It is input to the circuit 48 and generates a matching signal corresponding to the set value (temporarily 4.5 A) of the minute value setting section 53, and this signal causes the motor 24 to rotate slightly in the forward direction, as shown in FIG. By moving the arm rod 18 back and forth via the rod 19, the unrolling gap can be adjusted to the opening degree of the final stroke. Adjustable reversible rotary motor 2
4, an induction motor, a servo motor, a pulse motor, etc. are used.

Conventionally, there was no idea to automatically adjust the gap between the derolls and load stability according to load fluctuations in the demachining process, and in a system that presses both rolls infinitely using a constant pressure of fluid, it is difficult to control the amount of paddy supplied. Since the rolls are always in contact with each other under a constant total pressure, in the case of a small amount of paddy, the paddy is damaged and the rolls come into direct contact with a portion of the paddy, resulting in unnecessary wear and tear.

The present invention has a stable load on the small amount of grains flowing down from the return channel, regardless of changes in the amount of paddy supplied, and enables easy and safe shedding at a stable shedding rate, thereby eliminating brown rice. It not only protects and prevents accidents, but also increases the number of rolls, significantly increases work efficiency, and has great labor-saving effects through automatic control.

In addition, both gas and liquid are used in the fluid compression device of the movement adjustment device for the moving and rotating sub-shaft of the present invention, and the sub-shaft is moved along the guide rail without depending on the rotation of the arm rod. In some cases. In some cases, a reversible rotating electric motor for adjustment is directly connected to the screw for rotation.

[Brief explanation of the drawing]

The drawings are examples of the present invention, in which Fig. 1 is a side view of the hulling and sorting device, Fig. 2 is a side sectional view of the dehulling machine,
FIG. 3 is its electrical circuit diagram. 1... Breaking the room, 2... Supply port section, 3... Breaking the roll, 4... Breaking the roll, 5... Rice husk sorting chamber, 6
... Grain frying machine, 7 ... Oscillating sorting board, 8 ... Brown rice passage, 9 ... Brown rice and paddy rice mixed grain passage, 10 ... Paddy rice passage, 11 ... Circulation circuit, 12 ... Fried rice discharge path, 1
3...Paddy discharge path, 14...Return channel, 15...Fixed rotating main shaft, 16...Moveable rotating sub-shaft, 17... Base shaft, 18... Arm rod, 19... Rod, 20... Spiral spring , 21...Male screw, 22...Female screw, 23
... Sprocket, 24 ... Reversible rotating electric motor for adjustment, 25 ... Sprocket, 26 ... Flow path, 2
7... Opening/closing valve, 28... Diode, 29... Light receiving element, 30... Grain level meter, 31... Diode, 32... Light receiving element, 33... AND circuit,
34...diode, 35...light receiving element, 36...
Grain level meter, 37... OR circuit, 38... Main motor, 39... Current transformer, 40... Control circuit, 41
...Relay, 42...Relay, 43...Integrator,
44... Comparator, 45... Comparator, 46... Comparator, 47... AND circuit, 48... AND circuit, 4
9...AND circuit, 50... Rectifier, 51... Excessive input protector, 52... Upper limit value setting section, 53...
Trace value setting section, 54... Lower limit value setting section, 55...
Inverter, 56...OR circuit.

Claims (1)

[Claims] 1. The mixed grains of paddy and brown rice flowing down the rice husk wind sorting chamber provided below the de-rolling chamber in which de-rolling is mounted on the fixed rotating main shaft and the movable rotating sub-shaft are supplied to the oscillating sorting board through the grain lifting machine, In a circulation circuit that connects a paddy discharge path provided on one side of the sorting board to a return flow path that transfers the paddy to the supply port of the de-rolling, the secondary shaft is connected to the load of the main motor that drives the de-rolling. A circuit of a drive conversion device of a movement adjustment section of the sub-shaft that moves near and far with respect to the main shaft and maintains the load of the de-rolling at an appropriate level, a circuit of the main motor, and a return flow path of the de-rolling supply port. An automatic control device for threshing, comprising: a control circuit connected to a grain detector circuit, and a final step circuit for removing a small amount of paddy flowing down the supply port.