JPS646916Y2 - - Google Patents

Description

[Detailed description of the invention] The invention includes a hulling section having a pair of derolling parts,
The present invention relates to a hulling machine including a release adjustment member that adjusts the hulling gap of the roll removal.

Generally, the scraped rice taken out from the hulling section is sorted and separated into brown rice and paddy, but at this time, the mixed rice is taken out and returned to the hulling section, so at the start of work, the amount of returned mixed rice is small. If the hulling gap for derolling was adjusted based on the set value, the actual dehulling rate would be higher than the set value, and there was a risk that brown rice would be damaged. Therefore, conventionally, the hulling gap was manually adjusted until the returned mixed rice was circulated, making it difficult to fully automate the de-adjustment.

The present invention solves the above-mentioned conventional drawbacks, and provides a hulling machine equipped with a hulling section having a pair of derolling units, and a deadjustment member that adjusts the hulling gap between the derolling units. Initial setting means for outputting an initial standard value with a lowered omission rate than a set value at the start of automatic control by the member, and work setting for outputting the set omission rate as a work reference value after a predetermined time has elapsed after the start of automatic control. This system enables the hulling operation to be carried out at a lower shedding rate than the set value only during a certain period of time after the start of the work, and it is possible to temporarily lower the shedding rate to a state where the rice is turned and mixed again at the start of hulling. Compared to the conventional method, there is no need to combine manual and automatic control, and it is possible to easily fully automate the decontrol, and the switching time of the standard value of decomposition rate can be changed depending on the time the sorted turned mixed rice returns to the hulling section. is determined, so by increasing the reference value of the shedding rate step by step after the start of hulling, the actual shedding rate of the scraped rice can be obtained at the initial stage of hulling at a roughly set state, and it is possible to change from manual adjustment to automatic adjustment. It is an object of the present invention to provide a decontrol device for a huller that eliminates the need to judge the timing of transition and enables safe hulling work.

Embodiments of the present invention will be described in detail below based on the drawings. FIG. 1 is an overall view of the rice huller, and FIG. 2 is a cross-sectional view of the same. In the figure, 1 is a hulling section, 2 is a hopper into which paddy is thrown, 3 and 4 are a pair of unrollers installed opposite to each other at the lower part of the hopper 2, 5 is a shutter for opening and closing the lower part of the hopper 2, and 6 is each of the above-mentioned A deployment lever 7 for manually opening the rolls 3 and 4 in an emergency manner is a release cylinder that is a release member for adjusting the gap between the rolls 3 and 4.

8 in the figure is a winnowing section on which the hulling section 1 is placed, which includes a brown rice take-out gutter 9, a brown rice conveyor 10, and a winnower 11 for removing small rice from the brown rice falling into the gutter 9.
and a small rice take-out gutter 12 that carries the small rice out of the machine.
and a rice conveyor 13, a grain scattering plate 14, and a grain flow board 15, and a grain rice take-out gutter 16 that faces below the rolls 3 and 4 and receives grain rice (brown rice and paddy), and grain rice removal gutter 16 that receives grain rice (brown rice and paddy). It is provided with a conveyor 17, a rice cake take-out gutter 18 and a rice cake conveyor 19 that receive the rice cake separated from the rice that has been rubbed off, and a dust suction and exhaust fan 20 that discharges the rice husks that have been separated from the rice that has been rubbed off to the outside of the machine.

In the figure, reference numeral 21 denotes a sorting section mounted on the wind sorting section 8 and installed in parallel with the hulling section 1. Upper and lower sorting tubes 22 and 2 rotate continuously in one direction to separate brown rice and paddy.
3, support rolls 24, 25, and 25 for rotatably supporting each of the cylinders 22 and 23, and an upper sorting cylinder 2.
a mixed rice supply tank 26 provided outside one end of 2;
A supply conveyor 27, a re-sorting grain conveyor 28, and a brown rice receiving conveyor 29 inserted into the upper sorting cylinder 22,
Brown rice receiving conveyor 30 inserted into the lower sorting cylinder 23
, a rice sorter 31 that is installed between the upper and lower brown rice receiving conveyors 29 and 30 and connects them in series, a chute 32 that communicates the paddy discharge end of the upper sorting cylinder 22 with the hopper 2, and a lower sorting machine that connects the re-sorting grain conveyor 28 to the hopper 2. Cylinder 23
A chute 33 that connects the mixed rice discharge end of the lower sorting cylinder 23 to the rice take-out gutter 16 by sliding it down, and a chute 35 that connects the brown rice receiving conveyor 30 to the brown rice take-out gutter 9.

A brown rice lifting conveyor 36 whose lower end communicates with the brown rice conveyor 10 and a sorting rice lifting conveyor 37, which is a grain frying machine whose lower end communicates with the scraped rice conveyor 17, are placed along the outside of the machine. It is installed vertically and communicates the upper end of the sorted rice lifting conveyor 37 with the supply tank 26. A hulling motor 38 is installed at the corner of the wind sorting section 8, and each section 1, 8, 21 is connected to the upper end of the sorted rice lifting conveyor 37. It is driven by a motor 38 to continuously perform hulling and sorting, and to continuously take out brown rice.

The conveyor also includes a removal sensor 39 that detects the removal rate (mixing ratio of brown rice and paddy) based on the falling weight of the rice scraped from the hulling unit 1 into which the returned mixed rice from the sorting unit 21 is mixed. The sensor 39 is fixedly installed on one side of the inside of the tank 26, which is the dropped rice discharging section 40 of 37. As shown in FIG. 3, there is a grain outlet 41 through which the scraped rice (including returned mixed rice) discharged from the conveyor 37 is continuously dropped in a fixed amount, and a grain flow receiving inlet 42 having a larger area than this. an inverted quadrangular pyramid-shaped container 43 for measuring the falling weight, a sensing shaft 45 rotatably supported on a bracket 44 in the middle, and a sensing shaft 45 fixed to one end of the shaft 45 and located approximately directly below the outlet 41. a weight 47 that is screwed onto the other end of the shaft 45; vertical stoppers 48 and 49 that restrict the rotation of the shaft 45 and swing it up and down; The upper and lower switches 50 and 51, which operate on and off in conjunction with the motion, constitute the desensor 39, and open the receiving port 42 on the inlet side of the container 43 opposite to the direction in which the rice is thrown out by the conveyor 37. Then, while the inside of the container 43 is always filled with scraped rice, the scraped rice is constantly dropped in a fixed amount from the outlet 41 onto the upper surface of the receiving plate 46. It is configured to electrically convert the vibration into a pulse signal.

As shown in FIG. 4, a bracket 52 is attached to the hulling section 1.
The derolling cylinder 7 is installed through the transmission gears 53, 54, 55, 5 and
6 to connect and drive one roll 3 toward and away from the other roll 4 to create a hulling gap 57.
A gap adjustment link 58 is provided to change the ratio, and the piston rod 7a of the cylinder 7 is connected to the link 58, and the hulling gap 57 is expanded and contracted by controlling the cylinder 7 to adjust the shedding rate. ing.

FIG. 5 is a diagram of an escape ratio adjustment circuit, in which a pulse period calculation circuit 60 is connected to the upper and lower switches 50, 51 of the escape sensor 39 via a flip-flop circuit 59.
The switch 5 increases or decreases in proportion to a change in the falling weight of the scraped rice falling onto the receiving plate 46.
The on-off switching operation of 0 and 51 is converted into this on-off switching time and detected as a periodic change of the pulse signal.

In addition, the hulling gap 57 of the above-mentioned derolling 3, 4 is
A manual setting device 61 that sets the escape rate to a work reference value during automatic control, and an initial setting device that is an initial setting means that outputs an initial reference value with the escape rate lower than the work reference value when automatic control by the removal cylinder 7 starts. A circuit 62, a work setting circuit 63 which is a work setting means that outputs the set evasion rate as a work reference value after a set time has elapsed after the start of the automatic control, and an initial setting circuit 62 that is activated at the same time as the start of the automatic control. It is equipped with a timer 64 that activates a work setting circuit 63 after a certain period of time, and when adjusting the removal rate by automatic control, the removal rate is lowered at the start of work until the scraped rice circulates and returns to the hopper 2. While adjusting the hulling gap 57 based on the initial reference value, the sorting section 21
After transitioning to the continuous work state where the returned mixed rice returns to the hopper 2, the hulling gap 57 is adjusted based on the work standard value.
configured to adjust.

Furthermore, the arithmetic circuit 60 and each setting circuit 6
2 and 63 are connected as inputs to the control circuit 64, and the control circuit 64 is connected to the control circuit 64 through enlargement and reduction circuits 65 and 66, and the control circuit 64 is connected to the control circuit 67, respectively. . Then, through the brightness regulators 68, 69, 70, light emitting diodes 71,
72 and 73 are connected to the display circuit 67, and the resistance values of the regulators 68 to 70 are made different so that other diodes 7
The brightness of 1,73 is increased.

FIG. 6 is an explanatory diagram of the operation of the shedding control circuit 64, which includes an automatic circuit 74 that confirms whether the shedding rate is adjusted manually or automatically, and an automatic circuit 74 that confirms whether the shedding rate is adjusted manually or automatically, and a manual setting device 61 that adjusts the hulling gap 57. A gap setting circuit 75 for inputting the work reference value and a timer 6 at the start of hulling.
4, an initial gap circuit 76 that inputs the initial reference value of the initial setting circuit 62 operated through the initial gap circuit 76, a deadjustment circuit 77 that operates the dehulling cylinder 7 based on the initial reference value, and a deadjustment circuit 77 that operates the hulling motor 38. A sliding start circuit 78 and a work gap circuit for inputting the work reference value of the work setting circuit 63 which is activated via the timer 64 after the time required for the returned mixed rice from the sorting section 21 to return to the hopper 2 has elapsed. 79
and a de-adjustment circuit 80 that operates the de-removal cylinder 7 based on the work reference value, and reduces the de-removal rate from the set value until the mixed rice is returned from the sorting section 21 to the hopper 2 at the start of hulling work. The hulling gap 57 is automatically adjusted based on the initial reference value, eliminating the need for manual adjustment at the initial stage of the operation, and preventing the actual removal rate of rice that has been removed from becoming higher than the setting.

In addition, in the control circuit 64, a manual switch circuit 81 for confirming manual operation of the de-cylinder 7
and a de-adjustment circuit 82 that operates the de-adjustment cylinder 7 by manual adjustment, and manually adjusts the hulling gap 57. Incidentally, as shown in FIG. 2, a limit switch 83 for detecting the returned mixed rice from the upper sorting cylinder 22 may be provided inside the chute 32, and each setting circuit 62, 63 may be switched by the switch 83 in the same way as the timer 64. It's easy to do.

As is clear from the above embodiments, the present invention includes a hulling section 1 having a pair of derolling parts 3 and 4, and a de-adjusting member such as a dehulling cylinder 7 for adjusting the dehulling gap 57 between the derolling parts 3 and 4. In the rice hulling machine, an initial setting means such as an initial setting circuit 62 that outputs an initial reference value with a lower shedding rate than a set value at the time of starting automatic control by the deadjustment member 7;
A work setting means such as a work setting circuit 63 that outputs the set removal rate as a work reference value after a predetermined time has elapsed after the start of the automatic control is provided, and the paddy is harvested with a lower removal rate than the setting only within a certain period of time after the start of the work. This enables the shedding operation to be carried out, and it is possible to temporarily lower the shedding rate to a state where the turned and mixed rice is re-shelled at the start of hulling, and compared to conventional methods, there is no need to combine manual and automatic control, and it is possible to improve the shedding control. Full automation can be achieved easily, and the switching time of the reference value of the removal rate is determined by the time the sorted returned mixed rice returns to the hulling section, so the removal rate can be changed in stages after the start of hulling. By increasing the standard value, the actual shedding rate of the rice that has been removed can be obtained at the initial stage of hulling, with the approximate setting.
This system has remarkable effects such as being extremely practical and allowing the hulling operation to be carried out safely without the need to judge when to shift from manual adjustment to automatic adjustment.

[Brief explanation of the drawing]

Fig. 1 is an overall view of a rice huller showing an embodiment of the present invention, Fig. 2 is a sectional view thereof, Fig. 3 is a partially enlarged sectional view, Fig. 4 is an explanatory view of the unrolling section, and Fig. 5 6 is a diagram illustrating the escape rate adjustment circuit, and FIG. 6 is an explanatory diagram of the operation of the escape rate control circuit. 1... Husking section, 3, 4... De-rolling, 7...
Removal cylinder (removal adjustment member), 57... Husking gap, 62... Initial setting circuit (initial setting means), 6
3... Work setting circuit (work setting means).

Claims (1)

[Scope of utility model registration request] In a hulling machine equipped with a hulling section having a pair of hulling units, and a de-adjustment member that adjusts the hulling gap between the de-rolls, the dehulling ratio is lowered from a set value at the start of automatic control by the de-adjustment member. and a work setting means that outputs the set evasion rate as a work standard value after a predetermined period of time has elapsed after the start of the automatic control. A dehulling control device for a rice hulling machine is characterized in that it enables hulling work by lowering the dehulling rate.