JPH0346837Y2 - - Google Patents

Description

[Detailed explanation of the idea]

``Industrial Application Field'' The present invention relates to a removal rate detection device for detecting the removal rate of mixed rice that has been de-rolled. ``Prior art'' Conventionally, the method for detecting such evasion rate is to detect the falling impact force, that is, the flowing flow rate, of the mixed rice that is allowed to flow down a fixed amount, and to detect the evasion rate based on the change in this falling impact force. There is. ``Problem that the invention aims to solve'' However, when detecting the shedding rate using the falling impact force of such mixed rice, the impact force varies depending on the variety, so it is difficult to always accurately determine the shedding rate. There was a drawback that it was difficult to detect. ``Means for Solving the Problems'' Therefore, the present invention includes an impact sensor that detects the falling impact force of the mixed rice after deprocessing, and
The apparatus is equipped with a sensor amplitude detection circuit that detects the amplitude of the output value of the sensor, and is configured to know changes in the shedding rate of mixed rice based on changes in the amplitude of the output value of the sensor. "Effect" According to the present invention, there is no difference in the amplitude change of the falling impact force value of the mixed rice measured by the sensor among the varieties, and the larger the amplitude, the lower the escape rate and the smaller the amplitude. It was devised with the focus on the fact that the shedding rate increases, and it is possible to always accurately detect the shedding rate without being affected by variations in variety. "Embodiment" An embodiment of the present invention will be described below in detail based on the drawings. Fig. 1 is a decontrol circuit diagram of the main part, Fig. 2 is an overall external view, and Fig. 3 is a cross-sectional view of the same. 4 is a pair of derollers installed oppositely at the bottom of the hopper 2; 5
6 is a shutter that opens and closes the lower part of the hopper 2; 6 is a deployment lever that manually opens each of the rolls 3 and 4 in an emergency; 7 is a step drive type motor that adjusts the removal ratio to adjust the gap between the rolls 3 and 4; This is the motor 7. 8 in the figure is a winnowing section on which the huller 1 is mounted, 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. Reference numeral 21 in the figure is a sorting section mounted on the wind sorting section 8 and installed in parallel with the huller 1, and as shown in FIG. 4, the upper and lower parts rotate continuously in one direction to separate brown rice and paddy. Sorting tubes 22, 23 and support rolls 24...25 that rotatably support the tubes 22, 23, respectively.
..., a mixed rice supply tank 26 provided outside one end of the upper sorting tube 22, a supply conveyor 27, a re-sorting grain conveyor 28, and a brown rice receiving conveyor 29 inserted into the upper sorting tube 22, and a rice receiving conveyor 29 inserted into the lower sorting tube 23. Brown rice receiving conveyor 30 and upper and lower brown rice receiving conveyors 2
A rice sorting machine 31 is installed between 9 and 30 and connected in series, and a rice sorting machine 31 is connected to the hopper 2 at the rice discharging end of the upper sorting tube 22.
a chute 32 that communicates with the reselection conveyor 2
8 to the lower sorting cylinder 23
, a chute 34 that slides down the mixed rice discharge end of the lower sorting cylinder 23 and connects it to the rice take-out gutter 16, 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 side communicates with the brown rice conveyor 10, and a sorting rice lifting conveyor 37 whose lower end side communicates with the scraped rice conveyor 17 are erected along the outside of the machine, The upper end of the sorted rice lifting conveyor 37 is communicated with the supply tank 26 through a connecting pipe 38,
The upper end of a bypass pipe 39 is connected to the connection pipe 38, and the upper end of a bypass pipe 39 is connected to the connecting pipe 38, and the bypass pipe 39 is a bypass path that separates the rice scraped from the huller 1 and the returned mixed rice from the sorting section 21 to flow to the sorting section 21. The lower end of the bypass pipe 39 is connected to the joint 40 between the conveyor 17 and the lifting conveyor 37, and each conveyor 36, 3
As in 7, install the bypass pipe 39 along the outside of the machine. 5 to 7 are enlarged sectional views of the bypass pipe 39, in which a container 41 for measuring the downstream flow rate, which is a hopper for detecting evasion rate, is installed inside the bypass pipe 39, and an overflow gutter 42 is provided on one side of the container 41. The container 41 is always filled with mixed rice, and excess mixed rice leaks into the overflow gutter 42 from the upper edge of the container 41, and a mixed rice outlet is provided at the bottom of the container 41. 43 is opened, and it is configured to continuously drop a certain amount of mixed rice. Further, a sensing shaft 45 is rotatably supported on the bypass pipe 39 below the container 41 via a bracket 44, and a sensor arm 46 has one end fixed in the middle of the shaft 45, and a mixed rice receiving plate 4 is attached to the other end.
7 is fixed, and the receiving plate 4 is mounted using the shaft 45 as a fulcrum.
7 is supported so that it can be raised and lowered, and the receiver 47
is tilted in the left-right direction substantially perpendicular to the vertical swing direction, and the receiver 47 is positioned substantially directly below the outlet 43. One end of the sensing shaft 45 is interlocked and connected to a potentiometer 49 fixedly supported by a bracket 48, and a weight arm 50 is provided horizontally in the opposite direction to the sensor arm 46, and a weight arm 51 is suspended vertically. are fixed to the ends of the sensing shaft 45, respectively. Further, a weight 52, which is a balance member that provides a counterbalancing force in the opposite direction to the force acting on the receiver 47, is attached to at least one of each weight arm 50, 51, and the mixed rice falling from the outlet 43 is brought into contact with the receiver 47. Each member including the receiving plate 47 and the potentiometer 49 forms an ejection rate sensor 53 which is an impact sensor, and the relative force between the falling impact force, which is the flowing amount of the mixed rice, and the force of the weight 52 is determined. The sensor arm 46 and the sensing shaft 45 are rotated by the change in balance, and the flow rate of the mixed rice falling from the outlet 43 is detected via a potentiometer 49. In other words, the flow rate flowing down from the outlet 43 is smaller as the amount of paddy mixed in the mixed rice increases, and therefore, under the condition where the removal rate of the mixed rice flowing down to the receiving 47 is lower than the standard removal rate, the fifth In the figure, the sensor arm 46 rotates counterclockwise around the sensing shaft 45, and the potentiometer 49 detects this change in rotation, thereby detecting a decrease in the escape rate. As shown in Figure 8,
The level output value of the potentiometer 49 becomes smaller as the escape rate decreases, and the amplitude E of this level output value increases as the escape rate decreases. FIG. 1 is an escape control circuit diagram based on the above relationship, in which a reference level setter 54 for setting a reference level output value of the potentiometer 49 corresponding to the reference escape ratio is connected to a level comparator 55, and the reference level setter 54 is connected to the level comparator 55. The escape rate sensor 53 is connected to the level comparator 55 via an amplifier 56, and the comparator 55 is provided to compare the level outputs of the setter 54 and the sensor 53. Further, a reference amplitude setter 57 sets a reference amplitude E of the output value of the potentiometer 49 corresponding to the reference escape rate.
is connected to the amplitude comparator 58, and the eclipse rate sensor 53 is connected to the amplitude comparator 58 via an amplifier 56 and an amplitude detection circuit 59, so that the amplitude outputs of the setter 57 and the sensor 53 are compared. and each comparator 5
5 and 58 are connected to a release control circuit 60, and the control circuit 60 is connected to the release motor 7, which variably adjusts the gap C between the rolls 3 and 4, via roll opening/closing circuits 61 and 62.
The motor 7 is appropriately driven in forward and reverse directions based on the detection level and its amplitude output to control the roll gap at a constant level. The present embodiment is constructed as described above, and during work, the gap C between the rolls 3 and 4 is adjusted based on the detected value of the roll removal rate sensor 53. Opening/closing control of the rolls 3 and 4 is performed as shown in the chart below based on both output values of the level and its amplitude.

[Table] That is, when the level V based on the detection output of the sensor 53 is smaller than the reference and its amplitude E is larger than the reference, the rolls 3 and 4 are moved to close, while when the level V is larger than the reference and the amplitude E is larger than the reference. When it is smaller than the standard, the rolls 3 and 4 are opened, and the gap between the rolls 3 and 4 is determined based on two factors: the detection level of the sensor 53 and its amplitude, so that control is performed reliably without malfunction. Further, by combining these levels and amplitudes, it is possible to easily identify immature rice. FIG. 9 is a decontrol circuit diagram in another embodiment,
FIG. 10 is a flowchart of the same, in which a main switch 65 applies a power supply 64 to each part of a decontrol circuit 63 including a sensor amplitude detection circuit configured by a microcomputer, and a main switch 65 that applies a power supply 64 to each part, and
An automatic switch 66 for switching to automatic adjustment and a reference amplitude setter 67 for setting a reference amplitude value of the output of the potentiometer 52 are connected to the control circuit 63. In addition, the drive circuit 6 drives the motor 7.
8 to the control circuit 63, and a manual regulator 69 for manually rotating the motor 7 in forward and reverse directions is connected to the control circuit 63. Now, when the operation of the control circuit 63 is started by turning on the main switch 65, the reference adjustment of the output amplitude E of the potentiometer 52 is performed, and the reference amplitude E corresponding to the reference escape rate is adjusted. The gap C is adjusted by opening and closing the rolls 3 and 4 via the motor 7. The output level in the reference amplitude E state is stored in the control circuit 63 as a reference level value, and thereafter the roll gap C is controlled via the demotor 7 to maintain this reference level. In this configuration, even if there is a difference in output between the products, by adjusting and setting the output to the standard amplitude in advance (amplitude is approximately the same for each product), the standard level of each product that corresponds to the standard ejection rate can be adjusted. Each reference level is automatically adjusted, and control is performed based on this reference level value. Therefore, it is no longer necessary to reset the standard level value each time depending on the type of product as in the past. Annoyances can be eliminated. "Effects of the Invention" As is clear from the above embodiments, the present invention includes an impact sensor 53 that detects the falling impact force of the mixed rice after deprocessing, and also detects the amplitude E of the output value of the sensor 53. Sensor amplitude detection circuit 59, 6
3, and detects changes in the shedding rate of mixed rice based on increases and decreases in the output amplitude value of the sensor 53.
Even if the level output values of be effective.

[Brief explanation of the drawing]

Figure 1 is an electrical circuit diagram of the main parts, Figure 2 is an explanatory diagram of the overall appearance, Figure 3 is a sectional view of the same, Figure 4 is an enlarged sectional view of the same, and Figures 5 to 7 are the evasion rate sensor section. FIG. 8 is an output diagram of the evasion rate sensor, FIG. 9 is an electric circuit diagram of a main part in another embodiment, and FIG. 10 is a flowchart of the same. 53...Escape rate sensor, 59...Sensor amplitude detection circuit, 63...Sensor amplitude detection circuit (elimination control circuit), E...Amplitude.

Claims (1)

[Scope of utility model registration request] It is equipped with an impact sensor 53 that detects the falling impact force of the mixed rice after deprocessing, and a sensor amplitude detection circuit 59 that detects the amplitude of the output value of the sensor 53. A device for detecting molting rate, characterized in that it is configured to detect changes in molting rate of mixed rice.