JPS6049025B2 - Grain milling machine automatic adjustment device - Google Patents

Description

Detailed Description of the Invention The present invention relates to the development of an automatic adjustment device for a grain milling machine, in which the rotation of the milling trochanter is, in principle, decelerated as milling progresses, but the load on the milling chamber remains constant throughout. Alternatively, in order to stabilize, it is necessary to supplement the reduced value of the load that appears proportionally or adaptively to the deceleration simultaneously with the deceleration.

The most convenient way to do this is to increase the degree of pressure on the outlet palate of the refinery chamber. The present invention provides a switching tank by erecting two grain tanks having two drop ports with switching valves connected to the supply port of the milling room, and connecting the outlet of the milling room and the tank. are connected by a grain lifting machine, and the outlet of the grain lifting machine is connected to two drop ports of branch pipes each having a switching valve.
A pressure control device is installed on the upper part of the tank, and when the scheduled number of grain passage circulation in the milling room is reached, each of the switching valves is automatically switched, and at the same time, a pressure adjustment device for the outlet pressure cover of the milling room and a pressure control device for the milling trochanter are installed. A signal is also sent to the transmission to reduce the speed in accordance with the pressure increase.
Kimi n:fLhichu★Ichimoku-E The purpose is to save labor by automatically controlling the rational whitening action. To explain the present invention with reference to an embodiment, a polishing chamber in which a grinding type polishing trochanter 1 is mounted in a perforated whitening cylinder 2 is provided with a supply port 4 and a discharge port 5, and a groove pulley 7 and a groove pulley 7 are provided on the main shaft 6 of the polishing chamber. An adjustment pulley 9 connected to an automatic supplementary power generator 8 is attached to the shaft, and a split groove pulley 13 and a plate wheel 14 are arranged side by side on the main shaft 12 of a drive motor 11 installed at the bottom of the frame 10. The shaft attachment 1-, the disc-shaped ring 14 is the spring 15
The pulley 13 is compressed and slidably mounted on the main shaft 12.

Further, these split pulleys 13 and 14 are suspended by the upper groove pulley 7 and a belt 16, and the electric motor 11 is mounted on a speed change frame 17, and the frame 1? is configured to be moved in the vertical direction via a screw punch 19 by a speed change electric motor 18 which rotates forward and backward in response to another signal. Next, the milling chamber 3 is provided with a pressure lid 20 that automatically adjusts the pressure at its discharge port 5, and has a grain discharging port 23J equipped with a photoelectric tube 22 with an on-off valve 21 pivoted on the lower side, and a grain circulation port 23J. The lower end of the stone 24 is connected to the supply port 26 of the grain lifting machine 25, and the upper discharge port 27 of the grain lifting machine 25 is branched to a flow port 28, 29 are formed and installed in the switching tanks 30 and 31, respectively.

Further, the drop ports 32 and 33 of the tanks 30 and 31 are connected to the supply port 4 of the milling room, respectively, and open/close valves 36 are alternately opened and closed by an electromagnetic device 35 in conjunction with a level meter 34 installed in the port 4. A switching valve 37 is provided at the branch point of the upper flow ports 28 and 29 and is electrically connected to the level meter valve 34. Next, in FIGS. 2 and 3, the pressure adjustment section of the compression lid 20 will be described in detail. A rotation mechanism 62 is installed at the front upper part of the frame 10 so as to be rotatable back and forth. The horizontal spiral rod 38 is rotated in the forward and reverse directions by the forward and reverse rotation of the electric motor 63, and the weight 39 is loosely fitted into the rod 38.
While moving back and forth, the screw rod itself moves up and down, and this movement is configured to automatically adjust the pressure by moving the compression lid 20 obliquely up and down via the connecting rod 40 and the screw rod 41.

57 is a variable resistor attached to the rotating shaft.

Next, the change control unit 42 for changing the rotational speed of the rotational main shaft 6 and the degree of compression of the compression lid 20 will be described.
A control box 43 and an operation box 44 are placed on top of the control box 43 and electrically connected to each part.
(See Figures 4 and 5) includes an electromagnetic rotary switch 45 for counting the number of cycles and a toggle switch B for speed adjustment.

~6 and load adjustment toggle switch A. 6 to 6, and the operation box 44 includes an initial switch 46a.
A stop switch 46b and control circuits 47 and 48 are installed. Next, in the speed adjustment circuit 47 shown in FIG. 7, a high speed (H) variable resistor 50a is connected to one side terminal a of the comparator 49.
and a variable resistor 50b for low speed (L) are connected, and the rotation side terminal of the rotary switch 45 is connected between the respective input terminals 0 to 6 as a toggle switch B. -6, and the other side terminal b is connected to the rectifier, the variable generator 8 for the motor 18, and the DC power supply 52 in series, and the switch 45
53 is a smoothing capacitor. In addition, the comparator 49. The adjusting motor 18 is connected to the output side via an amplifier 54. In the load adjustment circuit 48 of FIG. 8, a high load (H
) variable resistor 56a and low load (L) variable resistor 5
6b, and connect the port 3 between each input terminal 0 to 6.
A toggle switch A that can switch the rotation side terminal of the tarry switch 45. .about.6, and the variable resistor 57 for the motor 63 and the DC power supply 58 are connected in series to the fixed side terminal of the switch 45 to the other side terminal b, and the comparator 5
The output side of 5 is connected to a load motor 63 via an amplifier 59.
It is connected to. Further, FIG. 6 shows an electric circuit of the level meter 34 and the electromagnetic rotary switch 45, and both terminals of the level meter 34 are connected to both ends of the coil of the switch 45 through a power source 60 and a delay relay 61, respectively.
Since the present invention is configured as described above, the raw material grain is fried through the grain frying machine 25 to fill either one of the upper switching tanks 30, 31, and in this embodiment, the number of circulation is 6. An example is shown in the following.

Assuming that the whitening action is not performed in the first three times with low load and high speed rotation, and in the latter three times with high load and low speed rotation, the control box 43 shown in FIGS. Set the speed adjustment toggle switch B from B-o to B-3 to the high speed (L) side, and from B-4 to B-6.
between A-o and A-3 to the low speed (H) side, and set the load adjustment toggle switch A to the low speed (H) side between A-o and A-3.
Set A-J4 to A-6 on the high load (L) side, and set the rotary switch 45 to count 0.
The initial switch 46 of the operation box 44 is installed in the position
When a is pressed, each circuit is energized, the drive motor 11 rotates, and the grains in the switching tank 30 flow down and are subjected to the low-load, high-speed polishing action of the milling chamber 3, and the polished rice is transferred to the lower part. The grains are fried into the switching tank 31 via the stone 24, the supply port 26, and the grain lifting machine 25, thereby completing the first round of circulation milling. When the grains in the supply port 4 flow out and disappear, the level meter 34 operates and inputs its signal output to the electromagnetic device 35, the changeover valve 37, and the rotary switch 45 to operate each device, and the switch 45 moves to the next two positions. As a result of this operation, the switching valve 37 closes the tank 31 side, the on-off valve 36 opens the tank 31 side, and the toggle switches Bl and Al instruct the same low-load, high-speed rotation state as before, so they remain as they are. Second
This will continue the whitening process. Next, when the fourth cycle number is reached, the doggle switch B4 is turned on to instruct high load and low speed rotation, so a voltage difference is generated between the terminals A and B of the comparator 55 provided in the control circuit 48. The load adjustment electric motor 63 is rotated in the forward (or reverse) direction based on the output difference, and the screw rod 38 of the section is rotated to move the weight 39 forward. 20 is moved in a protruding manner to the high load side. Then, the motor 63 rotates and stops until the output of the variable resistor 57 is synchronized with the input of the one side terminal a of the comparator 55, so the compression lid 20 moves to a high load state position and stops. become. Further, in the control circuit 47, a voltage difference is generated between terminals A and b of the comparator 49,
The speed adjustment motor 1 uses the output of the generator 8 due to the output difference.
8 in the forward (or reverse) direction to move the shift mount 17 upward to the lower speed side. Then, the motor 18 rotates and stops until the output of the automatic compulsive generator 8 is synchronized with the input of the one side terminal a of the comparator 49, so the drive motor 11 stops at the low speed rotation state position, and the The pulleys 7, 13, and 15 change the contact radius ratio to rotate the rotating main shaft 6 of the rice mill at a low speed. In this way, when the rice milling machine reaches the number of times that the polishing operation of high load and low speed rotation has been completed, the rotary switch 45 is activated by the signal from the level meter 34.
An alarm (not shown) is issued in response to the end signal of , and the on-off valve 21 is operated to open and the polished rice is discharged from the grain outlet 23 to the outside of the machine. Furthermore, when the outflow of polished rice from the grain threshing port 23 is stopped, a signal from the phototube 22 may be used to restore the device to the state before the start of operation. The present invention is configured to automatically change and adjust the load state of the milling room and the rotation speed of the milling trochanter to arbitrary loads and rotations according to the number of times the milling passes through the same milling room. It is most suitable for polishing germ rice, that is, the polishing action is continued by high speed rotation and low load during the first few times when there is no risk of germination, and the polishing action is continued by low speed rotation during the second half when there is a risk of germination. At the same time, the degree of compression of the ejection palate is automatically and mechanically increased to compensate for the insufficient value of the load proportional to the deceleration.
Stable load conditions in the milling room and moderate rotational speed changes of the milling trochanter ensure high quality and complete germ rice at all times, improve milling efficiency, and achieve labor savings by automatically controlling each part. It has remarkable effects such as

[Brief explanation of the drawing]

The drawings illustrate embodiments of the present invention; FIG. 1 is an elevational sectional view of the device of the present invention, FIG. 2 is a perspective view of its main parts, FIG. 3 is a sectional view of its rotation mechanism, and FIG. FIG. 5 is a perspective view of the control box, FIG. 5 is a perspective view of the operation box, FIG. 6 is a circuit diagram of a level meter and electromagnetic rotary switch, and FIGS. 7 and 8 are electrical circuit diagrams. 1... Grinding type whitening trochanter, 2... Porous wall whitening tube, 3... Whitening chamber, 4... Supply port, 5... ...Discharge port, 6...Rotating main shaft, 7...
...Groove pulley, 8... Generator, 9... Pulley, 10... Frame, 11... Drive electric motor, 12... ...Main shaft, 13...Pulley, 1
4... disc-shaped ring, 15... spring, 16...
...Belt, 17... Frame, 18...
・Transmission electric motor, 19...screw rod, 20...
...Compression lid, 21...Opening/closing valve, 22...
Photocell, 23... Grain threshing port, 24... Mangoku, 25... Grain lifting machine, 26... Supply port, 27... ...Discharge port, 28, 29... Downstream port, 30, 31... Switching tank, 32, 33...
...Falling port, 34...Lebel meter, 35...
...Electromagnetic device, 36...Opening/closing valve, 37...
...Switching valve, 38...Screw rod, 39...
Weight, 40... Connection rod, 40... Leopard rod, 42... Change control section, 43... Control box, 44...・・Operation box, 45・・
...Electromagnetic rotary switch, 46...Switch, 47, 48...Control circuit, 49...
Comparator, 50a, b... Variable resistor, 52...
...Power supply, 53...Capacitor, 54...
- Amplifier, 55... Comparator, 56a, b...
...Variable resistor, 57...Variable resistor, 58
...Power supply, 59...Amplifier, 60...
...Power supply, 61...Delay relay, 62...Rotating mechanism, 63...Electric motor.

Claims (1)

[Claims] 1. A switching valve is installed at the drop port of two grain tanks installed at the supply port of the milling room equipped with a milling trochanter, so that either one of the tanks is alternately connected to the supply port, and the grain is removed. Each change is made such that a circulation circuit is formed and the degree of compression of the compression lid of the discharge port is automatically changed when the switching valve is switched to an arbitrary number of circulations, and the rotation speed of the whitening trochanter is also automatically changed. An automatic adjustment device for a grain milling machine, characterized in that a control section is provided with an adjustment device that is mechanically operated by an electric circuit.