JPH0622693B2 - Safety device for rice polishing equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a rice polishing machine for processing rice grains into polished rice. When the supply of rice grains to the polishing chamber is stopped, the air sucking action from the polishing chamber is stopped. A safety device for preventing damage to rice grains.

In the conventional rice milling apparatus, in the grain flow stroke of the grain feeding port or discharge port of the rice polishing machine or before and after them,
A light-emitting diode or other light-source element and a light-receiving element are provided in opposition to each other through an arbitrary flux portion of the flowing grain, and the light-receiving element circuit is connected in series with an amplification circuit and a relay, and the relay is precisely connected. Connected to the electromagnetic coil circuit of the electromagnetic switch of the main motor for grain machines, when the supply of rice grains is stopped and the light receiving element receives light from the light source, the main motor is automatically stopped by the detection signal. Stop device is Japanese Patent Laid-Open No. 51-9647.
It is known as Japanese Patent No.

Further, in a whitening chamber formed by arranging a whitening trochanter inside a white-walled bran removal and whitening tube with a porous wall that communicates with a humidifying device, an electromagnetic on-off valve interposed in a water supply pipe of the humidifying device feeds grains in the whitening chamber. The grain flow sensing and measuring device equipped in the grain feeding stroke at or near the mouth is electrically connected, and when the grain in the grain feeding stroke stops flowing, the opening / closing valve opens the water supply pipe. An automatic moisture stop safety device for a humidified rice milling machine which sends a signal from the measuring device to the solenoid valve to stop the water supply when the rice grain supply to the milling chamber is interrupted
It is known as Japanese Patent Publication No. 4-60163.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In the automatic stopping device of the grain refiner described in JP-A-51-96471, even if the rice grain supply is temporarily stopped, the light receiving element once supplies the rice grain. If the electric motor is stopped by the signal when it detects interruption, the operation cannot be restarted unless the start switch is operated even if rice grains are supplied again. There was a drawback that the processing amount of polished rice could not be secured.

Further, in the device for automatically stopping the water content of the humidified rice polishing machine described in JP-A-54-60163, when the rice grain supply is interrupted, the electromagnetic opening / closing valve is closed to stop the water supply to the polishing chamber. However, the signal from the grain flow sensing / measuring device that has detected that the rice grains have been supplied again to the grain feeder can automatically supply water to the rice grains flowing in the polishing chamber by opening the electromagnetic on-off valve. Therefore, automatic operation can be implemented, but it does not stop the electric motor that drives the white trochanter at the time of grain supply interruption. The rice grains to be dried were dried, and cracks were generated in the rice grains due to the drying, so that defects that induce crushed grains were not solved.

The present invention is to solve the above problems, when the supply of rice grains is interrupted, automatically stop the air suction action for the rice bran,
When the supply of rice grains is restarted, an air-blowing action for collecting rice bran is performed to prevent damage to the rice grains that occurs when the rice grain supply is interrupted.

MEANS FOR SOLVING THE PROBLEMS The present invention forms a polishing chamber by rotatably arranging a polishing trochanter inside a polishing tube for removing bran on a porous wall to form a polishing chamber, and collecting the bran removed from the polishing chamber. In a rice milling device formed in a rice bran stroke by connecting a rice bran gutter associated with the whitening chamber, and connecting a suction port of an air exhauster that sucks the bran and the rice bran gutter by a duct. To the rice supplying unit that supplies rice grains to the chamber, when the supply of rice grains is interrupted, the air suction action is stopped,
The above-mentioned problems are solved by a configuration in which a rice grain detection sensor provided in the rice supply unit and a wind suction action control device for the rice bran stroke are connected via a control circuit.

When the rice grain detection sensor installed in the rice supply unit detects that the rice grain supply has been interrupted, the output signal from the control circuit that communicates the detection signal causes the air intake action control device to operate The rice grains that had stayed at the bottom of the whitening chamber due to the action of wind were released from the function of adsorbing and retaining them at the bottom of the whitening chamber.
Since the white trochanter is guided by the rotation and discharged to the outside of the machine, there is no possibility that the rice grains are dried by sucking air to generate crushed grains. Then, the rice grain detection sensor detects that the rice grain has been supplied, and sends the output signal of the control circuit, which has been communicated, to the air-blowing action control device to restore the air-blowing action of the exhaust fan to respond to the restart of the rice grain supply. Normal operation is automatically restarted.

Embodiment An embodiment of the present invention will be described with reference to FIGS. 1 and 2. A porous wall bran-removing whitening cylinder 2 is provided inside the machine frame 1, and a whitening trochanter 4 having a spiral trochanter 3 connected to the inside of the whitening cylinder 2 is mounted on a main spindle tube 5 to form a whitening chamber 6. To do. A rice grain detection sensor 9 for detecting the presence or absence of rice grains is provided at an arbitrary portion of the rice feed port 7 that connects to the polishing chamber 6 and the rice feed unit of the hopper 8, and a shutter opening / closing device 11 is connected to a shutter 10 that opens and closes the rice feed port 7. I am doing it.

A large number of moisturizing holes 12 formed in the main shaft tube 5 communicate with the moisturizing groove holes 13 of the whitening trochanter 4, and a two-fluid ultrasonic nozzle 15 is provided at one end 14 of the main shaft tube 5, and The water supply pipe 16 side of the sonic nozzle 15 is connected to a water tank 18 through an electromagnetic opening / closing valve 17, and the air supply pipe 19 side is connected to an air compressor 20. The water supply pipe 16 and the air pipe 19 are connected to each other. The water supply device 21 is formed by the process.

In the middle part of the main shaft tube 5, a wall board 22 is fitted and the main shaft tube 5 is divided into a humidification pipe 23 and an air suction pipe 24, and the first half from the supply part 7 of the polishing chamber 6 to almost the middle stroke. The part is a humidification and polishing chamber 25 communicating with the water supply device 21, and the humidification and polishing process is formed as a ventilation and polishing chamber 26 in the latter half of the process from the intermediate process of the polishing chamber 6 to the rice discharging unit 27. The ventilation and polishing chamber 26 is the main tube. 5, a ventilation hole 28, a moisturizing groove hole 13 of the whitening trochanter 4, and a whitening tube 2 for removing the multi-walled bran.

An air suction action control device which is formed in a rice bran stroke by connecting a rice bran gutter 29 which surrounds the polishing chamber 6 in a related manner and an air suction port 31 of an air exhauster 30 by a duct 32, and which is provided at an arbitrary position in the rice bran stroke. 33 is formed by axially attaching one end of an on-off valve 34 in a duct 32, fixing an operating rod 35, and connecting the operating rod 35 and an air cylinder 36. Reference numeral 37 is an air suction tube for taking in air from the outside of the collecting bran 29. A grooved wheel 39 axially inserted in the main shaft tube 5 is driven from an electric motor 38 via a belt 40, and an exhaust fan 30 is driven from the grooved wheel 39 via a belt 41. The rice discharging unit 27 is equipped with a load adjusting device 42 that adjusts the pressure level of the friction between the rice grains in the whitening chamber 6, and 43 is a control device.

Next, the configuration of the control device 43 will be described with reference to FIG.
Timers 45, 46, 47, and 48 are provided on the output side of the control circuit 44 to which the rice grain detection sensor 9 is connected, and the output of the timer 46 is output to the shutter opening / closing device 11 via the drive circuit 49 on the output side of the timer 45. To the solenoid on-off valve 17 via the drive circuit 50, and to the output side of the timers 47, 48 via the drive circuit 51 on the side.
Is connected to each of the air cylinders 36 of FIG.

The operation of the above configuration will be described with reference to FIGS. When brown rice or white rice immediately before the standard whiteness is supplied to the hopper 8 and the electric motor 38 is started, the rice grain detection sensor 9 provided in the rice feeding section detects the presence of rice grains and notifies the control circuit 44 of the signal. The output signal from the circuit 44 is connected to the timers 45, 46 and 47, and the signal input to the timer 47 is output to the drive circuit 51 with a delay of several seconds to operate the air cylinder 36 and rotate the open / close valve 34. Then, the air intake path in the duct 32 is made to communicate with the air exhauster 30 to start the air intake action to the whitening chamber 6. After the operation of the air cylinder 36, the shutter opening / closing device 11 is operated by the output signal of the timer 45 via the drive circuit 49 to open the rice supply port 7 and supply the rice grains to the humidifying and polishing chamber 25. After the lapse of an arbitrary time when the shutter opening / closing device 11 is operated, the output signal of the timer 46 is communicated to the electromagnetic opening / closing valve 17 via the drive circuit 50, and the opening / closing valve 17 is operated to supply the moisture supply device 21 to the humidification whitening chamber 25. To start supplying water. Water is added to the rice grains flowing in the humidifying and polishing chamber 25 from the two-fluid ultrasonic nozzle 15 through the humidifying pipe 23, the humidifying hole 12, and the humidifying groove hole 13 to wet and soften the rice grain surface layer portion. The bran was peeled off easily, and the bran was peeled from the rice grain layer by the stirring action of the milling trochanter 4 to remove it outside the milling tube 2 for the porous wall bran removal, and was transferred to the ventilation milling chamber 26 by the spiral rotator 3. The rice grain is polished by the pressure control of the load adjusting device 42 and the frictional action of the white trochanter 4, and the wind sucked from the suction pipe 24 is sucked into the suction holes 28,
The white rice, which has been processed into glossy rice by allowing the rice grain surface to be dried by flowing through the moisturizing groove 13 to the ventilation whitening chamber 26, is discharged from the rice discharging port 27. The bran removed to the outside of the whitening chamber 6 is sucked by the blower 30 by the air suction action of the blower 30 and discharged outside the blower 30.

During the above-mentioned rice polishing, the supply of rice grains to the rice supplying section is interrupted due to some reason, and when the rice grain detection sensor 9 detects that the rice grains are no longer supplied, the detection signal is notified to the control circuit 44, From the circuit 44 to the timers 45, 4
An output signal is output to 6 and 48, the signal from the timer 45 is communicated to the shutter opening / closing device 11 via the drive circuit 49, and the opening / closing device 11 is operated to close the rice supply port 7 by the shutter 10. Delaying the operation of the shutter opening / closing device 11, the electromagnetic opening / closing valve 17 is opened by a signal sent from the timer 46 to the drive circuit 50 to stop the water supply. After a lapse of an arbitrary time after the operation of the electromagnetic opening / closing valve 17 is stopped,
The air cylinder 36 is operated by a signal transmitted from the timer 48 to the drive circuit 51, the opening / closing valve 34 is rotated to close the duct 32 communicating with the polishing chamber 6, and the wind is introduced from the air suction tube 37 to blow the bran. Continue to be transported. When the rice grain supply is interrupted, the transport action of the spiral rotator 3 is attenuated, and the rice grain retained at the bottom of the whitening chamber 6 due to the air suction action of the blower 30 stops the air suction action by the air suction action control device 33. At the same time, the action of the rice grains adsorbing to the bottom of the whitening chamber 6 is released, and the rice grains floating in the whitening chamber 6 are guided by the whitening trochanter 4 to the discharged rice portion 27. The problem of drying the rice grains and damaging them is eliminated.

FIG. 4 shows another embodiment of the air intake action control device, in which the exhaust fan 30 is rotatably driven via the belt 41 from the grooved wheel 39 mounted on the main shaft tube 5 to the side wall of the machine frame 1. The air cylinder 53 is connected to the belt tension adjusting device 52 which is rotatably supported once, and the belt tension adjusting device 52 of the belt 41 is operated by the signal of the rice grain detection sensor 9 to operate / stop the exhaust fan 30. This is the air suction action control device 33A configured to control the air suction action. In this embodiment, the tension of the belt 41 is properly secured by the action of the belt tension adjusting device 52 during normal operation, so that no driving error occurs.

Further, when the air blower 30 is installed at a remote location from the rice milling device, the electric motor for driving the air blower 30 is used as the operation / stop control switch as the air intake action control device, and the control switch and the rice grain detection sensor 9 are combined. It may be implemented by connecting via the control circuit 44.

FIG. 5 and FIG. 6 show a cross section of a rice polishing apparatus in which the water supply device is not communicated with the above-mentioned polishing chamber.
The one shown in the figure is a friction-type rice milling machine in which a whitening trochanter 4A having a ridge is rotatably mounted on a polygonal whitening wall 2A for removing rice bran.

The one shown in FIG. 6 is a grinding type rice milling machine in which a polishing trochanter 4B formed by a circular hard-stone grinding wheel is rotatably mounted inside a polishing tube 2B for removing bran from a circular porous wall, and 54 is a polishing machine. A resistance claw that promotes the frictional resistance and stirring action of the rice grains flowing in the room, and 55 is an operating rod for adjusting the angle of the resistance claw.

Both the friction type rice milling machine and the grinding type rice milling machine can implement the air suction action control device of the present invention, and the effect is the same as described above.

Effects of the Invention As described above, according to the present invention, when the supply of rice grains is interrupted, the air sucking action is automatically stopped, and the rice grains staying in the polishing chamber do not have an air sucking action. It is possible to prevent damage caused by cracks caused by the above, and when the supply of rice grains is started, the air suction action is automatically restarted and normal operation can be continued.

[Brief description of drawings]

FIG. 1 is a partially sectional side view showing an embodiment of the present invention, FIG. 2 is an enlarged view of a main part of FIG. 1, FIG. 3 is a configuration diagram of a control device of the present invention, and FIG. FIG. 5 shows another embodiment of the air intake action control device of the present invention, FIG. 5 shows another embodiment of the rice polishing device, and FIG. 6 shows another embodiment of the rice polishing device. 1 ...... Machine frame 2, 2A, 2B …… Whitening tube for removing bran on porous wall 3 …… Spiral trochanter, 4, 4A, 4B …… Whitening trochanter 5 …… Main shaft tube, 6 …… Whitening chamber 7… ... rice supply port, 8 ... hopper, 9 ... rice grain detection sensor, 10 ... shutter, 11 ... shutter opening / closing device, 12 ... moisturizing hole, 13 ... moisturizing groove hole, 14 ... one end 15 ... … Two-fluid ultrasonic nozzle, 16 …… Water supply pipe 17 …… Electromagnetic on-off valve, 18 …… Water tank 19 …… Air supply pipe, 20 …… Air compressor 21 …… Moisture supply device, 22 …… Shading board 23… … Humidification pipe, 24 …… Air intake pipe 25 …… Humidification whitening room, 26 …… Ventilation whitening room 27 …… Rice removal part, 28 …… Air intake hole 29 …… Collecting bran gutter, 30 …… Air blower 31 ...... Air intake, 32 ...... Ducts 33, 33A ...... Air intake control device 34 ...... Open / close valve, 35 ...... Operating rod 36 ...... Air cylinder, 3 7 ... Air suction tube 38 ... Electric motor, 39 ... Groove 40 ... Belt, 41 ... Belt 42 ... Load adjusting device, 43 ... Control device 44 ... Control circuit 45, 46, 47, 48 ... … Timer 49, 50, 51 …… Driving circuit 52 …… Belt tension adjusting device 53 …… Air cylinder, 54 …… Resistant claw 55 …… Angle adjusting operation rod

Claims (5)

[Claims] 1. A polishing bran gutter that collects bran removed from the whitening chamber by arranging a whitening trochanter rotatably inside a whitening barrel for removing bran from a multi-walled wall, and polishing the bran. In a rice milling apparatus which is connected to a room and is formed in a rice bran stroke by connecting a suction port of an air exhauster for sucking the bran and the rice bran gutter with a duct, a rice grain supply unit for supplying rice grains to the whitening chamber In the rice part, when the supply of rice grains is interrupted, the air sucking action is stopped,
A safety device for a rice polishing device, comprising a rice grain detection sensor provided in the rice feeding unit and a wind suction action control device for the rice bran collecting process connected via a control circuit. 2. A shutter opening / closing device provided in the rice feeding unit and a water supply device communicating with the polishing chamber are connected to the control circuit, and a signal indicating that the rice grain detection sensor detects the presence of rice grains is sent. In the connected control circuit, after operating the air suction effect control device, the shutter opening and closing device,
Next, the safety device for the rice polishing apparatus according to claim (1), further comprising a delay timer for operating the water supply device. 3. The air intake action control device is an opening / closing valve mechanism provided at an arbitrary position in the rice bran stroke.
Safety device for rice polishing equipment as described in (1). 4. The safety device for a rice polishing apparatus according to claim 1, wherein the air intake action control device is a belt tension adjusting device provided on a belt for driving an exhaust fan. 5. The safety device for a rice polishing apparatus according to claim 1, wherein the air intake action control device is a switch for controlling the operation / stop of the electric motor for driving the exhaust fan.