TWI611841B - Rice mill, rice mill controller and control method thereof - Google Patents

Description

Rice mill, rice mill controller and control method thereof

The invention relates to a rice milling device, in particular to a rice milling machine, a rice milling machine controller and a control method thereof.

The conventional rice milling machine, when starting the rice milling operation, introduces the rice to be milled into the rice milling tank on the one hand, and starts the operation of the motor that drives the rice milling material on the other hand. However, when the motor is switched from the original stop state to the running state of the rice mill after being powered, since the part of the rice to be milled enters the rice milling tank, the motor is subjected to the moment of switching from static to dynamic. Larger loads will increase the wear on the motor components, shortening their service life and increasing maintenance costs.

Accordingly, it is an object of the present invention to provide a controller for a rice mill that avoids switching the motor of the rice milling machine from a stopped state to an operating state to reduce motor wear under load.

Therefore, the controller for the rice milling machine of the present invention is suitable for controlling one motor of a rice milling machine and a feeding valve, and comprises a starting control unit and a valve control unit. When the start control unit is triggered, the motor is controlled to start running and the timing is started. After the first delay time is counted, a valve control excitation is generated. The valve control unit is electrically connected to the feed valve, controlled by one of an operating mode and a stop mode, and enters the operating mode according to the valve control excitation to open the feed valve.

The utility model has the advantages that: when the starting control unit is triggered, the motor is controlled to start running, and after the first delay time is counted, the valve is controlled to activate the excitation to open the feed valve for the rice to start feeding, It is avoided that the motor is switched from the stopped state to the operating state under load, so that the wear of the motor can be effectively reduced.

Referring to Figures 1 and 2, an embodiment of the rice milling machine 100 of the present invention comprises a rice milling tank 1, a feed valve 2, a motor 3, a rice milling unit 4, and a controller 5.

The rice milling tank 1 houses rice and has an opening for the rice to pass through (not shown).

The feed valve 2 covers the opening of the rice milling tank 1, and is controlled to switch between opening and closing. When the feeding valve 2 is opened, the rice is introduced into the rice milling tank 1, when the feeding valve 2 is closed. At this time, the rice is blocked from entering the rice milling tank 1.

The motor 3 is controlled to switch between operation and stop.

The rice milling unit 4 is connected to the motor 3 and is driven by the motor 3 to grind the rice.

Referring to FIG. 3, the controller 5 is electrically connected between the R contact and the S contact of the three-phase power supply, and includes a start control unit 51, a valve control unit 52, a stop control unit 53, and a start indication group 54, And a stop indication group 55.

The start control unit 51 has a start switch group 511, a second timing switch TR2 connected to both ends of the start switch group 511, a main coil MC electrically connected to the motor 3, and a first one connected in parallel to the main coil MC. The timing coil TRC1 and an inverting relay XB connected in series to the first timing coil TRC1. The start switch group 511 has one start button PB1 and one first electromagnetic contactor MC1 connected in parallel to each other.

The valve control unit 52 has a first timing switch TR1 connected in series to each other and a valve coil VALC electrically connected to the inlet valve 2.

The stop control unit 53 has a stop switch group 531, a second electromagnetic contactor MC2 and a relay coil XC respectively connected in series to the two ends of the stop switch group 531, and a second timing coil TRC2 connected in parallel to the relay coil XC. The stop switch group 531 has a stop button PB2 and a relay X connected in parallel with each other.

The start indication group 54 has one start indicator G and a third electromagnetic contactor MC3 connected in series to each other.

The stop indication group 55 has a stop indicator light R and an inverting electromagnetic induction switch MCB connected in series to each other.

Referring to FIG. 4 and FIG. 5, the controller 5 performs a control method as shown in FIGS. 4 and 5 to control the operation of the motor 3 and the feed valve 2. The control method includes the following steps (A) to (E). ). In the following, the steps will be referred to in conjunction with FIGS. 6 to 12. For the sake of clarity, the switching elements indicated by the solid lines in FIG. 6 to FIG. 12 are in an on state, and the coil elements are in an excited state, and are dotted. The labeled switching element is in a non-conducting state, and the coil element is in a non-conducting state.

Referring to FIG. 6, step (A): the start control unit 51 is triggered to control the motor 3 to start running, and starts timing. After the first delay time is counted, a valve control excitation is generated. Step (A) includes substeps (A1) to (A3).

Sub-step (A1): the start button PB1 is triggered by pressing to cause the main coil MC to be excited to control the motor 3 to start running, and the first, second, and third electromagnetic contactors are activated according to the main coil MC. MC1, MC2, and MC3 are switched to be turned on, and the inverting electromagnetic contactor MCB is switched to be non-conductive. The activation indicator G is turned on according to the third electromagnetic contactor MC3 being turned on, and the stop indicator light R is turned off according to the non-conduction of the inverting electromagnetic contactor MCB.

Sub-step (A2): At the same time as pressing the start button PB1, the first timing coil TRC1 is excited to start timing, and the valve control excitation is generated after the first delay time is counted.

Referring to FIG. 7, sub-step (A3): after the start button PB1 is released by pressing, the first electromagnetic contactor MC1 remains conductive to keep the main coil MC and the first timing coil TRC1 continuously excited.

Referring to FIG. 8, step (B): the valve control unit 52 opens the feed valve 2 according to the valve control excitation. Step (B) includes substeps (B1) to (B3).

Sub-step (B1): The first timing switch TR1 is switched to be turned on according to the valve control excitation.

Sub-step (B2): The valve coil VALC generates a valve coil excitation according to the first timing switch TR1 being turned on, thereby opening the feed valve 2.

Sub-step (B3): The feed valve 2 is opened for the rice to be introduced into the rice milling tank 1, and the motor 3 drives the rice-rolling member 4 to grind the rice.

Referring to FIG. 9, step (C): the stop control unit 53 is triggered to terminate the valve control excitation, and starts timing, and after a second delay time, a motor control excitation is generated. Step (C) includes sub-steps (C1) to (C5).

Sub-step (C1): The stop button PB2 is pressed to cause the relay coil XC to be excited.

Sub-step (C2): The inverting relay XB is switched to be non-conducting according to the excitation coil XC.

Sub-step (C3): The first timing coil TRC1 stops the excitation according to the non-conduction of the inverting relay XB to terminate the valve control excitation.

Sub-step (C4): while pressing the stop button PB2, the second timing coil TRC2 is excited to start timing, and the motor control excitation is generated after the second delay time is counted.

Referring to FIG. 10, sub-step (C5): after the stop button PB2 is released by pressing, the relay X remains conductive to keep the relay coil XC and the second timing coil TRC2 continuously excited.

Referring again to Figure 9, step (D): the valve control unit 52 closes the feed valve 2 in accordance with the suspension of the valve control excitation. Step (D) includes sub-steps (D1) and (D2).

Sub-step (D1): The first timing switch TR1 is switched to be non-conducting according to the termination of the valve control excitation.

Sub-step (D2): The valve coil VALC terminates the valve coil excitation according to the non-conduction of the first timing switch TR1, thereby closing the feed valve 2.

Referring to Fig. 11, step (E): the start control unit 51 controls the excitation according to the motor to stop the motor 3. Step (E) includes sub-steps (E1) to (E4).

Sub-step (E1): The second timing switch TR2 switches to non-conduction according to the motor control excitation.

Referring to FIG. 12, sub-step (E2): the main coil MC stops the excitation according to the non-conduction of the second timing switch TR2 to control the motor 3 to stop running, and stops the excitation according to the main coil MC, the first and second The third electromagnetic contactors MC1, MC2, and MC3 are switched to be non-conductive, and the inverting electromagnetic contactor XB is switched to be turned on. The start indicator light G is turned off according to the third electromagnetic contactor MC3 being non-conductive, and the stop indicator light R is turned on according to the inversion electromagnetic contactor MCB being turned on.

Sub-step (E3): According to the non-conduction of the second electromagnetic contactor MC2, the relay coil XC stops exciting, and the second timer coil TRC2 terminates the motor control excitation.

Sub-step (E4): The inverting relay XB is switched to be turned on according to the stop of the excitation of the relay coil XC, and the second timing switch TR2 is switched to be turned on according to the termination of the motor-controlled excitation.

Through the above description, the above embodiment has the following advantages:

1. When the start control unit 51 is triggered, the motor 3 is controlled to start running and the timing is started, and the valve control excitation is generated after the first delay time is counted; the valve control unit 52 further controls the excitation according to the valve. Feeding the valve 2, the rice can be introduced into the rice milling tank 1 after the first delay time after the motor 3 starts to operate, so that the motor 3 can be prevented from being switched from the stopped state to the loaded state. The operating state can effectively reduce the wear of the motor 3.

2. Stopping the valve control excitation when the stop control unit 53 is triggered to control the valve control unit 52 to enter the stop mode, thereby closing the feed valve 2; and the stop control unit 53 also starts timing when triggered After the second delay time, the motor control excitation is generated, so that the motor 3 stops after the second delay time after the feed valve 2 is closed, thereby ensuring that the rice is introduced before the feed valve 2 is closed. The rice in the tank 1 can be milled during the second delay time so that the motor 3 can also be operated in an unloaded state in the next rice milling operation.

In summary, the object of the present invention can be achieved.

However, the above is only the embodiment of the present invention, and the scope of the invention is not limited thereto, and all the equivalent equivalent changes and modifications according to the scope of the patent application and the patent specification of the present invention are still The scope of the invention is covered.

100‧‧‧ rice milling machine
1‧‧‧ Milling trough
2‧‧‧feed valve
3‧‧‧Motor
4‧‧‧ Milling parts
5‧‧‧ Controller
51‧‧‧Start control unit
511‧‧‧Start switch group
52‧‧‧Valve Control Unit
53‧‧‧Stop control unit
531‧‧‧stop switch group
54‧‧‧Starting instruction group
55‧‧‧Stop instruction group
MC‧‧‧ main coil
VALC‧‧‧Valve Coil
TRC1‧‧‧First timing coil
TRC2‧‧‧Second timing coil
XC‧‧‧Relay coil
PB1‧‧‧ start button
PB2‧‧‧ stop button
MC1‧‧‧First electromagnetic contactor
MC2‧‧‧Second electromagnetic contactor
MC3‧‧‧ third electromagnetic contactor
MCB‧‧‧Reverse Magnetic Contactor
TR1‧‧‧First time switch
TR2‧‧‧Second timing switch
X‧‧‧ relay
XB‧‧‧Inverting Relay
G‧‧‧Starting indicator
R‧‧‧ stop indicator
A~E‧‧‧Steps
A1~E4‧‧‧ substeps

BRIEF DESCRIPTION OF THE DRAWINGS Other features and advantages of the present invention will be apparent from the following description of the drawings, wherein: FIG. 1 is a schematic perspective view showing an embodiment of the rice milling machine of the present invention; FIG. 2 is a block diagram; 3 is a circuit diagram illustrating a controller and a power supply module of the embodiment; FIG. 4 is a step diagram illustrating a control method; FIG. 5 is another step diagram illustrating the steps of the steps of FIG. Steps; and FIG. 6 to FIG. 12 are schematic diagrams of circuit operations, respectively illustrating the circuit actions corresponding to the controller when executing the control method.

5‧‧‧ Controller

51‧‧‧Start control unit

511‧‧‧Start switch group

52‧‧‧Valve Control Unit

53‧‧‧Stop control unit

531‧‧‧stop switch group

54‧‧‧Starting instruction group

55‧‧‧Stop instruction group

MC‧‧‧ main coil

VALC‧‧‧Valve Coil

TRC1‧‧‧First timing coil

PB1‧‧‧ start button

PB2‧‧‧ stop button

MC1‧‧‧First electromagnetic contactor

MC2‧‧‧Second electromagnetic contactor

MC3‧‧‧ third electromagnetic contactor

MCB‧‧‧Reverse Magnetic Contactor

TR1‧‧‧First time switch

TR2‧‧‧Second timing switch

X‧‧‧ relay

XB‧‧‧Inverting Relay

G‧‧‧Starting indicator

TRC2‧‧‧Second timing coil

XC‧‧‧Relay coil

R‧‧‧ stop indicator

Claims (8)

The utility model relates to a controller for a rice milling machine, which is suitable for controlling a motor of a rice milling machine and a feeding valve, and comprises: a starting control unit, which is controlled to start the operation and start timing when triggered, and a first delay in timing After the time, a valve control excitation is generated, the start control unit includes a start switch group and a main coil, and the start switch group is connected in series, and when the start switch group is triggered, the main coil is excited to start the motor Running, a first timing coil, connected to the main coil in parallel, and when the starting switch group is triggered, the first timing coil generates the valve control excitation after the first delay time, and an inverting relay is connected in series The first timing coil; a valve control unit electrically connected to the feed valve, controlled by one of an operation mode and a stop mode, and according to the valve control excitation to enter the operation mode, thereby opening the a feed valve, the valve control unit includes a first timing switch, which is switched to be turned on after receiving the valve control excitation, and a valve coil, The time switch is connected in a first, and after the first time switch is turned on, the coil is energized the valve to open the feed valve; and a stop control unit that terminates the valve control excitation when triggered to control the valve control unit to enter the stop mode, thereby closing the feed valve, the stop control unit also starts timing when triggered, and is timed by a second delay time Thereafter, a motor control excitation is generated to stop the motor, the stop control unit includes a stop switch group, and a relay coil connected in series to the stop switch group, and when the stop switch group is triggered, the relay coil is subjected to Excitation to switch the inverting relay to be non-conducting, such that the first timing coil terminates the valve control excitation to switch the first timing switch to be non-conducting, thereby causing the valve coil to stop energizing to close the feed valve. The controller for a rice milling machine according to claim 1, wherein the stop control unit further comprises: a second timing coil connected in parallel to the relay coil, and when the stop switch group is triggered, the second timing coil Exciting to generate the motor control excitation after the second delay time; the start control unit further comprising: a second timing switch connected in series to the start switch group, and after receiving the motor control excitation, the second timing switch Switching to non-conduction causes the main coil to stop energizing to stop the motor. The controller for a rice milling machine according to claim 2, wherein the starter switch group has one start button connected in parallel with each other and a first electromagnetic induction switch controlled by the main coil, the stop switch group having parallel to each other a stop button connected and a relay controlled by the relay coil And switching the first electromagnetic induction switch to be conductive when the main coil is excited, and switching the relay to be conductive when the relay coil is excited. The controller for a rice milling machine according to claim 3, wherein the stop control unit further comprises a second electromagnetic induction switch connected in series to the stop switch group and controlled by the main coil, and the main coil is excited Switching the second electromagnetic induction switch to be conductive. The controller for a rice milling machine according to claim 4, further comprising a start indication group and a stop indication group, wherein the start instruction set includes a start indicator light connected in series to each other and a third controllable to the main coil An electromagnetic induction switch, the stop indication group comprising a stop indicator light connected in series to each other and an inverting electromagnetic induction switch controlled by the main coil; wherein the third electromagnetic induction switch is respectively switched when the main coil is excited Turning on, the inverting electromagnetic induction switch is non-conducting to illuminate the start indicator light and extinguish the stop indicator light; respectively, when the main coil stops exciting, respectively switching the third electromagnetic induction switch to be non-conducting, the reverse electromagnetic induction The switch is turned on to extinguish the start indicator and illuminate the stop indicator. A rice milling machine control method is executed by a rice milling machine controller for controlling a motor of a rice milling machine and a feeding valve, the rice milling machine controller comprising a starting control unit, a valve control unit, and a stop control unit, the start control unit includes a start switch group, a main coil, the start switch group, a first timing coil, and the main coil are connected in parallel, and An inverting relay is connected in series to the first timing coil, the valve control unit includes a first timing switch, and a valve coil connected in series to the first timing switch, the stop control unit includes a stop switch group, and a relay a coil connected in series to the stop switch group, the control method comprising: (A) the start switch group of the start control unit is triggered to cause the main coil to be excited to control the start of operation of the motor, and while the start switch group is triggered, And causing the first timing coil to be excited to start timing, and generating a valve control excitation after the first timing coil is timed by a first delay time; (B) the first timing switch of the valve control unit controls the excitation switching according to the valve In order to conduct, the valve coil generates a valve coil excitation according to the first timing switch being turned on, thereby opening the feed valve; (C) the stop switch group of the stop control unit is triggered to activate the relay coil, the reverse The relay is switched to be non-conducting according to the excitation of the relay coil, and the first timing coil is not turned on according to the reverse relay. Magnetically terminating the valve to control the excitation, and the stop control unit starts timing, and after a second delay time, generates a motor control excitation; (D) the first timing switch of the valve control unit controls the termination of the excitation according to the valve Switching to non-conduction, the valve coil terminates the excitation of the valve coil according to the non-conduction of the first timing switch, thereby closing the feed valve; (E) The start control unit controls the excitation according to the motor to stop the motor. The rice milling machine control method of claim 6, wherein the activation control unit further comprises a second timing switch connected in series to the activation switch group, the stop control unit further comprising a second timing connected in parallel to the relay coil a coil, and the step (C) of the control method further comprises: (C4) starting the timing by exciting the second timing coil while triggering the stop switch group, and generating the motor after timing the second delay time Controlling the excitation; the step (E) comprises: (E1) the second timing switch is switched to be non-conducting according to the motor control excitation, and (E2) the main coil is controlled to stop the operation of the motor according to the second timing switch being non-conducting. A rice milling machine suitable for milling rice, comprising: a rice milling tank, accommodating rice, and having an opening for the rice to pass through; a feeding valve covering the opening of the rice milling tank and being controlled by Switching between opening and closing, when the feeding valve is opened, the rice is introduced into the rice milling tank, when the feeding valve is closed, the rice is blocked from entering the rice milling tank; a motor is controlled to switch between running and stopping; a rice milling piece connected to the motor, driven by the motor to grind the rice; a controller electrically connecting the motor and the feed valve, and comprising: A start control unit controls the motor to start running and starts timing when triggered, and generates a valve control excitation after a first delay time, the start control unit has a start switch group and a main coil, and the start is connected in series a switch group, and when the start switch group is triggered, the main coil is energized to start the motor, a first timing coil is connected in parallel to the main coil, and when the start switch group is triggered, the first The timing coil generates the valve control excitation after the first delay time, and an inverting relay is connected in series to the first timing coil; a valve control unit electrically connects the feeding valve, controlled in an operation mode and stops One of the modes, and enters the operation mode according to the valve control excitation, thereby opening the feed valve, the valve control unit has a first timing switch, and is switched to be conductive after receiving the valve control excitation, and a valve coil connected in series with the first timing switch, and after the first timing switch is turned on, the valve coil is energized to open The feed valve; and a stop control means terminates the valve control energized to control the valve control unit enters the stop mode is triggered, thereby closing the feed valve, the stop control unit is further to receiving start timing trigger, in After a second delay time, a motor control excitation is generated to stop the motor, the stop control unit has a stop switch group, and a relay coil, the stop switch group is connected in series, and is triggered in the stop switch group. The relay coil is energized to switch the inverting relay to be non-conducting, so that the first timing coil terminates the valve control excitation to switch the first timing switch to be non-conducting, thereby stopping the excitation of the valve coil to close the Feed valve.