Full-automatic washing machine based on PLC

Abstract

The utility model relates to the technical field of washing machines, and discloses a full-automatic washing machine based on a programmable logic controller (PLC), which comprises the PLC, a motor, a water inlet electromagnetic valve, a water drainage electromagnetic valve, a water level switch, a dewatering clutch, an alarm and a control button, the output end of the program controller is connected with the control end of the motor, the water inlet electromagnetic valve, the water drainage electromagnetic valve and the dewatering clutch. The PLC program controller can be set to achieve full-automatic control of the washing machine, and the control process is achieved through a PLC program and comprises the processes of soaking, washing, rinsing, dewatering and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of washing machines, in particular to a full-automatic washing machine based on PLC. Background Art

[0002] As a household appliance in people's daily life, washing machines are becoming more and more common and have become one of the indispensable household appliances in people's lives. Nowadays, automation technology is becoming more and more developed. With the help of better automation technology, people's requirements for washing machines can be better met, making the use of washing machines more convenient. In recent years, products using PLC technology have gradually entered people's field of vision. Fully automatic washing machines based on PLC control can better meet people's requirements for intelligent washing machines, simple operation, and not prone to failure, and can change their operation methods at any time according to different action requirements. The rapid development of automation technology has also enabled washing machines to develop from the initial semi-automatic pulsator washing machines to the current fully automatic washing machines, and to develop rapidly towards higher intelligence, so that washing machine control technology is constantly updated.

[0003] Washing machines based on relays in the prior art cannot meet people's requirements for the degree of automation of washing machines, and are noisy, inconvenient to use, and prone to failure. Therefore, a fully automatic washing machine based on PLC is proposed to solve the above problems. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a fully automatic washing machine based on PLC in view of the deficiencies in the above-mentioned prior art.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a fully automatic washing machine based on PLC, including: a PLC program controller, a motor, a water inlet solenoid valve, a drain solenoid valve, a water level switch, a dehydration clutch, an alarm and a control button, the input end of the PLC program controller is respectively connected to the control button and the water level switch, and the output end of the program controller is respectively connected to the control end of the motor, the water inlet solenoid valve, the drain solenoid valve and the dehydration clutch.

[0006] Preferably, the control button includes a start button, a stop button and a drain button; the water level switch includes a high water level detection switch and a low water level detection switch; the control end of the motor includes a motor forward contactor and a motor reverse contactor;

[0007] The PLC program controller adopts a PLC controller with model S7-200 CPU222, including 8 digital input ports and 6 digital output ports. The digital input ports I0.0, I0.1, I0.2, I0.3 and I0.4 of the PLC program controller are respectively connected to a start button, a stop button, a drain button, a high water level detection switch and a low water level detection switch, and the digital output ports Q0.0, Q0.1, Q0.2, Q0.3, Q0.4 and Q0.5 of the program controller are respectively connected to a motor forward contactor, a motor reverse contactor, a water inlet solenoid valve, a drain solenoid valve, a dehydration electromagnetic clutch and an alarm.

[0008] Preferably, it also includes a washing machine body, which includes an outer barrel and an inner barrel installed on the same central axis; the outer barrel is fixed to the washing machine body, and holes are opened in the inner barrel wall, and a wave plate is arranged inside the inner barrel, and the wave plate and the inner barrel are coaxially connected through a dehydration electromagnetic clutch, and when the dehydration electromagnetic clutch is closed, the wave plate and the inner barrel are fixedly connected and coaxially connected, otherwise the wave plate and the inner barrel are disconnected; the axis of the wave plate is connected to the output shaft of the motor.

[0009] Preferably, a water inlet hole and a drain hole are respectively provided at the top and bottom of the washing machine body, and the water inlet solenoid valve and the drain solenoid valve are respectively arranged inside the water inlet hole and the drain hole; a washing machine upper cover is provided on the top of the washing machine body, and the start button and the stop button are installed on the top of the washing machine upper cover; the PLC program controller is installed under the upper cover.

[0010] Preferably, the high water level detection switch and the low water level detection switch are respectively arranged above and below the inside of the outer barrel.

[0011] Preferably, the alarm is a buzzer.

[0012] The utility model adopts the above technical solution, which can bring the following beneficial effects:

[0013] 1. This PLC-based fully automatic washing machine adopts the PLC program controller as the control core, has a reasonable structure, and has very strong flexibility. It can improve the reliability of equipment operation, provide a guarantee for the synchronization of various technologies of the product, and also improve work efficiency, achieving good economic results.

[0014] 2. This PLC-based fully automatic washing machine can make corresponding settings on the PLC program controller, so that each link of the washing process may include a series of processes such as water inlet, water level detection, forward rotation, pause, reverse rotation, pause, cycle, drainage, cycle, dehydration, alarm, and shutdown. All of them can be completed automatically, or the machine can be stopped and then drained and dehydrated manually. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the principle block diagram of the control system of the utility model;

[0016] Figure 2 This is the I / O wiring diagram of the PLC control system of this utility model;

[0017] Figure 3 This is the PLC sequential control function diagram of the utility model;

[0018] Figure 4 The utility model is a schematic diagram of the structure of the washing machine body.

[0019] In the figure: 1. outer barrel; 2. inner barrel; 3. upper cover; 4. motor; 5. dehydration electromagnetic clutch; 6. wave plate; 7. controller; 8. start button; 9. stop button; 10. drainage button; 11. water inlet hole; 12. drainage hole; 13. high water level detection switch; 14. low water level detection switch;

[0020] SB1, start button; SB2, stop button; SB3, drain button; SB4, high water level detection switch; SB5, low water level detection switch; YV1, water inlet solenoid valve; YV2, drain solenoid valve; YV3, dehydration solenoid clutch; HA, alarm. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1 An embodiment of the utility model is: a fully automatic washing machine based on PLC, including: a PLC program controller, a motor, a water inlet solenoid valve, a drain solenoid valve, a water level switch, a dehydration clutch, an alarm and a control button, the input end of the PLC program controller is respectively connected to the control button and the water level switch, and the output end of the program controller is respectively connected to the control end of the motor, the water inlet solenoid valve, the drain solenoid valve and the dehydration clutch.

[0023] Here, the motor can choose YY104-180 model single-phase capacitor-operated motor, whose parameters are: power 180W, rated voltage 220V, speed 1350r / min, current 1.7A, water inlet solenoid valve and drain solenoid valve execute water inlet and drain of washing machine; when washing, the PLC program controller controls the forward and reverse rotation of the motor to realize forward and reverse washing; the alarm will sound when washing is completed; control buttons can be set on the washing machine operation panel to realize start, stop and other manual operations.

[0024] See also Figure 2 In some embodiments, the control buttons may include a start button SB1, a stop button SB2 and a drain button; the water level switch may include a high water level detection switch SB3 and a low water level detection switch SB4; the control end of the motor may include a motor forward contactor KM1 and a motor reverse contactor KM2.

[0025] The PLC program controller can adopt a PLC controller with model S7-200 CPU222, which includes 8 digital input ports and 6 digital output ports. The digital input ports I0.0, I0.1, I0.2, I0.3 and I0.4 of the PLC program controller are respectively connected to the start button SB1, the stop button SB2, the drain button SB3, the high water level detection switch SB4 and the low water level detection switch SB5. The digital output ports Q0.0, Q0.1, Q0.2, Q0.3, Q0.4 and Q0.5 of the program controller are respectively connected to the motor forward contactor KM1, the motor reverse contactor KM2, the water inlet solenoid valve YV1, the drain solenoid valve YV2, the dehydration electromagnetic clutch YV3 and the alarm HA.

[0026] Here, the start button can be used to start the fully automatic washing program, the stop button can be used to manually end the washing process, and the drain button can be used to manually drain the water after stopping. The PLC controller of S7-200 CPU222 refers to: Siemens S7-200 series CPU-222 / DC / relay module, the local digital I / O is 8 input / 6 output, the input is DC 24V, and the output is relay output.

[0027] See also Figure 4 In some embodiments, it also includes a washing machine body, which may include an outer barrel 1 and an inner barrel 2 installed on the same central axis; the outer barrel 1 is fixed to the washing machine body, and a hole is opened on the wall of the inner barrel 2. A wave plate 6 is arranged inside the inner barrel 2, and the wave plate 6 and the inner barrel 2 are coaxially connected through a dehydration electromagnetic clutch 5. When the dehydration electromagnetic clutch 5 is closed, the wave plate 6 and the inner barrel 2 are fixedly connected and coaxially connected, otherwise the wave plate 6 and the inner barrel 2 are disconnected; the axis of the wave plate 6 is connected to the output shaft of the motor 4.

[0028] See also Figure 4 In some embodiments, a water inlet hole 11 and a drain hole 12 may be respectively provided at the top and bottom of the washing machine body, and the water inlet solenoid valve and the drain solenoid valve may be respectively provided inside the water inlet hole 11 and the drain hole 12; a washing machine upper cover 3 may be provided on the top of the washing machine body, and the start button 8 and the stop button 9 may both be installed on the top of the washing machine upper cover 3; the PLC program controller 7 may be installed below the upper cover 3.

[0029] See also Figure 4 In some embodiments, the high water level detection switch 13 and the low water level detection switch 14 may be disposed above and below the interior of the outer barrel 1 , respectively.

[0030] In some embodiments, the alarm may be a buzzer.

[0031] According to the actual use, the PLC program controller can be set in advance. The process of use is as follows Figure 3 Specifically, it can be as follows: when in use, first press the start button 8, the water inlet solenoid valve is connected and self-locked, and the water inlet process begins; when the set high water level is reached (which can be known through the high water level detection switch 13), the water inlet solenoid valve is closed and the water inlet process stops; then the motor 4 rotates forward, and the forward washing process is completed. At the same time, the timer of the PLC program controller starts timing, and the timing ends when the preset value is reached, and the forward washing process is completed; then the motor 4 reverses to start the backwashing process, and the timer of the PLC program controller restarts timing, and the timing ends when the preset value is reached, and the backwashing process stops; then repeat all the above actions from forward washing to backwashing until the water level reaches the preset value. The washing process is completed after a preset number of repetitions, such as 30 times; when the washing process is completed, the drain solenoid valve is controlled to drain water and enter the rinsing and secondary rinsing processes, which are controlled by the counter of the PLC program controller. When the counter counts the preset number of times (such as 3 times), the entire washing process ends and the drain solenoid valve is controlled to start draining water; when the water is drained to a low water level (which can be detected by the low water level detection switch 14), the dehydration electromagnetic clutch is controlled to start the dehydration process and the timing is restarted again. When the timing reaches the set value (such as 10 seconds), the dehydration process ends and the start buzzer (i.e., alarm) of the PLC program controller outputs an alarm prompt tone. If the stop button 9 is pressed during the above operation, all outputs of the PLC program controller are reset, and the water intake, drainage, dehydration and alarm processes are stopped. At this time, manual drainage can be controlled by the drain button 10.

[0032] The utility model provides a fully automatic washing machine based on PLC. There are many methods and ways to implement the technical solution. The above is only the preferred implementation of the utility model. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model. These improvements and modifications should also be regarded as the protection scope of the utility model. All components not specified in this embodiment can be implemented by existing technologies.

Claims

1. A fully automatic washing machine based on PLC, characterized in that: include: A PLC program controller, a motor (4), a water inlet solenoid valve, a water discharge solenoid valve, a water level switch, a dehydration clutch, an alarm and a control button, wherein the input end of the PLC program controller is respectively connected to the control button and the water level switch, and the output end of the program controller is respectively connected to the control end of the motor (4), the water inlet solenoid valve, the water discharge solenoid valve and the dehydration clutch; The control buttons include a start button, a stop button and a drain button; the water level switch includes a high water level detection switch (13) and a low water level detection switch (14); the control end of the motor (4) includes a motor forward contactor and a motor reverse contactor; The PLC program controller adopts a PLC controller of model S7-200 CPU222, including 8 digital input ports and 6 digital output ports. The digital input ports I0.0, I0.1, I0.2, I0.3 and I0.4 of the PLC program controller are respectively connected to a start button, a stop button, a drain button, a high water level detection switch (13) and a low water level detection switch (14). The digital output ports Q0.0, Q0.1, Q0.2, Q0.3, Q0.4 and Q0.5 of the program controller are respectively connected to a forward contactor of a motor (4), a reverse contactor of a motor (4), a water inlet solenoid valve, a drain solenoid valve, a dehydration solenoid clutch (5) and an alarm.

2. A fully automatic washing machine based on PLC according to claim 1, characterized in that: The washing machine also comprises a washing machine body, which comprises an outer barrel (1) and an inner barrel (2) mounted on the same central axis; the outer barrel (1) is fixed to the washing machine body, a hole is provided on the wall of the inner barrel (2), a wave disc (6) is arranged inside the inner barrel (2), the wave disc (6) and the inner barrel (2) are coaxially connected via a dehydration electromagnetic clutch (5), when the dehydration electromagnetic clutch (5) is closed, the wave disc (6) and the inner barrel (2) are fixedly connected and coaxially connected, otherwise the wave disc (6) and the inner barrel (2) are disconnected; the axis of the wave disc (6) is connected to the output shaft of the motor (4).

3. A fully automatic washing machine based on PLC according to claim 2, characterized in that: The top and bottom of the washing machine body are respectively provided with a water inlet hole (11) and a drain hole (12), and the water inlet solenoid valve and the drain solenoid valve are respectively arranged inside the water inlet hole (11) and the drain hole (12); a washing machine upper cover (3) is arranged on the top of the washing machine body, and the start button (8) and the stop button (9) are installed on the top of the washing machine upper cover (3); and the PLC program controller (7) is installed below the upper cover (3).

4. A fully automatic washing machine based on PLC according to claim 1, characterized in that: The high water level detection switch (13) and the low water level detection switch (14) are respectively arranged at the upper part and the lower part of the outer barrel (1).

5. A fully automatic washing machine based on PLC according to any one of claims 1 to 4, characterized in that: The alarm is a buzzer.

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