A pneumatic drain valve flushing control system, control circuit and control method

Abstract

The present invention relates to a pneumatic drain valve flushing control system, control circuit and control method, which comprises a power supply device, an air pump, a solenoid valve and an air bag, wherein the air pump inflates the air bag through the solenoid valve to open the drain valve, the solenoid valve comprises a full-discharge solenoid valve and a half-discharge solenoid valve, the air bag comprises a full-discharge air bag and a half-discharge air bag, a diode is further provided between the power supply device and the solenoid valve, the power supply device supplies power to the air pump and the solenoid valve, the power supply device can output two currents in opposite directions to the air pump and the solenoid valve, and selectively open the full-discharge solenoid valve or the half-discharge solenoid valve after the diode is turned on or off, and correspondingly inflate the full-discharge air bag or the half-discharge air bag to open the drain valve. The present invention arranges a diode so that the air pump, the full-discharge solenoid valve and the half-discharge solenoid valve are all connected to the same power supply device, and when flushing, full or half discharge can be performed by only switching the current direction, and the control logic is simple and reliable.

Description

Technical Field

[0001] The invention belongs to the field of bathrooms, and in particular relates to a flushing control system for large and small flushing of a pneumatic drain valve. Background Art

[0002] The switch of the pneumatic drain valve in the prior art is controlled by a pneumatic button, an air pump and an air bag. The full and half drain control uses a combination of two sets of air bags and a pneumatic button. For example, in the invention patent CN103883783B, a two-position three-way solenoid valve is set between the air pump, the pneumatic button and the air bag. The solenoid valve switches between manual flushing and pneumatic flushing. The full and half drains use the same control method. However, the air pump, the full drain solenoid valve and the half drain solenoid valve are controlled separately, with many control parts, complex control logic and poor reliability. Summary of the invention

[0003] The present invention aims to overcome the shortcomings of the existing pneumatic drain valve, such as complex control logic and poor reliability, and to provide a pneumatic drain valve control system with simple and reliable control logic.

[0004] The technical solution adopted by the present invention is a pneumatic drain valve flushing control system, which has a power supply device, an air pump, a solenoid valve, an air bag and a drain valve. The air pump inflates the air bag through the solenoid valve to open the drain valve. The solenoid valve includes a full-discharge solenoid valve and a half-discharge solenoid valve. The air bag includes a full-discharge air bag and a half-discharge air bag. A diode is also provided between the power supply device and the solenoid valve. The power supply device supplies power to the air pump and the solenoid valve. The power supply device can output two currents in opposite directions to the air pump and the solenoid valve. After the diode is turned on or off, the full-discharge solenoid valve or the half-discharge solenoid valve is selectively opened, and the full-discharge air bag or the half-discharge air bag is inflated accordingly to open the drain valve.

[0005] The present invention arranges a diode so that the air pump, the full-discharge solenoid valve and the half-discharge solenoid valve are all connected to the same power supply device. When flushing, full or half discharge can be performed by simply switching the current direction, and the control logic is simple and reliable.

[0006] The power supply device includes a DC power supply and a switch. The switch is arranged between the DC power supply and the solenoid valve. The switch switches the direction of the current flowing out of the DC power supply.

[0007] The switching switch is a double-pole double-throw switch, and the current direction can be switched by throwing the double-pole double-throw switch in different directions.

[0008] The control system also has a pneumatic button, which is connected to the airbag via a solenoid valve. When the power supply device fails to supply power, the pneumatic button can inflate the airbag to open the drain valve to flush water.

[0009] The pneumatic button includes a full row pneumatic button and a half row pneumatic button. The full row pneumatic button is connected to the full row of bags via a full row solenoid valve, and the half row pneumatic button is connected to the half row of bags via a half row solenoid valve. When the power supply is abnormal, the full row or half row can also be selected through the pneumatic button, and the control method of the full row and the half row is the same.

[0010] The present invention also proposes a control circuit for a pneumatic drain valve flushing control system, a control circuit for a pneumatic drain valve flushing control system, characterized in that: it has a power supply device, an air pump, a solenoid valve and a diode, the solenoid valve includes a full-row solenoid valve and a half-row solenoid valve, the diode includes a full-row diode and a half-row diode, wherein the power supply device includes two groups of electrodes (a and b, c and d) and a double-pole double-throw switch that selectively switches between the two groups of electrodes to change the direction of current input; the two groups of electrodes selectively form a first unidirectional conductive circuit with the half-row diode and the half-row solenoid valve, and form a second unidirectional conductive circuit connected in parallel with the first circuit with the full-row diode and the full-row solenoid valve, and the current conduction direction of the half-row diode is opposite to that of the full-row diode, the air pump and the selected electrode form a third circuit connected in parallel with the first circuit and the second circuit, and the first circuit, the second circuit and the third circuit form a first intersection node (E) and a second intersection node (F). The power supply device selectively outputs a forward current or a reverse current through a double-pole double-throw switch, and then the first circuit or the second circuit is selectively turned on. The air pump is not affected by the direction of current flow, and selectively inflates the full-row solenoid valve or the half-row solenoid valve connected to the full-row solenoid valve or the half-row solenoid valve.

[0011] The present invention also proposes a pneumatic drain valve flushing control method, which comprises a power supply device, an air pump, a solenoid valve, an air bag and a drain valve, wherein the solenoid valve comprises a full-row solenoid valve and a half-row solenoid valve, and the air bag comprises a full-row air bag and a half-row air bag. A full-row diode is further provided between the power supply device and the full-row solenoid valve, and a half-row diode is further provided between the power supply device and the half-row solenoid valve. The power supply device supplies power to the air pump and the solenoid valve, and the power supply device can output two currents in opposite directions to the air pump and the solenoid valve.

[0012] When a large amount of water is needed for flushing, the power supply device outputs a forward current, the air pump starts working, the full-row diode is turned on, the half-row diode is turned off, the full-row solenoid valve is opened, the half-row solenoid valve is closed, the gas output by the air pump is filled into the full-row bag through the full-row solenoid valve, and the drain valve is opened to perform full-row flushing;

[0013] When a small amount of water is needed for flushing, the power supply device outputs a reverse current, the air pump starts to work, the full-row diodes are cut off, the half-row diodes are turned on, the full-row solenoid valves are closed, the half-row solenoid valves are opened, the gas output by the air pump is filled into the half-row bag through the half-row solenoid valve, and the drain valve is opened to perform half-row flushing;

[0014] It also has a full-row brake button and a half-row brake button, wherein the full-row brake button is connected to the full-row bag, and the half-row brake button is connected to the half-row bag;

[0015] When a large amount of water is needed for flushing, press the full-discharge pneumatic button, gas will be filled into the full-discharge bag, and the drain valve will open to perform full-discharge flushing;

[0016] When a small amount of water is needed for flushing, press the half-empty pneumatic button, gas is filled into the half-empty bag, and the drain valve opens to perform half-empty flushing;

[0017] The present invention arranges a diode between the solenoid valve and the power supply device, and utilizes the conduction or cutoff effect of the diode. The DC power supply can output currents in opposite directions through a switching switch. Only one solenoid valve can be powered on and opened to connect the airway between the air pump and the airbag. The air pump does not distinguish the direction of the current. Whether the current output by the DC power supply is forward or reverse, the air pump can work, thereby enabling the air pump to inflate the airbag with an unobstructed airway and open the drain valve to flush water.

[0018] The control logic of the present invention is simple and reliable. When flushing, the direction of the switching switch or the pneumatic button can be operated to make the drain valve perform full or half drainage. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the entire row under power supply status of the present invention.

[0020] Figure 2 This is a schematic diagram of the half row in the power supply state of the present invention.

[0021] Figure 3 It is a schematic diagram of the whole row in the no-power supply state of the present invention.

[0022] Figure 4 This is a schematic diagram of the half row in the no-power state of the present invention.

[0023] In the figure, 1 is a pneumatic drain valve, 21 is a full row of pneumatic buttons, 22 is a half row of pneumatic buttons, 31 is a full row of air bags, 32 is a half row of air bags, 41 is a full row of solenoid valves, 42 is a half row of solenoid valves, 5 is an air pump, 61 is a full row of diodes, 62 is a half row of diodes, and 7 is a power supply device. DETAILED DESCRIPTION

[0024] The technical solutions and beneficial effects of the present invention will be described in detail below with reference to the accompanying drawings.

[0025] like Figures 1 to 4 As shown, the present invention provides a flushing control system for a pneumatic drain valve, comprising an air pump 5, a full-discharge solenoid valve 41, a half-discharge solenoid valve 42, a full-discharge bag 31, a half-discharge bag 32, a full-discharge actuation button 21, a half-discharge actuation button 22, a power supply device 7, a full-discharge diode 61, and a half-discharge diode 62. The pneumatic drain valve 1 is driven to open or close by two air bags. When the full-discharge bag 31 is filled with air, the pneumatic drain valve 1 performs a full-discharge flushing. When the half-discharge bag 32 is filled with air, the pneumatic drain valve 1 performs a half-discharge flushing.

[0026] The power supply device 7 includes a DC power supply and a double-pole double-throw switch. When the switch is thrown in different directions, the current direction provided by the power supply device 7 is also different. The power supply device supplies power to the air pump 5 and the full-row solenoid valve 41 and the half-row solenoid valve 42. A full-row diode 61 is provided between the full-row solenoid valve 41 and the switch, and a half-row diode 62 is provided between the half-row solenoid valve 42 and the switch. The current directions of the power supply device 7 are different. One of the two diodes is turned on and the other is turned off. When the current direction is switched, the diodes turned on and off are opposite. The diode that was originally turned on is turned off, and the diode that was originally turned off is turned on, thereby supplying power to the full-row solenoid valve 41 and the half-row solenoid valve 42 respectively. The air pump 5 is electrically connected to the switch. When the air pump is started under DC power, no matter which direction the current is, it does not affect the operation of the air pump.

[0027] The full-row solenoid valve 41 and the half-row solenoid valve 42 are both two-position three-way solenoid valves with three vents. The full-row vent I 411 is connected to the air pump outlet through the trachea, the full-row vent II 412 is connected to the air inlet of the full-row airbag 31 through the trachea, and the full-row vent III 413 is connected to the air outlet of the full-row actuation button 21 through the trachea. The half-row vent I 421 is connected to the air pump outlet through the trachea, the half-row vent II 422 is connected to the air inlet of the half-row airbag 32 through the trachea, and the half-row vent III 423 is connected to the air outlet of the half-row actuation button 22 through the trachea.

[0028] The full-exhaust vent hole I 411 is normally closed, and the full-exhaust vent hole II 412 and the full-exhaust vent hole III 413 are normally open. When the full-exhaust solenoid valve 41 is energized, the valve core moves downward, opening the full-exhaust vent hole I 411 and closing the full-exhaust vent hole III 413, connecting the air passage from the air pump 5 to the full-exhaust bag 31.

[0029] Half-row vent holes I 421 are normally closed, half-row vent holes II 422 and half-row vent holes III 423 are normally open. When the half-row solenoid valve 42 is energized, the valve core moves downward, opening the half-row vent holes I 421 and closing the half-row vent holes III 423, connecting the air passage from the air pump 5 to the half-row air bags 32.

[0030] When the full-discharge pneumatic button 21 is pressed, the full-discharge bag 31 is inflated through the air outlet and the full-discharge solenoid valve 41, thereby opening the pneumatic drain valve 1 to perform a full-discharge flush. When the half-discharge pneumatic button 22 is pressed, the half-discharge bag 32 is inflated through the air outlet and the half-discharge solenoid valve 42, thereby opening the pneumatic drain valve 1 to perform a half-discharge flush.

[0031] Operation process:

[0032] When the power supply is normal, full-drain flushing: when the double-pole double-throw switch is turned to the left to connect a and b, the positive pole of the DC power supply is connected to point E and the negative pole is connected to point F. At this time, forward current is output. Due to the unidirectional conductive effect of the full-row diode 61 and the half-row diode 62, only the full-drain solenoid valve 41 can be started. At this time, the full-drain vent holes I 411 and the full-drain vent holes II 412 in the full-drain solenoid valve 41 are connected, and the full-drain vent holes III 413 are closed. The gas in the air pump is filled into the full-drain bag 31, and the pneumatic drain valve 1 is opened to perform full-drain flushing.

[0033] When the power supply is normal, half-row flushing: when the double-pole double-throw switch is turned to the right to connect c and d, the positive pole of the DC power supply is connected to point F and the negative pole is connected to point E. At this time, reverse current is output. Due to the unidirectional conductive effect of the full-row diode 61 and the half-row diode 62, only the half-row solenoid valve 42 can be started. At this time, the half-row vent holes I 421 and the half-row vent holes II 422 in the half-row solenoid valve 42 are connected, and the half-row vent holes III 423 are closed. The gas in the air pump 5 is filled into the half-row air bag 32, and the pneumatic drain valve 1 is opened to perform half-row flushing.

[0034] When there is no power supply, full flushing: when the full-drain pneumatic button 21 is pressed, the full-drain vent hole I 411 is closed, the full-drain vent hole II 412 and the full-drain vent hole III 413 are connected, the gas in the full-drain pneumatic button 21 is filled into the full-drain bag 31, and the pneumatic drain valve 1 is opened to perform full-drain flushing.

[0035] When there is no power supply, half-flush: when the half-row actuation button 22 is pressed, the half-row vent hole I 421 is closed, the half-row vent hole II 422 and the half-row vent hole III 423 are connected, the gas in the half-row actuation button 22 is filled into the half-row bag 32, and the pneumatic drain valve 1 is opened to perform half-flush.

[0036] The above embodiments are only for illustrating the technical idea of ​​the present invention, and cannot be used to limit the protection scope of the present invention. Any improvement and equivalent replacement made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the present invention.

Claims

1. A control circuit for a pneumatic drain valve flushing control system, characterized in that: The invention has a power supply device, an air pump, an electromagnetic valve and a diode, wherein the electromagnetic valve comprises a full-row electromagnetic valve and a half-row electromagnetic valve, and the diode comprises a full-row diode and a half-row diode, wherein the power supply device comprises two groups of electrodes and a double-pole double-throw switch for selectively switching between the two groups of electrodes to change the direction of current input; one electrode group is selected from the two groups of electrodes to form a first circuit that is unidirectionally conductive with the half-row diodes and the half-row electromagnetic valves, and the other electrode group is selected to form a second circuit that is unidirectionally conductive with the full-row diodes and the full-row electromagnetic valves, and the current conduction direction of the half-row diodes is opposite to that of the full-row diodes, and the air pump and the selected electrode group form a third circuit that is parallel to the first circuit and the second circuit, and the first circuit, the second circuit and the third circuit form a first intersection node and a second intersection node.

2. A pneumatic drain valve flushing control system, characterized in that: A control circuit of a pneumatic drain valve flushing control system as described in claim 1 is adopted, comprising a power supply device, an air pump, a solenoid valve, an airbag and a drain valve, wherein the air pump inflates the airbag through the solenoid valve to open the drain valve, the solenoid valve comprises a full-discharge solenoid valve and a half-discharge solenoid valve, the airbag comprises a full-discharge airbag and a half-discharge airbag, a diode is further provided between the power supply device and the solenoid valve, the power supply device supplies power to the air pump and the solenoid valve, the power supply device can output two currents in opposite directions to the air pump and the solenoid valve, and selectively opens the full-discharge solenoid valve or the half-discharge solenoid valve after the diode is turned on or off, and accordingly inflates the full-discharge airbag or the half-discharge airbag to open the drain valve; the power supply device comprises a DC power supply and a switching switch, the switching switch is arranged between the DC power supply and the solenoid valve, and the switching switch is a double-pole double-throw switch.

3. A pneumatic drain valve flushing control system according to claim 2, characterized in that: The control system also has a pneumatic button, and the pneumatic button is connected to the airbag via a solenoid valve.

4. A pneumatic drain valve flushing control system according to claim 3, characterized in that: The pneumatic button includes a full-row pneumatic button and a half-row pneumatic button. The full-row pneumatic button is connected to the full-row bag via a full-row solenoid valve, and the half-row pneumatic button is connected to the half-row bag via a half-row solenoid valve.

5. A pneumatic drain valve flushing control method, characterized in that: A pneumatic drain valve flushing control system as claimed in claim 2 is adopted, comprising a power supply device, an air pump, a solenoid valve, an air bag and a drain valve, wherein the solenoid valve comprises a full-row solenoid valve and a half-row solenoid valve, and the air bag comprises a full-row air bag and a half-row air bag. A full-row diode is further provided between the power supply device and the full-row solenoid valve, and a half-row diode is further provided between the power supply device and the half-row solenoid valve. The power supply device supplies power to the air pump and the solenoid valve, and the power supply device can output two currents in opposite directions to the air pump and the solenoid valve; When a large amount of water is needed for flushing, the power supply device outputs a forward current, the air pump starts working, the full-row diode is turned on, the half-row diode is turned off, the full-row solenoid valve is opened, the half-row solenoid valve is closed, the gas output by the air pump is filled into the full-row bag through the full-row solenoid valve, and the drain valve is opened to perform full-row flushing; When a small amount of water is needed for flushing, the power supply device outputs reverse current, the air pump starts working, the full-row diodes are cut off, the half-row diodes are turned on, the full-row solenoid valves are closed, the half-row solenoid valves are opened, and the gas output by the air pump is filled into the half-row bag through the half-row solenoid valve, and the drain valve opens to perform half-row flushing.

6. A pneumatic drain valve flushing control method according to claim 5, characterized in that: It is provided with a full-row actuation button and a half-row actuation button, wherein the full-row actuation button is connected to the full-row bag, and the half-row actuation button is connected to the half-row bag; When a large amount of water is needed for flushing, press the full-discharge pneumatic button, gas will be filled into the full-discharge bag, and the drain valve will open to perform full-discharge flushing; When a small amount of water flushing is needed, press the half-empty actuation button, gas is filled into the half-empty bag, and the drain valve opens to perform a half-empty flush.

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