CN212283573U - Start control circuit of water storage formula reverse osmosis water purifier - Google Patents

Abstract

The utility model discloses a start control circuit of water storage formula reverse osmosis water purifier, include and concatenate the major loop that constitutes by DC power supply, switch, pressure switch, play water high pressure shut down pressure switch and drainage load, still establish ties a thyristor in the major loop, be equipped with control circuit between the negative pole of thyristor and gate pole, be equipped with play water low pressure start pressure switch and current-limiting resistor among the control circuit, play water high pressure shut down pressure switch and play water low pressure start pressure switch set up in the pipeline between water purifier water storage bucket and membrane filter equipment water purification delivery outlet, play water high pressure shut down pressure switch's action water pressure is greater than play water low pressure start pressure switch's action water pressure. This start control circuit can avoid membrane filter equipment frequent start-up, reduces and washes water consumption, can also prevent that the interior old water of water storage bucket from being detained for a long time, improves the quality of output water purification.

Description

Start control circuit of water storage formula reverse osmosis water purifier

Technical Field

The utility model relates to a control circuit of water storage formula reverse osmosis water purifier, especially a control circuit that membrane filter starts or stops in control water purifier.

Background

The water storage type reverse osmosis water purifier in the prior art sequentially comprises a filter cylinder group, a high-pressure pump, a membrane filtering device, a water storage cylinder and a water faucet along the water flow direction, a water inlet electromagnetic valve is arranged at a water inlet of the filter cylinder, a flushing wastewater ratio electromagnetic valve is arranged at a wastewater outlet of the membrane filtering device, a water inlet pressure switch with a water cut-off protection function is further arranged on a pipeline of the water inlet of the filter cylinder, a water outlet pressure switch is arranged in a pipeline between a water storage cylinder of the water purifier and a water purification output port of the membrane filtering device, and a direct-current power supply, a power supply switch, the water inlet pressure switch and the water outlet pressure switch are connected in series to form a starting control circuit. When the water storage type reverse osmosis water purifier adopting the starting control circuit works, when tap water reaches normal water supply pressure, a water inlet pressure switch on a pipeline at the water inlet of the filter cylinder is closed, when a user opens the faucet for water, the water pressure in the water storage barrel is reduced, so that the water pressure of a purified water outlet of the membrane filtering device is also reduced, when the water pressure of the purified water outlet of the membrane filtering device is lower than the action water pressure of the water outlet pressure switch, the water outlet pressure switch is closed, at the moment, the direct-current power supply, the power switch, the water inlet pressure switch and the water outlet pressure switch form a closed loop, the membrane filtering device is started, the water inlet electromagnetic valve is opened, the high-pressure pump is started, tap water is pressurized by the high-pressure pump after being filtered by the filter cartridge and enters the membrane filtering device, a self-flushing program of about 18 seconds is firstly carried out, washing the surface of the filtering membrane, directly discharging the waste water formed after washing, and outputting purified water to a water storage barrel by a membrane filtering device after washing; when the water pressure at the water purifying output port of the membrane filtering device is higher than the action water pressure of the water outlet pressure switch, the water outlet pressure switch is switched off, and the membrane filtering device stops working. Therefore, the water purifier adopting the water purifier starting control circuit can start the membrane filtering device as long as a user uses water, so that the membrane filtering device is frequently started, the service life of the high-pressure pump is influenced, and a large amount of flushing wastewater can be formed when the membrane filtering device is frequently started. In addition, the water purifier adopting the starting control circuit with the structure has the advantages that water in the water storage barrel is not completely discharged or only a small amount of water is discharged in the using process, the membrane filtering device starts the purified water, so that the purified new water is mixed with the old water in the water storage barrel, the water in the water storage barrel cannot be completely updated, and the quality of the outputted purified water is influenced.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is: the utility model provides a start control circuit of water storage formula reverse osmosis water purifier, this start control circuit can avoid the membrane filter equipment frequent start-up, reduces and washes the water consumption, can also prevent that the interior old water of water storage bucket from being detained for a long time, improves the quality of output water purification.

The technical scheme for solving the technical problem is as follows: a start control circuit of a water storage type reverse osmosis water purifier comprises a main loop formed by connecting a direct current power supply, a power switch, a water inlet pressure switch, a water outlet high-pressure stop pressure switch and a water filtering load in series, wherein a thyristor is also connected in series in the main loop, the anode and the cathode of the thyristor are connected in series in the main loop, a control loop is arranged between the cathode and the gate of the thyristor, a water outlet low-pressure start pressure switch and a current-limiting resistor are arranged in the control loop, the water outlet high-pressure stop pressure switch and the water outlet low-pressure start pressure switch are arranged in a pipeline between a water storage barrel of the water purifier and a water purification output port of a membrane filtering device, and the water outlet high-pressure stop pressure switch and the water outlet low-pressure start pressure switch are pressure switches which are closed when the water pressure in the pipeline is lower than the action; the water inlet pressure switch is a pressure switch which is switched off when the water pressure in the pipeline is lower than the action water pressure and is switched on when the water pressure is higher than the action water pressure, and the action water pressure of the water outlet high-pressure stop pressure switch is greater than the action water pressure of the water outlet low-pressure start pressure switch.

As a further improvement of the utility model: the action water pressure of the water outlet high-pressure stop pressure switch is more than 0.01MPa greater than that of the water outlet low-pressure start pressure switch.

As a further improvement of the utility model: the water filtering load comprises a high-pressure pump, a water inlet electromagnetic valve and a flushing wastewater ratio electromagnetic valve, wherein the high-pressure pump and the water inlet electromagnetic valve are arranged on a water inlet pipeline of the membrane filtering device, and the flushing wastewater ratio electromagnetic valve is arranged on the membrane filtering device.

Has the advantages that: the utility model discloses a start control circuit of water storage formula reverse osmosis water purifier, because adopted still to establish ties a thyristor in the major loop, control the switch-on of thyristor with play water low pressure start pressure switch, and set up play water high pressure shut down pressure switch and play water low pressure start pressure switch in the pipeline between water purifier water storage bucket and membrane filter equipment water purification delivery outlet, membrane filter equipment starts when water purification delivery outlet water pressure is less than the action water pressure of play water low pressure start pressure switch, membrane filter equipment stops when the action water pressure of water purification delivery outlet is higher than play water high pressure shut down pressure switch, make membrane filter equipment work in the interval of the action water pressure of play water low pressure start pressure switch and the action water pressure of play water high pressure shut down pressure switch, consequently, membrane filter equipment frequently starts has been avoided, reduce the flushing water consumption, can also prevent the interior old water of water storage bucket long-term retention, the quality of the output purified water is improved. Because the small difference value that the action water pressure of the water outlet high-pressure stop pressure switch is larger than the action water pressure of the water outlet low-pressure start pressure switch is reasonably limited, the start interval of the membrane filtering device is more reasonable, the water-saving and electricity-saving effects are better, and the old water is prevented from being retained in the water storage barrel for a long time. The technical characteristics that the water filtering load comprises a high-pressure pump and a water inlet electromagnetic valve which are arranged on a water inlet pipeline of the membrane filtering device and a flushing wastewater ratio electromagnetic valve which is arranged on the membrane filtering device are adopted, so that the automatic start-stop control of the membrane filtering device can be finished by adopting a start control circuit.

Drawings

The start control circuit of the water storage type reverse osmosis water purifier of the present invention will be further described in detail with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of a start control circuit of the water storage type reverse osmosis water purifier of the present invention;

fig. 2 is a working principle diagram of a starting control circuit of the water storage type reverse osmosis water purifier of the utility model.

Detailed Description

As shown in fig. 1, the utility model discloses a start control circuit of water storage formula reverse osmosis water purifier, include by DC power supply, switch, the pressure switch that intakes, play water high pressure shut down pressure switch and drainage load concatenate the major loop that constitutes, still establish ties a thyristor in the major loop, the positive pole and the negative pole of thyristor concatenate in the major loop, are equipped with control circuit between the negative pole of thyristor and gate pole, be equipped with play water low pressure start pressure switch and current-limiting resistor in the control circuit.

The operation principle of the start control circuit of the water storage type reverse osmosis water purifier of the present invention is described below with a water storage type reverse osmosis water purifier of a conventional structure.

As shown in fig. 2, the water storage type reverse osmosis water purifier includes a filter cartridge group, a high pressure pump, a membrane filtration device, a water storage cartridge, and a water tap, which are connected in sequence by a water pipe, wherein a water inlet solenoid valve linked with the high pressure pump is disposed on a water inlet pipeline of the filter cartridge group, and a flushing wastewater ratio solenoid valve having a time delay function is disposed on the membrane filter cartridge.

The water outlet high-pressure stop pressure switch and the water outlet low-pressure starting pressure switch are arranged in a pipeline between a water storage barrel of the water purifier and a water purification output port of the membrane filtering device, and the water outlet high-pressure stop pressure switch and the water outlet low-pressure starting pressure switch are closed when the water pressure in the pipeline is lower than the action water pressure and opened when the water pressure in the pipeline is higher than the action water pressure; the water inlet pressure switch is a pressure switch which is switched off when the water pressure in the pipeline is lower than the action water pressure and is switched on when the water pressure is higher than the action water pressure, and the action water pressure of the water outlet high-pressure stop pressure switch is greater than the action water pressure of the water outlet low-pressure start pressure switch. Preferably, the action water pressure of the water outlet high-pressure stop pressure switch is more than 0.01Mpa higher than the action water pressure of the water outlet low-pressure start pressure switch.

The utility model discloses in go out water high pressure shut down pressure switch, go out water low pressure start pressure switch and the pressure switch that intakes can select the pressure switch that CN205303330 discloses. The direct current power supply is a 24-volt direct current power supply, the thyristor is a bidirectional thyristor 1A-20A thyristor, and the current-limiting resistor is a 100-8000 ohm current-limiting resistor.

The working process of the start control circuit of the water storage type reverse osmosis water purifier of the present invention will be described below. In the embodiment shown in fig. 2: the action water pressure of the water outlet high-pressure shutdown pressure switch is as follows: 0.5MPa, the action water pressure of the outlet low-pressure starting pressure switch is as follows: 0.001 MPa, the action water pressure of the water inlet pressure switch is as follows: 0.1 MPa. Turning on a power switch, when a water inlet pressure switch detects that the water pressure in a pipeline reaches 0.1 MPa, indicating that the tap water is normally supplied, turning on a water inlet switch, when the water pressure of a purified water outlet of a membrane filtering device is lower than 0.001 MPa, turning on both a high-pressure shutdown pressure switch and a low-pressure starting pressure switch of outlet water, turning on a thyristor, electrifying a water filtering load, turning on a water inlet electromagnetic valve, starting a high-pressure pump, turning on a flushing wastewater ratio electromagnetic valve, starting a flushing program, flushing the surface of a filter membrane for about 18 seconds, turning off the flushing electromagnetic valve after flushing, starting the membrane filtering device to continuously output purified water to a water storage barrel, when the water pressure of the purified water outlet of the membrane filtering device reaches 0.001 MPa, turning off the low-pressure starting pressure switch of outlet water, as the thyristor is already turned on, the load is still electrified to work after the low-pressure starting pressure switch of outlet water is turned off, and when, and the water outlet high-pressure stop pressure switch is switched off, and the water filtering load is switched off to stop working. Therefore, the defect that the membrane filtering device is started as long as water is used in the water storage type reverse osmosis water purifier in the prior art is overcome, the starting frequency of the high-pressure pump is reduced, the service life of the high-pressure pump is prolonged, the consumption of flushing water is reduced, and the water-saving and electricity-saving effects are obvious.

Claims (3)

1. The utility model provides a start control circuit of water storage formula reverse osmosis water purifier, includes the main loop who concatenates the constitution by DC power supply, switch, pressure switch that intakes, play water high pressure shut down pressure switch and drainage load, characterized by: the water purifier is characterized in that a thyristor is also connected in series in the main loop, the anode and the cathode of the thyristor are connected in series in the main loop, a control loop is arranged between the cathode and the gate of the thyristor, a water outlet low-pressure starting pressure switch and a current-limiting resistor are arranged in the control loop, the water outlet high-pressure stopping pressure switch and the water outlet low-pressure starting pressure switch are arranged in a pipeline between a water storage barrel of the water purifier and a water purification output port of the membrane filtering device, and the water outlet high-pressure stopping pressure switch and the water outlet low-pressure starting pressure switch are pressure switches which are closed when the water pressure in the pipeline is lower than the action water pressure and are disconnected when the water; the water inlet pressure switch is a pressure switch which is switched off when the water pressure in the pipeline is lower than the action water pressure and is switched on when the water pressure is higher than the action water pressure, and the action water pressure of the water outlet high-pressure stop pressure switch is greater than the action water pressure of the water outlet low-pressure start pressure switch.

2. The start-up control circuit of a water storage type reverse osmosis water purifier as claimed in claim 1, wherein: the action water pressure of the water outlet high-pressure stop pressure switch is more than 0.01MPa greater than that of the water outlet low-pressure start pressure switch.

3. The start control circuit of the water storage type reverse osmosis water purifier according to claim 1 or 2, wherein: the water filtering load comprises a high-pressure pump, a water inlet electromagnetic valve and a flushing wastewater ratio electromagnetic valve, wherein the high-pressure pump and the water inlet electromagnetic valve are arranged on a water inlet pipeline of the membrane filtering device, and the flushing wastewater ratio electromagnetic valve is arranged on the membrane filtering device.

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