CN105084465A - Reverse osmosis water purification system and wastewater discharge control method thereof - Google Patents

Abstract

The invention discloses a reverse osmosis water purification system, which comprises a filter, a wastewater discharge pipe and a controller, wherein a reverse osmosis membrane filter element is arranged in the filter, and the filter comprises a wastewater discharge port; the waste water discharge pipe is connected with the waste water discharge port, and a first water inlet electromagnetic valve and a waste water valve are arranged on the waste water discharge pipe; and in the water making state of the reverse osmosis water purification system, the controller controls the first water inlet electromagnetic valve to be opened intermittently. The invention also discloses a wastewater discharge control method of the reverse osmosis water purification system. The invention reduces the discharge of waste water and the waste of water resources.

Description

Reverse osmosis water purification system and its wastewater discharge control method

technical field

The invention relates to the field of water purifiers, in particular to a reverse osmosis water purification system and a wastewater discharge control method thereof.

Background technique

At present, in the reverse osmosis water purification system, a waste water discharge pipe is usually connected to the waste water outlet of the filter to discharge the waste water in the filter, and a waste water valve is set on the filter to control the waste water discharge. In the traditional reverse osmosis water purification system, when water is produced, the waste water valve is always in the state of discharging waste water, resulting in a large amount of waste water discharge, resulting in a waste of water resources.

Contents of the invention

The main purpose of the present invention is to provide a reverse osmosis water purification system and its wastewater discharge control method, aiming at reducing the discharge of wastewater and reducing the waste of water resources.

In order to achieve the above object, the present invention provides a reverse osmosis water purification system, the reverse osmosis water purification system includes a filter, a waste water discharge pipe and a controller, a reverse osmosis membrane filter element is installed in the filter, and the The filter includes a waste water outlet; the waste water discharge pipe is connected to the waste water discharge pipe, and the waste water discharge pipe is provided with a first water inlet solenoid valve and a waste water valve; the reverse osmosis water purification system is in the state of water production , the controller controls the first water inlet solenoid valve to be intermittently opened.

Preferably, the controller is specifically configured to: control the opening of the first water inlet solenoid valve when the closing duration of the first water inlet solenoid valve is greater than a first preset time; When the solenoid valve is opened for longer than the second preset time, the first water inlet solenoid valve is controlled to be closed.

Preferably, the first preset time is 1S-2S, and the second preset time is 2S-5S.

Preferably, the reverse osmosis water purification system further includes a drain pipe connected to the drain outlet, and a second water inlet solenoid valve is provided on the drain pipe.

Preferably, the reverse osmosis water purification system further includes a detector for detecting the concentration of total dissolved substances in water, and the controller adjusts the opening of the waste water valve according to the concentration detected by the detector.

Preferably, the reverse osmosis water purification system further includes a booster pump, the water inlet end of the booster pump is connected to the tap water pipe, and the water outlet end is connected to the filter.

In addition, in order to achieve the above object, the present invention also provides a wastewater discharge control method of a reverse osmosis water purification system, the reverse osmosis water purification system is the above-mentioned reverse osmosis water purification system, and the wastewater discharge control method of the reverse osmosis water purification system Methods include:

When the reverse osmosis water purification system is in the water production state, the first water inlet electromagnetic valve is controlled to be intermittently opened.

Preferably, controlling the intermittent opening of the first water inlet solenoid valve includes:

When the closing duration of the first water inlet solenoid valve is longer than the first preset time, the first water inlet solenoid valve is controlled to open; when the first water inlet solenoid valve is opened for longer than the second preset time time, control the first water inlet solenoid valve to close.

Preferably, the first preset time is 1S-2S, and the second preset time is 2S-5S.

Preferably, the wastewater discharge control method of the reverse osmosis water purification system also includes:

Detect the concentration of total dissolved substances in water;

The opening of the waste water valve is adjusted according to the detected concentration.

In the embodiment of the present invention, a first water inlet solenoid valve and a waste water valve are arranged on the waste water discharge pipe, and the first water inlet solenoid valve is intermittently controlled to open intermittently, thereby forming a pulsed waste water discharge. Compared with the continuous control of waste water discharge through the waste water valve in the prior art, the embodiments of the present invention reduce waste water discharge and waste of water resources. In addition, through the cooperation of the first water inlet solenoid valve and the waste water valve, in the state of water production, when the first water inlet solenoid valve is opened, the waste water is discharged normally through the waste water valve; when the first water inlet solenoid valve is closed, the system is in Stopping the waste water state can increase the water pressure of the system, thus increasing the pure water effluent flow.

Description of drawings

Fig. 1 is a schematic diagram of the system frame structure of a preferred embodiment of the osmotic water purification system of the present invention;

Fig. 2 is a schematic flow diagram of a preferred embodiment of the wastewater discharge control method of the reverse osmosis water purification system of the present invention.

The realization of the purpose of the present invention, functional characteristics and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

Explanation of reference numbers:

label name label name 10 filter 30 booster pump 20 waste water discharge pipe 40 Water pipe twenty one The first water inlet solenoid valve 50 drain pipe twenty two waste water valve 51 Second water inlet solenoid valve

Detailed ways

It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

The present invention provides a reverse osmosis water purification system. Referring to FIG. 1, in one embodiment, the reverse osmosis water purification system includes: a filter 10, a waste water discharge pipe 20 and a controller, and the filter 10 is equipped with a reverse A permeable membrane filter element, and the filter 10 includes a waste water outlet; the waste water discharge pipe 20 is connected to the waste water discharge pipe, and the waste water discharge pipe is provided with a first water inlet solenoid valve 21 and a waste water valve 22; When the reverse osmosis water purification system is in the water production state, the controller controls the first water inlet solenoid valve 21 to open intermittently.

In the embodiment of the present invention, the above-mentioned first water inlet solenoid valve 21 is used to control whether the waste water is discharged through the waste water discharge pipe 20. When the first water inlet solenoid valve 21 is opened, the waste water discharge pipe 20 can be in the drainage state, and the waste water is discharged. The water in the pipe 20 can be discharged through the first water inlet solenoid valve 21; when the first water inlet solenoid valve 21 is closed, the waste water discharge pipe 20 stops draining. The above-mentioned waste water valve 22 is used to control the flow of drainage. When the water pressure is higher, the drainage volume is larger; when the water pressure is lower, the drainage volume is smaller. The positional relationship between the above-mentioned first water inlet solenoid valve 21 and the waste water valve 22 can be set according to actual needs. Between the waste water valve 22. When the first water inlet solenoid valve 21 is opened, the waste water in the filter 10 will enter the waste water discharge pipe 20 through the drain outlet, and then be discharged after passing through the first water inlet solenoid valve 21 and the waste water valve 22 .

Specifically, the controller controlling the first water inlet solenoid valve 21 to open intermittently refers to controlling the first water inlet solenoid valve 21 to open for a period of time, and then controlling the first water inlet solenoid valve 21 to close for a period of time, so that the cycle is repeated. In the control process of controlling the opening and closing of the first water inlet solenoid valve 21, because the first water inlet solenoid valve 21 is controlled to open intermittently, a pulsed waste water discharge is formed, and the effect of intermittent flushing of the reverse osmosis membrane filter element is achieved, so it is effective Extend the service life of the reverse osmosis membrane filter element.

In the embodiment of the present invention, a first water inlet solenoid valve 21 and a waste water valve 22 are arranged on the waste water discharge pipe 20, and the first water inlet solenoid valve 21 is intermittently controlled to open intermittently, thereby forming a pulsed waste water discharge. Compared with the continuous control of waste water discharge through the waste water valve in the prior art, the embodiments of the present invention reduce waste water discharge and waste of water resources. In addition, through the cooperation of the first water inlet solenoid valve 21 and the waste water valve 22, in the water production state, when the first water inlet solenoid valve 21 is opened, the waste water is discharged normally through the waste water valve 22; when the first water inlet solenoid valve 21 When it is closed, the system is in the state of stopping the discharge of waste water, which can increase the water pressure of the system, thus increasing the flow of pure water.

Further, the control method for controlling the intermittent opening of the first water inlet solenoid valve 21 can be set according to actual needs. In this embodiment, preferably, the above-mentioned controller is specifically configured to: control the opening of the first water inlet solenoid valve 21 when the closing duration of the first water inlet solenoid valve 21 is longer than the first preset time; When the first water inlet solenoid valve 21 is opened for a duration greater than a second preset time, the first water inlet solenoid valve 21 is controlled to be closed.

In this embodiment, the time lengths of the first preset time and the second preset time can be set according to actual needs, and no further limitation is made here. Preferably, the first preset time is shorter than the second preset time . For example, the above-mentioned first preset time is 1S-2S, and the above-mentioned second preset time is 2S-5S. Hereinafter, the first preset time is 2S, and the second preset time is 3S as an example for detailed description. Specifically, when producing water, the first water inlet electromagnetic valve 21 can be controlled to open for 3 seconds, then the first water inlet electromagnetic valve 21 can be controlled to close for 2 seconds, and then the first water inlet electromagnetic valve 21 can be controlled to open for 3 seconds, so Continue to circulate until the end of water production.

It should be noted that the above reverse osmosis water purification system further includes a booster pump 30 , the water inlet end of the booster pump 30 is connected to the tap water pipe 40 , and the water outlet end is connected to the filter 10 . In this embodiment, the booster pump 30 is mainly used to boost the water in the tap water pipe 40 , and after the water pressure is increased, the filter 10 is filtered through a reverse osmosis membrane filter element.

Further, the above-mentioned reverse osmosis water purification system also includes a drain pipe 50 connected to the drain outlet, and a second water inlet solenoid valve 51 is provided on the drain pipe 50 .

In this embodiment, the above-mentioned second water inlet solenoid valve 51 is used to control whether the waste water is discharged through the drain pipe 50 . Since the drain pipe 50 and the second water inlet solenoid valve 51 are separately provided to discharge the waste water in the filter 10 without hindrance, it is convenient to flush the filter 10 . Specifically, when flushing the filter 10 , the second water inlet solenoid valve 51 is controlled to open, so as to directly drain water through the drain pipe 50 .

Further, based on the above-mentioned embodiment, in this embodiment, the above-mentioned reverse osmosis water purification system further includes a detector for detecting the concentration of total dissolved substances in water, and the controller adjusts the The opening of waste water valve 22.

In this embodiment, the concentration of total soluble substances in the above water is TDS, specifically, the detector in the prior art can be used to detect the size of the TDS value, and then adjust the opening of the waste water valve 22 according to the detected TDS value . When the TDS value is larger, the opening of the waste water valve is also larger. Specifically, classification can be performed, and the opening of the waste water valve 22 can be determined according to the interval to which the TDS value belongs. It should be noted that, in this embodiment, increasing the opening of the waste water valve 22 refers to increasing the outlet flow of the waste water valve 22 under the same water pressure. Since the concentration of total dissolved substances in the water body is detected and the opening of the waste water valve 22 is adjusted according to the detected concentration, the discharge of waste water is effectively controlled according to the water quality.

Further, referring to Fig. 1 and Fig. 2, the present invention also provides a wastewater discharge control method of a reverse osmosis water purification system, the reverse osmosis water purification system is the reverse osmosis water purification system in the above embodiment, and the reverse osmosis water purification system Wastewater discharge control methods for water purification systems include:

Step S10, when the reverse osmosis water purification system is in the water production state, control the first water inlet electromagnetic valve to be intermittently opened.

In the embodiment of the present invention, the above-mentioned first water inlet solenoid valve 21 is used to control whether the waste water is discharged through the waste water discharge pipe 20. When the first water inlet solenoid valve 21 is opened, the waste water discharge pipe 20 can be in the drainage state, and the waste water is discharged. The water in the pipe 20 can be discharged through the first water inlet solenoid valve 21; when the first water inlet solenoid valve 21 is closed, the waste water discharge pipe 20 stops draining. The above-mentioned waste water valve 22 is used to control the flow of drainage. When the water pressure is higher, the drainage volume is larger; when the water pressure is lower, the drainage volume is smaller. The positional relationship between the above-mentioned first water inlet solenoid valve 21 and the waste water valve 22 can be set according to actual needs. Between the waste water valve 22. When the first water inlet solenoid valve 21 is opened, the waste water in the filter 10 will enter the waste water discharge pipe 20 through the drain outlet, and then be discharged after passing through the first water inlet solenoid valve 21 and the waste water valve 22 .

Specifically, the controller controlling the first water inlet solenoid valve 21 to open intermittently refers to controlling the first water inlet solenoid valve 21 to open for a period of time, and then controlling the first water inlet solenoid valve 21 to close for a period of time, so that the cycle is repeated. In the control process of controlling the opening and closing of the first water inlet solenoid valve 21, because the first water inlet solenoid valve 21 is controlled to open intermittently, a pulsed waste water discharge is formed, and the effect of intermittent flushing of the reverse osmosis membrane filter element is achieved, so it is effective Extend the service life of the reverse osmosis membrane filter element.

In the embodiment of the present invention, a first water inlet solenoid valve 21 and a waste water valve 22 are arranged on the waste water discharge pipe 20, and the first water inlet solenoid valve 21 is intermittently controlled to open intermittently, thereby forming a pulsed waste water discharge. Compared with the continuous control of waste water discharge through the waste water valve in the prior art, the embodiments of the present invention reduce waste water discharge and waste of water resources. In addition, through the cooperation of the first water inlet solenoid valve 21 and the waste water valve 22, in the water production state, when the first water inlet solenoid valve 21 is opened, the waste water is discharged normally through the waste water valve 22; when the first water inlet solenoid valve 21 When it is closed, the system is in the state of stopping the discharge of waste water, which can increase the water pressure of the system, thus increasing the flow of pure water.

Further, controlling the intermittent opening of the first water inlet solenoid valve in the above step S10 includes:

When the closing duration of the first water inlet solenoid valve is longer than the first preset time, the first water inlet solenoid valve is controlled to open; when the first water inlet solenoid valve is opened for longer than the second preset time time, control the first water inlet solenoid valve to close.

Further, the control method for controlling the intermittent opening of the first water inlet solenoid valve 21 can be set according to actual needs. In this embodiment, preferably, controlling the intermittent opening of the first water inlet solenoid valve in the above step S10 includes:

When the first water inlet solenoid valve 21 is closed for a duration greater than the first preset time, the first water inlet solenoid valve 21 is controlled to open; when the first water inlet solenoid valve 21 is opened for a duration longer than the first preset time At two preset times, the first water inlet solenoid valve 21 is controlled to be closed.

In this embodiment, the time lengths of the first preset time and the second preset time can be set according to actual needs, and no further limitation is made here. Preferably, the first preset time is shorter than the second preset time . For example, the above-mentioned first preset time is 1S-2S, and the above-mentioned second preset time is 2S-5S. Hereinafter, the first preset time is 2S, and the second preset time is 3S as an example for detailed description. Specifically, when producing water, the first water inlet electromagnetic valve 21 can be controlled to open for 3 seconds, then the first water inlet electromagnetic valve 21 can be controlled to close for 2 seconds, and then the first water inlet electromagnetic valve 21 can be controlled to open for 3 seconds, so Continue to circulate until the end of water production.

Further, based on the above-mentioned embodiment, in this embodiment, the wastewater discharge control method of the above-mentioned reverse osmosis water purification system also includes:

Step S20, detecting the concentration of total dissolved substances in water;

Step S30, adjusting the opening of the waste water valve according to the detected concentration.

In this embodiment, the concentration of total soluble substances in the above water is TDS, specifically, the detector in the prior art can be used to detect the size of the TDS value, and then adjust the opening of the waste water valve 22 according to the detected TDS value . When the TDS value is larger, the opening of the waste water valve is also larger. Specifically, classification can be performed, and the opening of the waste water valve 22 can be determined according to the interval to which the TDS value belongs. It should be noted that, in this embodiment, increasing the opening of the waste water valve 22 refers to increasing the outlet flow of the waste water valve 22 under the same water pressure. Since the concentration of total dissolved substances in the water body is detected and the opening of the waste water valve 22 is adjusted according to the detected concentration, the discharge of waste water is effectively controlled according to the water quality.

The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process conversion made by using the description of the present invention and the contents of the accompanying drawings, or directly or indirectly used in other related technical fields , are all included in the scope of patent protection of the present invention in the same way.

Claims (10)

1. a reverse osmosis purified water system, is characterized in that, described reverse osmosis purified water system comprises strainer, wastewater discharge pipe and controller, is provided with reverse osmosis membrane filter element and described strainer comprises the waste discharge mouth of a river in described strainer; Described wastewater discharge pipe is connected with the described waste discharge mouth of a river, and described wastewater discharge pipe is provided with the first entering water electromagnetic valve and wastewater valve; Described reverse osmosis purified water system is under water state processed, and described controller controls described first entering water electromagnetic valve intermittently starting.

2. reverse osmosis purified water system as claimed in claim 1, is characterized in that, described controller specifically for: when described first entering water electromagnetic valve close the time length be greater than the first preset time time, control described first entering water electromagnetic valve and open; When described first entering water electromagnetic valve is greater than the second preset time in the unlatching time length, controls described first entering water electromagnetic valve and close.

3. reverse osmosis purified water system as claimed in claim 2, it is characterized in that, described first preset time is 1S ~ 2S, and described second preset time is 2S ~ 5S.

4. reverse osmosis purified water system as claimed in claim 1, it is characterized in that, described reverse osmosis purified water system also comprises water shoot, and described water shoot is connected with the described waste discharge mouth of a river, and described water shoot is provided with the second entering water electromagnetic valve.

5. reverse osmosis purified water system as claimed in claim 1, it is characterized in that, described reverse osmosis purified water system also comprises the detector of the concentration for detecting total dissolved matter in water, the aperture of wastewater valve described in the concentration adjustment that described controller detects according to described detector.

6. the reverse osmosis purified water system as described in any one of claim 1 to 5, is characterized in that, described reverse osmosis purified water system also comprises topping-up pump, and the feed-water end of described topping-up pump is connected with running water pipe, and strainer described in water side connects.

7. a discharge of wastewater control method for reverse osmosis purified water system, is characterized in that, described reverse osmosis purified water system is reverse osmosis purified water system according to claim 1, and the discharge of wastewater control method of described reverse osmosis purified water system comprises:

When reverse osmosis purified water system is under water state processed, control described first entering water electromagnetic valve intermittently starting.

8. the discharge of wastewater control method of reverse osmosis purified water system as claimed in claim 7, it is characterized in that, described control first entering water electromagnetic valve intermittently starting comprises:

When described first entering water electromagnetic valve is greater than the first preset time in the closedown time length, controls described first entering water electromagnetic valve and open; When described first entering water electromagnetic valve is greater than the second preset time in the unlatching time length, controls described first entering water electromagnetic valve and close.

9. the discharge of wastewater control method of reverse osmosis purified water system as claimed in claim 8, it is characterized in that, described first preset time is 1S ~ 2S, and described second preset time is 2S ~ 5S.

10. the discharge of wastewater control method of reverse osmosis purified water system as claimed in claim 7, it is characterized in that, the discharge of wastewater control method of described reverse osmosis purified water system also comprises:

Detect the concentration of total dissolved matter in water;

The aperture of wastewater valve according to the concentration adjustment detected.