An external intelligent water quality blending system and method thereof

Abstract

The present invention relates to the field of water purification, and discloses an external intelligent water quality blending system and method thereof, comprising a pure water tank, a clean water tank, a first TDS sensor, a second TDS sensor, a third TDS sensor, a first flow meter, a second flow meter, a second water inlet solenoid valve, a third water inlet solenoid valve and a first mixing water tank, wherein the pure water tank is connected to the first mixing water tank through a second pipeline, the first TDS sensor, the first flow meter and the second water inlet solenoid valve are installed on the second pipeline, the clean water tank is connected to the first mixing water tank through a third pipeline, the second TDS sensor, the second flow meter and the third water inlet solenoid valve are installed on the third pipeline, and the third TDS sensor is installed in the first mixing water tank. The system uses the second water inlet solenoid valve, the third water inlet solenoid valve, the first flow meter and the second flow meter to accurately measure the water flow, so that the system can accurately blend the mixed water with the required TDS value.

Description

Technical Field

[0001] The present invention relates to the field of water purification, and in particular to an external intelligent water blending system and a method thereof. Background Art

[0002] With the improvement of living standards, people's demand for drinking water is becoming more diversified, and they are drinking water more scientifically. The demand for water quality is completely different for different usage scenarios. For example, making tea / coffee or some special scenarios requires water of different water qualities.

[0003] There are also devices for blending water quality in the prior art, for example, application number: 201110121638.7, which discloses an automatic water quality adjustment device, in which two water channels are controlled by electromagnetic control valves, and the mixed water flowing into the container is detected by a water quality sensor. The water quality blended by this device has a large deviation and cannot be accurately controlled. Summary of the invention

[0004] Aiming at the shortcoming of large error in blending water quality in the prior art, the present invention provides an external intelligent water quality blending system and method thereof.

[0005] In order to solve the above technical problems, the present invention is solved by the following technical solutions:

[0006] An external intelligent water quality blending system comprises a pure water tank, a clean water tank, a third TDS sensor, a second water inlet solenoid valve, a third water inlet solenoid valve and a first mixing water tank, wherein the pure water tank is connected to the first mixing water tank through a second pipe, the second water inlet solenoid valve is installed on the second pipe, the clean water tank is connected to the first mixing water tank through a third pipe, the third water inlet solenoid valve is installed on the third pipe, the third TDS sensor is installed in the first mixing water tank, and further comprises a first TDS sensor, a second TDS sensor, a first flow meter and a second flow meter; the first TDS sensor and the first flow meter are both installed on the second pipe, the second water inlet solenoid valve is arranged between the first flow meter and the first mixing water tank; the second TDS sensor and the second flow meter are both installed on the third pipe, and the third water inlet solenoid valve is arranged between the second flow meter and the first mixing water tank.

[0007] This system uses the first TDS sensor, the second TDS sensor, the second water inlet solenoid valve, the third water inlet solenoid valve, the first flow meter and the second flow meter to accurately control the TDS value of the water quality in the second pipeline and the TDS value of the water quality in the third pipeline. When the two water flows into the first mixing tank, the third TDS sensor can accurately measure the TDS value of the mixed water in the first mixing tank, and the first flow meter and the second flow meter can measure the flow rate of pure water and clean water, so that the system can accurately blend the mixed water with the required TDS value.

[0008] Preferably, it also includes a first water pump and a second water pump, the first water pump is installed on the second pipeline, and the first water pump is arranged between the pure water tank and the first flow meter; the second water pump is installed on the third pipeline, and the second water pump is arranged between the pure water tank and the second flow meter.

[0009] The first pumping pump can pump the pure water in the pure water tank into the first mixing water tank, and the second pumping pump can pump the clean water in the clean water tank into the first mixing water tank.

[0010] Preferably, the first TDS sensor is arranged between the pure water tank and the first water pump; the second TDS sensor is arranged between the pure water tank and the second water pump.

[0011] The first TDS sensor can detect the TDS value of the pure water flowing into the first mixing water tank in time, and the second TDS sensor can detect the TDS value of the clean water flowing into the first mixing water tank in time.

[0012] Preferably, it also includes a first liquid level sensor, a second liquid level sensor and a third liquid level sensor, the first liquid level sensor is installed in the pure water tank, the second liquid level sensor is installed in the clean water tank, and the third liquid level sensor is installed in the first mixing water tank.

[0013] The third liquid level sensor can accurately measure the amount of mixed water, and the first liquid level sensor and the second liquid level sensor are used to detect the water levels in the pure water tank and the clean water tank respectively.

[0014] Preferably, the system further comprises a first water inlet solenoid valve, a fourth water inlet solenoid valve, a second mixing water tank and a fourth TDS sensor, wherein one end of the first water inlet solenoid valve is connected to the first flow meter and the other end thereof is connected to the second mixing water tank; one end of the fourth water inlet solenoid valve is connected to the second flow meter and the other end thereof is connected to the second mixing water tank; and the fourth TDS sensor is installed in the second mixing water tank. The system is provided with a double mixing water tank, so that the system can quickly blend two mixed waters with different TDS values.

[0015] Preferably, the device further comprises a fourth liquid level sensor, which is installed in the second mixing water tank and is used to detect the water level in the second mixing water tank.

[0016] A water blending method includes an external intelligent water blending system, and the specific blending method is as follows:

[0017] Step a, the input device inputs the required TDS value as TDS3, the input required water volume is A ml, the controller starts the first pump and the first flow meter, the pure water in the pure water tank is pumped into the second pipeline by the first pump, the first TDS sensor detects the TDS value of the pure water in the second pipeline as TDS1, and the first flow meter detects the output of pure water as B ml;

[0018] Step b, simultaneously with step b, the controller starts the second pump and the second flow meter, the clean water in the clean water tank is pumped into the third pipe by the second pump, the second TDS sensor detects the TDS value of the clean water in the third pipe as TDS2, and the second flow meter detects the water output of the clean water as C ml;

[0019] Step c, when there is no water in the first mixing water tank, the TDS value of the first mixing water tank to be blended is set to TDS3, and the first mixing water tank performs rough blending, and the TDS3 value of the mixed water in the first mixing water tank is obtained by the blending formula: (TDS3-TDS1): (TDS2-TDS3) = B: C, and the mixing ratio of pure water and clean water is blended according to B: C and injected into the first mixing water tank; when the mixed water in the first mixing water tank reaches the required water volume D ml, D < A, the first pumping pump and the second pumping pump are stopped, thereby stopping the injection of pure water and clean water into the first mixing water tank;

[0020] Step d, finely blend the remaining (AD) ml of mixed water, let the first mixing tank stand for a period of time, the third TDS sensor detects a stable TDS value of TDS4, set the TDS value of the remaining (AD) ml of mixed water to TDS5, and obtain the TDS5 value through the blending formula: (TDS3-TDS5): (TDS4-TDS3) = D: A; then calculate the mixing ratio E: F of pure water and clean water in the remaining ml of mixed water, E: F = (TDS5-TDS1): (TDS2-TDS5);

[0021] Step e, when there is water in the first mixing water tank, blend according to step d.

[0022] Preferably, in steps c and d, when the TDS value fed back by the first TDS sensor and the second TDS sensor differs by 10% from the TDS value at the beginning of blending, the blending is suspended and the first TDS sensor and the second TDS sensor are recalibrated.

[0023] The present invention has significant technical effects due to the adoption of the above technical solution:

[0024] This system uses the first TDS sensor, the second TDS sensor, the second water inlet solenoid valve, the third water inlet solenoid valve, the first flow meter and the second flow meter to accurately control the TDS value of the water quality in the second pipeline and the TDS value of the water quality in the third pipeline. When the two water flows into the first mixing tank, the third TDS sensor can accurately measure the TDS value of the mixed water in the first mixing tank, and the first flow meter and the second flow meter can measure the flow rate of pure water and clean water, so that the system can accurately blend the mixed water with the required TDS value. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1It is a schematic diagram of the framework structure of the present invention.

[0026] The names of the parts indicated by the numerical labels in the above drawings are as follows: among them, 10—pure water tank, 11—clean water tank, 12—third TDS sensor, 13—second water inlet solenoid valve, 14—third water inlet solenoid valve, 15—first mixing water tank, 16—second pipeline, 17—third pipeline, 18—first TDS sensor, 19—second TDS sensor, 20—first flow meter, 21—second flow meter, 22—first water pump, 23—second water pump, 24—first liquid level sensor, 25—second liquid level sensor, 26—third liquid level sensor, 27—first water inlet solenoid valve, 28—fourth water inlet solenoid valve, 29—second mixing water tank, 30—fourth TDS sensor, 31—fourth liquid level sensor. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0028] Example 1

[0029] An external intelligent water quality blending system, such as Figure 1As shown, it includes a pure water tank 10, a clean water tank 11, a third TDS sensor 12, a second water inlet solenoid valve 13, a third water inlet solenoid valve 14 and a first mixing water tank 15. The pure water tank 10 is connected to the first mixing water tank 15 through a second pipe 16. The second water inlet solenoid valve 13 is installed on the second pipe 16. The second water inlet solenoid valve 13 is used to control the flow of pure water in the second pipe 16. The clean water tank 11 is connected to the first mixing water tank 15 through a third pipe 17. The third water inlet solenoid valve 14 is installed on the third pipe 17. The third water inlet solenoid valve 14 is used to control the flow of clean water in the third pipe 17. The third TDS sensor 12 is installed in the first mixing water tank 15 and is used to detect the TDS value of the mixed water in the first mixing water tank 15. The blending system also includes a first TDS sensor 18, a second TDS sensor 19, a first flow meter 20, and a second flow meter 21; the first TDS sensor 18 and the first flow meter 20 are both installed on the second pipe 16, the first TDS sensor 18 is used to detect the TDS value of the pure water in the second pipe 16, and the first flow meter 20 can accurately measure the pure water flow rate, so that the system can accurately blend the mixed water with a specific TDS value. The second water inlet solenoid valve 13 is arranged between the first flow meter 20 and the first mixing water tank 15, and the second water inlet solenoid valve 13 is close to the first mixing water tank 15, so that there will not be too much water left in the pipe between the two, and the TDS value of the mixed water in the first mixing water tank 15 is guaranteed. The second TDS sensor 19 and the second flow meter 21 are both installed on the third pipe 17. The second TDS sensor 19 is used to detect the TDS value of the clean water in the third pipe 17. The second flow meter 21 can accurately measure the clean water flow rate, which is convenient for the system to accurately blend mixed water with a specific TDS value. The third water inlet solenoid valve 14 is arranged between the second flow meter 21 and the first mixing water tank 15. The third water inlet solenoid valve 14 is close to the first mixing water tank 15, so that not too much water will remain in the pipe between the two.

[0030] It also includes a first water pump 22 and a second water pump 23. The first water pump 22 is installed on the second pipeline 16 and pumps the pure water in the pure water tank 10 into the first mixing water tank 15. The first water pump 22 is arranged between the pure water tank 10 and the first flow meter 20, so that the first water pump 22 can timely extract the pure water in the pure water tank 10; the second water pump 23 is installed on the third pipeline 17 and pumps the clean water in the clean water tank 11 into the first mixing water tank 15. The second water pump 23 is arranged between the clean water tank 11 and the second flow meter 21, so that the second water pump 23 can timely extract the clean water in the clean water tank 11.

[0031] The first TDS sensor 18 is disposed between the pure water tank 10 and the first pump 22, and the first TDS sensor 18 can timely measure the TDS value of the pure water flowing out of the pure water tank 10. The second TDS sensor 19 is disposed between the clean water tank 11 and the second pump 23, and the second TDS sensor 19 can timely measure the TDS value of the clean water flowing out of the clean water tank 11.

[0032] It also includes a first liquid level sensor 24, a second liquid level sensor 25 and a third liquid level sensor 26. The first liquid level sensor 24 is installed in the pure water tank 10 and is used to detect the pure water level therein. The second liquid level sensor 25 is installed in the clean water tank 11 and is used to detect the clean water level therein. The third liquid level sensor 26 is installed in the first mixing water tank 15 and is used to detect the mixed water level therein.

[0033] Example 2

[0034] The features of Example 2 are basically the same as those of Example 1, except that Example 2 also includes a first water inlet solenoid valve 27, a fourth water inlet solenoid valve 28, a second mixing water tank 29 and a fourth TDS sensor 30. One end of the first water inlet solenoid valve 27 is connected to the first flow meter 20, and the other end thereof is connected to the second mixing water tank 29. The first water inlet solenoid valve 27 is used to control the flow of water into the second mixing water tank 29; one end of the fourth water inlet solenoid valve 28 is connected to the second flow meter 21, and the other end thereof is connected to the second mixing water tank 29; the fourth TDS sensor 30 is installed in the second mixing water tank 29, and the fourth water inlet solenoid valve 28 is used to control the flow of water into the second mixing water tank 29.

[0035] The fourth liquid level sensor 31 is also included. The fourth liquid level sensor 31 is installed in the second mixing water tank 29 and is used to detect the water level of the mixed water therein.

[0036] Example 3

[0037] A water blending method includes the external intelligent water blending system in Example 1, and the specific blending method is as follows:

[0038] Step a, the input device inputs the required TDS value as TDS3, the input required water volume is A ml, the controller starts the first pump 22 and the first flow meter 20, the pure water in the pure water tank 10 is pumped into the second pipe 16 by the first pump 22, the first TDS sensor 18 detects the TDS value of the pure water in the second pipe 16 as TDS1, and the first flow meter 20 detects the output of pure water as B ml;

[0039] Step b, carried out simultaneously with step 1, the controller starts the second pump 23 and the second flow meter 21, the clean water in the clean water tank 11 is pumped into the third pipe 17 by the second pump 23, the second TDS sensor detects the TDS value of the clean water in the third pipe 17 as TDS2, and the second flow meter 21 detects the water output of the clean water as C ml;

[0040] Step c, when there is no water in the first mixing water tank 15, the TDS value of the first mixing water tank 15 to be blended is set to TDS3, and the first mixing water tank 15 performs rough blending, and the TDS3 value of the mixed water in the first mixing water tank 15 is obtained by the blending formula (TDS3-TDS1): (TDS2-TDS3)=B:C, and the mixing ratio of pure water and clean water is blended according to B:C and injected into the first mixing water tank 15; when the mixed water in the first mixing water tank 15 reaches the required water volume D ml, D<A, the first pumping pump 22 and the second pumping pump 23 are stopped, thereby stopping the injection of pure water and clean water into the first mixing water tank 15;

[0041] Step d, finely blend the remaining (AD) ml of mixed water, let the first mixing tank 15 stand for a period of time, the third TDS sensor detects a stable TDS value of TDS4, and sets the TDS value of the remaining (AD) ml of mixed water to TDS5, and obtains the TDS5 value through the blending formula (TDS3-TDS5): (TDS4-TDS3)=D:A; then calculate the mixing ratio E:F of pure water and clean water in the remaining (AD) ml of mixed water, E:F=(TDS5-TDS1):(TDS2-TDS5);

[0042] Step e: when there is water in the first mixing water tank 15, blending is performed according to step d.

[0043] In steps c and d, when the TDS values ​​fed back by the first TDS sensor and the second TDS sensor differ by 10% from the TDS values ​​at the beginning of blending, the blending is suspended and the first TDS sensor and the second TDS sensor are recalibrated.

[0044] In conclusion, the above is only a preferred embodiment of the present invention, and all equivalent changes and modifications made according to the scope of the patent application of the present invention should fall within the scope of the patent of the present invention.

Claims

1. An external intelligent water quality blending system, comprising a pure water tank (10), a clean water tank (11), a third TDS sensor (12), a second water inlet solenoid valve (13), a third water inlet solenoid valve (14) and a first mixing water tank (15), wherein the pure water tank (10) is connected to the first mixing water tank (15) via a second pipe (16), the second water inlet solenoid valve (13) is mounted on the second pipe (16), the clean water tank (11) is connected to the first mixing water tank (15) via a third pipe (17), the third water inlet solenoid valve (14) is mounted on the third pipe (17), and the third TDS sensor (12) is mounted in the first mixing water tank (15), characterized in that: The device further comprises a first TDS sensor (18), a second TDS sensor (19), a first flow meter (20) and a second flow meter (21); the first TDS sensor (18) and the first flow meter (20) are both mounted on the second pipeline (16), and the second water inlet solenoid valve (13) is arranged between the first flow meter (20) and the first water mixing tank (15); the second TDS sensor (19) and the second flow meter (21) are both mounted on the third pipeline (17), and the third water inlet solenoid valve (14) is arranged between the second flow meter (21) and the first water mixing tank (15); It also comprises a first liquid level sensor (24), a second liquid level sensor (25) and a third liquid level sensor (26), wherein the first liquid level sensor (24) is installed in the pure water tank (10), the second liquid level sensor (25) is installed in the clean water tank (11), and the third liquid level sensor (26) is installed in the first mixing water tank (15); It also comprises a first water inlet solenoid valve (27), a fourth water inlet solenoid valve (28), a second mixing water tank (29) and a fourth TDS sensor (30); one end of the first water inlet solenoid valve (27) is connected to the first flow meter (20), and the other end thereof is connected to the second mixing water tank (29); one end of the fourth water inlet solenoid valve (28) is connected to the second flow meter (21), and the other end thereof is connected to the second mixing water tank (29); and the fourth TDS sensor (30) is installed in the second mixing water tank (29); It also includes a fourth liquid level sensor (31), which is installed in the second mixing water tank (29).

2. An external intelligent water blending system according to claim 1, characterized in that: The invention also comprises a first water pump (22) and a second water pump (23), wherein the first water pump (22) is installed on the second pipeline (16), and the first water pump (22) is arranged between the pure water tank (10) and the first flow meter (20); and the second water pump (23) is installed on the third pipeline (17), and the second water pump (23) is arranged between the pure water tank (11) and the second flow meter (21).

3. An external intelligent water blending system according to claim 2, characterized in that: The first TDS sensor (18) is arranged between the pure water tank (10) and the first water pump (22); and the second TDS sensor (19) is arranged between the pure water tank (11) and the second water pump (23).

4. A water blending method, characterized in that: The intelligent water quality blending system comprising any one of claims 1 to 3, wherein the specific blending method is as follows: Step a, the input device inputs the required TDS value as TDS3, the input required water volume as A ml, the controller starts the first pump (22) and the first flow meter (20), the pure water in the pure water tank (10) is pumped into the second pipe (16) by the first pump (22), the first TDS sensor (18) detects the TDS value of the pure water in the second pipe (16) as TDS1, and the first flow meter (20) detects the output volume of the pure water as B ml; Step b is performed simultaneously with step (1), the controller starts the second pump (23) and the second flow meter (21), the clean water in the clean water tank (11) is pumped into the third pipe (17) by the second pump (23), the second TDS sensor detects the TDS value of the clean water in the third pipe (17) as TDS2, and the second flow meter (21) detects the water output of the clean water as C ml; Step c, when there is no water in the first mixing water tank (15), the TDS value of the first mixing water tank (15) to be blended is set to TDS3, and the first mixing water tank (15) performs rough blending, and the TDS3 value of the mixed water in the first mixing water tank (15) is obtained by the blending formula (TDS3-TDS1): (TDS2-TDS3) = B:C, and the pure water and clean water are blended according to the mixing ratio of B:C and injected into the first mixing water tank (15); when the mixed water in the first mixing water tank (15) reaches the required water volume D ml, D < A, the first pumping pump (22) and the second pumping pump (23) are stopped, thereby stopping the injection of pure water and clean water into the first mixing water tank (15); Step d, finely blending the remaining (AD) ml of mixed water, leaving the first mixing tank (15) to stand for a period of time, the third TDS sensor detecting a stable TDS value of TDS4, setting the TDS value of the remaining (AD) ml of mixed water to TDS5, and obtaining the TDS5 value by the blending formula (TDS3-TDS5): (TDS4-TDS3)=D:A; and then calculating the mixing ratio E:F of pure water and clean water in the remaining (AD) ml of mixed water, E:F=(TDS5-TDS1):(TDS2-TDS5); Step e, when there is water in the first mixing water tank (15), blending is performed according to step d.

5. A water blending method according to claim 4, characterized in that: In steps c and d, when the TDS values ​​fed back by the first TDS sensor and the second TDS sensor differ by 10% from the TDS values ​​at the beginning of blending, the blending is suspended and the first TDS sensor and the second TDS sensor are recalibrated.

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