Water purification structure and water purification system

Abstract

The utility model provides a water purification structure and a water purification system. The water purification structure comprises a water inlet pipeline, a water purification pipeline, a wastewater pipeline and a controller, a first filter unit, an air valve, a booster pump and a second filter unit are sequentially arranged on the water inlet pipeline; the water inlet pipeline and the purified water pipeline are communicated through the second filtering unit; a water purification valve is arranged on the water purification pipeline; a wastewater adjusting unit is arranged on the wastewater pipeline; the air valve and the wastewater adjusting unit are electrically connected with the controller; the controller is used for driving the wastewater adjusting unit to output wastewater from the second filtering unit from the wastewater pipeline when the air valve is opened and the booster pump is in a first preset state; the controller is further used for driving the water purification valve to output purified water from the purified water pipeline when the air valve is closed and the booster pump is in a second preset state. According to the water purification structure provided by the invention, the replacement efficiency of the wastewater is improved, no concentrated water is remained in the wastewater flow channel in the final state, the dialysis phenomenon is avoided, and the effect of the first cup of water is kept.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the field of water purifier treatment, and in particular to a water purification structure and a water purification system. BACKGROUND

[0002] When the water purifier is used to produce water, water molecules penetrate the membrane into the purified water side under the action of an external force, and salt ions are intercepted in the concentrated water side. When standing, the purified water side is sealed and cannot produce water, the purified water on the purified water side cannot penetrate back to the concentrated water side, and salt ions slowly diffuse to the purified water side through dialysis, resulting in an increase in the total dissolved solids (TDS) of the purified water side. When water is taken again, the purified water with high TDS (i.e. stale water) flows out, affecting people's drinking water health, and the greater the concentration difference, the more serious the phenomenon.

[0003] The current industry for reducing the phenomenon of stale water has the following disadvantages: 1) complex structure, the need to increase the water storage device or reflux management, the need to increase the additional electromagnetic valve control; 2) waste of water, the need to flush away the water volume of one membrane shell each time; 3) waiting for water taking time; 4) poor effect, the mixing of high TDS value reflux water and tap water also increases the TDS of raw water; 5) waste of structure space, the space of one membrane element must be placed down; 6) high cost; 7) complex system, the need for multiple water paths to cooperate; 8) large internal and external pressure difference, risk of membrane element pressure bearing capacity, etc. SUMMARY

[0004] The technical problem to be solved by the present disclosure is to overcome the above-mentioned defects existing in the prior art, and to provide a water purification structure and a water purification system.

[0005] The present disclosure solves the above technical problems by the following technical solutions:

[0006] According to a first aspect of the present disclosure, a water purification structure is provided, comprising: a water inlet pipeline, a purified water pipeline, a waste water pipeline and a controller;

[0007] The water inlet pipeline is provided with a first filter unit, an air valve, a booster pump and a second filter unit in sequence along the water inlet direction;

[0008] The water inlet pipeline and the purified water pipeline are connected via the second filter unit;

[0009] The purified water pipeline is provided with a purified water valve;

[0010] The waste water pipeline is provided with a waste water adjusting unit;

[0011] The air valve and the waste water adjusting unit are electrically connected to the controller;

[0012] The controller is configured to drive the wastewater regulating unit to output wastewater from the second filtering unit to the wastewater pipeline when the air valve is opened and the booster pump is in a first preset state.

[0013] The controller is further configured to drive the clean water valve to output clean water from the clean water pipeline when the air valve is closed and the booster pump is in a second preset state.

[0014] Preferably, the clean water structure further comprises a first electromagnetic valve.

[0015] The first electromagnetic valve is arranged on the water inlet pipeline and located between the first filtering unit and the air valve.

[0016] Preferably, the clean water structure further comprises a water inlet valve.

[0017] The water inlet valve is arranged on the water inlet pipeline and located before the first filtering unit.

[0018] Preferably, the clean water structure further comprises a first water quality detecting unit.

[0019] The first water quality detecting unit is arranged on the clean water pipeline and located between the second filtering unit and the clean water valve.

[0020] Preferably, the clean water structure further comprises a high-voltage switch.

[0021] The high-voltage switch is arranged on the clean water pipeline and located between the second filtering unit and the first water quality detecting unit.

[0022] Preferably, the clean water structure further comprises a domestic water outlet pipeline and a water outlet unit.

[0023] The domestic water outlet pipeline is sequentially provided with a second electromagnetic valve and a domestic water valve, and is configured to output domestic water.

[0024] The water outlet unit comprises a first water inlet end, a second water inlet end and a first water outlet end.

[0025] The water inlet end of the domestic water outlet pipeline is communicated with the first filtering unit, and the water outlet end of the domestic water outlet pipeline is communicated with the first water inlet end.

[0026] The water outlet end of the clean water pipeline is communicated with the second water inlet end.

[0027] The water outlet unit is configured to output clean water or domestic water.

[0028] Preferably, the clean water structure further comprises a second water quality detecting unit.

[0029] The second water quality detection unit is arranged on the domestic water outlet pipeline and located between the second electromagnetic valve and the domestic water valve.

[0030] Preferably, the water purification structure further comprises a water flow detection unit.

[0031] The water flow detection unit is arranged on the domestic water outlet pipeline and located between the second electromagnetic valve and the second water quality detection unit.

[0032] Preferably, the wastewater adjusting unit comprises a third electromagnetic valve and an adjustable wastewater valve connected in sequence.

[0033] According to a second aspect of the present disclosure, a water purification system is provided, which comprises the water purification structure according to the first aspect of the present disclosure.

[0034] On the basis of common knowledge in the art, the above-mentioned preferred conditions can be combined arbitrarily, thereby obtaining preferred examples of the present disclosure.

[0035] The positive progress effect of the present disclosure is that:

[0036] The water purification structure provided by the present disclosure is simple. By arranging the air valve and the booster pump, the wastewater adjusting unit is driven to output the wastewater from the second filter unit to the wastewater pipeline in the first preset state, and the water purification valve is driven to output the purified water from the purified water pipeline in the second preset state. By the cooperation of the water purification valve and the different pumps and valves, the pressure inside the membrane is always greater than the pressure outside the membrane, which ensures the diffusion dialysis phenomenon. By arranging the air valve, the wastewater is quickly discharged with minimal water waste, thereby improving the wastewater replacement efficiency. Further, when the user stops using water, the wastewater is replaced by air through the air valve, thereby completely eliminating the dialysis phenomenon. At the same time, by means of air mixed water flushing, circulating soaking, and intermittent flushing, the flushing effect on stubborn dirt in the second filter unit is improved.

[0037] Further, the domestic water in the present disclosure can ensure the water demand of the user, and at the same time, the membrane element can be fully flushed during the process, thereby prolonging the service life of the membrane element on the second filter unit, improving the first cup water condition, and ensuring the stability of the performance of the membrane element. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 A structure schematic diagram of a water purification structure provided by Embodiment 1 of the present disclosure;

[0039] Figure 2 A principle schematic diagram of the water purification structure provided by Embodiment 1 of the present disclosure when working. DETAILED DESCRIPTION

[0040] The present disclosure is further illustrated by the following examples without thereby limiting the present disclosure to the scope of the examples.

[0041] The prefix words such as "first", "second" in the embodiments of the present disclosure are merely used to distinguish different description objects, and have no limiting effect on the position, order, priority, quantity or content of the described objects. The use of prefix words such as ordinal numbers in the embodiments of the present disclosure does not constitute a limitation on the described objects, and the description of the described objects should be seen in the context of the claims or embodiments

[0042] The use of such prefix words should not constitute redundant limitations. In addition, in the description of the embodiments, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0043] Embodiment 1

[0044] As Figure 1 shown, the present embodiment provides a water purification structure, which comprises a water inlet pipeline 100, a purified water pipeline 200, a waste water pipeline 300 and a controller 2;

[0045] Wherein, the water inlet pipeline is sequentially provided with a first filter unit 101, an air valve 102, a booster pump 103 and a second filter unit 104 along the water inlet direction;

[0046] The water inlet pipeline 100 and the purified water pipeline 200 are connected via the second filter unit 104;

[0047] The purified water pipeline 200 is provided with a purified water valve 201;

[0048] The waste water pipeline 300 is provided with a waste water adjusting unit 301;

[0049] The air valve and the waste water adjusting unit are electrically connected with the controller;

[0050] The controller 2 is used to drive the waste water adjusting unit 301 to output the waste water from the second filter unit 104 from the waste water pipeline 300 when the air valve 102 is opened and the booster pump 103 is in a first preset state;

[0051] The controller 2 is also used to drive the purified water valve 201 to output purified water from the purified water pipeline 200 when the air valve 102 is closed and the booster pump 103 is in a second preset state.

[0052] In a specific embodiment, the booster pump in the present disclosure is an adjustable pressure booster pump, that is, the pressure boosting effect of the booster pump can be controlled by adjusting the voltage, so as to realize the required water outlet pressure and water outlet flow when different water outlets are required.

[0053] The second filter unit in the embodiment includes a nanofiltration filter core, wherein the nanofiltration filter core is connected with an adjustable wastewater valve of the wastewater pipeline (i.e., a wastewater adjusting unit), when domestic water is used frequently, the membrane of the nanofiltration filter core is sufficiently flushed, at this time, the recovery rate of the machine when producing purified water can be adjusted to be high, a small amount of wastewater is discharged, and the effect of flushing the membrane by domestic water is reasonably utilized.

[0054] The booster pump in the embodiment is connected with the air valve, when the user finishes taking water, the wastewater in the wastewater channel in the first filter unit and / or the second filter unit is completely discharged through the adjustment of the air valve and the booster pump, so that the concentrated water dialysis phenomenon is isolated, and high-quality purified water is provided.

[0055] In the purified water structure provided by the disclosure, through the setting of the air valve and the booster pump, the wastewater adjusting unit is driven to output the wastewater from the second filter unit from the wastewater pipeline in the first preset state, and the purified water valve is driven to output the purified water from the purified water pipeline in the second preset state, through the starting cooperation of the purified water valve and different pumps and valves, the pressure inside the membrane is always greater than the pressure outside, and the diffusion dialysis phenomenon is ensured; through the setting of the air valve, the wastewater is quickly discharged, and the wastewater replacement efficiency is improved; further, when the user stops taking water, the wastewater is replaced by air through the air valve, and the dialysis phenomenon is completely eliminated; at the same time, through the air mixed water flushing, the circulating soaking, and the intermittent flushing, the flushing effect on the stubborn dirt in the second filter unit is improved.

[0056] The purified water structure in the embodiment further includes a first electromagnetic valve 105; the first electromagnetic valve 105 is arranged on the water inlet pipeline and located between the first filter unit 101 and the air valve 102; the purified water structure in the embodiment further includes a water inlet valve 106; the water inlet valve 106 is arranged on the water inlet pipeline 100, and the water inlet valve 106 is arranged before the first filter unit 101.

[0057] The purified water structure in the embodiment further includes a first water quality detection unit 202; wherein the first water quality detection unit 202 is arranged on the purified water pipeline 200 and located between the second filter unit 104 and the purified water valve 201.

[0058] The purified water structure in the embodiment further includes a high-voltage switch 203; the high-voltage switch 203 is arranged on the purified water pipeline 200 and located between the second filter unit 104 and the first water quality detection unit 202.

[0059] The nanofiltration filter core of the second filtering unit in the embodiment is connected with a high-pressure switch and a purified water valve at the purified water end, wherein the high-pressure switch functions as: when the faucet purified water end is closed, the booster pump continues to provide pressure for the nanofiltration filter core to produce purified water, and when the pressure at the purified water end reaches the threshold value of the high-pressure switch, the operation of the booster pump is stopped to ensure that the purified water end of the nanofiltration filter core is continuously in a positive pressure state and reduce the phenomenon of diffusion dialysis; after the high-pressure switch is disconnected when the threshold value is reached, the high-pressure switch is closed due to the slow reduction of the slow positive pressure of the nanofiltration filter core for a long time, and the booster pump is not controlled to start, and a signal for starting the booster pump again is given through the faucet.

[0060] When the purified water pipeline and the wastewater pipeline no longer discharge water, the internal pressure (purified water end) of the membrane is greater than or equal to the external pressure (wastewater end), which is more conducive to reducing the phenomenon of diffusion dialysis, and the purified water end can also reduce the concentration of the wastewater end by osmotic penetration of water molecules to the wastewater end through pressure, thereby ensuring that the TDS of the first cup of water will not be increased. In addition, after the production of purified water is completed, the concentration of the wastewater end is generally several times higher than that of the purified water end. At this time, by ensuring that the internal pressure (purified water end) is greater than or equal to the external pressure (wastewater end), the concentration of the wastewater end is reduced in time, and the phenomenon of diffusion dialysis is reduced.

[0061] The purified water structure in the embodiment further includes a domestic water outlet pipeline 400 and a water outlet unit 500.

[0062] The second electromagnetic valve 401 and the domestic water valve 402 are sequentially arranged on the domestic water outlet pipeline, and the domestic water outlet pipeline 400 is used for outputting domestic water; the water outlet unit 500 includes a first water inlet end, a second water inlet end and a first water outlet end; the water inlet end of the domestic water outlet pipeline 400 is communicated with the first filtering unit 101, and the water outlet end of the domestic water outlet pipeline 400 is communicated with the first water inlet end; the water outlet end of the purified water pipeline is communicated with the second water inlet end; and the water outlet unit 500 is used for outputting purified water or domestic water.

[0063] In addition, in the embodiment of the disclosure, the time when the domestic water valve and the purified water valve are opened can be timed, when the frequency of using domestic water is greater than the frequency of using purified water, the wastewater ratio of the wastewater valve can be reduced to improve the recovery rate and reduce wastewater discharge; when the frequency of using purified water is greater than the frequency of using domestic water, the opening time of the wastewater valve and the drain valve can be increased to increase the flushing time and relieve the pressure of the membrane.

[0064] In this embodiment, the domestic water outlet pipeline mixes water that has undergone first-stage filtration in the first filtration unit with water that has passed through the nanofiltration membrane of the second filtration unit after being pumped by a booster pump. This ensures that domestic water is available immediately when the faucet is turned on, and the booster pump ensures a sufficiently fast water flow rate, addressing the problem of slow water flow when the raw water pressure is insufficient. Simultaneously, the booster pump operates at a lower rated voltage, ensuring that noise does not affect user experience while continuously flushing the membrane surface with domestic water, effectively mitigating membrane surface damage and extending the membrane element's lifespan.

[0065] The water purification structure in this embodiment also includes a second water quality detection unit 403; the second water quality detection unit 403 is installed on the domestic water outlet pipe 400 and is located between the second solenoid valve 401 and the domestic water valve 402.

[0066] The water purification structure in this embodiment also includes a water flow detection unit 404; the water flow detection unit 404 is installed on the domestic water outlet pipe 400 and is located between the second solenoid valve 401 and the second water quality detection unit 403.

[0067] In one specific implementation, the water flow detection unit is a flow meter, which detects the water flow at the domestic water source and adjusts the target water flow based on the actual flow to improve the user experience.

[0068] In one specific implementation, both the first water quality detection unit and the second water quality detection unit are TDS testing devices (devices for detecting water quality) used to monitor the TDS of water.

[0069] Different TDS testing devices are set up at the purified water end and the domestic water end, respectively. By monitoring the TDS of the two water circuits, a self-learning control function is formed. When the TDS values ​​of the purified water end and the domestic water end are low, the discharge flow of the wastewater valve can be reduced to retain a certain amount of minerals. When the TDS value of the purified water end is low and the TDS value of the domestic water end is high, the discharge flow of the wastewater valve can be increased to reduce the recovery rate and reduce the concentration polarization phenomenon. When the TDS value of the purified water end is high and the TDS value of the domestic water end is low, the opening time of the wastewater valve and the drain valve after water production can be appropriately extended to allow the membrane element to be fully flushed.

[0070] The wastewater regulating unit 301 in this embodiment includes an adjustable wastewater valve 3011 and a third solenoid valve 3012 connected in sequence.

[0071] like Figure 2 As shown, the working principle of the water purification structure of this disclosure is explained below with specific implementation methods:

[0072] In a specific embodiment, when clean water is needed, when the faucet clean water end is opened, the water inlet valve, the first electromagnetic valve, the booster pump, the third electromagnetic valve, and the clean water valve are opened; the air valve, the second electromagnetic valve, the waste water valve, and the domestic water valve are closed, at this time, the faucet outputs clean water; after the faucet clean water end is closed, the clean water valve is closed, the clean water process continues, after the high-pressure switch reaches the threshold, the waste water valve and the air valve are opened, the first electromagnetic valve and the water inlet valve are closed, the concentrated water in the membrane is quickly discharged by using air, and then the booster pump is closed; the threshold of the high-pressure switch keeps the filter element clean water end of the second filtering unit at a positive pressure, reduces dialysis, prevents the faucet water from flowing back, and reduces the waiting time for water output; the concentrated water is discharged by using the air switch, so that the high-concentration waste water after the water preparation is quickly discharged, the waste water is no longer slowly replaced by tap water, the flushing efficiency and effect are improved, and the water saving effect is achieved.

[0073] After the booster pump is closed, the water inlet valve and the first electromagnetic valve are reopened, the air valve is closed, and tap water is discharged from the waste water outlet for 5-10s by using the water pressure of the tap water, so that the membrane surface is flushed; then the water inlet valve is closed, the first electromagnetic valve, the waste water valve, and the third electromagnetic valve are closed after a certain time, and the water circuit stops running; the tap water is used to flush again, so as to dilute and flush, and the last switch sequence can ensure that the internal pressure is greater than the external pressure, and the concentration difference phenomenon is reduced, so that the diffusion dialysis phenomenon is greatly reduced; after the user stops taking water, the air valve, the booster pump, the adjustable waste water valve, and the third electromagnetic valve are opened, and the other valves are closed, so that all the waste water on the concentrated water side of the filter element is discharged; on the one hand, the continuous action is prevented from affecting the use of the customer, and on the other hand, the dialysis phenomenon is completely eliminated by using air to replace the concentrated water, and the first cup of water effect is maintained.

[0074] When domestic water is needed, when the faucet domestic water end is opened, the water inlet valve, the first electromagnetic valve, the second electromagnetic valve, the booster pump (the booster pump is operated at low power at this time), the adjustable waste water valve, and the domestic water valve are opened; the air valve, the clean water valve, and the third electromagnetic valve are closed, at this time, the faucet outputs domestic water (the domestic water is mixed water of first-stage filtered water and membrane pre-flushing water); in this way, when the domestic water is output, the booster pump is operated at low power, on the one hand, the domestic water is boosted and the water volume is increased, and on the other hand, the noise is controlled, and the customer experience is not affected; meanwhile, the membrane surface is continuously and for a long time, and the diaphragm is fully flushed, so that even if the recovery rate is high, the membrane element is fully flushed, and the service life of the membrane element can be greatly prolonged.

[0075] When the faucet domestic water end is closed, the first electromagnetic valve, the second electromagnetic valve, and the domestic water valve are closed; then the air valve, the waste water valve, and the third electromagnetic valve are opened, and the other valves are closed, so that all the waste water on the concentrated water side of the filter element is discharged; then all the electrical devices are closed, and the water circuit stops running. It is ensured that there is no concentrated water residue in the waste water flow channel in the last state, the dialysis phenomenon is completely eliminated, and the first cup of water effect is maintained.

[0076] When not used for a long time or manually flushing the faucet, open the water inlet valve, the first electromagnetic valve, the booster pump, the air valve, the adjustable wastewater valve and the third electromagnetic valve; use the mixed water of tap water and air to boost flushing; after a period of time, close the water inlet valve and the third electromagnetic valve, open the second electromagnetic valve, the booster pump becomes a low-power state, and circulates for a period of time; then close the first electromagnetic valve and the second electromagnetic valve, open the air valve and the third electromagnetic valve; drain the wastewater; then close the air valve, open the water inlet valve and the first electromagnetic valve, continue to flush for a certain period of time, and repeat the above actions for a certain number of times, such as 5 times; finally, open the air valve, the booster pump, the adjustable wastewater valve and the third electromagnetic valve, and close the other valves, to drain all the wastewater on the concentrated water side of the filter element; through different ways such as air mixed water, circulation, soaking and intermittent flushing, the stubborn dirt generated in the wastewater flow channel of the membrane element due to long-term non-operation or long-term use of the machine is solved, thereby effectively improving the wastewater flow channel environment and improving the flushing efficiency and effect.

[0077] Embodiment 2

[0078] The water purification system provided in the embodiment includes the water purification structure in Embodiment 1.

[0079] In the water purification system provided by the present disclosure, the air valve and the booster pump are arranged to drive the wastewater adjusting unit to output the wastewater from the second filtering unit to the wastewater pipeline in the first preset state, and to drive the water purification valve to output the purified water from the purified water pipeline in the second preset state, so that the pressure inside the membrane is always greater than the pressure outside through the cooperation of the water purification valve and different pumps and valves, and the phenomenon of diffusion dialysis is ensured; the air valve is arranged to quickly drain the wastewater and improve the wastewater replacement efficiency; further, when the user stops using water, the air valve is used to replace the wastewater with air to completely eliminate the dialysis phenomenon; at the same time, the flushing effect on the stubborn dirt in the second filtering unit is improved through air mixed water flushing, circulation soaking and intermittent flushing.

[0080] Further, the domestic water in the present disclosure passes through the filtering surface of the diaphragm, which not only ensures the water demand of the user, but also fully flushes the membrane element in the process, thereby prolonging the service life of the membrane element on the second filtering unit, improving the first cup water condition and ensuring the stability of the performance of the membrane element.

[0081] Although the specific embodiments of the present disclosure are described above, those skilled in the art should understand that this is only an example, and the protection scope of the present disclosure is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present disclosure, and these changes and modifications all fall within the protection scope of the present disclosure.

Claims

1. A water purifying structure, characterized by comprising: The water purification structure comprises a water inlet pipeline, a water purification pipeline, a waste water pipeline and a controller. The water inlet pipeline is sequentially provided with a first filter unit, an air valve, a booster pump and a second filter unit along a water inlet direction. The water inlet pipeline and the water purification pipeline are connected via the second filter unit. The water purification pipeline is provided with a water purification valve. The waste water pipeline is provided with a waste water adjusting unit. The air valve and the waste water adjusting unit are electrically connected with the controller. The controller is configured to drive the waste water adjusting unit to output waste water from the second filter unit to the waste water pipeline when the air valve is opened and the booster pump is in a first preset state. The controller is further configured to drive the water purification valve to output purified water from the water purification pipeline when the air valve is closed and the booster pump is in a second preset state.

2. The water purifying structure according to claim 1, wherein The water purification structure further comprises a first electromagnetic valve. The first electromagnetic valve is arranged on the water inlet pipeline and located between the first filter unit and the air valve.

3. The water purifying structure according to claim 1 or 2, characterized by The water purification structure further comprises a water inlet valve. The water inlet valve is arranged on the water inlet pipeline and located before the first filter unit.

4. The water purifying structure according to claim 1, wherein The water purification structure further comprises a first water quality detection unit. The first water quality detection unit is arranged on the water purification pipeline and located between the second filter unit and the water purification valve.

5. The water purification structure according to claim 4, characterized by The water purification structure further comprises a high-voltage switch. The high-voltage switch is arranged on the water purification pipeline and located between the second filter unit and the first water quality detection unit.

6. The water purification structure according to claim 1, wherein The water purification structure further comprises a domestic water outlet pipeline and a water outlet unit. The domestic water outlet pipeline is sequentially provided with a second electromagnetic valve and a domestic water valve, and is configured to output domestic water. The water outlet unit comprises a first water inlet end, a second water inlet end and a first water outlet end. The water inlet end of the domestic water outlet pipeline is connected with the first filter unit, and the water outlet end of the domestic water outlet pipeline is connected with the first water inlet end. The water outlet end of the water purification pipeline is connected with the second water inlet end. The water outlet unit is configured to output purified water or domestic water.

7. The water purification structure according to claim 6, characterized by The water purification structure further comprises a second water quality detection unit. The second water quality detection unit is arranged on the domestic water outlet pipeline and located between the second electromagnetic valve and the domestic water valve.

8. The water purification structure according to claim 7, characterized by The water purification structure further comprises a water flow detection unit. The water flow detection unit is arranged on the domestic water outlet pipeline and located between the second electromagnetic valve and the second water quality detection unit.

9. The water purification structure of claim 1, wherein The waste water adjusting unit comprises a waste water valve and a third electromagnetic valve connected in sequence.

10. A water purification system characterized by, The water purification system comprises the water purification structure according to any one of claims 1-9.

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