Water purification system

Abstract

The utility model discloses a water purification system relates to water treatment technical field, and the water purification system includes: water inlet end, filtration unit, filtration unit has water inlet, water purification and wastewater port, first waterway, the import of first waterway can communicate with water inlet end, and the export of first waterway can communicate with water inlet, second waterway, be provided with scale inhibition solution generating unit on second waterway, and the export of scale inhibition solution generating unit can communicate with water inlet, and scale inhibition solution generating unit includes accommodating chamber and solid scale inhibitor that are set in accommodating chamber, and accommodating chamber can load water to make solid scale inhibitor dissolve in water and form scale inhibition solution, fluid output adjusting mechanism, and fluid output adjusting mechanism can adjust the amount of scale inhibition solution in unit time and flow into water inlet. The application can solve the problem that the large flow commercial water purification system is not economic and inconvenient in the use process under the premise of guaranteeing the service life of the filter membrane.

Description

Technical Field

[0001] This utility model relates to the field of water treatment technology, and in particular to a water purification system. Background Technology

[0002] In the daily operations of medium and large-sized private enterprises, factories, hospitals, and government agencies, their own canteens have continuous and diverse needs for purified water in processes such as washing rice and vegetables, steaming, cooking, and dishwashers. Commercial water purification and supply systems are key equipment designed to meet these needs. These systems exhibit significant high flow rate characteristics during operation, with purified water flow rates typically reaching several liters per second, and in some scenarios even requiring 10 liters per second, 20 liters per second, or more, to ensure efficient operation of various water-using processes.

[0003] However, existing high-flow commercial water purification systems face the problem of short lifespan of the filter membranes within the filter units during long-term use, which significantly affects the stable operation and operating costs of the system. To extend the lifespan of the filter membranes, the industry commonly adopts the method of adding scale inhibitors to the raw water to reduce clogging and wear of the filter membranes by inhibiting scale formation.

[0004] The method used in household low-flow water purification systems, where solid scale inhibitors are passed through the raw water to dissolve the scale inhibitors, is unsuitable for commercial water purification systems. This is because, at high flow rates, the amount of scale inhibitors in the raw water cannot reach the target level. Therefore, the more common method for adding scale inhibitors is to directly pump liquid scale inhibitors (i.e., scale inhibitor solution) into the raw water supplied to the filtration unit using a micro-flow pump to achieve the desired scale inhibitor content. However, this method has significant limitations: firstly, it requires a large container to hold the scale inhibitor solution, increasing the system's footprint and hindering efficient space utilization; secondly, when the scale inhibitor solution in the container is running low, it needs to be replenished regularly, which is not only cumbersome and increases maintenance costs, but also may affect the scale inhibition effect and shorten the filter membrane's lifespan if replenishment is not timely.

[0005] Therefore, to address the aforementioned problems with the existing methods of adding scale inhibitors in high-flow-rate commercial water purification systems, a better technical solution is urgently needed to improve the system's economy, convenience, and stability. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to provide a water purification system that can solve the problems of uneconomical and inconvenient use of large-flow commercial water purification systems while ensuring the life of the filter membrane.

[0007] The specific technical solution of this utility model embodiment is as follows:

[0008] A water purification system, the water purification system comprising:

[0009] Water inlet end;

[0010] The filtration unit has a water inlet, a clean water outlet, and a wastewater outlet;

[0011] The first waterway has an inlet that can be connected to the water inlet end and an outlet that can be connected to the water inlet.

[0012] The second water channel is equipped with a scale inhibitor solution generating unit. The outlet of the scale inhibitor solution generating unit can be connected to the inlet. The scale inhibitor solution generating unit includes a receiving chamber and a solid scale inhibitor disposed in the receiving chamber. The receiving chamber can be filled with water so that the solid scale inhibitor dissolves in the water to form a scale inhibitor solution.

[0013] A fluid output regulating mechanism is provided, which can regulate the amount of scale inhibitor solution flowing into the inlet per unit time.

[0014] Preferably, the first waterway and the second waterway are connected in parallel, and the inlet of the second waterway can be connected to the water inlet.

[0015] Preferably, the inlet of the second waterway can be connected to the wastewater outlet.

[0016] Preferably, the inlet of the second water passage can be connected to the clean water outlet.

[0017] Preferably, the water purification system has a first working mode. In the first working mode, the water inlet, the wastewater outlet, or the purified water outlet is in a connected state or intermittently connected with the water inlet of the filter unit through the fluid output regulating mechanism and the second water path. The water inlet is in a connected state with the water inlet of the filter unit through the first water path.

[0018] Preferably, the fluid output regulating mechanism allows the scale inhibitor solution to be input into the filtration unit together with the water output from the first water path at a first preset amount per unit time;

[0019] The inlet of the second waterway can be connected to the water inlet end;

[0020] The water purification system has a second working mode. In the second working mode, the water inlet is disconnected from the water inlet of the filter unit through the first water path, and the water inlet is connected to the water inlet of the filter unit through the fluid output regulating mechanism, so that the scale inhibitor solution is input into the filter unit at a second preset amount per unit time, where the second preset amount is greater than the first preset amount.

[0021] Preferably, in the first operating mode, the fluid output regulating mechanism causes the scale inhibitor solution to be intermittently output to the filter unit.

[0022] Preferably, the outlet of the scale inhibition solution generation unit is intermittently connected to the inlet of the filter unit through the fluid output regulating mechanism, and the fluid output regulating mechanism includes at least one of the following: a first on / off valve, and a two-inlet-one-outlet switching valve.

[0023] Preferably, the fluid output regulating mechanism is located upstream of the scale inhibition solution generating unit, and the fluid output regulating mechanism includes at least one of the following: a first on / off valve, and a one-in-two-out switching valve.

[0024] Preferably, the first working mode has a first stage and a second stage. In the first stage, the fluid output regulating mechanism connects the water inlet, the wastewater outlet, or the clean water outlet to the water inlet of the filter unit through the second water path. In the second stage, the fluid output regulating mechanism disconnects the water inlet, the wastewater outlet, or the clean water outlet from the water inlet of the filter unit through the second water path. The first stage and the second stage are executed alternately.

[0025] Preferably, the first waterway can be switched on and off.

[0026] Preferably, a second on / off valve is provided on the first water line.

[0027] Preferably, the fluid output regulating mechanism has a first function of making the flow rate a first preset amount per unit time and a second function of making the flow rate a second preset amount per unit time, wherein the second preset amount is greater than the first preset amount.

[0028] Preferably, in the first operating mode, the fluid output regulating mechanism is in the first function; in the second operating mode, the fluid output regulating mechanism is in the second function.

[0029] Preferably, the fluid output regulating mechanism includes: a flow limiting component, wherein the outlet of the scale inhibitor solution generating unit can be connected to the inlet of the filter unit through the flow limiting component or the outlet of the flow limiting component can be connected to the inlet of the filter unit through the scale inhibitor solution generating unit, the flow limiting component having the function of limiting the flow rate to be lower than or equal to a first preset amount per unit time; and a bypass water path connected in parallel with the flow limiting component, the bypass water path being able to be switched on and off.

[0030] Preferably, the fluid output regulating mechanism includes a first valve disposed on the bypass water line, the first valve including at least one of the following: a first on / off valve, a first switching valve.

[0031] Preferably, a second on / off valve is provided in the first water line;

[0032] The fluid output regulating mechanism includes a third water passage that has a flow limiting function or can be intermittently connected, and the outlet of the scale inhibitor solution generating unit is connected to the first water passage upstream of the second on / off valve through the third water passage.

[0033] Preferably, the fluid output regulating mechanism includes: a flow limiting component disposed on the third water path, the flow limiting component having the function of limiting the flow rate to be lower than or equal to a first preset amount per unit time, and the outlet of the scale inhibitor solution generating unit being connected to the first water path upstream of the second on / off valve through the flow limiting component.

[0034] Preferably, the current limiting component includes a small hole structure, so that the current limiting component has a current limiting effect of the flow rate being lower than or equal to a first preset amount per unit time.

[0035] Preferably, the fluid output regulating mechanism includes: a first on / off valve or a first switching valve disposed on the third water path.

[0036] Preferably, the fluid output regulating mechanism includes a fourth water channel, wherein the outlet of the scale inhibition solution generating unit is connected to the inlet of the filtration unit through the fourth water channel;

[0037] The third on / off valve or the second switching valve is installed in the fourth waterway.

[0038] Preferably, in the first operating mode, the outlet of the scale inhibition solution generating unit is disconnected from the inlet of the filter unit through the fourth water passage; in the second operating mode, the outlet of the scale inhibition solution generating unit is connected to the inlet of the filter unit through the fourth water passage.

[0039] Preferably, in the second working mode, the third waterway is in a disconnected state, the first waterway is in a disconnected state, and the fourth waterway is in a connected state.

[0040] Preferably, in the second operating mode, the first waterway is in a disconnected state, and the fourth waterway is in a connected state.

[0041] Preferably, in the first working mode, the scale inhibitor solution generation unit can achieve intermittent communication with the first water circuit through the fluid output regulating mechanism, so that the scale inhibitor solution is intermittently output to the first water circuit.

[0042] Preferably, the water purification system further includes:

[0043] A detection unit is used to detect the concentration of the scale inhibitor solution output by the scale inhibitor solution generation unit. The water purification system determines the ratio of the time that the outlet of the scale inhibitor solution generation unit is connected to and disconnected from the inlet of the filter unit or the first water circuit in the first working mode based on the concentration of the scale inhibitor solution detected by the detection unit.

[0044] Preferably, the detection unit includes at least a TDS detection unit.

[0045] Preferably, the water purification system includes: a recirculating water path that can be switched on and off, the recirculating water path connecting the purified water inlet of the filter unit to the scale inhibitor solution generating unit.

[0046] Preferably, the water purification system has a third operating mode, in which the purified water generated by the filtration unit is input into the receiving chamber of the scale inhibition solution generating unit.

[0047] Preferably, the return water path, the filtration unit, the scale inhibitor solution generation unit, and at least a portion of the first water path can form a circulating water path;

[0048] The scale inhibition solution generation unit can be connected to the inlet of the filter unit through the first valve;

[0049] One end of the return water path is connected to the outlet of the scale inhibitor solution generation unit;

[0050] The water purification system also includes a pump device installed on the circulating water path;

[0051] The water purification system has a third working mode. In the third working mode, the circulating water circuit is in a connected state, the outlet of the scale inhibition solution generation unit is disconnected from the inlet of the filter unit, and the pump device is in an on state.

[0052] Preferably, the outlet of the scale inhibitor solution generating unit can be connected to the inlet of the filter unit through the fluid output regulating mechanism, or the fluid output regulating mechanism is located at the inlet of the scale inhibitor solution generating unit or upstream of the inlet of the scale inhibitor solution generating unit.

[0053] One end of the return water path is connected upstream of the inlet of the scale inhibitor solution generation unit;

[0054] The return water path, the filtration unit, and the scale inhibitor solution generation unit can form a circulating water path;

[0055] The water purification system also includes a pump device installed on the circulating water path;

[0056] The water purification system has a third working mode, in which the circulating water circuit is in a connected state and the pump device is in an on state.

[0057] Preferably, the water purification system further includes:

[0058] A water storage unit for storing purified water that can be connected to the purified water inlet of the filter unit;

[0059] A water return path that can be switched on and off is provided, and the water storage unit is connected to the scale inhibitor solution generation unit through the water return path.

[0060] The water purification system has a third working mode, in which purified water in the water storage unit is input to the scale inhibition solution generation unit through the return water path.

[0061] Preferably, the scale inhibitor solution generating unit has a drain outlet. In the third working mode, the purified water in the water storage unit is input into the scale inhibitor solution generating unit through the return water path, and the original water in the scale inhibitor solution generating unit is discharged from the drain outlet.

[0062] Preferably, in the third working mode, the purified water in the water storage unit is input to the scale inhibition solution generation unit through the return water path, and the original water in the scale inhibition solution generation unit is discharged from the wastewater outlet of the filter unit.

[0063] Preferably, the wastewater outlet is connected to a wastewater discharge path, and the wastewater discharge path is equipped with a functional valve that has on / off function and wastewater ratio function.

[0064] The technical solution of this utility model has the following significant beneficial effects:

[0065] The water purification system of this application can pre-fill water into the containment chamber of the scale inhibitor solution generation unit. After a period of time, the solid scale inhibitor can dissolve in the water to form a high-concentration scale inhibitor solution. Then, when the user needs the water purification system to output purified water, raw water enters from the inlet end and enters the filtration unit through the first water path. The fluid output regulating mechanism adjusts the amount of the high-concentration scale inhibitor solution in the scale inhibitor solution generation unit flowing into the inlet per unit time, thereby ensuring that the scale inhibitor content in the raw water entering the filtration unit meets the expected requirements. Especially when raw water is input into the filtration unit at a large flow rate, the addition of the high-concentration scale inhibitor solution can ensure that the scale inhibitor content in the mixed inlet water meets the expected requirements, overcoming the problem in the prior art where the scale inhibitor content in the raw water is too low and does not meet the expected requirements due to the large flow rate of raw water passing through the solid scale inhibitor. The above methods ensure the scale inhibition effect of the filter unit and extend the service life of the filter membrane. Secondly, the water purification system does not require the replenishment of scale inhibitor to the scale inhibition solution generation unit, which effectively improves the convenience of using the water purification system and reduces the maintenance cost during use.

[0066] Specific embodiments of the present invention are disclosed in detail with reference to the following description and accompanying drawings, indicating how the principles of the present invention can be adopted. It should be understood that the embodiments of the present invention are not limited in scope. Features described and / or shown for one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments. Attached Figure Description

[0067] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of this invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely illustrative to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. Those skilled in the art, under the guidance of this invention, can select various possible shapes and proportions to implement this invention according to specific circumstances.

[0068] Figure 1 This is a schematic diagram of the water purification system in the first embodiment of the present invention;

[0069] Figure 2 This is a schematic diagram of the water purification system in a second embodiment of the present invention;

[0070] Figure 3 This is a schematic diagram of the water purification system in the third embodiment of the present invention;

[0071] Figure 4 This is a schematic diagram of the water purification system in the fourth embodiment of the present invention;

[0072] Figure 5 This is a schematic diagram of the water purification system in the fifth embodiment of this utility model;

[0073] Figure 6 This is a schematic diagram of the water purification system in the sixth embodiment of this utility model;

[0074] Figure 7 This is a schematic diagram of the water purification system in the seventh embodiment of this utility model;

[0075] Figure 8 This is a schematic diagram of the water purification system in the eighth embodiment of this utility model;

[0076] Figure 9 This is a schematic diagram of the water purification system in the ninth embodiment of this utility model;

[0077] Figure 10 This is a schematic diagram of the water purification system in the tenth embodiment of this utility model;

[0078] Figure 11 This is a schematic diagram of the water purification system in the eleventh embodiment of the present invention;

[0079] Figure 12 This is a schematic diagram of the water purification system in the twelfth embodiment of the present invention;

[0080] Figure 13 This is a schematic diagram of the water purification system in the thirteenth embodiment of the present invention.

[0081] The reference numerals in the above figures are as follows:

[0082] 1. Water inlet; 2. Filtration unit; 3. First water path; 4. Second water path; 5. Scale inhibition solution generation unit; 6. Fluid output regulating mechanism; 61. First valve; 62. Third water path; 63. Flow limiting component; 64. First on / off valve; 65. First switching valve; 66. Fourth water path; 67. Third on / off valve; 68. Second switching valve; 69. Bypass water path; 7. Second on / off valve; 8. Wastewater discharge water path; 9. Functional valve; 10. Detection unit; 11. Pump device; 12. Pretreatment filtration unit; 13. Water storage unit; 14. Fourth on / off valve; 15. Return water path; 16. Drive pump; 17. Fifth on / off valve. Detailed Implementation

[0083] The details of this utility model can be more clearly understood by referring to the accompanying drawings and the description of specific embodiments. However, the specific embodiments of this utility model described herein are only for explaining the purpose of this utility model and should not be construed as limiting this utility model in any way. Under the teachings of this utility model, those skilled in the art can conceive of any possible modifications based on this utility model, and these should all be considered to fall within the scope of this utility model. It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there may be an intervening element. The terms "mounted," "connected," and "connected" should be interpreted broadly, for example, it can be a mechanical connection or an electrical connection, or it can be a connection within two elements, which can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0084] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0085] To address the issues of uneconomical and inconvenient operation of high-flow-rate commercial water purification systems while ensuring the lifespan of the filter membrane, this application proposes a water purification system. Figure 1 This is a schematic diagram of the water purification system in the first embodiment of the present invention, as shown below. Figure 1 As shown, the water purification system may include: an inlet 1; a filter unit 2, which has an inlet, a clean water outlet, and a wastewater outlet; a first water path 3, the inlet of which can be connected to the inlet 1, and the outlet of which can be connected to the inlet; a second water path 4, on which a scale inhibitor solution generating unit 5 is provided, the outlet of which can be connected to the inlet, the scale inhibitor solution generating unit 5 including a receiving chamber that can be filled with water and a solid scale inhibitor disposed in the receiving chamber, the solid scale inhibitor being able to dissolve in water to form a scale inhibitor solution; and a fluid output regulating mechanism 6, which can regulate the amount of scale inhibitor solution flowing into the inlet per unit time.

[0086] The water purification system of this application can pre-fill water into the containment chamber of the scale inhibitor solution generation unit 5, allowing the solid scale inhibitor to dissolve in the water after a period of time to form a high-concentration scale inhibitor solution. Subsequently, when the user needs the water purification system to output purified water, raw water enters from the inlet 1 and flows through the first water path 3 into the filter unit 2. The fluid output regulating mechanism 6 regulates the amount of the high-concentration scale inhibitor solution in the scale inhibitor solution generation unit 5 flowing into the inlet per unit time, thereby ensuring that the scale inhibitor content in the raw water entering the filter unit 2 meets the expected requirements. Especially when raw water is input into the filter unit 2 at a high flow rate, the addition of the high-concentration scale inhibitor solution ensures that the scale inhibitor content in the mixed inlet water meets the expected requirements, overcoming the problem in the prior art where the scale inhibitor content in the raw water is too low and does not meet the expected requirements due to the large flow rate of raw water passing through the solid scale inhibitor. The above methods can ensure the scale inhibition effect of filter unit 2 and extend the service life of filter membrane; secondly, the water purification system does not need to replenish scale inhibitor in scale inhibitor generation unit 5, which effectively improves the convenience of using the water purification system and reduces the maintenance cost of the water purification system during use.

[0087] To better understand the water purification system in this application, it will be further explained and described below. For example... Figure 1 As shown, the water purification system includes: an inlet 1; a filter unit 2; a first water path 3; a second water path 4; and a fluid output regulating mechanism 6. The inlet 1 is used to connect to a water source to obtain raw water. Alternatively, a large flow rate of raw water can be obtained from the water source, reaching several liters per second, or even more than 10 liters per second, to meet the needs of large-flow commercial applications.

[0088] Filter unit 2 is used to filter raw water to produce purified water. Filter unit 2 can be a component that generates wastewater during filtration, employing a filter membrane. To prevent scaling on the filter membrane surface and reduce pore clogging, scale inhibitors are added to the raw water input to filter unit 2, thereby extending the membrane's lifespan and maintaining its filtration efficiency. For example, the filter membrane in filter unit 2 can include one of the following: reverse osmosis membrane, nanofiltration membrane, ultrafiltration membrane, etc. Filter unit 2 has an inlet, a purified water outlet, and a wastewater outlet. The inlet of filter unit 2 is used to input raw water, the purified water outlet is used to output the generated purified water, and the wastewater outlet is used to discharge the wastewater generated during the filtration process. The wastewater outlet is connected to a wastewater discharge channel 8, which is equipped with a functional valve 9 that has a wastewater ratio function. The inlet of the first water channel 3 can be connected to the inlet end 1, and the outlet of the first water channel 3 can be connected to the inlet.

[0089] A scale inhibitor solution generating unit 5 is installed on the second water passage 4. The outlet of the scale inhibitor solution generating unit 5 can be connected to the inlet. Alternatively, one end of the second water passage 4 can be connected to the inlet, so that the outlet of the scale inhibitor solution generating unit 5 can be connected to the inlet. The scale inhibitor solution generating unit 5 includes a receiving chamber and a solid scale inhibitor disposed in the receiving chamber. For example, the scale inhibitor solution generating unit 5 can form the receiving chamber through a tank, which is filled with a solid scale inhibitor. The receiving chamber can be filled with water so that the solid scale inhibitor dissolves in the water to form a scale inhibitor solution. Generally, since the concentration of the scale inhibitor solution to be formed in the water does not need to be too high, slow-release scale inhibitors are generally used in water purification systems. This ensures that the effective ingredients are released stably over a longer period of time, ensuring the service life of the scale inhibitor solution generating unit 5. The water purification system pre-fills the receiving chamber of the scale inhibitor solution generating unit 5 with water, and after a period of time, the solid scale inhibitor dissolves in the water to form a higher concentration of scale inhibitor solution, thus achieving the purpose of increasing the concentration of the scale inhibitor solution. For example, the aforementioned time could be tens of minutes or several hours. The concentration of the scale inhibitor solution formed in this method is approximately 5-20 times higher than the concentration of the scale inhibitor solution formed by passing raw water through a solid scale inhibitor via a flow path. For instance, when the solid scale inhibitor is a phosphate scale inhibitor, the concentration of the scale inhibitor solution formed after 5 hours of dissolution in this method can reach 1.58 mg / L, while the concentration of the scale inhibitor solution formed by passing raw water through a solid scale inhibitor via a flow path under the same conditions is 0.14 mg / L, a difference of approximately 11 times.

[0090] The fluid output regulating mechanism 6 can regulate the amount of scale inhibitor solution flowing into the inlet of filter unit 2 per unit time. The fluid output regulating mechanism 6 can take different forms, as long as it can regulate the amount of scale inhibitor solution flowing into the inlet per unit time. It can regulate the scale inhibitor solution to flow continuously into the inlet of filter unit 2 at a small flow rate, or it can regulate the intermittent flow of the scale inhibitor solution into the inlet of filter unit 2. Both methods can regulate the scale inhibitor solution to flow into the inlet of filter unit 2 at a small amount per unit time. It should be noted that the unit time here is not necessarily a very short time span; it can be greater than or equal to one cycle of the intermittent flow of the scale inhibitor solution into the inlet of filter unit 2, and can be a time span of several seconds, ten seconds, fifteen seconds, or even one minute, two minutes, etc. When the fluid output regulating mechanism 6 regulates the intermittent flow of the scale inhibitor solution into the inlet of filter unit 2, the flow of the scale inhibitor solution into the inlet of filter unit 2 is not a stable, continuous flow, but an unstable, intermittent flow.

[0091] After a high-concentration scale-inhibiting solution is formed in the containment chamber, when the user needs purified water from the water purification system, raw water enters from the inlet 1 through the first water path 3 and enters the filter unit 2. The fluid output regulating mechanism 6 adjusts the amount of the high-concentration scale-inhibiting solution in the scale-inhibiting solution generation unit 5 flowing into the inlet per unit time, thereby ensuring that the scale-inhibiting substance content in the raw water entering the filter unit 2 meets the expected requirements. Especially when raw water is input into the filter unit 2 at a high flow rate, adding the high-concentration scale-inhibiting solution ensures that the scale-inhibiting substance content in the mixed inlet water meets the expected requirements. This method ensures the scale-inhibiting effect of the filter unit 2 and extends the service life of the filter membrane. The water purification system does not require replenishment of scale inhibitor in the scale-inhibiting solution generation unit 5, which effectively improves the convenience of using the water purification system and reduces the maintenance costs during use.

[0092] When scale inhibitor solution generation unit 5 needs to form a scale inhibitor solution, the containing chamber of scale inhibitor solution generation unit 5 can first be filled with water so that the solid scale inhibitor can dissolve in the water to form a scale inhibitor solution of sufficient concentration. As the time of the solid scale inhibitor in the water continues to increase, the concentration of the formed scale inhibitor solution can also continuously increase until a certain concentration value is reached. As a feasible approach, Figure 2 This is a schematic diagram of the water purification system in a second embodiment of the present invention, as shown below. Figure 2 As shown, the inlet of the second water passage 4 can be connected to the inlet 1 to allow the raw water input from the inlet 1 to flow into the containment chamber of the scale inhibitor solution generation unit 5. Simultaneously, when the raw water input from the inlet 1 is filtered by the filter unit 2 to output purified water, the connection between the inlet of the second water passage 4 and the inlet 1 allows the raw water from the inlet 1 to enter the containment chamber of the scale inhibitor solution generation unit 5. This pushes the scale inhibitor solution in the containment chamber out and, under the regulation of the fluid output regulating mechanism 6, flows into the inlet of the filter unit 2. Thus, without the need for other equipment (pump device 11, venturi structure), the scale inhibitor solution in the containment chamber can be input into the inlet of the filter unit 2.

[0093] In another feasible implementation, Figure 3 This is a schematic diagram of the water purification system in a third embodiment of the present invention, as shown below. Figure 3 As shown, the inlet of the second water channel 4 can be connected to the wastewater outlet. In this embodiment, the wastewater generated by the filtration unit 2 in the water purification system during filtration to produce purified water can flow into the receiving chamber of the scale inhibitor solution generating unit 5, thus achieving water conservation and slightly improving the recovery rate of the water purification system. Alternatively, the scale inhibitor solution in the receiving chamber can be pushed out and flow into the inlet of the filtration unit 2 under the regulation of the fluid output regulating mechanism 6.

[0094] In yet another feasible implementation, Figure 4This is a schematic diagram of the water purification system in the fourth embodiment of the present invention, as shown below. Figure 4 As shown, the inlet of the second water path 4 can be connected to the purified water outlet. In this embodiment, the purified water generated by the filtration unit 2 can be added to the receiving chamber of the scale inhibitor solution generating unit 5. Furthermore, when the filter membrane in the filtration unit 2 is a reverse osmosis membrane, the purified water produced by the filtration unit 2 is pure water. Compared with ordinary raw water, purified water can result in a higher concentration of the scale inhibitor solution formed by the solid scale inhibitor dissolving in the water. Among them, the scale inhibitor solution formed by pure water has the highest concentration. For example, the concentration of the scale inhibitor solution formed by pure water can be about 6-7 times that of the scale inhibitor solution formed by raw water. Furthermore, for the same volume of scale inhibitor solution, the scale inhibitor solution formed by purified water can meet the mixing needs of a larger amount of raw water input from the inlet 1 through the first water path 3 into the filtration unit 2. Similarly, in this embodiment, the scale inhibitor solution in the receiving chamber can also be pushed out and flow into the inlet of the filtration unit 2 under the regulation of the fluid output regulating mechanism 6.

[0095] In the above-described embodiments, the water purification system can have a first operating mode. In this first operating mode, the inlet 1, wastewater outlet, or purified water outlet is connected to the inlet of the filter unit 2 via the fluid output regulating mechanism 6 and the second water path 4, or the connection is intermittent. The inlet 1 is also connected to the inlet of the filter unit 2 via the first water path 3. In this operating mode, such as... Figures 2 to 4 As shown, water flowing from inlet 1, wastewater outlet, or clean water outlet enters the receiving chamber of scale inhibitor solution generation unit 5 to push out the scale inhibitor solution. Fluid output regulating mechanism 6 ensures that the scale inhibitor solution output from scale inhibitor solution generation unit 5, within a controllable design quantity per unit time, is input into filter unit 2 along with the water output from first water path 3. This ensures that the scale inhibitor content in the raw water input into filter unit 2 meets the expected requirements. For example, fluid output regulating mechanism 6 ensures that the scale inhibitor solution, within a first preset quantity per unit time, is input into filter unit 2 along with the water output from first water path 3.

[0096] Furthermore, Figure 5 This is a schematic diagram of the water purification system in the fifth embodiment of this utility model. Figure 6 This is a schematic diagram of the water purification system in the sixth embodiment of this utility model. Figure 7 This is a schematic diagram of the water purification system in the seventh embodiment of this utility model, as shown below. Figures 5 to 7As shown, the inlet of the second water path 4 can be connected to the inlet 1. Raw water input to inlet 1 can be fed into the inlet of filter unit 2 through the second water path 4. In this embodiment, the water purification system can have a second operating mode. In the second operating mode, inlet 1 is disconnected from the inlet of filter unit 2 via the first water path 3, and connected to the inlet of filter unit 2 via the fluid output regulating mechanism 6, so that the scale inhibitor solution is input into filter unit 2 at a second preset amount per unit time, where the second preset amount is greater than the first preset amount. The second preset amount can be understood as the amount of raw water per unit time when the water purification system normally filters and forms purified water. When the scale inhibitor solution generated by the scale inhibitor solution generation unit 5 is completely used up or the concentration is too low, and the water purification system does not have enough time to allow the scale inhibitor solution generation unit 5 to dissolve and form a new scale inhibitor solution with the required concentration, if the user still needs the water purification system to output purified water, the water purification system can enter the second working mode. When the raw water input from the inlet 1 flows through the scale inhibitor solution generation unit 5 of the second water path 4, the raw water will flow through the solid scale inhibitor in the containment chamber. At this time, some scale inhibitors will also dissolve in the raw water. When it enters the filter unit 2 for filtration, it can also have a scale inhibition effect on the filter unit 2 to a certain extent.

[0097] When the water purification system has a second operating mode, the first water path 3 can be switched on and off. As a feasible option, such as... Figures 5 to 7 As shown, a second on / off valve 7 can be installed on the first water passage 3.

[0098] In the first operating mode, as feasible, the fluid output regulating mechanism 6 regulates the intermittent output of the scale-inhibiting solution to the filter unit 2. To achieve the above objective, there can be various different implementation methods, such as... Figures 1 to 7 As shown, for example, the outlet of the scale inhibitor solution generation unit 5 is intermittently connected to the inlet of the filter unit 2 through a fluid output regulating mechanism 6. The fluid output regulating mechanism 6 includes at least one of the following: a first on / off valve 64 and a two-in-one-out switching valve. By continuously opening and closing the first on / off valve 64 and continuously switching the two-in-one-out switching valve between two positions, intermittent connection between the outlet of the scale inhibitor solution generation unit 5 and the inlet of the filter unit 2 can be achieved. As another example, the fluid output regulating mechanism 6 is located upstream of the scale inhibitor solution generation unit 5. The fluid output regulating mechanism 6 includes at least one of the following: a first on / off valve 64 and a one-in-two-out switching valve. By continuously opening and closing the first on / off valve 64 and continuously switching the one-in-two-out switching valve between two positions, intermittent connection between the outlet of the scale inhibitor solution generation unit 5 and the inlet of the filter unit 2 can be achieved. In this embodiment, the water flowing out of the inlet 1, wastewater outlet, or clean water outlet first passes through the fluid output regulating mechanism 6 and then enters the receiving chamber of the scale inhibition solution generating unit 5, so as to push out the scale inhibition solution according to the amount flowing into the receiving chamber of the scale inhibition solution generating unit 5.

[0099] To enable the fluid output regulating mechanism 6 to intermittently output the scale inhibitor solution to the filter unit 2, specifically, the first operating mode can have a first stage and a second stage. In the first stage, the fluid output regulating mechanism 6 connects the inlet 1, wastewater outlet, or clean water outlet to the inlet of the filter unit 2 via the second water passage 4. In the second stage, the fluid output regulating mechanism 6 disconnects the inlet 1, wastewater outlet, or clean water outlet from the inlet of the filter unit 2 via the second water passage 4. The first and second stages are executed alternately. For example, in the first stage, the first on / off valve 64 can be in a connected state, the one-in-two-out switching valve can be switched to connect the inlet 1, wastewater outlet, or clean water outlet to the scale inhibitor solution generating unit 5, and the two-in-one-out switching valve can be switched to connect the outlet of the scale inhibitor solution generating unit 5 to the inlet of the filter unit 2. In the first stage, the first on / off valve 64 can be in the off state, the one-in-two-out switching valve can be switched to the water inlet 1 or wastewater outlet or clean water outlet and the scale inhibitor solution generating unit 5 are in the off state, and the two-in-one-out switching valve can be switched to the outlet of the scale inhibitor solution generating unit 5 and the water inlet of the filter unit 2 are in the off state.

[0100] As a feasible embodiment, the fluid output regulating mechanism 6 has a first function of making the flow rate a first preset amount per unit time and a second function of making the flow rate a second preset amount per unit time, wherein the second preset amount is greater than the first preset amount. In the above embodiment, in the first operating mode, the fluid output regulating mechanism is in the first function; in the second operating mode, the fluid output regulating mechanism is in the second function.

[0101] For example, the fluid output regulating mechanism 6 may include a flow limiting component 63 and a bypass water path 69. The outlet of the scale inhibitor solution generating unit 5 can be connected to the inlet of the filter unit 2 through the flow limiting component 63, or the outlet of the flow limiting component 63 can be connected to the inlet of the filter unit 2 through the scale inhibitor solution generating unit 5. The flow limiting component 63 has a flow limiting effect that makes the flow rate lower than or equal to a first preset amount per unit time. Alternatively, the flow limiting component 63 may include a small-hole structure to make the flow limiting component 63 have a flow limiting effect that makes the flow rate lower than or equal to the first preset amount per unit time. Furthermore, in order to enable the water purification system to have a second operating mode, the water inlet 1 can be connected to the water inlet of the filter unit 2 through the fluid output regulating mechanism 6, so that the scale inhibitor solution is input into the filter unit 2 at a second preset amount per unit time, where the second preset amount is greater than the first preset amount. Figure 8 This is a schematic diagram of the water purification system in the eighth embodiment of the present invention, as shown below. Figure 8As shown, the bypass water passage 69 is connected in parallel with the flow limiting component 63, and the bypass water passage 69 can be switched on and off. In the second operating mode, the bypass water passage 69 is in a connected state, and in the first operating mode, the bypass water passage 69 is in a disconnected state. In order to realize the switching on and off of the bypass water passage 69, the fluid output regulating mechanism 6 may include a first valve 61 disposed on the bypass water passage 69. The first valve 61 includes at least one of the following: a first on / off valve 64 and a first switching valve 65. The first switching valve 65 may be disposed at the intersection of the bypass water passage 69 and the water passage where the flow limiting component 63 is located. The first switching valve 65 may be a one-in-two-out switching valve or a two-in-one-out switching valve, depending on whether the first valve 61 is disposed at the beginning or end of the bypass water passage 69.

[0102] For example, the fluid output regulating mechanism 6 may include a flow control device, which can directly control the flow rate to a first preset amount per unit time and the flow rate to a second preset amount per unit time.

[0103] For example, Figure 9 This is a schematic diagram of the water purification system in the ninth embodiment of this utility model, as shown below. Figure 9 As shown, a second on / off valve 7 is provided on the first water passage 3; the fluid output regulating mechanism 6 may include a third water passage 62 that has a flow limiting function or can be intermittently connected, and the outlet of the scale inhibitor solution generating unit 5 is connected to the first water passage 3 upstream of the second on / off valve 7 through the third water passage 62.

[0104] In order to enable the third waterway 62 to have a flow-limiting function, as a feasible approach is... Figure 9 As shown, the fluid output regulating mechanism 6 includes a flow limiting component 63 disposed on the third water passage 62. The flow limiting component 63 has a flow limiting effect that makes the flow rate lower than or equal to a first preset amount per unit time. The outlet of the scale inhibitor solution generating unit 5 is connected to the first water passage 3 upstream of the second on / off valve 7 through the flow limiting component 63. Alternatively, the flow limiting component 63 may include a small orifice structure to make the flow limiting component 63 have a flow limiting effect that makes the flow rate lower than or equal to the first preset amount per unit time.

[0105] In order to ensure that the third waterway 62 can be intermittently connected, as a feasible approach, is... Figure 9 As shown, the fluid output regulating mechanism 6 may include a first on / off valve 64 or a first switching valve 65 disposed on the third water passage 62. In this embodiment, in the first operating mode, the scale inhibitor solution generating unit 5 can achieve intermittent communication with the first water passage 3 through the fluid output regulating mechanism 6, so that the scale inhibitor solution is intermittently output to the first water passage 3.

[0106] When the fluid output regulating mechanism 6 includes a third water passage 62 that has a flow-limiting function or can be intermittently connected, such as Figure 9As shown, the fluid output regulating mechanism 6 may further include: a fourth water path 66, through which the outlet of the scale inhibitor solution generating unit 5 is connected to the inlet of the filter unit 2; and a third on / off valve 67 or a second switching valve 68 disposed on the fourth water path 66. In this embodiment, in the second operating mode, the first water path 3 is in the off state, and the fourth water path 66 is in the connected state.

[0107] In this embodiment, as feasible, in the first operating mode, the outlet of the scale inhibition solution generating unit 5 is disconnected from the inlet of the filter unit 2 via the fourth water passage 66; in the second operating mode, the outlet of the scale inhibition solution generating unit 5 is connected to the inlet of the filter unit 2 via the fourth water passage 66. Furthermore, in this embodiment, in the second operating mode, the third water passage 62 is disconnected, the first water passage 3 is disconnected, and the fourth water passage 66 is connected.

[0108] As a feasible option, Figure 10 This is a schematic diagram of the water purification system in the tenth embodiment of the present invention, as shown below. Figure 10 As shown, the water purification system may include a detection unit 10 for detecting the concentration of the scale inhibitor solution output by the scale inhibitor solution generation unit 5. Based on the concentration of the scale inhibitor solution detected by the detection unit 10, the water purification system determines the time ratio between the connection and disconnection of the outlet of the scale inhibitor solution generation unit 5 and the inlet of the filter unit 2 or the first water path 3 in the first operating mode, thereby adjusting the amount of scale inhibitor solution output by the scale inhibitor solution generation unit 5 per unit time. In the above manner, on the one hand, in the first working mode, water continuously flows into the scale inhibitor solution generation unit 5 to drive the scale inhibitor solution therein to enter the inlet of the filter unit 2 under the regulation of the fluid output regulating mechanism 6. In this way, the concentration of the scale inhibitor solution will continuously decrease. By using the cooperation of the detection unit 10 and the fluid output regulating mechanism 6, the time ratio of the connection and disconnection between the outlet of the scale inhibitor solution generation unit 5 and the inlet of the filter unit 2 or the first water channel 3 in the first working mode can be re-determined after the concentration of the scale inhibitor solution decreases. This adjusts the amount of scale inhibitor solution output by the scale inhibitor solution generation unit 5 per unit time to keep it constant. On the other hand, through the detection unit 10, if the water purification system continues to output purified water, it can switch from the first working mode to the second working mode after the concentration of the scale inhibitor solution decreases to a certain level. This ensures that the raw water entering the filter unit 2 contains as much scale inhibitor dissolved in solid scale inhibitor as possible.

[0109] In the above embodiments, the detection unit 10 includes at least a TDS detection unit 10. If the TDS value detected by the TDS detection unit 10 in the scale inhibitor solution is higher, it indicates that the concentration of the scale inhibitor solution is higher; if the TDS value detected by the TDS detection unit 10 in the scale inhibitor solution is lower, it indicates that the concentration of the scale inhibitor solution is lower.

[0110] As a feasible option, Figure 13 This is a schematic diagram of the water purification system in the thirteenth embodiment of the present invention, as shown below. Figure 13 As shown, the water purification system may include a pretreatment filtration unit 12, which is located upstream of the first water path 3 and the second water path 4. Water entering from the inlet 1 can be filtered by the pretreatment filtration unit 12 before flowing into the first water path 3 and / or the second water path 4. The pretreatment filtration unit 12 is used to perform primary filtration on the raw water, for example, to remove large particulate impurities.

[0111] As a feasible option, Figure 11 This is a schematic diagram of the water purification system in the eleventh embodiment of this utility model. Figure 12 This is a schematic diagram of the water purification system in the twelfth embodiment of the present invention, as shown below. Figures 11 to 13 As shown, the water purification system may include a switchable return water path 15. For example, a fourth on / off valve 14 is provided on the return water path 15. The return water path 15 can connect the purified water inlet of the filter unit 2 to the scale inhibitor solution generating unit 5. The water purification system may have a third operating mode, in which the purified water generated by the filter unit 2 is input into the receiving chamber of the scale inhibitor solution generating unit 5. When the inlet of the second water path 4 can be connected to the inlet 1, or when the inlet of the second water path 4 can be connected to the wastewater outlet, in the third operating mode, the purified water generated by the purified water inlet of the filter unit 2 can be input into the scale inhibitor solution generating unit 5 through the return water path 15, thereby replacing the raw water or wastewater in the scale inhibitor solution generating unit 5 with purified water, or filling the scale inhibitor solution generating unit 5 with purified water. After this, the scale inhibitor solution generating unit 5 is left to stand so that the solid scale inhibitor dissolves in the purified water to form a higher concentration scale inhibitor solution. When the inlet of the second water channel 4 can be connected to the clean water outlet, in the third working mode, the scale inhibition solution generation unit 5 can be replenished with clean water.

[0112] In one implementation, such as Figure 11As shown, the return water path 15, the filter unit 2, the scale inhibitor solution generating unit 5, and at least a portion of the first water path 3 can form a circulating water path. The water purification system may also include a pump device 11 installed on the circulating water path. The scale inhibitor solution generating unit 5 is connected to the inlet of the filter unit 2 through a first valve 61. One end of the return water path 15 is connected to the outlet of the scale inhibitor solution generating unit 5. In the third operating mode, the circulating water path can be in a connected state, the outlet of the scale inhibitor solution generating unit 5 is disconnected from the inlet of the filter unit 2, and the pump device 11 is in an on state. Through the above method, under the drive of the pump device 11, the water in the circulating water path flows through the filter unit 2 for filtration, and the resulting purified water enters the scale inhibitor solution generating unit 5, thus turning all the water in the scale inhibitor solution generating unit 5 into purified water.

[0113] In another implementation, such as Figure 12 As shown, the outlet of the scale inhibitor solution generating unit 5 can be connected to the inlet of the filter unit 2 via the fluid output regulating mechanism 6, or the fluid output regulating mechanism 6 is located upstream of the inlet of the scale inhibitor solution generating unit 5. One end of the return water path 15 is connected upstream of the inlet of the scale inhibitor solution generating unit 5. The return water path 15, the filter unit 2, and the scale inhibitor solution generating unit 5 can form a circulating water path. The water purification system also includes a pump device 11 installed on the circulating water path. In the third working mode, the circulating water path is in a connected state, and the pump device 11 is in an open state. In the above manner, the water in the circulating water path can also be filtered by the filter unit 2 under the drive of the pump device 11, and the resulting purified water enters the scale inhibitor solution generating unit 5, so that all the water in the scale inhibitor solution generating unit 5 can be turned into purified water.

[0114] When the pump device 11 drives the water in the circulating water circuit to circulate, in order to prevent the water in the circulating water circuit from decreasing without replenishing new raw water, the wastewater discharge water circuit 8 is equipped with a functional valve 9 that has on / off function and wastewater ratio function.

[0115] When the outlet of the scale inhibition solution generation unit 5 is intermittently connected to the inlet of the filter unit 2 through the fluid output regulating mechanism 6, in another embodiment, such as Figure 13As shown, the water purification system may include: a water storage unit 13 for storing purified water, which is connected to the purified water inlet of the filter unit 2; and a return water path 15 that can be switched on and off, through which the water storage unit 13 is connected to the scale inhibitor solution generating unit 5. In the third operating mode, the purified water in the water storage unit 13 can be input into the scale inhibitor solution generating unit 5 through the return water path 15. This method also allows all the water in the scale inhibitor solution generating unit 5 to become purified water. Specifically, a fifth on / off valve 17 can be installed between the water storage unit 13 and the purified water inlet of the filter unit 2. A drive pump 16 can be installed on the return water path 15 to drive the purified water in the water storage unit 13 into the scale inhibitor solution generating unit 5.

[0116] In one feasible embodiment of the above embodiments, the scale inhibitor solution generating unit 5 may have a drain outlet. In the third operating mode, purified water in the water storage unit 13 is input to the scale inhibitor solution generating unit 5 through the return water passage 15, and the original water in the scale inhibitor solution generating unit 5 can be discharged from the drain outlet. In another feasible embodiment, in the third operating mode, purified water in the water storage unit 13 is input to the scale inhibitor solution generating unit 5 through the return water passage 15, and the original water in the scale inhibitor solution generating unit 5 is discharged from the wastewater outlet of the filter unit 2.

[0117] This application also proposes a control method for a water purification system. This control method can be applied to the aforementioned water purification system, or to other compatible water purification systems. The control method may include the following steps:

[0118] Obtain the purified water output command that requires purified water to be output. The user needs to obtain purified water, and the user operates the water purification system so that the water purification system can obtain the purified water output command that requires purified water to be output.

[0119] When the first preset condition is met, the water inlet 1 is connected to the water inlet of the filter unit 2 through the first water passage 3. The scale inhibitor solution in the scale inhibitor solution generation unit 5 is input into the water inlet of the filter unit 2 at a first preset amount per unit time through the fluid output regulating mechanism 6, so that the scale inhibitor solution and the raw water input from the first water passage 3 are input into the filter unit 2 together.

[0120] In this step, raw water enters from the inlet 1 and flows through the first water path 3 into the filter unit 2. The high-concentration scale inhibitor solution in the scale inhibitor solution generation unit 5 flows into the inlet under the action of the fluid output regulating mechanism 6, thus mixing with the raw water. This ensures that the scale inhibitor content in the raw water entering the filter unit 2 meets the expected requirements. The first preset condition can be a condition where the concentration of the scale inhibitor solution in the scale inhibitor solution generation unit 5 directly or indirectly meets the requirements. For example, the first preset condition includes at least one of the following: the time since the last output of purified water from the water purification system reaches a first preset time; the concentration of the scale inhibitor solution in the scale inhibitor solution generation unit 5 reaches a first preset concentration; the TDS value of the scale inhibitor solution in the scale inhibitor solution generation unit 5 is higher than a first preset TDS value, etc.

[0121] In this step, in order to ensure that the scale inhibitor solution in the scale inhibitor solution generation unit 5 is input into the inlet of the filter unit 2 at a first preset amount per unit time through the fluid output regulating mechanism 6, it is feasible to specifically include: controlling the fluid output regulating mechanism 6 to perform a first stage, in which the scale inhibitor solution in the scale inhibitor solution generation unit 5 is input into the inlet of the filter unit 2; controlling the fluid output regulating mechanism 6 to perform a second stage, in which the scale inhibitor solution in the scale inhibitor solution generation unit 5 stops being input into the inlet of the filter unit 2; and controlling the fluid output regulating mechanism 6 to alternately perform the first stage and the second stage.

[0122] This step may also include inputting raw water from the inlet 1, purified water generated by the filter unit 2, or wastewater generated by the filter unit 2 into the scale inhibition solution generating unit 5, so that the original scale inhibition solution in the scale inhibition solution generating unit 5 is driven to flow out. In this way, the scale inhibition solution in the scale inhibition solution generating unit 5 can be driven to flow out without adding other driving devices.

[0123] When the second preset condition is met, the first water path 3 is disconnected, and the raw water flowing in from the inlet 1 is fed into the inlet of the filter unit 2 through the scale inhibitor solution generation unit 5 at a second preset amount per unit time by the fluid output regulating mechanism 6; the second preset amount is greater than the first preset amount.

[0124] In this step, after the water purification system outputs purified water for a period of time or a certain amount, as the scale inhibitor solution in the scale inhibitor solution generation unit 5 is continuously used up, its concentration decreases until it no longer meets the requirements. At this point, all the raw water input from the inlet 1 can pass through the scale inhibitor solution generation unit 5 and then be input into the inlet of the filter unit 2. The raw water then flows through the solid scale inhibitor in the scale inhibitor solution generation unit 5 in a flow-through manner, dissolving some scale inhibitory substances in the raw water. When it then enters the filter unit 2 for filtration, it can also have a scale inhibition effect on the filter unit 2 to a certain extent. The second preset condition can be a condition that directly or indirectly determines that the concentration of the scale inhibitor solution in the scale inhibitor solution generation unit 5 does not meet the requirements. For example, the second preset condition includes at least one of the following: the cumulative time for the water purification system to output purified water within a predetermined time reaches the second preset time; the concentration of the scale inhibitor solution in the scale inhibitor solution generation unit 5 is lower than the second preset concentration; the TDS value of the scale inhibitor solution in the scale inhibitor solution generation unit 5 is lower than the second preset TDS value, etc. Wherein, the second preset concentration is lower than the first preset concentration, and the second preset TDS value is lower than the first preset TDS value.

[0125] All articles and references disclosed herein, including patent applications and publications, are incorporated herein by reference for various purposes. The term “substantially constitutes…” used to describe a combination should include the identified element, component, part, or step, as well as other elements, components, parts, or steps that do not substantially affect the essential novelty of the combination. The use of the terms “comprising” or “including” to describe combinations of elements, components, parts, or steps herein also contemplates embodiments substantially constituted by such elements, components, parts, or steps. The use of the term “may” herein is intended to indicate that any described attribute “may” include is optional. Multiple elements, components, parts, or steps can be provided by a single integrated element, component, part, or step. Alternatively, a single integrated element, component, part, or step can be divided into multiple separate elements, components, parts, or steps. The disclosure of “a” or “an” used to describe an element, component, part, or step does not imply exclusion of other elements, components, parts, or steps.

[0126] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A water purification system, characterized in that, The water purification system includes: Water inlet end; The filtration unit has a water inlet, a clean water outlet, and a wastewater outlet; The first waterway has an inlet that can be connected to the water inlet end and an outlet that can be connected to the water inlet. The second water channel is equipped with a scale inhibitor solution generating unit. The outlet of the scale inhibitor solution generating unit can be connected to the inlet. The scale inhibitor solution generating unit includes a receiving chamber and a solid scale inhibitor disposed in the receiving chamber. The receiving chamber can be filled with water so that the solid scale inhibitor dissolves in the water to form a scale inhibitor solution. A fluid output regulating mechanism is provided, which can regulate the amount of scale inhibitor solution flowing into the inlet per unit time.

2. The water purification system according to claim 1, characterized in that, The first waterway and the second waterway are connected in parallel, and the inlet of the second waterway can be connected to the water inlet.

3. The water purification system according to claim 1, characterized in that, The inlet of the second waterway can be connected to the wastewater outlet.

4. The water purification system according to claim 1, characterized in that, The inlet of the second waterway can be connected to the clean water outlet.

5. The water purification system according to claim 2, 3, or 4, characterized in that, The water purification system has a first working mode. In the first working mode, the water inlet, the wastewater outlet, or the purified water outlet is connected to the water inlet of the filter unit or intermittently through the fluid output regulating mechanism and the second water path. The water inlet is connected to the water inlet of the filter unit through the first water path.

6. The water purification system according to claim 5, characterized in that, The fluid output regulating mechanism allows the scale inhibitory solution to be input into the filtration unit together with the water output from the first water path at a first preset amount per unit time. The inlet of the second waterway can be connected to the water inlet end; The water purification system has a second working mode. In the second working mode, the water inlet is disconnected from the water inlet of the filter unit through the first water path, and the water inlet is connected to the water inlet of the filter unit through the fluid output regulating mechanism, so that the scale inhibitor solution is input into the filter unit at a second preset amount per unit time, where the second preset amount is greater than the first preset amount.

7. The water purification system according to claim 5, characterized in that, In the first operating mode, the fluid output regulating mechanism causes the scale inhibitor solution to be intermittently output to the filter unit.

8. The water purification system according to claim 7, characterized in that, The outlet of the scale inhibition solution generation unit is intermittently connected to the inlet of the filter unit through the fluid output regulating mechanism. The fluid output regulating mechanism includes at least one of the following: a first on / off valve and a two-inlet-one-outlet switching valve.

9. The water purification system according to claim 7, characterized in that, The fluid output regulating mechanism is located upstream of the scale inhibition solution generating unit, and the fluid output regulating mechanism includes at least one of the following: a first on / off valve, and a one-in-two-out switching valve.

10. The water purification system according to claim 7, characterized in that, The first working mode has a first stage and a second stage. In the first stage, the fluid output regulating mechanism connects the water inlet, the wastewater outlet, or the clean water outlet to the water inlet of the filter unit through the second water path. In the second stage, the fluid output regulating mechanism disconnects the water inlet, the wastewater outlet, or the clean water outlet from the water inlet of the filter unit through the second water path. The first stage and the second stage are executed alternately.

11. The water purification system according to claim 6, characterized in that, The first waterway can be opened and closed.

12. The water purification system according to claim 11, characterized in that, A second on / off valve is installed on the first water line.

13. The water purification system according to claim 5, characterized in that, The fluid output regulating mechanism has a first function of making the flow rate a first preset amount per unit time and a second function of making the flow rate a second preset amount per unit time, wherein the second preset amount is greater than the first preset amount.

14. The water purification system according to claim 13, characterized in that, In the first operating mode, the fluid output regulating mechanism is in the first function; in the second operating mode, the fluid output regulating mechanism is in the second function.

15. The water purification system according to claim 13, characterized in that, The fluid output regulating mechanism includes: a flow limiting component, wherein the outlet of the scale inhibitor solution generating unit can be connected to the inlet of the filter unit through the flow limiting component or the outlet of the flow limiting component can be connected to the inlet of the filter unit through the scale inhibitor solution generating unit, the flow limiting component having the function of limiting the flow rate to be lower than or equal to a first preset amount per unit time; and a bypass water path connected in parallel with the flow limiting component, the bypass water path being able to be switched on and off.

16. The water purification system according to claim 15, characterized in that, The fluid output regulating mechanism includes a first valve disposed on the bypass water line, the first valve including at least one of the following: a first on / off valve, a first switching valve.

17. The water purification system according to claim 13, characterized in that, A second on / off valve is installed on the first water line; The fluid output regulating mechanism includes a third water passage that has a flow limiting function or can be intermittently connected, and the outlet of the scale inhibitor solution generating unit is connected to the first water passage upstream of the second on / off valve through the third water passage.

18. The water purification system according to claim 17, characterized in that, The fluid output regulating mechanism includes: a flow limiting component disposed on the third water path, the flow limiting component having the function of limiting the flow rate to be lower than or equal to a first preset amount per unit time, and the outlet of the scale inhibitor solution generation unit being connected to the first water path upstream of the second on / off valve through the flow limiting component.

19. The water purification system according to claim 15 or 18, characterized in that, The current limiting component includes a small hole structure, so that the current limiting component has a current limiting effect of the flow rate being lower than or equal to a first preset amount per unit time.

20. The water purification system according to claim 17, characterized in that, The fluid output regulating mechanism includes: a first on / off valve or a first switching valve disposed on the third water line.

21. The water purification system according to claim 17, characterized in that, The fluid output regulating mechanism includes a fourth water channel, through which the outlet of the scale inhibition solution generating unit is connected to the inlet of the filtration unit; The third on / off valve or the second switching valve is installed in the fourth waterway.

22. The water purification system according to claim 21, characterized in that, In the first operating mode, the outlet of the scale inhibition solution generating unit is disconnected from the inlet of the filter unit through the fourth water passage; in the second operating mode, the outlet of the scale inhibition solution generating unit is connected to the inlet of the filter unit through the fourth water passage.

23. The water purification system according to claim 21, characterized in that, In the second operating mode, the third waterway is disconnected, the first waterway is disconnected, and the fourth waterway is connected.

24. The water purification system according to claim 21, characterized in that, In the second operating mode, the first waterway is disconnected, and the fourth waterway is connected.

25. The water purification system according to claim 20, characterized in that, In the first operating mode, the scale inhibitor solution generation unit can achieve intermittent communication with the first water circuit through the fluid output regulating mechanism, so that the scale inhibitor solution is intermittently output to the first water circuit.

26. The water purification system according to claim 7 or 20, characterized in that, The water purification system also includes: A detection unit is used to detect the concentration of the scale inhibitor solution output by the scale inhibitor solution generation unit. The water purification system determines the ratio of the time that the outlet of the scale inhibitor solution generation unit is connected to and disconnected from the inlet of the filter unit or the first water circuit in the first working mode based on the concentration of the scale inhibitor solution detected by the detection unit.

27. The water purification system according to claim 26, characterized in that, The detection unit includes at least a TDS detection unit.

28. The water purification system according to claim 5, characterized in that, The water purification system includes a recirculating water return path that connects the water inlet of the filter unit to the scale inhibitor solution generation unit.

29. The water purification system according to claim 28, characterized in that, The water purification system has a third operating mode, in which the purified water generated by the filtration unit is input into the receiving chamber of the scale inhibition solution generating unit.

30. The water purification system according to claim 28, characterized in that, The return water path, the filtration unit, the scale inhibitor solution generation unit, and at least a portion of the first water path can form a circulating water path; The scale inhibition solution generation unit can be connected to the inlet of the filter unit through the first valve; One end of the return water path is connected to the outlet of the scale inhibitor solution generation unit; The water purification system also includes a pump device installed on the circulating water path; The water purification system has a third working mode. In the third working mode, the circulating water circuit is in a connected state, the outlet of the scale inhibition solution generation unit is disconnected from the inlet of the filter unit, and the pump device is in an on state.

31. The water purification system according to claim 28, characterized in that, The outlet of the scale inhibitor solution generating unit can be connected to the inlet of the filter unit through the fluid output regulating mechanism, or the fluid output regulating mechanism is located at the inlet of the scale inhibitor solution generating unit or upstream of the inlet of the scale inhibitor solution generating unit. One end of the return water path is connected upstream of the inlet of the scale inhibitor solution generation unit; The return water path, the filtration unit, and the scale inhibitor solution generation unit can form a circulating water path; The water purification system also includes a pump device installed on the circulating water path; The water purification system has a third working mode, in which the circulating water circuit is in a connected state and the pump device is in an on state.

32. The water purification system according to claim 8, characterized in that, The water purification system also includes: A water storage unit for storing purified water that can be connected to the purified water inlet of the filter unit; A water return path that can be switched on and off is provided, and the water storage unit is connected to the scale inhibitor solution generation unit through the water return path. The water purification system has a third working mode, in which purified water in the water storage unit is input to the scale inhibition solution generation unit through the return water path.

33. The water purification system according to claim 32, characterized in that, The scale inhibitor solution generating unit has a drain outlet. In the third working mode, the purified water in the water storage unit is input to the scale inhibitor solution generating unit through the return water path, and the original water in the scale inhibitor solution generating unit is discharged from the drain outlet.

34. The water purification system according to claim 32, characterized in that, In the third working mode, the purified water in the water storage unit is input to the scale inhibition solution generation unit through the return water path, and the original water in the scale inhibition solution generation unit is discharged from the wastewater outlet of the filter unit.

35. The water purification system according to claim 30 or 31, characterized in that, The wastewater outlet is connected to a wastewater discharge path, and the wastewater discharge path is equipped with a functional valve that has on / off function and wastewater ratio function.

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