Water purification system and water purifier

Abstract

The present invention discloses a water purification system, which includes a membrane filter element. A flow meter is provided on the water inlet pipe of the membrane filter element. The flow meter is used to detect the water flow rate. The flow meter controls the scale inhibitor to open according to the attenuation of the purified water flow rate to pre-treat the water. The present invention also discloses a water purifier, including the water purification system described above. The water purification system provided by the present invention uses a flow meter to judge the water quality. In areas with good water quality, the scale inhibitor is not turned on during normal water production to ensure that soft water is retained in the concentrated water side of the membrane filter element, so that the membrane filter element is not easy to scale and block; in areas with poor water quality, the scale inhibitor is turned on. After the water passes through the scale inhibitor, it is not easy to scale due to the action of the scale inhibitor, which effectively reduces the risk of scaling and extends the service life of the membrane filter element of the water purification system.

Description

Technical Field

[0001] The present invention belongs to the technical field of water purifier equipment, and in particular relates to a water purification system and a water purifier. Background Art

[0002] At present, the water production rate of water purifiers on the market is generally low. Due to the diversity of water quality in different regions, the water quality changes in different seasons are different. The same water purifier design can achieve high recovery rate and long life in areas with good water quality; but in areas with poor water quality, high recovery rate models are prone to cause membrane filter element fouling, and the water flow rate decays too quickly, requiring frequent replacement of the filter element, shortening the life of the filter element. Reducing the recovery rate of the water purifier will correspondingly reduce the water efficiency level.

[0003] Therefore, it is urgent to design a water purification system and a water purifier to solve the above-mentioned problem that the membrane filter element is blocked and needs to be replaced frequently, which affects the life of the whole machine. Summary of the invention

[0004] In order to solve the technical problem mentioned in the background technology that the membrane filter element is blocked and needs to be replaced frequently, which affects the life of the whole machine, a water purification system and a water purifier are provided to solve the above problem.

[0005] In order to achieve the above purpose, the specific technical solutions of the water purification system and water purifier are as follows:

[0006] A water purification system includes a membrane filter element. A flow meter is arranged on the water inlet pipe of the membrane filter element. The flow meter is used to detect the water flow rate. The flow meter controls the scale-inhibiting filter element to open according to the attenuation of the water flow rate to pre-treat the water.

[0007] Furthermore, the flow meter includes a first flow meter and a second flow meter, the first flow meter is arranged upstream of the anti-scaling filter element, and the second flow meter is arranged downstream of the membrane filter element, the first flow meter is used to collect the inlet flow, and the second flow meter is used to collect the clean water flow.

[0008] Furthermore, a first solenoid valve is provided upstream of the anti-scaling filter element. The first solenoid valve is electrically connected to the controller. The controller opens or closes the anti-scaling filter element by controlling the first solenoid valve.

[0009] Furthermore, it also includes a second solenoid valve, which is arranged upstream of the membrane filter element. The second solenoid valve is electrically connected to the controller, and the controller opens or closes the membrane filter element by controlling the second solenoid valve.

[0010] Furthermore, the first solenoid valve and the anti-scaling filter element are arranged in series, and the first solenoid valve, the anti-scaling filter element and the second solenoid valve on the water inlet pipe are arranged in parallel.

[0011] Furthermore, a pressure-stabilizing pump is provided on the water inlet pipe, and the pressure-stabilizing pump is used to stabilize the water flow rate.

[0012] Furthermore, a third solenoid valve is provided on the wastewater pipe of the membrane filter element. The third solenoid valve is divided into a first gear and a second gear. When the third solenoid valve is in the first gear, it is a high recovery mode, and when the third solenoid valve is in the second gear, it is a low recovery mode.

[0013] Furthermore, it also includes a pre-filter element, which is arranged upstream of the anti-scaling filter element and is used for preliminary filtering of water.

[0014] Furthermore, it also includes a post-filter element, which is arranged on the water outlet pipe of the membrane filter element and is used for filtering the water again.

[0015] A water purifier comprises the water purification system as described above.

[0016] The water purification system and water purifier of the present invention have the following advantages:

[0017] The water quality is judged by a flow meter. In areas with good water quality, the anti-scaling filter element is not turned on during normal water production to ensure that soft water is retained in the concentrated water side of the membrane filter element, making it less likely for the membrane filter element to scale and become blocked. In areas with poor water quality, the anti-scaling filter element is turned on, and after water passes through the anti-scaling filter element, it is less likely to scale due to the scale inhibitor, effectively reducing the risk of scaling and extending the service life of the membrane filter element in the water purification system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of the water purification system of the present invention.

[0019] Description of the markings in the figure:

[0020] 1. Membrane filter element; 2. Water inlet pipe; 21. Main branch; 22. Branch road; 3. Water outlet pipe; 4. Wastewater pipe; 5. First flow meter; 6. Second flow meter; 7. Anti-scaling filter element; 8. Second solenoid valve; 9. First solenoid valve; 10. Fourth solenoid valve; 11. Pre-filter element; 12. Post-filter element; 13. WiFi module; 14. Third solenoid valve; 15. Pressure-stabilizing pump. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0022] The technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0023] Please refer to the attached Figure 1 The water purification system and water purifier of the present invention are described.

[0024] The water purification system mainly has two modes: water production mode and flushing mode. A membrane filter element 1 is provided on the water purification system, and the membrane filter element 1 is connected to the water inlet, the water outlet and the wastewater outlet. The membrane filter element 1 and the water inlet are connected through the water inlet pipe 2, the membrane filter element 1 and the water outlet are connected through the water outlet pipe 3, and the membrane filter element 1 and the wastewater outlet are connected through the wastewater pipe 4. A pre-filter element 11 is provided on the water inlet pipe 2, and a post-filter element 12 is provided on the water outlet pipe 3. The membrane filter element 1 is placed between the pre-filter element 11 and the post-filter element 12. Water enters through the water inlet, passes through the pre-filter element 11 first, and then passes through the membrane filter element 1 and the post-filter element 12, and is discharged through the water outlet for use by users. When passing through the membrane filter element 1, a part of the wastewater generated passes through the wastewater pipe 4 and is discharged from the wastewater outlet. In this embodiment, the pre-filter element 11 is the first-stage water treatment device of the water purification system, including but not limited to PP cotton filter element, carbon rod, ultrafiltration membrane filter element 1 and ceramic filter element, which is used to filter large particles in the water and remove residual chlorine, etc. The post-filter element 12 includes but is not limited to post-carbon rod, ultrafiltration membrane, etc., which is used to filter impurities remaining after the water flows out of the membrane filter element 1 to improve the taste.

[0025] When the water purification system performs the water production mode and the flushing mode under the above circumstances, due to the differences in regional water quality, the same water purification system has a high recovery rate and a long service life in areas with good water quality; in areas with poor water quality, due to the poor water quality, the water purification system is prone to membrane blockage, the life of the membrane filter element 1 is shortened, the recovery rate of the water purification system is reduced, and the water efficiency level is correspondingly reduced, so that the speed of water produced by the water purification system is also different, affecting the user experience.

[0026] Therefore, in order to meet the high recovery rate and long life of the water purification system under the water quality conditions in different regions, the water purification system needs to be further designed and modified. A flow meter is designed on the water purification system to detect the flow of water, and the collected information is transmitted to the controller in the cloud through the WiFi module 13. The anti-scaling filter element 7 set on the water purification system is turned on or off by the controller to further filter the water, effectively preventing the membrane filter element 1 from being blocked, and ensuring the high recovery rate and long life of the water purification system. In this embodiment, the anti-scaling filter element 7 is used to prevent the calcium and magnesium ions in the water from forming crystals and causing fouling and clogging of the membrane. The membrane filter element 1 can filter most of the impurities in the water.

[0027] like Figure 1As shown, the water purification system and water purifier in the present invention are provided with a flow meter in the water purification system for detecting the flow of water. The value measured by the flow meter is transmitted to the cloud database through the WiFi module 13. The database is combined with the local water quality over the years to determine whether to turn on the scale-proof filter element 7 set in the water purification system. In areas with poor water quality, the scale-proof filter element 7 is turned on, and the water first passes through the scale-proof filter element 7 to become soft water that is not easy to crystallize, thereby preventing excessive stains from accumulating on the surface of the membrane filter element 1 and extending the service life of the entire filter element. In areas with good water quality, the scale-proof filter element 7 is not turned on during normal water production. The scale-proof filter element 7 is turned on only in the flushing mode. The scale-proof filter element 7 is turned on in the flushing mode to ensure that the water on the concentrated water side of the membrane filter element 1 is soft water, so that the membrane filter element 1 is not easily blocked by dirt, thereby extending the service life of the membrane filter element 1 of the water purification system.

[0028] Specifically, Figure 1 As shown, the flowmeter includes a first flowmeter 5 and a second flowmeter 6. The first flowmeter 5 is arranged upstream of the anti-scaling filter element 7, specifically, the first flowmeter 5 is arranged between the pre-filter element 11 and the anti-scaling filter element 7, and the second flowmeter 6 is arranged downstream of the membrane filter element 1, specifically, the second flowmeter 6 is arranged between the membrane filter element 1 and the post-filter element 12. The first flowmeter 5 is used to collect the inlet water flow, and the second flowmeter 6 is used to collect the clean water flow.

[0029] Further, if Figure 1 As shown, a first solenoid valve 9 is provided upstream of the anti-scaling filter element, and the first solenoid valve 9 is electrically connected to the controller, and the controller controls the first solenoid valve 9 to open or close the anti-scaling filter element 7. The water purification system also includes a second solenoid valve 8, which is provided upstream of the membrane filter element 1, and the second solenoid valve 8 is electrically connected to the controller, and the controller controls the second solenoid valve 8 to open or close the membrane filter element 1.

[0030] Specifically, Figure 1 As shown, the first solenoid valve 9 is arranged in series with the anti-scaling filter element 7, and the first solenoid valve 9, the anti-scaling filter element 7 and the second solenoid valve 8 on the water inlet pipe 2 are arranged in parallel. The water inlet pipe 2 includes a main branch 21 and a branch 22, the branch 22 is arranged between the pre-filter element 11 and the membrane filter element 1, the anti-scaling filter element 7 is arranged on the branch 22, and the first solenoid valve 9 is also arranged on the branch 22, the first solenoid valve 9 is used to open or close the anti-scaling filter element 7, and the second solenoid valve 8 is arranged on the main branch 21 in parallel with the first solenoid valve 9 and the anti-scaling filter element 7, and the second solenoid valve 8 is used to control the on and off of water between the pre-filter element 11 and the membrane filter element 1, and a pressure-stabilizing pump 15 is also arranged on the main branch 21, and the pressure-stabilizing pump 15 is placed between the second solenoid valve 8 and the membrane filter element 1. The pressure-stabilizing pump 15 can adjust the operating power of the pump according to the information measured by the first flowmeter 5 and the second flowmeter 6 to achieve different system requirements.

[0031] Specifically, when the water purification system is in the water production mode, the second solenoid valve 8, the third solenoid valve 14 and the fourth solenoid valve 10 are opened, and the first solenoid valve 9 is closed. The water passes through the pre-filter element 11, the membrane filter element 1 and the post-filter element 12 to obtain pure water, which is discharged from the water outlet. The first flow meter 5 and the second flow meter 6 start to collect data and transmit it to the WiFi module 13. The data interacts with the database via the WiFi module 13 to obtain the water purification flow attenuation coefficient. The water purifier flow coefficient under different water quality conditions stored in the database and the local water quality historical data are combined to judge the local water quality and then judge whether to turn on the scale inhibitor filter 7.

[0032] In this embodiment, the third solenoid valve 14 is divided into a first gear and a second gear. When the third solenoid valve 14 is in the first gear, it is in a high recovery mode, and when the third solenoid valve 14 is in the second gear, it is in a low recovery mode. When the water quality is good, the flow meter attenuation coefficient is less than the first set value K≤K1, the first solenoid valve 9 is closed, the second solenoid valve 8 is opened, and the third solenoid valve 14 is opened in the first gear. At this time, the system operates at a high recovery rate; when the water quality is poor, the flow meter attenuation coefficient is placed between the first set value and the second set value K1<K<K2, the second solenoid valve 8 is closed, the first solenoid valve 9 is opened, and the third solenoid valve 14 is opened in the first gear. At this time, the system operates at a high recovery rate; when the water quality is poor, the flow meter attenuation coefficient is greater than the second set value K≥K2, the second solenoid valve 8 is closed, the first solenoid valve 9 is opened, and the third solenoid valve 14 is opened in the second gear. At this time, the system operates at a low recovery rate.

[0033] In areas with poor water quality, during the water production process of the water purifier, the scale-preventing filter element 7 is always open. When the scale-preventing filter element 7 is opened, the second solenoid valve 8 is closed, and the first solenoid valve 9, the third solenoid valve 14 and the fourth solenoid valve 10 are opened. The water passes through the pre-filter element 11, the scale-preventing filter element 7, the membrane filter element 1 and the post-filter element 12 in sequence to obtain pure water, which is discharged from the water outlet.

[0034] In ordinary areas and areas with good water quality, during the water production process of the water purifier, the scale-inhibiting filter element 7 is normally closed, the second solenoid valve 8, the third solenoid valve 14 and the fourth solenoid valve 10 are opened, the first solenoid valve 9 is closed, and the water passes through the pre-filter element 11, the membrane filter element 1 and the post-filter element 12 to produce pure water, which is discharged from the water outlet.

[0035] After the water purification system has been used for a period of time, the water purification system needs to enter the normal flushing mode. The purpose of entering the flushing mode is to flush out the concentrated water of the membrane filter element 1 and replace the concentrated water of the membrane filter element 1 with water that is not easy to scale. Therefore, in the flushing mode, in order to prevent the membrane filter element 1 from being blocked by dirt, the anti-scaling filter element 7 also needs to be opened to filter the flushing water. At this time, the first solenoid valve 9, the third solenoid valve 14 and the fourth solenoid valve 10 are opened, and the second solenoid valve 8 is closed. The flushing water enters from the water inlet, and the flushing water passes through the pre-filter element 11 and the anti-scaling filter element 7 in turn to reach the concentrated water side of the membrane filter element 1, flushing out the concentrated water on the concentrated water side of the membrane filter element 1, replacing the concentrated water of the membrane filter element 1 with water that is not easy to scale, and avoiding the membrane filter element 1 from being blocked. When the third solenoid valve 14 is in the flushing mode, the third solenoid valve 13 is neither set to the first gear nor to the second gear, but the third solenoid valve 13 is fully opened to make the waste water pipe 4 become a large-hole conduction, and the waste water after flushing is discharged from the waste water outlet through the waste water pipe 4. The waste water outlet is directly connected to the sewer, and the waste water outlet can also be connected to a bucket for collection.

[0036] Further, if Figure 1 As shown, a pressure-stabilizing pump 15 is also provided on the water inlet pipe 2 for stabilizing the water flow rate.

[0037] The present invention also provides a water purifier, comprising the water purification system as described above.

[0038] It is to be understood that the present invention is described by some embodiments, and it is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A water purification system, characterized in that: It includes a membrane filter element, and a flow meter is arranged on the water inlet pipe of the membrane filter element, and the flow meter is used to detect the water flow rate. The flow meter controls the scale-preventing filter element to open according to the attenuation of the water flow rate, so as to pre-treat the water; A first solenoid valve is arranged upstream of the anti-scaling filter element, the first solenoid valve is electrically connected to the controller, and the controller controls the first solenoid valve to open or close the anti-scaling filter element; and a second solenoid valve is also included, the second solenoid valve is arranged upstream of the membrane filter element, the second solenoid valve is electrically connected to the controller, and the controller controls the second solenoid valve to open or close the membrane filter element; A third solenoid valve is provided on the wastewater pipe of the membrane filter element. The third solenoid valve is divided into a first gear and a second gear. When the third solenoid valve is in the first gear, it is in a high recovery mode, and when the third solenoid valve is in the second gear, it is in a low recovery mode; When the water quality is good, the flow meter attenuation coefficient is less than the first set value K≤K1, the first solenoid valve is closed, the second solenoid valve is opened, and the third solenoid valve is opened in the first gear, and the system operates at a high recovery rate; when the water quality is poor, the flow meter attenuation coefficient is placed between the first set value and the second set value K1<K<K2, the second solenoid valve is closed, the first solenoid valve is opened, and the third solenoid valve is opened in the first gear, and the system operates at a high recovery rate; when the water quality is poor, the flow meter attenuation coefficient is greater than the second set value K≥K2, the second solenoid valve is closed, the first solenoid valve is opened, and the third solenoid valve is opened in the second gear, and the system operates at a low recovery rate; The first solenoid valve and the anti-scaling filter element are arranged in series, and the first solenoid valve, the anti-scaling filter element and the second solenoid valve on the water inlet pipe are arranged in parallel.

2. The water purification system according to claim 1, characterized in that: The flowmeter includes a first flowmeter and a second flowmeter. The first flowmeter is arranged upstream of the anti-scaling filter element, and the second flowmeter is arranged downstream of the membrane filter element. The first flowmeter is used to collect the inlet flow, and the second flowmeter is used to collect the clean water flow.

3. The water purification system according to claim 1, characterized in that: A pressure-stabilizing pump is also provided on the water inlet pipe, and the pressure-stabilizing pump is used to stabilize the water flow rate.

4. The water purification system according to claim 1, characterized in that: It also includes a pre-filter element, which is arranged upstream of the anti-scaling filter element and is used for performing preliminary filtration on water.

5. The water purification system according to claim 1, characterized in that: It also includes a post-filter element, which is arranged on the water outlet pipe of the membrane filter element and is used for filtering the water again.

6. A water purifier, characterized in that: Comprising the water purification system as claimed in any one of claims 1 to 5.

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