Reverse osmosis water purifier with long-acting filter element

Abstract

The utility model discloses a reverse osmosis water purifier with a long-acting filter element, which belongs to the technical field of water purification and comprises a waterway board. A front composite filter element, a booster pump, an RO (Reverse Osmosis) membrane filter element, a rear activated carbon filter element, a raw water inlet, a wastewater outlet, a pure water outlet, a first electromagnetic valve, a second electromagnetic valve, a third electromagnetic valve, a fourth electromagnetic valve and a fifth electromagnetic valve which are communicated with one another are arranged on the waterway plate. According to the long-acting filter element reverse osmosis water purifier, raw water can be effectively and thoroughly purified, meanwhile, the front composite filter element and the RO membrane filter element can be washed at the same time or alternatively according to use requirements, the use experience of a user is improved, and the use cost of the user is reduced.

Description

Technical Field

[0001] This utility model relates to the field of water purification technology, specifically a long-lasting reverse osmosis water purifier with a filter element. Background Technology

[0002] Reverse osmosis (RO) filter cartridges are the core of water purifiers, filtering raw water to obtain pure water. During use, the RO membrane in a RO water purifier generates wastewater. Over time, contamination accumulates on the wastewater end of the RO membrane, weakening its performance and leading to problems such as decreased filter flux and substandard desalination rates, affecting purification efficiency. Furthermore, once contamination reaches a certain level, it can cause complete membrane failure. However, the filtration capacity of the RO membrane itself may not have weakened. Cleaning the membrane element can restore its performance, extending its lifespan and reducing replacement frequency and operating costs, as illustrated by the pure water treatment device disclosed in Chinese Patent No. CN201410443613.2.

[0003] However, the above-mentioned pure water treatment device can only clean the reverse osmosis filter cartridge. It cannot clean other filter cartridges (such as the pre-filter PP cotton cartridge and the post-filter activated carbon cartridge), which requires users to frequently replace the filter cartridges. This not only makes daily maintenance extremely inconvenient and affects the user experience, but improper replacement can also damage the machine and increase the user's operating costs.

[0004] Therefore, further improvements are necessary. Utility Model Content

[0005] The present invention aims to provide a long-lasting reverse osmosis water purifier with a filter cartridge to overcome the shortcomings of the prior art.

[0006] A long-lasting reverse osmosis water purifier designed for this purpose includes a water circuit board, on which are installed a pre-filter, a booster pump, an RO membrane filter, a post-activated carbon filter, a raw water inlet, a wastewater outlet, a pure water outlet, a first solenoid valve, a second solenoid valve, a third solenoid valve, a fourth solenoid valve, and a fifth solenoid valve.

[0007] The raw water inlet, the first solenoid valve, and the pre-filter are interconnected.

[0008] The pre-filter, the second solenoid valve, and the third solenoid valve are interconnected.

[0009] The first solenoid valve, the second solenoid valve, and the booster pump are interconnected.

[0010] The RO membrane filter, the third solenoid valve, and the post-activated carbon filter are interconnected.

[0011] The fifth electromagnetic valve, the fourth electromagnetic valve and the wastewater discharge port are in communication with each other.

[0012] The booster pump, the RO membrane filter element and the post-activated carbon filter element are in communication with each other.

[0013] The front composite filter element is also in communication with the fifth electromagnetic valve.

[0014] The RO membrane filter element is also in communication with the fourth electromagnetic valve.

[0015] The waterway plate is provided with a front filter element assembly groove, an RO membrane filter element assembly groove and a post filter element assembly groove, wherein the front composite filter element is disassembled on the front filter element assembly groove, the RO membrane filter element is disassembled on the RO membrane filter element assembly groove, and the post-activated carbon filter element is disassembled on the post filter element assembly groove.

[0016] The front filter element assembly groove is provided with a front raw water inlet, a front filtered water outlet and a front backwash water discharge port, the RO membrane filter element assembly groove is provided with an RO membrane water inlet, an RO membrane filtered water outlet and an RO membrane backwash water discharge port, and the post filter element assembly groove is provided with a post water inlet and a post filtered water outlet.

[0017] The front raw water inlet is in communication with the raw water inlet and the first electromagnetic valve, the front filtered water outlet is in communication with the second electromagnetic valve and the third electromagnetic valve, the front backwash water discharge port is in communication with the fifth electromagnetic valve, the RO membrane water inlet is in communication with the water outlet end of the booster pump, the RO membrane filtered water outlet is in communication with the third electromagnetic valve and the post water inlet, the RO membrane backwash water discharge port is in communication with the fourth electromagnetic valve, and the post filtered water outlet is in communication with the pure water outlet.

[0018] The waterway plate is provided with a raw water flow channel, a first electromagnetic valve water flow channel, a fifth electromagnetic valve water flow channel and a 1-2 electromagnetic valve water flow channel.

[0019] The raw water inlet is arranged on the raw water flow channel, the raw water flow channel is in communication with the first electromagnetic valve water flow channel and the front raw water inlet, the first electromagnetic valve water flow channel is further provided with a first electromagnetic valve water inlet, the water inlet end of the first electromagnetic valve is in communication with the first electromagnetic valve water inlet, the fifth electromagnetic valve water flow channel is in communication with the front backwash water discharge port and is provided with a fifth electromagnetic valve water inlet, the water inlet end of the fifth electromagnetic valve is in communication with the fifth electromagnetic valve water inlet, and the 1-2 electromagnetic valve water flow channel is provided with a first electromagnetic valve outlet and a second electromagnetic valve outlet, the water outlet end of the first electromagnetic valve is in communication with the first electromagnetic valve outlet, and the water outlet end of the second electromagnetic valve is in communication with the second electromagnetic valve outlet.

[0020] The waterway plate is provided with a second and third solenoid valve water flow channel, a third solenoid valve water flow channel, the second and third solenoid valve water flow channel is communicated with the pre-filtered water outlet, and the second and third solenoid valve water flow channel is provided with a second solenoid valve water inlet and a third solenoid valve water outlet, the water inlet of the second solenoid valve is communicated with the second solenoid valve water inlet, the water outlet of the third solenoid valve is communicated with the third solenoid valve water outlet, the third solenoid valve water flow channel is communicated with the post water inlet, and the third solenoid valve water flow channel is provided with a third solenoid valve water inlet, and the third solenoid valve water inlet is communicated with the RO membrane filtered water outlet and the water inlet of the third solenoid valve.

[0021] The waterway plate is provided with a fourth and fifth solenoid valve water flow channel and a fourth solenoid valve water flow channel, the fourth and fifth solenoid valve water flow channel is provided with a fourth solenoid valve water outlet and a fifth solenoid valve water outlet, the fourth solenoid valve water flow channel is communicated with the RO membrane backwashing water outlet, and the fourth solenoid valve water flow channel is provided with a fourth solenoid valve water inlet, the water inlet of the fourth solenoid valve is communicated with the fourth solenoid valve water inlet, the water outlet of the fourth solenoid valve is communicated with the fourth solenoid valve water outlet, the water outlet of the fifth solenoid valve is communicated with the fifth solenoid valve water outlet, and the wastewater outlet is arranged on the fourth and fifth solenoid valve water flow channel.

[0022] The waterway plate is provided with a pure water flow channel, and a pure water outlet is arranged on the pure water flow channel.

[0023] The waterway plate is provided with a pure water flow channel, and a pure water outlet is arranged on the pure water flow channel.

[0024] The waterway plate is provided with a pure water flow channel, and a pure water outlet is arranged on the pure water flow channel.

[0025] A working method of a water purifier, comprising the long-acting filter cartridge reverse osmosis water purifier.

[0026] The working process of normal filtration is as follows:

[0027] The raw water enters the raw water flow channel, the first electromagnetic valve water flow channel, the preposed raw water inlet, and the preposed composite filter core in sequence through the raw water inlet. The raw water is pre-filtered by the preposed composite filter core, enters the second and third electromagnetic valve water flow channel through the pre-filtered water outlet, and enters the first and second electromagnetic valve water flow channel through the second electromagnetic valve inlet, the second electromagnetic valve, and the second electromagnetic valve outlet in sequence. Subsequently, the pre-filtered water enters the RO membrane filter core through the booster inlet, the booster pump, the booster outlet, the booster outlet flow channel, and the RO membrane inlet. The pre-filtered water is filtered by the RO membrane filter core, enters the third electromagnetic valve water flow channel through the RO-filtered water outlet, enters the post-filtered activated carbon filter core through the post-filtered water outlet, and finally flows out from the pure water outlet for use by the user. In this process, the first electromagnetic valve, the third electromagnetic valve, the fourth electromagnetic valve, and the fifth electromagnetic valve are in a closed state, and the second electromagnetic valve is in an open state.

[0028] The flushing process of the RO membrane filter core is as follows:

[0029] The raw water enters the raw water flow channel, the first electromagnetic valve water flow channel, the preposed raw water inlet, and the preposed composite filter core in sequence through the raw water inlet. The raw water is pre-filtered by the preposed composite filter core, enters the second and third electromagnetic valve water flow channel through the pre-filtered water outlet, and enters the first and second electromagnetic valve water flow channel through the second electromagnetic valve inlet, the second electromagnetic valve, and the second electromagnetic valve outlet in sequence. Subsequently, the pre-filtered water enters the RO membrane filter core through the booster inlet, the booster pump, the booster outlet, the booster outlet flow channel, and the RO membrane inlet, and the RO membrane filter core is cleaned in reverse. The cleaned RO membrane waste water enters the fourth electromagnetic valve water flow channel through the RO membrane backwash drain, enters the fourth and fifth electromagnetic valve water flow channel through the fourth electromagnetic valve inlet, the fourth electromagnetic valve, and the fourth electromagnetic valve outlet in sequence, and is finally discharged through the waste water discharge outlet. In this process, the first electromagnetic valve, the third electromagnetic valve, and the fifth electromagnetic valve are in a closed state, and the second electromagnetic valve and the fourth electromagnetic valve are in an open state.

[0030] The flushing process of the preposed composite filter core is as follows:

[0031] The raw water enters the raw water flow channel, the first electromagnetic valve water flow channel, the first electromagnetic valve water inlet, the first electromagnetic valve, the first electromagnetic valve water outlet, and then enters the two-three electromagnetic valve water flow channel, and then enters the pre-composite filter element through the pre-filter water outlet, and the pre-composite filter element is cleaned in reverse, and the pre-waste water after cleaning enters the four-five electromagnetic valve water flow channel through the pre-backwashing drain outlet, the fifth electromagnetic valve water flow channel, the fifth electromagnetic valve water inlet, the fifth electromagnetic valve, and the fifth electromagnetic valve water outlet, and is finally discharged through the waste water drain outlet; in the process, the second electromagnetic valve and the fourth electromagnetic valve are in the closed state, and the first electromagnetic valve, the third electromagnetic valve and the fifth electromagnetic valve are in the open state.

[0032] The pre-composite filter element, the booster pump, the RO membrane filter element, the post-activated carbon filter element, the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve, the fourth electromagnetic valve and the fifth electromagnetic valve are connected, so that the raw water can be pre-filtered through the pre-composite filter element, then increased by the booster pump, then RO filtered through the RO membrane filter element, and finally post-filtered through the post-activated carbon filter element for the user to use, thereby meeting the user's use demand for complete purification of raw water, and the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve, the fourth electromagnetic valve and the fifth electromagnetic valve are opened and closed at different positions to change the water flow direction on the waterway board, so that the user can flush the pre-composite filter element and the RO membrane filter element at the same time or selectively according to the use demand, which not only effectively simplifies the waterway structure of the waterway board, but also facilitates the daily cleaning and maintenance of the pre-composite filter element and the RO membrane filter element, thereby effectively overcoming the disadvantages that the existing technology needs to be disassembled, replaced and stopped to flush, thereby prolonging the service life of the pre-composite filter element and the RO membrane filter element and reducing the use cost. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 It is an assembly structure schematic view of an embodiment of the utility model.

[0034] Figure 2 It is another view assembly structure schematic view of an embodiment of the utility model.

[0035] Figure 3 It is an exploded structure schematic view of an embodiment of the utility model.

[0036] Figure 4 is another view angle exploded structure schematic view of one embodiment of the present application.

[0037] Figure 5 is a top view structure schematic view of one embodiment of the present application.

[0038] Figure 6 is a structure schematic view of a waterway board.

[0039] Figure 7 is a cutaway structure schematic view of a waterway board.

[0040] Figure 8 is a normal filtration working schematic view.

[0041] Figure 9 is a RO membrane filter core flushing working schematic view.

[0042] Figure 10 is a pre-composite filter core flushing working schematic view. DETAILED DESCRIPTION

[0043] In order to make the above object, features and advantages of the present application more apparent, specific embodiments of the present application are described in detail below with reference to the accompanying drawings. In the following description, a lot of specific details are set forth in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0044] The present application is further described below with reference to the accompanying drawings and embodiments.

[0045] Referring to Figures 1-10 , the long-acting filter core reverse osmosis water purifier comprises a waterway board 1, and the waterway board 1 is provided with a pre-composite filter core 2, a booster pump 3, a RO membrane filter core 4, a post-activated carbon filter core 5, a raw water inlet 1.1, a waste water outlet 1.2, a pure water outlet 1.3, a first electromagnetic valve 100, a second electromagnetic valve 200, a third electromagnetic valve 300, a fourth electromagnetic valve 400 and a fifth electromagnetic valve 500.

[0046] The raw water inlet 1.1, the first electromagnetic valve 100 and the pre-composite filter core 2 are in communication with each other.

[0047] The pre-composite filter core 2, the second electromagnetic valve 200 and the third electromagnetic valve 300 are in communication with each other.

[0048] The first electromagnetic valve 100, the second electromagnetic valve 200 and the booster pump 3 are in communication with each other.

[0049] The RO membrane filter core 4, the third electromagnetic valve 300 and the post-activated carbon filter core 5 are in communication with each other.

[0050] The fifth electromagnetic valve 500, the fourth electromagnetic valve 400 and the wastewater discharge port 1.2 are in communication with each other.

[0051] The booster pump 3, the RO membrane filter core 4 and the post-activated carbon filter core 5 are in communication with each other.

[0052] The pre-composite filter core 2 is also in communication with the fifth electromagnetic valve 500.

[0053] The RO membrane filter core 4 is also in communication with the fourth electromagnetic valve 400.

[0054] In this embodiment, the pre-composite filter core 2, the booster pump 3, the RO membrane filter core 4, the post-activated carbon filter core 5, the first electromagnetic valve 100, the second electromagnetic valve 200, the third electromagnetic valve 300, the fourth electromagnetic valve 400 and the fifth electromagnetic valve 500 are connected, so that the raw water can be pre-filtered through the pre-composite filter core 2, then increased by the booster pump 3, then RO-filtered through the RO membrane filter core 4, and finally post-filtered through the post-activated carbon filter core 5 for use by the user, thereby meeting the user's use demand for complete purification of the raw water. In addition, the first electromagnetic valve 100, the second electromagnetic valve 200, the third electromagnetic valve 300, the fourth electromagnetic valve 400 and the fifth electromagnetic valve 500 are opened and closed at different positions to change the water flow direction on the water circuit board 1, so that the user can simultaneously or selectively flush the pre-composite filter core 2 and the RO membrane filter core 4 according to the use demand. This not only effectively simplifies the water circuit structure of the water circuit board 1, but also facilitates the daily cleaning and maintenance of the pre-composite filter core 2 and the RO membrane filter core 4, thereby effectively overcoming the drawbacks of the prior art that the flushing can only be performed under the condition of disassembly, replacement and shutdown, thereby prolonging the service life of the pre-composite filter core 2 and the RO membrane filter core 4 and reducing the use cost.

[0055] The water circuit board 1 is provided with a pre-filter core assembly groove X, an RO membrane filter core assembly groove Y and a post-filter core assembly groove Z. The pre-composite filter core 2 is detachably arranged on the pre-filter core assembly groove X, the RO membrane filter core 4 is detachably arranged on the RO membrane filter core assembly groove Y, and the post-activated carbon filter core 5 is detachably arranged on the post-filter core assembly groove Z.

[0056] The pre-filter core assembly groove X is provided with a pre-raw water inlet X1, a pre-filtered water outlet X2 and a pre-backwashing water outlet X3. The RO membrane filter core assembly groove Y is provided with an RO membrane water inlet Y1, an RO membrane filtered water outlet Y2 and an RO membrane backwashing water outlet Y3. The post-filter core assembly groove Z is provided with a post-raw water inlet Z1 and a post-filtered water outlet Z2.

[0057] The preposed raw water inlet X1 is in communication with the raw water inlet 1.1 and the first electromagnetic valve 100, the preposed filter outlet X2 is in communication with the second electromagnetic valve 200 and the third electromagnetic valve 300, the preposed backwashing drain X3 is in communication with the fifth electromagnetic valve 500, the RO membrane inlet Y1 is in communication with the outlet of the booster pump 3, the RO membrane filter outlet Y2 is in communication with the third electromagnetic valve 300 and the postposed inlet Z1, the RO membrane backwashing drain Y3 is in communication with the fourth electromagnetic valve 400, and the postposed filter outlet Z2 is in communication with the pure water outlet 1.3.

[0058] The waterway plate 1 is provided with a raw water channel 110, a first electromagnetic valve water channel A, a fifth electromagnetic valve water channel E, and a first-second electromagnetic valve water channel AB.

[0059] The raw water inlet 1.1 is arranged on the raw water channel 110, the raw water channel 110 is in communication with the first electromagnetic valve water channel A and the preposed raw water inlet X1, the first electromagnetic valve water channel A is further provided with a first electromagnetic valve inlet A1, the water inlet of the first electromagnetic valve 100 is in communication with the first electromagnetic valve inlet A1, the fifth electromagnetic valve water channel E is in communication with the preposed backwashing drain X3 and is provided with a fifth electromagnetic valve inlet E1, the water inlet of the fifth electromagnetic valve is in communication with the fifth electromagnetic valve inlet E1, the first-second electromagnetic valve water channel AB is provided with a first electromagnetic valve outlet A2 and a second electromagnetic valve outlet B2, the water outlet of the first electromagnetic valve is in communication with the first electromagnetic valve outlet A2, and the water outlet of the second electromagnetic valve is in communication with the second electromagnetic valve outlet B2.

[0060] The waterway plate 1 is provided with a second-third electromagnetic valve water channel BC and a third electromagnetic valve water channel C, the second-third electromagnetic valve water channel BC is in communication with the preposed filter outlet X2 and is provided with a second electromagnetic valve inlet B1 and a third electromagnetic valve outlet C2, the water inlet of the second electromagnetic valve 200 is in communication with the second electromagnetic valve inlet B1, the water outlet of the third electromagnetic valve 300 is in communication with the third electromagnetic valve outlet C2, the third electromagnetic valve water channel C is in communication with the postposed inlet Z1 and is provided with a third electromagnetic valve inlet C1, the third electromagnetic valve inlet C1 is in communication with the RO membrane filter outlet Y2 and the water inlet of the third electromagnetic valve 300.

[0061] The waterway plate 1 is provided with a fourth-fifth electromagnetic valve water channel DE and a fourth electromagnetic valve water channel D, the fourth-fifth electromagnetic valve water channel DE is provided with a fourth electromagnetic valve outlet D2 and a fifth electromagnetic valve outlet E2, the fourth electromagnetic valve water channel D is in communication with the RO membrane backwashing drain Y3 and is provided with a fourth electromagnetic valve inlet D1, the water inlet of the fourth electromagnetic valve 400 is in communication with the fourth electromagnetic valve inlet D1, the water outlet of the fourth electromagnetic valve 400 is in communication with the fourth electromagnetic valve outlet D2, the water outlet of the fifth electromagnetic valve 500 is in communication with the fifth electromagnetic valve outlet E2, and the waste water drain 1.2 is arranged on the fourth-fifth electromagnetic valve water channel DE.

[0062] The waterway plate 1 is provided with a pure water flow channel 120, and a pure water outlet 1.3 is arranged on the pure water flow channel 120. The pure water flow channel 120 is in communication with the post-filtered water outlet Z2.

[0063] The one-two electromagnetic valve water flow channel AB is provided with a pressurized water inlet F1, and the waterway plate 1 is provided with a pressurized water outlet flow channel F. The pressurized water outlet flow channel F is in communication with the RO membrane water inlet Y1 and is provided with a pressurized water outlet F2. The pressurized water inlet F1 and the pressurized water outlet F2 are respectively connected with the communication pipes 6 and are in communication with the water inlet end and the water outlet end of the pressurized pump 3 through the communication pipes 6.

[0064] The raw water flow channel 110 is in perpendicular communication with the first electromagnetic valve water flow channel A. The one-two electromagnetic valve water flow channel AB is in parallel with the first electromagnetic valve water flow channel A and is arranged on the same side of the first electromagnetic valve water flow channel A. The two-three electromagnetic valve water flow channel BC is in perpendicular with the one-two electromagnetic valve water flow channel AB. The two-three electromagnetic valve water flow channel BC is arranged on the same axis with the third electromagnetic valve water flow channel C. The fifth electromagnetic valve water flow channel E is arranged on the same axis with the fourth electromagnetic valve water flow channel D. The fifth electromagnetic valve water flow channel E is in parallel with the two-three electromagnetic valve water flow channel BC and is arranged on the same side of the two-three electromagnetic valve water flow channel BC. The fourth electromagnetic valve water flow channel D is in parallel with the third electromagnetic valve water flow channel C and is arranged on the same side of the third electromagnetic valve water flow channel C. The four-five electromagnetic valve water flow channel DE is in parallel with the fourth electromagnetic valve water flow channel D and / or the fifth electromagnetic valve water flow channel E and is arranged on the same side of the fourth electromagnetic valve water flow channel D and / or the fifth electromagnetic valve water flow channel E. The pressurized water outlet flow channel F is in perpendicular with the four-five electromagnetic valve water flow channel DE. The pure water flow channel 120 is in perpendicular with the third electromagnetic valve water flow channel C.

[0065] In the embodiment, the one-two electromagnetic valve water flow channel AB is arranged on the same side of the first electromagnetic valve water flow channel A. The two-three electromagnetic valve water flow channel BC is arranged on the same axis with the third electromagnetic valve water flow channel C and is arranged close to the head of the third electromagnetic valve water flow channel C. The fifth electromagnetic valve water flow channel E is arranged on the same axis with the fourth electromagnetic valve water flow channel D and is arranged apart from the head of the fourth electromagnetic valve water flow channel D. The fifth electromagnetic valve water flow channel E is arranged on the same side of the two-three electromagnetic valve water flow channel BC. The fourth electromagnetic valve water flow channel D is arranged on the same side of the third electromagnetic valve water flow channel C. The four-five electromagnetic valve water flow channel DE is arranged on the same side of the fourth electromagnetic valve water flow channel D. In this way, the volume of the waterway plate 1 is effectively reduced, and the space occupancy of the water purifier is reduced.

[0066] In the embodiment, the waterway plate 1 is provided with assembly positions for the first electromagnetic valve 100, the second electromagnetic valve 200, the third electromagnetic valve 300, the fourth electromagnetic valve 400, and the fifth electromagnetic valve 500. The assembly positions correspond to the water inlets and outlets of the corresponding electromagnetic valves.

[0067] In this embodiment, the booster inlet F1, the booster outlet F2, the inlet and outlet of the booster pump 3 are respectively provided with quick connectors, and are connected with the communication pipe 6 through the quick connectors, so as to facilitate the disassembly and assembly of the waterway plate 1, the booster pump 3 and the communication pipe 6. In addition, the waterway plate 1 is further fixedly provided with a side assembly plate 8, and the booster pump 3 is fixed on the side assembly plate 8. A damping pad is further arranged between the booster pump 3 and the side assembly plate 8, so as to reduce the vibration and abnormal sound of the booster pump 3 during operation, and improve the assembly stability of the booster pump 3.

[0068] The working method of the long-acting filter cartridge reverse osmosis water purifier includes normal filtration, flushing of the RO membrane filter cartridge and flushing of the pre-composite filter cartridge.

[0069] The working process of the normal filtration is as follows:

[0070] The raw water enters the raw water flow channel 110, the first electromagnetic valve water flow channel A, the pre-composite filter cartridge 2 through the raw water inlet 1.1 in sequence, and is pre-filtered by the pre-composite filter cartridge 2. After the pre-filtered water enters the two-three electromagnetic valve water flow channel BC through the pre-filtered water outlet X2, it sequentially passes through the second electromagnetic valve inlet B1, the second electromagnetic valve 200 and the second electromagnetic valve outlet B2, and then enters the one-two electromagnetic valve water flow channel AB. Subsequently, the water sequentially passes through the booster inlet F1, the booster pump 3, the booster outlet F2, the booster outlet flow channel F and the RO membrane inlet Y1 to enter the RO membrane filter cartridge 4. The pre-filtered water is filtered by the RO membrane filter cartridge 4, and then enters the third electromagnetic valve water flow channel C through the RO membrane filtered water outlet Y2. The RO filtered water in the third electromagnetic valve water flow channel C enters the post-activated carbon filter cartridge 5 through the post-inlet Z1, and is post-filtered by the post-activated carbon filter cartridge 5. After the post-filtered water enters the pure water flow channel 120 through the post-filtered water outlet Z2, it finally flows out from the pure water outlet 1.3 for use by the user.

[0071] During this process, the first electromagnetic valve 100, the third electromagnetic valve 300, the fourth electromagnetic valve 400 and the fifth electromagnetic valve 500 are in a closed state, and the second electromagnetic valve 200 is in an open state.

[0072] The specific water flow direction is as shown by the arrows. Figure 8

[0073] The flushing working process of the RO membrane filter cartridge is as follows:

[0074] ​The raw water enters the raw water flow channel 110, the first electromagnetic valve water flow channel A, the first electromagnetic valve water inlet A1, the first electromagnetic valve 100, the first electromagnetic valve water outlet A2, and then enters the first and second electromagnetic valve water flow channel AB. Subsequently, the raw water enters the booster water inlet F1, the booster pump 3, the booster water outlet F2, the booster water flow channel F, the RO membrane water inlet Y1, and then enters the RO membrane filter core 4. The RO membrane filter core 4 performs reverse cleaning on the RO membrane filter core 4. The cleaned RO membrane waste water enters the fourth electromagnetic valve water flow channel D through the RO membrane backwashing water outlet Y3, and then enters the fourth and fifth electromagnetic valve water flow channel DE through the fourth electromagnetic valve water inlet D1, the fourth electromagnetic valve 400, and the fourth electromagnetic valve water outlet D2. Finally, the waste water is discharged through the waste water discharge port 1.2.

[0075] In this process, the first electromagnetic valve 100, the third electromagnetic valve 300, and the fifth electromagnetic valve 500 are in a closed state, and the second electromagnetic valve 200 and the fourth electromagnetic valve 400 are in an open state.

[0076] The specific water flow direction is as shown by the arrows. Figure 9

[0077] The flushing process of the pre-composite filter core is as follows:

[0078] The raw water enters the raw water flow channel 110, the first electromagnetic valve water flow channel A, the first electromagnetic valve water inlet A1, the first electromagnetic valve 100, the first electromagnetic valve water outlet A2, and then enters the first and second electromagnetic valve water flow channel AB. Subsequently, the raw water enters the booster water inlet F1, the booster pump 3, the booster water outlet F2, the booster water flow channel F, the RO membrane water inlet Y1, and then enters the RO membrane filter core 4. The RO membrane filter core 4 performs reverse cleaning on the RO membrane filter core 4. The cleaned RO membrane waste water enters the fourth electromagnetic valve water flow channel D through the RO membrane backwashing water outlet Y3, and then enters the fourth and fifth electromagnetic valve water flow channel DE through the fourth electromagnetic valve water inlet D1, the fourth electromagnetic valve 400, and the fourth electromagnetic valve water outlet D2. Finally, the waste water is discharged through the waste water discharge port 1.2.

[0079] In this process, the second electromagnetic valve 200 and the fourth electromagnetic valve 400 are in a closed state, and the first electromagnetic valve 100, the third electromagnetic valve 300, and the fifth electromagnetic valve 500 are in an open state.​

[0080] The specific water flow direction is shown by arrows. Figure 10

[0081] The above is the preferred scheme of the present application, which shows and describes the basic principle, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principle of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, which all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.​

Claims

1. A long-acting filter cartridge reverse osmosis water purifier comprising a water circuit board (1), characterized in that: The waterway plate (1) is provided with a front composite filter element (2), a booster pump (3), an RO membrane filter element (4), a rear active carbon filter element (5), a raw water inlet (1.1), a waste water outlet (1.2), a pure water outlet (1.3), a first electromagnetic valve (100), a second electromagnetic valve (200), a third electromagnetic valve (300), a fourth electromagnetic valve (400), and a fifth electromagnetic valve (500). The raw water inlet (1.1), the first electromagnetic valve (100), and the front composite filter element (2) are in communication with each other. The front composite filter element (2), the second electromagnetic valve (200), and the third electromagnetic valve (300) are in communication with each other. The first electromagnetic valve (100), the second electromagnetic valve (200), and the booster pump (3) are in communication with each other. The RO membrane filter element (4), the third electromagnetic valve (300), and the rear active carbon filter element (5) are in communication with each other. The fifth electromagnetic valve (500), the fourth electromagnetic valve (400), and the waste water outlet (1.2) are in communication with each other. The booster pump (3), the RO membrane filter element (4), and the rear active carbon filter element (5) are in communication with each other. The front composite filter element (2) is also in communication with the fifth electromagnetic valve (500). The RO membrane filter element (4) is also in communication with the fourth electromagnetic valve (400).

2. The long-lasting filter cartridge reverse osmosis water purifier according to claim 1, characterized in that: The waterway plate (1) is provided with a front filter element assembly groove (X), an RO membrane filter element assembly groove (Y), and a rear filter element assembly groove (Z), wherein the front composite filter element (2) is disassembled on the front filter element assembly groove (X), the RO membrane filter element (4) is disassembled on the RO membrane filter element assembly groove (Y), and the rear active carbon filter element (5) is disassembled on the rear filter element assembly groove (Z).

3. The long lasting filter cartridge reverse osmosis water purifier as claimed in claim 2 wherein: The front filter element assembly groove (X) is provided with a front raw water inlet (X1), a front filtered water outlet (X2), and a front backwashing water outlet (X3), the RO membrane filter element assembly groove (Y) is provided with an RO membrane water inlet (Y1), an RO membrane filtered water outlet (Y2), and an RO membrane backwashing water outlet (Y3), and the rear filter element assembly groove (Z) is provided with a rear water inlet (Z1) and a rear filtered water outlet (Z2). The front raw water inlet (X1) is in communication with the raw water inlet (1.1) and the first electromagnetic valve (100), the front filtered water outlet (X2) is in communication with the second electromagnetic valve (200) and the third electromagnetic valve (300), the front backwashing water outlet (X3) is in communication with the fifth electromagnetic valve (500), the RO membrane water inlet (Y1) is in communication with the water outlet end of the booster pump (3), the RO membrane filtered water outlet (Y2) is in communication with the third electromagnetic valve (300) and the rear water inlet (Z1), the RO membrane backwashing water outlet (Y3) is in communication with the fourth electromagnetic valve (400), and the rear filtered water outlet (Z2) is in communication with the pure water outlet (1.3).

4. The long lasting filter cartridge reverse osmosis water purifier according to claim 3, wherein: The waterway plate (1) is provided with a raw water flow channel (110), a first electromagnetic valve water flow channel (A), a fifth electromagnetic valve water flow channel (E), and a first-second electromagnetic valve water flow channel (AB). The raw water inlet (1.1) is arranged on the raw water flow channel (110), the raw water flow channel (110) is in communication with the first electromagnetic valve water flow channel (A) and the front raw water inlet (X1), the first electromagnetic valve water flow channel (A) is further provided with the first electromagnetic valve inlet (A1), the water inlet end of the first electromagnetic valve (100) is in communication with the first electromagnetic valve inlet (A1), the fifth electromagnetic valve water flow channel (E) is in communication with the front reverse washing water outlet (X3) and is provided with the fifth electromagnetic valve inlet (E1), the water inlet end of the fifth electromagnetic valve is in communication with the fifth electromagnetic valve inlet (E1), the first and second electromagnetic valve water flow channel (AB) is provided with the first electromagnetic valve outlet (A2) and the second electromagnetic valve outlet (B2), the water outlet end of the first electromagnetic valve is in communication with the first electromagnetic valve outlet (A2), and the water outlet end of the second electromagnetic valve is in communication with the second electromagnetic valve outlet (B2).

5. The long lasting filter cartridge reverse osmosis water purifier as claimed in claim 4 wherein: The waterway plate (1) is provided with the second and third electromagnetic valve water flow channel (BC) and the third electromagnetic valve water flow channel (C), the second and third electromagnetic valve water flow channel (BC) is in communication with the front filter water outlet (X2) and is provided with the second electromagnetic valve inlet (B1) and the third electromagnetic valve outlet (C2), the water inlet end of the second electromagnetic valve (200) is in communication with the second electromagnetic valve inlet (B1), the water outlet end of the third electromagnetic valve (300) is in communication with the third electromagnetic valve outlet (C2), the third electromagnetic valve water flow channel (C) is in communication with the rear inlet (Z1) and is provided with the third electromagnetic valve inlet (C1), the third electromagnetic valve inlet (C1) is in communication with the RO membrane filter water outlet (Y2) and the water inlet end of the third electromagnetic valve (300).

6. The long lasting filter cartridge reverse osmosis water purifier as claimed in claim 5 wherein: The waterway plate (1) is provided with the fourth and fifth electromagnetic valve water flow channel (DE) and the fourth electromagnetic valve water flow channel (D), the fourth and fifth electromagnetic valve water flow channel (DE) is provided with the fourth electromagnetic valve outlet (D2) and the fifth electromagnetic valve outlet (E2), the fourth electromagnetic valve water flow channel (D) is in communication with the RO membrane reverse washing water outlet (Y3) and is provided with the fourth electromagnetic valve inlet (D1), the water inlet end of the fourth electromagnetic valve (400) is in communication with the fourth electromagnetic valve inlet (D1), the water outlet end of the fourth electromagnetic valve (400) is in communication with the fourth electromagnetic valve outlet (D2), the water outlet end of the fifth electromagnetic valve (500) is in communication with the fifth electromagnetic valve outlet (E2), and the waste water outlet (1.2) is arranged on the fourth and fifth electromagnetic valve water flow channel (DE).

7. The long lasting filter cartridge reverse osmosis water purifier as claimed in claim 6 wherein: The waterway plate (1) is provided with the pure water flow channel (120), and the pure water outlet (1.3) is arranged on the pure water flow channel (120), wherein the pure water flow channel (120) is in communication with the rear filter water outlet (Z2).

8. The long lasting filter cartridge reverse osmosis water purifier as claimed in claim 7 wherein: The first and second electromagnetic valve water flow channel (AB) is provided with the booster water inlet (F1), the waterway plate (1) is provided with the booster water outlet flow channel (F), the booster water outlet flow channel (F) is in communication with the RO membrane water inlet (Y1) and is provided with the booster water outlet (F2), the booster water inlet (F1) and the booster water outlet (F2) are respectively connected with the communication pipe (6) and are in communication with the water inlet end and the water outlet end of the booster pump (3) through the communication pipe (6).

9. The long lasting filter cartridge reverse osmosis water purifier as claimed in claim 8 wherein: The raw water flow channel (110) is in perpendicular communication with the first electromagnetic valve water flow channel (A), the first and second electromagnetic valve water flow channels (AB) are in parallel and are arranged on the same side, the second and third electromagnetic valve water flow channels (BC) are in perpendicular, the second and third electromagnetic valve water flow channels (BC) are arranged on the same axis with the third electromagnetic valve water flow channel (C), the fifth electromagnetic valve water flow channel (E) is arranged on the same axis with the fourth electromagnetic valve water flow channel (D), the fifth electromagnetic valve water flow channel (E) is in parallel with the second and third electromagnetic valve water flow channels (BC) and is arranged on the same side, the fourth electromagnetic valve water flow channel (D) is in parallel with the third electromagnetic valve water flow channel (C) and is arranged on the same side, the fourth and fifth electromagnetic valve water flow channels (DE) are in parallel with the fourth electromagnetic valve water flow channel (D) and / or the fifth electromagnetic valve water flow channel (E) and are arranged on the same side, the pressurized water outlet flow channel (F) is in perpendicular with the fourth and fifth electromagnetic valve water flow channels (DE), and the pure water flow channel (120) is in perpendicular with the third electromagnetic valve water flow channel (C).

Images