Waterway board with variable backflow waterway and water purifier using waterway board

Abstract

The utility model discloses a variable backflow waterway waterway board which comprises a waterway board main body, a PCT filter element connecting seat and an RO filter element connecting seat are arranged at the bottom of the waterway board main body, and a raw water inlet runner, a purified water outlet runner, a waste water outlet runner, a pure water outlet runner, a pump water inlet runner and a pump water outlet runner are arranged on the waterway board main body. A backwash water outlet and a backwash water inlet are also formed in the waterway board main body; the water purifier comprises the waterway board of the variable backflow waterway, a PCT filter element, an RO filter element, a booster pump and a water storage tank, wherein the PCT filter element, the RO filter element, the booster pump and the water storage tank are detachably connected to the waterway board. The waterway board with the variable backflow waterway and the water purifier applying the waterway board have the advantages of high use flexibility and high universality, can effectively reduce the mold input cost, meet the use requirements of different customers, and are wide in application range.

Description

Technical Field

[0001] This utility model relates to the field of water purifier technology, specifically to a water circuit board with a variable return water path and a water purifier using the water circuit board. Background Technology

[0002] The water circuit board, through different interfaces and connection methods, achieves different return water paths to obtain different flushing effects. The water circuit board contains filter cartridge holders, which connect to the filter cartridges. Inside the water purifier, the water circuit board and filter cartridges are connected by various valves, interfaces, and PE pipes, thereby achieving closed control of the water flow channel and connecting the entire water circuit. Currently, all reverse osmosis water purifiers on the market need to solve the problem of zero stagnant water (i.e., after the entire machine has been shut down for a certain period of time, the TDS of the initially connected water will be higher because the high TDS before the membrane permeates to the post-membrane stage, resulting in a high TDS in the effluent). The main solution is to reduce the TDS before the membrane. This is achieved by returning pure water to the pre-membrane stage, which can be done through backflow, forward flushing, or reverse flushing. The water circuit board structure can realize backflow, forward flushing, and reverse flushing, meaning that different filter cartridge structures can be specifically selected to solve the problem of zero stagnant water according to different customer needs.

[0003] In the existing technology, the return valve and the water circuit of the water circuit board are directly connected (i.e., directly inserted and fixed on the water circuit board), instead of being connected through an interface and PE pipe. This results in the return water circuit being fixed and cannot be modified. When it is necessary to change the return and flushing water circuit for different filter element structures, the return valve and the structure of the water circuit board are already fixed and cannot be changed. The only solution is to re-mold, which leads to high change costs, no technical upgrades, and poor versatility. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide a water circuit board with a variable return water circuit that is highly flexible, versatile, can effectively reduce mold investment costs, meets the needs of different customers, and has a wide range of applications, as well as a water purifier that uses the water circuit board.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A variable reflux water circuit board includes a water circuit board body. The bottom of the water circuit board body is provided with a PCT filter element connector and an RO filter element connector. The PCT filter element connector is provided with a first PCT filter element inlet, a first PCT filter element outlet, a second PCT filter element inlet, and a second PCT filter element outlet. The RO filter element connector is provided with an RO filter element inlet, an RO filter element wastewater outlet, and an RO filter element pure water outlet.

[0007] The main body of the water circuit board is provided with a raw water inlet channel, a purified water outlet channel, a wastewater outlet channel, a pure water outlet channel, a pump inlet channel, and a pump outlet channel. The main body of the water circuit board is also provided with a backflush outlet and a backflush inlet.

[0008] The raw water inlet channel is connected to the inlet of the first PCT filter element, the outlet of the first PCT filter element is connected to the purified water outlet channel, and the outlet of the first PCT filter element is connected to the inlet of the RO filter element through a pipeline. The wastewater outlet of the RO filter element is connected to the wastewater outlet channel, the pure water outlet of the RO filter element is connected to the inlet of the second PCT filter element through a pipeline, and the outlet of the second PCT filter element is connected to the pure water outlet channel.

[0009] As a further improvement to the above technical solution:

[0010] The water circuit board is also equipped with a first check valve, a second check valve, an inlet valve, a return valve, and a wastewater valve.

[0011] The main body of the water circuit board is also equipped with a purified water TDS interface, a pure water TDS interface, a high-voltage switch interface, a wastewater outlet interface, and a wastewater inlet interface.

[0012] A water purifier includes a water circuit board, on which a PCT filter element, an RO filter element, a booster pump, and a water storage tank are detachably connected. The water circuit board is a variable backflow water circuit board as described above. The PCT filter element is connected to the inlet, outlet, inlet, and outlet of the first PCT filter element; the RO filter element is connected to the inlet, wastewater outlet, and pure water outlet of the RO filter element; the input end of the booster pump is connected to the pump inlet channel, and the output end is connected to the pump outlet channel; the water storage tank is connected to the backflow outlet.

[0013] As a further improvement to the above technical solution:

[0014] A purified water TDS detector is installed on the purified water TDS interface, a pure water TDS detector is installed on the pure water TDS interface, and a high-voltage switch is installed on the high-voltage switch interface.

[0015] Compared with the prior art, the advantages of this utility model are:

[0016] I. The variable reflux water circuit board of this utility model includes a water circuit board body and a PCT filter element connector and an RO filter element connector disposed on the water circuit board body. Both the PCT and RO filter element connectors are provided with multiple sets of filter element interfaces. The water circuit board body also has a backflushing outlet and a backflushing inlet. The input end of the reflux valve is connected to the backflushing outlet via a PE pipe. The output end of the reflux valve can achieve different reflux methods by changing the connection position of the PE pipe according to the selected backflushing, forward flushing, or reverse flushing water circuit, reducing stagnant water. This replaces the existing structure where the reflux valve is directly inserted into the water circuit board, offering advantages of high flexibility and versatility. It effectively reduces mold investment costs, accommodates technological upgrades, meets the needs of different customers, and has a wide range of applications.

[0017] II. The water purifier of this utility model includes the water circuit board of the variable return water circuit mentioned above, as well as the PCT filter element, RO filter element, booster pump and water storage tank connected to the water circuit board of the variable return water circuit. By changing the interface position, the water circuit switching control can be achieved, realizing the connection and disconnection of different return water circuits. It has multiple ways to effectively solve the problem of zero stagnant water in the water purifier, and has the advantages of simple and convenient operation and high flexibility of use. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a water circuit board with a variable return water path.

[0019] Figure 2 This is a schematic diagram of the water circuit board from another angle, showing the variable return water circuit.

[0020] Figure 3 This is a schematic diagram of the water circuit board with a variable return water path, viewed from above.

[0021] Figure 4 This is a schematic diagram of the backflow water path of a water purifier.

[0022] Figure 5 This is a schematic diagram of the forward flushing water path of a water purifier.

[0023] Figure 6 This is a schematic diagram of the backwash water circuit of a water purifier.

[0024] Legend:

[0025] 100. PCT filter element; 200. RO filter element; 300. Booster pump; 400. Water storage tank; 1. Water circuit board body; 101. Raw water inlet channel; 102. Purified water outlet channel; 103. Wastewater outlet channel; 104. Pure water outlet channel; 105. Pump inlet channel; 106. Pump outlet channel; 107. Backflush outlet; 108. Backflush inlet; 109. Purified water TDS interface; 110. Pure water TDS interface; 111. High-pressure switch interface; 112. Wastewater outlet interface; 113. Wastewater inlet interface. 2. PCT filter element connector; 201. First PCT filter element inlet; 202. First PCT filter element outlet; 203. Second PCT filter element inlet; 204. Second PCT filter element outlet; 3. RO filter element connector; 301. RO filter element inlet; 302. RO filter element wastewater outlet; 303. RO filter element pure water outlet; 4. First check valve; 5. Second check valve; 6. Inlet valve; 7. Return valve; 8. Wastewater valve; 9. Purified water TDS detector; 10. Pure water TDS detector; 11. High-pressure switch. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] like Figures 1 to 3 As shown, the variable reflux water circuit board of this embodiment includes a water circuit board body 1. The bottom of the water circuit board body 1 is provided with a PCT filter element connector 2 and an RO filter element connector 3. The PCT filter element connector 2 is provided with a first PCT filter element inlet 201, a first PCT filter element outlet 202, a second PCT filter element inlet 203, and a second PCT filter element outlet 204. The RO filter element connector 3 is provided with an RO filter element inlet 301, an RO filter element wastewater outlet 302, and an RO filter element pure water outlet 303. The water circuit board body 1 is provided with a raw water inlet channel 101, a purified water outlet channel 102, a wastewater outlet channel 103, and a pure water outlet channel 104. 04. Pump inlet channel 105 and pump outlet channel 106, the main body of the water circuit board 1 is also provided with a backflush outlet 107 and a backflush inlet 108; the raw water inlet channel 101 is connected to the first PCT filter element inlet 201, the first PCT filter element outlet 202 is connected to the purified water outlet channel 102, and the first PCT filter element outlet 202 is connected to the RO filter element inlet 301 through a pipeline, the RO filter element wastewater outlet 302 is connected to the wastewater outlet channel 103, the RO filter element pure water outlet 303 is connected to the second PCT filter element inlet 203 through a pipeline, and the second PCT filter element outlet 204 is connected to the pure water outlet channel 104.

[0028] Preferably, the water circuit board body 1 is also equipped with a first one-way valve 4, a second one-way valve 5, an inlet valve 6, a return valve 7, and a wastewater valve 8. In this embodiment, the first one-way valve 4, the second one-way valve 5, the inlet valve 6, the return valve 7, and the wastewater valve 8 are accessories that are independently assembled on the water circuit board body 1, forming an integral whole with the water circuit board body 1.

[0029] The variable return water circuit board includes a water circuit board body 1 and a PCT filter element connector 2 and an RO filter element connector 3 disposed on the water circuit board body 1. Both the PCT filter element connector 2 and the RO filter element connector 3 are equipped with multiple sets of filter element interfaces. The water circuit board body 1 also has a backflushing outlet 107 and a backflushing inlet 108. The input end of the return valve 7 is connected to the backflushing outlet 107 via a PE pipe. The output end of the return valve 7 can achieve different water circuit return methods by changing the connection position of the PE pipe according to the selected backflushing, forward flushing, or reverse flushing water circuit, reducing zero stagnant water. This replaces the existing structure where the return valve 7 is directly inserted into the water circuit board, offering advantages of high flexibility and versatility. It effectively reduces mold investment costs, accommodates technological upgrades, meets the needs of different customers, and has a wide range of applications.

[0030] Preferably, the water circuit board body 1 is also provided with a purified water TDS interface 109, a pure water TDS interface 110, a high-voltage switch interface 111, a wastewater outlet interface 112 and a wastewater inlet interface 113, which facilitates the installation of accessories with corresponding functions on the water circuit board body 1. It has the advantages of high integration and good compatibility, and further expands the application scope of the water circuit board body 1.

[0031] It should be noted that in this embodiment, the water after the first PCT filtration is called purified water, and the water after RO filtration is called pure water; different accessories or interfaces are connected by PE pipes.

[0032] like Figures 4 to 6 As shown, the water purifier of this embodiment includes a water circuit board, on which PCT filter element 100, RO filter element 200, booster pump 300 and water storage tank 400 are detachably connected. The water circuit board is the aforementioned variable return water circuit board. PCT filter element 100 is connected to the first PCT filter element inlet 201, the first PCT filter element outlet 202, the second PCT filter element inlet 203 and the second PCT filter element outlet 204. RO filter element 200 is connected to the RO filter element inlet 301, the RO filter element wastewater outlet 302 and the RO filter element pure water outlet 303. The input end of booster pump 300 is connected to the pump inlet channel 105 and the output end of booster pump 300 is connected to the pump outlet channel 106. Water storage tank 400 is connected to the backflow outlet 107.

[0033] It should be noted that in this embodiment, the specific structure and working principle of the PCT filter element 100 and the RO filter element 200 are existing technologies in the field and will not be described in detail here.

[0034] Preferably, a purified water TDS detector 9 is installed on the purified water TDS interface 109, a pure water TDS detector 10 is installed on the pure water TDS interface 110, and a high-pressure switch 11 is installed on the high-pressure switch interface 111.

[0035] Specifically, under normal use, the tap water pipe is connected to the input end of the raw water inlet channel 101. The raw water inlet channel 101, the first PCT filter inlet 201, the PCT filter 100 and the first PCT filter outlet 202 are connected in sequence to form the first PCT filtration water circuit.

[0036] The output end of the first PCT filter cartridge outlet 202 is divided into two branches. One branch is connected to the purified water outlet channel 102 to form a purified water path. The other branch is connected in sequence to the purified water TDS detector 9, the inlet valve 6, the pump inlet channel 105, the booster pump 300, the pump outlet channel 106, and the RO filter cartridge inlet 301 to form a booster water path.

[0037] The RO filter element wastewater outlet 302, wastewater outlet port 112, wastewater inlet port 113, wastewater valve 8 and wastewater outlet channel 103 are connected in sequence to form a wastewater circuit;

[0038] The output end of the RO filter element pure water outlet 303 is divided into two branches. One branch is connected to the water storage tank 400, and the other branch is connected in sequence to the high pressure switch 11, the first one-way valve 4, the pure water TDS detector 10, the second PCT filter element inlet 203, the PCT filter element 100 and the second PCT filter element outlet 204, forming the second PCT filtration water path.

[0039] The output end of the second PCT filter cartridge outlet 204 is connected to the pure water outlet channel 104, forming a pure water path.

[0040] It should be noted that the variable return water circuit board of this utility model has a backflush water circuit working mode, a forward flush water circuit working mode, and a reverse flush water circuit working mode. By changing the connection position of the PE pipe, the switching of different return water circuits can be achieved.

[0041] Specifically, when choosing to solve the problem of zero stagnant water through a backflushing water path, such as Figure 4As shown, the pure water outlet channel 104 is closed, while the RO filter element 200 continues to produce water. Pure water is output from the pure water outlet 303 (after the membrane) of the RO filter element, and passes sequentially through the backwash outlet 107, the backflow valve 7, the second one-way valve 5, the backwash inlet 108, and the pump inlet channel 105. The pure water mixes with the purified water in the pump inlet channel 105 and enters the booster pump 300. Then, it passes through the pump outlet channel 106 and the RO filter element inlet 301 and flows back to the RO filter element 200 (before the membrane). This discharges the water with high TDS values ​​before the membrane through the wastewater path, thereby reducing the TDS value of the water before the membrane and achieving the effect of solving the problem of zero stagnant water.

[0042] Specifically, when choosing to solve the problem of zero stagnant water through a forward flushing system, such as... Figure 5 As shown, after the entire machine is shut down, because the water storage tank 400 stored a certain amount of pure water before shutdown (the water storage tank 400 is connected to the backflow outlet 107), the pure water flows back to the RO filter element 200 (before the membrane) through the backflow valve 7, the second one-way valve 5, the pump outlet channel 106 and the RO filter element inlet 301 in sequence. This allows the water with high TDS value before the membrane to be discharged through the wastewater path, thereby reducing the TDS value of the water before the membrane and achieving the effect of solving the problem of zero stagnant water.

[0043] Specifically, when choosing to solve the zero-stagnant-water problem through a backflushing water system, such as Figure 6 As shown, after the entire machine is shut down, the water storage tank 400 has stored a certain amount of pure water before shutdown (the water storage tank 400 is connected to the backwash outlet 107). At the same time, due to the pressure maintenance during shutdown, the water storage tank 400 has at least two kilograms of water pressure and a certain amount of pure water. The pure water is backwashed from behind the membrane to in front of the membrane by the water pressure of the water storage tank 400 until the water storage and water pressure are balanced with the water pressure in front of the membrane. This process will stop, thereby discharging the water with high TDS value in front of the membrane through the wastewater path, thereby reducing the TDS value of the water in front of the membrane and achieving the effect of solving the problem of zero stagnant water.

[0044] In summary, this water purifier includes the aforementioned variable return water circuit board, and PCT filter element 100, RO filter element 200, booster pump 300, and water storage tank 400 connected to the variable return water circuit board. By changing the interface position, the water circuit switching control can be achieved, realizing the connection and disconnection of different backflow water circuits. It effectively solves the problem of zero stagnant water in water purifiers in multiple ways, and has the advantages of simple and convenient operation and high flexibility of use.

[0045] The above description is merely a preferred embodiment of this utility model, and the protection scope of this utility model is not limited to the above embodiments. For those skilled in the art, improvements and modifications obtained without departing from the technical concept of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A variable return water circuit board, comprising a water circuit board body (1), characterized in that, The bottom of the water circuit board body (1) is provided with a PCT filter element connector (2) and an RO filter element connector (3). The PCT filter element connector (2) is provided with a first PCT filter element inlet (201), a first PCT filter element outlet (202), a second PCT filter element inlet (203) and a second PCT filter element outlet (204). The RO filter element connector (3) is provided with an RO filter element inlet (301), an RO filter element wastewater outlet (302) and an RO filter element pure water outlet (303). The main body (1) of the water circuit board is provided with a raw water inlet channel (101), a purified water outlet channel (102), a wastewater outlet channel (103), a pure water outlet channel (104), a pump inlet channel (105), and a pump outlet channel (106). The main body (1) of the water circuit board is also provided with a backflush outlet (107) and a backflush inlet (108). The raw water inlet channel (101) is connected to the inlet (201) of the first PCT filter element, the outlet (202) of the first PCT filter element is connected to the purified water outlet channel (102), and the outlet (202) of the first PCT filter element is connected to the inlet (301) of the RO filter element through a pipeline. The outlet (302) of the RO filter element is connected to the wastewater outlet channel (103), the outlet (303) of the RO filter element is connected to the inlet (203) of the second PCT filter element through a pipeline, and the outlet (204) of the second PCT filter element is connected to the pure water outlet channel (104).

2. The water circuit board with variable return water path according to claim 1, characterized in that, The water circuit board body (1) is also equipped with a first check valve (4), a second check valve (5), an inlet valve (6), a return valve (7), and a wastewater valve (8).

3. The water circuit board with variable return water path according to claim 2, characterized in that, The water circuit board body (1) is also provided with a purified water TDS interface (109), a pure water TDS interface (110), a high-voltage switch interface (111), a wastewater outlet interface (112), and a wastewater inlet interface (113).

4. A water purifier, comprising a water circuit board, and a PCT filter element (100), an RO filter element (200), a booster pump (300), and a water storage tank (400) detachably connected to the water circuit board, characterized in that, The water circuit board is the variable return water circuit board as described in claim 3. The PCT filter element (100) is connected to the first PCT filter element inlet (201), the first PCT filter element outlet (202), the second PCT filter element inlet (203), and the second PCT filter element outlet (204). The RO filter element (200) is connected to the RO filter element inlet (301), the RO filter element wastewater outlet (302), and the RO filter element pure water outlet (303). The input end of the booster pump (300) is connected to the pump inlet channel (105), and the output end of the booster pump (300) is connected to the pump outlet channel (106). The water storage tank (400) is connected to the backflushing outlet (107).

5. The water purifier according to claim 4, characterized in that, A purified water TDS detector (9) is installed on the purified water TDS interface (109), a pure water TDS detector (10) is installed on the pure water TDS interface (110), and a high-voltage switch (11) is installed on the high-voltage switch interface (111).

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