Waterway plate structure with pure water backflow and water purifier

Abstract

The utility model discloses a waterway board structure with pure water backflow and a water purifier, and is characterized in that the waterway board structure comprises a waterway board main body which is respectively connected with a PCB (Printed Circuit Board) composite filter element and a reverse osmosis filter element waterway, and the waterway board main body is integrated with a pure water channel I, a backflow water channel and a living water channel on the waterway board main body; a sealing connector, a compression spring and a pressure relief plug are arranged in the backflow water channel, when the water pressure in the first pure water channel reaches a certain value, pure water enters the backflow water channel, the backflow water channel is communicated with the living water channel, and the pure water passes through the living water channel, then passes through the booster pump and then enters the reverse osmosis filter element. The reverse osmosis water purifier is simple in structure and high in integration level, the production cost can be reduced, and the service life of the reverse osmosis filter element is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of water purification equipment, and more specifically to a waterway plate structure with pure water reflux and a water purifier. Background Art

[0002] As water purifiers become more and more popular in households, consumers' requirements for water purifiers have also increased. The purification of water purifiers mainly relies on the filtering effect of reverse osmosis membranes. Impurities such as inorganic salts are easy to accumulate in reverse osmosis filter elements. After the water purifier is stopped, inorganic salts and other impurities filtered by the reverse osmosis filter element are easy to accumulate, and the hardness inside the filter element is high and easy to crystallize, causing the reverse osmosis filter element to be easily blocked and its service life to be shortened. To this end, existing technical personnel have made improvements to it. For example, the Chinese patent publication number is CN113562867A, which discloses a large-flux reverse osmosis water purification mechanism for improving the water quality of the first cup of water, including a pre-filter, an inlet valve, a booster pump, a small membrane, a switching valve, a flow limiting valve 2, a concentrated water valve, a large membrane, a one-way valve 1 and a post-filter; the pre-filter is connected to the booster pump through the inlet valve, the booster pump is connected to the small membrane, and the pre-filter is connected to the tap water inlet pipeline; the small membrane is connected to the large membrane and the flow limiting valve 2 respectively through the switching valve, the flow limiting valve 2 is connected to the concentrated water valve through the pipeline, and the concentrated water valve is connected to the large membrane through the pipeline. This patent structure improves the water quality of the first cup of water of the large-flux reverse osmosis water purifier, and the high-speed water flow of the pure water washing membrane and the concentrated water side of the small membrane is conducive to the extension of the membrane life; but the disadvantage is that the entire reverse osmosis water purification mechanism has a complex structure and is inconvenient to produce and maintain. For this reason, it is necessary to further improve the existing technology. Summary of the invention

[0003] The purpose of the utility model is to solve the deficiencies of the prior art and to provide a waterway plate structure with pure water reflux which is stable, reliable, easy to produce and maintain.

[0004] Another object of the utility model is to provide a water purifier.

[0005] The utility model adopts the following technical solutions to achieve the above-mentioned purpose: a waterway plate structure with pure water reflux, characterized in that it includes a waterway plate body connected to the PCB composite filter element and the reverse osmosis filter element waterway respectively, the waterway plate body integrates a pure water waterway 1, a reflux waterway and a domestic water waterway on the waterway plate body, a sealing joint, a compression spring and a pressure relief plug are provided in the reflux waterway, when the water pressure in the pure water waterway 1 reaches a certain value, pure water will enter the reflux waterway, the reflux waterway is connected with the domestic waterway, and the pure water passes through the domestic waterway and then through the booster pump and then enters the reverse osmosis filter element.

[0006] As a further illustration of the above scheme, the water circuit board body is externally connected to a clean water output pipeline and a pure water output pipeline, the clean water output pipeline and the pure water output pipeline are connected to a double switch faucet, and a check valve is provided in the pure water output pipeline to prevent backflow.

[0007] Furthermore, the pressure relief plug is provided with a shaft rod, the compression spring is sleeved on the shaft rod, the sealing joint is provided with an axial hole, a fastener is inserted in the axial hole, and the pressure relief plug is encapsulated in the return water channel through the fastener and the sealing joint.

[0008] Furthermore, the output end of the PCB composite filter element is connected to a water inlet solenoid valve, and the output end of the water inlet solenoid valve is connected to clean water branch 1 and clean water branch 2. Clean water branch 1 is connected to the reverse osmosis filter element through a booster pump, and clean water branch 2 is connected to a double-switch faucet.

[0009] Furthermore, a clean water pipeline is connected between the output end of the PCB composite filter element and the waterway board body, and the waterway board body is provided with a clean water interface 1 corresponding to the clean water pipeline.

[0010] Furthermore, a composite filter element water cavity and an RO filter element water cavity are provided on the waterway plate body; the composite filter element water cavity is provided with a composite filter element water inlet 1, a composite filter element water outlet 2, a composite filter element water inlet 2, and a composite filter element water outlet 1; the RO filter element water cavity is provided with a RO filter element water inlet, a RO filter element pure water outlet, and a RO filter element concentrated water outlet.

[0011] Furthermore, the waterway plate body is provided with a water inlet pipe respectively connected to the second water inlet of the composite filter element and the water inlet of the RO filter element, and the water inlet of the RO filter element is provided with a one-way valve.

[0012] A water purifier, characterized in that it comprises a water purifier body and a PCB composite filter element, a reverse osmosis filter element and a waterway plate body arranged therein, wherein the waterway plate body is respectively connected to the PCB composite filter element and the reverse osmosis filter element waterway.

[0013] The beneficial effects that can be achieved by the utility model by adopting the above technical solution are:

[0014] The utility model adopts an integrated waterway plate structure which is mainly composed of a waterway plate main body which is respectively connected to the PCB composite filter element and the reverse osmosis filter element waterway, a pure water waterway integrated on the waterway plate main body, a reflux waterway and a domestic water waterway, so that the pure water of the water purifier is refluxed into the reverse osmosis filter element, the water concentration in the filter element is reduced, the generation of crystals is reduced, the reverse osmosis membrane is not easily clogged, and the service life of the reverse osmosis membrane is extended, and the user's core replacement cost is reduced; the waterway plate main body with integrated pure water reflux system realizes the pure water reflux function, is highly integrated, and improves the product competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1This is a schematic diagram of the system principle of pure water reflux of the utility model.

[0016] Figure 2 It is a schematic diagram of the structure of the waterway plate of the utility model.

[0017] Figure 3 It is a schematic diagram of the cross-sectional structure of the waterway plate of the utility model.

[0018] Figure 4 It is a schematic diagram of the structure of the waterway plate of the utility model.

[0019] Description of the accompanying drawings: 1, PCB composite filter element 2, reverse osmosis filter element 3, waterway board body 4, pure water channel 1 5, reflux water channel 6, domestic water channel 1 7, domestic water channel 2 8, domestic water channel 3 9, sealing joint 10, compression spring 11, pressure relief plug 12, booster pump 13, clean water output pipeline 14, pure water output pipeline 14-1, check valve 15, double switch faucet 16, water inlet solenoid valve 17, clean water interface 1 18, composite filter element water chamber 18-1, composite filter element water inlet 1 18-2, composite filter element water outlet 2 18-3, composite filter element water inlet 2 18-4 , composite filter element water outlet one 19, RO filter element water chamber 19-1, RO filter element water inlet 19-2, RO filter element pure water outlet 19-3, RO filter element concentrated water outlet 20, hot water interface 21, concentrated water interface 22, pipeline machine interface 23, pure water interface 24, tap water interface 25, purified water interface two 26, interface one 27, interface two 28, interface three 29, interface four 30, interface five 31, interface six DETAILED DESCRIPTION

[0020] In the description of the present invention, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and cannot be understood as limiting the specific protection scope of the present invention.

[0021] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the definition of "first" and "second" features can explicitly or implicitly include one or more of the features. In the description of the utility model, "at least" means one or more, unless otherwise clearly and specifically defined.

[0022] In the present invention, unless otherwise specified and limited, the terms "assembly", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can also be a mechanical connection; it can be directly connected, or it can be connected through an intermediate medium, or the two elements can be internally connected. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] In the utility model, unless otherwise specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "below" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than the height of the second feature. A first feature being "above", "below" and "below" a second feature includes that the first feature is directly below or obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than the second feature.

[0024] The following is a further description of the specific implementation of the utility model in conjunction with the drawings of the specification, so that the technical solution and its beneficial effects of the utility model are clearer and more explicit. The following description of the embodiments with reference to the drawings is exemplary and intended to explain the utility model, and cannot be understood as limiting the utility model.

[0025] like Figure 1-Figure 4As shown, the utility model is a waterway plate structure with pure water reflux and a water purifier. The waterway plate structure with pure water reflux is used in conjunction with a PCB composite filter element 1 and a reverse osmosis filter element 2. The purpose is to reduce the TDS value in the reverse osmosis filter element through a pure water reflux system, reduce the crystallization of inorganic salts, make the reverse osmosis membrane less likely to be blocked, extend the service life of the reverse osmosis filter element, and reduce the user's core replacement cost. Structurally, it includes a waterway plate body 3 respectively connected to the PCB composite filter element 1 and the reverse osmosis filter element 2, a pure water channel 1 4, a return water channel 5 and a domestic water channel 1 6, a domestic water channel 2 7, and a domestic water channel 3 8 integrated on the waterway plate body 3, a sealing joint 9, a compression spring 10 and a pressure relief plug 11 are provided in the return water channel 5, the pure water channel 1 4 is respectively connected with the domestic water channel 1 6 and the return water channel 5, when the water pressure in the pure water channel 1 4 reaches a value that can push open the pressure relief plug 11, the pure water will enter the return water channel, the return water channel 5 is connected with the domestic water channel 3 8, the pure water passes through the domestic water channel 3 8, and then enters the reverse osmosis filter element 2 through the booster pump 12. The waterway plate body 3 is externally connected with a clean water output pipeline 13 and a pure water output pipeline 14, which are connected to a double-switch faucet 15, and a check valve 14-1 is provided in the pure water output pipeline to prevent backflow. In this embodiment, the pressure relief plug 11 is provided with a shaft, the compression spring 10 is sleeved on the shaft, the sealing joint 9 is provided with a shaft hole, and a fastener is inserted in the shaft hole, and the pressure relief plug is encapsulated in the return water channel through the fastener and the sealing joint.

[0026] Furthermore, the output end of the PCB composite filter element is connected to a water inlet solenoid valve 16, and the output end of the water inlet solenoid valve 16 is connected to a water purification branch 1 and a water purification branch 2, the water purification branch 1 is connected to the reverse osmosis filter element through a booster pump 12, and the water purification branch 2 is connected to a double-switch faucet. A water purification pipeline is connected between the output end of the PCB composite filter element and the waterway board body, and the waterway board body is provided with a water purification interface 17 corresponding to the water purification pipeline.

[0027] The main body of the waterway plate is provided with a composite filter element water cavity 18 and an RO filter element water cavity 19. The composite filter element water cavity is provided with a composite filter element water inlet 18-1, a composite filter element water outlet 2 18-2, a composite filter element water inlet 2 18-3, and a composite filter element water outlet 1 18-4. The RO filter element water cavity is provided with an RO filter element water inlet 19-1, an RO filter element pure water outlet 19-2, and an RO filter element concentrated water outlet 19-3. The main body of the waterway plate is provided with a water inlet pipe connected to the composite filter element water inlet 2 and the RO filter element water inlet, and a one-way valve is provided at the RO filter element water inlet. In addition, the water circuit board body is also provided with a hot water interface 20, a concentrated water interface 21, a pipeline machine interface 22, a pure water interface 23, a tap water interface 24, a purified water interface 25, an interface 1 26, an interface 27, an interface 3 28, an interface 4 29, an interface 5 30, and an interface 6 31. It is worth noting that the distribution form of the various interfaces of the water circuit board body can be designed according to actual needs and is not limited to the structural form shown in the figure.

[0028] Compared with the prior art, the utility model adopts an integrated waterway plate structure with pure water reflux to return the pure water of the water purifier to the reverse osmosis filter element, thereby reducing the water concentration in the filter element, reducing the generation of crystals, making the reverse osmosis membrane less likely to be blocked, thereby extending the service life of the reverse osmosis membrane and reducing the user's core replacement cost; the waterway plate body of the integrated pure water reflux system realizes the pure water reflux function, is highly integrated, and improves product competitiveness.

[0029] The above is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several modifications and improvements without departing from the inventive concept of the present invention, and these modifications and improvements all fall within the protection scope of the present invention.

Claims

1. A waterway plate structure with pure water reflux, characterized in that: It includes a waterway plate body which is respectively connected to the PCB composite filter element and the reverse osmosis filter element waterway. The waterway plate body integrates a pure water channel 1, a return water channel and a domestic water channel on the waterway plate body. A sealing joint, a compression spring and a pressure relief plug are arranged in the return water channel. When the water pressure in the pure water channel 1 reaches a value that can push open the pressure relief plug, pure water will enter the return water channel. The return water channel is connected to the domestic water channel, and the pure water enters the reverse osmosis filter element through the domestic water channel.

2. A waterway plate structure with pure water reflux according to claim 1, characterized in that: The waterway plate body is externally connected with a clean water output pipeline and a pure water output pipeline, the clean water output pipeline and the pure water output pipeline are connected to a double-switch faucet, and a check valve is arranged in the pure water output pipeline.

3. A waterway plate structure with pure water reflux according to claim 1, characterized in that: The pressure relief plug is provided with a shaft rod, a compression spring sleeve is arranged on the shaft rod, a sealing joint is provided with a shaft hole, a fastener is inserted in the shaft hole, and the pressure relief plug is encapsulated in the return water channel through the fastener and the sealing joint.

4. A waterway plate structure with pure water reflux according to claim 1, characterized in that: The output end of the PCB composite filter element is connected to a water inlet solenoid valve, and the output end of the water inlet solenoid valve is connected to a clean water branch 1 and a clean water branch 2. The clean water branch 1 is connected to the reverse osmosis filter element through a booster pump, and the clean water branch 2 is connected to a double-switch faucet.

5. A waterway plate structure with pure water reflux according to claim 1, characterized in that: A clean water pipeline is connected between the output end of the PCB composite filter element and the waterway board body, and the waterway board body is provided with a clean water interface 1 corresponding to the clean water pipeline.

6. A waterway plate structure with pure water reflux according to claim 1, characterized in that: A composite filter element water cavity and an RO filter element water cavity are arranged on the main body of the waterway plate. The composite filter element water cavity is provided with a composite filter element water inlet 1, a composite filter element water outlet 2, a composite filter element water inlet 2, and a composite filter element water outlet 1. The RO filter element water cavity is provided with a RO filter element water inlet, a RO filter element pure water outlet, and a RO filter element concentrated water outlet.

7. A waterway plate structure with pure water reflux according to claim 6, characterized in that: The waterway plate body is provided with a water inlet pipe which is respectively connected with the second water inlet of the composite filter element and the water inlet of the RO filter element, and the water inlet of the RO filter element is provided with a one-way valve.

8. A water purifier, characterized in that: It comprises a water purifier body and a PCB composite filter element, a reverse osmosis filter element and a waterway plate body as described in any one of claims 1 to 7, wherein the waterway plate body is respectively connected to the PCB composite filter element and the reverse osmosis filter element waterway.

Images