Desk type water purifier waterway structure with pure water backflow waterway structure

Abstract

The utility model relates to a table type water purifier waterway structure with a pure water backflow waterway structure. The waterway structure comprises a raw water tank, a reversing electromagnetic valve, a self-priming pump, a filtering assembly, a flushing electromagnetic valve, a pure water tank, a water suction pump and a water outlet assembly, a water outlet of the raw water tank is communicated with a water inlet of the reversing electromagnetic valve; a water inlet of the self-priming pump is communicated with a water outlet of the reversing solenoid valve, a water outlet of the self-priming pump is communicated with a water inlet of the filtering assembly, a water return port of the filtering assembly is communicated with a water inlet of the flushing solenoid valve, and a water outlet of the flushing solenoid valve is communicated with a water inlet of the raw water tank; a water inlet of the pure water tank is communicated with a water outlet of the filtering assembly, one water outlet of the pure water tank is communicated with the other water inlet of the reversing electromagnetic valve, and the other water outlet of the pure water tank is communicated with a water inlet of the water outlet assembly. The water purifier has the advantages that water in the raw water tank can circulate, bacteria and pollutants are not easy to breed, the pure water tank can be automatically cleaned, the service life of the filter element is not influenced, and the water purifier is sanitary to use.

Description

Technical Field

[0001] The utility model relates to a water channel structure of a desktop water purifier with a pure water reflux water channel structure. Background Art

[0002] Currently, countertop water purifiers in the industry generally use a combination of an external raw water tank and an internal pure water tank for water storage. On the one hand, the external raw water tank is static, preventing water from circulating, which can easily breed bacteria and other contaminants. This places a greater burden on the filter element during filtration, and these contaminants cannot be cleaned during normal use, shortening the filter element's lifespan. On the other hand, the internal pure water tank requires on-site disassembly and cleaning by a professional repair technician, resulting in high after-sales service costs. Summary of the Invention

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a desktop water purifier water channel structure with a pure water return water channel structure. The raw water tank water can circulate and is not easy to breed bacteria and pollutants. The pure water tank can be automatically cleaned without affecting the service life of the filter element. The after-sales cost is low and the water purifier is hygienic to use.

[0004] In order to achieve the above-mentioned purpose, the technical solution of the utility model is realized as follows: it is a water channel structure of a desktop water purifier with a pure water return water channel structure, which is characterized by comprising:

[0005] A raw water tank and a reversing solenoid valve; the reversing solenoid valve has two water inlets and one water outlet, and the water outlet of the raw water tank is connected to a water inlet of the reversing solenoid valve;

[0006] A self-priming pump, a filter assembly and a flushing solenoid valve; the water inlet of the self-priming pump is connected to the water outlet of the reversing solenoid valve, the filter assembly has a water inlet, a water return port and a water outlet, the water outlet of the self-priming pump is connected to the water inlet of the filter assembly, the water return port of the filter assembly is connected to the water inlet of the flushing solenoid valve, and the water outlet of the flushing solenoid valve is connected to the water inlet of the raw water tank; and

[0007] Pure water tank, water pump and water outlet assembly; the pure water tank has a water inlet and two water outlets, the water inlet of the pure water tank is connected to the water outlet of the filter assembly, one water outlet of the pure water tank is connected to the other water inlet of the reversing solenoid valve, the other water outlet of the pure water tank is connected to the water inlet of the water outlet assembly, and the water outlet of the water outlet assembly is connected to the outside world.

[0008] In the present technical solution, the filter assembly includes a pre-filter module, an RO filter module and a post-filter module. The pre-filter module, the RO filter module and the post-filter module are connected in sequence. The water inlet of the pre-filter module is connected to the water outlet of the self-priming pump, the wastewater outlet of the RO filter module is connected to the water inlet of the flushing solenoid valve, and the water outlet of the post-filter module is connected to the water inlet of the pure water tank.

[0009] This technical solution also includes a water tank sensor and a liquid sensor; the water tank sensor is installed in the raw water tank, and the liquid sensor is installed on a pipe connecting the water outlet of the raw water tank and a water inlet of the reversing solenoid valve.

[0010] This technical solution also includes a liquid level switch, which is installed in the pure water tank.

[0011] In this technical solution, the water outlet component includes a water inlet module and a water outlet nozzle, and the water inlet module and the water outlet nozzle are connected in sequence. The water inlet of the water inlet module is connected to the water pump, and the water outlet of the water outlet nozzle is connected to the outside world. The water inlet module is a heating structure or a cooling structure.

[0012] In the present technical solution, a TDS detector is provided on a pipe connecting the water outlet of the post-filtration module and the water inlet of the pure water tank.

[0013] In this technical solution, a water inlet temperature controller is provided on the pipe connecting the water inlet of the water inlet module and the water pump.

[0014] Compared with the prior art, the advantages of the utility model are: the water in the raw water tank can circulate, and is not easy to breed bacteria and pollutants; the pure water tank can be automatically cleaned, which will not affect the service life of the filter element; the after-sales cost is low, and the water purifier is hygienic to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a waterway schematic diagram of the present utility model. DETAILED DESCRIPTION

[0016] The following further describes specific embodiments of the present invention in conjunction with the accompanying drawings. It should be noted that the descriptions of these embodiments are intended to facilitate understanding of the present invention and do not constitute limitations on the present invention. Furthermore, the technical features involved in the various embodiments of the present invention described below may be combined with one another as long as they do not conflict with one another.

[0017] like Figure 1 As shown, it is a desktop water purifier waterway structure with a pure water return waterway structure, including:

[0018] A raw water tank 1 and a reversing solenoid valve 2; the reversing solenoid valve 2 has two water inlets and one water outlet, and the water outlet of the raw water tank 1 is connected to a water inlet of the reversing solenoid valve 2;

[0019] A self-priming pump 3, a filter assembly and a flushing solenoid valve 12; the water inlet of the self-priming pump 3 is connected to the water outlet of the reversing solenoid valve 2, the filter assembly has a water inlet, a water return port and a water outlet, the water outlet of the self-priming pump 3 is connected to the water inlet of the filter assembly, the water return port of the filter assembly is connected to the water inlet of the flushing solenoid valve 12, and the water outlet of the flushing solenoid valve 12 is connected to the water inlet of the raw water tank 1; and

[0020] Pure water tank 7, water pump 9 and water outlet assembly; the pure water tank 7 has a water inlet and two water outlets, the water inlet of the pure water tank 7 is connected to the water outlet of the filter assembly, one water outlet of the pure water tank 7 is connected to the other water inlet of the reversing solenoid valve 2, the other water outlet of the pure water tank 7 is connected to the water inlet of the water outlet assembly, and the water outlet of the water outlet assembly is connected to the outside world.

[0021] When working: including normal pure water production waterway and pure water return waterway;

[0022] When the pure water reflux water circuit is not started, one water inlet of the reversing solenoid valve 2 is opened, the other water inlet of the reversing solenoid valve 2 is closed, and the water outlet of the reversing solenoid valve 2 is opened. At this time, the pure water circuit is normally made. The water outlet of the raw water tank 1 is connected to one water inlet of the reversing solenoid valve 2, and the water outlet of the reversing solenoid valve 2 is connected to the water inlet of the self-priming pump 3. The water at the water outlet of the self-priming pump 3 is connected to the filter assembly and the pure water tank 7, and then flows out through the water pump 9 and the water outlet assembly;

[0023] When the pure water reflux waterway is started, one water inlet of the reversing solenoid valve 2 is closed, the other water inlet of the reversing solenoid valve 2 is opened, and the water outlet of the reversing solenoid valve 2 is opened. At this time, it is a pure water reflux waterway, one water outlet of the pure water tank 7 is connected to the other water inlet of the reversing solenoid valve 2, the water outlet of the reversing solenoid valve 2 is connected to the water inlet of the self-priming pump 3, and the water outlet of the self-priming pump 3 is connected to the filter assembly;

[0024] The above system can evacuate the pure water in the pure water tank 7 through the self-priming pump 3 and return it to the front of the filter assembly, which can not only clean the pure water tank 7 and prevent bacteria from growing, but also allow the RO membrane to soak in pure water to reduce the TDS increase caused by the forward osmosis of ions.

[0025] The normal pure water circuit and the pure water return circuit both use the same self-priming pump 3 as a pressure booster, and no additional water pump is needed to achieve the return of pure water, saving internal space of the machine;

[0026] A reversing solenoid valve 2 with dual water inlets and a single water outlet is used, and the dual water inlets can be switched, thereby preventing the self-priming pump 3 from pumping raw water from the raw water tank 1 when pumping pure water from the pure water tank 7 .

[0027] In this embodiment, the filter assembly includes a pre-filter module 4, an RO filter module 5 and a post-filter module 6. The pre-filter module 4, the RO filter module 5 and the post-filter module 6 are connected in sequence. The water inlet of the pre-filter module 4 is connected to the water outlet of the self-priming pump 3, the wastewater outlet of the RO filter module 5 is connected to the water inlet of the flushing solenoid valve 12, and the water outlet of the post-filter module 6 is connected to the water inlet of the pure water tank 7.

[0028] In this embodiment, a water tank sensor 13 and a liquid sensor 14 are also included; the water tank sensor 13 is installed in the raw water tank 1, and the liquid sensor 14 is installed on a pipe connecting the water outlet of the raw water tank 1 and a water inlet of the reversing solenoid valve 2.

[0029] In this embodiment, a liquid level switch 8 is further included, and the liquid level switch 8 is installed in the pure water tank 7 .

[0030] In this embodiment, the water outlet component includes a water inlet module 10 and a water outlet nozzle 11. The water inlet module 10 and the water outlet nozzle 11 are connected in sequence. The water inlet of the water inlet module 10 is connected to the water pump 9, and the water outlet of the water outlet nozzle 11 is connected to the outside world. 5. The water inlet module 10 is a heating structure or a cooling structure.

[0031] In this embodiment, a TDS detector is provided on the pipe connecting the water outlet of the post-filtration module 6 and the water inlet of the pure water tank 7 .

[0032] In this embodiment, a water inlet temperature controller is provided on the pipe connecting the water inlet of the water inlet module 10 and the water pump 9 .

[0033] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations to these embodiments without departing from the principles and purpose of the present invention are still within the scope of protection of the present invention.

Claims

1. A water channel structure of a desktop water purifier with a pure water return water channel structure, characterized in that include: A raw water tank (1) and a reversing solenoid valve (2); the reversing solenoid valve (2) has two water inlets and one water outlet, and the water outlet of the raw water tank (1) is connected to a water inlet of the reversing solenoid valve (2); A self-priming pump (3), a filter assembly and a flushing solenoid valve (12); the water inlet of the self-priming pump (3) is connected to the water outlet of the reversing solenoid valve (2); the filter assembly has a water inlet, a water return port and a water outlet; the water outlet of the self-priming pump (3) is connected to the water inlet of the filter assembly, the water return port of the filter assembly is connected to the water inlet of the flushing solenoid valve (12), and the water outlet of the flushing solenoid valve (12) is connected to the water inlet of the raw water tank (1); and A pure water tank (7), a water pump (9) and a water outlet assembly; the pure water tank (7) has a water inlet and two water outlets, the water inlet of the pure water tank (7) is connected to the water outlet of the filter assembly, one water outlet of the pure water tank (7) is connected to the other water inlet of the reversing solenoid valve (2), the other water outlet of the pure water tank (7) is connected to the water inlet of the water outlet assembly, and the water outlet of the water outlet assembly is connected to the outside.

2. The water channel structure of a desktop water purifier with a pure water return water channel structure according to claim 1 is characterized in that The filter assembly comprises a pre-filter module (4), an RO filter module (5) and a post-filter module (6); the pre-filter module (4), the RO filter module (5) and the post-filter module (6) are connected in sequence; the water inlet of the pre-filter module (4) is connected to the water outlet of the self-priming pump (3); the wastewater outlet of the RO filter module (5) is connected to the water inlet of the flushing solenoid valve (12); and the water outlet of the post-filter module (6) is connected to the water inlet of the pure water tank (7).

3. The water channel structure of a desktop water purifier with a pure water return water channel structure according to claim 1 is characterized in that It also includes a water tank sensor (13) and a liquid sensor (14); the water tank sensor (13) is installed in the raw water tank (1), and the liquid sensor (14) is installed on a pipe connecting the water outlet of the raw water tank (1) and a water inlet of the reversing solenoid valve (2).

4. The water channel structure of a desktop water purifier with a pure water return water channel structure according to claim 1 is characterized in that It also includes a liquid level switch (8), which is installed in the pure water tank (7).

5. The water channel structure of a desktop water purifier with a pure water return water channel structure according to claim 1 is characterized in that The water outlet assembly comprises a water inlet module (10) and a water outlet nozzle (11), the water inlet module (10) and the water outlet nozzle (11) are connected in sequence, the water inlet of the water inlet module (10) is connected to the water pump (9), and the water outlet of the water outlet nozzle (11) is connected to the outside world, and the water inlet module (10) is a heating structure or a cooling structure.

6. The water channel structure of a desktop water purifier with a pure water return water channel structure according to claim 2 is characterized in that A TDS detector is provided on a pipe connecting the water outlet of the post-filter module (6) and the water inlet of the pure water tank (7).

7. The water channel structure of a desktop water purifier with a pure water return water channel structure according to claim 5 is characterized in that A water inlet temperature controller is provided on a pipe connecting the water inlet of the water inlet module (10) and the water pump (9).

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