A water purifier with a pressure tank and a backflow flushing mechanism

Abstract

This utility model relates to a water purifier with a pressure tank and a backflow flushing capability, including a composite filter element, an inlet solenoid valve, a booster pump, an RO filter element, a high-pressure switch, a pressure tank, a backflow solenoid valve, an outlet component, and a wastewater valve. It features a built-in pressure tank. When the user is not using water and the machine is in standby mode, water is stored in the pressure tank. The next time the user draws water, the water volume and pressure will be greater, providing a better experience. The RO membrane is soaked or rinsed with pure water from the pressure tank, reducing the TDS value of the first cup of water and lowering the salt content within the RO membrane, ensuring the first cup of water meets drinking standards and extending the lifespan of the RO filter element.

Description

Technical Field

[0001] This utility model relates to a water purifier with a pressure tank and a backflow flushing function. Background Technology

[0002] Currently, water purifiers on the market have relatively low water volume and pressure, requiring a long time to fill a cup. Moreover, the first cup of water has a high TDS value, which does not meet drinking standards. After the filter cartridge has been unused for a long time, high-salt residual water remains inside, which can easily clog the RO membrane, resulting in poor water flow. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a water purifier with a pressure tank and a backflow flushing mechanism. The RO membrane is soaked or rinsed with pure water from the pressure tank, thereby reducing the TDS value of the first cup of water and lowering the salt content within the RO membrane, ensuring the first cup of water meets drinking standards and extending the lifespan of the RO filter. Furthermore, the built-in pressure tank allows for water storage when the machine is not in use or is in standby mode. This ensures that the water volume and pressure are greater when the user draws water next time, providing a better user experience.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows: it is a water purifier with a pressure tank and a backflow flushing capability, characterized by comprising: A composite filter element; the composite filter element is provided with an inlet, a first outlet, and a second outlet; The system includes an inlet solenoid valve, a booster pump, and an RO filter element. The RO filter element has an inlet, an outlet, and a wastewater outlet. The inlet of the inlet solenoid valve is connected to the second outlet of the composite filter element. The outlet of the inlet solenoid valve, the booster pump, and the inlet of the RO filter element are connected in sequence. High-pressure switch, pressure tank and reflux solenoid valve; the outlet of the RO filter element is connected to the inlet of the pressure tank, the high-pressure switch is installed on the pipeline connecting the RO filter element and the pressure tank, the outlet of the pressure tank has two water paths, one of which is connected to the inlet of the booster pump through the reflux solenoid valve. A water outlet component; the water outlet component has a first water outlet channel and a second water outlet channel, the inlet of the first water outlet channel is connected to the first water outlet of the composite filter element, the inlet of the second water outlet channel is connected to another water passage of the pressure tank outlet, and the outlets of the first and second water outlet channels are open to the outside; and Wastewater valve; the wastewater outlet of the RO filter element is connected to the outside through the wastewater valve.

[0005] This technical solution also includes a check valve; the check valve is installed on the pipeline connecting the first water outlet channel and the first water outlet of the composite filter element.

[0006] The advantages of this invention compared to existing technologies are as follows: the machine has a built-in pressure tank. When the user is not using water and the machine is in standby mode, water will be stored in the pressure tank first. When the user takes water next time, the water volume and water pressure will be greater, resulting in a better experience. The RO membrane is soaked in pure water from the pressure tank or rinsed with pure water, thereby reducing the TDS value of the first cup of water and the salt content in the RO membrane, making the first cup of water meet drinking standards and improving the lifespan of the RO filter. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the waterway of this utility model. Detailed Implementation

[0008] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0009] like Figure 1 The diagram shows a water purifier with a pressure tank and a backflow flushing system, including: Composite filter element 1; the composite filter element 1 is provided with an inlet, a first outlet and a second outlet; The inlet solenoid valve 2, the booster pump 3, and the RO filter element 4 are connected in sequence. The inlet of the inlet solenoid valve 2 is connected to the second outlet of the composite filter element 1, and the outlet of the inlet solenoid valve 2, the booster pump 3, and the inlet of the RO filter element 4 are connected in sequence. The system includes a high-pressure switch 7, a pressure tank 9, and a reflux solenoid valve 5. The RO filter element 4 has an inlet, an outlet, and a wastewater outlet. The outlet of the RO filter element 4 is connected to the inlet of the pressure tank 9. The high-pressure switch 7 is located on the pipeline connecting the RO filter element 4 and the pressure tank 9. The outlet of the pressure tank 9 has two water paths, one of which is connected to the inlet of the booster pump 3 through the reflux solenoid valve 5. Water outlet component 10; the water outlet component 10 has a first water outlet channel 101 and a second water outlet channel 102, the inlet of the first water outlet channel 101 is connected to the first water outlet of the composite filter element 1, the inlet of the second water outlet channel 102 is connected to another water passage of the pressure tank 9, and the outlets of the first water outlet channel 101 and the second water outlet channel 102 are connected to the outside; and Wastewater valve 6; the wastewater outlet of the RO filter element 4 is connected to the outside through wastewater valve 6.

[0010] During operation, after the machine is powered on, the high-pressure switch 7 detects the pressure value inside the pressure tank 9. If the pressure is lower than the set value, the inlet solenoid valve 2 and the booster pump 3 operate to produce water into the pressure tank 9. When the pressure is higher than the set value, the production of water into the pressure tank 9 stops. When the water tap switches to the pure water output mode, i.e., the second water outlet channel 102 is open, the high-pressure pure water in the pressure tank 9 flows out to the water outlet 10, causing a large volume of high-pressure pure water to flow out of the water outlet 10. When water is being discharged from the pressure tank 9, the high-pressure switch 7 detects a pressure drop and starts producing water into the pressure tank 9, allowing the machine to continuously output water. When the tap is closed in the pure water output mode, the production of water into the pressure tank 9 continues until the set pressure value is reached and then stops. Methods to reduce the TDS value of the first glass of water: After the pressure tank 9 is full of water and the high pressure switch 7 reaches the set pressure value and enters the standby state, the timing begins. After the set time is reached, the return solenoid valve 5, the booster pump 4 and the wastewater valve 6 work to pour the pure water in the pressure tank 9 into the RO filter element 4, and discharge the water with high salt content through the wastewater valve 6. The RO membrane in the RO filter element 4 is soaked with pure water to reduce the TDS in the RO membrane so that the TDS value of the first cup of water meets the drinking standard. In this embodiment, a check valve 8 is also included; the check valve 8 is installed on the pipeline that connects the first water outlet channel 101 with the first water outlet of the composite filter element 1.

[0011] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations of these embodiments without departing from the principles and spirit of this utility model still fall within the protection scope of this utility model.

Claims

1. A water purifier with a pressure tank and a backflow flushing capability, characterized in that... include: Composite filter element (1); the composite filter element (1) is provided with an inlet, a first outlet and a second outlet; The inlet solenoid valve (2), the booster pump (3), and the RO filter element (4) are provided. The RO filter element (4) has an inlet, an outlet, and a wastewater outlet. The inlet of the inlet solenoid valve (2) is connected to the second outlet of the composite filter element (1). The outlet of the inlet solenoid valve (2), the booster pump (3), and the inlet of the RO filter element (4) are connected in sequence. High pressure switch (7), pressure tank (9) and reflux solenoid valve (5); the outlet of the RO filter element (4) is connected to the inlet of the pressure tank (9), the high pressure switch (7) is installed on the pipeline connecting the RO filter element (4) and the pressure tank (9), the outlet of the pressure tank (9) has two water paths, one of which is connected to the inlet of the booster pump (3) through the reflux solenoid valve (5); Water outlet component (10); the water outlet component (10) has a first water outlet channel (101) and a second water outlet channel (102), the inlet of the first water outlet channel (101) is connected to the first water outlet of the composite filter element (1), the inlet of the second water outlet channel (102) is connected to another water passage of the pressure tank (9), and the outlets of the first water outlet channel (101) and the second water outlet channel (102) are connected to the outside; and Wastewater valve (6); the wastewater outlet of the RO filter element (4) is connected to the outside through the wastewater valve (6).

2. The water purifier water circuit with pressure tank and backflow flushing capability according to claim 1, characterized in that... It also includes a check valve (8); the check valve (8) is installed on the pipeline that connects the first outlet channel (101) and the first outlet of the composite filter element (1).

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