一种自清洗RO净水机
By designing a self-cleaning RO water purifier, utilizing a three-stage filtration structure of diatomaceous earth filter and activated carbon filter, combined with RO membrane concentrate backwashing, the problem of frequent filter replacement in water purifiers is solved, achieving extended filter life and environmentally friendly and efficient water purification results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- MEIJING COMMERCIAL EQUIPMENT (SUZHOU) CO LTD
- Filing Date
- 2025-07-14
- Publication Date
- 2026-07-17
AI Technical Summary
The frequent replacement of filter cartridges in existing water purifiers is quite troublesome, affecting usage and water quality, and the waiting time for replacement is uncertain.
The self-cleaning RO water purifier uses a diatomaceous earth filter to replace the traditional PP filter cartridge, combining a three-stage filtration structure of activated carbon filter cartridge and PP filter cartridge, and uses the concentrated water from the RO membrane structure for backwashing to achieve automatic cleaning of the filter cartridge.
It extends the lifespan of the filter cartridge by about 2-3 times, avoiding the hassle of frequent replacements, conforming to the green, low-carbon and environmentally friendly concept, and improving the convenience of use and water quality stability.
Smart Images
Figure CN224513330U_ABST
Abstract
Claims
1. A self-cleaning RO water purifier, characterized in that, include: The water to be treated enters from the top of the front-end filter for filtration. The back-end filter is provided with two sets that are used alternately. Each set of back-end filters includes an activated carbon filter and a PP filter connected in sequence. The inlet pipe of the back-end filter is connected to the outlet of the front-end filter. The outlet of the back-end filter is connected to the front-end filter through a first backwash pipe for backwashing the front-end filter. The RO membrane structure has its inlet end connected to the outlet end of the downstream filter via a filter outlet pipe. The concentrate outlet of the RO membrane structure is guided to the activated carbon filter and PP filter of the back-end filter through the second backwash pipeline. During the alternating use of the two sets of back-end filters, the set of back-end filters in the idle state is backwashed. The pressure tank is connected to the pure water outlet pipe of the RO membrane structure and is used to store purified fresh water.
2. The self-cleaning RO water purifier according to claim 1, wherein A first pressure sensor is installed on the top of the front-end filter, and a first backwash valve is installed on the first backwash pipeline to control the opening or closing of the first backwash pipeline; When the first pressure sensor reaches the set threshold, the first backwash valve opens the first backwash pipeline, and the water in the filtered water outlet pipeline is diverted back to the front-end filter, thus initiating the backwashing operation on the front-end filter.
3. The self-cleaning RO water purifier according to claim 2, wherein A second pressure sensor is installed on the filtered water outlet pipeline; a second backwash valve is installed on the second backwash pipeline to control the opening of the second backwash pipeline. When the water flow is blocked, the second pressure sensor detects a pressure change and switches the operating status of the two sets of back-end filters. The second backwash valve opens the second backwash pipeline and starts the air-water washing mode for the set of back-end filters that has been switched to the idle state to perform self-cleaning operation.
4. The self-cleaning RO water purifier according to claim 2 or 3, characterized in that, A booster pump is installed on the filtered water outlet pipeline, and an ejector is installed on the concentrated water outlet pipeline of the RO membrane structure. The booster pump is used to assist the multi-front-end filter in backwashing; The booster pump works in conjunction with the jet injector to pressurize and increase the flow of water used for backwashing, thereby rinsing and cleaning the filter elements of the activated carbon filter and the PP filter.
5. The self-cleaning RO water purifier as claimed in claim 2, wherein A filter cartridge inlet valve is installed on the inlet pipe of the activated carbon filter cartridge, and a backwash outlet valve is installed on the common outlet pipe of the backwash outlet of the activated carbon filter cartridge and the PP filter cartridge. A first backwash valve and a second backwash valve are respectively installed at the bottom of the activated carbon filter and the PP filter, and a second activated carbon filter is installed on the second backwash pipeline.
6. The self-cleaning RO water purifier as claimed in claim 1, wherein An RO membrane inlet valve is installed on the inlet pipe of the RO membrane structure, and an RO membrane pure water outlet valve is installed on the pure water outlet pipe of the RO membrane structure.
7. The self-cleaning RO water purifier as claimed in claim 1, wherein the said water purifier is provided with a water level sensor (12) and a float valve (13) for controlling the water level in the said storage tank (11). The front-end filter is a diatomaceous earth filter, filled with 200-mesh diatomaceous earth.