Hollow fiber nanofiltration water purification device
The multi-stage filtration system of the hollow fiber nanofiltration water purifier solves the problem that existing water purifiers cannot retain beneficial minerals and trace elements, achieving efficient water purification and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI KOHI TECH CO LTD
- Filing Date
- 2025-05-23
- Publication Date
- 2026-05-12
AI Technical Summary
Existing household water purifiers cannot effectively retain beneficial minerals and trace elements when purifying water, and they also generate a lot of wastewater and have high costs.
The hollow fiber nanofiltration water purification device uses a multi-stage filtration system, including an inlet pipe, a PP melt-blown filter, an activated carbon filter, and a hollow fiber nanofiltration membrane, to achieve multi-stage purification of domestic water, retaining beneficial minerals and trace elements, while discharging divalent pollutants in the wastewater.
It improves water purification quality, retains beneficial minerals and trace elements, reduces usage costs, and meets human health needs.
Smart Images
Figure CN224226840U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of domestic water purification technology, and in particular to a hollow fiber nanofiltration water purification device. Background Technology
[0002] Currently, in the field of household water purification, the mainstream types are ultrafiltration water purifiers and reverse osmosis water purifiers. Ultrafiltration water purifiers do not require pressurization equipment or power supply, do not produce wastewater, and have lower filter replacement costs. Reverse osmosis water purifiers produce very good water quality, removing almost all pollutants, including anions and cations.
[0003] Disadvantages of ultrafiltration water purifiers: The purified water quality is generally average, and it does not remove most of the anions and cations; Disadvantages of reverse osmosis water purifiers: The inlet water needs to be increased, an external power supply is required, a large amount of wastewater (reverse osmosis concentrate) is generated, and the cost of replacing the filter cartridge is relatively high; Because reverse osmosis removes all anions and cations as well as minerals and trace elements that are beneficial to the human body, it is not the optimal solution for human health.
[0004] In conclusion, it is essential to propose a hollow fiber nanofiltration water purification device that effectively purifies water, retains beneficial minerals and trace elements, and better meets human needs. Utility Model Content
[0005] The purpose of this invention is to provide a hollow fiber nanofiltration water purification device that can improve the purification effect of domestic water, purify the water of good quality, and retain minerals and trace elements that are beneficial to the human body, thus better meeting human needs.
[0006] To achieve the above objectives, this utility model employs a hollow fiber nanofiltration water purification device, comprising an inlet pipe, a first PP melt-blown filter, a pre-activated carbon filter, a second PP melt-blown filter, a hollow fiber nanofiltration membrane, a post-activated carbon filter, and an outlet pipe. The first PP melt-blown filter is connected to the inlet pipe, the pre-activated carbon filter is connected to the first PP melt-blown filter, the second PP melt-blown filter is connected to the pre-activated carbon filter, one end of the hollow fiber nanofiltration membrane is connected to the second PP melt-blown filter, the post-activated carbon filter is connected to the other end of the hollow fiber nanofiltration membrane, and the outlet pipe is connected to the post-activated carbon filter.
[0007] The hollow fiber nanofiltration water purification device further includes a wastewater drain pipe, which is connected to the hollow fiber nanofiltration membrane and located at the end of the hollow fiber nanofiltration membrane away from the second PP meltblown filter.
[0008] The hollow fiber nanofiltration membrane has a filtration pore size at the nanofiltration level.
[0009] This utility model discloses a hollow fiber nanofiltration water purification device. In use, tap water is fed into the first PP melt-blown filter through the inlet pipe for primary filtration to remove larger particles of impurities. The primary filtered water then enters the pre-activated carbon filter for secondary filtration to remove organic pollutants and residual chlorine. The secondary filtered water then enters the second PP melt-blown filter for tertiary filtration to intercept activated carbon debris generated during secondary filtration. Finally, the tertiary filtered water enters the hollow fiber nanofiltration membrane for membrane purification. The nanofiltration membrane effectively removes residual organic and inorganic pollutants after tertiary filtration. Monovalent anions and cations permeate through the membrane and remain in the product water, while divalent anions, cations, and other pollutants are retained in the concentrate and discharged as wastewater. Essential minerals and trace elements are retained. Finally, the product water from the hollow fiber nanofiltration membrane undergoes final filtration through the post-activated carbon filter to improve taste before being used as household drinking water. This method achieves improved purification of domestic water, resulting in high-quality purified water that retains beneficial minerals and trace elements, better meeting human needs. Attached Figure Description
[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0011] Figure 1 This is a schematic diagram of the hollow fiber nanofiltration water purification device of this utility model.
[0012] 101-Inlet pipe, 102-First PP melt-blown filter, 103-Pre-activated carbon filter, 104-Second PP melt-blown filter, 105-Hollow fiber nanofiltration membrane, 106-Post-activated carbon filter, 107-Outlet pipe, 108-Wastewater drain pipe. Detailed Implementation
[0013] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.
[0014] Please see Figure 1 , Figure 1 This is a schematic diagram of the hollow fiber nanofiltration water purification device of this utility model.
[0015] This utility model provides a hollow fiber nanofiltration water purification device, comprising an inlet pipe 101, a first PP melt-blown filter 102, a pre-activated carbon filter 103, a second PP melt-blown filter 104, a hollow fiber nanofiltration membrane 105, a post-activated carbon filter 106, and an outlet pipe 107. The first PP melt-blown filter 102 is connected to the inlet pipe 101, the pre-activated carbon filter 103 is connected to the first PP melt-blown filter 102, the second PP melt-blown filter 104 is connected to the pre-activated carbon filter 103, one end of the hollow fiber nanofiltration membrane 105 is connected to the second PP melt-blown filter 104, the post-activated carbon filter 106 is connected to the other end of the hollow fiber nanofiltration membrane 105, and the outlet pipe 107 is connected to the post-activated carbon filter 106.
[0016] In this embodiment, during use, tap water is fed into the first PP melt-blown filter 102 through the inlet pipe 101 for primary filtration to remove larger particles of impurities. The primary filtered water then enters the pre-activated carbon filter 103 for secondary filtration to remove organic pollutants and residual chlorine. The secondary filtered water then enters the second PP melt-blown filter 104 for tertiary filtration to intercept activated carbon debris generated during secondary filtration. Finally, the tertiary filtered water enters the hollow fiber nanofiltration membrane 105 for membrane purification. The nanofiltration membrane may have… The hollow fiber nanofiltration membrane effectively removes residual organic and inorganic pollutants after three-stage filtration. Monovalent anions and cations permeate through the membrane and remain in the product water, while divalent anions, cations, and other pollutants are trapped in the concentrate and discharged as wastewater. It retains the minerals and trace elements needed by the human body. Finally, the product water from the hollow fiber nanofiltration membrane 105 undergoes final filtration through the post-activated carbon filter 106, improving the taste before being used as household drinking water. In the above method, the purification effect of domestic water is improved, the purified water quality is excellent, and the minerals and trace elements beneficial to the human body are retained, which is more in line with human needs.
[0017] Furthermore, the hollow fiber nanofiltration water purification device also includes a wastewater drain pipe 108, which is connected to the hollow fiber nanofiltration membrane 105 and located at the end of the hollow fiber nanofiltration membrane 105 away from the second PP melt-blown filter 104.
[0018] In this embodiment, when the effluent from the three-stage filtration enters the hollow fiber nanofiltration membrane 105 for membrane purification, the hollow fiber nanofiltration membrane 105 can effectively remove the organic and inorganic pollutants remaining after the three-stage filtration. Among them, monovalent anions and cations permeate through the membrane and remain in the product water, while divalent anions and cations and other pollutants are trapped in the concentrate. Finally, the wastewater is discharged through the wastewater drain pipe 108.
[0019] Furthermore, the filtration pore size of the hollow fiber nanofiltration membrane 105 is at the nanofiltration level.
[0020] In this embodiment, the hollow fiber nanofiltration membrane 105 has a nanofiltration-level filtration pore size, and its structure and material are consistent with those of traditional ultrafiltration membranes. It is inexpensive, has broad application prospects, and greatly reduces the cost of use.
[0021] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.
Claims
1. A hollow fiber nanofiltration water purification device, characterized in that, The system includes an inlet pipe, a first PP melt-blown filter, a pre-activated carbon filter, a second PP melt-blown filter, a hollow fiber nanofiltration membrane, a post-activated carbon filter, and an outlet pipe. The first PP melt-blown filter is connected to the inlet pipe, the pre-activated carbon filter is connected to the first PP melt-blown filter, the second PP melt-blown filter is connected to the pre-activated carbon filter, one end of the hollow fiber nanofiltration membrane is connected to the second PP melt-blown filter, the post-activated carbon filter is connected to the other end of the hollow fiber nanofiltration membrane, and the outlet pipe is connected to the post-activated carbon filter.
2. The hollow fiber nanofiltration water purification device as described in claim 1, characterized in that, The hollow fiber nanofiltration water purification device also includes a wastewater drain pipe, which is connected to the hollow fiber nanofiltration membrane and located at the end of the hollow fiber nanofiltration membrane away from the second PP melt-blown filter.
3. The hollow fiber nanofiltration water purification device as described in claim 2, characterized in that, The filtration pore size of the hollow fiber nanofiltration membrane is at the nanofiltration level.