CN212450904U

CN212450904U - Front composite filter element combination of reverse osmosis water purifier with high water efficiency

Info

Publication number: CN212450904U
Application number: CN202020917555.3U
Authority: CN
Inventors: 蒋鼎山; 敖攀
Original assignee: Shenzhen Inike Electrical Appliances Co Ltd
Current assignee: Shenzhen Inike Electrical Appliances Co Ltd
Priority date: 2020-05-26
Filing date: 2020-05-26
Publication date: 2021-02-02
Anticipated expiration: 2030-05-26

Abstract

The utility model discloses a leading combined filter core combination of reverse osmosis water purification machine of high water efficiency, the water quality condition of adaptable difference alleviates the filtration load of RO membrane by a wide margin, improves reverse osmosis water purification machine's water yield. Specifically, this leading composite filter core combination includes water purification filter core and at least one hinders dirty filter core, and water purification filter core and the filter core that hinders dirty communicate through the pipeline. The water purification filter core and the scale inhibition filter core both comprise hollow sintered activated carbon rods, microporous folding filter membranes are wound on the outer sides of the sintered activated carbon rods, end covers are arranged at two ends of each of the sintered activated carbon rods and the microporous folding filter membranes respectively, water through openings are formed in the end covers, and filter sponge plugs are clamped between the water through openings and the end portions of the sintered activated carbon rods. The scale inhibition filter element also comprises a silicon-phosphorus crystal filter body arranged in the hollow area of the sintered activated carbon rod.

Description

Front composite filter element combination of reverse osmosis water purifier with high water efficiency

Technical Field

The utility model relates to a technical field of aqueous cleaning, in particular to leading combined filter core combination of reverse osmosis water purification machine of high water efficiency.

Background

At present, the existing reverse osmosis water purifiers in China are basically American-like American water purifiers, and the front filter element combination of the American water purifiers adopts a simpler PP + GAC + PP or PP + GAC + CTO combination, and is only suitable for the water quality of American cities. The quality of domestic urban tap water has a large difference from international standards and national standards (GB5749-2006), and the quality of water in various regions in China is greatly different, so that the American water purification machine cannot be well suitable for domestic water quality, and an RO membrane is easily polluted, blocked or oxidized in use, thereby consuming water and materials.

Secondly, in order to save water, the state sets the water efficiency standard for the reverse osmosis water purifier (the first-level water efficiency requires that the water yield is more than 60%). However, the higher the water yield, the heavier the filtration load of the RO membrane, i.e., the more likely the RO membrane is to be fouled or oxidized. Therefore, under the condition of poorer water quality, the problem in the industry is that the water yield of the reverse osmosis water purifier is improved, and the total water purification quantity of the primary water efficiency of the American water purifier is very low (about 2 tons) so far, and the use requirement cannot be met.

SUMMERY OF THE UTILITY MODEL

The main objective of the utility model is to provide a leading composite filter core combination of reverse osmosis water purification machine of high water efficiency, its adaptable different quality of water condition alleviates the filtration load of RO membrane by a wide margin, improves reverse osmosis water purification machine's water production rate.

In order to achieve the above object, the utility model provides a reverse osmosis water purifier front composite filter core combination of high water efficiency, including water purification filter core and at least one anti-dirty filter core, the water purification filter core with anti-dirty filter core passes through the pipeline intercommunication. The water purification filter core all includes the sintering activated carbon rod that cavity set up with the filter core that hinders dirt, the outside winding of sintering activated carbon rod has micropore folding filtration membrane, sintering activated carbon rod with micropore folding filtration membrane's both ends are provided with the end cover respectively, just it leads to the water gap to have on the end cover, lead to the water gap with it is equipped with the filtration sponge stopper to press from both sides between the tip of sintering activated carbon rod. The scale inhibition filter element also comprises a silicon-phosphorus crystal filter body arranged in the hollow area of the sintered activated carbon rod.

Optionally, the filter sponge plug has an axial extension inserted into the hollow region of the sintered activated carbon rod.

Optionally, the microporous folding filter membrane comprises a first nonwoven fabric, a second nonwoven fabric, and at least two microporous filter membranes sandwiched between the first nonwoven fabric and the second nonwoven fabric.

Optionally, the scale inhibition filter element further comprises a mesh cover, and the mesh cover is arranged on the outer side of the micropore folding filtering membrane.

Optionally, the number of the scale inhibition filter elements is two, and the two scale inhibition filter elements are connected in parallel and then connected in series with the water purification filter element.

The utility model discloses a leading composite filter core that provides is through adopting the parallelly connected combination of many anti-dirt filter cores, and both multiplicable leading filter core's antipollution can improve the flux of leading filter core again by a wide margin for the flux of prefiltering and the total water purification volume demand phase-match of RO membrane improve the universality of purifier to water quality of all places. And each scale inhibition filter element is filled with silicon-phosphorus crystals, so that scale inhibition can be effectively realized, the filtration load of the RO membrane is reduced, the service life of the RO membrane is ensured, and a guarantee is provided for realizing high water efficiency of the RO membrane. Therefore, the high-water-efficiency reverse osmosis water purifier has feasibility in domestic popularization.

Drawings

FIG. 1 is a schematic structural view of an embodiment of the present invention, which is a front composite filter element combination of a reverse osmosis water purifier with high water efficiency;

FIG. 2 is a schematic cross-sectional view of a scale inhibiting filter element;

FIG. 3 is a cross-sectional view of a sintered activated carbon rod silicon and a microporous pleated filter membrane;

Detailed Description

The technical solutions in the embodiments of the present invention will be described in detail below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to the attached fig. 1, in the embodiment of the present invention, the advanced composite filter assembly of the reverse osmosis water purifier with high water efficiency includes a water inlet 100, two parallel-connected scale inhibiting filter elements 200, a water purifying filter element 300 and a water outlet 400. The water inlet 100, the two scale inhibiting filter elements 200, the water purifying filter element 300 and the water outlet 400 which are connected in parallel are sequentially communicated through a pipeline, raw water flows in from the water inlet 100, is filtered by the scale inhibiting filter element 200 and the water purifying filter element 300 and then flows out from the water outlet 400.

As shown in fig. 2, the filter structures of the scale inhibiting filter element 200 and the water purifying filter element 300 are substantially the same, and each of the scale inhibiting filter element and the water purifying filter element includes a sintered activated carbon rod 210, a micro-porous folding filter membrane 220 and two end caps 240. The sintered activated carbon rod 210 is hollow, the micro-porous folding filter membrane 220 is wound on the outer peripheral side of the sintered activated carbon rod 210, and the two end covers 240 are fixedly sealed at the two ends of the sintered activated carbon rod 210 and the micro-porous folding filter membrane 220 through adhesives. Both end caps 240 are further provided with water inlets 240a, and a filter sponge plug 250 is provided between the water inlets 240a and the sintered activated carbon rod 210. During filtration, raw water enters the hollow area 210a of the sintered activated carbon rod 210 through the microporous folding filter membrane 220 and the sintered activated carbon rod 210, and flows out of the water through port 240a of the end cover 240 through the filter sponge plug 250.

As shown in fig. 3, the microfiltration membrane 220 includes a first nonwoven fabric 221, a second nonwoven fabric 222 and at least one microfiltration membrane 223 sandwiched between the first nonwoven fabric 221 and the second nonwoven fabric 222. The pore size of the microporous filter membrane 223 is between 0.01 and 0.1 micron, and the thickness is between 1 and 1000 micron. When raw water passes through the microporous filter film 223, particle impurities in the water body, such as suspended matters, colloids, microorganisms and the like, can be effectively intercepted and filtered. The first and second

non-woven fabrics

221 and 222 serve to protect the micro filtration membrane 223. In the present embodiment, the microporous folding filter membrane 220 is formed by sequentially stacking a first nonwoven fabric 221, a microporous filter membrane 223 and a second nonwoven fabric 222. It should be noted that the pore size, thickness and number of the microfiltration membrane 223 depend on the particular actual use.

The sintered activated carbon rod 210 is formed by mixing an activated carbon powder material and a high-molecular hot-melt pore-forming material, pouring the mixture into a special mold, and sintering at the high temperature of 200-300 ℃. When the raw water passes through the sintered activated carbon rod 210, free residual chlorine in the purified water may be adsorbed.

In this embodiment, the hollow region 210a of the sintered activated carbon rod 210 of the scale inhibiting filter element 200 is further filled with silicon-phosphorus crystals to form a silicon-phosphorus crystal filter 230. When raw water flows into the silicon-phosphorus crystal filter 230, calcium and magnesium ions in the silicon-phosphorus crystal can be changed into soluble calcium-magnesium complex, so that the deposition and scaling of the calcium and magnesium ions on the RO membrane are avoided.

The utility model discloses a leading composite filter core through adopting the parallelly connected combination of many anti-dirt filter cores 200, both multiplicable leading filter core's antipollution can improve the flux of leading filter core again by a wide margin for the flux of prefiltering and the total water purification volume demand phase-match of RO membrane improve the universality of purifier to water quality of all places. In addition, silicon-phosphorus crystals are filled in each scale inhibition filter element 210, so that scale inhibition can be effectively realized, the filtration load of the RO membrane can be reduced, the service life of the RO membrane can be ensured, and a guarantee is provided for realizing high water efficiency of the RO membrane. Therefore, the high-water-efficiency reverse osmosis water purifier has feasibility in domestic popularization.

Compare with the leading filter core combination of current American, the utility model discloses possess following advantage:

1. the scale inhibition filter element 200 and the water purification filter element 300 can form two-stage filtration with high filtration precision, and the SDI (namely the sludge density contamination index value) after the two-stage filtration is less than 1.

2. The scale inhibition filter element 200 is filled with silicon-phosphorus crystals, so that 90-100% of calcium and magnesium ions in water can be changed into soluble calcium-magnesium complex, the deposition and scaling of the calcium and magnesium ions on the RO membrane can be effectively prevented, and the total hardness removal rate of the RO membrane is more than 95% (more than 90% specified by national standard).

3. The scale inhibition filter element 200 and the water purification filter element 300 have high adsorbability, the sintered activated carbon rod 210 can form secondary filtration and adsorption, the adsorption capacity is strong, the raw water can be filtered and colloid in the water can be removed with high precision, and the residual chlorine in the raw water can be less than 0.005PPM (which is far less than the requirement of the specification of less than 0.1 PPM), so that the RO membrane is prevented from being oxidized, and the desalination rate of the RO membrane is ensured. Meanwhile, the water-soluble gas can be adsorbed after the first adsorption, so that the water quality and the taste are improved.

4. Flux matches, and play water at scale inhibition filter core 200 and water purification filter core 3000 both ends, it is efficient to go out the water, combines the parallel combination of inhibiting dirty filter core 200, improves the flux of leading filter core combination by a wide margin for flux after the prefiltering matches with RO membrane total water purification volume.

Alternatively, in the present embodiment, the filter sponge plug 250 has an axial extension 250a, and the axial extension 250a is inserted into the hollow region 210a of the sintered activated carbon rod 210 to control the diffusion rate of the silicon phosphorus crystal.

Optionally, in this embodiment, the scale inhibiting filter element 200 further includes a mesh cover 260, and the mesh cover 260 is sleeved outside the micro-porous folding filter membrane 220 to bind the micro-porous folding filter membrane 220 and avoid deformation in water flow impact.

The above is only the preferred embodiment of the present invention, not used in the present invention, and any slight modifications, equivalent replacements and improvements made by the technical entity of the present invention to the above embodiments should be included in the protection scope of the technical solution of the present invention.

Claims

1. A high-water-efficiency reverse osmosis water purifier front composite filter element combination is characterized by comprising a water purification filter element and at least one scale inhibition filter element, wherein the water purification filter element is communicated with the scale inhibition filter element through a pipeline;

the water purification filter element and the scale inhibition filter element respectively comprise a sintered activated carbon rod which is arranged in a hollow manner, a micropore folding filter membrane is wound on the outer side of the sintered activated carbon rod, end covers are respectively arranged at two ends of the sintered activated carbon rod and two ends of the micropore folding filter membrane, a water through hole is formed in each end cover, and a filter sponge plug is clamped between each water through hole and the end part of the sintered activated carbon rod;

the scale inhibition filter element also comprises a silicon-phosphorus crystal filter body arranged in the hollow area of the sintered activated carbon rod.

2. The water efficient reverse osmosis water purifier front composite filter element combination according to claim 1, wherein the filter sponge plug has an axial extension inserted into the hollow area of the sintered activated carbon rod.

3. The pre-composite filter element assembly of claim 1, wherein the microporous folding filter membrane comprises a first nonwoven fabric, a second nonwoven fabric, and at least two microporous filter membranes sandwiched between the first nonwoven fabric and the second nonwoven fabric.

4. The advanced composite filter element assembly for reverse osmosis water purifier as claimed in claim 1, wherein said scale inhibiting filter element further comprises a mesh cover, said mesh cover is disposed outside said microporous folding filter membrane.

5. The front composite filter element combination of the reverse osmosis water purifier with high water efficiency as claimed in any one of claims 1 to 4, wherein the number of the scale inhibition filter elements is two, and the two scale inhibition filter elements are connected in parallel and then connected in series with the water purification filter elements.