Drinking water filter element having arsenic-removing resin

Abstract

A drinking water filter element having an arsenic-removing resin. The drinking water filter element is equipped with a filter screen, a first PP cotton layer, an activated carbon layer, a second PP cotton layer, an arsenic-removing resin layer, and an ultrafiltration membrane in sequence from top to bottom. The filter element is equipped with the arsenic-removing resin layer, which can be used to filter out some arsenic ions in drinking water, thereby solving the problem of arsenic poisoning caused by long-term drinking of drinking water having an arsenic content that exceeds standards.

Description

Drinking water filter cartridge with arsenic removal resin TECHNICAL FIELD

[0001] The utility model relates to the field of water purification, in particular to filter core. BACKGROUND

[0002] Arsenic is a toxic carcinogen and a mutagen. Long-term drinking of high-arsenic water can cause chronic poisoning of the human body, causing skin cancer, black foot disease, blood vessel damage, etc.

[0003] UTILITY MODEL CONTENT

[0004] The utility model discloses a kind of drinking water filter cartridges with arsenic removal resin, to filter part of arsenic ion in drinking water.

[0005] Drinking water filter cartridge with arsenic removal resin, characterized in that, filter screen, first PP cotton layer, activated carbon layer, second PP cotton layer, arsenic removal resin layer, ultrafiltration membrane are sequentially provided from top to bottom.

[0006] First, the filter core of the utility model is provided with arsenic removal resin layer, part of arsenic ion in drinking water can be filtered by arsenic removal resin layer, so as to solve the situation that arsenic content in drinking water is overproof, arsenic poisoning caused by long-term drinking.Second, the utility model optimizes the material and position of each layer of drinking water filter cartridge, forms multiple precision filtration systems, which can not only remove arsenic in water, but also effectively remove heavy metals, bacteria, viruses, antibiotics and other impurities, so that the drinking water filtered by the utility model can be directly drunk.

[0007] Preferably, the upper portion of the shell is provided with a water inlet, and the lower portion of the shell is provided with a water outlet, the filter screen, the first PP cotton layer, the activated carbon layer, the second PP cotton layer, the arsenic removal resin layer and the ultrafiltration membrane are located in the shell, and are sequentially compressed from top to bottom. This structure is simple, and the layers are compressed with each other, which can effectively prevent the filter material from falling off.

[0008] Preferably, the shell comprises an upper shell body and a lower shell body, the upper shell body and the lower shell body are detachably connected, the filter screen, the first PP cotton layer, the activated carbon layer, the second PP cotton layer and the arsenic removal resin layer are located in the upper shell body, and the ultrafiltration membrane is located in the lower shell body. This scheme optimizes the structure of the shell and optimally allocates the filter materials in each layer, allows the upper shell body and the lower shell body to be detached, and after being detached, the upper shell body can be washed or the lower shell body can be replaced, thereby prolonging the service life of the utility model.

[0009] Preferably, the shell further comprises an ion exchange resin layer, and the ion exchange resin layer is located between the arsenic removal resin layer and the ultrafiltration membrane. Thus, the ion exchange resin is used to improve the filtration effect.

[0010] Preferably, the ion exchange resin layer is located in the upper shell. Thus, the arsenic removal resin layer is sandwiched by the ion exchange resin and the second PP cotton layer, so as to avoid the active substances in the arsenic removal resin layer from being separated during flushing.

[0011] Preferably, the upper shell and the lower shell are detachably connected by threads, one of the upper shell and the lower shell is provided with water drainage holes, the water drainage holes are at least three, the water drainage holes are located at the threads, and the highest water drainage hole is lower than the top of the threads, and the lowest water drainage hole is higher than the bottom of the threads. Thus, the water drainage holes are opened and closed by adjusting the screwing depth of the threads, so as to drain water during flushing.

[0012] Preferably, a coconut shell activated carbon layer is further included, and the coconut shell activated carbon layer is located below the ultrafiltration membrane. Thus, the taste is improved by the coconut shell activated carbon layer.

[0013] Preferably, a shell in the shape of a bucket is further included, and the shell is detachably connected below the outer shell, and a water drainage hole is provided on the bottom of the shell. Thus, the coconut shell activated carbon layer is contained in the shell. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 is a structural schematic view of the present application;

[0015] Fig. 2 is another structural schematic view of the present application;

[0016] Fig. 3 is another structural schematic view of the present application. DETAILED DESCRIPTION

[0017] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application is further described below in combination with specific drawings.

[0018] Referring to Figs. 1, 2 and 3, the drinking water filter core with arsenic removal resin is provided with a filter screen 1, a first PP cotton layer 2, an activated carbon layer 3, a second PP cotton layer 4, an arsenic removal resin layer 5 and an ultrafiltration membrane 6 from top to bottom.

[0019] Specific embodiment 1

[0020] The drinking water filter core with arsenic removal resin comprises an outer shell, the outer shell is provided with a water inlet at the top and a water outlet at the bottom, the filter screen 1, the first PP cotton layer 2, the activated carbon layer 3, the second PP cotton layer 4, the arsenic removal resin layer 5 and the ultrafiltration membrane 6 are located in the outer shell and are pressed from top to bottom.

[0021] Specific embodiment 2

[0022] The drinking water filter core with arsenic removing resin comprises a shell. The shell comprises an upper shell body and a lower shell body, the upper shell body and the lower shell body are detachably connected, a filter screen 1, a first PP cotton layer 2, an activated carbon layer 3, a second PP cotton layer 4 and an arsenic removing resin layer 5 are located in the upper shell body, and an ultrafiltration membrane 6 is located in the lower shell body. Thus, the filter layers in the upper shell body can be flushed or the lower shell body can be replaced after the upper shell body and the lower shell body are detached, thereby prolonging the service life of the drinking water filter core.

[0023] The arsenic removing resin layer 5 is preferably a resin layer rich in active alumina particles. At this time, the active alumina is regenerated by flushing with a sodium hydroxide solution.

[0024] In scheme one, the drinking water filter core with arsenic removing resin further comprises an ion exchange resin layer 7, the ion exchange resin layer 7 is located in the upper shell body and below the arsenic removing resin layer 5, and the second PP cotton layer 4 and the ion exchange resin layer 7 further prevent the active alumina particles from flowing out. The ion exchange resin layer 7 is preferably an ion exchange resin capable of adsorbing OH - , so that the filtered water is not too alkaline when used for the first time after flushing.

[0025] In scheme two, the upper shell body and the lower shell body are detachably connected by threads, one of the upper shell body and the lower shell body is provided with water drainage holes 8, the water drainage holes 8 are at least three, the water drainage holes 8 are located at the threads, the uppermost water drainage hole 8 is lower than the top of the threads, and the lowermost water drainage hole 8 is higher than the bottom of the threads. Thus, the opening and closing of the water drainage holes 8 are controlled by the depth of the threads between the upper shell body and the lower shell body, and the water drainage holes 8 are used to drain the water or the sodium hydroxide solution when the upper shell body is cleaned. The water drainage holes are preferably helical on the upper shell body, so that the heights of the water drainage holes are inconsistent. The diameters of the water drainage holes gradually increase from top to bottom, so as to adjust the water drainage speed and make it more convenient and labor-saving when the lower shell body is screwed.

[0026] Preferably, the top of the lower shell is inserted into the lower shell, the outer side wall of the lower shell is provided with external threads, the inner side wall of the upper shell is provided with internal threads, and the upper shell and the lower shell are threadedly connected by the external threads and the internal threads. The water drain hole 8 is opened in the upper shell. The edge of the ion exchange resin is pressed against the internal threads. Thus, the ion exchange resin is supported by the internal threads. The top of the ultrafiltration membrane 6 is not lower than the top of the outer shell. Thus, after the lower shell and the upper shell are connected, the distance between the ultrafiltration membrane 6 and the ion exchange resin is reduced, and the ultrafiltration membrane 6 is allowed to support the ion exchange resin, thereby reducing the probability of deformation of the ion exchange resin. The design that the lower shell is arranged inside the upper shell makes it possible to support the ion exchange resin by the top of the lower shell, and also reduces the deformation of the ion exchange resin. The upper opening of the lower shell can be provided with inwardly extending support legs arranged at equal intervals to form a ring shape, and gaps are arranged between adjacent two support legs, so as to support the ion exchange resin by the support legs, and also reduce the deformation of the ion exchange resin. A sleeve can also be arranged, the outer side wall of the sleeve is provided with external threads, and the sleeve is threadedly connected to the upper shell. The top of the sleeve is provided with inwardly extending support frames arranged at equal intervals to form a ring shape, and gaps are arranged between adjacent two support frames, so as to support the ion exchange resin by the support frames. Alternatively, support rods 9 are arranged in the upper shell, the support rods 9 are located at the top of the threads, the support rods 9 are arranged at equal intervals to form a ring shape, and gaps are arranged between adjacent two support rods 9, so as to support the ion exchange resin by the support rods 9. The inner side wall of the sleeve is provided with internal threads. Thus, the lower shell is threadedly connected to the sleeve, so as to select lower shells of different sizes by selecting different sleeves. At this time, the water drain hole 8 is opened in the lower shell.

[0027] Specific Embodiment 3

[0028] The drinking water filter cartridge with arsenic removal resin can further comprise a coconut shell activated carbon layer. The coconut shell activated carbon layer can improve the taste of filtered water, making the water pure and sweet. The coconut shell activated carbon layer is located below the ultrafiltration membrane 6.

[0029] The drinking water filter cartridge with arsenic removal resin can further comprise a barrel-shaped shell. In specific embodiment 1, the shell is detachably connected below the outer shell. In specific embodiment 2, the shell is detachably connected below the lower shell. The coconut shell activated carbon layer can be in a layer shape and located in the shell. The shell can also be directly pressed from the coconut shell activated carbon layer. The shell is preferably detachably connected to the outer shell or the lower shell by threads. The bottom of the shell is provided with a water drain hole. The shell is screwed below the ultrafiltration membrane 6 by threads. Tea powder, coffee powder, etc. can be added in the shell to improve the taste of water.

[0030] The basic principle and main characteristics of the utility model and the advantages of the utility model are shown and described above. The skilled in the art should understand that the utility model is not limited by the above examples, and the above examples and the description in the specification are only to illustrate the principle of the utility model, and various changes and improvements of the utility model can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed.

Claims

1. A drinking water filter cartridge having arsenic removing resin, characterized by, The filter screen, the first PP cotton layer, the activated carbon layer, the second PP cotton layer, the arsenic removal resin layer and the ultrafiltration membrane are sequentially arranged from top to bottom.

2. The drinking water filter cartridge having arsenic removing resin according to claim 1, characterized by, The shell is further provided with a water inlet at the top and a water outlet at the bottom.

3. The drinking water filter cartridge having arsenic removing resin according to claim 1, characterized by, The shell further comprises an upper shell and a lower shell which are detachably connected.

4. The drinking water filter cartridge having arsenic removing resin according to claim 3, characterized by, The ion exchange resin layer is arranged between the arsenic removal resin layer and the ultrafiltration membrane.

5. The drinking water filter cartridge having arsenic removing resin according to claim 4, characterized by, The ion exchange resin layer is arranged in the upper shell.

6. The drinking water filter cartridge having arsenic removing resin according to claim 3, 4 or 5, characterized in that, The upper shell and the lower shell are detachably connected by threads.

7. The drinking water filter cartridge having arsenic removing resin according to claim 1, wherein, The upper shell and the lower shell are detachably connected by threads.

8. The drinking water filter cartridge having arsenic removing resin according to claim 1, wherein, The shell further comprises a coconut shell activated carbon layer arranged below the ultrafiltration membrane. The shell further comprises a barrel-shaped casing which is detachably connected to the lower part of the shell and is provided with a drain hole at the bottom.

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