Soft water filter element

Abstract

The utility model provides a water softening filter element. The water softening filter element comprises a shell, a softening assembly and a filtering assembly, wherein the softening assembly and the filtering assembly are arranged up and down in the height direction of the shell; a water outlet head is arranged at the top of the shell, a purified water outlet is formed in the water outlet head, a raw water inlet is formed in the periphery of the purified water outlet, and a raw water runner is formed among the inner wall of the shell, the softening assembly and the filtering assembly; a first purified water flow channel is arranged in the filtering assembly, and the softening assembly is provided with a second purified water flow channel and filling resin which are respectively communicated with the first purified water flow channel, so that part of purified water in the first purified water flow channel directly flows out through the second purified water flow channel; and the other part is softened by filling resin and then mixed with the purified water flowing out of the second purified water flow channel to flow out from the purified water outlet.

Description

Technical Field

[0001] The utility model relates to the field of water purification, in particular to a soft water filter element. Background Art

[0002] The filter media of the current soft water filter element is relatively single, which can only soften water and cannot achieve a good water purification effect. Moreover, the softening effect of the water quality drops rapidly with the increase of the use time. Generally, there is no softening effect after softening 300L of water, and the service life is very short.

[0003] The reason for the above situation is that the main filter media of the current soft water filter element is ion exchange resin, and there is no relatively perfect filter media to protect the resin from pollution. Therefore, it is prone to biological pollution, organic pollution and oxidation pollution, which in turn affects the service life.

[0004] Residual chlorine in tap water is the main cause of resin oxidation. The oxidized resin becomes brittle and easy to break. At the same time, its exchange capacity decreases, further shortening the service life. The permanganate index in tap water is generally 1-3mg / L, indicating that it contains a certain amount of organic matter. Long-term use will cause organic pollution of the resin and affect its exchange capacity. The waterworks will treat microorganisms in the water, such as bacteria, but it is inevitable that there will be residues entering the terminal tap water and breeding after entering the filter element. Especially, the carbon material in the filter element provides an organic carbon source and space for bacteria breeding. Therefore, it will cause microbial pollution of the resin, affect the resin life, and lead to unqualified total colony count of the produced water. Summary of the Utility Model

[0005] The main technical problem to be solved by the utility model is to provide a soft water filter element to effectively improve the service life of the soft water filter element.

[0006] To solve the above technical problems, the utility model provides a soft water filter element, including: a housing, a softening component and a filtering component arranged up and down along the height direction of the housing;

[0007] The top of the housing is provided with a water outlet head, and the water outlet head is provided with a purified water outlet. The outer periphery of the purified water outlet is provided with a raw water inlet. A raw water flow channel is formed between the inner wall of the housing and the softening component and the filtering component;

[0008] A first purified water flow channel is arranged in the filtering component. The softening component is provided with a second purified water flow channel and filled resin respectively communicating with the first purified water flow channel, so that a part of the purified water in the first purified water flow channel directly flows out through the second purified water flow channel, and the other part is softened by the filled resin and mixed with the purified water flowing out of the second purified water flow channel and flows out from the purified water outlet.

[0009] In a preferred embodiment: the first purified water flow channel is arranged along the axis of the filtering component.

[0010] In a preferred embodiment: the filtering assembly includes a primary filtering assembly and a secondary filtering assembly; the primary filtering assembly is arranged upstream of the secondary filtering assembly along the water flow direction.

[0011] In a preferred embodiment: the filtering assembly is sequentially divided into PP cotton or origami, activated carbon fiber layer, antibacterial activated carbon layer, and melt-blown PP cotton from outside to inside along the radial direction.

[0012] In a preferred embodiment: the softening assembly includes a bracket, the bracket is provided with the second purified water flow channel in the axial direction, and a chamber for accommodating the filling resin is formed on the outer periphery of the second purified water flow channel.

[0013] In a preferred embodiment: the bracket further includes an insertion part inserted into the first purified water flow channel, the inner diameter of the insertion part is larger than the outer diameter of the second purified water flow channel, so that while the insertion part communicates with the second purified water flow channel, the chamber is also communicated through the gap between the outer side wall of the second purified water flow channel and the inner wall of the insertion part.

[0014] In a preferred embodiment: a rectifying filter screen is arranged in the insertion part, and the rectifying filter screen is integrally formed or formed by encapsulation with the insertion part.

[0015] In a preferred embodiment: the softening assembly further includes an end cap, the end cap is arranged upstream of the bracket along the water flow direction; the end cap has a mixing water outlet communicating with the purified water outlet; the mixing water outlet communicates with the second purified water flow channel and the chamber at the same time.

[0016] In a preferred embodiment: a part of the end cap is inserted into the water outlet head and is hermetically connected to the inner wall of the water outlet head, so that the mixing water outlet only communicates with the purified water outlet.

[0017] In a preferred embodiment: the ratio of the amount of water flowing into the filling resin to the amount of water flowing into the second purified water flow channel is 1:2 - 1:1.

[0018] Compared with the prior art, the technical solution of the present utility model has the following beneficial effects:

[0019] 1. The present utility model provides a soft water filter element, and a filtering assembly is arranged upstream of the softening assembly, thereby removing large particle impurities, residual chlorine, and part of organic matters in tap water, preventing these substances from flowing into the filling resin to cause resin pollution, and thus avoiding the influence on the softening efficiency of the resin.

[0020] 2. The present utility model provides a soft water filter element. Only a part of the purified water passing through the filtering component is softened by the resin, and the other part flows out directly. In this way, within the service life of the filter element, the hardness removal rate can be kept at a moderate level not lower than 30%, ensuring that no scale will form when boiling water. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is an exploded view of the filter element in the first preferred embodiment of the present utility model;

[0022] Figure 2 It is a water flow diagram of the filter element in the first preferred embodiment of the present utility model;

[0023] Figure 3 It is a water flow diagram of the filter element in the second preferred embodiment of the present utility model;

[0024] Figure 4 It is an exploded view of the filter element in the second preferred embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0026] In the description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, terms such as "installation", "provided with", "sheathed / connected", "connection", etc. should be understood in a broad sense. For example, "connection" can be a wall-mounted connection, a detachable connection, or an integral connection, it can be a mechanical connection, an electrical connection, a direct connection, or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0027] Refer to Figure 1 and Figure 2 , this embodiment provides a soft water filter element, including: a housing 1, a softening component 2 and a filtering component 3 arranged up and down along the height direction of the housing 1;

[0028] A water outlet head 11 is arranged at the top of the housing 1. A purified water outlet 12 is arranged on the water outlet head 11. A raw water inlet 13 is arranged on the outer periphery of the purified water outlet 12. A raw water flow channel 14 is formed between the inner wall of the housing 1 and the softening component 2 and the filtering component 3;

[0029] A first clean water flow channel 31 is arranged inside the filtering component 3, and the softening component 2 is provided with a second clean water flow channel 21 and a filling resin 22 which are respectively communicated with the first clean water flow channel 31, so that a part of the clean water in the first clean water flow channel 31 directly flows out through the second clean water flow channel 21, and another part is softened by the filling resin 22 and then mixed with the clean water flowing out of the second clean water flow channel 21 and flows out from the clean water outlet 12.

[0030] For the above-mentioned soft water filter element, a filtering component 3 is arranged upstream of the softening component 2, so as to remove large particle impurities, residual chlorine and some organic matters in tap water, prevent these substances from flowing into the filling resin 22 and causing resin pollution, and thus avoid affecting the softening efficiency of the resin. And only a part of the clean water passing through the filtering component 3 is softened by the resin, and the other part directly flows out. In this way, within the service life of the filter element, the hardness removal rate can be kept moderate and not less than 30%, ensuring that the water will not scale when boiling.

[0031] In this embodiment, since the raw water flow channel 14 is arranged outside the side wall of the filtering component 3, in order to enable the raw water to pass through the filtering component 3 for filtration, the first clean water flow channel 31 needs to be arranged along the axial direction of the filtering component 3. Moreover, in order to improve the filtering effect of the filtering component 3 and achieve the removal of most large particle impurities, residual chlorine and some organic matters, the filtering component 3 includes a primary filtering component and a secondary filtering component; the primary filtering component is arranged upstream of the secondary filtering component along the water flow direction. Further, the filtering component 3 is sequentially divided into a PP cotton or folded paper 32, an activated carbon fiber layer 33, an antibacterial activated carbon layer 34 and a melt-blown PP cotton 35 from outside to inside in the radial direction. The PP cotton or folded paper 32 plus the activated carbon fiber layer 33 are used as the primary filtration, which can remove large particle impurities such as sediment and rust, and also has the effect of removing residual chlorine and adsorbing organic matters in water. The antibacterial activated carbon layer 34 plus the melt-blown PP cotton 35 are used as the secondary filtration, further adsorbing organic matters; intercepting and inhibiting the growth of bacteria, and intercepting "black water".

[0032] Specifically, the filtering accuracy of the antibacterial activated carbon layer 34 is ≤ 0.5 microns, which can efficiently intercept the bacteria bred by the primary filter element and achieve the purpose of inhibiting the growth of bacteria by adding a silver-loaded antibacterial component. It can well protect the rear-end ion exchange resin from biological pollution; the melt-blown PP cotton 35 located inside the antibacterial activated carbon rod can intercept the "black water" generated by the activated carbon fiber and the activated carbon rod, ensure that the ion exchange resin is not polluted, and at the same time avoid filter element congestion.

[0033] The clean water formed after passing through the primary filtering component and the secondary filtering component is divided into two water channels, one part enters the filling resin 22, and the other part directly flows into the second clean water flow channel 21. The water volume ratio between the two is between 1:2 and 1:1, ensuring the service life of the resin, thus ensuring that the water will not scale when boiling within the service life of the filter element, and further protecting the heating tank.

[0034] To install the filling resin 22, the softening component 2 includes a bracket 23. The bracket 23 axially arranges the second clean water flow channel 21, and a chamber for accommodating the filling resin 22 is formed on the outer periphery of the second clean water flow channel 21. To enable the water flowing out from the first clean water flow channel 31 to flow into the second clean water flow channel 21 and the chamber simultaneously, the bracket 23 further includes an insertion part 231 inserted into the first clean water flow channel 31. The inner diameter of the insertion part 231 is larger than the outer diameter of the second clean water flow channel 21, so that while the insertion part 231 communicates with the second clean water flow channel 21, the chamber is also communicated through the gap 233 between the outer side wall of the second clean water flow channel 21 and the inner wall of the insertion part 231.

[0035] A rectifying filter screen 232 is further arranged in the insertion part 231 in this embodiment. The rectifying filter screen 232 is integrally formed or formed by encapsulating rubber with the insertion part 231. A plurality of water inlet small holes are evenly distributed on the surface of the rectifying filter screen 232, and the clean water in the first clean water flow channel 31 slowly and evenly enters the second clean water flow channel 21 and the chamber after being rectified through the water inlet small holes.

[0036] Moreover, to achieve the mixing of the clean water and the softened clean water, the softening component 2 further includes an end cover 24. The end cover 24 is arranged upstream of the bracket 23 along the water flow direction; the end cover 24 has a mixing water outlet 241 communicating with the clean water outlet 12; the mixing water outlet 241 communicates with the second clean water flow channel 21 and the chamber simultaneously. In this way, the water flowing out from the second clean water flow channel 21 and the chamber will be mixed in the mixing water outlet 241 and then flow out.

[0037] Moreover, to ensure that the raw water in the raw water flow channel 14 does not directly flow out from the water outlet, a part of the end cover 24 is inserted into the water outlet head 11, and a sealing connection is realized with the inner wall of the water outlet head 11 through a sealing ring 242, so that the mixing water outlet only communicates with the clean water outlet 12. In this way, it can be ensured that the raw water can only flow into the first clean water flow channel 31 from the raw water flow channel 14, and water cross-flow will not occur.

[0038] Embodiment 2

[0039] Reference Figure 3 and 4 In this embodiment, the difference from Embodiment 1 is that the filter component 3 is successively divided into a PP cotton or origami 36 and a carbon rod 37 from outside to inside along the radial direction. The rest is the same as that in Embodiment 1 and will not be described in detail.

[0040] The above is only the preferred specific implementation manners of the present invention, and does not limit the patent scope of the present invention. All technical equivalent transformations made by using the content of the specification of the present invention belong to the protection scope of the present invention.

Claims

1. A soft water filter element, characterized in that Comprising: A housing, a softening component and a filtering component arranged vertically along the height direction of the housing; A water outlet head is provided at the top of the housing, a purified water outlet is provided on the water outlet head, a raw water inlet is provided on the outer periphery of the purified water outlet, and a raw water flow channel is formed between the inner wall of the housing and the softening component and the filtering component; A first purified water flow channel is arranged in the filtering component, and the softening component is provided with a second purified water flow channel and filled resin respectively communicating with the first purified water flow channel, so that a part of the purified water in the first purified water flow channel flows out directly through the second purified water flow channel, and the other part is softened by the filled resin and mixed with the purified water flowing out of the second purified water flow channel and flows out from the purified water outlet.

2. The soft water filter element according to claim 1, wherein: The first purified water flow channel is arranged along the axial direction of the filtering component.

3. The soft water filter element according to claim 1, characterized in that: The filtering component includes a primary filtering component and a secondary filtering component; the primary filtering component is arranged upstream of the secondary filtering component along the water flow direction.

4. The soft water filter element according to claim 3, characterized in that: The filtering component is sequentially divided into a PP cotton or origami, an activated carbon fiber layer, an antibacterial activated carbon layer and a melt-blown PP cotton from outside to inside in the radial direction.

5. A soft water filter element according to claim 1, characterized in that: The softening component includes a bracket, the bracket is provided with the second purified water flow channel in the axial direction, and a chamber for accommodating the filled resin is formed outside the second purified water flow channel.

6. The soft water filter element according to claim 5, characterized in that: The bracket further includes an insertion part inserted into the first purified water flow channel, and the inner diameter of the insertion part is larger than the outer diameter of the second purified water flow channel, so that while the insertion part communicates with the second purified water flow channel, the chamber is also communicated through the gap between the outer side wall of the second purified water flow channel and the inner wall of the insertion part.

7. The soft water filter element according to claim 6, characterized in that: A rectifying filter screen is arranged in the insertion part, and the rectifying filter screen is integrally formed or formed by encapsulation with the insertion part.

8. A soft water filter element according to claim 5, characterized in that: The softening component further includes an end cover, and the end cover is arranged upstream of the bracket along the water flow direction; the end cover has a mixed water outlet communicating with the purified water outlet; the mixed water outlet communicates with the second purified water flow channel and the chamber at the same time.

9. A soft water filter element according to claim 8, characterized in that: A part of the end cover is inserted into the water outlet head and is hermetically connected to the inner wall of the water outlet head, so that the mixed water outlet only communicates with the purified water outlet.

10. A soft water filter element according to any one of claims 1-9, characterized in that: The ratio of the amount of water flowing into the filled resin to the amount of water flowing into the second purified water flow channel is 1:2 - 1:1.

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