Composite filter element capable of continuously releasing strontium
By designing primary filter components and secondary filter components in the filter element, and using reasonable filtration accuracy settings, the existing strontium-rich filter element is solved, which is easy to breed bacteria and blockage, achieving the safety of water production and the extension of the filter element life.
Patent Information
- Application Number
- CN202420671156.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-02
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-04-02
AI Technical Summary
The existing strontium-rich filter element is prone to breed bacteria, resulting in unqualified water production, and is easily blocked by large particles and has a short lifespan.
A composite filter element is designed, including a primary filter assembly and a secondary filter assembly. The primary filter element consists of a first filter unit and a strontium-rich carbon material. By reasonably setting the filtration accuracy, it is ensured that the water flow first filters the unit and then enters the strontium-rich carbon material to avoid bacterial growth and extend the life of the filter element.
It effectively avoids bacterial growth, ensures the safety of water production and the excellent water quality, and extends the service life of the filter element.
Smart Images
Figure CN222834005U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a filtering device, in particular to a filter element. Background Art
[0002] As people's living standards improve, the standards for drinking water are getting higher and higher. Drinking water is not only required to be non-toxic, harmless, and odorless, but also to contain certain minerals and trace elements, so as to ensure that people can drink directly and benefit their health. At present, most of the treatment of drinking water adopts reverse osmosis technology. This purified water does not contain minerals or trace elements required by the human body. Long-term drinking poses a health hazard to the human body. Drinking safe and healthy water is the right choice, that is, filtering out harmful substances in the water and retaining the minerals in the water. However, for some minerals that have been studied to be beneficial to the body, such as strontium, after investigation, the content in tap water is negligible (generally <0.1mg / L), which cannot meet the national standard for drinking natural mineral water for strontium content requirements (>0.2mg / L).
[0003] Therefore, a strontium-rich filter element has appeared on the market, which can slowly release strontium to supplement the human body's needs. However, this filter element is generally prepared by compounding with carbon materials. The presence of carbon materials makes it easy to breed bacteria, causing secondary pollution to the produced water, and the total number of bacterial colonies in the effluent water quality is difficult to meet national standards.
[0004] At the same time, this type of filter element is easily clogged by large particles of impurities in the water, resulting in a relatively short lifespan. Utility Model Content
[0005] The main technical problem to be solved by the utility model is to provide a composite filter element which can continuously release strontium, thereby increasing the service life of the filter element and ensuring that the total number of bacterial colonies in produced water is qualified.
[0006] In order to solve the above technical problems, the utility model provides a composite filter element capable of continuously releasing strontium, comprising a housing, a water outlet joint arranged at the upper end of the housing, and a primary filter assembly and a secondary filter assembly arranged from bottom to top along the height direction of the housing;
[0007] A portion of the water outlet joint is placed in the housing, and another portion is exposed outside the end surface of the upper end of the housing; a first water inlet channel is formed between the inner wall of the housing and the water outlet joint;
[0008] The primary filter assembly includes a first filter unit and a strontium-rich carbon material arranged along the water flow direction;
[0009] The filtering accuracy of the first filter unit is lower than the filtering accuracy of the secondary filter assembly.
[0010] In a preferred embodiment: the side of the primary filter component is the water inlet surface, the middle of the primary filter component is the first water outlet channel; the first filter unit is wrapped on the side of the strontium-rich carbon material.
[0011] In a preferred embodiment: the first filter unit is PP cotton or PP origami or activated carbon or a combination of PP cotton and activated carbon or a combination of PP origami and activated carbon.
[0012] In a preferred embodiment: when the first filter unit is a combination of PP cotton and activated carbon or a combination of PP origami and activated carbon, the filtration accuracy of the activated carbon is higher than the filtration accuracy of PP cotton or PP origami, and lower than the filtration accuracy of strontium-rich carbon material.
[0013] In a preferred embodiment: the primary filter assembly also includes an upper cover plate; the upper cover plate surrounds a space in the water outlet joint to accommodate the secondary filter assembly, and forms a second water inlet channel between the inner wall of the secondary filter assembly and the water outlet joint, and the second water inlet channel is connected to the first water outlet channel of the primary filter assembly through the upper cover plate.
[0014] In a preferred embodiment: a sealing ring is provided between the upper cover plate and the water outlet joint to isolate the first water inlet channel from the second water inlet channel.
[0015] In a preferred embodiment: the secondary filtration component is an ultrafiltration membrane filter element or a charge filter element.
[0016] In a preferred embodiment: the filtering accuracy of the first filter unit is 5-10 microns; the filtering accuracy of the strontium-rich carbon filter material is 2-5 microns; the filtering accuracy of the ultrafiltration membrane filter element is 0.001-0.1 microns, and the filtering accuracy of the charge filter element is 0.5-1 microns.
[0017] In a preferred embodiment: the secondary filter assembly includes a fixing member, a guide channel is formed between the fixing member and the upper cover plate, and the first water outlet channel of the primary filter assembly is connected to the second water inlet channel through the guide channel.
[0018] In a preferred embodiment: the upper cover plate includes a top surface, the fixing member includes a bottom surface, the top surface of the upper cover plate and the bottom surface of the fixing member form the diversion channel, the top surface of the upper cover plate extends downward with a hollow boss, and the boss extends into the first water outlet channel of the primary filter component to divert the water flow in the primary filter component to the second water inlet channel.
[0019] Compared with the prior art, the technical solution of the utility model has the following beneficial effects:
[0020] The utility model provides a composite filter element capable of sustainably releasing strontium. By setting a strontium-rich carbon material in the first filter unit, the water flow first passes through the first filter unit to filter out large particles of impurities before entering the strontium-rich carbon material. By reasonably setting the filtering accuracy of the first filter unit and the strontium-rich carbon material, the first filter unit can be mainly responsible for filtering large particles of impurities, and small particles of impurities are filtered by the strontium-rich carbon material, while the residual chlorine and organic matter in the water are filtered at the same time, so that the life distribution of the overall filter element is more balanced. In addition, the first filter unit is not prone to rapid clogging due to too high filtering accuracy. The first filter unit and the strontium-rich carbon material can also provide protection for the secondary filter assembly at the rear end to prevent large particles of impurities from entering the secondary filter assembly and causing congestion in the secondary filter assembly. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 An exploded view of a preferred embodiment of the utility model;
[0022] Figure 2 It is a sectional exploded view of a preferred embodiment of the utility model;
[0023] Figure 3 This is a sectional waterway diagram of a preferred embodiment of the utility model. DETAILED DESCRIPTION
[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.
[0025] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships described in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.
[0026] In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "provided with", "installed / connected", "connected", 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 or an electrical connection. It can be a direct connection or an indirect connection through an intermediate medium. It can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.
[0027] refer to Figure 1-Figure 3 This embodiment provides a composite filter element capable of continuously releasing strontium, comprising a housing 1, a water outlet joint 2 arranged at the upper end of the housing 1, and a primary filter assembly 3 and a secondary filter assembly 4 arranged from bottom to top along the height direction of the housing 1; the primary filter assembly 3 comprises a first filter unit 31 and a strontium-rich carbon material 32 arranged along the water flow direction. In addition, the first filter unit 31 is wrapped around the side of the strontium-rich carbon material 32, so that the side of the primary filter assembly 3 is a water inlet surface, and the middle of the primary filter assembly 3 is a first water outlet channel 33.
[0028] By arranging the primary filter assembly 3 and the secondary filter assembly 4 up and down, the common structure of the multi-stage filter element nesting arrangement in the past is changed. The internal structure of the filter element is simpler, the use of plastic structural parts is reduced, and the possibility of water production being contaminated by organic matter precipitated from plastic parts can be better avoided, thus saving costs.
[0029] Furthermore, by placing the secondary filter component 4 for intercepting bacteria at the rear, the bacteria grown by the front primary filter component 3, especially the strontium-rich carbon material 32, can be effectively intercepted, thereby better ensuring the safety of water production without affecting the taste of the final purified water.
[0030] A portion of the water outlet joint 2 is placed in the outer shell 1, and the other portion is exposed outside the end surface of the upper end of the outer shell 1; a first water inlet channel 11 is formed between the inner wall of the outer shell 1 and the water outlet joint 2; the raw water flows downward along the height direction of the filter element through the first water inlet channel 11, and then flows inward along the radial direction of the filter element, passes through the first filter unit 31 and the strontium-rich carbon material 32 in turn, and then flows into the secondary filter component 4.
[0031] In order to better protect the secondary filter assembly 4 and extend the life of the primary filter assembly 3, the filtering accuracy of the first filter unit 31 is lower than the filtering accuracy of the strontium-rich carbon material 32, and the filtering accuracy of the strontium-rich carbon material 32 is lower than the filtering accuracy of the secondary filter assembly 4. Since the strontium-rich carbon rod 32 is arranged in the first filter unit 31, the water flow first passes through the first filter unit 31 to filter out large particles of impurities before entering the strontium-rich carbon material 32. Therefore, by reasonably setting the filtering accuracy of the first filter unit 31 and the strontium-rich carbon material 32, the first filter unit 31 can be mainly responsible for filtering large particles of impurities, and small particles of impurities are handed over to the strontium-rich carbon material 32 for filtering, so that the life distribution of the overall filter element is more balanced. And the first filter unit 31 is not easy to cause rapid clogging due to too high filtering accuracy. The first filter unit 31 and the strontium-rich carbon material 32 can also provide protection for the secondary filter assembly 4 at the rear end to prevent large particles of impurities from entering the secondary filter assembly 4 and causing congestion of the secondary filter assembly 4.
[0032] Specifically, in this embodiment, the filtration accuracy of the first filter unit 31 is 5-10 microns; the filtration accuracy of the strontium-rich carbon rod 32 is 2-5 microns; the secondary filter component 4 is an ultrafiltration membrane or a charge filter element, wherein the filtration accuracy of the ultrafiltration membrane is 0.001 microns-0.1 microns, and the filtration accuracy of the charge filter element is 0.5-1 microns.
[0033] The first filter unit 31 can be made of PP cotton or PP origami. In addition, a layer of activated carbon with a filtration accuracy between the PP cotton and the strontium-rich carbon material 32 can be added to improve the removal rate of organic matter. Of course, the PP cotton or PP origami can also be directly replaced with activated carbon with the same filtration accuracy as the PP cotton or PP origami, and the secondary filter component 4 is an ultrafiltration membrane filter element or a charge filter element.
[0034] In order to realize the upper and lower installation of the primary filter assembly 3 and the secondary filter assembly 4, the upper end surface of the primary filter assembly 3 is connected to the water outlet joint 2 through an upper cover plate 5, a space for accommodating the secondary filter assembly 4 is surrounded in the water outlet joint 2, and a second water inlet flow channel 12 is formed between the inner wall of the secondary filter assembly 4 and the water outlet joint 2, and the second water inlet flow channel 12 is connected to the first water outlet flow channel 33 of the primary filter assembly 3 through the upper cover plate 5. Specifically, a water outlet 52 is provided on the upper cover plate 5 at a position corresponding to the water outlet surface of the primary filter assembly 3, which is used to connect the second water inlet flow channel 12 and the water outlet surface of the primary filter assembly 3. Furthermore, the inner wall 521 of the water outlet of the upper cover plate 5 extends into the water outlet surface of the primary filter assembly 3, so that the water outlet of the primary filter assembly 3 can be guided to prevent it from flowing out from other positions of the strontium-rich carbon material 32. The parts 53 of the upper cover plate 5 on both sides of the water outlet can also abut against the end surface of the strontium-rich carbon material 32 to prevent water from penetrating from the end surface of the strontium-rich carbon material 32, ensuring that after passing through the strontium-rich carbon material 32, the water can only flow radially inward into the flow channel of the axis of the strontium-rich carbon material 32, and then flow out from the water outlet surface of the upper end surface of the strontium-rich carbon material 32.
[0035] The secondary filter assembly 4 includes a fixing member 41 , and a guide channel 13 is formed between the fixing member 41 and the upper cover plate 5 . The first water outlet channel 33 of the primary filter assembly 3 is connected to the second water inlet channel 12 through the guide channel 13 .
[0036] The upper cover plate 5 includes a top surface 54, and an "L"-shaped peripheral wall 55 extends downward from the outer periphery of the top surface 54. The fixing member 41 includes a bottom surface 411. The top surface 54 of the upper cover plate and the bottom surface 411 of the fixing member 41 form the guide channel 13. A hollow boss 56 extends downward from the middle of the top surface of the upper cover plate, and the boss 56 extends into the first water outlet channel 33 of the primary filter assembly to guide the water flow in the primary filter assembly to the second water inlet channel 12 through the guide channel 13.
[0037] In order to prevent the first water inlet flow channel 11 and the second water inlet flow channel 12 from flowing into each other, that is, the water in the first water inlet flow channel 11 flows into the second water inlet flow channel 12, the water outlet joint 2 is a cylindrical structure with a small top and a large bottom, and a through hole in the center to form the second water outlet flow channel 14, and the cylindrical structure of the water outlet joint 2 has a lower peripheral wall 21. The lower peripheral wall 21 of the water outlet joint extends into the peripheral wall 55, and a sealing ring 51 is provided between the peripheral wall 55 of the upper cover plate 5 and the lower peripheral wall 21 of the water outlet joint 2 to isolate the first water inlet flow channel 11 and the second water inlet flow channel 12.
[0038] The above is only a preferred specific implementation method of the utility model, but the design concept of the utility model is not limited to this. Any technician familiar with the technical field who uses this concept to make non-substantial changes to the utility model within the technical scope disclosed by the utility model shall be deemed to infringe the protection scope of the utility model.
Claims
1. A composite filter element capable of continuously releasing strontium, characterized in that It comprises a housing, a water outlet joint arranged at the upper end of the housing, and a primary filter assembly and a secondary filter assembly arranged from bottom to top along the height direction of the housing; A portion of the water outlet joint is placed in the housing, and another portion is exposed outside the end surface of the upper end of the housing; a first water inlet channel is formed between the inner wall of the housing and the water outlet joint; The primary filter assembly includes a first filter unit and a strontium-rich carbon material arranged along the water flow direction; The filtering accuracy of the first filter unit is lower than the filtering accuracy of the secondary filter assembly.
2. A composite filter element capable of continuously releasing strontium according to claim 1, characterized in that: The side surface of the primary filter component is the water inlet surface, and the middle of the primary filter component is the first water outlet channel; the first filter unit is wrapped on the side surface of the strontium-rich carbon material.
3. A composite filter element capable of continuously releasing strontium according to claim 1, characterized in that: The first filtering unit is PP cotton or PP origami or activated carbon or a combination of PP cotton and activated carbon or a combination of PP origami and activated carbon.
4. A composite filter element capable of continuously releasing strontium according to claim 3, characterized in that: When the first filtering unit is a combination of PP cotton and activated carbon or a combination of PP origami and activated carbon, the filtering accuracy of the activated carbon is higher than the filtering accuracy of PP cotton or PP origami, and lower than the filtering accuracy of strontium-rich carbon material.
5. The composite filter element capable of continuously releasing strontium according to claim 1, characterized in that: The primary filter assembly also includes an upper cover plate; the upper cover plate surrounds a space in the water outlet joint to accommodate the secondary filter assembly, and forms a second water inlet channel between the inner wall of the secondary filter assembly and the water outlet joint, and the second water inlet channel is connected to the first water outlet channel of the primary filter assembly through the upper cover plate.
6. A composite filter element capable of continuously releasing strontium according to claim 5, characterized in that: A sealing ring is provided between the upper cover plate and the water outlet joint to isolate the first water inlet flow channel from the second water inlet flow channel.
7. The composite filter element capable of continuously releasing strontium according to claim 1, characterized in that: The secondary filtration component is an ultrafiltration membrane filter element or a charge filter element.
8. A composite filter element capable of continuously releasing strontium according to claim 7, characterized in that: The filtering accuracy of the first filter unit is 5-10 microns; the filtering accuracy of the strontium-rich carbon filter material is 2-5 microns; the filtering accuracy of the ultrafiltration membrane filter element is 0.001-0.1 microns, and the filtering accuracy of the charge filter element is 0.5-1 microns.
9. The composite filter element capable of continuously releasing strontium according to claim 5, characterized in that: The secondary filter assembly includes a fixing member, and a guide channel is formed between the fixing member and the upper cover plate. The first water outlet channel of the primary filter assembly is connected to the second water inlet channel through the guide channel.
10. A composite filter element capable of continuously releasing strontium according to claim 9, characterized in that: The upper cover plate includes a top surface, and the fixing member includes a bottom surface. The top surface of the upper cover plate and the bottom surface of the fixing member form the diversion channel. The top surface of the upper cover plate extends downward with a hollow boss, and the boss extends into the first water outlet channel of the primary filter component to divert the water flow in the primary filter component to the second water inlet channel.