Filter element, design method, preparation method, filter cartridge, waterway system and mineralization water purifier

Abstract

The invention is suitable for the technical field of mineralized water purification, and discloses a filter element, a design and preparation method thereof, a filter cartridge, a waterway system and a mineralized water purifier. The filter element comprises a first alkaline filter material (strong base) and a second alkaline filter material (weak base), the alkalinity of the first alkaline filter material is higher than that of the second alkaline filter material, the second alkaline filter material is inhibited from dissolving out alkaline substances in the environment that the pH value of the water body is higher than the set pH value, and the pH value of the water body is higher than the set pH value when the first alkaline filter material dissolves out the alkaline substances in the early stage. The pH value of the water body is lower than a set pH value when the first alkaline filter material dissolves out alkaline substances in the later stage. The first alkaline filter material preferentially dissolves out alkaline substances, dissolution of alkaline substances in the second alkaline filter material can be inhibited, the second alkaline filter material gradually and slowly releases alkaline substances in the middle and later periods, long-acting alkaline water meeting the PH standard range is provided for a user, the high-end requirement of the user for drinking water can be met, and the service life of the filter element is long.

Description

Technical Field

[0001] The present application relates to the field of mineralized filtration technology, and in particular to a filter element and its design, preparation method, filter cartridge, water system and mineralized water purifier. Background Art

[0002] With the development of society, people's living standards are improving day by day. People eat more meat in their lives, which makes many people's food tend to be weakly acidic. In addition, the fast pace of life and staying up all night have become the norm for young people. In recent years, environmental problems have become more prominent, urban people lack exercise and are affected by life pressure. Many people have acidic physiques, which may lead to a series of sub-health risks.

[0003] Currently, most alkaline filter elements on the market use weakly alkaline filter materials. After a period of use, the alkalinity decreases, while tap water is mostly weakly acidic. The weakly alkaline filter material has insufficient ability to alkalize water quality and cannot alkalize the water body according to design requirements. The service life of the filter element is short, and the filter element needs to be replaced frequently. The application cost is also high, and the user experience is relatively poor. Summary of the invention

[0004] The present invention provides a filter element and its design, preparation method, filter cartridge, water system and mineralized water purifier. The filter element can perform long-term alkalization on water bodies, so that the pH value of the alkaline water quality can reach the design standard within the entire life cycle, without the need for frequent replacement of the filter element, with low application cost, and can continuously provide alkaline water that meets the standards, thereby helping to meet users' high-end needs for drinking water and providing a good user experience.

[0005] The present invention provides a filter element design method, comprising the following steps:

[0006] Designing a first alkaline filter material and a second alkaline filter material, wherein the second alkaline filter material is designed to be inhibited from dissolving alkaline substances in an environment of water with a pH value higher than a set pH value;

[0007] The alkalinity of the first alkaline filter material is designed to be higher than that of the second alkaline filter material, the pH value of the water flowing through the first alkaline filter material in the early stage of the design is higher than the set pH value, and the pH value of the water flowing through the first alkaline filter material in the later stage of the design is lower than the set pH value;

[0008] The first alkaline filter material is designed to dissolve alkaline substances in the early stage and inhibit the second alkaline filter material from dissolving alkaline substances;

[0009] The first alkaline filter material and the second alkaline filter material are designed to dissolve alkaline substances in the middle and late stages respectively.

[0010] The present invention also provides a filter element, comprising a first alkaline filter material and a second alkaline filter material, the alkalinity of the first alkaline filter material is higher than that of the second alkaline filter material, the second alkaline filter material is inhibited from dissolving alkaline substances in an environment of water with a pH value higher than a set pH value, the pH value of the water body when the first alkaline filter material dissolves alkaline substances in the early stage is higher than the set pH value, and the pH value of the water body when the first alkaline filter material dissolves alkaline substances in the later stage is lower than the set pH value; the first alkaline filter material and the second alkaline filter material are in the same filter cavity, or the first alkaline filter material and the second alkaline filter material are arranged in different filter cavities and connected by a pipeline.

[0011] Optionally, the first alkaline filter material and the second alkaline filter material are mixed and formed into a filter body;

[0012] Alternatively, the first alkaline filter material and the second alkaline filter material are integrally formed into a filter body along a set direction;

[0013] Alternatively, the first alkaline filter material and the second alkaline filter material are formed separately and assembled along the setting direction to form a filter body;

[0014] Alternatively, the first alkaline filter material and the second alkaline filter material are arranged along a set direction of the filter body to form a filter body, so that the alkalinity of the filter body changes along the set direction.

[0015] Optionally, the first alkaline filter material and the second alkaline filter material are columnar or cylindrical, and the first alkaline filter material and the second alkaline filter material are integrally formed or separately formed along the axial direction and fixedly connected to form a filter body;

[0016] The first alkaline filter material and the second alkaline filter material are integrally formed inside and outside or separately formed and fixedly connected to form a filter body.

[0017] Optionally, among the first alkaline filter material and the second alkaline filter material, the mass proportion of the first alkaline filter material is 10%-50%, and the mass proportion of the second alkaline filter material is 50%-90%.

[0018] Optionally, the first alkaline filter material includes at least one of brucite, periclase, sepiolite, and magnesite;

[0019] The second alkaline filter material includes at least one of calcite, dolomite, stalactite, limestone, and Iceland spar.

[0020] Optionally, the first alkaline filter material is a carbon rod filter material, a carbon fiber filter material, a carbon particle filter material or a ceramic filter material as a carrier;

[0021] The second alkaline filter material is carried by carbon rod filter material, carbon fiber filter material, carbon particle filter material or ceramic filter material.

[0022] The present invention also provides a method for preparing a filter element, which is used to prepare the above-mentioned filter element, comprising the following steps:

[0023] Raw material acquisition step: respectively acquiring the raw materials of the first alkaline filter material and the second alkaline filter material;

[0024] Cleaning and drying step: cleaning and drying the raw materials of the first alkaline filter material and the second alkaline filter material;

[0025] Crushing step: crushing the raw materials of the first alkaline filter material and the second alkaline filter material to a set mesh size;

[0026] The impurity removal step is to remove impurities from the crushed first alkaline filter material and the second alkaline filter material to obtain raw material powder;

[0027] Forming step: the raw material powder after impurity removal treatment and the carrier powder are mixed according to a set mass ratio and then formed into a filter body.

[0028] Optionally, the crushed first alkaline filter material, the second alkaline filter material and the carrier powder are mixed together and formed into an integrated filter body;

[0029] Alternatively, the first alkaline filter material and carrier powder are mixed to form a first alkaline filter body; the second alkaline filter material and carrier powder are mixed to form a second alkaline filter body.

[0030] Optionally, the first alkaline filter and the second alkaline filter are integrally connected;

[0031] Alternatively, the first alkaline filter body and the second alkaline filter body are bonded or connected via a fixed structure.

[0032] The present invention further provides a filter cartridge, comprising a cartridge shell, wherein the above-mentioned filter element is arranged in the cartridge shell.

[0033] Optionally, a filter cavity for simultaneously accommodating the first alkaline filter material and the second alkaline filter material is provided in the cartridge shell;

[0034] Alternatively, a series water channel for sequentially flowing through the first alkaline filter material and the second alkaline filter material is provided in the cartridge shell.

[0035] Optionally, the first alkaline filter material and the second alkaline filter material are successively arranged in the cartridge shell along the water flow direction in the filter cartridge.

[0036] Optionally, a first compartment and a second compartment are provided in the filter cartridge, the first alkaline filter material is provided in the first compartment, and the second alkaline filter material is provided in the second compartment; the series waterway is connected in series with the first compartment and the second compartment.

[0037] The present invention also provides a water system, including an inlet pipe and an outlet pipe, wherein the filter element is arranged between the inlet pipe and the outlet pipe, and the first alkaline filter material and the second alkaline filter material are arranged in the water system along the direction from the inlet pipe to the outlet pipe.

[0038] Optionally, the waterway system includes a serial-parallel switching waterway, the serial-parallel switching waterway includes a first waterway and a second waterway in parallel, the first waterway and the second waterway are connected between the water inlet pipe and the water outlet pipe; the first waterway is provided with the first alkaline filter material, and the second waterway is provided with the second alkaline filter material;

[0039] The series-parallel switching water circuit includes a switching pipeline, one end of which is connected to the downstream of the first alkaline filter material, and the other end of which is connected to the upstream of the second alkaline filter material. The switching pipeline is provided with a switching control valve.

[0040] Optionally, the water channel system includes an alkaline water channel, one end of the alkaline water channel is connected to the water inlet pipe, the other end of the alkaline water channel is connected to the water outlet pipe, and the first alkaline filter material and the second alkaline filter material are connected to the alkaline water channel;

[0041] The water channel system further includes a non-alkaline water channel, which is arranged in parallel with the alkaline water channel, and two ends of the non-alkaline water channel are respectively connected to the water inlet pipe and the water outlet pipe.

[0042] Optionally, the first alkaline filter material and the second alkaline filter material are arranged in the same cartridge shell, or the first alkaline filter material and the second alkaline filter material are arranged in different cartridge shells.

[0043] The present invention also provides a mineral spring mineralized water purifier, comprising a housing, wherein the housing is provided with the above-mentioned filter element;

[0044] Alternatively, the housing is provided with a filter cartridge as described above;

[0045] Alternatively, the casing is provided with a water system as mentioned above.

[0046] Optionally, the mineral spring mineralized water purifier is provided with a sensor component for obtaining the pH value of the output water; the mineral spring mineralized water purifier is provided with a display component for displaying the pH value of the output water.

[0047] Optionally, the mineral spring mineralized water purifier has an alkaline water path flowing through the first alkaline filter material and the second alkaline filter material, and the mineral spring mineralized water purifier also has a non-alkaline water path, and the alkaline water path and the non-alkaline water path are connected to diversion control valves.

[0048] Optionally, according to the set pH value of the outlet water, the flow rate of the alkaline water channel and the flow rate of the non-alkaline water channel are controlled respectively, so that the pH value of the outlet water is the set pH value of the outlet water.

[0049] The present invention provides a filter element and its design, preparation method, filter cartridge, water system and mineralized water purifier. The inhibitory mechanism of strong alkaline materials on weak alkaline materials is used to design a long-lasting alkaline filter element. The first alkaline filter material (strong alkaline material) dissolves alkaline substances in the early stage and inhibits the second alkaline filter material (weak alkaline material) from dissolving alkaline substances; in the middle and late stages, the inhibitory effect of the first alkaline filter material (strong alkaline material) on the second alkaline filter material (weak alkaline material) is alleviated. The first alkaline filter material and the second alkaline filter material respectively dissolve alkaline substance filter elements in the middle and late stages, which can perform long-term alkalization of the water body. Within the overall life range of the filter element, the pH value of the alkaline water quality can reach the design standard. The filter element has a long life and does not need to be frequently replaced. It can provide alkaline water that meets the standards, which is conducive to meeting users' high-end needs for drinking water and provides a good user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 A pH value variation trend diagram when water flows through a first alkaline filter material and a second alkaline filter material simultaneously in a filter element design method provided by an embodiment of the present invention;

[0051] Figure 2 A pH value variation trend diagram of water flowing through a first alkaline filter material and a second alkaline filter material in a filter element design method provided in an embodiment of the present invention;

[0052] Figure 3 This is a schematic diagram of the principle of the first alkaline filter material and the second alkaline filter material being connected in series in the filter element provided by an embodiment of the present invention;

[0053] Figure 4 A three-dimensional cross-sectional schematic diagram of a first alkaline filter material and a second alkaline filter material in a filter cartridge provided by an embodiment of the present invention when they are arranged up and down;

[0054] Figure 5 A three-dimensional cross-sectional schematic diagram of the first alkaline filter material and the second alkaline filter material in the filter cartridge provided by an embodiment of the present invention when they are arranged inside and outside;

[0055] Figure 6 It is a three-dimensional cross-sectional schematic diagram of a filter cartridge provided by an embodiment of the present invention, in which a first alkaline filter material and a second alkaline filter material are arranged up and down and the first alkaline filter material is arranged in a filter housing;

[0056] Figure 7 A waterway diagram of one implementation of the waterway system provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0057] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0058] It should be noted that the terms “setting” and “connection” should be understood in a broad sense. For example, it can be directly setting or connecting, or it can be indirectly setting or connecting through a central component or a central structure.

[0059] In addition, in the embodiments of the present invention, if there are terms indicating orientation or positional relationships such as "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., they are based on the orientation or positional relationships or conventional placement states or usage states shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the structure, feature, device or element referred to must have a specific orientation or positional relationship, nor must it be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0060] The various specific technical features and embodiments described in the specific implementation methods can be combined in any suitable manner unless there is any contradiction. For example, different implementation methods can be formed by combining different specific technical features / embodiments. In order to avoid unnecessary repetition, the various possible combinations of the specific technical features / embodiments in the present invention will not be described separately.

[0061] An embodiment of the present invention provides a filter element design method for designing an alkaline filter element, comprising the following steps:

[0062] refer to Figure 3 and Figure 4 The first alkaline filter material 110 and the second alkaline filter material 120 are designed, and the second alkaline filter material 120 is designed to be inhibited from dissolving alkaline substances in an environment of water with a pH value higher than a set pH value, that is, when the second alkaline filter material 120 is in a water body with a pH value higher than a set pH value (strong alkalinity), it is inhibited from releasing (dissolving) alkaline substances.

[0063] The alkalinity of the first alkaline filter material 110 is designed to be higher than that of the second alkaline filter material 120. For ease of understanding, the first alkaline filter material 110 is defined as a strong alkaline filter material, and the second alkaline filter material 120 is defined as a weak alkaline filter material. The pH value of the water flowing through the first alkaline filter material 110 in the early stage is designed to be higher than the set pH value, and the pH value of the water flowing through the first alkaline filter material 110 in the later stage is designed to be lower than the set pH value. The first alkaline filter material 110 is designed to dissolve alkaline substances in the early stage and inhibit the second alkaline filter material 120 from dissolving alkaline substances; the first alkaline filter material 110 and the second alkaline filter material 120 are designed to dissolve alkaline substances in the middle and late stages respectively. That is, the first alkaline filter material 110 inhibits the dissolution of alkaline substances in the second alkaline filter material 120 in the early stage, and as the alkalinity of the first alkaline filter material 110 decreases in the later stage, the inhibition of the dissolution of alkaline substances in the second alkaline filter material 120 will be relieved, and the second alkaline filter material 120 can gradually dissolve alkaline substances.

[0064] Figure 1 The pH value change trend diagram of water (pure water) flowing through the first alkaline filter material 110 and the second alkaline filter material 120 in the same cavity shows that the strong alkaline water formed by the first alkaline filter material 110 (strong base) can meet the requirements of the alkaline water quality demand range in the early stage, but because of the rapid dissolution, it is difficult to meet the requirements of the alkaline water quality demand range (PH7.0 to PH 9.0) in the later stage. The weak alkaline material in the second alkaline filter material 120 (weak base) forms weak alkaline water. Since the weak alkaline material itself has a slow dissolution rate and poor alkalization ability, it cannot meet the requirements of the alkaline water quality demand range in the early stage. However, because the surface is gradually dissolved, the pores inside the weak alkaline material gradually become connected from closed, and the water flow can not only pass through the surface of the material, but also through the inside of the material, which increases the contact area between water molecules and weak alkaline materials and increases the dissolution rate. Therefore, the pH can meet the requirements of the alkaline water quality demand range in the later stage. The use of strong alkaline materials and weak alkaline materials alone has certain shortcomings and cannot take into account the requirements of the filter element life range. In the present embodiment, the first alkaline filter material 110 and the second alkaline filter material 120 are used in combination. When the filter element is in a non-water production period (immersion), the first alkaline filter material 110 and the second alkaline filter material 120 are immersed in water at the same time. When the alkaline ion concentration precipitated by the strong alkaline ore in the first alkaline filter material 110 is high, there is an inhibitory effect on the weak base in the second alkaline filter material 120, thereby slowing down the consumption of the ore and improving the overall mineralization life. Since the weak base can increase the release of porosity in an alkaline environment, the porosity of the weak base ore is relatively low in the early stage. Under the action of the weak base water regulated by the strong base, the internal porosity is gradually increased, thereby enhancing its alkalinization ability. As the porosity reaches a certain level, it enters a stable dissolution stage, and at this time, the dissolution ability of the strong base ore just decreases. The combination of the two can well meet the design purpose of the longevity of the filter element, and the pH value of the outlet water can be kept in the range of 7.0 to 9.0 throughout the life span.

[0065] Figure 2 It is a pH value variation trend diagram of water (pure water) flowing through another set of the first alkaline filter material 110 and the second alkaline filter material 120 . Figure 2 The first alkaline filter material 110 corresponds to strong alkaline mineral water, and the second alkaline filter material 120 corresponds to weak alkaline mineral water. The final mixed water is a water body in which strong alkaline mineral water and weak alkaline mineral water are mixed in equal proportions. In the early stage, the alkaline ions of the strong alkaline ore precipitate faster, exceeding the demand range, and the consumption rate is faster. The weak alkaline ore has weak precipitation ability in the early stage, which is lower than the demand range, but the consumption is slower and stable in the later stage. Therefore, a strong alkali and a weak alkali are combined in proportion, so that the strong alkali plays a leading role in the early stage of the water flow to adjust the water quality to the demand range. When the strong alkali is consumed to a certain extent in the later stage, the weak alkali slowly plays a role and dominates the water quality to adjust to a stable range. The first alkaline filter material 110 and the second alkaline filter material 120 can be arranged in the same chamber. During water production, the two water flows flow through the first alkaline filter material 110 and the second alkaline filter material 120 respectively. When it is not in the water production period (immersion), the soaking water is in an intercommunication state, and the strong alkali and weak alkali ores are soaked in the water at the same time. When the concentration of alkaline ions precipitated by the strong alkali ore is high, it has an inhibitory effect on the weak alkali, which can further slow down the consumption of the ore and increase the overall mineralization life. By matching the strong alkali of the fast-consumable product in the early stage with the weak alkali that is precipitated stably in the later stage, the required water quality can be provided stably throughout the service life of the filter element.

[0066] Through the above design scheme, in the early stage of the filter element, the first alkaline filter material 110 preferentially dissolves alkaline substances, making the pH value of the water body higher than the set pH value, thereby inhibiting the dissolution of alkaline substances in the second alkaline filter material 120, so that the second alkaline filter material 120 can maintain the ability to alkalize the water body. With the use of the filter element, the alkalinization ability of the first alkaline filter material 110 decreases, so that the pH value of the water body gradually decreases, and its inhibitory effect on the second alkaline filter body is gradually alleviated, so that the second alkaline filter body also gradually releases alkaline substances slowly. The first alkaline filter material 110 and the second alkaline filter material 120 can work together, so that the filter element can still alkalize the water body well in the middle and late stages of its life, so that the pH value of the water body remains within the standard range, providing users with long-term alkaline water that meets the pH standard range, which can meet users' high-end needs for drinking water, and the filter element has a long service life, and users do not need to frequently replace the filter element, and the user experience is good.

[0067] The present invention also provides a filter element, which can be designed by the above-mentioned design method. The filter element includes a first alkaline filter material 110 and a second alkaline filter material 120, the alkalinity of the first alkaline filter material 110 is higher than the alkalinity of the second alkaline filter material 120, the second alkaline filter material 120 is inhibited from dissolving alkaline substances in an environment of water with a pH value higher than the set pH value, the pH value of the water body when the first alkaline filter material 110 dissolves alkaline substances in the early stage is higher than the set pH value, and the pH value of the water body when the first alkaline filter material 110 dissolves alkaline substances in the later stage is lower than the set pH value; the first alkaline filter material 110 and the second alkaline filter material 120 are in the same filter cavity, the first alkaline filter material 110 and the second alkaline filter material 120 are immersed in the water body of the filter cavity, when the alkaline water body in the filter cavity is higher than the set pH value, the alkaline substances of the second alkaline filter material 120 are inhibited and cannot (basically cannot) be dissolved, this design has a simple structure, and an integrated filter element can be used. Alternatively, the first alkaline filter material 110 and the second alkaline filter material 120 are arranged in different filter cavities and connected by pipelines, so that the water first flows through the first alkaline filter material 110 and then flows to the second alkaline filter material 120. The high pH alkaline water obtained by flowing through the first alkaline filter material 110 can inhibit the dissolution of alkaline substances in the second alkaline filter material 120. With the accumulation of water flow, the alkalization ability of the first alkaline filter material 110 gradually decreases, so that the pH value of the water flowing to the second alkaline filter body gradually decreases, and the inhibitory effect of the first alkaline filter material 110 on the second alkaline filter body is gradually alleviated. When the pH value is lower than the set pH value, the second alkaline filter body can also gradually and slowly release the alkaline substance. The first alkaline filter material 110 and the second alkaline filter material 120 can cooperate to alkalize the water body, which greatly improves the service life of the filter element.

[0068] Specifically, as a first possible implementation, the first alkaline filter material 110 and the second alkaline filter material 120 are mixed and formed into a filter body, that is, the first alkaline filter material 110 and the second alkaline filter material 120 are fully mixed and pressed or sintered into a filter body with an integrated structure. The carrier of the filter body can be a carbon rod filter material, a carbon fiber filter material, a carbon particle filter material or a ceramic filter material. In specific applications, the alkaline filter material can be mixed in the material of the substrate to form, or it can be attached to the surface of the substrate or dispersed inside the substrate.

[0069] As a second possible implementation scheme, the first alkaline filter material 110 and the second alkaline filter material 120 are integrally formed into a filter body along a set direction, that is, along the set direction, a part of the structure is the first alkaline filter material 110 (first filter body), and a part of the structure is the second alkaline filter material 120 (second filter body); in specific applications, the first alkaline filter material 110 and the second alkaline filter material 120 can be columnar or cylindrical, etc., the first alkaline filter material 110 and the second alkaline filter material 120 can be integrally formed along the axial direction, and the filter body as a whole can be columnar or cylindrical, and taking the axial direction as the up and down direction as an example, the upper part can be the first alkaline filter material 110, and the lower part can be the second alkaline filter material 120 (refer to Figure 4 The first alkaline filter material 110 and the second alkaline filter material 120 are integrally formed inside and outside to form a filter body (refer to Figure 5 shown).

[0070] As a third possible implementation, the first alkaline filter material 110 and the second alkaline filter material 120 are formed separately and assembled along the setting direction to form a filter body; the first alkaline filter material 110 and the second alkaline filter material 120 are formed into a first filter body and a second filter body respectively, and the first filter body and the second filter body can be stacked up and down to form a filter body (refer to Figure 4 As shown), the first filter body and the second filter body can also be provided inside and outside to form a filter body (refer to Figure 5 As shown), for example, the first alkaline filter material 110 and the second alkaline filter material 120 are columnar or cylindrical, and the first alkaline filter material 110 and the second alkaline filter material 120 are integrally formed or split and fixedly connected along the axial direction to form a filter body. The first alkaline filter material 110 and the second alkaline filter material 120 can be bonded to each other, or can be connected by end caps. When the first alkaline filter material 110 and the second alkaline filter material 120 are cylindrical, they can also be connected through a central tube, so that the first alkaline filter material 110 and the second alkaline filter material 120 are axially sleeved on the central tube. Alternatively, the first alkaline filter material 110 and the second alkaline filter body are split and fixedly connected inside and outside the filter body to form a filter body, that is, the first alkaline filter material 110 and the second alkaline filter body are arranged in the radial direction, and the first alkaline filter material 110 can be cylindrical and sleeved on the outside of the second alkaline filter material 120. Alternatively, the first alkaline filter material 110 can be installed in the filter housing, and the second alkaline filter material 120 can be connected to the outside of the filter housing and arranged together in the same filter cartridge 200 (refer to Figure 6 shown).

[0071] As a fourth possible implementation, the first alkaline filter material 110 and the second alkaline filter material 120 are arranged along a set direction of the filter body to form a filter body, so that the alkalinity of the filter body changes along the set direction, that is, along the set direction, the alkalinity of the filter body changes linearly or nonlinearly.

[0072] Of course, in specific applications, the combination of the first alkaline filter material 110 (first filter body) and the second alkaline filter material 120 (second filter body) is not limited to the above-mentioned scheme. The first alkaline filter material 110 (first filter body) and the second alkaline filter material 120 (second filter body) can also be combined and connected by stacking, coating, etc., which will not be repeated here.

[0073] Specifically, in the first alkaline filter material 110 and the second alkaline filter material 120, the mass proportion of the first alkaline filter material 110 is 10%-50%, and the mass proportion of the second alkaline filter material 120 is 50%-90%, that is, the mass proportions of the strong alkaline material and the weak alkaline material are 10%-50% and 50%-90%, respectively. In a specific application, in the first alkaline filter material 110 and the second alkaline filter material 120, the mass proportion of the first alkaline filter material 110 is 15% to 45%, and the mass proportion of the second alkaline filter material 120 is 55% to 85%. For example, the mass proportion of the first alkaline filter material 110 is 20%, and the mass proportion of the second alkaline filter material 120 is 80%; or, the mass proportion of the first alkaline filter material 110 is 25%, and the mass proportion of the second alkaline filter material 120 is 75%; or, the mass proportion of the first alkaline filter material 110 is 30%, and the mass proportion of the second alkaline filter material 120 is 70%; or, the mass proportion of the first alkaline filter material 110 is 35%, and the mass proportion of the second alkaline filter material 120 is 65%; or, the mass proportion of the first alkaline filter material 110 is 40%, and the mass proportion of the second alkaline filter material 120 is 60%; or, the mass proportion of the first alkaline filter material 110 is 45%, and the mass proportion of the second alkaline filter material 120 is 55%; or, the mass proportion of the first alkaline filter material 110 and the second alkaline filter material 120 is 50%. It should be noted that the first alkaline filter material 110 may include one or more alkaline materials, and the equivalent alkalinity thereof may be obtained according to a calculated value or a measured value. The first alkaline filter material 110 may include one or more alkaline materials, and the equivalent alkalinity thereof may be obtained according to a calculated value or a measured value. Table 1 shows the pH values ​​of the flowing water (outlet water) at different flow rates when the first alkaline filter material 110 and the second alkaline filter material 120 have different proportions (mass ratios) of the strong alkaline materials of the alkaline materials.

[0074]

[0075] It can be seen that when the proportion of strong alkaline materials is 0%, that is, there are only weak alkaline materials, the pH value of the water outlet is less than 7 when the first 2000L of water flows, and then the pH value gradually increases to above 7. This is due to the slow dissolution rate of the weak alkaline material itself and its poor ability to alkalize water quality. With the increase of the flow rate, the pH gradually increases to above 7. This is because with the impact of the water flow, the pores inside the weak alkaline material gradually become connected from closed, and the water flow can not only pass through the surface of the material, but also through the inside of the material, which increases the contact area between water molecules and weak alkaline materials and increases the dissolution rate of weak alkaline materials. When the proportion of strong alkaline materials increases to 5%, the pH value in the initial stage (0L) increases. This is because after adding 5% of strong alkaline materials, the strong alkaline materials can play the ability to alkalize water quality in the initial stage, so that the early pH can be improved; when the proportion of strong alkaline materials is 10%, the pH value of the entire life span can be maintained above 7.01. When the strong alkaline material accounts for 40%, its initial pH value can reach 8.25; when the strong alkaline material accounts for 60%, the pH in the initial stage reaches 9.15, which exceeds the range of weak alkaline water; when the strong alkaline material accounts for 100%, the pH value in the initial stage reaches 10.12, which exceeds the upper limit of 9, and decays very quickly. When the flow reaches 6000L, the pH value is less than 7. This is because the strong alkaline material has a strong alkalinizing water quality performance, but due to the rapid dissolution, the material itself is consumed, and the mineralization capacity is weakened in the later stage. In this embodiment, the strong alkaline material accounts for 10%-50%, which can ensure that the initial effluent pH can reach above 7.01 and between 8.89, meet the standard of effluent pH between 7.0 and 9.0, and avoid the effluent pH being too high. At the same time, since the weak alkaline material accounts for 50 to 90%, it can work synergistically with the strong alkaline material to make the overall life of the filter element reach more than 7200L of flow rate. Compared with the 2000L life of ordinary filter elements, the filter element life provided by this embodiment is greatly improved.

[0076] Specifically, the first alkaline filter material 110 includes at least one of brucite, periclase, sepiolite, and magnesite;

[0077] Specifically, the second alkaline filter material 120 includes at least one of calcite, dolomite, stalactite, limestone, and Iceland spar. The first alkaline filter material 110 may be a binary alkaline material, which may be combined with metal elements beneficial to the human body, such as magnesium hydroxide, calcium hydroxide, etc. The second alkaline filter material 120 may be made of calcium carbonate, etc. as a raw material.

[0078] Specifically, the first alkaline filter material 110 uses carbon rod filter material, carbon fiber filter material, carbon particle filter material or ceramic filter material as a carrier; that is, the filter body formed by the first alkaline filter material 110 can be in the shape of carbon rod, carbon fiber, carbon particle and ceramic filter body.

[0079] The second alkaline filter material 120 uses carbon rod filter material, carbon fiber filter material, carbon particle filter material or ceramic filter material as a carrier; that is, the filter body formed by the second alkaline filter material 120 can be in the shape of carbon rod, carbon fiber, carbon particle and ceramic filter body.

[0080] The present invention also provides a method for preparing a filter element, which is used to prepare the above-mentioned filter element, comprising the following steps:

[0081] Raw material acquisition step: respectively acquiring raw materials of the first alkaline filter material 110 and the second alkaline filter material 120;

[0082] Cleaning and drying step: cleaning and drying the raw materials of the first alkaline filter material 110 and the second alkaline filter material 120;

[0083] Crushing step: crushing the raw materials of the first alkaline filter material 110 and the second alkaline filter material 120 to a set mesh size;

[0084] Impurity removal step: performing impurity removal treatment on the crushed first alkaline filter material 110 and the second alkaline filter material 120 to obtain raw material powder;

[0085] Forming step: the raw material powder after impurity removal treatment and the carrier powder are mixed according to a set mass ratio and then formed into a filter body.

[0086] Specifically, the raw materials of the first alkaline filter material 110 and the second alkaline filter material 120 can be ore raw materials, and in the cleaning and drying steps, the cleaned raw materials are dried at 120 degrees Celsius for a set time (2 hours) to remove organic matter such as bacteria adsorbed on the surface of the ore.

[0087] Specifically, in the crushing step, the ore raw material is crushed by a crushing device and screened to obtain powder particles of 20-200 mesh.

[0088] Specifically, in the impurity removal step, the powder particles are again subjected to high-temperature treatment at a set temperature (120 degrees Celsius) to remove impurities such as organic matter adsorbed inside the ore.

[0089] Specifically, the first alkaline filter material 110 and the second alkaline filter material 120 after crushing are mixed with carrier powder to form an integrated filter body; or, the first alkaline filter material 110 and the carrier powder are mixed to form a first alkaline filter body; and the second alkaline filter material 120 and the carrier powder are mixed to form a second alkaline filter body. Specifically, the first alkaline filter body and the second alkaline filter body can be connected as a whole; or, the first alkaline filter body and the second alkaline filter body can be bonded or connected by a fixed structure.

[0090] In specific applications, ore powder (powder particles) is mixed with carbon powder and rubber powder, and a composite carbon rod is made through a carbon rod forming device to obtain a long-lasting weak alkaline mineralized filter element.

[0091] The present invention also provides a filter cartridge, such as Figures 4 to 6 As shown, it includes a cartridge shell 200, in which the above-mentioned filter element is arranged. The cartridge shell 200 can be provided with a filter cartridge water inlet and a filter cartridge water outlet, and the cartridge shell 200 is provided with an internal waterway. The water body is made to flow through the first alkaline filter body and the second alkaline filter body simultaneously or successively. The first alkaline filter body contains a strong alkaline material, and the second alkaline filter body contains a weak alkaline material. The mechanism of synergistic mineralization of the first alkaline filter body and the second alkaline filter body is that when the two materials exist at the same time, a smaller amount of strong alkaline material is used, and more weak alkaline materials are matched, such as: 30% of strong alkaline materials: 70% of weak alkaline materials. In the early stage of use, the strong alkaline material is preferentially precipitated (dissolved), and the mineralization function of the weak alkaline material is inhibited. At this time, the pH value is less than 9. As the use time increases, the strong alkaline material is consumed more, and the mineralization function of the weak alkaline material begins to gradually dominate, extending the overall service life of the filter cartridge.

[0092] Specifically, a filter cavity for simultaneously accommodating the first alkaline filter material 110 and the second alkaline filter material 120 is disposed in the cartridge shell 200; that is, the first alkaline filter material 110 and the second alkaline filter material 120 are disposed in the same filter cavity, and the first alkaline filter material 110 and the second alkaline filter material 120 can be disposed up and down or inside and outside.

[0093] Alternatively, a series water path for successively passing through the first alkaline filter material 110 and the second alkaline filter material 120 is provided in the shell 200, Figure 3 shown.

[0094] Specifically, the first alkaline filter material 110 and the second alkaline filter material 120 are successively disposed in the cartridge shell 200 along the water flow direction in the filter cartridge.

[0095] Specifically, the filter cartridge is provided with a first compartment and a second compartment, the first alkaline filter material 110 is provided in the first compartment, and the second alkaline filter material 120 is provided in the second compartment; the series waterway is connected in series with the first compartment and the second compartment.

[0096] The present invention also provides a waterway system, referring to Figure 3 and Figure 7As shown, it includes a water inlet pipe 161 and a water outlet pipe 162, and the above-mentioned filter element (the first alkaline filter material 110 and the second alkaline filter material 120) is arranged between the water inlet pipe 161 and the water outlet pipe 162. The first alkaline filter material 110 and the second alkaline filter material 120 are arranged in the water system along the direction from the water inlet pipe 161 to the water outlet pipe 162. The first alkaline filter material 110 contains strong alkaline ore, which has a strong ability to adjust the pH value of water flow in the early stage, and the alkaline ions are precipitated faster, but the consumption rate is faster. The second alkaline filter material 120 contains weak alkaline ore, which has a weak ability to adjust the pH value of water flow in the early stage, but the consumption is slow and stable in the later stage. Therefore, the first alkaline filter material 110 (strong alkaline filter material) and the second alkaline filter material 120 (weak alkaline filter material) can be connected in series, so that the water flow can be adjusted to the required range through the first alkaline filter material 110 (strong alkaline filter material) in the early stage. When the first alkaline filter material 110 (strong alkaline filter material) is consumed to a certain extent, the second alkaline filter material 120 (weak alkaline filter material) slowly plays a role and dominates the water quality adjustment to a stable range in the later stage.

[0097] Specifically, Figure 7 As shown, the waterway system includes a serial-parallel switching waterway, and the serial-parallel switching waterway includes a first waterway 141 and a second waterway 142 in parallel, and the first waterway 141 and the second waterway 142 are connected between the water inlet pipe 161 and the water outlet pipe 162; the first waterway 141 is provided with the first alkaline filter material 110, and the second waterway 142 is provided with the second alkaline filter material 120. The first waterway 141 is provided with a first control valve 151, which can control the flow rate or on-off of the first waterway 141, and the first control valve 151 can be set downstream of the first alkaline filter material 110. The second waterway 142 is provided with a second control valve 152, and the second control valve 152 can be set upstream of the second alkaline filter material 120, and can control the flow rate or on-off of the second waterway 142. The upstream of the first water channel 141 and the second water channel 142 is connected to the water inlet pipe 161, and the downstream of the first water channel 141 and the second water channel 142 is connected to the water outlet pipe 162. The first water channel 141 and the second water channel 142 may be provided with a PH sensor or / and a TDS sensor downstream of the first alkaline filter material 110 and the second alkaline filter material 120. In a specific application, a PH sensor or / and a TDS sensor may be provided at the water outlet pipe 162 to obtain the PH value and TDS value of the outlet water.

[0098] The series-parallel switching water circuit includes a switching pipeline 143, one end of the switching pipeline 143 is connected between the downstream of the first alkaline filter material 110 and the first control valve 151, and the other end of the switching pipeline 143 is connected between the upstream of the second alkaline filter material 120 and the second control valve 152. The switching pipeline 143 is provided with a switching control valve 153, which can control the flow or on-off of the switching pipeline 143.

[0099] For example, in a large flow scenario, water can flow through the first alkaline filter material 110 and the second alkaline filter material 120 in sequence, the first control valve 151 and the switching control valve 153 can be opened, and the second control valve 152 can be closed, and the water can flow through the first alkaline filter material 110 and the second alkaline filter material 120 in sequence.

[0100] For example, in a small flow scenario, water can flow through the second alkaline filter material 120 alone, the first control valve 151 and the switching control valve 153 can be closed, and the second control valve 152 can be opened, and water can flow through the second alkaline filter material 120 alone.

[0101] For example, in some scenarios, water can flow through the first alkaline filter material 110 alone, the second control valve 152 and the switching control valve 153 can be closed, and the first control valve 151 can be opened, and water can flow through the first alkaline filter material 110 alone.

[0102] Specifically, the water channel system includes an alkaline water channel, one end of which is connected to the water inlet pipe 161, and the other end of which is connected to the water outlet pipe 162, and the first alkaline filter material 110 and the second alkaline filter material 120 are connected to the alkaline water channel; the water channel system also includes a non-alkaline water channel, which is arranged in parallel with the alkaline water channel, and the two ends of the non-alkaline water channel are respectively connected to the water inlet pipe 161 and the water outlet pipe 162.

[0103] Specifically, the first alkaline filter material 110 and the second alkaline filter material 120 are arranged in the same cartridge shell 200. Of course, in a specific application, the number of alkaline filter materials can be three or more, and the alkalinity of each filter material can be gradiently changed. Alternatively, the first alkaline filter material 110 and the second alkaline filter material 120 are arranged in different cartridge shells 200, and each cartridge shell 200 can be connected in series through a pipeline. Of course, a third alkaline filter material can also be provided, and the number of cartridge shells 200 can also be three or more.

[0104] The present invention also provides a mineral spring mineralized water purifier, comprising a housing, wherein the housing is provided with the above-mentioned filter element;

[0105] Alternatively, the housing is provided with a filter cartridge as described above;

[0106] Alternatively, the casing is provided with a water system as mentioned above.

[0107] Optionally, the mineral spring mineralized water purifier is provided with a sensor component for obtaining the pH value of the water outlet; the mineral spring mineralized water purifier is provided with a display component for displaying the pH value of the water outlet. The sensor component may be a pH sensor. Alternatively, as an alternative to the pH sensor, a TDS sensor may be provided at the upstream and downstream of the alkaline waterway, respectively, to detect the conductivity of the water body through the TDS sensor. The higher the TDS value, the more dissolved substances are contained in the water. Generally, the alkaline substances in the water body can be roughly understood by the conductivity value. The higher the conductivity, the higher the alkaline substances, and the higher the TDS value. The TDS sensor is an instrument that reflects the degree of mineralization of water quality by measuring the conductivity of water. Conductivity is an indicator of the ion concentration in water, reflecting the ability of dissolved substances in water to conduct electricity. Dissolved substances in water form ions, which can transmit current when moving in water, so conductivity can be used to evaluate the ion concentration in water. The higher the conductivity, the higher the ion concentration in the water, and it may contain more dissolved substances. In the water treatment process, conductivity can be used to monitor changes in water quality. According to the preset data model, the pH value can be reflected by the TSD sensor. In specific applications, flow rate sensors can be respectively arranged upstream and downstream of the alkaline waterway, and a first water flow rate sensor or flow meter is arranged upstream of the alkaline filter material, and the first water flow rate sensor or flow meter is used to detect the water flow rate upstream. The first water flow rate indicates the speed of the water flow before passing through the alkaline filter material (the first alkaline filter material 110, the second alkaline filter material 120). Similarly, a second water flow rate sensor or flow meter is arranged downstream of the alkaline filter material, and the second water flow rate sensor or flow meter is used to detect the water flow rate downstream of the alkaline filter material. The second water flow rate indicates the speed of the water flow after passing through the alkaline filter material. When the water flow rate increases, the flushing effect of the water flow on the TDS sensor may increase, resulting in a low reading of the TDS sensor; conversely, when the water flow rate decreases, the flushing effect of the water flow on the TDS sensor is weakened, and the reading of the TDS sensor may be high. Therefore, after obtaining the first water flow velocity upstream of the alkaline filter material and the second water flow velocity downstream, the first soluble substance content value TDS1 can be corrected according to the first water flow velocity, and the second soluble substance content value TDS2 can be corrected according to the second water flow velocity through a preset correction model, so as to eliminate the measurement error of the soluble substance content values ​​upstream and downstream of the alkaline filter material caused by the change in water flow velocity, and the pH value can be obtained more accurately. In specific applications, a flow meter can be provided upstream of the alkaline filter material (the first alkaline filter material 110 and the second alkaline filter material 120) to obtain the cumulative flow rate flowing through the first alkaline filter material 110 and the second alkaline filter material 120, which can be further corrected by combining the TDS values ​​of the first alkaline filter material 110 and the second alkaline filter material 120 through a preset correction model.In specific applications, the life of the alkaline filter material can also be determined by a TDS sensor. In some embodiments, a TDS sensor is used to detect the downstream soluble substance content value of the alkaline filter material, and it can be determined based on a preset model whether the life of the alkaline filter material has reached a preset replacement standard.

[0108] Optionally, the mineral spring mineralized water purifier has an alkaline water path flowing through the first alkaline filter material 110 and the second alkaline filter material 120, and the mineral spring mineralized water purifier also has a non-alkaline water path, the alkaline water path and the non-alkaline water path are connected with a diversion control valve, and a pH sensor can be provided at the water outlet of the alkaline water path. When the pH value of the outlet water of the alkaline water path is high, the water of the non-alkaline water path can be mixed with the water of the alkaline water path through the diversion control valve to make the pH value of the outlet water within an appropriate range.

[0109] Optionally, according to the set outlet water pH value, the flow rate of the alkaline waterway and the flow rate of the non-alkaline waterway are controlled respectively, so that the pH value of the outlet water is the set outlet water pH value. In specific applications, control valves can be provided in the alkaline waterway and the non-alkaline waterway respectively to control the flow rate of the alkaline waterway and the non-alkaline water. The non-alkaline waterway can be a pure water waterway or an acidic waterway. In specific applications, the non-alkaline waterway can be connected to a metasilicic acid filter element or a pure carbon filter element, etc.

[0110] In specific applications, one, two or more alkaline waterways may be provided. The two aforementioned filter cartridges may be connected in parallel, and the alkalinity of the filter materials inside the two filter cartridges may be different, and the water may be switched to flow through the corresponding filter cartridge according to the water flow rate. For example, at a larger flow rate or when a higher pH value is set, the water may flow through a filter cartridge with a higher alkalinity. At a smaller flow rate or when a lower pH value is set, the water may flow through a filter cartridge with a relatively lower alkalinity, and the water flow ratio between the filter cartridges may be controlled. Of course, a pure water waterway may also be provided to control the final outlet pH value.

[0111] In this embodiment, the first alkaline filter material 110 contains a strong alkaline mineralized material, and the second alkaline filter material 120 contains a weak alkaline mineralized material. Strong alkaline mineralized materials include brucite, periclase, sepiolite and other ores with high solubility. When these materials are in water, they can quickly consume hydrogen ions in water and release hydroxide ions, thereby increasing the pH value of water. When a single strong alkaline material is used, it usually leads to an excessively high pH (over 9) in the early stage. As the use time increases, the pH value gradually decays to less than 9. In the later stage of the life, due to the consumption of mineralized materials, the passivation of the ore surface is aggravated, and the pH value gradually decreases to 7 or even less than 7. Weakly alkaline mineralized materials include calcite, dolomite, stalactites and other ores with low solubility. When these materials react with water, they consume hydrogen ions in water slowly, and produce hydroxide ions through the hydrolysis of carbonate ions, thereby increasing the pH value of water. When only weak alkaline materials are used, the pH value is usually low in the early stage (below 7). As the use time increases, the pH value gradually increases to above 7 and the service life is longer.

[0112] In the first alkaline filter material 110, brucite is taken as an example. The brucite contains Mg(OH)2, which enables the brucite to react in the water body to release (dissolve) OH - , which increases the pH value of the water.

[0113] Reaction A: Mg(OH)2=Mg 2+ +2OH -

[0114] In the second alkaline filter material 120, the weak alkaline filter material can be made of weak alkaline materials, such as at least one of calcite, dolomite, stalactite, limestone, Iceland spar, etc. Taking calcite as an example, calcite contains CaCO3. When calcite is immersed in water, reaction B will first occur to release CO3 in water. 2- , then CO3 2- Can undergo hydrolysis reaction with H2O to generate OH - .

[0115] Reaction B: CaCO3=Ca 2+ +CO3 2-

[0116] Reaction C:

[0117] It can be found that the strong alkaline filter material only needs one step reaction to obtain OH - , weakly alkaline filter materials require two steps of reaction to obtain OH - , and the rate of reaction C is much lower than that of reaction A, so the strong alkaline material will preferentially dissolve OH into the water. -Moreover, reaction C is a reversible reaction. When reaction A occurs first, the chemical equilibrium of reaction C will shift to the left. Therefore, the strong alkaline filter material can inhibit the OH of the weak alkaline filter material. - release.

[0118] The present invention provides a filter element and its design, preparation method, filter cartridge, water system and mineralized water purifier. The inhibitory mechanism of strong alkaline materials on weak alkaline materials is used to design a long-lasting alkaline filter element. The first alkaline filter material 110 (strong alkaline material) dissolves alkaline substances in the early stage and inhibits the second alkaline filter material 120 (weak alkaline material) from dissolving alkaline substances; in the middle and late stages, the inhibitory effect of the first alkaline filter material 110 (strong alkaline material) on the second alkaline filter material 120 (weak alkaline material) is alleviated. The first alkaline filter material 110 and the second alkaline filter material 120 respectively dissolve alkaline substance filter elements in the middle and late stages, which can perform long-term alkalization of the water body. Within the overall life range of the filter element, the pH value of the alkaline water quality can reach the design standard. The filter element has a long life and does not need to be frequently replaced. It can provide alkaline water that meets the standards, which is conducive to meeting users' high-end needs for drinking water and has a good user experience.

[0119] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent substitution or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A filter element design method, characterized in that: The following steps are involved: Designing a first alkaline filter material and a second alkaline filter material, wherein the second alkaline filter material is designed to be inhibited from dissolving alkaline substances in an environment of water with a pH value higher than a set pH value; The alkalinity of the first alkaline filter material is designed to be higher than that of the second alkaline filter material, the pH value of the water flowing through the first alkaline filter material in the early stage of the design is higher than the set pH value, and the pH value of the water flowing through the first alkaline filter material in the later stage of the design is lower than the set pH value; The first alkaline filter material is designed to dissolve alkaline substances in the early stage and inhibit the second alkaline filter material from dissolving alkaline substances; The first alkaline filter material and the second alkaline filter material are designed to dissolve alkaline substances in the middle and late stages respectively.

2. A filter element, characterized in that: It includes a first alkaline filter material and a second alkaline filter material, the alkalinity of the first alkaline filter material is higher than that of the second alkaline filter material, the second alkaline filter material is inhibited from dissolving alkaline substances in an environment of water body with a pH value higher than a set pH value, the pH value of the water body when the first alkaline filter material dissolves alkaline substances in the early stage is higher than the set pH value, and the pH value of the water body when the first alkaline filter material dissolves alkaline substances in the later stage is lower than the set pH value; the first alkaline filter material and the second alkaline filter material are in the same filter cavity, or the first alkaline filter material and the second alkaline filter material are arranged in different filter cavities and connected by a pipeline.

3. A filter element as claimed in claim 2, characterized in that: The first alkaline filter material and the second alkaline filter material are mixed and formed into a filter body; Alternatively, the first alkaline filter material and the second alkaline filter material are integrally formed into a filter body along a set direction; Alternatively, the first alkaline filter material and the second alkaline filter material are formed separately and assembled along the setting direction to form a filter body; Alternatively, the first alkaline filter material and the second alkaline filter material are arranged along a set direction of the filter body to form a filter body, so that the alkalinity of the filter body changes along the set direction.

4. A filter element as claimed in claim 2, characterized in that: The first alkaline filter material and the second alkaline filter material are in a columnar or cylindrical shape, and the first alkaline filter material and the second alkaline filter material are integrally formed or separately formed along the axial direction and fixedly connected to form a filter body; The first alkaline filter material and the second alkaline filter material are integrally formed inside and outside or separately formed and fixedly connected to form a filter body.

5. A filter element as claimed in claim 2, characterized in that: Of the first alkaline filter material and the second alkaline filter material, the first alkaline filter material accounts for 10%-50% by weight, and the second alkaline filter material accounts for 50%-90% by weight.

6. A filter element as claimed in claim 2, characterized in that: The first alkaline filter material includes at least one of brucite, periclase, sepiolite, and magnesite; The second alkaline filter material includes at least one of calcite, dolomite, stalactite, limestone, and Iceland spar.

7. A filter element according to claim 3 or 4, characterized in that: The first alkaline filter material is a carbon rod filter material, a carbon fiber filter material, a carbon particle filter material or a ceramic filter material as a carrier; The second alkaline filter material is carried by carbon rod filter material, carbon fiber filter material, carbon particle filter material or ceramic filter material.

8. A method for preparing a filter element, characterized in that: A method for preparing a filter element according to any one of claims 2 to 6, comprising the following steps: Raw material acquisition step: respectively acquiring the raw materials of the first alkaline filter material and the second alkaline filter material; Cleaning and drying step: cleaning and drying the raw materials of the first alkaline filter material and the second alkaline filter material; Crushing step: crushing the raw materials of the first alkaline filter material and the second alkaline filter material to a set mesh size; The impurity removal step is to remove impurities from the crushed first alkaline filter material and the second alkaline filter material to obtain raw material powder; Forming step: the raw material powder after impurity removal treatment and the carrier powder are mixed according to a set mass ratio and then formed into a filter body.

9. The method for preparing a filter element according to claim 8, characterized in that: The crushed first alkaline filter material, the second alkaline filter material and the carrier powder are mixed together to form an integrated filter body; or, the first alkaline filter material and the carrier powder are mixed to form a first alkaline filter body; the second alkaline filter material and the carrier powder are mixed to form a second alkaline filter body.

10. The method for preparing a filter element according to claim 9, characterized in that: Integrally connecting the first alkaline filter and the second alkaline filter; Alternatively, the first alkaline filter body and the second alkaline filter body are bonded or connected via a fixed structure.

11. A filter cartridge, characterized in that: It comprises a cartridge shell, in which a filter element as claimed in any one of claims 2 to 7 is arranged.

12. A filter cartridge according to claim 11, characterized in that: The cylindrical shell is provided with a filter cavity for simultaneously accommodating the first alkaline filter material and the second alkaline filter material; Alternatively, a series water channel for sequentially flowing through the first alkaline filter material and the second alkaline filter material is provided in the cartridge shell.

13. A filter cartridge according to claim 12, characterized in that: The first alkaline filter material and the second alkaline filter material are arranged in the cartridge shell in sequence along the water flow direction in the filter cartridge.

14. A filter cartridge according to claim 12, characterized in that: The filter cartridge is provided with a first compartment and a second compartment, the first alkaline filter material is provided in the first compartment, and the second alkaline filter material is provided in the second compartment; the series waterway is connected in series with the first compartment and the second compartment.

15. A water system, comprising a water inlet pipe and a water outlet pipe, characterized in that: A filter element as claimed in any one of claims 2 to 7 is arranged between the water inlet pipe and the water outlet pipe, and the first alkaline filter material and the second alkaline filter material are arranged in the water system along the direction from the water inlet pipe to the water outlet pipe.

16. A waterway system according to claim 15, characterized in that: The waterway system includes a serial-parallel switching waterway, the serial-parallel switching waterway includes a first waterway and a second waterway in parallel, the first waterway and the second waterway are connected between the water inlet pipe and the water outlet pipe; the first waterway is provided with the first alkaline filter material, and the second waterway is provided with the second alkaline filter material; The series-parallel switching water circuit includes a switching pipeline, one end of which is connected to the downstream of the first alkaline filter material, and the other end of which is connected to the upstream of the second alkaline filter material. The switching pipeline is provided with a switching control valve.

17. A waterway system according to claim 15, characterized in that: The water system comprises an alkaline water channel, one end of the alkaline water channel is connected to the water inlet pipe, the other end of the alkaline water channel is connected to the water outlet pipe, and the first alkaline filter material and the second alkaline filter material are connected to the alkaline water channel; The water channel system further includes a non-alkaline water channel, which is arranged in parallel with the alkaline water channel, and two ends of the non-alkaline water channel are respectively connected to the water inlet pipe and the water outlet pipe.

18. A waterway system according to claim 15, characterized in that: The first alkaline filter material and the second alkaline filter material are arranged in the same cartridge shell, or the first alkaline filter material and the second alkaline filter material are arranged in different cartridge shells.

19. A mineral water purifier, characterized in that: A machine housing is provided with a filter element as claimed in any one of claims 2 to 7; Alternatively, the housing is provided with a filter cartridge as claimed in any one of claims 11 to 14; Alternatively, the casing is provided with a water channel system as claimed in any one of claims 15 to 18.

20. The mineral water purifier according to claim 19, characterized in that: The mineral spring mineralized water purifier is provided with a sensor component for obtaining the pH value of the output water; the mineral spring mineralized water purifier is provided with a display component for displaying the pH value of the output water.

21. The mineral water purifier according to claim 19, characterized in that: The mineral spring mineralized water purifier has an alkaline water path flowing through the first alkaline filter material and the second alkaline filter material, and the mineral spring mineralized water purifier also has a non-alkaline water path, and the alkaline water path and the non-alkaline water path are connected to a diversion control valve.

22. A mineral water purifier according to claim 21, characterized in that: According to the set outlet water pH value, the flow rate of the alkaline water channel and the flow rate of the non-alkaline water channel are controlled respectively, so that the pH value of the outlet water is the set outlet water pH value.

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