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

Abstract

The invention is applicable to the technical field of preparation of zinc-containing / zinc-rich drinking water, and discloses a filter element, a design and preparation method thereof, a filter cartridge, a waterway system and a mineralization water purifier. According to the design method, a filter element is designed, the filter element comprises a zinc-containing filter material and an alkaline filter material, water flow is designed to sequentially or simultaneously flow through the zinc-containing filter material and the alkaline filter material when flowing, and the zinc-containing filter material is soaked in alkaline water when the water flow is designed to stop so as to inhibit excessive dissolution of zinc in the zinc-containing filter material. Through combined application of the zinc-containing filter material and the alkaline filter material, the zinc-containing filter material can normally dissolve out zinc element during overflowing, the zinc-containing filter material is soaked in the alkaline water body by utilizing the inhibition effect of the alkaline water body on zinc element dissolution, dissolution overrun of the zinc-containing filter element can be avoided in the soaking state, the zinc-rich drinking water meeting the standard can be provided, and the water quality can be improved. And the technical problem that the zinc-containing filter material is easy to dissolve out and overrun during soaking is solved, and the negative influence on the health of a user who drinks a water body with the zinc content exceeding the standard is prevented.

Description

Technical Field

[0001] The present application relates to the technical field of zinc-containing / zinc-rich drinking water preparation, and in particular to a zinc-mineralized filter element and its design, preparation method, filter cartridge, water system and mineralized water purifier. Background Art

[0002] Zinc-mineralized filter elements (zinc-containing filter elements) refer to such filter elements that use materials containing zinc as filter media. Current water purifiers mostly use RO filter elements to filter water bodies, and the pure water obtained after filtration is not conducive to the supplement of trace elements that are beneficial to humans, and long-term drinking of pure water is not healthy. Zinc-mineralized filter elements can supplement zinc elements that are beneficial to the human body and can produce zinc-rich drinking water. The zinc-containing filter element in the prior art has a high concentration of zinc (up to about 6 mg / L) after the water flow in the filter element stops flowing and the zinc-containing filter element is soaked in water for a certain period of time (generally several hours). The concentration is far higher than the standard (upper limit 1.0 mg / L). If the human body drinks water with excessive zinc concentration, it will also have a negative impact on the human body and is not conducive to human health.

[0003] The national standard for natural mineral water stipulates that the zinc concentration of natural mineral water must be between 0.2 and 1.0 mg / L. After soaking for a period of time, the zinc concentration in the filter element will exceed 1.0 mg / L, resulting in excessive zinc. 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, so that the zinc-containing filter material can normally dissolve the zinc element when flowing, and utilize the inhibitory effect of the alkaline environment on the dissolution of the zinc element to avoid the dissolution of the zinc-containing filter element exceeding the limit, and prevent the human body from drinking drinking water with excessive zinc content.

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

[0006] A zinc-containing filter material and an alkaline filter material are designed, and water is designed to flow through the zinc-containing filter material and the alkaline filter material successively or simultaneously when the water flow is flowing. When the water flow stops, the zinc-containing filter material is designed to be immersed in alkaline water to inhibit excessive dissolution of zinc in the zinc-containing filter material.

[0007] Optionally, the zinc-containing filter material and the alkaline filter material are designed to be in the same filter cavity, and the water flow is designed to pass through the zinc-containing filter material and the alkaline filter material successively or simultaneously, and the alkaline water formed by the alkaline filter material is soaked in the zinc-containing filter material;

[0008] Alternatively, the zinc-containing filter material and the alkaline filter material are designed to be in different filter cavities, the water flow is designed to pass through the zinc-containing filter material and the alkaline filter material successively, and the alkaline water is designed to enter the filter cavity of the zinc-containing filter material when the water flow stops.

[0009] Optionally, the pH value of the alkaline water used to soak the zinc-containing filter material is designed to be 8.0 to 8.5.

[0010] The present invention also provides a filter element, characterized in that it includes a zinc-containing filter material and an alkaline filter material, and the zinc-containing filter material and the alkaline filter material are integrally formed; or, the zinc-containing filter material and the alkaline filter material are separately formed and fixedly connected; or, the zinc-containing filter material and the alkaline filter material are separately arranged in different filter cavities and are interconnected.

[0011] Optionally, the zinc-containing filter material and the alkaline filter material are mixed and formed into a filter body;

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

[0013] Alternatively, the zinc-containing filter material and the alkaline filter material are formed separately and assembled to form a filter body.

[0014] Optionally, the zinc-containing filter material and the alkaline filter material are in a columnar or cylindrical shape, and the zinc-containing filter material and the alkaline filter material are integrally formed or separately formed and fixedly connected along the axial direction to form a filter body;

[0015] The zinc-containing filter material and the alkaline filter material are integrally formed inside and outside or separately formed and fixedly connected to form a filter body.

[0016] The present invention also provides a method for preparing a filter element, which is used to prepare the above-mentioned filter element, wherein the zinc-containing filter material includes zinc-containing ore, flux and pore-forming agent;

[0017] The preparation method comprises the following steps:

[0018] The zinc-containing ore is crushed and mixed with a flux and a pore-forming agent to obtain a mixed material;

[0019] Placing the mixed material in a calcining device and calcining at a set temperature for a set time;

[0020] The calcined mixed material is prepared and formed into a zinc-containing filter body.

[0021] Optionally, in the zinc-containing filter material, the mass proportion of the flux is 0.5%-2%, the mass proportion of the pore-forming agent is 1%-3%, and the rest is zinc-containing ore;

[0022] The zinc-containing ore includes at least one of smithsonite, calamine and hydrozincite;

[0023] The flux comprises at least one of sodium chloride, potassium chloride, sodium nitrate, potassium nitrate and sodium phosphate;

[0024] The pore former includes at least one of sodium bicarbonate and ammonium bicarbonate.

[0025] Optionally, the mixed material is placed in a calcination device at a calcination temperature of 600 to 1000 degrees Celsius;

[0026] The calcination time is 2 to 4 hours.

[0027] Optionally, the alkaline filter material is supported by a carbon rod filter material, a carbon fiber filter material, a carbon particle filter material or a ceramic filter material and is connected to the zinc-containing filter body.

[0028] Optionally, the forming of the alkaline filter material comprises the following steps:

[0029] Raw material acquisition steps: obtain alkaline ore as raw material;

[0030] Cleaning and drying steps: cleaning and drying the alkaline ore;

[0031] Crushing step: crush the alkaline ore to a set mesh size;

[0032] Impurity removal step: removing impurities from the alkaline ore to obtain alkaline ore powder;

[0033] Forming step: the alkaline ore powder after impurity removal is mixed with the carrier powder in a set mass ratio and then formed into an alkaline filter body. The alkaline filter body can be fixedly connected to the zinc-containing filter body as a filter body. For example, the zinc-containing filter body and the alkaline filter body are fixedly connected up and down or connected inside and outside. In specific applications, the zinc-containing filter body can be cylindrical and sleeved on the alkaline filter body, and the water flows from the zinc-containing filter body to the alkaline filter body. Alternatively, the alkaline filter body is cylindrical and can be sleeved on the zinc-containing filter body. The zinc-containing filter body can be cylindrical, and the water flows from the inside to the outside in a radial direction, that is, it first flows through the zinc-containing filter body and then flows through the alkaline filter body.

[0034] The filter element prepared by the above method uses pore-forming materials to modify zinc ore so that its internal pores are connected, thereby increasing the specific surface area of ​​the zinc ore, increasing the reaction rate with water under overflow conditions, and promoting the precipitation of zinc. Under a larger flow rate, the concentration of zinc dissolution can reach more than 0.2 mg / L, reaching the standard of zinc-rich water; at the same time, alkaline materials and zinc ore are combined, and the alkalinity value is increased under immersion conditions, which inhibits the precipitation of zinc elements, so that the concentration of the immersion water will not exceed 1.0 mg / L, thereby avoiding excessive intake of zinc by the human body.

[0035] The present invention further provides a filter cartridge, comprising a cartridge shell, wherein the above-mentioned filter element is arranged in the cartridge shell.

[0036] The saturation concentration of zinc-containing filter material (zinc ore) immersed in water is about 6 mg / L, which is far beyond the upper limit requirement of 1.0 mg / L. In order to prevent the zinc ore from continuously precipitating zinc during immersion, in the present invention, the alkaline filter material (alkaline ore) and the zinc-containing filter material (zinc ore) are mixed and matched, and the alkaline ore adopts a large amount of weak alkaline material or a small amount of strong alkaline material in order not to affect the mineralization precipitation ability of the zinc ore during flow. During immersion, the alkaline material precipitates a large amount of hydroxide ions, which quickly increases the pH value of the zinc ore immersion water to above 8, thereby reducing the saturated solubility of zinc in water, inhibiting the dissolution rate of zinc ore, and making the concentration of zinc not exceed 1.0 mg / L.

[0037] Optionally, a filter chamber is provided in the shell, and the zinc-containing filter material and the alkaline filter material are provided in the same filter chamber; or, a first filter chamber and a second filter chamber are provided in the shell, and the first filter chamber and the second filter chamber are connected through a channel, the zinc-containing filter material is provided in the first filter chamber, and the alkaline filter material is provided in the second filter chamber. When the water flow stops, the alkaline water can pass through the channel to make the water in the first filter chamber alkaline. When the water flows, it passes through the zinc-containing filter material and the alkaline filter material successively, and the zinc element can be dissolved normally. At the same time, the outlet water is weakly alkaline (PH value is less than 9), and the drinking taste is good. When the water production stops, the alkaline filter material maintains the pH value of the soaking water between 8-9, which can suppress the dissolution of the zinc element at a lower level and ensure that the concentration does not exceed 1.0 mg / L.

[0038] Optionally, the zinc-containing filter material and the alkaline filter material are successively arranged in the cartridge shell along the direction of water flow in the filter cartridge. The zinc-containing filter material and the alkaline filter material can be arranged up and down along the axial direction of the filter cartridge. Of course, the zinc-containing filter material and the alkaline filter material can also be arranged radially inside and outside the filter cartridge. The arrangement and connection form of the zinc-containing filter material and the alkaline filter material can be set according to actual conditions. In some application scenarios, the upstream of the zinc-containing filter material can be selectively connected with an acidic filter material. In a large-flow water production, when the zinc element of the zinc-containing filter material is insufficiently dissolved (the concentration is lower than 0.2 mg / L), the acidic filter material can be selectively connected to the zinc-containing filter material, that is, the acidic water can flow through the zinc-containing filter material to promote the dissolution of the zinc element in the zinc-containing filter material, so that the concentration is between 0.2 mg / L and 1.0 mg / L.

[0039] The present invention also provides a water system, comprising a pure water inlet pipe and a mineralized water outlet pipe, wherein the above-mentioned filter element is arranged between the pure water inlet pipe and the mineralized water outlet pipe, and the zinc-containing filter material and the alkaline filter material are arranged in the water system along the direction from the pure water inlet pipe to the mineralized water outlet pipe.

[0040] Optionally, the water system has a filter element installation cavity, the zinc-containing filter material and the alkaline filter material are arranged in the same filter element installation cavity, and the pure water inlet pipe and the mineralized water outlet pipe are connected to the filter element installation cavity;

[0041] Alternatively, the water channel system includes a zinc-mineralized water channel, along which a water flow direction is preset, and the zinc-containing filter material and the alkaline filter material are successively arranged in the zinc-mineralized water channel.

[0042] Optionally, the zinc-containing filter material and the alkaline filter material are arranged in different filter chambers, and the zinc-mineralized water circuit is connected with a reflux pipeline for selectively returning the alkaline water formed by the alkaline filter material to the filter chamber of the zinc-containing filter material.

[0043] Optionally, the water system further includes a pure water channel, which is arranged in parallel with the zinc mineralization water channel, and two ends of the pure water channel are respectively connected to the pure water inlet pipe and the mineralized water outlet pipe.

[0044] Optionally, the water system includes a zinc-mineralized water channel and an alkaline water channel, and the zinc-mineralized water channel and the alkaline water channel are connected in parallel between the pure water inlet pipe and the mineralized water outlet pipe; the zinc-mineralized water channel is provided with the zinc-containing filter material, and the alkaline water channel is provided with the alkaline filter material;

[0045] The water channel system further includes an inhibition water channel, one end of which is connected to the downstream of the alkaline filter material, and the other end of which is connected to the upstream of the zinc-containing filter material. The inhibition water channel is provided with a switching control valve.

[0046] The present invention also provides a mineral spring mineralization water purifier, which is provided with the above-mentioned water system. Under the conditions of overflow and immersion, the zinc element concentration is between 0.2 and 1.0 mg / L, meeting the relevant national standards.

[0047] Optionally, the mineral water purifier has a mineralized water path that flows through the zinc-containing filter material and the alkaline filter material successively, and the mineral water purifier also has a pure water path, which is arranged in parallel with the mineralized water path, and the mineralized water path and the pure water path are connected with a flow control valve.

[0048] Optionally, the mineralized water channel is provided with a first sensor for obtaining a pH value of the mineralized water channel, and / or the mineralized water channel is provided with a second sensor for obtaining a TDS value of the mineralized water channel.

[0049] Optionally, the mineral water purifier has a control component, the first sensor and the second sensor are connected to the control component, and the flow control valve is connected to the control component. The control component is used to adjust the flow control valve according to the pH value and / or TDS value of the mineral water channel, control the flow of the mineral water channel and the pure water channel, so that the water output of the mineral water purifier meets the preset standards.

[0050] The present invention provides a filter element and its design, preparation method, filter cartridge, water system and mineralized water purifier. By arranging a combination of zinc-containing filter material and alkaline filter material, the zinc-containing filter material can normally dissolve the zinc element when flowing through. The alkaline water provided by the alkaline filter material utilizes the inhibitory effect of the alkaline water on the dissolution of the zinc element. The alkaline water is used to soak the zinc-containing filter material, and the dissolution of the zinc-containing filter element exceeding the limit can be avoided in the soaking state. In this way, it is possible to provide zinc-rich drinking water that meets the standards, and solve the technical problem that the zinc-containing filter material is easy to dissolve beyond the limit during soaking, thereby preventing users from drinking water containing excessive zinc and having a negative impact on their health. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 The H provided in the embodiment of the present invention 2 CO 3 -HCO 3 - -CO 3 2- Balance diagram in water;

[0052] Figure 2 This is a plan view of the zinc-containing filter material and the alkaline filter material in the filter element provided by the embodiment of the present invention when they are arranged up and down;

[0053] Figure 3 A cross-sectional schematic diagram of the zinc-containing filter material and the alkaline filter material in the filter element provided by an embodiment of the present invention when they are arranged inside and outside;

[0054] Figure 4 A three-dimensional cross-sectional schematic diagram of the zinc-containing filter material and the alkaline filter material in the filter cartridge provided by an embodiment of the present invention when they are arranged inside and outside;

[0055] Figure 5 A waterway diagram of one implementation of the waterway system provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0056] 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.

[0057] It should be noted that the terms “setting” and “connecting” 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.

[0058] 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.

[0059] 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.

[0060] The embodiment of the present invention provides a filter element design method for designing a zinc-containing filter element. When water flows through, the zinc-containing filter element can dissolve zinc elements to form zinc-rich mineralized water. The method comprises the following steps:

[0061] refer to Figures 2 to 4As shown, a zinc-containing filter material 110 and an alkaline filter material 120 are designed. When water flows, it is designed that the zinc-containing filter material 110 and the alkaline filter material 120 flow sequentially or simultaneously. When the water flow stops, it is designed that the zinc-containing filter material 110 is immersed in alkaline water to inhibit excessive dissolution of zinc in the zinc-containing filter material 110. In this way, when water is normally produced, that is, when the water flows (overflow), the zinc-containing filter material 110 can be dissolved normally to form zinc-rich mineralized water. When water production is stopped, since the water inlet provided by the general water purifier is pure water or acidic water, the zinc-containing filter material 110 will be soaked for a certain period of time. The concentration of zinc dissolved will exceed the set standard. When the zinc concentration is too high, it has a negative effect on the human body. When the human body takes in too much zinc, zinc overload may cause symptoms such as nausea, vomiting, and diarrhea, because too much zinc can stimulate the gastrointestinal tract and cause digestive disorders; moreover, it may also cause neurological symptoms, and symptoms such as headaches, fatigue, and insomnia may occur, because too much zinc can affect the normal function of the nervous system. In addition, zinc overload may also lead to low resistance. Excessive zinc can inhibit the phagocytosis and bactericidal effects of white blood cells, making it easier for pathogens to invade the body. Excessive zinc may also cause memory loss. Excessive zinc can inhibit the release and synthesis of neurotransmitters, affect brain function, and cause symptoms such as memory loss and inattention. Excessive zinc intake may also lead to anemia: excessive zinc will affect the absorption and utilization of iron in the body. Long-term excessive intake of zinc may increase the risk of heart disease. Therefore, when the concentration of zinc dissolution exceeds the standard, it has a negative impact on the human body. How to prevent excessive dissolution of zinc in the zinc-containing filter element has always been a technical difficulty in this field. In the present invention, by setting an alkaline filter body, the soaking water is alkaline, and the zinc-containing filter element will be immersed in the alkaline water, so that the dissolution of zinc is inhibited, thereby preventing the zinc concentration in the water from exceeding the set standard.

[0062] Optionally, the zinc-containing filter material 110 and the alkaline filter material 120 are designed to be in the same filter cavity, and the water flow is designed to pass through the zinc-containing filter material 110 and the alkaline filter material 120 successively or simultaneously, and the alkaline water formed by the alkaline filter material 120 is soaked in the zinc-containing filter material 110; the zinc-containing filter material 110 and the alkaline filter material 120 can be arranged up and down, such as Figure 2 The zinc-containing filter material 110 and the alkaline filter material 120 can also be arranged inside and outside (outside and inside), such as Figure 3 shown.

[0063] Alternatively, the zinc-containing filter material 110 and the alkaline filter material 120 are designed to be in different filter cavities, the water flow is designed to pass through the zinc-containing filter material 110 and the alkaline filter material 120 successively, and the alkaline water body is designed to enter the filter cavity of the zinc-containing filter material 110 when the water flow stops. The pH value of the alkaline water body can be 7.8 to 8.8. Optionally, the pH value of the alkaline water soaking the zinc-containing filter material 110 is designed to be 8.0 to 8.5, and the pH value of the alkaline water can be a suitable number such as 8.1, 8.2, 8.3 or 8.4. In the present embodiment, the pH value of the alkaline water soaking the zinc-containing filter material 110 is 8.3. In specific applications, the filter cavity of the filter element or the upstream and downstream pipelines can be designed with sensors for obtaining the pH value of the relevant waterway / filter cavity to facilitate the control of the pH value.

[0064] Zinc-containing filter material 110 Taking smithsonite as an example, the dissolution reaction of smithsonite in water is: ZnCO 3 =Zn 2+ +CO 3 2- .

[0065] When the inlet water (pure water) quality remains unchanged (PH = 7), Zn 2+ The saturated solubility of Zn in water can reach 6.0 mg / L, far exceeding the national standard limit of 1.0 mg / L. 2+ and CO 3 2- is precipitated synchronously, CO 3 2- The concentration of Zn can be controlled at the lowest level. 2+ The saturated precipitation concentration is controlled at the lowest level; 2 CO 3 -HCO 3 - -CO 3 2- Equilibrium diagram in water ( Figure 1 ) shows the effect of different alkaline water pH values ​​on the zinc concentration in the soaking water. When the pH value is around 8.3, CO 3 2- The concentration of Zn 2+ The immersion water concentration is also at the lowest level, theoretically calculated to be 0.36 mg / L, which meets the standard limit.

[0066] The alkaline filter material 120 includes mineral materials that can adjust the pH value of water quality, such as calcite, aragonite, magnesite, dolomite and other materials. According to the interaction strength between different mineral materials and pure water, when the pH value of the influent water is adjusted to about 8.3, Zn 2+ The concentration is precisely controlled between 0.2-1.0 mg / L.

[0067] The present invention also provides a filter element, such as Figure 2 and Figure 3 As shown, it includes a zinc-containing filter material 110 and an alkaline filter material 120, and the zinc-containing filter material 110 and the alkaline filter material 120 are integrally formed; or, the zinc-containing filter material 110 and the alkaline filter material 120 are separately formed and fixedly connected; or, the zinc-containing filter material 110 and the alkaline filter material 120 are separately arranged in different filter cavities and are interconnected.

[0068] Specifically, the zinc-containing filter material 110 and the alkaline filter material 120 are mixed and formed into a filter body.

[0069] Alternatively, the zinc-containing filter material 110 and the alkaline filter material 120 are integrally formed into a filter body along a set direction (refer to Figure 2 The zinc-containing filter material 110 and the alkaline filter material 120 can be integrally formed along the axial direction or radial direction.

[0070] Alternatively, the zinc-containing filter material 110 and the alkaline filter material 120 are separately formed and assembled to form a filter body, and the zinc-containing filter material 110 and the alkaline filter material 120 can be arranged in the axial direction or the radial direction.

[0071] In a specific application, the zinc-containing filter material 110 can be disposed at one end or the outside of the filter body, and the alkaline filter material 120 can be disposed at the other end or the inside of the filter body.

[0072] Specifically, the zinc-containing filter material 110 and the alkaline filter material 120 are columnar or cylindrical, and the zinc-containing filter material 110 and the alkaline filter material 120 are integrally formed or separately formed and fixedly connected along the axial direction to form a filter body; the zinc-containing filter material 110 and the alkaline filter material 120 are integrally formed inside and outside or separately formed and fixedly connected to form a filter body. In specific applications, the zinc-containing filter material 110 and the alkaline filter material 120 are integrally formed inside and outside or outside and inside or separately connected.

[0073] The present invention also provides a method for preparing a filter element, which is used to prepare the above-mentioned filter element, wherein the zinc-containing filter material 110 includes zinc-containing ore, flux and pore-forming agent;

[0074] The preparation method comprises the following steps:

[0075] The zinc-containing ore is crushed and mixed with a flux and a pore-forming agent to obtain a mixed material;

[0076] Placing the mixed material in a calcining device and calcining at a set temperature for a set time;

[0077] The calcined mixed material is prepared and formed into a zinc-containing filter body.

[0078] Optionally, in the zinc-containing filter material 110, the mass proportion of the flux is 0.5%-2%, the mass proportion of the pore-forming agent is 1%-3%, and the rest is zinc-containing ore;

[0079] The zinc-containing ore includes at least one of smithsonite, calamine and hydrozincite;

[0080] The flux comprises at least one of sodium chloride, potassium chloride, sodium nitrate, potassium nitrate and sodium phosphate;

[0081] The pore former includes at least one of sodium bicarbonate and ammonium bicarbonate.

[0082] Optionally, the mixed material is placed in a calcination device at a calcination temperature of 600 to 1000 degrees Celsius; in a specific application, the calcination temperature is 700 to 900 degrees Celsius.

[0083] The mixed material can be calcined in the calcination equipment for 2 to 6 hours or 2 to 4 hours.

[0084] Optionally, the alkaline filter material 120 can be a carbon rod filter material, a carbon fiber filter material, a carbon particle filter material or a ceramic filter material as a carrier and connected to the zinc-containing filter body. In some embodiments, the alkaline filter material 120 and the zinc-containing filter material 110 can be integrated in the same carbon rod filter material. For example, the upper half of the carbon rod filter material is the zinc-containing filter material 110 in the form of a carbon rod, and the lower half is the alkaline filter material 120 in the form of a carbon rod. That is, the filter element as a whole can be in the shape of a carbon rod. Of course, the alkaline filter material 120 and the zinc-containing filter material 110 can also use different carriers. For example, the alkaline filter material 120 can use a carbon particle filter material, and the zinc-containing filter material 110 can use a cylindrical carbon rod filter material or a carbon fiber filter material or a ceramic filter material.

[0085] Optionally, the forming of the alkaline filter material 120 includes the following steps:

[0086] Raw material acquisition steps: obtain alkaline ore as raw material;

[0087] Cleaning and drying steps: cleaning and drying the alkaline ore;

[0088] Crushing step: crush the alkaline ore to a set mesh size;

[0089] Impurity removal step: removing impurities from the alkaline ore to obtain alkaline ore powder;

[0090] Forming step: the alkaline ore powder after impurity removal is mixed with the carrier powder according to a set mass ratio and then formed into an alkaline filter body (alkaline filter material 120).

[0091] In this embodiment, taking modified smithsonite as an example, the proportion (mass ratio) of flux is 0.5%-2%, the proportion (mass ratio) of pore former is 1%-3%, and the high-temperature calcination temperature ranges from 700°C to 900°C.

[0092] Table 1: The influence of different fluxes on the zinc concentration in effluent when the pore-forming agent accounts for 2% and the high-temperature calcination temperature is 800℃

[0093]

[0094] Table 2: Effect of different pore-forming agents on zinc concentration in effluent when the solvent ratio is 1.0% and the high temperature calcination temperature is 800℃

[0095]

[0096] Table 3: Modified smithsonite with 2% pore former and 1.0% solvent, calcined at different temperatures

[0097]

[0098]

[0099] It can be seen that the filter element prepared by the preparation method used in this embodiment can stably and permanently dissolve zinc elements within a set range, so that the zinc concentration of drinking water meets national standards, and the filter element has a long service life and a good user experience.

[0100] Table 4 shows the effect of soaking at different pH values ​​on zinc concentration. The modified smithsonite with a pore-forming agent ratio of 2% and a solvent ratio of 1.0% was selected, and the instantaneous zinc concentration of the flow water at a flow rate of 1000L and the zinc concentration of the soaking water after soaking for 12 hours were recorded to obtain Table 4.

[0101] Table 4

[0102] Soaking water pH Zinc concentration in flow water (mg / L) Zinc concentration in soaking water (mg / L) 6.0 0.96 5.74 7.2 0.77 1.15 8.0 0.52 0.46 8.3 0.5 0.38 8.5 0.48 0.35 9.0 0.17 0.10

[0103] It can be seen that when the pH of the soaking water is 6, the zinc precipitation of the flow water and the soaking water is not inhibited, and the zinc concentration of the soaking water is high, exceeding the standard limit. When the pH of the soaking water is 7.2, the zinc concentration of the soaking water still exceeds the standard. When the pH of the soaking water is between 8.0 and 8.5, CO 3 2 - concentration is at its lowest level, when Zn 2+ The concentration of soaking water is also at the lowest level, between 0.2-1.0 mg / L, which meets the standard. When the pH of soaking water is 9.0, the alkalinity of alkaline substances is relatively strong, and the precipitation of zinc is excessively suppressed during the flow. The zinc concentration of the flow and soaking water is lower than 0.2 mg / L, which does not meet the standard.

[0104] The present invention also provides a filter cartridge, such as Figure 4As shown, it includes a cartridge 300, in which the filter element is arranged. When water flows, it flows through the zinc-containing filter material 110 and the alkaline filter material 120 successively or simultaneously. The alkaline filter material 120 can make the pH value of the water body weakly alkaline (preferably about pH 8.3). When the water flow stops, the zinc-containing filter material 110 is immersed in the alkaline water body to inhibit excessive dissolution of zinc in the zinc-containing filter material 110, thereby preventing the zinc concentration from exceeding the set standard.

[0105] Specifically, a filter cavity is provided in the cartridge shell 300, and the zinc-containing filter material 110 and the alkaline filter material 120 are provided in the same filter cavity; during normal flow, pure water (water filtered by RO membrane) continuously enters the filter cavity, and the zinc element in the zinc-containing filter material 110 can be dissolved normally. When water production is stopped, pure water stops entering the filter cavity, and the alkaline filter material 120 makes the water in the filter cavity (weakly) alkaline. The zinc-containing filter material 110 is soaked in alkaline water, and the zinc-containing filter element can be prevented from dissolving beyond the limit in the soaking state. In this way, it can provide zinc-rich drinking water that meets the standard, and solve the technical problem that the zinc-containing filter material 110 is easy to dissolve beyond the limit during soaking, preventing users from drinking water with excessive zinc content and having a negative impact on their health.

[0106] Alternatively, a first filter chamber and a second filter chamber are provided in the cartridge shell 300, the first filter chamber and the second filter chamber are connected through a channel, the zinc-containing filter material 110 is provided in the first filter chamber, and the alkaline filter material 120 is provided in the second filter chamber. Since the second filter chamber is connected to the first filter chamber, when water production is stopped, the alkaline filter material 120 in the second filter chamber can make the water in the first filter chamber alkaline. In some embodiments, a reflux valve can also be provided to allow the alkaline water in the second filter chamber to enter and replace the water in the first filter chamber, so that the zinc-containing filter material 110 is fully soaked in the alkaline water.

[0107] Optionally, the zinc-containing filter material 110 and the alkaline filter material 120 are successively arranged in the cartridge shell 300 along the water flow direction in the filter cartridge to avoid inhibiting the normal dissolution of the zinc element during overflow.

[0108] The present invention also provides a water system, including a pure water inlet pipe 210 and a mineralized water outlet pipe 220, wherein the above-mentioned filter element is arranged between the pure water inlet pipe 210 and the mineralized water outlet pipe 220, and the zinc-containing filter material 110 and the alkaline filter material 120 are arranged in the water system along the direction from the pure water inlet pipe 210 to the mineralized water outlet pipe 220. Through the combined application of the zinc-containing filter material 110 and the alkaline filter material 120 in the water system, the zinc-containing filter material 110 can normally dissolve the zinc element when water is flowing, and the alkaline water body provided by the alkaline filter material 120 can be used to soak the zinc-containing filter material 110 in the alkaline water body, which has an inhibitory effect on the dissolution of the zinc element, and can avoid the dissolution of the zinc-containing filter element exceeding the limit.

[0109] Optionally, the water system has a filter element installation cavity, the zinc-containing filter material 110 and the alkaline filter material 120 are arranged in the same filter element installation cavity, and the pure water inlet pipe 210 and the mineralized water outlet pipe 220 are connected to the filter element installation cavity; or, the water system includes a zinc-mineralized waterway, along the direction of the preset water flow of the zinc-mineralized waterway, the zinc-containing filter material 110 and the alkaline filter material 120 are successively arranged in the zinc-mineralized waterway. In some optional schemes, the zinc-mineralized waterway can be provided with a reflux pump or a two-way pump, which can guide the alkaline water body to the zinc-containing filter material 110, so that the alkaline water can soak the zinc-containing filter material 110. In some optional schemes, the zinc-containing filter material 110 and the alkaline filter material 120 are arranged in different filter chambers, and the zinc mineralized water circuit is connected to a reflux pipeline for selectively returning the alkaline water body formed by the alkaline filter material 120 to the filter chamber of the zinc-containing filter material 110, which can effectively prevent the dissolution of zinc in the zinc-containing filter material 110 from exceeding the standard.

[0110] Optionally, the water channel system further includes a pure water channel, which is arranged in parallel with the alkaline water channel, and two ends of the pure water channel are respectively connected to the pure water inlet pipe 210 and the mineralized water outlet pipe 220.

[0111] Optionally, refer to Figure 5 As shown, the water system includes a zinc-mineralized water channel 310 and an alkaline water channel 320, and the zinc-mineralized water channel 310 and the alkaline water channel 320 are connected in parallel between the pure water inlet pipe 210 and the mineralized water outlet pipe 220; the zinc-mineralized water channel 310 is provided with the zinc-containing filter material 110, and the zinc-mineralized water channel control valve 311 is provided upstream of the zinc-containing filter material 110, and the alkaline water channel 320 is provided with the alkaline filter material 120 , the alkaline water channel 320 is provided with an alkaline water control valve 122 downstream of the alkaline filter material 120; the water channel system also includes an inhibition water channel 330, one end of the inhibition water channel 330 is connected between the downstream of the alkaline filter material 120 and the alkaline water control valve 122, and the other end of the inhibition water channel 330 is connected between the upstream of the zinc-containing filter material 110 and the zinc mineralization water channel control valve 311, and the inhibition water channel 330 is provided with a switching control valve 331. By switching the control valve 331, the alkaline water of the inhibition water channel 330 can be selectively introduced into the zinc mineralization water channel 310 and flow to the zinc-containing filter material 110, so that the alkaline water can soak the zinc-containing filter material 110. The zinc mineralization water channel 310 and the alkaline water channel 320 can be connected with a control valve. The zinc mineralized water channel 310 and the alkaline water channel 320 can produce water separately or simultaneously, and the user can choose zinc mineralized water or weak alkaline water or mixed water (zinc mineralized water mixed with weak alkaline water). The alkaline water channel 320 can be provided with a sensor such as a pH value sensor for obtaining a pH value.

[0112] The present invention also provides a mineral spring mineralization water purifier, which is provided with the above-mentioned water system or the above-mentioned filter cartridge and filter element. The alkaline filter material 120 can make the pH value of the water body weakly alkaline. When the water flow stops, the zinc-containing filter material 110 is immersed in the alkaline water body to inhibit the excessive dissolution of zinc in the zinc-containing filter material 110, thereby fundamentally preventing the human body from drinking water with excessive zinc concentration.

[0113] Optionally, the mineral spring mineralized water purifier has a mineralized water path that flows through the zinc-containing filter material 110 and the alkaline filter material 120 in sequence, and the mineral spring mineralized water purifier also has a pure water path, the pure water path is arranged in parallel with the mineralized water path, and the mineralized water path and the pure water path are connected with a flow control valve. By connecting the pure water path and the mineralized water path in parallel and through the flow control valve, the zinc-containing water body and the pure water can be mixed in proportion, and different drinking water can be prepared according to user needs, and the user experience is better.

[0114] Optionally, the mineralized water channel is provided with a first sensor for obtaining a pH value of the mineralized water channel, and / or the mineralized water channel is provided with a second sensor for obtaining a TDS value of the mineralized water channel. The first sensor may be a pH sensor, etc. The second sensor may be a TDS sensor.

[0115] Optionally, the mineral spring mineralized water purifier has a control component, the first sensor and the second sensor are connected to the control component, the flow control valve is connected to the control component, and the control component is used to adjust the flow control valve according to the pH value and / or TDS value of the mineralized water channel, control the flow of the mineralized water channel and the pure water channel, so that the water output of the mineral spring mineralized water purifier meets the preset standard, that is, according to the set concentration requirement or pH value, adjust and control the water flow through the zinc-containing filter material 110 and the alkaline filter material 120, and can mix the pure water in an appropriate proportion to obtain the required drinking water. When the water output stops, the zinc-containing filter material 110 can be soaked in the alkaline water formed by the alkaline filter material 120 to inhibit the excessive dissolution of the zinc element.

[0116] The present invention provides a filter element and its design, preparation method, filter cartridge, water system and mineralized water purifier. Through the configuration, the zinc-containing filter material 110 can normally dissolve the zinc element when flowing through. The alkaline water provided by the alkaline filter material 120 utilizes the inhibitory effect of the alkaline water on the dissolution of the zinc element. The zinc-containing filter material 110 is soaked in alkaline water, and the dissolution of the zinc-containing filter element exceeding the limit can be avoided in the soaking state. In this way, it can provide zinc-rich drinking water that meets the standard, and solve the technical problem that the zinc-containing filter material 110 is easy to dissolve beyond the limit during soaking, thereby preventing users from drinking water containing excessive zinc and having a negative impact on their health.

[0117] 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: A zinc-containing filter material and an alkaline filter material are designed, and water is designed to flow through the zinc-containing filter material and the alkaline filter material successively or simultaneously when the water flow is flowing. When the water flow stops, the zinc-containing filter material is designed to be immersed in alkaline water to inhibit excessive dissolution of zinc in the zinc-containing filter material.

2. The design method according to claim 1, characterized in that: The zinc-containing filter material and the alkaline filter material are designed to be in the same filter cavity, and the water flow is designed to pass through the zinc-containing filter material and the alkaline filter material successively or simultaneously, and the alkaline water formed by the alkaline filter material is soaked in the zinc-containing filter material; Alternatively, the zinc-containing filter material and the alkaline filter material are designed to be in different filter cavities, the water flow is designed to pass through the zinc-containing filter material and the alkaline filter material successively, and the alkaline water is designed to enter the filter cavity of the zinc-containing filter material when the water flow stops.

3. The design method according to claim 1, characterized in that: The pH value of the alkaline water used to soak the zinc-containing filter material is designed to be between 8.0 and 8.

5.

4. A filter element, characterized in that: It comprises a zinc-containing filter material and an alkaline filter material, wherein the zinc-containing filter material and the alkaline filter material are integrally formed; or, the zinc-containing filter material and the alkaline filter material are separately formed and fixedly connected; or, the zinc-containing filter material and the alkaline filter material are separately arranged in different filter cavities and are interconnected.

5. A filter element as claimed in claim 4, characterized in that: The zinc-containing filter material and the alkaline filter material are mixed and formed into a filter body; Alternatively, the zinc-containing filter material and the alkaline filter material are integrally formed into a filter body along a set direction; Alternatively, the zinc-containing filter material and the alkaline filter material are formed separately and assembled to form a filter body.

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

7. A method for preparing a filter element, characterized in that: Used for preparing a filter element as claimed in any one of claims 4 to 6, wherein the zinc-containing filter material comprises a zinc-containing ore, a flux and a pore-forming agent; The preparation method comprises the following steps: The zinc-containing ore is crushed and mixed with a flux and a pore-forming agent to obtain a mixed material; Placing the mixed material in a calcining device and calcining at a set temperature for a set time; The calcined mixed material is prepared and formed into a zinc-containing filter body.

8. The method for preparing a filter element according to claim 7, characterized in that: In the zinc-containing filter material, the mass proportion of the flux is 0.5%-2%, the mass proportion of the pore-forming agent is 1%-3%, and the rest is zinc-containing ore; The zinc-containing ore includes at least one of smithsonite, calamine and hydrozincite; The flux comprises at least one of sodium chloride, potassium chloride, sodium nitrate, potassium nitrate and sodium phosphate; The pore former includes at least one of sodium bicarbonate and ammonium bicarbonate.

9. The method for preparing a filter element according to claim 7, characterized in that: Placing the mixed material in a calcination device at a calcination temperature of 600 to 1000 degrees Celsius; The calcination time is 2 to 4 hours.

10. The method for preparing a filter element according to claim 7, characterized in that: The alkaline filter material uses carbon rod filter material, carbon fiber filter material, carbon particle filter material or ceramic filter material as a carrier and is connected to the zinc-containing filter body.

11. A method for preparing a filter element according to any one of claims 7 to 10, characterized in that: The forming of the alkaline filter material comprises the following steps: Raw material acquisition steps: obtain alkaline ore as raw material; Cleaning and drying steps: cleaning and drying the alkaline ore; Crushing step: crush the alkaline ore to a set mesh size; Impurity removal step: removing impurities from the alkaline ore to obtain alkaline ore powder; Forming step: the alkaline ore powder after impurity removal is mixed with the carrier powder according to a set mass ratio and then formed into an alkaline filter body.

12. A filter cartridge, characterized in that: It comprises a cartridge shell, in which a filter element as claimed in any one of claims 4 to 6 is arranged.

13. A filter cartridge according to claim 12, characterized in that: A filter cavity is arranged in the cylindrical shell, and the zinc-containing filter material and the alkaline filter material are arranged in the same filter cavity; Alternatively, a first filter chamber and a second filter chamber are disposed in the cartridge shell, the first filter chamber and the second filter chamber are connected via a channel, the zinc-containing filter material is disposed in the first filter chamber, and the alkaline filter material is disposed in the second filter chamber.

14. A filter cartridge according to claim 12, characterized in that: The zinc-containing filter material and the alkaline filter material are arranged in the cartridge shell in sequence along the water flow direction in the filter cartridge.

15. A water system, comprising a pure water inlet pipe and a mineralized water outlet pipe, characterized in that: A filter element as claimed in any one of claims 4 to 6 is arranged between the pure water inlet pipe and the mineralized water outlet pipe, and the zinc-containing filter material and the alkaline filter material are arranged in the water system along the direction from the pure water inlet pipe to the mineralized water outlet pipe.

16. A waterway system according to claim 15, characterized in that: The water system has a filter element installation cavity, the zinc-containing filter material and the alkaline filter material are arranged in the same filter element installation cavity, and the pure water inlet pipe and the mineralized water outlet pipe are connected to the filter element installation cavity; Alternatively, the water channel system includes a zinc-mineralized water channel, along which a water flow direction is preset, and the zinc-containing filter material and the alkaline filter material are successively arranged in the zinc-mineralized water channel.

17. A waterway system according to claim 16, characterized in that: The zinc-containing filter material and the alkaline filter material are arranged in different filter chambers, and the zinc-mineralized water channel is connected with a reflux pipeline for selectively returning the alkaline water body formed by the alkaline filter material to the filter chamber of the zinc-containing filter material.

18. A waterway system according to claim 16, characterized in that: The water system also includes a pure water channel, which is arranged in parallel with the zinc mineralization water channel, and the two ends of the pure water channel are respectively connected to the pure water inlet pipe and the mineralized water outlet pipe.

19. A waterway system according to claim 15, characterized in that: The water system includes a zinc-mineralized water channel and an alkaline water channel, and the zinc-mineralized water channel and the alkaline water channel are connected in parallel between the pure water inlet pipe and the mineralized water outlet pipe; the zinc-mineralized water channel is provided with the zinc-containing filter material, and the alkaline water channel is provided with the alkaline filter material; The water channel system further includes an inhibition water channel, one end of which is connected to the downstream of the alkaline filter material, and the other end of which is connected to the upstream of the zinc-containing filter material. The inhibition water channel is provided with a switching control valve.

20. A mineral water purifier, characterized in that: The mineral spring mineralized water purifier is provided with a water system as described in any one of claims 15 to 19.

21. The mineral water purifier according to claim 19, characterized in that: The mineral spring mineralized water purifier has a mineralized water path that flows through the zinc-containing filter material and the alkaline filter material in sequence. The mineral spring mineralized water purifier also has a pure water path that is arranged in parallel with the mineralized water path. The mineralized water path and the pure water path are connected to a flow control valve.

22. A mineral water purifier according to claim 21, characterized in that: The mineralized water channel is provided with a first sensor for obtaining a pH value of the mineralized water channel, and / or the mineralized water channel is provided with a second sensor for obtaining a TDS value of the mineralized water channel.

23. A mineral water purifier according to claim 22, characterized in that: The mineral spring mineralized water purifier has a control component, the first sensor and the second sensor are connected to the control component, and the flow control valve is connected to the control component. The control component is used to adjust the flow control valve according to the pH value and / or TDS value of the mineralized water channel, control the flow of the mineralized water channel and the pure water channel, so that the water output of the mineral spring mineralized water purifier meets the preset standards.

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