Coating sintered electrode and preparation method thereof

Abstract

The embodiment of the invention discloses a coated sintered electrode and a preparation method of the coated sintered electrode. According to one specific embodiment, the coated sintered electrode applied to the contact lens cleaning device comprises a conductive substrate which is a pure titanium substrate; the exterior of the conductive substrate is coated with a metal coating, and the metal coating comprises at least one of platinum metal, ruthenium metal, platinum metal oxide and ruthenium metal oxide; and the metal coating is coated on the surface of the conductive base material in a sintering manner. The coating sintering electrode applied to the contact lens cleaning device has a better cleaning effect on the contact lens, so that the damage to the cornea of a user can be reduced.

Description

Technical Field

[0001] Embodiments of the present disclosure relate to the field of contact lens cleaning, and more particularly to a coated sintered electrode and a method for preparing the coated sintered electrode. Background Art

[0002] Contact lenses refer to lenses worn on the cornea of the eye to correct vision or protect the eyes. After wearing contact lenses, they need to be cleaned and then soaked in a care solution for care. Currently, when cleaning contact lenses, the commonly used method is to use electrophoresis to separate the adhesions on the contact lenses. The electrodes used in the electrophoresis method often use copper-clad steel as the conductive substrate, and silver or other transition metals such as iron are plated on the surface of the conductive substrate by electroplating or other methods.

[0003] However, the inventors have found that when using the above cleaning method to clean contact lenses, the following technical problems often occur:

[0004] The electroplated layer of the electroplating method can only electroplate metals, and metal oxides cannot be electroplated on the conductive substrate. Moreover, an electrode prepared by using copper-clad steel as the conductive substrate and plating silver or other transition metals such as iron on the surface by electroplating is usually electrolytically oxidized and corroded to produce metal oxides during use as an anode. The generated metal oxides will contaminate the contact lenses, resulting in poor cleaning effect and serious damage to the user's cornea after long-term use.

[0005] The above information disclosed in this background art section is only used to enhance the understanding of the background of the inventive concept, and thus, it may include information that does not form the prior art known to those of ordinary skill in the art in this country. Summary of the Invention

[0006] This content part of the present disclosure is used to briefly introduce the concepts, which will be described in detail in the following detailed implementation part. This content part of the present disclosure is not intended to identify the key features or essential features of the claimed technical solution, nor is it intended to limit the scope of the claimed technical solution.

[0007] Some embodiments of the present disclosure propose a coated sintered electrode and a method for preparing the coated sintered electrode applied to a contact lens cleaning device to solve one or more of the technical problems mentioned in the above background art section.

[0008] In a first aspect, some embodiments of the present disclosure provide a coated sintered electrode for a contact lens cleaning device. The coated sintered electrode includes: a conductive substrate, where the conductive substrate is a pure titanium substrate; a metal coating is applied to the outside of the conductive substrate, where the metal coating includes at least one of the following: platinum metal, ruthenium metal, platinum metal oxide, and ruthenium metal oxide; the metal coating is applied to the surface of the conductive substrate by sintering.

[0009] Optionally, the shape of the conductive substrate is a stepped cylindrical shape.

[0010] Optionally, the diameter of the smallest part of the conductive substrate is 1.3 millimeters, and the thickness of the metal coating is 0.05 millimeters.

[0011] In a second aspect, some embodiments of the present disclosure provide a method for preparing a coated sintered electrode, which is used to prepare the coated sintered electrode for a contact lens cleaning device as described in the first aspect. The method includes: mixing various metal powders, various metal oxide powders, and a conductive additive to obtain a metal mixture; kneading the metal mixture to obtain a kneaded metal mixture; applying the kneaded metal mixture to the surface of a pure titanium substrate to obtain a coated electrode; shaping the coated electrode to obtain a shaped electrode; sintering the shaped electrode to obtain a sintered electrode; and post-treating the sintered electrode to obtain the coated sintered electrode.

[0012] Optionally, the mixing various metal powders, various metal oxide powders, and a conductive additive to obtain a metal mixture includes: stirring the various metal powders, various metal oxide powders, and the conductive additive by a stirring mixer to obtain a metal mixture.

[0013] Optionally, the kneading the metal mixture to obtain a kneaded metal mixture includes: kneading the metal mixture by a kneader to obtain a kneaded metal mixture, where the set temperature range of the kneader is 350°C to 450°C, and the set pressure range of the kneader is 0.4 Mpa to 1 Mpa.

[0014] Optionally, the shaping the coated electrode to obtain a shaped electrode includes: shaping the coated electrode by a vacuum drying furnace to obtain a shaped electrode, where the set temperature range of the vacuum dryer is 50°C to 150°C, and the set vacuum degree range of the vacuum dryer is 0 Mpa to 0.1 Mpa.

[0015] Optionally, the above-mentioned formed electrode is sintered to obtain a sintered electrode, including: heating the above-mentioned formed electrode through a sintering furnace to obtain a heated formed electrode; cooling the above-mentioned heated formed electrode to obtain a cooled electrode; and determining the above-mentioned cooled electrode as the sintered electrode.

[0016] Optionally, the above-mentioned sintered electrode is post-treated to obtain a coated sintered electrode, including: heat-treating the above-mentioned sintered electrode to obtain a heat-treated electrode; cleaning the above-mentioned heat-treated electrode to obtain a cleaned electrode; drying the above-mentioned cleaned electrode to obtain a dried electrode; and determining the above-mentioned dried electrode as the coated sintered electrode.

[0017] Optionally, the above-mentioned sintered electrode is heat-treated to obtain a heat-treated electrode, including normalizing the above-mentioned sintered electrode to obtain a heat-treated electrode.

[0018] The above-mentioned various embodiments of the present disclosure have the following beneficial effects: The cleaning effect of contact lenses by the coated sintered electrode applied in some embodiments of the present disclosure is better, thereby reducing the damage to the user's cornea. Specifically, the reason for the relatively serious damage to the user's cornea is that: the plating layer of the electroplating method can only electroplate metals, and metal oxides cannot be electroplated on the conductive substrate. Moreover, an electrode prepared by electroplating a transition metal such as silver or iron on the surface with copper-clad steel as the conductive substrate will usually be electrolytically oxidized and corroded to produce metal oxides during the use as an anode, and the generated metal oxides will contaminate the contact lenses, resulting in a poor cleaning effect. Based on this, the coated sintered electrode applied in some embodiments of the present disclosure includes: a conductive substrate, wherein the above-mentioned conductive substrate is a pure titanium substrate; a metal coating is coated on the outside of the above-mentioned conductive substrate, wherein the above-mentioned metal coating includes at least one of the following: platinum metal, ruthenium metal, platinum metal oxide, and ruthenium metal oxide; the above-mentioned metal coating is coated on the surface of the above-mentioned conductive substrate by a sintering method. Because when using a pure titanium substrate as the anode and coating the metal coating on the surface of the above-mentioned conductive substrate by a coating and sintering method, when the electrode is electrolyzed in the nursing solution, the surface of the electrode will quickly oxidize into titanium oxide and no longer conduct electricity, preventing the substrate from further oxidation reactions, thereby reducing the generation of metal oxides and further reducing the pollution of the contact lenses. And by the sintering method, metal oxides can also be coated on the surface of the conductive substrate, thereby forming a semiconductor on the surface of the electrode and further reducing corrosion. Thus, the cleaning effect of contact lenses by the coated sintered electrode applied in some embodiments of the present disclosure is better, thereby reducing the damage to the user's cornea. Description of the Drawings

[0019] In conjunction with the accompanying drawings and with reference to the following specific embodiments, the above and other features, advantages, and aspects of the various embodiments of the present disclosure will become more apparent. Throughout the drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic and that the elements and elements are not necessarily drawn to scale.

[0020] Figure 1 FIG. 4 is a schematic structural diagram of some embodiments of a coated sintered electrode applied to a contact lens cleaning device according to the present disclosure;

[0021] Figure 2 FIG. 8 is a flowchart of some embodiments of a method for preparing a coated sintered electrode according to the present disclosure. Specific Embodiments

[0022] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although some embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Instead, these embodiments are provided to more thoroughly and completely understand the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are for illustrative purposes only and are not used to limit the scope of protection of the present disclosure.

[0023] In addition, it should be noted that for the sake of convenience of description, only parts related to the relevant invention are shown in the drawings. Without conflict, the embodiments in the present disclosure and the features in the embodiments can be combined with each other.

[0024] It should be noted that the concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules, or units, and are not used to limit the order of functions performed by these devices, modules, or units or their interdependent relationships.

[0025] It should be noted that the modifications of "one" and "multiple" mentioned in the present disclosure are illustrative rather than restrictive. Those skilled in the art should understand that unless otherwise clearly specified in the context, it should be understood as "one or more".

[0026] The names of the messages or information exchanged between multiple devices in the embodiments of the present disclosure are only for illustrative purposes and are not used to limit the scope of these messages or information.

[0027] The present disclosure will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0028] Figure 1 FIG. 32 is a schematic structural diagram of some embodiments of a coated sintered electrode applied to a contact lens cleaning device according to the present disclosure.

[0029] In some embodiments, the above-mentioned coated sintered electrode may include a conductive substrate. Among them, the above-mentioned conductive substrate may be a pure titanium substrate. Thus, when using a pure titanium substrate as the anode, during use, the surface of the pure titanium substrate will quickly oxidize into titanium oxide and no longer conduct electricity, preventing further oxidation reactions of the substrate, and the surface coating plays a role in conducting electricity. Moreover, the pure titanium substrate has the advantages of no cracking or delamination, a longer service life, and a stronger ability to adjust the required electrochemical properties.

[0030] In some embodiments, a metal coating may be coated on the outside of the above-mentioned conductive substrate. Among them, the above-mentioned metal coating may include at least one of the following: platinum metal, ruthenium metal, platinum metal oxide, and ruthenium metal oxide. It can be understood that the corresponding metal materials in the above-mentioned metal coating may include, but are not limited to, at least one of the following: platinum metal, ruthenium metal, platinum metal oxide, and ruthenium metal oxide. Thus, the addition of ruthenium elements can cause the electrode to catalyze the reaction to produce sodium hypochlorite during electrolysis in a contact lens care solution mainly composed of sodium chloride solution. At the same time, in practice, during electrolysis, due to electrophoresis, the amino acid residues in the protein molecules detached from the contact lens can react with sodium hypochlorite to produce hypochlorous acid and derivatives of amino acids. Hypochlorous acid then reacts with another amino acid residue in the protein molecule to produce chloroamino acids. The chloroamino acid molecules further decompose to produce various end products, such as nitrogen, hydrogen chloride, and carbon dioxide, etc., to disinfect, wash, and decompose proteins on the contact lens.

[0031] In some embodiments, the above-mentioned metal coating may be coated on the surface of the above-mentioned conductive substrate by sintering. The specific sintering method may refer to the preparation method of the coated sintered electrode.

[0032] Optionally, the shape of the above-mentioned conductive substrate may be a stepped cylindrical shape. Specifically, the above-mentioned conductive substrate may be divided into three sections. And the diameters of the three sections of the above-mentioned conductive substrate decrease in sequence. The surface of the above-mentioned conductive substrate is smooth and burr-free. The above-mentioned conductive substrate can work as an anode. The above-mentioned conductive substrate can also work as a cathode. In the working state, the above-mentioned conductive substrate can be inverted every 60 seconds. The above-mentioned conductive substrate can be placed in physiological saline with an electrolyte content of 0.9% (i.e., 9 g / L sodium chloride solution) to work.

[0033] Optionally, the diameter of the smallest part of the above-mentioned conductive substrate can be 1.3 mm, and the thickness of the above-mentioned metal coating can be 0.05 mm. Specifically, the diameter of the middle part of the above-mentioned conductive substrate can be 1.50 ± 0.03 mm. The height of the middle part of the above-mentioned conductive substrate can be 3.7 mm. The diameter of the smallest part of the above-mentioned conductive substrate can be 1.3 ± 0.02 mm. The height of the smallest part of the above-mentioned conductive substrate can be 4.8 mm. The diameter of the largest part of the above-mentioned conductive substrate can be 2.5 ± 0.05 mm. The height of the largest part of the above-mentioned conductive substrate can be 2.5 mm. A chamfer with an angle of 0.05° is provided at the top of the smallest part of the above-mentioned conductive substrate.

[0034] The above-mentioned various embodiments of the present disclosure have the following beneficial effects: Through the application of the coating sintering electrode of some embodiments of the present disclosure to the contact lens cleaning device, the cleaning effect on contact lenses is better, thereby reducing the damage to the user's cornea. Specifically, the reason for the relatively serious damage to the user's cornea is as follows: The electroplating method can only electroplate metals, and metal oxides cannot be electroplated on the conductive substrate. And when using copper-clad steel as the conductive substrate and electroplating transition metals such as silver or iron on the surface by the electroplating method to prepare the electrode, during the process of using it as the anode, it is usually electrolytically oxidized and corroded to produce metal oxides, and the produced metal oxides will contaminate the contact lenses, resulting in a poor cleaning effect. Based on this, the coating sintering electrode of some embodiments of the present disclosure applied to the contact lens cleaning device includes: a conductive substrate, wherein the above-mentioned conductive substrate is a pure titanium substrate; a metal coating is coated on the outside of the above-mentioned conductive substrate, wherein the above-mentioned metal coating includes at least one of the following: platinum metal, ruthenium metal, platinum metal oxide, and ruthenium metal oxide; the above-mentioned metal coating is coated on the surface of the above-mentioned conductive substrate by a sintering method. Because when using a pure titanium substrate as the anode and applying the metal coating to the surface of the above-mentioned conductive substrate by means of coating and sintering, when the electrode is electrolyzed in the nursing solution, the surface of the electrode will quickly oxidize into titanium oxide and no longer conduct electricity, preventing further oxidation reaction of the substrate, thereby reducing the generation of metal oxides, and further reducing the contamination of the contact lenses. And by the sintering method, metal oxides can also be coated on the surface of the conductive substrate, thereby forming a semiconductor on the surface of the electrode and further reducing corrosion. Thus, through the application of the coating sintering electrode of some embodiments of the present disclosure to the contact lens cleaning device, the cleaning effect on contact lenses is better, thereby reducing the damage to the user's cornea.

[0035] Continue to refer to Figure 2 , which shows the process 200 of some embodiments of the coating sintering electrode preparation method according to the present disclosure. This coating sintering electrode preparation method includes the following steps:

[0036] Step 201: Mix various metal powders, various metal oxide powders, and a conductive additive to obtain a metal mixture.

[0037] In some embodiments, the execution entity of the coating sintered electrode preparation method (for example, process machinery and equipment, which may include: process robots, stirring mixers, kneaders, sintering furnaces, etc.) can mix various metal powders, various metal oxide powders, and a conductive additive to obtain a metal mixture. Among them, the above metal powders may include, but are not limited to, at least one of the following: platinum metal powder, ruthenium metal powder, platinum metal oxide powder, and ruthenium metal oxide powder. The size of the above metal powder particles can be in the nanometer range. The above conductive additive can be semiconductor powder.

[0038] In some optional implementation manners of some embodiments, the above execution entity can stir various metal powders, various metal oxide powders, and the conductive additive through a stirring mixer to obtain a metal mixture. Specifically, the above various metal powders, various metal oxide powders, and the conductive additive can be put into the above stirring mixer, and the above various metal powders, various metal oxide powders, and the conductive additive are stirred through the above stirring mixer to obtain a metal mixture.

[0039] Step 202: Knead the metal mixture to obtain a kneaded metal mixture.

[0040] In some embodiments, the above execution entity can knead the above metal mixture to obtain a kneaded metal mixture.

[0041] In some optional implementation manners of some embodiments, the above execution entity can knead the above metal mixture through a kneader to obtain a kneaded metal mixture. Among them, the set temperature range of the above kneader can be from 350°C to 450°C. The set pressure range of the above kneader is from 0.4 Mpa to 1 Mpa.

[0042] Step 203: Coat the kneaded metal mixture on the surface of a pure titanium substrate to obtain a coated electrode.

[0043] In some embodiments, the above execution entity can coat the above kneaded metal mixture on the surface of a pure titanium substrate to obtain a coated electrode. In practice, the above execution entity can brush the above kneaded metal mixture onto the surface of the above pure titanium substrate to obtain a coated electrode.

[0044] Step 204: Shape the coated electrode to obtain a shaped electrode.

[0045] In some embodiments, the above-mentioned execution entity may perform a shaping process on the coated electrode to obtain a shaped electrode.

[0046] In some alternative implementation manners of some embodiments, the above-mentioned execution entity may perform a shaping process on the coated electrode through a vacuum drying furnace to obtain a shaped electrode. Among them, the set temperature range of the above-mentioned vacuum dryer may be from 50°C to 150°C. The set vacuum degree range of the above-mentioned vacuum dryer is from 0 Mpa to 0.1 Mpa. In practice, the above-mentioned execution entity may place the coated electrode in the drying furnace and adjust the drying temperature and vacuum degree of the vacuum dryer to perform a shaping process on the coated electrode to obtain a shaped electrode.

[0047] Step 205: Perform a sintering process on the shaped electrode to obtain a sintered electrode.

[0048] In some embodiments, the above-mentioned execution entity may perform a sintering process on the shaped electrode to obtain a sintered electrode.

[0049] In some alternative implementation manners of some embodiments, the above-mentioned execution entity may perform a sintering process on the shaped electrode by performing the following steps to obtain a sintered electrode:

[0050] The first step: Heat the shaped electrode through a sintering furnace to obtain a heated shaped electrode. In practice, first, the above-mentioned execution entity may perform a preheating process on the shaped electrode through the sintering furnace. Then, when the temperature reaches a certain temperature, the above-mentioned execution entity may continuously heat at a certain temperature for a preset time for sintering to obtain a heated shaped electrode.

[0051] The second step: Cool the heated shaped electrode to obtain a cooled electrode. In practice, the above-mentioned execution entity may use natural cooling to cool the heated shaped electrode to obtain a cooled electrode.

[0052] The third step: Determine the cooled electrode as the sintered electrode.

[0053] Continuing, when performing the sintering process in the coated and sintered electrode preparation method adopting the present technical solution, there are further the following technical problems:

[0054] The cooling rate is one of the key factors affecting the sintering quality. The cooling process should be stable and uniform. However, in the existing cooling steps, the temperature of the cooling is not controlled, resulting in the temperature being prone to fluctuations during the cooling process, causing the electrode to crack.

[0055] In some alternative implementation manners of some embodiments, the above-mentioned execution entity may perform a cooling process on the heated shaped electrode by performing the following steps to obtain a cooled electrode:

[0056] First step, collect the real-time temperature in the above-mentioned sintering furnace through the associated temperature sensor. Among them, the above-mentioned associated temperature sensor can be a sensor communicatively connected to the main control module included in the process machine equipment. The above-mentioned temperature sensor can be arranged inside the above-mentioned sintering furnace.

[0057] Second step, obtain the historical temperature sequence corresponding to the above-mentioned sintering furnace within a historical time period. Among them, the above-mentioned historical time period can be the previous minute of the current time. In practice, the above-mentioned execution entity can obtain the historical temperature sequence corresponding to the above-mentioned sintering furnace within the historical time period from the storage module included in the process machine equipment.

[0058] Third step, determine the temperature difference between every two adjacent historical temperatures in the above-mentioned historical temperature sequence to obtain a temperature difference sequence. In practice, the above-mentioned execution entity can determine the absolute value of the difference between every two adjacent historical temperatures in the above-mentioned historical temperature sequence as the temperature difference.

[0059] Fourth step, determine the average value of each temperature difference in the above-mentioned temperature difference sequence as the average temperature difference.

[0060] Fifth step, determine the absolute value of the difference between the above-mentioned real-time temperature and the previous temperature as the real-time temperature difference. Among them, the above-mentioned previous temperature can be the temperature detected immediately before the current time. For example, if the temperature is detected every 2 seconds, the above-mentioned previous temperature can be the temperature detected 2 seconds before the current time.

[0061] Sixth step, in response to determining that the above-mentioned real-time temperature difference is less than the above-mentioned average temperature difference, collect the pressure value of the corresponding ventilation opening through each pressure sensor among the associated at least one pressure sensor.

[0062] Seventh step, in response to determining that the collected pressure values include a pressure value less than a preset pressure threshold, adjust the wind speed of the fan corresponding to the pressure value less than the above-mentioned preset pressure threshold among the collected pressure values. In practice, in response to determining that the collected pressure values include a pressure value less than a preset pressure threshold, the above-mentioned execution entity can increase the wind speed of the fan corresponding to the pressure value less than the above-mentioned preset pressure threshold among the collected pressure values.

[0063] The above first step to seventh step, as an inventive point of the embodiment of the present disclosure, solves the technical problem that "the cooling rate is one of the key factors affecting the sintering quality. The cooling process should be stable and uniform. However, in the existing cooling steps, the temperature of cooling is not controlled, resulting in easy temperature fluctuations during the cooling process and causing cracking of the electrode." The reasons for the electrode cracking are as follows: The cooling rate is one of the key factors affecting the sintering quality. The cooling process should be stable and uniform. However, in the existing cooling steps, the temperature of cooling is not controlled, resulting in easy temperature fluctuations during the cooling process. If the above factors are solved, the electrode cracking can be reduced. To achieve this effect, the present disclosure collects the current temperature and the historical temperature sequence within a historical time period, determines the magnitude of the average temperature difference in the historical temperature sequence and the real-time temperature difference corresponding to the current temperature, and when it is determined that the real-time temperature difference is less than the average temperature difference (i.e., the cooling rate slows down), the fan speed of the vent with low air pressure is increased, thereby accelerating the temperature reduction rate. Because when the cooling rate slows down, the speed of the vent fan can be increased, so that the temperature can be cooled faster when the cooling rate slows down and the temperature reduction can be kept gentle. Also, because the fan speed of the vent with low air pressure is increased, the air pressure of each vent is more average. Furthermore, the electrode can be cooled more evenly. Thus, the cooling process can be stable and uniform, temperature fluctuations can be reduced, and electrode cracking can be reduced.

[0064] Step 206, perform post-treatment on the sintered electrode to obtain a coated sintered electrode.

[0065] In some embodiments, the above execution subject can perform post-treatment on the above sintered electrode to obtain a coated sintered electrode.

[0066] In some optional implementation manners of some embodiments, the above execution subject can perform post-treatment on the above sintered electrode to obtain a coated sintered electrode by performing the following steps:

[0067] The first step, perform heat treatment on the above sintered electrode to obtain a heat-treated electrode.

[0068] In some optional implementation manners of some embodiments, the above execution subject can perform heat treatment on the above sintered electrode to obtain a heat-treated electrode by performing the following steps: Perform normalizing heat treatment on the above sintered electrode to obtain a heat-treated electrode.

[0069] The second step, perform cleaning treatment on the above heat-treated electrode to obtain a cleaned electrode. In practice, the above execution subject can perform cleaning treatment on the above heat-treated electrode through an ultrasonic cleaner to obtain a cleaned electrode.

[0070] In the third step, the above-mentioned cleaned electrode is dried to obtain a dried electrode. In practice, the above-mentioned execution subject can dry the above-mentioned cleaned electrode through an oven to obtain a dried electrode.

[0071] In the fourth step, the above-mentioned dried electrode is determined as a coated and sintered electrode.

[0072] The above-mentioned various embodiments of the present disclosure have the following beneficial effects: The coated and sintered electrode prepared by the method for preparing a coated and sintered electrode according to some embodiments of the present disclosure has a better cleaning effect on contact lenses, thereby reducing the damage to the user's cornea. Specifically, the reason for the relatively serious damage to the user's cornea is as follows: The plating layer of the electroplating method can only electroplate metals, and metal oxides cannot be electroplated on the conductive substrate. Moreover, an electrode prepared by electroplating a transition metal such as silver or iron on the surface with copper-clad steel as the conductive substrate will usually be electrolytically oxidized and corroded to generate metal oxides during the use as an anode, and the generated metal oxides will contaminate the contact lenses, resulting in a poor cleaning effect. Based on this, the method for preparing a coated and sintered electrode according to some embodiments of the present disclosure includes: mixing various metal powders, various metal oxide powders and a conductive additive to obtain a metal mixture; kneading the above-mentioned metal mixture to obtain a kneaded metal mixture; coating the above-mentioned kneaded metal mixture on the surface of a pure titanium substrate to obtain a coated electrode; performing a shaping process on the above-mentioned coated electrode to obtain a shaped electrode; performing a sintering process on the above-mentioned shaped electrode to obtain a sintered electrode; and performing a post-treatment on the above-mentioned sintered electrode to obtain a coated and sintered electrode. Because a pure titanium substrate is used as the anode, when the metal coating is coated on the surface of the above-mentioned conductive substrate by means of coating and sintering, when the electrode is electrolyzed by the nursing solution, the surface of the electrode will be quickly oxidized into titanium oxide and no longer conduct electricity, preventing the substrate from undergoing further oxidation reactions, thereby reducing the generation of metal oxides and further reducing the contamination of the contact lenses. And through the sintering method, metal oxides can also be coated on the surface of the conductive substrate, thereby forming a semiconductor on the surface of the electrode and further reducing corrosion. Thus, the coated and sintered electrode prepared by the method for preparing a coated and sintered electrode according to some embodiments of the present disclosure has a better cleaning effect on contact lenses, thereby reducing the damage to the user's cornea.

[0073] The above description is only some preferred embodiments of the present disclosure and an explanation of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, and should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the above-mentioned inventive concept. For example, the technical solutions formed by mutually replacing the above-mentioned features with the (but not limited to) technical features having similar functions disclosed in the embodiments of the present disclosure.

Claims

1. A coated sintered electrode for a contact lens cleaning device, comprising a conductive substrate, wherein, the conductive substrate is a pure titanium substrate; a metal coating is coated on the outside of the conductive substrate, wherein the metal coating includes at least one of the following: platinum metal, ruthenium metal, platinum metal oxide and ruthenium metal oxide; the metal coating is coated on the surface of the conductive substrate by sintering.

2. The coated sintered electrode for a contact lens cleaning device according to claim 1, wherein, the shape of the conductive substrate is a stepped cylinder.

3. The coated sintered electrode for a contact lens cleaning device according to claim 2, wherein, the diameter of the smallest part of the conductive substrate is 1.3 mm, and the thickness of the metal coating is 0.05 mm.

4. A method for preparing a coated sintered electrode, which is used to prepare the coated sintered electrode for a contact lens cleaning device according to any one of claims 1-3, the method comprises: mixing various metal powders, various metal oxide powders and a conductive additive to obtain a metal mixture; kneading the metal mixture to obtain a kneaded metal mixture; coating the kneaded metal mixture on the surface of a pure titanium substrate to obtain a coated electrode; forming the coated electrode to obtain a formed electrode; sintering the formed electrode to obtain a sintered electrode; performing post-treatment on the sintered electrode to obtain a coated sintered electrode.

5. The method according to claim 4, wherein, the mixing various metal powders, various metal oxide powders and a conductive additive to obtain a metal mixture includes: stirring the various metal powders, various metal oxide powders and the conductive additive by a stirring mixer to obtain a metal mixture.

6. The method according to claim 4, wherein, the kneading the metal mixture to obtain a kneaded metal mixture includes: kneading the metal mixture by a kneader to obtain a kneaded metal mixture, wherein the set temperature range of the kneader is 350°C to 450°C, and the set pressure range of the kneader is 0.4 Mpa to 1 Mpa.

7. The method according to claim 4, wherein, the forming the coated electrode to obtain a formed electrode includes: forming the coated electrode by a vacuum drying furnace to obtain a formed electrode, wherein the set temperature range of the vacuum dryer is 50°C to 150°C, and the set vacuum degree range of the vacuum dryer is 0 Mpa to 0.1 Mpa.

8. The method according to claim 4, wherein, the sintering the formed electrode to obtain a sintered electrode includes: heating the formed electrode by a sintering furnace to obtain a heated formed electrode; cooling the heated formed electrode to obtain a cooled electrode; determining the cooled electrode as the sintered electrode.

9. The method according to claim 4, wherein, the performing post-treatment on the sintered electrode to obtain a coated sintered electrode includes: The sintered electrode is heat-treated to obtain a heat-treated electrode; The heat-treated electrode is cleaned to obtain a cleaned electrode; The cleaned electrode is dried to obtain a dried electrode; The dried electrode is determined as the coated sintered electrode.

10. The method according to claim 9, wherein, the heat-treating the sintered electrode to obtain a heat-treated electrode includes: normalizing the sintered electrode to obtain a heat-treated electrode.

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