Facial mask preparation device

Abstract

The application provides a mask preparation device, and belongs to the technical field of skin care products. The mask preparation device comprises: an electrolysis unit for electrolyzing water to prepare acidic water and alkaline water; a buffer unit comprising an acid water cavity and an alkali water cavity; a stirring unit comprising a stirring bin and a pH detection part for detecting the pH value of a mixture in the stirring bin, the stirring bin being provided with a base material inlet; a liquid delivery unit in communication with the stirring bin, the stirring bin being selectively connected to the acid water cavity or the alkali water cavity through the liquid delivery unit; and a controller in communication connection with the pH detection part and the liquid delivery unit; the controller is configured to: according to the deviation direction of the real-time pH value detected by the pH detection part and the target pH value of the mask, selectively control the liquid delivery unit to connect the acid water cavity or the alkali water cavity to the stirring bin, so as to adjust the pH value of the mixture to the target pH value. The mask preparation device of the application can prepare ionized water and directly mix the ionized water with mask aggregate, reduces the difficulty of making a specific mask, and improves the pH value precision.

Description

Technical Field

[0001] This application belongs to the field of skin care technology, and more specifically, relates to a mask preparation device. Background Technology

[0002] In the preparation of face masks, the pH value of the mixture is a core parameter that determines the gentleness, skincare effect, and product stability of the mask. A pH value deviating from the standard range can easily irritate the skin and lead to the loss of the active ingredients and a shortened shelf life. Currently, in mainstream face mask manufacturing processes, pH adjustment mostly relies on the artificial addition of acid-base regulators or fixed-ratio buffer solutions, which is a crude method with poor controllability.

[0003] Traditional preparation equipment cannot achieve autonomous preparation and precise supply of acid-base adjustment media. It mostly involves one-time quantitative feeding, making it difficult to dynamically fine-tune the pH value based on the real-time pH state of the mixture during stirring. The composition of facial mask base materials is complex, and the pH will fluctuate slightly during stirring. Traditional equipment lacks real-time pH monitoring and closed-loop control structures, which easily leads to problems of over- or under-adjustment of pH value, resulting in large deviations in the pH value of the produced facial mask products. Summary of the Invention

[0004] This application provides a mask preparation device that can instantly prepare ionized water and directly mix it with mask aggregate, reducing the difficulty of making specific masks and improving pH value accuracy.

[0005] The technical solution adopted in this application embodiment is: to provide a mask preparation device, including:

[0006] An electrolysis unit for electrolyzing water to produce acidic and alkaline water;

[0007] The buffer unit includes an acid water chamber and an alkaline water chamber for storing the acidic water and the alkaline water, respectively.

[0008] A mixing unit includes a mixing chamber and a pH detection unit for detecting the pH value of the mixture in the mixing chamber, wherein the mixing chamber is provided with a base material inlet;

[0009] The infusion unit is connected to the stirring chamber, and the stirring chamber is selectively connected to either the acid chamber or the alkaline chamber via the infusion unit; and

[0010] The controller is communicatively connected to the pH detection unit and the infusion unit.

[0011] The controller is configured to: based on the deviation direction between the real-time pH value detected by the pH detection unit and the target pH value of the mask, control the infusion unit to deliver the liquid in the acidic water chamber or the alkaline water chamber to the mixing chamber, so as to adjust the pH value of the mixture to the target pH value.

[0012] Furthermore, the electrolysis unit includes an electrolytic cell, and a diaphragm is provided inside the electrolytic cell to divide the interior of the electrolytic cell into an anode chamber and a cathode chamber. The anode chamber is used to generate the acidic water, and the cathode chamber is used to generate the alkaline water.

[0013] The anode chamber is selectively connected to the acid water chamber via a first drain valve, and the cathode chamber is selectively connected to the alkali water chamber via a second drain valve.

[0014] The controller is also communicatively connected to the first drain valve and the second drain valve, and the controller is configured to control the first drain valve and the second drain valve to close during electrolysis, so that the electrolytic cell can be electrolyzed in a closed manner.

[0015] Furthermore, a pH sensor is respectively installed on the cathode chamber and the anode chamber. The pH sensor is communicatively connected to the controller and is used to measure the real-time pH value of the acidic water and the alkaline water. The controller is also configured to determine the target value of the acidic water and the target value of the alkaline water based on the target pH value of the face mask.

[0016] If the target pH value of the face mask is less than 7, when the real-time pH value of the acidic water reaches the target pH value of the acidic water, the controller opens the first drain valve and the second drain valve.

[0017] If the target pH value of the face mask is greater than 7, when the real-time pH value of the alkaline water reaches the target value of the alkaline water, the controller opens the first drain valve and the second drain valve.

[0018] If the target pH value of the face mask is 7, when the real-time pH value of the acidic water reaches the target value of the acidic water or the real-time pH value of the alkaline water reaches the target value of the alkaline water, the controller opens the first drain valve and the second drain valve.

[0019] Furthermore, the mask preparation device also includes a parameter acquisition unit for acquiring the operating parameters of the electrolysis unit, and the parameter acquisition unit is communicatively connected to the controller;

[0020] The controller is also configured to: determine the target values ​​of acidic water and alkaline water based on the target pH value of the face mask; and determine the real-time pH values ​​of the acidic water and the alkaline water based on the operating parameters.

[0021] If the target pH value of the face mask is less than 7, when the real-time pH value of the acidic water reaches the target pH value of the acidic water, the controller opens the first drain valve and the second drain valve.

[0022] If the target pH value of the face mask is greater than 7, when the real-time pH value of the alkaline water reaches the target value of the alkaline water, the controller opens the first drain valve and the second drain valve.

[0023] If the target pH value of the face mask is 7, when the real-time pH value of the acidic water reaches the target value of the acidic water or the real-time pH value of the alkaline water reaches the target value of the alkaline water, the controller opens the first drain valve and the second drain valve.

[0024] Furthermore, the parameter acquisition unit is used to detect the electrolytic current of the electrolysis unit;

[0025] The controller is configured to determine the real-time pH value of the acidic water and the pH value of the alkaline water based on the electrolysis current and a pre-stored mapping relationship between the electrolysis current and the pH value of the product water.

[0026] Furthermore, the infusion unit includes an acid water supply branch and an alkaline water supply branch. The acid water supply branch connects the acid water chamber to the mixing chamber, and the alkaline water supply branch connects the alkaline water chamber to the mixing chamber. Both the acid water supply branch and the alkaline water supply branch are equipped with a supply control valve. The controller is communicatively connected to the supply control valve to control the on / off state or opening degree of each supply control valve.

[0027] Furthermore, when adjusting the pH value of the mixture, the controller is also configured to: determine the feed amount of the infusion unit based on the pH value of the acidic water in the acidic water chamber and the pH value of the alkaline water in the alkaline water chamber, so as to control the feed amount of the acidic water or the alkaline water.

[0028] Furthermore, the mask preparation apparatus further includes a base material supply mechanism, which comprises:

[0029] At least two raw material containers;

[0030] Screw conveyor assemblies corresponding to each of the aforementioned raw material containers; and

[0031] Material collection hopper;

[0032] Each of the screw conveyor components is used to quantitatively convey the raw materials in the corresponding raw material container to the collection hopper, and the collection hopper is connected to the base material inlet; each of the screw conveyor components is electrically connected to the controller, and the controller is further configured to control each of the screw conveyor components to convey raw materials to the mixing chamber according to the formula ratio.

[0033] Furthermore, the screw conveyor assembly includes a housing, a screw conveyor rod, and a drive motor; the screw conveyor rod is rotatably disposed inside the housing, and the drive motor is drivingly connected to the screw conveyor rod; the housing has an inlet and a outlet, the inlet is connected to the discharge port of the corresponding raw material container, and the outlet faces the hopper.

[0034] Furthermore, the mixing chamber is also provided with a discharge port, and the discharge port is provided with a discharge valve; the controller is also communicatively connected to the discharge valve, and the controller is configured to: after the real-time pH value of the mixture reaches the target pH value of the face mask and the feeding stops, open the discharge valve to discharge the finished product.

[0035] The beneficial effects of the mask preparation device provided in this application embodiment are as follows: In the mask preparation device of this application embodiment, the electrolysis unit can directly decompose water to generate acidic water and alkaline water, which are temporarily stored in the acid water chamber and alkaline water chamber respectively. This eliminates the need for any external chemical acid or alkali reagents, thus eliminating the potential irritation of the skin and interference with the stability of the material from the source. The pH detection unit installed in the mixing chamber captures the acid-base changes of the mixture in real time and continuously transmits the signal to the controller. After comparing the deviation direction between the real-time pH and the target pH of the mask, the controller flexibly controls the infusion unit to selectively connect the acid water chamber or alkaline water chamber to the mixing chamber, gradually adding the required acidic or alkaline water to the mixture. This closed-loop structure of "real-time detection - instant judgment - on-demand connection" completely changes the traditional extensive mode of quantitative one-time addition. It can make real-time fine adjustments according to the fluctuation of the base material composition during the stirring process, effectively avoiding the problem of over- or under-adjustment of pH, thereby significantly reducing the pH deviation of the mask, significantly improving the pH accuracy of the mask, and simplifying the preparation process, reducing the difficulty of preparing specific masks. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a schematic diagram of the piping connections of the mask preparation apparatus provided in the embodiments of this application;

[0038] Figure 2 A perspective view of the mask preparation apparatus provided in the embodiments of this application;

[0039] Figure 3 This is a front view of the mask preparation apparatus provided in an embodiment of this application;

[0040] Figure 4 for Figure 3 A sectional view along the middle AA;

[0041] Figure 5 An exploded view of a mask preparation apparatus provided in an embodiment of this application;

[0042] Figure 6 An exploded view of the screw conveyor assembly provided in an embodiment of this application.

[0043] The following are the labeling elements in the figure:

[0044] 1. Electrolysis unit; 11. Electrolytic cell; 111. Diaphragm; 112. Anode chamber; 113. Cathode chamber; 114. First drain valve; 115. Second drain valve; 12. Water supply unit;

[0045] 2. Buffer unit; 21. Acid water chamber; 22. Alkaline water chamber;

[0046] 3. Mixing unit; 31. Mixing chamber; 311. Base material inlet; 312. Discharge port; 313. Discharge valve; 32. pH detection unit; 33. Mixing mechanism;

[0047] 4. Infusion unit; 41. Acid water supply branch; 42. Alkali water supply branch; 43. Supply control valve;

[0048] 5. Controller;

[0049] 6. Parameter acquisition unit;

[0050] 7. Base material supply mechanism; 71. Raw material container; 711. Discharge port; 72. Screw conveyor assembly; 721. Housing; 7211. Inlet; 7212. Outlet; 722. Screw conveyor; 723. Drive motor; 73. Collection hopper;

[0051] 8. Mask mold. Detailed Implementation

[0052] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0053] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0054] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0055] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0056] Please see Figure 1 , Figure 3 and Figure 4 The mask preparation apparatus provided in the embodiments of this application will now be described. The mask preparation apparatus provided in the embodiments of this application includes an electrolysis unit 1, a buffer unit 2, a stirring unit 3, a liquid delivery unit 4, and a controller 5.

[0057] Reference Figure 1 Electrolysis unit 1 is used to electrolyze water to prepare acidic and alkaline water. The main function of electrolysis unit 1 is to break down ordinary raw water through electrolysis to generate acidic and alkaline water that can be used to adjust the pH of face masks. Electrolysis unit 1 specifically includes an electrolysis tank 11, a high-voltage power supply module, and a water pretreatment filter. All components work together to complete the water electrolysis purification operation, and the whole unit is integrated inside the equipment frame, independent of the material stirring structure.

[0058] Reference Figure 1 and Figure 4 The buffer unit 2 includes an acid water chamber 21 and an alkaline water chamber 22 for storing the acidic water and the alkaline water, respectively. The buffer unit 2 is a storage container for temporarily storing the electrolyzed acid-base balancing water, serving as a reserve medium for subsequent pH adjustment operations. The acid water chamber 21 is an independent, sealed water storage chamber within the buffer unit 2, made of food-grade stainless steel or corrosion-resistant plastic. It has a vertical, sealed cylindrical structure and stores the electrolyzed acidic water separately. The acid water chamber 21 can have a dedicated inlet and outlet, and its fully sealed design effectively isolates external dust and impurities, preventing contamination of the balancing water. The alkaline water chamber 22 is an independent, sealed chamber symmetrically arranged with the acid water chamber 21, specifically for storing alkaline electrolyzed water. The completely separate structure of the alkaline water chamber 22 and the acid water chamber 21 fundamentally prevents premature contact and neutralization reactions between the acidic and alkaline water, ensuring the effectiveness of the balancing medium.

[0059] Reference Figure 4 and Figure 5 The mixing unit 3 includes a mixing chamber 31 and a pH detection unit 32 for detecting the pH value of the mixture within the mixing chamber 31. The mixing chamber 31 is equipped with a base material inlet 311. The mixing unit 3 is a structure for mixing, blending, and pH adjusting the mask base material. Specifically, the mixing unit 3 may include a sealed mixing chamber 31, a mixing mechanism 33, and other supporting components, responsible for uniformly mixing various mask base materials and simultaneously cooperating to achieve precise pH control. The mixing chamber 31 can adopt a vertical cylindrical sealed structure, with a base material inlet 311 reserved at the top and a discharge structure at the bottom, providing a sealed operating space for mixing, blending, and pH adjustment of the mask mixture. The pH detection unit 32 is a sensing component for real-time detection of the acidity and alkalinity of the mixture. It can be a high-precision pH sensor probe, which is directly immersed in the mixture, and can capture the dynamic changes in the acidity and alkalinity of the material in real time, continuously outputting accurate pH detection data. The base material inlet 311 is a material conveying channel that runs through the top of the mixing chamber 31. It has a tubular through-hole structure and the diameter is compatible with conventional material conveying pipelines. It serves as a dedicated feeding channel for basic raw materials such as mask powder, essence matrix, solvent, and fruit and vegetable powder, ensuring that the raw materials can be smoothly fed into the mixing chamber 31.

[0060] Reference Figure 1 The infusion unit 4 is connected to the stirring chamber 31. The stirring chamber 31 is selectively connected to either the acid water chamber 21 or the alkaline water chamber 22 via the infusion unit 4. The infusion unit 4 may specifically include components such as a delivery pipeline, an electromagnetic control valve, a flow throttle, and a flow divider. It can selectively open the water path according to control commands to achieve directional delivery of acid- and alkaline-adjusting water.

[0061] The controller 5 is communicatively connected to the pH detection unit 32 and the infusion unit 4. The controller 5 is configured to, based on the deviation direction between the real-time pH value detected by the pH detection unit 32 and the target pH value of the mask, control the infusion unit 4 to connect the acid water chamber 21 or the alkaline water chamber 22 to the stirring chamber 31, so as to deliver the liquid in the acid water chamber or the alkaline water chamber to the stirring chamber, thereby adjusting the pH value of the mixture to the target pH value.

[0062] Controller 5 is the control core of the device, with a built-in programmable logic chip and data processing program. It communicates with various actuators of the pH detection unit 32 and the infusion unit 4 via wired or wireless means, and has multiple functions such as data reception, logic judgment, instruction output, and parameter storage. Controller 5 can specifically be a PLC controller, a microcontroller control board, or an industrial computer.

[0063] The pH detection unit 32 collects the pH value of the mixture in the mixing chamber 31 in real time and transmits the signal to the controller 5. The controller 5 compares the real-time pH value with the preset target pH value of the face mask and determines the direction of the deviation between the two.

[0064] The deviation direction refers to the trend of the real-time pH value deviating from the target pH value, including three states: positive, negative, and zero. A positive deviation direction indicates that the real-time pH value is higher than the target pH value, and the mixture is in an alkaline state. A negative deviation direction indicates that the real-time pH value is lower than the target pH value, and the mixture is in an acidic state. A zero deviation direction indicates that the real-time pH value is equal to or close to the target pH value, and the mixture is within the target pH range.

[0065] The specific direction of deviation can be determined by calculating the deviation value. The formula for calculating the deviation value is ΔpH = real-time pH value − target pH value. The sign of the deviation value directly determines the direction of deviation. When the deviation value is positive, the deviation direction is determined to be positive, and the mixture is alkaline. When the deviation value is negative, the deviation direction is determined to be negative, and the mixture is acidic. When the deviation value is zero or within the preset tolerance range, the deviation direction is determined to be zero, and the mixture meets the standard.

[0066] For example, if the target pH value of the face mask is 6.0 and the real-time pH value is 6.5, then ΔpH = 6.5 − 6.0 = +0.5, the deviation is positive, and the direction of deviation is positive, indicating that the mixture is slightly alkaline. As another example, if the target pH value of the face mask is 6.0 and the real-time pH value is 5.5, then ΔpH = 5.5 − 6.0 = −0.5, the deviation is negative, and the direction of deviation is negative, indicating that the mixture is slightly acidic. And as yet another example, if the target pH value of the face mask is 6.0 and the real-time pH value is 6.0, then ΔpH = 6.0 − 6.0 = 0, the deviation is zero, and the direction of deviation is zero, indicating that the pH value of the mixture has met the standard.

[0067] When the deviation direction is positive, i.e., the real-time pH value is higher than the target pH value and the mixture is alkaline, the controller 5 controls the infusion unit 4 to connect the acid water chamber 21 to the mixing chamber 31, adding acidic water to the mixture to lower the pH value. The added acidic water has a pH value of 3.5, which neutralizes the alkaline mixture, and the real-time pH value gradually decreases until the deviation direction is zero. At this point, the controller 5 shuts down the infusion unit 4 and stops the feeding.

[0068] When the deviation direction is negative, i.e., the real-time pH value is lower than the target pH value and the mixture is acidic, the controller 5 controls the infusion unit 4 to connect the alkaline water chamber 22 to the mixing chamber 31, adding alkaline water to the mixture to raise the pH value. For example, if the added alkaline water has a pH value of 10.0, it will neutralize the acidic mixture, and the real-time pH value will gradually rise until the deviation value is 0. When the deviation direction is zero, the controller 5 closes the alkaline feeding valve and stops feeding.

[0069] When the absolute value of the deviation is less than the preset tolerance value, such as ±0.1, the controller 5 determines that the pH value of the mixture is within the target range, and the deviation direction is considered zero, so no replenishment is needed. For example, if the target pH value is 6.0, the real-time pH value is 6.05, the deviation value is +0.05, the absolute value of 0.05 is less than the tolerance of 0.1, the deviation direction is returned to zero, the controller 5 does not initiate replenishment, and directly determines that the target is met. Similarly, if the target pH value is 6.0, the real-time pH value is 5.95, the deviation value is −0.05, the absolute value of 0.05 is less than the tolerance of 0.1, the deviation direction is also returned to zero, and the target is determined to be met. This tolerance value can be adjusted according to the precision requirements of the mask formula; the tolerance for high-precision formulas is set to ±0.05, and the tolerance for regular formulas is set to ±0.2.

[0070] The controller 5 can perform the above detection, calculation, deviation direction judgment and feeding control in a cycle of 100ms until the pH value of the mixture is stably adjusted to the target pH value range and maintained within the range for more than 10 seconds before entering the discharge stage.

[0071] Based on the above structure, when the mask preparation device of this embodiment is running, the electrolysis unit 1 first electrolyzes the clean raw water to stably generate acidic and alkaline water suitable for mask preparation. The two types of water prepared are respectively transported to the acid water chamber 21 and alkaline water chamber 22 of the buffer unit 2 for sealed storage. The user or the base material supply mechanism 7 puts various basic raw materials for the mask into the mixing chamber 31 through the base material inlet 311, and the mixing unit 3 starts to run, continuously stirring and mixing the base material. During the entire process of material stirring, the pH detection unit 32 collects the real-time pH value of the mixture in real time and continuously transmits the detection signal to the controller 5. The controller 5 compares the received real-time pH data with the system's preset target pH value for the mask, accurately determines the direction of the current material's acidity or alkalinity deviation, and distinguishes whether the material is acidic or alkaline. Subsequently, the controller 5 outputs a targeted control command to drive the infusion unit 4 to connect the acid water chamber 21 or alkaline water chamber 22 to the mixing chamber 31, accurately replenishing the corresponding adjusting water into the mixing chamber 31. By continuously and dynamically fine-tuning the pH of the mixture until the pH value of the material perfectly matches the preset target value, the precise pH adjustment of the mask mixture is achieved. This entire system enables a fully automated closed-loop operation of autonomous preparation of acid and alkali media, real-time pH monitoring, and intelligent dynamic replenishment, avoiding the problem of low precision in traditional manual acid and alkali adjustment, and significantly improving the accuracy of mask preparation and product stability.

[0072] Reference Figure 1 and Figure 4In some embodiments, the electrolysis unit 1 includes an electrolytic cell 11, which is provided with a diaphragm 111 that divides the interior of the electrolytic cell 11 into an anode chamber 112 and a cathode chamber 113. The anode chamber 112 is used to generate the acidic water, and the cathode chamber 113 is used to generate the alkaline water. The anode chamber 112 is selectively connected to the acidic water chamber 21 through a first drain valve 114, and the cathode chamber 113 is selectively connected to the alkaline water chamber 22 through a second drain valve 115. The controller 5 is also communicatively connected to the first drain valve 114 and the second drain valve 115, and the controller 5 is configured to close the first drain valve 114 and the second drain valve 115 during electrolysis, so that the electrolytic cell 11 is electrolyzed in a closed manner.

[0073] Electrolytic cell 11 is the chamber for the water electrolysis reaction. It can be equipped with components such as electrolytic electrodes, insulating gaskets, waterproof terminals, and a tank fixing bracket, providing a sealed, corrosion-resistant, and stable operating environment for the water electrolysis reaction. The diaphragm 111 is a microporous isolation component installed inside the electrolytic cell 11. It is made of a special high-molecular material that is permeable to water but impermeable to ions, and is lightweight and corrosion-resistant. Examples include perfluorosulfonic acid proton exchange membranes (Nafion membranes), sulfonated polyether ether ketone (sPEEK membranes), and polybenzimidazole (PBI membranes). The component is fixed vertically or horizontally at the center of the electrolytic cell 11, completely separating the internal space of the tank and preventing the cross-flow of ions generated by the anode and cathode electrolysis. The anode chamber 112 is an independent chamber formed by the diaphragm 111, corresponding to the anode electrode side of the electrolytic cell 11. It is used for the water electrolysis oxidation reaction to generate acidic water, and a dedicated drain port is provided at the bottom of the chamber. The cathode chamber 113 is an independent chamber completely isolated from the anode chamber 112. It is located on the side of the cathode electrode of the electrolytic cell 11. Its structure, layout and size are symmetrical to those of the anode chamber 112. It is used to generate alkaline water through water electrolysis reduction reaction and does not interfere with the operation of the anode chamber 112.

[0074] Reference Figure 1 The first drain valve 114 is an electrically controlled switch valve body installed on the pipeline connecting the anode chamber 112 and the acid water chamber 21. It can be a high-precision electromagnetic control valve, which can quickly respond to the commands of the controller 5 and accurately control the discharge and on / off state of acidic water in the anode chamber 112. The second drain valve 115 is an independent electrically controlled valve body assembled in the pipeline connecting the cathode chamber 113 and the alkaline water chamber 22. It has the same specifications as the first drain valve 114 and is independent of it. It is specifically used to control the timing of alkaline water discharge and the on / off state of the pipeline.

[0075] When the electrolysis operation of the mask preparation device begins, the controller 5 first outputs a lockout command, simultaneously controlling the first drain valve 114 and the second drain valve 115 to completely close, creating a completely sealed, independent electrolysis space inside the electrolytic cell 11. Under sealed conditions, the electrolytic cell 11 is powered on and started. Relying on the physical isolation of the diaphragm 111, water molecules inside the anode chamber 112 undergo an oxidation reaction, stably generating acidic water of uniform purity. Water molecules inside the cathode chamber 113 undergo a reduction reaction, continuously generating alkaline water of stable concentration. After the electrolysis operation is completed and the water parameters meet the standards, the controller 5 then opens the corresponding drain valves according to the storage requirements, delivering the acidic and alkaline water to the corresponding buffer chambers.

[0076] Reference Figure 1 and Figure 2 In some embodiments, the electrolysis unit 1 further includes a water supply unit 12, which is connected to the anode chamber 112 and the cathode chamber 113 respectively, to supply raw water to the anode chamber 112 and the cathode chamber 113. The water supply unit 12 is a component that continuously provides a clean water source for the electrolysis reaction. Specifically, the water supply unit 12 may include supporting components such as a water purification filter cartridge, an automatic water inlet pump, a pressure stabilizing and diversion pipeline, and a water level monitoring sensor, which can realize the filtration, pressure stabilization, and quantitative delivery of raw water.

[0077] The anode chamber 112 is an independent oxidation reaction chamber formed by the diaphragm 111 inside the electrolytic cell 11. It is dedicated to receiving the raw water supplied by the water supply unit 12 and provides a reaction medium for the generation of acidic water. The chamber has strong sealing and can ensure a stable electrolysis environment.

[0078] The cathode chamber 113 is an independent reduction reaction chamber within the electrolytic cell 11, isolated from the anode chamber 112. It receives raw water supplied by the water supply unit 12 independently and completes the alkaline water preparation operation independently, without interfering with the water supply and operation process of the anode chamber 112.

[0079] During the overall operation of the mask preparation device, the water supply unit 12 serves as the dedicated water supply structure for the electrolysis unit 1, automatically starting and stopping operation based on the water level inside the electrolysis cell 11. External raw water first passes through the filter element of the water supply unit 12 to remove impurities, particles, and other interfering substances, resulting in clean water. It is then precisely delivered to the anode chamber 112 and cathode chamber 113 via branch pipelines, simultaneously replenishing water to both independent electrolysis chambers or individually as needed. The water supply process maintains stable pressure and flow throughout, ensuring the water levels in the anode chamber 112 and cathode chamber 113 remain within the optimal electrolysis range, preventing overflow from excessively high levels and ensuring high efficiency from excessively low levels. This continuous, clean, and stable supply of raw water allows the electrolysis unit 1 to continuously prepare acidic and alkaline solutions for extended periods without manual water replenishment or replacement. This ensures the stability of the electrolyzed water quality and enhances the automation level of the device, making it suitable for continuous mass production of masks.

[0080] Reference Figure 1 In some embodiments, the mask preparation apparatus further includes a parameter acquisition unit 6 for acquiring the operating parameters of the electrolysis unit 1, and the parameter acquisition unit 6 is communicatively connected to the controller 5. The parameter acquisition unit 6 is used to monitor the operating status of the electrolysis unit 1 in real time, providing a data basis for the controller 5's decision-making. In this embodiment, the parameter acquisition unit 6 includes a current detection unit, which can employ a Hall current sensor or a precision sampling resistor, connected in series in the power supply circuit of the electrolysis cell 11, for real-time detection of the electrolysis current. The current detection unit converts the detected current signal into a digital signal and transmits it to the controller 5 through a communication interface.

[0081] The controller 5 is further configured to: determine the target values ​​of acidic water and alkaline water based on the target pH value of the face mask; and determine the pH values ​​of the acidic water and the alkaline water based on the operating parameters.

[0082] If the target pH value of the face mask is less than 7, when the real-time pH value of the acidic water reaches the target pH value of the acidic water, the first drain valve 114 and the second drain valve 115 are controlled to open.

[0083] If the target pH value of the face mask is greater than 7, when the real-time pH value of the alkaline water reaches the target value of the alkaline water, the first drain valve 114 and the second drain valve 115 are controlled to open.

[0084] If the target pH value of the face mask is 7, when the real-time pH value of the acidic water reaches the target value of the acidic water or the real-time pH value of the alkaline water reaches the target value of the alkaline water, the first drain valve 114 and the second drain valve 115 are controlled to open.

[0085] Specifically, when the user inputs a target pH value of 5.5 for the face mask, since 5.5 is less than 7, the controller 5 determines that the face mask is an acidic mask. Based on this target pH value, the controller 5 generates acidic water with a target value of 4.5 and alkaline water with a target value of 10. The controller 5 starts the electrolytic cell 11 for electrolysis, acquiring the electrolysis current in real time and determining the current pH values ​​of the acidic and alkaline water using a table. When the pH value of the acidic water reaches 4.5, regardless of whether the alkaline water reaches 10, the controller 5 opens the first drain valve 114 and the second drain valve 115, discharging the acidic and alkaline water into the acidic water chamber 21 and the alkaline water chamber 22, respectively. This design is based on the fact that the pH adjustment of the acidic face mask mainly relies on the acidic water; as long as the acidic water meets the target, the subsequent mixing requirements are met.

[0086] When the user inputs a target pH value of 8.0 for the face mask, since 8.0 is greater than 7, controller 5 determines that the face mask is alkaline. Controller 5 generates acidic water with a target pH of 5 and alkaline water with a target pH of 9.5. During electrolysis, controller 5 continuously monitors the pH value of the product water in both chambers. When the pH value of the alkaline water reaches 9.5, even if the pH value of the acidic water has not yet reached 5, controller 5 immediately opens the first drain valve 114 and the second drain valve 115 to complete the discharge. This logic ensures that the timely supply of alkaline water is prioritized during the production of alkaline face masks.

[0087] When the user inputs a target pH value of 7.0 for the face mask, which equals 7, controller 5 determines the face mask to be neutral. Controller 5 generates acidic water with a target value of 5 and alkaline water with a target value of 9. During electrolysis, the anode chamber 112 and cathode chamber 113 simultaneously produce water. If the acidic water reaches 5 first while the alkaline water is still at 8.5, controller 5 immediately opens the first drain valve 114 and the second drain valve 115, draining both the acidic and alkaline water into their respective chambers. Similarly, if the alkaline water reaches 9 first while the acidic water is still at 5.5, controller 5 also immediately opens both valves to complete the discharge. The discharge logic for the neutral face mask is triggered when either polarity reaches its target first, avoiding over-electrolysis and energy waste, while ensuring that both chambers have buffer water for subsequent bidirectional fine adjustment.

[0088] In another embodiment, the generation rules for the target values ​​of acidic and alkaline solutions can be dynamically adjusted. For example, the target value of acidic solution for an acidic mask can be set to the target pH value of the mask minus 1, and the target value of alkaline solution can be set to the target pH value of the mask plus 3, forming an asymmetric margin to ensure the dominance of acidic adjustment. Conversely, for an alkaline mask, the target value of alkaline solution is set to the target pH value of the mask plus 1, and the target value of acidic solution is set to the target pH value of the mask minus 3. Neutral masks maintain a symmetrical margin, with the target value of acidic solution being 7 minus 2 equaling 5, and the target value of alkaline solution being 7 plus 2 equaling 9. These offsets can be adaptively corrected based on the initial pH of the base material, the volume of the mixing chamber 31, and the flow characteristics of the feeding valve, and stored in the formula database of the controller 5 for later retrieval.

[0089] In some embodiments, the parameter acquisition unit 6 is used to detect the electrolysis current of the electrolysis unit 1; the controller 5 is configured to determine the pH value of the acidic water and the pH value of the alkaline water based on the electrolysis current and a pre-stored mapping relationship between the electrolysis current and the pH value of the product water.

[0090] In this structure, the parameter acquisition unit 6 specifically refers to the high-precision electrolysis current detection component, which may include accessories such as a current sensing probe, a signal amplification module, and a data transmission line, and is used to collect the working circuit current data of the electrolysis unit 1 in real time.

[0091] Electrolysis current is the circuit operating current when electrolysis unit 1 is energized. It is a core operating parameter that directly reflects the intensity of the electrolysis reaction and the degree of water electrolysis. The magnitude of the current value directly corresponds to the concentration and pH value of the acid-base electrolyzed water.

[0092] The mapping relationship is a corresponding database pre-stored inside the controller 5. It is a precise correspondence logic between the electrolysis current value and the pH value of acid and alkaline water. It belongs to the equipment preset calibration parameters and can realize indirect accurate pH measurement without water quality sensors.

[0093] Specifically, the mapping relationship is established through pre-calibration. During calibration, electrolysis conditions are fixed, including an electrode spacing of 5 mm, a raw water conductivity of 200 μS / cm, and a temperature of 25°C. Electrolysis cell 11 is started, and the electrolysis current is gradually adjusted from 0.5 A to 5 A, with each 0.5 A increment representing a step, and each step is maintained for 3 minutes. At each current step, the actual pH values ​​of the permeate from anode chamber 112 and cathode chamber 113 are simultaneously measured using a standard pH meter, and the corresponding data are recorded. For example, when the electrolysis current is 1 A, the pH value of the permeate from anode chamber 112 is 5.5, and the pH value of the permeate from cathode chamber 113 is 8.5. When the electrolysis current is 2 A, the pH value of the permeate from anode chamber 112 is 4.0, and the pH value of the permeate from cathode chamber 113 is 10.0. When the electrolysis current is 3 A, the pH value of the permeate from anode chamber 112 is 3.0, and the pH value of the permeate from cathode chamber 113 is 11.0. When the electrolysis current is 4A, the pH value of the product water in the anode chamber 112 is 2.5, and the pH value of the product water in the cathode chamber 113 is 11.5. A correspondence table between the above electrolysis current values ​​and the corresponding product water pH values ​​is established and stored in the controller 5 to form a mapping relationship.

[0094] During actual operation, controller 5 acquires the current electrolysis current value, queries the mapping table, and determines the current product water pH value through linear interpolation or nearest-neighbor selection. For example, if the current electrolysis current is 2.5A, there is no direct corresponding value in the mapping table. In the mapping table, 2A corresponds to a pH value of 4.0 in anode chamber 112 and a pH value of 10.0 in cathode chamber 113, and 3A corresponds to a pH value of 3.0 in anode chamber 112 and a pH value of 11.0 in cathode chamber 113. Controller 5 calculates the estimated pH value of the product water in anode chamber 112 as 3.5 and the estimated pH value of the product water in cathode chamber 113 as 10.5 through linear interpolation. If nearest-neighbor selection is used, the estimated pH value of anode chamber 112 is 4.0 and the estimated pH value of cathode chamber 113 is 10.0. Controller 5 selects the interpolation or nearest-neighbor method according to the accuracy requirements and uses the determined pH value for subsequent discharge judgment and feed control.

[0095] In another embodiment, pH sensors are respectively provided on the cathode chamber and the anode chamber, and the pH sensors are communicatively connected to the controller. The pH sensors are used to measure the real-time pH values ​​of the acidic water and the alkaline water. The controller is also configured to determine the target values ​​of the acidic water and the alkaline water based on the target pH value of the face mask.

[0096] If the target pH value of the face mask is less than 7, when the real-time pH value of the acidic water reaches the target pH value of the acidic water, the controller opens the first drain valve and the second drain valve.

[0097] If the target pH value of the face mask is greater than 7, when the real-time pH value of the alkaline water reaches the target value of the alkaline water, the controller opens the first drain valve and the second drain valve.

[0098] If the target pH value of the face mask is 7, when the real-time pH value of the acidic water reaches the target value of the acidic water or the real-time pH value of the alkaline water reaches the target value of the alkaline water, the controller opens the first drain valve and the second drain valve.

[0099] Reference Figure 1 In some embodiments, the infusion unit 4 includes an acid water supply branch 41 and an alkaline water supply branch 42. The acid water supply branch 41 connects the acid water chamber 21 to the stirring chamber 31, and the alkaline water supply branch 42 connects the alkaline water chamber 22 to the stirring chamber 31. Both the acid water supply branch 41 and the alkaline water supply branch 42 are equipped with a supply control valve 43. The controller 5 selectively connects the acid water chamber 21 or the alkaline water chamber 22 to the stirring chamber 31 by controlling the on / off state or opening degree of each supply control valve 43.

[0100] The infusion unit 4 has two independent feed branches, which are divided into two types: acid water feed branch 41 and alkaline water feed branch 42. Specifically, it may include anti-corrosion delivery pipes, pipe fixing buckles, anti-leakage joints and other accessories. The two branches are completely independent and do not connect to each other.

[0101] The feed control valve 43 is an electrically controlled regulating valve body installed on two feed branches. Specifically, it can be an electromagnetic on / off valve, a proportional flow regulating valve, a throttling and pressure stabilizing valve, etc., which can accurately control the pipeline on / off and the medium delivery flow.

[0102] When the device adjusts the pH of the mask mixture, the two independent feeding branches remain physically isolated and standby, each corresponding to a dedicated acid-base adjustment water delivery task. The controller 5 accurately determines whether the material is acidic or alkaline based on the real-time pH deviation of the mixture in the mixing chamber 31, and outputs targeted independent control commands. If the material's pH is too high or too alkaline, the controller 5 only opens the feeding control valve 43 on the acid water feeding branch 41, connecting the acid water chamber 21 and the mixing chamber 31, adding acidic water for neutralization and adjustment. If the material's pH is too low or too acidic, the controller separately opens the feeding control valve 43 on the alkaline water feeding branch 42, adding alkaline water to fine-tune the pH. Simultaneously, the controller 5 can adjust the opening degree of the control valves according to the magnitude of the deviation, precisely controlling the feeding flow rate and the total amount of material added at one time. This separate, independently controllable pipeline structure avoids the problem of neutralization failure when acid and alkaline water enter the mixing chamber 31 at the same time, and avoids the situation of regulation disorder and pH regulation failure, which greatly improves the accuracy, controllability and stability of the pH adjustment of the mask mixture.

[0103] In some embodiments, when adjusting the pH value of the mixture, the controller 5 is further configured to: determine the amount of feed added to the infusion unit 4 based on the pH value of the acidic water in the acidic water chamber 21 and the pH value of the alkaline water in the alkaline water chamber 22, so as to control the amount of acidic or alkaline water added.

[0104] The controller 5 has a built-in multi-parameter linkage calculation program that can combine pre-electrolysis calibration parameters with real-time material parameters for collaborative calculation. Based on the electrolysis current collected by the parameter acquisition unit 6 mentioned above, and through a preset mapping relationship, it accurately calibrates and locks the fixed pH values ​​of the acid and alkali water stored in the acid water chamber 21 and alkali water chamber 22, eliminating the need for real-time secondary detection. At the same time, it combines the real-time pH deviation data of the mixture in the mixing chamber 31 to achieve precise quantitative feeding control.

[0105] The acid water chamber 21 is an independent, sealed chamber for storing acidic conditioning water. After electrolysis and discharge of the acidic water within the chamber, its pH value has been calibrated and confirmed through electrolysis current parameters. The value is fixed and known, and this fixed parameter is pre-entered into the controller 5 as the core basis for calculating the pH adjustment feed amount. Similarly, the alkaline water chamber 22 is an independent, sealed chamber for storing alkaline conditioning water. Following the same principle as the acid water chamber 21, after electrolysis and discharge of the alkaline water into the chamber, its pH parameter is precisely determined and constant. The controller 5 can directly retrieve this fixed parameter for feed amount calculation without dynamically detecting the water concentration.

[0106] The infusion unit 4 is a pipeline assembly for conveying acid and alkali water. It can accurately deliver the corresponding volume of regulating water according to the quantitative instructions of the controller 5, and supports multiple feeding modes such as small flow fine adjustment and large flow rapid correction.

[0107] The feed amount is the volume of acid and alkaline water that needs to be added to the mixing chamber 31 in a single pH adjustment operation. It is a precise feed parameter obtained by the controller 5 through intelligent calculation of multiple parameters, rather than a fixed preset value.

[0108] Throughout the pH adjustment process of the mixture, controller 5 relies on the pre-electrolysis calibration logic of the device to complete precise quantity control. During the electrolysis stage, parameter acquisition unit 6 continuously monitors the electrolysis current and accurately determines the pH value of acidic and alkaline water through pre-stored mapping relationships. Once the water parameters meet the standards, electrolysis is stopped, and acidic and alkaline water with fixed pH values ​​are discharged into their respective storage chambers, ensuring that the pH values ​​of the two types of regulated water in the buffer chamber remain fixed and the parameters are known. During subsequent pH adjustment of the mixture in mixing chamber 31, controller 5 no longer ambiguously determines the amount of feed, but directly retrieves the fixed pH parameters of the regulated water inside acidic water chamber 21 and alkaline water chamber 22. Combined with the deviation between the real-time pH value of the mixture collected by pH detection unit 32 and the target pH value, the controller performs linkage calculations to accurately calculate the required amount of acidic or alkaline water to be fed. Based on the calculation results, controller 5 precisely controls the start / stop, opening degree, and feeding duration of infusion unit 4, and specifically matches the corresponding feeding volume to avoid overfeeding or underfeeding due to unknown regulated water concentration. This quantitative feeding mode, based on known constant water parameters, combines the core advantage of precise parameter setting in front-end electrolysis, making the pH adjustment of the mask mixture more precise and controllable, and completely solving the problems of pH deviation and material ratio imbalance caused by traditional extensive feeding.

[0109] Reference Figure 4 , Figure 5 and Figure 6 In some embodiments, the mask preparation apparatus further includes a base material supply mechanism 7, which includes at least two raw material containers 71, screw conveying assemblies 72 corresponding to each of the raw material containers 71, and a collection hopper 73; wherein each screw conveying assembly 72 is used to quantitatively convey the raw material in the corresponding raw material container 71 to the collection hopper 73, and the collection hopper 73 is connected to the base material inlet 311; each screw conveying assembly 72 is electrically connected to the controller 5, and the controller 5 is further configured to control each screw conveying assembly 72 to convey raw materials to the mixing chamber 31 according to the formula ratio.

[0110] The raw material container 71 is a sealed storage tank for storing various raw materials for face masks. The equipment is equipped with at least two independent containers, which may include powder storage tanks, liquid storage tanks, paste storage tanks, etc., and can store different materials such as face mask powder matrix, essence, functional additives, and moisturizing solvents respectively. The tanks are sealed to prevent dust and pollution.

[0111] The screw conveyor assembly 72 is a quantitative conveying component that is matched one-to-one with the raw material container 71, and is the execution structure for realizing quantitative material conveying.

[0112] The aggregate is a multi-raw material collection and transfer cavity with an overall funnel-shaped structure that is wider at the top and narrower at the bottom. The inner wall is smooth and free of residue. The top connects to the discharge end of all screw conveyor components 72, and the bottom channel directly connects to the base material inlet 311 of the mixing chamber 31.

[0113] The controller 5 is independently electrically connected to each screw conveyor assembly 72, and can independently control the start-up, stop, speed and conveying time of each conveyor structure. It also relies on the built-in formula program to achieve precise feeding control of multiple raw materials in proportion.

[0114] Before starting the mask preparation process, the user loads different types of mask raw materials into their respective independent raw material containers 71, completing the raw material preparation. During production, the controller 5 retrieves the internally preset mask production formula parameters and sends independent operating commands to each screw conveyor assembly 72 according to the formula ratio requirements. The controller 5 controls each set of screw conveyor assemblies 72 to deliver the corresponding raw materials in precise proportions and quantities by adjusting the operating speed and working time of each drive motor 723. Various raw materials flow out from their dedicated raw material containers 71 and are precisely conveyed to the collection hopper 73 via the corresponding screw conveyor assemblies 72, where they are initially collected and integrated. The collected mixed raw materials are then smoothly fed into the mixing chamber 31 through the base material inlet 311 via the bottom channel, entering the subsequent mixing and pH adjustment processes. The entire base material supply mechanism 7 realizes automated, proportional, and precise feeding of multiple types of mask raw materials, replacing the manual feeding mode and laying a solid raw material foundation for the subsequent precise pH adjustment of the mixed materials.

[0115] Reference Figure 4 , Figure 5 and Figure 6 In some embodiments, the screw conveyor assembly 72 includes a housing 721, a screw conveyor 722, and a drive motor 723; the screw conveyor 722 is rotatably disposed within the housing 721, and the drive motor 723 is drively connected to the screw conveyor 722; the housing 721 has an inlet 7211 and a discharge outlet 7212, the inlet 7211 is connected to the discharge outlet 711 of the corresponding raw material container 71, and the discharge outlet 7212 faces the collection hopper 73.

[0116] The housing 721 is the external sealed protective housing of the screw conveyor assembly 72. It can be a long tubular sealed structure with both ends sealed and dedicated through holes reserved at the top and bottom. Specifically, it may include accessories such as fixed brackets, sealing end caps, and dustproof sealing rings, providing a sealed installation space for the internal conveying structure.

[0117] The spiral conveyor rod 722 is the core component for material pushing and conveying. The outer side of the rod body is integrally formed with continuous spiral blades with uniform blade spacing, which can be adapted to the conveying of various mask raw materials such as powder, granules, paste, and liquid.

[0118] The drive motor 723 is the power output component of the screw conveyor. It is an adjustable speed servo motor, which may include accessories such as a reducer, transmission coupling, and motor mounting bracket. It can precisely control the speed, start / stop and running time.

[0119] The feed inlet 7211 is a through-hole for feeding that is opened on the top of the housing 721. Its diameter matches and connects with the discharge port 711 of the raw material container 71, allowing the raw material to fall smoothly into the housing 721 and ensuring a smooth and unobstructed material supply.

[0120] The feeding outlet 7212 is a discharge channel opened at the bottom of the casing 721. The opening faces the upper opening of the collecting hopper 73, allowing the conveyed raw materials to fall directly into the collecting hopper 73 without spillage or waste.

[0121] In standby mode, the screw conveyor assembly 72 remains stationary, and the material in the raw material container 71 is stored statically and will not flow into the conveying structure on its own. When the controller 5 issues a feeding command, the drive motor 723 starts running, driving the screw conveyor 722 inside the housing 721 to rotate at a constant speed through the transmission structure. The raw material smoothly enters the sealed housing 721 from the discharge port 711 of the raw material container 71 through the inlet 7211 of the housing 721, falling into the gaps between the blades of the screw conveyor 722. Relying on the continuous rotation of the screw blades, the material is moved at a constant speed and smoothly towards the feeding outlet 7212. The entire process is a sealed conveying, preventing material spillage, dust, and pollution. Finally, the material is stably discharged from the feeding outlet 7212 and falls into the collection hopper 73 below, completing the quantitative conveying operation of a single raw material. This screw conveyor structure offers stable transmission, uniform feeding, and strong adaptability. The instantaneous and total feeding amounts can be precisely controlled by adjusting the motor speed. The conveying accuracy is far superior to manual feeding, enabling stable and precise proportioning and conveying of various mask raw materials. It is suitable for automated, standardized, and mass production mask manufacturing scenarios.

[0122] Reference Figure 4 In some embodiments, the mixing chamber 31 is further provided with a discharge port 312, and the discharge port 312 is provided with a discharge valve 313; the controller 5 is also communicatively connected to the discharge valve 313, and the controller 5 is configured to: after the real-time pH value of the mixture reaches the target pH value of the face mask and the feeding stops, open the discharge valve 313 to discharge the finished product.

[0123] Specifically, when the controller 5 determines that the real-time pH value of the mixture has reached the target pH value of the face mask input by the user, such as 5.5, and both the third and fourth valves are closed, the controller 5 sends an opening signal to the discharge valve 313. The discharge valve 313 can be a solenoid valve or a pneumatic butterfly valve. After opening, the finished face mask in the mixing chamber 31 is discharged into the externally connected face mask mold 8 through the discharge port 312 under the action of gravity or driven by the pump. After the discharge valve 313 is fully open, the controller 5 keeps the mixing mechanism 33 running at a low speed to assist in the discharge and prevent material deposition. After the discharge continues for 30 seconds, the controller 5 closes the discharge valve 313, the mixing mechanism 33 stops running, and a single face mask preparation cycle is completed.

[0124] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A facial mask preparation device, characterized in that, include: An electrolysis unit for electrolyzing water to produce acidic and alkaline water; The buffer unit includes an acid water chamber and an alkaline water chamber for storing the acidic water and the alkaline water, respectively. A mixing unit includes a mixing chamber and a pH detection unit for detecting the pH value of the mixture in the mixing chamber, wherein the mixing chamber is provided with a base material inlet; An infusion unit is connected to the stirring chamber, and the stirring chamber is selectively connected to the acid water chamber or the alkaline water chamber through the infusion unit; as well as The controller is communicatively connected to the pH detection unit and the infusion unit. The controller is configured to: based on the deviation direction between the real-time pH value detected by the pH detection unit and the target pH value of the mask, control the infusion unit to deliver the liquid in the acidic water chamber or the alkaline water chamber to the mixing chamber, so as to adjust the pH value of the mixture to the target pH value.

2. The facial mask preparation apparatus according to claim 1, characterized in that, The electrolysis unit includes an electrolytic cell, and a diaphragm is provided inside the electrolytic cell to divide the interior of the electrolytic cell into an anode chamber and a cathode chamber. The anode chamber is used to generate the acidic water, and the cathode chamber is used to generate the alkaline water. The anode chamber is selectively connected to the acid water chamber via a first drain valve, and the cathode chamber is selectively connected to the alkali water chamber via a second drain valve. The controller is also communicatively connected to the first drain valve and the second drain valve, and the controller is configured to control the first drain valve and the second drain valve to close during electrolysis, so that the electrolytic cell can be electrolyzed in a closed manner.

3. The facial mask preparation apparatus according to claim 2, characterized in that, A pH sensor is respectively installed on the cathode chamber and the anode chamber. The pH sensor is communicatively connected to the controller and is used to measure the real-time pH value of the acidic water and the alkaline water. The controller is also configured to determine the target value of the acidic water and the target value of the alkaline water based on the target pH value of the face mask. If the target pH value of the face mask is less than 7, when the real-time pH value of the acidic water reaches the target pH value of the acidic water, the controller opens the first drain valve and the second drain valve. If the target pH value of the face mask is greater than 7, when the real-time pH value of the alkaline water reaches the target value of the alkaline water, the controller opens the first drain valve and the second drain valve. If the target pH value of the face mask is 7, when the real-time pH value of the acidic water reaches the target value of the acidic water or the real-time pH value of the alkaline water reaches the target value of the alkaline water, the controller opens the first drain valve and the second drain valve.

4. The facial mask preparation apparatus according to claim 2, characterized in that, The mask preparation device further includes a parameter acquisition unit for acquiring the operating parameters of the electrolysis unit, and the parameter acquisition unit is communicatively connected to the controller; The controller is also configured to: determine the target values ​​of acidic water and alkaline water based on the target pH value of the face mask; and determine the real-time pH values ​​of the acidic water and the alkaline water based on the operating parameters. If the target pH value of the face mask is less than 7, when the real-time pH value of the acidic water reaches the target pH value of the acidic water, the controller opens the first drain valve and the second drain valve. If the target pH value of the face mask is greater than 7, when the real-time pH value of the alkaline water reaches the target value of the alkaline water, the controller opens the first drain valve and the second drain valve. If the target pH value of the face mask is 7, when the real-time pH value of the acidic water reaches the target value of the acidic water or the real-time pH value of the alkaline water reaches the target value of the alkaline water, the controller opens the first drain valve and the second drain valve.

5. The facial mask preparation apparatus according to claim 4, characterized in that, The parameter acquisition unit is used to detect the electrolysis current of the electrolysis unit; The controller is configured to determine the real-time pH value of the acidic water and the pH value of the alkaline water based on the electrolysis current and a pre-stored mapping relationship between the electrolysis current and the pH value of the product water.

6. The facial mask preparation apparatus according to any one of claims 1 to 5, characterized in that, The infusion unit includes an acid water supply branch and an alkaline water supply branch. The acid water supply branch connects the acid water chamber to the mixing chamber, and the alkaline water supply branch connects the alkaline water chamber to the mixing chamber. Both the acid water supply branch and the alkaline water supply branch are equipped with a supply control valve. The controller is communicatively connected to the supply control valve to control the on / off state or opening degree of each supply control valve.

7. The facial mask preparation apparatus according to claim 6, characterized in that, When adjusting the pH value of the mixture, the controller is also configured to determine the amount of feed added to the infusion unit based on the pH value of the acidic water in the acidic water chamber and the pH value of the alkaline water in the alkaline water chamber, so as to control the amount of acidic water or alkaline water added.

8. The facial mask preparation apparatus according to any one of claims 1 to 5, characterized in that, The mask preparation apparatus further includes a base material supply mechanism, which comprises: At least two raw material containers; Screw conveyor assemblies corresponding to each of the aforementioned raw material containers; and Material collection hopper; Each of the screw conveyor components is used to quantitatively convey the raw materials in the corresponding raw material container to the collection hopper, and the collection hopper is connected to the base material inlet; each of the screw conveyor components is electrically connected to the controller, and the controller is further configured to control each of the screw conveyor components to convey raw materials to the mixing chamber according to the formula ratio.

9. The facial mask preparation apparatus according to claim 8, characterized in that, The screw conveyor assembly includes a housing, a screw conveyor rod, and a drive motor; the screw conveyor rod is rotatably disposed inside the housing, and the drive motor is connected to the screw conveyor rod in a transmission connection; the housing has an inlet and a outlet, the inlet is connected to the discharge port of the corresponding raw material container, and the outlet faces the hopper.

10. The facial mask preparation apparatus according to any one of claims 1 to 5, characterized in that, The mixing chamber is also provided with a discharge port, and the discharge port is provided with a discharge valve; the controller is also communicatively connected to the discharge valve, and the controller is configured to: after the real-time pH value of the mixture reaches the target pH value of the face mask and the feeding stops, open the discharge valve to discharge the finished product.

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