An electronic-grade hydrogen peroxide membrane ultrafiltration device
By designing a hydrogen peroxide membrane ultrafiltration device with a cleaning mechanism and a return chamber, and using water flow to drive the cleaning mechanism to rotate, the problems of production interruption and increased costs caused by downtime cleaning in existing technologies are solved, achieving efficient and energy-saving membrane cleaning and filtration performance maintenance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 河南亿丰电子新材料有限公司
- Filing Date
- 2025-07-31
- Publication Date
- 2026-07-03
AI Technical Summary
Existing electronic-grade hydrogen peroxide membrane ultrafiltration devices require shutdown when cleaning the ultrafiltration membrane, which affects production efficiency and increases maintenance and labor costs. Furthermore, the accumulation of impurities and contaminants on the membrane affects filtration performance.
Design a device that includes an ultrafiltration cartridge, an ultrafiltration membrane, a cleaning mechanism, a reflux chamber, and valves. The cleaning mechanism is driven to rotate by the flow of hydrogen peroxide, enabling cleaning of the ultrafiltration membrane without shutting down the machine. Impurities and contaminants enter the reflux chamber and are intercepted by the filter plates. During cleaning, the valves are closed to lower the water level and the filter plates are extracted for cleaning.
It enables cleaning of ultrafiltration membranes without shutting down the machine, improving production efficiency, reducing maintenance and labor costs, ensuring membrane filtration performance, simplifying equipment structure, and saving energy and protecting the environment.
Smart Images
Figure CN224442667U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electronic chemical raw material production, specifically to an electronic-grade hydrogen peroxide membrane ultrafiltration device. Background Technology
[0002] The electronic-grade hydrogen peroxide membrane ultrafiltration device is a type of equipment used to produce electronic-grade hydrogen peroxide. It employs ultrafiltration membrane separation technology to remove impurities and particles from the hydrogen peroxide, thereby obtaining high-purity hydrogen peroxide. This device has advantages such as high-efficiency filtration, simple operation, small footprint, and convenient maintenance, and is widely used in the electronics industry, semiconductor industry, pharmaceutical industry, and other fields.
[0003] After a period of operation, impurities and contaminants accumulate on the ultrafiltration membrane inside the ultrafiltration unit. These impurities and contaminants reduce the filtration performance of the ultrafiltration membrane. Existing electronic-grade hydrogen peroxide membrane ultrafiltration units typically use two common methods to clean the ultrafiltration membrane: online cleaning and offline cleaning. However, both methods require the ultrafiltration unit to be shut down to clean the membrane. In some large-scale industrial production, ultrafiltration units usually need to run continuously to meet production demands. If the unit needs to be shut down for cleaning, it will not only force other equipment on the production line to stop, causing production interruption and affecting production efficiency, but also increase equipment maintenance costs and labor costs. Utility Model Content
[0004] To address the shortcomings of existing technologies, this invention provides an electronic-grade hydrogen peroxide membrane ultrafiltration device. This solves the problem that cleaning the ultrafiltration membrane requires shutting down the ultrafiltration device, which affects production efficiency and increases maintenance and labor costs. Furthermore, impurities and contaminants gradually accumulate in the ultrafiltration membrane during operation, thus affecting its filtration performance.
[0005] Technical Solution: To achieve the above objectives, this utility model provides the following technical solution: An electronic-grade hydrogen peroxide membrane ultrafiltration device, comprising: multiple ultrafiltration cartridges for filtering impurities and contaminants in hydrogen peroxide; multiple ultrafiltration membranes located within the ultrafiltration cartridges for hydrogen peroxide filtration; multiple cleaning mechanisms located within the ultrafiltration cartridges for cleaning impurities and contaminants from the ultrafiltration membranes, wherein the cleaning mechanisms enclose the ultrafiltration membranes with gaps between them; a reflux chamber located between the ultrafiltration cartridges and connected to the ultrafiltration cartridges via a water guide pipe; a valve located on the water guide pipe for controlling the flow of hydrogen peroxide through the water guide pipe; the filter plate material can be polypropylene (PP), polyethylene (PE), etc., and the pore size of the filter plates can be 160-250 micrometers, 100-160 micrometers, 70-100 micrometers, etc.; wherein the ultrafiltration cartridges, ultrafiltration membranes, and cleaning mechanisms are located on the same vertical center line, and the cleaning mechanisms are rotatably connected to the ultrafiltration cartridges.
[0006] In a further embodiment, a feed cylinder is used to introduce hydrogen peroxide into the ultrafiltration cartridge, and the feed cylinder is connected to the reflux chamber through a water guide pipe; an outlet cylinder is used to discharge the filtered hydrogen peroxide.
[0007] In a further embodiment, a one-way valve is located on the water guide pipe between the reflux chamber and the feed cylinder, and the one-way valve is used to restrict hydrogen peroxide from entering the reflux chamber from the feed cylinder.
[0008] In a further embodiment, the blades are connected to the cleaning structure by welding or integral molding.
[0009] In a further embodiment, the cleaning component is connected to the cleaning structure by welding or integral molding.
[0010] In a further embodiment, the blades are spiral-shaped and evenly distributed on the cleaning mechanism.
[0011] In a further embodiment, the filter plate is located below the inlet of the recirculation chamber, and the filter plate divides the recirculation chamber into upper and lower parts.
[0012] Beneficial effects: 1. Through the cooperation of various parts on the device, the ultrafiltration membrane can be cleaned without stopping the machine. During cleaning, the ultrafiltration membrane is cleaned by the cleaning mechanism, and the cleaned impurities and contaminants are carried into the reflux chamber. Then, they are intercepted by the filter plate in the reflux chamber. After that, the valve is closed and the liquid level in the reflux chamber is lowered below the filter plate. Then the filter plate is pulled out and cleaned. After that, the cleaned filter plate is reinstalled in its original position, and then the valve is opened again.
[0013] By utilizing the flow of hydrogen peroxide to drive the rotation of the cleaning mechanism, impurities and contaminants on the ultrafiltration membrane are removed in real time. This automatic cleaning method requires no additional power source, simplifying the equipment structure and reducing operating costs. Furthermore, because the cleaning mechanism constantly rotates within the ultrafiltration cartridge, it promptly removes impurities and contaminants adhering to the ultrafiltration membrane, preventing their accumulation and ensuring that the ultrafiltration membrane's filtration performance remains consistently optimal. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in this utility model or the prior art, 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 utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 This is a schematic diagram of the structure of this utility model.
[0016] Figure 2 for Figure 1 A cross-sectional structural diagram.
[0017] Figure 3 for Figure 1 A schematic diagram of the side section structure.
[0018] Figure 4 for Figure 1 A top-down sectional view of the structure.
[0019] Figure 5 This is a schematic diagram of the cleaning mechanism.
[0020] Figure 6 for Figure 2 A schematic diagram of the structure at point A.
[0021] Figure 7 for Figure 3 A schematic diagram of the structure at point B.
[0022] Figure 8 for Figure 4 A schematic diagram of the structure at point C.
[0023] The reference numerals in the figure are as follows: 1. Feed cylinder; 2. Ultrafiltration cylinder; 201. Valve; 3. Reflux chamber; 301. Filter plate; 4. Discharge cylinder; 5. Check valve; 6. Cleaning mechanism; 601. Paddle; 602. Cleaning component; 7. Ultrafiltration membrane. Detailed Implementation
[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in this utility model are described clearly and completely. Obviously, the described embodiments are only some, not all, of the embodiments in this utility model. All other embodiments obtained by those skilled in the art based on the embodiments in this utility model without creative effort are within the scope of protection of this utility model.
[0025] This application provides an electronic-grade hydrogen peroxide membrane ultrafiltration device, which solves the problem that cleaning the ultrafiltration membrane requires shutdown, and that the accumulation of impurities and contaminants on the ultrafiltration membrane affects its filtration performance. In practical use, it achieves the goal of cleaning the ultrafiltration membrane without shutting down the system, while avoiding the gradual accumulation of impurities and contaminants during ultrafiltration membrane operation, thus preventing its filtration performance from being affected.
[0026] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.
[0027] Reference Figure 1-8An electronic-grade hydrogen peroxide membrane ultrafiltration device includes: multiple ultrafiltration cartridges 2 for filtering impurities and contaminants in hydrogen peroxide; multiple ultrafiltration membranes 7 located within the ultrafiltration cartridges 2 for hydrogen peroxide filtration; multiple cleaning mechanisms 6 located within the ultrafiltration cartridges 2 for cleaning impurities and contaminants on the ultrafiltration membranes 7, wherein the cleaning mechanisms 6 enclose the ultrafiltration membranes 7 with a gap between them; a reflux chamber 3 located between the ultrafiltration cartridges 2 and connected to the ultrafiltration cartridges 2 via a water guide pipe; a valve 201 located on the water guide pipe for controlling the flow of hydrogen peroxide through the water guide pipe; and a filter plate 301 located within the reflux chamber 3 for removing impurities from the hydrogen peroxide in the reflux chamber 3, wherein the filter plate 301 is slidably connected to the reflux chamber 3; wherein the ultrafiltration cartridges 2, ultrafiltration membranes 7, and cleaning mechanisms 6 are on the same vertical centerline, and the cleaning mechanisms 6 are rotatably connected to the ultrafiltration cartridges 2.
[0028] Through the cooperation of the various parts and structures mentioned above, it is possible to clean the ultrafiltration membrane 7 without stopping the machine, thereby avoiding the impact on its production efficiency and the increase in equipment maintenance and labor costs when cleaning the ultrafiltration membrane 7.
[0029] Feed cylinder 1 is used to introduce hydrogen peroxide into ultrafiltration cylinder 2. Feed cylinder 1 is connected to reflux chamber 3 through water guide pipe; discharge cylinder 4 is used to discharge filtered hydrogen peroxide.
[0030] Unfiltered hydrogen peroxide can be added into the ultrafiltration cartridge 2 through the feed cylinder 1; filtered hydrogen peroxide can be discharged from the ultrafiltration cartridge 2 through the discharge cylinder 4.
[0031] A one-way valve 5 is located on the water guide pipe between the reflux chamber 3 and the feed cylinder 1, and the one-way valve 5 is used to restrict hydrogen peroxide from entering the reflux chamber 3 from the feed cylinder 1.
[0032] The one-way valve 5 can prevent unfiltered hydrogen peroxide from directly entering the return chamber 3 at the feed cylinder 1.
[0033] Multiple blades 601 are provided, and the blades 601 are located on the cleaning mechanism 6. One side of the blades 601 is connected to the cleaning mechanism 6, and the other side is in contact with the inner wall of the ultrafiltration cartridge 2.
[0034] The blade 601 allows the cleaning structure to rotate using the thrust generated by the flow of unfiltered hydrogen peroxide.
[0035] Multiple cleaning components 602 are provided, and the cleaning components 602 are located on the cleaning mechanism 6. One side of the cleaning component 602 is connected to the cleaning component 602, and the other side is in contact with the ultrafiltration membrane 7.
[0036] The cleaning component 602 can be used to clean the ultrafiltration membrane 7.
[0037] The blades 601 are spiral-shaped and evenly distributed on the cleaning mechanism 6.
[0038] The spiral blade 601 can better utilize the thrust generated when unfiltered hydrogen peroxide flows.
[0039] The filter plate 301 is located below the water inlet of the reflux chamber 3.
[0040] The filter plate 301 is located below the inlet of the return chamber 3, so that when unfiltered hydrogen peroxide enters the return chamber 3, it will be above the filter plate 301, making it easier to filter.
[0041] During operation, unfiltered hydrogen peroxide is injected into the ultrafiltration cartridge 2 through the feed cylinder 1. Simultaneously, the injected hydrogen peroxide enters the return chamber 3 through the water guide pipe and returns to the feed cylinder 1 via the filter plate 301 and one-way valve 5 within the return chamber 3. This creates a flow of hydrogen peroxide. The injection pressure of the hydrogen peroxide controls the pressure inside the ultrafiltration cartridge 2, creating a pressure difference across the ultrafiltration membrane 7, thus achieving hydrogen peroxide filtration. The flow of hydrogen peroxide within the ultrafiltration cartridge 2 also generates thrust on the impeller 601, causing it to rotate the cleaning mechanism 6. This, in turn, causes the cleaning component 602 to rotate, effectively cleaning impurities and contaminants adhering to the ultrafiltration membrane 7. Because the cleaning device is rotated by water flow, The system no longer requires an external power source and continuously rotates within the ultrafiltration cartridge 2, thereby achieving real-time cleaning of the ultrafiltration membrane 7. This prevents impurities and contaminants from adhering to the ultrafiltration membrane 7 and affecting its filtration performance. The impurities and contaminants removed by the cleaning mechanism 6 enter the return chamber 3 via hydrogen peroxide flow and are intercepted by the filter plate 301 within the return chamber 3. When cleaning impurities and contaminants, the valve 201 is closed, and the hydrogen peroxide level in the return chamber 3 is reduced to below the filter plate 301. The filter plate 301 is then removed for cleaning. After cleaning, the filter plate 301 is reinserted, and the valve 201 is reopened, thus achieving the goal of cleaning the ultrafiltration membrane 7 without shutting down the machine.
[0042] The control device, pressure monitoring device, and power drive device required for the aforementioned ultrafiltration device are all existing technologies and are not essential technical features in this application. Therefore, they are not described or drawn in the documents and drawings of this application.
[0043] In summary, compared with existing technologies, this design offers the following advantages: By incorporating components such as a reflux chamber, water guide pipe, valves, and filter plates, ultrafiltration membrane cleaning and impurity filtration are achieved without shutting down the system. When cleaning the ultrafiltration membrane is required, simply close the valves, drain the hydrogen peroxide from the reflux chamber, and then remove the filter plates for cleaning. This design not only improves production efficiency but also reduces maintenance and labor costs. Furthermore, utilizing liquid flow for automatic and real-time cleaning of the ultrafiltration membrane eliminates the need for a complex power source to drive the cleaning device, reducing equipment cost and complexity while minimizing energy consumption. Simultaneously, the energy of the liquid flow itself is fully utilized, achieving energy conservation and environmental protection. Moreover, this self-driven approach tightly integrates the cleaning and filtration processes, eliminating the need for manual intervention and significantly improving the automation level and ease of operation of the equipment.
[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0045] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. An electronic grade hydrogen peroxide membrane ultrafiltration device, characterized by, include: The ultrafiltration cartridge (2) is provided in multiple forms to filter impurities and contaminants in hydrogen peroxide; Multiple ultrafiltration membranes (7) are provided and located inside the ultrafiltration cartridge (2) for hydrogen peroxide filtration; Multiple cleaning mechanisms (6) are provided and located inside the ultrafiltration cartridge (2) for cleaning impurities and contaminants on the ultrafiltration membrane (7). The cleaning mechanism (6) wraps the ultrafiltration membrane (7) and there is a gap between the cleaning mechanism (6) and the ultrafiltration membrane (7). The reflux chamber (3) is located between the ultrafiltration cartridges (2), and the reflux chamber (3) is connected to the ultrafiltration cartridges (2) through a water guide pipe; Valve (201), located on the water pipe, is used to control the flow of hydrogen peroxide through the water pipe; The filter plate (301) is located inside the reflux chamber (3) and is used to remove impurities from the hydrogen peroxide in the reflux chamber (3). The filter plate (301) is slidably connected to the reflux chamber (3). The ultrafiltration cartridge (2), ultrafiltration membrane (7) and cleaning mechanism (6) are located on the same vertical center line, and the cleaning mechanism (6) is rotatably connected to the ultrafiltration cartridge (2).
2. The electronic-grade hydrogen peroxide membrane ultrafiltration device according to claim 1, characterized in that, Also includes: The feed cylinder (1) is used to introduce hydrogen peroxide into the ultrafiltration cartridge (2), and the feed cylinder (1) is connected to the reflux chamber (3) through a water guide pipe; The discharge cylinder (4) is used to discharge the filtered hydrogen peroxide.
3. An electronic grade hydrogen peroxide membrane ultrafiltration device according to claim 2, characterized in that, Also includes: A one-way valve (5) is located on the water guide pipe between the reflux chamber (3) and the feed cylinder (1), and the one-way valve (5) is used to restrict hydrogen peroxide from entering the reflux chamber (3) from the feed cylinder (1).
4. The electronic grade hydrogen peroxide membrane ultrafiltration device according to claim 1, characterized in that, Also includes: Multiple blades (601) are provided, and the blades (601) are located on the cleaning mechanism (6). One side of the blades (601) is connected to the cleaning mechanism (6), and the other side is in contact with the inner wall of the ultrafiltration cartridge (2).
5. The electronic grade hydrogen peroxide membrane ultrafiltration device according to claim 1, characterized in that, Also includes; Multiple cleaning components (602) are provided, and the cleaning components (602) are located on the cleaning mechanism (6). One side of the cleaning component (602) is connected to the cleaning component (602), and the other side is in contact with the ultrafiltration membrane (7).
6. The electronic-grade hydrogen peroxide membrane ultrafiltration device according to claim 4, characterized in that: The blades (601) are spiral-shaped and evenly distributed on the cleaning mechanism (6).
7. The electronic grade hydrogen peroxide membrane ultrafiltration device according to claim 1, characterized in that: The filter plate (301) is located below the inlet of the reflux chamber (3).