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Workflow of VHP pass box
Workflow of VHP pass box(I) System transfer and sterilization stepsPlace the material barrel on the carrier push it into the transfer cabin and close the door. When the material barrel is placed on the carrier, there is a gap of about 50mm between the barrels to ensure that the material barrel or container is exposed to the air to the maximum extent without leaving any sterilization dead corners. This design ensures that the transfer window can sterilize the material comprehensively and effectively. Start the built-in vaporized hydrogen peroxide sterilization generation system for sterilization, which is divided into four stages: preparation, vaporization, maintenance, and ventilation degradation. Preparation stage: Preheat the hydrogen peroxide generator to prepare for the subsequent sterilization process. This stage is crucial to ensure that the generator can start working in the best condition. Vaporization stage: After hydrogen peroxide drips into the evaporator, it quickly vaporizes into steam and sprays into the sterilization space until it reaches saturation. At this time, the hydrogen peroxide vapor will become a slightly condensed state, which has a strong killing effect on microorganisms. It is understood that at this stage, hydrogen peroxide can quickly diffuse into the entire transfer window to ensure that every corner can be fully sterilized. Maintenance stage: Hydrogen peroxide vapor is continuously injected into the space to maintain the saturated state, achieving continuous coverage of the sterilization surface and constant killing of microorganisms. This stage can ensure the durability of the sterilization effect and prevent the re-growth of microorganisms during the sterilization process. Ventilation and degradation stage: The concentration of hydrogen peroxide is reduced to a safe concentration by lyase; the ventilation process is the process of removing H2O2, and the final detection of H2O2 residual concentration is less than 1PPM. This stage ensures that the environment inside the transfer window is safe after the sterilization is completed, and will not cause harm to operators and subsequent materials. After the sterilization is completed, the clean area transfer door is opened to unload. (II) System configuration parameters and technical features Introduce equipment technical parameters, such as working power supply, power, dosage, etc. The equipment working power supply is AC220±10% 50Hz±1Hz, the power is 2500W, and the dosage is 1.5~10g/min. Gasification temperature ≤100℃, dehumidification humidity ≤75% RH, noise ≤70dB (A), high-efficiency filtration efficiency of 99.99%, H14 grade, sterilant is 30% analytical pure. Explain the technical features, including the low-temperature sterilization process, no residue, environmental protection, etc. Low-temperature sterilization process: The VHP pass box adopts a low-temperature sterilization process, which can achieve effective sterilization without changing the temperature and humidity in the transfer cabin during the sterilization process. This is a very important advantage for some materials that are sensitive to temperature and humidity. No residue: After the sterilization procedure is completed, there is no residue in the transfer window, and no secondary pollution will be caused to the material. This is due to its advanced ventilation degradation system, which can quickly discharge the residual hydrogen peroxide. Environmental protection: VHP has no toxic byproducts after sterilization, which is safe for the environment and human health. At the same time, the equipment has good penetration of high-efficiency filter HEPA, has a good sterilization effect on a wide range of microorganisms, and requires a short time for sterilization. No consumables such as desiccant are required, and the consumption of hydrogen peroxide is small, which is very environmentally friendly and energy-saving. Explain the main functions, such as PLC programmable controller program automatic control, touch screen LCD human-machine dialogue interface, etc. VHP pass box has many main functions. PLC programmable controller program automatic control ensures the stability and reliability of equipment operation; touch screen LCD human-machine dialogue interface, humanized design, convenient for operators to use. In addition, it also has three-level administrator password entry, computer remote communication function (optional), UBS interface data export function (optional), automatic operation and manual operation mode, display date and clock function, temperature and humidity monitoring function, double door electronic interlocking function, pressure loss alarm function (sound and light signal), reserved high-efficiency filter PAO detection port and main data printing function. These functions make the operation of the equipment more convenient and safe and also improve the manageability and maintainability of the equipment. |
