The role of installing clean doors and windows in purification workshop

Clean doors and windows are the core components of purification workshop envelope, which are different from ordinary doors and windows. In terms of materials, sealing and structural design, they are built around the three core objectives of maintaining a clean environment, ensuring production safety and meeting industry norms. They are the key facilities to achieve workshop cleanliness level, pressure difference control and pollution isolation. The specific functions are as follows:

First of all, efficient sealing and blocking the infiltration of pollutants are the core functions of cleaning doors and windows. Purification workshop has extremely high requirements for air tightness, especially in the scenes of pharmaceutical GMP workshops and electronic clean rooms. It is necessary to strictly prevent dust particles and microorganisms from infiltrating with the air in unclean areas. Clean doors and windows adopt tongue-and-groove sealing structure, with silicone or EPDM sealing strip, and the door frame is closely attached to the door leaf, which can effectively isolate external pollutants such as dust, odor and bacteria; At the same time, the sealing design at the crack of the door can reduce the air convection between the clean area and the unclean area, and avoid destroying the cleanliness balance in the workshop due to air flow exchange. Compared with ordinary doors and windows, the sealing performance of clean doors and windows can reduce the leakage air volume by more than 90%, providing a stable clean environment for precision production.

Secondly, cleaning doors and windows is an important guarantee to maintain the pressure difference balance in the workshop. Purification workshop needs to maintain a positive pressure state (usually the pressure difference is 10-20Pa) in the clean area relative to the non-clean area to prevent the outside air from flowing backwards. The airtightness of clean doors and windows can reduce the air leakage in clean area, reduce the load of air conditioning purification system, and stably maintain the set pressure difference between mopeds. In addition, some clean doors and windows are equipped with adjustable pressure relief devices. When the workshop pressure difference is too high, the pressure relief valve will automatically open to avoid the deformation of doors and windows due to excessive pressure. When the pressure difference is too low, it automatically closes to ensure the stability of the pressure difference. This dynamic adjustment ability cannot be realized by ordinary doors and windows.

Thirdly, clean doors and windows have the characteristics of corrosion resistance, easy cleaning and dust prevention, which are suitable for the special production environment in purification workshop. The door leaf and door frame are mostly made of 304 or 316 stainless steel, with smooth surface, no dead angle and no groove, which is not easy to absorb dust and breed bacteria. It can withstand the wiping and cleaning of disinfectants and acid-base solutions and meet the requirements of aseptic production in medicine and food industries. At the same time, stainless steel is corrosion-resistant and wear-resistant, and its service life is far longer than that of ordinary aluminum alloy or plastic steel doors and windows, and it can adapt to the high temperature, high humidity or corrosive gas environment in the workshop.

Fourth, clean doors and windows can ensure the safe passage of people and materials, giving consideration to production efficiency and environmental protection. The clean door is designed with two-way opening, anti-collision and rebound functions. When people or materials pass by, the door leaf can automatically rebound and reset to avoid sealing failure caused by collision. Some clean doors are equipped with electronic interlocking devices, which are linked with the air shower room and the transfer window to ensure that people cannot enter the clean area before completing the purification process and prevent the pollution risk caused by human operation. The clean observation window is made of double-layer hollow tempered glass, which has high light transmittance and impact resistance. It is not only convenient for workers to observe the production status in the workshop, but also can isolate external pollution. At the same time, it has good sound insulation effect and reduces noise interference inside and outside the workshop.

Finally, the installation of clean doors and windows meets the requirements of industry norms and certification. In medicine, medical devices, electronic semiconductors and other industries, the construction of purification workshop needs to pass GMP, ISO14644 and other standards certification, and clean doors and windows, as the key components of the enclosure system, must meet the certification indicators in terms of material, sealing and structural design. It is a necessary prerequisite for purification workshop to pass the acceptance and obtain the production qualification to select clean doors and windows that meet the requirements and standardize their installation.

To sum up, clean doors and windows are not only the traffic facilities in purification workshop, but also the core components to ensure the stability of clean environment and meet production compliance, which plays an irreplaceable role in improving product quality and reducing production risks.