As an accessory equipment of the clean room, the pass box is mainly used for the transmission of this small item between the clean room , and the unclean area , so as to reduce the frequency of opening and closing the clean room and minimize the environmental pollution of the clean room. The pass box is widely used in small high-tech, laboratories, pharmaceutical companies, hospitals, outpatient clinics, food processing industry, LCD, factories and other places where air filtration is necessary.
What is the materials of pass box ?
Pass box according to the different materials of the box can be divided into: stainless steel pass box, stainless steel transfer window inside the outer steel plate. Common plates for the production of pass box are cold-rolled steel plates (A3 plates) and stainless steel (SUS201, SUS304, SUS316, etc.). The thickness of the transfer window is generally 0.8~1.5mm. The pass box is composed of a left box, a right box (interlocking device is installed in the box), an upper box, a lower box, an inner wall, a UV sterilizing lamp, and a double door structure of the pass box.
The pass box is mainly used for the transfer of small items between clean areas and clean areas, clean areas and unclean areas to reduce the number of clean room doors and minimize cross-contamination between clean areas
How does dynamic pass box work ?
Stainless steel clean pass box in the transfer of goods, the top blow out a high-speed, clean air, blow the dust particles on the surface of the goods, the interior is equipped with ultraviolet sterilization lamp, can effectively kill the bacteria on the surface of the goods, to be completed when the blow, can open another door to take away the goods. The clean air flow acts as an airlock so that the air outside the clean room does not affect the cleanliness of the room.
The doors on both sides of the stainless steel clean pass box cannot be opened at the same time through electronic chain control, and the inner side of the two sides of the door is equipped with a seal to transfer the air tightness of the stainless steel clean pass box. Stainless steel clean transfer window is a kind of auxiliary equipment for clean rooms, mainly used for the transfer of small items between clean areas and clean areas, and between clean areas and non-clean areas, in order to reduce the number of clean room doors and minimize the pollution of clean rooms.
How to install and maintain the pass box ?
Select a convenient location on the wall, and then open the hole, the hole is generally about 10MM larger than the outer diameter of the stainless steel clean transfer window, put the stainless steel clean transfer window into the wall, generally installed in the middle of the wall, maintain a balance and fix, use rounded corners or other decorative strips to decorate the gap between the stainless steel clean transfer window and the wall, glue sealing modification can be done.
When used, first open a door, put the object to be passed into the box, at this time the door is not open through the chain mechanism, and so on after closing the door to open the door to transfer the object to take away, complete the transfer work. Whether it is mechanical interlock or electronic interlock, stainless steel clean transfer window can only open a door, after the new installation of stainless steel clean pass box inside and outside to do a clean and sterilized, and then regular inspection and maintenance, to see if there is no interlock failure, sterilizing lamp is damaged, general sterilizing lamp is vulnerable.
The application of pass box in the cleanroom project
The pass box is an auxiliary purification equipment in the construction of the purification project. In order to reduce the way of transferring items set up because of the number of doors, it is used for the transfer of small items in the clean area and the unclean section of different clean levels, and plays the role of an airlock to effectively prevent external air from entering the clean room and reduce the cleanliness of the clean room. The air shower transfer window can be used to treat the pollutants on the surface of the item by blowing, and then brought into the clean area.
Structural features
1. The box body of the pass box is made of stainless steel plate, which can effectively avoid rust.
2. The two doors are interlocked with electronic interlocking device and cannot be opened at the same time.
3. Both doors are double-glazed, the surface is flat, not easy to accumulate dust, and easy to clean.
4. Both doors are embedded in the box, the outer surface is flat, easy to clean and not easy to accumulate dust
5. The internal four-corner arc structure is easy to clean and disinfect.
6. Clean type is equipped with differential pressure detection and filter integrity detection interface.
7. Double-door pneumatic seal, display and record the sterilization time and ozone concentration curve.
