The pass box may be quite familiar, but the term ‘dynamic pass box’ is still relatively new to many people.
Pass box dynamic
Pass box is a general term used to refer to cleanroom transfer boxes, cleanroom transfer cabinets, and cleanroom transhipment boxes. Specifically, their role is to transport and transfer items into the cleanroom. In fact, pass boxes are divided into two common types: dynamic pass box and static pass box.
Dynamic pass box is a type of box used to transport various goods and items between an unclean environment and a clean environment. It is often referred to as a “self-cleaning cleanroom transfer box” or “self-cleaning passbox”, “dynamic pass box.” It is designed with specialized components to blow off dust and clean the items thoroughly before transferring them into the cleanroom.
Classification, Structure, and Operating Principle of Dynamic Pass Box
Classification of Dynamic Pass Box
Similar to static pass boxes, dynamic pass boxes are classified based on their interlocking mechanisms. Additionally, they can be further categorized as either laminar flow pass boxes or air shower pass boxes.
Laminar Flow Pass Box: This type can meet high standards by creating vertical airflow (laminar flow) and achieving a high level of cleanliness. Therefore, it filters out dirt from the items before transferring them inside the cleanroom.
Air Shower Pass Box: It is equipped with an air shower system that play the role of blowing off dirt and particles adhering to the surface of the items.
Structure of Dynamic Pass Box
The structure of a self-cleaning pass box includes essential components such as a control panel, pressure gauge, interlocking mechanism, HEPA filter, pre-filter, door handles, and UV disinfection light.
A fan is responsible for pushing clean air into the dynamic pass box. Before reaching the fan, the air passes through a pre-filter to remove larger particles and then proceeds to the HEPA filter, which cleans the air thoroughly. Finally, the filtered air is dispersed inside the box through an air grille.
The main body of the pass box contains power sockets, control switches, and electronic interlocking systems. This part is typically made of stainless steel 304. The pass box door is designed with a handle, door gaskets, and tempered glass.
The interlocking mechanism plays a crucial role in preventing cross-contamination between clean and unclean environments during item transfer. During the transportation process, items are disinfected using the UV disinfection light.
Operating Principle
Before items are brought into the cleanroom, they must pass through the dynamic pass box. Here, the dynamic components blow off dust using clean air filtered by the HEPA filter. After dust removal, the UV disinfection light is activated to eliminate bacteria for a specific period, and then the items are transferred into the cleanroom.
Operating Principles for Dynamic Pass Box
During the operation of any equipment, certain principles must be adhered to. Specifically, for the dynamic pass box:
- Ensure continuous power supply throughout the entire operation.
- Keep both the interior and exterior surfaces clean by regularly wiping with non-linting dust cloths and completely eliminating bacteria.
- Ensure that both doors of the dynamic pass box are tightly closed.
- Check the proper functioning of internal equipment (UV disinfection light, interlocking system).
- Start the fan system and check the pressure gauge readings to ensure the filters are working correctly.
- Always prioritize cleanliness during the loading, transport, and unloading of items.
Attention should be paid to the design of cleanrooms, which should include a separate entrance for transporting goods and items. The movement of goods in and out, to transhipment stations before entering the cleanroom, should strictly adhere to the proper procedures and vice versa. During usage, it is essential to consider the lifespan and periodic maintenance of equipment to ensure optimal efficiency.
With the accomplishments made so far, the dynamic pass box is regarded as an indispensable component in the operation of cleanrooms. Especially in the current conditions, almost all cleanroom projects require the presence of a pass box. Their presence can easily be observed in various cleanroom applications such as hospital cleanrooms, laboratory cleanrooms, electronics cleanrooms, and food cleanrooms..
Currently, there are numerous providers of dynamic pass boxes in the market. However, careful consideration should be given before making a choice. For quality and reputable dynamic pass box products, customers can contact us – INTECH, for consultation and support.
INTECH Group Factory directly conducts research, manufacturing, and assembly of cleanroom equipment and Air Handling Units (AHU).
With many years of experience in consulting, supplying, and implementing cleanroom projects, we are committed to providing our customers with high-quality products and absolute satisfaction. With our expertise and practical experience, we will assist you in making the best choices!
– Air Handling Unit – AHU
– Air shower
– Pass box
– Clean Booth
– Blower Filter Unit (BFU)
– Fan Filter Unit (FFU)
– Fan Coil Unit – FCU
Come to Air Clean Tech to experience our quality services and products; customer satisfaction is always the foundation for our steady development.
