The Role and Characteristics of the Pass Box

As an important auxiliary equipment of clean room, pass box plays an indispensable role in the field of modern industrial production and scientific research and testing. It is mainly used to transfer small items between different clean areas, effectively preventing non-clean air from entering the clean room and ensuring the stability and efficiency of the clean environment.

General pass box	Self-cleaning pass box	Air shower pass box

I. The basic concept of pass box

Pass box is a kind of equipment specially designed for transferring small items between different clean areas. It has the role of the airlock, can prevent the entry of non-clean air in the transfer process. In addition, the air shower pass box also has the function of blowing shower, which can blow shower on the surface of the transferred items to further prevent dust and other pollutants from entering the clean room. This equipment is widely used in the pharmaceutical, food, electronics, precision machinery and other industries, and has become one of the key equipments to ensure the stability of product quality and process environment.

II. The role of the pass box

First of all, the pass box can reduce the number of times the door of the clean area is opened, thus reducing the risk of outside contamination of the clean room. Through the pass box to pass items, you can avoid frequent opening of the clean room door caused by air flow and dust diffusion.

Secondly, pass boxes are mainly used to transfer small materials between different levels of clean rooms. This transfer method ensures that the items will not be contaminated by the outside world during the transfer process, which guarantees the cleanliness of the clean room and the quality of the products.

In addition, the pass box also has the function of preventing the unclean air of the low-level clean room from entering the high-level clean room when transferring materials, thus greatly reducing the degree of pollution in the clean room.

III. Classification

Pass box can be divided into standard pass box and clean pass box (with air self-purification device). Standard pass box is mainly used for general clean area of the goods transfer, and clean transfer window is equipped with air self-purification device, you can filter and purify the air at the same time in the transfer of goods, to further improve the cleanliness of the clean room.

According to the interlocking form of the door, the transfer window can be divided into mechanical interlocking and electronic interlocking two kinds. Mechanical interlocking through the mechanical structure to achieve interlocking between the two doors, easy to operate but relatively low security; while electronic interlocking using an electronic control system to achieve interlocking of the door, with a high degree of security and reliability.

IV. Pass box shell material

Common shell materials include colour steel plate type, thin steel spraying type (or baking paint type) and all stainless steel type.

Colour steel plate type pass box is beautiful in appearance and low cost; thin steel plate plastic spraying type or baking paint type pass box has better anti-corrosion performance and durability; all stainless steel type pass box has higher corrosion resistance and cleanliness, suitable for occasions with very high requirements for cleanliness.

In terms of size, the pass box usually has a universal size, convenient for users to choose according to actual needs. At the same time, in order to meet the special needs of different users, we can also make special specification according to user requirements.

As an auxiliary equipment of clean room, pass box has a wide range of applications in industrial production and scientific research and experiment field. SNYLI has been in the field of air purification for more than ten years, can provide customers with one-stop solution for air purification, welcome your inquiry!