In the laboratory purification project, the effect of the air conditioner purification return air filter cannot be ignored. There are many factors that affect indoor air quality. The optimal planning of the system, fresh air volume, equipment functions, etc. can have an important impact on air quality. To improve indoor air quality, it is necessary to control every link of the air circulation. The filtering effect of the purifying return air outlet is an important part that is neglected. The return air outlet is one of the necessary devices in air conditioning and purification projects. In laboratory purification projects, because of its small cost and simple structure, it is difficult to attract the attention of planners and users. It is usually regarded as a small product, only Pay attention to its appearance and decoration effect and ignore its application function. In fact, the filter function of the return air outlet is one of the necessary conditions for keeping the air conditioner and purifying the environment in line with the requirements.

(1) Ground: Polyurethane coatings, epoxy resins, artificial leather, and terrazzo are mostly used for common ground materials to reduce dust generation on ground materials and improve the service life of ground materials. Anti-static wax water can be used for waxing. The wax surface is cleaned with an ultra-filtered industrial vacuum cleaner or a scrubber and dryer on the ground of the workshop.

(3) Wall: Wall materials are mostly made of materials with smooth surfaces, such as glass, color steel plates, plastic plates, aluminum plates, gusset plates, stainless steel plates, and dust-free rags and dust-free water wipers with strong adsorption can be used to wipe the surface. And it is handy to use with glass scrapers, elastic rods, tiger clips, etc. Ultrafiltration dust industrial vacuum cleaner can be used to vacuum the uneven places and inner corners.

Focus on laboratory stainless steel sinks、pharmaceutical clean room door and laboratory project etc.