How to choose a tank-sealed HEPA box combination?

At present, in a variety of clean environments, liquid tank-sealed hepa box is widely used. This kind of equipment is very common in laboratories, research institutions, and other units. So, what exactly is a tank-sealed HEPA box? From the perspective of its composition, the Hepa box includes a high-efficiency special plenum, a high-efficiency filter, and a diffuser orifice plate. The material of the plenum can be selected according to the requirements of stainless steel, galvanized sheet, or spray plate. As required, HEPA boxes can also be equipped with DOP detection ports and regulating valves with controlling devices. bacclean's long-produced tank-sealed high-efficiency air supply ports are usually equipped with DOP detection ports for easy inspection. In addition, HEPA filters can be customized to different air volume specifications according to the needs of various customers. The common forms are: mechanical seal without partition, mechanical seal with partition, and liquid tank seal without partition. In terms of material, aluminum alloy profiles, galvanized plate frames or stainless steel frames can be selected; The diffuser plate is available in two materials: spray plate and stainless steel plate.
The working principle of the liquid tank HEPA box is to obtain an ideal static pressure before the air passes through the HEPA filter, so as to achieve uniform air discharge from the HEPA filter. HEPA boxes equipped with PAO sol dust inlet ports, upstream concentration detection ports, differential pressure detection ports, and diffusion plates need to perform on-site leak detection to meet customer requirements.
Liquid tank type HEPA box working principle: Its purpose is to obtain an ideal static pressure before the air passes through the HEPA filter so that the high-efficiency filter air is uniform. HEPA boxes requiring on-site leak detection are equipped with PAO sol dust inlet and upstream concentration detection ports, as well as differential pressure detection ports and diffusion plates based on customer requirements.
Type: The sealing method is dry seal, wet seal, dry and wet double seal, the box material is cold rolled plate spray, 304 stainless steel, aluminum alloy, ABS plastic, stainless steel, aluminum alloy, and other types.
Air supply form: top air supply, side air supply.
Diffusion plate form: full hole diffusion plate, louver diffusion plate, swirl panel, etc.
High-efficiency filter (HEPA) usually refers to a filter that captures particles with a particle size greater than or equal to 0.3um and has a capture efficiency of more than 99.99%. It is commonly used as a terminal filtration unit in clean workshops of pharmaceutical companies to provide clean air. Whether the cleanroom can achieve and maintain the designed cleanliness level depends to a large extent on the performance and installation quality of the HEPA filter. Therefore, the leak test of the high-efficiency filter in the clean workshop to ensure that it meets the requirements is one of the important means to ensure a clean environment of the workshop. The FDA also states in its sterile drug manufacturing guidelines that leak testing should be performed after the HEPA filter is installed to test the tightness of the filter gasket, frame, and filter material. For the sterile preparation production workshop, the HEPA filter should be regularly tested for leakage.
Hepa filters are divided into non-leakage type non-partition high-efficiency filters and liquid tank type HEPA filters. The non-leakage type non-partition high-efficiency filter uses an aluminum profile as the outer frame and HV ultra-fine glass fiber paper as the filter element. It is mainly used for trapping particulate dust and various suspended solids below 0.5um. The filter material is made of ultra-fine glass fiber paper, and the partition board is made of offset paper, aluminum film, and other materials, and the wood frame aluminum alloy is glued together.
Gel seal HEPA filters, manufactured by Bacclean, have been tested by the nanometric method for high-efficiency filtration, low resistance, and high dust capacity. HEPA air filters can be widely used in optical electronics, LCD liquid crystal manufacturing, biopharmaceutical, precision instruments, beverage and food, PCB printing, and other industries of clean air purification workshop air supply end. HEPA filters and ultra-high efficiency filters are usually used at the end of clean rooms and can be divided into partition HEPA filters, mini-pleat HEPA filters, high air volume HEPA filters, and ultra-HEPA filters according to the structural form. In addition, there are three types of HEPA filters. The purification efficiency of the ultra-HEPA filter can reach 99.9995%. The antibacterial mini-pleat HEPA filter has antibacterial properties that prevent microorganisms from entering the clean shop. Subhepa filters have a lower cost and are usually used in places with low air purification requirements.