Laboratory air supply system can use oil-free air compressor

When the laboratory uses compressed air, it needs high-quality oil-free air. The "water-lubricated oil-free air compressor" produced by "Shanghai Grankering Group" can provide 100% oil-free "oil-free compressed air" for high-precision tests ".

In the laboratory ventilation equipment we can refer to the following:

basic concepts of 1. laboratory ventilation

the concept of ventilation and fume hood: The so-called ventilation is to add fresh air to the outdoor air directly or after purification, so as to maintain indoor air conditions, to maintain health standards and meet the requirements of the production process, we call the former exhaust, the latter is called air supply. The fume hood can be simply understood as a box and a fan, and the gas generated in the box is discharged by the fan and is safely discharged into the atmosphere.

2. Classification of ventilation: According to different power, ventilation system can be divided into natural ventilation and mechanical ventilation. Mechanical ventilation can be divided into comprehensive ventilation and local ventilation. Comprehensive ventilation refers to a way of ventilation in the whole room. Local ventilation refers to the ventilation mode in which the scope of ventilation is controlled in the place where harmful substances are relatively concentrated, or the ventilation mode in local areas where workers often move, for example, fume hoods, universal exhaust hoods, atomic absorption hoods, etc.

Construction composition of 2. laboratory ventilation system

laboratory ventilation system is generally composed of air supply system and exhaust system, including air supply/exhaust equipment, air supply/exhaust pipe system (including air supply/exhaust control equipment, etc.), muffler, filtering equipment, possible isolation protection equipment, fan, control system, etc.

3. Laboratory Ventilation System: Classification and Selection of Fans

1. Classification of fans: According to the air flow mode, fans are divided into three types: centrifugal (often placed outside the house), axial flow (often placed in the house) and mixed flow (oblique flow). According to the material classification, fans mainly include ordinary steel fans, stainless steel fans, PVC fans and glass fiber reinforced plastic fans.

2. ① The characteristics of axial flow fans are: low power consumption, low operating cost, but high noise, low fan pumping force (low wind pressure), suitable for simple systems, generally installed on the wall or pipeline; ② The characteristics of centrifugal fans are: high power consumption, high operating cost, high noise, large fan pumping force (high wind pressure), suitable for complex systems, mainly installed outdoors or on the roof; the characteristics of the diagonal flow fan are: power consumption, operating costs, fan suction between the first two, the noise is small, suitable for simple systems, generally installed in the room.