2026-04-10Views：
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.
Because of its particularity, the food industry has higher requirements for air compressors. Generally, such industries will choose oil-free screw air compressors as air sources. Oil-free air compressor in the food industry is mainly used for mixing liquid, bread fermentation tank natural gas, cleaning equipment with nozzles
There are many types of air compressors, which can be divided into two categories according to their working principles: positive displacement compressors and speed compressors. In the volumetric press machine, the increase of gas pressure is caused by the volume of gas in the sub-press machine being reduced to make the density of air molecules per unit volume.
Single screw air compressor and twin screw air compressor difference in the world, in addition to the micro compressor, in the power with air compressor, more than 70% for the twin screw air compressor. Compared with the single screw air compressor, the performance of the new machine is not much different, mainly reflected in the performance difference after a period of use.
The full name of the air compressor is air compressor; a machine designed according to the working principle that the rotation of the twin screw (also known as the yin and yang rotor) changes the volume of the gas. It can inhale natural air, and then complete the work through several internal processes. The discharge meets the pressure requirements
In the field of food production, the quality of compressed air is directly related to food safety and product quality. In view of the problem of "whether the air compressor in the food factory can use the micro-oil air compressor", it is necessary to advance from the aspects of food safety risk, regulatory requirements and industry practice.
qingdao air cooled air compressor price? qingdao air cooled air compressor price has conventional water cooled water lubrication air compressor and air cooled water lubrication air compressor two kinds, commonly used in qingdao is air cooled air compressor. The benefits of air cooling needless to say, simple maintenance, large air volume, and easy to clean up. For the screw air compressor, the simpler the structure, the easier the product maintenance!
View detailsAir compressor quotation needs professionals to match. Shanghai granklin group, a domestic air compressor manufacturer, is a professional air compressor factory integrating research and development, production and sales. In the air compressor quotation, we use professional knowledge and technical reserves to customize services from user needs to better serve users.
View detailsWhen the single screw is running, the screw and the star wheel have a speed difference, one-way compression, air is easy to compress, and the speed is low. The twin-screw is co-extrusion, which requires high speed, and the lubrication of water is not enough compared to the oil density, and the compressed air is easy to flow backwards. The lubrication part is water, pure water. Air contains absolutely no oil, but it contains water. In the field of high gas quality requirements, such as textile, metallurgy, food, chemical industry, petroleum and air separation and other places that need pure oil-free compressed air, oil-free screw compressor can provide high-quality compressed gas to meet various needs, so the application prospect is broad.
The first guarantee is usually 500 hours, that is, the first maintenance of the machine running-in. The first guarantee is relatively simple. It is good to replace the oil and filter. After the maintenance is generally about 2500-3000 hours, but also related to the air compressor site environment, if the site environment
Granklin screw air compressor without oil and water lubrication 1. The oil-free design adopts water lubrication, the design of all stainless steel main machine and high-precision processing technology make water become the core of the well-deserved oil-free compressor; 2. The main machine adopts medical 304 stainless steel precision high-pressure casting, which will never rust; 3. Fully computer-controlled automatic water supplement system, all-round system operation detection, and completely oil-free exhaust quality, let the oil-free air flow;
View details
2018 Granklin Group. All rights reserved 沪ICP备18000439号-2
