空压机分类
Classification of air compressor
2、按润滑方式可分为无油空压机和机油润滑空压机。
2. According to the lubrication mode, it can be divided into oil-free air compressor and oil lubricated air compressor.
3、按性能可分为：低噪音、可变频、防爆等空压机。
3. According to the performance can be divided into: low noise, variable frequency, explosion-proof air compressor.
4、按用途可分为：冰箱压缩机、空调压缩机、制冷压缩机、油田用压缩机、天然气加气站用、凿岩机用、风动工具、车辆制动用、门窗启闭用、纺织机械用、轮胎充气用、塑料机械用压缩机、矿用压缩机、船用压缩机、医用压缩机、喷砂喷漆用。
4. It can be divided into refrigerator compressor, air conditioning compressor, refrigeration compressor, oil field compressor, natural gas filling station, rock drill, pneumatic tool, vehicle brake, door and window opening and closing, textile machinery, tire inflation, plastic machinery compressor, mining compressor, marine compressor, medical compressor, sand blasting and painting.
5、按型式可分为：固定式、移动式、封闭式。
5. According to the type, it can be divided into fixed type, mobile type and closed type.
容积式压缩机——直接依靠改变气体容积来提高气体压力的压缩机。
Positive displacement compressor -- a compressor that directly depends on changing the gas volume to increase the gas pressure.
活塞式压缩机——是容积式压缩机，其压缩元件是一个活塞，在
Piston compressor is a positive displacement compressor whose compression element is a piston
活塞式空气压缩机
Piston air compressor
活塞式空气压缩机气缸内做往复运动。
Reciprocating motion is done in the cylinder of piston air compressor.