What are the types of vacuum bellows
vacuum bellows basic types:
According to the shape of the wave, it can be divided into two categories: spiral bellows and annular bellows: spiral bellows is a tube-shaped shell with spirally arranged waves. There is a helix angle between the ripple and the ripple, and all the corrugations can be connected by a spiral line; the annular corrugated pipe is a pipe-shaped shell with closed circular waves, and the corrugations are connected by circular waves The lines are connected in series.
Because of the same waveform, annular bellows can be divided into U-shaped, C-shaped, S-shaped, V-shaped and q-shaped bellows. In order to improve the cutting capacity, the multi-layer bellows and the bellows with stiffeners in the middle are continuously developed.
Bellows can be divided into metal bellows and non-metallic bellows according to their materials
Metal bellows include metal bellows, bellows expansion joints and metal corrugated hose. Metal bellows are used as a component of bellows elastic components by bellows manufacturers. According to the processing technology, it can be divided into hydraulic forming bellows, welding forming bellows, electrodeposited bellows, nuclear rubber forming bellows, spinning forming bellows, pressing forming bellows and mechanical expanding bellows, etc.
Non metallic bellows include quartz bellows, rubber bellows, polyester bellows and plastic bellows. Nonmetallic bellows have the advantages of corrosion resistance, heat resistance and aging resistance. Among them, the bellows made of quartz, rubber, polyester and PTFE in plastic bellows are generally used as part of elastic components, mainly to complete measurement, connection, compensation, sensing, sealing, shock absorption and other functions.