Tham khảo tài liệu 'process engineering equipment handbook episode 3 part 5', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Pumps P-311 Flow - USGpm FIG. P-320 Hydraulic range chart Type VCR 8 . Source Sulzer Pumps. to the application of diffusion coatings or in advanced ion and plasma-type surfacing techniques. Vacuum pumps are used for drying distillation and evaporation. Lower boiling temperatures attained under vacuum preserve nutrients and improve taste quality and shelf life of products such as candies jams pharmaceuticals and many mild products. Deaeration is needed for products such as meat pastes sauces soups cellulose latex bricks tiles sewer pipes and pottery clay. Also vacuum conveyance of dangerous viscous contaminated powdery flaky bulky or simply hard-to-handle materials or products is used. The author remembers the ease and utter simplicity with which laminated plastic toothpaste tubes are transferred in partially P-312 Pumps FIG. P-321 Hydraulic range chart Type VCR 8 . Source Sulzer Pumps. evacuated transparent plastic pipes from the forming machine at one end of the plant to the filling equipment at the other end of the building. With a profusion of processes and applications thus benefiting from vacuum pumps it is not surprising that many different types and styles sizes and models and configurations and variations of vacuum producing machinery are available to the user. The familiar steam gas and fluid jet injectors eductors must be acknowledged as prime vacuum producers however we will only mention them in passing because they lack moving parts and thus do not fit our definition of machinery. Vacuum pumps are often classified in two broad categories dry type and liquid type. Dry types include lobe rotary piston sliding vane and even .
