Does the screw pump inlet need to be stepped down?
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I haven’t encountered screw pumps before; I wonder if their inlet is the same as that of centrifugal pumps? It needs to be entered step by step. Thank you everyone
Unlike centrifugal pumps, which require feed at the bottom and discharge at the top, screw pumps take in material at the upper end and discharge it from the adjacent opening
What I encountered was information provided by people close to the decision-makers; I’m not sure where to find information on screw pumps. I’m not very familiar with this topic – could anyone recommend some materials I can refer to? Thank you
What I’ve seen as well is a type that inserts from the side and discharges from the top; the schematic diagram can be found at http://www.info-pumps.com/zhishi1.asp?id=162. Due to its structure and operating characteristics, the screw pump has many advantages over piston pumps, centrifugal pumps, vane pumps, and gear pumps: it is capable of transporting media with high solid content. The flow is uniform and the pressure is stable, which is more evident at low speeds. The flow rate is proportional to the pump speed, thus offering good variable control capabilities. One pump for multiple uses can transport media of different viscosities. The pump can be installed at any inclination. Suitable for transporting sensitive items and those prone to damage from centrifugal force and similar forces. It has a small size, light weight, low noise, a simple structure, and is easy to maintain. Screw pumps can be widely used in the following industrial sectors to transport various media. Chemical industry: acids, bases, salt solutions, various viscous, pasty, and emulsive chemical slurries. Exploration and mining: various drilling slurries, water for mining, flocculating slurries, and suspensions. Shipbuilding industry: bilge water, oily waste, various fuels, and fresh water. Ceramics industry: clay, earth, glazes. Energy industry: various fuels, oil-coal slurry, water-coal slurry, coal slime, and nuclear waste. Wastewater treatment: wastewater, oily waste, sludge. Paper industry: various cellulose pulps, coatings, black liquor. Pharmaceutical, food, and cosmetics industries. Various grain and berry juices, starch pastes, pastes, mother liquors, mashed potatoes, wines, and distillers’ grains, etc. Other agriculture, forestry, animal husbandry, sideline occupations, and fisheries: they also have wide-ranging applications.
http://www.yroke.com/yroke_Article_122974.html This link is about the maintenance of screw pumps
http://bbs.hcbbs.com/thread-33105-1-1.html Haichuan’s screw pump maintenance procedure