Petrochemical pump International petrochemical pump factory mainly Switzerland Sulzer company, Japan Ebara company, Germany KSB company, the United States Gaussian company. Petrochemical pump development is the direction of large-scale, high-speed, mechatronics, pump product package, standardization, serialization and generalization; variety, performance, long life and high reliability; pump seal, bearing the production of large Technology and specialization; in particular, high temperature, low temperature and cryogenic pumps, high-speed pumps, precision metering pumps, corrosion-resistant pumps, viscous media and transport medium with solid particles pump, and shield pump technology has developed rapidly. The forced circulation pump does not rely on the centrifugal force of the impeller to the liquid, but uses the thrust of the rotating impeller blades to make the sent liquid flow along the direction of the pump axis. When the pump shaft is driven by the motor to rotate, because the blade has a certain helix angle with the axis of the pump shaft, a thrust (or lift) is generated on the liquid, and the liquid is pushed out and discharged along the discharge pipe. When the liquid is pushed out, a partial vacuum is formed at the original position, and the liquid outside will be sucked into the impeller along the inlet pipe under the action of atmospheric pressure. As long as the impeller keeps rotating, the pump can continuously suck in and discharge liquid. The forced circulation pump works by using the horizontal thrust along the direction of the pump axis generated by the rotation of the impeller, so it is also called a horizontal axial flow pump. Mainly used in the evaporation of diaphragm method caustic soda, phosphoric acid, vacuum salt production, lactic acid, calcium lactate, alumina, titanium dioxide, calcium chloride, ammonium chloride, sodium chlorate, sugar, molten salt, paper, waste water and other industries. Concentration and cooling, in order to improve the production capacity of the equipment, increase the heat transfer coefficient of the heat exchanger for forced circulation. Therefore, it can also be called an axial flow evaporative circulation pump. Forced Circulation Pump,Circulation Pump,Recirculating Pump,Centrifugal Pumps Jiangsu Qiantu Trading Co., Ltd. , https://www.jsqiantupump.com
Compared with foreign countries, China's petrochemical pump in the design theory, design methods are relatively backward, product development and more use of imitation and analog methods, the lack of theoretical basis and experimental research data; processing equipment and technology is relatively backward, the processing accuracy is low, Low production efficiency; product serialization and generalization is not high, less variety of specifications; pump efficiency, quality and reliability, sealing performance, corrosion resistance and so there is a big gap. At present, China's petrochemical pump there are many dependent on imports.