Metering pump which good, metering pump quotation metering pump which good, including gear pump, screw pump, vane pump, flexible impeller pump, roots pump, rotary piston pump, etc. Among these pumps, gear pump and screw pump are the most common. Screw pump is a kind of rotor pump, compared with reciprocating pump, it has the following advantages: smooth rotation, no noise (only listen to the sound of motor), no oil leakage, no waste oil recovery device and water cooling and other auxiliary equipment.

Metering pump quotation, high efficiency of positive displacement pump, constant displacement when pressure changes (constant speed); 3) However, the screw pump is mainly used to transport high viscosity oil products. The efficiency of transporting thin oil is low, and the outlet pressure should not be too high. Otherwise, the internal leakage will increase, which will affect the safe use of the pump. At the same time, the screw pump has poor adaptability to flow changes, For the pipeline with large flow change, it is necessary to install auxiliary equipment such as frequency converter to adjust the flow of the pump.

Volume pump: it uses the periodic change of working volume to transport liquid, mainly including piston pump, plunger pump, diaphragm pump, gear pump, vane pump, screw pump, etc. Because this kind of pump also has the problem of negative pressure transmission, so the positive displacement pump needs to discharge the air in the pipeline first, and then pump water. When the pipeline is long and the pipe diameter is large, the pumping time will be too long, resulting in a waste of power.

Because of the problem of negative pressure transportation, it is easy to cause partial gas leakage in the pipeline, resulting in the formation of oil and gas mixed transportation, which leads to the decrease of equipment operation efficiency. The submersible pump is to immerse the pump body into the bottom of the oil tank, pressurize the oil directly through the impeller, and push the oil to the target oil reservoir, so as to realize the transportation of oil or spare oil tank to the vertical oil tank. Because of the positive pressure transportation, the large flow submersible pump has no air resistance and suction head problem.

And submersible pump motor internal liquid characteristics, make the motor life doubled. The liquid flows through the gap between the stator and rotor, which brings good lubrication effect to the bearing. The problems of motor and bearing are solved effectively. The submersible pump needs no maintenance and the failure rate is very low.