A positive displacement pump that relies on a piston, a plunger, or a diaphragm to reciprocate in a cylinder to alternately increase and decrease the cylinder's internal working volume to deliver liquid or pressurize it. The reciprocating pump is divided into three types of piston pump, piston pump and diaphragm pump according to different reciprocating elements.
Application features: The main features of the reciprocating pump are: 1 High efficiency and wide area. 2 can reach very high pressure, pressure changes will not affect the flow, and thus can provide a constant flow. 3 It has self-priming ability and can transport liquid and gas mixture. It can also transport mud and concrete specially designed. 4 There is a large pulsation of flow and pressure, especially for single-acting pumps. The pulsation is greater due to the acceleration of piston movement and the discontinuity of liquid discharge. It is usually necessary to provide an air chamber on the discharge line (sometimes still on the suction line) to make the flow more uniform. The use of double-acting pumps and multi-cylinder pumps also significantly improves flow inhomogeneity. 5 The speed is low, the size is big, the structure is more complicated than the centrifugal pump, need special pump valve, the manufacturing cost and installation cost are higher. The piston pump is mainly used for water supply, and the manual piston pump is a family life water pump that is widely used. Piston pump is used to provide high pressure liquid source, such as high pressure water supply of hydraulic press, and it can be used as drilling mud pump and oil pump of oil field. Diaphragm pumps are particularly suitable for the delivery of highly toxic, radioactive, corrosive liquids, precious liquids and grinded solids containing liquids. Diaphragm pumps and piston pumps can also be used as metering pumps.
The central motor we are referring to here is a central Ebike Motor used on lithium-ion assisted Electric Bicycles, while the common one is the motor used on lithium-ion mountain assisted bicycles. It was developed and put into use after the hub motor, and compared to the hub motor, the technology of the central motor is not yet very mature, so there is still a long way to go in terms of performance stability. But the central motor has a characteristic that hub motors do not have, which is its instantaneous starting assistance function, so it also has a corresponding market. The most common method is to install a center mounted motor on a mountain Electric Bike to meet the bumpy road conditions in the mountains, so both hub motors and center mounted motors have their advantages and disadvantages. The choice of motor depends entirely on which aspect of its functionality you value.Generally speaking, the central motor is used to assist mountain bikes, and hub motors are more common on urban series of assist bicycles.
Electric Bicycle Motor ,Mid Motor,Ebike Motor
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