Reciprocating pump structure and working principle
First, the structure of reciprocating pump and working principle Main components: pump cylinder, piston, piston rod and suction valve, discharge valve. Working principle: When the piston moves from left to right, a negative pressure is formed in the pump cylinder, then the liquid in the sump enters the pump cylinder through the suction valve. When the piston moves from right to left, the liquid in the cylinder is squeezed, the pressure increases, and it is discharged by the discharge valve. Pistons reciprocate, each suction and discharge a liquid, called a work cycle; this pump is called a single action pump. If the piston from time to time, each inhalation and discharge of liquid twice, known as double-acting pump. Pistons move from one end to the other end, called a stroke. Second, the reciprocating pump flow and pressure head Reciprocating pump flow and head pressure has nothing to do with the size of the pump cylinder, piston stroke and reciprocation frequency. The theoretical flow of a single-acting pump is QT = Asn The actual flow of the reciprocating pump is smaller than the theoretical one and decreases with the increase of the pressure head because of the leakage. Reciprocating pump head and pump flow and pump geometry has nothing to do, but by the pump mechanical strength, the power of the prime mover and other factors. Third, the installation of reciprocating pump height and flow control The reciprocating pump does not need to be filled with liquid when it starts up. Because the reciprocating pump has the self-priming capability, the suction vacuum height also varies with the atmospheric pressure in the area where the pump is installed, the nature of the liquid and the temperature, so the reciprocating pump installation height is also limited . Reciprocating pump flow can not be discharged with the valve on the pipeline to adjust, but should be used by the bypass pipe or change the reciprocation of the piston to change the piston stroke to achieve. Before starting the reciprocating pump, the valve in the discharge line must be opened. The reciprocating pump's piston is connected to the prime mover by the connecting rod crankshaft. The prime mover motor, steam engine can also be used. Reciprocating pumps for high-pressure head, small flow, high-viscosity liquid delivery, but not for transporting corrosive liquids. Sometimes directly driven by the steam engine, delivering flammable, explosive liquids. Blind Flange,Bs Flange,Oil Pipe Parts,Carbon Blind Flange Zhangqiu Xinhao Machinery Parts Factory , https://www.xhflange.com