High pressure water pump working principle diagram and working principle of high pressure water pump

High pressure pump is a kind of general machinery, conveying fluid and fluid pressure machine. Commonly used high-pressure water pump according to the principle of function, pump can be divided into three categories:

(1) positive displacement pump: used to transport volume periodic change and improve the fluid pressure, such as piston pump, plunger pump, diaphragm pump, gear pump, etc. ;

(2) the vane pump: rely on the pump in the high-speed rotating impeller to transmit energy to the liquid, increase pressure and conveying fluid, such as centrifugal pump, the mixed flow pump, axial flow pump;

3. Other types of pump: using hydrostatic pressure or flow of liquid kinetic energy to pump fluid power pump, such as the jet pump, water hammer pump, etc.

points can be divided into: high pressure water pump according to the medium and high pressure plunger pump, high pressure reciprocating pump, high pressure centrifugal pump, etc. , below small make up the main sorting the pump working principle and characteristics of dynamic, in order to everyone in the selection and use of the pump has the certain help.

high pressure reciprocating water pump working principle

reciprocating pump piston moves to the right, while working within the cavity pressure is reduced, the valve on the pressure, the valve cap, liquid inhalation; Increased piston moves left, cavity pressure, the valve on the top, valve under pressure, the liquid discharge.

advantages of reciprocating pump:

can make a lot of pressure, and has nothing to do with pressure, flux of aspiration can be good, efficiency is higher, the steam reciprocating pump can reach 80% ~ 95%;

the transmission of any media can in principle, almost not restricted by physical or chemical nature of the medium;

the performance of the pump does not change along with the pressure and the change of medium viscosity.

reciprocating pump drawback: the traffic is not very stable. With traffic than large centrifugal pump; Organization complex; Money amount; Not easy maintenance etc.

high pressure centrifugal water pump working principle

centrifugal pump, liquid filled with pump shell, high-speed rotating impeller, liquid under the action of centrifugal force, high speed, high speed liquid after widening pump shell channel, dynamic head into static head.

high pressure centrifugal pump performance characteristics:

high efficiency and energy saving: pump has a highly efficient hydraulic line, high work efficiency.

installation, easy maintenance: vertical pipeline structure, the import and export of the pump can be like the valve installed in the line of any location and any direction, convenient in installation and maintenance.

smooth operation, safe and reliable: the motor shaft and the pump shaft for coaxial straight league, high concentricity, smooth operation, safe and reliable.

stainless steel shaft sleeve: shaft machine sealing position is relatively easy to be corroded, straight association-like pump shaft once corrosion, easy to cause mechanical seal failure. Set with stainless steel shaft sleeve, avoid corrosion, improve the working life of the shaft, reduces the operation maintenance cost.

bearing: pump with motor by the middle and lower shaft extension end bearing adopts sealed bearing, normal use, free of motor bearing maintenance.

machine seal: mechanical seal is generally selected base a rubber bellows structure, the traditional mechanical seal on the axial seal by the line of o-ring seal instead of two face seal rubber parts, improve the sealing effect in water medium.

high pressure plunger pump working principle

plunger pump plunger reciprocating motion L is the total stroke of constant, determined by the lift of the CAM. Plunger fuel delivery per cycle depends on delivery stroke and delivery stroke is not controlled by the camshaft is variable. Oil began to moment changes over oil supply schedule. Rotate the plunger can change oil supply at the end of time, so as to change the oil. Plunger pump is working, the fuel injection water pump camshaft on the CAM and the plunger spring, under the action of force on the plunger, under reciprocating motion, thus complete oil pump, oil pump process can be divided into the following two phases.

feed process after the turn CAM convex part of the past, under the action of spring force, plunger downward movement, column inserting space ( Known as the oil pump room) Produce vacuum, when the column inserting end face on the oil hole on the plunger sleeve, filled with oil in the oil pump diesel by the oil hole in the tao into the pump oil chamber, piston movement to the next check point, inlet end

plunger oil return process up oil, when the upward to the column inserting chute ( Stop for side) With oil return hole on the sleeve, the low pressure oil pump oil chamber with plunger head in the hole and the radial hole and chute communication, hydraulic plummeted, delivery valve under the action of spring force quickly closed, stop the oil supply. Since plunger upward, even after the turn CAM convex part of the past, in the spring, under the action of plunger downward again. At that moment, begin the next cycle.

high pressure plunger pump with a plunger principle is introduced, a plunger pump has two one-way valve, and in the opposite direction, the plunger to appear negative pressure in cylinder when one direction, then a check valve to open the liquid be inhaled in cylinder, plunger to another direction, to squeeze the liquid after another one-way valve is opened, drawn into the cylinder's liquid is expelled. A continuous movement of this way of working is formed after the continuous oil supply.

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