What are the reasons and factors of wear of pump is

pump abrasion reasons, the pump is worn factors what are

pump abrasion reasons mainly include the size of the solid particles, hardness, shape, concentration of solid particles grading, conveying and speed as well as the material properties of the pump and so on. wear phenomenon not only make the pump impeller, mouth ring flow components such as running life shortens greatly, but also make the jobs of pump performance serious decline, show the water pump water yield greatly decreases, and the efficiency greatly reduce, etc. In the engineering design, material selection, therefore, should consider to take corresponding measures to control and reduce the abrasive action.

the water pump is worn factor 1) For particle density is greater than the water, regardless of their particle size, in the sport of imports to exports from the impeller have kitchen closer to the blade work trend, but its convergence speed and position; For small quality of fine particles, the convergence speed is slow, generally focused on leaf export medical domain and leaf, collide with particles increase quality ( Density or size increase) , and its convergence speed, the position of the collided with blade to blade import mobile; For the quality of coarse particle, mostly collided with blade imported parts.

large particles enter the port left face, not because the quality is big, but the result and the impact of the head of blade. Can be seen from the blade inlet, due to the inertia force, the relative motion of the coarse particles in the blade inlet Angle than fine particles smaller, easier to close to the head of blade, collided with the head. Part of particles and the collision, the head of blade fell to near the working face of blade runner, because the particles and the effect of blade impact force, particles left face, no longer collided with outlet blade working face. Part of the particles and the collision, the head of blade, stop for a while in this period of time, the particles with blade inlet edge around the pump shaft rotation, to obtain an additional centrifugal force, and then falling into a near blade on the back of the port. Fine particles due to the inertia small, won't concentration in inlet to the blade head movement, but the motion in the flow channel to blade face continuously, make the blade outlet particle concentration increases, leaf there serious wear and tear.

2) Wear and tear strength of impeller blade had 5 power relationship with the pump rotation speed, and higher speed will increase the blade pressure surface wear. In pressure filter in the design of pump selection should try to use smaller speed, in order to prolong the service life of the impeller.

3) Blade inlet Angle obvious effect to the wear and tear strength, outlet Angle influence on the wear and tear strength is not big, but the degree of partial abrasion. Outlet Angle after hours wear on blade outlet concentration, excessive and outlet Angle along the blade pressure side when serious wear and tear. Choose the blade parameters is not only beneficial to improve the hydraulic performance of the slurry water pump, and can improve the wear resistance.

4) Leaf blade Angle & phi; Particles, the greater the relative trajectory Angle & phi; K is, the greater the trajectory length. At the same time, the particle trajectory Angle is always greater than the Angle of the blade, the smaller blade Angle, particle Angle & phi; K and leaf Angle & phi; Is, the greater the difference between the particles, the more easy to collide with the working face, the more susceptible to wear and tear.

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