Hydraulic diaphragm metering pump rotary mechanism and the introduction of hydraulic system

Metering pumps are widely used in petrochemical, chemical, power, water treatment, pharmaceutical and other industrial processes for the quantitative delivery of various types of chemical additives. In 1936, the world's first motor-driven metering pump was invented; in 1939, Larry Wilson invented the Wilson chemical feeding equipment-the world's first hydraulic-driven diaphragm metering pump; in 1963, invented the world's first electromagnet Driven metering pump-LMI; 1965, invented the world's first pneumatic metering pump-WILLIAMS. 1. The transmission mechanism (1) is transmitted to the worm by the motor power, and the worm gear is decelerated and rotated to promote the reciprocating motion of the crankshaft and connecting rod mechanism to drive the plunger to generate hydraulic force. (2) Stroke adjustment mechanism consists of crankshaft, eccentric, adjusting nut, adjusting screw, adjusting hand wheel (handle), dial (pointer) and ruler, to change the eccentricity to achieve the relative stroke of the plunger. 2. Hydraulic System (1) hydraulic diaphragm metering pump hydraulic system, the structure of the plunger, cylinder block, cylinder head, import and export valves, hydraulic diaphragm and three valves (ie: deflation valve, limit valve , Compensation valve). Separated by the diaphragm in the work of hydraulic oil and media, so the hydraulic diaphragm metering pump without leakage advantages. (2) hydraulic diaphragm metering pump Hydraulic end of the plunger by the transmission side of the reciprocating movement of the crank drive work. Plunger reciprocating motion in the hydraulic chamber, prompting the hydraulic oil pressure changes, the hydraulic diaphragm flexure displacement to transport medium, the amount of hydraulic oil in the hydraulic chamber is relatively stable, the function of the three valves to maintain. (3) The overload valve automatically discharges the hydraulic fluid into the hydraulic chamber to ensure the smooth operation of the hydraulic oil. Overloading of the hydraulic fluid or overloading of the discharge pipe is prevented. The overloaded pressure automatically opens the load valve to achieve the protection purpose. (4) limit compensation device is to promote the use of hydraulic diaphragm limit valve open, according to the degree of vacuum within the hydraulic chamber at any time to replenish the oil to ensure that the hydraulic chamber filled with hydraulic oil.

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