Motor direct-drive type ball screw transmission reciprocating pump

Abstract

The invention discloses a motor direct-drive type ball screw transmission reciprocating pump. The motor direct-drive type ball screw transmission reciprocating pump comprises a motor control cabinet,a left piston cylinder, a right piston cylinder, a left piston, a right piston, a motor, a ball nut, a ball screw shaft, suction valves and discharge valves. The left piston and the right piston are arranged in the two piston cylinders and are symmetric. The motor is arranged between the two piston cylinders. The ball nut is arranged at the center of a motor rotor. The ball screw shaft is arrangedat the center of the ball nut and is in threaded fit with the ball nut. The suction valves and the discharge valves are arranged on the peripheries of the respective outer ends of the two piston cylinders. Each of the suction valves and the discharge valves is composed of a valve seat and a valve element. Each valve element is of a solid structure and comprises a valve rod and a valve bonnet provided with a notch, wherein the valve bonnet is matched with a column core cavity in the upper portion of the valve seat, and two circular holes are formed in the top of the valve seat. The motor direct-drive type ball screw transmission reciprocating pump can achieve the long-stroke and low-stroke-time reciprocated motion, and the production actual requirement is met; transmission is stable, the bearing force is large, efficiency is high, and noise is low; and automatic control is achieved through motor reversing drive, and the work efficiency is improved.

Description

technical field [0001] The invention relates to a pump, in particular to a motor direct-driven ball screw drive reciprocating pump. Background technique [0002] Reciprocating pumps and reciprocating compressors are widely used in industry and are the most important general-purpose equipment in all walks of life in the industry. They are often used to transport fluids of various capacities, pressures, and performances. However, the traditional reciprocating drive technology is that the power machine (engine or motor) changes the rotational motion of the power machine into linear reciprocating motion through connecting rods, cams or crankshafts. The working principle is: the power machine drives the connecting rod or When the cam or crankshaft rotates at a certain angular velocity, the connecting rod or cam or crank drives the piston or plunger to reciprocate in the hydraulic cylinder through the intermediate rod and piston rod. One-time fluid suction and discharge process. ...

AI Technical Summary

Problems solved by technology

Its transmission modes mainly include connecting rod transmission, cam transmission, crankshaft transmission, rocker transmission, wire rope transmission and diaphragm transmission, etc. These transmission modes determine the high stroke frequency, short stroke and displacement adjustment of the reciprocating pump and reciprocating compressor in the traditional system. Difficult, large fluctuations in displacement and discharge pressure, short life of wearing parts, poor suction, difficult to meet the requirements of modern industrial technology levels, and become an urgent problem to be solved in the design, manufacture and application of reciprocating pumps and reciprocating compressors

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