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Reciprocating double-plunger pump oil supply device

A technology of double plunger pump and oil supply device, which is applied in the direction of piston pump, pump, pump control, etc. It can solve problems such as difficulty in starting, small torque of low-power linear motor, high price of high-power linear motor, etc., and achieve dynamic Good performance, stable work and simple structure

Inactive Publication Date: 2011-06-01
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, low-power linear motors have small torque and are difficult to start, and high-power linear motors are expensive

Method used

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  • Reciprocating double-plunger pump oil supply device
  • Reciprocating double-plunger pump oil supply device
  • Reciprocating double-plunger pump oil supply device

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Embodiment 1

[0020] Example 1: See first figure 1 — figure 2 shown. figure 1 It is a structural front view of the reciprocating double plunger pump oil supply device of the present invention, figure 2 It is a left view of the structure of the reciprocating double plunger pump oil supply device of the present invention. The reciprocating double plunger pump oil supply device proposed by the present invention includes a rotating motor, a rack and pinion, two plunger pumps, a coupling, two oil suction check valves, two oil discharge check valves and a drive control system . in:

[0021] The output shaft of the rotary motor 1 performs rotary motion, the linear motor 1 transmits the rotary motion to the gear shaft 3 through the coupling 2, and the gear shaft 3 transmits the motion to the gear 4 through the key 5; the gear 4 is installed on the gear shaft , the left end is positioned by the shaft shoulder, and the right end is positioned by the bearing end cover 6; the bearing end cover 6...

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PUM

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Abstract

The invention relates to a reciprocating double-plunger pump oil supply device, comprising a rotary motor, a gear, a rack, two plunger pups, a shaft coupling, two oil absorbing one-way valves, two oil draining one-way valves and a control drive system, wherein the rotary motor is coupled with a gear shaft via the shaft coupling, the gear shaft is coupled with the gear via a key; a bearing end cover is rigidly connected with the gear shaft; the gear is in engaged transmission with the rack to transform the rotary motion of the gear to the linear reciprocating motion of the rack, two ends of the rack are provided with threaded holes respectively in a turning way; externally extending shafts of pistons of the two plunger pumps are coupled with the threaded holes at two ends of the rack, rear ends of cylinders of the two plunger pumps are both equipped with the oil absorbing one-way valves and the oil draining one-way valves, and the drive control system consists of a computer, an I / O (Input / Output) control circuit, a cylinder driver, a signal processing and control circuit and a hydraulic flow meter. According to the invention, the rotary motion of the gear is outputted and transformed to the linear reciprocating motion of the plunger via a gear and rack transmission mechanism, thereby realizing the control of the plunger pumps for the oil feeding / draining of a hydraulic loop, and the device is simple in structure, good in dynamic property, stable in operation and outstanding in economical efficiency.

Description

technical field [0001] The invention relates to a plunger pump oil supply device, in particular to a reciprocating double plunger pump oil supply device. Background technique [0002] In the field of hydraulic pressure, plunger pumps are widely used in oil supply systems, especially reciprocating oil supply systems, due to their simple structure, reliable sealing, and high working pressure. As an independent hydraulic power component, the plunger pump generally needs to be connected with a rotating motor to form a motor-hydraulic pump unit to output hydraulic energy. [0003] Plunger pumps often require the power output of a linear motor or a rotary motor to drive the linear reciprocating motion of the piston. Prior technology (Ji Hong and other patents, application number: 200510096198.9, application date: October 11, 2005 "Linear Motor Plunger Pump 》), the plunger connected with it is directly driven by the linear motor, so that the electric energy is directly converted i...

Claims

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Application Information

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IPC IPC(8): F04B9/02F04B49/06
Inventor 卞永明李安虎李志忠姜旭春
Owner TONGJI UNIV
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