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Inner curved plane cam rolling bearing radial plunger pump

A flat cam and inner curve technology, which is applied in pumps, multi-cylinder pumps, machines/engines, etc., can solve the problems of large friction and wear, high decibel noise, and aggravated friction and wear between the plunger and the elliptical inner curved cam

Inactive Publication Date: 2016-08-24
BEIJING ZHONGHE TIANWAN PUMP IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the conventional inner curve cam radial piston pump works, the plunger and the inner curve cam produce sliding friction, and the friction and wear between the plunger and the elliptical inner curve cam is large.
At the same time, when the pump is running at high speed, this sliding friction produces high-decibel noise, and the friction and wear are aggravated, which limits the increase in the working speed of this type of plunger pump.

Method used

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  • Inner curved plane cam rolling bearing radial plunger pump
  • Inner curved plane cam rolling bearing radial plunger pump
  • Inner curved plane cam rolling bearing radial plunger pump

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0009] combine figure 1 , the curved track inside the cam of the stator [1] is elliptical, the cylinder liner [3] is evenly distributed on the rotor [2] according to its circumference, and each combined plunger (bearing rolling mechanism [5], plunger [6]) corresponds to A cylinder liner [3], the flow distribution shaft [4] is located on the axis line of the rotor [2].

[0010] The motor drives the rotor [2] to rotate, and the rotor [2] drives the combined plunger (bearing rolling mechanism [5], plunger [6]) in the cylinder liner [3] to rotate. When the rotational speed reaches a certain value, under the joint action of inertial force, hydraulic pressure and stator reaction force, the outer bearing of the bearing rolling mechanism [5] of the combined plunger (bearing rolling mechanism [5], plunger [6]) The circle moves in an elliptical circle along the inner curved track of the stator [1] cam, and the plunger [6] moves back and forth in the cylinder liner. When the bearing r...

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Abstract

The invention discloses an inner curved plane cam rolling bearing radial plunger pump. The plunger pump comprises a stator, a rotor, cylinder sleeves, a distribution shaft and bearing rolling mechanism combined plungers (comprising bearing rolling mechanisms and plunger bodies). The plunger pump is characterized in that each combined plunger is a combination body of one bearing rolling mechanism and one plunger body. Pure rolling between the plunger bodies and the stator is achieved, the abrasion problem caused by insufficient rolling of plunger heads is solved, noise generated during high-speed operation of the plunger pump can be lowered, and the service life of the plunger pump can be prolonged. The plunger pump is suitable for oil medium pumps and water medium pumps.

Description

technical field [0001] The invention belongs to the field of plunger pumps, and relates to a radial plunger pump with inner curve plane cam rolling bearings. Background technique [0002] Radial plunger pump is an important type of plunger pump. The piston or plunger is perpendicular to the rotor axis and arranged radially in the radial direction. It relies on the change of the working volume in the sealed cavity of the plunger cylinder to realize the pressure of the liquid medium. Radial piston pumps have the advantages of high rated working pressure, compact structure, high efficiency and convenient flow adjustment, and are widely used in high pressure and large flow occasions. At present, there are two main types of inner curve plane cam radial piston pumps on the market. One is a single-acting pump. The inner surface of the stator is a circle, and the center of the circle has an eccentric distance from the axis of the rotor. For every revolution of the rotor, the plun...

Claims

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Application Information

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IPC IPC(8): F04B1/047
Inventor 邓意超胡仲翔赵军军张甲英时小军
Owner BEIJING ZHONGHE TIANWAN PUMP IND
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