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Double action radial plunger pump

A radial column, double-acting technology, applied in the direction of pumps, multi-cylinder pumps, liquid displacement machinery, etc., can solve the problems of affecting pump performance, large flow pulsation, noise, etc., to achieve extended life, small flow pulsation, The effect of increasing stress

Inactive Publication Date: 2007-11-14
LANZHOU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of pump has two major disadvantages: ①The distribution shaft is affected by the radial unbalanced force, which is easy to wear and hold the shaft, which produces noise and affects the service life; ②The flow pulsation is relatively large, which also brings shock vibration and noise, which affects pump performance

Method used

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  • Double action radial plunger pump
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  • Double action radial plunger pump

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Experimental program
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Embodiment Construction

[0017] As shown in Figure 1, transmission shaft 1 and motor (not shown in the figure). Fig. 2 is a cross-sectional view of A-A in Fig. 1. The transmission part is composed of a transmission shaft 1, a cross connection turntable 9 and a cross key 16. 23 rotates around the distribution shaft 24. The outer surface curve of the pressing plate 20 is a circle, and the inner surface curve is an elliptic curve corresponding to the octagonal curve of the stator.

[0018] As shown in FIG. 2 , the stepped plunger 22 is installed in the plunger hole 31 opened on the rotor 23 . As shown in FIG. 4a, the stepped plunger 22 is a stepped plunger composed of at least two coaxial cylinders with unequal outer diameters. As shown in FIG. 2 , the shape of the plunger hole 31 corresponds to that of the stepped plunger 22 , and consists of at least two coaxial circular holes with unequal inner diameters. As shown in Figures 4a, 4b, and 4c, a groove 35 is provided along the radial direction at the ...

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Abstract

The double action radial plunger pump has plunger installed inside the plunger hole in the rotor, and features the stepped plunger comprising at least two coaxial sections of different outer diameters and the plunger hole in the corresponding shape. The stepped plunger has one radial notch in the end far from the flow distributing shaft, and inside the notch there is one annular holding cavity with the axis of the stepped plunger as axis. Inside the stepped plunger, there is one axial through hole, inside which one monoway valve comprising spring and piston is installed. The inner stator surface has projection curve in the flow distributing axis direction comprising smoothly connected octonal curves.

Description

technical field [0001] The invention relates to a radial plunger pump, which is especially suitable for occasions requiring high pressure, large flow and low noise. Background technique [0002] At present, in various hydraulic equipment such as construction machinery, forging machinery, mining machinery, leather machinery, metallurgical machinery, and machine tool industry, radial piston pumps are often used to deliver high-pressure and large-flow oil to meet work requirements. The structural characteristics of the previous radial piston pump are: ①The distribution shaft is fixed on the pump body, with a suction and oil discharge area and two or four triangular grooves; ②There are an odd number of plunger holes on the rotor; ③It is connected with the stator The contact adopts point contact or surface contact; ④The stator curve is designed as a circle, the rotor rotates once, and the plunger sucks and discharges oil once, single-acting; A ring composed of circles; ⑤The plun...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B1/12
Inventor 王伟健杨国来朱玉泉卢堃
Owner LANZHOU UNIVERSITY OF TECHNOLOGY