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Low-noise hydraulic planger pump with energy accumulator

A technology of hydraulic plunger pumps and accumulators, which is applied to pumps, multi-cylinder pumps, machines/engines, etc., and can solve problems such as poor adaptability and poor adaptability

Inactive Publication Date: 2004-02-11
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

2. It has a good effect on pumps with constant working conditions such as constant pressure and fixed quantity, but poor adaptability to variable pressure and variable pumps
2. When the working condition deviates too much from the rated working condition, the adaptability is not good

Method used

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  • Low-noise hydraulic planger pump with energy accumulator
  • Low-noise hydraulic planger pump with energy accumulator
  • Low-noise hydraulic planger pump with energy accumulator

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0012] like figure 1 Shown is a schematic diagram of the structure of a low-noise hydraulic plunger pump with an accumulator. The plunger 4 is installed in the axial hole of the cylinder body 1, one end of the cylinder body 1 is pressed on the distribution plate 11, the pressure plate 6 is connected with the plunger 4 through the sliding shoe 5, the main shaft 10 is installed in the cylinder body 1, The spring 9 is installed in the inner sleeve 8, and is pressed on the pressure plate 6 through the steel ball 7; the accumulator 3 is installed in the small central through hole of the plunger 4, and the inner end surface of the large central hole of the plunger near the end of the valve plate is equipped with A flange 2 with several small through holes along the axial direction.

[0013] like figure 2 A schematic diagram of the structure of the accumulator is shown. The accumulator 3 is made of non-metallic material, and the non-metallic material 12 contains a little high-pre...

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Abstract

A low-noise hydraulic plunger pump with energy accumulator installed in the central through hole of plugner is composed of cylinder, flange, energy accumulator, plunger, slide block, pressing disk, steel ball, inner sleeve, spring, mainshaft and flow distributor. Its advantages include accumulating and releasing energy to reduce pressure ripple, and low noise.

Description

technical field [0001] The invention relates to a low-noise hydraulic plunger pump with an accumulator. technical background [0002] The fluid noise of the plunger pump is mainly generated by the flow distribution process. During the flow distribution process, when the plunger cavity transitions from the oil suction area to the oil discharge area, the plunger cavity filled with low-pressure oil suddenly connects with the high-pressure oil in the oil discharge area, causing high-pressure oil to enter the plunger cavity from the oil discharge area, forming Flow backflow impact. With the increase of the pressure of the plunger and the backflow flow, the pressure in the plunger chamber rises to be equal to the pressure of the oil discharge area. As the plunger continues to be pressed in, the plunger chamber enters the oil discharge working condition. However, due to the inertia and damping effect of the oil, the discharge of the oil is restricted, an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B1/12
Inventor 傅新杨俭杨华勇
Owner ZHEJIANG UNIV