Air core pump with impeller center boost adjustment

A technology of regulating device and air-core pump, which is applied to parts of pumping device for elastic fluid, pump of special fluid, pump and other directions, can solve problems such as limiting pump performance, and achieve light weight, simple structure, and working volume. small effect

Active Publication Date: 2015-12-09
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods propose ways to suppress cavitation in terms of structure and working conditions, but they exist in the flow channel regardless of whether cavitation occurs, which limits the performance of the pump to a certain extent while suppressing the generation of air bubbles.

Method used

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  • Air core pump with impeller center boost adjustment
  • Air core pump with impeller center boost adjustment
  • Air core pump with impeller center boost adjustment

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Embodiment Construction

[0030] The present invention will be further described below in conjunction with accompanying drawing and embodiment (all take fuel oil as example).

[0031] Please refer to figure 1 As shown, the air core pump with the impeller center supplementary pressure adjustment device of the present invention includes a transmission assembly 1 , an impeller assembly 2 , an inlet adjustment assembly 3 and an impeller center supplementary pressure adjustment device 4 .

[0032] Please refer to figure 1 and combine Figure 2 to Figure 5As shown, the transmission assembly 1 of the present invention includes a bushing 1.1, a screw 1.2, a sealing gasket 1.3, a bearing cover 1.4, a transmission shaft 1.5, an input shaft 1.6, a spring 1.7, a deep groove ball bearing 1.8, a lubricating oil sleeve 1.9, a gear Plate 1.10, adjustment block 1.11, radial bearing 1.12, bushing 1.13, bearing mount 1.14. The sealing gasket 1.3 is used to adjust the gap between the right bearing end cover 1.4 and the...

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Abstract

The invention provides a vapor-core pump with an impeller central pressure supplement regulator. The impeller central pressure supplement regulator enables the vapor-core pump to operate under higher performance and efficiency. By the aid of the impeller central pressure supplement regulator for controlling front and back pressures at a valve port of an inlet throttle valve, cavitation caused by excessively low central impeller pressure can be avoided or inhibited effectively, and the damage caused by cavitation can also be avoided.

Description

Technical field: [0001] The invention relates to a fuel pump with a large flow regulation ratio, especially to an air core pump with an impeller center supplementary pressure adjustment device for improving the working performance and efficiency of the air core pump. Background technique: [0002] Air-core oil pump (air-core pump) is a new type of oil pump developed on the basis of centrifugal pumps in recent years. It can be used for pumping oil with large flow, low viscosity, and strong corrosive media. Compared with positive displacement pumps, this type of dynamic pump has many advantages, such as being able to pump liquids with poor lubricating properties or corrosive liquids, and supplying large flow liquids at lower pressure heads. [0003] The main structural feature of the air core pump is the frictionless working surface in the working part of the pump body. But in general, the efficiency of ordinary centrifugal pumps is much lower than that of plunger pumps when ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D7/00F04D29/66
Inventor 王彬于定鹏叶志锋
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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