High-accuracy moving-coil type electromagnetic direct-drive plunger pump

A plunger pump and moving coil technology, applied in the field of electromagnetic direct-drive plunger pumps, can solve the problems of complex movement, limited performance, and many transmission parts, and achieve improved energy transfer efficiency, high control precision, and huge economic benefits Effect

Pending Publication Date: 2020-07-24
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are many transmission parts and complex motion forms, which also limit the further improvement of its performance.

Method used

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  • High-accuracy moving-coil type electromagnetic direct-drive plunger pump
  • High-accuracy moving-coil type electromagnetic direct-drive plunger pump
  • High-accuracy moving-coil type electromagnetic direct-drive plunger pump

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Embodiment Construction

[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0027] Such as Figures 1 to 3 As shown, a high-precision moving coil electromagnetic direct-drive plunger pump includes a displacement sensor (1), a connecting plate (2), an outer yoke (3), an inner yoke (4), a coil (5), and a skeleton (6), permanent magnet array (7), end cover (8), return spring (9), hydraulic cylinder block (10), piston (11), valve body (12), liquid outlet valve (13) and liquid inlet The valve (14); the permanent magnet array (7) is a Halbach permanent magnet array layer composed of axially magnetized permanent magnets and radially magnetized permanent magnets arranged alternately close to each other, and the permanent magnet array (7) is surface-mounted inside The outer side of the yoke (4) or the inner side of the outer yoke (3); the inner yoke (4) and the outer yoke (3) are coaxially fixed through the end cover...

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Abstract

The invention relates to a high-accuracy moving-coil type electromagnetic direct-drive plunger pump. The plunger pump comprises a displacement sensor, a connecting plate, an end cover, an outer yoke,an inner yoke, a coil, a skeleton, a permanent magnet array, a hydraulic cylinder block, a piston, a reset spring, a valve block, a liquid outlet valve and a liquid inlet valve. The plunger pump is characterized in that a Halbach permanent magnet array layer which is formed by arranging axial magnetizing permanent magnets and radial magnetizing permanent magnets alternatively in a close attachmentmanner is arranged on the inner side of the outer yoke or the outer side of the inner yoke in a surface mount manner, an air gap is formed between the outer yoke and the inner yoke, and the yokes arefixedly connected with the end cover and the hydraulic cylinder block to serve as a plunger pump stator; a coil assembly is winded around the skeleton and is placed into the air gap, and the skeletonis integrated with the piston to serve as a plunger pump rotor; and the axial length of the coil assembly is smaller than the axial lengths of the corresponding axial magnetizing permanent magnets, acontroller has real-time control over the position of the plunger pump rotor through feedback signals of the displacement sensor, and because of the reset spring, when the plunger pump does not work,the plunger pump is at the position of a start point of liquid suction. According to the high-accuracy moving-coil type electromagnetic direct-drive plunger pump, the working efficiency and the control accuracy of the hydraulic pump are effectively improved.

Description

technical field [0001] The invention relates to the technical field of plunger pumps, in particular to an electromagnetic direct-drive plunger pump. Background technique [0002] The plunger pump has the advantages of high rated pressure, compact structure, high efficiency and convenient flow adjustment, and is widely used in high pressure, large flow and flow adjustment occasions. Among them, the swash plate type plunger pump has high efficiency, good pressure resistance performance, and can realize various variable functions, and is the mainstream plunger pump in the current market. However, there are many transmission parts and complex motion forms, which also limit the further improvement of its performance. [0003] With the development of linear direct drive technology, it is an important trend in the development of plunger pumps to use linear motors to directly drive the plunger pump pistons, thereby canceling the "swash plate" and other rotary-to-linear motion conve...

Claims

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Application Information

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IPC IPC(8): F04B17/04F04B53/10F04B53/14F04B49/22H02K33/18
CPCF04B17/04F04B49/22F04B53/10F04B53/14H02K33/18
Inventor 葛文庆李波谭草黎德祥孙宾宾陆佳瑜
Owner SHANDONG UNIV OF TECH
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