High-integration-degree moving coil type electromagnetic direct-driven metering pump

Abstract

The invention relates to a high-integration-degree moving coil type electromagnetic direct-driven metering pump, which comprises a displacement sensor, a connecting plate, an end cover, an outer magnet yoke, an inner magnet yoke, a coil, a skeleton, a permanent magnet array, a connecting disk, a cylinder body, a membrane, a membrane compression disk, a membrane compression plate, leaf spring valveseats and leaf springs. The high-integration-degree moving coil type electromagnetic direct-driven metering pump is characterized in that an air gap is formed between the outer magnet yoke and the inner magnet yoke; a Halbach permanent magnet array layer is adopted to enhance an air gap magnetic field; the magnet yokes, the end cover, the cylinder body, the membrane compression plate and the leafspring valve seats are fixedly connected to serve as a stator; a coil group is wound to the skeleton to be arranged in the air gap; the skeleton directly drives the membrane to carry out reciprocating motion through the connecting disk and the membrane compression disk to serve as an active cell; the membrane is still under a stretching state, so that when the metering pump does not work, the membrane is positioned on a liquid absorption starting point position, a controller feeds back a signal through the displacement sensor to control the position of the membrane of the metering pump in real time; and after the two same leaf spring valve seats are provided with the leaf springs, opposite assembling is carried out so as to form a liquid feeding / discharging check valve. According to thehigh-integration-degree moving coil type electromagnetic direct-driven metering pump disclosed by the invention, the integration degree and the metering accuracy of the metering pump can be effectively improved.

Description

technical field [0001] The invention relates to the technical field of metering pumps, in particular to an electromagnetic direct-drive metering pump. Background technique [0002] Metering pump, also known as quantitative pump, has the advantages of accurate measurement and adjustable dosing, and is widely used in petrochemical, pharmaceutical, food and other fields where the flow rate needs to be adjusted and the measurement accuracy is high. Among them, the diaphragm metering pump is easy to use, low in price, can achieve high flow output, and is widely used in industry. [0003] With the development of motor technology and the increasing demand for highly corrosive and highly volatile hazardous chemicals, a high-performance rotary motor is used to convert the rotary motion into a reciprocating linear motion through the crank linkage mechanism, and the slide bar is directly connected to the diaphragm. It is an important trend in the development of metering pumps to drive...

AI Technical Summary

Problems solved by technology

However, due to the existence of the motion conversion mechanism, the structure of the mechanical diaphragm metering pump is relatively complex, and the problems of metering accuracy and high energy consumption are more prominent.

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