A magnetic fluid pump

Abstract

The present invention provides a magnetic fluid pump, comprising at least two unit pumps in series, the outlet of any unit pump is connected to the inlet of the adjacent unit pump; the unit pump includes a pump casing, Partition and magnetic fluid; the partition is fixed inside the pump casing, the pump casing is provided with magnetic fluid, and the outer wall of the pump casing is provided with several electromagnetic coils that can be independently controlled. On and off, making the magnetic fluid reciprocate and circulate around the partition. The magnetic fluid is respectively arranged in the return chamber and the liquid inlet chamber, and the magnetic fluid circulates in the return chamber and the liquid inlet chamber by selectively controlling the on-off of several electromagnetic coils. The invention overcomes many disadvantages of the traditional positive displacement pump and at the same time enhances and improves the transmission characteristics of the positive displacement pump. Compared with the traditional positive displacement pump, the complex structure and many parts are omitted, and the useless work due to mechanical transmission and friction is reduced.

Description

technical field [0001] The invention relates to the field of variable volume pumps, in particular to a magnetic fluid pump. Background technique [0002] A pump is a fluid machine that transports liquid or pressurizes the liquid. It transmits the mechanical energy of the prime mover or other external energy to the liquid to increase the energy of the liquid. The positive displacement pump relies on the periodic change of the volume of the sealed working space containing the liquid, so that the liquid is forced to be discharged after the pressure is increased. Therefore, the positive displacement pump not only has good self-priming characteristics but also has a very stable flow rate when the load changes. Positive displacement pumps are currently divided into reciprocating pumps and rotor pumps. Among them, reciprocating pumps have the characteristics of high pressure and small flow, and are suitable for transporting clean liquids or gas-liquid mixtures. Reciprocating pumps ...

AI Technical Summary

Problems solved by technology

Although the disc-shaped piston reciprocating pump has the advantages of short pump cylinder length and large flow rate, it has the disadvantages that the pump cylinder is divided into two spaces, and the pressure difference is easy to leak. The disadvantage of high cost; although the diaphragm reciprocating pump has wear resistance and corrosion resistance, the transmission efficiency is low

At the same time, the existing volumetric pump adopts a traditional mechanical structure, and its transmission and connection use multiple parts, which makes the structure of the pump body complex and difficult to disassemble and assemble, making maintenance difficult

Due to the use of multiple parts in the traditionally designed positive displacement pump, there will be a large amount of frictional heat loss during the rotational movement, which will reduce the efficiency of the pump and accelerate the aging of the pump, thus affecting the service life.

In addition, traditional volumetric pumps use one-way valves at both the liquid inlet and the liquid outlet, which not only increases the number of parts of the pump, but also makes the structure of the pump more complicated.

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