An Interlocking Solenoid Valveless Piezoelectric Pump

Abstract

The invention discloses a lituus tube valveless piezoelectric pump which comprises a pump body and a pump cover. The pump body is provided with an inlet buffer cavity, an outlet buffer cavity, an inlet flow tube, an outlet flow tube and a lower half part of a pump cavity. The inlet flow tube and the outlet flow tube are respectively composed of a lituus flow tube and several branch flow tubes, wherein the lituus flow tube is communicated with the branch flow tubes, and the branch flow tubes are arranged symmetrically relative to a center line of the lituus flow tube; the second branch flow tube and the third branch flow tube are straight flow tubes identical in geometric structure dimension and are symmetric with each other relative to the center line of the lituus flow tube, and the central axis of the second branch flow tube and the central axis of the third branch flow tube are parallel to the central axis of the lituus flow tube; the first branch flow tube and the fourth branch flow tube are semicircular tubes identical in geometric structure dimension and are symmetric with each other relative to the center line of the lituus flow tube; the lituus flow tube has the good property of curvature radius linear transition, fluid flowing in the lituus flow tube is subjected to uniform transverse acting force, as a result, the flowing is stable, vibration is little, energy consumption is low, and efficiency is high.

Description

technical field [0001] The invention relates to the field of microfluidic transmission and control and micromechanical technology, in particular to a novel chain solenoid valveless piezoelectric pump. Background technique [0002] Piezoelectric pump is a kind of mechanical micropump, which belongs to positive displacement pump. It is widely used in the fields of micro-transportation of drugs, cell separation, cooling of electronic products, micro-injection of fuel, chemical micro-analysis, and transition control of pipeline flow. At present, piezoelectric pumps are mainly divided into two types: valved piezoelectric pumps and valveless piezoelectric pumps. Valveless piezoelectric pumps have no movable valves, and have a simple structure, which is more suitable for miniaturization and miniaturization, and can meet the needs of high-frequency applications. Work requirements, overcome the shortcomings of valved piezoelectric pumps that cause noise when the flow is interrupted, ...

AI Technical Summary

Problems solved by technology

The flow tube of this kind of structure uses the overall interlocking spiral structure of the flow tube, the flow channel is too long, and the loss of the fluid along the positive and negative directions is large when the fluid flows in the curved flow tube. At the same time, due to the centrifugal force, two The secondary flow increases the local resistance and causes secondary flow loss, and the DC tube used has no flow resistance characteristics, so the efficiency of the micropump is low, and the structure is relatively complicated, which is not conducive to integration and miniaturization

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