Built in rotable multiblock valve less piezoelectric pump
A valveless piezoelectric pump, piezoelectric pump technology, applied in the direction of pumps, pumps with flexible working elements, liquid variable capacity machinery, etc., can solve the problems affecting the application of piezoelectric pumps, the processing difficulties of two tapered flow tubes, Small problems, to achieve the effect of broad practical application prospects
Inactive Publication Date: 2007-04-18
BEIJING UNIV OF TECH
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Problems solved by technology
However, the exposed two tapered tubes of this pump increase the overall size of the pump, which is not conducive to the further miniaturization and integration of the pump; at the same time, the processing of the two tapered flow tubes is difficult and the installation and positioning are not good. The flow rate of the tubeless valveless piezoelectric pump is also small, and these defects have seriously affected the application of the piezoelectric pump in the practical field.
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[0025] For the specific implementation manner of the present invention, refer to FIGS. 3-13 .
[0026] The device includes a piezoelectric pump upper cover 8 and a piezoelectric pump lower cover 6, and the two cooperate to form a pump chamber. Tetrahedral blocks 7 are arranged in a staggered arrangement in the pump chamber, as shown in Figures 3 and 4, the number of tetrahedral blocks 7 is 13. The structure of a single tetrahedral inlay 7 is shown in Figures 11 to 13. It is a tetrahedral copper inlay with a protruding small cylindrical plug on the bottom surface. This series of inlays are placed under the pump chamber through the cylindrical plug. In a series of small cylindrical grooves 15 shown in FIG. 7 opened on the bottom surface, the fit is clearance fit. Also includes a direct current tube 10, the direct current tube 10 is a rectangular pipe groove opened above the piezoelectric pump lower cover 6, and it is integrated with the piezoelectric pump lower cover 6. The pu...
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In the invention, by setting a tetrahedral inserted block in the pump chamber, the fluid flowing in or out from the inlets and outlets of two pumps suffers different resistances, so as to form pressure difference to achieve the goal of the one-way flow. The invention mainly includes a piezoelectric pump top cap, a piezoelectric pump bottom cap, a piezoelectric vibrator disposed on the piezoelectric pump top cap, inlets and outlets of two pumps, a tetrahedral inserted block and a direct-flow pipe disposed on the piezoelectric pump bottom cap. The pump inlets and outlets are in communication with the pump chamber through the direct-flow pipe. The tetrahedral block is used for regulating the flow of pumps.
Description
technical field [0001] The invention relates to a valveless piezoelectric pump with built-in rotatable multi-embedded blocks, which belongs to the field of fluid machinery. Background technique [0002] Piezoelectric pumps are mostly volumetric pumps. According to the presence or absence of pump valves, piezoelectric pumps can be divided into valved piezoelectric pumps and valveless piezoelectric pumps. Figure 1 shows a valved piezoelectric pump. Because the valveless piezoelectric pump omits the complex action valve body, the structure of the piezoelectric pump is simpler, the processing is easy, and it is easy to develop in the direction of miniaturization of the piezoelectric pump; the valveless piezoelectric pump itself has no chemical and electromagnetic Pollution, so it has broad application prospects in the fields of medical treatment, sanitation, and health care. At present, most of the valveless piezoelectric pumps are made of conical flow tube valveless piezoelect...
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IPC IPC(8): F04B43/04
Inventor 张建辉李洪赵淳生
Owner BEIJING UNIV OF TECH