CN209976749U - Meniscus-shaped bluff body valveless piezoelectric pump - Google Patents
Meniscus-shaped bluff body valveless piezoelectric pump Download PDFInfo
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- CN209976749U CN209976749U CN201920485911.6U CN201920485911U CN209976749U CN 209976749 U CN209976749 U CN 209976749U CN 201920485911 U CN201920485911 U CN 201920485911U CN 209976749 U CN209976749 U CN 209976749U
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Abstract
The utility model discloses a meniscus choke valveless piezoelectric pump, which comprises a pump cover, a sealing ring, a piezoelectric vibrator and a pump body; the pump body is internally provided with 3 crescent-shaped chokers, two gentle slope flow guide structures are arranged on the adjacent crescent-shaped chokers, the lower end of the pump cover is provided with a sealing ring, and the piezoelectric vibrator is fixed through the matching of the pump cover and the pump body to complete the assembly of the piezoelectric pump; the novel device has the advantages of high output flow rate, stable output performance and the like, and has wide application prospect in the fields of agricultural drip irrigation, biological medicine supply and the like.
Description
Technical Field
The utility model relates to a meniscus bluff body valveless piezoelectric pump belongs to the fluid machinery field.
Background
The valveless pump takes the piezoelectric vibrator as a driving source, and has the advantages of simple structure, no electromagnetic interference and the like; the valve-free pump has great application value in the fields of biological drug delivery, agricultural drip irrigation and the like, however, the difference of the interior of the valve-free pump can cause great influence on output flow, and the valve-free pump has the defect of low output flow at present, so that the valve-free pump is difficult to realize wide application in the fields of drug injection and the like.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to the problem that no valve piezoelectric pump exists at present, provide a no valve piezoelectric pump that output flow is high.
The utility model adopts the technical proposal that: a meniscus-shaped bluff body valveless piezoelectric pump comprises a pump cover, a sealing ring, a piezoelectric vibrator and a pump body;
the pump body is provided with an inlet and an outlet, 3 crescent-shaped chokers are linearly arrayed inside the pump body, two opposite gentle slope flow guide structures are arranged between every two adjacent crescent-shaped chokers, an annular sealing groove is formed inside the pump body, a sealing ring is placed inside the annular sealing groove, the bottom end of the pump cover is provided with a sealing groove, the sealing ring is installed inside the sealing groove, and a right-handed thread formed on the pump cover is matched with a thread groove formed on the pump body to fix a piezoelectric vibrator between the sealing rings;
as a further improvement of the technical scheme, the pump cover is provided with a cross beam.
The utility model has the advantages that:
the novel flow blocking device can utilize a meniscus flow blocking body, thereby improving the output flow;
this novel application simple structure and output flow height, very big reduction the processing cost.
Drawings
Fig. 1 shows the explosion of the present invention.
Fig. 2 is a cross-sectional view of the present invention.
Fig. 3 is a schematic structural view of the pump body according to the present invention.
Fig. 4 shows the structure of the pump cover of the present invention.
Detailed Description
In order to make the technical solution of the present invention better understood, the present invention is described in detail below with reference to the accompanying drawings, and the description of the present invention is only exemplary and explanatory, and should not be construed as limiting the scope of the present invention.
Referring to fig. 1 to 4, in an embodiment of the present invention, the specific structure includes:
a meniscus-shaped bluff body valveless piezoelectric pump is composed of a pump cover (1), a sealing ring (2), a piezoelectric vibrator (3) and a pump body (4); an inlet (4-1) and an outlet (4-2) are formed in the pump body (4), 3 falcate bluff bodies (4-4) in a linear array are arranged in the pump body (4), two opposite gentle slope flow guide structures (4-6) are arranged between the adjacent falcate bluff bodies (4-4), an annular sealing groove (4-3) is formed in the pump body (4), a sealing ring (2) is arranged in the annular sealing groove (4-3), the sealing groove (1-2) is arranged at the bottom end of the pump cover (1), a sealing ring (2) is arranged in the sealing groove (1-2), and the piezoelectric vibrator (3) between the sealing rings (2) is fixed by matching a right-handed thread (1-3) arranged on the pump cover (1) with a thread groove (4-5) arranged on the pump body (4);
as a further improvement of the technical scheme, the pump cover (1) is provided with a cross beam (1-1).
The utility model discloses a working process divide into first working process and second working process:
the first working process comprises the following steps: the piezoelectric vibrator (3) bends upwards under the excitation of a forward alternating current signal, the internal volume of the pump body (4) is increased, the pressure intensity is reduced, liquid is sucked into the pump body (4) from the inlet (4-1) and the outlet (4-2) at the same time, because the resistance of the convex surface of the meniscus-shaped bluff body (4-4) is smaller than that of the concave surface, the pressure loss of the liquid impacting the convex surface of the meniscus-shaped bluff body (4-4) is lower, and the liquid amount entering from the inlet (4-1) is more than that entering the pump body (4) from the outlet (4-2);
the second working process: the piezoelectric vibrator (3) bends and deforms downwards under the excitation of a reverse alternating current signal, the internal volume of the pump body (4) is reduced, the pressure is increased, liquid is discharged out of the pump body (4) from the inlet (4-1) and the outlet (4-2) at the same time, similarly, the pressure of the liquid impacting the convex surface of the meniscus-shaped choking body (4-4) is lower than the pressure of the concave surface of the meniscus-shaped choking body (4-4), the gentle slope flow guiding structure (4-6) has a flow guiding effect, more liquid is guided to the outlet (4-2) from the pump body (4), in two working processes, the amount of the liquid flowing out of the outlet (4-2) is higher than the amount of the liquid flowing out of the inlet (4-1), and the continuous output of the liquid is realized through the circulating work in the working process.
The principles and embodiments of the present invention have been explained herein using specific examples, and the above description is only applicable to help understand the methods and their core ideas of the present invention. The foregoing is only a preferred embodiment of the present invention, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes can be made without departing from the principle of the present invention, and the above technical features can be combined in a proper manner; the application of these modifications, variations or combinations, or the application of the concepts and solutions of the present invention in other contexts without modification, is not intended to be considered as a limitation of the present invention.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (2)
1. A meniscus-shaped bluff body valveless piezoelectric pump is composed of a pump cover (1), a sealing ring (2), a piezoelectric vibrator (3) and a pump body (4); import (4-1) and export (4-2) are seted up in the pump body (4), 3 crescent chokes of the inside linear array of the pump body (4) (4-4), two just right gentle slope water conservancy diversion structures (4-6) begin between adjacent crescent chokes (4-4), annular seal groove (4-3) are seted up to pump body (4) inside, lay sealing washer (2) in annular seal groove (4-3) inside, seal groove (1-2) are seted up to pump cover (1) bottom, at seal groove (1-2) internally mounted sealing washer (2), cooperate through thread groove (4-5) that right-handed screw (1-3) and pump body (4) seted up that pump cover (1) was seted up, fix piezoelectric vibrator (3) between sealing washer (2).
2. A meniscus bluff body valveless piezoelectric pump according to claim 1, wherein: the pump cover (1) is provided with a cross beam (1-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920485911.6U CN209976749U (en) | 2019-04-11 | 2019-04-11 | Meniscus-shaped bluff body valveless piezoelectric pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920485911.6U CN209976749U (en) | 2019-04-11 | 2019-04-11 | Meniscus-shaped bluff body valveless piezoelectric pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209976749U true CN209976749U (en) | 2020-01-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920485911.6U Expired - Fee Related CN209976749U (en) | 2019-04-11 | 2019-04-11 | Meniscus-shaped bluff body valveless piezoelectric pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209976749U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113137363A (en) * | 2021-04-26 | 2021-07-20 | 长春工业大学 | Valveless double-cavity resonance piezoelectric drive type insulin pump |
-
2019
- 2019-04-11 CN CN201920485911.6U patent/CN209976749U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113137363A (en) * | 2021-04-26 | 2021-07-20 | 长春工业大学 | Valveless double-cavity resonance piezoelectric drive type insulin pump |
| CN113137363B (en) * | 2021-04-26 | 2022-03-29 | 长春工业大学 | Valveless double-cavity resonance piezoelectric drive type insulin pump |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200121 Termination date: 20210411 |