CN207750207U - Multiple hook-type bluff body Valveless piezoelectric pump - Google Patents
Multiple hook-type bluff body Valveless piezoelectric pump Download PDFInfo
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- CN207750207U CN207750207U CN201721453654.5U CN201721453654U CN207750207U CN 207750207 U CN207750207 U CN 207750207U CN 201721453654 U CN201721453654 U CN 201721453654U CN 207750207 U CN207750207 U CN 207750207U
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- pump
- pump housing
- bluff body
- groove
- hook
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Abstract
The utility model discloses a kind of multiple hook-type bluff body Valveless piezoelectric pumps, include the hook-type bluff body of piezoelectric vibrator, the pump housing and anti-backflow, and thick pipe inlet and thin pipe liquid outlet is respectively set in the front-end and back-end of the pump housing.In the present invention, electric signal is applied for piezoelectric vibrator, piezoelectric vibrator generates dilatation, and when piezoelectric vibrator is to upper cover Direction distortion, liquid enters from inlet, and when piezoelectric vibrator is to pump housing Direction distortion, liquid is discharged from liquid outlet；When liquid sucks the pump housing, liquid outlet will produce backflow phenomenon, and multiple hook-type bluff body is provided in the utility model, to reduce reflux effect, improve the flow of this Valveless piezoelectric pump.
Description
Technical field
The utility model is related to a kind of multiple hook-type bluff body Valveless piezoelectric pumps, belong to field of fluid machinery.
Background technology
Now in piezoelectric pump industry, most of pumps are all the piezoelectric pumps for having valve, have the pump volume of valve larger, are unfavorable for
The smaller applications in space, and Valveless piezoelectric pump reflux, than more serious, most of Valveless piezoelectric pumps are all to pass through bluff body
Come in fact, it is not fine that bluff body, which has hemispherical also to have taper, resistance flowing effect, is had no to choked flow in existing Valveless piezoelectric pump
Body angle is controlled, and the effect of the bluff body of Valveless piezoelectric pump need to be improved, and the pump discharge of Valveless piezoelectric pump also needs
It improves.
Utility model content
The utility model for current piezoelectric pump there are the problem of, propose it is a kind of it is small, pump output is big, effectively reduces back
The Valveless piezoelectric pump of stream effect.
The multiple hook-type bluff body Valveless piezoelectric pump of the utility model, including fastening nut (1), the pump housing (2), bluff body (3),
Sealing ring (4), middle pump body (5), piezoelectric vibrator (6), sealing rubber ring (7), upper cover (8) and trip bolt (9)；The pump
Body (2) is equipped with inlet (2-4) and liquid outlet (2-1), and the cross-sectional area of the inlet (2-4) in the pump housing (2) is more than
Liquid mouth (2-1) cross-sectional area, setting card slot (2-3), the pump housing (2) open up threaded hole (2-5) on the pump housing (2) internal chamber wall
Structure；The bluff body (3) is equipped with rectangular buckle (3-1) and hook-type groove (3-2), and the hook-type groove (3-2) is resistance
The effect of backflow, the rectangular buckle (3-1) are fixed to each other with the card slot (2-3) on the pump housing (2) internal chamber wall；In described
The pump housing (5) is equipped with annular groove (5-1), clamp flange (5-2) and upper seal groove (5-3) structure, and the annular groove (5-1) places pressure
Electric tachometer indicator (6) and sealing rubber ring (7), the common securing trie piezoelectric oscillator (6) of upper cover (8), during the clamp flange (5-2) makes
The pump housing (5) is fastened with other structures；The upper cover (8) is equipped with groove clamp flange (8-1) and wire guide (8-2), described
Groove clamp flange (8-1) fastens the entire pump housing by trip bolt (9), and the wire guide (8-2) is being got lines crossed, by electric wire
It is connected with piezoelectric vibrator (6).
The bluff body (3) is matched with the pump housing (2), rectangular buckle (3-1) and the pump housing (2) of the bluff body (3)
On card slot (2-3) be combined, the middle pump body (5) is connected with the pump housing (2), and the sealing ring (4) is by the pump housing (2)
The upper seal groove (5-3) of lower seal groove cavity (2-2) and middle pump body (5) is connected with each other fastening, the piezoelectric vibrator (6) and middle pump body
(5) annular groove (5-1) structure is sealed by sealing rubber ring (7) and is compressed again by upper cover (8), the spiral shell of the pump housing (2)
Groove clamp flange (8-1) structure of pit (2-5) structure, clamp flange (5-2) structure of middle pump body (5) and upper cover (8) is logical
It crosses trip bolt (9) and fastening nut (1) is fastened.
The pump housing (2) upper surface opens up lower seal groove cavity (2-2) structure, by this lower seal groove cavity (2-2) structure pacifying
Put sealing ring (4).
The hook-type groove (3-2) of the bluff body (3), groove structure is from inlet (2-4) to liquid outlet (2-1)
It increases successively, about 20 degree of rise angle.
The hook-type groove (3-2) of the bluff body (3), which has, prevents reflux effect, when withdrawing fluid encounters hook-type groove
Convolution effect is will produce, withdrawing fluid is discharged to liquid outlet (2-1), reduces reflux, improves flow.
The utility model has the beneficial effects that：It is in about 20 to be provided with inside multiple hook-type bluff body Valveless piezoelectric pump multiple
Spend the hook-type bluff body that inclination angle rises so that when liquid outlet liquid reflux, withdrawing fluid can be realized at bluff body hook-type groove
The convolution of fluid realizes that the direction of withdrawing fluid changes, and withdrawing fluid is discharged from liquid outlet, to improve pump discharge.
Pumping passage space is gradually reduced from inlet to liquid outlet, is conducive to bluff body and is played a role, is also beneficial to liquid
Body enters from inlet, to improve pumpability.
The inlet cross-sectional area of the pump housing is more than liquid outlet cross-sectional area, is conducive to reduce reflux, realizes Valveless piezoelectric pump
Efficient pumping.
Description of the drawings
Fig. 1 show the exploded perspective view of the utility model；
Fig. 2 show the overall schematic of the utility model；
Fig. 3 show the structural schematic diagram of the pump housing of the utility model；
Fig. 4 show the structural schematic diagram of the bluff body of the utility model；
Fig. 5 show the structural schematic diagram of the middle pump body of the utility model；
Fig. 6 show the sectional view of the middle pump body of the utility model.
Specific implementation mode
In order to further appreciate that the structure, feature and other purposes of the utility model, in conjunction with appended preferred embodiment
Detailed description are as follows, and illustrated preferred embodiment is merely to illustrate the technical solution of the utility model, and non-limiting practicality
It is novel.
Specific embodiment of the present utility model is as follows：
As depicted in figs. 1 and 2, multiple hook-type bluff body Valveless piezoelectric pump include fastening nut 1, it is the pump housing 2, bluff body 3, close
Seal 4, middle pump body 5, piezoelectric vibrator 6, sealing rubber ring 7, upper cover 8 and trip bolt 9.
As shown in figure 3,2 front-end and back-end of the pump housing, which are set up separately, sets inlet 2-4 and liquid outlet 2-1, inlet 2-4 cross-sectional areas
More than liquid outlet 2-1 cross-sectional areas, 2 upper surface of the pump housing opens up lower seal groove cavity 2-2 structures, is tied by this lower seal groove cavity 2-2
To place sealing ring 4 card slot 2-3 is arranged on 2 internal chamber wall of the pump housing, the pump housing 2 opens up threaded hole 2-5 structures in structure.
As shown in figure 4, rectangular buckle 3-1 is arranged for bluff body 3 and hook-type groove 3-2, the hook-type groove 3-2 are resistances
The effect of backflow, hook-type groove 3-2 are increased along inlet 2-4 to the directions liquid outlet 2-1 successively, increase about 20 degree of inclination angle.
As shown in Figure 5 and Figure 6, annular groove 5-1, clamp flange 5-2 and upper seal groove 5-3 is arranged in middle pump body 5.
The annular groove 5-1 places piezoelectric vibrator 6 and sealing rubber ring 7,8 common securing trie piezoelectric oscillator 6 of upper cover, described tight
Gu flange 5-2 makes middle pump body 5 be fastened with other structures；The upper cover 8 is equipped with groove clamp flange 8-1 and wire guide 8-
2, the groove clamp flange 8-1 fasten the entire pump housing by trip bolt 9, and the wire guide 8-2 is getting lines crossed, by electric wire
It is connected with piezoelectric vibrator 6.
The bluff body 3 is matched with the pump housing 2, the rectangular buckle 3-1 and the card slot 2-3 on the pump housing 2 of the bluff body 3
It is combined, the middle pump body 5 is connected with the pump housing 2,2 lower seal groove cavity 2-2 of the pump housing, seal groove 5-3 and sealing on middle pump body 5
Circle 4 is connected with each other, and reaches the sealing of the pump housing and middle pump body.
The annular groove 5-1 of middle pump body 5 places piezoelectric vibrator 6 and compresses sealing jointly with sealing rubber ring 7 and upper cover 8.
As shown in Fig. 2, the clamp flange 5-2 of the threaded hole 2-5 of the pump housing 2, middle pump body 5 and the groove clamp flange of upper cover 8
8-1 is mutually fastened by fastening nut 1 and trip bolt 9.
The operation principle of piezoelectric pump is：By inverse piezoelectric effect, piezoelectric vibrator 6 generates dilatation, when piezoelectric vibrator 6
When to 8 Direction distortion of upper cover, liquid enters from inlet 2-4, and when piezoelectric vibrator is to 2 Direction distortion of the pump housing, liquid is from going out liquid
Mouth 2-1 discharges.
When liquid sucks the pump housing, liquid outlet 2-1 will produce backflow phenomenon, and multiple hook-type choked flow is provided in the pump housing 2
Body 3, withdrawing fluid generate liquid convolution at the hook-type groove 3-2 of bluff body 3, to reduce reflux effect, improve this valveless
The flow of piezoelectric pump.
During fluid flows in the pump housing 2 from inlet 2-4 to liquid outlet 2-1, from the upper surface of hook-type groove 3-2
Cambered surface flows through can reduce resistance well, be conducive to liquid flowing.
To further increase flow, the hook-type groove 3-2 for reducing reflux bluff body 3 is arranged to strip, increases choked flow
The area of 3 choked flow of body, realizes further increasing for flow.
2 lumenal cross-section of the pump housing is the circle that both sides carry rectangle, and the shape of bluff body 3 is also to carry rectangular bayonet 3-1
Circle, the pump housing 2 cooperate with bluff body 3 cooperate install.
In order to reduce the volume of pump, pump is in be cylindrical, and entire pump is using trip bolt 9, fastening nut 1 and screw thread
Hole matches, easy to disassemble.
Specific case used herein is expounded the principles of the present invention and embodiment, described above
It is adapted to assist in the method and its core concept for understanding the utility model.The above is only the preferred implementation side of the utility model
Formula, it is noted that due to the finiteness of literal expression, and objectively there is unlimited concrete structure, for the art
For those of ordinary skill, without departing from the principle of this utility model, several improvement, retouching can also be made or become
Change, above-mentioned technical characteristic can also be combined in the right way；These improve retouching, variation or combination, or without changing
Other occasions are directly applied to by the design of utility model and technical solution, are regarded as the protection model of the utility model
It encloses.
Claims (4)
1. a kind of multiple hook-type bluff body Valveless piezoelectric pump, by fastening nut (1), the pump housing (2), bluff body (3), sealing ring (4),
Middle pump body (5), piezoelectric vibrator (6), sealing rubber ring (7), upper cover (8) trip bolt (9) composition；
Wherein, the pump housing (2) is equipped with inlet (2-4) and liquid outlet (2-1), the inlet (2-4) in the pump housing (2)
Cross-sectional area be more than liquid outlet (2-1) cross-sectional area, the pump housing (2) upper surface opens up lower seal groove cavity (2-2) structure, passes through
Card slot (2-3), the pump is arranged on the pump housing (2) internal chamber wall to place sealing ring (4) in this lower seal groove cavity (2-2) structure
Body (2) opens up threaded hole (2-5) structure；The bluff body (3) is equipped with rectangular buckle (3-1) and hook-type groove (3-2), described
Hook-type groove (3-2) be the effect for preventing reflux, the card slot (2- on the rectangular buckle (3-1) and the pump housing (2) internal chamber wall
3) it is fixed to each other；The middle pump body (5) is equipped with annular groove (5-1), clamp flange (5-2) and upper seal groove (5-3) structure, described
Annular groove (5-1) places piezoelectric vibrator (6) and sealing rubber ring (7), the common securing trie piezoelectric oscillator (6) of upper cover (8), the fastening
Flange (5-2) is so that middle pump body (5) is fastened with other structures；The upper cover (8) is equipped with groove clamp flange (8-1) and leads
String holes (8-2), the groove clamp flange (8-1) fasten the entire pump housing, the wire guide (8-2) by trip bolt (9)
Get lines crossed, electric wire is connected with piezoelectric vibrator (6).
2. multiple hook-type bluff body Valveless piezoelectric pump according to claim 1, it is characterised in that：The bluff body (3)
It is matched with the pump housing (2), the rectangular buckle (3-1) of the bluff body (3) is combined with the card slot (2-3) on the pump housing (2), described
Middle pump body (5) be connected with the pump housing (2), the sealing ring (4) by the pump housing (2) lower seal groove cavity (2-2) and middle pump body (5)
Annular groove (5-1) structure of upper seal groove (5-3) interconnection fastening, the piezoelectric vibrator (6) and middle pump body (5) passes through close
Envelope rubber ring (7) seals again by upper cover (8) compression, threaded hole (2-5) structure of the pump housing (2), middle pump body (5) it is tight
Gu groove clamp flange (8-1) structure of flange (5-2) structure and upper cover (8) passes through trip bolt (9) and fastening nut (1) phase
Fastening.
3. multiple hook-type bluff body Valveless piezoelectric pump according to claim 1, it is characterised in that：The bluff body (3)
Hook-type groove (3-2) have prevent reflux effect, withdrawing fluid will produce when encountering hook-type groove convolution act on, withdrawing fluid
It is discharged to liquid outlet (2-1), reduces reflux, improve flow.
4. the multiple hook-type bluff body Valveless piezoelectric pump according to claim 1, it is characterised in that：The bluff body (3)
Hook-type groove (3-2), groove structure increases successively from inlet (2-4) to liquid outlet (2-1), rise angle about 20
Degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721453654.5U CN207750207U (en) | 2017-11-03 | 2017-11-03 | Multiple hook-type bluff body Valveless piezoelectric pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721453654.5U CN207750207U (en) | 2017-11-03 | 2017-11-03 | Multiple hook-type bluff body Valveless piezoelectric pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207750207U true CN207750207U (en) | 2018-08-21 |
Family
ID=63145889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721453654.5U Expired - Fee Related CN207750207U (en) | 2017-11-03 | 2017-11-03 | Multiple hook-type bluff body Valveless piezoelectric pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207750207U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594137A (en) * | 2019-10-28 | 2019-12-20 | 南京航空航天大学 | Plate-type valveless piezoelectric pump and working method thereof |
-
2017
- 2017-11-03 CN CN201721453654.5U patent/CN207750207U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594137A (en) * | 2019-10-28 | 2019-12-20 | 南京航空航天大学 | Plate-type valveless piezoelectric pump and working method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180821 Termination date: 20191103 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |