CN105673462A - Side-suction pipe liquid mixing and conveying valve-less piezoelectric pump - Google Patents
Side-suction pipe liquid mixing and conveying valve-less piezoelectric pump Download PDFInfo
- Publication number
- CN105673462A CN105673462A CN201610039193.0A CN201610039193A CN105673462A CN 105673462 A CN105673462 A CN 105673462A CN 201610039193 A CN201610039193 A CN 201610039193A CN 105673462 A CN105673462 A CN 105673462A
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- China
- Prior art keywords
- pump
- piezoelectric
- arm
- pad
- main
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- Granted
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- 239000007788 liquid Substances 0.000 title claims abstract description 38
- 238000002156 mixing Methods 0.000 title claims abstract description 17
- 239000000919 ceramic Substances 0.000 claims description 4
- 238000013022 venting Methods 0.000 claims description 3
- 230000007547 defect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
- F04B43/04—Pumps having electric drive
- F04B43/043—Micropumps
- F04B43/046—Micropumps with piezoelectric drive
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/0009—Special features
- F04B43/0027—Special features without valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention discloses a side-suction pipe liquid mixing and conveying valve-less piezoelectric pump, and belongs to the field of liquid machines. Two identical piezoelectric vibrators are mounted on the upper side and the lower side of a pump body face to face, the upper end face and the lower end face of the pump body are each provided with a counter bore, and the piezoelectric vibrators are mounted in the counter bores. A pump cavity is formed by the two piezoelectric vibrators and a space in the pump body and is cylindrical. A supporting plate is arranged on a middle surface of the pump cavity, and the upper piezoelectric vibrator and the lower piezoelectric vibrator are symmetrical with respect to the middle surface. The supporting plate is located in the middle of the pump cavity, a step is arranged between the supporting plate and the bottom face of one counter bore, the thickness of the supporting plate is made to be smaller than the height of the pump cavity, and the thickness of a cross beam is smaller than the height of the pump cavity. A circular main outer pipe and a circular main inner pipe are arranged in the middle of the end face perpendicular to the supporting plate, and a first branch pipe and a second branch pipe are further arranged in the supporting plate. By means of the side-suction pipe liquid mixing and conveying valve-less piezoelectric pump, two kinds of liquid are conveyed while being mixed through the piezoelectric pump, and the two kinds of liquid flow out of a liquid source all the time, so that the defect of low efficiency caused by repeated flowing of the liquid in a flow channel while an existing valve-less piezoelectric pump works is overcome.
Description
Technical field
The present invention relates to a kind of Valveless piezoelectric liquid mixing pump, belong to liquid machine field.
Background technology
Valveless piezoelectric pump configuration is simple, energy converting between mechanical efficiency height, reliability height, and in following health care, aerospace, the fields such as microcomputer electricity have broad application prospects. The present invention is put forward structure, together with liquid mixing can being combined in two functions of conveying, make two kinds of liquid while input, completing mixing, two kinds of liquid overcome this shortcoming, make Valveless piezoelectric pump at work, and in middle blending transportation process, liquid remains the state flowing into the pump housing, does not produce backflow so that it is can be applied in the occasion that fluid supply does not allow reverse direction flow.
Summary of the invention
It is an object of the invention to: what make piezoelectricity pump at mixing two kinds of liquid completes transportation work simultaneously. The two kinds of liquid effluent liquid body sources all the time being transferred, overcome current Valveless piezoelectric pump operationally, and liquid repeatedly flows in runner, causes inefficient defect.
Fig. 1 is the wiring layout of this pump principle of checking.
Side draught pipe liquid mixing conveying Valveless piezoelectric pump, it is characterized in that: two identical piezoelectric vibrators, with the side that piezoelectric ceramics polarity is identical, it is arranged on the both sides up and down of the pump housing face-to-face, two end faces up and down of the pump housing there is heavy hole, in heavy hole, piezoelectric vibrator is installed, space in two piezoelectric vibrators and the pump housing forms pump chamber, pump chamber is a cylindrical, the medium surface of pump chamber relative to upper and lower two piezoelectric vibrator symmetries there is a back up pad, back up pad is positioned in the middle part of pump chamber, a step is had between the bottom surface in back up pad and heavy hole, the thickness of back up pad is made to be less than the height in pump chamber, crossbeam thickness is less than the height in pump chamber, circular main outboard tube and main inside tube it is processed with in the mid-way of the end face being perpendicular to back up pad, the diameter of main outboard tube is greater than main inside tube, on the axis being perpendicular to main outboard tube and main inside tube, arm one and arm two also it is processed with in back up pad, the diameter of arm one and arm two is not more than main outboard tube, arm one is coaxial with arm two, and it is tangent with the junction surface of main outboard tube and main inside tube, arm one and arm two connect with outer pipeline to facilitate to be provided with boss outside the pump housing, main outboard tube is provided with multiple expansion chamber, expansion chamber is cylindrical, diameter is greater than main outboard tube, there is venting hole the side of the pump housing.
Further, area shared by back up pad is less than the half of pump chamber 13 sectional area.
Further, crossbeam is parallel to the end face of back up pad, with both ends of the surface parallel equidistant.
Further, section of beam is rectangle.
The principle of work of the side draught pipe liquid mixing conveying Valveless piezoelectric pump that the present invention proposes is described below: two piezoelectric vibrators 2 of pump access voltage of alternating current with identical polarity, two piezoelectric vibrators 2 are under the effect of voltage of alternating current, simultaneously to the outside in pump chamber or inner side warpage, it is located in first half cycle of voltage of alternating current two piezoelectric vibrators 2 simultaneously to the outside warpage (Fig. 6) in pump chamber, then the volume in pump chamber 13 increases, the pressure in pump chamber 13 reduces, liquid flows into main inside tube 11 along main outboard tube 5 and arm 1, arm 2 18, and enters pump chamber (Fig. 7), when voltage of alternating current enters the 2nd semi-period, voltage direction is contrary with first semi-period, piezoelectric vibrator 2 is warpage (Fig. 8) inwardly, the volume in pump chamber 13 reduces, pressure increase, liquid in pump chamber 13 is squeezed out pump chamber 13 along main inside tube 11, owing to the diameter of the main outboard tube of diameter ratio 5 of main inside tube 11 is little, therefore liquid is when flowing into main outboard tube 5 from main inside tube 11, lower scroll district can be produced at the friendship near interface of main inside tube 11 and main outboard tube 5, liquid in arm 1 and arm 2 18 is sucked main outboard tube 5, and flow out pump outer (Fig. 9) along main outboard tube 5 simultaneously, time in two kinds of liquid inflow pump chambeies 13, the obstruction of crossbeam 17 can be run into and produce complicated whirlpool group, thus two kinds of liquid are mixed in pump chamber 13, time outside liquid is discharged pump along main outboard tube 5, liquid, when multiple expansion chamber 16, also can produce turbulent flow, impel liquid mixing, describing it will be seen that pump is when mixing with conveying two kinds of liquid from above, the liquid in arm 1 and arm 2 18 always flows to main outboard tube 5, keeps uniflux.
Accompanying drawing explanation
Fig. 1 wiring layout
Fig. 2 AA pump housing 1 vertical view
Fig. 3 pump housing 1 front view
Fig. 4 pump housing 1 stereographic map
Fig. 5 pump housing 1 internal duct sectional view
The working drawing of the piezoelectric vibrator 2 of Fig. 6 pump when inhaling journey
The liquid-flow schematic diagram of Fig. 7 pump when inhaling journey
The working drawing of the piezoelectric vibrator 2 of Fig. 8 pump when scheduling
The liquid-flow schematic diagram of Fig. 9 pump when scheduling
Embodiment
Embodiment of the present invention is as Figure 1-Figure 5
Two identical piezoelectric vibrators 2, with the side that piezoelectric ceramics polarity is identical, it is arranged on the both sides up and down of the pump housing 1 face-to-face, the structure of the pump housing 1 is such as Fig. 2, Fig. 3, shown in Fig. 4 and Fig. 5, two end faces 12 up and down of the pump housing 1 there is heavy hole 6, in heavy hole 6, piezoelectric vibrator 2 is installed, two piezoelectric vibrators 2 form pump chamber 13 with the space in the pump housing 1, pump chamber 13 is a cylindrical, the medium surface of pump chamber 13 relative to upper and lower two piezoelectric vibrator 2 symmetries there is a back up pad 4, back up pad 4 is positioned in the middle part of pump chamber 13, area shared by back up pad 4 is less than the half of pump chamber 13 sectional area, a step 7 is had between the bottom surface in back up pad 4 and heavy hole 6, the thickness of back up pad 4 is made to be less than the height in pump chamber 13, cross section is the crossbeam 17 of rectangle, it is parallel to the end face 14 of back up pad, with both ends of the surface 12 parallel equidistant, crossbeam 17 thickness is less than the height in pump chamber 13, circular main outboard tube 5 and main inside tube 11 it is processed with in the mid-way of the end face 14 being perpendicular to back up pad, the diameter of main outboard tube 5 is greater than main inside tube 11, on the axis being perpendicular to main outboard tube 5 and main inside tube 11, circular arm 1 and circular arm 2 18 also it is processed with in back up pad 4, the diameter of arm 1 and arm 2 18 is not more than main outboard tube 5, arm 1 is coaxial with arm 2 18, and it is tangent with the junction surface 15 of main outboard tube 5 and main inside tube 11, arm 1 and arm 2 18 connect with outer pipeline to facilitate to be provided with boss 8 outside the pump housing 1, main outboard tube 5 is provided with multiple expansion chamber 16, expansion chamber is cylindrical, diameter is greater than main outboard tube 5, there is venting hole 10 side of the pump housing 1, exhausted air during for injecting liquid in pump chamber 13, close bolt 3 and fill liquid rear enclosed pump chamber 13 for pump chamber 13.
Piezoelectric vibrator 2 is connected on the pump housing 1 upper and lower surface with gluing, the diameter of chamber pump 13 is 18mm, the height in pump chamber is 1.6mm, the thickness of back up pad 4 is 1.2mm, the diameter of main outboard tube 5 is 0.8mm, the diameter of main inside tube 11 is 0.4mm, and the diameter of arm 1 and arm 2 18 is 0.7mm, piezoelectric vibrator 2 for brass plectane that 0.2mm is thick bonding with piezoelectric ceramics and become. Piezoelectric vibrator diameter 20mm, the pump housing 1 external diameter 23mm. Under the alternating-current effect of 50V, 50Hz, flow is 100g/min.
Claims (4)
1. side draught pipe liquid mixing conveying Valveless piezoelectric pump, it is characterized in that: two identical piezoelectric vibrators, with the side that piezoelectric ceramics polarity is identical, it is arranged on the both sides up and down of the pump housing face-to-face, two end faces up and down of the pump housing there is heavy hole, in heavy hole, piezoelectric vibrator is installed, space in two piezoelectric vibrators and the pump housing forms pump chamber, pump chamber is a cylindrical, the medium surface of pump chamber relative to upper and lower two piezoelectric vibrator symmetries there is a back up pad, back up pad is positioned in the middle part of pump chamber, a step is had between the bottom surface in back up pad and heavy hole, the thickness of back up pad is made to be less than the height in pump chamber, crossbeam thickness is less than the height in pump chamber, circular main outboard tube and main inside tube it is processed with in the mid-way of the end face being perpendicular to back up pad, the diameter of main outboard tube is greater than main inside tube, on the axis being perpendicular to main outboard tube and main inside tube, arm one and arm two also it is processed with in back up pad, the diameter of arm one and arm two is not more than main outboard tube, arm one is coaxial with arm two, and it is tangent with the junction surface of main outboard tube and main inside tube, arm one and arm two connect with outer pipeline to facilitate to be provided with boss outside the pump housing, main outboard tube is provided with multiple expansion chamber, expansion chamber is cylindrical, diameter is greater than main outboard tube, there is venting hole the side of the pump housing.
2. side draught pipe liquid mixing according to claim 1 conveying Valveless piezoelectric pump, it is characterised in that: area shared by back up pad is less than the half of pump chamber sectional area.
3. side draught pipe liquid mixing according to claim 1 conveying Valveless piezoelectric pump, it is characterised in that: crossbeam is parallel to the end face of back up pad, with both ends of the surface parallel equidistant.
4. side draught pipe liquid mixing according to claim 1 conveying Valveless piezoelectric pump, it is characterised in that: section of beam is rectangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610039193.0A CN105673462B (en) | 2016-01-21 | 2016-01-21 | Side draught pipe liquid blending transportation Valveless piezoelectric pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610039193.0A CN105673462B (en) | 2016-01-21 | 2016-01-21 | Side draught pipe liquid blending transportation Valveless piezoelectric pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105673462A true CN105673462A (en) | 2016-06-15 |
| CN105673462B CN105673462B (en) | 2017-07-28 |
Family
ID=56301776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610039193.0A Expired - Fee Related CN105673462B (en) | 2016-01-21 | 2016-01-21 | Side draught pipe liquid blending transportation Valveless piezoelectric pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105673462B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112196773A (en) * | 2020-10-04 | 2021-01-08 | 长春工业大学 | Annular cavity secondary vibration valveless piezoelectric pump |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10196551A (en) * | 1997-01-10 | 1998-07-31 | Noritake Kiyuutou:Kk | Slurry force-feeding pump |
| US6132187A (en) * | 1999-02-18 | 2000-10-17 | Ericson; Paul Leonard | Flex-actuated bistable dome pump |
| CN103752200A (en) * | 2013-11-11 | 2014-04-30 | 江苏大学 | Novel piezoelectric valveless micromixer |
| CN104405624A (en) * | 2014-10-11 | 2015-03-11 | 北京联合大学 | Valveless piezoelectric pump with segmentation different-diameter asymmetric arc-shaped pipe |
| CN104481860A (en) * | 2014-10-11 | 2015-04-01 | 北京联合大学 | Valveless piezoelectric pump of staggered annular flow pipe |
| CN104500373A (en) * | 2014-10-11 | 2015-04-08 | 北京联合大学 | Concatenation type valve-less piezoelectric pump of reducing pipe |
| CN204493143U (en) * | 2015-03-20 | 2015-07-22 | 青岛农业大学 | Bluff body Valveless piezoelectric pump |
-
2016
- 2016-01-21 CN CN201610039193.0A patent/CN105673462B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10196551A (en) * | 1997-01-10 | 1998-07-31 | Noritake Kiyuutou:Kk | Slurry force-feeding pump |
| US6132187A (en) * | 1999-02-18 | 2000-10-17 | Ericson; Paul Leonard | Flex-actuated bistable dome pump |
| CN103752200A (en) * | 2013-11-11 | 2014-04-30 | 江苏大学 | Novel piezoelectric valveless micromixer |
| CN104405624A (en) * | 2014-10-11 | 2015-03-11 | 北京联合大学 | Valveless piezoelectric pump with segmentation different-diameter asymmetric arc-shaped pipe |
| CN104481860A (en) * | 2014-10-11 | 2015-04-01 | 北京联合大学 | Valveless piezoelectric pump of staggered annular flow pipe |
| CN104500373A (en) * | 2014-10-11 | 2015-04-08 | 北京联合大学 | Concatenation type valve-less piezoelectric pump of reducing pipe |
| CN204493143U (en) * | 2015-03-20 | 2015-07-22 | 青岛农业大学 | Bluff body Valveless piezoelectric pump |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112196773A (en) * | 2020-10-04 | 2021-01-08 | 长春工业大学 | Annular cavity secondary vibration valveless piezoelectric pump |
| CN112196773B (en) * | 2020-10-04 | 2022-11-08 | 长春工业大学 | Annular cavity secondary vibration piezoelectric pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105673462B (en) | 2017-07-28 |
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Granted publication date: 20170728 Termination date: 20220121 |