CN109162903A - A kind of novel circular plate type float trap piezoelectric pump - Google Patents
A kind of novel circular plate type float trap piezoelectric pump Download PDFInfo
- Publication number
- CN109162903A CN109162903A CN201811097730.2A CN201811097730A CN109162903A CN 109162903 A CN109162903 A CN 109162903A CN 201811097730 A CN201811097730 A CN 201811097730A CN 109162903 A CN109162903 A CN 109162903A
- Authority
- CN
- China
- Prior art keywords
- plate type
- circular plate
- pump
- type float
- opens
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000007788 liquid Substances 0.000 claims abstract description 30
- 210000004894 snout Anatomy 0.000 claims abstract description 15
- 238000007789 sealing Methods 0.000 claims abstract description 13
- 238000003491 array Methods 0.000 claims 1
- 238000000605 extraction Methods 0.000 claims 1
- 239000003814 drug Substances 0.000 abstract description 2
- 229940079593 drug Drugs 0.000 abstract description 2
- 238000005336 cracking Methods 0.000 abstract 1
- 239000007924 injection Substances 0.000 abstract 1
- 238000002347 injection Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
- F04B43/028—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms with in- or outlet valve arranged in the plate-like flexible member
-
- 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
- F04B53/10—Valves; Arrangement of valves
-
- 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
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
- F04B53/162—Adaptations of cylinders
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention discloses a kind of novel circular plate type float trap piezoelectric pumps, including lower pump body, upper pump casing, sealing ring, rubber ring, piezoelectric vibrator, upper cover, circular plate type float trap, fastening screw and fastening nut；The lower pump body opens up inlet and liquid outlet, upper pump casing opens up snout cavity and outlet plenum, circular plate type float trap is assembled at the cooperation of the upper pump casing snout cavity and lower pump body inlet, circular plate type float trap is also installed at the cooperation of the upper pump casing outlet plenum and lower pump body liquid outlet, it is sealed by a seal ring between the upper pump casing and lower pump body, the pump chamber top is installed by piezoelectric vibrator, piezoelectric vibrator is fixed by upper and lower two sealing rings, 4 threaded apertures of the upper cover circumference array, 4 screw holes of upper pump casing circumference array and lower pump body 4 threaded holes of each circumference array, piezoelectric pump is fixed in the cooperation by fastening screw and fastening nut；Circular plate type float trap of the invention has many advantages, such as that cracking pressure is small, piezoelectricity pump output flow is big, has a good application prospect in fields such as micrometeor drug injections.
Description
Technical field
The invention belongs to field of fluid machinery, specially a kind of novel circular plate type float trap piezoelectric pump.
Background technique
Piezoelectricity positive displacement pump is deformed piezoelectric vibrator using inverse piezoelectric effect, generates the volume of pump chamber and alternately becomes
Change, the inside and outside pressure difference that generates of pump chamber realizes the inflow and output of liquid under the effect of the pressure.Piezoelectric pump has small in size, smart
Degree is high, not by electromagnetic interference, mechanical wear is low the features such as, be widely used in aviation field, drug conveying, agricultural drop irrigation etc. and lead
Domain, while the defects of that there is output pressures is low for Valveless piezoelectric pump, and output flow is few, reflux is serious so that its practical application by
Great limitation is arrived, therefore, the output flow and output pressure for improving piezoelectric pump are the difficulties that current piezoelectric pump is faced
Topic.
Summary of the invention
The purpose of the present invention is in view of the above problems, a kind of novel circular plate type float trap piezoelectric pump is provided, to improve pressure
The output flow of electric pump.
In order to achieve the above object, the technical solution adopted by the present invention is that:
A kind of novel circular plate type float trap piezoelectric pump, it is characterised in that: including lower pump body (1), sealing ring (2), upper pump casing
(3), rubber ring (4), piezoelectric vibrator (5), upper cover (6), fastening screw (7), circular plate type float trap (8) and fastening nut (9)；
The lower pump body (1) opens up inlet (1-1) and liquid outlet (1-2), and it is close that upper pump casing (3) side opens up annular
Sealing groove (3-2), lower pump body side open up circular seal groove (1-4) structure, upper and lower by installation sealing ring (2) sealing
The pump housing, the upper pump casing (3) open up snout cavity (3-4) and outlet plenum (3-5) structure, the snout cavity that the upper pump casing (3) opens up
Circular plate type float trap (8) are installed at the cooperation for the inlet (1-1) that (3-4) and lower pump body (1) is opened up, the upper pump casing (3) is opened
If outlet plenum (3-5) and lower pump body (1) liquid outlet (1-2) cooperation for opening up at also install circular plate type float trap (8), it is described on
The lower seal groove cavity (3-3) of rubber ring (4) is placed in the setting of the pump housing (3) upper side, and upper pump casing (3) outboard side edge opens up placement rubber
Annular seal groove (3-2) structure of (4) is enclosed, the central part of the upper pump casing (3) installs piezoelectric vibrator (5), the piezoelectricity vibration
Sub (5) are fixed by installing lower two rubber rings (4), 4 threaded holes (1-3) of lower pump body (1) circumference array, on
4 screw holes (3-1) of the pump housing (3) circumference array, 4 threaded apertures (6-1) of upper cover (6) circumference array, by fastening screw (7) and
Fastening nut (9) cooperation achievees the purpose that fixed piezoelectric pump；
Further, upper end surface inlet (1-1) that the lower pump body (1) opens up opens up annulus rib (1-6) structure,
Netted baffle plate (1-5) structure is opened up at the liquid outlet of inlet annulus rib same level side；
Further, center snout cavity (3-4) that the upper pump casing (3) opens up opens up a hollow cylinder structure, passes through
4 hollow cylinder structures in 90 degree of fixed centers of distribution crossbeam that cavity wall is drawn；
Further, outlet plenum (3-5) diameter that the upper pump casing (3) opens up is smaller, prevented circular plate type float trap to
Upper pump casing (3) floats；
Further, the circular plate type float trap (8) is concavity, surrounding convex structure；
Further, upper cover (6) center opens up wire guide (6-2) structure, and upper cover (6) lower end opens up annular groove
(6-3) structure.
Of the invention has the prominent advantages that:
Lower pump body inlet of the present invention opens up annulus rib, and hollow cylinder structure is arranged in upper pump casing snout cavity, in its cooperation
Place's installation circular plate type float trap, traditional passive valve is replaced using circular plate type float trap, can preferably realize the inflow of liquid
With the output pump housing, liquid outlet is arranged identical structure, increases the output flow of the pump housing；
Piezoelectric vibrator is sealed using rubber ring up and down, ensure that its leakproofness, and secure piezoelectric vibrator, by tight
Gu piezoelectric pump is fixed in the cooperation of screw, fastening screw and threaded hole.
Detailed description of the invention
Fig. 1 is the sectional view of upper pump casing.
Fig. 2 is the structural schematic diagram of upper pump casing.
Fig. 3 is the sectional view of lower pump body.
Fig. 4 is the structural schematic diagram of lower pump body.
Fig. 5 is the structural schematic diagram of upper cover.
Fig. 6 is the explosive view of piezoelectric pump.
Fig. 7 is the sectional view of piezoelectric pump.
Specific embodiment
In order to make those skilled in the art more fully understand technical solution of the present invention, with reference to the accompanying drawing to the present invention into
Row detailed description, the description of this part be only it is exemplary and explanatory, should not have any limitation to protection scope of the present invention
Effect.
Please refer to Fig. 1~7, in the embodiment of the present invention, specific structure includes: lower pump body (1), sealing ring (2), upper pump casing
(3), rubber ring (4), piezoelectric vibrator (5), upper cover (6), fastening screw (7), circular plate type float trap (8) and fastening nut (9)；
The lower pump body (1) opens up inlet (1-1) and liquid outlet (1-2), and it is close that upper pump casing (3) side opens up annular
Sealing groove (3-2), lower pump body side open up circular seal groove (1-4) structure, upper and lower by installation sealing ring (2) sealing
The pump housing, the upper pump casing (3) open up snout cavity (3-4) and outlet plenum (3-5) structure, and the upper pump casing snout cavity (3-4) is under
Circular plate type float trap (8) are installed at the cooperation of pump housing inlet (1-1), the outlet plenum (3-5) that the upper pump casing (3) opens up is under
It is also installed circular plate type float trap (8) at liquid outlet (1-2) cooperation that the pump housing opens up, rubber is placed in the upper pump casing upper side setting
The lower seal groove cavity (3-3) of cushion rubber (4), upper pump casing outside side open up annular seal groove (3-2) structure for placing rubber ring (4),
The central part of the upper pump casing (3) installs piezoelectric vibrator (5), and the piezoelectric vibrator (5) is by installing lower two rubber rings
(4) it is fixed, 4 described 4 threaded holes (1-3) of lower pump body (1) circumference array, upper pump casing (3) circumference array screw hole (3-
1), 4 threaded apertures (6-1) of upper cover (6) circumference array reach fixed pressure by fastening screw (7) and fastening nut (9) cooperation
The purpose of electric pump；
Upper end surface inlet (1-1) that the lower pump body (1) opens up opens up annulus rib (1-6) structure, the feed liquor
Netted baffle plate (1-5) structure is opened up at the liquid outlet of mouth annulus rib same level side, when liquid flows out the pump housing, netted gear
Side (1-5) structure and annulus rib (1-6) structure can prevent the circular plate type float trap emersion pump housing；
Center snout cavity (3-4) that the upper pump casing (3) opens up opens up a hollow cylinder structure, is drawn by pump wall
4 are fixed centrally located hollow cylinder structure in 90 degree of distribution crossbeams, when liquid flows into upper pump casing (3) by inlet,
Prevent circular plate type float trap to float to upper pump casing (3)；
The circular plate type float trap (8) is upper and lower end towards concavity, and edge structure protruding to the outside can be more preferable
Cooperated with the upper and lower pump housing, make floating effect more preferably；
Outlet plenum (3-5) diameter that the upper pump casing (3) opens up is smaller, liquid reflux can be prevented, on liquid flows through
When the pump housing (3), the flowing velocity of liquid is increased, and can prevent circular plate type float trap from floating to upper pump casing (3)；
The upper cover (6) opens up annular groove (6-3) structure, and center opens up wire guide (6-2) structure, piezoelectric vibrator (5)
Conducting wire is drawn by this wire guide (6-2) and is attached with power supply.
The course of work packet sealing of the utility model patent includes first course of work and second course of work:
First course of work: giving the excitation of piezoelectric vibrator (5) ac signal, becomes when piezoelectric vibrator (5) is bent to upper cover
When shape, upper pump casing volume increases, and pressure reduces, and the pump housing is inside and outside to generate pressure difference, and under the effect of the pressure, liquid passes through lower pump body
Inlet (1-1) enter pump chamber, circular plate type float trap (8) under the influence of the impact force to snout cavity (3-4) float, Jin Eryu
Hollow cylinder following table face contact, liquid will pass through between gap flow into upper pump casing, partially liq can pass through liquid outlet stream at this time
Enter upper pump casing, the circular plate type float trap (8) of liquid outlet floats to the outlet plenum of upper pump casing, and then completely enclosed outlet plenum, makes liquid
Body cannot flow into inside upper pump casing；
Second course of work: when piezoelectric vibrator (5) is bent downwardly deformation, upper pump casing volume reduces, and pressure increases, and liquid exists
Under the action of pressure, upper pump casing is flowed out by snout cavity (3-4) and outlet plenum (3-5), under the influence of the impact force, snout cavity it
Between circular plate type float trap (8) float downwards, completely enclosed annulus rib, liquid cannot be by inlet (1-1) to outflow
Out, the circular plate type float trap (8) of outlet plenum floats to the netted baffle plate of lower pump body, and the opening degree of liquid outlet is made to reach maximum,
Liquid just flows out upper pump casing by the liquid outlet of lower pump body (1-1) just to be realized by the cycle operation of above-mentioned two course of work
Liquid continuously flows into and exports the pump housing.
Used herein a specific example illustrates the principle and implementation of the invention, and described above is applicable in
In facilitating the understanding of the method and its core concept of the invention.The above is only a preferred embodiment of the present invention, it is noted that
Due to the finiteness of literal expression, and objectively there is unlimited specific structure, for those skilled in the art
For, without departing from the principle of the present invention, several improvement, retouching or variation can also be made, it can also be by above-mentioned skill
Art feature is combined in the right way；These improve retouching, variation or combination, or not improved design and skill by invention
Art scheme directly applies to other occasions, is regarded as protection scope of the present invention.
Claims (6)
1. a kind of novel circular plate type float trap piezoelectric pump, it is characterised in that: including lower pump body (1), sealing ring (2), upper pump casing
(3), rubber ring (4), piezoelectric vibrator (5), upper cover (6), fastening screw (7), circular plate type float trap (8) and fastening nut (9)；Institute
It states lower pump body (1) and opens up inlet (1-1) and liquid outlet (1-2), upper pump casing (3) side opens up annular seal groove (3-2),
Lower pump body side opens up circular seal groove (1-4) structure, seals the upper and lower pump housing by installing sealing ring (2), it is described on
The pump housing (3) opens up snout cavity (3-4) and outlet plenum (3-5) structure, the snout cavity (3-4) that the upper pump casing (3) opens up and lower pump
Circular plate type float trap (8) are installed at the cooperation for the inlet (1-1) that body (1) opens up, the outlet plenum that the upper pump casing (3) opens up
It is also installed circular plate type float trap (8) at liquid outlet (1-2) cooperation that (3-5) and lower pump body (1) is opened up, on the upper pump casing (3)
The lower seal groove cavity (3-3) of rubber ring (4) is placed in the setting of portion side, and upper pump casing (3) outboard side edge opens up the ring for placing rubber ring (4)
The central part of shape seal groove (3-2) structure, the upper pump casing (3) installs piezoelectric vibrator (5), and the piezoelectric vibrator (5) passes through
It installs lower two rubber rings (4) to be fixed, described 4 threaded holes (1-3) of lower pump body (1) circumference array, upper pump casing (3) circle
4 screw holes (3-1) of all arrays, 4 threaded apertures (6-1) of upper cover (6) circumference array, pass through fastening screw (7) and fastening nut
(9) cooperation achievees the purpose that fixed piezoelectric pump.
2. a kind of novel circular plate type float trap piezoelectric pump according to claim 1, it is characterised in that: the lower pump body (1)
The upper end surface inlet (1-1) opened up opens up annulus rib (1-6) structure, inlet annulus rib same level side
Liquid outlet (1-2) at open up netted baffle plate (1-5) structure.
3. a kind of novel circular plate type float trap piezoelectric pump according to claim 1, it is characterised in that: the upper pump casing (3)
The center snout cavity (3-4) opened up opens up a hollow cylinder structure, is fixed by 4 of cavity wall extraction in 90 degree of distribution crossbeams
The hollow cylinder structure in center.
4. a kind of novel circular plate type float trap piezoelectric pump according to claim 1, it is characterised in that: the upper pump casing (1)
Outlet plenum (3-5) diameter opened up is smaller, has prevented circular plate type float trap and has floated into upper pump casing (3) inside.
5. a kind of novel circular plate type float trap according to claim 4, it is characterised in that: the circular plate type float trap (8)
For concavity, surrounding convex shape structure.
6. a kind of novel circular plate type float trap piezoelectric pump according to claim 1, it is characterised in that: in the upper cover (6)
Centre opens up wire guide (6-2) structure, and upper cover (6) lower end opens up annular groove (6-3) structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811097730.2A CN109162903A (en) | 2018-09-20 | 2018-09-20 | A kind of novel circular plate type float trap piezoelectric pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811097730.2A CN109162903A (en) | 2018-09-20 | 2018-09-20 | A kind of novel circular plate type float trap piezoelectric pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109162903A true CN109162903A (en) | 2019-01-08 |
Family
ID=64879852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811097730.2A Pending CN109162903A (en) | 2018-09-20 | 2018-09-20 | A kind of novel circular plate type float trap piezoelectric pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109162903A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973366A (en) * | 2019-04-11 | 2019-07-05 | 长春工业大学 | A kind of cone shaped elastic valve piezoelectric pump |
| CN112412736A (en) * | 2020-11-18 | 2021-02-26 | 青岛农业大学 | Multi-cavity piezoelectric gas-liquid pump |
| CN113123945A (en) * | 2021-04-26 | 2021-07-16 | 长春工业大学 | Tuning fork type resonant pump based on flexible support for agricultural sprinkling irrigation |
| CN113431765A (en) * | 2021-07-16 | 2021-09-24 | 华中科技大学 | Piezoelectric micro pump |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04113129A (en) * | 1990-08-31 | 1992-04-14 | Takagi Ind Co Ltd | Back flow preventing device |
| JP2002130135A (en) * | 2000-10-26 | 2002-05-09 | Matsushita Electric Ind Co Ltd | Diaphragm and pump device therewith |
| KR20040038319A (en) * | 2002-10-31 | 2004-05-08 | 손열삼 | Check valve |
| JP2006083848A (en) * | 2004-09-14 | 2006-03-30 | Samsung Electronics Co Ltd | Micro membrane pump |
| CN101054967A (en) * | 2007-05-25 | 2007-10-17 | 吉林大学 | Piezoelectric oscillator active valve type piezoelectric pump |
| CN103032297A (en) * | 2012-12-06 | 2013-04-10 | 浙江师范大学 | Piezoelectric pump based on disk type sensor valve |
| CN209083523U (en) * | 2018-09-20 | 2019-07-09 | 长春工业大学 | A kind of novel circular plate type float trap piezoelectric pump |
-
2018
- 2018-09-20 CN CN201811097730.2A patent/CN109162903A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04113129A (en) * | 1990-08-31 | 1992-04-14 | Takagi Ind Co Ltd | Back flow preventing device |
| JP2002130135A (en) * | 2000-10-26 | 2002-05-09 | Matsushita Electric Ind Co Ltd | Diaphragm and pump device therewith |
| KR20040038319A (en) * | 2002-10-31 | 2004-05-08 | 손열삼 | Check valve |
| JP2006083848A (en) * | 2004-09-14 | 2006-03-30 | Samsung Electronics Co Ltd | Micro membrane pump |
| CN101054967A (en) * | 2007-05-25 | 2007-10-17 | 吉林大学 | Piezoelectric oscillator active valve type piezoelectric pump |
| CN103032297A (en) * | 2012-12-06 | 2013-04-10 | 浙江师范大学 | Piezoelectric pump based on disk type sensor valve |
| CN209083523U (en) * | 2018-09-20 | 2019-07-09 | 长春工业大学 | A kind of novel circular plate type float trap piezoelectric pump |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973366A (en) * | 2019-04-11 | 2019-07-05 | 长春工业大学 | A kind of cone shaped elastic valve piezoelectric pump |
| CN112412736A (en) * | 2020-11-18 | 2021-02-26 | 青岛农业大学 | Multi-cavity piezoelectric gas-liquid pump |
| CN113123945A (en) * | 2021-04-26 | 2021-07-16 | 长春工业大学 | Tuning fork type resonant pump based on flexible support for agricultural sprinkling irrigation |
| CN113431765A (en) * | 2021-07-16 | 2021-09-24 | 华中科技大学 | Piezoelectric micro pump |
| CN113431765B (en) * | 2021-07-16 | 2022-08-02 | 华中科技大学 | Piezoelectric micro pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109162903A (en) | A kind of novel circular plate type float trap piezoelectric pump | |
| CN200989293Y (en) | Micro water spraying propulsion pump | |
| CN209083523U (en) | A kind of novel circular plate type float trap piezoelectric pump | |
| CN104265699B (en) | A kind of area ratio adjustable jet pump | |
| CN200999749Y (en) | Water pump blade wheel sealing device | |
| CN105508208A (en) | Piezoelectric pump | |
| CN108204355A (en) | A kind of 3 points of clamped membrane valve piezoelectric pumps | |
| CN204386959U (en) | A kind of area ratio adjustable jet pump | |
| CN208918796U (en) | A kind of floating type I-shaped valve piezoelectric pump | |
| CN109798239A (en) | A kind of Valveless piezoelectric pump of intracavitary a variety of bluff bodys | |
| CN208397378U (en) | A kind of pressure reducing valve | |
| CN102384075B (en) | Pump head structure of membrane booster pump | |
| CN201943938U (en) | Liquid inlet/outlet valve group structure | |
| CN205297880U (en) | Piezoelectric pump | |
| CN205977782U (en) | Guide pump body of class function and water pump of applied this pump body | |
| CN109162902B (en) | Floating type I-shaped valve piezoelectric pump | |
| CN205895687U (en) | Impeller subassembly in deep -well pump | |
| CN208996921U (en) | A kind of floating type cross valve piezoelectric pump | |
| CN111852811B (en) | Small-size domestic suction pump | |
| CN110439789B (en) | Single-cavity axial flow type valved piezoelectric pump and driving method | |
| CN207750209U (en) | A kind of planet-shaped piezoelectricity propulsion pump | |
| CN208057428U (en) | Easy-to-dismount centrifugal pump | |
| CN207989332U (en) | Centrifugal pump | |
| CN211231802U (en) | Air exhaust valve | |
| CN109162901B (en) | Floating cross valve piezoelectric pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |