CN2839640Y - Rotary plugged impression non-valve pressure electric pump - Google Patents
Rotary plugged impression non-valve pressure electric pump Download PDFInfo
- Publication number
- CN2839640Y CN2839640Y CN 200520129459 CN200520129459U CN2839640Y CN 2839640 Y CN2839640 Y CN 2839640Y CN 200520129459 CN200520129459 CN 200520129459 CN 200520129459 U CN200520129459 U CN 200520129459U CN 2839640 Y CN2839640 Y CN 2839640Y
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- pump
- rotary
- flow
- piezoelectric vibrator
- plugged
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- 230000001154 acute effect Effects 0.000 claims abstract description 4
- 238000000465 moulding Methods 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 239000012530 fluid Substances 0.000 description 17
- 238000000034 method Methods 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- 229920005372 Plexiglas® Polymers 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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Abstract
The utility model relates to a rotary plugged impression non valve piezoelectric pump. The utility model is characterized in that the front side of a piezoelectric vibrator (2) is a rotary plugged impression (5), the rotary plugged impression is matched to a pump body (6) with clearances, the side facing to the piezoelectric vibrator (2) is in a corrugated shape, each corrugated unit is composed of two intersecting planes which have unequal acute angles with the bottom surface of a pump chamber, and the group of corrugated units and the piezoelectric vibrator (2) form a tapered flow tube. The intersecting line of two planes of each corrugated unit is a corrugated line, and the corrugated lines are paralleled mutually. The rotary plugged impression (5) can rotate in the cavity, so the rake angle beta between the corrugated lines and the axis of a suction opening and a discharge opening can change from 0 DEG to 360 DEG, which leads to the change of the cone angle which crosses the axis of the suction opening and the discharge opening and is perpendicular to cross section of the plane of the piezoelectric vibrator, and the change is equivalent to the change of taper angle of the tapered flow tube and leads to the change of the flow quantity or the flow direction. The utility model can complete the regulation of the pump flow quantity and the change of the flow direction only through rotating the plugged impression in the pump cavity under the condition that a frequency converting circuit does not need to be added.
Description
Technical field
The utility model belongs to field of fluid machinery, relates to a kind of rotary abaculus valveless piezoelectric pump.
Background technique
Press valve body classification if belong to the piezoelectric pump of positive displacement, can be divided into valve and Valveless piezoelectric pump are arranged.If valve is defined as: in the suction and the process that spues of pump, have a time point at least, make pump chamber and suction port or spue between, produce disconnected mechanical device, so so-called " valveless " is exactly: at any time, pump chamber is with inlet or arrange between the mouth and all be communicated with.At this moment, the one-way flow of fluid is to rely on special mechanical device.This device has utilized the character of fluid, makes pump chamber be communicated with exhaust port with suction all the time, and can order about one-directional fluid flow.At present, Valveless piezoelectric pump adopts the form of a pair of inverted each other conical flow pipe more, Figure 1 shows that conical flow pipe Valveless piezoelectric pump.1 is the pump housing in Fig. 1, and 2 is piezoelectric vibrator, and 3 is that conical flow pipe A, 4 is for placing opposite conical flow pipe B with 3.Piezoelectric vibrator 2 is fixed on the pump housing as the loam cake of the pump housing 1.The a pair of opposite each other conical flow pipe of placing 3 and 4 is fixed on the suction port and exhaust port of the pump housing.Pump chamber has only two conical flow pipes 3 and 4 to be in communication with the outside.If the two ends at piezoelectric vibrator 2 apply alternating voltage, it will produce alternately elongation and contraction deformation, has just formed the volume-variation pump chamber like this in piezoelectric vibrator 2, the pump housing 1, two conical flow pipes 3 and 4 spaces of being formed.The adjusting of pump duty then relies on frequency changer circuit, is applied to the flow that the frequency of voltage on the piezoelectric vibrator is come control pump by adjusting.This method not only needs complicated frequency changer circuit to come the control pump flow, and can not change the flow direction of fluid.
The model utility content
The purpose of this utility model is to provide a kind of and controls the piezoelectric pump of the Valveless piezoelectric pump duty and the flow direction by rotating the pump chamber embedded block, is aided with the pattern that control piezoelectric vibrator vibration frequency is come the control pump flow to substitute present conical flow pipe.
The utility model provides a kind of and need not additional frequency changer circuit and the Valveless piezoelectric pump of controlled change flow, and the utility model not only can change the flow of Valveless piezoelectric pump, and can change the flow direction of Valveless piezoelectric pump.The technological scheme that the utility model adopted is referring to Fig. 2～3, piezoelectric vibrator 2 connects firmly with the pump housing 6, the right opposite of piezoelectric vibrator 2 is a rotatable rotary abaculus 5, this rotary abaculus 5 connects with the pump housing 6 Spielpassung, the one side that rotary abaculus 5 faces piezoelectric vibrator 2 is the ripple undulations, each ripple unit constitutes asymmetric undulations by two planes of intersecting of not waiting with the folded acute angle in pump chamber bottom surface, constitute tapered runner between this group ripple unit and the piezoelectric vibrator 2, the intersection that constitutes two planes of ripple unit is called wave molding, all the wave molding of ripple unit constitutes one group of parallel lines, because rotary abaculus 5 can rotate in the pump housing, so wave molding and pump chamber suction port, the angle β that the axis of exhaust port forms can change between 0 ° to 360 °, this variation can cause that relief is changed by the cone angle in the cross section of crossing suction port and exhaust port axis and cutting perpendicular to the plane of piezoelectric vibrator, change has taken place in the cone angle that is equivalent to the conical flow pipe, thereby cause the variation of flow and flow direction: when angle of inclination beta=0 °, flow is 0; When angle of inclination beta=90 °, the flow maximum; Flow is when angle of inclination beta＞90 °, and flow reduces; When angle of inclination beta=180 °, flow is 0; When angle of inclination beta＞180 °, the flow direction of fluid changes; When angle of inclination beta=270 °, flow maximum in the other direction.
D among Fig. 3 (b)
1-D
1, D
2-D
2... D
N-1-D
N-1, D
n-D
nBe the intersection on ripple plane, i.e. wave molding.D
1-D
1, D
2-D
2... D
N-1-D
N-1, D
n-D
nBetween be parallel to each other.The axis of suction port and exhaust port is C-C; Then C-C and random wave streakline D
i-D
iWhen becoming the zero degree angle, rotary abaculus valveless piezoelectric pump can not be realized FLUID TRANSPORTATION, C-C and D
i-D
iWhen becoming the non-zero angle angle, rotary abaculus valveless piezoelectric pump all can be realized FLUID TRANSPORTATION.
Owing to the acute angle that ripple and pump chamber bottom surface are folded is different, thus the flow resistance difference that produces, thus when the piezoelectric vibrator to-and-fro motion, the fluid that reversing current is crossed in the pump chamber can produce difference in flow, and this difference in flow shows as the flow of fluid of single movement direction on macroscopic view.The Valveless piezoelectric pump working principle of concrete rotation rotary abaculus can be made description below.
Fig. 4 is for inhaling the journey fundamental diagram.When piezoelectric vibrator 2 moves upward, that is: piezoelectric vibration 2 moves to the pump chamber increase of F-F position among Fig. 4 (a) from the E-E position, fluid is inhaled into pump chamber by rotary abaculus 5, because the existence of asymmetric ripple, the mountain top of asymmetric ripple is divided into collapsible tube and expanding duct with asymmetric ripple, as for when being collapsible tube specifically, when be expanding duct, determine by the flow direction in the instantaneous pump.Consider any one ripple in the rotary abaculus 5, the rotary abaculus that does not wait at the inclination angle flows with a left side to the right simultaneously from a left side and right both sides respectively; Suppose the mobile left side that occurs in mountain top when flowing from left to right of this moment, the right side on mountain top when flowing from right to left again; Rotary abaculus Right deviation angle is less than left-leaning angle in Fig. 3 (a), and inclination angle, the left and right sides all belongs to collapsible tube, but since the Right deviation angle less than left-leaning angle, the right collapsible tube flow resistance of any one ripple is less than left collapsible tube flow resistance in the rotary abaculus 5; In shrinking pipeline section, the big flow of flow resistance is little, and the instantaneous flow that flows to the right from left collapsible tube is less than the instantaneous flow that flows left from right collapsible tube.Cross the mountain top when flowing, aforesaid hypothesis flows, and just occurs in the right side on next mountain top when flowing from left to right, the left side on next mountain top when flowing from left to right again; Rotary abaculus Right deviation angle is less than left-leaning angle in Fig. 3 (a), and inclination angle, the left and right sides all belongs to expanding duct, but since the Right deviation angle less than left-leaning angle, the right expanding duct flow resistance of ripple is less than left expanding duct flow resistance in the rotary abaculus 5; In the expansion pipeline section, the big flow of flow resistance is little, and the instantaneous flow that flows to the right from left expanding duct is greater than the instantaneous flow that flows left from right expanding duct.And comprehensive The above results: when inhaling journey, ripple small inclination limit is greater than the flow of the instantaneous inflow pump chamber of the ripple decline arm of angle.
Scheduling working principle and suction Cheng Tongli.Can obtain with above-mentioned methods analyst, during scheduling, ripple small inclination limit is less than the flow of the instantaneous outflow pump chamber of the ripple decline arm of angle.
Appearance so repeatedly sucks and discharges engineering, ripple small inclination limit just becomes suction port on the macroscopic view, and the ripple decline arm of angle just becomes exhaust port, and fluid flows into pump chamber from ripple small inclination limit, fluid has just realized also that from the ripple decline arm of angle efflux pump chamber folk prescription is to flowing.
When the cone angle of collapsible tube or expanding duct changed, corresponding variation also took place in its flow resistance.Using this principle can realize realizing regulating pump duty by rotation rotary abaculus 5.Defined suction port and exhaust port axis and be principal plane, as shown in Figure 5 perpendicular to the plane of piezoelectric vibrator.The flow direction of fluid macroscopic view is along the principal plane direction.When rotary abaculus 5 rotations, each ripple unit is changed by the angle of the triangular-section that principal plane P is cut, and promptly variation has taken place for cone angle ∠ BDC and ∠ CBD.This mobile flow resistance of fluid that will cause flowing through them changes, thereby causes the variation of the flow or the flow direction.When angle of inclination beta=0 °, flow is 0.When angle of inclination beta=90 °, the flow maximum.Flow is when angle of inclination beta＞90 °, and flow reduces.When angle of inclination beta=180 °, flow is 0.When angle of inclination beta＞180 °, the flow direction of fluid changes.When angle of inclination beta=270 °, flow maximum in the other direction.
The utility model has been abandoned the conical flow pipe, and can only just can finish the Flow-rate adjustment of pump by the abaculus in the rotation pump chamber under the situation that does not need additional frequency changer circuit.And the utility model not only can be regulated the flow of Valveless piezoelectric pump, and can change the flow direction by the fluid of Valveless piezoelectric pump, and promptly pump intake and exhaust port can be put upside down mutually.
Description of drawings
Fig. 1 is traditional conical flow pipe Valveless piezoelectric pump;
Wherein:
1, the conical flow pipe piezoelectric pump pump housing 2, piezoelectric vibrator 3, conical flow pipe A 4, conical flow pipe B
Fig. 2 is a rotary abaculus valveless piezoelectric pump of the present utility model;
Fig. 2 (a) is the C-C cross section of Fig. 2 (b), and Fig. 2 (b) is the A-A cross section of Fig. 2 (a); Wherein:
5, rotary abaculus 6, the rotary abaculus piezoelectric pump pump housing
Fig. 3 (a) is the plan view of rotary abaculus;
Fig. 3 (b) is the shaft side figure of rotary abaculus;
Fig. 4 inhales the journey fundamental diagram;
Fig. 5 ripple unit is by schematic representation that principal plane cuts;
Fig. 6 embodiment of the present utility model;
Fig. 6 (a) is Fig. 6 (b) B-B cross section, and Fig. 6 (b) is Fig. 6 (a) A-A cross section;
Wherein:
7, sealing cover 8, fixed plate screw 9, conduit 10, pump chamber lid 11, screw 12, embedded magnet 13, external drive magnet.
Embodiment
Example structure of the present utility model such as Fig. 6 show that the employing piezoelectric vibrator is 30mm; Working power is voltage 220V, the 50Hz Ac; The α of piezoelectric vibrator
1=90 °, α
2=30 ° when ripple is counted n=4, is the experiment working medium with water, and the left and right sides runner of pump produces the water column that is pressure reduction 6mm to the maximum.
The commercially available sealer of conduit 9 usefulness is fixed on the pump chamber loam cake 10, sealing cover 7 uses fixed plate screw 8 fixing with loam cake 10, rotary abaculus 5 adopts the mode of Spielpassung to be assembled together with the pump housing 6 before loam cake 10 is installed, embedded magnet 12 is glued in the rotary abaculus 5, and loam cake 10 tightens together with pump chamber 6 usefulness screws 11.Piezoelectric vibrator 2 is commercially available non-standard component, and screw 11 is a standard piece, and the used part of other pump processes by plexiglass or metal, and rotary abaculus 5 is driven by external drive magnet 13, and when external drive magnet 13 rotated, rotary abaculus 5 was driven to rotate.
Claims (1)
1, rotary abaculus valveless piezoelectric pump, comprise the pump housing (6), the piezoelectric vibrator (2) that connects firmly with the pump housing (6), it is characterized in that: the right opposite at piezoelectric vibrator (2) is provided with rotatable rotary abaculus (5), this rotary abaculus (5) connects with the pump housing (6) Spielpassung, can in the pump housing (6), rotate, the one side that rotary abaculus (5) faces piezoelectric vibrator (2) is the ripple undulations, each ripple unit constitutes asymmetric undulations by two planes of intersecting of not waiting with the folded acute angle in pump chamber bottom surface, constitute tapered runner between this group ripple unit and the piezoelectric vibrator (2), all the wave molding of ripple unit constitutes one group of parallel lines, and described wave molding is the intersection on two planes of formation ripple unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520129459 CN2839640Y (en) | 2005-10-21 | 2005-10-21 | Rotary plugged impression non-valve pressure electric pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520129459 CN2839640Y (en) | 2005-10-21 | 2005-10-21 | Rotary plugged impression non-valve pressure electric pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2839640Y true CN2839640Y (en) | 2006-11-22 |
Family
ID=37427624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520129459 Expired - Lifetime CN2839640Y (en) | 2005-10-21 | 2005-10-21 | Rotary plugged impression non-valve pressure electric pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2839640Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100338363C (en) * | 2005-10-21 | 2007-09-19 | 北京工业大学 | Rotary abaculus valveless piezoelectric pump |
| CN102913422A (en) * | 2012-10-18 | 2013-02-06 | 南京航空航天大学 | Drag-reducing valveless piezoelectric pump with drag-reducing fluids |
-
2005
- 2005-10-21 CN CN 200520129459 patent/CN2839640Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100338363C (en) * | 2005-10-21 | 2007-09-19 | 北京工业大学 | Rotary abaculus valveless piezoelectric pump |
| CN102913422A (en) * | 2012-10-18 | 2013-02-06 | 南京航空航天大学 | Drag-reducing valveless piezoelectric pump with drag-reducing fluids |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20051021 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |