CN202273846U - Umbrella valve special for piezoelectric pump - Google Patents
Umbrella valve special for piezoelectric pump Download PDFInfo
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- CN202273846U CN202273846U CN2011203248458U CN201120324845U CN202273846U CN 202273846 U CN202273846 U CN 202273846U CN 2011203248458 U CN2011203248458 U CN 2011203248458U CN 201120324845 U CN201120324845 U CN 201120324845U CN 202273846 U CN202273846 U CN 202273846U
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Abstract
The utility model relates to an umbrella valve special for a piezoelectric pump. In the background technology, a micropump valve is provided with an excitation source-free valve, a piezoelectric excitation valve, a heat-excitation valve, a memory alloy valve and the like, which all have certain defects. The valves are relatively complex in structure and high in manufacturing cost, and some are relatively poor in consistency and air tightness. The utility model aims to research the umbrella valve special for the piezoelectric pump. The umbrella valve consists of the umbrella valve and a valve frame, wherein a valve handle of the umbrella valve passes through and is positioned in a valve frame central through hole; and flowing through holes are distributed around the valve frame central through hole and are correspondingly matched with the opening and the closing of the unfolded umbrella valve. The umbrella valve has the advantages and characteristics of simple structure, high sensitivity, high sealing effect, low manufacturing cost and good working performance, and is suitable for fields and occasions of water treatment, chemical analysis, medical apparatuses, biomedicine, automatic control and the like of multiple kinds of fluid, including gas, water and particularly liquid.
Description
One, technical field
The utility model relates to a kind of micropump pump valve, refers in particular to a kind of umbrella valve that is exclusively used in piezoelectric pump.
Two, background technique
Micropump pump valve in the background technique has, no excitation source valve (passive valves), piezoelectric excitation valve, thermal excitation valve, static excitation valve, magnetic pumping valve, electromagnetism/static excitation valve, memory alloy valve, piezo electric valve etc.
The characteristic of above-mentioned valve is:
1, no excitation source valve: can be divided into two kinds on overhang one-way valve and bivalve door type valve.The working principle of this valve is, when overhang receive positive pressure in opened condition, liquid or gas gets into pump chamber, overhang receives backpressure and is closed condition, liquid or gas are directed extruding and discharge under the one-way valve effect.
The processing of this valve adopts electrochemistry to select to mix, and the dark etching of KOH etching and anisotropy technologies such as (EDP) becomes single valve body with the monoblock chip cutting at last.Each valve overhang is of a size of 600um*300um*10um, on a 25.4*25.4mm chip, can obtain 800 valves.The main feature of this valve is that response is fast, size is little, dead space volume is little.
Bivalve door type miniature valve, it is formed on two identical fan doors of size on the silicon chip in the opposite direction, and two flabellums of every fan door become 54.74 degree with silicon chip surface, and the slit between the flabellum is normally open, stitches wide 25um.The working principle of this valve is after positive pressure affacts on the diaphragm, to make the distortion by different way of the fan of two on it door; Left-hand door in opened condition, right door is closed condition, if change the pressure action direction, situation can be opposite.The processing of this valve adopts boron ionic diffusion, anisotropic etching, anode to weld and remove technologies such as oxide layer, and valve fan door is of a size of 780*1580*2um).Be applicable to that mainly the control media particle diameter is that 25um is with interior fluid system.
2, piezoelectric excitation valve: can be divided into forms such as normally closed, Chang Kai and threeway.The structure of Normally closed type piezo electric valve partly is made up of thermal glass base, pliability diaphragm, breathing pipe and the piezoelectric actuator etc. that are mesa structure.The working principle of this valve is that under normal circumstances silicon mesa links to each other with the air outlet and is closed condition; After the actuator energising, make diaphragm that recessed change take place, table top leaves the air outlet, and valve is in opened condition.Technologies such as anisotropic etching silicon, isotropic etching glass and discharge punching are adopted in the processing of this valve.The area of valve table top is 50um
2
The structure of piezo electric valve open in usual and normally close valve difference are; A gap is under normal circumstances arranged between the daylight opening DLO air outlet on the pliability silicon diaphragm, can supply fluid to pass through, when the piezoelectric actuator energising makes the convex change of table top; The air outlet is cut off, and valve is in closed condition.
The structure of three-way valve is that two table tops in center and annular are arranged on its silicon diaphragm.The center table top is normally open, and circular table is normally off.The working principle of this valve is that under normal circumstances fluid can valve port output from right valve port input.After to the piezoelectric actuator energising, center table top epirelief, circular table is recessed, and fluid can flow out by valve port from left valve port flows into.
3, thermal excitation valve: partly form by actuator (heating element), variable shaped beam or diaphragm and valve body etc. usually.The thermoelectric valve that utilizes principles such as bimetal deformation, thermal expansion and transmission of heat to process, it partly is made up of twin crystal overhang, convex diaphragm and valve body etc.The twin crystal overhang is a three-decker that is made up of heating resistor n type SI epitaxial layer, p type SI and metallization AI.The working principle of this valve is that under not energising situation, fluid can directly be mapped on the convex diaphragm and produce a downward pressure, makes the outlet of valve close tightlyer.After the heating resistor energising, owing to SI, two kinds of material coefficient of thermal expansion coefficients of AI difference make the overhang downwarping, with the inlet increasing of valve, fluid is injected convex diaphragm bottom pressure of generation and is made the diaphragm epirelief again, thereby open valve export fluid is gushed out.Technologies such as chemical etching, epitaxial growth, silicon direct bonding and anodization welding are adopted in the processing of this valve, and boundary dimension is 14.5*8.5*1.45mm, and the frequency of okperation of overhang can reach 1KHz.
4, static excitation valve: structure is made up of top, end conducting polymer shell and a trilamellar membrane chip architecture.The top drain pan is as exciting electrode, and diaphragm is made up of two strata phthalimides and one deck gold that is placed on their centres.The working principle of this valve is, when giving exciting electrode in addition behind the voltage, the pliability diaphragm will according to the direction of voltage with vary in size, produce convex-concave deformation, produce the gateway that respective direction and the pulsating pressure of size open or close valve in the resonant cavity thereby make.Technologies such as surface micro processing, mold pressing, etching, boring and LIGA are adopted in the processing of this valve.The diameter 3.3mm of diaphragm, thick 25um.
5, magnetic pumping valve: the structure of magnetic pumping valve partly is made up of last lower valve base, valve and magnetic pumping device etc.Valve is made up of polysilicon and magnetic material.The working principle of this valve is, under the action of a magnetic field that actuator produces, is arranged in the stressed motion up or down of valve of magnetic circuit, and the fluid of input is moved up or down.Technologies such as thermal oxidation, epitaxial growth, etching and LPCVD are adopted in the processing of this valve.Valve is of a size of 40*40*1um, and the gross area of valve is less than 100*100um.Its main feature is that size is little, driving force is big, and is applicable to the conveying of conducting liquid.
6, electromagnetism/(or) the static excitation valve: it is that electromagnetism, two kinds of energisation modes of static are combined and process miniature valve, and it is made up of permanent magnet and two silicon chips being placed between the magnet.Top silicon chip has conical flow inlet and top electrode; Below silicon chip with 4 overhangs the surface is scribbled the pliability diaphragm picking-up of metal film, and with go into flat resonant cavity of interruption-forming.The working principle of this valve is, utilize the Lorentz force that the pulsed voltage U1 that adds between the membrance electrode produces and add to diaphragm with reverse top electrode between pulsed voltage U2 generation Coulomb force make diaphragm deformation to open or close valve port; Watching during with the pulse persistance of U1 in the reality designs very shortly; And the endurance of U2 is longer; Therefore when U1 positive pulse close port; U2 simultaneously close port also keeps closing of a period of time valve in the U1 back that disappears, and U2 changes and keeps again a period of time simultaneously and changes during to next U1 positive pulse when the 2nd U1 negative impulse opened valve port.U1 plays the state exchange effect, and U2 plays state maintenance effect.IC standard and technologies such as LPCVD, anisotropic etching are adopted in the processing of this valve, and chip size is 8*2*3mm.
7, memory alloy valve: memory alloy valve (SMA) is at high temperature to be fired into definite shape, can be used as sensitivity or executive component after the cooling, and when energising is heated to uniform temperature with it, it will produce the power of recovering or partly recovering original shape.The normal worker's valve of the SMA beam type that utilizes this specific character to process, it by the SMA beam, gather imines diaphragm, cushion block, valve seat and breathing pipe etc. and partly form.The working principle of this valve is, after giving the energising of SMA beam, its deformation is passed to diaphragm through cushion block, makes diaphragm block breathing pipe to recessed change, thus throttle down.Technologies such as laser beam cutting, electrolytic photoetching, spin plated film are adopted in the processing of this valve, and the SMA beam is the NiT material, and the inside and outside diameter of valve seat is respectively 0.5mm and 1mm.Diaphragm thickness is 3um.The response time of switch valve is 0.5-1.2s.
8, piezo electric valve: piezo electric valve is to be incorporated into a new technology in the pneumatic valve to piezo technology.The tension force that in crystal structure, applies, pressure stress or shearing stress except producing corresponding distortion, also will induce dielectric polarization or electric field in crystal.This phenomenon is called as direct piezoelectric effect; Otherwise, if on this crystal, add electric field, thereby make this crystal produce electric polarization, then crystal also strain or stress, inverse piezoelectric effect that Here it is will occur simultaneously.Both are commonly referred to as piezoelectric effect.Piezo electric valve promptly utilizes the piezoelectric inverse effect and develops.
Piezo electric valve is to utilize the amount of deformation direct ratio of piezoelectric material and apply these characteristics of electric field strength above that, a proportional dump valve of exploitation.Because the piezoelectricity valve block does not receive mechanical friction power in deformation process, and has the fast characteristics of speed of response, can satisfy the application requirements of High Speed System; With respect to above-mentioned miniature pump valve, have advantages such as low in energy consumption, that response is fast, do not have electromagnetic interference, the life-span is long and can not generate heat.
Brief summary:
Above-mentioned no excitation source valve (passive valves) structure is comparatively simple, no exciting bank, can batch process, be suitable in micropump or the microsystem;
The above-mentioned various excitation source valve that has is easy to integrated and has good dynamic characteristic, is suitable for and the incorporate application of silicon heat-flow sensor, characteristics such as pneumostop property is good, and Young's modulus is low and with the IC process compatible;
Above-mentioned static and solenoid valve direction that can control flow rate and low in energy consumption;
Above-mentioned memory alloy valve can be exported high-tensile strength value or big displacement quantity in short space, be suitable for directly and the microsystem executive component supporting;
That above-mentioned piezo electric valve has is highly sensitive, speed of response is fast, can satisfy the application requirements of High Speed System; With respect to above-mentioned miniature pump valve, it has advantages such as low in energy consumption, that response is fast, do not have electromagnetic interference, the life-span is long and can not generate heat.In industry and process automation control field, have broad application prospects.
Though but the above-mentioned background technology has many advantages, also has shortcoming and defect in various degree: above-mentioned various valve bodies, structure more complicated; Manufacturing procedure is many, and technological requirement is consummate, and manufacture cost is high; Price is luxuriant and rich with fragrance right, with the piezoelectric pump product is supporting conveying (medium) liquid is had exacting terms and requirement, and assembly technology is complicated; Overall cost is high, and the ability to provide the auxiliary items of product is relatively poor, and market is difficult to popularize.
In background patents technology, the patent of invention that the inventor herein was once authorizing: " superminiature electronic pump " ZL01128771.3; " a kind of miniaturized hydraulic electronic pump and preparation process and method thereof " ZL 02114467.2; " miniaturized hydraulic electronic pump " ZL 02114470.2; " a kind of piezoelectric ceramic and micro air pump that is used to make micropump " ZL200510012575.6; " piezoelectric ceramic pump that is used for electronic product and CPU heat radiation cooling system " ZL200910109281.3 described that multiple type (shape) shape is different, unlike material structure, processing are simple; Cheap metal and pellosil single cantilever beam valve, spring pellosil plate valve, spring silica gel ball valve, rectangle elastic membrane plate valve, needle-valve; These valve bodies not only have the plurality of advantages of background technique but also have unrivaled price advantage of background technique and manufacture cost advantage; Its reason is that radially the drawing of being held that fixing back produces of the periphery when piezoelectric vibrator stretched and be out of shape, limit piezoelectric vibrator and can only upwards swell the axial mechanical motion that the generation convex-concave is out of shape; The pump valve liquid entering hole that is provided with; Can effectively improve the sensitivity of pump valve folding and property freely; And low-cost production capable of using is functional, and simple and practical one-way valve is made this one-way valve and needed only several sharing money; And the micropump pump valve of foregoing background technique needs dozens of yuan; Or even hundreds of unit, inventor herein's patented technology and above-mentioned background technological the micropump pump valve---no excitation source valve (passive valves), piezoelectric excitation valve, thermal excitation valve, static excitation valve, magnetic pumping valve, electromagnetism/static excitation valve, memory alloy valve, piezo electric valve are compared, manufacture cost is a thousandth of original micropump pump valve, or even ten thousand/.
Although the above-mentioned background patented technology has many advantages and characteristic, in industrialization and producing in enormous quantities, the relatively poor phenomenon of consistency of product and tightness still can appear, and cause the secondary rework rate of product higher thus, be difficult to improve work efficiency.Its main cause is:
1, with difformity; The metal that different structure is made, single cantilever beam valve are difficult to guarantee with technology and pattern assembly the flatness of installation valve body; And the fixing appropriate degree of pump valve intensity, thereby cause pump valve conformity and tightness weak effect phenomenon, influence the integral working of pump.
2, in this external working long hours, because the influence of the attachment of fluid (like water) medium, can accumulate gradually certain impurity or dirt are erected the overhang pad, the valve seal pad can not be resetted cause pressure release and gas leak phenomenon, reduce the service behaviour of pump.
3, the phenomenon of tearing, be out of shape and be shifted that high frequency motion causes very easily appears in its metal, single cantilever beam valve fixed end; Cause place's pressure release of valve film phonograph seal and gas leak phenomenon; Influence the integral working of piezoelectric pump self-priming effect, reduction piezoelectric pump, and fluid (gas) movement velocity and the quick-acting rates of biography.
Three, summary of the invention
The purpose of the utility model is to overcome the deficiency that above existing technology exists, and invents a kind of high-efficient single direction valve that is used for supporting piezoelectric pump, just develops the umbrella valve of a kind of being exclusively used in (fluid) piezoelectric pump.Be characterized in: this valve body have whole open cross properties of flow, have simple in structure, convenient and practical, folding freely, highly sensitive, speed of response fast, good sealing effect, low cost of manufacture, the good characteristics of service behaviour; Thoroughly solved piezoelectric pump pump valve production assembling existing frock technology with problem, and suitability for industrialized production.
The purpose of the utility model is through the pump valve structural design, and pump valve fixed support design cooperates rationally, improves the assembly technology of pump valve, optimizes pump chamber, and the unlatching that reaches pump valve is stressed evenly, cutoff performance is good, the purpose that suction capacity is good.Through test, working efficiency is compared with above-mentioned background technology pump valve, improves more than the 30%-100%.
The utlity model has simple in structure, speed of response is fast, volume is little, in light weight, noise free, pressure greatly, do not rush down pressure, non-return characteristics such as effective, easy to install.Can be different model, various piezoelectric pump products are supporting; Be applicable to multiple fluid such as scientific research, water treatment sampling, instrument and apparatus, chemical analysis, medical apparatus, medical and health, biomedicine, bioengineering, control automatically, water treatment, delicate metering, experiment detection, micrometeor dispensing, micro-total analysis system, chip lab and pcr chip, comprise gas, water, particularly liquid field and occasion.
To achieve these goals, the technical solution of the utility model is following: in order to explain better and to understand technology contents, below be with label in the said component unquote, so tired simultaneously referring to accompanying drawing and label declaration.
1, is exclusively used in the umbrella valve of piezoelectric pump; It is characterized in that: form by umbrella valve and vavle shelf; The valve handle of umbrella valve passes and is positioned at the vavle shelf central through bore; Be distributed with around this vavle shelf central through bore can whole opening and closing cross opening (6), this crosses cooperation corresponding that opening (6) and open umbrella valve umbrella are done opening and closing.
2, the described umbrella valve that is exclusively used in piezoelectric pump; It is characterized in that: described umbrella valve is umbrella valve A 1; Positive stop lug boss (5) is arranged on its valve handle, protruding above the open umbrella shape, cross the fitting surface of opening (6) fluid inlet and outlet below the open umbrella shape for plane conduct and vavle shelf.
3, the described umbrella valve that is exclusively used in piezoelectric pump; It is characterized in that: described umbrella valve is umbrella valve B 2; Positive stop lug boss (5) is arranged on its valve handle; Being the plane above the open umbrella shape, is downward circular sloped surface or circular cambered surface below the open umbrella shape, as crossing the fitting surface of opening (6) fluid inlet and outlet with vavle shelf.
4, the described umbrella valve that is exclusively used in piezoelectric pump; It is characterized in that: positive stop lug boss (5) is arranged on its valve handle of described umbrella valve; Above the open umbrella shape protruding or plane; Be upwards circular sloped surface or circular cambered surface below the open umbrella shape, as crossing the fitting surface of opening (6) fluid inlet and outlet with vavle shelf.
5, above-mentioned described any one is exclusively used in the umbrella valve of piezoelectric pump, it is characterized in that: umbrella valve is the one-way valve of beveled structure, and its material is a silicone rubber, valve body proportion 0.95-1.4g/m
3Between, between the thickness 0.30-0.8 millimeter, shore hardness also comprises any number wherein between the above-mentioned numerical value between the 48-56 degree.
6, above-mentioned described any one is exclusively used in the umbrella valve of piezoelectric pump, it is characterized in that: umbrella valve is the one-way valve of beveled structure, and its material is a silicone rubber, and valve body proportion is at 1.1-1.2g/m
3Between, thickness is between the 0.45-0.55 millimeter, and shore hardness also comprises any number wherein between the above-mentioned numerical value between the 49-52 degree.
7, above-mentioned described any one is exclusively used in the umbrella valve of piezoelectric pump, it is characterized in that: application methyl-silicone oil on umbrella valve and vavle shelf are worked in coordination face.
Change an angle, technical solution of the utility model and advantage and effect are:
1, design and produce a kind of beveled structure, one-way valve is characterized in: can under not varying sized situation, be the one-way valve that benchmark is made the various beveled structures of above-mentioned different model with this part; Applicable to be different model, various piezoelectric pump products are supporting.
2, the one-way valve of a kind of beveled structure of design; These one-way valve major technique characteristics are: the valve block material is a silicone rubber; Valve body proportion, thickness, shore hardness all have a span, according to the needs of loaded work piece pressure, and proportion, hardness and the thickness of adjustment pump valve material; And adapt to following and cooperating the pump valve sealing effect and the service behaviour of raising piezoelectricity air pump of pump valve and piezoelectric constant transducing sheet.
3, a kind of pump valve fixed support of design; This fixed support has characteristics simple in structure, easy to install; These support bracket fastened characteristics are: fixed support promptly is an important component part that is connected in the pump chamber; Can or reduce the seal diameter size in support bracket fastened periphery, increase and can change pump chamber, pressure increased perhaps reduce.
4, the utlity model has simple, practical, compact, advantage of low manufacturing cost and characteristic.
5, the utility model has thoroughly changed the shortcoming and defect that background technique exists and is; It does not need background technique complicated processing technology and manufacturing procedure; But utilize the properties of flow excessively of whole open valve and the technical characterstic of the utility model; Make valve body on both ends of the surface, produce uniform pressure difference, thereby automatically stable realization opening and closing work reach the effect of one-way valve.The umbrella shape one-way valve of the utility model is compared with above-mentioned background technique micropump pump valve, has tangible cost performance comprehensive characteristics; Comparing with above-mentioned background technology micropump pump valve manufacture cost, is a thousandth of its manufacture cost, or even ten thousand/.
6, test for parameters such as one-way valve structures umbrella shape; Through finite element simulation its theoretical delivery of derivation and area of passage formula; Combine simultaneously laboratory data to the design of umbrella shape one-way valve structures, performance comparison, cross properties of flow, leakage, characteristic such as withstand voltage is tested; Optimize the pump chamber structure, solve structural design and mutual rational proportion thereof between pump valve fixed support disk area and feed liquor, the discharge opeing area of passage, improve the property followed of pump valve and the whole work efficiency of piezoelectric pump.Stable performance, safe and reliable.
7, in order to reduce the whole operating noise that mechanical friction brings in the motion of umbrella shape one-way valve of opening; Strengthen the folding intensity of pump valve simultaneously, adopted the technology of application methyl-silicone oil on umbrella valve and vavle shelf are worked in coordination face (methyl-silicone oil of commercially available various models all can).Need to prove that methyl-silicone oil has remarkable heat-resisting quantity, lower temperature resistance, excellent electric insulation property, good ageing resistance; Have low surface tension, have nonpoisonous and tasteless physiology inertia, viscosity-temperature coefficient is low; Compressibility is higher, and volatility is low, and lubricity is better etc.Thereby whole open that umbrella shape one-way valve operating noise is low, folding freely, highly sensitive, speed of response soon, especially the umbrella shape one-way valve can prevent its skew in movement process, the sealing, stable work in work, the suction capacity that improve pump valve are good.
The structure of the utility model includes but not limited to said structure.
Four, description of drawings
Fig. 1 (a) is the structural representation of the embodiment 1 umbrella valve A of the utility model; The structural representation of the embodiment 2 umbrella valve B of Fig. 1 (b) the utility model; Fig. 2 (a) is embodiment's 1 among Fig. 1 (a) a working principle cross-sectional schematic; Fig. 2 (b) is embodiment's 2 among Fig. 1 (b) a working principle cross-sectional schematic; Fig. 3 is first kind of structural representation of vavle shelf A among the embodiment 1 of the utility model, and Fig. 4 is the A-A sectional view of Fig. 3; Fig. 5 is second kind of structural representation of vavle shelf A among the embodiment 1 of the utility model, and Fig. 6 is the B-B sectional view of Fig. 5; Fig. 7 is the third structural representation of vavle shelf A among the embodiment 1 of the utility model, and Fig. 8 is the C-C sectional view of Fig. 7; Fig. 9 is first kind of structural representation of vavle shelf B among the embodiment 2 of the utility model, and Figure 10 is the D-D sectional view of Fig. 9; Figure 11 is second kind of structural representation of the embodiment 2 vavle shelf B of the utility model, and Figure 12 is the E-E sectional view of Figure 11; Figure 13 is the third structural representation of the embodiment 2 vavle shelf B of the utility model, and Figure 14 is the F-F sectional view of Figure 13; Figure 15 is two structural representations into and out of umbrella valve of assembling on the vavle shelf of the utility model.
Label declaration among the above-mentioned figure: 1. umbrella valve A, 2. umbrella valve B, 3. vavle shelf A, 4. vavle shelf B, 5, positive stop lug boss, 6, cross opening.
Five, embodiment
Referring to Fig. 1 (a), this is a umbrella valve, and valve handle has positive stop lug boss 5 on (handle of umbrella perhaps is called handgrip), and these positive stop lug boss 5 cross sections are shapes such as " one " font, " cross " shape, " 3 points " shape, " circle " shape; Cross the face that opening 6 fluid inlet and outlets cooperate for the plane conduct with vavle shelf below the convexity above the open umbrella shape, open umbrella shape, this structure can be described as " umbrella valve A 1 ".
Referring to Fig. 1 (b); This umbrella valve and said structure are basic identical, and difference is on open umbrella shape, to be the plane to be downward inclined-plane (diagram) below; As crossing the face that opening 6 fluid inlet and outlets cooperate with vavle shelf, this structure can be described as " umbrella valve B 2 ".
Embodiment 1: referring to Fig. 2 (a); This is the structure that a umbrella valve A 1 is connected with vavle shelf A 3 and cooperates; Umbrella handle is through (passing) and be positioned at the hole at vavle shelf A 3 centers in other words among the umbrella valve A 1, and the positive stop lug boss 5 on its umbrella handle is stuck in outside vavle shelf A 3 through holes, and the pressure of both sides is different up and down because fluid acts on umbrella valve A 1 umbrella cover; Umbrella valve A 1 open umbrella shape plane can be pumped; Just as the butterfly's wing that circles in the air moves up and down, this umbrella valve A 1 open umbrella shape lower plane is crossed opening 6 with the fluid inlet and outlet above the vavle shelf A 3 and is done cooperating of opening and closing, and this crosses the characteristic that opening 6 has whole opening and closing.Also have a kind of mode that moves up and down in addition, place far away outside the positive stop lug boss on the umbrella handle among the umbrella valve A 15 is stuck in vavle shelf A 3 through holes, if any the 0.3-1 millimeter at a distance, then umbrella valve A 1 integral body can pump; Perhaps umbrella valve A 1 integral body and umbrella cover can pump jointly; Realize that in a word fluid inlet and outlets above umbrella valve A 1 open umbrella shape lower plane and the vavle shelf A 3 cross opening 6 and do cooperating of whole opening and closing.
Embodiment 2: referring to Fig. 2 (b); Basic identical with Fig. 2 (a); Difference is that the umbrella valve among Fig. 2 (b) is umbrella valve B 2, and this is the cross-sectional schematic that a umbrella valve B 2 is connected with vavle shelf B 4 and cooperates, among the up and down umbrella valve B 2 umbrella handle through and be arranged in the center hole of vavle shelf B 4; Positive stop lug boss 5 on its umbrella handle is stuck in vavle shelf B 4 through holes outside; Because fluid acts on the umbrella valve umbrella cover pressure difference of both sides up and down, makes umbrella valve B 2 open umbrella shape lower inclined planes cross opening 6 with the fluid inlet and outlets above the vavle shelf B 4 and does cooperating of opening and closing, and is better for what cooperate; Umbrella valve B 2 open umbrella shape lower inclined planes and conduct each other fitting surface corresponding with the inclined-plane above the vavle shelf B 4 crossed opening 6 and is positioned at above this vavle shelf B4 inclined-plane.
Embodiment 3: two embodiments' above being exactly is comprehensive; Be on its valve handle of described umbrella valve positive stop lug boss 5 to be arranged; It above the open umbrella shape the protruding plane that perhaps is; Be upwards circular sloped surface or circular cambered surface below the open umbrella shape, as crossing the fitting surface of opening (6) fluid inlet and outlet with vavle shelf.
Referring to Fig. 3 and Fig. 4, vavle shelf A 3 is as first kind of structural representation, and central through bore is uniformly distributed with the opening 6 excessively of three curved grooves in cross section as passing the umbrella valve valve handle around this central through bore, be used as the duct that fluid passes through.
Referring to Fig. 5 and Fig. 6, vavle shelf A 3 is as second kind of structural representation, and basically with Fig. 3 and Fig. 4, difference is the opening 6 excessively that is uniformly distributed with four curved grooves in cross section around vavle shelf A 3 central through bores.
Referring to Fig. 7 and Fig. 8, vavle shelf A 3 is as the third structural representation, and basically with Fig. 3 and Fig. 4, difference is to be uniformly distributed with the opening 6 excessively that three cross sections are garden shape around vavle shelf A 3 central through bores.Certainly being somebody's turn to do opening 6 also can have 2,4,5,6 etc. to be uniformly distributed with.
Referring to Fig. 9 and Figure 10, vavle shelf B 4 is as first kind of structural representation, and central through bore is uniformly distributed with the opening 6 excessively of three curved grooves in cross section as passing the umbrella valve valve handle around this central through bore, be used as the duct that fluid passes through.Basic identical with Fig. 3 and Fig. 4, difference is the vavle shelf B 4 that adopts, the fitting surface of rounded cambered surfaces of vavle shelf B 4 bottom surfaces (arc surface) or the conduct of rounded inclined-plane and the opening and closing of umbrella valve B 2 among Figure 10.See from Figure 10: vavle shelf B 4 bottom surface sections are circular arc line, see it is a recessed garden sphere (circular cambered surface) from three-dimensional viewpoin.
Referring to Figure 11 and Figure 12, vavle shelf B 4 is as second kind of structural representation, and basically with Fig. 9 and Figure 10, difference is the opening 6 excessively that is uniformly distributed with four curved grooves in cross section around this vavle shelf B 4 central through bores.
Referring to Figure 13 and Figure 14, vavle shelf B 4 is as the third structural representation, and basically with Fig. 9 and Figure 10, difference is to be uniformly distributed with three openings 6 excessively that the cross section is rounded around this vavle shelf B 4 central through bores.Certainly being somebody's turn to do opening 6 can have 2,4,5,6 etc. to be uniformly distributed with.
Referring to Figure 15, two one positive one anti-umbrella valve A 1 of assembling can be used as the valve into and out of fluid on vavle shelf A 3.This also is the working state schematic representation of above-mentioned each umbrella valve on vavle shelf.
Need to prove:
1, the various cross sections on above-mentioned vavle shelf A 3, the vavle shelf B 4 different, quantity is different crosses the passage that openings 6 all belong to fluid, all be with the open umbrella shape face of umbrella valve as the fluid inlet and outlet fitting surface.
2, be that the plane perhaps is downward circular sloped surface or downward circular cambered surface below the open umbrella shape of umbrella valve; Can also be circular sloped surface or circular cambered surface upwards below the open umbrella shape of umbrella valve, all can be used as the fitting surface of crossing opening (6) fluid inlet and outlet with vavle shelf.
3, umbrella valve is the one-way valve of beveled structure, and its material is a silicone rubber, valve body proportion 0.95-1.4g/m
3Between; Between the thickness 0.30-0.8 millimeter; Shore hardness is between the 48-56 degree; Also comprising any number wherein between the above-mentioned numerical value, is g/m such as 0.96,0.97,0.98,0.99,1.00,1.01,1.02,1.03,1.04,1.05,1.06,1.07,1.10,1.11,1.12,1.13,1.14,1.15,1.16,1.17,1.18,1.19,1.20,1.25,1.30,1.35,1.38,1.39,1.4 like valve body proportion
3As valve body thickness be 0.31,0.32,0.33,0.34,0.35...0.4,0.50,0.60,0.65,0.70,1.75,0.78,0.79, millimeter such as 0.8; Spend 48,49,50,51,52,53,54,55,56 like valve body shore hardness.According to test: the valve body proportion of umbrella valve is at 1.1-1.2g/m
3Between, thickness is between the 0.45-0.55 millimeter, and shore hardness is between the 49-52 degree time, and it is better that effect seems.
4, be merely the preferred embodiment of the utility model more than, but it does not limit the practical range of the utility model, promptly do not depart from equivalent variations and modification that the claim of the utility model is done, must belong to the protection domain of the utility model.
Claims (7)
1. be exclusively used in the umbrella valve of piezoelectric pump; It is characterized in that: form by umbrella valve and vavle shelf; The valve handle of umbrella valve passes and is positioned at the vavle shelf central through bore; Be distributed with around this vavle shelf central through bore can whole opening and closing cross opening (6), this crosses cooperation corresponding that opening (6) and open umbrella valve umbrella are done opening and closing.
2. the umbrella valve that is exclusively used in piezoelectric pump according to claim 1; It is characterized in that: described umbrella valve is umbrella valve A (1); Positive stop lug boss (5) is arranged on its valve handle; Be the fitting surface that plane conduct and vavle shelf are crossed opening (6) fluid inlet and outlet below the convexity above the open umbrella shape, open umbrella shape.
3. the umbrella valve that is exclusively used in piezoelectric pump according to claim 1; It is characterized in that: described umbrella valve is umbrella valve B (2); Positive stop lug boss (5) is arranged on its valve handle; Being the plane above the open umbrella shape, is downward circular sloped surface or circular cambered surface below the open umbrella shape, as crossing the fitting surface of opening (6) fluid inlet and outlet with vavle shelf.
4. the umbrella valve that is exclusively used in piezoelectric pump according to claim 1; It is characterized in that: positive stop lug boss (5) is arranged on its valve handle of described umbrella valve; Above the open umbrella shape protruding or plane; Be upwards circular sloped surface or circular cambered surface below the open umbrella shape, as crossing the fitting surface of opening (6) fluid inlet and outlet with vavle shelf.
5. according to any described umbrella valve that is exclusively used in piezoelectric pump of claim 1-4, it is characterized in that: umbrella valve is the one-way valve of beveled structure, and its material is a silicone rubber, valve body proportion 0.95-1.4g/m
3Between, between the thickness 0.30-0.8 millimeter, shore hardness also comprises any number wherein between the above-mentioned numerical value between the 48-56 degree.
6. according to any described umbrella valve that is exclusively used in piezoelectric pump of claim 1-4, it is characterized in that: umbrella valve is the one-way valve of beveled structure, and its material is a silicone rubber, and valve body proportion is at 1.1-1.2g/m
3Between, thickness is between the 0.45-0.55 millimeter, and shore hardness also comprises any number wherein between the above-mentioned numerical value between the 49-52 degree.
7. according to any described umbrella valve that is exclusively used in piezoelectric pump of claim 1-4, it is characterized in that: application methyl-silicone oil on umbrella valve and vavle shelf are worked in coordination face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203248458U CN202273846U (en) | 2011-08-31 | 2011-08-31 | Umbrella valve special for piezoelectric pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203248458U CN202273846U (en) | 2011-08-31 | 2011-08-31 | Umbrella valve special for piezoelectric pump |
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| Publication Number | Publication Date |
|---|---|
| CN202273846U true CN202273846U (en) | 2012-06-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011203248458U Expired - Fee Related CN202273846U (en) | 2011-08-31 | 2011-08-31 | Umbrella valve special for piezoelectric pump |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287365A (en) * | 2011-08-31 | 2011-12-21 | 胡军 | Umbrella-shaped valve special for piezoelectric pump |
| CN104632480A (en) * | 2015-01-09 | 2015-05-20 | 安徽江淮汽车股份有限公司 | Oil transfer pump oil return structure |
| CN105090012A (en) * | 2015-08-25 | 2015-11-25 | 李喆 | High-pressure valve block of reverse osmosis booster pump |
-
2011
- 2011-08-31 CN CN2011203248458U patent/CN202273846U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287365A (en) * | 2011-08-31 | 2011-12-21 | 胡军 | Umbrella-shaped valve special for piezoelectric pump |
| WO2013029406A1 (en) * | 2011-08-31 | 2013-03-07 | Yang Zhujun | Umbrella valve dedicated for use in piezoelectric pump |
| CN104632480A (en) * | 2015-01-09 | 2015-05-20 | 安徽江淮汽车股份有限公司 | Oil transfer pump oil return structure |
| CN105090012A (en) * | 2015-08-25 | 2015-11-25 | 李喆 | High-pressure valve block of reverse osmosis booster pump |
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