CN1039302A - Liquid volumeter - Google Patents
Liquid volumeter Download PDFInfo
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- CN1039302A CN1039302A CN 88105305 CN88105305A CN1039302A CN 1039302 A CN1039302 A CN 1039302A CN 88105305 CN88105305 CN 88105305 CN 88105305 A CN88105305 A CN 88105305A CN 1039302 A CN1039302 A CN 1039302A
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- piston
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Abstract
Apparatus of the present invention are a kind of dilution of liquid, volume measuring instruments that suction moves and distributes of being used for, and it mainly is made up of quantity tube, two Y four-way piston, liquid volume calibration element, pipet gun and two pressure sources.Four outlets of two Y four-way pistons are connected with two quantity tubes, feed tube and volumetric pipettes respectively, are provided with the piston that moves about in quantity tube.With the pressure source is power, by rotate two Y four-way piston cores and open spring clamp make quantity tube respectively with being communicated with of feed tube or volumetric pipette, promote liquid turnover quantity tube by pressure, to reach the purpose of liquid meter (dilution, inhale and move and distribute).
Description
The invention belongs to the liquid measure device, is a kind of dilution of liquid, volume measuring instrument that suction moves and distributes of being used for.
Put into practice in the work in scientific experiment and chemical analysis etc., usually need metering liquid volume critically.Traditional liquid meter such as measuring cup, buret, syringe, transfer pipet etc.,, poor accuracy low because of efficient in practical operation are difficult to satisfy the dilution of liquid fast precise, inhale the requirement that moves and distribute.For this reason, some producers have developed multiple single function or bifunctional liquid meter instrument both at home and abroad.The adjustable quantitative charger of industrial group (LABINDUSTRIES), Qiujing Glass Instrument Factory, Shanghai's production and the proportional diluter of Danyang Da Bo analytical instrument factory production etc. are tested by the single function meter such as the U.S., adopt syringe and two automatic pistons to link, visual to scalar quantity, it is power that hand push draws piston, unpick and wash and change the liquid difficulty, distribution or dilution precision are lower.And for example the pipettor produced of Danyang Da Bo analytical instrument factory adopts close one group of suction pipe of piston pump housing band of joining, and each liquid sample is used a suction pipe instead, by gas pressure change imbibition discharge opeing in suction pipe, because that gas easily produces volume compression is poor, makes the precision reduction.Dilution/divider (Dilutor/Dispenser) that the difunctional meter such as the U.S. smooth company in climing Louth (MANOSTAT) produces adopts two syringes of size to link to each other by a solenoid valve, big syringe is connected with the feed tube of one-way plug one, little syringe connects the pipette of certain interior electrical path length, visual to scalar quantity, motor-driven piston, but it costs an arm and a leg, and precision does not reach the franchise requirement of chemical macro-analysis yet.From present similar products at home and abroad, generally inhaling the precision franchise of moving and distributing is 1～2%, and dilution precision franchise does not far reach the requirement of chemical macro-analysis franchise 0.3% between 2～5%.On function, also still none instrument has dilution simultaneously, moves liquid, distributes the device of three functions.
Purpose of the present invention designs exactly and a kind ofly unpicks and washes conveniently, practicality, promptly has the liquid rapid dilution, inhales and move and distribute three kinds of functions, can reach the liquid-volume measurement apparatus of chemical macro-analysis franchise accuracy requirement again.
For this reason, this device has adopted in design with two y four-way pistons quantity tube has been connected with feed tube and volumetric pipette respectively, in quantity tube, be provided with the piston that moves about, demarcate the amount of liquid that quantity tube enters or discharges with the control stroke of piston in quantity tube that move about, with the pressure source powered piston the moving in quantity tube of moving about, to reach the purpose of liquid turnover quantity tube.
Apparatus of the present invention mainly are made up of the pressure source of two quantity tubes, two y four-way piston, liquid calibration element, pipet gun, two different pressures.Its detail and embodiment are illustrated in conjunction with the accompanying drawings:
Accompanying drawing is the structural representation of apparatus of the present invention.Wherein Fig. 1 is whole structure drawing of device; Fig. 2 is two y four-way piston cut-open views, and wherein a is a sectional side elevation, and b is cross-sectional figure, i.e. the A-A cut-open view of a, and C is the B-B cut-open view of a; Fig. 3 is the cut-open view of pipet gun.
Among the figure, 1 and 2 is quantity tube, 3 and 4 are respectively the piston that moves about that is located in quantity tube 1 and 2,5 and 6 are respectively the shelves plug at zero point on quantity tube 1 and 2 tops, 7 and 8 are respectively the quantitative shelves plug of the stroke of controlling move about piston 3 and 4 in quantity tube 1 and 2,9 and 10 are respectively the backstay (retaining stopper rod) of quantitative retaining plug 7 and 8,11 and 12 is the sealing shroud of the quantity tube 1 and 2 other ends, 13 and 14 is the corresponding scale of quantity tube 1 and 2,15 and 16 for demarcating the vernier of quantity tube 1 and 2 turnover liquid measures, 17 and 18 is 15 and 16 backstay (vernier bar), 19 is can promote to move about piston 3 and 4 to retaining plug 5 and 6 pressure sources that move at zero point, 20 tracheaes that lead to quantity tube 1 and 2 for pressure source 19,21 is two y four-way piston cores, 22 is two y four-way piston covers, 23 is volumetric pipette, 24 are the ball bubble, 25 is feed tube, 26 for holding the liquid bottle of thinning agent (or liquid to be allocated), 27 for containing the imbibition bottle with sucker for the treatment of dilution (or liquid to be moved), 28 is the pressure source that liquid enters quantity tube and volumetric pipette in promotion liquid bottle 26 and the imbibition bottle with sucker 27,29 is the spring clamp of pipet gun, 30 is pipet gun and the tracheae that is connected of pressure source 28,31 is the pipet gun plug, 32 is pressure source 28 and the tracheae that is connected of liquid bottle 26, and 33 is the liquid bottle stopper, and 34 is liquid receptacle.
The quantity tube 1 and 2 that apparatus of the present invention are selected for use, its inwall should be respectively with move about piston 3 and 4 close joining, can make the piston 3 and 4 that moves about in quantity tube 1 and 2, do axially-movable, the gas-liquid that can isolate the piston both sides of moving about again is string mutually mutually.Two quantity tubes 1 and 2 big I according to dilution, inhale and move and assignment scope and require selectedly, can select the quantity tube of same size size for use, also can select the pipe of different capabilities for use.
In order to control the piston 3(or 4 that moves about) at quantity tube 1(or 2) in stroke, should be at quantity tube 1(or 2) be provided with a fixing retaining plug 5(or 6 at zero point with the junction of two y four-way pistons), at quantity tube 1(or 2) in install one can be along quantity tube 1(or 2) axially movable quantitative retaining plug 7(or 8), thereby can limit the piston 3(or 4 that moves about) can only be at retaining plug 5(or 6 at zero point) and quantitative retaining plug 7(or 8) between move trip plug 3(or 4) stroke equal retaining plug 5(or 6 at zero point) to quantitative retaining plug 7(or 8) and distance deduct again to swim fill in 3(or 4) length.Quantitative retaining plug 7(or 8) should be installed in retaining stopper rod 9(or 10) the top, retaining stopper rod 9(or 10) the other end should lean out quantity tube 1(or 2) outer and with vernier bar 17(or 18) an end be fixed together, (two bars are not parallel, can demarcate equally), and at vernier bar 17(or 18) on vernier 15(or 16 is installed).Owing to will quantitatively keep off plug 7(or 8), retaining stopper rod 9(or 10), vernier bar 17(or 18), vernier 15(or 16) fuse quantitative retaining plug 7(or 8) and vernier 15(or 16) same moved further.Therefore can be by adjusting vernier 15(or 16) at scale 13(or 14) on corresponding scale determine quantitatively retaining plug 7(or 8) at quantity tube 1(or 2) and in the position, to reach the liquid volume that demarcation passes in and out quantity tube.
The two y four-way pistons that adopt on this device are made up of piston core 21 and piston bush 22.Join connection for coaxial grinding is close between piston core 21 and the piston bush 22, piston core 21 can be done circumferentially to rotate along mandrel in piston bush 22.Two y type passages that pass axis are arranged on piston core 21, because two y type passages are relatively corresponding to axis, therefore form the perforate of two groups of corresponding axial array on the side face of piston core 21, every group of perforate all is three, and its arrangement is equidistant.Four connection opening are arranged on piston bush 22, wherein three openings be axial array and can with two groups of perforates on the piston core 21 in arbitrary group corresponding.Another connection opening is positioned on the position, opposite of this group middle port.Four connectors on the piston bush 22 can be respectively be connected with two quantity tubes and feed tube, volumetric pipette, wherein two openings in two in three of axial array openings should link to each other with quantity tube 1 or 2, and middle opening and opening opposing thereof can be connected with volumetric pipette with feed tube respectively.Thereby can guarantee that quantity tube 2 just can be connected with volumetric pipette 23 by another y type passage when rotary-piston core 21 makes quantity tube 1 be connected with feed tube 25 by a y type passage; When piston core 21 rotated to an angle (as 180 °) again, quantity tube 1 just was connected with volumetric pipette 23 by y type passage, and quantity tube 2 is connected with feed tube 25 by y type passage.
The present invention adopts pressure as the power piston 3(or 4 that promotes to move about) at quantity tube 1(or 2) in move.Pressure source 19 is by tracheae 20 and quantity tube 1(or 2) be communicated with, tracheae 20 should be connected quantity tube 1(or 2) insert and keep off stopper rod 9(or 10) end, in order not make gas from quantity tube 1(or 2) the retaining stopper rod 9(or 10 that inserts) spill, should be at quantity tube 1(or 2) the top sealing shroud 11(or 12 is installed), sealing cover 11(or 12) going up the center, top has a sealing outlet can guarantee to keep off stopper rod 9(or 10) twitch and do not leak pressure back and forth, tracheae 20 also should be connected in sealing shroud 11(or 12) on.Pressure source 28 links to each other with pipet gun by tracheae 30, communicates with liquid bottle 26 by tracheae 32.Be the piston 3(or 4 that moves about under the effect of the source that keep-ups pressure 19 and 28 during work) at quantity tube 1(or 2) in the speed that moves around equate, answer the static pressure in controlled pressure source 28 to be about the twice of pressure source 19 static pressures.In the work, the pressure source 19 general no pressure losses can select for use pressure ball etc. to have the pressure source of constant pressure; And the pressure loss of pressure source 28 is very fast, can select high capacity pressure ball, forcing pump etc. for use.
The pipet gun of this device is made up of volumetric pipette 23, spring clamp 29, tracheae 30, pipet gun plug 31.An elastic ball bubble 24 also should be installed in the centre of volumetric pipette 23.When in the volumetric pipette 23 during full of liquid, take the photograph elastic ball bubble 24 and can make in the volumetric pipette 23 liquid discharge a little, and suck one section gas at the mouth of pipe.When this device be used for liquid divide timing can with this elastic ball bubble with and under part volumetric pipette and pipet gun take off.
The internal diameter of volumetric pipette 23 and length should be determined with the capacity of the pipe of low capacity in quantity tube 1 and 2.For make work the time be pressed into volumetric pipette 23 treat dilution or wait to move liquid do not enter quantity tube, generally select the peaking capacity of the liquid capacity of volumetric pipette 23 greater than the low capacity quantity tube.
The quantity tube that this device is selected for use, two y four-way piston, the piston that moves about, zero point retaining plug, interface etc. can adopting quartz glass, the manufacturing of macromolecule engineering plastics, the hard material of also available not flexible type is made.
Below respectively to this device carry out liquid dilution, inhale operation and the principle of work move and to distribute and be illustrated:
One, the dilution of liquid
The vernier 15 and 16 of adjusting quantity tube 1 and 2 is respectively V at scale 13 and 14
1Milliliter and V
2Milliliter.Make V
2/ V
1=n(n 〉=2) extension rate is opened two y four-way pistons, and quantity tube 1 is communicated with volumetric pipette 23, should be full of thinning agent in the volumetric pipette 23, and quantity tube 2 communicates with feed tube 25.At this moment, under the effect of pressure source 19, the piston 3 that moves about is forced into zero point shelves and fills in 5 places, because of P
28＞P
19, under the effect of pressure source 28, the thinning agent in the liquid bottle 26 is forced in the quantity tube 2 by feed tube 25, and the piston 4 that moves about moves to quantitative shelves plug 8 places, enters V in the quantity tube 2
2The milliliter thinning agent.
The pipet gun insertion is treated in the dilution bottle 27 and with rifle plug 31 bottleneck of bottle 27 to be sealed, and the unlatching pipet gun presss from both sides 29 makes pressure source 28 communicate with bottle 27, and the dilution for the treatment of in the same bottle 27 is pressed into V in the volumetric pipette 23
1Milliliter, move about piston 3 from zero point retaining plug 5 move on to quantitative retaining and fill in 7 places.At this moment, close spring clamp 29, make pressure source 28 and treat that dilution bottle 27 is obstructed, rotary-piston core 21 about 90 ° be in to attitude, make quantity tube 1 and 2 with volumetric pipette 23 with feed tube 25 each road are neither leads to.Take out pipet gun then and place liquid receptacle 34, again piston core 21 is rotated about 90 ° along former sense of rotation quantity tube 1 is communicated with feed tube 25, quantity tube 2 communicates with volumetric pipette 23.Therefore the mouth of pipe of volumetric pipette 23 is to atmosphere the time, and the pressure of pressure source 19 is greater than 1 atmospheric pressure, shifts to zero point retaining plug 6 places and moves so the piston 4 that moves about under the effect of pressure source 19 fills in 8 from quantitative retaining, and promote to discharge V in the volumetric pipette 23
2Milliliters of liquid is in liquid receptacle 34.Simultaneously, because P
28＞P
19, it is motionless that trip plug 3 withstands on quantitative plug 5 places.
Then pipet gun is placed on the waste liquid device rotary-piston core 21 repositions.Quantity tube 1 discharge opeing and pigging, quantity tube 2 feed liquors.Repeat above step, once more dilution.
Two, the suction of liquid moves
Adjust the reading of vernier 15 and 16 on scale 13 and 14 and be respectively V
1Milliliter and V
2Milliliter, V
2And V
1Be the liquid measure to be moved that volumetric pipette sucks and discharges respectively, constant in order to guarantee to move liquid concentration, the V of discharge
1Ml does not comprise front end diffusion dilution part, should make the V of suction
2Be slightly larger than the V of discharge
1Ml.
Quantity tube 2 is communicated piston core 21 rotations with transfer pipet 23, the volumetric pipette full of liquid, squeeze bulb 24 makes volumetric pipette 23 mouths of pipe discharge small amount of liquid and forms a bit of bubble at the mouth of pipe.Pipet gun is inserted in the imbibition bottle with sucker 27, opens spring clamp 29, at P
28Effect under liquid to be moved be pressed in the volumetric pipette 23 V
2Ml.Bubble plays interval action waiting to move between liquid and the water in the volumetric pipette, below operation with dilute identical.When making quantity tube 1 and 2, rotary-piston core 21 communicates with feed tube 25 and volumetric pipette 23 respectively.At P
28Effect sucks V in the volumetric pipette 23 down
2Milliliter liquid to be moved, 25 inputs of feed tube V
1Ml water.Revolve piston core 21 attitude that mediates.Pipet gun is put into liquid receptacle 34, revolve piston core 21 again, quantity tube 1 and 2 is communicated, respectively with volumetric pipette 23 and feed tube 25 at P
19Effect under, quantity tube 1 is discharged V altogether from 23 mouthfuls of volumetric pipettes
1The milliliter wait move liquid in liquid receptacle 34.Liquid is motionless in the quantity tube 2, and then contrary former sense of rotation rotary-piston core 21 makes quantity tube 1 discharge liquid residual to be moved, bubble and part water in the volumetric pipette 23, clean volumetric pipette 23 by 25 feed liquors, quantity tube 2 in initial state.Move (moving liquid) with this suction of having finished a liquid.Repeat above operation, move liquid once more.
Three, the distribution of liquid
Method (one), if small one and large one quantity tube, size according to the liquid sendout, selecting one of them quantity tube is instrumentation tubes, be the V milliliter quantitatively, another quantity tube is the inoperative pipe, adjusts quantitative shelves plug in the inoperative pipe and the piston that moves about is fixed on keep off zero point the plug place, and promptly to fix on scale label be zero place to vernier.Adjust piston core 21, instrumentation tubes is communicated with, with feed tube 25 at P
28Effect is the instrumentation tubes feed liquor down.Revolve piston core 21 half cycles instrumentation tubes is communicated with volumetric pipette 23, this moment is at P
19Effect is discharged the V milliliter 23 mouthfuls of volumetric pipettes and is divided dosing down.Rotary-piston core 21 half cycles again, instrumentation tubes is feed liquor again.Piston core 21 whenever comes and goes the equivalent distribution that rotation one-period (2 half cycles) is finished a liquid like this.
Method (two), requiring two quantity tubes is identical or close pipe, two Guan Douwei instrumentation tubes all fix on V milliliter place with the vernier of two quantity tubes, make the turnover liquid measure of two quantity tubes identical.Change piston core 21, when quantity tube 1 is communicated with feed tube 25, when quantity tube 2 is communicated with volumetric pipette 23, quantity tube 1 feed liquor, quantity tube 2 discharge opeings.Rotary-piston core 21.During half cycle, then quantity tube 1 discharge opeing, quantity tube 2 feed liquors.Rotary-piston core 21 half cycles again, quantity tube 1 is feed liquor again, quantity tube 2 discharge opeings, piston core whenever comes and goes the rotation one-period like this, finishes the equivalent of twice liquid and distributes.
Dilution, suction that apparatus of the present invention have solved liquid move, and distribute the contradiction in the design between three kinds of functions, make a device with having three kinds of functions.Under the prerequisite of the ratio specification of suitably selecting two quantity tubes, can satisfy the precision dilution of 2～100 times of scopes, 0.5～50ml scope precision is moved liquid.0.5 the accurate needs that the distribute in～100ml scope.The contrast table of the quantity tube of several specification ratios that table 1 is selected for use for this device, but be not only limited to the needs of the quantity tube of specification in the table.This device measuring accuracy reaches the accuracy requirement of chemical macro-analysis, and is simple in structure, easy to maintenance, can be widely used in the liquid volume metering of chemical analysis, biochemistry, medicine and other fields.
Claims (6)
1, a kind ofly is used for liquid diluting, inhales the liquid-volume measurement apparatus move and distribute, it is characterized in that adopting two y four-way pistons that quantity tube 1 and 2 is connected with volumetric pipette 23 and feed tube 25 respectively, in quantity tube 1 (or 2), be provided with the piston 3 (or 4) that moves about.
2, according to the described liquid-volume measurement apparatus of claim 1, it is characterized in that said pair of y four-way piston be made up of piston core 21 and piston bush 22, join connection between piston core 21 and the piston bush 22 for coaxial grinding is close.On piston core 21, there are two to pass axis and corresponding relatively y type passage; Four connection opening are arranged on piston bush 22, wherein have three connection opening to go up uniform and can be corresponding with the perforate that y type passage on the piston core 21 forms for axle.Another opening also can be corresponding with center-aisle perforate on the piston core 21 on the opposite of cover.
3, root is according to the described liquid-volume measurement apparatus of claim 1, it is characterized in that the piston 3(or 4 that moves about) at quantity tube 1(or 2) in stroke equal zero point shelves plug 5(or 6) to quantitative retaining plug 7(or 8) and distance deduct trip plug 3(or 4 again) length poor, zero point retaining plug 5(or 6) be to be fixed on quantity tube 1(or 2) go up by two y four-way piston junctions quantitative retaining plug 7(or 8) be fixed on retaining stopper rod 9(or 10) and the top.
4, according to the described liquid-volume measurement apparatus of claim 3, it is characterized in that keeping off stopper rod 9(or 10) lean out quantity tube 1(or 2) end and vernier bar 17(or 18) and an end be fixed together, at vernier bar, 17(or 18) the other end on be provided with the vernier 15(or 16 of corresponding scale divisions).Quantitatively retaining is filled in 7(or 8) and vernier 15(or 16) same moved further.
5, according to the described liquid-volume measurement apparatus of claim 1, it is characterized in that pressure source 19 is connected with quantity tube 1 and 2 by tracheae 20, pressure source 28 is linked to each other with liquid bottle 26 with pipet gun respectively with 32 by tracheae 30.
6,, it is characterized in that an elastic ball bubble 24 being installed in the centre of volumetric pipette 23 according to the described liquid-volume measurement apparatus of claim 1.Endpiece is installed a pipet gun.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88105305 CN1039302A (en) | 1988-07-11 | 1988-07-11 | Liquid volumeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88105305 CN1039302A (en) | 1988-07-11 | 1988-07-11 | Liquid volumeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1039302A true CN1039302A (en) | 1990-01-31 |
Family
ID=4833513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88105305 Pending CN1039302A (en) | 1988-07-11 | 1988-07-11 | Liquid volumeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1039302A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104344863A (en) * | 2013-07-29 | 2015-02-11 | 株式会社堀场制作所 | Measuring apparatus of liquid and apparatus for analyzing water quality |
| CN105844800A (en) * | 2016-05-25 | 2016-08-10 | 四川长虹技佳精工有限公司 | Effluent metering system and effluent metering method of liquid vending machine |
| CN110562926A (en) * | 2019-09-10 | 2019-12-13 | 南宁绿普环保科技有限责任公司 | portable chlorine dioxide generator |
-
1988
- 1988-07-11 CN CN 88105305 patent/CN1039302A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104344863A (en) * | 2013-07-29 | 2015-02-11 | 株式会社堀场制作所 | Measuring apparatus of liquid and apparatus for analyzing water quality |
| CN105844800A (en) * | 2016-05-25 | 2016-08-10 | 四川长虹技佳精工有限公司 | Effluent metering system and effluent metering method of liquid vending machine |
| CN110562926A (en) * | 2019-09-10 | 2019-12-13 | 南宁绿普环保科技有限责任公司 | portable chlorine dioxide generator |
| CN110562926B (en) * | 2019-09-10 | 2023-08-01 | 南宁绿普环保科技有限责任公司 | Portable chlorine dioxide generator |
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