CN103267551B - Variable volume accurate measuring device - Google Patents
Variable volume accurate measuring device Download PDFInfo
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- CN103267551B CN103267551B CN201310173719.0A CN201310173719A CN103267551B CN 103267551 B CN103267551 B CN 103267551B CN 201310173719 A CN201310173719 A CN 201310173719A CN 103267551 B CN103267551 B CN 103267551B
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Abstract
The invention discloses a kind of variable volume accurate measuring device, this device comprises jigger, constant volume tube, valving, connecting pipe and positive and negatively two turns liquor pump.Jigger top is provided with inlet, and bottom is provided with liquid outlet; Constant volume tube is inserted in jigger; The upper end of connecting pipe is communicated with the valve passage of valving, and lower end is communicated with the top of described constant volume tube; Positive and negative two liquid feeding end turning liquor pump is connected with feed tube, and outlet end is connected with described valving.When using of the present invention, extract positive and negative two liquor pump inverted running that turns out cover constant volume tube bottom liquid to be batched, once the liquid level in jigger is separated with the mouth of pipe place of constant volume tube bottom, liquid in jigger cannot be drawn out of and can only remain in jigger, namely completes the metering to required volume liquid.The constant volume tube choosing diverse location just can realize the accurate measurement to different volumes liquid.Structure of the present invention is simple, accurate measurement, and reproducible.
Description
Technical field
The present invention relates to measuring apparatus, refer to a kind of variable volume accurate measuring device particularly, for needing metering or the equal proportion sampling of precise volume setting, the simultaneously occasion of adjustable metered volume or ratio again.
Background technology
For the fluid metering of various instrumentation devices, classic method adopts peristaltic pump as the metering outfit of feed liquor, this mode is simple, direct, but the precision of peristaltic pump own affects by multiple condition, particularly after long-term operation, due to the wear and aging of pump line, cause metering that relatively large deviation occurs.
In order to overcome the defect that peristaltic pump exists in metering, market is proposed ram pump again, although this pump comparatively peristaltic pump accurate measurement, but running speed is slow, consuming time, expensive, and cost is higher, inapplicable for larger capacity constant volume, be unfavorable for that large-scale popularization adopts.
In addition, the liquid of conveying as required that above-mentioned two kinds of pumps can only be simple is adopted, and the metering using the apparatus for metering fluids of these two kinds of pumps cannot simultaneously realize different volume liquid, therefore its applicable surface is little, can not meet the demand of experiment and actual production.
So a kind of quick metering of research invention, accurately and reliably, convenient and practical, the with low cost and measuring apparatus that can meet different volumes metering requirements is necessary simultaneously.
Summary of the invention
The object of the invention is to overcome above-mentioned the deficiencies in the prior art and a kind of variable volume accurate measuring device is provided, this apparatus structure is simple, the metering to required volume can be completed quickly and accurately, can also according to the demand of different metered volume, complete not isometric metering, improve the efficiency of metering.
For realizing the invention described above object, the invention provides a kind of variable volume accurate measuring device, this device comprises:
Jigger, top is provided with inlet, and bottom is provided with liquid outlet;
Constant volume tube, is inserted in described inlet;
Valving;
Connecting pipe, its upper end is communicated with described valving, and lower end is communicated with the top of described constant volume tube;
Positive and negative pair turns liquor pump, and its one end is connected with feed tube, and the other end is connected with described valving;
Discharging tube, is connected with the liquid outlet of described jigger bottom; And
Tapping valve, is located on described discharging tube.
Further, in technique scheme,
Described inlet is multiple;
Described valving is provided with multiple passage;
Described constant volume tube is also multiple, and each constant volume tube length is different, and the top of each constant volume tube is all by each expanding channels in a connecting pipe and described valve transposition.
Further, in technique scheme,
Described jigger upper end has air hole.
The course of work of the present invention is as follows:
1) according to required metered volume select the constant volume tube of corresponding volume;
2) positive and negative pair turns liquor pump first forward operation, is drawn into liquid to be batched, until the liquid to be batched be pumped in jigger covers described constant volume tube bottom by constant volume tube in jigger; Positive and negative pair turns liquor pump then inverted running, extracts liquid to be batched by constant volume tube out in jigger, until the liquid to be batched covering described constant volume tube bottom is drawn out of, now remaining in jigger liquid to be batched is the metering liquid of required volume.
The present invention has the following advantages:
1) structure is simple, easy to use, only need control positive and negative two operation turning liquor pump, can realize the accurate-metering of required volume.Because in use, positive and negative two liquor pump inverted running that turns extracts the liquid to be batched covering constant volume tube bottom out, once the liquid level in jigger is separated with the mouth of pipe place of constant volume tube bottom, liquid in jigger cannot be drawn out of and can only remain in jigger, and the liquid retained in jigger is the liquid of required volume.
2) the present invention can select corresponding constant volume tube according to the volume of required metering, not isometric constant volume tube is arranged in the inlet of jigger, because constant volume tube lower ending opening is in position difference residing in jigger, therefore each constant volume tube extend into the degree of depth in jigger and is also not quite similar, namely last positive and negative two turn liquor pump inverted running extracted liquid after, liquid volume remaining in jigger is also different, thus realizes not isometric metering.
Accompanying drawing explanation
Fig. 1 is the structural representation of variable volume accurate measuring device of the present invention;
In figure, 1-feed tube, positive and negative couple of 2-turns liquor pump, 3-valving, 4-jigger, 5-tapping valve, 6-first constant volume tube, 7-second constant volume tube, 8-the 3rd constant volume tube, 9-first connecting pipe, 10-second connecting pipe, 11-the 3rd connecting pipe, 12-air hole, 13-pipe adapter, 14-discharging tube.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
As shown in Figure 1, variable volume accurate measuring device of the present invention comprises jigger 4, and the top of jigger 4 has multiple inlet, and each inlet all can insert constant volume tube.The present embodiment is described to have three inlets, and be separately installed with the first variant constant volume tube 6, second constant volume tube 7 of three length and the 3rd constant volume tube 8 in three inlets, the bottom of each constant volume tube extend in jigger 4.The bottom of jigger 4 is by pipe adapter 13 connected drainage pipe 14, and discharging tube 14 is provided with tapping valve 5.In order to maintain the air pressure balance in jigger 4, jigger 4 top also offers air hole 12.
Variable volume accurate measuring device of the present invention also comprises valving 3, and this valving 3 is for having multichannel valving, and the present embodiment is described for the valving with three passages.Three passages are communicated with the top of the 3rd constant volume tube 8 with the first constant volume tube 6, second constant volume tube 7 with the 3rd connecting pipe 11 respectively by the first connecting pipe 9, second connecting pipe 10.Because the top of the first constant volume tube 6, second constant volume tube 7 and the 3rd constant volume tube 8 is in same level, and the bottom of three constant volume tubes is in different level, thus, when the constant volume tube bottom place plane of liquid level respectively to three in jigger 4, it can constant volume volume be different.
Valving 3 is connected with positive and negative pair and turns liquor pump 2, and positive and negative two one end turning liquor pump 2 connects feed tube 1, extracts feed liquor source by feed tube 1.Positive and negative two other end turning liquor pump 2 is connected with valving 3, and positive and negative pair turns liquor pump 2 and export the liquid of extraction to valving 3.
Use the present invention can the liquid of volume needed for accurate-metering, such as: the first constant volume tube 6 is installed in an inlet on jigger 4 top, the first constant volume tube 6 be by the expanding channels of the first connecting pipe 9 with valving 3.Opening positive and negative two liquor pump 2 forward that turns to run, the liquid of extraction being input in jigger 4 by the first constant volume tube 6, until cover the first constant volume tube 6 bottom, as covered the first constant volume tube 6 bottom 5mm.Then start positive and negative pair and turn liquor pump 2 inverted running, extract the liquid in jigger 4, after the liquid covering the first constant volume tube 6 bottom is drawn out of, when liquid level in first constant volume tube 6 bottom and jigger 4 maintains an equal level, liquid in jigger 4 cannot be drawn out of again, and now in jigger 4, remaining liquid is the liquid of required volume.Open tapping valve 5, the liquid in jigger 4 is discharged by discharging tube 14, namely obtains the liquid of required metered volume.In practical operation, the position calculation that the size of required metered volume can extend in jigger 4 according to the volume of jigger 4 and the first constant volume tube 6 bottom draws.
Because the volume of jigger 4 is fixed, the first constant volume tube 6 length is fixed, and due to the invariant position of the first constant volume tube 6 in jigger 4, so each liquid capacity obtained is all identical, has good repeatability.
When needing the liquid obtaining other volume, can select the second constant volume tube 7, because the second constant volume tube 7 is different from the first constant volume tube 6 length, its position stretched in jigger 4 is different from the position that the first constant volume tube 6 extend in jigger 4.After the liquid covering the second constant volume tube 7 bottom is drawn out of, in jigger 4, the volume of remaining liquid is also different from the liquid that use first constant volume tube 6 measures.Thus select different constant volume tubes, can realize not isometric accurate-metering.
Be vulnerable to liquor pump performance with accurate measurement in prior art compare with the restriction of type, the present invention is not by positive and negative two impact turning liquor pump 2 performance and classification, and therefore all can obtain the liquid of correct volume, accuracy rate is high at every turn.The liquid volume using same constant volume device to obtain is identical, has reproducible advantage.
In addition, as a preferred embodiment of the present invention, the present invention can also install the constant volume tube with different length simultaneously in multiple inlets on jigger 4 top, and the present embodiment has different length three constant volume tubes (the first constant volume tube 6, second constant volume tube 7 and the 3rd constant volume tube 8) to install respectively illustrate that use the present invention as required realizes the process of measuring multiple volume of liquid.
First constant volume tube 6, second constant volume tube 7 is different with the position that the 3rd constant volume tube 8 bottom is positioned at jigger 4, thus uses different length constant volume tube by realization to not isometric metering.According to the volume of jigger 4, and the distance bottom three constant volume tube bottom distance measuring cups 4, the volume that three constant volume tubes measure respectively can be calculated.When using of the present invention, according to the volume of required metering, the corresponding constant volume tube of choice for use.
The present invention can the volume of constant volume as required, is installed in jigger 4 by the constant volume tube with different length, thus can realizes not isometric metering.
Claims (3)
1. a variable volume accurate measuring device, is characterized in that, comprising:
Jigger, top is provided with inlet, and bottom is provided with liquid outlet;
Constant volume tube, is inserted in described inlet;
Valving;
Connecting pipe, its upper end is communicated with described valving, and lower end is communicated with the top of described constant volume tube;
Positive and negative pair turns liquor pump, and its one end is connected with feed tube, and the other end is connected with described valving;
Discharging tube, is connected with the liquid outlet of described jigger bottom; And
Tapping valve, is located on described discharging tube.
2. variable volume accurate measuring device according to claim 1, is characterized in that:
Described inlet is multiple;
Described valving is provided with multiple passage;
Described constant volume tube is also multiple, and each constant volume tube length is different, and the top of each constant volume tube is all by each expanding channels in a connecting pipe and described valve transposition.
3. variable volume accurate measuring device according to claim 1 or 2, is characterized in that: described jigger upper end has air hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310173719.0A CN103267551B (en) | 2013-05-10 | 2013-05-10 | Variable volume accurate measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310173719.0A CN103267551B (en) | 2013-05-10 | 2013-05-10 | Variable volume accurate measuring device |
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| Publication Number | Publication Date |
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| CN103267551A CN103267551A (en) | 2013-08-28 |
| CN103267551B true CN103267551B (en) | 2015-09-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310173719.0A Active CN103267551B (en) | 2013-05-10 | 2013-05-10 | Variable volume accurate measuring device |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103743449B (en) * | 2013-11-30 | 2017-03-22 | 成都新基因格生物科技有限公司 | Measuring cylinder with variable capacity |
| TWI512193B (en) * | 2014-01-20 | 2015-12-11 | Syringe meter | |
| CN109044855A (en) * | 2018-08-26 | 2018-12-21 | 陈威 | A kind of care appliances that patient's dirty things are collected |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3599666A (en) * | 1969-04-08 | 1971-08-17 | Ilford Ltd | Measuring device |
| US4284210A (en) * | 1977-12-21 | 1981-08-18 | Vladimir Horak | Static metering pump |
| CN102211000A (en) * | 2011-06-09 | 2011-10-12 | 无锡国赢科技有限公司 | Quantifying liquid-discharging structure with middle exhaust pipe |
| CN202257294U (en) * | 2011-10-10 | 2012-05-30 | 北京华阳利民仪器有限公司 | Liquid volume controlling device |
| CN102692257A (en) * | 2012-06-08 | 2012-09-26 | 吉林市光大分析技术有限责任公司 | Pneumatic liquid quantifying method and device thereof |
-
2013
- 2013-05-10 CN CN201310173719.0A patent/CN103267551B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3599666A (en) * | 1969-04-08 | 1971-08-17 | Ilford Ltd | Measuring device |
| US4284210A (en) * | 1977-12-21 | 1981-08-18 | Vladimir Horak | Static metering pump |
| CN102211000A (en) * | 2011-06-09 | 2011-10-12 | 无锡国赢科技有限公司 | Quantifying liquid-discharging structure with middle exhaust pipe |
| CN202257294U (en) * | 2011-10-10 | 2012-05-30 | 北京华阳利民仪器有限公司 | Liquid volume controlling device |
| CN102692257A (en) * | 2012-06-08 | 2012-09-26 | 吉林市光大分析技术有限责任公司 | Pneumatic liquid quantifying method and device thereof |
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| CN103267551A (en) | 2013-08-28 |
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