CN103894250A - Quantitative liquid fetching device and use method thereof - Google Patents
Quantitative liquid fetching device and use method thereof Download PDFInfo
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- CN103894250A CN103894250A CN201410131645.9A CN201410131645A CN103894250A CN 103894250 A CN103894250 A CN 103894250A CN 201410131645 A CN201410131645 A CN 201410131645A CN 103894250 A CN103894250 A CN 103894250A
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Abstract
The invention discloses a quantitative liquid fetching device. The quantitative liquid fetching device comprises a liquid fetching device suction tube, wherein the upper end of the liquid fetching device suction tube is inserted into an overflow liquid vessel, the volume of a tube cavity of the liquid fetching device suction tube is matched with a target fetched liquid volume value, and the overflow liquid vessel is provided with a negative pressure generating device which can enable the interior of the overflow liquid vessel to be in negative pressure, and a pressure relief opening which can enable the negative pressure inside the overflow liquid vessel to disappear. According to a method disclosed by the invention, accurate liquid fetching can be carried out without setting accurate negative pressure, so that the selection of the negative pressure generating device is diverse, and the cost is relatively low. The quantitative liquid fetching device disclosed by the invention is particularly suitable for being applied to soil composition testing experiments. According to the method disclosed by the invention, the accurate liquid fetching can be carried out without setting the accurate negative pressure, so that the selection of the negative pressure generating device is diverse, and the cost is relatively low. The quantitative liquid fetching device has the advantages that the structure is simple, the cost is low, the high-accuracy quantitative liquid fetching is realized in the case that users have no need of observing scales of the liquid fetching device, and the cooperation with an automatic device is facilitated.
Description
Technical field
The present invention relates to the technical field of liquid taking device, especially liquid getting device, specifically, is a kind of quantitative liquid getting device and using method thereof.
Background technology
Liquid getting device be especially in laboratory for the hand-held or fixing dispenser apparatus of dispensing liquid.In soil constituent test experiments, also very frequent of the use of liquid getting device.Soil constituent test experiments is that quantitative soil to be measured is immersed in a certain amount of measurement liquid, leaves standstill a period of time after stirring, and then draws supernatant with liquid getting device, and supernatant is measured.In test, the amount of the supernatant needing is certain, and for example needing the supernatant volume of drawing is 10ml, uses general liquid getting device, need in concrete operations, draw comparatively carefully supernatant to 10ml scale place, and precision is not high.As use high-precision liquid getting device, too expensive.Meanwhile, adopt the liquid getting device of mentioned kind to need user's manual operation, examine the liquid height of absorption, operation is difficult to automation.
Summary of the invention
Technical problem to be solved by this invention is for the above-mentioned state of the art, and provides a kind of simple in structure, cheap and in the situation that not needing user to observe liquid getting device scale, realize high-precision quantitative liquid getting, be convenient to the quantitative liquid getting device and the using method thereof that coordinate with automation equipment.
The present invention solves the problems of the technologies described above adopted technical scheme:
Quantitative liquid getting device, include liquid getting device suction pipe, wherein, liquid getting device suction pipe upper end insert in discharge container and the tube chamber volume of liquid getting device suction pipe and target to get liquid bulking value suitable, discharge container is provided with and can makes the pressure relief opening that produces the negative pressure generating device of negative pressure in discharge container and make negative pressure disappearance in discharge container.
For optimizing technique scheme, the concrete measure of taking also comprises:
Above-mentioned liquid getting device suction pipe and the contact-making surface of discharge container are sealing setting.
Above-mentioned negative pressure generating device is negative pressure gasbag or vacuum generator.
The contact-making surface of above-mentioned negative pressure generating device and discharge container is sealing setting.
The bottom of above-mentioned discharge container is provided with leakage hole.
Above-mentioned pressure relief opening is arranged on the top of discharge container.
A using method for quantitative liquid getting device, comprises the following steps:
After above-mentioned step 4, be also provided with step 5: quantitative liquid getting device is left to target container place, open the leakage hole that is arranged on discharge container bottom, the liquid of being got in discharge container is discharged.
In above-mentioned step 1, liquid getting device suction pipe lower end inserts that to be got the following degree of depth of liquid liquid level be 0.8cm to 1.2cm.
Above-mentioned liquid getting device suction pipe lower end is carved with for observing liquid getting device suction pipe and is inserted the scale of being got liquid level.
Quantitative liquid getting device of the present invention, include liquid getting device suction pipe, wherein, liquid getting device suction pipe upper end insert in discharge container and the tube chamber volume of liquid getting device suction pipe and target to get liquid bulking value suitable, discharge container is provided with and can makes the pressure relief opening that produces the negative pressure generating device of negative pressure in discharge container and make negative pressure disappearance in discharge container.Stable in order to ensure the pressure in discharge container 2, the contact-making surface that needs liquid getting device suction pipe and discharge container is sealing setting.The contact-making surface of negative pressure generating device and discharge container also arranges for sealing, and the liquid level in liquid getting device suction pipe can just not decline before pressure relief opening is opened like this.The present invention gets the suitable liquid getting device suction pipe of liquid bulking value by one with target and realizes high accuracy and get liquid, for example, getting liquid measure is 10ml, on quantitative liquid getting device of the present invention, be equipped with the liquid getting device suction pipe corresponding with 10ml, then by negative pressure generating device, liquid getting device suction pipe is produced to negative pressure, make to be full of and to be got liquid in liquid getting device suction pipe, because liquid getting device suction pipe volume is just in time corresponding with 10ml, therefore, as long as the liquid of being got in liquid getting device suction pipe is transferred to and can be completed a high accuracy in target container and get liquid.What deserves to be explained is, liquid getting device suction pipe volume is corresponding with 10ml does not represent that liquid getting device suction pipe volume is 10ml, because consider that the surface tension of small volume of water solution and liquid getting device suction pipe are from being got the variation in water pressure while extracting out liquid liquid level, liquid getting device suction pipe volume can do some adjustment.Quantitative liquid getting device of the present invention is especially applicable to being applied in soil constituent test experiments because this requirement of experiment to move liquid long-pending substantially fixing, the setting of liquid getting device suction pipe volume is more for convenience.In soil constituent test experiments, whole process is all handwork, there is no automation, and its reason is to get this step of liquid greatly needs people to observe, and this experiment adopts the high equipment of complex precise, price very uneconomical.The present invention gets the fixing feature of liquid measure according to soil constituent test experiments, designs and the liquid getting device suction pipe of getting liquid measure adaptation, and the performance accuracy of getting liquid operation requirements is reduced greatly, makes the automation of soil constituent test experiments become possibility.
This method does not need to arrange negative pressure accurately can carry out accurate liquid extracting, and therefore, the selection of negative pressure generating device is various, and cost is lower.It is simple in structure, cheap and in the situation that not needing user to observe liquid getting device scale, realize high-precision quantitative liquid getting, be convenient to coordinate with automation equipment that the present invention has advantages of.
Brief description of the drawings
Fig. 1 is that quantitative liquid getting device of the present invention inserts the view of being got liquid liquid level;
Fig. 2 is that quantitative liquid getting device of the present invention is drawn the view of being got after liquid;
Fig. 3 is the view that the present invention draws the quantitative liquid getting device of being got after liquid and move to target container place;
Fig. 4 is that pressure relief opening is opened the view that is flowed into target container by getting liquid in liquid getting device suction pipe by the present invention;
Fig. 5 is that the present invention opens the view that quantitative liquid getting device leakage hole is discharged hydrops.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the invention are described in further detail.
Fig. 1 is to Figure 5 shows that structural representation of the present invention.
Reference numeral is wherein: liquid getting device suction pipe 1, discharge container 2, negative pressure generating device 3, pressure relief opening 4, leakage hole 5.
The first embodiment:
As shown in Fig. 1 to 5, quantitative liquid getting device, include liquid getting device suction pipe 1, wherein, liquid getting device suction pipe 1 upper end insert in discharge container 2 and the tube chamber volume of liquid getting device suction pipe 1 and target to get liquid bulking value suitable, discharge container 2 is provided with and can makes the negative pressure generating device 3 of the interior generation negative pressure of discharge container 2 and make the pressure relief opening 4 of the interior negative pressure disappearance of discharge container 2.
It is 10ml that target is got liquid bulking value, and tube chamber volume settings is 10ml.
In embodiment, liquid getting device suction pipe 1 is sealing setting with the contact-making surface of discharge container 2.
In embodiment, negative pressure generating device 3 is sealing setting with the contact-making surface of discharge container 2.
In embodiment, negative pressure generating device 3 is negative pressure gasbag.Use negative pressure gasbag is easy to operate, and cost is low, and the present invention do not need high-precision negative pressure, therefore, selects negative pressure gasbag the most suitable as negative pressure generating device 3.
In embodiment, the bottom of discharge container 2 is provided with leakage hole 5.The position of leakage hole 5 can be in the lower sidewall of discharge container 2, also can be on the diapire of discharge container 2.Being arranged on this two place can make leakage hole 5 effectively complete remaining liquid to topple over.
In embodiment, pressure relief opening 4 is arranged on the top of discharge container 2.Pressure relief opening 4 can be arranged on the side wall upper part of discharge container 2, also can be on the roof of discharge container 2.If discharge container 2 is enough large or negative pressure is less, enter discharge container 2 to be got liquid liquid level low, pressure relief opening 4 can be arranged on the sidewall middle part of discharge container 2, requirement is that liquid level can have pressure relief opening 4.
A using method for quantitative liquid getting device, comprises the following steps:
In embodiment, after step 4, be also provided with step 5: quantitative liquid getting device is left to target container place, open the leakage hole 5 that is arranged on discharge container 2 bottoms, the liquid of being got in discharge container 2 is discharged.
In embodiment, in step 1, liquid getting device suction pipe 1 lower end inserts that to be got the following degree of depth of liquid liquid level be 0.8cm to 1.2cm.
In embodiment, liquid getting device suction pipe 1 lower end is carved with for observing liquid getting device suction pipe 1 and is inserted the scale of being got liquid level.
The second embodiment:
Quantitative liquid getting device, include liquid getting device suction pipe 1, wherein, liquid getting device suction pipe 1 upper end insert in discharge container 2 and the tube chamber volume of liquid getting device suction pipe 1 and target to get liquid bulking value suitable, discharge container 2 is provided with and can makes the negative pressure generating device 3 of the interior generation negative pressure of discharge container 2 and make the pressure relief opening 4 of the interior negative pressure disappearance of discharge container 2.
It is 15ml that target is got liquid bulking value, and tube chamber volume settings is 15.2ml.
In embodiment, negative pressure generating device 3 is vacuum generator.Use vacuum generator can make the present invention and automation equipment be used in combination more easily.
In embodiment, liquid getting device suction pipe 1 is sealing setting with the contact-making surface of discharge container 2.
In embodiment, negative pressure generating device 3 is sealing setting with the contact-making surface of discharge container 2.
In embodiment, the bottom of discharge container 2 is provided with leakage hole 5.
In embodiment, pressure relief opening 4 is arranged on the top of discharge container 2.
The using method of quantitative liquid getting device is with the first embodiment.
The 3rd embodiment:
Quantitative liquid getting device, include liquid getting device suction pipe 1, wherein, liquid getting device suction pipe 1 upper end insert in discharge container 2 and the tube chamber volume of liquid getting device suction pipe 1 and target to get liquid bulking value suitable, discharge container 2 is provided with and can makes the negative pressure generating device 3 of the interior generation negative pressure of discharge container 2 and make the pressure relief opening 4 of the interior negative pressure disappearance of discharge container 2.
It is 5ml that target is got liquid bulking value, and tube chamber volume settings is 4.9ml.
In embodiment, negative pressure generating device 3 is negative pressure gasbag.
In embodiment, liquid getting device suction pipe 1 is sealing setting with the contact-making surface of discharge container 2.
In embodiment, negative pressure generating device 3 is sealing setting with the contact-making surface of discharge container 2.
In embodiment, the bottom of discharge container 2 is provided with leakage hole 5.
In embodiment, pressure relief opening 4 is arranged on the top of discharge container 2.
The using method of quantitative liquid getting device is with the first embodiment.
Finally explanation is, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although by with reference to the preferred embodiments of the present invention, invention has been described, but those of ordinary skill in the art is to be understood that, can make various changes to it in the form and details, and not depart from the spirit and scope of the present invention that appended claims limits.
Claims (10)
1. quantitative liquid getting device, include liquid getting device suction pipe (1), it is characterized in that: described liquid getting device suction pipe (1) upper end insert in discharge container (2) and the tube chamber volume of described liquid getting device suction pipe (1) and target to get liquid bulking value suitable, described discharge container (2) is provided with and can makes the pressure relief opening (4) that produces the negative pressure generating device (3) of negative pressure in discharge container (2) and make the interior negative pressure disappearance of discharge container (2).
2. quantitative liquid getting device according to claim 1, is characterized in that: described liquid getting device suction pipe (1) is sealing setting with the contact-making surface of discharge container (2).
3. quantitative liquid getting device according to claim 1, is characterized in that: described negative pressure generating device (3) is negative pressure gasbag or vacuum generator.
4. quantitative liquid getting device according to claim 1, is characterized in that: described negative pressure generating device (3) is sealing setting with the contact-making surface of discharge container (2).
5. according to the quantitative liquid getting device described in the arbitrary claim of claim 1 to 4, it is characterized in that: the bottom of described discharge container (2) is provided with leakage hole (5).
6. according to the quantitative liquid getting device described in the arbitrary claim of claim 1 to 4, it is characterized in that: described pressure relief opening (4) is arranged on the top of discharge container (2).
7. a using method for quantitative liquid getting device as claimed in claim 1, is characterized in that: comprise the following steps:
Step 1, the pressure relief opening of quantitative liquid getting device (4) is kept closed, and liquid getting device suction pipe (1) lower end is inserted got below liquid liquid level;
Step 2, make to produce negative pressure in discharge container (2) by negative pressure generating device (3), this negative pressure makes to be got liquid and flows in liquid getting device suction pipe (1);
Step 3, quilt are got liquid and are full of after liquid getting device suction pipe (1), continue to flow in discharge container (2), along with being got the inflow of liquid, negative pressure in discharge container (2) reduces gradually, until no longer flowed in discharge container (2) by being got liquid, now got that liquid is still full of liquid getting device suction pipe (1) and liquid getting device suction pipe (1) upper end is not had by the immersion of being got in discharge container (2);
Step 4, quantitative liquid getting device is moved to target container, and make liquid getting device suction pipe (1) lower end aligned target container, open pressure relief opening (4), negative pressure in discharge container (2) is disappeared, and the liquid of being got in liquid getting device suction pipe (1) flows in target container.
8. the using method of quantitative liquid getting device according to claim 7, it is characterized in that: after described step 4, be also provided with step 5: quantitative liquid getting device is left to target container place, open the leakage hole (5) that is arranged on discharge container (2) bottom, the liquid of being got in discharge container (2) is discharged.
9. the using method of quantitative liquid getting device according to claim 7, is characterized in that: in step 1, liquid getting device suction pipe (1) lower end inserts that to be got the following degree of depth of liquid liquid level be 0.8cm to 1.2cm.
10. the using method of quantitative liquid getting device according to claim 9, is characterized in that: described liquid getting device suction pipe (1) lower end is carved with for observing liquid getting device suction pipe (1) and is inserted the scale of being got liquid level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410131645.9A CN103894250B (en) | 2014-04-03 | 2014-04-03 | Quantitative liquid getting device and using method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410131645.9A CN103894250B (en) | 2014-04-03 | 2014-04-03 | Quantitative liquid getting device and using method thereof |
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| CN103894250A true CN103894250A (en) | 2014-07-02 |
| CN103894250B CN103894250B (en) | 2016-04-27 |
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| CN201410131645.9A Expired - Fee Related CN103894250B (en) | 2014-04-03 | 2014-04-03 | Quantitative liquid getting device and using method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104826679A (en) * | 2014-11-09 | 2015-08-12 | 韦伟 | Pipette tip and pipette therewith |
| CN105498877A (en) * | 2014-12-23 | 2016-04-20 | 马荣华 | Quantitative pipet |
| CN106040329A (en) * | 2016-07-29 | 2016-10-26 | 章亦文 | Simple quantitative pipettor |
| CN106423324A (en) * | 2016-09-28 | 2017-02-22 | 长春迪瑞医疗科技股份有限公司 | Fluid transfer device and fluid transfer method |
| CN112842336A (en) * | 2021-01-12 | 2021-05-28 | 王盛 | Blood collection bottle for blood collection in immune cell therapy |
| CN114534817A (en) * | 2022-03-24 | 2022-05-27 | 江苏科华医疗器械科技有限公司 | Movable assembly type liquid-transferring suction mechanism |
| CN114632565A (en) * | 2022-03-24 | 2022-06-17 | 江苏科华医疗器械科技有限公司 | Openable drainage type liquid collecting device |
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| CN202290072U (en) * | 2011-09-05 | 2012-07-04 | 贺小华 | High-precision liquid adding and detection device |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104826679A (en) * | 2014-11-09 | 2015-08-12 | 韦伟 | Pipette tip and pipette therewith |
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| CN112842336A (en) * | 2021-01-12 | 2021-05-28 | 王盛 | Blood collection bottle for blood collection in immune cell therapy |
| CN114534817A (en) * | 2022-03-24 | 2022-05-27 | 江苏科华医疗器械科技有限公司 | Movable assembly type liquid-transferring suction mechanism |
| CN114632565A (en) * | 2022-03-24 | 2022-06-17 | 江苏科华医疗器械科技有限公司 | Openable drainage type liquid collecting device |
| CN114632565B (en) * | 2022-03-24 | 2023-09-29 | 江苏科华医疗器械科技有限公司 | Openable liquid drainage type liquid sampling device |
| CN114534817B (en) * | 2022-03-24 | 2024-01-12 | 江苏科华医疗器械科技有限公司 | Movable assembly type pipetting suction mechanism |
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| CN103894250B (en) | 2016-04-27 |
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