CN212309622U - Quantitative sampling dropper - Google Patents
Quantitative sampling dropper Download PDFInfo
- Publication number
- CN212309622U CN212309622U CN201922296027.0U CN201922296027U CN212309622U CN 212309622 U CN212309622 U CN 212309622U CN 201922296027 U CN201922296027 U CN 201922296027U CN 212309622 U CN212309622 U CN 212309622U
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- Prior art keywords
- liquid
- straw
- air bag
- gasbag
- reservoir
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- 238000005070 sampling Methods 0.000 title claims abstract description 7
- 239000007788 liquid Substances 0.000 claims abstract description 41
- 239000010902 straw Substances 0.000 abstract description 26
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 abstract description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
The utility model relates to a quantitative sampling dropper, which comprises a straw and an air bag arranged at the top of the straw, wherein the upper end of the straw extends into the air bag, and the space of the air bag below the top of the straw forms a liquid storage tank; the utility model discloses a straw stretches into the inside of gasbag, makes the partial space of gasbag be located the below formation reservoir at straw top, when getting liquid, liquid can be at first full of the straw, then in entering into the reservoir again, makes the liquid level in the gasbag be less than the top of straw when getting liquid, when discharging the liquid in the burette like this again, commands the liquid in the discharge straw, and the liquid in the reservoir can not flow out, has realized the ration liquid feeding.
Description
Technical Field
The utility model relates to a quantitative sampling dropper.
Background
The dropper is a device which is very commonly used in the detection test and is used for sucking or adding a small amount of reagent, sucking the supernatant and separating the precipitate. The prior dropper is simply composed of a sucker and an air bag, and cannot realize the function of quantitative liquid adding.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing a quantitative sampling dropper capable of realizing quantitative liquid feeding.
The utility model adopts the technical proposal that: a quantitative sampling dropper comprises a pipette and an air bag arranged at the top of the pipette, wherein the upper end of the pipette extends into the air bag, and a liquid storage tank is formed in the space, below the top of the pipette, of the air bag.
Further, the volume of the air bag is larger than that of the suction pipe and smaller than the sum of the volumes of the suction pipe and the liquid storage tank.
Further, the reservoir is disposed around the straw.
The utility model discloses an actively the effect does: the utility model discloses a straw stretches into the inside of gasbag, makes the partial space of gasbag be located the below formation reservoir at straw top, when getting liquid, liquid can be at first full of the straw, then in entering into the reservoir again, makes the liquid level in the gasbag be less than the top of straw when getting liquid, when discharging the liquid in the burette like this again, commands the liquid in the discharge straw, and the liquid in the reservoir can not flow out, has realized the ration liquid feeding.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the attached figure, 1-suction tube, 2-air bag and 3-liquid storage tank.
Detailed Description
As shown in the attached figure 1, the utility model comprises a suction pipe 1 and an air bag 2 arranged above the suction pipe 1, wherein the suction pipe 1 adopts the existing structure, such as a sharp-nose glass tube. The upper end of the suction pipe 1 extends into the air bag 2 for a certain distance, so that a liquid storage tank 3 is formed below the suction pipe 1 in the air bag 2, and the sucked liquid firstly fills the suction pipe 1 and then enters the liquid storage tank 3.
The utility model discloses when using, in order to realize quantitative liquid feeding, need to guarantee that the liquid level in the gasbag 2 must not be higher than the top of straw 1, and is more convenient for the use, and the volume of gasbag 2 needs to be greater than the volume of straw 1 and is less than the volume sum of straw 1 and reservoir 3.
The utility model discloses when using, at first pinch the gasbag 2 tightly, catch up the air in the gasbag 2, then go deep into the reagent bottle of getting liquid straw 1, then open the finger, liquid just can enter into in straw 1 and the gasbag 2. When liquid needs to be added, the air bag 2 is pinched again, and then the liquid can be extruded out.
Because the utility model discloses gasbag 2's volume is greater than straw 1's volume to be less than straw 1's volume and reservoir 3's volume sum, consequently, when getting liquid, can guarantee all the time that the liquid level in the gasbag 2 is less than straw 1's top. When adding liquid like this, the extrusion gasbag 2 is located the part of straw 1 top, alright discharge the liquid in the straw 1, and the liquid that is located the reservoir 3 just can remain in the reservoir 3, can not discharged, guarantees that the volume of discharge liquid is the volume of straw 1.
In order to meet more quantitative requirements, the suction tube 1 and the air bag 2 with different sizes and specifications can be equipped to realize quantitative liquid adding work of liquid with different amounts.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention.
Claims (2)
1. A quantitative sampling dropper is characterized by comprising a pipette (1) and an air bag (2) arranged at the top of the pipette (1), wherein the upper end of the pipette (1) extends into the air bag (2), and the air bag (2) is positioned in the space below the top of the pipette (1) to form a liquid storage tank (3);
the volume of the air bag (2) is larger than that of the suction pipe (1) and smaller than the sum of the volumes of the suction pipe (1) and the liquid storage tank (3).
2. A dosing dropper according to claim 1, wherein the reservoir (3) is arranged around the pipette (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922296027.0U CN212309622U (en) | 2019-12-19 | 2019-12-19 | Quantitative sampling dropper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922296027.0U CN212309622U (en) | 2019-12-19 | 2019-12-19 | Quantitative sampling dropper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212309622U true CN212309622U (en) | 2021-01-08 |
Family
ID=74030687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922296027.0U Active CN212309622U (en) | 2019-12-19 | 2019-12-19 | Quantitative sampling dropper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212309622U (en) |
-
2019
- 2019-12-19 CN CN201922296027.0U patent/CN212309622U/en active Active
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |