CN214716755U - Pipette with backflow prevention function - Google Patents
Pipette with backflow prevention function Download PDFInfo
- Publication number
- CN214716755U CN214716755U CN202120480537.8U CN202120480537U CN214716755U CN 214716755 U CN214716755 U CN 214716755U CN 202120480537 U CN202120480537 U CN 202120480537U CN 214716755 U CN214716755 U CN 214716755U
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- base body
- piston
- liquid
- nested
- pipette
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- 230000002265 prevention Effects 0.000 title claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 85
- 238000005213 imbibition Methods 0.000 claims abstract 4
- 230000007797 corrosion Effects 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 7
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 239000003153 chemical reaction reagent Substances 0.000 description 10
- 238000010521 absorption reaction Methods 0.000 description 6
- 239000002904 solvent Substances 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- Devices For Use In Laboratory Experiments (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model discloses a pipette with backflow prevention function, including base member, imbibition mouth and liquid outlet, the bottom of base member is provided with the imbibition mouth, and the top of base member is provided with the liquid outlet to first activity chamber is installed to the lower extreme of base member, and first piston is installed through first push rod to the inside in first activity chamber simultaneously, and first nested piece is installed to the inner wall of the base member that first piston corresponds moreover, the inside nestification of base member has the honeycomb duct, and the output of honeycomb duct is connected in the inside in collection liquid chamber to collect the liquid chamber and install the right side at the base member, the surface in collection liquid chamber is provided with the scale mark simultaneously. This pipette with anti-return function, the inside of collecting chamber is drained with liquid through the nested honeycomb duct of base member, drives the nested seal structure who nests inside formation imbibition mouth of first nested piece of first piston through first push rod simultaneously, inverts the base member, drives the inside of third piston slip to second activity chamber through the third push rod, with inside the liquid discharge base member.
Description
Technical Field
The utility model relates to a reagent sample technical field specifically is a pipette with anti-return function.
Background
A kind of pipette can be used in the chemical liquid reagent detection sampling process, the conventional pipette sucks the air outlet of the pipette through the ear-sucking ball, and the purpose of sucking the solvent sample is achieved by making negative pressure, but the pipette has certain disadvantages in the using process, such as:
1. the existing pipette absorbs liquid through the suction ear ball, the suction ear ball is easy to damage after long-time use, solvent samples are easy to flow back, sampling is not smooth, or the liquid is sprinkled on the ground to pollute the environment;
2. the amount of the reagent adsorbed by the existing pipette is not controlled when the existing pipette is used, and the detection result of the reagent is influenced.
Therefore, a pipette with a backflow prevention function is provided, so as to solve the problems that the existing pipette proposed in the above description adsorbs liquid through an ear absorption ball, the ear absorption ball is easily damaged after long-time use, a solvent sample easily flows back, sampling is not smooth, or the liquid is sprinkled on the ground to pollute the environment, and the amount of adsorbed reagent is not controlled during use, so that the reagent detection result is influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a pipette with backflow prevention function to solve the pipette on the existing market that above-mentioned background art provided and pass through the auricle ball with liquid sorption, use the auricle ball easy damaged for a long time, cause solvent sample backward flow very easily, the sample is not smooth, perhaps spills the polluted environment on the ground, and the volume of absorbent reagent when using is uncontrolled, influences reagent testing result's problem.
In order to achieve the above object, the utility model provides a following technical scheme: a pipette with an anti-backflow function comprises a base body, a liquid suction port and a liquid outlet, wherein the liquid suction port is formed in the bottom of the base body, the liquid outlet is formed in the top of the base body, a first movable cavity is installed at the lower end of the base body, a first piston is installed in the first movable cavity through a first push rod, a first nested block is installed on the inner wall of the base body corresponding to the first piston, a guide pipe is nested in the base body, the output end of the guide pipe is connected to the inside of the liquid collecting cavity, the liquid collecting cavity is installed on the right side of the base body, meanwhile, a scale mark is arranged on the outer surface of the liquid collecting cavity, a connecting pipe is installed at the upper end of the base body, a negative pressure device is installed at the output end of the connecting pipe, a through hole plate is installed in the connecting pipe, a second piston is nested in the bottom of the connecting pipe through a second push rod installed in the first movable cavity, a third piston is installed at the upper end of the base body through a third push rod nested in the second movable cavity, and the output end of the third piston is nested inside the third nesting block, and the third nesting block is arranged on the inner wall of the base body.
Preferably, the inner diameter of the liquid suction port arranged on the base body is equal to that of the liquid outlet, the base body forms a communicating structure with the liquid outlet through the liquid suction port, and the base body is made of transparent corrosion-resistant glass.
Preferably, the lower end of the base body is provided with a first piston through a first movable cavity to form a sliding connection structure between the first piston and the first movable cavity, and the outer diameter of the first piston is smaller than the inner diameter of the first nesting block.
Preferably, the liquid collecting cavity nested in the base body forms a feeding structure of the liquid collecting cavity through the flow guide pipe, and the inner diameter of the liquid collecting cavity is larger than the outer diameter of the base body.
Preferably, the connecting pipe arranged at the upper end of the base body forms a communicating structure between the negative pressure device and the base body, and the through hole plate arranged in the connecting pipe forms an opening and closing structure between the base body and the negative pressure device through a second piston arranged on a second push rod.
Preferably, a third piston arranged in the second movable cavity is nested in the third nesting block through a third push rod to form an opening and closing structure at the top of the base body, and the outer diameter of the third piston is smaller than the inner diameter of the base body.
Compared with the prior art, the beneficial effects of the utility model are that: the pipette with the backflow prevention function;
1. the liquid level measuring device is provided with a first piston, a flow guide pipe, a liquid collecting cavity and scale marks, a base body drives the first piston to move through a first push rod which is embedded in a first movable cavity arranged at the lower end of the base body, the first movable cavity is pulled back through the first piston to form a communicating structure of the flow guide pipe, the upper end of the base body is opened through a negative pressure device arranged on a connecting pipe to form negative pressure inside the base body, the base body is connected to the upper end of the liquid collecting cavity through the output end of the flow guide pipe to guide liquid into the liquid collecting cavity, the scale marks arranged on the outer surface of the liquid collecting cavity control the amount of the liquid, and the first piston is embedded in a first embedded block under the action of the first push rod to prevent the backflow of the liquid and increase the accuracy of an experimental reagent;
2. the liquid guiding device is provided with a third push rod, a third piston and a third nested block, the upper end of the base body is driven to be nested in the third nested block through the third push rod nested in the second movable cavity, the bottom of the connecting pipe is pushed to the inside of the connecting pipe through the second push rod installed in the first movable cavity, liquid is prevented from being guided to the inside of the connecting pipe, the base body is inverted, the first piston is pulled to the inside of the first movable cavity to form a communicating structure of a liquid suction port and a liquid outlet, and the liquid can be conveniently moved out.
Drawings
FIG. 1 is a schematic view of the main sectional structure of the present invention;
fig. 2 is a schematic top view of the base, the third push rod and the third piston of the present invention;
FIG. 3 is an enlarged schematic view of A of FIG. 1 according to the present invention;
fig. 4 is an enlarged schematic structural diagram of B in fig. 1 according to the present invention.
In the figure: 1. a substrate; 2. a liquid suction port; 3. a liquid outlet; 4. a first movable chamber; 5. a first push rod; 6. a first piston; 7. a first nesting block; 8. a flow guide pipe; 9. a liquid collection cavity; 10. scale marking; 11. a connecting pipe; 12. a negative pressure device; 13. a through hole plate; 14. a second push rod; 15. a second piston; 16. a second movable chamber; 17. a third push rod; 18. a third piston; 19. and a third nested block.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution: a pipette with a backflow prevention function comprises a base body 1, a liquid suction port 2, a liquid outlet 3, a first movable cavity 4, a first push rod 5, a first piston 6, a first nested block 7, a flow guide pipe 8, a liquid collection cavity 9, a scale mark 10, a connecting pipe 11, a negative pressure device 12, a through hole plate 13, a second push rod 14, a second piston 15, a second movable cavity 16, a third push rod 17, a third piston 18 and a third nested block 19, wherein the bottom of the base body 1 is provided with the liquid suction port 2, the top of the base body 1 is provided with the liquid outlet 3, the lower end of the base body 1 is provided with the first movable cavity 4, the first piston 6 is arranged in the first movable cavity 4 through the first push rod 5, the first nested block 7 is arranged on the inner wall of the base body 1 corresponding to the first piston 6, the flow guide pipe 8 is nested in the base body 1, and the output end of the flow guide pipe 8 is connected to the inside of the liquid collection cavity 9, and the collection liquid chamber 9 is installed on the right side of base member 1, simultaneously the surface of collection liquid chamber 9 is provided with scale mark 10, connecting pipe 11 is installed to the upper end of base member 1, and negative pressure device 12 is installed to the output of connecting pipe 11, and the internally mounted of connecting pipe 11 has through-hole board 13, the second push rod 14 that the bottom of connecting pipe 11 was installed through first activity chamber 4 has nested second piston 15 simultaneously, third piston 18 is installed through the nested third push rod 17 in second activity chamber 16 in the upper end of base member 1, and the output of third piston 18 is nested in the inside of third nested piece 19, and third nested piece 19 is installed at the inner wall of base member 1.
The liquid absorption mouth 2 that base member 1 set up equals with the internal diameter of liquid outlet 3, and base member 1 forms the intercommunication structure through liquid absorption mouth 2 and liquid outlet 3 to base member 1 is transparent corrosion-resistant glass material, the absorption and the releasing of the liquid of being convenient for.
The first piston 6 that the lower extreme of base member 1 installed through first activity chamber 4 forms first piston 6 and the sliding connection structure of first activity chamber 4, and the external diameter of first piston 6 is less than the internal diameter of first nested piece 7, is convenient for prevent the refluence after the absorption.
The liquid collecting cavity 9 nested in the base body 1 forms a feeding structure of the liquid collecting cavity 9 through the flow guide pipe 8, and the inner diameter of the liquid collecting cavity 9 is larger than the outer diameter of the base body 1, so that liquid can be conveniently stored.
The connecting pipe 11 arranged at the upper end of the base body 1 forms a communicating structure of the negative pressure device 12 and the base body 1, and the through hole plate 13 arranged in the connecting pipe 11 forms an opening and closing structure of the base body 1 and the negative pressure device 12 through the second piston 15 arranged by the second push rod 14, so that the liquid can be conveniently discharged.
A third piston 18 arranged in the second movable cavity 16 is nested in a third nesting block 19 through a third push rod 17 to form an opening and closing structure at the top of the base body 1, and the outer diameter of the third piston 18 is smaller than the inner diameter of the base body 1, so that liquid can be conveniently sucked.
The working principle is as follows: when the pipette with the backflow prevention function is used, according to the figures 1-4, firstly, the device is placed at a required position, the base body 1 drives the first piston 6 to move through the first push rod 5 nested in the first movable cavity 4 arranged at the lower end, the first movable cavity 4 is pulled back through the first piston 6 to form a communication structure of the flow guide pipe 8, the upper end of the base body 1 is opened through the negative pressure device 12 arranged on the connecting pipe 11 to form negative pressure inside the base body 1, the negative pressure is connected to the upper end of the liquid collection cavity 9 through the output end of the flow guide pipe 8, liquid is guided into the liquid collection cavity 9, the scale 10 arranged on the outer surface of the liquid collection cavity 9 is used for controlling the amount of the liquid, meanwhile, the first piston 6 is nested in the first nested block 7 under the action of the first push rod 5, backflow of the liquid is prevented, and the accuracy of an experiment reagent is improved;
according to the figures 1-4, the third push rod 17, which is nested in the second movable cavity 16, at the upper end of the base 1 drives the third piston 18 to be nested in the third nesting block 19, the second push rod 14, which is mounted in the first movable cavity 4, at the bottom of the connecting pipe 11 pushes the second piston 15 to the inside of the connecting pipe 11, so that the liquid is prevented from being guided to the inside of the connecting pipe 11, the base 1 is inverted, and the first piston 6 is pulled to the inside of the first movable cavity 4 to form a communicating structure of the liquid suction port 2 and the liquid outlet 3, thereby facilitating the moving out of the liquid.
To thereby carry out a series of tasks, the contents of which are not described in detail in the present specification are prior art well known to those skilled in the art.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (6)
1. The utility model provides a pipette with anti-return function, includes base member (1), imbibition mouth (2) and liquid outlet (3), its characterized in that: the bottom of the base body (1) is provided with a liquid suction port (2), the top of the base body (1) is provided with a liquid outlet (3), the lower end of the base body (1) is provided with a first movable cavity (4), a first piston (6) is arranged in the first movable cavity (4) through a first push rod (5), a first nesting block (7) is arranged on the inner wall of the base body (1) corresponding to the first piston (6), a guide pipe (8) is nested in the base body (1), the output end of the guide pipe (8) is connected to the inside of the liquid collecting cavity (9), the liquid collecting cavity (9) is arranged on the right side of the base body (1), the outer surface of the liquid collecting cavity (9) is provided with scale marks (10), the upper end of the base body (1) is provided with a connecting pipe (11), the output end of the connecting pipe (11) is provided with a negative pressure device (12), and the inside of the connecting pipe (11) is provided with a through hole plate (13), meanwhile, a second piston (15) is nested on a second push rod (14) installed at the bottom of the connecting pipe (11) through the first movable cavity (4), a third piston (18) is installed at the upper end of the base body (1) through a third push rod (17) nested in the second movable cavity (16), the output end of the third piston (18) is nested in a third nesting block (19), and the third nesting block (19) is installed on the inner wall of the base body (1).
2. A pipette with backflow prevention function as claimed in claim 1, characterized in that: the inner diameter of the liquid suction port (2) formed in the base body (1) is equal to that of the liquid outlet (3), the base body (1) forms a communicating structure with the liquid outlet (3) through the liquid suction port (2), and the base body (1) is made of transparent corrosion-resistant glass.
3. A pipette with backflow prevention function as claimed in claim 1, characterized in that: the lower end of the base body (1) forms a sliding connection structure of the first piston (6) and the first movable cavity (4) through the first piston (6) installed in the first movable cavity (4), and the outer diameter of the first piston (6) is smaller than the inner diameter of the first nesting block (7).
4. A pipette with backflow prevention function as claimed in claim 1, characterized in that: the liquid collecting cavity (9) nested in the base body (1) forms a feeding structure of the liquid collecting cavity (9) through the guide pipe (8), and the inner diameter of the liquid collecting cavity (9) is larger than the outer diameter of the base body (1).
5. A pipette with backflow prevention function as claimed in claim 1, characterized in that: the connecting pipe (11) arranged at the upper end of the base body (1) forms a communicating structure of the negative pressure device (12) and the base body (1), and the through hole plate (13) arranged in the connecting pipe (11) forms an opening and closing structure of the base body (1) and the negative pressure device (12) through the second piston (15) arranged by the second push rod (14).
6. A pipette with backflow prevention function as claimed in claim 1, characterized in that: and a third piston (18) arranged in the second movable cavity (16) is nested in a third nesting block (19) through a third push rod (17) to form an opening and closing structure at the top of the base body (1), and the outer diameter of the third piston (18) is smaller than the inner diameter of the base body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120480537.8U CN214716755U (en) | 2021-03-05 | 2021-03-05 | Pipette with backflow prevention function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120480537.8U CN214716755U (en) | 2021-03-05 | 2021-03-05 | Pipette with backflow prevention function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214716755U true CN214716755U (en) | 2021-11-16 |
Family
ID=78592179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120480537.8U Expired - Fee Related CN214716755U (en) | 2021-03-05 | 2021-03-05 | Pipette with backflow prevention function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214716755U (en) |
-
2021
- 2021-03-05 CN CN202120480537.8U patent/CN214716755U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211116 |