CN216499457U - High-precision quantitative liquid adding device - Google Patents
High-precision quantitative liquid adding device Download PDFInfo
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- CN216499457U CN216499457U CN202122776477.7U CN202122776477U CN216499457U CN 216499457 U CN216499457 U CN 216499457U CN 202122776477 U CN202122776477 U CN 202122776477U CN 216499457 U CN216499457 U CN 216499457U
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Abstract
The utility model relates to a high-precision quantitative liquid adding device which comprises a sample injector, a liquid inlet pipe, a liquid outlet pipe, a sample injection needle tube, a control module and a touch screen, wherein the control module is used for realizing the extraction or distribution of liquid by the sample injection needle tube by controlling the sample injector and is in data communication with the touch screen and an external handle. The utility model effectively reduces errors caused by human beings, improves the working efficiency and simultaneously prevents the problem of cross contamination caused by adding two or more reagents in a simple, rapid and accurate operation mode.
Description
Technical Field
The utility model relates to a high-precision quantitative liquid adding device, belonging to the technical field of instruments and meters.
Background
In various experiments of chemistry, biology and the like, most of experimental samples need to be pretreated, and the development of sample pretreatment technology and instruments is slow, so that the development of analytical chemistry is restricted. With the increasing nature of the samples and the complexity of the steps, the test period is longer. Meanwhile, the accuracy of experimental data is reduced due to human errors caused by operators in the operation process. In some experimental operation processes, because reagents harmful to human bodies are used, laboratory workers easily inhale toxic and harmful gases in the experimental operation processes.
The prior sample pretreatment mainly comprises liquid distribution of a pipette, scales of the pipette are observed by human eyes, some human errors are easy to generate, and the manual work efficiency is low.
Disclosure of Invention
The utility model provides a high-precision quantitative liquid adding device for solving the problems, and aims to effectively reduce errors caused by human beings in a simple, quick and accurate operation mode, improve the working efficiency and simultaneously prevent the problem of cross contamination of two or more reagents.
The purpose of the utility model is realized by the following technical scheme:
this kind of high accuracy ration liquid feeding device includes injector 1, feed liquor pipe 8, drain pipe 9, advance a kind needle tubing 10, control module 2, touch screen 11, wherein:
the sample injector 1 comprises a Y-shaped valve 3, a stepping motor 4, a screw 5 and a guide base 6, wherein the Y-shaped valve 3 is respectively connected with a liquid inlet pipe 8, a liquid outlet pipe 9 and the upper end of a sample injection needle tube 10, the lower end of the sample injection needle tube 10 is fixed with the guide base 6, the guide base 6 is connected with the screw 5, and the stepping motor 4 controls the screw 5 to work;
the control module 2 controls the sample injector 1 to extract or distribute liquid from the sample injector tube 10, and performs data communication with the touch screen 11.
Furthermore, the sample injection needle tube 10 can be replaced by different volumes, and the volume is 100 microliters to 25 milliliters.
Further, a liquid level sensor 15 for detecting the liquid level height in the mother liquid bottle is fixedly installed at the bottom of the liquid inlet pipe 8, and the liquid level sensor 15 is connected with the control module 2.
Further, the control module 2 controls an external handle 7, and the external handle 7 comprises a film key 12, a display lamp 13 and a buzzer 14.
Further, a mother liquid bottle 16 and a pure water reagent bottle 19 are placed on the left side of the sample injector 1.
Further, a sample bottle 17 and a waste cup 18 are placed on the right side of the sample injector 1.
The working principle of the utility model is as follows:
the control module 2 controls the stepping motor 4 to move clockwise or anticlockwise to drive the screw 5 to rotate, the guide base 6 is fixed on the screw 5, and the screw 5 drives the sample injection needle tube 10 to move upwards and downwards through the guide base 6 to realize the extraction and distribution of liquid. The control module 2 is in data communication with the touch screen 11 and the external handle 7. When the liquid level sensor 15 detects that the liquid in the mother liquid bottle 16 is insufficient, the buzzer 14 will give out a prompt sound. When the required liquid is added, the display lamp will light and the buzzer 14 will give a warning sound.
The positive progress effects of the utility model are as follows:
the device provided by the utility model can obviously improve the accuracy and precision of the analysis data. The experimental period is shortened, the working efficiency is greatly improved, the problems that liquid adding human factors are many, the control is not easy, and the liquid adding precision cannot meet the requirements are solved, the error caused by human factors is reduced, and the problem of cross contamination of two or more reagents is prevented.
Drawings
FIG. 1 is a schematic view of the structure of the apparatus of the present invention
Detailed Description
The technical scheme of the utility model is further detailed in the following by combining the drawings and the embodiment:
referring to the attached figure 1, the high-precision quantitative liquid adding device comprises a sample injector 1, a liquid inlet pipe 8, a liquid outlet pipe 9, a sample injection needle tube 10, a control module 2 and a touch screen 11, wherein:
the sample injector 1 comprises a Y-shaped valve 3, a stepping motor 4, a screw 5 and a guide base 6, wherein the Y-shaped valve 3 is respectively connected with a liquid inlet pipe 8, a liquid outlet pipe 9 and the upper end of a sample injection needle tube 10, the lower end of the sample injection needle tube 10 is fixed with the guide base 6, the guide base 6 is connected with the screw 5, and the stepping motor 4 controls the screw 5 to work;
the control module 2 controls the sample injector 1 to extract or distribute liquid from the sample injector tube 10, and performs data communication with the touch screen 11.
The sample injection needle tube 10 can be replaced by different volumes, and the volume is 100 microliters to 25 milliliters.
The bottom of the liquid inlet pipe 8 is fixedly provided with a liquid level sensor 15 for detecting the liquid level height in the mother liquid bottle, and the liquid level sensor 15 is connected with the control module 2.
The control module 2 controls an external handle 7, and the external handle 7 comprises a film key 12, a display lamp 13 and a buzzer 14.
The liquid adding steps of the high-precision quantitative liquid adding device are as follows:
step one, preparation: placing a mother liquid bottle 16 and a pure water reagent bottle 19 on the left side of the sample injector 1, placing a sample bottle 17 and a waste liquid cup 18 on the right side of the sample injector 1, and respectively connecting the mother liquid bottle and the waste liquid cup with an inlet pipe 8, an outlet pipe 9 and the upper end of a sample injection needle tube 10 through a Y-shaped valve 3;
step two, pure water cleaning: placing the liquid inlet pipe 8 in the pure water reagent bottle 19, placing the liquid outlet pipe 9 above the waste liquid cup 18, extracting pure water from the pure water reagent bottle 4 by the sample injection needle tube 10 through the liquid inlet pipe 8, switching the Y-shaped valve 3, and distributing the pure water into the waste liquid cup 18 by the sample injection needle tube 10 through the liquid outlet pipe 9;
inputting the cleaning times in the touch screen 11 or the external handle 7, continuously cleaning the liquid inlet pipe 8, the liquid outlet pipe 9 and the sample injection needle pipe 10 by the control module 2 through controlling the sample injection needle pipe 10 to extract pure water, and sending a prompt sound by the buzzer 14 after cleaning;
step three, mother liquor cleaning: placing a liquid inlet pipe 8 in a mother liquid bottle 16, placing a liquid outlet pipe 9 in a sample bottle 17, extracting liquid from the mother liquid bottle 16 by a sample injection needle tube 10 through the liquid inlet pipe 8, switching the Y-shaped valve 3, and distributing the liquid to a waste liquid cup 18 by the sample injection needle tube 10 through the liquid outlet pipe 9;
inputting the cleaning times in the touch screen 11 or the external handle 7, continuously cleaning the liquid inlet pipe 8, the liquid outlet pipe 9 and the sample injection needle pipe 10 by the control module 2 through controlling the sample injection needle pipe 10 to extract liquid, and sending a prompt sound by the buzzer 14 after cleaning;
the method has the advantages that 2 times of pure water cleaning and 1 time of mother liquor cleaning are needed when different mother liquor is replaced each time, so that cross contamination caused by adding two or more reagents is prevented;
step four, adding mother liquor: place feed liquor pipe 8 in mother liquor bottle 16, in sample bottle 17 was placed to drain pipe 9, sample injection needle tubing 10 extracted the liquid of the volume that touch-control screen 11 or external handle 7 set for from mother liquor bottle 16 through feed liquor pipe 8, switched Y type valve 3, sample injection needle tubing 10 pass through drain pipe 9 with liquid distribution to sample bottle 2, buzzer 14 can send the prompt tone after the liquid feeding is accomplished.
The high-precision quantitative liquid adding device can be widely applied to a chemical detection laboratory, so that the accuracy and precision of analysis data are obviously improved. The experimental period is shortened, the working efficiency is greatly improved, the problems that liquid adding human factors are many, the control is not easy, and the liquid adding precision cannot meet the requirements are solved, the error caused by human factors is reduced, and the problem of cross contamination of two or more reagents is prevented.
Claims (6)
1. The utility model provides a high accuracy ration liquid feeding device which characterized in that: the device includes injector (1), feed liquor pipe (8), drain pipe (9), advance a kind needle tubing (10), control module (2), touch screen (11), wherein:
the sample injector (1) comprises a Y-shaped valve (3), a stepping motor (4), a screw rod (5) and a guide base (6), wherein the Y-shaped valve (3) is respectively connected with a liquid inlet pipe (8), a liquid outlet pipe (9) and the upper end of a sample injection needle tube (10), the lower end of the sample injection needle tube (10) is fixed with the guide base (6), the guide base (6) is connected with the screw rod (5), and the stepping motor (4) controls the screw rod (5) to work;
the control module (2) is used for realizing the extraction or the distribution of liquid by the sample injection needle tube (10) by controlling the sample injector (1) and carrying out data communication with the touch screen (11).
2. The high-precision quantitative liquid adding device according to claim 1, characterized in that: the sample injection needle tube (10) can be replaced by different volumes, and the volume is 100 microliters to 25 milliliters.
3. The high-precision quantitative liquid adding device according to claim 1, characterized in that: the bottom of the liquid inlet pipe (8) is fixedly provided with a liquid level sensor (15) for detecting the liquid level height in the mother liquid bottle, and the liquid level sensor (15) is connected with the control module (2).
4. The high-precision quantitative liquid adding device according to claim 1, characterized in that: the control module (2) controls an external handle (7), and the external handle (7) comprises a film key (12), a display lamp (13) and a buzzer (14).
5. The high-precision quantitative liquid adding device according to claim 1, characterized in that: a mother liquor bottle (16) and a pure water reagent bottle (19) are arranged on the left side of the sample injector (1).
6. The high-precision quantitative liquid adding device according to claim 1, characterized in that: the sample bottle (17) and the waste liquid cup (18) are arranged on the right side of the sample injector (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122776477.7U CN216499457U (en) | 2021-11-10 | 2021-11-10 | High-precision quantitative liquid adding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122776477.7U CN216499457U (en) | 2021-11-10 | 2021-11-10 | High-precision quantitative liquid adding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216499457U true CN216499457U (en) | 2022-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122776477.7U Active CN216499457U (en) | 2021-11-10 | 2021-11-10 | High-precision quantitative liquid adding device |
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| Country | Link |
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| CN (1) | CN216499457U (en) |
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2021
- 2021-11-10 CN CN202122776477.7U patent/CN216499457U/en active Active
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