CN211537800U - Liquid level calibrating device for chemistry experiments - Google Patents
Liquid level calibrating device for chemistry experiments Download PDFInfo
- Publication number
- CN211537800U CN211537800U CN201821643885.7U CN201821643885U CN211537800U CN 211537800 U CN211537800 U CN 211537800U CN 201821643885 U CN201821643885 U CN 201821643885U CN 211537800 U CN211537800 U CN 211537800U
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- Prior art keywords
- liquid level
- connecting cylinder
- mount pad
- dropper
- damping
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Abstract
The utility model belongs to the technical field of chemistry experiment equipment, a liquid level calibrating device for chemistry experiments is disclosed, is provided with: a dropper; the bottom of burette cup joints installs the dripper, the connecting cylinder is installed on the upper portion of burette, the connecting cylinder top cup joints installs the mount pad, the upper end inlay card of mount pad installs the support frame, install the damping plate through the pivot on the support frame, install damping spring between damping plate and the mount pad. In the technical scheme, the tail part of the dropper is connected with the connecting cylinder through threads, so that convenience is brought to a user to replace the connecting cylinder for replacing different droppers. This liquid level calibrating device for chemistry experiments adjusts damping plate pressing force degree through damping spring's damping coefficient change to when realizing different liquid level calibrations, the volume that needs the dropwise add. The problem of traditional buret titration amount great, can't titrate the accurate volume is solved.
Description
Technical Field
The utility model belongs to the technical field of chemical experiment equipment, especially, relate to a liquid level calibrating device for chemistry experiments.
Background
In carrying out chemical experiments, titration experiments are often required using titrimetric methods. The titrimetric method is a kind of chemical analysis method in which a reagent solution whose exact concentration is known is dropped into a solution of a substance to be measured until the chemical reaction is completed, and then the content of a component to be measured can be determined from the concentration and volume of the reagent solution used, and this method is called titrimetric method.
At present, in the titration experiment process, a burette is often needed to be used for liquid level calibration so that the liquid level reaches the position required by people. Traditional laboratory glassware uses the buret to go on, but the titration scope of buret is great, hardly controls accurate titration volume to can't be accurate carry out the liquid level calibration, and traditional laboratory glassware operates the step too loaded down with trivial details, inconvenient user uses.
In summary, the problems of the prior art are as follows:
(1) traditional laboratory glassware uses the buret to go on, but the titration scope of buret is great, hardly controls accurate titration volume to can't be accurate carry out liquid level calibration.
(2) The traditional experimental tool is too cumbersome in operation steps and inconvenient for users to use.
Disclosure of Invention
To the problem that prior art exists, the utility model provides a liquid level calibrating device for chemistry experiments.
The utility model discloses a realize like this, a liquid level calibrating device for chemistry experiments includes:
a dropper;
the bottom of burette cup joints installs the dripper, the connecting cylinder is installed on the upper portion of burette, the connecting cylinder top cup joints installs the mount pad, the upper end inlay card of mount pad installs the support frame, install the damping plate through the pivot on the support frame, install damping spring between damping plate and the mount pad.
In the technical scheme, the dropper is a device main body, on one hand, the dropper is connected with and fixes various structures of the device, and on the other hand, liquid for experiments can be used; the dripper is convenient for a user to drip liquid, so that the liquid in the device flows out; the connecting cylinder plays a role in connecting the mounting seat and the dropper and is of a connecting structure; the supporting frame is used for supporting and connecting the damping plate and fixing the damping plate on the mounting seat; the damping plate has good physical and mechanical properties and excellent insulating property; and a damping spring is arranged between the damping plate and the mounting seat and used for increasing the pressing damping and improving the pressing accuracy.
Furthermore, scale marks are carved on the tube body of the dropper.
The arrangement of the scale marks in the technical scheme is convenient for a user to measure the volume of the liquid and other numerical values.
Furthermore, a key is embedded and installed above the installation seat.
In the technical scheme, the key is arranged above the mounting seat and can control the damping coefficient of the damping spring.
Further, the upper portion of the dropper is provided with threads, and the upper portion of the dropper is connected with a connecting cylinder through the threads.
In the technical scheme, the tail part of the dropper is connected with the connecting cylinder through threads, so that convenience is brought to a user to replace the connecting cylinder for replacing different droppers.
Drawings
FIG. 1 is a schematic front view of a liquid level calibration apparatus for chemical experiments according to an embodiment of the present invention;
fig. 2 is a schematic view of a dropper structure of the liquid level calibration apparatus for chemical experiments according to an embodiment of the present invention.
In the figure: 1. a dripper; 2. scale lines; 3. a dropper; 4. a connecting cylinder; 5. a damping spring; 6. a mounting seat; 7. a damping plate; 8. a support frame; 9. and (6) pressing a key.
Detailed Description
In order to further understand the contents, features and effects of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings.
As shown in fig. 1 and fig. 2, the utility model provides a liquid level calibration device for chemistry experiments includes: the dropper comprises a dropper 1, scale marks 2, a dropper 3, a connecting cylinder 4, a damping spring 5, a mounting seat 6, a damping plate 7, a support frame 8 and a key 9.
The bottom of burette 3 is cup jointed and is installed dripper 1, connecting cylinder 4 is installed on the upper portion of burette 3, connecting cylinder 4 top is cup jointed and is installed mount pad 6, the upper end inlay card of mount pad 6 installs support frame 8, install damping plate 7 through the pivot on the support frame 8, install damping spring 5 between damping plate 7 and the mount pad 6.
As a preferred embodiment of the present invention, the burette 3 has scale marks 2 engraved on its body.
As the preferred embodiment of the utility model, the button 9 is installed to the top inlay card of mount pad 6.
As a preferred embodiment of the present invention, the upper portion of the dropper 3 is provided with a thread, and the upper portion of the dropper 3 is connected to the connecting cylinder 4 through the thread.
This liquid level calibrating device for chemistry experiments adjusts damping plate 7 according to the pressure degree through damping spring 5's damping coefficient change to when realizing different liquid level calibrations, the volume that needs the dropwise add. The problem of traditional buret titration amount great, can't titrate the accurate volume is solved.
The utility model discloses a theory of operation:
when in use, the dropper 3 is fixed in the connecting cylinder 4, and a certain amount of chemical reagent is sucked by pressing the damping plate 7. The dropper 3 is extended into a test tube to be subjected to liquid level calibration, the mounting seat 6 is held by the palm, the key 9 is pressed by the thumb, the damping plate 7 is pressed by the forefinger, the force for pressing the key 9 by the thumb is adjusted according to the required titration amount, and the damping coefficient can be changed by the damping spring 5 at the moment. When the amount of calibration is less, the damping coefficient of the damping spring 5 becomes larger, and the liquid level calibration can be accurately carried out. When the amount required to be calibrated is large, the damping coefficient is reduced, and the damping plate 7 can be easily pressed to rapidly add the amount.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all the modifications and equivalents of the technical spirit of the present invention to any simple modifications of the above embodiments are within the scope of the technical solution of the present invention.
Claims (4)
1. The utility model provides a liquid level calibrating device for chemistry experiments which characterized in that, liquid level calibrating device for chemistry experiments includes:
a dropper;
the bottom of burette cup joints installs the dripper, the connecting cylinder is installed on the upper portion of burette, the connecting cylinder top cup joints installs the mount pad, the upper end inlay card of mount pad installs the support frame, install the damping plate through the pivot on the support frame, install damping spring between damping plate and the mount pad.
2. The apparatus for calibrating a liquid level in a chemical experiment as set forth in claim 1, wherein a scale is marked on a tube body of said dropper.
3. The apparatus of claim 1, wherein a button is mounted on the mounting seat in a snap-fit manner.
4. The apparatus for calibrating a liquid level in a chemical experiment as set forth in claim 1, wherein a thread is provided on an upper portion of the dip pipe, and a connection cylinder is threadedly connected to the upper portion of the dip pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821643885.7U CN211537800U (en) | 2018-10-09 | 2018-10-09 | Liquid level calibrating device for chemistry experiments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821643885.7U CN211537800U (en) | 2018-10-09 | 2018-10-09 | Liquid level calibrating device for chemistry experiments |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211537800U true CN211537800U (en) | 2020-09-22 |
Family
ID=72487428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821643885.7U Expired - Fee Related CN211537800U (en) | 2018-10-09 | 2018-10-09 | Liquid level calibrating device for chemistry experiments |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211537800U (en) |
-
2018
- 2018-10-09 CN CN201821643885.7U patent/CN211537800U/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: 20200922 Termination date: 20211009 |