CN214472800U

CN214472800U - Colorimetric device for determining titration end point

Info

Publication number: CN214472800U
Application number: CN202022864077.7U
Authority: CN
Inventors: 钱梦雅; 孙琴琴; 何爱明
Original assignee: Jiangsu Jinxin Testing Technology Service Co ltd
Current assignee: Jiangsu Jinxin Testing Technology Service Co ltd
Priority date: 2020-12-03
Filing date: 2020-12-03
Publication date: 2021-10-22
Anticipated expiration: 2030-12-03

Abstract

The utility model discloses a color comparison device for judging titration terminal point, including the intelligent device body, the last fixed surface of the intelligent device body is connected with the support post, the right flank of support post passes through rubber clamp tighrening ring fixedly connected with buret, there is transparent test tube right flank of support post just is located the buret under through plastics clamp tighrening ring swing joint, the upper surface of the intelligent device body just is located transparent test tube under seted up the test zone heavy groove, the bottom in test zone heavy groove is provided with the photochromic inductor of experiment, belongs to and titrates experimental facilities technical field. The utility model discloses a set up standard colorimetric card, the concentration range who titrates solution is selected in advance, recycles the photochromic sensor and carries out the machine contrast, improves colour contrast precision, and automatic end through intelligent control titrates the operation at last, has improved titration precision, has replaced the consumption of experimenter energy, has improved the efficiency of titration experiment.

Description

Colorimetric device for determining titration end point

Technical Field

The utility model relates to a titrate experimental facilities technical field, specifically be a color comparison device for judging titration terminal point.

Background

In a laboratory, a titration apparatus is often needed to determine the concentration of a specific component in a certain solution, so that specific gravity detection data is obtained by calculation, and the titration experiment has great application value.

However, in the conventional titration experiment method, the titration end point is judged by observing the color change of an operator, and because the color change of the titration end point is not obvious and has delay, all the requirements on the experimenter in the operation process are very high, and the titration end point can be accurately judged only by concentrating the operator. In order to simplify the determination of the titration end point, a novel colorimetric device for determining the titration end point is proposed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a color comparison device for judging titration terminal point to solve the problem that provides among the above-mentioned background art.

In order to solve the technical problem, the utility model provides a following technical scheme: the intelligent device comprises an intelligent device body, wherein a supporting stand column is fixedly connected to the upper surface of the intelligent device body, a burette is fixedly connected to the right side surface of the supporting stand column through a rubber clamping ring, a transparent test tube is movably connected to the right side surface of the supporting stand column and is positioned under the burette through a plastic clamping ring, a test area sinking groove is formed in the upper surface of the intelligent device body and is positioned under the transparent test tube, and an experimental photochromic sensor is arranged at the bottom of the test area sinking groove;

the upper surface of the intelligent device body and the right-hand fixedly connected with colorimetric card slot that is located transparent test tube, colorimetric card slot has standard colorimetric card through inner wall spout swing joint, the upper surface of the intelligent device body and the inboard that is located the colorimetric card slot have seted up the heavy groove in colorimetric district, the bottom in the heavy groove in colorimetric district is provided with the photochromic inductor of contrast.

A titration control valve is arranged between the spheroid and the needle-shaped contraction end of the burette.

The lateral surface of transparent test tube just is located the last fixed surface of plastic clamp ring and is connected with spacing snap ring.

The upper surface of the intelligent device body and the oblique side face close to the rear side face are provided with item conversion knobs, and the right side of the item conversion knobs and the upper oblique face located on the intelligent device body are provided with a state display screen.

The upper surface of the intelligent device body and the left side of the support column are provided with a concentration lower limit adjusting knob, and the upper surface of the intelligent device body and the annular inner side wall of the concentration lower limit adjusting knob are provided with a concentration upper limit adjusting knob.

The rear side face of the intelligent device body is provided with a power supply interface.

And the controller in the intelligent device body is electrically connected with the item conversion knob, the state display screen, the experimental light color sensor, the contrast light color sensor, the concentration upper limit adjusting knob and the concentration lower limit adjusting knob.

The lower surface of the intelligent device body is provided with a plurality of rubber cushion blocks, and the rubber cushion blocks are symmetrically and uniformly distributed on the lower surface of the intelligent device body.

Compared with the prior art, the utility model discloses the beneficial effect who reaches is: through setting up standard colorimetric card, the concentration range who titrates the solution is selected in advance, utilizes the light color inductor to carry out the machine contrast again, improves the colour contrast precision, and automatic end through intelligent control titrates the operation at last, has improved the titration precision, has replaced the consumption of experimenter vigor, has improved the efficiency of titration experiment.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic diagram of the overall structure of a colorimetric device for determining a titration end point according to the present invention;

fig. 2 is a front view of a colorimetric device for determining a titration end point according to the present invention;

fig. 3 is a right side view of a colorimetric device for determining a titration end point according to the present invention;

fig. 4 is a top view of a colorimetric device for determining a titration endpoint according to the present invention;

fig. 5 is a rear view of a colorimetric device for determining a titration end point according to the present invention;

in the figure: 1. a smart device body; 2. supporting the upright post; 3. settling a tank in the colorimetric area; 4. a standard color comparison card; 5. a colorimetric card slot; 6. sinking a test area into a groove; 7. a rubber clamping ring; 8. a plastic clamping ring; 9. a burette; 10. a titration control valve; 11. a limit snap ring; 12. a transparent test tube; 13. an upper concentration limit adjusting knob; 14. a concentration lower limit adjusting knob; 15. an experimental light color sensor; 16. contrasting the light color sensors; 17. a status display screen; 18. a project conversion knob; 19. a power interface; 20. and a rubber cushion 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. 1-5, the present invention provides a technical solution: comprises an intelligent device body 1 for arranging various devices and experimental instruments, a supporting upright post 2 is fixedly connected on the upper surface of the intelligent device body 1 and used for installing the experimental instrument, a burette 9 is fixedly connected on the right side surface of the supporting upright post 2 through a rubber clamping ring 7, main components of the experiment titration are arranged, a titration control valve 10 is arranged between a spheroid of the burette 9 and a needle-shaped contraction end and used for controlling the setting and stopping of the titration, a transparent test tube 12 is movably connected on the right side surface of the supporting upright post 2 and is positioned under the burette 9 through a plastic clamping ring 8, the observation of the color of the test reagent is convenient, a limit snap ring 11 is fixedly connected on the outer side surface of the transparent test tube 12 and is positioned on the upper surface of the plastic clamping ring 8 and used for preventing the transparent test tube 12 from sliding off the plastic clamping ring 8, a test area sink 6 is arranged on the upper surface of the intelligent device body 1 and is positioned under the transparent test tube 12, the bottom of the test area heavy groove 6 is provided with an experimental photochromic inductor 15 for detect the color of the reaction reagent in the transparent test tube 12, the upper surface of the intelligent device body 1 is positioned on the right side of the transparent test tube 12 and is fixedly connected with a colorimetric card slot 5, the colorimetric card slot 5 is movably connected with a standard colorimetric card 4 through an inner wall sliding slot, the standard reference of the color is displayed as the specific concentration, the upper surface of the intelligent device body 1 is positioned on the inner side of the colorimetric card slot 5 and is provided with a colorimetric area heavy groove 3, and the bottom of the colorimetric area heavy groove 3 is provided with a contrasting photochromic inductor 16 for obtaining the color of the colorimetric card.

An item conversion knob 18 is arranged on the upper surface of the intelligent device body 1 and on the oblique side surface close to the rear side surface, and is used for rotating the type of titration experiment to be performed, a state display screen 17 is arranged on the right side of the item conversion knob 18 and on the upper oblique surface of the intelligent device body 1 and is used for displaying the type of the experiment and the state of the experiment, a concentration lower limit adjusting knob 14 is arranged on the upper surface of the intelligent device body 1 and on the left side of the support upright post 2 and is used for adjusting the lower limit of the concentration detection range, a concentration upper limit adjusting knob 13 is arranged on the upper surface of the intelligent device body 1 and on the annular inner side wall of the concentration lower limit adjusting knob 14 and is used for adjusting the upper limit of the concentration detection range, a power supply interface 19 is arranged on the rear side surface of the intelligent device body 1 and is used for supplying power to the whole equipment, a controller and item conversion knob 18, a state display screen 17, an experiment light color sensor 15, a light color sensor and a light color sensor 14, a light color sensor, and a light color sensor, which are arranged on the light color sensor, and a light color sensor, and, The contrast light color sensor 16, the concentration upper limit adjusting knob 13 and the concentration lower limit adjusting knob 14 are electrically connected and used for transmitting signals, the plurality of rubber cushion blocks 20 are arranged on the lower surface of the intelligent device body 1, the rubber cushion blocks 20 are symmetrically and uniformly distributed on the lower surface of the intelligent device body 1, supporting force required by placement of the whole device is provided, and meanwhile interference of external vibration is reduced.

The utility model discloses a theory of operation: before use, the type of an experimental item is selected through the item conversion knob 18, the range interval of concentration detection is determined through the concentration upper limit adjusting knob 13 and the concentration lower limit adjusting knob 14, then the standard colorimetric card 4 with determined reagent concentration is selected, a reagent with determined volume and used for color display is added into the transparent test tube 12, and finally the reagent with determined concentration is carried in the burette 9; when the device is used, the intelligent device body 1 is started, the color characteristics of the standard colorimetric card 4 are preferentially obtained by the contrast light color sensor 16, the experimental light color sensor 15 is then started to obtain the color of the reagent in the transparent test tube 12, if the two colors are not matched, the controller starts the titration control valve 10 to enable the solution in the titration tube 9 to drip downwards under the action of self gravity, the titrated reagent reacts with the color developing reagent in the transparent test tube 12 to generate a specific color, the color is gradually deepened along with titration until the detected color is completely matched with the reference color, the titration control valve 10 is closed, the volume of the reagent reduced in the titration tube 9 and the volume increased in the transparent test tube 12 are recorded, the concentration of the detected reagent can be calculated by using a human concentration calculation formula, and the proportion of the amount of the component substances in the sample is deduced.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: 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 described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A colorimetric device for determining a titration end-point, comprising an intelligent device body (1), characterized in that: the intelligent device comprises an intelligent device body (1), a supporting upright post (2) is fixedly connected to the upper surface of the intelligent device body (1), a burette (9) is fixedly connected to the right side surface of the supporting upright post (2) through a rubber clamping ring (7), a transparent test tube (12) is movably connected to the right side surface of the supporting upright post (2) and is positioned right below the burette (9) through a plastic clamping ring (8), a test area sink groove (6) is formed in the upper surface of the intelligent device body (1) and is positioned right below the transparent test tube (12), and an experiment photochromic inductor (15) is arranged at the bottom of the test area sink groove (6);

the upper surface of the intelligent device body (1) and the right-hand fixedly connected with colorimetric card slot (5) that is located transparent test tube (12), colorimetric card slot (5) has standard colorimetric card (4) through inner wall spout swing joint, the upper surface of the intelligent device body (1) and the inboard that is located colorimetric card slot (5) have seted up colorimetric district heavy groove (3), the bottom of colorimetric district heavy groove (3) is provided with contrast photochromic inductor (16).

2. A colorimetric device for determining a titration endpoint according to claim 1, wherein: a titration control valve (10) is arranged between the spheroid and the needle-shaped contraction end of the burette (9).

3. A colorimetric device for determining a titration endpoint according to claim 1, wherein: the outer side surface of the transparent test tube (12) is fixedly connected with a limiting snap ring (11) on the upper surface of the plastic clamping ring (8).

4. A colorimetric device for determining a titration endpoint according to claim 1, wherein: the upper surface of the intelligent device body (1) and the oblique side face close to the rear side face are provided with item conversion knobs (18), and the right side of the item conversion knobs (18) and the upper oblique face located on the intelligent device body (1) are provided with a state display screen (17).

5. A colorimetric device for determining a titration endpoint according to claim 1, wherein: the upper surface of the intelligent device body (1) and the left side of the support column (2) are provided with a concentration lower limit adjusting knob (14), and the upper surface of the intelligent device body (1) and the annular inner side wall of the concentration lower limit adjusting knob (14) are provided with a concentration upper limit adjusting knob (13).

6. A colorimetric device for determining a titration endpoint according to claim 1, wherein: the rear side face of the intelligent device body (1) is provided with a power supply interface (19).

7. A colorimetric device for determining a titration endpoint according to claim 1, wherein: the intelligent device comprises an intelligent device body (1), wherein a controller inside the intelligent device body (1) is electrically connected with a project conversion knob (18), a state display screen (17), an experimental light color sensor (15), a contrast light color sensor (16), a concentration upper limit adjusting knob (13) and a concentration lower limit adjusting knob (14).

8. A colorimetric device for determining a titration endpoint according to claim 1, wherein: the lower surface of the intelligent device body (1) is provided with a plurality of rubber cushion blocks (20), and the rubber cushion blocks (20) are symmetrically and uniformly distributed on the lower surface of the intelligent device body (1).