CN214473078U

CN214473078U - Automatic titration apparatus

Info

Publication number: CN214473078U
Application number: CN202120838887.7U
Authority: CN
Inventors: 王凤蕊; 赵律棋; 王志文; 詹晓芳
Original assignee: Shanghai Zeming Environmental Sci And Tech Co ltd
Current assignee: Shanghai Zeming Environmental Sci And Tech Co ltd
Priority date: 2021-04-22
Filing date: 2021-04-22
Publication date: 2021-10-22
Anticipated expiration: 2031-04-22

Abstract

The utility model discloses an automatic titration device, which relates to the technical field of chemical instruments and comprises an operation table, wherein a quantitative titration module and an electrode measuring module are arranged on the operation table; the quantitative titration module comprises a micro pump and a burette, the micro pump is arranged on the upper side of the operating platform, the burette is connected to the micro pump, one end of the burette extends into the inner bottom of the titration bottle, and the other end of the burette extends into the inner upper part of the conical bottle; the electrode measuring module comprises an electrode and a controller, the controller is positioned on one side of the operating platform, the lower end of the electrode is immersed in the conical flask, the upper end of the motor is connected with the controller through an electric wire, and the controller controls the micro pump. The utility model discloses a micropump and buret realize the auto-titration of titration liquid, and the micropump has the accurate measurement function, can confirm final titration volume when titrating the end, reduces experimenter's work load, and through the terminal point of independently confirming titration of electrode data, need not the naked eye and continuously observes the titration process, ensures measuring result's accuracy and stability.

Description

Automatic titration apparatus

Technical Field

The utility model relates to a chemical instrumentation's technical field especially relates to an automatic titration outfit.

Background

Titration is a common chemical quantitative analysis method, and generally, a titration endpoint is judged according to the color change of a solution, and then the concentration of the titrated solution is calculated according to the volume of the titrated solution.

In the prior art, the titration is generally carried out by a manual method, the titration end point is determined by visual observation, and the titration is stopped in time, so that the method is time-consuming and labor-consuming, requires high attention, and is easy to cause measurement errors due to fatigue when the sample amount is large.

Therefore, an automatic titration device is needed, so that the workload of experimenters can be reduced, and the accuracy and the stability of a measurement result are ensured.

SUMMERY OF THE UTILITY MODEL

Based on this, it is necessary to provide an automatic titration device to the not good problem of pile foundation baffle-type structure application effect, can the autotitration to reduce experimenter's work load, ensure measuring result's accuracy and stability simultaneously.

In order to realize the purpose, the utility model discloses the technical scheme who takes does:

an automatic titration device comprises an operation table, wherein a quantitative titration module and an electrode determination module are arranged on the operation table; a conical bottle for containing a liquid to be detected is arranged on the upper surface of the operating platform, and a titration bottle for containing a titration liquid is arranged on one side of the operating platform;

the quantitative titration module comprises a micro pump and a burette, the micro pump is arranged on the upper side of the operating platform, the burette is connected to the micro pump, one end of the burette extends into the inner bottom of the titration bottle, and the other end of the burette extends into the upper part of the conical bottle;

the electrode measuring module comprises an electrode and a controller, the controller is positioned on one side of the operating platform, the lower end of the electrode is immersed in the solution in the conical flask, the upper end of the electrode is connected with the controller through a wire, and the controller controls the micro pump.

In one of them embodiment, the operation panel includes base, mount, electrode mount and titrates the platform, the mount is along vertical the installation in one side of base upper surface, the electrode mount with titrate the platform and all follow transversely the installation on the mount, titrate the platform and be located the top of electrode mount, the micropump is installed titrate on the platform, the electrode is installed on the electrode mount.

In one embodiment, a magnetic stirring table and a heating table are arranged on the base, and the magnetic stirring table controls the rotating speed of a rotor in the conical flask by adjusting the magnitude of magnetic force.

In one embodiment, the electrode holder and the titration platform are both arranged on the holder in an up-and-down sliding manner.

In one embodiment, the electrode holder and the titration platform are locked on the holder by locking bolts.

In one embodiment, the titration liquid in the titration flask is transferred into the conical flask through the micro pump and the burette.

In one embodiment, the heating station is located on the upper surface of the magnetic stirring station, and the erlenmeyer flask is placed on the upper surface of the heating station.

Above-mentioned automatic titration device, owing to adopt above-mentioned technique, make it compare with prior art positive effect that has:

(1) the utility model discloses a micropump and buret will titrate the interior titration liquid ration of bottle and transmit to the erlenmeyer flask in, the work of micropump can be controlled to the controller, realizes the auto-titration of titration liquid, and the micropump has the accurate measurement function, can confirm finally titrate the volume when titrating the end, reduces experimenter's work load.

(2) The utility model discloses an electrode data is autonomic to be confirmed and is titrated the terminal point, need not the naked eye and continuously observes the titration process, and after the controller recorded the titration terminal point, the accuracy and the stability of measuring result are ensured to control micropump stop work, labour saving and time saving.

(3) The utility model discloses a set up magnetic stirring platform and warm table on the base, the magnetic stirring platform can stir solution in the erlenmeyer flask, ensures to titrate in-process solution misce bene, avoids local concentration too high to arouse measuring error, and the warm table can guarantee to titrate the process and go on under being in a specific temperature.

Drawings

Fig. 1 is a schematic view of the automatic titration apparatus of the present invention.

Reference numerals: 1. an operation table; 11. a base; 12. a fixed mount; 13. an electrode holder; 14. a titration platform; 2. a quantitative titration module; 21. a micro pump; 22. a burette; 3. an electrode measurement module; 31. an electrode; 32. a controller; 4. a conical flask; 5. a titration bottle; 6. a magnetic stirring table; 7. a heating stage.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings and specific 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.

As shown in fig. 1, fig. 1 is a schematic view of an automatic titration apparatus according to the present invention.

The embodiment of the utility model provides an automatic titration apparatus, including operation panel 1, there are quantitative titration module 2 and electrode measuring module 3 on the operation panel 1; the upper surface of the operating platform 1 is provided with a conical flask 4 containing a liquid to be measured, one side of the operating platform 1 is provided with a titration flask 5 containing a titration liquid, the quantitative titration module 2 is used for quantitatively conveying the titration liquid in the titration flask 5 into the conical flask 4, and the electrode determination module 3 confirms a titration end point through collected electrode data, so that the titration process is not required to be continuously observed by naked eyes, and the titration stability is improved.

The quantitative titration module 2 comprises a micropump 21 and a burette 22, the micropump 21 is arranged on the upper side of the operating platform 1, the burette 22 is connected to the micropump 21, one end of the burette 22 extends into the inner bottom of the titration bottle 5, the other end of the burette 22 extends into the upper part of the conical bottle 4, the titration liquid in the titration bottle 5 is quantitatively transmitted to the conical bottle 4 through the micropump 21 and the burette 22, the micropump 21 has an accurate metering function, the final titration volume can be determined when titration is finished, the micropump 21 is used for replacing manual liquid taking titration, time and labor are saved, and the accuracy of an experimental result can be improved.

The electrode measuring module 3 comprises an electrode 31 and a controller 32, the controller 32 is located on one side of the operating table 1, the lower end of the electrode 31 is immersed in the solution in the conical flask 4, the upper end of the electrode 31 is connected with the controller 32 through an electric wire, the controller 32 controls the micro-pump 21, the electrode 31 sends the measured data to the controller 32, a titration end point value is preset in the controller 32 in advance, the controller 32 analyzes and compares the data sent by the electrode 31 with the preset titration end point value, the titration end point is confirmed when the data of the electrode 31 reaches the titration end point value, then a command is sent to the micro-pump 21 to control the micro-pump 21 to stop working, when the titration end point is confirmed on the micro-pump 21, the volume of the required titration liquid is ensured, the accuracy and the stability of the measuring result are ensured, and time and labor are saved.

Further, operation panel 1 includes base 11, mount 12, electrode mount 13 and

titration platform

14, 11 levels of base are placed on the laboratory table, 11 upper surface of base is the plane, mount 12 is along the vertical one side of installing at 11 upper surfaces of base, electrode mount 13 and titration platform 14 are all along transversely installing on mount 12, titration platform 14 is located 13 top of electrode mount, titration platform 14 and electrode mount 13 all are located 11 of base directly over, micropump 21 installs on titration platform 14, electrode 31 installs on electrode mount 13, operation panel 1 plays the effect of supporting micropump 21, electrode 31, erlenmeyer flask 4.

The base 11 is provided with a magnetic stirring table 6 and a heating table 7, the magnetic stirring table 6 controls the rotating speed of a rotor (not shown in the figure) in the conical flask 4 by adjusting the magnetic force, so as to ensure that the solution is uniformly mixed in the titration process and avoid measurement errors caused by overhigh local concentration of the solution, the heating table 7 is used for heating the solution in the conical flask 4, a thermocouple (not shown in the figure) can be inserted into the conical flask 4, the upper end of the thermocouple is fixed on an electrode fixing frame 13, the thermocouple is contacted with the solution in the conical flask 4, the heating table 7 sets a temperature difference with the heating table 7 through the temperature fed back by the thermocouple, the heating power of the heating table is controlled so as to ensure that the measured environment temperature is an experimental set temperature value, and the titration process is carried out at a specific temperature.

In actual use, the heating temperature of the heating table 7 and the stirring speed of the magnetic stirring table 6 are automatically adjusted according to experimental contents and the volume of the solution, before titration operation, the erlenmeyer flask 4 containing the solution to be titrated is firstly placed on the heating table 7, and the heating temperature and the stirring speed are set according to actual conditions.

Electrode mount 13 and titration platform 14 all are the gliding setting of going up and down on mount 12, electrode mount 13 and titration platform 14 all lock on mount 12 through locking bolt (not shown in the figure), motor mount 12 and titration platform 14 height value can be adjusted from top to bottom on mount 12, after erlenmeyer flask 4 placed on base 11, according to the height of the solution volume regulation electrode mount 13 in erlenmeyer flask 4, the intermediate position of waiting to titrate the solution in erlenmeyer flask 4 is placed in to messenger's 31 bottom, adjust the height of titration platform 14, the lower extreme that makes the buret 22 that is in erlenmeyer flask 4 is higher than waiting to titrate solution liquid level 5 ~ 10cm in erlenmeyer flask 4, avoid titrating in-process buret 22 and dip below waiting to titrate the solution liquid level, so that observe the titration speed.

Further optimizing the above embodiment, the titration solution in the titration flask 5 is transferred to the conical flask 4 through the micro-pump 21 and the burette 22, the micro-pump 21 has a liquid inlet and a liquid outlet, the liquid inlet of the micro-pump 21 is connected with the titration flask 5 through one burette 22, and the liquid outlet of the micro-pump 21 is connected with the conical flask 4 through another burette 22.

Also, a heating stage 7 is located on the upper surface of the magnetic stirring stage 6, and the erlenmeyer flask 4 is placed on the upper surface of the heating stage 7.

The above examples only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. An automatic titration device comprises an operation table (1), and is characterized in that a quantitative titration module (2) and an electrode measuring module (3) are arranged on the operation table (1); a conical bottle (4) containing a liquid to be detected is arranged on the upper surface of the operating platform (1), and a titration bottle (5) containing a titration liquid is arranged on one side of the operating platform (1);

the quantitative titration module (2) comprises a micro pump (21) and a titration tube (22), the micro pump (21) is arranged on the upper side of the operating platform (1), the titration tube (22) is connected to the micro pump (21), one end of the titration tube (22) extends into the inner bottom of the titration bottle (5), and the other end of the titration tube (22) extends into the upper part of the conical bottle (4);

the electrode measuring module (3) comprises an electrode (31) and a controller (32), the controller (32) is located on one side of the operating platform (1), the lower end of the electrode (31) is immersed in the solution in the conical flask (4), the upper end of the electrode (31) is connected with the controller (32) through a wire, and the controller (32) controls the micro pump (21).

2. The automatic titration device according to claim 1, wherein the operation platform (1) comprises a base (11), a fixing frame (12), an electrode fixing frame (13) and a titration platform (14), the fixing frame (12) is vertically installed on one side of the upper surface of the base (11), the electrode fixing frame (13) and the titration platform (14) are both installed on the fixing frame (12) along the transverse direction, the titration platform (14) is located above the electrode fixing frame (13), the micropump (21) is installed on the titration platform (14), and the electrode (31) is installed on the electrode fixing frame (13).

3. An automatic titration device according to claim 2, characterized in that a magnetic stirring platform (6) and a heating platform (7) are arranged on the base (11), and the magnetic stirring platform (6) controls the rotation speed of the rotor in the conical flask (4) by adjusting the magnetic force.

4. An automatic titration device according to claim 3, wherein the electrode holder (13) and the titration platform (14) are both arranged to slide up and down on the holder (12).

5. An automatic titration device according to claim 4, wherein the electrode holder (13) and the titration platform (14) are locked to the holder (12) by locking bolts.

6. An automatic titration device according to claim 1, wherein the titration liquid in the titration flask (5) is transported into the conical flask (4) by the micro pump (21), the burette (22).

7. An automatic titration device according to claim 3, wherein the heating station (7) is located on the upper surface of the magnetic stirring station (6) and the erlenmeyer flask (4) is placed on the upper surface of the heating station (7).