CN-224216659-U - Full-automatic point titration detection device

Abstract

The utility model discloses a full-automatic point titration detection device, and relates to the field of quantitative analysis. The device includes solvent bottle and measuring cup, is provided with the sampling tube in the solvent bottle, is provided with the sampling tube in the measuring cup, is provided with first check valve, second check valve, tee bend and constant volume titrator between solvent bottle and the measuring cup, and first check valve is installed on the sampling tube, and the second check valve is installed on the sampling tube, and the tee bend is installed between sampling tube and sampling tube, and the constant volume titrator is installed in the bottom of tee bend, and the constant volume titrator is the same with the tee bend, and the constant volume titrator is used for inhaling the ration liquid in the solvent bottle and quantitative transport into in the second check valve. The device carries out strict control drip volume through the changer to carry out the terminal point judgement through indicating electrode and reference electrode, make the judgement not receive human error influence, it is more convenient to wash, makes installation and dismantlement comparatively fast and simple through modular design.

Inventors

• WANG HOUCHUN
• WANG BAOYU
• JIANG YULONG
• CHEN FENGXIANG

Assignees

• 北京天宇沃特仪表科技有限公司

Dates

Publication Date

20260508

Application Date

20250526

Claims (6)

1. 1. Full-automatic point position titration detection device, including solvent bottle (2) and measuring cup (12), its characterized in that, be provided with sampling tube (3) in solvent bottle (2), be provided with in measuring cup (12) and advance sampling tube (9), be provided with between solvent bottle (2) and measuring cup (12): The first one-way valve (4) is arranged on the sampling tube (3); a second one-way valve (8), wherein the second one-way valve (8) is arranged on the sample inlet pipe (9); the tee joint (5) is arranged between the sampling tube (3) and the sampling tube (9); The constant volume titrator (6), constant volume titrator (6) is installed in the bottom of tee bend (5), constant volume titrator (6) are the same with tee bend (5), constant volume titrator (6) are used for inhaling quantitative liquid in solvent bottle (2) and quantitative transport into in second check valve (8).
2. 2. The full-automatic point titration detection device according to claim 1, wherein an actuator (7) is further arranged between the solvent bottle (2) and the measuring cup (12), the actuator (7) is the same as the constant volume titrator (6), and an actuating rod of the actuator (7) is used for driving the constant volume titrator (6) to suck or output liquid.
3. 3. The full-automatic point titration detecting device according to claim 1, wherein the solvent bottle (2) is internally provided with a titration solution (1), the measuring cup (12) is internally provided with a sample (13), and a part of the titration solution (1) is dripped into the measuring cup (12) to form the sample (13) and is detected.
4. 4. The full-automatic point titration detection device according to claim 3, wherein a stirrer (15) is arranged at the bottom end of the measuring cup (12), a stirrer (14) is arranged at the top end of the stirrer (15), and the stirrer (14) is used for driving the sample (13) in the measuring cup (12) to stir.
5. 5. The full-automatic point titration detecting device according to claim 2, wherein a motor support (16) is arranged beside the measuring cup (12), the motor support (16) is arranged at one end of the stirrer (15), an indicating electrode (10) and a reference electrode (11) are arranged on the motor support (16), and the indicating electrode (10) and the reference electrode (11) are used for accurately judging a titration end point.
6. 6. The fully automatic point titration detection device according to claim 5, characterized in that the measuring cup (12) is further provided with: The transmitter (17), the motor wires of the indicating electrode (10) and the reference electrode (11) are connected with the transmitter (17), and the control wire of the actuator (7) is connected with the transmitter (17); And a printer (18), the printer (18) is also connected with the transmitter (17), and the printer (18) is used for printing report results immediately after titration is completed.

Description

Full-automatic point titration detection device Technical Field The utility model relates to the technical field of quantitative analysis, in particular to a full-automatic point titration detection device. Background In the field of chemical analysis, potentiometric titration is a classical quantitative analysis technique based on the electrochemical principle, and its traditional implementation is accomplished by means of manual or semi-automatic means, in which an operator is required to dissolve a sample containing a component to be measured in a solvent and manually drop a titration solution of known concentration into the solvent, while continuously monitoring an electrochemical system consisting of an indicator electrode and a reference electrode. The reference electrode maintains constant potential, the potential of the indicating electrode changes along with the concentration of the measured substance, when the reaction approaches to the stoichiometric point, the potential of the solution is suddenly changed, and an experimenter needs to judge the suddenly changed point as a titration end point through experience. The existing potentiometric titration method reflects a plurality of problems under long-term use, such as insufficient operation flexibility, time and labor are consumed when a large number of samples are detected due to manual or semi-automatic operation, titration parameters such as dripping speed and endpoint judgment are subject to human errors because manual intervention is needed, and the existing potentiometric titration method also has the problem of function singleization, only supports a few titration modes, cannot switch strategies such as dynamic titration, equivalent titration and the like according to complex sample characteristics, and time and labor are consumed when equipment is cleaned and reagents are replaced, so that the detection efficiency is affected. In view of the above, the present utility model provides a fully automatic point titration detection device to solve the above problems. Disclosure of utility model Aiming at the defects of the prior art, the utility model provides a full-automatic point titration detection device, which solves the problems that the existing potentiometric titration method reflects a plurality of problems under long-term use, such as insufficient operation flexibility, time and labor are consumed when a large number of samples are detected due to manual or semi-automatic operation, titration parameters such as the dropping speed and the end point judgment are easy to be influenced by human errors, and the problems of single functions are solved, only a few titration modes are supported, strategies such as dynamic titration, equivalent titration and the like can not be switched according to the characteristics of complex samples, and the problems that the time and labor are consumed when the equipment is used for cleaning and replacing reagents and the detection efficiency is influenced are solved. The full-automatic point titration detecting device comprises a solvent bottle and a measuring cup, wherein a sampling tube is arranged in the solvent bottle, a sample inlet tube is arranged in the measuring cup, a first one-way valve, a second one-way valve, a tee joint and a constant volume titrator are arranged between the solvent bottle and the measuring cup, the first one-way valve is arranged on the sampling tube, the second one-way valve is arranged on the sample inlet tube, the tee joint is arranged between the sampling tube and the sample inlet tube, the constant volume titrator is arranged at the bottom of the tee joint, the constant volume titrator is identical to the tee joint, and the constant volume titrator is used for sucking quantitative liquid in the solvent bottle and quantitatively conveying the quantitative liquid into the second one-way valve. Preferably, an actuator is further arranged between the solvent bottle and the measuring cup, the actuator is the same as the constant volume titrator, and an actuating rod of the actuator is used for driving the constant volume titrator to suck or output liquid. Preferably, the solvent bottle contains a titration solution, the measuring cup contains a sample, and a part of the titration solution is dripped into the measuring cup to become the sample and is detected. Preferably, a stirrer is arranged at the bottom end of the measuring cup, a stirrer is arranged at the top end of the stirrer, and the stirrer is used for driving the sample in the measuring cup to stir. Preferably, a motor support is arranged beside the measuring cup, the motor support is arranged at one end of the stirrer, an indicating electrode and a reference electrode are arranged on the motor support, and the indicating electrode and the reference electrode are used for accurately judging the titration end point. Preferably, a transducer and a printer are further arranged beside the measuring cup, motor wires