CN218496951U

CN218496951U - Full-automatic potentiometric titration wet chemistry online analyzer

Info

Publication number: CN218496951U
Application number: CN202222644006.5U
Authority: CN
Inventors: 王剑明; 李鸿文
Original assignee: Shanghai Feizeng Technology Co ltd
Current assignee: Shanghai Feizeng Technology Co ltd
Priority date: 2022-10-09
Filing date: 2022-10-09
Publication date: 2023-02-17
Anticipated expiration: 2032-10-09

Abstract

The utility model discloses a wet chemistry on-line analysis appearance of full-automatic potentiometric titration belongs to chemical test appurtenance technical field, has had work efficiency low to current potentiometric titration on-line analysis appearance when the in-service use, uses and lacks the convenience inadequately and lacks the spacing, easily receives the exogenic action to take place to rock, influences the problem of the accuracy of data result, including the shell, be fixed with mutual connection complex HMI man-machine interaction equipment, CPU central processing unit, feed liquor system, ration system, reagent titration system, drainage system, reaction and mixing system, potentiometric detection system and cleaning system on the shell, be provided with stop gear on the top of workstation; the utility model discloses a preset terminal point method, automatic seek terminal point method and semi-automatic method carry out the automatic titration analysis, need not artifical auxiliary operation, and application scope is wider, carries on spacingly through stop gear to the shell for the shell is difficult for receiving exogenic action to produce and rocks, places stability when effectively improving the device and using.

Description

Full-automatic potentiometric titration wet chemistry online analyzer

Technical Field

The utility model belongs to the technical field of the experimental appurtenance of chemistry, concretely relates to wet chemistry on-line analysis appearance is titrated to full-automatic potential.

Background

The chemical assay is a study, and there are many theories and methods in the experimental process, among which, titration analysis is a widely used chemical analysis method, and the commonly used apparatus for titration analysis is a titration analysis device composed of a bracket, a burette and a burette clamp, and with the progress of science and technology, the automatic titration analyzer is widely used.

But current potentiometric titration on-line analysis appearance when in-service use, mostly need the manual work to carry out the auxiliary operation, lead to work efficiency low, it is not convenient enough to use, and the analysis appearance generally directly is placed on the workstation simultaneously, lacks spacingly, easily receives the exogenic action to take place to rock, influences the accuracy of data result.

Therefore, a full-automatic potentiometric titration wet chemistry online analyzer is needed, and the problems that when the existing potentiometric titration online analyzer is used in practice, the existing potentiometric titration online analyzer is low in working efficiency, inconvenient to use and lack of limitation, easy to shake under the action of external force and influence the accuracy of data results are solved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a wet chemistry on-line analysis appearance is titrated to full-automatic electric potential to solve the problem that provides among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a wet chemistry on-line analysis appearance is titrated to full-automatic electric potential, includes the shell, be fixed with interconnect complex HMI human-computer interaction equipment, CPU central processing unit, feed liquor system, ration system, reagent titration system, flowing back system, reaction and mixing system, potentiometric detection system and cleaning system on the shell, the bottom mounting of shell has the workstation, be provided with stop gear on the top of workstation.

The liquid inlet system comprises an in-line valve group, a high-precision liquid inlet pump and a pipeline, wherein the input end of the in-line valve group is connected with a pure water bottle through the pipeline, the output end of the in-line valve group is communicated with the high-precision liquid inlet pump through the pipeline, the quantitative system comprises a three-way valve, a high-precision liquid discharge pump and the pipeline, and the reagent titration system comprises a high-precision injection pump and the pipeline.

It is further worth explaining, drainage system comprises high accuracy flowing back pump, three-way valve and pipeline, reaction and mixing system are including having reaction cup, stirring platform and stirring, the reaction cup is located the top of stirring platform, high accuracy feed liquor pump output passes through pipeline and the inside intercommunication of reaction cup, high accuracy flowing back pump input passes through the three-way valve and the inside intercommunication of reaction cup, the high accuracy flowing back pump output has the waste liquid bottle through the pipeline intercommunication, high accuracy injection pump input passes through the three-way valve and the inside intercommunication of pipeline and reaction cup, high accuracy injection pump output has the reagent bottle through the pipeline intercommunication.

It should be further noted that the potential detection system is composed of an electrode and a potential transmitter, and the cleaning system is composed of a high-precision liquid inlet pump, an in-line valve group, a stirrer, a three-way valve, a liquid discharge pump and a pipeline.

As a preferred embodiment, the limiting mechanism comprises two L-shaped limiting plates fixed to the side face of the top end of the workbench, the two L-shaped limiting plates are arranged at opposite angles of the shell, and a rubber pad is fixed to the side face, close to the shell, of each L-shaped limiting plate.

In a preferred embodiment, the rubber pad is attached to the side surface of the L-shaped limiting plate, and the area of the rubber pad is equal to the area of the side surface of the L-shaped limiting plate.

Compared with the prior art, the utility model provides a pair of wet chemistry on-line analysis appearance is titrated to full-automatic potential includes following beneficial effect at least:

(1) The utility model discloses degree of automation is high, and analytical error is little, simple structure, and non-maintaining cycle is long, and the running cost is low. Can replace the import, the utility model discloses wide use in chemical industry, industrial and mining enterprise, sewage treatment trade, surface water monitoring etc. automatic analysis need not artifical auxiliary operation, effectively improves work efficiency.

(2) Through placing the shell in two L shape limiting plates that are the diagonal arrangement to carry on spacingly through L shape limiting plate to the shell, make the shell be difficult for receiving the exogenic action to produce and rock, place stability when effectively improving the device and use, and then improve the precision of device analysis data.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;

FIG. 3 is a schematic diagram of the system structure of the present invention;

fig. 4 is a schematic diagram of the overall analysis process structure of the present invention.

In the figure: 1. a high precision syringe pump; 2. a three-way valve; 3. a high-precision drain pump; 4. a stirring table; 5. a reaction cup; 6. a high-precision liquid inlet pump; 7. an inline valve block; 8. a housing; 9. a work table; 10. a limiting mechanism; 101. an L-shaped limiting plate; 102. a rubber pad; 12. a liquid inlet system; 13. a dosing system; 14. a reagent titration system; 15. a drainage system; 16. a reaction and agitation system; 17. a potential detection system; 18. cleaning the system; 19. a pure water bottle; 20. a waste liquid bottle; 21. and (4) reagent bottles.

Detailed Description

The present invention will be further described with reference to the following examples.

In order to make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, the following will combine the drawings of the embodiments of the present invention to clearly and completely describe the technical scheme of the embodiments of the present invention, and obviously, the described embodiments are a part of the embodiments of the present invention, rather than all embodiments, and based on the described embodiments of the present invention, all other embodiments obtained by the ordinary skilled person in the art on the premise of not needing creative work all belong to the scope of protection of the present invention.

The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention. The condition in the embodiment can be according to concrete condition do further adjustment the utility model discloses a it is right under the design prerequisite the utility model discloses a simple improvement of method all belongs to the utility model discloses the scope of requiring protection.

Referring to fig. 1-4, the utility model provides a full-automatic electrochemical titration wet chemistry on-line analyzer, which comprises a shell 8, wherein the shell 8 is fixed with an HMI man-machine interaction device, a CPU, a liquid inlet system 12, a quantitative system 13, a reagent titration system 14, a liquid discharge system 15, a reaction and stirring system 16, an electric potential detection system 17 and a cleaning system 18 which are mutually connected and matched, the bottom end of the shell 8 is fixed with a workbench 9, and the top end of the workbench 9 is provided with a limiting mechanism 10; when the device is used, liquid to be analyzed is pumped into a quantitative system 13 through a liquid inlet system 12, liquid titration is carried out through a reagent titration system 14, the liquid is matched through a liquid discharge system 15, a reaction and stirring system 16, a potential detection system 17 and a cleaning system 18, a potentiometric titration method is adopted, a preset end point method, an automatic end point searching method and a semi-automatic method are provided, potential pre-control points are arranged, an instrument quickly drops before reaching the potential pre-control points, an instrument slowly drops before reaching the potential pre-control points, and the potential near the titration end point generates leap, the instrument automatically judges the titration end point through a first-order derivative, a plurality of end points exist in some substances, the end point can be manually determined through the semi-automatic method, then the determined end point is input into the instrument, the instrument is used as the titration end point, automatic analysis is carried out, manual auxiliary operation is not needed, the analysis method which can be realized by a laboratory can be realized by the instrument, the method which cannot be realized by the laboratory can be realized by the instrument, and the application range is wider.

The liquid inlet system 12 comprises an in-line valve group 7, a high-precision liquid inlet pump 6 and a pipeline, the input end of the in-line valve group 7 is connected with a pure water bottle 19 through the pipeline, the output end of the in-line valve group 7 is communicated with the high-precision liquid inlet pump 6 through the pipeline, the quantifying system 13 comprises a three-way valve 2, the high-precision liquid discharge pump 3 and the pipeline, the reagent titration system 14 comprises a high-precision injection pump 1 and the pipeline, the liquid discharge system 15 comprises the high-precision liquid discharge pump 3, the three-way valve 2 and the pipeline, the reaction and stirring system 16 comprises a reaction cup 5, a stirring table 4 and a stirrer, the reaction cup 5 is positioned at the top end of the stirring table 4, the output end of the high-precision liquid inlet pump 6 is communicated with the interior of the reaction cup 5 through the pipeline, the input end of the high-precision liquid discharge pump 3 is communicated with the interior of the reaction cup 5 through the three-way valve 2, the output end of the high-precision liquid discharge pump 1 is communicated with the interior of the reaction cup 5 through the pipeline, the output end of the high-precision injection pump 1 is communicated with the reagent bottle 21 through the pipeline, the potential detection system 17 comprises an electrode and a potential transmitter, a cleaning system 18 comprises the high-precision liquid inlet pump 6, the high-precision liquid inlet pump 7, the in-precision liquid discharge pump 7, the in-line and the pipeline 2, the three-way valve 2, the pipeline 2; when the system works specifically, sample liquid is pumped into a high-precision liquid inlet pump 6 through an in-line valve group 7, quantitative liquid is controlled to be conveyed into a reaction cup 5 through the high-precision liquid inlet pump 6, stirring reaction is carried out through a stirring table 4, waste materials are conveyed into a waste liquid bottle 20 through a high-precision liquid discharge pump 3 and a three-way valve 2 after reaction, reagents are respectively conveyed into a reagent bottle 21 through a high-precision injection pump 1, the high-precision reagent pump, the three-way valve, the in-line valve group, the high-precision liquid inlet pump, the liquid discharge pump, the stirring table and a potential detection system are uniformly controlled by a CPU, the CPU is monitored by an HMI device, and start stop, instrument test, analysis interval time, analysis process flow selection and the like are carried out through human-machine interaction through the HMI device; the operation result data is displayed on the HMI equipment and the data inquiry is analyzed historically. And the CPU running program is written according to the corresponding material analysis process flow.

The limiting mechanism 10 comprises L-shaped limiting plates 101 fixed with the side face of the top end of the workbench 9, the L-shaped limiting plates 101 are provided with two diagonal positions distributed on the shell 8, and rubber pads 102 are fixed on the side faces, close to the shell 8, of the L-shaped limiting plates 101; when the device is used, the shell 8 is placed into the two L-shaped limiting plates 101 which are arranged diagonally, so that the shell 8 is limited through the L-shaped limiting plates 101, the shell 8 is not prone to shaking caused by external force, the placing stability of the device is effectively improved when the device is used, and the accuracy of analysis data of the device is improved.

The rubber pad 102 is attached to the side face of the L-shaped limiting plate 101, and the area of the rubber pad 102 is equal to that of the side face of the L-shaped limiting plate 101; during specific work, the arranged rubber pad 102 increases the friction force for limiting the shell 8 and protects the corners of the shell 8.

The instrument supports various communication modes such as Ethernet, modbusRTU and the like, 2-4 paths of current output can be realized, and remote control and data remote transmission can be realized; the electrodes are of various types, and the electrodes are selected according to the property and the content of an analysis substance, and an in-line valve channel can be added to analyze multiple paths of similar samples in turn.

The scheme has the following working processes: the method comprises the steps of pumping sample liquid into a high-precision liquid inlet pump 6 through an in-line valve group 7, controlling quantitative liquid to be conveyed into a reaction cup 5 through the high-precision liquid inlet pump 6, carrying out stirring reaction through a stirring table 4, conveying waste materials into a waste liquid bottle 20 through a high-precision liquid discharge pump 3 and a three-way valve 2 after reaction, conveying reagents into a reagent bottle 21 through a high-precision injection pump 1, arranging a high-precision reagent pump, a three-way valve, an in-line valve group, a high-precision liquid inlet pump, a liquid discharge pump, a stirring table and a potential detection system by a CPU (central processing unit), monitoring the CPU by an HMI (human machine interface) device, adopting a potentiometric titration method, a preset end point method, an automatic end point finding method and a semi-automatic method, wherein potential pre-control points are arranged, the end point can be manually determined by the semi-automatic method before reaching the potentiometric pre-control points, the instrument slowly drops before reaching the potentiometric pre-control points, the potential near the titrating end point generates leap, the instrument automatically judges the titrating end point by a first-point, certain substances have a plurality of end points, the end point can be manually determined by the semi-automatic end point, the instrument, the shell analysis method can be used for realizing that the shell can not be placed by using a shell of a shell 8, and the shell can be placed in a relatively wide angle analysis room, so that the shell can be effectively placed by using the shell can not be placed by using a limiting plate 8, and the shell can be effectively placed by using the shell.

Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art, and the use of the term "including" or "comprising" in the present application shall mean that the element or item preceding the term covers the element or item listed after the term and its equivalents, but does not exclude other elements or items, and the term "connected" or "connected" is not limited to physical or mechanical connections, and may include electrical connections, whether direct or indirect, "upper", "lower", "left", "right", etc. merely indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may be changed accordingly.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a wet chemistry on-line analysis appearance is titrated to full-automatic electric potential, includes shell (8), its characterized in that, be fixed with interconnect complex HMI human-computer interaction device, CPU central processing unit, inlet liquid system (12), ration system (13), reagent titration system (14), flowing back system (15), reaction and mixing system (16), potentiometric detection system (17) and cleaning system (18) on shell (8), the bottom mounting of shell (8) has workstation (9), be provided with stop gear (10) on the top of workstation (9).

2. The full-automatic potentiometric titration wet chemistry online analyzer according to claim 1, wherein the liquid inlet system (12) comprises an in-line valve group (7), a high-precision liquid inlet pump (6) and a pipeline, the input end of the in-line valve group (7) is connected with a pure water bottle (19) through the pipeline, the output end of the in-line valve group (7) is communicated with the high-precision liquid inlet pump (6) through the pipeline, the quantifying system (13) comprises a three-way valve (2), a high-precision liquid discharge pump (3) and a pipeline, and the reagent titration system (14) comprises a high-precision injection pump (1) and a pipeline.

3. The full-automatic potentiometric titration wet chemistry online analyzer according to claim 2, wherein the liquid discharge system (15) is composed of a high-precision liquid discharge pump (3), a three-way valve (2) and a pipeline, the reaction and stirring system (16) comprises a reaction cup (5), a stirring table (4) and a stirrer, the reaction cup (5) is located at the top end of the stirring table (4), the output end of the high-precision liquid discharge pump (6) is communicated with the inside of the reaction cup (5) through the pipeline, the input end of the high-precision liquid discharge pump (3) is communicated with the inside of the reaction cup (5) through the three-way valve (2), the output end of the high-precision liquid discharge pump (3) is communicated with a waste liquid bottle (20) through the pipeline, the input end of the high-precision injection pump (1) is communicated with the inside of the reaction cup (5) through the three-way valve (2) and the pipeline, and the output end of the high-precision injection pump (1) is communicated with a reagent bottle (21) through the pipeline.

4. The full-automatic potentiometric titration wet chemistry online analyzer according to claim 3, wherein the potentiometric detection system (17) is composed of electrodes and potentiometric transmitters, and the cleaning system (18) is composed of a high-precision liquid inlet pump (6), an in-line valve group (7), a stirrer, a three-way valve (2), a liquid outlet pump (3) and a pipeline.

5. The full-automatic online electrochemical titration wet chemistry analyzer according to claim 4, wherein the limiting mechanism (10) comprises L-shaped limiting plates (101) fixed to the top side of the workbench (9), the L-shaped limiting plates (101) are provided with two and distributed at opposite angles of the housing (8), and rubber pads (102) are fixed to the side, close to the housing (8), of the L-shaped limiting plates (101).

6. The full-automatic potentiometric titration wet chemistry online analyzer according to claim 5, wherein the rubber gasket (102) is attached to the side surface of the L-shaped limiting plate (101), and the area of the rubber gasket (102) is equal to the area of the side surface of the L-shaped limiting plate (101).