CN217304999U

CN217304999U - Auxiliary device for full-sealed electrochemical detection

Info

Publication number: CN217304999U
Application number: CN202220895324.6U
Authority: CN
Inventors: 张瑶; 吴龙国; 张芦燕
Original assignee: Ningxia Hui Autonomous Region Food Inspection Research Institute
Current assignee: Ningxia Hui Autonomous Region Food Inspection Research Institute
Priority date: 2022-04-18
Filing date: 2022-04-18
Publication date: 2022-08-26
Anticipated expiration: 2032-04-18

Abstract

The utility model provides a totally enclosed auxiliary device for electrochemical detection belongs to the electrochemistry and detects technical field. The auxiliary device for the full-sealed electrochemical detection comprises a cup body, a sample inlet pipe for a sample to be detected and a buffer solution feed pipe. The cup body comprises a cup body and a cup cover, and the cup cover is arranged on the cup body. At least two electrode inserting tubes are arranged on the cup body, and the distance between every two adjacent electrode inserting tubes is equal. The sample inlet pipe of the sample to be detected penetrates through the cup cover and extends into the cup body. The sample inlet pipe of the sample to be detected is provided with a first control valve. The buffer solution feed pipe passes through the cup cover and extends into the cup body. And a second control valve is arranged on the buffer solution feeding pipe. The device is convenient to use, and the whole electrochemical analysis process is in relatively inclosed environment, has guaranteed the precision of detection, and because electrode insert tube evenly distributed is on the cup, and the electrode inserts the back, and the cup atress is balanced, has reduced the risk that the cup emptyd, reduces the safety risk.

Description

Auxiliary device for full-sealed electrochemical detection

Technical Field

The utility model belongs to the technical field of the electrochemistry detects, in particular to totally enclosed auxiliary device for electrochemical detection.

Background

Electrochemical analysis is an analytical method established based on the electrochemical properties of a substance in solution and on an electrode. The measurement signal of the electrochemical analysis is an electric quantity signal, a potential signal, a current signal, a conductance signal and the like, can be directly recorded without signal conversion, is known as an accurate trace analysis method, and has the advantages of high sensitivity, good selectivity, convenient operation, high analysis speed, small sample consumption, capability of detecting various trace elements simultaneously and the like.

Electrochemical analysis methods have been increasingly used in the detection of trace or trace amounts in various fields, for example, detection of heavy metal content in wastewater or soil by electrochemical analysis, detection of pesticide residue in Chinese medicinal materials or foods by electrochemical analysis, detection of gene sequences by electrochemical analysis, and the like. At present, the electrochemical detection process in a laboratory is mainly completed by using a beaker, a sample to be detected and a buffer solution are added into the beaker, a rubber plug with a hole is left on a plug of the beaker, and then a detection electrode, a reference electrode and an auxiliary electrode are inserted to complete the electrochemical detection. The detection process has two problems, one is that the sealing performance is poor, and the requirement of high-precision detection is difficult to meet; secondly, after the three-electrode system is installed, the stress imbalance is easy to occur, the beaker is toppled over, the detection solution is poured out, and potential safety hazards exist.

Disclosure of Invention

Based on this, the invention provides an auxiliary device for full-sealed electrochemical detection, which aims to solve the technical problems that the sealing performance is poor and a beaker is easy to topple over when electrochemical detection is completed by the beaker in a laboratory in the prior art.

The utility model provides an above-mentioned technical problem's technical scheme as follows:

an auxiliary device for full-sealed electrochemical detection, comprising:

the cup body comprises a cup body and a cup cover, and the cup cover is arranged on the cup body; at least two electrode insertion tubes are arranged on the cup body, and the distance between every two adjacent electrode insertion tubes is equal;

the sample inlet pipe for the sample to be detected penetrates through the cup cover and extends into the cup body; a first control valve is arranged on the sample inlet pipe of the sample to be detected; and

the buffer solution feeding pipe penetrates through the cup cover and extends into the cup body; and a second control valve is arranged on the buffer solution feeding pipe.

Preferably, the auxiliary device for the totally enclosed electrochemical detection further comprises a mixer, wherein a discharge end of the mixer extends into the cup body, and a feed end of the mixer is connected with a discharge end of the sample inlet pipe for the sample to be detected and a discharge end of the buffer solution feed pipe.

Preferably, an elastic sealing rubber ring is arranged at the end part of the electrode insertion tube, an electrode insertion hole is formed in the elastic sealing rubber ring, and the aperture of the electrode insertion hole is smaller than the diameter of the electrode.

Preferably, the end of the electrode insertion tube is also detachably provided with a cover body on which the elastic sealing rubber ring is arranged.

Preferably, the cup cover is detachably covered on the cup body.

Preferably, an exhaust pipe is further arranged on the cup cover.

Preferably, the cup cover is further provided with an air inlet pipe.

Preferably, the cup body and the cup cover are opaque.

Compared with the prior art, the utility model discloses at least, following advantage has:

the electrode inserting cup comprises a cup body and a cup cover, wherein the cup body is provided with at least two electrode inserting tubes for inserting electrodes, and the cup cover is provided with a sample feeding tube for a sample to be detected and a buffer solution feeding tube for adding the sample to be detected and the buffer solution into the cup body. When the content of a certain substance in a sample to be detected is detected by an electrochemical analysis method, firstly, a sample solution to be detected is prepared, a proper buffer solution is selected, the sample solution to be detected is measured according to requirements and added into a sample inlet pipe of the sample to be detected, the buffer solution is measured and added into a buffer solution inlet pipe, the first control valve and the second control valve are synchronously opened, so that the buffer solution and the sample solution to be detected are synchronously added into the cup body and are uniformly mixed. And (3) selecting a proper detection electrode, a proper reference electrode and a proper auxiliary electrode, and inserting the detection electrode, the proper reference electrode and the proper auxiliary electrode into the electrode insertion tube to finish the electrochemical analysis process. The device is convenient to use, the whole electrochemical analysis process is in a relatively closed environment, the detection precision is ensured, and the electrode insertion tubes are uniformly distributed on the cup body, so that after the electrodes are inserted, the cup body is stressed in a balanced manner, the risk of toppling over the cup body is reduced, and the safety risk is reduced.

Drawings

Fig. 1 is a schematic structural diagram of an auxiliary device for full-sealed electrochemical detection according to an embodiment.

FIG. 2 is a cross-sectional view of an embodiment of an auxiliary device for totally enclosed electrochemical detection.

In the figure: the auxiliary device for full-sealed electrochemical detection 10, the cup body 100, the cup body 110, the cup cover 120, the electrode insertion tube 130, the elastic sealing rubber ring 140, the electrode insertion hole 141, the cover 150, the exhaust tube 160, the air inlet tube 170, the sample introduction tube 200 to be detected, the first control valve 210, the buffer solution feed tube 300, the second control valve 310 and the mixer 400.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments and features of the embodiments of the present invention may be combined with each other. The following will combine the drawings of the embodiments of the present invention to further describe the technical solution of the present invention, and the present invention is not limited to the following specific embodiments.

It should be understood that the same or similar reference numerals in the drawings of the embodiments correspond to the same or similar parts. In the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "front", "rear", "left", "right", "top", "bottom", etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the drawings, the description is merely for convenience of description and simplicity of description, but does not indicate or imply that the equipment or components referred to must have specific orientations, be constructed in specific orientations, and be operated, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limitations of the present patent, and those skilled in the art will understand the specific meanings of the terms according to specific situations.

Referring to fig. 1 and fig. 2, in an embodiment, an auxiliary device 10 for full-sealed electrochemical detection is used to assist in completing an electrochemical analysis process, and implement electrochemical detection with guaranteed accuracy and low safety risk. The auxiliary device 10 for the totally enclosed electrochemical test comprises a cup body 100, a sample inlet tube 200 for a sample to be tested and a buffer solution inlet tube 300. The cup body 100 comprises a cup body 110 and a cup cover 120, wherein the cup cover 120 is arranged on the cup body 110. At least two electrode insertion tubes 130 are arranged on the cup body 110, and the distance between two adjacent electrode insertion tubes 130 is equal.

The sample inlet pipe 200 penetrates through the cup cover 120 and extends into the cup body 110. The sample inlet pipe 200 to be tested is provided with a first control valve 210. The buffer solution feeding pipe 300 penetrates through the cap 120 and extends into the cup body 110, and a second control valve 310 is arranged on the buffer solution feeding pipe 300.

When the content of a certain substance in a sample to be detected is detected by using an electrochemical analysis method, firstly, a sample solution to be detected is prepared and a proper buffer solution is selected, the sample solution to be detected is measured and added into the sample inlet pipe 200 of the sample to be detected according to requirements, the buffer solution is measured and added into the buffer solution inlet pipe 300, the first control valve 210 and the second control valve 310 are synchronously opened, so that the buffer solution and the sample solution to be detected are synchronously added into the cup body 100 and are uniformly mixed. And (3) selecting a proper detection electrode, a proper reference electrode and a proper auxiliary electrode, and inserting the detection electrode, the proper reference electrode and the proper auxiliary electrode into the electrode insertion tube 130 to finish the electrochemical analysis process. The device is convenient to use, the whole electrochemical analysis process is in a relatively closed environment, the detection precision is ensured, and the electrode insertion tubes 130 are uniformly distributed on the cup body 100, so that after the electrodes are inserted, the stress of the cup body 100 is balanced, the risk of toppling over the cup body 100 is reduced, and the safety risk is reduced.

In order to further facilitate the operation and improve the accuracy of the electrochemical analysis result, the fully-sealed auxiliary device 10 for electrochemical detection further includes a mixer 400, a discharge end of the mixer 400 extends into the cup body 110, and a feed end of the mixer 400 is connected to a discharge end of the sample inlet tube 200 for the sample to be detected and a discharge end of the buffer solution feed tube 300. The first control valve 210 and the second control valve 310 are synchronously opened, the buffer solution and the sample solution to be detected synchronously enter the mixer 400, and the buffer solution and the sample solution to be detected enter the cup body 100 after being fully mixed, so that the mixing step of the sample to be detected and the buffer solution is saved, the operation is convenient, and the efficiency is improved. For example, the mixer 400 may be a straight pipe having baffles therein, or may be a serpentine pipe.

In a preferred embodiment, in order to improve the tightness and independence of the electrochemical analysis environment, an elastic sealing rubber ring 140 is disposed at an end of the electrode insertion tube 130, an electrode insertion hole 141 is formed in the elastic sealing rubber ring 140, and a diameter of the electrode insertion hole 141 is smaller than a diameter of the electrode. Electrodes (including detection electrodes, reference electrodes and auxiliary electrodes) are inserted into the electrode insertion tube 130 from the electrode insertion holes 141, and the elastic sealing rubber ring 140 is tightly attached to the outer wall of the electrodes, so that the electrodes can be quickly mounted and dismounted, and the sealing performance is ensured.

Further, in order to facilitate cleaning of the fully-sealed electrochemical detection auxiliary device 10, a cover 150 may be detachably provided to an end of the electrode insertion tube 130, and the elastic sealing rubber ring 140 may be provided to the cover 150. For example, the cap body 150 is provided to the end of the electrode insertion tube 130 by a screw structure or a snap structure. When cleaning, the cover body 150 is detached, the liquid in the cup body 100 is poured out, and deionized water is added for cleaning.

Further, the cup cover 120 is detachably covered on the cup body 110, for example, the cup cover 120 is screwed or fastened on the cup body 110, and when cleaning, the cup cover 120 is separated from the cup body 110, and the cup body 110 and the cup cover 120 are respectively cleaned.

In some preferred embodiments, in order to increase the functionality of the fully-sealed electrochemical detection auxiliary device 10, an exhaust pipe 160 is further disposed on the cup cover 120. In some cases, the exhaust pipe 160 may be connected to a negative pressure pump, so that the auxiliary device 10 for full-sealed electrochemical detection is cleaned to maintain a micro negative pressure environment, thereby reducing the harm of gas generated by electrolysis.

Further, the cup cover 120 is further provided with an air inlet pipe 170, and in some cases, an inert gas such as nitrogen is introduced into the totally-enclosed auxiliary device for electrochemical detection 10 through the air inlet pipe 170 and is discharged through the air outlet pipe 160, so that electrochemical analysis and detection under the protection of the inert gas are realized.

In some embodiments, the cup body 110 and the cap 120 are opaque to enable electrochemical analysis to be performed in a dark environment.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An auxiliary device for full-sealed electrochemical detection, comprising:

the cup comprises a cup body and a cup cover, wherein the cup cover is arranged on the cup body; at least two electrode insertion tubes are arranged on the cup body, and the distance between every two adjacent electrode insertion tubes is equal;

2. The auxiliary device for full-sealed electrochemical detection as claimed in claim 1, further comprising a mixer, wherein a discharge end of the mixer extends into the cup body, and a feed end of the mixer is connected to a discharge end of the sample inlet tube to be detected and a discharge end of the buffer solution feed tube.

3. The totally enclosed auxiliary device for electrochemical measurements as defined in claim 1 or 2, wherein the electrode insertion tube has an elastic sealing rubber ring at its end, the elastic sealing rubber ring having an electrode insertion hole, the electrode insertion hole having a diameter smaller than the diameter of the electrode.

4. The totally enclosed auxiliary device for electrochemical detection as defined in claim 3, wherein the electrode insertion tube is further detachably provided at an end thereof with a cover, and the elastic sealing rubber ring is provided on the cover.

5. The fully-sealed auxiliary device for electrochemical detection as claimed in claim 1, wherein said cup cover is detachably fitted to said cup body.

6. The totally enclosed auxiliary device for electrochemical detection as claimed in claim 1, wherein an exhaust pipe is further provided on the cup cover.

7. The hermetically sealed electrochemical test fixture of claim 6 wherein the lid further comprises an inlet manifold.

8. The fully-enclosed electrochemical test aid of claim 1, wherein said cup body and said cup lid are opaque.