Electrochemical detection device

Abstract

The utility model relates to an electrochemical detection device, which belongs to the technical field of electrochemical detection, and is characterized in that a detection switching mechanism comprises a base, a damping pad is arranged at the bottom of the base, a shell is arranged in the base, and a first servo motor is vertically arranged in the base; an output shaft of the first servo motor is fixed to the center position of a detection rotating disc in a penetrating mode through a bolt, the detection rotating disc is installed over the base, and an automatic detection mechanism is fixed to the tail of the base; the automatic detection mechanism comprises a supporting beam, a threaded rod is installed in the supporting beam, the top of the threaded rod is connected with the output end of a second servo motor through a coupler, the second servo motor is fixed to the top of the supporting beam, the threaded rod is connected with a threaded sliding block, and a movable cross beam is arranged at the front end of the threaded sliding block. And a detection electrode group is arranged at the bottom of the movable cross beam. According to the utility model, the electrochemical detection of the solution is realized, and the electrochemical detection efficiency and quality are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrochemical detection, in particular to an electrochemical detection device. Background Art

[0002] An electrochemical detection device is a device that uses electrochemical principles to detect and analyze substances. It can determine the characteristics of the analyte by measuring electrochemical parameters such as current, potential or charge. An electrochemical detection device usually consists of a detection electrode group, an electrolytic sample to be tested, and a potential measurement system. A constant potential is applied between the two electrodes. When the electroactive components pass through the electrode surface, a redox reaction (electrode reaction) occurs. The current and potential generated in the redox reaction are converted into the required electrochemical parameter data, thereby analyzing the ion concentration, gas content, and chemical reaction rate in the solution. It has high sensitivity and strong real-time performance.

[0003] At present, traditional electrochemical detection devices usually pour the solution to be tested into the detection slot for electrolytic reaction during the detection process. In this process, the steps of separating and pouring the solution from the electrode group after the detection is completed are cumbersome, which is not convenient for cleaning the electrode group and the detection slot, and reduces the detection performance of the electrochemical detection device; and the steps of calling the solution to be tested and pouring it into the detection slot usually need to be completed manually, which is time-consuming and labor-intensive, and easily causes contamination of the detection workbench and the detection environment when the solution to be tested is manually extracted, and is easy to cause detection errors; at the same time, the existing electrochemical detection device can only realize the detection of one unit of solution to be tested, and the detection is single, resulting in low detection efficiency and failure to meet the needs of efficient detection. Summary of the invention

[0004] The utility model overcomes the shortcomings of the prior art and provides an electrochemical detection device.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is:

[0006] The utility model provides an electrochemical detection device, which includes a detection switching mechanism and an automatic detection mechanism:

[0007] The detection switching mechanism includes a base, a damping pad is arranged at the bottom of the base, a shell is drawn inside the base, a first servo motor is vertically installed inside the base, an output shaft of the first servo motor is fixed to the center position of the detection turntable by bolts, the detection turntable is installed just above the base, and an automatic detection mechanism is fixed at the tail of the base;

[0008] The automatic detection mechanism includes a support beam, a threaded rod is installed inside the support beam, the top of the threaded rod is connected to the output end of the second servo motor through a coupling, and the second servo motor is fixed to the top of the support beam, the threaded rod is connected to a threaded slider, a moving beam is provided at the front end of the threaded slider, and a detection electrode group is provided at the bottom of the moving beam.

[0009] Furthermore, in a preferred embodiment of the present invention, a plurality of circular grooves are provided above the detection turntable.

[0010] Furthermore, in a preferred embodiment of the present invention, a cup for containing the liquid to be tested is embedded and placed in the circular groove.

[0011] Furthermore, in a preferred embodiment of the present invention, two identical guide rails are symmetrically arranged on the inner side of the support beam.

[0012] Furthermore, in a preferred embodiment of the present invention, the guide rail is connected to a guide rail groove, and the guide rail groove is arranged on both sides of the threaded slider.

[0013] Furthermore, in a preferred embodiment of the present invention, the threaded slider and the movable crossbeam are connected and fixed by a limiting connecting block.

[0014] Furthermore, in a preferred embodiment of the utility model, the limiting connection block is placed in a rectangular limiting hole to achieve limited sliding, and the rectangular limiting hole is opened at the front end of the support beam.

[0015] Furthermore, in a preferred embodiment of the present invention, the detection electrode group is connected to the input end of the potential measurement system.

[0016] Furthermore, in a preferred embodiment of the utility model, a micro liquid pump is installed on the top of the movable beam.

[0017] Furthermore, in a preferred embodiment of the utility model, the micro-liquid pump is connected to an infusion tube, the liquid outlet of the infusion tube passes through the movable crossbeam, and the liquid outlet of the infusion tube and the detection electrode group are both located directly above the cup containing the liquid to be tested.

[0018] The beneficial technical effects of the utility model are:

[0019] If the test solution has been added to the test solution holding cup, the power supply is turned on at this time, so that the detection electrode group is energized, and the second servo motor is started to rotate forward at the same time. The output end of the second servo motor rotates at a uniform speed to drive the threaded rod to rotate synchronously. The threaded rotation between the threaded rod and the threaded slider is coordinated, so that the threaded rod can drive the threaded slider to perform a vertical downward movement inside the support beam when the threaded rod rotates forward at a uniform speed. At this time, the moving beam set at the front end of the threaded slider will also perform a vertical downward movement, so that the detection electrode group at the bottom of the moving beam is uniformly descended and completely immersed in the test solution in the test solution holding cup, so that the detection electrode group can conduct electrical Chemical detection, and generate electrode reaction results or potential difference results through the potential measurement system to achieve the electrochemical detection effect; realize the purpose of intelligent and automatic detection of the target solution to be tested, the detection electrode group can be intelligently controlled to rise and fall according to the detection requirements, so as to make the detection electrode group and the solution to be detected quickly contact and separate, which is convenient for the operator to quickly clean the detection electrode group and the subsequent rapid pouring out of the solution to be detected, solves the problem of inconvenient cleaning caused by the integration of detection electrodes, detection slots and solution to be detected in traditional electrochemical detection devices, and further improves the detection performance and service life of the electrochemical detection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0021] Figure 1 It is a schematic diagram of the overall structure of an electrochemical detection device of the utility model;

[0022] Figure 2 This is a schematic diagram of the internal installation structure of the support beam of the utility model;

[0023] Figure 3 This is a schematic diagram of the installation structure of the first servo motor of the utility model.

[0024] In the figure:

[0025] 1. Base; 2. Damping pad; 3. First servo motor; 4. Detection turntable; 5. Round groove; 6. Detection liquid holding cup; 7. Support beam; 8. Threaded rod; 9. Second servo motor; 10. Threaded slider; 11. Moving beam; 12. Detection electrode group; 13. Guide rail; 14. Guide rail groove; 15. Limit connection block; 16. Rectangular limit hole; 17. Micro liquid pump; 18. Infusion tube. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] In the description of the utility model, the reference to "embodiment", "one embodiment", "some embodiments", or "other embodiments" indicates that the specific features, structures or characteristics described in conjunction with the embodiment are included in at least some embodiments, but not necessarily all embodiments. Multiple occurrences of "embodiment", "one embodiment", or "some embodiments" do not necessarily all refer to the same embodiment. If the specification describes that a component, feature, structure or characteristic "may", "perhaps" or "can" be included, the specific component, feature, structure or characteristic is not necessarily included. If the specification or claim mentions "one" element, it does not mean that there is only one element. If the specification or claim mentions "another" element, it does not exclude the presence of more than one other element. In addition, specific features, structures, functions or characteristics can be combined in one or more embodiments in any suitable manner. For example, the first embodiment can be combined with the second embodiment, as long as the specific features, structures, functions or characteristics associated with the two embodiments are not mutually exclusive.

[0028] In the description of the present invention, unless otherwise specified, the use of ordinal adjectives such as "first", "second", and "third" to describe a common object only refers to different instances of the same object, and does not imply that the objects described in this way must adopt a given order, whether in time, space, order, or any other manner. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances. Example

[0030] like Figure 1 As shown, the present application provides an electrochemical detection device, which includes a detection switching mechanism and an automatic detection mechanism.

[0031] like Figure 1 , 3 As shown, the detection switching mechanism includes a base 1, a damping pad 2 is arranged at the bottom of the base 1, the base 1 has a draw shell inside, a first servo motor 3 is vertically installed inside the base 1, the output shaft of the first servo motor 3 is fixed to the center position of the detection turntable 4 by bolts, the detection turntable 4 is installed directly above the base 1, and an automatic detection mechanism is fixed to the tail of the base 1.

[0032] like Figure 1 , 3 As shown, a plurality of circular grooves 5 are provided above the detection turntable 4 .

[0033] It should be noted that the currently available electrochemical detection devices are usually provided with a detection slot, and detection is achieved by pouring the solution to be tested into the detection slot. Therefore, it is only possible to detect one solution to be tested or a group of samples of one solution to be tested. When it is necessary to complete the detection of multiple solutions to be tested or multiple groups of solution samples, it is necessary to perform detection in batches, which greatly reduces the detection rate and cannot substantially meet the needs of multiple tasks. The detection turntable 4 and the arrangement of the plurality of circular grooves 5 can perform electrolytic detection on a plurality of groups of solution samples to be tested, thereby solving the problem of single quantity detection of traditional electrochemical detection devices and meeting the electrochemical detection requirements of comparative properties or diversified detection; by starting the first servo motor 3, the output shaft of the first servo motor 3 drives the detection turntable 4 to rotate at a fixed angle on the base 1, thereby switching the corresponding circular grooves 5 to be detected to the bottom of the detection electrode group 12 according to the detection requirements, so that the automatic detection mechanism detects the solutions to be tested placed in different circular grooves 5, achieves the purpose of detecting different solution samples to be tested, improves the detection efficiency and quality, and has high flexibility; and the plurality of damping pads 2 arranged at the bottom of the base 1 can enable the electrochemical detection device to be placed stably on the work surface, avoid the shaking phenomenon of the device during detection causing the entire device to move, and improve the detection stability of the device.

[0034] like Figure 1 As shown, a cup 6 for containing the liquid to be tested is embedded in the circular groove 5 .

[0035] It should be noted that when it is necessary to perform electrolytic detection on the solution to be tested, it is only necessary to place the corresponding number of test solution holding cups 6 in the circular groove according to the detection requirements, and the test solution can be automatically extracted into the test solution holding cup 6 through the liquid extraction device on the automatic detection mechanism. On the one hand, it replaces the manual liquid extraction and pipetting operation steps, improves the detection efficiency and the accuracy of adding the test solution, and saves time and effort; on the other hand, it avoids the test solution from accidentally dropping onto the work surface where the electrochemical detection device is placed during manual liquid extraction and pipetting, thereby reducing the pollution of the detection environment, ensuring the cleanliness of the detection environment, and being more humane.

[0036] like Figure 1 , 2 As shown, the automatic detection mechanism includes a support beam 7, a threaded rod 8 is installed inside the support beam 7, the top of the threaded rod 8 is connected to the output end of the second servo motor 9 through a coupling, and the second servo motor 9 is fixed to the top of the support beam 7, the threaded rod 8 is connected to a threaded slider 10, a moving beam 11 is arranged at the front end of the threaded slider 10, and a detection electrode group 12 is arranged at the bottom of the moving beam 11.

[0037] like Figure 1 As shown, the detection electrode group 12 is connected to the input end of the potential measurement system.

[0038] It should be noted that if the test solution has been added to the test solution holding cup 6, the power supply is turned on at this time, so that the detection electrode group 12 is energized, and the second servo motor 9 is started to rotate forward at the same time. The output end of the second servo motor 9 rotates at a uniform speed to drive the threaded rod 8 to rotate synchronously. The threaded rotation between the threaded rod 8 and the threaded slider 10 is coordinated, so that the threaded rod 8 can drive the threaded slider 10 to perform a vertical downward movement inside the support beam 7 when the threaded rod 8 rotates forward at a uniform speed. At this time, the moving beam 11 set at the front end of the threaded slider 10 will also perform a vertical downward movement, so that the detection electrode group 12 at the bottom of the moving beam 11 descends at a uniform speed and is completely immersed in the test solution in the test solution holding cup 6, so that the detection electrode group 12 can perform electrochemical detection on the test solution, and generate electrode reaction results or potential difference results through the potential measurement system to achieve electrochemical detection effect. The detection result is that after the detection is completed, it is only necessary to control the second servo motor 9 to reverse and drive the threaded slider 10 to perform a vertical upward movement, thereby driving the moving crossbeam 11 and the detection electrode group 12 to rise vertically synchronously; the purpose of intelligent and automatic detection of the target solution to be detected is realized, and the detection electrode group 12 can be intelligently controlled to rise and fall according to the detection requirements, so that the detection electrode group 12 can be quickly contacted and separated from the solution to be detected, which is convenient for the operator to quickly clean the detection electrode group 12 and subsequently quickly pour out and use the solution to be detected, avoiding unnecessary cross-interference between the detection electrode group 12 and the solution to be detected, solving the problem of inconvenient cleaning caused by the integration of detection electrodes, detection slots and solution to be detected in traditional electrochemical detection devices, ensuring the cleanliness of the device, and further improving the detection performance and service life of the electrochemical detection device.

[0039] like Figure 1 , 2 As shown, two identical guide rails 13 are symmetrically arranged on the inner side of the support beam 7 .

[0040] like Figure 2 As shown, the guide rail 13 is connected to the guide rail groove 14 , and the guide rail groove 14 is arranged on both sides of the threaded slider 10 .

[0041] like Figure 1 , 2 As shown, the threaded slider 10 and the moving beam 11 are connected and fixed via a limiting connecting block 15 .

[0042] like Figure 2 As shown, the limiting connection block 15 is placed in a rectangular limiting hole 16 to achieve limited sliding, and the rectangular limiting hole 16 is opened at the front end of the support beam 7.

[0043] It should be noted that, during the process of the threaded slider 10 being driven by the threaded rod 8 to rotate and perform vertical ascent and descent, the guide grooves 14 opened on both sides of the threaded slider 10 are limited to slide on the guide rails 13, which can make the threaded slider 10 perform vertical lifting and lowering movements more smoothly inside the support beam 7, avoid vibration when the threaded slider 10 is lifted and lowered, and improve the lifting and lowering stability of the moving beam 11 and the detection electrode group 12; at the same time, in order to further ensure the lifting and lowering stability between the moving beam 11 and the support beam 7, and because the threaded slider 10 and the moving beam 11 are connected and fixed by the limiting connecting block 15, the threaded slider 10 can be lifted and lowered. The limit connection block 15 is allowed to perform limit lifting and sliding in the rectangular limit hole 16 opened at the front end of the support beam 7. On the one hand, it ensures that the threaded slider 10 inside the support beam 7 can drive the moving beam 11 outside the support beam 7 to perform lifting and lowering movements when it is lifted and lowered, thereby avoiding operation interference and improving the operation performance of the device; on the other hand, it can enable the threaded slider 10 to drive the moving beam 11 to perform stable limit lifting and lowering sliding. Under the setting of the guide rail 13 and the guide rail groove 14, the lifting and lowering stability of the moving beam 11 and the detection electrode group 12 is further improved, avoiding the situation of shaking left and right during lifting and lowering, thereby reducing the occurrence rate of electrochemical detection errors caused by operation failures, and having high reliability.

[0044] like Figure 1 As shown, a micro liquid pump 17 is installed on the top of the moving beam 11.

[0045] like Figure 1 As shown, the micro-pump 17 is connected to the infusion tube 18, the outlet of the infusion tube 18 passes through the movable crossbeam 11, and the outlet of the infusion tube 18 and the detection electrode group 12 are both located directly above the test liquid holding cup.

[0046] It should be noted that, before the detection, the conventional electrochemical detection device usually requires manual extraction and pipetting of the solution to be detected into the detection slot. This method has a slow extraction and pipetting rate, high manual output cost, time-consuming and labor-intensive, and may result in manual operation errors. In addition, manual pipetting may cause the solution to be detected to drip onto the detection work surface, thereby contaminating the detection environment, and greatly reducing the detection efficiency and quality. When it is necessary to add and extract the solution, the extraction port of the infusion tube 18 is connected to a special container containing the solution to be detected, and the micro-pump 17 is started to pump a preset amount of the solution to be detected in the special container. and extraction at a preset rate. Since the liquid outlet of the infusion tube 18 is located just above the test liquid holding cup 6, the extracted test solution drips into the test liquid holding cup 6 through the other end of the infusion tube 18, thereby realizing the automatic addition and extraction effect of the test solution, which can make the test solution accurately extracted, avoid detection errors and waste, replace the traditional manual extraction and pipetting steps, further improve the electrochemical detection rate, save time and effort; at the same time, ensure the cleanliness of the detection work surface, greatly reduce the probability of contamination of the work surface, and make the extraction and pipetting more intelligent and humane, with high reliability.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the utility model.

Claims

1. An electrochemical detection device, comprising a detection switching mechanism and an automatic detection mechanism, characterized in that: The detection switching mechanism includes a base, a damping pad is arranged at the bottom of the base, a shell is drawn inside the base, a first servo motor is vertically installed inside the base, an output shaft of the first servo motor is fixed to the center position of the detection turntable by bolts, the detection turntable is installed just above the base, and an automatic detection mechanism is fixed at the tail of the base; The automatic detection mechanism includes a support beam, a threaded rod is installed inside the support beam, the top of the threaded rod is connected to the output end of the second servo motor through a coupling, and the second servo motor is fixed to the top of the support beam, the threaded rod is connected to a threaded slider, a moving beam is provided at the front end of the threaded slider, and a detection electrode group is provided at the bottom of the moving beam.

2. An electrochemical detection device according to claim 1, characterized in that: A plurality of circular grooves are arranged above the detection turntable.

3. An electrochemical detection device according to claim 2, characterized in that: A cup for holding the liquid to be tested is embedded in the circular groove.

4. An electrochemical detection device according to claim 1, characterized in that: Two identical guide rails are symmetrically arranged on the inner side of the support beam.

5. An electrochemical detection device according to claim 4, characterized in that: The guide rail is connected to the guide rail groove, and the guide rail groove is arranged on both sides of the threaded slider.

6. An electrochemical detection device according to claim 1, characterized in that: The threaded slider is connected and fixed to the movable crossbeam via a limiting connecting block.

7. An electrochemical detection device according to claim 6, characterized in that: The limiting connection block is placed in the rectangular limiting hole to achieve limited sliding, and the rectangular limiting hole is opened at the front end of the support beam.

8. An electrochemical detection device according to claim 1, characterized in that: The detection electrode group is connected to the input end of the potential measurement system.

9. An electrochemical detection device according to claim 1, characterized in that: A micro liquid pump is installed on the top of the moving crossbeam.

10. An electrochemical detection device according to claim 9, characterized in that: The micro-liquid pump is connected to an infusion tube, the liquid outlet of the infusion tube passes through the movable crossbeam, and the liquid outlet of the infusion tube and the detection electrode group are both located directly above the test liquid containing cup.

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