Intelligent electrochemical sensor device for detecting nitrite

Abstract

The invention relates to the technical field of nitrite detection, and discloses an intelligent electrochemical sensor device for detecting nitrite, the intelligent electrochemical sensor device comprises a workbench, the upper surface of the workbench is provided with a material loading assembly, and the material loading assembly comprises a bracket. According to the invention, the whole process from test tube transfer, sensor body insertion detection to reset after detection and test tube switching is completed through cooperation of motor driving and a precision mechanical structure, and frequent manual sensor position adjustment or sample replacement is not needed, so that manual operation errors are reduced, and the manual labor intensity is reduced; an operator only needs to place a test tube filled with a sample on the bracket, the equipment can automatically complete the subsequent detection process, the convenience and the automation degree of detection operation are improved, the dependence on professional skills of the operator is reduced, meanwhile, after the equipment completes detection, the sensor body is moved away from the upper portion of the test tube, the sample is prevented from dripping, and the detection efficiency is improved. And subsequent sample pollution is avoided.

Description

TECHNICAL FIELD

[0001] The application relates to a nitrite detection technology field, in particular to an intelligent electrochemical sensor device for detecting nitrite. BACKGROUND

[0002] The nitrite is a kind of inorganic compound, common sodium nitrite and potassium nitrite, appearance is mostly white or light yellow powder, easy to dissolve in water, widely exists in food processing, industrial production and nature, in nature, nitrite is an intermediate product of nitrogen cycle, exists in soil, water and plants, daily diet needs to pay attention to control processing food intake, avoid excessive contact.

[0003] At present, the detection end of most detection devices is continuously located above the test tube, after the detection of a single sample is completed, the residual liquid is easy to drop into the next sample to be detected, causing sample pollution, therefore, the application provides an intelligent electrochemical sensor device for detecting nitrite. SUMMARY

[0004] (I) technical problems solved

[0005] In view of the defects of the prior art, the application provides an intelligent electrochemical sensor device for detecting nitrite, which solves the problem that the detection end of most detection devices is continuously located above the test tube, after the detection of a single sample is completed, the residual liquid is easy to drop into the next sample to be detected, causing sample pollution.

[0006] (II) technical scheme

[0007] In order to achieve the above object, the application is implemented by the following technical scheme: an intelligent electrochemical sensor device for detecting nitrite, comprising a workbench, the upper surface of the workbench is provided with a loading assembly, the loading assembly comprises a bracket, the bracket is rotationally connected with the upper surface of the workbench, a plurality of circumferentially distributed placing grooves are formed in the bracket, test tubes are placed in the placing grooves, the upper surface of the workbench is provided with a detection assembly, the detection assembly comprises a mounting plate, the mounting plate is fixedly connected with the upper surface of the workbench, a guide hole is formed in the surface of the mounting plate, the region of the guide hole in the middle of the mounting plate is in a V shape, a positioning rod is slidably inserted into the guide hole, one end of the positioning rod is fixedly connected with a sliding rod, the lower end of the sliding rod is fixedly connected with a sensor body, when the sliding rod is located at the bottom of the V-shaped guide hole, the sensor body is inserted into the test tube, when the sliding rod is located at the top of the V-shaped guide hole, the sensor body is separated from the test tube, the whole process is completed by cooperation of motor driving and precision mechanical structure, manual adjustment of sensor position or replacement of samples is not required, human operation errors are reduced, labor intensity is reduced, an operator only needs to place test tubes containing samples on the bracket, the device can automatically complete the subsequent detection process, the convenience and automation degree of detection operation are improved, the dependence on professional skills of the operator is reduced, meanwhile, after the detection is completed, the sensor body is moved away from above the test tube, sample dripping is avoided, and subsequent sample pollution is avoided.

[0008] Preferably, a sleeve block is horizontally and slidably connected to the mounting plate, a supporting rod is fixedly connected to one side of the sleeve block close to the sliding rod, a limiting sleeve is fixedly connected to one end of the supporting rod away from the sleeve block, and the sliding rod slides with the inner wall of the limiting sleeve.

[0009] Preferably, a sliding groove is formed in the surface of the mounting plate, a sliding block is fixedly connected to the inner wall of the sleeve block, and the sliding block slides with the inner wall of the sliding groove.

[0010] Preferably, two symmetrically arranged stabilizing blocks are fixedly connected to one side of the mounting plate away from the sliding rod, a guide rod is fixedly connected to one side of the two stabilizing blocks close to each other, a control rod is arranged on one side of the mounting plate close to the guide rod, a sliding hole is formed in the surface of the control rod, the guide rod slidably connects with the control rod through the sliding hole, a vertical limiting hole is formed in the surface of the control rod, and one end of the positioning rod away from the sliding rod extends into the sliding hole.

[0011] Preferably, two symmetrically arranged protrusions are fixedly connected to one side of the mounting plate close to the stabilizing blocks, an adjusting rod is rotationally connected to the inner wall of the protrusions, threads are formed in the surface of the adjusting rod between the two protrusions, a threaded hole is formed in the surface of the control rod, and the adjusting rod is threadedly connected with the control rod through the threaded hole.

[0012] Preferably, the side close to the protrusion of the mounting plate is fixedly connected with a mounting seat, the inner wall of the mounting seat is fixedly connected with a servo motor, the driving end of the servo motor is fixedly connected with the shaft of the adjusting rod, the adjusting rod is driven by the servo motor, the sensor body is accurately controlled to move along the V-shaped guide hole and is inserted into the test tube, the position of the sensor in the solution is ensured to be consistent each time of detection, the accuracy and repeatability of the detection result are improved, the detection error is reduced, and the detection data is reliable.

[0013] Preferably, the lower surface of the workbench is fixedly connected with a supporting leg, the supporting leg is in a bent shape, the bent supporting leg of the lower surface of the workbench provides stable support, effectively reduces the shaking of the equipment during detection, avoids the position deviation of the sensor inserted into the solution of the test tube due to shaking, and controls the fluctuation of the detection data in a very small range.

[0014] Preferably, the lower surface of the workbench is fixedly connected with a driving motor, the driving end of the driving motor penetrates through the workbench and is fixedly connected with the shaft of the bracket, the bracket is circumferentially provided with a plurality of placing grooves, the test tube is accurately transferred by the driving motor and the bracket, continuous and rapid detection can be realized, compared with the traditional single sample detection mode, the detection work efficiency is effectively improved, a large number of nitrite samples can be detected in a short time, the device is suitable for scenes such as food processing enterprises and environmental protection monitoring stations that need to detect the content of nitrite in batches, the detection period is greatly shortened, and the work efficiency is improved.

[0015] Preferably, the side close to the sensor body of the mounting plate is provided with two symmetrically arranged cleaning assemblies, after the cleaning design is adopted, the service life of the sensor is effectively prolonged, the replacement frequency of the sensor is reduced, the equipment maintenance cost and downtime are reduced, and the long-term stable detection work is ensured.

[0016] Preferably, the cleaning assembly comprises a supporting plate, the supporting plate is fixedly connected with the side close to the sensor body of the mounting plate, and the upper surface of the supporting plate is fixedly connected with cleaning bristles, after single detection or continuous detection for a preset number of times, the sensor body can be automatically moved to the cleaning assembly, the cleaning bristles on the supporting plate can timely clean the residual solution on the surface of the sensor, the residual nitrite solution is prevented from corroding the sensor, and the detection precision is prevented from being reduced due to the influence of the residual liquid on the electrode performance of the sensor.

[0017] In summary, the technical effects and advantages of the present application are as follows:

[0018] 1. In this invention, the entire process, from test tube transport and sensor insertion to detection and reset after detection, and test tube switching, is completed by motor drive and precision mechanical structure. There is no need for frequent manual adjustment of sensor position or sample replacement, reducing human error and labor intensity. Operators only need to place the test tube containing the sample on the tray, and the equipment can automatically complete the subsequent detection process, improving the convenience and automation of the detection operation and reducing the dependence on the professional skills of the operator. At the same time, after the equipment completes the detection, it removes the sensor body from above the test tube to avoid sample dripping and subsequent sample contamination.

[0019] 2. In this invention, after a single test or after a preset number of consecutive tests, the sensor body can automatically move to the cleaning component. The cleaning bristles on the tray can promptly remove residual solution from the sensor surface, preventing residual nitrite solution from corroding the sensor and preventing the detection accuracy from decreasing due to residual liquid affecting the sensor electrode performance. With this cleaning design, the service life of the sensor is effectively extended, the frequency of sensor replacement is reduced, equipment maintenance costs and downtime are reduced, and the long-term stable operation of the testing work is ensured.

[0020] 3. In this invention, the bracket has multiple placement slots distributed around its circumference. With the help of a drive motor, the bracket can accurately transport test tubes, enabling continuous and rapid testing. Compared with the traditional method of testing one sample at a time, this method effectively improves the efficiency of testing and can complete the testing of a large number of nitrite samples in a short time. It is suitable for food processing enterprises, environmental monitoring stations and other scenarios that require batch testing of nitrite content, greatly shortening the testing cycle and improving work efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of an intelligent electrochemical sensor device for detecting nitrite according to the present invention.

[0022] Figure 2 This invention relates to an intelligent electrochemical sensor device for detecting nitrite. Figure 1 A schematic diagram of the structure at point A;

[0023] Figure 3 This invention relates to an intelligent electrochemical sensor device for detecting nitrite. Figure 1 A schematic diagram of the structure at point B;

[0024] Figure 4 This is a bottom view schematic diagram of the intelligent electrochemical sensor device for detecting nitrite according to the present invention;

[0025] Figure 5 This invention relates to an intelligent electrochemical sensor device for detecting nitrite. Figure 3 A schematic diagram of the structure at point C;

[0026] Figure 6 Figure 1 is a schematic diagram of a rear view structure of an intelligent electrochemical sensor device for detecting nitrite according to the present application;

[0027] Figure 7 Figure 2 is a schematic diagram of a partial exploded structure of a detection assembly in the intelligent electrochemical sensor device for detecting nitrite according to the present application.

[0028] In the figure: 1, workbench; 2, supporting leg; 3, test tube; 4, detection assembly; 41, mounting plate; 42, guide hole; 43, sleeve block; 44, sliding groove; 45, supporting rod; 46, limiting sleeve; 47, sliding rod; 48, sensor body; 49, positioning rod; 410, control rod; 411, limiting hole; 412, threaded hole; 413, sliding hole; 414, sliding block; 415, mounting seat; 416, servo motor; 417, protruding block; 418, adjusting rod; 419, stabilizing block; 420, guide rod; 5, material loading assembly; 51, bracket; 52, driving motor; 6, cleaning assembly; 61, supporting plate; 62, cleaning brush. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0030] REFERENCE Figures 1-7The illustrated intelligent electrochemical sensor device for detecting nitrite comprises a workbench 1, the upper surface of the workbench 1 is provided with a carrier assembly 5, the carrier assembly 5 comprises a bracket 51, the bracket 51 is rotationally connected with the upper surface of the workbench 1, a plurality of circumferentially distributed placing grooves are formed in the bracket 51, test tubes 3 are placed in the placing grooves, the upper surface of the workbench 1 is provided with a detection assembly 4, the detection assembly 4 comprises a mounting plate 41, the mounting plate 41 is fixedly connected with the upper surface of the workbench 1, guide holes 42 are formed in the surface of the mounting plate 41, the guide holes 42 are "V"-shaped in the region of the middle part of the mounting plate 41, a positioning rod 49 is slidingly inserted into the guide holes 42, one end of the positioning rod 49 is fixedly connected with a sliding rod 47, the lower end of the sliding rod 47 is fixedly connected with a sensor body 48, when the sliding rod 47 is located at the bottom of the "V"-shaped guide hole 42, the sensor body 48 is inserted into the test tube 3, when the sliding rod 47 is located at the top of the "V"-shaped guide hole 42, the sensor body 48 is separated from the test tube 3, the whole process is completed by cooperation of motor driving and precision mechanical structure, manual frequent manual adjustment of sensor position or replacement of samples is not required, human operation errors are reduced, labor intensity is reduced, an operator only needs to place the test tube 3 containing samples on the bracket 51, the equipment can automatically complete the subsequent detection process, the convenience and automation degree of detection operation are improved, the dependence on professional skills of the operator is reduced, meanwhile, after the equipment completes detection, the sensor body 48 is moved away from above the test tube 3, sample dripping is avoided, and subsequent sample pollution is avoided.

[0031] Wherein, the mounting plate 41 is horizontally slidingly connected with a sleeve block 43, the sleeve block 43 is fixedly connected with a supporting rod 45 on the side close to the sliding rod 47, the supporting rod 45 is fixedly connected with a limiting sleeve 46 on the end away from the sleeve block 43, and the sliding rod 47 slides with the inner wall of the limiting sleeve 46.

[0032] Wherein, the surface of the mounting plate 41 is provided with a sliding groove 44, the inner wall of the sleeve block 43 is fixedly connected with a sliding block 414, and the sliding block 414 slides with the inner wall of the sliding groove 44.

[0033] Wherein, the side of the mounting plate 41 away from the sliding rod 47 is fixedly connected with two symmetrically arranged stabilizing blocks 419, the sides of the two stabilizing blocks 419 close to each other are fixedly connected with a guide rod 420, the side of the mounting plate 41 close to the guide rod 420 is provided with a control rod 410, the surface of the control rod 410 is provided with a sliding hole 413, the guide rod 420 is slidingly connected with the control rod 410 through the sliding hole 413, the surface of the control rod 410 is provided with a vertical limiting hole 411, and the end of the positioning rod 49 away from the sliding rod 47 extends into the sliding hole 413.

[0034] The side close to the stabilizing block 419 of the mounting plate 41 is fixedly connected with two symmetrically arranged protrusions 417, the inner wall of the protrusion 417 is rotationally connected with an adjusting rod 418, the surface between the two protrusions 417 of the adjusting rod 418 is provided with a thread, and the surface of the control rod 410 is provided with a threaded hole 412, and the adjusting rod 418 is threadedly connected with the control rod 410 through the threaded hole 412.

[0035] The side close to the protrusion 417 of the mounting plate 41 is fixedly connected with a mounting seat 415, the inner wall of the mounting seat 415 is fixedly connected with a servo motor 416, the driving end of the servo motor 416 is fixedly connected with the shaft center of the adjusting rod 418, the adjusting rod 418 is driven by the servo motor 416, the sensor body 48 is accurately controlled to move along the V-shaped guide hole 42 and is inserted into the test tube 3, the position of the sensor in the solution is consistent during each detection, the accuracy and repeatability of the detection result are improved, the detection error is reduced, and the detection data is reliable.

[0036] The lower surface of the workbench 1 is fixedly connected with a supporting leg 2, the supporting leg 2 is bent, the bent supporting leg 2 on the lower surface of the workbench 1 provides stable support, effectively reduces the shaking of the equipment during the detection process, avoids the deviation of the position of the sensor inserted into the solution of the test tube 3 due to shaking, and controls the fluctuation of the detection data in a very small range.

[0037] The lower surface of the workbench 1 is fixedly connected with a driving motor 52, the driving end of the driving motor 52 penetrates the workbench 1 and is fixedly connected with the shaft center of the bracket 51, the bracket 51 is circumferentially distributed with a plurality of placing grooves, and the driving motor 52 drives the bracket 51 to accurately transfer the test tube 3, so that continuous and rapid detection can be realized, compared with the traditional single-sample detection mode, the detection work efficiency is effectively improved, a large number of nitrite samples can be detected in a short time, it is suitable for scenes such as food processing enterprises and environmental monitoring stations that need to detect the content of nitrite in batches, the detection period is greatly shortened, and the work efficiency is improved.

[0038] The side close to the sensor body 48 of the mounting plate 41 is provided with two symmetrically arranged cleaning assemblies 6, after adopting the cleaning design, the service life of the sensor is effectively prolonged, the replacement frequency of the sensor is reduced, the equipment maintenance cost and downtime are reduced, and the long-term stable detection work is ensured.

[0039] The cleaning assembly 6 comprises a supporting plate 61, the supporting plate 61 is fixedly connected with the side close to the sensor body 48 of the mounting plate 41, the upper surface of the supporting plate 61 is fixedly connected with cleaning bristles 62, after single detection or continuous detection for a preset number of times, the sensor body 48 can automatically move to the cleaning assembly 6, and the cleaning bristles 62 on the supporting plate 61 can timely clean the residual solution on the surface of the sensor, so that the residual nitrite solution does not corrode the sensor, and the detection precision is prevented from being reduced due to the influence of the residual liquid on the electrode performance of the sensor.

[0040] The working principle of the present application: the test tubes 3 containing nitrite solution to be detected are placed one by one in the circumferentially distributed slots of the bracket 51, the drive motor 52 on the lower surface of the workbench 1 is started to drive the bracket 51 to rotate around the axis, and one of the test tubes 3 is accurately transported to the position directly below the sensor body 48 to complete the positioning of the test tube 3 before detection, at the same time, the legs 2 with the bent structure provide stable support for the workbench 1 to avoid the shaking of the equipment during detection affecting the accuracy;

[0041] The servo motor 416 in the mounting seat 415 is started to drive the adjusting rod 418 to rotate around the protrusion 417, the adjusting rod 418 drives the control rod 410 to slide along the guide rod 420 through the threaded hole 412, when the control rod 410 moves, the vertical limiting hole 411 on the surface of the control rod 410 drives the positioning rod 49 to move synchronously, the positioning rod 49 slides along the guide hole 42 of the mounting plate 41, when the positioning rod 49 slides from the top of the "V" shaped area to the bottom of the guide hole 42, the slide rod 47 vertically moves downward along the limiting sleeve 46, and finally the sensor body 48 at the lower end of the slide rod 47 is inserted into the solution to be detected in the test tube 3 to start the nitrite electrochemical detection and collect the nitrite concentration signal in the solution;

[0042] After the detection is completed, the servo motor 416 is reversely operated to drive the control rod 410 and the positioning rod 49 to move reversely, so that the slide rod 47 is lifted back to the top along the "V" shaped guide hole 42, the sensor body 48 is separated from the test tube 3, and then the drive motor 52 is started again to drive the bracket 51 to rotate to transport the next test tube 3 containing the solution to be detected to the detection position, and the above detection process is repeated to realize continuous detection;

[0043] When the sensor body 48 completes single detection lifting back or continuous detection for a preset number of times, the control slide rod 47 drives the sensor body 48 to move to the cleaning assembly 6, the cleaning brush 62 on the supporting plate 61 wipes and cleans the solution remaining on the surface of the sensor body 48 to avoid the influence of the residual liquid on the subsequent detection accuracy and to ensure the continuous and stable work of the sensor.

[0044] The electrical components appearing in the text are all connected with the main controller and 220V mains, and the main controller can be a conventional known device such as a computer.

[0045] Finally, it should be noted that: the above only describes the preferred embodiments of the present application and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified or some technical features can be replaced by equivalents, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A smart electrochemical sensor device for detecting nitrite, comprising a worktable (1), characterized in that: The upper surface of the workbench (1) is provided with a material loading assembly (5), which includes a bracket (51). The bracket (51) is rotatably connected to the upper surface of the workbench (1). The bracket (51) has multiple circumferentially distributed placement slots, in which test tubes (3) are placed. The upper surface of the workbench (1) is provided with a detection assembly (4), which includes a mounting plate (41). The mounting plate (41) is fixedly connected to the upper surface of the workbench (1). The surface of the mounting plate (41) has guide holes (4). 2), and the guide hole (42) is located in the middle of the mounting plate (41) in a "V" shape. A positioning rod (49) is slidably inserted in the guide hole (42). One end of the positioning rod (49) is fixedly connected to a slide rod (47). The lower end of the slide rod (47) is fixedly connected to a sensor body (48). When the slide rod (47) is at the bottom of the "V" shaped guide hole (42), the sensor body (48) is inserted into the test tube (3). When the slide rod (47) is at the top of the "V" shaped guide hole (42), the sensor body (48) is removed from the test tube (3).

2. The intelligent electrochemical sensor device for detecting nitrite according to claim 1, characterized in that: A sleeve block (43) is horizontally slidably connected on the mounting plate (41). A support rod (45) is fixedly connected to the side of the sleeve block (43) near the slide rod (47). A limit sleeve (46) is fixedly connected to the end of the support rod (45) away from the sleeve block (43). The slide rod (47) slides against the inner wall of the limit sleeve (46).

3. The intelligent electrochemical sensor device for detecting nitrite according to claim 2, characterized in that: The mounting plate (41) has a groove (44) on its surface, and a slider (414) is fixedly connected to the inner wall of the sleeve (43), and the slider (414) slides against the inner wall of the groove (44).

4. The intelligent electrochemical sensor device for detecting nitrite according to claim 1, characterized in that: Two symmetrically arranged stabilizing blocks (419) are fixedly connected to the side of the mounting plate (41) away from the slide rod (47). A guide rod (420) is fixedly connected to the side of the two stabilizing blocks (419) that are close to each other. A control rod (410) is provided on the side of the mounting plate (41) near the guide rod (420). A sliding hole (413) is opened on the surface of the control rod (410). The guide rod (420) is slidably connected to the control rod (410) through the sliding hole (413). A vertical limiting hole (411) is opened on the surface of the control rod (410). The end of the positioning rod (49) away from the slide rod (47) extends into the sliding hole (413).

5. The intelligent electrochemical sensor device for detecting nitrite according to claim 4, characterized in that: The mounting plate (41) has two symmetrically arranged protrusions (417) fixedly connected to one side near the stabilizing block (419). An adjusting rod (418) is rotatably connected to the inner wall of the protrusion (417). The adjusting rod (418) has a thread on its surface between the two protrusions (417). The control rod (410) has a threaded hole (412) on its surface. The adjusting rod (418) is threadedly connected to the control rod (410) through the threaded hole (412).

6. The intelligent electrochemical sensor device for detecting nitrite according to claim 5, characterized in that: The mounting plate (41) is fixedly connected to a mounting base (415) on the side near the protrusion (417). A servo motor (416) is fixedly connected to the inner wall of the mounting base (415). The drive end of the servo motor (416) is fixedly connected to the axis of the adjusting rod (418).

7. The intelligent electrochemical sensor device for detecting nitrite according to claim 1, characterized in that: The lower surface of the workbench (1) is fixedly connected to a support leg (2), which is bent.

8. The intelligent electrochemical sensor device for detecting nitrite according to claim 1, characterized in that: A drive motor (52) is fixedly connected to the lower surface of the workbench (1). The drive end of the drive motor (52) passes through the workbench (1) and is fixedly connected to the axis of the bracket (51).

9. The intelligent electrochemical sensor device for detecting nitrite according to claim 1, characterized in that: Two symmetrically arranged cleaning components (6) are provided on the side of the mounting plate (41) near the sensor body (48).

10. The intelligent electrochemical sensor device for detecting nitrite according to claim 9, characterized in that: The cleaning assembly (6) includes a tray (61) which is fixedly connected to the mounting plate (41) on the side near the sensor body (48), and cleaning bristles (62) are fixedly connected to the upper surface of the tray (61).

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