Device for automatically measuring dissolved oxygen

Abstract

The utility model provides a device for automatically measuring dissolved oxygen, which comprises a rack, a manipulator assembly, a main material placing frame and a cleaning tank, the manipulator assembly is provided with a clamping mechanism capable of realizing lifting, a needle body assembly and a dissolved oxygen electrode; a plurality of main material placing holes for placing detection bottles are formed in the main material placing frame; a cleaning cavity which is opened at the upper end and is used for cleaning the dissolved oxygen electrode is formed in the cleaning tank; the material placing frame and the cleaning tank are both located on the motion path of the mechanical arm assembly. The device for automatically measuring the dissolved oxygen is compact in structure, simple to operate, high in automation degree, capable of meeting detection requirements of different processes, high in detection accuracy, good in using effect and wide in application range.

Description

Technical Field

[0001] The utility model relates to a detection device, in particular to a device for automatically measuring dissolved oxygen. Background Art

[0002] Dissolved oxygen refers to molecular oxygen dissolved in water or a liquid phase, which is an indispensable condition for the survival of aquatic organisms and aquatic plants. The determination of dissolved oxygen concentration is of great significance in the fields of industry, medicine, environmental monitoring, aquaculture, etc. It is one of the important indicators of water pollution degree. The traditional detection method is to detect by manual or semi-automatic means, with complex operation, low detection efficiency, and it will affect the detection result. Therefore, our company has developed a detection device that can achieve automatic detection. Content of the Utility Model

[0003] Technical Problems to be Solved

[0004] The technical problem to be solved by the utility model is to provide a device for automatically measuring dissolved oxygen, which has a compact structure, low cost, simple operation, high automation degree, high detection accuracy and efficiency.

[0005] Technical Solutions for Solving the Problems

[0006] The utility model provides a device for automatically measuring dissolved oxygen, comprising:

[0007] A frame 1, serving as a support and installation carrier, on which a workbench 11 is provided;

[0008] A manipulator assembly 3, arranged directly above the workbench 11 and capable of realizing horizontal movement. Three lifting components are provided on the manipulator assembly 3. The lifting component includes a vertical slider 332 capable of realizing vertical lifting and a first driving mechanism for driving the vertical slider 332 to lift. A clamping mechanism, a needle body assembly 335 and a dissolved oxygen electrode 336 are respectively arranged on the three vertical sliders 332. The needle body assembly 335 includes a first needle body, a second needle body and a third needle body arranged in parallel. The first needle body is connected to a pump body and is used for pumping and supplying liquid. The second needle body is connected to an air pump and is used for aeration. The third needle body is a liquid level detection needle and is used for detecting the liquid level;

[0009] A main material rack 21, arranged on the workbench 11, and a plurality of main material holes 210 for placing detection bottles are formed on the main material rack 21;

[0010] A cleaning tank 23, arranged on the workbench 11, and a cleaning cavity with an open upper end for cleaning the dissolved oxygen electrode 336 is formed on the cleaning tank 23;

[0011] The main material placement rack 21 and the cleaning tank 23 are both located on the movement path of the robot assembly 3.

[0012] Furthermore, there are multiple main material placement holes 210 which are arranged in a matrix.

[0013] Furthermore, the cleaning tank 23 is located at the left rear end or the right rear end of the workbench 11.

[0014] Furthermore, a secondary material placement rack 22 is also provided on the workbench 11, and secondary material placement holes for placing inoculation bottles are formed in the secondary material placement rack 22.

[0015] Furthermore, the first driving mechanism is a synchronous pulley assembly.

[0016] Furthermore, a magnetic stirring device 43 for magnetically stirring the test bottles in the main material placement holes 210 is provided at the lower end of the workbench 11.

[0017] Furthermore, a strip-shaped mounting plate 42 is horizontally slidably disposed at the lower end of the workbench 11. The length direction of the mounting plate 42 is parallel to the width direction of the workbench 11 and its sliding direction is parallel to the length direction of the workbench 11. There are multiple magnetic stirring devices 43 which are equidistantly arranged along the length direction of the mounting plate 42, and the distance between two adjacent magnetic stirring devices 43 is the same as the distance between two main material placement holes 210.

[0018] Furthermore, the magnetic stirring device 43 includes a stirring motor 433 vertically fixed on the mounting plate 42. A turntable 431 is fixed to the upper end output of the stirring motor 433, and at least two magnets 432 are circumferentially distributed on the surface of the turntable 431.

[0019] Furthermore, the frame 1 is of a frame structure. The workbench 11 divides the frame 1 into an upper cavity and a lower cavity, and an air conditioning device for controlling the temperature and humidity of the upper cavity is provided in the lower cavity.

[0020] Beneficial effects

[0021] The device of the present utility model for automatic dissolved oxygen measurement adopts a multi-functional manipulator assembly, which integrates clamping, detection, aeration, liquid pumping and liquid supply. Through a single manipulator, multiple processes can be carried out, improving the detection efficiency and accuracy, greatly reducing the production and manufacturing costs, reducing the installation space, and being easy to operate; a cleaning tank is set up to automatically clean the dissolved oxygen electrode, avoiding secondary pollution and improving the detection accuracy and precision; a magnetic stirring device is set up to stir the detection bottle, improving the uniformity of the internal liquid and meeting the requirements of different detection processes. It has a wide range of applications and good use effects; multiple slidable stirring devices are adopted to synchronously stir the detection bottles in the same row, greatly improving the stirring efficiency. At the same time, the usage amount of the stirring device is reduced, and the manufacturing cost is lowered; an air-conditioning device is set up to automatically control the environment of the detection chamber and improve the accuracy of the detection data; the device of the present utility model for automatic dissolved oxygen measurement has a compact structure, simple operation, high automation degree, can meet the detection requirements of different processes, has high detection accuracy, good use effects and a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 FIG. is a schematic structural diagram of the device of the present utility model for automatic dissolved oxygen measurement;

[0023] Figure 2 FIG. is a schematic internal structural diagram of the device of the present utility model for automatic dissolved oxygen measurement;

[0024] Figure 3 FIG. is a schematic structural diagram of the manipulator assembly of the device of the present utility model for automatic dissolved oxygen measurement;

[0025] Figure 4 FIG. is a schematic structural diagram of the manipulator of the device of the present utility model for automatic dissolved oxygen measurement;

[0026] Figure 5 FIG. is a schematic structural diagram of the manipulator of the device of the present utility model for automatic dissolved oxygen measurement from another angle;

[0027] Figure 6 FIG. is an installation schematic diagram of the main material rack of the device of the present utility model for automatic dissolved oxygen measurement;

[0028] Figure 7 FIG. is a schematic structural diagram of the magnetic stirring device of the device of the present utility model for automatic dissolved oxygen measurement;

[0029] Figure 8 is Figure 7 the enlarged view of part A in DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The embodiments of the present utility model will be described in detail below with reference to the drawings.

[0031] Refer to Figures 1-8 , the present utility model provides a device for automatic dissolved oxygen measurement, which is used for automatically detecting the dissolved oxygen in a target liquid, and comprises a frame 1 and a manipulator assembly 3.

[0032] Among them, the frame 1 serves as a support and installation carrier for installing other components. As an installation and working carrier, a workbench 11 is provided on the frame 1. The workbench 11 is horizontally arranged. Specifically, the frame 1 is of a frame structure. The workbench 11 divides the frame 1 into an upper cavity and a lower cavity. Plate bodies are provided on the side walls of the upper cavity and the lower cavity, in a shape of a cavity structure. At the same time, a door is provided at the front end of the upper cavity, and a transparent observation window is provided on the door. In order to improve the detection accuracy, it is necessary to maintain the uniformity of the detection environment in the upper cavity. Therefore, an air-conditioning device is provided in the lower cavity, and this air-conditioning device is used to control the temperature and humidity of the upper cavity. At the same time, a heat-insulating board (layer) is provided on the side wall of the upper cavity to achieve heat insulation and avoid the influence of external heat; for the convenience of movement, rollers are provided at the bottom of the frame 1, and these rollers have a braking (brake) function.

[0033] The manipulator assembly 3 is arranged directly above the workbench 11 and can achieve horizontal movement, including two-way horizontal movement in the X-axis and Y-axis directions. Three lifting components are provided on the manipulator assembly 3. The lifting component includes a vertical slider 332 and a first driving mechanism. Among them, the vertical slider 332 can achieve vertical lifting, that is, vertical up and down movement. The first driving mechanism is connected to the vertical slider 332 and serves as a power end for controlling the vertical slider 332 to achieve up and down movement; a clamping mechanism 333, a needle body assembly 335 and a dissolved oxygen electrode 336 are respectively arranged on the three vertical sliders 332. The needle body assembly 335 includes a first needle body, a second needle body and a third needle body arranged in parallel. The first needle body is connected to a pump body and is used for pumping and supplying liquid. The second needle body is connected to an air pump and is used for aeration. The third needle body is a liquid level detection needle and is used for detecting the liquid level.

[0034] The structure of the manipulator assembly 3 will be described in detail below:

[0035] The manipulator assembly 3 includes a cross slide and a manipulator body 33 disposed at the output end of the cross slide. The manipulator body 33 can move in the horizontal direction in two axes (X-axis and Y-axis) along with the output end of the cross slide. Specifically, the cross slide includes a cross beam 31 and a longitudinal beam 32, both of which are horizontally arranged. Among them, there are two cross beams 31 which are arranged in parallel and are respectively located at the left and right ends of the frame 1. A first horizontal guide rail is provided along the length direction on the cross beam 31, that is, the length direction of the first horizontal guide rail is parallel to the length direction of the cross beam 31. In this embodiment, the first horizontal guide rail is provided at the upper end of the cross beam. A first slide seat is horizontally slidably fitted on the first horizontal guide rail. At the same time, a second driving mechanism is provided on the cross beam 31. The second driving mechanism is connected to the first slide seat and is used to drive the first slide seat to slide horizontally. The longitudinal beam 32 is also horizontal, and its length direction is perpendicular to the length direction of the cross beam 31. The two ends of the longitudinal beam 32 are respectively connected to the two first slide seats and can slide horizontally along with the movement of the two first slide seats, that is, it can move back and forth. A second horizontal guide rail is provided along the length direction on the longitudinal beam 32, that is, the length direction of the second horizontal guide rail is parallel to the length direction of the longitudinal beam 32. In this embodiment, the second horizontal guide rail is provided at the upper end of the longitudinal beam 32. The second horizontal guide rail is perpendicular to the first horizontal guide rail. A second slide seat is horizontally slidably fitted on the second horizontal guide rail. The sliding direction of the second slide seat is perpendicular to the sliding direction of the longitudinal beam, so that two-axis movement in the horizontal direction can be realized. A third driving mechanism is provided on the longitudinal beam 32. The third driving mechanism is connected to the second slide seat and is used to drive the second slide seat to slide horizontally.

[0036] Both the above-mentioned second driving mechanism and the third driving mechanism are synchronous belt assemblies. Specifically, the second driving mechanism includes a plurality of second synchronous belt wheels and a second synchronous belt disposed on the plurality of second synchronous belt wheels. In this embodiment, there is one second synchronous belt, which realizes commutation through the second synchronous belt wheels, so that the direction of the second synchronous belt on the cross beam is parallel to the length direction of the first horizontal guide rail, forming a gantry structure. The two first slide seats are connected to the second synchronous belt, and thus the two first slide seats can realize synchronous sliding, and further ensure the linearity of the sliding of the longitudinal beam. At the same time, the second driving mechanism further includes a second driving motor, which is connected to one of the second synchronous belt wheels to drive the second synchronous belt to rotate. The third driving mechanism includes two third synchronous belt wheels, which are respectively disposed at the two ends of the longitudinal beam. A third synchronous belt is provided between the two third synchronous belt wheels. The third synchronous belt is in a horizontal state. The second slide seat is connected to the third synchronous belt, and thus the second slide seat can realize horizontal sliding. At the same time, it further includes a third driving motor, which is connected to one of the third synchronous belt wheels to drive the third synchronous belt to rotate.

[0037] The manipulator body 33 is installed on the second sliding seat, and thus can achieve arbitrary movement in the horizontal direction. The manipulator body 33 includes a mounting seat 331, and the mounting seat 331 is fixed on the second sliding seat. Three lifting components are provided on the mounting seat 331, and the three lifting components are arranged in parallel. The lifting component includes a vertical slider 332 and a first driving mechanism. The vertical slider is vertically slidably matched on the mounting seat 331. The first driving mechanism is connected to the vertical slider and is used to drive the vertical slider to move up and down to achieve lifting. Specifically, a first slide rail is vertically provided on the side wall of the mounting seat 331. There are three first slide rails and they are arranged in parallel. The vertical slider 332 is vertically slidably matched on the first slide rail, and it can move up and down, that is, lift. The first driving mechanism is connected to the vertical slider. Specifically, the first driving mechanism includes two first synchronous belt wheels 338 arranged in parallel on the mounting seat. The two first synchronous belt wheels 338 are arranged one above the other. A first synchronous belt 339 is provided between the two first synchronous belt wheels 338. The first synchronous belt 339 can achieve vertical conveying (rotation). A connecting piece is provided on the vertical slider, and the connecting piece is connected to the first synchronous belt and can move up and down with the rotation of the first synchronous belt. A first driving motor 337 is provided at the upper end of the mounting seat. The output end of the first driving motor 337 is connected to the upper first synchronous belt wheel 338, and is thus used to drive the first synchronous belt 339 to move, thereby driving the vertical slider to move up and down.

[0038] In this application, the mounting seat 331 is a plate-like structure, which is vertically arranged, and the plane where the mounting seat is located is parallel or perpendicular to the cross beam. For the convenience of observation, in this embodiment, its plane is perpendicular to the cross beam, that is, parallel to the longitudinal beam. The vertical slider is arranged at the rear end of the mounting seat, and the first driving mechanism is arranged at the front end of the mounting seat, which can reduce the mounting space at the front end. At the same time, a strip-shaped hole is provided on the mounting seat, and the strip-shaped hole is vertically arranged. A connecting piece is provided on the vertical slider, and the connecting piece passes through the strip-shaped hole and is connected to (the first synchronous belt), thereby realizing the connection between the first driving mechanism and the vertical slider.

[0039] A main material placing rack 21 is provided on the workbench 11. For the convenience of taking and placing, in this embodiment, there are multiple main material placing racks and they are arranged in sequence along the length direction of the workbench. A plurality of main material placing holes 210 are provided on the main material placing rack 21, and the main material placing holes 210 are used for placing test bottles. There are multiple main material placing holes 210 and they are arranged in a matrix. Specifically, at least one row of main material placing holes is provided on each main material placing rack 21. Each row includes multiple main material placing holes. The multiple placing holes are equidistantly arranged along the width direction of the workbench 11, that is, equidistantly arranged along the length direction of the cross beam. The distance between adjacent two rows of placing holes is the same, that is, when there are multiple rows of placing holes, they are equidistantly arranged along the length direction of the workbench 11.

[0040] The cleaning tank 23 is arranged on the workbench 11. A cleaning cavity is formed in the cleaning tank 23. The upper end of the cleaning cavity is open (has an opening) and is used for cleaning the dissolved oxygen electrode 336 to improve the detection accuracy. The main material placing rack 21 and the cleaning tank 23 are both located on the movement path of the manipulator assembly 3, realizing operations such as liquid injection, liquid extraction, aeration, dissolved oxygen detection for the detection bottles on the main material placing rack 21 and cleaning the dissolved oxygen electrode.

[0041] In order to facilitate the cleaning of the dissolved oxygen electrode, in this embodiment, the cleaning tank 23 is located at the left rear end or the right rear end of the workbench 11, that is, close to the initial position of the manipulator assembly in the reset state, reducing the movement stroke.

[0042] In order to meet different detection processes, in this application, a secondary material placing rack 22 is also arranged on the workbench 11. Secondary material placing holes are formed in the secondary material placing rack 22. The secondary material placing holes are used for placing inoculation bottles. The number of them is usually one, or can also be multiple.

[0043] In order to improve the automation degree and detection accuracy, in this application, a magnetic stirring device 43 is arranged at the lower end of the workbench 11. The magnetic stirring device 43 is used for magnetically stirring the detection bottles in the main material placing holes 210 to improve the uniformity of the liquid in the detection bottles, thereby improving the detection accuracy. Specifically, a strip-shaped mounting plate 42 is horizontally slidably matched at the lower end of the workbench 11. The length direction of the mounting plate 42 is parallel to the width direction of the workbench 11, and the sliding direction of the mounting plate 42 is parallel to the length direction of the workbench 11. It is horizontally slidably matched at the lower end of the workbench 11 through a guide rail. At the same time, a driving mechanism is arranged on the frame for driving the mounting plate to slide horizontally. The driving mechanism is a synchronous pulley assembly (including synchronous pulleys, synchronous belts and driving motors), which has a long stroke, a small installation space and high running accuracy. At the same time, its working noise is low. The magnetic stirring devices 43 are multiple and are arranged at equal intervals along the length direction of the mounting plate 42. The number of the magnetic stirring devices 43 is the same as the number of the main material placing holes in the same row, and the distance between two adjacent magnetic stirring devices 43 is the same as the distance between two adjacent main material placing holes 210 in the same row. Therefore, the detection bottles in the same row can be stirred synchronously. The magnetic stirring device 43 includes a stirring motor 433 vertically fixed on the mounting plate 42. A turntable 431 is fixed on the upper end output shaft of the stirring motor 433. At least two magnets 432 are circumferentially distributed on the disk surface of the turntable 431. In this embodiment, there are two, and their N poles or S poles face upward.

[0044] The device for automatic dissolved oxygen measurement of the present utility model adopts a multi-functional manipulator assembly, which integrates clamping, detection, aeration, liquid pumping and liquid supply. Through a single manipulator, multiple processes can be realized, improving the detection efficiency and accuracy, greatly reducing the production and manufacturing costs, reducing the installation space, and being easy to operate. A cleaning tank is set up to automatically clean the dissolved oxygen electrode, avoiding secondary pollution and improving the detection accuracy and precision. A magnetic stirring device is set up to stir the detection bottle, improving the uniformity of the internal liquid and meeting the requirements of different detection processes. It has a wide application range and good use effect. Multiple slidable stirring devices are adopted to synchronously stir the detection bottles in the same row, greatly improving the stirring efficiency. At the same time, the usage amount of the stirring device is reduced, and the manufacturing cost is lowered. An air-conditioning device is set up to automatically control the environment of the detection chamber and improve the accuracy of the detection data. The device for automatic dissolved oxygen measurement of the present utility model has a compact structure, simple operation, high automation degree, can meet the detection requirements of different processes, has high detection accuracy, good use effect and wide application range.

[0045] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the technical principle of the present utility model, several improvements and retouches can still be made, and these improvements and retouches should also be regarded as the protection scope of the present utility model.

Claims

1. A device for automatic dissolved oxygen measurement, characterized in that, Comprising: A frame, serving as a support and installation carrier, on which a workbench is provided; A manipulator assembly, arranged directly above the workbench and capable of horizontal movement. There are three lifting components on the manipulator assembly. The lifting component includes a vertical slider capable of vertical lifting and a first driving mechanism for driving the vertical slider to lift. A clamping mechanism, a needle body assembly, and a dissolved oxygen electrode are respectively arranged on the three vertical sliders. The needle body assembly includes a first needle, a second needle, and a third needle arranged in parallel. The first needle is connected to a pump body and is used for pumping and supplying liquid. The second needle is connected to an air pump and is used for aeration. The third needle is a liquid level detection needle and is used for detecting the liquid level; A main material rack, arranged on the workbench, and a plurality of main material holes for placing test bottles are formed on the main material rack; A cleaning tank, arranged on the workbench, and a cleaning cavity with an open upper end for cleaning the dissolved oxygen electrode is formed on the cleaning tank; Both the main material rack and the cleaning tank are located on the movement path of the manipulator assembly.

2. The device for automatic dissolved oxygen measurement according to claim 1, characterized in that: The main material holes are multiple and arranged in a matrix.

3. The device for automatic dissolved oxygen measurement according to claim 1, characterized in that: The cleaning tank is located at the left rear end or the right rear end of the workbench.

4. The device for automatic dissolved oxygen measurement according to claim 1, wherein: A secondary material rack is also provided on the workbench, and secondary material holes for placing inoculation bottles are formed on the secondary material rack.

5. The device for automatic dissolved oxygen measurement according to claim 1, characterized in that: The first driving mechanism is a synchronous pulley assembly.

6. The device for automatic dissolved oxygen measurement according to claim 1, characterized in that: A magnetic stirring device for magnetically stirring the test bottles in the main material holes is provided at the lower end of the workbench.

7. The device for automatic dissolved oxygen measurement according to claim 6, characterized in that: A strip-shaped mounting plate is horizontally slidably equipped at the lower end of the workbench. The length direction of the mounting plate is parallel to the width direction of the workbench and its sliding direction is parallel to the length direction of the workbench. The magnetic stirring devices are multiple and arranged equidistantly along the length direction of the mounting plate. The distance between adjacent two magnetic stirring devices is the same as the distance between two main material holes.

8. The device for automatic dissolved oxygen measurement according to claim 7, characterized in that: The magnetic stirring device includes a stirring motor vertically fixed on the mounting plate. A turntable is fixed to the upper output end of the stirring motor, and at least two magnets are circumferentially distributed on the surface of the turntable.

9. The device for automatic dissolved oxygen measurement according to claim 1, wherein: The frame is of a frame structure. The workbench divides the frame into an upper cavity and a lower cavity, and an air conditioning device for controlling the temperature and humidity of the upper cavity is provided in the lower cavity.

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