Verification and calibration device of tester for measuring dissolved oxygen in water body or liquid

Abstract

The invention belongs to the technical field of dissolved oxygen measurement, and discloses a tester verification and calibration device for measuring dissolved oxygen in water or liquid, which comprises a tester, a connecting line arranged on one side of the tester, a detection probe arranged on one end of the connecting line, a storage tank arranged on one side of the tester and located on one side of the connecting line, and a fixing frame arranged on the front side of the storage tank. A supporting block is fixedly installed on the top of one side of the fixing frame, one end of the connecting line is located at the bottom of the supporting block, a storage tank is arranged on the front side of the fixing frame, and a placing base is arranged at the bottom of the storage tank. The upper end and the lower end of the detection probe are supported and fixed, so that the stability of the detection probe is improved, the situation that when the placement position and depth of the detection probe are adjusted, the probe is placed unstably and shakes, consequently, a detection signal is unstable, and a measurement result is affected is prevented, and the accuracy and precision of calibration of the detection probe are improved conveniently.

Description

Technical Field

[0001] The invention belongs to the technical field of dissolved oxygen measurement, and in particular relates to a verification and calibration device for a dissolved oxygen measuring instrument used for measuring dissolved oxygen in water or liquid. Background Art

[0002] A dissolved oxygen meter is an instrument used to measure the concentration of dissolved oxygen in water or liquid. Dissolved oxygen meters are widely used in environmental protection, aquaculture, ecological research and other fields. However, due to the influence of various factors, such as temperature, salinity, pressure, water flow and other factors, dissolved oxygen meters may have large errors after long-term use, so they need to be calibrated regularly to ensure their accuracy and reliability.

[0003] In the prior art, when measuring water or liquid using a detection probe, the placement depth of the probe must be determined based on actual needs, and multiple detections must be performed at different depths. When the placement and depth of the detection probe are adjusted, the probe is placed unstably and is prone to shaking, which can cause unstable detection signals and affect measurement results, making it difficult to improve the accuracy and precision of the detection probe calibration. Summary of the invention

[0004] The present invention aims at the problems in the prior art and proposes the following technical solutions: a calibration device for a meter for measuring dissolved oxygen in water or liquid, comprising a meter, a connecting line is arranged on one side of the meter, a detection probe is arranged on one end of the connecting line, a storage tank is arranged on one side of the meter and located on one side of the connecting line, a fixing frame is arranged on the front side of the storage tank, a support block is fixedly installed on the top of one side of the fixing frame, one end of the connecting line is located at the bottom of the support block, a storage tank is arranged on the front side of the fixing frame, a placement seat is arranged on the bottom of the storage tank, a connecting pipe is fixedly installed on one side of the storage tank, a control valve is arranged on one end of the connecting pipe, and the other end of the connecting pipe is located inside the storage tank, and a mounting ring is fixedly installed on one end of the detection probe. A ring-shaped groove is provided at the bottom of the mounting ring, and a movable rod is movably connected inside the ring-shaped groove. A mounting block is fixedly installed at one end of the movable rod. The inner wall of the mounting block is rotatably connected to the outer side of the detection probe. A groove is provided in the middle of the mounting block, and a moving block is slidably connected to the inner wall of the groove. A connecting block is fixedly installed at the bottom of the moving block, and a first electric push rod is fixedly installed at the bottom of the connecting block. The bottom of the first electric push rod is fixedly installed to the inner wall of the bottom of the groove. Rotating plates are hinged at both ends of the top of the moving block, and a fixed baffle is hinged at one end of the rotating plate. Moving grooves are provided on both sides of the top of the mounting block, and both sides of the fixed baffle are rotatably connected to the inner wall of the moving groove. A moving structure is provided on one side of the first electric push rod and located on the outside of the bottom end of the mounting block.

[0005] As a preferred embodiment of the above technical solution, an oxygen solution is provided inside the storage tank, a photoelectric detection module is provided inside the detection probe, the detection probe extends through the middle of one side of the fixed frame to the inside of the storage tank, and a protective cover is provided at the bottom of the detection probe and located at the mobile structure.

[0006] As a preferred embodiment of the above technical solution, the fixed baffle and the rotating plate are symmetrically arranged around the center of the moving block. A mounting groove is provided at the bottom of the fixed baffle, and a second electric push rod is fixedly installed inside the mounting groove. A fixed clamping block is fixedly installed at one end of the second electric push rod. The fixed clamping block is located inside the mounting groove, and a clamping groove is provided on one side of the fixed baffle.

[0007] As a preferred embodiment of the above technical solution, the movable structure includes a first rack, one side of the first rack is fixedly installed with the connecting block, one side of the first rack is meshed with a gear, a rotating rod is fixedly installed in the middle of the gear, one side of the gear is meshed with a second rack, one side of the gear is fixedly installed with a protective cover, a fixing groove is opened at the bottom of the protective cover, an electric telescopic rod is fixedly installed inside the fixing groove, and a support ring is fixedly installed at one end of the electric telescopic rod.

[0008] As a preferred embodiment of the above technical solution, the protective cover is located at the bottom end of the mounting block, the first rack, the gear, and the second rack are located between the protective cover and the first electric push rod, the support ring is located inside the fixed groove, and the first rack, the gear, the rotating rod, the second rack, the electric telescopic rod and the support ring are all symmetrically arranged around the center of the mounting block.

[0009] As a preferred embodiment of the above technical solution, first magnetic blocks are fixedly installed on both sides of the middle part of the second rack, the first magnetic blocks are located on both sides of the gear, a movable opening is opened at the bottom of the second rack and at the inner wall at the bottom of the groove, two second magnetic blocks are fixedly installed on the inner wall on one side of the movable opening, and the first magnetic block is magnetically connected to the second magnetic block.

[0010] As a preferred embodiment of the above technical solution, fixed plates are rotatably connected on both sides of the rotating rod, the bottom of the fixed plate is fixedly installed on the inner wall of the groove, limiting grooves are opened on the inner walls of both sides of the protective cover, and limiting blocks are slidably connected inside the limiting grooves. The limiting block is located below the groove, and one side of the limiting block is fixedly installed on the outer wall of the bottom end of the mounting block.

[0011] As a preferred embodiment of the above technical solution, the protective cover is threadedly connected to the outer side of the protective cover, an installation opening is opened in the middle of the protective cover, a movable plate is arranged inside the installation opening, a fixed rod is fixedly installed on the top of the movable plate, a cleaning block is fixedly installed on the top of the fixed rod, a pressing block is fixedly installed on the bottom of the movable plate, a telescopic rod is fixedly installed on the top of the pressing block, a sliding groove is opened on the top of the telescopic rod and located at the bottom of the protective cover, and the top of the telescopic rod is slidably connected to the sliding groove.

[0012] As a preferred embodiment of the above technical solution, the pressing block is located at the bottom of the protective cover, the telescopic rod is symmetrically arranged on the left and right sides of the movable plate, the fixed rod and the cleaning block extend to the inside of the protective cover through the mounting opening, and compression springs are arranged on both sides of the fixed rod, one end of the compression spring is fixedly installed on the bottom of the cleaning block, and the other end thereof is fixedly installed on the top of the movable plate, and the cleaning block is arranged corresponding to the bottom of the detection probe.

[0013] The beneficial effects of the present invention are: (1) The present invention enables the rotating plate to drive the fixed baffle to rotate by moving the moving block, so that the fixed baffle is pressed against the inner wall of the storage tank, and the fixed clamping block is clamped at the top of the storage tank. At the same time, the moving structure is moved to make the support ring move and fit with the bottom inner wall of the storage tank, so that the upper and lower ends of the detection probe are supported and fixed, thereby improving the stability of the detection probe and preventing the probe from shaking due to unstable placement when adjusting the placement position and depth of the detection probe, thereby causing unstable detection signals and affecting measurement results, thereby facilitating improving the accuracy and precision of the detection probe calibration; (2) The present invention can move the protective cover to the bottom of the detection probe to shield it while the support ring supports and fixes the bottom of the detection probe through the movement of the movable structure, thereby preventing strong light from directly irradiating the probe during the detection process and avoiding interference with the optical signal detected by the photoelectric detection module inside the detection probe, thereby improving the accuracy of the measurement result; (3) The present invention can protect the bottom of the detection probe and the protective cover through the protective cover. When the detection probe is not in use, it can prevent the detection probe from being damaged by impact. By pressing and rotating the pressing block, the cleaning block can be fitted to clean the bottom of the detection probe, thereby improving the cleanliness of the detection probe and preventing impurities from adhering to it and affecting the detection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 What is shown is a schematic diagram of the overall structure of the embodiment; Figure 2 Shown is a structural diagram of a detection probe of an embodiment; Figure 3 Shown is a cross-sectional view of an embodiment detection probe; Figure 4 It is shown that Figure 3 A magnified view of point A; Figure 5 The structure diagram of the fixed baffle plate, the rotating plate and the detection probe of the embodiment is shown; Figure 6 Shown is a structural diagram of a mobile structure of an embodiment; Figure 7 The structure diagram between the protective cover and the first electric push rod of the embodiment is shown; Figure 8It is shown that Figure 7 A magnified view of point B; Fig. 9 Shown is a bottom structural diagram of the detection probe and the protective cover of the embodiment; Fig.10 Shown is a structural diagram of a protective cover according to an embodiment.

[0015] In the figure: 1. measuring instrument; 2. connecting line; 3. detection probe; 4. storage tank; 5. fixing frame; 6. supporting block; 7. storage tank; 8. placing seat; 9. connecting pipe; 10. mounting ring; 11. movable rod; 12. mounting block; 13. moving block; 14. connecting block; 15. first electric push rod; 16. rotating plate; 17. fixed baffle; 18. moving structure; 181. first rack; 182. gear; 183. second rack; 184. protective cover; 185. electric telescopic rod; 186. supporting ring; 19. protective cover; 20. second electric push rod; 21. fixed card block; 22. first magnetic block; 23. second magnetic block; 24. fixing plate; 25. limiting block; 26. moving plate; 27. fixing rod; 28. cleaning block; 29. ​​pressing block; 30. telescopic rod; 31. compression spring. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0017] The present invention provides a calibration device for measuring dissolved oxygen in water or liquid. Figures 1 to 5As shown, it includes a measuring instrument 1, a connecting line 2 is arranged on one side of the measuring instrument 1, a detection probe 3 is arranged on one end of the connecting line 2, a storage tank 4 is arranged on one side of the measuring instrument 1 and located on the side of the connecting line 2, a fixing frame 5 is arranged on the front side of the storage tank 4, a support block 6 is fixedly installed on the top of one side of the fixing frame 5, one end of the connecting line 2 is located at the bottom of the support block 6, a storage tank 7 is arranged on the front side of the fixing frame 5, a placement seat 8 is arranged at the bottom of the storage tank 7, a connecting pipe 9 is fixedly installed on one side of the storage tank 4, a control valve is arranged at one end of the connecting pipe 9, and the other end thereof is located inside the storage tank 7, a mounting ring 10 is fixedly installed on one end of the detection probe 3, an annular groove is opened at the bottom of the mounting ring 10, and the inside of the annular groove is movable A movable rod 11 is connected, a mounting block 12 is fixedly installed at one end of the movable rod 11, a groove is opened in the middle of the mounting block 12, a moving block 13 is slidably connected to the inner wall of the groove, a connecting block 14 is fixedly installed at the bottom of the moving block 13, a first electric push rod 15 is fixedly installed at the bottom of the connecting block 14, the bottom of the first electric push rod 15 is fixedly installed to the inner wall of the bottom of the groove, both ends of the top of the moving block 13 are hinged with rotating plates 16, one end of the rotating plate 16 is hinged with a fixed baffle 17, moving grooves are opened on both sides of the top of the mounting block 12, both sides of the fixed baffle 17 are rotatably connected to the inner wall of the moving groove, and a moving structure 18 is arranged on one side of the first electric push rod 15 and located on the outer side of the bottom end of the mounting block 12.

[0018] The storage tank 4 is provided with an oxygen solution, the detection probe 3 is provided with a photoelectric detection module, the detection probe 3 passes through the middle of one side of the fixing frame 5 and extends to the inside of the storage tank 7 , and the detection probe 3 is provided with a protective cover 19 at the bottom of the mobile structure 18 .

[0019] By putting the tested solution into the storage tank 7, the oxygen solution inside the storage tank 4 enters the tested solution through the connecting pipe 9 through the control valve, the protective cover 19 is removed, and then the detection probe 3 is put into the storage tank 7, and the connecting line 2 and the detection probe 3 are supported by the supporting block 6 and the fixing frame 5. The first electric push rod 15 drives the moving block 13 to move upward along the inner wall of the groove, so that the rotating plate 16 is deflected and the fixed baffle 17 is deflected. The two sides of the fixed baffle 17 rotate along the inner wall of the moving groove, so that the fixed baffle 17 rotates from a vertical state to a horizontal state. One end of the fixed baffle 17 is tightly pressed against the top inner wall of the storage tank 7. At the same time, through the action of the connecting block 14, when the first electric push rod 15 moves upward, the bottom drives the moving structure 18 on the outer side of the bottom end of the mounting block 12 to move to the bottom of the detection probe 3. Through the movement of the moving structure 18, it fits with the bottom inner wall of the storage tank 7 to support the bottom of the detection probe 3, so that the detection probe 3 Both the top and bottom ends are supported and fixed, which is convenient for improving the stability of the detection probe 3 and preventing the detection probe 3 from shaking after adjusting the depth and position, thereby affecting the detection effect. The movable rod 11 is driven to rotate along the annular groove at the bottom of the mounting ring 10 by rotating the mounting block 12, so as to facilitate driving the position of the fixed baffle 17 and the rotating plate 16. When there is strong light irradiation, by adjusting the position of the fixed baffle 17 on the top of the storage tank 7, the detection probe 3 can be supported and the strong light can be shielded at the same time, thereby reducing the interference of the detection probe 3 with the strong light. Then, the measuring instrument 1 is started, so that the detection probe 3 detects the solution to be tested inside the storage tank 7. The change in oxygen solubility will cause the light intensity absorbed by the solution to change. The photoelectric detection module is used to obtain the concentration of dissolved oxygen by detecting the change in light intensity. The concentration of dissolved oxygen is obtained according to the change in light intensity. At the same time, the parameters of the measuring instrument 1 can be calibrated to improve the accuracy and precision of the calibration, and the operation is convenient.

[0020] like Figure 3 to Figure 4 As shown, the fixed baffle 17 and the rotating plate 16 are symmetrically arranged with respect to the center of the moving block 13. A mounting groove is provided at the bottom of the fixed baffle 17. A second electric push rod 20 is fixedly installed inside the mounting groove. A fixed clamping block 21 is fixedly installed at one end of the second electric push rod 20. The fixed clamping block 21 is located inside the mounting groove, and a clamping groove is provided on one side of the fixed baffle 17.

[0021] The symmetrically arranged fixed baffle 17 and rotating plate 16 can be tightly fixed to both sides of the top inner wall of the storage tank 7, thereby improving the stability of fixing the top of the detection probe 3. By starting the second electric push rod 20 to drive the fixed card block 21 to move out of the installation groove, the card slot of the fixed card block 21 can clamp the top of the storage tank 7, thereby further improving the stability of the fixed baffle 17 and facilitating detection by the detection probe 3.

[0022] like Figures 6 to 8As shown, the moving structure 18 includes a first rack 181, one side of the first rack 181 is fixedly installed with the connecting block 14, one side of the first rack 181 is meshed with a gear 182, a rotating rod is fixedly installed in the middle of the gear 182, one side of the gear 182 is meshed with a second rack 183, one side of the second rack 183 is fixedly installed with a protective cover 184, a fixing groove is opened at the bottom of the protective cover 184, an electric telescopic rod 185 is fixedly installed inside the fixing groove, and a support ring 186 is fixedly installed at one end of the electric telescopic rod 185, the protective cover 184 is located at the bottom of the mounting block 12, the first rack 181, the gear 182, and the second rack 183 are located between the protective cover 184 and the first electric push rod 15, the support ring 186 is located inside the fixing groove, and the first rack 181, the rotating rod of the gear 182, the second rack 183, the electric telescopic rod 185 and the support ring 186 are all symmetrically arranged around the center of the mounting block 12.

[0023] When the first electric push rod 15 drives the connecting block 14 and the moving block 13 to move upward, the moving block 13 drives the first rack 181 to move upward, so that the gear 182 drives the rotating rod to rotate, and the second rack 183 drives the protective cover 184 to move downward. The symmetrical arrangement of the first rack 181, the gear 182, the rotating rod, the second rack 183, the electric telescopic rod 185 and the supporting ring 186 can improve the stability of the movement of the protective cover 184, so that the protective cover 184 moves from the bottom end of the mounting block 12 to the detection probe 3. On the outside of the bottom end, the outside of the detection probe 3 is blocked to prevent strong light from interfering with the detection of the detection probe 3. At the same time, the electric telescopic rod 185 is started to drive the support ring 186 to move downward, so that the support block 6 fits against the bottom inner wall of the storage tank 7, supports the bottom end of the detection probe 3, and improves the stability of the bottom end of the detection probe 3. The movement of the support ring 186 driven by the electric telescopic rod 185 can be adjusted according to the placement depth of the detection probe 3, so that the detection probe 3 can be supported when placed at different depths.

[0024] like Figures 6 to 8 As shown, first magnetic blocks 22 are fixedly installed on both sides of the middle of the second rack 183, the first magnetic blocks 22 are located on both sides of the gear 182, a movable opening is opened at the bottom of the second rack 183 and at the inner wall at the bottom of the groove, and two second magnetic blocks 23 are fixedly installed on the inner wall on one side of the movable opening, and the first magnetic block 22 is magnetically connected to the second magnetic block 23.

[0025] When the second rack 183 drives the protective cover 184 to move downward, the bottom end of the second rack 183 moves downward through the moving port, so that the protective cover 184 moves to the outside of the bottom end of the detection probe 3. When the second rack 183 and the top end of the protective cover 184 move to the position of the gear 182, the first magnetic block 22 in the middle of the second rack 183 moves to the second magnetic block 23 of the moving port. The position of the protective cover 184 is fixed through the magnetic connection between the first magnetic block 22 and the second magnetic block 23, thereby improving the stability of the protective cover 184 and facilitating the shielding effect of the protective cover 184 on the detection probe 3, thereby avoiding interference with the optical signal detected by the photoelectric detection module inside the detection probe 3, thereby facilitating the improvement of the accuracy of the measurement result.

[0026] like Figures 6 to 8 As shown, both sides of the rotating rod are rotatably connected with fixed plates 24, the bottom of the fixed plate 24 is fixedly installed with the inner wall of the groove, and the inner walls on both sides of the protective cover 184 are provided with limiting grooves, and the limiting blocks 25 are slidably connected inside the limiting grooves. The limiting block 25 is located below the groove, and one side of it is fixedly installed with the outer wall of the bottom end of the mounting block 12.

[0027] The fixing plate 24 facilitates the improvement of the stability of the rotating rod when the gear 182 drives it to rotate. When the protective cover 184 moves downward, the limiting block 25 on the outer side of the bottom end of the mounting block 12 moves along the limiting groove on the inner wall of the protective cover 184, further limiting the protective cover 184, thereby further improving the stability of the movement of the protective cover 184, thereby improving the shielding effect, and facilitating the electric telescopic rod 185 to drive the support ring 186 to move, thereby supporting the bottom end of the detection probe 3 and facilitating the use of the detection probe 3.

[0028] like Figures 9 and 10 As shown, the protective cover 19 is threadedly connected to the outer side of the protective cover 184, a mounting opening is opened in the middle of the protective cover 19, a movable plate 26 is arranged inside the mounting opening, a fixed rod 27 is fixedly installed on the top of the movable plate 26, a cleaning block 28 is fixedly installed on the top of the fixed rod 27, a pressing block 29 is fixedly installed on the bottom of the movable plate 26, a telescopic rod 30 is fixedly installed on the top of the pressing block 29, a sliding groove is opened on the top of the telescopic rod 30 and located at the bottom of the protective cover 19, and the top of the telescopic rod 30 is slidably connected to the sliding groove.

[0029] The protective cover 19 is threadedly connected to the outer side of the protective cover 184, so that the protective cover 19 can be easily removed and the detection probe 3 can be used for detection. The protective cover 19 can protect the bottom of the detection probe 3 and the protective cover 184. When the detection probe 3 is not in use, the detection probe 3 can be prevented from being damaged by impact. When the protective cover 19 is located at the bottom of the protective cover 184 and the detection probe 3, the pressing block 29 is pressed upward, and the telescopic rod 30 is contracted, so that the pressing block 29 drives the movable plate 26 and the fixed rod 27 to move from the installation port to the inside of the protective cover 19, and at the same time, the fixed rod 27 drives the cleaning block 28 to move to the bottom of the detection probe 3, and then the pressing block 29 is rotated to drive the telescopic rod 30 to rotate along the sliding groove, so that the movable plate 26 drives the fixed rod 27 and the cleaning block 28 to rotate along the bottom of the detection probe 3 to clean the bottom of the detection probe 3. The detection probe 3 can still be cleaned without opening the protective cover 19, which is convenient for improving the cleanliness of the detection probe 3 and preventing impurities from adhering to and affecting the detection effect.

[0030] like Figures 9 and 10 As shown, the pressing block 29 is located at the bottom of the protective cover 19, the telescopic rod 30 is symmetrically arranged on the left and right sides of the movable plate 26, the fixed rod 27 and the cleaning block 28 extend to the inside of the protective cover 19 through the installation opening, and compression springs 31 are arranged on both sides of the fixed rod 27. One end of the compression spring 31 is fixedly installed on the bottom of the cleaning block 28, and the other end thereof is fixedly installed on the top of the movable plate 26. The cleaning block 28 is arranged corresponding to the bottom of the detection probe 3.

[0031] Since the pressing block 29 is located at the bottom of the protective cover 19, it is convenient to press the pressing block 29 upward, so that the movable plate 26 drives the fixed rod 27 and the cleaning block 28 to move to the bottom of the detection probe 3. When the movable plate 26 drives the fixed rod 27 and the cleaning block 28 to move to the bottom of the detection probe 3, the cleaning block 28 is fitted with the bottom of the detection probe 3 through the action of the compression spring 31. When the pressing block 29 is rotated, the cleaning block 28 can clean the detection probe 3 under the action of the movable plate 26 and the fixed rod 27, thereby improving the cleanliness and facilitating use.

[0032] Working principle: When in use, put the solution to be tested into the storage tank 7, let the oxygen solution inside the storage tank 4 enter the solution to be tested through the connecting pipe 9 through the control valve, turn the protective cover 19 to remove it, and then put the detection probe 3 into the storage tank 7, support the connecting line 2 and the detection probe 3 through the supporting block 6 and the fixing frame 5, and start the first electric push rod 15 to drive the moving block 13 to move upward along the inner wall of the groove, so that the rotating plate 16 deflects and pushes the fixed baffle 17 to deflect, and the two sides of the fixed baffle 17 rotate along the inner wall of the moving groove, so that the fixed baffle 17 moves upward from the inner wall of the moving groove. The vertical state is rotated into the horizontal state, one end of the fixed baffle 17 is pressed against the inner wall of the top end of the storage tank 7, and then the second electric push rod 20 is started to drive the fixed card block 21 to move out of the installation groove, so that the card groove of the fixed card block 21 can clamp the top of the storage tank 7, thereby further improving the stability of the fixed baffle 17. At the same time, through the action of the connecting block 14, when the first electric push rod 15 moves upward, the bottom drives the first rack 181 to move upward, so that the gear 182 drives the rotating rod to rotate along the fixed plate 24, and the second rack 183 drives the protective cover 184 to move downward from the moving opening, limiting The fixed block 25 moves along the limiting groove. When the second rack 183 and the top of the protective cover 184 move to the position of the gear 182, the first rack 181 in the middle of the second rack 183 moves to the second magnetic block 23 of the moving port. Through the magnetic connection between the first magnetic block 22 and the second magnetic block 23, the protective cover 184 moves from the bottom end of the mounting block 12 to the outside of the bottom end of the detection probe 3 for shielding, and the position of the protective cover 184 is fixed to prevent strong light from interfering with the detection of the detection probe 3. At the same time, the electric telescopic rod 185 is started to drive the support ring 186 to move downward. The support block 6 is made to fit with the bottom inner wall of the storage tank 7 to support the bottom end of the detection probe 3, so that the top and bottom ends of the detection probe 3 are both supported and fixed, and then the measuring instrument 1 is started to make the detection probe 3 detect the solution to be tested inside the storage tank 7. The change in oxygen solubility will cause the change in the light intensity absorbed by the solution. The concentration of dissolved oxygen is obtained by detecting the change in light intensity using the photoelectric detection module. The concentration of dissolved oxygen is obtained according to the change in light intensity. At the same time, the parameters of the measuring instrument 1 can be calibrated to improve the accuracy and precision of the calibration, and the operation is convenient.

[0033] When the protective cover 19 is located at the bottom of the protective cover 184 and the detection probe 3, the pressing block 29 is pressed upwards, and the telescopic rod 30 contracts, so that the pressing block 29 drives the movable plate 26 and the fixed rod 27 to move from the installation port to the inside of the protective cover 19, and at the same time, the fixed rod 27 drives the cleaning block 28 to move to the bottom of the detection probe 3. The cleaning block 28 is fitted with the bottom of the detection probe 3 through the action of the compression spring 31, and then the pressing block 29 is rotated to drive the telescopic rod 30 to rotate along the sliding groove, so that the movable plate 26 drives the fixed rod 27 and the cleaning block 28 to rotate along the bottom of the detection probe 3 to clean the bottom of the detection probe 3. When the protective cover 19 is not opened, the detection probe 3 can still be cleaned, which is convenient for improving the cleanliness of the detection probe 3 and preventing impurities from adhering to it and affecting the detection effect.

[0034] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. A calibration device for measuring dissolved oxygen in water or liquid, characterized in that: The invention comprises a measuring instrument (1), wherein a connecting line (2) is arranged on one side of the measuring instrument (1), a detection probe (3) is arranged on one end of the connecting line (2), a storage tank (4) is arranged on one side of the measuring instrument (1) and located on one side of the connecting line (2), a fixing frame (5) is arranged on the front side of the storage tank (4), a support block (6) is fixedly installed on the top of one side of the fixing frame (5), one end of the connecting line (2) is located at the bottom of the support block (6), a storage tank (7) is arranged on the front side of the fixing frame (5), a placement seat (8) is arranged on the bottom of the storage tank (7), a connecting pipe (9) is fixedly installed on one side of the storage tank (4), a control valve is arranged on one end of the connecting pipe (9), and the other end is located inside the storage tank (7), and a mounting ring (10) is fixedly installed on one end of the detection probe (3), an annular groove is provided on the bottom of the mounting ring (10), and a movable rod is movably connected inside the annular groove. (11), a mounting block (12) is fixedly mounted on one end of the movable rod (11), the inner wall of the mounting block (12) is rotatably connected to the outer side of the detection probe (3), a groove is provided in the middle of the mounting block (12), a moving block (13) is slidably connected to the inner wall of the groove, a connecting block (14) is fixedly mounted on the bottom of the moving block (13), a first electric push rod (15) is fixedly mounted on the bottom of the connecting block (14), the bottom of the first electric push rod (15) is fixedly mounted to the inner wall of the bottom of the groove, both ends of the top of the moving block (13) are hinged with a rotating plate (16), one end of the rotating plate (16) is hinged with a fixed baffle (17), moving grooves are provided on both sides of the top of the mounting block (12), both sides of the fixed baffle (17) are rotatably connected to the inner wall of the moving groove, and a moving structure (18) is provided on one side of the first electric push rod (15) and located on the outer side of the bottom end of the mounting block (12).

2. The device for verifying and calibrating a meter for measuring dissolved oxygen in water or liquid according to claim 1, characterized in that: An oxygen solution is provided inside the storage tank (4), a photoelectric detection module is provided inside the detection probe (3), the detection probe (3) passes through the middle of one side of the fixed frame (5) and extends to the inside of the storage tank (7), and a protective cover (19) is provided on the detection probe (3) and is located at the bottom of the mobile structure (18).

3. The device for verifying and calibrating a meter for measuring dissolved oxygen in water or liquid according to claim 1, characterized in that: The fixed baffle plate (17) and the rotating plate (16) are both symmetrically arranged around the center of the moving block (13); a mounting groove is provided at the bottom of the fixed baffle plate (17); a second electric push rod (20) is fixedly installed inside the mounting groove; a fixed clamping block (21) is fixedly installed at one end of the second electric push rod (20); the fixed clamping block (21) is located inside the mounting groove and has a clamping groove provided on one side thereof.

4. The device for verifying and calibrating a meter for measuring dissolved oxygen in water or liquid according to claim 2, characterized in that: The moving structure (18) comprises a first rack (181), one side of the first rack (181) is fixedly mounted to the connecting block (14), one side of the first rack (181) is meshed with a gear (182), a rotating rod is fixedly mounted in the middle of the gear (182), one side of the gear (182) is meshed with a second rack (183), one side of the second rack (183) is fixedly mounted with a protective cover (184), a fixing groove is provided at the bottom of the protective cover (184), an electric telescopic rod (185) is fixedly mounted inside the fixing groove, and one end of the electric telescopic rod (185) is fixedly mounted with a supporting ring (186).

5. The device for verifying and calibrating a meter for measuring dissolved oxygen in water or liquid according to claim 4, characterized in that: The protective cover (184) is located at the bottom end of the mounting block (12); the first rack (181), the gear (182), and the second rack (183) are located between the protective cover (184) and the first electric push rod (15); the support ring (186) is located inside the fixing groove; the first rack (181), the gear (182), the rotating rod, the second rack (183), the electric telescopic rod (185), and the support ring (186) are all symmetrically arranged around the center of the mounting block (12).

6. The device for verifying and calibrating a meter for measuring dissolved oxygen in water or liquid according to claim 4, characterized in that: First magnetic blocks (22) are fixedly mounted on both sides of the middle of the second rack (183); the first magnetic blocks (22) are located on both sides of the gear (182); a movable opening is provided at the bottom of the second rack (183) and on the inner wall at the bottom of the groove; two second magnetic blocks (23) are fixedly mounted on the inner wall on one side of the movable opening; the first magnetic block (22) is magnetically connected to the second magnetic block (23).

7. The device for verifying and calibrating a meter for measuring dissolved oxygen in water or liquid according to claim 5, characterized in that: Both sides of the rotating rod are rotatably connected to fixed plates (24), the bottom of the fixed plates (24) is fixedly mounted to the inner wall of the groove, and both inner walls of the two sides of the protective cover (184) are provided with limiting grooves, and limiting blocks (25) are slidably connected inside the limiting grooves. The limiting blocks (25) are located below the groove, and one side of the limiting blocks is fixedly mounted to the outer wall of the bottom end of the mounting block (12).

8. The device for verifying and calibrating a meter for measuring dissolved oxygen in water or liquid according to claim 4, characterized in that: The protective cover (19) is threadedly connected to the outer side of the protective hood (184); a mounting opening is provided in the middle of the protective cover (19); a movable plate (26) is arranged inside the mounting opening; a fixing rod (27) is fixedly installed on the top of the movable plate (26); a cleaning block (28) is fixedly installed on the top of the fixing rod (27); a pressing block (29) is fixedly installed on the bottom of the movable plate (26); a telescopic rod (30) is fixedly installed on the top of the pressing block (29); a sliding groove is provided at the top of the telescopic rod (30) and located at the bottom of the protective cover (19); and the top of the telescopic rod (30) is slidably connected to the sliding groove.

9. The device for verifying and calibrating a meter for measuring dissolved oxygen in water or liquid according to claim 8, characterized in that: The pressing block (29) is located at the bottom of the protective cover (19), the telescopic rod (30) is symmetrically arranged on the left and right sides of the movable plate (26), the fixed rod (27) and the cleaning block (28) extend through the installation opening to the inside of the protective cover (19), and compression springs (31) are arranged on both sides of the fixed rod (27), one end of the compression spring (31) is fixedly installed on the bottom of the cleaning block (28), and the other end of the compression spring (31) is fixedly installed on the top of the movable plate (26), and the cleaning block (28) is arranged corresponding to the bottom of the detection probe (3).

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