An online water quality monitor with automatic calibration function

Abstract

A water quality online monitor with automatic calibration function comprises: a height control mechanism, a sampling mechanism, a detection mechanism, a calibration mechanism and an exhaust mechanism; by setting the height control mechanism and adjusting the amount of water stored in a water storage tank, the position of the device in the water is adjusted to make the device sink or float, thereby avoiding the repetitive work of frequently pulling the device out of the water and adding weights, thereby improving work efficiency; by setting the calibration mechanism, after the detection device has worked for a period of time, the value of the detection device in the detection mechanism is adjusted, so that the accuracy of the detection device can be restored to the correct level, thereby ensuring the accuracy of the detection data.

Description

Technical Field

[0001] The invention relates to the field of water quality detection, and in particular to an online water quality monitor with an automatic calibration function. Background Art

[0002] Water quality monitoring is the process of monitoring and measuring the types of pollutants in water bodies, the concentrations of various pollutants and their changing trends, and evaluating the water quality status; the purpose of monitoring is: regular monitoring of surface water and groundwater, monitoring of production and life processes, emergency monitoring of accidents, providing data and information for environmental management and providing data and information for environmental science research; for this purpose, the Chinese invention with application number: CN112798390B discloses a remotely controllable online water quality monitor, including a shell, a processor module, a data transmission module, a detection box, a water quality detection instrument and a remote operation terminal, a filter box is installed above the left side of the inner cavity of the shell, a through groove is penetrated on the right side of the filter box, a box body is arranged inside the filter box, a filter screen is penetrated on the surface of the bottom of the box body, and a blocking plate is bolted to the right side of the box body;

[0003] Through the study of the above invention, it was found that the invention can only filter the sampled water, but cannot automatically calibrate. After a certain number of uses, the monitor will have inaccurate detection data. Therefore, we need to invent an online water quality monitor that can automatically calibrate the monitor after a period of use to confirm the accuracy of the detection data. Summary of the invention

[0004] In view of the above problems, the present invention provides an online water quality monitor with an automatic calibration function. By setting a height control mechanism and adjusting the amount of water stored in the water tank, the position of the device in the water is adjusted to make the equipment sink or float, thereby avoiding the repetitive work of frequently pulling the equipment out of the water and adding weights, thereby improving work efficiency. By setting a calibration mechanism, when the detection equipment has been working for a period of time, the value of the detection equipment in the detection mechanism is adjusted, so that the accuracy of the detection equipment can be restored to the correct level, thereby ensuring the accuracy of the detection data.

[0005] An online water quality monitor with automatic calibration function, comprising: a height control mechanism, a sampling mechanism, a detection mechanism, a calibration mechanism and an exhaust mechanism;

[0006] The device is provided with a height control mechanism at the bottom, which is screwed with the lower baffle in the sampling mechanism through a rotating joint, the outer wall of the sampling mechanism is fixed above the lower baffle, the upper part of the outer wall of the sampling mechanism is fixed with the upper baffle, other parts of the sampling mechanism are arranged inside the outer wall of the sampling mechanism, the upper part of the upper baffle is fixed with the outer wall of the calibration mechanism in the calibration mechanism, other parts of the calibration mechanism are arranged inside the outer wall of the calibration mechanism, the upper part of the outer wall of the calibration mechanism is fixed with the fixed box of the detection mechanism, the fixed box is fixed with a cylinder A, the telescopic end of the cylinder A is fixed with a detection rod, the telescopic end of the cylinder A pushes the detection rod to move downward, and transmits the detection result to the controller, the controller is fixed on the top of the fixed box and is covered with a cover;

[0007] An air pump of the exhaust mechanism is also fixed in the fixed box, and the air pump is connected to the exhaust pipe. The exhaust pipe passes through the fixed box, the outer wall of the calibration mechanism and the upper baffle and is connected to the control barrel arranged in the outer wall of the sampling mechanism. The exhaust holes and air supply holes on the control barrel need to be exhausted and supplied through the exhaust grooves and air supply grooves on the outer wall of the sampling mechanism.

[0008] Further, the sampling mechanism includes: a motor, a screw rod, an internal thread block, a control block, an upper baffle, an outer wall of the sampling mechanism, an inner wall of the sampling mechanism, a sampling barrel, an F-shaped plate, a closing plug, a backflow valve, a lower baffle, a lower pressure column, a trapezoidal block and a plug controller;

[0009] The motor is fixed inside the fixed box, the motor shaft of the motor is fixed together with the screw rod, the screw rod passes through the fixed box, and an internal thread block is slidably installed below the screw rod, the internal thread block is fixed together with the control block, four F-shaped plates are fixed below the control block, a sampling barrel and a plug controller are fixed on each of the F-shaped plates, the sampling barrel and the plug controller are fixed together, the plug controller is located below the sampling barrel, a plug is provided inside the plug controller, the F-shaped plate is slidably installed on the inner wall of the sampling mechanism, four closing plugs are slidably installed in the holes on the side of the inner wall of the sampling mechanism, a spring is provided between the closing plug and the inner wall of the sampling mechanism, the head of the closing plug is provided in the hole of the outer wall of the sampling mechanism, the tail of the closing plug is slidably installed in the groove of the trapezoidal block, the upper part of the trapezoidal block is fixed to the lower pressure column, the outer wall of the sampling mechanism and the lower part of the inner wall of the sampling mechanism are fixed to the lower baffle, a plurality of reverse flow valves are provided on the lower baffle, and the upper part of the outer wall of the sampling mechanism is fixed to the upper baffle.

[0010] Furthermore, the upper baffle is provided with a plurality of openings, the shape of the openings is the same as the projection shape of the F-shaped plate, and the openings of the upper baffle are arranged above the F-shaped plate, and each opening corresponds to an F-shaped plate.

[0011] Furthermore, the plug in the plug controller is made of waterproof rubber material.

[0012] Further, the detection mechanism includes: a cover, a fixing box, a cylinder A, a ring bracket, a detection device, a detection rod, a controller and a signal line;

[0013] A pull ring is provided on the top of the cover, and the bottom of the cover is fixed to a fixed box. A controller is fixed to the top of the fixed box, and the controller is connected to four signal lines. Each signal line passes through the fixed box and is connected to a detection device. The detection device is fixed to a detection rod at the bottom, and the detection device is fixed to an annular bracket at the top. The top of the annular bracket is fixed to the telescopic end of the cylinder A. The cylinder A is fixed to the bottom inside the fixed box, and its telescopic end passes through the fixed box and is fixed to the annular bracket.

[0014] Furthermore, the calibration mechanism includes: an outer wall of the calibration mechanism, a connecting slider, a rotating sleeve and a detection box; the upper part of the outer wall of the calibration mechanism is fixed to the fixed box, and the lower part is fixed to the upper baffle plate; a slide groove is provided on the inner wall of the outer wall of the calibration mechanism, and a connecting slider is slidably installed on the slide groove; the connecting slider is fixed to the control block; the rotating sleeve is rotatably installed in the slide groove at the bottom of the outer wall of the calibration mechanism; a detection box is fixed on the rotating sleeve; a slide groove is provided on the rotating sleeve; and the protrusion on the connecting slider is slidably installed on the slide groove of the rotating sleeve.

[0015] Since the present invention adopts the above technical solution, the present invention has the following advantages:

[0016] (1) This device is equipped with a height control mechanism. Unlike ordinary equipment that uses additional weights to make the device sink, when this device needs to sink, the water pump sucks water into the water tank, and the amount of water sucked in controls the sinking distance of the device. When the device needs to float, the drainage pump discharges the water in the water tank, and then makes the device float. This design is more efficient and the position of the device can be adjusted without pulling the device out of the water to add or remove weights.

[0017] (2) This device is equipped with a calibration mechanism. After the device has been used for a period of time, the accuracy of the detection mechanism will be greatly reduced. If the measurement continues, the measured data will have a large error. At this time, the detection mechanism is used to detect the data of the standard liquid in the detection box in the calibration mechanism, and then the value of the detection device in the detection mechanism is adjusted through the controller, so that the accuracy of the detection device can be restored to the correct level, thereby ensuring the accuracy of the detection data. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1-2 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 3-5 It is a structural schematic diagram of the height control mechanism of the present invention.

[0020] Figure 6-11 It is a structural schematic diagram of the sampling mechanism of the present invention.

[0021] Figure 12-14 It is a structural schematic diagram of the detection mechanism of the present invention.

[0022] Figure 15-17 It is a structural schematic diagram of the calibration mechanism of the present invention.

[0023] Figure 18-20 It is a schematic structural diagram of the exhaust mechanism of the present invention.

[0024] Figure numbers: 1-height control mechanism; 2-sampling mechanism; 3-detection mechanism; 4-calibration mechanism; 5-exhaust mechanism; 101-water storage tank; 102-rotating joint; 103-water suction pump; 104-drainage pump; 201-motor; 202-screw rod; 203-internal thread block; 204-control block; 205-upper baffle; 206-sampling mechanism outer wall; 207-sampling mechanism inner wall; 208-sampling barrel; 209-F-shaped plate; 210-closing plug; 211-reverse flow valve; 212-lower baffle; 2 13-downward pressure column; 214-trapezoidal block; 215-plug controller; 301-cover; 302-fixed box; 303-cylinder A; 304-ring bracket; 305-detection equipment; 306-detection rod; 307-controller; 308-signal line; 401-outer wall of calibration mechanism; 402-connecting slider; 403-rotating sleeve; 404-detection box; 501-air pump; 502-exhaust pipe; 503-cylinder B; 504-control barrel; 505-exhaust groove; 506-air supply groove. DETAILED DESCRIPTION

[0025] The technical solution of the present invention is further specifically described below by way of embodiments and in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0026] Examples, such as Figure 1-20 As shown, an online water quality monitor with automatic calibration function comprises: a height control mechanism 1, a sampling mechanism 2, a detection mechanism 3, a calibration mechanism 4 and an exhaust mechanism 5;

[0027] The device is provided with a height control mechanism 1 at the bottom, which is screwed together with the lower baffle plate 212 in the sampling mechanism 2 through a rotating joint 102, the sampling mechanism outer wall 206 is fixed above the lower baffle plate 212, the upper part of the sampling mechanism outer wall 206 is fixed together with the upper baffle plate 205, other components of the sampling mechanism 2 are arranged inside the sampling mechanism outer wall 206, the upper part of the upper baffle plate 205 is fixed together with the calibration mechanism outer wall 401 in the calibration mechanism 4, other components of the calibration mechanism 4 are arranged inside the calibration mechanism outer wall 401, the upper part of the calibration mechanism outer wall 401 is fixed together with the fixed box 302 of the detection mechanism 3, the fixed box 302 is fixed with a cylinder A303, the telescopic end of the cylinder A303 is fixed with a detection rod 306, the telescopic end of the cylinder A303 pushes the detection rod 306 to move downward, and transmits the detection result to the controller 307, the controller 307 is fixed on the top of the fixed box 302, and is shielded by a cover 301;

[0028] An air pump 501 of the exhaust mechanism 5 is also fixed in the fixed box 302. The air pump 501 is connected to the exhaust pipe 502. The exhaust pipe 502 passes through the fixed box 302, the outer wall 401 of the calibration mechanism and the upper baffle 205 and is connected to the control barrel 504 arranged in the outer wall 206 of the sampling mechanism. The exhaust holes and air supply holes on the control barrel 504 need to be exhausted and supplied through the exhaust grooves 505 and the air supply grooves 506 on the outer wall 206 of the sampling mechanism.

[0029] When the device needs to be used, first place the device in the water that needs to be monitored, and then the height control mechanism 1 can adjust the height of the device in the water by adjusting the amount of water in its own water tank 101. The water suction pump 103 sucks water into the water tank 101. The position of the device in the water is controlled by the sucked water, which is convenient for monitoring water quality at different positions. When the device needs to be floated, the drainage pump 104 discharges the water in the water tank 101, and then the device floats. When the position is determined, the sampling mechanism 2 is activated to make the water there flow into the sampling barrel 208 in the sampling mechanism 2. When the sampling is completed, the sampling barrel 208 in the sampling mechanism 2 moves up, and the detection mechanism 3 moves down, and the detection rod 306 extends into the sampling barrel 208 to complete the detection of the water sample. When the detection is completed, the exhaust mechanism 5 removes the water in the water storage space in the sampling mechanism 2 to prepare for the next sampling. When the device has been used for a long time, it can be calibrated by the calibration mechanism 4 to ensure the accuracy of the detection data.

[0030] In an optional implementation manner of the embodiment of the present invention, as Figure 6-11As shown, the sampling mechanism 2 includes: a motor 201, a screw rod 202, an internal thread block 203, a control block 204, an upper baffle plate 205, an outer wall 206 of the sampling mechanism, an inner wall 207 of the sampling mechanism, a sampling barrel 208, an F-shaped plate 209, a closing plug 210, a reverse flow valve 211, a lower baffle plate 212, a lower pressure column 213, a trapezoidal block 214 and a plug controller 215;

[0031] The motor 201 is fixed inside the fixed box 302, the motor shaft of the motor 201 is fixed to the screw rod 202, the screw rod 202 passes through the fixed box 302, and an internal thread block 203 is slidably installed below the screw rod 202, the internal thread block 203 is fixed to the control block 204, four F-shaped plates 209 are fixed below the control block 204, each of the F-shaped plates 209 is fixed with a sampling barrel 208 and a plug controller 215, the sampling barrel 208 and the plug controller 215 are fixed together, the plug controller 215 is located below the sampling barrel 208, a plug is provided inside the plug controller 215, and the F-shaped plate 209 is slidably installed On the inner wall 207 of the sampling mechanism, four closing plugs 210 are slidably installed in the holes on the side of the inner wall 207 of the sampling mechanism, a spring is arranged between the closing plug 210 and the inner wall 207 of the sampling mechanism, the head of the closing plug 210 is arranged in the hole of the outer wall 206 of the sampling mechanism, the tail of the closing plug 210 is slidably installed in the groove of the trapezoidal block 214, the upper part of the trapezoidal block 214 is fixed to the lower pressure column 213, the lower part of the outer wall 206 of the sampling mechanism and the inner wall 207 of the sampling mechanism are both fixed to the lower baffle 212, a plurality of reverse flow valves 211 are arranged on the lower baffle 212, and the upper part of the outer wall 206 of the sampling mechanism is fixed to the upper baffle 205;

[0032] When sampling and testing is required, the motor 201 drives the screw rod 202 to rotate, thereby driving the internal thread block 203 to move, thereby driving the control block 204 to move, and then driving the F-shaped plate 209 to move, and then driving the sampling barrel 208 to move. When the control block 204 moves to the specified position, the control block 204 contacts the lower pressure column 213, and the control block 204 then moves, driving the lower pressure column 213 to move, and then driving the trapezoidal block 214 to move, thereby driving the closing plug 210 to move inward through the inclined slide groove of the trapezoidal block 214. When the control block 204 stops moving, the closing plug 210 opens and no longer blocks the water inlet hole. External water flows from the hole at the closing plug 210 into the water storage space between the outer wall 206 of the sampling mechanism and the inner wall 207 of the sampling mechanism. When the inflowing water reaches a certain height, the water will submerge the sampling barrel 208. At this time, the water flows into the sampling barrel 208. When the sampling barrel 208 After it is full, the motor 201 drives the screw rod 202 to reverse, thereby driving the control block 204 to move upward, the trapezoidal block 214 and the lower pressure column 213 gradually move upward under the action of the spring, and then drive the closing plug 210 to block the water inlet hole, the control block 204 drives the F-shaped plate 209 to move up to the specified position, and then drives the sampling barrel 208 to move to the specified position. At this time, the middle baffle of the F-shaped plate 209 coincides with the upper baffle 205 of the sampling mechanism 2. At this time, the detection rod 306 extends into the sampling barrel 208 for detection. When the detection is completed, the control block 204 then moves upward to drive the F-shaped plate 209 to move. When the lower baffle of the F-shaped plate 209 coincides with the upper baffle 205 of the sampling mechanism 2, the upper baffle 205 presses the plug controller 215 downward, and the plug no longer blocks the lower end of the sampling barrel 208, thereby opening the drainage hole of the sampling barrel 208, and then draining the water in the sampling barrel 208 for the next use.

[0033] In an optional implementation manner of the embodiment of the present invention, as Figure 12-14 As shown, the detection mechanism 3 includes: a cover 301, a fixing box 302, a cylinder A303, a ring bracket 304, a detection device 305, a detection rod 306, a controller 307 and a signal line 311;

[0034] A pull ring is provided on the top of the cover 301, and the cover 301 is fixed to the fixed box 302 at the bottom. A controller 307 is fixed on the top of the fixed box 302. The controller 307 is connected to four signal lines 311, and each signal line 311 passes through the fixed box 302 and is connected to a detection device 305. The detection device 305 is fixed to the detection rod 306 at the bottom, and the detection device 305 is fixed to the annular bracket 304 at the top. The top of the annular bracket 304 is fixed to the telescopic end of the cylinder A303, and the cylinder A303 is fixed to the bottom of the fixed box 302, and its telescopic end passes through the fixed box 302 and is fixed to the annular bracket 304; when the sampling barrel 208 moves to the specified position, the cylinder A303 extends out, driving the detection rod 306 to extend into the sampling barrel 208, and the detection device 305 starts to detect the water sample, and transmits the detected data to the controller 307 through the signal line 311, and sends the data to the terminal through the device in the controller 307, so as to facilitate data collection and analysis.

[0035] In an optional implementation manner of the embodiment of the present invention, as Figure 15-17 As shown, the calibration mechanism 4 includes: a calibration mechanism outer wall 401, a connecting slider 402, a rotating sleeve 403 and a detection box 404;

[0036] The outer wall 401 of the calibration mechanism is fixed to the fixed box 302 at the top and to the upper baffle 205 at the bottom. A slide groove is provided on the inner wall of the outer wall 401 of the calibration mechanism, and a connecting slider 402 is slidably installed on the slide groove. The connecting slider 402 is fixed to the control block 204. The rotating sleeve 403 is rotatably installed in the slide groove at the bottom of the outer wall 401 of the calibration mechanism. A detection box 404 is fixed on the rotating sleeve 403. The rotating sleeve 403 is provided with a slide groove, and the protrusion on the connecting slider 402 is slidably installed on the slide groove of the rotating sleeve 403.

[0037] When the control block 204 moves down to the specified position, the protrusion on the connecting slider 402 slides into the groove on the inner side of the rotating sleeve 403, and the control block 204 then moves down, driving the rotating sleeve 403 to rotate through the connecting slider 402. When the control block 204 stops moving, the rotating sleeve 403 rotates to the specified position. At this time, the detection box 404 containing the standard liquid moves to the specified position, and the cylinder A303 extends to drive the detection device 305 to move down, thereby extending the detection rod 306 into the detection box 404 for detection, and calibrating the detection device 305 through the controller 307.

[0038] In an optional implementation manner of the embodiment of the present invention, as Figure 18-20 As shown, the exhaust mechanism 5 includes: an air pump 501, an exhaust pipe 502, a cylinder B 503, a control barrel 504, an exhaust groove 505 and an air supply groove 506;

[0039] The air pump 501 is fixed to the bottom of the fixed box 302, and the air pump 501 is connected to the exhaust pipe 502. The exhaust pipe 502 passes through the outer wall 401 of the calibration mechanism of the fixed box 302 and the upper baffle 205 and is connected to the control barrel 504. The control barrel 504 is arranged in the outer wall 206 of the sampling mechanism. The control barrel 504 is fixed to the telescopic end of the cylinder B503, and the cylinder B503 is fixed in the outer wall 206 of the sampling mechanism. The control barrel 504 is provided with an exhaust hole and an air supply hole, and an exhaust groove 505 is provided at the exhaust hole, and an air supply groove 506 is provided at the air supply hole. The exhaust groove 505 and the air supply groove 506 are both arranged on the outer wall 206 of the sampling mechanism; after the water in the sampling barrel 208 undergoes the detection process At this time, the water in the water storage space in the sampling mechanism 2 needs to be discharged, the air pump 501 starts to work and starts to supply air, the cylinder B503 under the control barrel 504 retracts, driving the control barrel 504 to move downward, so that the air supply hole on the inside of the control barrel 504 coincides with the air supply groove 506, and the gas flows into the water storage space from the air supply groove 506, and then the water in the water storage space is discharged from the position of the reverse flow valve 211. When the device needs to take samples, the cylinder B503 extends out, so that the exhaust hole on the outside of the control barrel 504 coincides with the exhaust groove 505, and then the gas is discharged from the exhaust groove 505, and then the impact of the gas drives the device to rotate, thereby mixing the water outside the device with the majority of the water, and then making the sampling more accurate.

[0040] It should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left” and “right” are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention.

Claims

1. An online water quality monitor with automatic calibration function, characterized in that: include: A height control mechanism (1), a sampling mechanism (2), a detection mechanism (3), a calibration mechanism (4) and an exhaust mechanism (5); The device is provided with a height control mechanism (1) at the bottom, the height control mechanism (1) being screwed together with a lower baffle (212) in the sampling mechanism (2) via a rotating joint (102), a sampling mechanism outer wall (206) being fixed above the lower baffle (212), the sampling mechanism outer wall (206) being fixed together with an upper baffle (205) above the sampling mechanism outer wall (206), other components of the sampling mechanism (2) being arranged inside the sampling mechanism outer wall (206), the upper baffle (205) being fixed together with a calibration mechanism outer wall (401) in the calibration mechanism (4), the calibration mechanism The outer wall (401) is provided with other components of the calibration mechanism (4). The upper part of the outer wall (401) of the calibration mechanism is fixed to the fixed box (302) of the detection mechanism (3). The fixed box (302) is fixed with a cylinder A (303). The telescopic end of the cylinder A (303) is fixed with a detection rod (306). The telescopic end of the cylinder A (303) pushes the detection rod (306) to move downward and transmits the detection result to the controller (307). The controller (307) is fixed to the top of the fixed box (302) and is covered by a cover (301). An air pump (501) of the exhaust mechanism (5) is also fixed in the fixed box (302), the air pump (501) is connected to an exhaust pipe (502), the exhaust pipe (502) passes through the fixed box (302), the outer wall (401) of the calibration mechanism and the upper baffle (205), and is connected to a control barrel (504) disposed in the outer wall (206) of the sampling mechanism, and the exhaust holes and air supply holes on the control barrel (504) need to be exhausted and supplied through the exhaust grooves (505) and the air supply grooves (506) on the outer wall (206) of the sampling mechanism; The sampling mechanism (2) comprises: a motor (201), a screw rod (202), an internal thread block (203), a control block (204), an upper baffle (205), an outer wall of the sampling mechanism (206), an inner wall of the sampling mechanism (207), a sampling barrel (208), an F-shaped plate (209), a sealing plug (210), a reverse flow valve (211), a lower baffle (212), a lower pressure column (213), a trapezoidal block (214), and a plug controller (215); The motor (201) is fixed inside the fixing box (302); the motor shaft of the motor (201) is fixed together with the screw rod (202); the screw rod (202) passes through the fixing box (302); an internal thread block (203) is slidably mounted below the screw rod (202); the internal thread block (203) is fixed together with the control block (204); four F-shaped plates (209) are fixed below the control block (204); a sampling barrel (208) and a plug controller (215) are fixed on each of the F-shaped plates (209); the sampling barrel (208) and the plug controller (215) are fixed together; the plug controller (215) is located below the sampling barrel (208); a plug is provided inside the plug controller (215); the F-shaped plates (20 9) being slidably mounted on the inner wall (207) of the sampling mechanism, four closing plugs (210) being slidably mounted in holes on the side of the inner wall (207) of the sampling mechanism, a spring being arranged between the closing plug (210) and the inner wall (207) of the sampling mechanism, the head of the closing plug (210) being arranged in a hole of the outer wall (206) of the sampling mechanism, the tail of the closing plug (210) being slidably mounted in a groove of a trapezoidal block (214), the upper part of the trapezoidal block (214) being fixed to a lower pressure column (213), the lower parts of the outer wall (206) of the sampling mechanism and the inner wall (207) of the sampling mechanism being fixed to a lower baffle (212), a plurality of reverse flow valves (211) being arranged on the lower baffle (212), and the upper part of the outer wall (206) of the sampling mechanism being fixed to an upper baffle (205); The calibration mechanism (4) comprises: a calibration mechanism outer wall (401), a connecting slider (402), a rotating sleeve (403) and a detection box (404); The upper part of the outer wall (401) of the calibration mechanism is fixed to the fixed box (302), and the lower part is fixed to the upper baffle (205). A sliding groove is provided on the inner wall of the outer wall (401) of the calibration mechanism, and a connecting slider (402) is slidably mounted on the sliding groove. The connecting slider (402) is fixed to the control block (204). The rotating sleeve (403) is rotatably mounted in the sliding groove at the bottom of the outer wall (401) of the calibration mechanism. A detection box (404) is fixed on the rotating sleeve (403). The rotating sleeve (403) is provided with a sliding groove, and the protrusion on the connecting slider (402) is slidably mounted on the sliding groove of the rotating sleeve (403).

2. According to claim 1, an online water quality monitor with automatic calibration function, characterized in that: The upper baffle plate (205) is provided with a plurality of openings, the shape of the openings being the same as the projection shape of the F-shaped plate (209), and the openings of the upper baffle plate (205) are arranged above the F-shaped plate (209), and each opening corresponds to an F-shaped plate (209).

3. According to claim 2, an online water quality monitor with automatic calibration function, characterized in that: The plug in the plug controller (215) is made of waterproof rubber material.

4. According to claim 1, an online water quality monitor with automatic calibration function, characterized in that: The detection mechanism (3) comprises: a cover (301), a fixing box (302), a cylinder A (303), a ring bracket (304), a detection device (305), a detection rod (306), a controller (307) and a signal line (311); A pull ring is provided on the top of the cover (301). The bottom of the cover (301) is fixed to a fixed box (302). A controller (307) is fixed to the top of the fixed box (302). The controller (307) is connected to four signal lines (311). Each signal line (311) passes through the fixed box (302) and is connected to a detection device (305). The bottom of the detection device (305) is fixed to a detection rod (306). The top of the detection device (305) is fixed to an annular bracket (304). The top of the annular bracket (304) is fixed to the telescopic end of a cylinder A (303). The cylinder A (303) is fixed to the bottom of the fixed box (302), and the telescopic end thereof passes through the fixed box (302) and is fixed to the annular bracket (304).

5. According to claim 1, an online water quality monitor with automatic calibration function, characterized in that: The exhaust mechanism (5) comprises: an air pump (501), an exhaust pipe (502), a cylinder B (503), a control barrel (504), an exhaust groove (505) and an air supply groove (506); The air pump (501) is fixed to the bottom of the fixed box (302). The air pump (501) is connected to the exhaust pipe (502). The exhaust pipe (502) passes through the outer wall (401) of the calibration mechanism of the fixed box (302) and the upper baffle (205) to be connected to the control barrel (504). The control barrel (504) is arranged in the outer wall (206) of the sampling mechanism. The control barrel (504) is fixed to the telescopic end of the cylinder B (503). The cylinder B (503) is fixed in the outer wall (206) of the sampling mechanism. The control barrel (504) is provided with an exhaust hole and an air supply hole. The exhaust hole is provided with an exhaust groove (505). The air supply hole is provided with an air supply groove (506). The exhaust groove (505) and the air supply groove (506) are both arranged on the outer wall (206) of the sampling mechanism.

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