Sensor self-cleaning device based on water quality monitoring

Abstract

The present invention discloses a sensor self-cleaning device based on water quality monitoring, which relates to the technical field of sensor cleaning. It solves the problem that algae attached to the side wall of the sensor probe and the branch pipe will swing in the water body along the direction of the water flow, which will cause the water quality monitoring sensor to capture wrong signals during measurement and affect the measurement accuracy. The device comprises a sensor body, a wire is fixedly installed on the upper end of the sensor body, and the end of the wire away from the sensor body is connected to a water quality monitoring host, and also comprises a protective box installed on the upper side of the sensor body, and a fixing seat is fixedly installed inside the protective box. The present invention is conducive to the silicone scraper ring to scrape off impurities and algae attached to the side wall of the sensor body by installing a cleaning mechanism and a connecting component, so as to prevent the algae on the side wall of the sensor body from affecting the measurement accuracy of the sensor body, and the silicone scraper ring will move to the upper side of the sensor body after cleaning is completed, and will not cause any influence on the sensor body.

Description

Technical Field

[0001] The present invention relates to the technical field of sensor cleaning, and in particular to a sensor self-cleaning device based on water quality monitoring. Background Art

[0002] Water quality monitoring sensors are instruments for detecting water quality parameters. They include measuring devices for various physical quantities and electronic circuit parts. Water quality monitoring sensors are usually composed of sensing elements, conversion elements, and signal processing. Common sensors include: pressure type, capacitance type, inductance type, and photoelectric type. During the use of water quality sensors, suspended matter, algae, or other organisms in the water will adhere to the sensor, affecting the accuracy of the measurement, so the water quality monitoring sensor needs to be cleaned regularly.

[0003] The existing Chinese patent CN210358290U discloses an automatic cleaning device for water quality monitoring sensors, which uses air jets or water sprays or water-gas cross cleaning methods to clean the sensors, and is suitable for various sensor probes. However, during the use of the above device, the branch pipe is installed on the outside of the sensor probe, and the outlet at the tail end of the branch pipe is aligned with the sensor probe, resulting in that when cleaning the sensor probe, only the area on the sensor probe where the outlet at the tail end of the branch pipe is aligned can be cleaned, and algae will also be attached to the side walls of the sensor probe and the branch pipe. These algae attached to the side walls of the sensor probe and the branch pipe will swing in the water body with the direction of the water flow, causing the water quality monitoring sensor to capture erroneous signals during measurement, affecting the measurement accuracy, thereby making the cleaning range of the water quality monitoring sensor by the device smaller and the cleaning effect poorer. Summary of the invention

[0004] The purpose of the present invention is to provide a sensor self-cleaning device based on water quality monitoring to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A sensor self-cleaning device based on water quality monitoring includes a sensor body, a wire is fixedly installed on the upper end of the sensor body, and the end of the wire away from the sensor body is connected to a water quality monitoring host, and also includes a protection box installed on the upper side of the sensor body, a fixing seat is fixedly installed inside the protection box, and the connection between the fixing seat and the sensor body is a fixed connection; a cleaning mechanism, used for cleaning impurities and algae attached to the side wall of the sensor body, the cleaning mechanism is installed on the outer side of the sensor body; a scraping component, used for scraping impurities and algae on the bottom surface of the sensor body and the cleaning mechanism, the scraping component is installed on the lower side of the cleaning mechanism; a driving component, used for driving the scraping component to move downward, the driving component is installed between the cleaning mechanism and the scraping component.

[0007] Preferably, the cleaning mechanism includes a connecting plate movably sleeved on the outside of the sensor body, and the inner ring diameter of the connecting plate is larger than the diameter of the sensor body, a silicone scraper ring is fixedly installed on the inner side of the connecting plate, and the inner ring diameter of the silicone scraper ring is equal to the diameter of the sensor body, the silicone scraper ring moves downward on the outside of the sensor body, and can scrape off impurities and algae attached to the outside of the sensor body, an auxiliary rod and a hollow screw are fixedly installed on the upper end of the connecting plate, and the auxiliary rod and the hollow screw are respectively located on the left and right sides of the sensor body, a sleeve is movably sleeved on the outside of the auxiliary rod, and the connection between the sleeve and the protective box is a fixed connection.

[0008] Preferably, two symmetrically distributed ball bearings are movably embedded on the inner wall of the sleeve, and the ball bearings are in rolling contact with the auxiliary rod through rolling straight grooves, and the upper end of the hollow screw is fixedly connected with an annular baffle 1, and the annular baffle 1 is used to limit the downward movement distance of the hollow screw, and the outer side of the hollow screw is connected with a threaded sleeve corresponding to the internal thread of the protective box, and the outer side of the threaded sleeve is movably connected with a gear 1, and the outer side of the threaded sleeve is fixedly connected with two symmetrically distributed annular baffles 2, and the two annular baffles 2 are respectively located on the upper and lower sides of the gear 1.

[0009] Preferably, a plurality of short connecting rods equidistantly distributed around the circumference are fixedly installed on the upper end of the gear one, and the upper end of the short connecting rod is fixedly connected to the gear two, a avoidance hole is opened in the center of the gear two, and the diameter of the avoidance hole is larger than the diameter of the annular baffle plate one, and the avoidance hole is used to avoid the annular baffle plate one, and a support ring is fixedly installed on the lower end of the gear one, and a positioning seat is fixedly installed on the interior of the protective box corresponding to the outer side of the support ring, and the support ring is rotatably connected to the positioning seat through the bearing two, and a gear three is cooperated with the outer side of the gear two, and a motor is fixedly installed on the upper end of the gear three, and the connection between the motor and the protective box is a fixed connection.

[0010] Preferably, a plurality of circumferentially equidistantly distributed connection components are installed between the threaded sleeve and the gear one, and the connection component includes a sleeve fixedly embedded in the gear one, a pin rod is movably embedded in one end of the sleeve close to the threaded sleeve, and a hemispherical portion one is provided at one end of the pin rod close to the threaded sleeve, and the end of the sleeve away from the pin rod is in a closed state.

[0011] Preferably, one end of the pin rod located inside the sleeve is fixedly connected to a gasket, a side of the gasket 1 away from the pin rod is movably abutted against a spring 1, and one end of the spring 1 away from the gasket 1 is movably abutted against the sleeve, gasket 1 is used to prevent the pin rod from escaping from the sleeve, a plurality of hemispherical grooves equidistantly distributed around the circumference are provided on the outer side of the threaded sleeve, and a hemispherical portion 1 of the pin rod is movably engaged with the threaded sleeve through the hemispherical grooves.

[0012] Preferably, the scraping assembly includes a spline rod installed on the lower side of the connecting plate, and the spline rod is concentric with the hollow screw, a rubber ring is fixedly sleeved on the outer side of the spline rod, and the connection between the rubber ring and the connecting plate is a rotating connection, the rubber ring cannot move up and down inside the connecting plate, and is used to prevent the spline rod from rotating on its own, a gasket 2 is fixedly connected to the lower end of the spline rod, a connecting seat is movably sleeved on the outer side of the spline rod, the connecting seat cannot rotate on the outer side of the spline rod, and a spring 2 is also movably sleeved on the outer side of the spline rod.

[0013] Preferably, the two ends of the second spring are respectively movably abutted against the second gasket and the connecting seat, the second gasket is used to position the lower end of the second spring, an arc-shaped support strip is fixedly installed on the outer side of the connecting seat, an arc-shaped scraper strip is fixedly embedded on the upper end of the arc-shaped support strip, and the connection between the arc-shaped scraper strip and the sensor body, the connecting plate and the silicone scraper ring is a sliding contact, and the arc-shaped support strip, the arc-shaped scraper strip and the silicone scraper ring are concentric.

[0014] Preferably, a long connecting rod is fixedly embedded at the center of the upper end of the spline rod, and the long connecting rod is movably installed inside the hollow screw, the upper end of the long connecting rod is fixedly connected to a disc, the lower end of the disc is fixedly embedded with a flexible pad, the upper end of gear 2 is fixedly embedded with a plurality of pointed cones equidistantly distributed around the circumference, and the connection between the plurality of pointed cones and the flexible pad is a movable abutment, and the flexible pad is made of silicone.

[0015] Preferably, the driving assembly includes a hemisphere fixedly mounted on the upper end of the arc-shaped support strip, and the hemisphere is located between the connecting seat and the arc-shaped scraper strip, the arc-shaped scraper strip is made of silicone, and a plurality of top rods equidistantly distributed are fixedly embedded in the lower end of the connecting plate, a hemisphere part 2 is provided at the lower end of the top rod, and the connection between the hemisphere and the hemisphere part 2 is a movable abutment.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention installs a cleaning mechanism and a connecting component. The gear in the cleaning mechanism drives the threaded sleeve to rotate through the connecting component, which can drive the hollow screw and the silicone scraper ring to move up and down on the outside of the sensor body, thereby facilitating the silicone scraper ring to scrape off impurities and algae attached to the side wall of the sensor body, preventing the algae on the side wall of the sensor body from affecting the measurement accuracy of the sensor body, and the silicone scraper ring will move to the upper side of the sensor body after cleaning is completed, and will not cause any impact on the sensor body.

[0018] 2. The present invention installs a scraping assembly. After the pointed cone in the scraping assembly presses against the flexible pad, it is beneficial for the long connecting rod, the spline rod and the arc-shaped scraping strip to rotate. The arc-shaped scraping strip can scrape off impurities and algae on the silicone scraper ring and the lower end surface of the sensor body during the rotation process. It can not only clean the lower end surface of the sensor body, but also prevent impurities and algae from moving up with the silicone scraper ring and covering the outside of the sensor body.

[0019] 3. The present invention uses a driving component. The hemispherical body in the driving component can be flexibly offset with the hemispherical parts of multiple top rods during the rotation of the arc-shaped support bar. Cooperating with the drive of the compression elastic force of the spring, it is beneficial to make the arc-shaped support bar and the arc-shaped scraper bar swing back and forth up and down in the water body, thereby facilitating the separation of impurities and algae from the arc-shaped scraper bar under the action of the water flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is an overall schematic diagram of the present invention;

[0021] Figure 2 It is a side sectional schematic diagram of the present invention;

[0022] Figure 3 This is a schematic diagram of removing the protective box of the present invention;

[0023] Figure 4 It is a schematic diagram of the silicone scraper ring in the cleaning mechanism of the present invention moving to the lower end of the sensor body;

[0024] Figure 5 It is a schematic diagram of the connection between the cleaning mechanism and the scraping component of the present invention;

[0025] Figure 6 It is a side cross-sectional schematic diagram of the cleaning mechanism, scraping assembly and connecting assembly of the present invention;

[0026] Figure 7 It is a schematic diagram of the side section of gear 1, gear 2 and the connecting assembly of the present invention;

[0027] Figure 8 It is a schematic bottom side view of the scraping assembly of the present invention being disassembled.

[0028] In the figure: 1. sensor body; 2. wire; 3. protection box; 4. fixing seat; 5. connecting plate; 6. silicone scraper ring; 7. auxiliary rod; 8. hollow screw; 9. annular baffle plate 1; 10. threaded sleeve; 11. gear 1; 12. annular baffle plate 2; 13. short connecting rod; 14. gear 2; 15. avoidance hole; 16. sleeve; 17. pin rod; 18. gasket 1; 19. spring 1; 20. , hemispherical slot; 21, spline rod; 22, gasket two; 23, connecting seat; 24, spring two; 25, arc support strip; 26, arc scraper strip; 27, long connecting rod; 28, disc; 29, flexible pad; 30, pointed cone; 31, hemispherical body; 32, push rod; 33, support ring; 34, positioning seat; 35, sleeve; 36, ball; 37, gear three; 38, motor; 39, rubber ring. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Example 1: Please refer to Figure 1-Figure 5 , Figure 7 The sensor self-cleaning device based on water quality monitoring shown in the figure includes a sensor body 1, a wire 2 is fixedly installed on the upper end of the sensor body 1, and the end of the wire 2 away from the sensor body 1 is connected to the water quality monitoring host, and also includes a protection box 3 installed on the upper side of the sensor body 1, a fixing seat 4 is fixedly installed inside the protection box 3, and the connection between the fixing seat 4 and the sensor body 1 is a fixed connection; a cleaning mechanism, used to clean impurities and algae attached to the side wall of the sensor body 1, and the cleaning mechanism is installed on the outer side of the sensor body 1; a scraping component, used to scrape impurities and algae on the bottom surface of the sensor body 1 and the cleaning mechanism, and the scraping component is installed on the lower side of the cleaning mechanism; a driving component, used to drive the scraping component to move downward, and the driving component is installed between the cleaning mechanism and the scraping component.

[0031] The cleaning mechanism includes a connecting plate 5 movably sleeved on the outside of the sensor body 1, and the inner ring diameter of the connecting plate 5 is larger than the diameter of the sensor body 1, a silicone scraper ring 6 is fixedly installed on the inner side of the connecting plate 5, and the inner ring diameter of the silicone scraper ring 6 is equal to the diameter of the sensor body 1, the silicone scraper ring 6 moves downward on the outside of the sensor body 1, and can scrape off impurities and algae attached to the outside of the sensor body 1, an auxiliary rod 7 and a hollow screw 8 are fixedly installed on the upper end of the connecting plate 5, and the auxiliary rod 7 and the hollow screw 8 are respectively located on the left and right sides of the sensor body 1, a sleeve 35 is movably sleeved on the outside of the auxiliary rod 7, and the connection between the sleeve 35 and the protective box 3 is a fixed connection.

[0032] Two symmetrically distributed balls 36 are movably embedded on the inner wall of the sleeve 35, and the balls 36 are in rolling contact with the auxiliary rod 7 through the rolling straight groove. The upper end of the hollow screw 8 is fixedly connected with an annular baffle 9, and the annular baffle 9 is used to limit the downward movement distance of the hollow screw 8. The outer side of the hollow screw 8 is connected with a threaded sleeve 10 corresponding to the internal thread of the protective box 3, and the outer side of the threaded sleeve 10 is movably connected with a gear 11. The outer side of the threaded sleeve 10 is fixedly connected with two symmetrically distributed annular baffles 2 12, and the two annular baffles 2 12 are respectively located on the upper and lower sides of the gear 11.

[0033] A plurality of short connecting rods 13 equidistantly distributed around the circumference are fixedly mounted on the upper end of the gear 11, a gear 2 14 is fixedly connected to the upper end of the short connecting rod 13, a avoidance hole 15 is provided at the center of the gear 2 14, and the diameter of the avoidance hole 15 is larger than the diameter of the annular baffle 1 9, the avoidance hole 15 is used to avoid the annular baffle 9, a support ring 33 is fixedly mounted on the lower end of the gear 11, a positioning seat 34 is fixedly mounted on the inner side of the protective box 3 corresponding to the outer side of the support ring 33, and the support ring 33 is rotatably connected to the positioning seat 34 through the bearing 2, a gear 37 is mounted on the outer side of the gear 2 14, a motor 38 is fixedly mounted on the upper end of the gear 3 37, and the connection between the motor 38 and the protective box 3 is a fixed connection.

[0034] A plurality of circumferentially equidistantly distributed connection components are installed between the threaded sleeve 10 and the gear 11, and the connection components include a sleeve 16 fixedly embedded in the gear 11, a pin 17 is movably embedded in one end of the sleeve 16 close to the threaded sleeve 10, and a hemispherical portion 1 is provided at one end of the pin 17 close to the threaded sleeve 10, and the end of the sleeve 16 away from the pin 17 is in a closed state.

[0035] One end of the pin rod 17 located inside the sleeve 16 is fixedly connected to a gasket 18, and the side of the gasket 18 away from the pin rod 17 is movably abutted against a spring 19, and the end of the spring 19 away from the gasket 18 is movably abutted against the sleeve 16. The gasket 18 is used to prevent the pin rod 17 from escaping from the sleeve 16. The outer side of the threaded sleeve 10 is provided with a plurality of hemispherical grooves 20 equidistantly distributed around the circumference, and the hemispherical portion of the pin rod 17 is movably engaged with the threaded sleeve 10 through the hemispherical grooves 20.

[0036] Working principle: The sensor body 1 is located in the monitored water body, and the protection box 3 is located above the water body (the protection box 3 can be fixed on a pile inserted in the water body), and the sensor body 1 monitors the water body in real time;

[0037] When it is necessary to clean the impurities and algae on the outside of the sensor body 1, the motor 38 drives the gear 2 14 to rotate through the gear 3 37, and the gear 2 14 drives the gear 1 11 to rotate through the short connecting rod 13. Since the hemispherical portion 1 of the pin 17 is embedded in the hemispherical slot 20 driven by the compression elastic force of the spring 19, the gear 11 will drive the threaded sleeve 10 to rotate through the pin 17 when it rotates. Since the hollow screw 8 is fixedly connected to the connecting plate 5, the threaded sleeve 10 will drive the hollow screw 8 and the silicone scraper ring 6 to move up and down when it rotates. During the downward movement of the hollow screw 8 and the silicone scraper ring 6, the silicone scraper ring 6 is in friction contact with the outer wall of the sensor body 1, which can scrape off the impurities and algae attached to the outside of the sensor body 1 and prevent the algae attached to the side wall of the sensor body 1 from affecting the measurement accuracy of the sensor body 1. After the silicone scraper ring 6 completes the cleaning of the side wall of the sensor body 1, the hollow screw 8 will drive the silicone scraper ring 6 to move up and reset, so it will not cause any impact on the sensor body 1.

[0038] Example 2: Please refer to Figure 6-Figure 8 The present embodiment further explains the first embodiment. The scraping assembly includes a spline rod 21 installed on the lower side of the connecting plate 5, and the spline rod 21 is concentric with the hollow screw 8. A rubber ring 39 is fixedly sleeved on the outer side of the spline rod 21, and the connection between the rubber ring 39 and the connecting plate 5 is a rotating connection. The rubber ring 39 cannot move up and down inside the connecting plate 5, and is used to prevent the spline rod 21 from rotating by itself. A gasket 22 is fixedly connected to the lower end of the spline rod 21, and a connecting seat 23 is movably sleeved on the outer side of the spline rod 21. The connecting seat 23 cannot rotate on the outer side of the spline rod 21, and a spring 24 is also movably sleeved on the outer side of the spline rod 21.

[0039] The two ends of the spring 24 are respectively movably abutted against the gasket 22 and the connecting seat 23. The gasket 22 is used to position the lower end of the spring 24. An arc-shaped support strip 25 is fixedly installed on the outer side of the connecting seat 23. An arc-shaped scraper strip 26 is fixedly embedded on the upper end of the arc-shaped support strip 25. The connection between the arc-shaped scraper strip 26 and the sensor body 1, the connecting plate 5, and the silicone scraper ring 6 is a sliding contact. The arc-shaped support strip 25, the arc-shaped scraper strip 26 and the silicone scraper ring 6 are concentric.

[0040] A long connecting rod 27 is fixedly embedded at the center of the upper end of the spline rod 21, and the long connecting rod 27 is movably installed inside the hollow screw 8, a disc 28 is fixedly connected to the upper end of the long connecting rod 27, and a flexible pad 29 is fixedly embedded at the lower end of the disc 28, and a plurality of pointed cones 30 equidistantly distributed around the circumference are fixedly embedded at the upper end of the gear 2 14, and the connection between the plurality of pointed cones 30 and the flexible pad 29 is a movable abutment, and the flexible pad 29 is made of silicone.

[0041] In this embodiment: when the annular baffle 1 9 moves down with the hollow screw 8 and abuts against the threaded sleeve 10, the multiple sharp cones 30 on the upper end of the gear 2 14 will abut against the flexible pad 29, and the hollow screw 8 and the silicone scraper ring 6 cannot move further downward. The gear 2 14 can drive the long connecting rod 27, the spline rod 21 and the arc scraper 26 to rotate through the multiple sharp cones 30 and the flexible pad 29. In this process, since the hollow screw 8 cannot move further downward, the threaded sleeve 10 cannot rotate on the outside of the hollow screw 8. At this time The hemispherical portion of the pin 17 will be disengaged from the hemispherical slot 20 during the rotation of the gear 11, that is, the gear 11 will idle outside the threaded sleeve 10, and the arc-shaped scraper 26 will slide in contact with the bottom surface of the sensor body 1 and the silicone scraper ring 6 during the rotation, and can scrape off the impurities and algae on the silicone scraper ring 6 and the lower end surface of the sensor body 1, which can not only clean the lower end surface of the sensor body 1, but also prevent the impurities and algae from moving up with the silicone scraper ring 6 and covering the outer side of the sensor body 1;

[0042] When the arc scraper 26 rotates several times as set and returns to its initial position, the hemispherical portion 1 of the pin 17 is embedded in the corresponding hemispherical groove 20, and the motor 38 drives the gear 11 and the gear 2 14 to rotate in the opposite direction through the gear 3 37. The gear 11 drives the threaded sleeve 10 to rotate in the opposite direction through the pin 17, which drives the hollow screw 8, the silicone scraper ring 6 and the arc scraper 26 to move up and reset.

[0043] Example 3: Please refer to Figure 8This embodiment further explains the first embodiment. The driving assembly includes a hemispherical body 31 fixedly mounted on the upper end of the arc-shaped support bar 25, and the hemispherical body 31 is located between the connecting seat 23 and the arc-shaped scraper strip 26. The arc-shaped scraper strip 26 is made of silicone. A plurality of equidistantly distributed top rods 32 are fixedly embedded at the lower end of the connecting plate 5. A hemispherical part 2 is provided at the lower end of the top rod 32, and the connection between the hemispherical body 31 and the hemispherical part 2 is a movable abutment.

[0044] In this embodiment: after the arc scraper 26 rotates to separate from the silicone scraper ring 6, the hemispherical body 31 will abut against the hemispherical part 2 of the top rod 32, and as the connecting seat 23 continues to rotate, the hemispherical part 2 of the top rod 32 will drive the connecting seat 23 and the arc scraper 26 to move downward through the hemispherical body 31; when the hemispherical body 31 rotates to separate from the hemispherical part 2 of the top rod 32, the connecting seat 23 and the arc scraper 26 will move upward and reset under the drive of the compression force of the spring 2 24, and so on, so that the arc scraper 26 can swing back and forth up and down as it continues to rotate after rotating away from the silicone scraper ring 6, thereby facilitating the separation of impurities and algae from the arc scraper 26 under the action of the water flow.

[0045] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sensor self-cleaning device based on water quality monitoring, comprising a sensor body (1), a wire (2) being fixedly mounted on the upper end of the sensor body (1), and an end of the wire (2) away from the sensor body (1) being connected to a water quality monitoring host, characterized in that: Also includes: A protection box (3) is mounted on the upper side of the sensor body (1), a fixing seat (4) is fixedly mounted inside the protection box (3), and the fixing seat (4) and the sensor body (1) are connected in a fixed manner; A cleaning mechanism, used for cleaning impurities and algae attached to the side wall of the sensor body (1), the cleaning mechanism being installed on the outside of the sensor body (1); A scraping assembly, used for scraping impurities and algae from the sensor body (1) and the bottom surface of the cleaning mechanism, the scraping assembly being mounted on the lower side of the cleaning mechanism; A driving assembly, used for driving the scraping assembly to move downward, wherein the driving assembly is installed between the cleaning mechanism and the scraping assembly; The cleaning mechanism comprises a connecting plate (5) movably sleeved on the outside of the sensor body (1), a silicone scraper ring (6) is fixedly mounted on the inner side of the connecting plate (5), an auxiliary rod (7) and a hollow screw (8) are respectively fixedly mounted on the upper end of the connecting plate (5), a sleeve (35) is movably sleeved on the outer side of the auxiliary rod (7), and the sleeve (35) is connected to the protective box (3) in a fixed manner; The scraping assembly comprises a spline rod (21) mounted on the lower side of the connecting plate (5), a rubber ring (39) is fixedly sleeved on the outer side of the spline rod (21), a second gasket (22) is fixedly connected to the lower end of the spline rod (21), a connecting seat (23) is movably sleeved on the outer side of the spline rod (21), and a second spring (24) is also movably sleeved on the outer side of the spline rod (21); The driving assembly comprises a hemispherical body (31), a plurality of equidistantly distributed top rods (32) are fixedly embedded at the lower end of the connecting plate (5), and a second hemispherical portion is provided at the lower end of the top rod (32); The spline rod (21) is concentric with the hollow screw rod (8), and the connection between the rubber ring (39) and the connecting plate (5) is a rotational connection; The two ends of the second spring (24) are respectively movably abutted against the second gasket (22) and the connecting seat (23); an arc-shaped support strip (25) is fixedly mounted on the outer side of the connecting seat (23); an arc-shaped scraper strip (26) is fixedly embedded on the upper end of the arc-shaped support strip (25); and the arc-shaped scraper strip (26) is connected to the sensor body (1), the connecting plate (5), and the silicone scraper ring (6) in a sliding contact manner; the arc-shaped support strip (25), the arc-shaped scraper strip (26), and the silicone scraper ring (6) are concentric.

2. The sensor self-cleaning device based on water quality monitoring according to claim 1 is characterized in that: The inner diameter of the connecting plate (5) is larger than the diameter of the sensor body (1), the inner diameter of the silicone scraper ring (6) is equal to the diameter of the sensor body (1), and the auxiliary rod (7) and the hollow screw (8) are respectively located on the left and right sides of the sensor body (1).

3. The sensor self-cleaning device based on water quality monitoring according to claim 2 is characterized in that: Two symmetrically distributed balls (36) are movably embedded on the inner wall of the sleeve (35), and the balls (36) are in rolling contact with the auxiliary rod (7) through rolling straight grooves. An annular baffle plate 1 (9) is fixedly connected to the upper end of the hollow screw (8). A threaded sleeve (10) is sleeved on the outer side of the hollow screw (8) corresponding to the internal thread of the protective box (3). A gear 1 (11) is movably sleeved on the outer side of the threaded sleeve (10). Two symmetrically distributed annular baffle plates 2 (12) are fixedly sleeved on the outer side of the threaded sleeve (10), and the two annular baffle plates 2 (12) are respectively located on the upper and lower sides of the gear 1 (11).

4. The sensor self-cleaning device based on water quality monitoring according to claim 3 is characterized in that: A plurality of short connecting rods (13) equidistantly distributed on a circumference are fixedly mounted on the upper end of the gear one (11); a gear two (14) is fixedly connected to the upper end of the short connecting rod (13); a avoidance hole (15) is provided at the center of the gear two (14); and the diameter of the avoidance hole (15) is larger than the diameter of the annular baffle plate one (9); a support ring (33) is fixedly mounted on the lower end of the gear one (11); a positioning seat (34) is fixedly mounted inside the protection box (3) corresponding to the outer side of the support ring (33); and the support ring (33) is rotatably connected to the positioning seat (34) via a bearing two; a gear three (37) is cooperatingly mounted on the outer side of the gear two (14); a motor (38) is fixedly mounted on the upper end of the gear three (37); and the connection between the motor (38) and the protection box (3) is a fixed connection.

5. The sensor self-cleaning device based on water quality monitoring according to claim 3 is characterized in that: A plurality of connection components are installed between the threaded sleeve (10) and the gear one (11) and are equidistantly distributed around the circumference. The connection components include a sleeve (16) fixedly embedded in the interior of the gear one (11), a pin rod (17) being movably embedded at one end of the sleeve (16) close to the threaded sleeve (10), and a hemispherical portion one being provided at one end of the pin rod (17) close to the threaded sleeve (10).

6. The sensor self-cleaning device based on water quality monitoring according to claim 5 is characterized in that: One end of the pin rod (17) located inside the sleeve (16) is fixedly connected to a gasket 1 (18); a side of the gasket 1 (18) away from the pin rod (17) is movably abutted against a spring 1 (19); and an end of the spring 1 (19) away from the gasket 1 (18) is movably abutted against the sleeve (16); a plurality of hemispherical grooves (20) equidistantly distributed around a circumference are formed on the outer side of the threaded sleeve (10); and a hemispherical portion 1 of the pin rod (17) is movably engaged with the threaded sleeve (10) via the hemispherical grooves (20).

7. The sensor self-cleaning device based on water quality monitoring according to claim 1 is characterized in that: A long connecting rod (27) is fixedly embedded at the center of the upper end of the spline rod (21), and the long connecting rod (27) is movably installed inside the hollow screw rod (8). A disc (28) is fixedly connected to the upper end of the long connecting rod (27), and a flexible pad (29) is fixedly embedded at the lower end of the disc (28). A plurality of pointed cones (30) equidistantly distributed on a circumference are fixedly embedded at the upper end of the gear 2 (14), and the connection between the plurality of pointed cones (30) and the flexible pad (29) is a movable abutment.

8. The sensor self-cleaning device based on water quality monitoring according to claim 1, characterized in that: The hemispherical body (31) is located between the connecting seat (23) and the arc-shaped scraper strip (26), and the connection between the hemispherical body (31) and the second hemispherical part is a movable abutment.

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