Automatic detection and correction device for frost prevention type magnetic turning plate liquid level meter

Abstract

The invention discloses an automatic detection and correction device for a frost prevention type magnetic flap liquid level meter, and relates to the technical field of magnetic flap liquid level meter correction, the automatic detection and correction device for the frost prevention type magnetic flap liquid level meter comprises a liquid level meter body, a threaded shaft is rotatably mounted on one side of the liquid level meter body, and a ball sleeve is slidably mounted on the threaded shaft; a servo motor is installed at the top of the threaded shaft, a connecting rod is installed on a ball sleeve, an installing block is installed on the connecting rod, correction magnetic steel is installed on the installing block, a laser displacement sensor is installed at the top over a magnetic floater in the liquid level meter body, and the laser displacement sensor is electrically connected with the servo motor. When it is detected that the position of the magnetic floater is different from the display value of the magnetic turning plate, the servo motor is started, the servo motor drives the connecting rod on the ball sleeve to move through the threaded shaft, the connecting rod drives the correction magnetic steel on the installation block to synchronously move along with the ball sleeve, and the effect of automatic correction of the magnetic turning plate is achieved.

Description

Technical Field

[0001] This invention relates to the field of magnetic float level gauge calibration technology, specifically an anti-frost magnetic float level gauge automatic detection and calibration device. Background Technology

[0002] Magnetic level gauges are widely used in petroleum, chemical, and pharmaceutical industries due to their simple structure and intuitive operation. However, in low-temperature environments, the glass of magnetic level gauges is prone to frost formation, obstructing the view and leading to reading errors. Anti-frost magnetic level gauges, while retaining the intuitive and durable advantages of traditional magnetic level gauges, have upgraded their functionality to address the pain points of low-temperature environments. This reduces maintenance frequency and operational risks, as well as misjudgments caused by obstructed vision, indirectly improving production safety and efficiency. However, manual periodic calibration is still required to eliminate the effects of mechanical wear, environmental interference, and installation and maintenance deviations, ensuring the consistency of the float, the level gauge, the medium state, and the measurement reference, ultimately guaranteeing the accuracy of the level indication.

[0003] In the existing technology, the calibration of magnetic float level gauges is mostly done manually. However, manual calibration is difficult and often requires machine downtime, which affects production efficiency. Therefore, there is an urgent need for a calibration device with automatic detection and calibration functions. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic detection and calibration device for a frost-proof magnetic float level gauge, so as to solve the problems mentioned in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: The anti-frost magnetic float level gauge automatic detection and calibration device includes a level gauge body. An upper rotating frame and a lower rotating frame are mounted on one side of the level gauge body. A threaded shaft is rotatably mounted between the upper and lower rotating frames. A ball bearing sleeve is slidably mounted on the threaded shaft. A fixing plate is mounted on the top of the level gauge body. A servo motor is mounted on the fixing plate. The output shaft of the servo motor is connected to the top end of the threaded shaft via a coupling. A connecting rod is mounted on the ball bearing sleeve. A cylindrical sleeve is mounted on one end of the connecting rod. A slip ring is rotatably mounted on the cylindrical sleeve. A sliding rod is mounted on the other side of the level gauge body. The sliding rod has a groove, and the slip ring is slidably installed in the groove. The connecting rod is equipped with an mounting block, and the mounting block is equipped with a calibration magnet. A laser displacement sensor is installed directly above the magnetic float inside the level gauge body. The laser displacement sensor is electrically connected to the servo motor. When the laser displacement sensor detects a difference between the position of the magnetic float and the value displayed on the magnetic flip plate, the servo motor starts. The servo motor drives the threaded shaft at the output end to rotate, and then drives the connecting rod to move through the ball sleeve on the threaded shaft. Finally, the connecting rod drives the calibration magnet on the mounting block to move synchronously with the ball sleeve, thereby enabling the magnetic flip plate to adjust quickly and achieve the effect of automatic correction.

[0006] As a preferred technical solution, the calibration magnet is positioned directly above the observation window of the magnetic flip plate, and a gap is left between the calibration magnet and the level gauge body.

[0007] As a preferred technical solution, a cleaning component and a filtering component are also provided at the bottom of the level gauge body;

[0008] During the calibration process, the cleaning component cleans the magnetic flip observation window and scale on the level gauge body, and the filtration component filters and reuses the water returned after cleaning.

[0009] As a preferred technical solution, the cleaning component includes a mounting block, a cleaning chamber, an arc-shaped support rod, a semi-circular cleaning head, a cylindrical brush, a square water pipe, a hollow cylinder, a water outlet, and a rubber pad.

[0010] A cleaning chamber is provided on the side of the mounting block away from the connecting rod. Multiple arc-shaped support rods are installed within the cleaning chamber, and semi-circular cleaning heads are rotatably mounted at the ends of these rods. Cylindrical brushes are mounted on the flat surfaces of the semi-circular cleaning heads. A square water pipe is installed near the top of the cleaning chamber, and multiple hollow cylinders are evenly mounted on the square water pipe. Multiple water outlets are arrayed on the sidewalls of these hollow cylinders near the bottom. A rubber pad is fitted around the end of the sidewall of the cleaning chamber, and the rubber pad is in contact with the level gauge body. When the servo motor starts, the mounting block moves upward with the connecting rod. At this time, the semi-circular cleaning heads on the arc-shaped support rods, under the frictional force generated by their contact with the surface of the level gauge body, drive the cylindrical brushes to rotate. Simultaneously, water is sprayed out from the hollow cylinders above the cylindrical brushes, and the multiple water outlets evenly spray water onto the surface of the level gauge body. The rubber pads also seal the water, preventing it from flowing out of the cleaning chamber, thus achieving the cleaning of the magnetic flip observation window and scale on the level gauge body.

[0011] As a preferred technical solution, the semi-circular cleaning head has a certain pressure and comes into contact with the level gauge body.

[0012] As a preferred technical solution, the cleaning components also include a liquid storage cylinder, an upper chamber, a lower chamber, a reciprocating lead screw, a slider, a piston, a water outlet, an output pipe, a water inlet, an input pipe, and a water tank;

[0013] A liquid storage cylinder is installed at the bottom of the lower rotating frame. A reciprocating screw is rotatably installed inside the liquid storage cylinder. The smooth end of the reciprocating screw passes through the top of the liquid storage cylinder and connects to the bottom of the threaded shaft. A slider is slidably installed on the reciprocating screw, and the slider and the reciprocating screw form a threaded pair. A piston is installed on the slider, and the piston divides the liquid storage cylinder into an upper chamber and a lower chamber. Water outlets are opened at the top and bottom of the liquid storage cylinder, and the two water outlets are connected to the input end of the square water pipe through an output pipe. Two water inlets are opened on the side wall of the liquid storage cylinder away from the calibration magnet. A water tank is installed at the bottom of the level gauge body. The two water inlets are connected to the output end of the bottom of the water tank through an input pipe. When the servo motor is started, the threaded shaft drives the reciprocating screw to rotate. The rotation of the reciprocating screw causes the slider to drive the piston to slide up and down inside the liquid storage cylinder. The up and down movement of the piston causes the upper chamber and the lower chamber to work alternately, thereby continuously delivering water from the water tank to the square water pipe to achieve the water supply effect.

[0014] As a preferred technical solution, both the output pipe and the input pipe are unidirectional pipes.

[0015] As a preferred technical solution, the filter assembly includes a rotating bearing, a hollow shaft, a turntable, a filter element, a small pulley, a rotating joint, a large pulley, and a filter plate;

[0016] The water tank has a bearing hole at the top, in which a rotating bearing is installed. A hollow shaft is installed inside the rotating bearing, and a turntable is installed at the bottom of the hollow shaft. A filter element is installed at the bottom of the turntable. A filter plate is installed inside the water tank, positioned below the filter element. A rotating joint is installed at the top of the hollow shaft, and this joint is connected to the output end at the bottom of the cleaning chamber via a return water pipe. A small pulley is installed on the hollow shaft, and a large pulley is installed on the smooth extension end of the reciprocating screw. A belt is fitted between the large and small pulleys. While cleaning the level gauge body, the reciprocating screw drives the large pulley to rotate synchronously, which in turn drives the small pulley to rotate rapidly via the belt. This rotation of the small pulley drives the hollow shaft, which in turn drives the filter element at the bottom of the turntable to rotate. The centrifugal force generated by the rotation causes the filter element to eject clean water, leaving impurities inside. These impurities are then further filtered by the filter plate, thus achieving multi-stage filtration of clean water and realizing the purpose of water resource recycling.

[0017] As a preferred technical solution, the filter element and the filter plate have different filtration pore sizes.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. In this application, when the position of the magnetic float is detected by the laser displacement sensor and the value displayed on the magnetic flip plate is different, the servo motor is started. The servo motor drives the threaded shaft at the output end to rotate, and then drives the connecting rod to move through the ball sleeve on the threaded shaft. Finally, the connecting rod drives the correction magnet on the mounting block to move synchronously with the ball sleeve, thereby enabling the magnetic flip plate to adjust quickly and achieve the effect of automatic correction.

[0020] 2. This application uses a connecting rod to move the mounting block upwards. At this time, the semi-circular cleaning head on the arc-shaped support rod rotates the cylindrical brush under the frictional force generated by contact with the surface of the level gauge body. Simultaneously, the threaded shaft drives the reciprocating screw to rotate. The rotation of the reciprocating screw causes the slider to drive the piston to slide up and down in the storage cylinder. The piston moves up and down, causing the upper and lower chambers to work alternately, thereby continuously supplying water from the water tank to the square water pipe. The water flow is sprayed out from the hollow cylinder above the cylindrical brush. Under the action of multiple water outlets, the water flow is evenly sprayed on the surface of the level gauge body. At the same time, the sealing effect of the rubber gasket prevents water from flowing out of the cleaning chamber, thereby achieving the cleaning of the magnetic flip observation window and scale on the level gauge body.

[0021] 3. This application uses a reciprocating screw to drive a large pulley to rotate synchronously, and then a belt to drive a small pulley to rotate rapidly. The small pulley drives a hollow shaft to rotate, and the hollow shaft drives the filter element at the bottom of the turntable to rotate. The centrifugal force generated by the rotation causes the filter element to throw out clean water, while impurities remain inside the filter element. The water is then further filtered through the filter plate, thereby achieving multi-stage filtration of clean water and realizing the purpose of water resource recycling. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the assembly structure from a first-view perspective of the present invention;

[0023] Figure 2 This is a schematic diagram of the assembly structure from a second perspective according to the present invention;

[0024] Figure 3 This is a first-view structural diagram of the main body of the present invention;

[0025] Figure 4 This is a schematic diagram of the first partial cross-sectional structure of the main body of the present invention;

[0026] Figure 5 This is a schematic diagram of the second partial cross-sectional structure of the main body of the present invention;

[0027] Figure 6 for Figure 5 Enlarged structural diagram at point A;

[0028] Figure 7 for Figure 4 A magnified structural diagram at point B in the middle.

[0029] In the diagram: 1. Level gauge body; 101. Magnetic flip plate; 2. Upper rotating frame; 3. Lower rotating frame; 4. Threaded shaft; 5. Ball bearing sleeve; 6. Fixing plate; 7. Servo motor; 8. Coupling; 9. Connecting rod; 10. Cylindrical sleeve; 11. Slip ring; 12. Slide rod; 121. Slide groove; 13. Calibration magnet; 14. Laser displacement sensor;

[0030] 20. Cleaning assembly; 21. Mounting block; 22. Cleaning chamber; 23. Arc-shaped support rod; 24. Semi-circular cleaning head; 25. Cylindrical brush; 26. Square water pipe; 27. Hollow cylinder; 271. Water outlet; 28. Rubber pad; 29. ​​Liquid storage tank; 291. Upper chamber; 292. Lower chamber; 210. Reciprocating screw; 211. Slider; 212. Piston; 213. Water outlet; 214. Output pipe; 215. Water inlet; 216. Input pipe; 217. Water tank;

[0031] 30. Filter assembly; 31. Rotary bearing; 32. Hollow shaft; 33. Turntable; 34. Filter element; 35. Small pulley; 36. Rotary joint; 37. Large pulley; 38. Filter plate. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Example: Figures 1-5As shown, this invention provides a technical solution for an automatic detection and calibration device for an anti-frost magnetic float level gauge. The device includes a level gauge body 1. An upper rotating frame 2 and a lower rotating frame 3 are mounted on one side of the level gauge body 1. A threaded shaft 4 is rotatably mounted between the upper rotating frame 2 and the lower rotating frame 3. A ball bearing sleeve 5 is slidably mounted on the threaded shaft 4. A fixing plate 6 is mounted on the top of the level gauge body 1. A servo motor 7 is mounted on the fixing plate 6. The output shaft of the servo motor 7 is connected to the top end of the threaded shaft 4 via a coupling 8. A connecting rod 9 is mounted on the ball bearing sleeve 5. A cylindrical sleeve 10 is mounted on one end of the connecting rod 9. A slip ring 11 is rotatably mounted on the cylindrical sleeve 10. A sliding rod 12 is mounted on the other side of the level gauge body 1. The upper part has a sliding groove 121, and the slip ring 11 is slidably installed in the sliding groove 121. The connecting rod 9 is equipped with a mounting block 21, and the mounting block 21 is equipped with a calibration magnet 13. The laser displacement sensor 14 is installed directly above the magnetic float in the liquid level gauge body 1. The laser displacement sensor 14 is electrically connected to the servo motor 7. When the laser displacement sensor 14 detects that the position of the magnetic float is different from the value displayed by the magnetic flip plate 101, the servo motor 7 starts. The servo motor 7 drives the threaded shaft 4 at the output end to rotate, and then drives the connecting rod 9 to move through the ball sleeve 5 on the threaded shaft 4. Finally, the connecting rod 9 drives the calibration magnet 13 on the mounting block 21 to move synchronously with the ball sleeve 5, so that the magnetic flip plate 101 can be quickly adjusted to achieve the effect of automatic calibration.

[0034] The calibration magnet 13 is positioned directly above the observation window of the magnetic flip plate 101, and there is a gap between the calibration magnet 13 and the level gauge body 1.

[0035] The bottom of the level gauge body 1 is also equipped with a cleaning component 20 and a filter component 30;

[0036] During the calibration process, the cleaning component 20 cleans the magnetic flip observation window and scale on the level gauge body 1, and the filter component 30 filters and reuses the water that is returned after cleaning.

[0037] like Figure 1 , Figure 7 and Figures 3-5 As shown, the cleaning component 20 includes a mounting block 21, a cleaning chamber 22, an arc-shaped support rod 23, a semi-circular cleaning head 24, a cylindrical brush 25, a square water pipe 26, a hollow cylinder 27, a water outlet 271, and a rubber pad 28.

[0038] A cleaning chamber 22 is provided on the side of the mounting block 21 away from the connecting rod 9. Multiple arc-shaped support rods 23 are installed inside the cleaning chamber 22. Semi-circular cleaning heads 24 are rotatably mounted at the ends of the arc-shaped support rods 23. Cylindrical brushes 25 are mounted on the flat surface of the semi-circular cleaning heads 24. A square water pipe 26 is installed near the top of the cleaning chamber 22. Multiple hollow cylinders 27 are evenly installed on the square water pipe 26. Multiple water outlets 271 are arrayed on the sidewall of the hollow cylinders 27 near the bottom. A rubber pad 28 is fitted around the end of the sidewall of the cleaning chamber 22, and the rubber pad 28 is in contact with the level gauge body 1. When the servo motor 7 starts, the mounting block 21 moves upward with the connecting rod 9. At this time, the semi-circular cleaning head 24 on the arc-shaped support rod 23 drives the cylindrical brush 25 to rotate under the action of the friction generated by contact with the surface of the level gauge body 1. At the same time, water is sprayed out from the hollow cylinder 27 above the cylindrical brush 25. Under the action of multiple water outlets 271, the water is evenly sprayed on the surface of the level gauge body 1. At the same time, under the sealing action of the rubber pad 28, the water will not flow out of the cleaning chamber 22, thereby achieving the cleaning of the magnetic flip observation window and scale on the level gauge body 1.

[0039] The semi-circular cleaning head 24 is in contact with the level gauge body 1 under certain pressure.

[0040] like Figures 1-6 As shown, the cleaning assembly 20 also includes a liquid storage cylinder 29, an upper chamber 291, a lower chamber 292, a reciprocating screw 210, a slider 211, a piston 212, a water outlet 213, an output pipe 214, a water inlet 215, an input pipe 216, and a water tank 217.

[0041] A liquid storage cylinder 29 is installed at the bottom of the lower rotating frame 3. A reciprocating screw 210 is rotatably installed inside the liquid storage cylinder 29. The smooth end of the reciprocating screw 210 passes through the top of the liquid storage cylinder 29 and connects to the bottom of the threaded shaft 4. A slider 211 is slidably installed on the reciprocating screw 210, and the slider 211 and the reciprocating screw 210 form a threaded pair. A piston 212 is installed on the slider 211, which divides the liquid storage cylinder 29 into an upper chamber 291 and a lower chamber 292. Water outlet holes 213 are opened at the top and bottom of the liquid storage cylinder 29, respectively. The two water outlet holes 213 are connected to the input end of the square water pipe 26 through an output pipe 214. Two water inlets 215 are provided on the side wall of the cylinder 29 away from the calibration magnet 13. A water tank 217 is installed at the bottom of the level gauge body 1. The two water inlets 215 are connected to the output end of the bottom of the water tank 217 through the input pipe 216. When the servo motor 7 is started, the threaded shaft 4 drives the reciprocating screw 210 to rotate. The rotation of the reciprocating screw 210 causes the slider 211 to drive the piston 212 to slide up and down in the storage cylinder 29. The piston 212 moves up and down, causing the upper chamber 291 and the lower chamber 292 to work alternately, thereby continuously transporting water from the water tank 217 to the square water pipe 26 to achieve the water supply effect.

[0042] Both output tube 214 and input tube 216 are unidirectional pipes.

[0043] like Figure 5 and Figure 7 As shown, the filter assembly 30 includes a rotating bearing 31, a hollow shaft 32, a turntable 33, a filter element 34, a small pulley 35, a rotating joint 36, a large pulley 37, and a filter plate 38;

[0044] The water tank 217 has a bearing hole at the top, in which a rotating bearing 31 is installed. A hollow shaft 32 is installed inside the rotating bearing 31. A turntable 33 is installed at the bottom of the hollow shaft 32, and a filter element 34 is installed at the bottom of the turntable 33. A filter plate 38 is installed inside the water tank 217, positioned below the filter element 34. A rotating joint 36 is installed at the top of the hollow shaft 32, and the rotating joint 36 is connected to the output end at the bottom of the cleaning chamber 22 via a return water pipe. A small pulley 35 is installed on the hollow shaft 32, and a large pulley 35 is installed on the smooth extended end of the reciprocating screw 210. 7. A belt is fitted between the large pulley 37 and the small pulley 35. While cleaning the level gauge body 1, the reciprocating screw 210 drives the large pulley 37 to rotate synchronously. The belt drives the small pulley 35 to rotate rapidly. The small pulley 35 drives the hollow shaft 32 to rotate. The hollow shaft 32 drives the filter element 34 at the bottom of the turntable 33 to rotate. The centrifugal force generated by the rotation causes the filter element 34 to throw out clean water, while impurities remain in the filter element 34. The water is then further filtered by the filter plate 38, thus achieving multi-stage filtration of clean water and realizing the purpose of water resource recycling.

[0045] The filter element 34 and the filter plate 38 have different filtration pore sizes.

[0046] Working principle of the invention:

[0047] When the laser displacement sensor 14 detects a difference between the position of the magnetic float and the value displayed on the magnetic flip plate 101, the servo motor 7 starts. The servo motor 7 drives the threaded shaft 4 at the output end to rotate, and then drives the connecting rod 9 to move through the ball sleeve 5 on the threaded shaft 4. Finally, the connecting rod 9 drives the correction magnet 13 on the mounting block 21 to move synchronously with the ball sleeve 5, thereby enabling the magnetic flip plate 101 to adjust quickly and achieve the effect of automatic correction.

[0048] When the servo motor 7 starts, the mounting block 21 moves upward with the connecting rod 9. At this time, the semi-circular cleaning head 24 on the arc-shaped support rod 23 drives the cylindrical brush 25 to rotate under the friction generated by contact with the surface of the level gauge body 1. At the same time, water is sprayed out from the hollow cylinder 27 above the cylindrical brush 25. Under the action of multiple water outlets 271, the water is evenly sprayed on the surface of the level gauge body 1. At the same time, under the sealing action of the rubber pad 28, the water will not flow out of the cleaning chamber 22, thereby cleaning the magnetic flip observation window and scale on the level gauge body 1. When the servo motor 7 starts, the threaded shaft 4 drives the reciprocating screw 210 to rotate. The rotation of the reciprocating screw 210 causes the slider 211 to drive the piston 212 to slide up and down in the storage cylinder 29. The up and down movement of the piston 212 causes the upper chamber 291 and the lower chamber 292 to work alternately, thereby continuously transporting water from the water tank 217 to the square water pipe 26 to achieve the water supply effect.

[0049] While cleaning the level gauge body 1, the reciprocating screw 210 drives the large pulley 37 to rotate synchronously, which in turn drives the small pulley 35 to rotate rapidly via a belt. The small pulley 35 drives the hollow shaft 32 to rotate, which in turn drives the filter element 34 at the bottom of the turntable 33 to rotate. The centrifugal force generated by the rotation causes the filter element 34 to throw out clean water, while impurities remain inside the filter element 34. The water is then further filtered through the filter plate 38, thus achieving multi-stage filtration of clean water and realizing the purpose of water resource recycling.

[0050] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An automatic detection and calibration device for a frost-proof magnetic float level gauge, characterized in that: The anti-frost magnetic float level gauge automatic detection and calibration device includes a level gauge body (1). An upper rotating frame (2) and a lower rotating frame (3) are installed on one side of the level gauge body (1). A threaded shaft (4) is rotatably installed between the upper rotating frame (2) and the lower rotating frame (3). A ball bearing sleeve (5) is slidably installed on the threaded shaft (4). A fixing plate (6) is installed on the top of the level gauge body (1). A servo motor (7) is installed on the fixing plate (6). The output shaft of the servo motor (7) is connected to the end of the threaded shaft (4) near the top through a coupling (8). A connecting rod (9) is installed on the ball bearing sleeve (5). A cylindrical sleeve (10) is installed at one end of the connecting rod (9), and a slip ring (11) is rotatably installed on the cylindrical sleeve (10). A sliding rod (12) is installed on the other side of the liquid level gauge body (1). A sliding groove (121) is opened on the sliding rod (12), and the slip ring (11) is slidably installed in the sliding groove (121). An mounting block (21) is installed on the connecting rod (9), and a calibration magnet (13) is installed on the mounting block (21). A laser displacement sensor (14) is installed directly above the magnetic float inside the liquid level gauge body (1). The laser displacement sensor (14) is electrically connected to the servo motor (7).

2. The automatic detection and calibration device for an anti-frost magnetic level gauge according to claim 1, characterized in that: The calibration magnet (13) is located directly above the observation window of the magnetic flip plate (101), and there is a gap between the calibration magnet (13) and the liquid level gauge body (1).

3. The automatic detection and calibration device for an anti-frost magnetic level gauge according to claim 2, characterized in that: The bottom of the level gauge body (1) is also provided with a cleaning component (20) and a filter component (30); The cleaning component (20) cleans the magnetic flap observation window and scale on the level gauge body (1) during the calibration process, and the filter component (30) filters and reuses the water that is returned after cleaning.

4. The automatic detection and calibration device for an anti-frost magnetic level gauge according to claim 3, characterized in that: The cleaning assembly (20) includes a mounting block (21), a cleaning chamber (22), an arc-shaped support rod (23), a semi-circular cleaning head (24), a cylindrical brush (25), a square water pipe (26), a hollow cylinder (27), a water outlet (271), and a rubber pad (28). The mounting block (21) has a cleaning chamber (22) on the side away from the connecting rod (9). Multiple arc-shaped support rods (23) are installed in the cleaning chamber (22). Semi-circular cleaning heads (24) are rotatably installed at the ends of the multiple arc-shaped support rods (23). A cylindrical brush (25) is installed on the plane of the semi-circular cleaning head (24). A square water pipe (26) is installed near the top of the cleaning chamber (22). Multiple hollow cylinders (27) are evenly installed on the square water pipe (26). Multiple water outlets (271) are arrayed on the side wall of the hollow cylinder (27) near the bottom. A rubber pad (28) is fitted at the end of the side wall of the cleaning chamber (22), and the rubber pad (28) is in contact with the liquid level gauge body (1).

5. The automatic detection and calibration device for an anti-frost magnetic level gauge according to claim 4, characterized in that: The semi-circular cleaning head (24) is in contact with the liquid level gauge body (1) under certain pressure.

6. The automatic detection and calibration device for an anti-frost magnetic level gauge according to claim 5, characterized in that: The cleaning assembly (20) also includes a liquid storage tank (29), an upper chamber (291), a lower chamber (292), a reciprocating screw (210), a slider (211), a piston (212), a water outlet (213), an output pipe (214), a water inlet (215), an input pipe (216), and a water tank (217); A liquid storage cylinder (29) is installed at the bottom of the lower rotating frame (3). A reciprocating screw (210) is rotatably installed inside the liquid storage cylinder (29). The smooth end of the reciprocating screw (210) passes through the top of the liquid storage cylinder (29) and connects to the bottom of the threaded shaft (4). A slider (211) is slidably installed on the reciprocating screw (210), and the slider (211) and the reciprocating screw (210) form a threaded pair. A piston (212) is installed on the slider (211), and the piston (212) divides the liquid storage cylinder (29) into an upper chamber (29). 1) and lower chamber (292), the top and bottom of the liquid storage cylinder (29) are respectively provided with water outlet holes (213), the two water outlet holes (213) are connected to the input end of the square water pipe (26) through the output pipe (214), the side wall of the liquid storage cylinder (29) away from the calibration magnet (13) is provided with two water inlets (215), the bottom of the liquid level gauge body (1) is equipped with a water tank (217), the two water inlets (215) are connected to the output end of the bottom of the water tank (217) through the input pipe (216).

7. The automatic detection and calibration device for an anti-frost magnetic level gauge according to claim 6, characterized in that: Both the output pipe (214) and the input pipe (216) are unidirectional pipes.

8. The automatic detection and calibration device for an anti-frost magnetic level gauge according to claim 7, characterized in that: The filter assembly (30) includes a bearing (31), a hollow shaft (32), a turntable (33), a filter element (34), a small pulley (35), a rotary joint (36), a large pulley (37), and a filter plate (38); The water tank (217) has a bearing hole at the top, a rotating bearing (31) is installed in the bearing hole, a hollow shaft (32) is installed in the rotating bearing (31), a turntable (33) is installed at the bottom of the hollow shaft (32), a filter element (34) is installed at the bottom of the turntable (33), a filter plate (38) is installed in the water tank (217), the filter plate (38) is below the filter element (34), a rotating joint (36) is installed at the top of the hollow shaft (32), the rotating joint (36) is connected to the output end at the bottom of the cleaning chamber (22) through a return water pipe, a small pulley (35) is installed on the hollow shaft (32), a large pulley (37) is installed on the smooth extended end of the reciprocating screw (210), and a belt is fitted between the large pulley (37) and the small pulley (35).

9. The automatic detection and calibration device for an anti-frost magnetic level gauge according to claim 8, characterized in that: The filter element (34) and the filter plate (38) have different filtration pore sizes.

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