Radar level meter convenient to operate

Abstract

The invention belongs to the technical field of level meters, and provides a radar level meter convenient to operate, the radar level meter comprises a level meter body, a flange plate and a horn antenna, the level meter body and the horn antenna are both fixedly installed on the flange plate, the flange plate is provided with a bottom plate, and the flange plate is provided with a control assembly for adjusting the position angle of the bottom plate. The invention relates to a horn antenna cleaning device, in particular to a horn antenna cleaning device, and aims at solving the technical problem that in the prior art, the horn antenna cleaning effect is poor due to the fact that a cleaning structure exerts pressure tightly pressed on the surface of a horn antenna on dust. And then air is blown to the side wall of the horn antenna from the first air bag for cleaning. The horn antenna cleaning device can be widely applied to cleaning operation scenes of horn structures.

Description

Technical Field

[0001] The invention belongs to the technical field of level meters, and in particular relates to a radar level meter which is easy to operate. Background Art

[0002] Radar level meters are suitable for measuring the filling level of items contained in storage tanks, such as process fluids, granular compounds and other materials.

[0003] After measuring the filling level of powdered materials in some storage tanks, some impurities are easily adhered to the surface and inside of the horn antenna of the level meter. If they are not cleaned in time, the accuracy of the next measurement will be affected. In response to the above technical problems, the Chinese patent with patent announcement number CN116818044B uses an outer scraper and an inner scraper to clean the horn antenna along the surface of the horn antenna when in use. However, since the inner and outer scrapers slide on the surface of the horn antenna, and due to the problems of the quality flatness of the scraper and the flatness of the horn antenna itself, the scraper cannot completely fit the surface of the horn antenna. During the sliding process of the inner and outer scrapers, some dust will enter the contact surface between the scraper and the horn antenna. At this time, the dust will be adhered to the surface of the horn antenna under the action of the scraper pressure, thereby reducing the cleaning effect of the horn antenna. At the same time, dust will also accumulate on the surface of the inner and outer scrapers that contact the horn antenna when not in use. In subsequent use, the dust will also adhere to the surface of the horn antenna under the action of the scraper pressure, thereby reducing the cleaning effect of the horn antenna. Summary of the invention

[0004] The object of the present invention is to provide a radar level meter that is easy to operate, aiming to solve the technical problem in the prior art that the cleaning structure exerts pressure on the surface of the horn antenna to press the dust, resulting in poor cleaning effect of the horn antenna.

[0005] The present invention is implemented as follows: a radar level meter that is easy to operate includes a level meter body, a flange and a horn antenna, wherein the level meter body and the horn antenna are fixedly mounted on the flange, a bottom plate is arranged on the flange, and a control component for adjusting the position angle of the bottom plate is arranged on the flange; A placing tube is provided on the base plate, and the side of the placing tube away from the base plate is an open structure and a through hole is provided in the middle of the bottom surface of the placing tube close to the base plate, a first air bag is fixedly installed in the placing tube, and first blowing holes are provided in multiple areas on the first air bag, an air pump for conveying air to the first air bag is fixedly installed on the base plate, a mounting ring is rotatably installed on the flange, the mounting ring is coaxially arranged with the horn antenna and a cleaning box is fixedly installed on the mounting ring, the cleaning box is connected with the placing tube and a second blowing hole is provided on the surface of the cleaning box parallel to the side wall of the horn antenna, a power component for driving the placing tube to rotate is provided on the base plate, and a coaxially arranged closed ring is rotatably installed on the outer side surface of the placing tube.

[0006] Further technical solution: The control component includes a telescopic part, which is fixedly mounted on the flange and perpendicular to the flange. A mounting plate is fixedly mounted on the output end of the telescopic part, and a base plate is rotatably mounted on the mounting plate. A first rotating power part that drives the base plate to rotate is fixedly mounted on the mounting plate.

[0007] Further technical solution: the outer side edge of the first airbag is fixedly connected to the side edge of the placement tube, the inner side edge of the first airbag is fixedly connected to the inner bottom surface of the placement tube around the through hole, the first airbag and the placement tube form a closed area, and the part protruding from the placement tube after the first airbag is filled with air is a truncated cone structure, and a channel connected to the through hole is provided in the middle.

[0008] Further technical solution: The first blowing hole is located on the inclined side wall after the first airbag is filled with air. After the first airbag is filled with air and enters the horn antenna, its inclined side wall is parallel to the side wall of the horn antenna. A gap is set between the first airbag, the horn antenna and the flange.

[0009] Further technical solution: Multiple groups of second airbags are fixedly installed inside the first airbag, the positions of the second airbags correspond to the positions of the first blowing holes, the second airbags cover the area where the first blowing holes are distributed, the second airbags are connected to a second air inlet pipe, and a one-way valve is provided on the second air inlet pipe.

[0010] Further technical solution: a coaxially arranged rotating tube is fixedly installed at the bottom of the placement tube, the rotating tube passes through the bottom plate and is rotatably installed on the bottom plate, the through hole is located in the rotating tube and an exhaust fan is fixedly installed in the rotating tube.

[0011] Further technical solution: the air pump is connected to a connecting chamber fixedly installed on the base plate, the connecting chamber is connected to a connecting pipe, the vertical section of the connecting pipe is coaxially arranged with the rotating tube and the end of the vertical section of the connecting pipe is rotatably connected to the first air inlet pipe through a connecting head, the vertical section of the first air inlet pipe is coaxially arranged with the rotating tube, and the first air inlet pipe is connected to the area surrounded by the placement tube and the first air bag.

[0012] Further technical solution: an air pump is fixedly installed on the bottom plate, the air pump is connected to the connecting chamber, and valves are arranged on the pipes connecting the air pump, the air pump and the connecting chamber.

[0013] Further technical solution: the placement cylinder is connected to an air pipe, a one-way valve is provided on the air pipe, the air pipe is connected to the lower end of the cleaning box, an electromagnet is fixedly installed on the side of the air pipe, the electromagnet adsorbs and fixes the cleaning box when energized, and an iron plate adsorbed by a powered magnet is provided on the side of the cleaning box.

[0014] Further technical solution: The power assembly includes a second rotating power component, which is fixedly mounted on the bottom plate. The second rotating power component drives the gear to rotate, and the gear is meshed with a gear ring fixedly mounted on the bottom surface of the placement cylinder. The gear ring is coaxially arranged with the placement cylinder.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The lower end of the closed horn antenna is blocked by a closed ring, and then the internal space of the horn antenna is filled by the first airbag, so that the area where air flows is reduced and the air flow rate is increased. Then, the air is blown from the first airbag to the side wall of the horn antenna for cleaning. At the same time, the air in the area surrounded by the first airbag, the horn antenna, and the closed ring can be discharged downward through the through hole through the channel in the middle of the first airbag, and then the air can bring dust out of the area surrounded by the first airbag, the horn antenna, and the closed ring, realizing the circulation of air from the inside to the outside in this area, so that the dust cleaned on the horn antenna can be discharged away from the horn antenna in time, reducing the probability of dust adhering to the horn antenna again and improving the cleaning effect.

[0016] 2. After cleaning is completed, the one-way valve on the second air inlet pipe is closed when the air in the area surrounded by the placement tube and the first air bag is extracted to prevent outside air from entering the area surrounded by the placement tube and the first air bag through the first blowing hole, so that the first air bag can quickly shrink and enter the placement tube, thereby increasing the shrinkage speed of the first air bag. The rapid shrinkage of the first air bag can reduce the contact area between the first air bag and the air, thereby reducing the amount of dust adhering to the first air bag, thereby ensuring the cleaning effect during subsequent cleaning.

[0017] 3. When the horn antenna is used for a long time, the first airbag is not used and is in contact with the air for a long time. When the horn antenna is cleaned subsequently, the area surrounded by the placement tube and the first airbag is quickly inflated and deflated during the rotation of the bottom plate, so that the first airbag expands and contracts rapidly. During the rapid expansion and contraction of the first airbag, the dust adhering to its surface is detached, reducing the amount of dust on the surface of the first airbag. Therefore, when the horn antenna is cleaned subsequently, the amount of dust that can contact the horn antenna is reduced, further improving the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention from the first viewing angle.

[0019] Figure 2 It is a schematic diagram of the overall structure from a second viewing angle of the present invention.

[0020] Figure 3 It is a schematic diagram of the explosion structure of the present invention.

[0021] Figure 4 It is a schematic diagram of the structure of the first airbag in the present invention.

[0022] Figure 5 It is a schematic cross-sectional structure diagram of the placement tube in the present invention.

[0023] Figure 6 for Figure 5 A magnified schematic diagram of the A1 region in the middle.

[0024] Figure 7 for Figure 5 A magnified schematic diagram of the A2 region in the middle.

[0025] Figure 8 It is a schematic diagram of the structure of the cleaning box in the present invention.

[0026] In the attached drawings: 1. level meter body; 2. flange; 3. horn antenna; 4. telescopic member; 5. mounting plate; 6. bottom plate; 7. first rotating power member; 8. rotating tube; 9. placing tube; 10. first air bag; 11. through hole; 12. exhaust fan; 13. first air inlet pipe; 14. connecting pipe; 15. connector; 16. connecting chamber; 17. vacuum pump; 18. charging pump; 19. second air bag; 20. first blowing hole; 21. second air inlet pipe; 22. closing ring; 23. air delivery pipe; 24. mounting ring; 25. cleaning box; 26. second blowing hole; 27. electromagnet; 28. second rotating power member; 29. ​​gear; 30. gear ring; 31. control component; 32. power component. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0028] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0029] like Figure 1-Figure 8 As shown, a radar level meter that is easy to operate provided by the present invention includes a level meter body 1, a flange 2 and a horn antenna 3. The level meter body 1 and the horn antenna 3 are fixedly mounted on the flange 2. A bottom plate 6 is arranged on the flange 2, and a control component 31 for adjusting the position angle of the bottom plate 6 is arranged on the flange 2. The control component 31 includes a telescopic member 4, which is fixedly mounted on the flange 2 and perpendicular to the flange 2. A mounting plate 5 is fixedly mounted on the output end of the telescopic member 4, and the bottom plate 6 is rotatably mounted on the mounting plate 5. A first rotating power member 7 that drives the bottom plate 6 to rotate is fixedly mounted on the mounting plate 5. A placement tube 9 is provided on the bottom plate 6, and the side of the placement tube 9 away from the bottom plate 6 is an open structure, and a through hole 11 is provided in the middle of the bottom surface of the placement tube 9 close to the bottom plate 6, a first air bag 10 is fixedly installed in the placement tube 9, and first blowing holes 20 are provided in multiple areas on the first air bag 10, the outer side of the first air bag 10 is fixedly connected to the side of the placement tube 9, the inner side of the first air bag 10 is fixedly connected to the inner bottom surface of the placement tube 9 around the through hole 11, the first air bag 10 and the placement tube 9 form a closed area, and the part protruding from the placement tube 9 after the first air bag 10 is filled with air is a truncated cone structure, and a channel connected to the through hole 11 is provided in the middle thereof, the first blowing hole 20 is located on the inclined side wall after the first air bag 10 is filled with air, and the inclined side wall of the first air bag 10 is parallel to the side wall of the horn antenna 3 after the first air bag 10 is filled with air and enters the horn antenna 3. The antenna 3 and the flange 2 are both provided with gaps. An air pump 18 for conveying air into the first airbag 10 is fixedly installed on the bottom plate 6. A mounting ring 24 is rotatably installed on the flange 2. The mounting ring 24 is coaxially arranged with the horn antenna 3 and a cleaning box 25 is fixedly installed on the mounting ring 24. The cleaning box 25 is connected to the placement tube 9 and a second blowing hole 26 is provided on the surface of the cleaning box 25 parallel to the side wall of the horn antenna 3. The placement tube 9 is connected with an air supply pipe 23, and a one-way valve is arranged on the air supply pipe 23. The air supply pipe 23 is connected with the lower end of the cleaning box 25. An electromagnet 27 is fixedly installed on the side of the air supply pipe 23. After the electromagnet 27 is energized, the cleaning box 25 is adsorbed and fixed. An iron plate adsorbed by the power supply magnet 27 is arranged on the side of the cleaning box 25. A power component 32 for driving the placement tube 9 to rotate is provided on the bottom plate 6, and a coaxially arranged closed ring 22 is rotatably installed on the outer side of the placement tube 9.

[0030] In actual application of this embodiment, in the initial state, the bottom plate 6 is in a vertical state, and will not block the horn antenna 3, thereby ensuring the detection effect. When the horn antenna 3 needs to be cleaned, the telescopic member 4 drives the mounting plate 5 to move downward by a set distance, and at the same time, the first rotating power member 7 drives the bottom plate 6 to rotate 270 degrees so that the bottom plate 6 is in a horizontal state. At this time, the placement tube 9 is located above the bottom plate 6 and directly below the horn antenna 3. Then, the telescopic member 4 contracts and drives the bottom plate 6 to move upward so that the closed ring 22 contacts the lower end of the horn antenna 3. At this time, the lower end of the horn antenna 3 is blocked by the closed ring 22 and the placement tube 9. After the closed ring 22 contacts the lower end of the horn antenna 3, the placement tube 9 is driven to rotate through the power component 32. During the rotation of the placement tube 9, the electromagnet 27 is energized. When the electromagnet 27 contacts the iron plate on the side of the cleaning box 25, it will adsorb the iron plate, thereby fixing the cleaning box 25. At this time, the air supply pipe 23 is connected to the end of the cleaning box 25. At the same time, when the placement tube 9 rotates, it can drive the cleaning box 25 to rotate synchronously. Then the air pump 18 inflates the area surrounded by the placement tube 9 and the first air bag 10. The gas will expand the first air bag 10 to a set shape. After the first air bag 10 is filled with air, the part protruding from the placement tube 9 is a truncated cone structure, and a channel connected to the through hole 11 is provided in the middle. Since the first blowing hole 20 is located on the inclined side wall after the first air bag 10 is filled with air, after the first air bag 10 is filled with air and enters the horn antenna 3, its inclined side wall is parallel to the side wall of the horn antenna 3. The first air bag 10 and the horn antenna 3, the method The blue disc 2 is provided with a gap, so that the air in the first airbag 10 will be blown out from the first blowing hole 20 and will be blown directly to the inner surface of the horn antenna 3, and the inner surface of the horn antenna 3 will be cleaned by the high-speed flowing air. At the same time, the air in the area surrounded by the first airbag 10, the horn antenna 3 and the closed ring 22 can be discharged downward through the through hole 11 through the channel in the middle of the first airbag 10, and then the air can bring dust out of the area surrounded by the first airbag 10, the horn antenna 3 and the closed ring 22, so as to realize the circulation of air in this area from the inside to the outside, so that the dust cleaned on the horn antenna 3 can be discharged away from the horn antenna 3 in time, reducing the probability of dust adhering to the horn antenna 3 again, and improving the cleaning effect. At the same time, the gas will be transported to the cleaning box 25 through the air pipe 23, and the gas in the cleaning box 25 will be blown to the outer surface of the horn antenna 3 through the second blowing hole 26, so as to realize the synchronous cleaning of the outer surface of the horn antenna 3. After cleaning is completed, stop inflating the first airbag 10 and cut off the power to the electromagnet 27. At this time, the gas in the first airbag 10 cannot be replenished and the first airbag 10 will shrink away from the side wall of the horn antenna 3. At this time, the telescopic part 4 can drive the mounting plate 5 to move downward and the closed ring 22 away from the lower end of the horn antenna 3. Then the first rotating power part 7 drives the bottom plate 6 to rotate and reset. The setting of the bottom plate 6 and other arrangements reduces the use and storage volume of the cleaning structure, reduces the restriction on the working space, and is more convenient to operate and use.

[0031] In an example of the present embodiment, the first rotating power component 7 is a first motor, and of course it can also be other components that can output rotational power, such as a hydraulic motor. The base plate 6 is driven to rotate by the first motor. The telescopic component 4 is an electric telescopic rod, and of course it can also be other components that can actively change the length, such as a hydraulic cylinder. The base plate 6 is driven to move up and down by the electric telescopic rod.

[0032] like Figure 5-Figure 7As shown, a radar level meter that is easy to operate is provided by the present invention. Multiple groups of second airbags 19 are fixedly installed inside the first airbag 10. The positions of the second airbags 19 correspond to the positions of the first blowing holes 20. The second airbags 19 cover the areas where the first blowing holes 20 are distributed. The second airbags 19 are connected to a second air inlet pipe 21, and a one-way valve is arranged on the second air inlet pipe 21.

[0033] In actual application of this embodiment, when the air pump 18 inflates the area surrounded by the placement tube 9 and the first airbag 10, the first blowing hole 20 is closed by the second airbag 19 to prevent air from flowing out to the outside, so that the first airbag 10 can quickly expand and fill the interior of the horn antenna 3. When the first airbag 10 is inflated, the gas pressure in the area surrounded by the placement tube 9 and the first airbag 10 increases to reach a set value, so that the one-way valve on the second air inlet pipe 21 opens, and then the air in the area surrounded by the placement tube 9 and the first airbag 10 can pass into the second airbag 19, and then the gas is blown toward the horn antenna 3 through the first blowing hole 20. The inner surface of the first airbag 10 is closed when the air in the area surrounded by the placement tube 9 and the first airbag 10 is subsequently extracted, preventing outside air from entering the area surrounded by the placement tube 9 and the first airbag 10 through the first blowing hole 20, so that the first airbag 10 can quickly shrink and enter the placement tube 9, thereby increasing the expansion and contraction speed of the first airbag 10, thereby reducing the time spent on cleaning the horn antenna 3 and improving the cleaning efficiency. At the same time, the rapid shrinkage of the first airbag 10 can reduce the area of ​​contact between the first airbag 10 and the air, thereby reducing the amount of dust adhering to the first airbag 10 and ensuring the cleaning effect during subsequent cleaning.

[0034] like Figure 5-Figure 7 As shown, a radar level meter that is easy to operate is provided by the present invention. A coaxially arranged rotating tube 8 is fixedly installed at the bottom of the placement tube 9. The rotating tube 8 passes through the bottom plate 6 and is rotatably installed on the bottom plate 6. The through hole 11 is located in the rotating tube 8 and an exhaust fan 12 is fixedly installed in the rotating tube 8.

[0035] Specifically, the air pump 18 is connected to a connecting chamber 16 fixedly mounted on the base plate 6, the connecting chamber 16 is connected to a connecting pipe 14, the vertical section of the connecting pipe 14 is coaxially arranged with the rotating tube 8 and the end of the vertical section of the connecting pipe 14 is rotatably connected to the first air inlet pipe 13 through a connecting head 15, the vertical section of the first air inlet pipe 13 is coaxially arranged with the rotating tube 8, and the first air inlet pipe 13 is connected to the area surrounded by the placement tube 9 and the first airbag 10.

[0036] Specifically, an air pump 17 is fixedly installed on the bottom plate 6 , and the air pump 17 is connected to the communication chamber 16 . Valves are provided on the pipelines connecting the air pump 17 , the air pump 18 and the communication chamber 16 .

[0037] In actual application of this embodiment, when inflating the first airbag 10, the valve on the pipeline connecting the air pump 17 and the connecting chamber 16 is closed, and the gas enters the connecting chamber 16 under the action of the air pump 18, and then enters the area surrounded by the placement tube 9 and the first airbag 10 through the connecting pipe 14, the connector 15 and the first air inlet pipe 13, thereby completing the inflation of the first airbag 10; When cleaning the inside of the horn antenna 3, the exhaust fan 12 rotates to push the air in the rotating tube 8 to flow downward at an accelerated speed, so that the air in the area surrounded by the first airbag 10, the horn antenna 3, and the closed ring 22 can flow downward at an accelerated speed through the channel in the middle of the first airbag 10, and the cleaned dust can be discharged outward with the air flow, thereby reducing the probability of dust adhering to the horn antenna 3 again and improving the cleaning effect; When exhausting the air in the first airbag 10, close the valve on the pipe connecting the inflation pump 18 and the connecting chamber 16. At this time, the vacuum pump 17 extracts the gas in the first airbag 10 through the connecting pipe 14, the connector 15 and the first air inlet pipe 13, so that the first airbag 10 shrinks quickly. When the horn antenna 3 is used for a long time, the first airbag 10 is not used and is in contact with the air for a long time. When the horn antenna 3 is subsequently cleaned, the area surrounded by the placement tube 9 and the first airbag 10 is quickly inflated and deflated during the rotation of the bottom plate 6, so that the first airbag 10 expands and shrinks quickly. During the rapid expansion and contraction of the first airbag 10, the dust adhering to its surface is detached, reducing the amount of dust on the surface of the first airbag 10, thereby reducing the amount of dust that can contact the horn antenna 3 when the horn antenna 3 is subsequently cleaned, further improving the cleaning effect.

[0038] like Figure 2-Figure 5 As shown, a radar level meter that is easy to operate is provided by the present invention. The power assembly 32 includes a second rotating power member 28, and the second rotating power member 28 is fixedly mounted on the base plate 6. The second rotating power member 28 drives the gear 29 to rotate. The gear 29 is meshed with a ring gear 30 fixedly mounted on the bottom surface of the placement tube 9, and the ring gear 30 is coaxially arranged with the placement tube 9.

[0039] In actual application of this embodiment, during cleaning, the second rotating power part 28 drives the gear 29 to rotate, and the gear 29 drives the placement tube 9 and the first airbag 10 to rotate through the meshing ring gear 30, so that the first blowing hole 20 can blow different positions in the horn antenna 3, thereby achieving comprehensive cleaning of the inside of the horn antenna 3 and improving the cleaning effect.

[0040] In one embodiment of the present invention, the second rotating power member 28 is a second motor, and of course, it can also be other components capable of outputting rotating power, such as a hydraulic motor, and the placement cylinder 9 is driven to rotate by the second motor.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0042] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A radar level meter that is easy to operate, comprising a level meter body (1), a flange (2) and a horn antenna (3), characterized in that: The level meter body (1) and the horn antenna (3) are both fixedly mounted on the flange (2); a bottom plate (6) is provided on the flange (2); and a control component (31) for adjusting the position angle of the bottom plate (6) is provided on the flange (2); The bottom plate (6) is provided with a placement tube (9), the side of the placement tube (9) away from the bottom plate (6) is an open structure, and a through hole (11) is provided in the middle of the bottom surface of the placement tube (9) close to the bottom plate (6). A first air bag (10) is fixedly installed in the placement tube (9), and first blowing holes (20) are provided in multiple areas of the first air bag (10). An air pump (18) for conveying air to the first air bag (10) is fixedly installed on the bottom plate (6). The flange plate (2) A mounting ring (24) is rotatably mounted on the top, the mounting ring (24) is coaxially arranged with the horn antenna (3), and a cleaning box (25) is fixedly mounted on the mounting ring (24), the cleaning box (25) is connected with the placement tube (9), and a second blowing hole (26) is opened on the surface of the cleaning box (25) parallel to the side wall of the horn antenna (3), a power assembly (32) for driving the placement tube (9) to rotate is arranged on the bottom plate (6), and a coaxially arranged closed ring (22) is rotatably mounted on the outer side surface of the placement tube (9); The control assembly (31) comprises a telescopic member (4), the telescopic member (4) being fixedly mounted on the flange (2) and perpendicular to the flange (2), a mounting plate (5) being fixedly mounted on the output end of the telescopic member (4), a bottom plate (6) being rotatably mounted on the mounting plate (5), and a first rotating power member (7) being fixedly mounted on the mounting plate (5) for driving the bottom plate (6) to rotate; After the cleaning is completed, the inflation into the first airbag (10) is stopped, and the electromagnet (27) is powered off. At this time, the gas in the first airbag (10) cannot be replenished, and the first airbag (10) will shrink away from the side wall of the horn antenna (3). At this time, the telescopic member (4) can drive the mounting plate (5) to move downward so that the closed ring (22) is away from the lower end of the horn antenna (3), and then the first rotating power member (7) drives the bottom plate (6) to rotate and reset.

2. The radar level meter that is easy to operate according to claim 1, characterized in that: The outer side of the first airbag (10) is fixedly connected to the side of the placement tube (9), and the inner side of the first airbag (10) is fixedly connected to the inner bottom surface of the placement tube (9) around the through hole (11). The first airbag (10) and the placement tube (9) form a closed area. When the first airbag (10) is filled with air, the part protruding from the placement tube (9) is a truncated cone structure, and a channel connected to the through hole (11) is provided in the middle.

3. The radar level meter that is easy to operate according to claim 1, characterized in that: The first blowing hole (20) is located on a side wall that is inclined after the first airbag (10) is filled with air. After the first airbag (10) is filled with air and enters the horn antenna (3), its inclined side wall is parallel to the side wall of the horn antenna (3). A gap is provided between the first airbag (10), the horn antenna (3) and the flange (2).

4. The radar level meter that is easy to operate according to claim 3, characterized in that: A plurality of groups of second air bags (19) are fixedly installed inside the first air bag (10); the positions of the second air bags (19) correspond to the positions of the first blowing holes (20); the second air bags (19) cover the area where the first blowing holes (20) are distributed; the second air bags (19) are connected to a second air intake pipe (21); and a one-way valve is provided on the second air intake pipe (21).

5. The easy-to-operate radar level meter according to claim 1, characterized in that: A coaxially arranged rotating tube (8) is fixedly mounted at the bottom of the placement tube (9); the rotating tube (8) passes through the bottom plate (6) and is rotatably mounted on the bottom plate (6); the through hole (11) is located in the rotating tube (8) and an exhaust fan (12) is fixedly mounted in the rotating tube (8).

6. The radar level meter that is easy to operate according to claim 5, characterized in that: The inflation pump (18) is connected to a communication chamber (16) fixedly mounted on the bottom plate (6), the communication chamber (16) is connected to a communication pipe (14), the vertical section of the communication pipe (14) is coaxially arranged with the rotating pipe (8), and the end of the vertical section of the communication pipe (14) is rotatably connected to a first air intake pipe (13) via a connector (15), the vertical section of the first air intake pipe (13) is coaxially arranged with the rotating pipe (8), and the first air intake pipe (13) is connected to an area surrounded by the placement tube (9) and the first air bag (10).

7. The easy-to-operate radar level meter according to claim 6, characterized in that: An air extraction pump (17) is fixedly mounted on the bottom plate (6), the air extraction pump (17) is in communication with the communication chamber (16), and valves are provided on the pipelines connecting the air extraction pump (17), the air charging pump (18) and the communication chamber (16).

8. The radar level meter that is easy to operate according to claim 1, characterized in that: The placement cylinder (9) is connected to an air supply pipe (23), a one-way valve is provided on the air supply pipe (23), the air supply pipe (23) is connected to the lower end of the cleaning box (25), an electromagnet (27) is fixedly mounted on the side of the air supply pipe (23), the electromagnet (27) adsorbs and fixes the cleaning box (25) when energized, and an iron plate adsorbed by the power supply magnet (27) is provided on the side of the cleaning box (25).

9. The easy-to-operate radar level meter according to claim 1, characterized in that: The power assembly (32) comprises a second rotating power member (28), the second rotating power member (28) being fixedly mounted on the bottom plate (6), the second rotating power member (28) driving a gear (29) to rotate, the gear (29) being meshed with a gear ring (30) fixedly mounted on the bottom surface of the placement cylinder (9), the gear ring (30) being coaxially arranged with the placement cylinder (9).

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