Storage bin liquid level radar detection device

Abstract

The invention discloses a stock bin liquid level radar detection device, and relates to the technical field of liquid level detection, the stock bin liquid level radar detection device comprises a sensor gauge outfit, a flange and a radar emitter which are arranged on a water drop type radar liquid level meter body, the sensor gauge outfit comprises an oscillator, a modulator, a frequency mixing circuit, a difference frequency amplifier, an A / D converter, a calculation device and a display unit, the water-drop-shaped radar liquid level meter body is used for generating, processing and displaying liquid level signals, the flange is used for fixing the water-drop-shaped radar liquid level meter body to the top of a stock bin, the radar transmitter is used for transmitting and receiving microwave signals, and the water-drop-shaped radar liquid level meter further comprises a sweeping mechanism. According to the stock bin liquid level radar detection device, cleaning and blowing cleaning can be conveniently conducted on the surface of a radar transmitter, meanwhile, a cleaning block abuts against the surface of the radar transmitter and slides in a reciprocating mode, it is guaranteed that all blowing holes can be close to the surface of the radar transmitter, and therefore the cleaning efficiency is higher, the cleaning effect is better, and the cleaning effect is better. And the accuracy of liquid level detection is further ensured.

Description

Technical Field

[0001] The invention relates to the technical field of liquid level detection, and in particular to a silo liquid level radar detection device. Background Art

[0002] The silo level radar detection device, namely the radar level meter, is a measuring instrument based on the time travel principle, which is mainly used to measure the liquid level or material level in the silo. The radar level meter mainly includes a sensor head, a flange and a radar transmitter. The sensor head includes an oscillator, a modulator, a mixing circuit, a difference frequency amplifier, an A / D converter, a computing device and a display unit, which are used to generate, process and display the liquid level signal. The flange is used to fix the water drop type radar level meter body on the measuring container, and the radar transmitter is used to transmit and receive microwave signals. The radar wave signal emitted by the radar transmitter is generally a microwave pulse. These signals propagate in space at the speed of light. When the radar wave signal encounters the surface of the material, it will be reflected, and the reflected signal will be captured by the receiver of the radar level meter. By measuring the time difference between the emission and reception of the radar wave signal, the distance between the radar level meter and the material surface can be calculated. This distance signal is then converted into a material level signal, thereby realizing the measurement of the liquid level.

[0003] However, when the existing silo liquid level radar detection device is in use, the surface of its radar transmitter is prone to accumulate dust or other dirt due to the working environment. Especially in environments with high dust concentration such as cement plants, cleaning is not convenient and quick enough. The accumulation of these dirt will affect the measurement accuracy of the radar level meter and even cause measurement errors or signal fluctuations.

[0004] To this end, we propose a silo liquid level radar detection device. Summary of the invention

[0005] The object of the present invention is to provide a silo liquid level radar detection device to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: a silo liquid level radar detection device, comprising a sensor head, a flange and a radar transmitter arranged on a water drop type radar level meter body, the sensor head comprising an oscillator, a modulator, a mixing circuit, a difference frequency amplifier, an A / D converter, a computing device and a display unit, for generating, processing and displaying liquid level signals, the flange is used to fix the water drop type radar level meter body to the top of the silo, the radar transmitter is used to transmit and receive microwave signals, and further comprises:

[0007] A cleaning mechanism, which is arranged at the bottom of the flange and is used to clean the surface of the radar transmitter;

[0008] An air blowing mechanism, which is arranged at the bottom of the flange and is used to blow air to clean the surface of the radar transmitter;

[0009] The cleaning mechanism includes a moving block, and the moving block is connected to the bottom of the flange through a moving mechanism, the side wall of the moving block is connected to a moving plate through a first reset mechanism, and the top of the moving plate is connected to a mounting block through a plurality of telescopic mechanisms arranged in an array, the top of each mounting block is fixedly connected to a cleaning block, and the side wall of the cleaning block is sleeved with a protective cover through a lifting mechanism, and the movement of the moving plate is pushed by a first pushing mechanism;

[0010] The blowing mechanism includes two symmetrically arranged hollow covers fixedly connected to the side walls of the movable plate, and a plurality of movable tubes arranged in an array are inserted on the top of each hollow cover, a plurality of through holes arranged in an array are opened on the side walls of the movable tubes, and the movable tubes are connected to the inner side walls of the hollow cover through a second reset mechanism, a hemispherical cover is fixedly connected to the upper end of the movable tube, and a plurality of blowing holes arranged in an array are opened on the side walls of the hemispherical cover, a blocking mechanism for blocking the through holes is arranged in the hollow cover, and an air supply mechanism for supplying air to the hollow cover is arranged at the bottom of the flange.

[0011] Preferably, the first pushing mechanism includes a first pushing rod fixedly connected to the side wall of the movable plate, and the bottom of the flange is fixedly connected to a first connecting plate, the bottom of the first connecting plate is fixedly connected to a mounting plate, and the side wall of the mounting plate is fixedly connected to a plurality of triangular blocks arranged in an array.

[0012] Preferably, each of the telescopic mechanisms includes two symmetrically arranged sleeve rods fixedly connected to the bottom of the mounting block, and the side wall of each sleeve rod is sleeved with a sleeve, the lower end of the sleeve is fixed to the top of the movable plate, and the side wall of each sleeve is sleeved with a first spring.

[0013] Preferably, the moving mechanism includes two symmetrically arranged fixed blocks fixedly connected to the bottom of the flange, and the opposite side walls of the two fixed blocks are fixedly connected to fixed rods, the side walls of the fixed rods are sleeved with sliders, and the sliders are fixed to the tops of the moving blocks, the side walls of the two fixed blocks are rotatably connected to threaded rods, and the sliders are threadedly connected to the side walls of the threaded rods, and the side walls of one of the fixed blocks are fixedly connected to a motor, and the output end of the motor is fixed to one end of the threaded rod.

[0014] Preferably, the first reset mechanism comprises two symmetrically arranged first T-shaped guide rods fixedly connected to the side walls of the movable plate, the movable block is sleeved on the side walls of the first T-shaped guide rods, and the side walls of each first T-shaped guide rod are sleeved with a second spring.

[0015] Preferably, the blocking mechanism comprises a sealing ring sleeved on the side wall of the moving tube, and a connecting block is fixedly connected between the sealing ring and the hollow cover.

[0016] Preferably, the second reset mechanism comprises a fixing ring fixedly sleeved on the side wall of the moving tube, the side wall of the moving tube is sleeved with a third spring, and two ends of the third spring are respectively fixed to the hollow cover and the fixing ring.

[0017] Preferably, the air supply mechanism comprises an air storage box fixedly connected to the bottom of the flange, and a telescopic tube is fixedly connected between the air storage box and one of the hollow covers, and a U-shaped tube is fixedly connected between the two hollow covers.

[0018] Preferably, the lifting mechanism includes a second connecting plate fixedly connected to the side wall of the protective cover, and the bottom of the second connecting plate is fixedly connected to two symmetrically arranged second T-shaped guide rods, the side walls of the second T-shaped guide rods are sleeved with support plates, and the support plates are fixed to the side walls of the hollow cover, the side walls of each of the second T-shaped guide rods are sleeved with a fourth spring, and the movement of the protective cover is driven by the second pushing mechanism.

[0019] Preferably, the second pushing mechanism comprises a second pushing rod fixedly connected to the side wall of the protective cover, and a ladder frame is fixedly connected to the bottom of the flange, and the ladder frame comprises two symmetrically arranged inclined surfaces.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention provides a cleaning mechanism, etc., and when in use, the water drop type radar level meter body is installed on the top of the silo through the flange, the microwave signal is transmitted and received by the radar transmitter, and the liquid level signal is generated, processed and displayed by the sensor head. When the surface of the radar transmitter needs to be cleaned, the motor is started, and the rotation of the motor drives the rotation of the threaded rod, so that the slider slides along the side wall of the fixed rod. When the slider slides, it drives the moving block to move synchronously, and drives the moving plate to move through the first reset mechanism, and then drives the cleaning block, the protective cover and the mounting block to move through the telescopic mechanism. When the second push rod slides along the inclined plane to the bottom of the ladder frame, the protective cover moves downward along the side wall of the cleaning block, so that the cleaning The block is exposed, and at the same time, the fourth spring is compressed. When the cleaning block is against the surface of the radar transmitter, the cleaning block can be pushed to move downward. At the same time, the first spring is compressed, so as to ensure that the cleaning block can adapt to the shape of the radar transmitter and against its surface, and when the end of the first push rod is against the side wall of the triangular block, the movable plate can be pushed to move toward the movable block. At the same time, the second spring is compressed. When the end of the first push rod passes over the triangular block, the movable plate can be moved and reset in the direction away from the movable block under the action of the second spring. This reciprocating process can make the movable plate move back and forth, and drive the mounting block to move back and forth, thereby making the cleaning efficiency of the radar transmitter higher and the effect better, thereby ensuring the accuracy of liquid level detection.

[0022] The present invention is provided with a blowing mechanism and the like. When the moving plate moves, the hollow cover is driven to move synchronously during cleaning. When the hemispherical cover abuts against the surface of the radar transmitter, the moving tube can be pushed to move downward. At the same time, the third spring is stretched, and the through hole and the sealing ring are staggered. At this time, the high-pressure helium in the gas storage box can enter the hollow cover through the telescopic tube and the U-shaped tube, and enter the moving tube through the through hole and then be sprayed on the surface of the radar transmitter through the blowing hole. When the moving plate moves back and forth, the moving tube can be driven to move back and forth through the hollow cover, and the hemispherical cover can be made to slide on the surface of the radar transmitter, thereby ensuring that the blowing holes can be close to the surface of the radar transmitter, so that the efficiency of the air blowing cleaning is higher, the effect is better, and the accuracy of the liquid level detection is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the position of the cleaning mechanism in the present invention;

[0025] Figure 3 It is a schematic diagram of the position of the blowing mechanism in the present invention;

[0026] Figure 4 It is a partial cross-sectional structural schematic diagram of the hollow cover in the present invention;

[0027] Figure 5 for Figure 2 Enlarged view of point A in the middle;

[0028] Figure 6 for Figure 3 Enlarged view of point B in the middle;

[0029] Figure 7 for Figure 4 Enlarged view of point C in the middle;

[0030] Figure 8 for Figure 5 Enlarged view of point D in the middle;

[0031] Fig. 9 for Figure 6 Enlarged view of point E in the middle.

[0032] In the figure: 1, water drop type radar level gauge body; 101, sensor head; 102, flange; 104, radar transmitter; 201, fixing block; 202, fixing rod; 203, slider; 204, threaded rod; 205, motor; 301, first T-shaped guide rod; 302, second spring; 401, first push rod; 402, first connecting plate; 403, mounting plate; 404, triangular block; 501, sleeve; 502, sleeve rod; 503, first spring; 601, second push rod; 602, ladder frame; 603, inclined plane; 701, support plate; 702, second T-shaped guide rod; 703, second connecting plate; 704, fourth spring; 801, connecting block; 802, sealing ring; 901, air storage box; 902, U-shaped tube; 903, telescopic tube; 1001, fixing ring; 1002, third spring; 1101, moving block; 1102, moving plate; 1103, cleaning block; 1104, protective cover; 1105, mounting block; 1201, hollow cover; 1202, moving tube; 1203, through hole; 1206, hemispherical cover; 1207, blowing hole. DETAILED DESCRIPTION

[0033] 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.

[0034] See also Figure 1-Figure 9 The silo level radar detection device shown in the figure includes a sensor head 101, a flange 102 and a radar transmitter 104 arranged on a water drop type radar level meter body 1. The sensor head 101 includes an oscillator, a modulator, a mixing circuit, a difference frequency amplifier, an A / D converter, a computing device and a display unit for generating, processing and displaying a liquid level signal. The flange 102 is used to fix the water drop type radar level meter body 1 on the top of the silo. The radar transmitter 104 is used to transmit and receive microwave signals. The oscillator, modulator, mixing circuit, difference frequency amplifier, A / D converter, computing device, radar transmitter 104 and display unit are well-known technologies in the technical field. The structure and principle thereof are not repeated here. It also includes:

[0035] A cleaning mechanism, which is disposed at the bottom of the flange 102 and is used to clean the surface of the radar transmitter 104;

[0036] An air blowing mechanism, which is disposed at the bottom of the flange 102 and is used to blow air to clean the surface of the radar transmitter 104;

[0037] The cleaning mechanism includes a moving block 1101, and the moving block 1101 is connected to the bottom of the flange 102 through a moving mechanism, the side wall of the moving block 1101 is connected to a moving plate 1102 through a first reset mechanism, and the top of the moving plate 1102 is connected to a mounting block 1105 through a plurality of telescopic mechanisms arranged in an array, the top of each mounting block 1105 is fixedly connected to a cleaning block 1103, and the side wall of the cleaning block 1103 is sleeved and connected to a protective cover 1104 through a lifting mechanism, and the movement of the moving plate 1102 is driven by a first driving mechanism;

[0038] The blowing mechanism includes two symmetrically arranged hollow covers 1201 fixedly connected to the side wall of the moving plate 1102, and a plurality of moving tubes 1202 arranged in an array are inserted on the top of each hollow cover 1201, a plurality of through holes 1203 arranged in an array are opened on the side wall of the moving tube 1202, and the moving tube 1202 is connected to the inner wall of the hollow cover 1201 through a second reset mechanism, a hemispherical cover 1206 is fixedly connected to the upper end of the moving tube 1202, and a plurality of blowing holes 1207 arranged in an array are opened on the side wall of the hemispherical cover 1206, A sealing mechanism for sealing the through hole 1203 is provided in the hollow cover 1201, and an air supply mechanism for supplying air to the hollow cover 1201 is provided at the bottom of the flange 102, so as to facilitate sweeping and blowing cleaning of the surface of the radar transmitter 104. At the same time, the cleaning block 1103 is abutted against and slides back and forth with the surface of the radar transmitter 104, and the air holes 1207 are ensured to be close to the surface of the radar transmitter 104, so that the cleaning efficiency is higher and the effect is better, thereby ensuring the accuracy of liquid level detection.

[0039] The first pushing mechanism includes a first pushing rod 401 fixedly connected to the side wall of the moving plate 1102, and the bottom of the flange 102 is fixedly connected to the first connecting plate 402, the bottom of the first connecting plate 402 is fixedly connected to the mounting plate 403, and the side wall of the mounting plate 403 is fixedly connected to a plurality of triangular blocks 404 arranged in an array. When it is necessary to clean the surface of the radar transmitter 104, the moving block 1101 is driven to move synchronously through the moving mechanism, and the moving plate 1102 is driven to move through the first reset mechanism, and then the cleaning block 1103, the protective cover 1104 and the mounting plate are driven through the telescopic mechanism. When the end of the first push rod 401 abuts against the side wall of the triangular block 404, the movable plate 1102 can be pushed to move toward the movable block 1101. When the end of the first push rod 401 passes over the triangular block 404, the movable plate 1102 can be reset in the direction away from the movable block 1101 under the action of the first reset mechanism. In this way, the movable plate 1102 can be reciprocated and the mounting block 1105 can be driven to reciprocate, thereby making the cleaning efficiency of the radar transmitter 104 higher and the effect better, thereby ensuring the accuracy of the liquid level detection.

[0040] Each telescopic mechanism includes two symmetrically arranged sleeve rods 502 fixedly connected to the bottom of the mounting block 1105, and the side wall of each sleeve rod 502 is sleeved with a sleeve 501, the lower end of the sleeve 501 is fixed to the top of the movable plate 1102, and the side wall of each sleeve 501 is sleeved with a first spring 503. When the cleaning block 1103 abuts against the surface of the radar transmitter 104, the cleaning block 1103 can be pushed to move downward. At the same time, the first spring 503 is compressed, thereby ensuring that the cleaning block 1103 can adapt to the shape of the radar transmitter 104 and abut against its surface.

[0041] The moving mechanism includes two symmetrically arranged fixed blocks 201 fixedly connected to the bottom of the flange 102, and the opposite side walls of the two fixed blocks 201 are fixedly connected with fixed rods 202, the side walls of the fixed rods 202 are sleeved with sliders 203, and the sliders 203 are fixed to the top of the moving block 1101, the side walls of the two fixed blocks 201 are rotatably connected with threaded rods 204, and the sliders 203 are threadedly connected to the side walls of the threaded rods 204, one of the side walls of the fixed blocks 201 is fixedly connected with a motor 205, and the output end of the motor 205 is fixed to one end of the threaded rod 204, the motor 205 is started, and the rotation of the motor 205 drives the rotation of the threaded rod 204, so that the slider 203 slides along the side wall of the fixed rod 202, when the slider 203 slides, it drives the moving block 1101 to move synchronously, and drives the moving plate 1102 to move through the first reset mechanism.

[0042] The first reset mechanism includes two symmetrically arranged first T-shaped guide rods 301 fixedly connected to the side walls of the moving plate 1102, the moving block 1101 is sleeved on the side walls of the first T-shaped guide rods 301, and the side walls of each first T-shaped guide rod 301 are sleeved with a second spring 302, which guides and resets the movement of the moving plate 1102.

[0043] The sealing mechanism includes a sealing ring 802 sleeved on the side wall of the moving tube 1202, and a connecting block 801 is fixedly connected between the sealing ring 802 and the hollow cover 1201. When the hemispherical cover 1206 abuts against the surface of the radar transmitter 104, it can push the moving tube 1202 to move downward, so that the through hole 1203 and the sealing ring 802 are offset.

[0044] The second reset mechanism includes a fixed ring 1001 fixedly mounted on the side wall of the moving tube 1202. The side wall of the moving tube 1202 is sleeved with a third spring 1002, and both ends of the third spring 1002 are respectively fixed to the hollow cover 1201 and the fixed ring 1001, which guides and resets the movement of the moving tube 1202.

[0045] The gas supply mechanism includes an air storage box 901 fixedly connected to the bottom of the flange 102, the air storage box 901 is filled with high-pressure gas, which can be helium, and a telescopic tube 903 is fixedly connected between the air storage box 901 and one of the hollow covers 1201, and a U-shaped tube 902 is fixedly connected between the two hollow covers 1201. When the through hole 1203 is staggered with the sealing ring 802, the high-pressure helium in the air storage box 901 can enter the hollow cover 1201 through the telescopic tube 903 and the U-shaped tube 902, and enter the mobile tube 1202 through the through hole 1203, and then be sprayed onto the surface of the radar transmitter 104 through the blowing hole 1207.

[0046] The lifting mechanism includes a second connecting plate 703 fixedly connected to the side wall of the protective cover 1104, and two symmetrically arranged second T-shaped guide rods 702 are fixedly connected to the bottom of the second connecting plate 703, the side wall of the second T-shaped guide rod 702 is sleeved with a support plate 701, and the support plate 701 is fixed to the side wall of the hollow cover 1201, and the side wall of each second T-shaped guide rod 702 is sleeved with a fourth spring 704, and the movement of the protective cover 1104 is driven by the second pushing mechanism. When cleaning, when the moving block 1101 moves, the protective cover 1104 is pushed downward along the side wall of the cleaning block 1103 by the second pushing mechanism, thereby exposing the cleaning block 1103, and at the same time, the fourth spring 704 is compressed.

[0047] The second pushing mechanism includes a second pushing rod 601 fixedly connected to the side wall of the protective cover 1104, and a ladder frame 602 is fixedly connected to the bottom of the flange 102, and the ladder frame 602 includes two symmetrically arranged inclined surfaces 603. When the second pushing rod 601 slides along the inclined surfaces 603 to the bottom of the ladder frame 602, the protective cover 1104 moves downward along the side wall of the cleaning block 1103.

[0048] Working principle: When in use, the water drop type radar level meter body 1 is installed on the top of the silo through the flange 102, the microwave signal is transmitted and received through the radar transmitter 104, and the liquid level signal is generated, processed and displayed through the sensor head 101. When it is necessary to clean the surface of the radar transmitter 104, the motor 205 is started, and the rotation of the motor 205 drives the rotation of the threaded rod 204, so that the slider 203 slides along the side wall of the fixed rod 202. When the slider 203 slides, it drives the moving block 1101 to move synchronously, and drives the moving plate 1102 to move through the first reset mechanism, and then drives the cleaning block 1103, the protective cover 1104 and the mounting block 1105 to move through the telescopic mechanism. When the second push rod 601 slides along the inclined surface 603 to the bottom of the ladder frame 602, the protective cover 1104 moves downward along the side wall of the cleaning block 1103, thereby exposing the cleaning block 1103, and at the same time, the fourth spring 704 is compressed;

[0049] When the cleaning block 1103 abuts against the surface of the radar transmitter 104, the cleaning block 1103 can be pushed to move downward. At the same time, the first spring 503 is compressed, thereby ensuring that the cleaning block 1103 can adapt to the shape of the radar transmitter 104 and abut against its surface. Moreover, when the end of the first push rod 401 abuts against the side wall of the triangular block 404, the moving plate 1102 can be pushed to move toward the moving block 1101. At the same time, the second spring 302 is compressed. When the end of the first push rod 401 passes over the triangular block 404, the moving plate 1102 can be moved and reset in the direction away from the moving block 1101 under the action of the second spring 302. In this way, the moving plate 1102 can be reciprocated, and the mounting block 1105 can be driven to reciprocate, so that the cleaning efficiency of the radar transmitter 104 is higher and the effect is better, thereby ensuring the accuracy of liquid level detection.

[0050] Furthermore, when the moving plate 1102 moves, the hollow cover 1201 is driven to move synchronously. When the hemispherical cover 1206 abuts against the surface of the radar transmitter 104, the moving tube 1202 can be pushed to move downward. At the same time, the third spring 1002 is stretched, and the through hole 1203 is staggered with the sealing ring 802. At this time, the high-pressure helium in the gas storage box 901 can enter the hollow cover 1201 through the telescopic tube 903 and the U-shaped tube 902, and pass through the through hole 1203. After entering the moving tube 1202, the liquid is sprayed onto the surface of the radar transmitter 104 through the air blowing holes 1207. When the moving plate 1102 reciprocates, the moving tube 1202 can be driven to reciprocate through the hollow cover 1201, and the hemispherical cover 1206 can slide on the surface of the radar transmitter 104, thereby ensuring that the air blowing holes 1207 can be close to the surface of the radar transmitter 104, making the air blowing cleaning more efficient and effective, and ensuring the accuracy of liquid level detection;

[0051] When the hemispherical cover 1206 is separated from the surface of the radar transmitter 104 , the moving tube 1202 can be moved upward and reset under the action of the third spring 1002 , and the sealing ring 802 can block and seal the through hole 1203 . At this time, no air is supplied.

[0052] 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.

[0053] 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 silo liquid level radar detection device, comprising a sensor head (101), a flange (102) and a radar transmitter (104) arranged on a water drop type radar level meter body (1), the sensor head (101) comprising an oscillator, a modulator, a mixing circuit, a difference frequency amplifier, an A / D converter, a computing device and a display unit, for generating, processing and displaying liquid level signals, the flange (102) being used to fix the water drop type radar level meter body (1) on the top of the silo, the radar transmitter (104) being used to transmit and receive microwave signals, characterized in that: Also includes: A cleaning mechanism, the cleaning mechanism being arranged at the bottom of the flange (102) and being used for cleaning the surface of the radar transmitter (104); An air blowing mechanism, the air blowing mechanism being arranged at the bottom of the flange (102) and being used for blowing and cleaning the surface of the radar transmitter (104); The cleaning mechanism comprises a moving block (1101), and the moving block (1101) is connected to the bottom of the flange (102) via a moving mechanism, the side wall of the moving block (1101) is connected to a moving plate (1102) via a first reset mechanism, and the top of the moving plate (1102) is connected to a mounting block (1105) via a plurality of telescopic mechanisms arranged in an array, the top of each mounting block (1105) is fixedly connected to a cleaning block (1103), and the side wall of the cleaning block (1103) is sleeved and connected to a protective cover (1104) via a lifting mechanism, and the movement of the moving plate (1102) is driven by a first driving mechanism; The blowing mechanism comprises two symmetrically arranged hollow covers (1201) fixedly connected to the side wall of the moving plate (1102), and a plurality of moving tubes (1202) arranged in an array are inserted at the top of each hollow cover (1201), a plurality of through holes (1203) arranged in an array are opened on the side wall of the moving tube (1202), and the moving tube (1202) is connected to the inner wall of the hollow cover (1201) through a second reset mechanism, a hemispherical cover (1206) is fixedly connected to the upper end of the moving tube (1202), and a plurality of blowing holes (1207) arranged in an array are opened on the side wall of the hemispherical cover (1206), a blocking mechanism for blocking the through holes (1203) is arranged in the hollow cover (1201), and an air supply mechanism for supplying air to the hollow cover (1201) is arranged at the bottom of the flange (102).

2. A silo liquid level radar detection device according to claim 1, characterized in that: The first pushing mechanism comprises a first pushing rod (401) fixedly connected to the side wall of the movable plate (1102), and the bottom of the flange (102) is fixedly connected to a first connecting plate (402), the bottom of the first connecting plate (402) is fixedly connected to a mounting plate (403), and the side wall of the mounting plate (403) is fixedly connected to a plurality of triangular blocks (404) arranged in an array.

3. A silo liquid level radar detection device according to claim 2, characterized in that: Each of the telescopic mechanisms comprises two symmetrically arranged sleeve rods (502) fixedly connected to the bottom of the mounting block (1105), and the side wall of each sleeve rod (502) is sleeved with a sleeve (501), the lower end of the sleeve (501) is fixed to the top of the movable plate (1102), and the side wall of each sleeve (501) is sleeved with a first spring (503).

4. A silo liquid level radar detection device according to claim 1, characterized in that: The moving mechanism comprises two symmetrically arranged fixed blocks (201) fixedly connected to the bottom of the flange (102), and the opposite side walls of the two fixed blocks (201) are fixedly connected with fixed rods (202), the side walls of the fixed rods (202) are sleeved with sliders (203), and the sliders (203) are fixed to the top of the moving block (1101), the side walls of the two fixed blocks (201) are rotatably connected with threaded rods (204), and the sliders (203) are threadedly connected to the side walls of the threaded rods (204), and the side walls of one of the fixed blocks (201) are fixedly connected with a motor (205), and the output end of the motor (205) is fixed to one end of the threaded rod (204).

5. The silo liquid level radar detection device according to claim 1, characterized in that: The first reset mechanism comprises two symmetrically arranged first T-shaped guide rods (301) fixedly connected to the side wall of the moving plate (1102), the moving block (1101) is sleeved on the side wall of the first T-shaped guide rod (301), and the side wall of each first T-shaped guide rod (301) is sleeved with a second spring (302).

6. A silo liquid level radar detection device according to claim 1, characterized in that: The blocking mechanism comprises a sealing ring (802) sleeved on the side wall of the moving tube (1202), and a connecting block (801) is fixedly connected between the sealing ring (802) and the hollow cover (1201).

7. A silo liquid level radar detection device according to claim 1, characterized in that: The second reset mechanism comprises a fixed ring (1001) fixedly sleeved on the side wall of the moving tube (1202), the side wall of the moving tube (1202) is sleeved with a third spring (1002), and two ends of the third spring (1002) are respectively fixed to the hollow cover (1201) and the fixed ring (1001).

8. The silo liquid level radar detection device according to claim 1, characterized in that: The air supply mechanism comprises an air storage box (901) fixedly connected to the bottom of the flange (102), a telescopic tube (903) fixedly connected between the air storage box (901) and one of the hollow covers (1201), and a U-shaped tube (902) fixedly connected between the two hollow covers (1201).

9. The silo liquid level radar detection device according to claim 1, characterized in that: The lifting mechanism comprises a second connecting plate (703) fixedly connected to the side wall of the protective cover (1104), and the bottom of the second connecting plate (703) is fixedly connected to two symmetrically arranged second T-shaped guide rods (702), the side walls of the second T-shaped guide rods (702) are sleeved with support plates (701), and the support plates (701) are fixed to the side walls of the hollow cover (1201), the side walls of each of the second T-shaped guide rods (702) are sleeved with fourth springs (704), and the movement of the protective cover (1104) is driven by a second driving mechanism.

10. A silo liquid level radar detection device according to claim 9, characterized in that: The second pushing mechanism comprises a second pushing rod (601) fixedly connected to the side wall of the protective cover (1104); a ladder frame (602) is fixedly connected to the bottom of the flange (102), and the ladder frame (602) comprises two symmetrically arranged inclined surfaces (603).

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