Intelligent electric meter with self-cleaning function

Abstract

This invention belongs to the field of electrical technology, specifically a smart meter with a self-cleaning function. The meter includes an observation window on its surface, a cleaning rack on one side of the observation window, and a sliding connection between the cleaning rack and the meter surface. A movable plate is slidably connected inside the cleaning rack, and a scraper is slidably connected to one side of the movable plate, with the lower surface of the scraper in contact with the meter surface. The scraper has several toothed blocks on its surface and a rack on one side, which is fixedly connected to the inner wall of the cleaning rack. The rack and toothed blocks mesh with each other. This device automatically cleans impurities from the observation window of the meter by driving the scraper inside the cleaning rack with a lead screw. This prevents dust accumulation on the observation window of outdoor meters, which can lead to blurred observation windows, incorrect meter readings, and unreadable fault indicator lights, thus preventing untimely detection of meter malfunctions.

Description

Technical Field

[0001] This invention belongs to the field of electrical technology, specifically a smart meter with a self-cleaning function. Background Technology

[0002] Smart meters are mostly distributed outdoors and are exposed to dust, insects, rain, and damp environments for a long time. Dust will quickly accumulate on the surface of the observation window. If it is not cleaned, it will be difficult for maintenance personnel to see the dial numbers and fault indicator lights through the observation window, thus affecting subsequent maintenance work.

[0003] Most existing outdoor electricity meters are installed in a decentralized manner. Due to the large amount of dust and numerous insects in the outdoor environment, dust and stains easily accumulate on the surface of the observation window. Insect excrement will form stubborn clumps of dirt after drying and hardening, making the surface of the observation window blurry. The existing methods for cleaning the observation windows are generally to be completed by operators regularly wiping, scraping with a scraper, and brushing with a brush. Since outdoor electricity meters are deployed over a wide area, manual cleaning will increase the workload of the staff.

[0004] Therefore, the present invention provides a smart meter with a self-cleaning function. Summary of the Invention

[0005] In order to overcome the shortcomings of existing technologies and solve the problem mentioned in the background technology that the electricity meters are difficult to clean automatically, thus increasing the workload of staff.

[0006] The technical solution adopted by the present invention to solve its technical problem is as follows: The present invention provides a smart meter with a self-cleaning function, including a meter, an observation window provided on the surface of the meter, a cleaning rack provided on one side of the observation window, the cleaning rack being slidably connected to the surface of the meter, a moving plate being slidably connected inside the cleaning rack, a scraper being slidably connected to one side of the moving plate, and the lower surface of the scraper being in contact with the surface of the meter, a plurality of toothed blocks provided on the surface of the scraper, a rack provided on one side of the scraper, the rack being fixedly connected to the inner wall of the cleaning rack, and the rack and toothed blocks meshing with each other.

[0007] Preferably, the cleaning rack has a guide rail that slides inside, and the guide rail is fixedly connected to the surface of the meter.

[0008] Preferably, a movable rod is fixedly connected to the back of the cleaning frame, a lead screw is internally threaded onto the movable rod, a movable motor is provided at one end of the lead screw, the movable motor is fixedly connected to the surface of the meter, and the output end of the movable motor is fixedly connected to one end of the lead screw.

[0009] Preferably, a first telescopic rod is provided on one side of the mobile motor, the fixed end of the first telescopic rod is fixedly connected to the surface of the meter, and the telescopic end of the first telescopic rod is fixedly connected to the surface of the mobile frame.

[0010] Preferably, a cleaning motor is fixedly connected to the upper surface of the movable frame, and a cam is fixedly connected to the output end of the cleaning motor. The cam is in contact with one side of the movable plate, and a first elastic telescopic rod is provided on one side of the movable plate. The telescopic end of the first elastic telescopic rod is fixedly connected to one side of the movable plate, and the fixed end of the first elastic telescopic rod is fixedly connected to the inner wall of the movable frame.

[0011] Preferably, a connecting rod is fixedly connected to one side of the scraper, a first spring is fixedly connected between the connecting rod and the moving plate, a limit rod is slidably connected to the surface of the connecting rod through a second spring, a limit groove is provided inside the cleaning frame, and the inner wall of the limit groove is slidably connected to one end of the limit rod.

[0012] Preferably, the limiting groove includes a receiving section, a rising section is provided on one side of the receiving section, a falling section is provided on one side of the rising section, and the groove depth of the falling section is less than the groove depth of the receiving section.

[0013] Preferably, the scraper has a sealed cavity inside, a piston is slidably connected inside the sealed cavity, a positioning rod is fixedly connected to the upper surface of the piston, a chute frame is fixedly connected inside the cleaning frame, and one end of the positioning rod is slidably connected to the inside of the chute frame.

[0014] Preferably, an exhaust frame is fixedly connected inside the sealed cavity, an air inlet one-way valve is fixedly connected to the upper surface of the exhaust frame, an exhaust pipe is fixedly connected to the lower surface of the exhaust frame, the exhaust pipe is inclined, an air inlet one-way valve is fixedly connected inside the sealed cavity, a telescopic hose is fixedly connected to one end of the air inlet one-way valve, and one end of the telescopic hose is fixedly connected to the inside of the cleaning frame.

[0015] Preferably, a second elastic telescopic rod is fixedly connected inside the limiting groove, and a baffle is fixedly connected to the telescopic end of the second elastic telescopic rod.

[0016] The beneficial effects of this invention are as follows: 1. The present invention discloses a smart meter with a self-cleaning function, which includes a scraper and a cleaning frame. When dust is present on the surface of the observation window and needs cleaning, a lead screw is driven to rotate, which in turn drives a moving rod. The moving rod then moves the cleaning frame along the guide rail, causing the scraper inside the cleaning frame to move synchronously. The scraper cleans the dust on the observation window surface. When the meter is outdoors and hardened insect droppings are attached to the observation window, a moving plate is driven to reciprocate inside the cleaning frame. The moving plate drives the scraper to reciprocate, which in turn drives a toothed block to reciprocate. The toothed block then cleans the hardened insect droppings. By breaking down the material, the hardened insect excrement on the observation window can be cleaned. This device automatically cleans the impurities on the meter's observation window by driving the scraper inside the cleaning frame with a lead screw. This eliminates the need for maintenance personnel to regularly wipe the meter's observation window, significantly reducing the workload of inspection and maintenance for outdoor meters. It also makes it easier for staff to clearly read the meter dial data, improving the convenience of meter reading and equipment maintenance. This prevents dust accumulation on outdoor meter observation windows, which can lead to blurred observation windows, incorrect meter readings, and unreadable equipment fault indicator lights, thus preventing the untimely detection of meter faults.

[0017] 2. The smart meter with self-cleaning function described in this invention is equipped with a rack and a limiting groove. When the scraper slides into the cleaning frame, the limiting rod on the scraper slides in the limiting groove. When the limiting rod moves to the rising section, the scraper drives the rack to move upward. The rack and the rack inside the cleaning frame mesh with each other. At this time, the impurities between the racks can be automatically cleaned with the help of the rack. This device can automatically clean the deposits between the racks, so that the gaps between the rack teeth are unobstructed. This maintains the ability to break down and decompose hardened insect excrement, ensuring the long-term cleanliness of the meter's observation window. It also prevents the accumulation of residual impurities and dirt between the rack teeth after long-term breaking down of dirt, which would cause blockage and make it difficult to clean hardened insect excrement.

[0018] 3. The smart meter with self-cleaning function described in this invention is equipped with a piston and a sealed cavity. When the scraper moves upward, the piston slides downward relative to the scraper inside, causing the piston to compress the gas inside the sealed cavity and enter the exhaust frame through the exhaust one-way valve. Subsequently, the gas is discharged through the exhaust pipe, which tilts and discharges the gas. This effectively cleans the residual impurities on the toothed blocks and racks, preventing some impurities from sliding below the scraper reset point due to external environmental factors, which would cause the scraper to carry the impurities on the observation window and cause wear. At the same time, when the external humidity is high, the meter can absorb and clean the surface of the observation window, thus creating a moisture rinsing effect on the surface of the observation window. Attached Figure Description

[0019] The invention will now be further described with reference to the accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the cleaning frame and moving rod of the present invention; Figure 3 This is a schematic diagram of the cleaning frame of the present invention; Figure 4 This is a cross-sectional view of the internal structure of the cleaning rack of the present invention; Figure 5 This is an exploded view of the rack and scraper structure of the present invention; Figure 6 This is a partial structural schematic diagram of the scraper of the present invention; Figure 7 This is a partial structural cross-sectional view of the scraper of the present invention; Figure 8 This is a schematic diagram of the limiting groove of the present invention; In the diagram: 1. Electricity meter; 11. Observation window; 12. Guide rail; 2. Cleaning rack; 21. Cleaning motor; 22. Cam; 23. Moving plate; 231. First elastic telescopic rod; 24. Scraper; 241. Connecting rod; 242. Limiting rod; 243. First spring; 244. Positioning rod; 245. Piston; 246. Exhaust rack; 247. Exhaust check valve; 248. Intake check valve; 249. Exhaust pipe; 2410. Tooth block; 2411. Second spring; 25. Rack; 26. Telescopic hose; 27. Slide rack; 28. Limiting groove; 281. Storage section; 282. Rising section; 283. Falling section; 284. Baffle; 285. Second elastic telescopic rod; 3. Moving rod; 31. Moving motor; 32. Lead screw; 33. First telescopic rod. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0022] Example 1: As Figures 1 to 8 As shown in the figure, an embodiment of the present invention provides a smart meter with a self-cleaning function, including a meter 1. The surface of the meter 1 is provided with an observation window 11. A cleaning rack 2 is provided on one side of the observation window 11. The cleaning rack 2 is slidably connected to the surface of the meter 1. A moving plate 23 is slidably connected inside the cleaning rack 2. A scraper 24 is slidably connected to one side of the moving plate 23, and the lower surface of the scraper 24 is in contact with the surface of the meter 1. A plurality of toothed blocks 2410 are provided on the surface of the scraper 24. A rack 25 is provided on one side of the scraper 24. The rack 25 is fixedly connected to the inner wall of the cleaning rack 2, and the rack 25 and the toothed blocks 2410 mesh with each other.

[0023] like Figure 1 As shown, the cleaning rack 2 has a guide rail 12 slidably connected inside, and the guide rail 12 is fixedly connected to the surface of the meter 1.

[0024] Specifically, most of the existing outdoor electricity meters 1 are installed in a decentralized manner. Due to the large amount of dust and numerous insects in the outdoor environment, the surface of the observation window 11 is prone to accumulating dust and stains. After the insect excrement dries and hardens, it will form stubborn clumps of dirt, making the surface of the observation window 11 blurry. The existing methods for cleaning the observation window 11 are generally to be completed by operators regularly wiping, scraping with a scraper and brushing with a brush. The outdoor electricity meters 1 are deployed over a wide area, and manual cleaning will lead to an increase in the workload of the staff.

[0025] To solve the above technical problems, this device is used as follows: When it is necessary to clean the impurities on the observation window 11 of the meter 1, the cleaning frame 2 can be driven to slide on the surface of the guide rail 12. The cleaning frame 2 drives the internal moving plate 23 to slide synchronously. The moving plate 23 then drives the scraper 24 to slide on the surface of the cleaning window. The scraper 24 can scrape off the dust on the surface of the cleaning window. When hardened insect excrement is encountered, the movable plate 23 can be driven to slide back and forth inside the cleaning chamber. The movable plate 23 drives the scraper 24 to move back and forth inside the cleaning frame 2. The cleaning frame 2 drives the toothed block 2410 to move back and forth. When the toothed block 2410 comes into contact with the hardened insect excrement, the reciprocating motion of the toothed block 2410 can break down the hardened insect excrement, thereby reducing the contact area of ​​the hardened insect excrement on the surface of the observation window 11. Then the toothed block 2410 can clean up the hardened insect excrement. When the toothed block 2410 slides into the cleaning frame 2 along with the moving plate 23, when the toothed block 2410 moves to the area directly below the rack 25, it drives the scraper 24 to move upward. The scraper 24 drives the toothed block 2410 to move, and the toothed block 2410 and the rack 25 mesh together, so that the rack 25 can clean the impurities accumulated between the toothed blocks 2410.

[0026] This device drives the scraper 24 inside the cleaning frame 2 via the lead screw 32 to automatically clean the impurities on the observation window 11 of the electricity meter 1. This eliminates the need for maintenance personnel to regularly wipe the observation window 11 of the electricity meter 1, significantly reducing the workload of inspection and maintenance of the outdoor distributed electricity meters 1. It also makes it easier for staff to clearly read the meter data, improving the convenience of meter reading and equipment maintenance. It also avoids the problem of dust accumulation on the observation window 11 of the outdoor electricity meter 1, which can cause the observation window 11 to become blurry, leading to misreading of meter reading data and failure to recognize equipment fault indicator lights, thus causing the problem of untimely detection of electricity meter 1 faults. This device can automatically clean the deposits between the tooth blocks 2410, ensuring that the gaps between the teeth of the tooth blocks 2410 are unobstructed. This maintains the device's ability to break down and decompose hardened insect excrement, ensuring the long-term cleanliness of the observation window 11 of the meter 1. It also prevents the accumulation of impurities and dirt between the teeth of the tooth blocks 2410 after long-term breaking down of dirt, which could cause blockage of the tooth blocks 2410 and make it difficult to clean the hardened insect excrement.

[0027] like Figure 1 and Figure 2 As shown, a movable rod 3 is fixedly connected to the back of the cleaning frame 2. A lead screw 32 is internally threaded onto the movable rod 3. A movable motor 31 is provided at one end of the lead screw 32. The movable motor 31 is fixedly connected to the surface of the meter 1. The output end of the movable motor 31 is fixedly connected to one end of the lead screw 32. A first telescopic rod 33 is provided on one side of the movable motor 31. The fixed end of the first telescopic rod 33 is fixedly connected to the surface of the meter 1. The telescopic end of the first telescopic rod 33 is fixedly connected to the surface of the movable frame.

[0028] Specifically, when it is necessary to drive the movable frame to slide on the guide rail 12, the movable motor 31 can be turned on. The movable motor 31 drives the lead screw 32 to rotate, and the movable rod 3 connected to the thread on the surface of the lead screw 32 moves. The movable rod 3 drives the cleaning frame 2 to slide on the guide rail 12. When the cleaning frame 2 moves, it pulls the telescopic end of the first telescopic rod 33 to perform positioning movement.

[0029] like Figure 5 As shown, a cleaning motor 21 is fixedly connected to the upper surface of the movable frame, and a cam 22 is fixedly connected to the output end of the cleaning motor 21. The cam 22 is in contact with one side of the movable plate 23. A first elastic telescopic rod 231 is provided on one side of the movable plate 23. The telescopic end of the first elastic telescopic rod 231 is fixedly connected to one side of the movable plate 23, and the fixed end of the first elastic telescopic rod 231 is fixedly connected to the inner wall of the movable frame.

[0030] like Figure 4 and Figure 8As shown, a connecting rod 241 is fixedly connected to one side of the scraper 24. A first spring 243 is fixedly connected between the connecting rod 241 and the moving plate 23. A limiting rod 242 is slidably connected to the surface of the connecting rod 241 through a second spring 2411. A limiting groove 28 is provided inside the cleaning frame 2. The inner wall of the limiting groove 28 is slidably connected to one end of the limiting rod 242. The limiting groove 28 includes a receiving section 281. A rising section 282 is provided on one side of the receiving section 281. A descending section 283 is provided on one side of the rising section 282. The groove depth of the descending section 283 is less than the groove depth of the receiving section 281. A second elastic telescopic rod 285 is fixedly connected inside the limiting groove 28. A baffle 284 is fixedly connected to the telescopic end of the second elastic telescopic rod 285.

[0031] Specifically, when it is necessary to drive the moving plate 23 to reciprocate inside the cleaning frame 2, the initial situation is that the limiting rod 242 is in the storage section 281 inside the limiting groove 28. The cleaning motor 21 can be turned on, and the cleaning motor 21 drives the cam 22 to rotate. The cam 22 contacts the moving plate 23, so that the moving plate 23 slides into the cleaning frame 2 through the first elastic telescopic rod 231. The limiting rod 242 moves from the receiving section 281, pushing the baffle 284 to move. The baffle 284 squeezes the second elastic telescopic rod 285 and opens the rising section 282. When the limiting rod 242 moves to the rising section 282, the baffle 284 returns to its original position. At this time, the toothed block 2410 is directly below the rack 25, and the first spring 243 drives the connecting rod 241 to move upward. The connecting plate drives the scraper 24 to move upward. The scraper 24 drives the toothed block 2410 to rise and mesh with the rack 25. The rack 25 can then clean the impurities between the toothed blocks 2410. Then the limiting rod 242 moves from the rising section 282 to the falling section 283. At this time, the connecting rod 241 squeezes the first spring 243 and drives the scraper 24 to descend. The scraper 24 and the rack 25 descend and fit against the surface of the observation window 11. The cleaning motor 21 drives the cam 22 to rotate, the cam 22 presses against the moving plate 23, the moving plate 23 stretches the first elastic telescopic rod 231 and drives the toothed block 2410 to move, the limiting rod 242 moves to the stop block, one side of the stop block presses against the limiting rod 242, causing the limiting rod 242 to stretch the second spring 2411 and move away from the limiting groove 28, the baffle 284 performs a limiting operation on the limiting rod 242, so that the limiting rod 242 is stably reset to the storage section 281.

[0032] Example 2: Figure 6 and Figure 7As shown in the comparative embodiment one, another embodiment of the present invention is as follows: the scraper 24 is provided with a sealing cavity inside, a piston 245 is slidably connected inside the sealing cavity, a positioning rod 244 is fixedly connected to the upper surface of the piston 245, a sliding groove frame 27 is fixedly connected inside the cleaning frame 2, and one end of the positioning rod 244 is slidably connected to the inside of the sliding groove frame 27.

[0033] like Figure 7 As shown, an exhaust frame 246 is fixedly connected inside the sealed cavity. An intake one-way valve 248 is fixedly connected to the upper surface of the exhaust frame 246, and an exhaust pipe 249 is fixedly connected to the lower surface of the exhaust frame 246. The exhaust pipe 249 is inclined. An intake one-way valve 248 is fixedly connected inside the sealed cavity. A telescopic hose 26 is fixedly connected to one end of the intake one-way valve 248. One end of the telescopic hose 26 is fixedly connected to the inside of the cleaning frame 2.

[0034] Specifically, when the above-mentioned device is in use, the small impurities after the toothed block 2410 and the rack 25 are broken down are easily affected by the wind and fall down to accumulate below the return stroke of the scraper 24. When the scraper 24 moves back and forth, it will carry impurities and rub against the observation window 11. Long-term use will easily scratch the transparent window surface and cause permanent wear.

[0035] To solve the above-mentioned technical problems, this device uses the following method: When the limiting rod 242 slides in the receiving section 281, the positioning rod 244 slides in the slide frame 27. When the scraper 24 moves upward, the piston 245 is limited by the positioning rod 244, so that the piston 245 descends in the inner sealing cavity of the scraper 24. The piston 245 compresses the air inside the sealing cavity and discharges it into the exhaust frame 246 through the exhaust one-way valve 247. Finally, it is discharged through the exhaust pipe 249 in the exhaust frame 246. The gas is discharged obliquely through the exhaust pipe 249 and blows away the impurities below the rack 25. When the scraper 24 returns to its original position and descends, the piston 245 rises in the sealing cavity, so that the intake one-way valve 248 opens, and external gas is drawn into the sealing cavity.

[0036] This device relies on piston 245 to compress the sealed cavity to form a high-pressure airflow, which is then blown away by the inclined exhaust pipe 249 to remove residual debris from toothed blocks 2410 and rack 25. This prevents impurities from accumulating in the movement path of scraper 24, thus preventing hard particles from rubbing against the observation window 11 with scraper 24 and protecting the light-transmitting surface of the observation window 11. In high-humidity environments, the discharged airflow can carry away surface moisture and condensation, creating an airflow washing effect.

[0037] Working principle: When it is necessary to clean the impurities on the observation window 11 of the meter 1, the moving motor 31 can be turned on. The moving motor 31 drives the lead screw 32 to rotate. The moving rod 3 connected to the thread on the surface of the lead screw 32 moves. The moving rod 3 drives the cleaning frame 2 to slide on the guide rail 12. When it is necessary to drive the moving plate 23 to reciprocate inside the cleaning frame 2, the initial situation is that the limit rod 242 is in the storage section 281 inside the limit groove 28. The cleaning motor 21 can be turned on. The cleaning motor 21 drives the cam 22 to rotate. The cam 22 contacts the moving plate 23, so that the moving plate 23 slides into the cleaning frame 2 through the first elastic telescopic rod 231. The limiting rod 242 moves from the receiving section 281, pushing the baffle 284 to move. The baffle 284 squeezes the second elastic telescopic rod 285 and opens the rising section 282. When the limiting rod 242 moves to the rising section 282, the baffle 284 returns to its original position. At this time, the toothed block 2410 is directly below the rack 25, and the first spring 243 drives the connecting rod 241 to move upward. The connecting plate drives the scraper 24 to move upward. The scraper 24 drives the toothed block 2410 to rise and mesh with the rack 25. The rack 25 can then clean the impurities between the toothed blocks 2410. Then the limiting rod 242 moves from the rising section 282 to the falling section 283. At this time, the connecting rod 241 squeezes the first spring 243 and drives the scraper 24 to descend. The scraper 24 and the rack 25 descend and fit against the surface of the observation window 11. The cleaning motor 21 drives the cam 22 to rotate, the cam 22 presses against the moving plate 23, the moving plate 23 stretches the first elastic telescopic rod 231 and drives the toothed block 2410 to move, the limiting rod 242 moves to the stop block, one side of the stop block presses against the limiting rod 242, so that the limiting rod 242 stretches the second spring 2411 and moves away from the limiting groove 28, the baffle 284 performs a limiting operation on the limiting rod 242, so that the limiting rod 242 stably returns to the storage section 281; When the limiting rod 242 slides in the receiving section 281, the positioning rod 244 slides in the slide frame 27. When the scraper 24 moves upward, the piston 245 is limited by the positioning rod 244, causing the piston 245 to descend in the inner sealing cavity of the scraper 24. The piston 245 compresses the air inside the sealing cavity and discharges it into the exhaust frame 246 through the exhaust one-way valve 247. Finally, it is discharged through the exhaust pipe 249 in the exhaust frame 246. The gas is discharged obliquely through the exhaust pipe 249 and blows away the impurities below the rack 25. When the scraper 24 returns to its original position and descends, the piston 245 rises in the sealing cavity, causing the intake one-way valve 248 to open, so that external gas can be drawn into the sealing cavity. Repeating the above operation can clean the observation window 11.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A smart meter with self-cleaning function, characterized in that: The device includes an electricity meter (1), the surface of which is provided with an observation window (11), and a cleaning rack (2) is provided on one side of the observation window (11). The cleaning rack (2) is slidably connected to the surface of the electricity meter (1). A moving plate (23) is slidably connected inside the cleaning rack (2). A scraper (24) is slidably connected on one side of the moving plate (23), and the lower surface of the scraper (24) is in contact with the surface of the electricity meter (1). A plurality of toothed blocks (2410) are provided on the surface of the scraper (24). A rack (25) is provided on one side of the scraper (24). The rack (25) is fixedly connected to the inner wall of the cleaning rack (2), and the rack (25) and the toothed blocks (2410) mesh with each other. The cleaning rack (2) is internally slidably connected to a guide rail (12), and the guide rail (12) is fixedly connected to the surface of the meter (1); The back of the cleaning rack (2) is fixedly connected to a moving rod (3), and the moving rod (3) is internally threaded with a screw rod (32). One end of the screw rod (32) is provided with a moving motor (31). The moving motor (31) is fixedly connected to the surface of the meter (1), and the output end of the moving motor (31) is fixedly connected to one end of the screw rod (32). A first telescopic rod (33) is provided on one side of the mobile motor (31). The fixed end of the first telescopic rod (33) is fixedly connected to the surface of the meter (1), and the telescopic end of the first telescopic rod (33) is fixedly connected to the surface of the mobile frame. A cleaning motor (21) is fixedly connected to the upper surface of the mobile frame. A cam (22) is fixedly connected to the output end of the cleaning motor (21). The cam (22) is in contact with one side of the mobile plate (23). A first elastic telescopic rod (231) is provided on one side of the mobile plate (23). The telescopic end of the first elastic telescopic rod (231) is fixedly connected to one side of the mobile plate (23), and the fixed end of the first elastic telescopic rod (231) is fixedly connected to the inner wall of the mobile frame. A connecting rod (241) is fixedly connected to one side of the scraper (24), and a first spring (243) is fixedly connected between the connecting rod (241) and the moving plate (23). A limiting rod (242) is slidably connected to the surface of the connecting rod (241) through a second spring (2411). A limiting groove (28) is provided inside the cleaning frame (2), and the inner wall of the limiting groove (28) is slidably connected to one end of the limiting rod (242). The limiting groove (28) includes a receiving section (281), a rising section (282) is provided on one side of the receiving section (281), a falling section (283) is provided on one side of the rising section (282), and the groove depth of the falling section (283) is less than the groove depth of the receiving section (281). The scraper (24) has a sealed cavity inside, and a piston (245) is slidably connected inside the sealed cavity. A positioning rod (244) is fixedly connected to the upper surface of the piston (245). A chute frame (27) is fixedly connected inside the cleaning frame (2). One end of the positioning rod (244) is slidably connected to the inside of the chute frame (27). An exhaust frame (246) is fixedly connected inside the sealed cavity. An air intake check valve (248) is fixedly connected to the upper surface of the exhaust frame (246). An exhaust pipe (249) is fixedly connected to the lower surface of the exhaust frame (246). The exhaust pipe (249) is inclined. An air intake check valve (248) is fixedly connected inside the sealed cavity. A telescopic hose (26) is fixedly connected to one end of the air intake check valve (248). One end of the telescopic hose (26) is fixedly connected to the interior of the cleaning frame (2).

2. A smart meter with self-cleaning function according to claim 1, characterized in that: The limiting groove (28) is fixedly connected to a second elastic telescopic rod (285), and the telescopic end of the second elastic telescopic rod (285) is fixedly connected to a baffle (284).

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