Compact moisture-proof electric energy metering box

Abstract

The application relates to the technical field of electric power metering equipment, in particular to a compact moisture-proof electric energy metering box, which comprises a metering box body, a partition plate is fixedly arranged in the metering box body, and a dehumidification mechanism and an internal circulation heat dissipation mechanism are arranged in the metering box body; the dehumidification mechanism comprises a moisture absorption box fixedly connected to the inner bottom wall of the metering box body. The moisture-proof dehumidification can be realized, the condensation failure can be eliminated, the built-in active dehumidification mechanism is matched with the active carbon dehumidification plate, the air guide circulation and the sealing structure, the moisture in the box can be effectively adsorbed, the condensation generation is inhibited, the problems such as corrosion of the wiring terminal, reduction of insulation and increase of metering error are avoided, and the operation stability in the humid environment is obviously improved; the arc-shaped dust screen is matched with the rotating cam and the movable plate vibration structure, dust can be automatically shaken off, the dust falls into the collecting box through the dust collecting port, the dustproof and self-cleaning in the box are realized, the hidden troubles of poor contact and short circuit caused by dust accumulation are reduced, and the maintenance period is prolonged.

Description

Technical Field

[0001] This invention relates to the field of power metering equipment technology, specifically a compact, moisture-proof power metering box. Background Technology

[0002] Electricity metering boxes are core equipment for metering electricity consumption at the power grid terminal and are widely used in residential communities and industrial and commercial sites. Traditional metering boxes are mostly made of metal / non-metal, with a single-layer shell and a straight-line layout, which has the advantages of simple structure and low cost.

[0003] Traditional metering boxes generally rely on natural convection for heat dissipation. The air circulation inside the box is poor, and heat is easily accumulated. Especially under high current and full load conditions, the electricity meter, circuit breaker, and terminal block generate concentrated heat. Long-term high-temperature operation will accelerate insulation aging and may even cause safety hazards such as overheating and short circuits. At the same time, traditional boxes lack active dehumidification and air circulation. In humid conditions, condensation and water accumulation are easy to occur inside the box, which leads to corrosion of terminal blocks, reduced conductivity, and increased metering errors, seriously affecting metering accuracy and power supply reliability. Summary of the Invention

[0005] The purpose of this invention is to provide a compact, moisture-proof electricity metering box to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a compact moisture-proof electricity metering box, comprising a metering box body, wherein a partition is fixedly installed inside the metering box body, and a dehumidification mechanism and an internal circulation heat dissipation mechanism are installed inside the metering box body;

[0007] The dehumidification mechanism includes a moisture-absorbing box fixedly connected to the bottom wall of the metering chamber. A removable and replaceable activated carbon dehumidification plate is installed inside the moisture-absorbing box. Protective covers are fixedly installed on both the left and right sides of the moisture-absorbing box. Limiting baffles are fixedly installed on both the left and right side walls of the moisture-absorbing box. Several compression springs are fixedly connected to the lower surface of the limiting baffles. Movable plates are fixedly installed at the bottom ends of the compression springs. An arc-shaped dustproof net is fixedly connected between two movable plates. Two rotating shafts are rotatably connected between the front and rear inner walls of the moisture-absorbing box. The rotating shafts are located directly below the movable plates, and several rotating cams are fixedly connected to the surface of the rotating shafts. The rotating cams overlap with the lower surface of the movable plates.

[0008] Preferably, a driving mechanism is fixed to the front of the moisture-absorbing box. The driving mechanism includes a driving box, a driving motor is fixed to the inner side wall of the driving box, a driving crossbar is fixedly connected to the output end of the driving motor, two worm gears are fixedly connected to the surface of the driving crossbar, the front ends of the two rotating shafts extend into the interior of the driving box and are fixedly connected to worm wheels, and the two worm gears mesh with the two worm wheels respectively.

[0009] Preferably, a first synchronous wheel is fixedly connected to the surface of the rotating shaft, a transmission shaft is rotatably connected between the front and rear inner walls of the protective cover, and a guide vane is fixedly connected to the surface of the transmission shaft, with several guide vanes evenly distributed in a ring array on the surface of the transmission shaft.

[0010] Preferably, the protective cover has several air intake holes on its side, and the air intake holes are evenly arranged in a linear array on the surface of the protective cover, with the positions of the air intake holes corresponding to the air guide plates.

[0011] Preferably, air inlets are provided on both the left and right sides of the moisture absorption box, and the positions of the air inlets correspond to the air guide vanes. The air inlets and air intakes are symmetrically distributed on the left and right sides of the air guide vanes. The air inlets are located below the arc-shaped dustproof net, and the arc-shaped dustproof net is located directly below the activated carbon dehumidification plate.

[0012] Preferably, the front end of the drive shaft extends into the interior of the drive box and is fixedly connected to a second synchronous pulley. The position of the second synchronous pulley corresponds to that of the first synchronous pulley. A synchronous belt is installed between the first and second synchronous pulleys, and the first and second synchronous pulleys are connected by the synchronous belt for transmission.

[0013] Preferably, an air guide hood is fixedly embedded on the surface of the moisture-absorbing box, an air guide pipe is fixedly connected to the output end of the air guide hood, and strip shells with corresponding positions are fixedly connected to the upper and lower surfaces of the partition. The end of the air guide pipe away from the air guide hood extends into the interior of the strip shell, and several air outlet holes are opened on the front and rear surfaces of the strip shell.

[0014] Preferably, the internal circulation heat dissipation mechanism includes a heat dissipation box fixedly connected to the top wall of the metering box. Two vertical baffles are fixedly connected to the inner wall of the heat dissipation box. A miniature fan is fixedly embedded on the surface of each of the two vertical baffles. Heat dissipation ducts are fixedly embedded on both the left and right sides of the heat dissipation box. An air collection hood is fixedly connected to the air inlet of the heat dissipation duct. The air inlet of the air collection hood corresponds to the air outlet of the miniature fan. The end of the heat dissipation duct away from the air collection hood extends into the interior of the strip shell.

[0015] Preferably, an electromagnetic switch valve is fixedly installed on the surface of the heat dissipation duct, a semiconductor cooling chip is fixedly embedded in the inner rear wall of the heat dissipation box, and a heat dissipation fan is fixedly installed on the back of the heat dissipation box. The air inlet of the heat dissipation fan corresponds to the heat dissipation end of the semiconductor cooling chip, and a heat exhaust pipe is fixedly connected to the output end of the heat dissipation fan. The end of the heat exhaust pipe away from the heat dissipation fan extends to the outside of the metering box, and a temperature and humidity sensor is fixedly installed on the lower surface of the heat dissipation box.

[0016] Preferably, the lower surface of the heat sink box is provided with an air inlet, and a filter screen is fixedly provided at the bottom of the air inlet. The air inlet is located between two miniature fans, and the position of the air inlet corresponds to the air inlet end of the miniature fans.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. This compact, moisture-proof electricity metering box can achieve moisture-proof dehumidification, eliminating condensation faults. It has a built-in active dehumidification mechanism, combined with activated carbon dehumidification plates, air circulation and sealing structure, to effectively adsorb moisture in the box and inhibit condensation formation, avoiding problems such as corrosion of wiring terminals, reduced insulation and increased metering errors, significantly improving the operational stability in humid environments. The arc-shaped dustproof net, combined with the rotating cam and the vibrating structure of the movable plate, can automatically shake off dust. The dust falls into the collection box through the dust collection port, realizing dust prevention and self-cleaning inside the box, reducing the risk of poor contact and short circuit caused by dust accumulation, and extending the maintenance cycle.

[0019] 2. This compact, moisture-proof power metering box is equipped with an internal circulation cooling mechanism and a temperature and humidity sensor to achieve intelligent internal circulation cooling. When an abnormality occurs inside the metering box and the temperature becomes too high, the internal circulation cooling mechanism can be automatically activated to form a uniform airflow circulation inside the metering box, quickly removing the heat under high current conditions. This solves the problems of poor heat dissipation and excessive temperature rise in traditional boxes, ensuring the long-term safe operation of components.

[0020] 3. This compact, moisture-proof electricity metering box features a modular, layered internal layout with separate compartments for the electricity meter, circuit breaker, and terminals, ensuring separation of strong and weak current circuits and orderly wiring. The metering box is made of lightweight, flame-retardant, and insulating material, with optimized and reduced overall dimensions. It can be directly adapted to older metering locations with limited installation space, replacing traditional metering boxes without requiring modifications to the metering locations, thus significantly reducing the cost of renovation and equipment replacement in older residential areas. Attached Figure Description

[0021] Figure 1 This is a front view structural diagram of the present invention;

[0022] Figure 2 This is a schematic diagram of the rear view structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the internal structure of the dehumidification mechanism of the present invention;

[0024] Figure 4 for Figure 3 Enlarged structural diagram at point A;

[0025] Figure 5 This is a schematic diagram of the internal structure of the moisture-absorbing box of the present invention;

[0026] Figure 6This is a schematic diagram of the internal structure of the internal circulation heat dissipation mechanism of the present invention;

[0027] Figure 7 for Figure 6 Enlarged structural diagram at point B;

[0028] Figure 8 This is a schematic diagram of the internal structure of the heat sink box of the present invention;

[0029] Figure 9 This is a schematic diagram of the arc-shaped dustproof net structure of the present invention.

[0030] In the diagram: 1. Metering chamber; 2. Baffle; 3. Dehumidification mechanism; 4. Internal circulation heat dissipation mechanism; 5. Drive mechanism; 6. Limiting mounting shell; 7. Collection box;

[0031] 301. Moisture Absorption Box; 302. Activated Carbon Dehumidification Plate; 303. Protective Cover; 304. Limiting Baffle; 305. Compression Spring; 306. Movable Plate; 307. Arc-shaped Dustproof Net; 308. Rotating Shaft; 309. Rotating Cam; 310. Air Inlet; 311. Air Inlet; 312. Air Guide Cover; 313. Air Guide Tube; 314. Strip Shell; 315. Air Outlet;

[0032] 401. Heat sink; 402. Miniature fan; 403. Heat dissipation duct; 404. Air collection shroud; 405. Semiconductor cooling chip; 406. Heat dissipation fan; 407. Heat exhaust pipe; 408. Temperature and humidity sensor; 409. Air inlet;

[0033] 501. Drive box; 502. Drive motor; 503. Drive crossbar; 504. Worm gear; 505. Worm wheel; 506. First synchronous pulley; 507. Transmission shaft; 508. Air guide vane; 509. Second synchronous pulley; 510. Synchronous belt. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Please see Figures 1-9 The present invention provides a technical solution: a compact moisture-proof electricity metering box, including a metering box body 1. The metering box body 1 is made of lightweight flame-retardant insulating material, which has the characteristics of good insulation performance, high flame retardant level and light weight. It can be directly adapted to the limited installation space of old meter positions and can be replaced without modifying the original meter positions.

[0036] The metering box 1 is fixedly equipped with a partition 2, which divides the interior of the metering box 1 into independent upper and lower spaces. This allows for a layered and modular layout of components such as the electricity meter, circuit breaker, and terminal blocks, enabling each electrical component to be isolated in its own chamber and separating strong and weak currents. This makes the internal wiring more standardized and orderly, avoiding risks such as short circuits and insulation failures caused by wire crossing and tangling. It also facilitates later inspection and maintenance, improving overall power safety and equipment reliability.

[0037] The metering chamber 1 is equipped with a dehumidification mechanism 3 and an internal circulation heat dissipation mechanism 4. The dehumidification mechanism 3 and the internal circulation heat dissipation mechanism 4 work together to regulate the humidity and control the temperature inside the chamber, respectively. This solves the problems of poor sealing and easy moisture condensation in traditional metering chambers, as well as the problem of excessive temperature rise due to poor heat dissipation. It ensures that the metering chamber maintains a stable temperature and humidity environment during long-term operation, thereby improving the metering accuracy and service life.

[0038] The dehumidification mechanism 3 includes a moisture absorption box 301, which is fixedly connected to the inner bottom wall of the metering chamber 1. It serves as the main mounting carrier for the dehumidification mechanism 3, providing a stable mounting position for the internal dehumidification, dust prevention, and air guiding components. Inside the moisture absorption box 301 is a removable and replaceable activated carbon dehumidification plate 302. The activated carbon dehumidification plate 302 has highly efficient moisture absorption performance, continuously absorbing moisture from the air inside the chamber, inhibiting condensation formation, and preventing problems such as terminal corrosion, increased metering errors, and decreased insulation performance, significantly improving operational stability in humid environments.

[0039] Protective covers 303 are fixedly installed on both the left and right sides of the moisture absorption box 301. The protective covers 303 protect the internal air guiding structure, prevent foreign objects from entering and affecting the normal operation of the air guide vanes 508, and keep the air intake area clean. Limiting baffles 304 are fixedly installed on both the left and right side walls of the moisture absorption box 301. Several compression springs 305 are fixedly connected to the lower surface of the limiting baffles 304. Movable plates 306 are fixed to the bottom ends of the compression springs 305. The limiting baffles 304 provide limiting support for the compression springs 305 and the movable plates 306. The compression springs 305 provide elastic restoring force for the movable plates 306, ensuring that the movable plates 306 move smoothly and reliably during up and down movement.

[0040] An arc-shaped dustproof net 307 is fixedly connected between the two movable plates 306. The arc-shaped dustproof net 307 is located directly below the activated carbon dehumidification plate 302 and can filter the air entering the moisture absorption box 301, intercepting dust, insects and other impurities in the air, and preventing dust from accumulating on the surface of electrical components and causing potential hazards such as poor contact and short circuits. Two rotating shafts 308 are rotatably connected between the front and rear inner walls of the moisture absorption box 301. The rotating shafts 308 are located directly below the movable plates 306, and several rotating cams 309 are fixedly connected to the surface of the rotating shafts 308. The rotating cams 309 overlap with the lower surface of the movable plates 306. The rotating shaft 308 drives the rotating cam 309 to rotate continuously. The cam structure periodically lifts the movable plate 306, and with the reset action of the compression spring 305, the movable plate 306 and the arc-shaped dustproof net 307 generate high-frequency vibration, automatically shaking off the dust adhering to the surface of the dustproof net, preventing dust from accumulating and adsorbing on the surface of the arc-shaped dustproof net 307, thereby preventing the arc-shaped dustproof net 307 from clogging. When the drive mechanism 5 is closed, the dust blocked under the arc-shaped dustproof net 307 falls into the collection box 7 through the dust collection port under the action of gravity, realizing the self-cleaning function, eliminating the need for frequent manual cleaning, reducing the frequency of maintenance, and extending the equipment maintenance cycle.

[0041] A drive mechanism 5 is fixed to the front of the moisture absorption box 301. The drive mechanism 5 includes a drive box 501, a drive motor 502, a drive crossbar 503, a worm gear 504, a worm wheel 505, a first synchronous pulley 506, a transmission shaft 507, an air guide vane 508, a second synchronous pulley 509, and a synchronous belt 510. The drive box 501 is fixed to the front of the moisture absorption box 301, providing a closed installation space for the internal transmission components and preventing dust and moisture from entering and causing transmission failure. The drive motor 502 is fixed to the inner wall of the drive box 501. The drive motor 502 provides the power source for the entire dehumidification and air guiding system, outputting stable torque. The output end of the drive motor 502 is fixedly connected to the drive crossbar 503. Two worm gears 504 are fixedly connected to the surface of the drive crossbar 503. The front ends of the two rotating shafts 308 extend into the interior of the drive box 501 and are fixedly connected to the worm wheels 505. The two worm gears 504 mesh with the two worm wheels 505 respectively. The drive motor 502 drives the drive crossbar 503 and worm 504 to rotate, and drives the rotating shaft 308 to rotate through the meshing transmission of the worm 504 and worm wheel 505.

[0042] A first synchronous pulley 506 is fixedly connected to the surface of the rotating shaft 308. A drive shaft 507 is rotatably connected between the front and rear inner walls of the protective cover 303. A guide vane 508 is fixedly connected to the surface of the drive shaft 507. Several guide vanes 508 are evenly distributed in a ring array on the surface of the drive shaft 507, forming a stable guide impeller structure. The front end of the drive shaft 507 extends into the interior of the drive box 501 and is fixedly connected to a second synchronous pulley 509. The position of the second synchronous pulley 509 corresponds to that of the first synchronous pulley 506. A synchronous belt 510 is installed between the first synchronous pulley 506 and the second synchronous pulley 509, enabling a transmission connection between them. As the rotating shaft 308 rotates, it drives the first synchronous pulley 506 to rotate, which in turn drives the drive shaft 507 and the guide vanes 508 to rotate synchronously via the synchronous belt 510 and the second synchronous pulley 509.

[0043] The protective cover 303 has several air intake holes 310 on its side, which are evenly arranged in a linear array on the surface of the protective cover 303. The positions of the air intake holes 310 correspond to the air guide vanes 508. The moisture absorption box 301 has air inlets 311 on both its left and right sides, which correspond to the positions of the air guide vanes 508. The air inlets 311 and air intake holes 310 are symmetrically distributed on the left and right sides of the air guide vanes 508, and the air inlets 311 are located below the arc-shaped dustproof mesh 307. The high-speed rotation of the air guide vanes 508 generates negative air pressure, drawing air from inside the metering chamber 1 through the air intake holes 310 and then into the moisture absorption box 301 through the air inlets 311. The air is filtered by the arc-shaped dustproof mesh 307 and dried by the activated carbon dehumidification plate 302, forming dry and clean air. This achieves air circulation purification and dehumidification within the chamber, comprehensively suppressing condensation and ensuring a stable operating environment for electrical components.

[0044] A desiccant 312 is fixedly embedded on the surface of the desiccant box 301. A desiccant 313 is fixedly connected to the output end of the desiccant 312. A strip shell 314 with corresponding positions is fixedly connected to the upper and lower surfaces of the partition 2. The end of the desiccant 313 away from the desiccant 312 extends into the interior of the strip shell 314. Several air outlets 315 are opened on the front and rear surfaces of the strip shell 314. The dried air enters the desiccant 312 and the desiccant 313 under the pressure of the desiccant 508, and is finally evenly delivered into the upper and lower spaces of the partition 2 through the air outlets 315 on the surface of the strip shell 314, so as to achieve uniform air supply throughout the box, avoid high humidity in local areas, and improve the uniformity and comprehensiveness of the dehumidification effect.

[0045] The internal circulation heat dissipation mechanism 4 includes a heat dissipation box 401, which is fixedly connected to the inner top wall of the metering chamber 1. Located in the high-temperature accumulation area at the top of the chamber, it can quickly absorb heat from the chamber and dissipate it. Two vertical baffles are fixedly connected to the inner wall of the heat dissipation box 401. A miniature fan 402 is fixedly embedded on the surface of each baffle. The baffles fix and separate the miniature fans 402, ensuring independent and stable operation of the two fans. Heat dissipation ducts 403 are fixedly embedded on both the left and right sides of the heat dissipation box 401. An air collection hood 404 is fixedly connected to the air inlet of each duct. The air inlet of the air collection hood 404 corresponds to the air outlet of the miniature fans 402, allowing the hood to collect the airflow from the miniature fans 402 and improve airflow efficiency. The end of the heat dissipation duct 403 away from the air collection cover 404 extends into the interior of the strip shell 314, so that the heat dissipation airflow and the dehumidification airflow share the strip shell 314 and the air outlet 315, realizing the integrated circulation of heat dissipation and dehumidification airflow.

[0046] An electromagnetic switch valve is fixedly installed on the surface of the heat dissipation duct 403. The electromagnetic switch valve can automatically control the opening and closing of the heat dissipation duct 403 according to the internal temperature, realizing intelligent start and stop of the heat dissipation function. A semiconductor cooling chip 405 is fixedly embedded in the inner rear wall of the heat dissipation box 401. When the semiconductor cooling chip 405 is energized, it generates a cooling effect, which can quickly reduce the temperature of the circulating air, cope with the rapid temperature rise under high current conditions, and solve the problems of insufficient heat dissipation capacity and excessive temperature rise of traditional boxes. A heat dissipation fan 406 is fixedly installed on the back of the heat dissipation box 401. The air inlet of the heat dissipation fan 406 corresponds to the heat dissipation end of the semiconductor cooling chip 405. The output end of the heat dissipation fan 406 is fixedly connected to the heat exhaust pipe 407. The end of the heat exhaust pipe 407 away from the heat dissipation fan 406 extends to the outside of the metering box 1. The heat generated by the operation of the semiconductor cooling chip 405 is quickly extracted by the heat dissipation fan 406 and discharged to the outside of the box through the heat exhaust pipe 407, avoiding heat accumulation inside the box and ensuring continuous and stable cooling effect.

[0047] A temperature and humidity sensor 408 is fixedly installed on the lower surface of the heat dissipation box 401. The temperature and humidity sensor 408 monitors the temperature and humidity data inside the metering chamber 1 in real time and transmits the signal to the control unit to realize intelligent monitoring and automatic adjustment of temperature and humidity. When the humidity inside the chamber exceeds the standard, the dehumidification mechanism 3 is automatically activated; when the temperature exceeds the standard, the internal circulation heat dissipation mechanism 4 is automatically activated, realizing fully intelligent unattended operation. An air inlet 409 is opened on the lower surface of the heat dissipation box 401. A filter screen is fixedly installed at the bottom of the air inlet 409. The air inlet 409 is located between two miniature fans 402, and the position of the air inlet 409 corresponds to the air intake end of the miniature fans 402. Hot air inside the chamber enters the heat dissipation box 401 through the air inlet 409, is filtered by the filter screen, and is then sucked in by the miniature fans 402, preventing dust from entering the interior and causing blockage or damage, and ensuring the long-term stable operation of the heat dissipation system.

[0048] A limiting mounting shell 6 is fixedly connected to the lower surface of the metering chamber 1. A collection box 7 is inserted and installed inside the limiting mounting shell 6. A dust collection port is opened on the lower surface of the metering chamber 1, and the position of the dust collection port corresponds to that of the collection box 7. The dust collection port is located directly below the arc-shaped dustproof net 307. The dust shaken off by the arc-shaped dustproof net 307 falls directly into the collection box 7 through the dust collection port. The collection box 7 adopts a pull-out insertion structure, which can be quickly disassembled and cleaned without opening the entire metering chamber 1. The operation is simple and convenient.

[0049] Working principle: When the temperature and humidity sensor 408 detects that the humidity inside the metering box 1 is too high, the controller starts the drive motor 502. The drive motor 502 drives the drive bar 503 and the worm gear 504 to rotate. The worm gear 504 and the worm wheel 505 mesh to drive the rotating shaft 308 to rotate. The rotating shaft 308 drives the surface rotating cam 309 to rotate. The rotating cam 309 periodically lifts the movable plate 306. With the reset action of the compression spring 305, the movable plate 306 and the arc-shaped dustproof net 307 vibrate continuously, shaking off the dust filtered on the surface of the dustproof net. When the drive mechanism 5 is closed, the dust falls into the collection box 7 below through the dust collection port for storage, realizing automatic dust removal and cleaning without manual intervention.

[0050] Simultaneously, the rotating shaft 308 drives the first synchronous pulley 506 to rotate, which in turn drives the second synchronous pulley 509 and the transmission shaft 507 to rotate via the synchronous belt 510. The high-speed rotation of the air guide vanes 508 on the surface of the transmission shaft 507 generates directional airflow, drawing air from inside the chamber through the air intake holes 310 on the surface of the protective cover 303, and then sending it into the dehumidification box 301 through the air inlet 311. After the air passes through the arc-shaped dustproof net 307 to filter dust, the activated carbon dehumidification plate 302 adsorbs moisture, forming dry air. Under the action of airflow pressure, the dry air enters the air guide hood 312 and the air guide pipe 313, and finally is evenly sent into the upper and lower chambers of the chamber through the air outlet holes 315 on the surface of the strip shell 314, realizing circulating dehumidification, inhibiting condensation formation, and maintaining a dry internal environment.

[0051] When the temperature and humidity sensor 408 detects that the internal temperature exceeds the standard, the internal circulation cooling mechanism 4 is automatically activated. The micro fan 402 starts, drawing hot air from inside the chamber into the heat dissipation box 401 through the air inlet 409. The thermoelectric cooler 405 is energized to cool the air, reducing the temperature of the circulating air. The cooled air is then sent into the strip shell 314 through the air collection hood 404 and the heat dissipation duct 403, where it mixes with the dehumidifying airflow and is blown out evenly, quickly reducing the internal temperature. The heat generated by the thermoelectric cooler 405 is extracted by the cooling fan 406 and discharged to the outside of the chamber through the heat exhaust pipe 407, preventing internal heat accumulation.

Claims

1. A compact, moisture-proof electricity metering box, comprising a metering box body (1), characterized in that: The metering box (1) is fixedly provided with a partition (2), and the metering box (1) is provided with a dehumidification mechanism (3) and an internal circulation heat dissipation mechanism (4). The dehumidification mechanism (3) includes a moisture-absorbing box (301) fixedly connected to the bottom wall of the metering box (1). A removable and replaceable activated carbon dehumidification plate (302) is installed inside the moisture-absorbing box (301). Protective covers (303) are fixedly installed on both the left and right sides of the moisture-absorbing box (301). Limiting baffles (304) are fixedly installed on both the left and right side walls of the moisture-absorbing box (301). Several compression springs (305) are fixedly connected to the lower surface of the limiting baffles (304). A movable plate (306) is fixed to the bottom end of the spring (305), and an arc-shaped dustproof net (307) is fixedly connected between the two movable plates (306). Two rotating shafts (308) are rotatably connected between the front and rear inner walls of the moisture absorption box (301). The rotating shafts (308) are located directly below the movable plates (306), and a number of rotating cams (309) are fixedly connected to the surface of the rotating shafts (308). The rotating cams (309) overlap with the lower surface of the movable plates (306).

2. The compact, moisture-proof power metering box according to claim 1, characterized in that: The front of the moisture-absorbing box (301) is fixed with a driving mechanism (5). The driving mechanism (5) includes a driving box (501). A driving motor (502) is fixed on the inner side wall of the driving box (501). A driving crossbar (503) is fixedly connected to the output end of the driving motor (502). Two worm gears (504) are fixedly connected to the surface of the driving crossbar (503). The front ends of the two rotating shafts (308) extend into the interior of the driving box (501) and are fixedly connected with worm wheels (505). The two worm gears (504) mesh with the two worm wheels (505) respectively.

3. A compact, moisture-proof power metering box according to claim 2, characterized in that: The surface of the rotating shaft (308) is fixedly connected to a first synchronous wheel (506), and a transmission shaft (507) is rotatably connected between the front and rear inner walls of the protective cover (303). A guide vane (508) is fixedly connected to the surface of the transmission shaft (507), and several guide vanes (508) are evenly distributed in a ring array on the surface of the transmission shaft (507).

4. A compact, moisture-proof power metering box according to claim 3, characterized in that: The protective cover (303) has several air intake holes (310) on its side. The air intake holes (310) are arranged in a straight line array on the surface of the protective cover (303). The position of the air intake holes (310) corresponds to the air guide plate (508).

5. A compact, moisture-proof power metering box according to claim 4, characterized in that: The moisture-absorbing box (301) has air inlets (311) on both the left and right sides. The positions of the air inlets (311) correspond to the air guide plate (508). The air inlets (311) and the suction holes (310) are symmetrically distributed on the left and right sides of the air guide plate (508). The air inlets (311) are located below the arc-shaped dustproof net (307), which is located directly below the activated carbon dehumidification plate (302).

6. A compact, moisture-proof power metering box according to claim 5, characterized in that: The front end of the drive shaft (507) extends into the interior of the drive box (501) and is fixedly connected to a second synchronous pulley (509). The position of the second synchronous pulley (509) corresponds to that of the first synchronous pulley (506). A synchronous belt (510) is installed between the first synchronous pulley (506) and the second synchronous pulley (509). The first synchronous pulley (506) and the second synchronous pulley (509) are connected by the synchronous belt (510).

7. A compact, moisture-proof power metering box according to claim 6, characterized in that: The surface of the moisture-absorbing box (301) is fixedly embedded with an air guide hood (312), and the output end of the air guide hood (312) is fixedly connected with an air guide pipe (313). The upper and lower surfaces of the partition (2) are fixedly connected with corresponding strip shells (314). The end of the air guide pipe (313) away from the air guide hood (312) extends into the interior of the strip shell (314). The front and rear surfaces of the strip shell (314) are provided with several air outlet holes (315).

8. A compact, moisture-proof power metering box according to claim 7, characterized in that: The internal circulation heat dissipation mechanism (4) includes a heat dissipation box (401) fixedly connected to the top wall of the metering box (1). Two vertical baffles are fixedly connected to the inner wall of the heat dissipation box (401). A miniature fan (402) is fixedly embedded on the surface of each of the two vertical baffles. Heat dissipation ducts (403) are fixedly embedded on the left and right sides of the heat dissipation box (401). An air collection hood (404) is fixedly connected to the air inlet of the air collection hood (404). The air inlet of the air collection hood (404) corresponds to the air outlet of the miniature fan (402). The end of the heat dissipation duct (403) away from the air collection hood (404) extends into the interior of the strip shell (314).

9. A compact, moisture-proof power metering box according to claim 8, characterized in that: An electromagnetic switch valve is fixedly installed on the surface of the heat dissipation duct (403). A semiconductor cooling chip (405) is fixedly embedded in the inner rear wall of the heat dissipation box (401), and a heat dissipation fan (406) is fixedly installed on the back of the heat dissipation box (401). The air inlet of the heat dissipation fan (406) corresponds to the heat dissipation end of the semiconductor cooling chip (405), and the output end of the heat dissipation fan (406) is fixedly connected to a heat exhaust pipe (407). The heat exhaust pipe (407) is far away from the heat dissipation duct. One end of the hot air blower (406) extends to the outside of the metering box (1). A temperature and humidity sensor (408) is fixedly installed on the lower surface of the heat dissipation box (401). An air inlet (409) is opened on the lower surface of the heat dissipation box (401). A filter screen is fixedly installed at the bottom of the air inlet (409). The air inlet (409) is located between two miniature fans (402), and the position of the air inlet (409) corresponds to the air inlet end of the miniature fan (402).

10. A compact, moisture-proof power metering box according to claim 9, characterized in that: The lower surface of the metering box (1) is fixedly connected to a limiting mounting shell (6), and a collection box (7) is inserted and installed inside the limiting mounting shell (6). A dust collection port is opened on the lower surface of the metering box (1), and the position of the dust collection port corresponds to that of the collection box (7). The dust collection port is located directly below the arc-shaped dustproof net (307).

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