Distribution box shell with moisture-proof performance

Abstract

The invention relates to the technical field of distribution box equipment, in particular to a distribution box shell with moisture-proof performance, which comprises a base, the top of the base is provided with an outgoing line and a metering cabinet body, the top of the base is provided with an incoming line cabinet assembly, and the incoming line cabinet assembly is internally provided with a circuit device supporting assembly. An air circulation and dehumidification assembly is further arranged in the wire inlet cabinet assembly. A grounding lightning protection device is arranged at the bottom of the circuit device supporting assembly. Through the arrangement of the moisture-proof cover and the cooperation of the first annular sliding rail, the second annular sliding rail, the arc-shaped sealing plate, the first limiting rod, the second limiting rod and the lock, the good sealing effect is achieved. The rotary seal and the tapered top cover further enhance protection of the circuit devices. The sealing structure can effectively prevent moisture, dust and other impurities from entering the area where the circuit device is located, the risk that the circuit device is damaged due to moisture and pollution is reduced, and the service life of the circuit device is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of distribution box equipment, and in particular to a distribution box housing with moisture-proof performance. Background Art

[0002] Traditional distribution boxes have numerous shortcomings in their moisture-proofing measures. Some rely solely on simple sealing structures, which are unable to effectively cope with changes in air humidity in humid environments. In areas with high humidity, such as coastal areas and basements, moisture in the air can easily penetrate into the distribution box through tiny gaps. Due to the lack of effective air circulation and dehumidification mechanisms, the humidity inside the distribution box gradually increases, causing condensation on the surfaces of circuit components. These condensation droplets not only cause circuit shorts but also accelerate corrosion of metal components, significantly shortening the service life of circuit components. Furthermore, the air filtration function of traditional distribution boxes is weak and cannot effectively prevent the entry of impurities such as dust and sand. These impurities combine with moisture to further damage the circuit components.

[0003] Traditional designs also have flaws in supporting and managing circuit components. Circuit components are typically fixed in their installation, lacking flexibility. When inspecting or replacing a component, limited space and fixed component locations make this operation extremely inconvenient, increasing maintenance costs and time. Regarding wiring, wires are often arranged haphazardly within the distribution box, lacking proper organization and routing. This not only affects the aesthetics of the distribution box but, more importantly, makes troubleshooting wiring issues extremely difficult in the event of a fault, prolonging troubleshooting time and impacting power supply continuity. Furthermore, circuit components generate heat during operation. Traditional distribution boxes lack effective heat dissipation design, preventing this heat from dissipating quickly. This results in excessively high temperatures within the box, impacting the performance and stability of the circuit components.

[0004] Patent publication number: CN119093175A proposes a power distribution cabinet, comprising: a cabinet body, the cabinet body having a storage space and an opening connected to the storage space, the opening being arranged on the front side of the cabinet body; a door body, the door body being openably and closably arranged at the opening; a mounting frame for mounting electrical components, the mounting frame being movably arranged in the storage space along the front-to-back direction of the cabinet body; a first driving member, disposed in the storage space, the first driving member driving the mounting frame to move; wherein the mounting frame has a maintenance position and a working position, and when the mounting frame is in the maintenance position, the distance between the mounting frame and the opening is smaller than the distance between the mounting frame and the opening when the mounting frame is in the working position. The technical solution of this application effectively solves the problem of inconvenient maintenance of electrical components in power distribution cabinets in the related art.

[0005] Regarding the above-mentioned related technologies, the inventors found the following defects: 1. Although the existing device has made certain improvements to the layout, the internal space of the distribution cabinet is limited. In some complex installation and maintenance scenarios, it is difficult for operators to obtain the optimal operating angle; 2. The existing device has not made regular improvements to the lines. When operators maintain the distribution box, a clean and tidy line layout can assist operators to grasp the environment of the internal lines of the distribution box as soon as possible, thereby improving the efficiency of maintenance; 3. The existing device does not perform moisture-proof treatment on the distribution box, and only performs simple heat dissipation through the ventilation holes on the side of the distribution box. When in a humid and hot environment for a long time, the circuit components inside the distribution box are easily damp, thereby aggravating damage to the circuit components. Summary of the Invention

[0006] In view of the deficiencies in the prior art and in order to solve the problems mentioned in the above background technology, the present application provides a distribution box housing with moisture-proof performance.

[0007] To achieve the above objectives, the present invention provides the following technical solutions: a distribution box housing with moisture-proof performance, comprising a base, an outlet and metering cabinet body provided on the top of the base, an incoming cabinet assembly provided on the top of the base, a circuit device support assembly provided inside the incoming cabinet assembly, an air circulation and dehumidification assembly provided inside the incoming cabinet assembly, and a grounding lightning protection device provided at the bottom of the circuit device support assembly;

[0008] The incoming cabinet assembly includes an incoming cabinet body, an incoming cabinet top cover, an incoming cabinet door and an incoming cabinet support plate. The incoming cabinet body is fixedly installed on the top of the base, the incoming cabinet top cover is fixedly installed on the top of the incoming cabinet body, the incoming cabinet door is movably installed on one side of the incoming cabinet top cover, and the incoming cabinet support plate is fixedly installed inside the incoming cabinet body; the incoming cabinet support plate is used to support various equipment installed inside the incoming cabinet, such as circuit device support components and some components of the air circulation and dehumidification components, to ensure that these components work stably in appropriate positions.

[0009] A circuit device support assembly, the circuit device support assembly includes a first rotatable support frame and a second rotatable support frame, the first rotatable support frame and the second rotatable support frame are symmetrically arranged, the first rotatable support frame and the second rotatable support frame each include a first support frame base, a first support frame positioning plate, an internal threaded hole, a wire outlet hole, a square wire inlet grid, an electrical installation plate, a wire inlet square hole, a second support frame base, a second support frame positioning plate and a sealing gasket, the first support frame base is arranged on the top of the wire inlet cabinet support plate, the top of the first support frame base is fixedly installed with a first support frame positioning plate, one side of the first support frame positioning plate is penetrated with an internal threaded hole, the top of the first support frame base is penetrated with a wire outlet hole, one side of the first support frame positioning plate is fixedly installed with a square wire inlet grid, one side of the square wire inlet grid is An electrical mounting plate is provided, which is fixedly mounted on one side of the first support frame positioning plate by bolts, and a square wire entry hole is provided through the electrical mounting plate near the square wire entry grid, and one side of the first support frame positioning plate is fixedly connected to the second support frame positioning plate by bolts, and the second support frame positioning plate is fixedly connected to a sealing gasket on one side close to the first support frame positioning plate, and the bottom of the second support frame positioning plate is fixedly connected to the second support frame base; the main board of the electrical mounting plate is used to fix circuit devices, provide a mounting plane for the circuit devices, and ensure that they are stably mounted on the support frame, and the side panels on both sides are connected to the first support frame positioning plate and the second support frame positioning plate by bolts to enhance the stability of the mounting plate, and the distance between the main board and the square wire entry grid matches the diameter of the wire outlet hole, which is convenient for the lead-out of the wires after being connected to the circuit devices.

[0010] An air circulation and dehumidification component includes a first pipe, a filter box, a second pipe, a circulation pump, a first temperature and humidity sensor, a second temperature and humidity sensor, an air outlet valve, a first isolation plate, a first air inlet, a second isolation plate, a second air inlet, a third air inlet, a molecular sieve dehumidification filter element, a packaging plate and a linear sealing plate. The first pipe is fixedly installed on the top of the incoming cabinet body, an electromagnetic opening and closing valve is provided inside the first pipe, the top of the first pipe is connected to the filter box, the top of the filter box is connected to the second pipe, the top of the second pipe is connected to the circulation pump, the bottom of the filter box is provided with a first temperature and humidity sensor, and the top of the filter box is provided with a second pipe. The filter box has two temperature and humidity sensors. An outlet valve is installed on one side of the filter box. A first isolation plate is installed inside the filter box. A first air inlet is formed through the first isolation plate on the side near the second temperature and humidity sensor. A second isolation plate is installed at the bottom of the first isolation plate. A second air inlet is formed on the side near the outlet valve of the second isolation plate. A third air inlet is formed at the connection between the filter box and the first pipe. A packaging plate is bolted to the side of the filter box near the first pipe. A linear sealing plate is fixedly connected to the packaging plate on the side near the filter box. A molecular sieve dehumidification filter element is installed on one side of the linear sealing plate. The molecular sieve dehumidification filter element is movably mounted inside the filter box. The first and second temperature and humidity sensors are used to detect temperature and humidity conditions at different locations within the filter box to control dehumidification operations, etc. The outlet valve controls the discharge of air. The first and second isolation plates divide the internal space of the filter box, allowing air to flow along a predetermined path. The air inlet ensures smooth air circulation between different areas. The molecular sieve dehumidification filter element removes moisture from the air to achieve dehumidification. The packaging plate and the linear sealing plate are used to fix and seal the dehumidification filter element.

[0011] Optionally, the first rotatable support frame and the second rotatable support frame further include a turntable base, a C-shaped slide groove, a block, a turntable bearing seat, a moisture-proof cover, a first annular slide rail, a second annular slide rail, an arc-shaped sealing plate, a first limit rod, a second limit rod, a lock, a rotating seal, a conical top cover, an outlet pipe and an air outlet hole. The turntable base is fixedly mounted on the top of the incoming cabinet support plate, and a C-shaped slide groove is provided on the top of the turntable base. A block is movably installed inside the C-shaped slide groove, and the top of the block is fixedly connected to the turntable bearing seat, and the turntable bearing seat is movably mounted on the top of the turntable base. The moisture-proof cover is movably sleeved At the top of the turntable bearing seat, the bottom of the moisture-proof cover is fixedly sleeved with a first annular slide rail, the top of the moisture-proof cover is fixedly sleeved with a second annular slide rail, an arc-shaped sealing plate is movably installed between the first annular slide rail and the second annular slide rail, one side of the arc-shaped sealing plate is provided with a first limiting rod, the other side of the arc-shaped sealing plate is provided with a second limiting rod, one side of the second limiting rod is provided with a lock, the top of the moisture-proof cover is movably sleeved with a rotary seal, the top of the rotary seal is movably sleeved with a conical top cover, one side of the conical top cover is connected to an outlet pipe, and an air outlet hole is opened through the top of the conical top cover.

[0012] Optionally, the circuit device support assembly further includes a first cable management tray, a cable management rack, a main cable supply pipe, a second cable management tray and a bundled wire body. The first cable management tray is fixedly mounted inside the circular tube formed by the first support frame positioning plate and the second support frame positioning plate. The top of the first cable management tray is provided with a cable management rack. The top of the first cable management tray is fixedly connected to the main cable supply pipe. The top of the main cable supply pipe is fixedly connected to the second cable management tray. The inside of the main cable supply pipe is provided with a bundled wire body. The first cable management tray and the second cable management tray are used to organize and guide the wires, making the arrangement of the wires more neat and orderly. The cable management rack can further organize and fix the wires. The main cable supply pipe provides a protective channel for the bundled wire body. The bundled wire body is used to connect various circuit devices to realize the transmission of electrical energy and signals.

[0013] Optionally, the bottom of the first support frame base and the second support frame base are both provided with semicircular rings, and the semicircular rings together constitute a circular clamping ring, the inner diameter of the circular tube jointly constituted by the first support frame positioning plate and the second support frame positioning plate is equal to the outer diameter of the circular clamping ring constituted by the first support frame base and the second support frame base, the first support frame base, the first support frame positioning plate, the second support frame base and the second support frame positioning plate together constitute a circular circuit device carrying platform through bolts, and any circuit device carrying platform can be longitudinally assembled with another circuit device carrying platform, and the bottom of the first support frame base and the second support frame base are both provided with lighting fixtures.

[0014] Optionally, the starting end of the bundled wire body is set at the bottom of the base, and the starting end of the bundled wire body is electrically connected to the circuit breaker. After the branch lines of the bundled wire body pass through the wire management rack, the square wire entry grid and the wire entry square hole in turn, they are electrically connected to circuit devices such as contactors, fuses and relays respectively. The second wire management tray is fixedly installed on the top of the square wire entry grid, and the bundled wire body is set through the inside of the main supply line pipe.

[0015] Optionally, the electrical installation board includes a main board for fixing circuit devices and side panels symmetrically arranged on the left and right sides, the side panels of the electrical installation board are respectively installed on one side of the first support frame positioning plate and the second support frame positioning plate by bolts, the distance between the main board of the electrical installation board and the square wire entry grid is equal to the diameter of the wire outlet hole, and the wire outlet hole is symmetrically opened on the top of the first support frame base and the second support frame base with the square wire entry grid as the center.

[0016] Optionally, the air circulation and dehumidification component also includes a heat exchanger, a tee, a first blast pipe and a second blast pipe. The heat exchanger is fixedly installed at the bottom of the incoming cabinet support plate. One side of the heat exchanger is connected to the tee, one side of the tee is connected to the first blast pipe through a pipeline, and the other side of the tee is connected to the second blast pipe through a pipeline.

[0017] Optionally, the air circulation and dehumidification component also includes an intake duct, an annular rain screen, a dust cover body, a filter, a first air baffle, a first one-way valve, a second air baffle and a second one-way valve, the intake duct being fixedly mounted on the top of the conical top cover, the top of the intake duct is provided with an annular rain screen, the top of the annular rain screen is provided with a dust cover body, and a filter is provided on one side of the dust cover body, the first baffle and the second baffle are symmetrically provided inside the intake duct, the first one-way valve is provided on one side of the first baffle, the second one-way valve is provided on one side of the second baffle, the second one-way valve only allows air to leave the intake duct through the conical top cover inside the first rotatable support frame, the first one-way valve only allows air to leave the intake duct through the conical top cover inside the second rotatable support frame, the intake duct is composed of a horizontal two-way pipe and a longitudinal straight pipe, and the straight pipe is not connected to the two-way pipe, and the straight pipe inside the intake duct is connected to the second pipe.

[0018] Optionally, the air intake pipe, circulation pump, second pipe, filter box, first pipe, heat exchanger, tee pipe, first blower pipe, second blower pipe and conical top cover together constitute an air circulation loop, wherein the air intake pipe is the air intake end of the air circulation loop, and the holes opened on the left and right sides of the air intake pipe are the air outlet ends of the air circulation loop.

[0019] Optionally, the first blast pipe is connected to the cavity inside the first rotatable support frame formed by a moisture-proof cover, a rotating seal and a conical top cover, and the second blast pipe is connected to the cavity inside the second rotatable support frame formed by a moisture-proof cover, a rotating seal and a conical top cover.

[0020] In summary, this application has the following beneficial technical effects:

[0021] 1. The present invention achieves rotation by providing a turntable base, C-shaped slides, clamping blocks, and a turntable bearing seat at the bottom of the first and second rotatable support frames. This design allows the position and angle of circuit components mounted on the electrical mounting plate to be flexibly adjusted according to actual operational requirements. When installing complex circuit connections or performing maintenance on a circuit component, operators can rotate the support frames to adjust the circuit component to a more convenient angle, greatly improving installation and maintenance convenience.

[0022] 2. The present invention utilizes a wiring arrangement system consisting of a first cable management tray, a cable management rack, a main supply cable tube, and a second cable management tray to neatly and orderly connect the bundled wires to various circuit components. This not only facilitates quick and accurate wiring during installation, but also allows maintenance personnel to more easily identify and track the routing of each wire during subsequent maintenance, reducing troubleshooting time caused by chaotic wiring. When a circuit component fails and requires inspection of its wiring connections, the clear wiring allows maintenance personnel to quickly locate the relevant wiring, improving repair efficiency.

[0023] 3. This invention achieves a good sealing effect by providing a moisture-proof cover, through the cooperation of the first and second annular slide rails, the curved sealing plate, the first and second limiting rods, and the lock. The rotating seal and conical top cover further enhance the protection of the circuit components. This multi-layer sealing structure effectively prevents moisture, dust, and other impurities from entering the area where the circuit components are located, significantly reducing the risk of damage to the circuit components due to moisture and contamination, and extending the service life of the circuit components. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of the device in the embodiment of the present application;

[0025] Figure 2 This is a schematic diagram of the main structure of the incoming line cabinet in the embodiment of the present application;

[0026] Figure 3 This is a schematic diagram of the main structure of the circuit device support assembly in an embodiment of the present application;

[0027] Figure 4 This is a schematic diagram of the exploded structure of the turntable in the embodiment of the present application;

[0028] Figure 5 This is a schematic diagram of the overall structure of the circuit device support frame housing in an embodiment of the present application;

[0029] Figure 6 This is a schematic diagram of the main structure of the circuit device support frame in an embodiment of the present application;

[0030] Figure 7 This is a schematic diagram of the exploded structure of the circuit device carrying platform in the embodiment of the present application;

[0031] Figure 8 This is a schematic diagram of the main structure of the cable management tray in an embodiment of the present application;

[0032] Figure 9 This is a schematic diagram of the main structure of the air circulation and dehumidification component in the embodiment of the present application;

[0033] Figure 10 This is a schematic diagram of the partial structure of the air circulation and dehumidification component in the embodiment of the present application;

[0034] Figure 11 This is a schematic structural diagram of a heat exchanger assembly in an embodiment of the present application;

[0035] Figure 12 This is a schematic diagram of the main structure of the filter screen in the embodiment of the present application;

[0036] Figure 13 This is a schematic diagram of the air flow direction of the filter box in the embodiment of the present application;

[0037] Figure 14 It is a schematic diagram of the air flow structure of the air circulation and dehumidification component in the embodiment of the present application.

[0038] Reference numerals: 1, base; 2, outgoing line and metering cabinet; 3, incoming line cabinet assembly; 301, incoming line cabinet body; 302, incoming line cabinet top cover; 303, incoming line cabinet door; 304, incoming line cabinet support plate; 4, circuit device support assembly; 41, first rotatable support frame; 42, second rotatable support frame; 401, turntable base; 402, C-shaped slide groove; 403, clamping block; 404, turntable bearing seat; 405, moisture-proof cover; 406, first annular slide rail; 407, second annular slide rail; 408, arc-shaped sealing plate; 409, first limiting rod; 410, second limiting rod; 411, lock; 412, rotating seal; 413, conical top cover; 414, outlet pipe; 415, air outlet; 416, first support frame base; 417, first support frame positioning plate; 418, internal threaded hole; 419, outlet hole; 420, square inlet grid; 421, electrical installation plate; 422, inlet square hole; 423, second support frame base; 424, second support frame positioning plate; 4 25. Sealing pad; 426. First cable tray; 427. Cable management rack; 428. Main supply line pipe; 429. Second cable tray; 430. Bundled wire body; 5. Air circulation and dehumidification components; 501. First pipeline; 502. Filter box; 503. Second pipeline; 504. Circulation pump; 505. Inlet pipeline; 506. First temperature and humidity sensor; 507. Second temperature and humidity sensor; 508. Exhaust valve; 509. Heat exchanger; 510. Tee pipe; 511. First blast Tube; 512, second blast pipe; 513, annular rain shield; 514, dust cover body; 515, filter screen; 516, first isolation plate; 517, first air inlet; 518, second isolation plate; 519, second air inlet; 520, third air inlet; 521, molecular sieve dehumidification filter element; 522, packaging plate; 523, linear sealing plate; 524, first air blocking plate; 525, first one-way valve; 526, second air blocking plate; 527, second one-way valve; 6, grounding lightning protection device. DETAILED DESCRIPTION

[0039] The following is combined with Figure 1-14 This application is described in further detail.

[0040] The embodiment of the present application discloses a distribution box housing with moisture-proof performance.

[0041] See also Figure 1 A distribution box housing with moisture-proof performance includes a base 1, characterized in that: an outgoing line and metering cabinet 2 is provided on the top of the base 1, an incoming line cabinet assembly 3 is provided on the top of the base 1, a circuit device support assembly 4 is provided inside the incoming line cabinet assembly 3, an air circulation and dehumidification assembly 5 is also provided inside the incoming line cabinet assembly 3, and a grounding lightning protection device 6 is provided at the bottom of the circuit device support assembly 4;

[0042] The incoming cabinet assembly 3 includes an incoming cabinet body 301, an incoming cabinet top cover 302, an incoming cabinet door 303, and an incoming cabinet support plate 304. The incoming cabinet body 301 is fixedly mounted on the top of the base 1, the incoming cabinet top cover 302 is fixedly mounted on the top of the incoming cabinet body 301, the incoming cabinet door 303 is movably mounted on one side of the incoming cabinet top cover 302, and the incoming cabinet support plate 304 is fixedly mounted inside the incoming cabinet body 301;

[0043] See also Figures 3 to 8 , circuit device support assembly 4, the circuit device support assembly 4 includes a first rotatable support frame 41 and a second rotatable support frame 42, the first rotatable support frame 41 and the second rotatable support frame 42 are symmetrically arranged, the first rotatable support frame 41 and the second rotatable support frame 42 both include a first support frame base 416, a first support frame positioning plate 417, an internal threaded hole 418, a wire outlet hole 419, a square wire grid 420, an electrical installation plate 421, a wire square hole 422, a second support frame base 423, a second support frame positioning plate 424 and a sealing gasket 425, the first support frame base 416 is arranged on the top of the incoming cabinet support plate 304, the first support frame base 416 is fixedly installed with a first support frame positioning plate 417, and one side of the first support frame positioning plate 417 An internal threaded hole 418 is provided through it, a wire outlet hole 419 is provided through it on the top of the first support frame base 416, a square wire inlet grid 420 is fixedly installed on one side of the first support frame positioning plate 417, an electrical installation plate 421 is provided on one side of the square wire inlet grid 420, the electrical installation plate 421 is fixedly installed on one side of the first support frame positioning plate 417 by bolts, a wire inlet square hole 422 is provided through it at a position of the electrical installation plate 421 close to the square wire inlet grid 420, a second support frame positioning plate 424 is fixedly connected to one side of the first support frame positioning plate 417 by bolts, a sealing gasket 425 is fixedly connected to the second support frame positioning plate 424 close to the side of the first support frame positioning plate 417, and a second support frame base 423 is fixedly connected to the bottom of the second support frame positioning plate 424;

[0044] The first rotatable support frame 41 and the second rotatable support frame 42 also include a turntable base 401, a C-shaped slide 402, a block 403, a turntable bearing seat 404, a moisture-proof cover 405, a first annular slide rail 406, a second annular slide rail 407, an arc-shaped sealing plate 408, a first limiting rod 409, a second limiting rod 410, a lock 411, a rotary seal 412, a conical top cover 413, an outlet pipe 414 and an air outlet 415. The turntable base 401 is fixedly installed on the top of the incoming cabinet support plate 304, and a C-shaped slide 402 is provided on the top of the turntable base 401. The C-shaped slide 402 is movably installed with a block 403. The top of the block 403 is fixedly connected to the turntable bearing seat 404. The turntable bearing seat 404 is movably installed on the top of the turntable base 401. The cover 405 is movably sleeved on the top of the turntable bearing seat 404, the bottom of the moisture-proof cover 405 is fixedly sleeved with a first annular slide rail 406, the top of the moisture-proof cover 405 is fixedly sleeved with a second annular slide rail 407, an arc-shaped sealing plate 408 is movably installed between the first annular slide rail 406 and the second annular slide rail 407, one side of the arc-shaped sealing plate 408 is provided with a first limiting rod 409, the other side of the arc-shaped sealing plate 408 is provided with a second limiting rod 410, one side of the second limiting rod 410 is provided with a lock 411, the top of the moisture-proof cover 405 is movably sleeved with a rotary seal 412, the top of the rotary seal 412 is movably sleeved with a conical top cover 413, one side of the conical top cover 413 is connected to an outlet pipe 414, and the top of the conical top cover 413 is penetrated by an air outlet hole 415.

[0045] The circuit device support assembly 4 also includes a first cable management tray 426, a cable management frame 427, a main supply cable tube 428, a second cable management tray 429 and a bundled wire body 430. The first cable management tray 426 is fixedly installed inside the circular tube formed by the first support frame positioning plate 417 and the second support frame positioning plate 424. The top of the first cable management tray 426 is provided with a cable management frame 427. The top of the first cable management tray 426 is fixedly connected to the main supply cable tube 428. The top of the main supply cable tube 428 is fixedly connected to the second cable management tray 429. The inside of the main supply cable tube 428 is provided with a bundled wire body 430.

[0046] The bottom of the first support frame base 416 and the bottom of the second support frame base 423 are both provided with semicircular rings, and the semicircular rings together constitute a circular retaining ring. The inner diameter of the circular tube formed by the first support frame positioning plate 417 and the second support frame positioning plate 424 is equal to the outer diameter of the circular retaining ring formed by the first support frame base 416 and the second support frame base 423. The first support frame base 416, the first support frame positioning plate 417, the second support frame base 423 and the second support frame positioning plate 424 together constitute a circular circuit device carrying platform through bolts, and any circuit device carrying platform can be longitudinally assembled with another circuit device carrying platform. The bottom of the first support frame base 416 and the second support frame base 423 are both provided with lighting fixtures.

[0047] The starting end of the bundled wire body 430 is set at the bottom of the base 1, and the starting end of the bundled wire body 430 is electrically connected to the circuit breaker. The branch lines of the bundled wire body 430 pass through the wire management rack 427, the square wire entry grid 420 and the wire entry square hole 422 in turn, and are electrically connected to circuit components such as contactors, fuses and relays respectively. The second wire management tray 429 is fixedly installed on the top of the square wire entry grid 420, and the bundled wire body 430 is set through the inside of the main supply line pipe 428.

[0048] The electrical installation board 421 includes a main board for fixing circuit components and side panels symmetrically arranged on the left and right sides. The side panels of the electrical installation board 421 are respectively installed on one side of the first support frame positioning plate 417 and the second support frame positioning plate 424 by bolts. The distance between the main board of the electrical installation board 421 and the square wire entry grid 420 is equal to the diameter of the wire outlet hole 419. The wire outlet hole 419 is symmetrically opened on the top of the first support frame base 416 and the second support frame base 423 with the square wire entry grid 420 as the center.

[0049] What needs to be further explained is: turntable base 401, C-shaped slide 402, clamping block 403, turntable bearing seat 404: the turntable base 401 is fixed on the top of the incoming line cabinet support plate 304, and the clamping block 403 is movably installed in the C-shaped slide 402 opened on the top, and the top of the clamping block 403 is fixedly connected to the turntable bearing seat 404, and the turntable bearing seat 404 is movably installed on the top of the turntable base 401. This series of components work together to enable the first rotatable support frame 41 and the second rotatable support frame 42 to realize the rotation function. During the installation and maintenance of the distribution box, the operator can adjust the position and angle of the circuit components conveniently by rotating the support frame body according to actual needs, which facilitates line connection, component maintenance and other operations, thereby improving the convenience and efficiency of work.

[0050] The first cable management tray 426 is fixedly mounted inside the circular tube formed by the first support frame positioning plate 417 and the second support frame positioning plate 424. It provides initial organization and guidance for the bundled wires 430. The bundled wires 430 are neatly arranged on the first cable management tray 426, preventing them from becoming tangled and facilitating subsequent routing.

[0051] A cable management rack 427 is located on top of the first cable management tray 426 to further organize and secure the wires. The design of the cable management rack 427 allows for the separation and securement of wires based on their number and routing, ensuring neat alignment and preventing interference. For example, when multiple wires with different functions are used, the cable management rack 427 can be used to organize them into categories for easier identification and maintenance.

[0052] The main supply cable conduit 428 connects the first cable management tray 426 and the second cable management tray 429, providing a protective channel for the bundled cable body 430. This not only protects the wires from physical damage but also ensures a more standardized routing of the wires within the support frame. Furthermore, the placement of the bundled cable body 430 within the main supply cable conduit 428 ensures stable power and signal transmission.

[0053] The second wire management tray 429 is fixed on the top of the main supply line tube 428 and installed on the top of the square wire entry grid 420 to reorganize and guide the wires passing through the main supply line tube 428 so that the wires can accurately reach the square wire entry grid 420 and then be connected to the circuit components on the electrical installation board 421.

[0054] The main cable bundle 430 begins at the bottom of base 1 and is electrically connected to the circuit breaker. Branch cables then pass through cable management frame 427, square cable entry grid 420, and square cable entry holes 422 before being electrically connected to circuit components such as contactors, fuses, and relays. As a carrier for power and signal transmission, the cable bundle 430, through the organization and guidance of various cable management components, ensures stable and reliable connections between circuit components, ensuring the normal operation of the circuit system within the distribution box.

[0055] See also Figures 9 to 14, air circulation and dehumidification component 5, the air circulation and dehumidification component 5 includes a first pipe 501, a filter box 502, a second pipe 503, a circulation pump 504, a first temperature and humidity sensor 506, a second temperature and humidity sensor 507, an air outlet valve 508, a first isolation plate 516, a first air inlet 517, a second isolation plate 518, a second air inlet 519, a third air inlet 520, a molecular sieve dehumidification filter element 521, a packaging plate 522 and a linear sealing plate 523, the first pipe 501 is fixedly installed on the top of the incoming cabinet body 301, an electromagnetic opening and closing valve is provided inside the first pipe 501, the top of the first pipe 501 is connected to the filter box 502, the top of the filter box 502 is connected to the second pipe 503, the top of the second pipe 503 is connected to the circulation pump 504, the bottom of the filter box 502 is provided with a first temperature and humidity sensor 506, the top of the filter box 502 A second temperature and humidity sensor 507 is provided at the bottom, an air outlet valve 508 is provided on one side of the filter box 502, a first isolation plate 516 is provided inside the filter box 502, a first air inlet 517 is penetrated through the side of the first isolation plate 516 close to the second temperature and humidity sensor 507, a second isolation plate 518 is provided at the bottom of the first isolation plate 516, a second air inlet 519 is provided on the side of the second isolation plate 518 close to the air outlet valve 508, a third air inlet 520 is provided at the connection between the filter box 502 and the first pipe 501, a packaging plate 522 is fixedly installed on the side of the filter box 502 close to the first pipe 501 by bolts, a linear sealing plate 523 is fixedly connected to the packaging plate 522 close to the side of the filter box 502, a molecular sieve dehumidification filter element 521 is provided on one side of the linear sealing plate 523, and the molecular sieve dehumidification filter element 521 is movably installed inside the filter box 502.

[0056] The air circulation and dehumidification component 5 also includes a heat exchanger 509, a tee pipe 510, a first blast pipe 511 and a second blast pipe 512. The heat exchanger 509 is fixedly installed at the bottom of the incoming cabinet support plate 304. One side of the heat exchanger 509 is connected to the tee pipe 510, one side of the tee pipe 510 is connected to the first blast pipe 511 through a pipeline, and the other side of the tee pipe 510 is connected to the second blast pipe 512 through a pipeline.

[0057] The air circulation and dehumidification component 5 also includes an air intake duct 505, an annular rain shield 513, a dust cover body 514, a filter 515, a first air blocker 524, a first one-way valve 525, a second air blocker 526 and a second one-way valve 527. The air intake duct 505 is fixedly mounted on the top of the conical top cover 413. The top of the air intake duct 505 is provided with an annular rain shield 513, the top of the annular rain shield 513 is provided with a dust cover body 514, and a filter 515 is provided on one side of the dust cover body 514. The interior of the air intake duct 505 is symmetrically provided with a first air blocker 524 and a second air blocker 526. The air blocking plate 526, a first one-way valve 525 is provided on one side of the first air blocking plate 524, and a second one-way valve 527 is provided on one side of the second air blocking plate 526. The second one-way valve 527 only allows air to escape from the intake pipe 505 through the conical top cover 413 inside the first rotatable support frame 41, and the first one-way valve 525 only allows air to escape from the intake pipe 505 through the conical top cover 413 inside the second rotatable support frame 42. The intake pipe 505 is composed of a horizontal two-way pipe and a longitudinal straight pipe, and the straight pipe is not connected to the two-way pipe, and the straight pipe inside the intake pipe 505 is connected to the second pipe 503.

[0058] The air intake pipe 505, the circulation pump 504, the second pipe 503, the filter box 502, the first pipe 501, the heat exchanger 509, the tee pipe 510, the first blower pipe 511, the second blower pipe 512 and the conical top cover 413 together constitute an air circulation loop, wherein the air intake pipe 505 is the air intake end of the air circulation loop, and the holes opened on the left and right sides of the air intake pipe 505 are the air outlet ends of the air circulation loop.

[0059] The first blast pipe 511 is connected to the cavity inside the first rotatable support frame 41 formed by the moisture-proof cover 405, the rotating seal 412 and the conical top cover 413, and the second blast pipe 512 is connected to the cavity inside the second rotatable support frame 42 formed by the moisture-proof cover 405, the rotating seal 412 and the conical top cover 413.

[0060] Further explanation is needed:

[0061] First pipe 501 serves as the starting point for air circulation, drawing air from outside the distribution box into filter box 502. An internal solenoid valve precisely controls the timing and flow of air according to system requirements. When the humidity inside the distribution box reaches a certain threshold, the valve opens, allowing air in and initiating the dehumidification process. When the humidity returns to normal, the valve closes, reducing unnecessary air exchange.

[0062] The filter box 502 is divided into different zones by a first isolation plate 516 and a second isolation plate 518, allowing air to flow along specific paths. The first, second, and third air inlets 517, 519, 520 ensure orderly air flow between these zones. A molecular sieve dehumidification filter element 521 is installed internally, effectively removing moisture from the air by leveraging the molecular sieve's strong adsorption properties for water molecules. The filter box 502 also provides a certain degree of physical filtration, initially intercepting dust, particles, and other impurities in the air, creating a dry, clean air environment within the distribution box.

[0063] The second pipe 503 connects the filter box 502 and the circulation pump 504, and transmits the air after filtering and dehumidification to the circulation pump 504, providing a circulation path for subsequent air circulation.

[0064] Circulation pump 504, the power source for air circulation, mechanically creates a pressure differential, driving air through the air circulation and dehumidification assembly 5. This ensures that air circulates between the various components at a consistent velocity and flow rate, guaranteeing effective dehumidification and air conditioning. If humidity levels within the distribution box are uneven, circulation pump 504 accelerates air flow, ensuring a more even distribution of dry air throughout the box.

[0065] The first temperature and humidity sensor 506, mounted at the bottom of the filter box 502, primarily monitors the temperature and humidity of the air entering the filter box 502. It collects data in real time and feeds this data back to the control system. If high humidity is detected in the incoming air, the control system adjusts the operating frequency of the circulation pump 504 or the operating intensity of the molecular sieve dehumidification filter element 521 based on this data to enhance the dehumidification effect.

[0066] Second temperature and humidity sensor 507, located at the top of filter box 502, monitors the temperature and humidity of air flowing out of filter box 502 after dehumidification and other processing. This sensor compares the data with that of first temperature and humidity sensor 506, helping the control system determine the effectiveness of dehumidification and air conditioning. If the top temperature and humidity sensor detects that the humidity is still below standard, the control system can further optimize the dehumidification process and extend the air's residence time within filter box 502.

[0067] Outlet valve 508, located on one side of filter box 502, primarily controls the discharge of treated air. After the air undergoes a series of processes, including dehumidification and filtration, outlet valve 508 opens or closes according to system instructions. For example, when air circulation within the distribution box reaches a certain level and the humidity and cleanliness levels meet requirements, outlet valve 508 adjusts its opening appropriately to discharge the treated air, maintaining the dynamic balance of air within the distribution box.

[0068] Heat exchanger 509, fixed to the bottom of the incoming cabinet support plate 304, plays a key role in regulating air temperature within the air circulation system. Through the principle of heat exchange, it can heat or cool the circulating air. In humid weather, when the air entering the distribution box is high in humidity and low in temperature, heat exchanger 509 can appropriately heat the air, improving dehumidification efficiency while preventing condensation inside the distribution box due to low air temperature.

[0069] A tee pipe 510 connects the heat exchanger 509 with the first and second blast pipes 511 and 512. Its function is to divert the air after it has been treated by the heat exchanger 509. Air flow is appropriately distributed according to the needs of different areas within the distribution box, ensuring that both the first and second rotatable support frames 41 and 42 receive air of appropriate temperature and humidity.

[0070] The first and second blast pipes 511 and 512 communicate with the cavities within the first and second rotatable support frames 41 and 42, respectively, formed by the moisture-proof cover 405, the rotating seal 412, and the conical top cover 413. These blast pipes deliver the diverted air to the interiors of the corresponding support frames, achieving air circulation and regulating temperature and humidity in the area where the circuit components are located, protecting the components from moisture and temperature fluctuations.

[0071] Inlet duct 505 serves as the air intake for the air circulation loop. Its unique structural design features a horizontal double-pass pipe and a vertical straight pipe, with the straight pipe not connected to the double-pass pipe, ensuring efficient air intake and proper distribution. It is fixed to the top of the conical top cover 413 and draws outside air into the system.

[0072] An annular rain screen 513 is installed on top of the air intake duct 505 to effectively prevent rainwater and other liquids from entering the air intake duct 505, thereby preventing electrical failures caused by rainwater intrusion. For example, in an outdoor distribution box, when it rains, the annular rain screen 513 ensures that rainwater slides down its surface and does not enter the air circulation system.

[0073] Dust cover body 514 and filter screen 515 Dust cover body 514 provides overall protection for intake duct 505, preventing the entry of larger foreign matter. Filter screen 515 further filters the incoming air, intercepting tiny particles such as dust and sand, ensuring the cleanliness of the air entering the air circulation system, reducing clogging of components such as the molecular sieve dehumidification filter element 521, and extending their service life.

[0074] First and second air blockers 524, 526 are symmetrically positioned within intake duct 505, working in conjunction with first and second one-way valves 525, 527. Their presence alters the air flow path within intake duct 505, directing air flow in a specific direction. For example, after air enters intake duct 505, the air blockers block and guide it, allowing it to better interact with first and second one-way valves 525, 527.

[0075] The first and second one-way valves 525 and 527 respectively control the direction in which air exits the intake duct 505 from the conical top cover 413 within the first and second rotatable support frames 42 and 41. This one-way flow design ensures orderly air flow throughout the entire air circulation loop, preventing backflow and ensuring stable dehumidification and air conditioning. For example, when the humidity inside the first rotatable support frame 41 is high, the second one-way valve 527 opens, expelling the moist air into the intake duct 505, where it is then re-circulated after treatment.

[0076] The working principle of the above embodiment is:

[0077] 1. Air intake process: Air first enters the system through the intake duct 505. The annular rain shield 513 at the top of the intake duct 505 prevents rainwater from entering, and the dust cover body 514 and the filter screen 515 filter out dust and other impurities. The air entering the intake duct 505 is guided by the first air baffle 524 and the second air baffle 526, and flows in a specific direction through the first one-way valve 525 and the second one-way valve 527. Among them, the second one-way valve 527 allows air to escape from the intake duct 505 from the conical top cover 413 inside the first rotatable support frame 41, and the first one-way valve 525 allows air to escape from the intake duct 505 from the conical top cover 413 inside the second rotatable support frame 42. The straight pipe inside the intake duct 505 is connected to the second pipe 503, and the air enters the circulation system from there.

[0078] 2. Circulation and Filtration Dehumidification Process: Air entering the second pipe 503 is transported to the filter box 502 by the circulation pump 504. The air within the filter box 502 flows along a predetermined path, guided by the first isolation plate 516, the first air inlet 517, the second isolation plate 518, and the second air inlet 519. A first temperature and humidity sensor 506 and a second temperature and humidity sensor 507 monitor the air temperature and humidity at the bottom and top of the filter box 502, respectively. When the air humidity is high, the molecular sieve dehumidification filter element 521 comes into play, utilizing the molecular sieve's adsorption properties for water molecules to remove moisture from the air. The dehumidified and filtered air exits the filter box 502 through the outlet valve 508.

[0079] 3. Air Distribution and Circulation: Air exhausted from the filter box 502 returns to the incoming cabinet body 301 through the first pipe 501. The heat exchanger 509 regulates the air temperature, and the tee pipe 510 diverts the air flow, delivering it through the first blast pipe 511 and the second blast pipe 512, respectively, to the cavities within the first and second rotatable support frames 41, 42, formed by the moisture-proof cover 405, the rotating seal 412, and the conical top cover 413. This ensures air circulation within the distribution box, maintaining dryness and a suitable temperature.

[0080] 4. Circuit Component Installation and Support: Circuit components are mounted on the electrical mounting plate 421 of the first rotatable support frame 41 and the second rotatable support frame 42. The electrical mounting plate 421 is bolted to the first support frame positioning plate 417 and the second support frame positioning plate 424 via side panels, providing a stable mounting surface for the circuit components. The first and second support frame positioning plates 417 and 424 are secured to the incoming cabinet support plate 304 via the first and second support frame bases 416 and 423, ensuring the stability of the entire support structure. Furthermore, a sealing gasket 425 prevents dust and moisture from entering the circuit component mounting area.

[0081] 5. Wiring and Line Management: The bundled wires 430 begin at the bottom of base 1 and connect to the circuit breaker. Branch wires pass through first cable tray 426, cable rack 427, main cable conduit 428, and second cable tray 429, connecting to contactors, fuses, relays, and other circuit components on electrical mounting plate 421 through square cable entry grid 420 and square cable entry holes 422. First and second cable trays 426 and 429 organize and guide the wires, cable rack 427 further organizes and secures the wires, and main cable conduit 428 provides a protective channel for the wires, ensuring they are neatly arranged and free of tangles, ensuring stable power and signal transmission between circuit components.

[0082] 6. The air circulation and dehumidification component 5 runs continuously to keep the air inside the distribution box dry and at a suitable temperature and humidity, creating a good operating environment for the circuit components. The circuit component support component 4 firmly supports the circuit components and reasonably manages the wiring to ensure the normal operation of the circuit system. The incoming cabinet body 301, the incoming cabinet top cover 302, the incoming cabinet door 303 and the incoming cabinet support plate 304 in the incoming cabinet component 3 provide protection and structural support for the entire system. The base 1 carries all components, and the grounding lightning protection device 6 ensures the safety of the distribution box to prevent lightning strikes and static electricity hazards. At the same time, the heat generated by the circuit components during operation can be brought out of the distribution box through air circulation to maintain the thermal balance of the system. Through the close cooperation of various components, the entire equipment achieves multiple functions such as moisture-proof, stable power supply and safety protection.

[0083] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A distribution box housing with moisture-proof performance, comprising a base (1), characterized in that: The top of the base (1) is provided with an outlet and metering cabinet (2), the top of the base (1) is provided with an incoming cabinet assembly (3), the interior of the incoming cabinet assembly (3) is provided with a circuit device support assembly (4), the interior of the incoming cabinet assembly (3) is also provided with an air circulation and dehumidification assembly (5), and the bottom of the circuit device support assembly (4) is provided with a grounding lightning protection device (6); An incoming line cabinet assembly (3), the incoming line cabinet assembly (3) comprising an incoming line cabinet body (301), an incoming line cabinet top cover (302), an incoming line cabinet door (303) and an incoming line cabinet support plate (304), the incoming line cabinet body (301) being fixedly mounted on the top of the base (1), the incoming line cabinet top cover (302) being fixedly mounted on the top of the incoming line cabinet body (301), the incoming line cabinet door (303) being movably mounted on one side of the incoming line cabinet top cover (302), and the incoming line cabinet support plate (304) being fixedly mounted inside the incoming line cabinet body (301); A circuit device support assembly (4), the circuit device support assembly (4) comprising a first rotatable support frame (41) and a second rotatable support frame (42), the first rotatable support frame (41) and the second rotatable support frame (42) being symmetrically arranged, the first rotatable support frame (41) and the second rotatable support frame (42) both comprising a first support frame base (416), a first support frame positioning plate (417), an internal threaded hole (418), a wire outlet hole (419), a square wire inlet grid (420), an electrical installation plate (421), a wire inlet square hole (422), a second support frame base (423), a second support frame positioning plate (424) and a sealing pad (425), the first support frame base (416) being arranged on the top of the wire inlet cabinet support plate (304), the first support frame positioning plate (417) being fixedly mounted on the top of the first support frame base (416), a first support frame positioning plate (417) being fixedly mounted on the top of the first support frame positioning plate (417), a first support frame positioning plate (417) being fixedly mounted on the top of the first support frame An internal threaded hole (418) is provided through the side of the first support frame base (416); a wire outlet hole (419) is provided through the top of the first support frame base (416); a square wire inlet grid (420) is fixedly installed on one side of the first support frame positioning plate (417); an electrical installation plate (421) is provided on one side of the square wire inlet grid (420); the electrical installation plate (421) is fixedly installed on one side of the first support frame positioning plate (417) by bolts; a wire inlet square hole (422) is provided through the position of the electrical installation plate (421) close to the square wire inlet grid (420); a second support frame positioning plate (424) is fixedly connected to one side of the first support frame positioning plate (417) by bolts; a sealing gasket (425) is fixedly connected to the side of the second support frame positioning plate (424) close to the first support frame positioning plate (417); and a second support frame base (423) is fixedly connected to the bottom of the second support frame positioning plate (424); An air circulation and dehumidification component (5) comprising a first pipe (501), a filter box (502), a second pipe (503), a circulation pump (504), a first temperature and humidity sensor (506), a second temperature and humidity sensor (507), an air outlet valve (508), a first isolation plate (516), a first air inlet (517), a second isolation plate (518), a second air inlet (519), a third air inlet (520), a molecular sieve dehumidification filter element (521), a packaging plate (522), and a direct The first pipe (501) is fixedly mounted on the top of the incoming line cabinet body (301), an electromagnetic opening and closing valve is provided inside the first pipe (501), the top of the first pipe (501) is connected to a filter box (502), the top of the filter box (502) is connected to a second pipe (503), the top of the second pipe (503) is connected to a circulation pump (504), the bottom of the filter box (502) is provided with a first temperature and humidity sensor (506 ... A second temperature and humidity sensor (507) is provided at the bottom of the filter box (502); an air outlet valve (508) is provided on one side of the filter box (502); a first isolation plate (516) is provided inside the filter box (502); a first air inlet (517) is provided through the side of the first isolation plate (516) close to the second temperature and humidity sensor (507); a second isolation plate (518) is provided at the bottom of the first isolation plate (516); a second air inlet (519) is provided on the side of the second isolation plate (518) close to the air outlet valve (508); ), a third air inlet (520) is provided at the connection between the filter box (502) and the first pipe (501), a packaging plate (522) is fixedly installed on the side of the filter box (502) close to the first pipe (501) by bolts, a linear sealing plate (523) is fixedly connected to the side of the packaging plate (522) close to the filter box (502), a molecular sieve dehumidification filter element (521) is provided on one side of the linear sealing plate (523), and the molecular sieve dehumidification filter element (521) is movably installed inside the filter box (502).

2. A distribution box housing with moisture-proof performance according to claim 1, characterized in that: the first rotatable support frame (41) and the second rotatable support frame (42) further include a turntable base (401), a C-shaped slide groove (402), a block (403), a turntable bearing seat (404), a moisture-proof cover (405), a first annular slide rail (406), a second annular slide rail (407), an arc-shaped sealing plate (408), a first limiting rod (409), a second limiting rod (410), a lock (411), a rotary seal (412), a conical top cover (413), an outlet pipe (414) and an air outlet (415), the turntable base (401) is fixedly installed on the top of the incoming cabinet support plate (304), the top of the turntable base (401) is provided with a C-shaped slide groove (402), a clamping block (403) is movably installed inside the C-shaped slide groove (402), the top of the clamping block (403) is fixedly connected to the turntable bearing seat (404), and the turntable bearing seat (404) is movably installed. The moisture-proof cover (405) is mounted on the top of the turntable base (401), and the moisture-proof cover (405) is movably sleeved on the top of the turntable bearing seat (404). The bottom of the moisture-proof cover (405) is fixedly sleeved with a first annular slide rail (406), and the top of the moisture-proof cover (405) is fixedly sleeved with a second annular slide rail (407). An arc-shaped sealing plate (408) is movably installed between the first annular slide rail (406) and the second annular slide rail (407). A first limiting rod (406) is provided on one side of the arc-shaped sealing plate (408). 09), a second limiting rod (410) is provided on the other side of the arc-shaped sealing plate (408), a lock (411) is provided on one side of the second limiting rod (410), the top of the moisture-proof cover (405) is movably sleeved with a rotating seal (412), the top of the rotating seal (412) is movably sleeved with a conical top cover (413), one side of the conical top cover (413) is connected to an outlet pipe (414), and an air outlet hole (415) is opened through the top of the conical top cover (413).

3. A distribution box shell with moisture-proof performance according to claim 1, characterized in that: the circuit device support assembly (4) also includes a first wire management tray (426), a wire management frame (427), a main supply wire pipe (428), a second wire management tray (429) and a bundled wire body (430), the first wire management tray (426) is fixedly installed inside the circular tube formed by the first support frame positioning plate (417) and the second support frame positioning plate (424), the top of the first wire management tray (426) is provided with a wire management frame (427), the top of the first wire management tray (426) is fixedly connected to the main supply wire pipe (428), the top of the main supply wire pipe (428) is fixedly connected to the second wire management tray (429), and the inside of the main supply wire pipe (428) is provided with a bundled wire body (430).

4. A distribution box shell with moisture-proof performance according to claim 1, characterized in that: the bottom of the first support frame base (416) and the second support frame base (423) are both provided with semicircular rings, and the semicircular rings together constitute a circular clamping ring, the inner diameter of the circular tube jointly formed by the first support frame positioning plate (417) and the second support frame positioning plate (424) is equal to the outer diameter of the circular clamping ring formed by the first support frame base (416) and the second support frame base (423), the first support frame base (416), the first support frame positioning plate (417), the second support frame base (423) and the second support frame positioning plate (424) together constitute a circular circuit device carrying platform through bolts, and any circuit device carrying platform can be longitudinally assembled with another circuit device carrying platform, and the bottom of the first support frame base (416) and the second support frame base (423) are both provided with lighting fixtures.

5. A distribution box shell with moisture-proof performance according to claim 3, characterized in that: the starting end of the bundled wire body (430) is set at the bottom of the base (1), and the starting end of the bundled wire body (430) is electrically connected to the circuit breaker, and the branch lines of the bundled wire body (430) pass through the wire management rack (427), the square wire entry grid (420) and the wire entry square hole (422) in sequence, and are electrically connected to circuit devices such as contactors, fuses and relays respectively, the second wire management tray (429) is fixedly installed on the top of the square wire entry grid (420), and the bundled wire body (430) is set through the inside of the main supply line pipe (428).

6. A distribution box housing with moisture-proof performance according to claim 1, characterized in that: the electrical installation board (421) includes a main board for fixing circuit components and side panels symmetrically arranged on the left and right sides, the side panels of the electrical installation board (421) are respectively installed on one side of the first support frame positioning plate (417) and the second support frame positioning plate (424) by bolts, the distance between the main board of the electrical installation board (421) and the square wire inlet grid (420) is equal to the diameter of the wire outlet hole (419), and the wire outlet hole (419) is symmetrically opened on the top of the first support frame base (416) and the second support frame base (423) with the square wire inlet grid (420) as the center.

7. A distribution box casing with moisture-proof performance according to claim 1, characterized in that: the air circulation and dehumidification component (5) also includes a heat exchanger (509), a three-way pipe (510), a first blast pipe (511) and a second blast pipe (512), the heat exchanger (509) is fixedly installed at the bottom of the incoming cabinet support plate (304), one side of the heat exchanger (509) is connected to the three-way pipe (510), one side of the three-way pipe (510) is connected to the first blast pipe (511) through a pipeline, and the other side of the three-way pipe (510) is connected to the second blast pipe (512) through a pipeline.

8. A distribution box housing with moisture-proof performance according to claim 1, characterized in that: the air circulation and dehumidification component (5) further includes an air intake duct (505), an annular rain shield (513), a dust cover body (514), a filter (515), a first air blocker (524), a first one-way valve (525), a second air blocker (526) and a second one-way valve (527), the air intake duct (505) is fixedly mounted on the top of the conical top cover (413), an annular rain shield (513) is provided on the top of the annular rain shield (513), a dust cover body (514) is provided on the top of the annular rain shield (513), a filter (515) is provided on one side of the dust cover body (514), the air intake duct (505) A first air blocking plate (524) and a second air blocking plate (526) are symmetrically arranged inside the first air blocking plate (524), a first one-way valve (525) is arranged on one side of the first air blocking plate (524), and a second one-way valve (527) is arranged on one side of the second air blocking plate (526). The second one-way valve (527) only allows air to escape from the intake pipe (505) through the conical top cover (413) inside the first rotatable support frame (41), and the first one-way valve (525) only allows air to escape from the intake pipe (505) through the conical top cover (413) inside the second rotatable support frame (42). The intake pipe (505) is composed of a horizontal double-way pipe and a longitudinal straight pipe, and the straight pipe is not connected to the double-way pipe. The straight pipe inside the intake pipe (505) is connected to the second pipe (503).

9. A distribution box casing with moisture-proof performance according to claim 8, characterized in that: the air intake pipe (505), the circulation pump (504), the second pipe (503), the filter box (502), the first pipe (501), the heat exchanger (509), the three-way pipe (510), the first blast pipe (511), the second blast pipe (512) and the conical top cover (413) together constitute an air circulation loop, wherein the air intake pipe (505) is the air intake end of the air circulation loop, and the holes opened on the left and right sides of the air intake pipe (505) are the air outlet ends of the air circulation loop.

10. A distribution box casing with moisture-proof performance according to claim 7, characterized in that: the first blast pipe (511) is connected to the cavity inside the first rotatable support frame (41) formed by the moisture-proof cover (405), the rotating seal (412) and the conical top cover (413), and the second blast pipe (512) is connected to the cavity inside the second rotatable support frame (42) formed by the moisture-proof cover (405), the rotating seal (412) and the conical top cover (413).

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