Metering box with centralized heat exhaust

Abstract

The present application relates to the technical field of metering box, in particular to a metering box with heat source centralized heat dissipation in the box; comprising a base and a cover plate on the inner side of the base; the base and the cover plate are both installed in the box body of the metering box; the box body of the metering box is provided with a ventilation hole in communication with the outside; the opening of the base faces the door of the metering box; the left and right widths of the cover plate are adapted to the left and right inner wall widths of the base; the inner side of the base and the inner side of the cover plate form a cavity; a heat dissipation component is installed on the inner wall of the base on the inner side of the cavity; the cover plate is L-shaped as a whole, and a gas permeation groove is arranged on the lower end; the vertical length of the cover plate is less than the vertical length of the base; the right edge of the cover plate is fixedly connected with a heat dissipation box; the opening of the heat dissipation box faces right; the present application forms an independent cavity by the base and the cover plate, and the core heat generating components such as electric energy meter and copper bar are centralized and covered, so that the heat sources are effectively gathered and the heat diffusion is avoided, and the heat in the cavity can be quickly discharged by the fan, so that the heat dissipation efficiency is significantly improved.

Description

Technical Field

[0001] This invention relates to the field of metering box technology, specifically a metering box with centralized heat dissipation from the internal heat source. Background Technology

[0002] Traditional metering boxes lack independent heat collection and isolation structures. The side walls of the box have multiple scattered gaps and ventilation holes to rely on natural convection for heat dissipation. When the metering box is working, more than 90% of the heat generated comes from the core electrical components such as the electricity meter, connectors, conductive copper busbars, and connecting wires. The heat will diffuse freely throughout the entire internal space of the box, causing the hot air to dilute and significantly reducing the heat exchange efficiency. The multiple openings in the box also create multiple water inlet channels. Rainwater and environmental condensation can easily seep into the box through various holes and come into direct contact with electrical components, posing a major safety hazard of short circuits and meter burnout.

[0003] Metering boxes on the market that use a separate bottom exhaust structure can only replace the air in the large space of the box. They cannot concentrate the core heat-generating components that generate most of the heat into a small heat exchange area. The exhaust airflow is difficult to accurately remove the heat from the concentrated heat source. In addition, the box is not equipped with an integrated water guiding and drainage structure. Once water vapor seeps into the box, it will accumulate everywhere and wet the electrical components. It cannot simultaneously meet the usage requirements of efficient centralized heat dissipation and reliable waterproof drainage. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies, this invention proposes a metering box with centralized heat dissipation for internal heat sources. The invention uses a base and cover plate to form an independent cavity, centrally enclosing core heat-generating components such as the electricity meter and copper busbars. This effectively concentrates the heat source and prevents heat dissipation and dilution. Combined with a fan, the heat in the cavity can be quickly dissipated, significantly improving heat dissipation efficiency. Simultaneously, a partition separates the air cavity and liquid cavity, allowing for the rapid removal of infiltrated rainwater and condensation, preventing short circuits caused by moisture. This effectively solves the technical defects of traditional metering boxes, such as poor heat dissipation, weak waterproofing, and the inability to simultaneously achieve both heat dissipation and waterproofing, ensuring the safe and stable operation of the metering box.

[0005] The technical solution adopted by this invention to solve its technical problem is as follows: A metering box with centralized heat dissipation from an internal heat source, comprising a base and a cover plate on the inner side of the base; both the base and the cover plate are installed inside the metering box; ventilation holes are provided connecting the inside and outside of the metering box; the opening of the base faces the door of the metering box; the left and right width of the cover plate is adapted to the left and right inner wall widths of the base; a cavity is formed between the inner side of the base and the inner side of the cover plate; heat dissipation components are installed inside the cavity and on the inner wall of the base; the cover plate is generally L-shaped, with a vent groove provided at the lower end; the vertical length of the cover plate is small. The base has a vertical length; a heat dissipation box is fixedly connected to the right edge of the cover plate; the heat dissipation box opens to the right; a partition is fixedly connected to the lower part of the heat dissipation box; a groove is formed between the right inner wall of the partition and the opening of the heat dissipation box; the partition divides the heat dissipation box into an air chamber and a liquid chamber; a mounting base fixedly connected to the bottom wall of the air chamber is connected to a fan placed inside; the fan is in lateral contact with a rib fixedly connected to the inner wall of the air chamber; a first air groove communicating with the cavity is provided through the air chamber facing upward; a flower-shaped second air groove and a strip-shaped drain groove are provided through the right side of the base; the second air groove communicates with the air chamber; the drain groove communicates with the liquid chamber.

[0006] Preferably, the heat dissipation component includes an electricity meter, a connector, wires, and a copper busbar; a U-shaped sealing strip is embedded in the open end face of the heat dissipation box; the opening of the sealing strip faces the first air groove; the lower inner wall of the liquid chamber is inclined outward; and micropores are dispersedly arranged on the cover plate.

[0007] Preferably, the upper end of the cover plate is fixedly connected to the rotating sleeve; the rotating rod inside the rotating sleeve is rotatably connected to the left and right inner walls of the base; a toothed groove is provided on the right side of the base; an active groove is provided through the toothed groove; the right end of the rotating rod extends into the toothed groove and is fixedly connected to the active gear; an active rack that meshes with the active gear is slidably connected in the active groove; the teeth of the active rack are located on the right side of the upper edge; the notch at the rear end of the active rack is connected to the bottom of the active groove by an active spring.

[0008] Preferably, the active rack has an adjustment groove facing forward; an adjustment bar is slidably connected in the adjustment groove; the adjustment groove extends to the left and is threadedly connected to an adjustment bolt; and the adjustment bar has multiple adjustment holes on its left outer wall.

[0009] Preferably, the active groove extends upwards and is threadedly connected to a locking bolt; the upper surface of the active rack is provided with a locking hole corresponding to the locking bolt.

[0010] Preferably, the base has a U-shaped pressing groove corresponding to the sealing strip on its right inner wall; a pressing strip is slidably connected in the pressing groove; the pressing strip is connected to the bottom of the pressing groove through a pressing spring; the pressing groove is connected to the driving groove through a driven groove; an auxiliary groove is provided on the inner wall of the driven groove; an auxiliary block is slidably connected in the auxiliary groove; the auxiliary block is connected to the inner wall of the auxiliary groove through an auxiliary spring; a driven strip is slidably connected in the driven groove; the driven strip is fixedly connected to the auxiliary block; the upper end of the driven strip is driven by the inclined surface of the driving rack, and the lower end is driven by the inclined surface of the pressing strip.

[0011] Preferably, the rotating sleeve and the rotating rod are rotatably connected by a first torsion spring.

[0012] Preferably, the cover plate is composed of an upper plate and a lower plate that are hinged to each other; the upper plate is fixedly connected to the rotating sleeve; the lower plate is fixedly connected to the heat dissipation box; and a limiting block extending to the outer side of the lower plate is fixedly connected to the lower outer surface of the upper plate.

[0013] Preferably, the heat dissipation box has a first groove facing forward; a first rack is slidably connected in the first groove; the first rack is connected to the bottom of the first groove by a first spring; a second groove is provided with the first groove wall facing upward; a second gear meshing with the first rack is rotatably connected in the second groove; a clearance groove is provided on the lower inner wall of the liquid cavity; a second toothed rod extending into the second groove is rotatably connected to the clearance groove on the right side; the second toothed rod is fixedly connected to the second gear; a flap is movably sealed to the inner wall of the liquid cavity; the flap is fixedly connected to the second toothed rod; an inclined guide surface is provided at the end of the first rack protruding from the first groove.

[0014] The beneficial effects of this invention are as follows: 1. This invention forms an independent cavity by enclosing the base and cover plate, which centrally covers the core heat-generating components such as the electricity meter and copper busbar. This effectively concentrates the heat source and prevents heat dissipation and dilution. With the help of a fan, the heat in the cavity can be quickly discharged, significantly improving the heat dissipation efficiency. At the same time, the partition separates the air cavity and the liquid cavity, which can quickly drain the seeping rainwater and condensation, eliminating the problem of short circuits caused by moisture in the components. This effectively solves the technical defects of traditional metering boxes, such as poor heat dissipation, weak waterproof performance, and the inability to balance heat dissipation and waterproofing, ensuring the safe and stable operation of the metering box.

[0015] 2. The present invention, through the cooperation of locking bolts and adjusting bolts, enables the cover plate to be selectively adjusted to follow the door's movement or normally closed state according to installation and usage requirements. This improves the ease of operation of the heat dissipation components inside the cover plate and broadens the applicability of the heat dissipation device.

[0016] 3. The present invention releases the pressure strip on the heat dissipation box before the sealing strip on the heat dissipation box is removed from the base, and after the heat dissipation box is flipped into the inside of the base with the cover plate, the pressure strip re-presses the sealing strip, thereby ensuring the sealing performance between the opening of the heat dissipation box and the base, while facilitating the flipping of the heat dissipation box with the cover plate, thus meeting the usage requirements. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a perspective view of Embodiment 1 of the present invention; Figure 2 yes Figure 1 Exploded view; Figure 3 yes Figure 1 3D view of the center cover and fan; Figure 4 yes Figure 1 A three-dimensional view of the middle cover plate; Figure 5 yes Figure 1 A sectional view; Figure 6 yes Figure 5 Enlarged view of point A in the middle; Figure 7 These are perspective views of embodiments 2-4 of this invention; Figure 8 yes Figure 7 Cross-sectional views of the driving and driven grooves; Figure 9 yes Figure 7 Cross-sectional view of the center-drain heat box; Figure 10 yes Figure 9 Enlarged view of point B in the middle; Figure 11 This is a perspective view of the active rack, the active gear, and the driven rack in this invention; Figure 12 yes Figure 11 Enlarged view of point C in the middle; Figure 13 yes Figure 7 3D view of the middle-row heat exchanger box; Figure 14 yes Figure 13 Enlarged view of point D in the middle; Figure 15 yes Figure 7 Cross-sectional views of the first and second slots in the middle; Figure 16 It is a three-dimensional diagram of the first rack and the second gear; Figure 17 yes Figure 7 A cross-sectional view of the central drive rack.

[0019] In the diagram: Base 1, Second air groove 11, Cavity 12, Drainage groove 13, Gear groove 14, Active groove 15, Locking bolt 16, Pressing groove 17, Driven groove 18, Auxiliary groove 19, Cover plate 2, Ventilation groove 21, Microhole 22, Rotating sleeve 23, Rotating rod 24, Active gear 25, First torsion spring 26, Upper plate 27, Lower plate 28, Limiting block 29, Heat dissipation box 3, Partition plate 31, Partition groove 32, Air cavity 33, Liquid cavity 34, Mounting base 35, Rib 36 First air groove 37, sealing strip 38, first groove 39, second groove 391, clearance groove 392, fan 4, active rack 5, notch 51, active spring 52, adjusting groove 53, adjusting strip 54, adjusting bolt 55, adjusting hole 56, locking hole 57, pressing strip 6, pressing tension spring 61, driven strip 7, auxiliary block 71, auxiliary tension spring 72, first rack 8, first spring 81, second gear 82, second gear 83, flap 84, guide surface 85. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0021] like Figures 1 to 17 As shown, the present invention includes the following embodiments: Example 1 ( Figures 1-6 A metering box with centralized heat dissipation from an internal heat source includes a base 1 and a cover plate 2 on the inner side of the base 1. Both the base 1 and the cover plate 2 are installed inside the metering box body (not shown in the figure). The metering box body has ventilation holes (not shown in the figure) connecting its interior and exterior. The opening of the base 1 faces the door of the metering box (not shown in the figure). The left and right widths of the cover plate 2 are adapted to the left and right inner wall widths of the base 1. A cavity 12 is formed between the inner side of the base 1 and the inner side of the cover plate 2. Heat dissipation components (not shown in the figure) are installed inside the cavity 12 and on the inner wall of the base 1. The cover plate 2 is generally L-shaped, with a vent groove 21 at its lower end. The vertical length of the cover plate 2 is less than the vertical length of the base 1. The right edge of the cover plate 2 is fixedly connected to… The heat dissipation box 3 has an opening facing right. A partition 31 is fixedly connected to the lower part of the heat dissipation box 3. A groove 32 is formed between the right inner wall of the partition 31 and the opening of the heat dissipation box 3. The partition 31 divides the heat dissipation box 3 into an air chamber 33 and a liquid chamber 34. A mounting base 35 fixedly connected to the bottom wall of the air chamber 33 is connected to a fan 4 placed inside by a first bolt (not shown in the figure). The fan 4 is in lateral contact with a rib 36 fixedly connected to the inner wall of the air chamber 33. A first air groove 37 communicating with the cavity 12 is provided through the air chamber 33 at an upward angle. A flower-shaped second air groove 11 and a strip-shaped drain groove 13 are provided through the right side of the base 1. The second air groove 11 communicates with the air chamber 33. The drain groove 13 communicates with the liquid chamber 34.

[0022] In this embodiment, the heat dissipation component includes an electricity meter, a connector, a wire, and a copper busbar; a U-shaped sealing strip 38 is embedded in the open end face of the heat dissipation box 3; the opening of the sealing strip 38 faces the first air groove 37; the liquid chamber 34 is inclined outward on the lower inner wall; and micropores 22 are dispersed on the cover plate 2.

[0023] The base 1 can be bolted to the right inner wall of the metering box, or the base 1 can be directly integrated into the right inner wall of the metering box. During the installation of electronic components in the metering box, the energy meter, connectors, wires, and copper busbars are installed on the inner wall of the base 1. The energy meter, connectors, wires, and copper busbars are the main heat sources during the operation of the metering box. Installing the heat dissipation component on the inner wall of the base 1 concentrates the heat at the edges. After the complete heat dissipation component and other electronic components are installed, the cover plate 2 is closed on the opening of the base 1, forming a cavity 12 between the inner side of the cover plate 2 and the inner wall of the base 1. During the use of the metering box, the heat dissipation component will generate heat, which will be concentrated in the cavity 12. When the temperature is monitored by the temperature sensor and exceeds the threshold, the fan 4 will work, and the fan 4 will dissipate the heat. The heat inside cavity 33 is discharged to the outside of the box along the second air groove 11. The air cavity 12 will let the heat flow into the air cavity 33 through the first air groove 37. The gas in other parts of the metering box enters the air cavity 12 along the micropores 22 and the venting groove 21. The outside gas will enter the metering box through the ventilation hole, thus quickly dissipating the heat inside cavity 12. After the temperature inside cavity 12 drops, the fan 4 will stop working, so that the ventilation hole, micropores 22, venting groove 21, first air groove 37, air cavity 33 and second air groove 11 can be naturally ventilated. The water entering from the second air groove 11 will enter the liquid cavity 34 along the inner wall of the air cavity 33 and the partition groove 32 due to gravity. Finally, it will be discharged to the outside of the box along the lower inclined inner wall of the liquid cavity 34 and the drain groove 13. The sealing strip 38 plays the role of sealing the heat dissipation box 3 and the inner wall of the base 1. This invention forms an independent cavity 12 by enclosing the base 1 and the cover plate 2, which centrally covers the core heat-generating components such as the electricity meter and copper busbar, effectively concentrating the heat source and preventing heat dissipation and dilution. With the help of the fan 4, the heat in the cavity 12 can be quickly discharged, significantly improving the heat dissipation efficiency. At the same time, the partition 31 separates the air cavity 33 and the liquid cavity 34, which can quickly discharge the seeping rainwater and condensation, eliminating the problem of short circuits caused by moisture in the components. This invention effectively solves the technical defects of traditional metering boxes, such as poor heat dissipation, weak waterproof performance, and the inability to balance heat dissipation and waterproofing, ensuring the safe and stable operation of the metering box.

[0024] Example 2 ( Figures 7-17The cover plate 2 is fixedly connected to the upper end of the rotating sleeve 23; the rotating rod 24 inside the rotating sleeve 23 is rotatably connected to the left and right inner walls of the base 1; a toothed groove 14 is provided inside the base 1 at the right position; an active groove 15 is provided through the toothed groove 14; the right end of the rotating rod 24 extends into the toothed groove 14 and is fixedly connected to the active gear 25; an active rack 5 that meshes with the active gear 25 is slidably connected in the active groove 15; the teeth of the active rack 5 are located at the upper right position; the notch 51 at the rear end of the active rack 5 is connected to the bottom of the active groove 15 by an active spring 52.

[0025] In this embodiment, the active rack 5 is provided with an adjustment groove 53 facing forward; an adjustment bar 54 is slidably connected in the adjustment groove 53; the adjustment groove 53 passes through to the left and is threadedly connected to an adjustment bolt 55; the adjustment bar 54 is provided with multiple adjustment holes 56 on its left outer wall.

[0026] In this embodiment, the active groove 15 extends upward and is threadedly connected to the locking bolt 16; the upper surface of the active rack 5 is provided with a locking hole 57 corresponding to the locking bolt 16.

[0027] Before closing the metering box door, the cover plate 2 can be either normally closed or move with the opening and closing of the box door. In the normally closed state, first loosen the adjusting bolt 55 and move it out of the adjusting hole 56. Press the adjusting bar 54 along the adjusting groove 53 and move it close to the bottom of the groove. Tighten the adjusting bolt 55 to minimize the overall active length of the active rack 5 and the adjusting bar 54, so that the box door cannot contact the adjusting bar 54. Pressing the active rack 5 in this way overcomes the active spring 52 and moves it close to the bottom of the active groove 15. The active rack 5 will drive the teeth to mesh with the active gear 25, thereby causing the active gear 25 to rotate. During the rotation of the active gear 25, the rotating rod 24 will rotate. During the rotation of the rotating rod 24, the rotating sleeve 23 will rotate. During the rotation of the rotating sleeve 23, the cover plate 2 will flip towards the inside of the base 1, thereby causing the cover plate 2 to flip into the inside of the base 1, realizing the cover plate 2 After covering the heat dissipation components, tighten the locking bolt 16 so that it is inserted into the locking hole 57 on the upper surface of the active rack 5, thereby locking the active rack 5. This locks the cover plate 2 inside the base 1. During the opening or closing of the cabinet door, the cover plate 2 is normally closed. The cover plate 2 can be made transparent so that the operator can read and observe the heat dissipation components, such as the energy meter, inside the cover plate 2 to meet the usage requirements. When it is necessary to open the cover plate 2, simply loosen the locking bolt 16 so that it moves out of the locking hole 57, allowing the active rack 5 to unlock in the active groove 15. The active spring 52 will push the active rack 5 forward along the active groove 15. The active rack 5 will drive the active gear 25 and the rotating rod 24 to rotate, causing the rotating sleeve 23 to rotate and the cover plate 2 to flip outward, opening the heat dissipation components inside the cavity 12. When the cover plate 2 moves in sync with the opening and closing of the cabinet door, simply control the locking bolt 16 to disengage from the active rack 5 and loosen the adjusting bolt 55 away from the adjusting strip 54. Control the adjusting strip 54 to slide along the adjusting groove 53 in the front-to-back direction, thereby adjusting the active length of the active rack 5 and the adjusting strip 54. This ensures the active length is adapted to the cabinet depth, allowing the adjusting strip 54 to be compressed by the cabinet door. Then, tighten the adjusting bolt 55, which will insert into the corresponding adjusting hole 56 on the adjusting strip 54, locking the adjusting strip 54 in the adjusting groove 53. The active length is locked. Finally, close the cabinet door. During the closing process, the inner wall of the cabinet door will compress the adjusting strip 54, adjusting... When the section bar 54 is pressed, it will cause the active rack 5 to slide along the active groove 15. The active rack 5 will drive the meshing active gear 25 to rotate. The active gear 25 will drive the rotating bar 24 and the rotating sleeve 23 to rotate, causing the cover plate 2 to flip towards the inside of the base 1. After the cover plate 2 is closed, it forms a cavity 12 with the base 1 to collect heat. When the box door is open, the box door will release the pressure on the adjustment bar 54. The active spring 52 will push the active rack 5 to move outward along the active groove 15. During the outward movement of the active rack 5, the active gear 25 will mesh and drive, causing the cover plate 2 to flip outward around the rotating bar 24, allowing the operator to directly inspect and operate the heat dissipation components such as the energy meter. The present invention, through the cooperation of locking bolt 16 and adjusting bolt 55, enables the cover plate 2 to be selectively adjusted to follow the door and normally closed state according to the installation and use requirements, thereby improving the ease of operation of the heat dissipation components inside the cover plate 2 and making the heat dissipation device more widely applicable.

[0028] Example 3 ( Figures 7-17 The base 1 has a U-shaped pressing groove 17 corresponding to the sealing strip 38 on its right inner wall; a pressing strip 6 is slidably connected in the pressing groove 17; the pressing strip 6 is connected to the bottom of the pressing groove 17 through a pressing tension spring 61; the pressing groove 17 is connected to the driving groove 15 through a driven groove 18; an auxiliary groove 19 is provided on the inner wall of the driven groove 18; an auxiliary block 71 is slidably connected in the auxiliary groove 19; the auxiliary block 71 is connected to the inner wall of the auxiliary groove 19 through an auxiliary tension spring 72; a driven strip 7 is slidably connected in the driven groove 18; the driven strip 7 is fixedly connected to the auxiliary block 71; the upper end of the driven strip 7 is driven by the inclined surface of the driving rack 5, and the lower end is driven by the inclined surface of the pressing strip 6.

[0029] In this embodiment, the rotating sleeve 23 and the rotating rod 24 are rotatably connected by a first torsion spring 26.

[0030] As the active rack 5 moves backward under pressure, it drives the active gear 25 to rotate. The active gear 25 then drives the rotating rod 24 to rotate. The rotating rod 24, through the first torsion spring 26, drives the rotating sleeve 23 to rotate. The rotating sleeve 23 causes the cover plate 2 to flip and close onto the inside of the base 1. After the cover plate 2 is in place, as the active rack 5 continues to move backward, it drives the active gear 25 to rotate continuously, causing the rotating rod 24 and the cover plate 2 to rotate against the torque of the first torsion spring 26. During the backward movement of the active rack 5, it compresses the driven bar 7 downward through the inclined plane transmission. During the downward movement of the driven bar 7, it drives the auxiliary block 71 to slide along the auxiliary groove 19 and pulls the auxiliary tension spring 72 to move. During the downward movement of the driven bar 7, it compresses the pressing bar 6, overcoming the pressing tension spring 61, and moves it along the pressing groove 19. 7. When the pressure bar 6 moves to the left, it will press the aligned sealing bar 38, achieving further sealing between the sealing bar 38 and the inner wall of the base 1. During the forward movement of the active rack 5, the active rack 5 will gradually disengage from the driven bar 7. After the driven bar 7 releases the inclined transmission compression at the upper end, the auxiliary tension spring 72 pulls the auxiliary block 71 to move upward in the auxiliary groove 19. The driven bar 7 moves upward, and the pressure tension spring 61 pulls the pressure bar 6 to move to the right along the pressure groove 17 to reset, so that the pressure bar 6 moves away from the sealing bar 38, leaving a gap in the sealing bar 38 on the inner side of the base 1, which facilitates the heat dissipation box 3 to move out of the inner side of the base 1 along with the cover plate 2. Then, during the forward movement of the active rack 5, it will drive the active gear 25, the rotating bar 24 and the rotating sleeve 23 to rotate, so that the cover plate 2 flips and moves out of the inner side of the base 1. In this embodiment, the clamping strip 6 releases the pressure on the sealing strip 38 on the heat dissipation box 3 before it moves out of the base 1, and after the heat dissipation box 3 flips into the inside of the base 1 along with the cover plate 2, the clamping strip 6 re-presses the sealing strip 38, thereby ensuring the sealing performance between the opening of the heat dissipation box 3 and the base 1, while facilitating the flipping of the heat dissipation box 3 with the cover plate 2, thus meeting the usage requirements.

[0031] Example 4 ( Figures 7-17 The cover plate 2 is composed of an upper plate 27 and a lower plate 28 that are hinged to each other; the upper plate 27 is fixedly connected to the rotating sleeve 23; the lower plate 28 is fixedly connected to the heat dissipation box 3; a limiting block 29 extending to the outside of the lower plate 28 is fixedly connected to the lower outer surface of the upper plate 27.

[0032] In this embodiment, the heat dissipation box 3 has a first groove 39 facing forward; a first rack 8 is slidably connected in the first groove 39; the first rack 8 is connected to the bottom of the first groove 39 by a first spring 81; a second groove 391 is provided with the first groove 39 wall facing upward; a second gear 82 that meshes with the first rack 8 is rotatably connected in the second groove 391; a clearance groove 392 is provided on the lower inner wall of the liquid cavity 34; a second toothed bar 83 extending into the second groove 391 is rotatably connected to the right side of the clearance groove 392; the second toothed bar 83 is fixedly connected to the second gear 82; a flap 84 is movably and sealingly connected to the inner wall of the liquid cavity 34; the flap 84 is fixedly connected to the second toothed bar 83; an inclined guide surface 85 is provided on the end of the first rack 8 protruding from the first groove 39.

[0033] During the forward movement of the active rack 5, the rotating sleeve 23 will rotate. The rotation of the rotating sleeve 23 will cause the upper plate 27 to flip around the rotating rod 24 and move out of the base 1. The upper plate 27 will then cause the rotatably connected lower plate 28 to move out of the inner side of the base 1. The lower plate 28 remains vertical, and the cover plate 2 will fold and flip to avoid interference with the door. After the lower plate 28 moves the heat dissipation box 3 out of the inner side of the base 1, the first spring 81 will push the first rack 8 to move to the right along the first groove 39. The first rack 8 will then cause the meshing second gear 82 to rotate, and the second gear 82 will cause the second gear 83 to rotate, causing the flap 84 inside the liquid cavity 34 to flip downwards. This makes the lower inner wall of the liquid cavity 34 lower on the left and higher on the right, thus retaining the residual liquid in the liquid cavity 34. To prevent overflow; during the backward movement of the active rack 5, the rotating sleeve 23 will drive the upper plate 27 to rotate and reset, and the upper plate 27 will drive the lower plate 28 to cooperate with the limiting block 29, so that the lower plate 28 enters the inner side of the base 1. The lower plate 28 will drive the heat dissipation box 3 to enter the inner side of the base 1. The guide surface 85 of the first rack 8 protruding from the port of the heat dissipation box 3 will be pressed down, so that the first rack 8 will overcome the first spring 81 and retract into the first groove 39. The first rack 8 drives the meshing second gear 82 to rotate, so that the rotating rod 24 drives the flip plate 84 to flip downward, so that the lower inner wall of the liquid cavity 34 is higher on the left and lower on the right, so that the liquid in the liquid cavity 34 can be smoothly discharged from the drain trough 13; in this embodiment, the left inner wall of the liquid cavity 34 is arc-shaped and in active sealing contact with the flip plate 84.

[0034] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the appendix. Figure 7The orientations or positional relationships shown are for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of the present invention. In addition, the terms "first," "second," "third," etc. are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of the present invention, "fixed connection" refers to a fixed connection. In the description of the present invention, "sliding connection" refers to a connection where the two parts can only slide and cannot be separated. Specifically, the groove can be set to be concave and the block can be set to be convex, and the specific design can be adjusted according to the actual situation. "Sliding fit" refers to a connection where the two parts can slide and separate. In the description of the present invention, "rotational connection" refers to a connection where the two parts can only rotate and cannot produce axial displacement. Specifically, an annular groove can be provided on the inner wall of the hole, and a ring that is rotatably connected to the groove can be fixed to the outer wall of the shaft.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A metering box with centralized heat dissipation from an internal heat source, characterized in that: The device includes a base and a cover plate inside the base; both the base and the cover plate are installed inside the metering box; the metering box has ventilation holes connecting its interior and exterior; the opening of the base faces the door of the metering box; the left and right widths of the cover plate are adapted to the left and right inner wall widths of the base; the inner sides of the base and the inner sides of the cover plate form a cavity; heat dissipation components are installed inside the cavity and on the inner wall of the base; the cover plate is generally L-shaped, with a vent groove at its lower end; the vertical length of the cover plate is less than the vertical length of the base; a heat dissipation box is fixedly connected to the right edge of the cover plate. The heat dissipation box has an opening facing right; a partition is fixedly connected to the lower part of the heat dissipation box; a groove is formed between the right inner wall of the partition and the opening of the heat dissipation box; the partition divides the heat dissipation box into an air chamber and a liquid chamber; a mounting base fixedly connected to the bottom wall of the air chamber is connected to a fan placed inside; the fan is in lateral contact with a rib fixedly connected to the inner wall of the air chamber; a first air groove communicating with the cavity is provided through the air chamber facing upward; a flower-shaped second air groove and a strip-shaped drain groove are provided through the right side of the base; the second air groove communicates with the air chamber; the drain groove communicates with the liquid chamber.

2. The metering box with centralized heat dissipation from the internal heat source according to claim 1, characterized in that: The heat dissipation component includes an electricity meter, a connector, wires, and a copper busbar; a U-shaped sealing strip is embedded in the open end face of the heat dissipation box; the opening of the sealing strip faces the first air groove; the lower inner wall of the liquid chamber is inclined outward; and micropores are distributed on the cover plate.

3. A metering box with centralized heat dissipation from an internal heat source according to claim 2, characterized in that: The cover plate is fixedly connected to a rotating sleeve at its upper end; the rotating rod inside the rotating sleeve is rotatably connected to the left and right inner walls of the base; a toothed groove is provided at the right position inside the base; an active groove is provided through the toothed groove facing forward; the right end of the rotating rod extends into the toothed groove and is fixedly connected to the active gear; an active rack that meshes with the active gear is slidably connected in the active groove; the teeth of the active rack are located at the right position of the upper edge; the notch at the rear end of the active rack is connected to the bottom of the active groove by an active spring.

4. A metering box with centralized heat dissipation from the internal heat source as described in claim 3, characterized in that: The active rack has an adjustment groove facing forward; an adjustment bar is slidably connected in the adjustment groove; the adjustment groove extends to the left and is threadedly connected to an adjustment bolt; the adjustment bar has multiple adjustment holes on its left outer wall.

5. A metering box with centralized heat dissipation from the internal heat source according to claim 4, characterized in that: The active slot extends upwards and is threadedly connected to a locking bolt; the upper surface of the active rack is provided with a locking hole corresponding to the locking bolt.

6. A metering box with centralized heat dissipation from the internal heat source according to claim 3, characterized in that: The base has a U-shaped pressing groove on its right inner wall, corresponding to the sealing strip; a pressing strip is slidably connected in the pressing groove; the pressing strip is connected to the bottom of the pressing groove via a pressing spring; the pressing groove is connected to the driving groove via a driven groove; an auxiliary groove is provided on the inner wall of the driven groove; an auxiliary block is slidably connected in the auxiliary groove; the auxiliary block is connected to the inner wall of the auxiliary groove via an auxiliary spring; a driven strip is slidably connected in the driven groove; the driven strip is fixedly connected to the auxiliary block; the upper end of the driven strip is driven by the inclined surface of the driving rack, and the lower end is driven by the inclined surface of the pressing strip.

7. A metering box with centralized heat dissipation from the internal heat source according to claim 6, characterized in that: The rotating sleeve and the rotating rod are rotatably connected by a first torsion spring.

8. A metering box with centralized heat dissipation from the internal heat source according to claim 3, characterized in that: The cover plate is composed of an upper plate and a lower plate that are hinged to each other; the upper plate is fixedly connected to the rotating sleeve; the lower plate is fixedly connected to the heat dissipation box; and a limiting block extending to the outer side of the lower plate is fixedly connected to the lower outer surface of the upper plate.

9. A metering box with centralized heat dissipation from the internal heat source according to claim 3, characterized in that: The heat dissipation box has a first groove facing forward; a first rack is slidably connected in the first groove; the first rack is connected to the bottom of the first groove by a first spring; a second groove is provided on the upper side of the first groove; a second gear is rotatably connected in the second groove and meshes with the first rack; a clearance groove is provided on the lower inner wall of the liquid cavity; a second toothed bar extending into the second groove is rotatably connected to the right side of the clearance groove; the second toothed bar is fixedly connected to the second gear; a flap is movably sealed to the inner wall of the liquid cavity; the flap is fixedly connected to the second toothed bar; an inclined guide surface is provided on the end of the first rack protruding from the first groove.

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