Distribution automation communication terminal box

Abstract

The invention relates to the technical field of terminal boxes, and discloses a power distribution automation communication terminal box which comprises a box body, a first partition plate is fixedly connected to the upper side in the box body, a second partition plate is fixedly connected to the middle of the upper end of the first partition plate, the second partition plate divides the box body above the first partition plate into a dehumidification cavity and a mounting cavity, and the mounting cavity is located on the left side of the dehumidification cavity. A third partition plate is fixedly connected to the lower side in the box body, a box door is hinged to the front end of the box body, an air inlet is formed in the right end face of the box body and penetrates into the dehumidification cavity, a humidity sensor is fixedly connected into the air inlet, and an air outlet is formed in the left end face of the box body. Through a two-stage dehumidification structure of condensation dehumidification and secondary adsorption of a drying agent, wet air entering the box body is firstly condensed in the dehumidification cavity to separate out most moisture, and then is deeply dried through the removable silica gel box, so that a long-term maintenance-free low-humidity environment is realized, and the hidden danger of condensation on the surfaces of a fiber splice tray and a terminal strip is thoroughly eliminated.

Description

Technical Field

[0001] This invention relates to the field of terminal box technology, and in particular to a power distribution automation communication terminal box. Background Technology

[0002] The automated control of power distribution lines is an important part of modern power distribution systems. Currently, the communication method used in the automated control of power distribution lines is mostly fiber optic private network communication. The use of fiber optic private network communication requires fiber optic communication equipment such as fiber optic cable splicing reels and multi-port optical network units to output electrical signals to the power distribution automation terminal.

[0003] Existing outdoor terminal boxes generally adopt a heat dissipation solution of "rainproof shell + natural ventilation" or "rainproof shell + forced ventilation", and are equipped with sealing strips at the door to block rainwater. Some products further place disposable silica gel desiccant packets at the bottom of the box to absorb residual moisture.

[0004] However, while the above structure can effectively reduce the temperature inside the chamber on sunny days, in high humidity seasons or areas with large temperature differences between day and night, humid air from the outside is still drawn into the chamber with the airflow and condenses on the surface of the fiber optic tray and power module after cooling. The silica gel cannot be regenerated after it becomes saturated with moisture, and maintenance personnel need to open the chamber regularly to replace it, which increases the workload and damages the cleanliness inside the chamber. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a power distribution automation communication terminal box to solve the problems mentioned in the background art.

[0006] This invention provides a power distribution automation communication terminal box, comprising a box body, a first partition fixedly connected to the upper side of the box body, a second partition fixedly connected to the middle of the upper part of the first partition, the second partition dividing the box body above the first partition into a dehumidification chamber and an installation chamber, the installation chamber being located to the left of the dehumidification chamber, the bottom of the dehumidification chamber being inclined downwards from front to back, a third partition fixedly connected to the lower side of the box body, a door hinged to the front end of the box body, an air inlet opening on the right end face of the box body, the air inlet penetrating into the dehumidification chamber, a humidity sensor fixedly connected inside the air inlet, and an air outlet opening on the left end face of the box body, the air outlet penetrating into the installation chamber; further comprising: A dehumidification mechanism is installed inside the dehumidification chamber and is used to remove most of the water molecules in the air. Trachea; the trachea is installed inside the first partition, the upper end of the trachea extends to the right end of the second partition, the lower end of the trachea extends to the lower end of the third partition, and fins are fixedly connected to the side wall of the trachea at equal intervals. A drying mechanism, installed inside the housing below the third partition, filters out residual water molecules in the air; An air intake mechanism is installed on the front side of the drying mechanism; An air outlet mechanism is installed inside the mounting cavity; A drainage mechanism is installed inside the housing and is used to drain water from the dehumidification chamber.

[0007] Preferably, the box body is fixedly connected with mounting brackets at equal intervals, and the front end face of the mounting brackets is provided with positioning holes at equal intervals. The mounting brackets are located in front of the air pipe.

[0008] Preferably, the dehumidification mechanism includes a condenser tube, which is fixedly connected inside the dehumidification chamber. The condenser tube is configured in an "S" shape. A compressor is fixedly connected to the housing. The air inlet of the compressor is fixedly connected to one end of the condenser tube. A copper tube is fixedly connected to the air outlet of the compressor. The inner diameter of the copper tube is smaller than that of the condenser tube. The end of the copper tube is fixedly connected to the other end of the condenser tube.

[0009] Preferably, a rainproof top is fixedly connected to the upper end of the box, and the rainproof top is used to prevent rainwater from eroding the box.

[0010] Preferably, the drying mechanism includes a pair of placement boxes, each with an insertion interface at both ends of the box body. The placement boxes are slidably connected inside the insertion interfaces. Opposite ends of the pair of placement boxes abut against each other with abutment blocks. The upper and lower ends of the abutment blocks are respectively fixedly connected to the lower end of the third partition and the inner wall of the box body. A backing plate is fixedly connected to the end of each placement box. A fixing ear is fixedly connected to the side wall of the backing plate. The fixing ear is fixedly connected to the outer wall of the box body by bolts. Silica gel desiccant is placed inside the placement boxes.

[0011] Preferably, the air intake mechanism includes four air cylinders, which are fixedly connected inside the third partition and extend to the lower end of the third partition. A protective net is fixedly connected inside the upper end of each air cylinder, and an installation sleeve is fixedly connected to the inner wall of each air cylinder. A rotating shaft is rotatably connected inside the installation sleeve, and a first fan blade is fixedly connected to the upper end of the rotating shaft. The air intake mechanism also includes a transmission rod, which is rotatably connected to the bottom of the housing through a bearing seat. Four first bevel gears are fixedly connected to the side wall of the transmission rod, and each of the first bevel gears is meshed with a second bevel gear. The upper ends of the second bevel gears are fixedly connected to the lower ends of the corresponding rotating shafts. A first motor is fixedly connected to the bottom of the housing, and the output shaft end of the first motor is fixedly connected to the right end of the transmission rod.

[0012] Preferably, the air outlet mechanism includes a second motor, a through hole is opened on the upper left side of the first partition, the second motor is fixedly connected above the first partition by a fixing bracket, and a second fan blade is fixedly connected to the output shaft end of the second motor, the second fan blade being located inside the through hole.

[0013] Preferably, the drainage mechanism includes a drainage box, which is fixedly connected to the rear end of the box body. A conduit is fixedly connected to the upper end of the drainage box, the upper end of the conduit passing through a first partition, and the lower end of the conduit located below the inside of the drainage box. A drain pipe is fixedly connected to the lower end of the drainage box, the lower end of the drain pipe passing through to the outside of the box body, and the upper end of the drain pipe located above the inside of the drainage box body.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention employs a two-stage dehumidification architecture of "condensation dehumidification + secondary adsorption of desiccant," which allows the humid air entering the chamber to first have most of its moisture condensed and extracted in the dehumidification chamber, and then undergoes deep drying through a replaceable silicone box, achieving a long-term maintenance-free low-humidity environment and completely eliminating the risk of condensation on the surface of the fiber fusion tray and terminal block.

[0015] 2. By setting the bottom of the dehumidification chamber as a backward-sloping slope and configuring a conduit extending into the drain box, the condensate can automatically flow into the closed drain box along the slope and be continuously discharged, avoiding water accumulation or secondary evaporation inside the box, and ensuring that the optical devices are always in a "dry + clean" operating space.

[0016] 3. This invention utilizes finned air ducts to directly guide dehumidified dry and cold air to the area below the third partition, forming a "bottom-in, top-out" directional air duct with the air intake mechanism. This not only provides efficient cooling for the heating elements but also prevents the backflow of external humid air, achieving synergistic optimization of heat dissipation and dehumidification, and significantly extending the service life of fiber optic communication equipment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall main structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the housing of the present invention; Figure 3 This is a schematic diagram of the overall front view cross-sectional structure of the present invention; Figure 4 This is a schematic diagram of the main cross-sectional structure of the air intake mechanism of the present invention; Figure 5 This is a schematic diagram of the exploded structure of the placement box and the enclosure of the present invention; Figure 6 This is a schematic diagram of the main cross-sectional structure of the housing from another perspective. Figure 7 This is a schematic diagram of the right-side cross-sectional structure of the housing of the present invention.

[0018] Numbering on the map: 1. Cabinet; 11. Cabinet door; 12. First partition; 131. Through hole; 13. Second partition; 131. Dehumidification chamber; 132. Mounting chamber; 14. Third partition; 15. Mounting bracket; 16. Air inlet; 161. Humidity sensor; 17. Air outlet; 18. Plug-in interface; 2. Dehumidification mechanism; 21. Compressor; 22. Condenser pipe; 3. Air pipe; 31. Fins; 4. Drying mechanism; 41. Placement box; 42. Support 43. Plate; 44. Fixing ear; 5. Abutment block; 5. Air intake mechanism; 51. Air cylinder; 52. Protective net; 53. Mounting sleeve; 54. Rotating shaft; 55. First fan blade; 56. Transmission rod; 57. First motor; 58. First bevel gear; 59. Second bevel gear; 6. Air outlet mechanism; 61. Second motor; 62. Second fan blade; 7. Drainage mechanism; 71. Drainage box; 72. Conduit; 73. Drainage pipe; 8. Rainproof top. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] like Figure 1-7 As shown, the present invention has the following three specific embodiments.

[0021] Example 1

[0022] A power distribution automation communication terminal box includes a box body 1. A first partition 12 is fixedly connected to the upper side of the interior of the box body 1. A second partition 13 is fixedly connected to the middle of the upper end of the first partition 12. The second partition 13 divides the box body 1 above the first partition 12 into a dehumidification chamber 131 and a mounting chamber 132. The mounting chamber 132 is located to the left of the dehumidification chamber 131. The bottom of the dehumidification chamber 131 is inclined downward from front to back. A third partition 14 is fixedly connected to the lower side of the interior of the box body 1. A door 11 is hinged to the front end of the box body 1. An air inlet 16 is opened on the right end face of the box body 1, extending into the interior of the dehumidification chamber 131. A humidity sensor 161 is fixedly connected inside the air inlet 16. An air outlet 17 is opened on the left end face of the box body 1, extending into the interior of the mounting chamber 132. The box body 1 also includes: Dehumidification mechanism 2 is installed inside the dehumidification chamber 131. Dehumidification mechanism 2 is used to remove most of the water molecules in the air. Air tube 3; Air tube 3 is installed inside the first partition 12. The upper end of air tube 3 extends to the right end of the second partition 13, and the lower end of air tube 3 extends to the lower end of the third partition 14. Fins 31 are fixedly connected at equal intervals to the side wall of air tube 3. Drying mechanism 4 is installed inside the box 1 below the third partition 14. Drying mechanism 4 filters out the remaining water molecules in the air. Air intake mechanism 5 is installed in front of drying mechanism 4; Air outlet mechanism 6 is installed inside the mounting cavity 132; Drainage mechanism 7 is installed inside the housing 1 and is used to drain the water inside the dehumidification chamber 131. Inside the housing 1, mounting brackets 15 are fixedly connected at equal intervals. Positioning holes are opened at equal intervals on the front face of the mounting brackets 15, and the mounting brackets 15 are located in front of the air pipe 3. A rainproof top 8 is fixedly connected to the upper end of the box 1. The rainproof top 8 is used to prevent rainwater from eroding the box 1.

[0023] In this embodiment, as Figures 1-3 As shown, outside air enters the dehumidification chamber 131 through the right air inlet 16, and the humidity is instantly detected by the humidity sensor 161 along the way. Then, the airflow passes over the dehumidification mechanism 2, where water molecules condense into droplets and flow along the bottom surface of the backward-sloping dehumidification chamber 131 into the drainage mechanism 7, completing the first dehydration. The dry and cold air, after most of the moisture has been removed, flows downward through the air pipe 3 in the first partition 12. The fins 31 on the outer wall of the air pipe 3 diffuse some of the cooling energy to the surrounding components, forming auxiliary cooling. After the air reaches below the third partition 14, it passes through the drying mechanism 4 and becomes a dry and low-temperature airflow. Under the continuous push of the air intake mechanism 5, the dry air passes through the third partition 14 from bottom to top, flows over the fiber optic tray and power module on the mounting bracket 15, carries away the heat, and enters the mounting chamber 132. Finally, it is extracted out of the chamber by the top air outlet mechanism 6, realizing a continuous cycle of "dehumidification-cooling-exhaust", so that the chamber always maintains a dry, clean, and slightly positive pressure operating environment.

[0024] Example 2

[0025] The difference from Embodiment 1 is that this embodiment discloses the specific structures of the dehumidification mechanism 2, the drying mechanism 4, and the drainage mechanism 7; The dehumidification mechanism 2 includes a condenser pipe 22, which is fixedly connected inside the dehumidification chamber 131. The condenser pipe 22 is set in an "S" shape. A compressor 21 is fixedly connected to the housing 1. The air inlet of the compressor 21 is fixedly connected to one end of the condenser pipe 22. A copper pipe is fixedly connected to the air outlet of the compressor 21. The inner diameter of the copper pipe is smaller than the inner diameter of the condenser pipe 22. The end of the copper pipe is fixedly connected to the other end of the condenser pipe 22. The drying mechanism 4 includes a pair of placement boxes 41. Both ends of the box 1 are provided with insertion interfaces 18. The placement boxes 41 are slidably connected inside the insertion interfaces 18. The opposite ends of the pair of placement boxes 41 abut against abutment blocks 44. The upper and lower ends of the abutment blocks 44 are respectively fixedly connected to the lower end of the third partition 14 and the inner wall of the box 1. The end of the placement box 41 is fixedly connected to a back plate 42. The side wall of the back plate 42 is fixedly connected to a fixing ear 43. The fixing ear 43 is fixedly connected to the outer wall of the box 1 by bolts. Silica gel desiccant is placed inside the placement box 41. The drainage mechanism 7 includes a drainage box 71, which is fixedly connected to the rear end inside the box body 1. A conduit 72 is fixedly connected to the upper end inside the drainage box 71. The upper end of the conduit 72 passes through the first partition 12, and the lower end of the conduit 72 is located below the inside of the drainage box 71. A drainage pipe 73 is fixedly connected to the lower end inside the drainage box 71. The lower end of the drainage pipe 73 passes through to the outside of the box body 1, and the upper end of the drainage pipe 73 is located above the inside of the drainage box 71.

[0026] In this embodiment, as Figure 3 , Figures 5-7 As shown, when the humidity sensor 161 detects that the moisture content of the outside air has reached the pre-threshold, the compressor 21 starts, and the low-temperature, low-pressure working fluid is drawn into the condenser tube 22, flowing along an "S"-shaped path, and the tube wall cools down rapidly. When the humid air passes over the outer surface of the condenser tube 22, the water vapor condenses into water droplets upon contact with the condenser and drips down, flowing along the bottom of the inclined cavity to the port of the conduit 72, and is directly injected into the bottom of the drain tank 71 through the conduit 72. After the liquid level in the drain tank 71 rises, when the water level exceeds the upper end of the drain pipe 73, it will be discharged out of the tank. The air that has been condensed and dehydrated continues to descend and enters the pull-out placement box 41. The silica gel desiccant in the box adsorbs the residual moisture a second time. After the desiccant is saturated, the placement box 41 can be pulled out along the insertion interface 18 simply by loosening the fixing lug 43 bolts, and then pushed back in after replacement. The stop block 44 and the stop plate 42 together ensure the box is sealed to prevent unfiltered air from bypassing. At this point, most of the moisture in the air is condensed out, and then the silica gel further dries it, ultimately resulting in a dry airflow with a dew point far lower than that of the external environment, providing long-term stable low-humidity operating conditions for the optical components inside the enclosure. Example

[0027] The difference from Embodiment 2 is that this embodiment discloses the specific structures of the air intake mechanism 5 and the air outlet mechanism 6; The air intake mechanism 5 includes four air cylinders 51. The air cylinders 51 are fixedly connected inside the third partition 14 and their lower ends extend to the lower end of the third partition 14. A protective net 52 is fixedly connected inside the upper end of the air cylinder 51. An installation sleeve 53 is fixedly connected to the inner wall of the air cylinder 51. A rotating shaft 54 ​​is rotatably connected inside the installation sleeve 53. A first fan blade 55 is fixedly connected to the upper end of the rotating shaft 54. The intake mechanism 5 also includes a transmission rod 56, which is rotatably connected to the bottom of the housing 1 through a bearing seat. Four first bevel gears 58 are fixedly connected to the side wall of the transmission rod 56, and each of the first bevel gears 58 is meshed with a second bevel gear 59. The upper end of the second bevel gear 59 is fixedly connected to the lower end of the corresponding rotating shaft 54. A first motor 57 is fixedly connected to the bottom of the housing 1, and the output shaft end of the first motor 57 is fixedly connected to the right end of the transmission rod 56. The air outlet mechanism 6 includes a second motor 61. A through hole 131 is opened on the upper left side of the first partition 12. The second motor 61 is fixedly connected above the first partition 12 by a fixing bracket. A second fan blade 62 is fixedly connected to the output shaft end of the second motor 61. The second fan blade 62 is located inside the through hole 131.

[0028] In this embodiment, as Figures 4-5 As shown, after the first motor 57 is energized, it drives the transmission rod 56 to rotate, and the four first bevel gears 58 rotate synchronously. The second bevel gears 59 meshing with them then reverse direction, driving the four rotating shafts 54 to rotate at high speed. The first fan blades 55 fixed at the top of the rotating shafts 54 rotate in their respective air cylinders 51, thereby creating a negative pressure zone at the lower end of the air cylinders 51 to extract the condensed and filtered air. The extracted air flows upward, passes through the mounting bracket 15 to carry away the heat from the fiber optic tray and power module, and converges at the through hole 131 on the left side of the first partition 12. At this time, the second motor 61 drives the second fan blades 62 to rotate at high speed, quickly drawing the hot and humid air at the through hole 131 to the mounting cavity 132, and then expelling it from the left air outlet 17, forming a forced circulation of "bottom in, top out". Through the coordinated action of the air intake mechanism 5 and the air outlet mechanism 6, the box 1 always maintains a slight positive pressure and continuous ventilation, which not only prevents the backflow of external humid air, but also ensures that the optical devices operate stably in a dry and low-temperature environment.

[0029] The working principle of this invention is as follows: Outdoor humid air enters the dehumidification chamber 131 through the right air inlet 16 under the continuous negative pressure of the air intake mechanism 5. During the process, the humidity is monitored in real time by the humidity sensor 161. When the humidity exceeds a set threshold, the compressor 21 starts, and the working fluid circulates at a low temperature within the "S"-shaped condenser tube 22, causing the tube wall temperature to drop below the dew point. Water vapor in the humid air condenses into water droplets on the outer surface of the tube, flowing along the bottom of the inclined chamber to the conduit 72 and into the bottom of the drain tank 71. As the liquid level in the drain tank 71 rises, it is discharged outside the tank when the water level exceeds the upper end of the drain pipe 73, completing the first stage of dehydration. The low-temperature air, after most of the moisture has been removed, flows downwards through the air pipe 3 within the first partition 12. The fins 31 on the outer wall of the air pipe 3 diffuse the cooling energy to the surrounding components, forming auxiliary cooling. After reaching the area below the third partition 14, the air passes through the silica gel desiccant in the removable placement box 41, where residual moisture is adsorbed a second time, achieving a second stage of deep drying and obtaining a dry airflow with a significantly lower dew point. After drying, the cold air is simultaneously propelled by the four first blades 55 of the intake mechanism 5, passing through the third partition 14 from bottom to top. It flows evenly over the fiber optic tray, power module, and control unit on the mounting frame 15, carrying away heat and becoming hot and humid air, which then gathers at the through hole 131 on the left side of the first partition 12. At this time, the second blade 62 of the exhaust mechanism 6 rotates at high speed, forcibly drawing the hot and humid air into the mounting cavity 132 and discharging it out of the box through the left exhaust port 17, forming a forced circulation of "bottom in, top out". Throughout the process, the box 1 maintains a slight positive pressure, preventing backflow of external humid air. The dual dehumidification of condensation and adsorption works continuously and collaboratively, with automatic discharge of condensate and rapid replacement of silica gel once saturated. This achieves a long-term maintenance-free low-humidity, low-temperature, and clean operating environment, ensuring the stable operation of optical fiber splicing trays, ONUs, and other optical devices, and significantly improving the reliability and lifespan of the power distribution automation communication terminal.

[0030] While the disclosure is as stated above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the protection scope of this invention.

Claims

1. A power distribution automation communication terminal box, comprising a box body (1), characterized in that, A first partition (12) is fixedly connected to the upper side of the interior of the housing (1). A second partition (13) is fixedly connected to the middle of the upper end of the first partition (12). The second partition (13) divides the housing (1) above the first partition (12) into a dehumidification chamber (131) and an installation chamber (132). The installation chamber (132) is located on the left side of the dehumidification chamber (131). The bottom of the dehumidification chamber (131) is inclined downward from front to back. A third partition (14) is fixedly connected to the lower side of the interior. A door (11) is hinged to the front end of the box (1). An air inlet (16) is opened on the right end face of the box (1). The air inlet (16) extends into the dehumidification chamber (131). A humidity sensor (161) is fixedly connected inside the air inlet (16). An air outlet (17) is opened on the left end face of the box (1). The air outlet (17) extends into the mounting cavity (132). The box also includes: Dehumidification mechanism (2), which is installed inside the dehumidification chamber (131), is used to remove most of the water molecules in the air; Air tube (3); the air tube (3) is installed inside the first partition (12), the upper end of the air tube (3) extends to the right end of the second partition (13), the lower end of the air tube (3) extends to the lower end of the third partition (14), and fins (31) are fixedly connected at equal intervals to the side wall of the air tube (3). Drying mechanism (4), which is installed inside the box (1) below the third partition (14), the drying mechanism (4) filters out the remaining water molecules in the air; An air intake mechanism (5) is installed in front of the drying mechanism (4); An air outlet mechanism (6) is installed inside the mounting cavity (132); Drainage mechanism (7) is installed inside the housing (1) and is used to drain water from the dehumidification chamber (131).

2. The power distribution automation communication terminal box according to claim 1, characterized in that, The box (1) is fixedly connected with mounting brackets (15) at equal intervals inside. The front end face of the mounting brackets (15) is provided with positioning holes at equal intervals. The mounting brackets (15) are located in front of the air pipe (3).

3. The power distribution automation communication terminal box according to claim 1, characterized in that, The dehumidification mechanism (2) includes a condenser tube (22), which is fixedly connected inside the dehumidification chamber (131). The condenser tube (22) is set in an "S" shape. A compressor (21) is fixedly connected to the housing (1). The air inlet of the compressor (21) is fixedly connected to one end of the condenser tube (22). A copper tube is fixedly connected to the air outlet of the compressor (21). The inner diameter of the copper tube is smaller than the inner diameter of the condenser tube (22). The end of the copper tube is fixedly connected to the other end of the condenser tube (22).

4. A power distribution automation communication terminal box according to claim 1, characterized in that, The upper end of the box (1) is fixedly connected to a rainproof top (8), which is used to prevent rainwater from eroding the box (1).

5. A power distribution automation communication terminal box according to claim 1, characterized in that, The drying mechanism (4) includes a pair of placement boxes (41). Both ends of the box (1) are provided with insertion interfaces (18). The placement boxes (41) are slidably connected inside the insertion interfaces (18). The opposite ends of the pair of placement boxes (41) abut against each other with abutting blocks (44). The upper and lower ends of the abutting blocks (44) are respectively fixedly connected to the lower end of the third partition (14) and the inner wall of the box (1). The end of the placement box (41) is fixedly connected with a backing plate (42). The side wall of the backing plate (42) is fixedly connected with a fixing ear (43). The fixing ear (43) is fixedly connected to the outer wall of the box (1) by bolts. Silica gel desiccant is placed inside the placement box (41).

6. A power distribution automation communication terminal box according to claim 1, characterized in that, The air intake mechanism (5) includes four air cylinders (51). The air cylinders (51) are fixedly connected inside the third partition (14), and their lower ends extend to the lower end of the third partition (14). A protective net (52) is fixedly connected inside the upper end of the air cylinder (51). An installation sleeve (53) is fixedly connected to the inner wall of the air cylinder (51). A rotating shaft (54) is rotatably connected inside the installation sleeve (53). A first fan blade (55) is fixedly connected to the upper end of the rotating shaft (54). The air intake mechanism (5) also includes a transmission rod (56), which is rotatably connected to the bottom of the housing (1) through a bearing seat. Four first bevel gears (58) are fixedly connected to the side wall of the transmission rod (56), and each of the first bevel gears (58) is meshed with a second bevel gear (59). The upper end of the second bevel gear (59) is fixedly connected to the lower end of the corresponding rotating shaft (54). A first motor (57) is fixedly connected to the bottom of the housing (1), and the output shaft end of the first motor (57) is fixedly connected to the right end of the transmission rod (56).

7. A power distribution automation communication terminal box according to claim 1, characterized in that, The air outlet mechanism (6) includes a second motor (61), and a through hole (131) is opened on the upper left side of the first partition (12). The second motor (61) is fixedly connected above the first partition (12) by a fixing bracket. A second fan blade (62) is fixedly connected to the output shaft end of the second motor (61), and the second fan blade (62) is located inside the through hole (131).

8. A power distribution automation communication terminal box according to claim 1, characterized in that, The drainage mechanism (7) includes a drainage box (71), which is fixedly connected to the rear end inside the box body (1). A conduit (72) is fixedly connected to the upper end inside the drainage box (71). The upper end of the conduit (72) passes through the first partition (12). The lower end of the conduit (72) is located below the inside of the drainage box (71). A drainage pipe (73) is fixedly connected to the lower end inside the drainage box (71). The lower end of the drainage pipe (73) passes through to the outside of the box body (1). The upper end of the drainage pipe (73) is located above the inside of the drainage box (71) body (1).

Images