Photovoltaic grid-connected control box with moisture-proof and heat-resistant structure

Abstract

The invention relates to the technical field of photovoltaic grid-connected control boxes, in particular to a photovoltaic grid-connected control box with a moisture-proof and heat-resistant structure, which comprises a box body, a cabinet door is arranged on one side of the outer wall of the box body; ventilation grooves are formed in the two opposite sides of the outer wall of the box body. Filter plates are fixedly connected to the inner side walls of the pair of ventilation grooves; a motor drives a rotating shaft to rotate, the rotating shaft drives a first bevel gear to rotate, rotation of the first bevel gear drives a rotating rod and an adjusting plate to rotate through a second bevel gear, rotation of the adjusting plate can extrude a pair of baffles to contract, and at the moment, the interior of a round pipe is opened to be in a ventilation state; when the temperature in the box body is reduced to a certain value, the motor enables the adjusting plate to reset, the interior of the round pipe is blocked by the adjusting plate and the pair of baffles to be in a closed state, water cannot enter the box body through air, and due to the fact that the temperature in the box body is kept in a certain interval, the interior of the box body is not prone to being affected by the humid environment to generate condensation.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaic grid-connected control boxes, and in particular to a photovoltaic grid-connected control box with a moisture-proof and heat-resistant structure. Background Art

[0002] Photovoltaic grid-connected control box is also called photovoltaic grid-connected box. It is a device used in photovoltaic power generation system. It is mainly used to realize the connection between power grid and photovoltaic power generation system. It not only realizes the efficient transmission and grid connection of electric energy, but also provides comprehensive monitoring, protection and metering functions, thus ensuring the safe, stable and reliable operation of photovoltaic power generation system, making it an indispensable and important equipment in photovoltaic power generation system. In the prior art, when the photovoltaic grid-connected control box is located in a high temperature and humid environment, water molecules in the high temperature and humid environment will enter the photovoltaic grid-connected control box with the circulation of air, and condensation will occur on the electrical components in the photovoltaic grid-connected control box. If the condensation on the electrical components cannot be handled in time, the safety and service life of the motor components will be affected. Currently, the commonly used moisture-proof means is to prevent moisture from invading the interior of the control box through sealing design, hygroscopic materials and other measures. Because the electrical components will generate heat during operation, the sealing design will cause the temperature in the photovoltaic grid-connected control box to gradually increase. When the temperature in the photovoltaic grid-connected control box is too high, it will not only cause the performance of the electrical components to decline, but also increase the risk of circuit short circuit and reduce the power generation efficiency. Summary of the invention

[0003] The purpose of the present invention is to solve the problem that when a photovoltaic grid-connected control box is located in a high temperature and humid environment, water molecules in the high temperature and humid environment will enter the interior of the photovoltaic grid-connected control box with the circulation of air, and condensation will be generated on the electrical components in the photovoltaic grid-connected control box. If the condensation on the electrical components cannot be handled in time, it will affect the safety and service life of the motor components. The currently commonly used moisture-proof means is to prevent moisture from invading the interior of the control box through sealing design, hygroscopic materials and other measures. Because the electrical components will generate heat during operation, the sealing design will cause the temperature in the photovoltaic grid-connected control box to gradually increase. When the temperature in the photovoltaic grid-connected control box is too high, it will not only cause the performance of the electrical components to decline, but also increase the risk of circuit short circuit and reduce the power generation efficiency. The problem, therefore, is proposed, which has a moisture-proof and heat-resistant structure for photovoltaic grid-connected control boxes.

[0004] The purpose of the present invention can be achieved through the following technical solutions: A photovoltaic grid-connected control box with a moisture-proof and heat-resistant structure, comprising a box body; a cabinet door is arranged on one side of the outer wall of the box body; ventilation slots are provided on opposite sides of the outer wall of the box body; a pair of filter plates are fixedly connected to the inner side walls of the ventilation slots; circular tubes are fixedly connected to opposite sides of the inner wall of the box body, and the pair of circular tubes correspond to the pair of filter plates respectively; an upper shell and a lower shell are fixedly connected to the outer side walls of a pair of circular tubes, and the upper shell and the lower shell are connected to the circular tubes; baffles are fixedly connected to opposite sides of the inner walls of the upper shell and the lower shell through a first spring, and the outer side walls of a pair of baffles are slidably connected to the inner side walls of the upper shell and the lower shell respectively; a pair of baffles and The circular tube matches; an adjusting plate is rotatably connected to the inner wall of the circular tube, and the adjusting plate is located between a pair of baffles, and the adjusting plate matches the pair of baffles; a motor is fixedly connected to the outer wall of the circular tube through a fixing block; a rotating shaft is provided at the output end of the motor, and one end of the outer wall of the rotating shaft passes through the outer wall of the circular tube and is located in the circular tube; a first bevel gear is fixedly connected to one end of the outer wall of the rotating shaft located in the circular tube; a rotating rod is fixedly connected to the center of one side of the outer wall of the adjusting plate; a second bevel gear is fixedly connected to the outer wall of the rotating rod, and the second bevel gear is meshed with the first bevel gear; a temperature detection device is fixedly connected to one end of the outer wall of the motor, and the temperature detection device is electrically connected to the motor.

[0005] As a preferred embodiment of the present invention, rainproof pipes are fixedly connected to opposite sides of the outer wall of the box body, and a pair of rainproof pipes respectively correspond to a pair of filter plates; the rainproof pipe is in an inverted V shape, and one end of the outer wall of the rainproof pipe is inclined; a group of waterproof holes are opened on the outer wall of the rainproof pipe, and the group of waterproof holes are located at the bottom end of the outer wall of the rainproof pipe.

[0006] As a preferred embodiment of the present invention, one end of the outer wall of the rotating rod passes through the adjustment plate and is located between the adjustment plate and the filter plate; a pair of cleaning plates are fixedly connected to the outer wall of one end of the rotating rod located between the adjustment plate and the filter plate, and the pair of cleaning plates match the filter plate; a group of blowing fan blades are fixedly connected to the outer wall of one end of the rotating rod that does not pass through the adjustment plate, and the blowing fan blades are located in the circular tube.

[0007] As a preferred embodiment of the present invention, a square through groove is provided on one side of the outer wall of the cleaning plate; a first round rod and a second round rod are rotatably connected to one side of the outer wall of the cleaning plate; an annular rack 1 is fixedly connected to the inner wall of the circular tube; one end of the outer wall of the first round rod and the second round rod both penetrates one side of the outer wall of the cleaning plate and is located in the square through groove; one end of the outer wall of the first round rod and the second round rod located in the square through groove is fixedly connected to an auxiliary plate, and a pair of auxiliary plates match; a third gear is fixedly connected to the outer wall of one end of the first round rod located outside the cleaning plate, and the third gear is meshed with the annular rack 1; a fourth gear is fixedly connected to the outer wall of one end of the first round rod and the second round rod located outside the cleaning plate, and a pair of fourth gears are meshed with each other.

[0008] As a preferred embodiment of the present invention, a group of suction fan blades 2 are fixedly connected to the outer side walls of one end of the first round rod and the second round rod located outside the cleaning plate; a group of blowing fan blades 2 are fixedly connected to the outer side walls of one end of the first round rod and the second round rod located in the square through groove; the two groups of blowing fan blades 2 are respectively matched with the two groups of suction fan blades 2; a group of circular grooves are opened on one side of the outer wall of the third gear, the fourth gear and the cleaning plate, and a group of circular grooves are respectively matched with the two groups of blowing fan blades 2 and the suction fan blades 2.

[0009] As a preferred embodiment of the present invention, a pair of baffles are each provided with a group of heat dissipation grooves on one side of the outer wall, and the two groups of heat dissipation grooves are distributed in a semicircular shape; the heat dissipation grooves are in a truncated cone shape; the inner side wall of the heat dissipation groove is fixedly connected with a first square plate; the outer side of the first square plate is fixedly connected with a one-way plate through a second spring, and the one-way plate is located in the middle of the heat dissipation groove, and the one-way plate matches the heat dissipation groove.

[0010] As a preferred embodiment of the present invention, a third through groove is opened on one side of the outer wall of the auxiliary plate; a slide plate is fixedly connected to one side of the inner wall of the third through groove through a third spring, and the outer wall of the slide plate is slidably connected to the inner wall of the third through groove; a group of cleaning brushes is fixedly connected to one side of the outer wall of the slide plate, and the group of cleaning brushes matches the filter plate.

[0011] As a preferred embodiment of the present invention, a linkage plate is fixedly connected to the top end of the outer wall of the baffle in the upper shell, and the top end of the outer wall of the linkage plate passes through the upper shell, and the linkage plate is slidably connected to the upper shell; the outer wall of one end of the linkage plate located outside the upper shell is rotatably connected to a circular rod, and one end of the outer wall of the circular rod passes through the linkage plate; one end of the circular rod passing through the outer wall of the linkage plate is fixedly connected to a sixth gear; sixth racks are fixedly connected to the opposite sides of the inner wall of the box body through a third party plate, and a pair of sixth racks are respectively meshed with a pair of sixth gears; a group of blowing fan blades three are fixedly connected to the outer wall of the end of the circular rod that does not pass through the linkage plate.

[0012] As a preferred embodiment of the present invention, the linkage plate is located on one side of the outer wall outside the upper shell body, and the seventh gear is sleeved on the outer side wall of the circular rod, and the seventh gear is rotatably connected to the circular rod; a group of the outer wall of the blowing fan blade three is rotatably connected to the fifth circular rod, and one end of the outer wall of the fifth circular rod passes through the blowing fan blade three; a group of the fifth circular rod passes through one end of the outer wall of the blowing fan blade three and is fixed with an eighth gear, and a group of the eighth gears are meshed with the seventh gear; a group of the fifth circular rod that does not pass through the outer side wall of the blowing fan blade three is fixed with a group of the blowing fan blade four.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. The rotation of the rotating rod will drive a group of blowing fan blades to rotate, so that the rotation of a group of blowing fan blades guides the wind direction and accelerates the flow of hot air, thereby accelerating the heat dissipation efficiency in the box, and the rotation of the rotating rod will drive a pair of cleaning plates to rotate, so that a pair of cleaning plates clean the filter plate, so that the dust and impurities on the filter plate will be cleaned by the cleaning plates, thereby ensuring that the ventilation and heat dissipation efficiency of the filter plate is not easily reduced, and the cleaning plate and the blowing fan blades rotate, so that when the cleaning plate scrapes and cleans the dust again, the wind blown by the blowing fan blades will blow the dust out of the filter plate, so that the dust is blown out of the box, thereby not only reducing the dust accumulation in the box, the filter plate and the round tube, so that the heat dissipation efficiency of the box is guaranteed, but also improving the cleaning efficiency of the cleaning plate.

[0014] 2. The rotation of the auxiliary plate will drive the slide plate to rotate, and the slide plate will drive the cleaning brush to rotate, so that the cleaning brush cleans the filter plate, so that the cleaning effect and efficiency of the filter plate of the device are better, and the slide plate is connected to the auxiliary plate through the third spring, so that the elastic force of the third spring will make the cleaning brush on the slide plate fit tightly to the filter plate, so that the cleaning brush can clean the holes or seams on the filter plate, so that the dust accumulated in the holes or seams on the filter plate will also be cleaned by the cleaning brush, so that the dust accumulated on the filter plate is cleaned more thoroughly, thereby further improving the heat dissipation efficiency of the filter plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0016] Figure 1 It is the main structure diagram of the present invention; Figure 2 It is the internal structure diagram of the box of the present invention; Figure 3 It is a partial structural diagram of the main body of the present invention; Figure 4 It is an exploded structural diagram of the box body and the filter plate of the present invention; Figure 5 It is a structural diagram of the round tube, the upper shell, the lower shell and the baffle of the present invention; Figure 6 It is a structural diagram of the motor, the regulating plate, the blowing fan blade and the cleaning plate of the present invention; Figure 7 The exploded structural diagram of the cleaning plate and the auxiliary plate of the present invention; Figure 8 It is a structural diagram of the slide plate, the auxiliary plate, the cleaning plate and the second blowing fan blade of the present invention; Fig. 9 It is a structural diagram of the upper shell, the lower shell, the baffle and the blower blade 4 of the present invention; Fig.10It is an exploded structural diagram of the baffle and the one-way plate of the present invention; Fig.11 For the present invention Fig.10 A local enlarged view of point A; Fig.12 It is a structural diagram of the linkage plate, the sixth rack, the fourth fan blade and the third fan blade of the present invention; In the figure: 1, box body; 2, cabinet door; 3, ventilation slot; 4, filter plate; 5, round tube; 6, upper shell; 7, lower shell; 8, baffle; 9, adjustment plate; 10, motor; 11, rotating shaft; 12, first bevel gear; 13, rotating rod; 14, second bevel gear; 15, temperature detection device; 16, rainproof pipe; 17, waterproof hole; 18, cleaning plate; 19, fan blade 1; 20, square through slot; 21, first round rod; 22, second round rod; 23, annular rack 1; 24. Auxiliary plate; 25. Third gear; 26. Fourth gear; 27. Second suction fan blade; 28. Second blowing fan blade; 29. ​​Circular groove; 30. Heat dissipation groove; 31. First square plate; 32. One-way plate; 33. Third groove; 34. Slide plate; 35. Cleaning brush; 36. Linkage plate; 37. Circular rod; 38. Sixth gear; 39. Sixth rack; 40. Third blowing fan blade; 41. Seventh gear; 42. Fifth circular rod; 43. Eighth gear; 44. Fourth blowing fan blade. DETAILED DESCRIPTION

[0017] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] Embodiment 1: See also Figure 1-Figure 11As shown, a photovoltaic grid-connected control box with a moisture-proof and heat-resistant structure includes a box body 1; a cabinet door 2 is arranged on one side of the outer wall of the box body 1; ventilation slots 3 are opened on opposite sides of the outer wall of the box body 1; a pair of filter plates 4 are fixedly connected to the inner side walls of the ventilation slots 3; circular tubes 5 are fixedly connected to the opposite sides of the inner wall of the box body 1, and the pair of circular tubes 5 correspond to the pair of filter plates 4 respectively; the outer side walls of the pair of circular tubes 5 are fixedly connected to the upper shell 6 and the lower shell 7, and the upper shell 6 and the lower shell 7 are connected to the circular tubes 5; the opposite sides of the inner walls of the upper shell 6 and the lower shell 7 are fixedly connected to the baffles 8 through the first spring, and the outer side walls of the pair of baffles 8 are slidably connected to the inner side walls of the upper shell 6 and the lower shell 7 respectively; the pair of baffles 8 and the circular The inner wall of the circular tube 5 is rotatably connected with an adjusting plate 9, and the adjusting plate 9 is located between a pair of baffles 8, and the adjusting plate 9 matches the pair of baffles 8; the outer wall of the circular tube 5 is fixedly connected with a motor 10 through a fixed block; the output end of the motor 10 is provided with a rotating shaft 11, and one end of the outer wall of the rotating shaft 11 passes through the outer wall of the circular tube 5 and is located in the circular tube 5; the outer wall end of the rotating shaft 11 located in the circular tube 5 is fixedly connected with a first bevel gear 12; a rotating rod 13 is fixedly connected to the center of one side of the outer wall of the adjusting plate 9; the outer wall of the rotating rod 13 is fixedly connected with a second bevel gear 14, and the second bevel gear 14 and the first bevel gear 12 are meshed with each other; a temperature detection device 15 is fixedly connected to one end of the outer wall of the motor 10, and the temperature detection device 15 is fixedly connected to one end of the outer wall of the motor 10, and the temperature detection device 15 is fixedly connected to the outer wall end of the motor 10. The temperature detection device 15 is electrically connected to the motor 10, and when the temperature detection device 15 detects that the temperature in the box 1 is too high, the temperature detection device 15 will start the motor 10, so that the motor 10 drives the rotating shaft 11 to rotate, and the rotating shaft 11 drives the first bevel gear 12 to rotate. Because the outer wall of the rotating rod 13 is fixedly connected with the second bevel gear 14, and the second bevel gear 14 and the first bevel gear 12 are meshed with each other, the rotation of the first bevel gear 12 drives the rotating rod 13 to rotate through the second bevel gear 14. Because the rotating rod 13 is fixedly connected to the adjusting plate 9, the rotation of the rotating rod 13 drives the adjusting plate 9 to rotate on the inner wall of the round tube 5. When the adjusting plate 9 rotates, the rotation of the adjusting plate 9 will squeeze a pair of baffles 8, so that the baffles 8 The first spring is driven to contract, and the interior of the circular tube 5 is opened. At this time, the box body 1 is in a ventilated state, and the heat in the box body 1 can be discharged. When the temperature in the box body 1 drops to a certain value, the motor 10 will continue to install the adjustment plate 9, so that the adjustment plate 9 is placed horizontally. At this time, the internal space of the circular tube 5 will be blocked by the adjustment plate 9 plus a pair of baffles 8, so that the circular tube 5 is in a closed state, and the box body 1 is a sealed device, so that moisture in a high temperature and humid environment cannot enter the box body 1 through the air, and the temperature in the box body 1 is always maintained in a certain range, so that the box body 1 with a suitable temperature is not easily affected by the humid environment to produce condensation, so that the device is not only moisture-proof, but also has heat-resistant and heat-dissipating functions.

[0019] One end of the outer wall of the rotating rod 13 passes through the adjustment plate 9 and is located between the adjustment plate 9 and the filter plate 4; a pair of cleaning plates 18 are fixedly connected to the outer wall of the end of the rotating rod 13 located between the adjustment plate 9 and the filter plate 4, and the pair of cleaning plates 18 match the filter plate 4; a group of blowing fan blades 19 are fixedly connected to the outer wall of the end of the rotating rod 13 that does not pass through the adjustment plate 9, and the blowing fan blades 19 are located in the circular tube 5. When the rotating rod 13 rotates to drive the adjustment plate 9 to rotate for ventilation and heat dissipation, the rotation of the rotating rod 13 will drive a group of blowing fan blades 19 to rotate, so that the rotation of the group of blowing fan blades 19 guides the wind direction and accelerates the flow of hot air, thereby accelerating the heat dissipation effect in the box body 1 The dust on the filter plate 4 is cleaned by the cleaning plates 18, thereby ensuring that the ventilation and heat dissipation efficiency of the filter plate 4 is not easily reduced. When the cleaning plates 18 and the fan blades 19 are rotated, the wind blown by the fan blades 19 will blow the dust out of the filter plate 4, so that the dust is blown out of the box body 1. This can not only reduce the dust accumulation in the box body 1, the filter plate 4 and the round tube 5, but also ensure the heat dissipation efficiency of the box body 1, and improve the cleaning efficiency of the cleaning plates 18.

[0020] The outer wall of the box body 1 is fixedly connected with rainproof pipes 16 on opposite sides, and a pair of rainproof pipes 16 respectively correspond to a pair of filter plates 4; the rainproof pipe 16 is in an inverted V shape, and one end of the outer wall of the rainproof pipe 16 is inclined; the outer wall of the rainproof pipe 16 is provided with a group of waterproof holes 17, and a group of waterproof holes 17 is located at the bottom end of the outer wall of the rainproof pipe 16, and the outer wall of the box body 1 is fixedly connected with rainproof pipes 16 on opposite sides, and a pair of rainproof pipes 16 respectively correspond to a pair of filter plates 4, so that when it rains, rainwater falls on the rainproof pipe 16 and falls along the rainproof pipe 16, and because the two ends of the rainproof pipe 16, one end is fixedly connected to the box body 1, and the other end is inclined, so that rainwater cannot enter the rainproof pipe 16 through the opening of the rainproof pipe 16, and enters the box body 1 through the rainproof pipe 16 The box body 1 also has a rainproof function when ventilated, and the structure of the rainproof pipe 16 can have a certain moisture and condensation prevention effect. When rainwater enters the rainproof pipe 16 through one end of the inclined rainproof pipe 16 or condensation occurs on the inner wall of the rainproof pipe 16, a group of waterproof holes 17 are opened through the outer wall of the rainproof pipe 16, and a group of waterproof holes 17 are located at the bottom end of the outer wall of the rainproof pipe 16, so that rainwater and condensation will fall through the waterproof holes 17, thereby preventing rainwater and condensation from accumulating in the rainproof pipe 16, and because the waterproof holes 17 are at the bottom of the rainproof pipe 16, rainwater and external moisture are not easy to enter the rainproof pipe 16 through the waterproof holes 17, so that the device can not only prevent moisture condensation and heat dissipation, but also has a rainproof function, making the device more practical.

[0021] A square through groove 20 is provided on one side of the outer wall of the cleaning plate 18; a first round rod 21 and a second round rod 22 are rotatably connected to one side of the outer wall of the cleaning plate 18; an annular rack 23 is fixedly connected to the inner side wall of the circular tube; one end of the outer wall of the first round rod 21 and the second round rod 22 both penetrate one side of the outer wall of the cleaning plate 18 and are located in the square through groove 20; one end of the outer wall of the first round rod 21 and the second round rod 22 located in the square through groove 20 are fixedly connected to an auxiliary plate 24, and a pair of auxiliary plates 24 match; the outer wall of one end of the first round rod 21 located outside the cleaning plate 18 is fixedly connected to a third gear 25, and the third gear 25 and the annular rack 23 are meshed with each other; the outer wall of one end of the first round rod 21 and the second round rod 22 located outside the cleaning plate 18 are fixedly connected to a fourth gear 26, and a pair of fourth gears 26 are meshed with each other, and when the cleaning plate 18 cleans the filter plate 4, the rotation of the cleaning plate 18 will drive the first round rod 21 to rotate around the center of the rotating rod 13, and the rotation of the first round rod 21 will drive the third The gear 25 rotates. Since the third gear 25 is meshed with the annular rack 123 and the annular rack 123 is in a fixed state, the third gear 25 rotates around the center of the rotating rod 13. As the inner side wall of the annular rack 123 circulates and rotates, the third gear 25 rotates while rotating, so that the rotation of the third gear 25 drives the first round rod 21 to rotate. Since the outer side wall of the first round rod 21 and the second round rod 22 at one end outside the cleaning plate 18 is fixedly connected with the fourth gear 26, and the pair of fourth gears 26 are meshed with each other, the rotation of the first round rod 21 drives the second round rod 22 to rotate through the pair of fourth gears 26, so that the rotation of the first round rod 21 and the second round rod 22 drives the pair of auxiliary plates 24 to rotate, so that the pair of auxiliary plates 24 cleans the filter plate 4, thereby further improving the cleaning efficiency and effect of the filter plate 4 of the device, so that the dust on the filter plate 4 is cleaned more quickly and thoroughly, so that the ventilation efficiency of the device is not easily reduced due to the clogging of the filter plate 4.

[0022] A group of heat dissipation grooves 30 are provided on one side of the outer wall of a pair of baffles 8, and the two groups of heat dissipation grooves 30 are distributed in a semicircular shape; the heat dissipation grooves 30 are in a truncated cone shape; the inner wall of the heat dissipation groove 30 is fixedly connected with a first square plate 31; a one-way plate 32 is fixedly connected to the outer side of the first square plate 31 through a second spring, and the one-way plate 32 is located in the middle of the heat dissipation groove 30, and the one-way plate 32 matches the heat dissipation groove 30. When the rotating rod 13 rotates continuously, the blowing fan blade 19 and multiple groups of blowing fan blades 28 and suction fan blades 27 rotate, thereby accelerating the heat dissipation efficiency of the box body 1, the continuous rotation of the rotating rod 13 will cause the pair of baffles 8 to be closed and opened from time to time. When the pair of baffles 8 are closed, heat cannot flow out through the round tube 5, thereby affecting the The heat dissipation efficiency of the box body 1 is improved by providing a group of heat dissipation grooves 30 on one side of the outer wall of a pair of baffles 8. When heat is blown toward the baffle 8 by blowing air, air and heat will flow to the heat dissipation grooves 30 on the baffle 8, thereby blowing the one-way plate 32 in the heat dissipation groove 30 to move the one-way plate 32. Since the heat dissipation groove 30 is in a truncated cone shape, the movement of the one-way plate 32 will open the heat dissipation groove 30, so that heat can still be dissipated when the baffle 8 is in a closed state. Moreover, since the heat dissipation groove 30 is in a truncated cone shape, the one-way plate 32 can only move backward but not forward, so that external air and moisture cannot enter the circular tube 5 and the box body 1 through the one-way plate 32, thereby not only ensuring the safety inside the box body 1, but also further improving the heat dissipation efficiency inside the box body 1.

[0023] A group of suction fan blades 27 are fixedly connected to the outer side walls of one end of the first round rod 21 and the second round rod 22 located outside the cleaning plate 18; a group of blowing fan blades 28 are fixedly connected to the outer side walls of one end of the first round rod 21 and the second round rod 22 located in the square through groove 20; the two groups of blowing fan blades 28 are matched with the two groups of suction fan blades 27 respectively; a group of circular grooves 29 are opened on one side of the outer wall of the third gear 25, the fourth gear 26 and the cleaning plate 18, and a group of circular grooves 29 are matched with the two groups of blowing fan blades 28 and the suction fan blades 27 respectively. When the first round rod 21 and the second round rod 22 rotate, the rotation of the first round rod 21 and the second round rod 22 will drive the two groups of blowing fan blades 28 and the suction fan blades 27 to rotate, so that when the auxiliary plate 24 and the cleaning plate 18 clean the filter plate 4, the blowing fan blades 28 are responsible for blowing air to blow dust out of the filter plate 4 , and the suction fan blade 27 is responsible for sucking air, so that the heat in the box 1 flows out from the round tube 5 and the filter plate 4, the suction of the suction fan blade 27 will cause the heat to be sucked and flow more quickly, and when the heat reaches the blowing fan blade 28, the blowing of the blowing fan blade 28 will cause the heat to flow more quickly, which not only further accelerates the outflow of heat in the box 1, but also makes the dust to be cleaned be blown out of the box 1 more quickly under the stronger wind force, and the increase in wind force can make more and larger dust be blown, and the heat flows out of the box 1 more quickly, so that the box 1 can maintain a sealed state for a longer time, because the sealed state can further ensure the safety of the electrical components in the box 1, and the longer sealed state can further reduce the probability of the electrical components in the box 1 being affected by external forces.

[0024] A third through slot 33 is formed on one side of the outer wall of the auxiliary plate 24; a slide plate 34 is fixedly connected to one side of the inner wall of the third through slot 33 via a third spring, and the outer side wall of the slide plate 34 is slidably connected to the inner side wall of the third through slot 33; a group of cleaning brushes 35 are fixedly connected to one side of the outer wall of the slide plate 34, and the group of cleaning brushes 35 match the filter plate 4. When the auxiliary plate 24 rotates, the rotation of the auxiliary plate 24 drives the slide plate 34 to rotate, so that the slide plate 34 drives the cleaning brush 35 to rotate, so that the cleaning brush 35 cleans the filter plate 4. The cleaning effect and efficiency of the filter plate 4 of the device are better, and the slide plate 34 is connected to the auxiliary plate 24 through the third spring, so that the elastic force of the third spring can make the cleaning brush 35 on the slide plate 34 fit tightly against the filter plate 4, so that the cleaning brush 35 can clean the holes or seams on the filter plate 4, so that the dust accumulated in the holes or seams on the filter plate 4 can also be cleaned by the cleaning brush 35, so that the dust accumulated on the filter plate 4 can be cleaned more thoroughly, thereby further improving the heat dissipation efficiency of the filter plate 4.

[0025] Embodiment 2: See also Figure 9-10 and Fig.12As shown, a linkage plate 36 is fixedly connected to the top of the outer wall of the baffle plate 8 in the upper shell 6, and the top of the outer wall of the linkage plate 36 passes through the upper shell 6, and the linkage plate 36 is slidably connected to the upper shell 6; a circular rod 37 is rotatably connected to the outer wall of one end of the linkage plate 36 located outside the upper shell 6, and one end of the outer wall of the circular rod 37 passes through the linkage plate 36; a sixth gear 38 is fixedly connected to one end of the outer wall of the circular rod 37 passing through the linkage plate 36; sixth racks 39 are fixedly connected to the opposite sides of the inner wall of the box body 1 through a third party plate, and a pair of sixth racks 39 are respectively meshed with a pair of sixth gears 38; a group of fan blades 340 are fixedly connected to the outer wall of one end of the circular rod 37 that does not pass through the linkage plate 36. When the baffle 8 on the upper shell 6 moves up and down by rotating the adjusting plate 9, the up and down movement of the baffle 8 on the upper shell 6 will drive the linkage plate 36 to move up and down, and the linkage plate 36 is rotated. The movement of the movable plate 36 drives the circular rod 37 and the sixth gear 38 on the circular rod 37 to move up and down. Because the pair of sixth racks 39 are respectively meshed with the pair of sixth gears 38, the sixth gear 38 will rotate when moving up and down, so that the rotation of the sixth gear 38 drives the circular rod 37 to rotate, and the rotation of the circular rod 37 drives the fan blades three 40 to rotate. When the two groups of fan blades three 40 in the box body 1 rotate, the rotation of the fan blades three 40 can reduce the temperature of the electrical components in the box body 1, and can also accelerate the circulation of heat in the box body 1, so that the heat can flow out of the box body 1 more quickly, and through the setting position of the pair of filter plates 4 and the two groups of fan blades three 40, when the fan blades three 40 blow, air convection can be generated, thereby further accelerating the heat dissipation efficiency in the box body 1, so that the heat dissipation effect of the device is better.

[0026] The linkage plate 36 is located on the outer wall side of the upper shell 6 and is fixedly connected with the seventh gear 41, and the seventh gear 41 is sleeved on the outer wall of the circular rod 37, and the seventh gear 41 is rotatably connected to the circular rod 37; a group of the outer wall of the three blowing fan blades 40 are rotatably connected to the fifth circular rod 42, and one end of the outer wall of the fifth circular rod 42 passes through the three blowing fan blades 40; a group of the fifth circular rod 42 passes through the outer wall of the three blowing fan blades 40 and is fixedly connected with the eighth gear 43, and a group of the eighth gear 43 is meshed with the seventh gear 41; a group of the fifth circular rod 42 does not pass through the outer wall of the three blowing fan blades 40 and is fixedly connected with a group of the four blowing fan blades 44. When the three blowing fan blades 40 rotate, the rotation of the three blowing fan blades 40 will drive the fifth circular rod 42 to rotate, because a group of the fifth circular rod 42 passes through the outer wall of the three blowing fan blades 40 and is fixedly connected with the eighth gear 43. , and a group of eighth gears 43 are meshed with the seventh gear 41 and the seventh gear 41 is fixed on the linkage plate 36, and is rotatably connected with the circular rod 37, so that the seventh gear 41 is in a fixed state, and the eighth gear 43 is in a moving state, so that the eighth gear 43 will rotate along the rotation of the seventh gear 41, so that the rotation of the eighth gear 43 drives the fifth circular rod 42 to rotate, and the rotation of the fifth circular rod 42 drives a group of blowing fan blades four 44 to rotate, so that multiple groups of blowing fan blades four 44 and two groups of blowing fan blades three 40 cooperate with each other, and through the rotation of the blowing fan blade one 19 and the blowing fan blade two 28 and the suction fan blade two 27, multiple groups of fan blades at different positions in the device are rotated, and assist and cooperate with each other, so that the heat flow speed of the box body 1 is faster, so that the heat dissipation efficiency and heat dissipation effect of the device are further improved.

[0027] When the present invention is in use, when the temperature detection device 15 detects that the temperature in the box body 1 is too high, the temperature detection device 15 will start the motor 10, so that the motor 10 drives the rotating shaft 11 to rotate, and the rotating shaft 11 drives the first bevel gear 12 to rotate. Because the outer wall of the rotating rod 13 is fixedly connected with the second bevel gear 14, and the second bevel gear 14 and the first bevel gear 12 are meshed with each other, the rotation of the first bevel gear 12 drives the rotating rod 13 to rotate through the second bevel gear 14. Because the rotating rod 13 is fixedly connected to the adjusting plate 9, the rotation of the rotating rod 13 drives the adjusting plate 9 to rotate on the inner wall of the circular tube 5. When the adjusting plate 9 rotates, the rotation of the adjusting plate 9 will squeeze a pair of baffles 8, so that the baffles 8 drive the first spring to contract. At this time, the interior of the circular tube 5 is opened, and the box body 1 In the ventilation state, the heat in the box body 1 can be discharged. When the temperature in the box body 1 drops to a certain value, the motor 10 will make the adjustment plate 9 continue to be installed, so that the adjustment plate 9 is placed horizontally. At this time, the internal space of the round tube 5 will be blocked by the adjustment plate 9 plus a pair of baffles 8, so that the round tube 5 is in a closed state, and the box body 1 is a sealed device, so that moisture in a high temperature and humid environment cannot enter the box body 1 through the air, and the temperature in the box body 1 is always maintained in a certain range, so that the box body 1 with a suitable temperature is not easily affected by the humid environment to produce condensation, so that the device is not only moisture-proof, but also has heat-resistant and heat-dissipating functions, and rainproof pipes 16 are fixed on opposite sides of the outer wall of the box body 1, and the pair of rainproof pipes 16 correspond to the pair of filter plates 4 respectively. When it rains, rainwater falls on the rainproof pipe 16 and falls along the rainproof pipe 16. Because the two ends of the rainproof pipe 16, one end is fixedly connected to the box body 1, and the other end is inclined, rainwater cannot enter the rainproof pipe 16 through the opening of the rainproof pipe 16. It enters the box body 1 through the rainproof pipe 16, so that the box body 1 also has a rainproof function when ventilated, and the structure of the rainproof pipe 16 can have a certain moisture and condensation prevention effect. When rainwater enters the rainproof pipe 16 through one end of the inclined rainproof pipe 16 or condensation is generated on the inner wall of the rainproof pipe 16, a group of waterproof holes 17 are opened through the outer wall of the rainproof pipe 16, and the group of waterproof holes 17 are located at the bottom end of the outer wall of the rainproof pipe 16, so that rainwater and condensation can fall through the waterproof holes 17, thereby In order to prevent rainwater and condensation from accumulating in the rainproof pipe 16, and because the waterproof hole 17 is at the bottom of the rainproof pipe 16, it is not easy for rainwater and external moisture to enter the rainproof pipe 16 through the waterproof hole 17, so that the device can not only prevent moisture condensation and heat dissipation, but also has a rainproof function, making the device more practical, and when the rotating rod 13 rotates to drive the adjustment plate 9 to rotate for ventilation and heat dissipation, the rotation of the rotating rod 13 will drive a group of blowing fan blades 19 to rotate, so that the rotation of the group of blowing fan blades 19 guides the wind direction and accelerates the flow of hot air, thereby accelerating the heat dissipation efficiency in the box body 1, and the rotation of the rotating rod 13 will drive a pair of cleaning plates 18 to rotate, so that the pair of cleaning plates 18 clean the filter plate 4, so that the dust and impurities on the filter plate 4 will be cleaned by the cleaning plates 18,Thereby, it is ensured that the ventilation and heat dissipation efficiency of the filter plate 4 is not easily reduced, and the cleaning plate 18 and the blowing fan blade 19 rotate, so that when the cleaning plate 18 scrapes and cleans the dust, the wind blown by the blowing fan blade 19 will blow the dust out of the filter plate 4, so that the dust is blown out of the box body 1, thereby not only reducing the dust accumulation in the box body 1, the filter plate 4 and the circular tube 5, so that the heat dissipation efficiency of the box body 1 is guaranteed, but also improving the cleaning efficiency of the cleaning plate 18, and when the cleaning plate 18 cleans the filter plate 4, the rotation of the cleaning plate 18 will drive the first round rod 21 to rotate around the center of the rotating rod 13, and the rotation of the first round rod 21 will drive the third gear 25 to rotate, because the third gear 25 is meshed with the annular rack 123, and the annular rack 123 is In the fixed state, the third gear 25 rotates around the center of the rotating rod 13, so that when the inner side wall of the annular rack 23 circulates, the third gear 25 rotates while rotating, so that the rotation of the third gear 25 drives the first round rod 21 to rotate. Because the outer side walls of one end of the first round rod 21 and the second round rod 22 located outside the cleaning plate 18 are fixedly connected with the fourth gear 26, and the pair of fourth gears 26 are meshed with each other, the rotation of the first round rod 21 drives the second round rod 22 to rotate through the pair of fourth gears 26, so that the rotation of the first round rod 21 and the second round rod 22 drives the pair of auxiliary plates 24 to rotate, so that the pair of auxiliary plates 24 cleans the filter plate 4, thereby further improving the cleaning efficiency and effect of the device on the filter plate 4, thereby removing dust from the filter plate 4. The cleaning of the filter plate 4 is faster and more thorough, so that the ventilation efficiency of the device is not easily reduced due to the clogging of the filter plate 4, and when the first round rod 21 and the second round rod 22 rotate, the rotation of the first round rod 21 and the second round rod 22 will drive the two sets of blowing fan blades 28 and the suction fan blades 27 to rotate, so that when the auxiliary plate 24 and the cleaning plate 18 clean the filter plate 4, the blowing fan blades 28 are responsible for blowing air to blow the dust out of the filter plate 4, and the suction fan blades 27 are responsible for sucking air, so that when the heat in the box body 1 flows out from the round tube 5 and the filter plate 4, the suction of the suction fan blades 27 will cause the heat to be sucked, so that it flows more quickly, and when the heat reaches the blowing fan blades 28, the blowing of the blowing fan blades 28 will make the heat flow more quickly, which not only further The heat outflow in the box body 1 is accelerated, and a stronger wind force is used to blow the cleaned dust, so that the dust can be blown out of the box body 1 more quickly under a stronger wind force, and the increase in wind force can make more and larger dust be blown, and the heat can flow out of the box body 1 more quickly, so that the box body 1 can maintain a sealed state for a longer time, because the sealed state can further ensure the safety of the electrical components in the box body 1, and the longer sealed state can further reduce the probability that the electrical components in the box body 1 are affected by external forces, and when the rotating rod 13 is continuously rotated, the blowing fan blade 19 and the multiple groups of blowing fan blades 28 and suction fan blades 27 are rotated, thereby accelerating the heat dissipation efficiency of the box body 1, the continuous rotation of the rotating rod 13 will cause the pair of baffles 8 to be closed from time to time and open from time to time,When the pair of baffles 8 are closed, heat will not be able to flow out through the circular tube 5, thereby affecting the heat dissipation efficiency of the box body 1. A group of heat dissipation slots 30 are opened on one side of the outer wall of the pair of baffles 8. When the heat is blown to the baffles 8 by blowing, the air and heat will flow to the heat dissipation slots 30 on the baffles 8, thereby blowing the one-way plate 32 in the heat dissipation slot 30 to move the one-way plate 32. Since the heat dissipation slot 30 is in a truncated cone shape, the movement of the one-way plate 32 will open the heat dissipation slot 30, so that heat can still be dissipated when the baffles 8 are closed. Moreover, since the heat dissipation slot 30 is in a truncated cone shape, the one-way plate 32 can only move backwards but not forwards, so that external air and moisture cannot enter the circular tube 5 and the box body 1 through the one-way plate 32, thereby not only The safety inside the box body 1 is guaranteed, and the heat dissipation efficiency inside the box body 1 is further improved. When the auxiliary plate 24 rotates, the rotation of the auxiliary plate 24 will drive the slide plate 34 to rotate, so that the slide plate 34 drives the cleaning brush 35 to rotate, so that the cleaning brush 35 cleans the filter plate 4, so that the cleaning effect and efficiency of the filter plate 4 of the device are better, and the slide plate 34 is connected to the auxiliary plate 24 through the third spring, so that the elastic force of the third spring will make the cleaning brush 35 on the slide plate 34 fit tightly against the filter plate 4, so that the cleaning brush 35 can clean the holes or seams on the filter plate 4, so that the dust accumulated in the holes or seams on the filter plate 4 will also be cleaned by the cleaning brush 35, so that the dust accumulated on the filter plate 4 can be cleaned more thoroughly. Thereby, the heat dissipation efficiency of the filter plate 4 is further improved, and when the baffle plate 8 on the upper shell 6 moves up and down by the rotation of the adjustment plate 9, the up and down movement of the baffle plate 8 on the upper shell 6 will drive the linkage plate 36 to move up and down, and the movement of the linkage plate 36 drives the circular rod 37 and the sixth gear 38 on the circular rod 37 to move up and down. Because the pair of sixth racks 39 are respectively meshed with the pair of sixth gears 38, the sixth gear 38 will rotate when moving up and down, so that the rotation of the sixth gear 38 drives the circular rod 37 to rotate, and the rotation of the circular rod 37 drives the fan blade three 40 to rotate. When the two groups of fan blades 40 in the box body 1 rotate, the rotation of the fan blade three 40 can reduce the temperature of the electrical components in the box body 1, and can also accelerate the box body. 1, so that the heat can flow out of the box body 1 more quickly, and through the arrangement positions of the pair of filter plates 4 and the two groups of blowing fan blades 3 40, when the blowing fan blades 3 40 blow, air convection can be generated, thereby further accelerating the heat dissipation efficiency in the box body 1, making the heat dissipation effect of the device better, and when the blowing fan blades 3 40 rotate, the rotation of the blowing fan blades 3 40 will drive the fifth round rod 42 to rotate, because one end of a group of fifth round rods 42 passing through the outer wall of the blowing fan blades 3 40 is fixedly connected with the eighth gear 43, and a group of eighth gears 43 are meshed with the seventh gear 41 and the seventh gear 41 is fixed on the linkage plate 36, and is rotatably connected with the round rod 37, so that the seventh gear 41 is in a fixed state and the eighth gear 43 is in a moving state.When the eighth gear 43 rotates along the seventh gear 41, it will rotate, so that the rotation of the eighth gear 43 drives the fifth round rod 42 to rotate, and the rotation of the fifth round rod 42 drives a group of four blowing fan blades 44 to rotate, so that multiple groups of four blowing fan blades 44 and two groups of three blowing fan blades 40 cooperate with each other, and through the rotation of the blowing fan blade 19, the blowing fan blade 28 and the suction fan blade 27, multiple groups of blades at different positions in the device rotate, and assist and cooperate with each other, so that the heat flow speed of the box 1 is faster, so that the heat dissipation efficiency and heat dissipation effect of the device are further improved.

[0028] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A photovoltaic grid-connected control box with a moisture-proof and heat-resistant structure, comprising a box body (1); a cabinet door (2) is arranged on one side of an outer wall of the box body (1); ventilation slots (3) are arranged on opposite sides of the outer wall of the box body (1); a pair of filter plates (4) are fixedly connected to the inner side walls of the ventilation slots (3); the characteristics are as follows: The inner wall of the box body (1) is fixedly connected to circular tubes (5) on opposite sides, and the pair of circular tubes (5) respectively correspond to the pair of filter plates (4); the outer side walls of the pair of circular tubes (5) are fixedly connected to an upper shell (6) and a lower shell (7), and the upper shell (6) and the lower shell (7) are both connected to the circular tubes (5); the inner wall of the upper shell (6) and the lower shell (7) is fixedly connected to a baffle (8) on opposite sides through a first spring, and the outer side walls of the pair of baffles (8) are respectively slidably connected to the inner side walls of the upper shell (6) and the lower shell (7); the pair of baffles (8) match the circular tubes (5); the inner side wall of the circular tube (5) is rotatably connected to an adjustment plate (9), and the adjustment plate (9) is located between the pair of baffles (8), and the adjustment plate (9) is connected to the pair of baffles. The adjusting plate (9) matches the outer wall of the circular tube (5); the outer wall of the circular tube (5) is fixedly connected to a motor (10) via a fixing block; the output end of the motor (10) is provided with a rotating shaft (11), and one end of the outer wall of the rotating shaft (11) penetrates the outer wall of the circular tube (5) and is located in the circular tube (5); the outer wall of the rotating shaft (11) located in the circular tube (5) is fixedly connected to a first bevel gear (12); a rotating rod (13) is fixedly connected to the center of one side of the outer wall of the adjusting plate (9); the outer wall of the rotating rod (13) is fixedly connected to a second bevel gear (14), and the second bevel gear (14) and the first bevel gear (12) are meshed with each other; a temperature detection device (15) is fixedly connected to one end of the outer wall of the motor (10), and the temperature detection device (15) is electrically connected to the motor (10).

2. A photovoltaic grid-connected control box with a moisture-proof and heat-resistant structure according to claim 1, characterized in that: Rainproof pipes (16) are fixedly connected to opposite sides of the outer wall of the box body (1), and the pair of rainproof pipes (16) respectively correspond to the pair of filter plates (4); the rainproof pipe (16) is in an inverted V shape, and one end of the outer wall of the rainproof pipe (16) is inclined; the outer wall of the rainproof pipe (16) is provided with a group of waterproof holes (17), and the group of waterproof holes (17) is located at the bottom end of the outer wall of the rainproof pipe (16).

3. The photovoltaic grid-connected control box with a moisture-proof and heat-resistant structure according to claim 1, characterized in that: One end of the outer wall of the rotating rod (13) passes through the adjustment plate (9) and is located between the adjustment plate (9) and the filter plate (4); a pair of cleaning plates (18) are fixedly connected to the outer wall of the end of the rotating rod (13) located between the adjustment plate (9) and the filter plate (4), and the pair of cleaning plates (18) match the filter plate (4); a group of blowing fan blades (19) are fixedly connected to the outer wall of the end of the rotating rod (13) that does not pass through the adjustment plate (9), and the blowing fan blades (19) are located in the circular tube (5).

4. The photovoltaic grid-connected control box with a moisture-proof and heat-resistant structure according to claim 3, characterized in that: A square through slot (20) is provided on one side of the outer wall of the cleaning plate (18); a first round rod (21) and a second round rod (22) are rotatably connected to one side of the outer wall of the cleaning plate (18); an annular rack (23) is fixedly connected to the inner side wall of the circular tube; one end of the outer wall of the first round rod (21) and the second round rod (22) penetrates one side of the outer wall of the cleaning plate (18) and is located in the square through slot (20); one end of the outer wall of the first round rod (21) and the second round rod (22) located in the square through slot (20) is fixedly connected to an auxiliary plate (24), and the pair of auxiliary plates (24) match each other; a third gear (25) is fixedly connected to the outer side wall of one end of the first round rod (21) located outside the cleaning plate (18), and the third gear (25) and the annular rack (23) are meshed with each other; a fourth gear (26) is fixedly connected to the outer side wall of one end of the first round rod (21) and the second round rod (22) located outside the cleaning plate (18), and the pair of fourth gears (26) are meshed with each other.

5. The photovoltaic grid-connected control box with a moisture-proof and heat-resistant structure according to claim 4, characterized in that: A set of suction fan blades (27) are fixedly connected to the outer side walls of one end of the first round rod (21) and the second round rod (22) located outside the cleaning plate (18); a set of blowing fan blades (28) are fixedly connected to the outer side walls of one end of the first round rod (21) and the second round rod (22) located inside the square through groove (20); the two sets of blowing fan blades (28) are matched with the two sets of suction fan blades (27) respectively; a set of circular grooves (29) are formed on one side of the outer wall of the third gear (25), the fourth gear (26) and the cleaning plate (18), and the set of circular grooves (29) are matched with the two sets of blowing fan blades (28) and the two suction fan blades (27) respectively.

6. The photovoltaic grid-connected control box with a moisture-proof and heat-resistant structure according to claim 5, characterized in that: A group of heat dissipation grooves (30) are provided on one side of the outer wall of the pair of baffles (8), and the two groups of heat dissipation grooves (30) are distributed in a semicircular shape; the heat dissipation grooves (30) are in a truncated cone shape; the inner side wall of the heat dissipation groove (30) is fixedly connected to a first square plate (31); a one-way plate (32) is fixedly connected to the outer side of the first square plate (31) via a second spring, and the one-way plate (32) is located in the middle of the heat dissipation groove (30), and the one-way plate (32) matches the heat dissipation groove (30).

7. The photovoltaic grid-connected control box with a moisture-proof and heat-resistant structure according to claim 6, characterized in that: A third through slot (33) is formed on one side of the outer wall of the auxiliary plate (24); a slide plate (34) is fixedly connected to one side of the inner wall of the third through slot (33) via a third spring, and the outer wall of the slide plate (34) is slidably connected to the inner wall of the third through slot (33); a group of cleaning brushes (35) is fixedly connected to one side of the outer wall of the slide plate (34), and the group of cleaning brushes (35) matches the filter plate (4).

8. The photovoltaic grid-connected control box with a moisture-proof and heat-resistant structure according to claim 7, characterized in that: A linkage plate (36) is fixedly connected to the top of the outer wall of the baffle plate (8) in the upper shell (6), and the top of the outer wall of the linkage plate (36) penetrates the upper shell (6), and the linkage plate (36) is slidably connected to the upper shell (6); a circular rod (37) is rotatably connected to the outer wall of one end of the linkage plate (36) located outside the upper shell (6), and one end of the outer wall of the circular rod (37) penetrates the linkage plate (36); a sixth gear (38) is fixedly connected to one end of the circular rod (37) penetrating the outer wall of the linkage plate (36); sixth racks (39) are fixedly connected to the opposite sides of the inner wall of the box body (1) through third plates, and the pair of sixth racks (39) are respectively meshed with the pair of sixth gears (38); a group of three blowing fan blades (40) is fixedly connected to the outer wall of one end of the circular rod (37) that does not penetrate the linkage plate (36).

9. The photovoltaic grid-connected control box with a moisture-proof and heat-resistant structure according to claim 8, characterized in that: The linkage plate (36) is fixedly connected to a seventh gear (41) on one side of an outer wall located outside the upper shell (6), and the seventh gear (41) is sleeved on the outer side wall of the circular rod (37), and the seventh gear (41) is rotatably connected to the circular rod (37); a group of the outer walls of the three blowing blades (40) are rotatably connected to a fifth circular rod (42), and one end of the outer wall of the fifth circular rod (42) penetrates the three blowing blades (40); a group of the fifth circular rod (42) is fixedly connected to an eighth gear (43) on one end of the outer wall of the three blowing blades (40), and the group of the eighth gear (43) is meshed with the seventh gear (41); a group of the fifth circular rod (42) is fixedly connected to a group of the four blowing blades (44) on the outer side wall of one end that does not penetrate the three blowing blades (40).

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