Switch cabinet dehumidification device

Abstract

The invention relates to a dehumidification device for a switch cabinet. The dehumidification box used for containing the drying agent can be driven by the lifting table and the motor to move up and down and turn over, so that the position of the dehumidification box is adjusted, and through cooperation with the self-locking butterfly check valve, the air circulation direction in the box body is controlled. In the dehumidification state, wet air in the switch cabinet is sucked into the box body by the exhaust fan and can only enter the dehumidification box through the ventilation plate at the large end, the drying agent is concentrated at the small end of the dehumidification box, the stacking thickness is large, therefore, the better drying effect is achieved, and the dried air is fed into the switch cabinet through the exhaust pipe to achieve circulating drying. In the drying state of the drying agent, the direction of the dehumidification box is turned over, the drying agent completely falls on the large-end ventilation plate, the thickness of the drying agent is small after the drying agent is spread and stacked, drying is convenient, hot air one-way circulation is achieved through an air heater, the drying agent is dried through the dehumidification box, and moisture is discharged through a moisture discharging air pipe.

Description

Technical Field

[0001] The invention relates to the technical field of switch cabinet dehumidification, and in particular to a switch cabinet dehumidification device. Background Art

[0002] The switch cabinet is an electrical equipment. The external line of the switch cabinet first enters the main control switch in the cabinet, and then enters the sub-control switch. Each branch is set according to its needs. Such as instruments, automatic control, motor magnetic switches, various AC contactors, etc. Some also have high-voltage and low-voltage room switch cabinets, equipped with high-voltage busbars, such as power plants, etc. Some are also equipped with low-frequency load shedding to protect the main equipment. The switch cabinet operates in a semi-sealed environment and does not have a good ventilation environment. As long as high humidity weather occurs, high humidity air will continue to invade the high-voltage switch cabinet. Once high humidity air enters, it is difficult to discharge naturally. Therefore, the equipment in the high-voltage switch cabinet is damp, the insulation of the electrical appliances decreases, and safety hazards such as grounding of live equipment, discharge of live equipment to the ground, and power short circuit are caused.

[0003] The switch cabinet dehumidification device is a necessary equipment to prevent the electrical components inside the switch cabinet from short circuiting, burning and other accidents in a humid environment. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention discloses a switch cabinet dehumidification device, and the technical solution adopted is that a motor protection shell is connected to the side of the box body, a dehumidification outlet is opened on the upper front part, the upper back part of the box body is connected to an exhaust pipe, and the lower back part is connected to an exhaust pipe. An exhaust fan is installed on the exhaust pipe, and the air inlet of the exhaust fan is connected to the upper part of the inner cavity of the switch cabinet through the exhaust pipe, and the air outlet of the exhaust fan extends into the upper part of the inner cavity of the box body, and the exhaust pipe is connected to the lower part of the inner cavity of the switch cabinet, so as to realize the connection between the box body and the inner cavity of the switch cabinet. The exhaust fan can be used to draw the humid air in the switch cabinet into the box body for dehumidification treatment, and then be discharged into the switch cabinet again through the exhaust pipe, so as to realize the circulation dehumidification of the air.

[0005] The exhaust pipe is located in the inner cavity of the box body and is fixedly connected with a self-locking butterfly check valve at one end thereof. The upper part of the inner cavity of the box body and the dehumidification outlet are fixedly connected with a dehumidification air duct corresponding to the dehumidification outlet. The lower end of the dehumidification air duct is fixedly connected with a self-locking butterfly check valve. The two self-locking butterfly check valves are located in the middle of the inner cavity of the box body and are symmetrical up and down. An upper sealing top pressure plate and a lower sealing top pressure plate are fixedly connected in the middle of the inner wall of the box body. The upper sealing top pressure plate and the lower sealing top pressure plate are located between the two self-locking butterfly check valves. The distance from the upper sealing top pressure plate to the upper self-locking butterfly check valve is the same as the distance from the lower sealing top pressure plate to the lower self-locking butterfly check valve. A lifting platform is slidably installed between the upper sealing top pressure plate and the lower sealing top pressure plate. The lifting platform slidably fits on the inner wall of the box body. The box body A fixed platform is fixedly connected to the two side walls of the inner cavity, and an electric telescopic rod is fixedly connected to the fixed platform respectively. The telescopic end of the electric telescopic rod is fixedly connected to the lifting platform, and the lifting platform can be driven to move up and down in the box body by the electric telescopic rod. A motor is fixedly installed in the middle of one end of the lifting platform, and the motor is located in the motor protective shell and can move up and down in the motor protective shell with the lifting platform. The motor output shaft is fixedly connected to a dehumidification box, and the dehumidification box is rotatably installed in the middle of the lifting platform. When the lifting platform moves up to fit the upper sealing top pressure plate, the distance from the self-locking butterfly check valve installed on the moisture dehumidification air duct is the same as the distance from the self-locking butterfly check valve installed on the exhaust pipe when the lifting platform moves down to fit the lower sealing top pressure plate, thereby ensuring that the dehumidification box can be plugged and matched with the upper and lower self-locking butterfly check valves respectively.

[0006] The dehumidification box is filled with a desiccant, and the filled desiccant is a silica gel desiccant, which can be dried and reused. A hot air blower is installed at the lower front part of the box body, and the air outlet of the hot air blower is connected to the hot air duct, and the hot air duct is located under the lifting platform. The hot air generated by the hot air blower is discharged from the hot air duct and blown to the dehumidification box installed on the lifting platform, so as to dry the desiccant therein. A main control box is installed on the side of the box body, and the exhaust fan, the hot air blower, the electric telescopic rod and the motor are electrically connected to the main control box respectively. A humidity sensor is installed in the switch cabinet and is electrically connected to the main control box. The humidity in the switch cabinet is monitored in real time by the humidity sensor and fed back to the main control box. When the humidity value is too high, the main control box controls the exhaust fan to work and perform exhaust dehumidification. After dehumidification is completed, the position of the dehumidification box is adjusted by controlling the electric telescopic rod and the motor, so that it is turned over and docked with the self-locking butterfly check valve on the moisture removal air duct, and then the hot air blower is controlled to open, so as to dry the desiccant in the dehumidification box, and the moisture brought out by the hot air is discharged from the box body through the moisture removal air duct and the moisture removal outlet. After the desiccant is dried, the electric telescopic rod and the motor are controlled to adjust the position of the dehumidification box so that it is flipped and reset to the state of docking with the self-locking butterfly check valve on the exhaust pipe, waiting for the next dehumidification work.

[0007] As a preferred solution of the present invention, a self-locking buckle is installed on the side of the self-locking butterfly check valve, and the self-locking buckle includes a buckle piece that is slidably inserted into the side wall of the self-locking butterfly check valve in a U-shape, and the two ends of the buckle piece are respectively a buckle head and a pushing head, and the buckle head is buckled on the back side of the valve plate of the self-locking butterfly check valve, and the pushing head is located on the air inlet side of the self-locking butterfly check valve, and the self-locking buckle is connected to the side wall of the self-locking butterfly check valve through a spring, and the two ends of the spring are respectively fixedly connected to the middle part of the self-locking buckle and the side wall of the self-locking butterfly check valve. When the dehumidifier box is not connected to the self-locking butterfly check valve, the spring is not stretched, the buckle is in the initial position, and the buckle head is buckled on the back of the valve plate, so that the valve plate cannot be opened, and the self-locking butterfly check valve is in a locked state with no ventilation in both directions. When the dehumidifier box is inserted into the air inlet side of the self-locking butterfly check valve and the docking is completed, the dehumidifier box will press the pushing head to push the buckle outward, and the spring will be stretched to disengage the buckle head from the valve plate, so that the valve plate can be opened to achieve one-way ventilation. When the ventilation is stopped and the valve plate is reset, the dehumidifier box is disengaged from the self-locking butterfly check valve, and the buckle is pulled back to the initial position under the restoring force of the spring, and the buckle head is buckled on the back of the valve plate again to lock the valve plate, so that the self-locking butterfly check valve cannot be ventilated.

[0008] As a preferred solution of the present invention, push-pull frames are fixedly connected at both ends of the lifting platform, a hole is opened in the middle and the dehumidification box is rotatably installed therein, the telescopic end of the electric telescopic rod is fixedly connected to the push-pull frame, and a first sealing ring and a second sealing ring are fixedly connected around the upper and lower edges of the hole in the middle of the lifting platform. The first sealing ring and the second sealing ring are respectively attached to the upper and lower surfaces of the dehumidification box to seal the gap between the dehumidification box and the lifting platform. The first sealing ring and the second sealing ring are made of rubber, and the flexible material can effectively achieve a sealing effect and will not affect the rotation of the dehumidification box on the lifting platform.

[0009] As a preferred solution of the present invention, the dehumidification box is funnel-shaped, and its large port is covered with a large-end ventilation plate, and its small port is covered with a small-end ventilation plate. A rotating shaft is fixedly connected to the middle of both ends of the large port of the dehumidification box, and is rotatably mounted in the middle opening of the lifting platform through the rotating shaft. The vertical distance from the small-end ventilation plate to the rotating shaft is less than half the width of the large port of the dehumidification box, so that the dehumidification box can be flipped in the middle opening of the lifting platform, and the small port of the dehumidification box will not be blocked at the opening. When the dehumidifier box is flipped to the small end facing downward and connected to the self-locking butterfly check valve on the exhaust pipe, it is in the dehumidification state. The self-locking butterfly check valve on the exhaust pipe is in the one-way passage state. The self-locking butterfly check valve on the moisture exhaust air duct is not connected to the dehumidifier box, but is in a two-way locked state. The desiccant is all at the small end of the dehumidifier box and is drawn into the box by the exhaust fan. The wet air cannot enter the moisture exhaust air duct and can only enter the dehumidifier box through the large end ventilation plate. After being dried by the desiccant, it is discharged from the small end ventilation plate and enters the exhaust pipe and is sent to the switch cabinet. When the dehumidifier box is flipped to the small end facing upward and connected with the self-locking butterfly check valve on the moisture removal air duct, the desiccant is in a drying state, the self-locking butterfly check valve on the moisture removal air duct is in a one-way passage state, and the self-locking butterfly check valve on the exhaust pipe is not connected with the dehumidifier box, but is in a two-way locked state. All the desiccant falls on the large-end ventilation plate, spreads out and accumulates thinly, which is convenient for drying. At this time, hot air is generated by the hot air blower and blows hot air from bottom to top through the hot air pipe. The hot air cannot enter the exhaust pipe, but can only enter the dehumidifier box through the large-end ventilation plate, dry the spread desiccant, and be discharged from the small-end ventilation plate, and enter the moisture removal air duct to discharge moisture from the moisture removal outlet.

[0010] Beneficial effects of the present invention: the dehumidification box designed by the present invention for placing desiccant can be moved up and down and turned over by the lifting platform and the motor, so as to adjust the position of the dehumidification box, and the air flow direction inside the box can be controlled by cooperating with the self-locking butterfly check valve. In the dehumidification state, the humid air in the switch cabinet is drawn into the box by the exhaust fan, and can only enter the dehumidification box through the large end ventilation plate, while the desiccant is concentrated at the small end of the dehumidification box, and the accumulation thickness is thick, so it has a better drying effect. The dried air is sent into the switch cabinet through the exhaust pipe to achieve cyclic drying. In the desiccant drying state, the dehumidification box flips the direction, and the desiccant all falls on the large end ventilation plate, spreads out and has a thin accumulation thickness, which is convenient for drying. The hot air blower is used to realize the one-way circulation of hot air, and the desiccant is dried through the dehumidification box, and the moisture is discharged through the dehumidification air duct. The whole device realizes dehumidification of the desiccant and reuse of the desiccant, and there is no need to frequently replace the desiccant, which ensures the dehumidification effect, improves the dehumidification efficiency, and saves costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0012] Figure 2 It is a first cross-sectional view of the overall internal structure of the present invention;

[0013] Figure 3 It is a second cross-sectional view of the overall internal structure of the present invention;

[0014] Figure 4 It is a cross-sectional view of the internal structure of the box body of the present invention;

[0015] Figure 5 It is a cross-sectional view of the internal structure of the self-locking butterfly check valve of the present invention;

[0016] Figure 6 It is a schematic diagram of the overall structure of the lifting platform and the dehumidification box of the present invention;

[0017] Figure 7 It is a schematic diagram of the lifting platform structure of the present invention;

[0018] Figure 8 It is a schematic diagram of the structure of the dehumidification box of the present invention;

[0019] Fig. 9 It is a schematic diagram of the installation status of the dehumidification device and the switch cabinet of the present invention.

[0020] In the figure: 1 box body, 101 motor protection shell, 102 moisture exhaust outlet, 103 upper sealing top pressure plate, 104 lower sealing top pressure plate, 105 fixed platform, 2 exhaust pipe, 3 exhaust pipe, 4 exhaust fan, 5 hot air fan, 6 main control box, 7 moisture exhaust air duct, 8 self-locking butterfly check valve, 801 self-locking buckle, 8011 buckle, 8012 buckle head, 8013 push head, 8014 spring, 802 valve plate, 9 lifting platform, 901 push-pull frame, 902 first sealing ring, 903 second sealing ring, 10 hot air duct, 11 electric telescopic rod, 12 dehumidification box, 1201 large end ventilation plate, 1202 small end ventilation plate, 1203 shaft, 13 motor, 14 switch cabinet. DETAILED DESCRIPTION

[0021] Example 1

[0022] like Figures 1 to 9As shown, a switch cabinet dehumidification device of the present invention is connected to a motor protection shell 101 on the side of the box body 1, a dehumidification outlet 102 is opened on the upper front part, the upper back part of the box body 1 is connected to an exhaust pipe 2, and the lower back part is connected to an exhaust pipe 3, an exhaust fan 4 is installed on the exhaust pipe 2, the air inlet of the exhaust fan 4 is connected to the upper part of the inner cavity of the switch cabinet 14 through the exhaust pipe 2, the air outlet of the exhaust fan 4 extends into the upper part of the inner cavity of the box body 1, and the exhaust pipe 3 is connected to the lower part of the inner cavity of the switch cabinet 14, so as to realize the connection between the box body 1 and the inner cavity of the switch cabinet 14, and the humid air in the switch cabinet 14 can be drawn into the box body 1 by the exhaust fan 4 for dehumidification treatment, and then discharged into the switch cabinet 14 again through the exhaust pipe 3, so as to realize the circulation dehumidification of the air.

[0023] The exhaust pipe 3 is located at one end of the inner cavity of the box body 1 and is fixedly connected to a self-locking butterfly check valve 8. The upper part of the inner cavity of the box body 1 is fixedly connected to a dehumidification air duct 7 corresponding to the dehumidification air outlet 102. The lower end of the dehumidification air duct 7 is fixedly connected to a self-locking butterfly check valve 8. The two self-locking butterfly check valves 8 are located in the middle of the inner cavity of the box body 1 and are symmetrical up and down. The middle of the inner side wall of the box body 1 is fixedly connected to an upper sealing top pressure plate 103 and a lower sealing top pressure plate 104. The upper sealing top pressure plate 103 and the lower sealing top pressure plate 104 are located at the two self-locking butterfly check valves. The distance between the upper sealing top pressure plate 103 and the upper self-locking butterfly check valve 8 is the same as the distance between the lower sealing top pressure plate 104 and the lower self-locking butterfly check valve 8. A lifting platform 9 is slidably installed between the upper sealing top pressure plate 103 and the lower sealing top pressure plate 104. The lifting platform 9 is slidably fitted on the inner wall of the box body 1. Fixed platforms 105 are fixedly connected to the two side walls of the inner cavity of the box body 1. The fixed platforms 105 are respectively fixedly connected to electric telescopic rods 11. The telescopic ends of the electric telescopic rods 11 are fixedly connected to the lifting platforms 105. On the lowering platform 9, the lifting platform 9 can be driven to move up and down in the box 1 through the electric telescopic rod 11. A motor 13 is fixedly installed in the middle of one end of the lifting platform 9. The motor 13 is located in the motor protective shell 101 and can move up and down in the motor protective shell 101 with the lifting platform 9. The output shaft of the motor 13 is fixedly connected with a dehumidification box 12, and the dehumidification box 12 is rotatably installed in the middle of the lifting platform 9. The two ends of the lifting platform 9 are fixedly connected with a push-pull frame 901, the middle of which is opened and the dehumidification box 12 is rotatably installed therein. The telescopic end of the electric telescopic rod 11 is fixedly connected to the dehumidification box 12. It is fixedly connected to the push-pull frame 901, and is used to drive the lifting and lowering movement of the lifting platform 9. The upper and lower edges of the central opening of the lifting platform 9 are fixedly connected with a first sealing ring 902 and a second sealing ring 903. The first sealing ring 902 and the second sealing ring 903 are respectively attached to the upper and lower surfaces of the dehumidification box 12 to seal the gap between the dehumidification box 12 and the lifting platform 9. The first sealing ring 902 and the second sealing ring 903 are made of rubber material. The flexible material can effectively achieve a sealing effect and will not affect the rotation of the dehumidification box 12 on the lifting platform 9.

[0024] When the lifting platform 9 moves up to fit the upper sealing top pressure plate 103, the distance from the self-locking butterfly check valve 8 installed on the dehumidification air duct 7 is the same as the distance from the self-locking butterfly check valve 8 installed on the exhaust pipe 3 when the lifting platform 9 moves down to fit the lower sealing top pressure plate 104. The lifting platform 9 is driven by the extension and retraction of the electric telescopic rod 1 to drive the dehumidification box 12 to move up and down. After disengaging from the self-locking butterfly check valve 8, the dehumidification box 12 is turned over by the motor 13, and then the lifting platform 9 drives the dehumidification box 12 to move, and it can be connected to another self-locking butterfly check valve 8, thereby ensuring that the dehumidification box 12 can be plugged and matched with the upper and lower two self-locking butterfly check valves 8 respectively.

[0025] A self-locking buckle 801 is installed on the side of the self-locking butterfly check valve 8, and the self-locking buckle 801 includes a fastener 8011 that is U-shaped and slidably inserted into the side wall of the self-locking butterfly check valve 8, and the two ends of the fastener 8011 are respectively a fastener head 8012 and a pushing head 8013, the fastener head 8012 is fastened to the back side of the valve plate 802 of the self-locking butterfly check valve 8, and the pushing head 8013 is located on the air inlet side of the self-locking butterfly check valve 8, and the self-locking buckle 801 is connected to the side wall of the self-locking butterfly check valve 8 through a spring 8014, and the two ends of the spring 8014 are respectively fixedly connected to the middle part of the self-locking buckle 801 and the side wall of the self-locking butterfly check valve 8. When the dehumidifier box 12 is not connected to the self-locking butterfly check valve 8, the spring 8014 is not stretched, the buckle 8011 is in the initial position, the buckle head 8012 is buckled on the back of the valve plate 802, so that the valve plate 802 cannot be opened, and the self-locking butterfly check valve 8 is in a locked state with no ventilation in both directions. When the dehumidifier box 12 is inserted into the air inlet side of the self-locking butterfly check valve 8 and the docking is completed, the dehumidifier box 12 will press the pushing head 8013 to push the buckle 8011 outward, and the spring 8014 will push the buckle 8011 outward. The spring 8014 is stretched, so that the snap head 8012 is disengaged from the valve plate 802, so that the valve plate 802 can be opened to achieve one-way ventilation. After the ventilation is stopped, the valve plate 802 is reset, and the dehumidification box 12 is disengaged from the self-locking butterfly check valve 8. Under the action of the restoring force of the spring 8014, the snap part 8011 is pulled back to the initial position, and the snap head 8012 is again snapped onto the back of the valve plate 802, locking the valve plate 802 and preventing the self-locking butterfly check valve 8 from ventilating.

[0026] The dehumidification box 12 is filled with a desiccant, and the filled desiccant is a silica gel desiccant, which can be dried and reused. A hot air blower 5 is installed at the lower front of the box body 1, and the air outlet of the hot air blower 5 is connected to the hot air pipe 10, and the hot air pipe 10 is located below the lifting platform 9. The hot air generated by the hot air blower 5 is discharged from the hot air pipe 10 and blown to the dehumidification box 12 installed on the lifting platform 9. The dehumidifier box 12 is funnel-shaped, and its large port is covered with a large-end ventilation plate 1201, and its small port is covered with a small-end ventilation plate 1202. A rotating shaft 1203 is fixedly connected in the middle of both ends of the large port of the dehumidifier box 12, and is rotatably mounted in the middle opening of the lifting platform 9 through the rotating shaft 1203. The vertical distance from the small-end ventilation plate 1202 to the rotating shaft 1203 is less than half the width of the large port of the dehumidifier box 12, so that the dehumidifier box 12 can be flipped in the middle opening of the lifting platform 9, and the small port of the dehumidifier box 12 will not be blocked at the opening. When the dehumidification box 12 is flipped to the small end facing downward and connected to the self-locking butterfly check valve 8 on the exhaust pipe 3, it is in a dehumidification state. The self-locking butterfly check valve 8 on the exhaust pipe 3 is in a one-way passage state. The self-locking butterfly check valve 8 on the dehumidification air duct 7 is not connected to the dehumidification box 12, but is in a two-way locked state. The desiccant is all in the small end of the dehumidification box 12 and is drawn into the box body 1 by the exhaust fan 4. The humid air cannot enter the dehumidification air duct 7 and can only enter the dehumidification box 12 through the large end ventilation plate 1201. After being dried by the desiccant, it is discharged from the small end ventilation plate 1202, enters the exhaust pipe 3 and is sent into the switch cabinet 14. When the dehumidifier box 12 is flipped to the small end facing upward and connected with the self-locking butterfly check valve 8 on the moisture removal air duct 7, the desiccant is in a drying state at this time, the self-locking butterfly check valve 8 on the moisture removal air duct 7 is in a one-way passage state, and the self-locking butterfly check valve 8 on the exhaust pipe 3 is not connected with the dehumidifier box 12, but is in a two-way locked state. The desiccant all falls on the large-end ventilation plate 1201, spreads out and has a thin stacking thickness, which is convenient for drying. At this time, the hot air generated by the hot air blower 5 blows hot air from bottom to top through the hot air pipe 10. The hot air cannot enter the exhaust pipe 3, and can only enter the dehumidifier box 12 through the large-end ventilation plate 1201, dry the spread desiccant, and discharge it from the small-end ventilation plate 1202, and enter the moisture removal air duct 7 to discharge moisture from the moisture removal outlet 102.

[0027] A main control box 6 is installed on the side of the box body 1, and the exhaust fan 4, the hot air blower 5, the electric telescopic rod 11 and the motor 13 are electrically connected to the main control box 6 respectively. A humidity sensor is installed in the switch cabinet 14 and is electrically connected to the main control box 6. The humidity sensor is used to monitor the air humidity in the switch cabinet 14 in real time and feed back to the main control box 6. When the humidity value is too high, the main control box 6 controls the exhaust fan 4 to work and perform exhaust dehumidification. After dehumidification is completed, the position of the dehumidification box 12 is adjusted by controlling the electric telescopic rod 11 and the motor 13, so that it is turned over and docked with the self-locking butterfly check valve 8 on the dehumidification air duct 7, and then the hot air blower 5 is controlled to open, so as to dry the desiccant in the dehumidification box 12, and the moisture brought out by the hot air is discharged from the box body 1 through the dehumidification air duct 7 through the dehumidification outlet 102. After the desiccant is dried, the electric telescopic rod 11 and the motor 13 are controlled to adjust the position of the dehumidification box 12, so that it is flipped and reset to the state of docking with the self-locking butterfly check valve 8 on the exhaust pipe 3, waiting for the next dehumidification work.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal connection of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0030] Components and circuit connections not described in detail herein are prior art.

[0031] Although the specific embodiments of the present invention are described in detail above, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in this field without departing from the purpose of the present invention, and modifications or deformations without creative labor are still within the protection scope of the present invention.

Claims

1. A switch cabinet dehumidification device, characterized in that: The invention comprises a box body (1), wherein the side of the box body (1) is connected to a motor protection shell (101), a moisture-removing air outlet (102) is provided at the upper front part, the upper back part of the box body (1) is connected to an air extraction pipe (2), and the lower back part is connected to an exhaust pipe (3), an exhaust fan (4) is installed on the exhaust pipe (2), one end of the exhaust pipe (3) located in the inner cavity of the box body (1) is fixedly connected to a self-locking butterfly check valve (8), and the upper inner cavity of the box body (1) is fixedly connected to a moisture-removing air pipe corresponding to the moisture-removing air outlet (102). (7), a self-locking butterfly check valve (8) is fixedly connected at the lower end of the dehumidification air duct (7), and the two self-locking butterfly check valves (8) are located in the middle of the inner cavity of the box body (1) and are symmetrical up and down. An upper sealing top pressure plate (103) and a lower sealing top pressure plate (104) are fixedly connected in the middle of the inner side wall of the box body (1), and the upper sealing top pressure plate (103) and the lower sealing top pressure plate (104) are located between the two self-locking butterfly check valves (8). A sliding device is installed between the upper sealing top pressure plate (103) and the lower sealing top pressure plate (104). A lifting platform (9) is provided, the lifting platform (9) is slidably fitted on the inner wall of the box body (1), fixed platforms (105) are fixedly connected to the two side walls of the inner cavity of the box body (1), the fixed platforms (105) are respectively fixedly connected to electric telescopic rods (11), the telescopic ends of the electric telescopic rods (11) are fixedly connected to the lifting platform (9), a motor (13) is fixedly installed in the middle of one end of the lifting platform (9), the motor (13) is located in the motor protective shell (101), and the output shaft of the motor (13) is fixedly connected to a dehumidification box (12), the dehumidification box (12) is rotatably mounted in the middle of the lifting platform (9), the dehumidification box (12) is filled with desiccant, a hot air blower (5) is installed at the lower front of the box body (1), the air outlet of the hot air blower (5) is connected to the hot air pipe (10), and the hot air pipe (10) is located below the lifting platform (9), a main control box (6) is installed on the side of the box body (1), and the exhaust fan (4), the hot air blower (5), the electric telescopic rod (11) and the motor (13) are respectively electrically connected to the main control box (6).

2. A switch cabinet dehumidification device according to claim 1, characterized in that: The distance from the upper sealing top pressure plate (103) to the upper self-locking butterfly check valve (8) is the same as the distance from the lower sealing top pressure plate (104) to the lower self-locking butterfly check valve (8).

3. A switch cabinet dehumidification device according to claim 1, characterized in that: The air inlet of the exhaust fan (4) is connected to the upper part of the inner cavity of the switch cabinet (14) through the exhaust pipe (2), the air outlet of the exhaust fan (4) extends into the upper part of the inner cavity of the box body (1), and the exhaust pipe (3) is connected to the lower part of the inner cavity of the switch cabinet (14). A humidity sensor is installed in the switch cabinet (14) and is electrically connected to the main control box (6).

4. A switch cabinet dehumidification device according to claim 1, characterized in that: A self-locking buckle (801) is installed on the side of the self-locking butterfly check valve (8), and the self-locking buckle (801) includes a buckle piece (8011) that is slidably plugged into the side wall of the self-locking butterfly check valve (8) in a U-shape, and the two ends of the buckle piece (8011) are respectively a buckle head (8012) and a push head (8013), and the buckle head (8012) is buckled on the back of the valve plate (802) of the self-locking butterfly check valve (8), and the push head (8013) is located on the air inlet side of the self-locking butterfly check valve (8), and the self-locking buckle (801) and the side wall of the self-locking butterfly check valve (8) are connected via a spring (8014), and the two ends of the spring (8014) are respectively fixedly connected to the middle part of the self-locking buckle (801) and the side wall of the self-locking butterfly check valve (8).

5. A switch cabinet dehumidification device according to claim 1, characterized in that: The lifting platform (9) is fixedly connected to a push-pull frame (901) at both ends, and has a hole in the middle in which the dehumidification box (12) is rotatably installed. The telescopic end of the electric telescopic rod (11) is fixedly connected to the push-pull frame (901). The first sealing ring (902) and the second sealing ring (903) are fixedly connected around the upper and lower edges of the hole in the middle of the lifting platform (9). The first sealing ring (902) and the second sealing ring (903) are respectively attached to the upper and lower surfaces of the dehumidification box (12).

6. A switch cabinet dehumidification device according to claim 5, characterized in that: The first sealing ring (902) and the second sealing ring (903) are made of rubber material.

7. A switch cabinet dehumidification device according to claim 5, characterized in that: The dehumidification box (12) is funnel-shaped, and its large end is covered with a large end ventilation plate (1201), and its small end is covered with a small end ventilation plate (1202). A rotating shaft (1203) is fixedly connected in the middle of both ends of the large end of the dehumidification box (12), and is rotatably mounted in the middle opening of the lifting platform (9) through the rotating shaft (1203). The vertical distance from the small end ventilation plate (1202) to the rotating shaft (1203) is less than half the width of the large end of the dehumidification box (12).

8. The switch cabinet dehumidification device according to claim 1, characterized in that: The desiccant filled in the dehumidification box (12) is a silica gel desiccant.

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