Energy-saving explosion-proof switch box

Abstract

The invention relates to the technical field of switch boxes, and discloses an energy-saving type explosion-proof switch box, which comprises an explosion-proof box body, and an electronic device is arranged in the explosion-proof box body; the heat dissipation unit is arranged on the side face of the anti-explosion box body and used for ventilating and cooling the interior of the anti-explosion box body, and a dust removal assembly is arranged on the heat dissipation unit and used for filtering and removing dust from environment gas; the environment monitoring unit comprises a temperature sensor and a dust concentration sensor, the temperature sensor is used for detecting the temperature in the explosion-proof box body, the dust concentration sensor is used for detecting the dust concentration in the external environment, and the controller regulates and controls the heat dissipation unit according to the detection result of the environment monitoring unit. According to the invention, environment monitoring data are integrated, and the controller starts the heat dissipation unit and carries out regulation and control, so that heat in the explosion-proof box body is better dissipated, the temperature environment in the explosion-proof box body is adjusted, energy loss in the switch box caused by too high temperature is avoided, and the heat dissipation and energy saving effects of the switch box are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of switch boxes, and more specifically, to an energy-saving explosion-proof switch box. Background Art

[0002] Explosion-proof switch boxes are mainly used to control and protect circuits, and to prevent sparks or arcs generated by electrical equipment from causing explosions in environments that may contain flammable and explosive gases, vapors, and dust. The working principle of an explosion-proof switch box is mainly based on its explosion-proof structural design and the selection of electrical components. It uses explosion-proof structures such as flameproof or increased safety types, and encapsulates electrical components in an explosion-proof housing to prevent sparks or arcs generated by electrical equipment during operation from directly contacting flammable and explosive substances outside. At the same time, the explosion-proof switch box is also equipped with various protective components such as circuit breakers, thermal relays, etc. to ensure the safe operation of the circuit.

[0003] In the prior art, for example, the patent with application number CN202223404604.1 discloses a low-energy flameproof mobile substation for mining, including a substation body, a cooling mechanism is arranged on the top of the substation body, the cooling mechanism includes a heat dissipation channel, support plates are fixedly connected to both sides of the top of the substation body, and electric telescopic rods are rotatably connected to the opposite sides of the inner walls of the two support plates. The low-energy flameproof mobile substation for mining is provided with a cooling mechanism on the top of the substation body. When the temperature sensor detects that the internal temperature of the substation is too high, the electric telescopic rod drives the two sealing plates to move in opposite directions, opens the heat dissipation channel, cooperates with the rotation of the fan, accelerates the transfer of heat from the internal air, and can conduct the heat in the substation out, quickly cool down the substation, prevent damage to the internal electrical components, save energy efficiently, and avoid explosion accidents.

[0004] This device detects the temperature inside the mobile substation (or switch box) through a temperature sensor to control the operation of the heat dissipation component. However, during heat dissipation, due to the high dust content in the mining environment, the dust carried by the airflow enters the switch box, causing the electronic components to heat up, greatly increasing the risk of explosion.

[0005] Therefore, it is necessary to propose an energy-saving explosion-proof switch box to at least partially solve the problems existing in the prior art. Summary of the invention

[0006] A series of simplified concepts are introduced in the Summary of the Invention, which will be further described in detail in the Detailed Description of the Invention. The Summary of the Invention does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the scope of protection of the claimed technical solution.

[0007] In order to at least partially solve the above problems, the present invention provides an energy-saving explosion-proof switch box, comprising:

[0008] An explosion-proof box, in which electronic devices are arranged;

[0009] The heat dissipation unit is arranged on the side of the explosion-proof box and is used for ventilation and cooling inside the explosion-proof box. A dust removal component is arranged on the heat dissipation unit and is used for filtering and dust removal of ambient gas;

[0010] The environmental monitoring unit includes a temperature sensor and a dust concentration sensor. The temperature sensor is used to detect the temperature inside the explosion-proof box, and the dust concentration sensor is used to detect the dust concentration in the external environment. The controller adjusts the heat dissipation unit according to the detection results of the environmental monitoring unit.

[0011] Preferably, the heat dissipation unit comprises:

[0012] The heat sink is arranged on one side of the explosion-proof box, and a plurality of one-way air outlet holes are evenly arranged on the heat sink;

[0013] A cooling fan is connected to the inner wall of the other side of the explosion-proof box, and a protective cover is arranged on the outside of the cooling fan;

[0014] The fan is connected to the outside of the explosion-proof box. The fan sucks in the gas in the environment through the pipeline and transports it to the cooling fan inside the explosion-proof box.

[0015] Preferably, the heat dissipation unit further comprises:

[0016] A control box body, the control box body is connected to the outer wall of the explosion-proof box body, the control box body is provided with an installation cavity and an air inlet cavity arranged up and down, the air inlet cavity includes a first air inlet cavity and a second air inlet cavity arranged on the left and right, the first air inlet cavity and the second air inlet cavity are separated by a vertically arranged partition plate; the first air inlet cavity and the second air inlet cavity are both provided with air inlets, the dust removal assembly is arranged at the air inlets of the first air inlet cavity and the second air inlet cavity, and the air outlet end of the control box body is connected to the pipeline;

[0017] A switching component is used to control the air intake state of the first air intake cavity and the second air intake cavity.

[0018] Preferably, the controller regulates the heat dissipation unit according to the detection result of the temperature sensor, specifically:

[0019] When the temperature inside the explosion-proof box is greater than the preset temperature value, the blower and cooling fan are started.

[0020] Preferably, the controller regulates the heat dissipation unit according to the detection result of the dust concentration sensor, specifically:

[0021] When the dust concentration in the external environment is less than a preset dust concentration value, the switching component is started to set the first air inlet cavity to an air inlet state and the second air inlet cavity to a blocked state;

[0022] When the dust concentration in the external environment is greater than a preset dust concentration value, the switching component is started to set both the first air inlet cavity and the second air inlet cavity to an air inlet state.

[0023] Preferably, the controller evaluates the performance of the heat dissipation unit, specifically: determining the relationship between the dust concentration in the external environment and the heat dissipation performance, that is, fitting and analyzing the data based on the detection result of the dust concentration in the external environment by the dust concentration sensor, and the relationship between the time required for each unit temperature reduction, and predicting the cooling time under different dust concentration conditions; when the difference between the actual time required to reduce the unit temperature and the predicted time exceeds a preset range, it indicates that the performance of the heat dissipation unit is low and the heat dissipation unit needs to be overhauled.

[0024] Preferably, a first dust removal assembly is provided in the first air inlet chamber, and the first dust removal assembly includes:

[0025] A bellows, the bellows is installed at the air inlet at the top of the first air inlet cavity, and the bellows is located in the installation cavity;

[0026] A support plate, the support plate is connected to the top of the bellows;

[0027] Filter cover: The filter cover is installed in the center of the bellows.

[0028] Preferably, the filter cover comprises an upper closed section and a lower filter mesh section, wherein the filter mesh section is located in the bellows, and the closed section is slidably connected to the air inlet at the top end of the explosion-proof box.

[0029] Preferably, a second dust removal assembly is provided in the second air inlet chamber, and the second dust removal assembly includes:

[0030] A conical tube, the conical tube is installed at the air inlet on the side of the second air inlet cavity, the diameter of the conical tube on one side close to the air inlet is larger than the other side, and both ends of the conical tube are opened;

[0031] A sphere, which is arranged at the center of the conical tube;

[0032] A telescopic support rod, wherein a plurality of telescopic support rods are evenly connected to the sphere, the other end of the telescopic support rod is connected to the inner wall of the conical tube, and a side of the telescopic support rod close to the air inlet of the second air inlet cavity is connected with a flexible filter screen.

[0033] Preferably, the switching component comprises:

[0034] A switch box, the switch box is connected to the partition plate;

[0035] A first piston plate and a second piston plate, the first piston plate and the second piston plate are slidably arranged inside the switching box, the first piston rod on the first piston plate is connected to the first dust removal assembly, the second piston rod on the second piston plate extends into the tapered tube and is connected to the ball, and the second piston rod is connected to a blocking plate adapted to the end of the tapered tube;

[0036] A rack connected between the first piston plate and the second piston plate;

[0037] The gear is rotatably connected to the inner wall of the switching box, and the gear shaft is connected to the output shaft of the driving motor, and the bottom end of the gear is meshed with the rack.

[0038] Preferably, the switching component further includes:

[0039] A connecting pipeline, the connecting pipeline includes a first pipeline at the bottom and two second pipelines at the top, the first pipeline is arranged horizontally, the second pipeline is arranged vertically, the first piston rod extends into the first pipeline and is connected to the sealing plate, a third piston rod is arranged vertically in the installation cavity, the bottom of the third piston rod extends into the second pipeline and is connected to the sealing plate, and the sealing plate is slidably arranged in the connecting pipeline;

[0040] The middle part of the rotating rod is hinged to the inner wall of the installation cavity, one end of the rotating rod is hinged to the top end of the third piston rod, and the other end is hinged to the support plate, and a waist-shaped hole is arranged at the hinge.

[0041] Preferably, the partition plate extends into the air outlet pipeline at the bottom end of the regulating box, the air outlet pipeline is connected to the pipeline, and the two sides of the air outlet pipeline are respectively connected to the first air inlet cavity and the second air inlet cavity;

[0042] Two cylinders are arranged at intervals on the partition plate, a connecting hole is arranged between the two cylinders, a semi-cylinder is arranged on the air outlet pipe, and the position of the semi-cylinder corresponds to the connecting hole, and an air flow channel is formed between the cylinder and the semi-cylinder.

[0043] Compared with the prior art, the present invention has at least the following beneficial effects:

[0044] The present invention provides an energy-saving explosion-proof switch box, which isolates internal electronic devices from the external environment by providing an explosion-proof box body, thereby preventing dust and flammable gases in the external environment from entering the box body and causing explosions when leakage occurs; an environmental monitoring unit is provided on the explosion-proof box body 1, and a temperature sensor is used to detect the internal temperature of the explosion-proof box body, that is, to monitor the internal temperature environment of the explosion-proof box body 1; a dust concentration sensor is used to detect the dust concentration in the external environment, that is, to monitor the dust environment outside the explosion-proof box body; based on the comprehensive environmental monitoring data, the controller starts the heat dissipation unit and performs regulation to better dissipate the heat in the explosion-proof box body, adjust the temperature environment in the explosion-proof box body, avoid energy loss in the switch box caused by excessive temperature, and improve the heat dissipation and energy-saving effects of the switch box.

[0045] The energy-saving explosion-proof switch box described in the present invention, other advantages, objectives and features of the present invention will be partially reflected through the following description, and will also be partially understood by technicians in this field through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0047] Figure 1 It is a structural schematic diagram of the explosion-proof box in the present invention;

[0048] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention;

[0049] Figure 3 It is a schematic diagram of the cross-sectional structure of the control box in the present invention;

[0050] Figure 4 is a schematic cross-sectional structure diagram of the first dust removal component in the present invention;

[0051] Figure 5 is a schematic cross-sectional structure diagram of the second dust removal component in the present invention;

[0052] Figure 6 is a schematic cross-sectional structural diagram of a switching component in the present invention;

[0053] Figure 7 It is a schematic diagram of the structure inside the switching component of the present invention;

[0054] Figure 8 It is a structural schematic diagram of the lower part of the partition plate in the present invention.

[0055] In the figure: 1. explosion-proof box; 11. heat sink; 12. cooling fan; 13. protective cover; 14. fan; 15. pipeline; 21. control box; 22. installation cavity; 23. first air inlet cavity; 24. second air inlet cavity; 25. partition plate; 31. bellows; 32. support plate; 33. filter cover; 34. conical tube; 35. sphere; 36. telescopic support rod; 41. switching box; 42. first piston plate; 43. second piston plate; 44. first piston rod; 45. second piston rod; 46. blocking plate; 47. rack; 48. gear; 51. first pipeline; 52. second pipeline; 53. third piston rod; 54. rotating rod; 26. exhaust pipeline; 27. cylinder; 28. connecting hole; 29. ​​semi-cylinder. DETAILED DESCRIPTION

[0056] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments so that those skilled in the art can implement the invention with reference to the description.

[0057] It should be understood that the terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or more other elements or combinations thereof.

[0058] Embodiment 1:

[0059] like Figure 1 As shown, the present invention provides an energy-saving explosion-proof switch box, comprising:

[0060] An explosion-proof box 1, wherein electronic devices are arranged in the explosion-proof box 1;

[0061] A heat dissipation unit is arranged on the side of the explosion-proof box 1 and is used for ventilating and cooling the inside of the explosion-proof box 1. A dust removal component is arranged on the heat dissipation unit and is used for filtering and removing dust from the ambient gas.

[0062] The environmental monitoring unit includes a temperature sensor and a dust concentration sensor. The temperature sensor is used to detect the temperature inside the explosion-proof box 1, and the dust concentration sensor is used to detect the dust concentration in the external environment. The controller adjusts the heat dissipation unit according to the detection results of the environmental monitoring unit.

[0063] The working principle and beneficial effects of the above technical solution are:

[0064] An energy-saving explosion-proof switch box is provided, which isolates internal electronic devices from the external environment by providing an explosion-proof box body 1, thereby preventing dust and flammable gas in the external environment from entering the box body 1 and causing an explosion when leakage occurs; an environment monitoring unit is provided on the explosion-proof box body 1, and a temperature sensor is used to detect the internal temperature of the explosion-proof box body 1, that is, to monitor the internal temperature environment of the explosion-proof box body 1; a dust concentration sensor is used to detect the dust concentration in the external environment, that is, to monitor the external dust environment of the explosion-proof box body 1; based on the comprehensive environment monitoring data, a controller starts a heat dissipation unit and performs regulation and control, so that the heat in the explosion-proof box body 1 can be better dissipated, and the temperature environment in the explosion-proof box body 1 can be adjusted to avoid energy loss in the switch box caused by excessive temperature, thereby improving the heat dissipation and energy-saving effects of the switch box.

[0065] Embodiment 2:

[0066] like Figure 2 As shown, based on the above embodiment 1, the heat dissipation unit includes:

[0067] The heat sink 11 is arranged on one side of the explosion-proof box 1, and a plurality of one-way air outlet holes are evenly arranged on the heat sink 11;

[0068] A cooling fan 12, the cooling fan 12 is connected to the inner wall of the other side of the explosion-proof box 1, and a protective cover 13 is arranged on the outer side of the cooling fan 12;

[0069] The fan 14 is connected to the outside of the explosion-proof box 1 . The fan 14 sucks the gas in the environment through the pipeline 15 and transports it to the cooling fan 11 inside the explosion-proof box 1 .

[0070] The working principle and beneficial effects of the above technical solution are:

[0071] When the heat dissipation unit is in use, the blower 14 and the heat dissipation fan 12 are started, the blower 14 guides the gas in the external environment to the heat dissipation fan 12, and the heat dissipation fan 12 rotates to generate airflow, which flows inside the explosion-proof box 1, carrying the heat on the electronic components and flowing out through the one-way air outlet on the heat dissipation plate 11; the heat dissipation fan 12 increases the air circulation speed inside the explosion-proof box 1, thereby improving the heat dissipation and cooling effect.

[0072] Embodiment 3:

[0073] like Figure 2 , 3 As shown, based on the above embodiment 2, the heat dissipation unit further includes:

[0074] A control box 21 is connected to the outer wall of the explosion-proof box 1. The control box 21 is provided with an installation cavity 22 and an air inlet cavity arranged up and down. The air inlet cavity includes a first air inlet cavity 23 and a second air inlet cavity 24 arranged on the left and right. The first air inlet cavity 23 and the second air inlet cavity 24 are separated by a vertically arranged partition plate 25; the first air inlet cavity 23 and the second air inlet cavity 24 are both provided with air inlets, and the dust removal assembly is arranged at the air inlets of the first air inlet cavity 23 and the second air inlet cavity 24. The air outlet end of the control box 21 is connected to the pipeline 15;

[0075] A switching component is used to control the air intake state of the first air intake chamber 23 and the second air intake chamber 24 .

[0076] The working principle and beneficial effects of the above technical solution are:

[0077] A control box 21 is provided on the heat dissipation unit, and the control box 21 is connected to the air inlet end of the fan 14. Under the suction action of the fan 14, the air in the external environment first enters the control box 21. The control box 21 is provided with two air inlet chambers, and a dust removal component is provided at the air inlet of each air inlet chamber. When the air enters, the dust in the air is filtered out by the dust removal component, which greatly reduces the possibility of dust entering the explosion-proof box 1 and causing an explosion. At the same time, the cleanliness of the surface of the electronic device is ensured, and the dust is prevented from adhering to the surface of the electronic device to generate heat and generate additional energy loss; according to the detection result of the environmental monitoring unit, the air inlet state of the first air inlet chamber 23 and the second air inlet chamber 24 is controlled by switching components to adapt to the air inlet requirements in different environments, improve the adaptability of the heat dissipation unit to the environment, and reduce energy waste.

[0078] Embodiment 4:

[0079] On the basis of the above-mentioned embodiment 3, the controller regulates the heat dissipation unit according to the detection result of the temperature sensor, specifically:

[0080] When the temperature in the explosion-proof box 1 is greater than the preset temperature value, the blower 14 and the cooling fan 12 are started.

[0081] The working principle and beneficial effects of the above technical solution are:

[0082] When the temperature inside the explosion-proof box 1 exceeds the preset temperature value, it indicates that the temperature inside the explosion-proof box 1 is too high and needs to be cooled, so the blower 14 and the cooling fan 12 are started to make the cooling unit work.

[0083] Embodiment 5:

[0084] On the basis of the above-mentioned embodiment 4, the controller regulates the heat dissipation unit according to the detection result of the dust concentration sensor, specifically:

[0085] When the dust concentration in the external environment is less than the preset dust concentration value, the switching component is started to set the first air inlet chamber 23 to the air inlet state and the second air inlet chamber 24 to the blocking state;

[0086] When the dust concentration in the external environment is greater than a preset dust concentration value, the switching component is started to set both the first air inlet chamber 23 and the second air inlet chamber 24 to an air inlet state.

[0087] The working principle and beneficial effects of the above technical solution are:

[0088] The control box 21 filters the dust in the external environment through the dust removal component. Affected by the external dust concentration, when the dust concentration is small, air is introduced through the first air inlet chamber 23, and the dust removal component at the first air inlet chamber 23 can filter the dust, which does not affect or slightly affects the air volume, and can achieve the effect of heat dissipation. When the external dust concentration is large, the first air inlet chamber 23 and the second air inlet chamber 24 are started to let in air at the same time, and the airflow is filtered at the same time through two sets of dust removal components to prevent dust from clogging the dust removal component when the air is introduced, so as to ensure the air volume of the heat dissipation unit, improve the heat dissipation efficiency, and thus play a role in energy saving.

[0089] Embodiment 6:

[0090] On the basis of the above-mentioned Example 5, the controller evaluates the performance of the heat dissipation unit, specifically: determining the relationship between the dust concentration in the external environment and the heat dissipation performance, that is, based on the detection result of the dust concentration in the external environment by the dust concentration sensor, and the relationship between the time required for each unit temperature reduction, the data is fitted and analyzed, and the cooling time under different dust concentration conditions is predicted; when the difference between the actual time required to reduce the unit temperature and the predicted time exceeds the preset range, it indicates that the performance of the heat dissipation unit is low and the heat dissipation unit needs to be repaired.

[0091] The working principle and beneficial effects of the above technical solution are:

[0092] A dust concentration sensor is used to detect the dust concentration in the external environment, and a temperature sensor is used to detect the time required to lower the unit temperature when the heat dissipation unit is in use, that is, a dust concentration value is corresponded to a time value; the dust concentration value and time value under different use environment states are collected, and the least squares method is used to fit the curve of the dust concentration value and time value; then when the dust concentration in the environment changes, the time required to lower the unit temperature is predicted; when the difference between the actual time required to lower the unit temperature and the predicted time is large, it indicates that the heat dissipation unit has failed to achieve the ideal heat dissipation efficiency, and it is necessary to consider the blockage of the dust removal component in the control box 21 and the blockage of the air outlet of the heat dissipation plate 11, and the heat dissipation unit should be repaired.

[0093] Embodiment 7:

[0094] like Figure 3 , 4 As shown, based on the above-mentioned embodiment 3, a first dust removal component is provided in the first air inlet cavity 23, and the first dust removal component includes:

[0095] The bellows 31 is installed at the air inlet at the top of the first air inlet cavity 23, and the bellows 31 is located in the installation cavity 22;

[0096] A support plate 32, the support plate 32 is connected to the top of the bellows 31;

[0097] The filter cover 33 is installed at the center of the corrugated tube 31 .

[0098] The filter cover 33 includes an upper closed section and a lower filter mesh section, wherein the filter mesh section is located in the bellows 31 , and the closed section is slidably connected to the air inlet at the top end of the explosion-proof box 1 .

[0099] The working principle and beneficial effects of the above technical solution are:

[0100] When the first dust removal assembly is used, the filter cover 33 is installed on the support plate 32 from the air inlet at the top of the explosion-proof box 1. The upper closed section of the filter cover 33 slides relative to the air inlet without separation. The filter screen section at the lower part of the filter cover 33 is arranged in the bellows 31, so that the airflow can only flow into the bellows 31 through the lower part of the filter cover 33, and then flow into the first air inlet cavity 23, preventing the airflow from flowing into the installation cavity 22 to cause dust accumulation, and facilitating the removal and replacement of the filter cover 33. The upper and lower positions of the support plate 32 are adjustable, and the wall of the bellows 31 is bent. After the airflow enters, it collides with the wall of the bellows 31, causing the bellows 31 to shake and drive the support plate 32 to shake, loosening the dust on the filter cover 33 and reducing the blockage on the filter cover 33.

[0101] Embodiment 8:

[0102] like Figure 3 , 5 As shown, based on the above-mentioned embodiment 7, a second dust removal component is provided in the second air inlet chamber 24, and the second dust removal component includes:

[0103] The conical tube 34 is installed at the air inlet on the side of the second air inlet chamber 24. The diameter of the conical tube 34 on one side close to the air inlet is larger than that on the other side. Both ends of the conical tube 34 are opened.

[0104] A sphere 35, which is disposed at the center of the tapered tube 34;

[0105] The telescopic struts 36 are evenly connected to the sphere 35 , and the other ends of the telescopic struts 36 are connected to the inner wall of the conical tube 34 . The side of the telescopic struts 36 close to the air inlet of the second air inlet cavity 24 is connected with a flexible filter.

[0106] The working principle and beneficial effects of the above technical solution are:

[0107] When the second dust removal assembly is in use, the airflow passes through the air inlet of the second air inlet chamber 24 and enters the conical tube 34, and then enters the second air inlet chamber 24 through the other end of the conical tube 34; the telescopic support rod 36 fixes the flexible filter screen, and when the airflow passes through the flexible filter screen, the dust carried is filtered out; the horizontal position of the sphere 35 is movable, and when the sphere 35 moves, the telescopic support rod 36 is driven to expand and contract, and the center of the flexible filter screen is pulled to switch between a conical state and a flat state; when the sphere 36 moves and drives the flexible filter screen to flatten, the dust on the flexible filter screen falls to the bottom of the conical tube 34 under the action of gravity, which effectively prevents the flexible filter screen from being blocked and centrally cleans the edge dust.

[0108] Embodiment 9:

[0109] like Figure 3 , 6 As shown in , 7, based on the above embodiment 8, the switching component includes:

[0110] A switch box 41, the switch box 41 is connected to the partition plate 25;

[0111] A first piston plate 42 and a second piston plate 43 are slidably disposed inside the switching box 41. A first piston rod 44 on the first piston plate 42 is connected to the first dust removal assembly. A second piston rod 45 on the second piston plate 43 extends into the tapered tube 34 and is connected to the ball 35. A blocking plate 46 adapted to the end of the tapered tube 34 is connected to the second piston rod 45.

[0112] A rack 47, the rack 47 is connected between the first piston plate 42 and the second piston plate 43;

[0113] The gear 48 is rotatably connected to the inner wall of the switching box 41 , and the rotating shaft of the gear 48 is connected to the output shaft of the driving motor, and the bottom end of the gear 48 is meshed and connected with the rack 47 .

[0114] The working principle and beneficial effects of the above technical solution are:

[0115] When the first air inlet chamber 23 is in the air intake state and the second air inlet chamber 24 is in the blocking state, the first piston plate 42 and the second piston plate 43 are both located near the conical tube 34, the second piston plate 43 is connected to the sphere 35 through the second piston rod 45, the blocking plate 46 on the second piston rod 45 is covered on the end of the conical tube 34 to seal it from air intake, the sphere 35 pushes the telescopic support rod 36 to flatten the flexible filter net; the first piston plate 42 is connected to the first dust removal assembly through the first piston rod 44, so that the support plate 32 moves up, the bellows 31 unfolds, and the filter cover 33 moves up. The space inside the bellows 31 is larger, and the wall of the bellows 31 has less obstruction to the airflow, which helps the airflow in the first air inlet chamber 23 to flow in quickly.

[0116] When both the first air inlet chamber 23 and the second air inlet chamber 24 are set to the air intake state, the drive motor is started to drive the gear 48 to rotate, the gear 48 is meshed with the rack 47 for transmission, the rack 47 drives the first piston plate 42 and the second piston plate 43 to move to the right, and the second piston rod 45 drives the sealing plate 46 to separate from the end of the tapered tube 34, so that the second air inlet chamber 24 is switched to the air intake state; the first piston rod 44 moves the support plate 32 downward, the bellows 32 is folded, the filter cover 33 is moved downward, the space inside the bellows 31 is reduced, the expansion of the airflow and the wall of the bellows 31 is intensified, the bellows 31 shakes more violently, the blockage of the filter cover 33 is reduced, and it is adapted to the environment with high dust concentration.

[0117] Through the above-mentioned structural design, the air intake state of the first air inlet chamber 23 and the second air inlet chamber 24 is quickly switched by the switching component. When the dust concentration is relatively large, the second air inlet chamber 24 is connected and used in conjunction with the first air inlet chamber 23 to reduce the possibility of blockage of the filter component and ensure the air intake volume. During the adjustment process, the position state of the filter cover 33 is adjusted at the same time to change the collision degree between the airflow and the bellows 31, so as to adapt to the anti-blocking effect of the filter cover 33.

[0118] Embodiment 10:

[0119] like Figure 3 , 4 As shown, based on the above embodiment 9, the switching component further includes:

[0120] A connecting pipeline, the connecting pipeline includes a first pipeline 51 at the bottom and two second pipelines 52 at the top, the first pipeline 51 is arranged horizontally, the second pipeline 52 is arranged vertically, the first piston rod 44 extends into the first pipeline 51 and is connected to the sealing plate, a third piston rod 53 is vertically arranged in the installation cavity 22, the bottom of the third piston rod 53 extends into the second pipeline 52 and is connected to the sealing plate, and the sealing plate is slidably arranged in the connecting pipeline;

[0121] The rotating rod 54 has its middle part hinged to the inner wall of the mounting cavity 22 , one end of the rotating rod 54 is hinged to the top of the third piston rod 53 , and the other end is hinged to the support plate 32 , and a waist-shaped hole is provided at the hinge.

[0122] The working principle and beneficial effects of the above technical solution are:

[0123] When the first piston rod 44 moves to the right, it drives the sealing plate to move in the first pipeline 51, squeezing the gas in the connecting pipeline, and the sealing plate in the second pipeline 52 moves upward under the action of gas pressure; the sealing plate pushes the third piston rod 53 to move upward, and the rotating rod 54 forms a lever structure on both sides with the hinge point as the center, thereby driving the support plate 32 to move downward; the second pipeline 52 is set to two, and the two rotating rods 54 connected to it are both connected to the support plate 32, so as to improve the stability of the height adjustment of the support plate 32.

[0124] Embodiment 11:

[0125] like Figure 3 , 8 As shown, on the basis of the above-mentioned embodiment 10, the partition plate 25 extends into the air outlet pipe 26 at the bottom end of the regulating box 21, the air outlet pipe 26 is connected to the pipe 15, and the two sides of the air outlet pipe 26 are respectively connected to the first air inlet chamber 23 and the second air inlet chamber 24;

[0126] The partition plate 25 is provided with two cylinders 27 spaced apart from each other, a communication port 28 is provided between the two cylinders 27, a semi-cylinder 29 is provided on the air outlet pipe 26, and the semi-cylinder 29 corresponds to the communication port 28, and an air flow channel is formed between the cylinder 27 and the semi-cylinder 29.

[0127] The working principle and beneficial effects of the above technical solution are:

[0128] The airflow in the first air inlet chamber 23 and the second air inlet chamber 24 flows downward to the air outlet pipe 26, and flows out through the pores between the cylinder 27 and the semi-cylinder 29. The airflows in the two air inlet chambers are exchanged through the connecting port 28. Under the action of the cylinder squeezing and airflow exchange, the airflows in the two air inlet chambers are mixed and flow into the explosion-proof box 1, making the airflow more uniform.

[0129] At the same time, when an explosion occurs, since the connecting port 28 is relatively weak, the generated shock wave breaks the partition plate 25 from the connecting port 28, and the cylinder 27 is squeezed and sealed between the semi-cylinders 29 on the side wall of the air outlet pipe 26, thereby blocking the air outlet pipe 26, improving the explosion-proof capability of the switch cabinet and reducing the leakage of explosives.

[0130] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0131] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0132] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. An energy-saving explosion-proof switch box, characterized in that: include: An explosion-proof box (1), wherein electronic devices are arranged in the explosion-proof box (1); A heat dissipation unit, the heat dissipation unit is arranged on the side of the explosion-proof box (1) and is used for ventilating and cooling the inside of the explosion-proof box (1); a dust removal component is arranged on the heat dissipation unit and is used for filtering and removing dust from ambient gas; The environmental monitoring unit comprises a temperature sensor and a dust concentration sensor. The temperature sensor is used to detect the temperature inside the explosion-proof box (1). The dust concentration sensor is used to detect the dust concentration in the external environment. The controller regulates the heat dissipation unit according to the detection result of the environmental monitoring unit.

2. The energy-saving explosion-proof switch box according to claim 1, characterized in that: The cooling unit includes: A heat sink (11), the heat sink (11) is arranged on one side of the explosion-proof box (1), and a plurality of one-way air outlet holes are evenly arranged on the heat sink (11); A cooling fan (12), the cooling fan (12) is connected to the inner wall of the other side of the explosion-proof box (1), and a protective cover (13) is arranged outside the cooling fan (12); The fan (14) is connected to the outside of the explosion-proof box (1). The fan (14) sucks the gas in the environment through the pipeline (15) and transports it to the heat dissipation fan (11) inside the explosion-proof box (1).

3. The energy-saving explosion-proof switch box according to claim 2 is characterized in that: The cooling unit also includes: A control box (21), the control box (21) is connected to the outer wall of the explosion-proof box (1), the control box (21) is provided with an installation cavity (22) and an air inlet cavity arranged up and down, the air inlet cavity comprises a first air inlet cavity (23) and a second air inlet cavity (24) arranged on the left and right, the first air inlet cavity (23) and the second air inlet cavity (24) are separated by a vertically arranged partition plate (25); the first air inlet cavity (23) and the second air inlet cavity (24) are both provided with air inlets, the dust removal component is arranged at the air inlets of the first air inlet cavity (23) and the second air inlet cavity (24), and the air outlet end of the control box (21) is connected to the pipeline (15); A switching component is used to control the air intake state of the first air intake chamber (23) and the second air intake chamber (24).

4. The energy-saving explosion-proof switch box according to claim 3 is characterized in that: The controller regulates the cooling unit according to the detection results of the temperature sensor, specifically: When the temperature inside the explosion-proof box (1) is greater than a preset temperature value, the blower (14) and the cooling fan (12) are started.

5. The energy-saving explosion-proof switch box according to claim 4, characterized in that: The controller regulates the cooling unit according to the detection results of the dust concentration sensor, specifically: When the dust concentration in the external environment is less than a preset dust concentration value, the switching component is started to set the first air inlet cavity (23) to an air inlet state and the second air inlet cavity (24) to a blocked state; When the dust concentration in the external environment is greater than a preset dust concentration value, the switching component is activated to set both the first air inlet chamber (23) and the second air inlet chamber (24) to an air inlet state.

6. The energy-saving explosion-proof switch box according to claim 5, characterized in that: The controller evaluates the performance of the heat dissipation unit, specifically: determining the relationship between the dust concentration in the external environment and the heat dissipation performance, that is, fitting and analyzing the data based on the detection result of the dust concentration sensor on the dust concentration in the external environment and the relationship between the time required for each unit temperature reduction, and predicting the cooling time under different dust concentration conditions; When the difference between the actual time required to reduce the unit temperature and the predicted time exceeds a preset range, it indicates that the performance of the heat dissipation unit is low and the heat dissipation unit needs to be repaired.

7. The energy-saving explosion-proof switch box according to claim 3 is characterized in that: A first dust removal component is arranged in the first air inlet chamber (23), and the first dust removal component comprises: A bellows (31), the bellows (31) being installed at the air inlet at the top end of the first air inlet cavity (23), and the bellows (31) being located in the installation cavity (22); A support plate (32), the support plate (32) is connected to the top end of the bellows (31); The filter cover (33) is installed at the center of the corrugated tube (31).

8. The energy-saving explosion-proof switch box according to claim 7, characterized in that: The filter cover (33) comprises an upper closed section and a lower filter mesh section, wherein the filter mesh section is located in the bellows (31), and the closed section is slidably connected to the air inlet at the top end of the explosion-proof box (1).

9. The energy-saving explosion-proof switch box according to claim 8, characterized in that: A second dust removal component is arranged in the second air inlet chamber (24), and the second dust removal component comprises: A conical tube (34), the conical tube (34) being installed at the air inlet on the side of the second air inlet cavity (24), the diameter of one side of the conical tube (34) close to the air inlet being larger than the other side, and both ends of the conical tube (34) being open; A sphere (35), the sphere (35) being arranged at the center of the conical tube (34); A telescopic support rod (36), wherein a plurality of telescopic support rods (36) are evenly connected to the sphere (35), the other end of the telescopic support rod (36) is connected to the inner wall of the conical tube (34), and a flexible filter is connected to one side of the telescopic support rod (36) close to the air inlet of the second air inlet chamber (24).

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