High-voltage power distribution cabinet for coal mine power supply system

Abstract

The invention relates to the technical field of power distribution cabinets, in particular to a high-voltage power distribution cabinet for a coal mine power supply system, which comprises a cabinet body, one side of the cabinet body is communicated with an air outlet, and the upper end surface of the cabinet body is fixedly provided with a fixed box; the conveying assembly comprises a filter bag arranged in a fixing box, the filter bag is driven to rotate, a dust filtering layer is fixedly installed on the outer wall of the filter bag, moisture absorption sponge is fixedly installed in the filter bag, and a detection plate is fixedly installed at the position, at the center line of one side of the filter bag, of the inner bottom end of the fixing box. Through the design of multi-stage filtration and dynamic dust removal, the problem that power supply equipment is eroded by dust and moisture in the mine environment is effectively solved, the rotary filter bag is combined with the dust filter layer and the moisture absorption sponge, dust in air can be continuously separated, moisture can be adsorbed, and the dust collection fan is matched with the linkage of the heating element, so that the dust removal efficiency is improved. And automatic dust cleaning and efficient moisture drying are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of power distribution cabinets, and in particular to a high-voltage power distribution cabinet for a coal mine power supply system. Background Art

[0002] As the core equipment of the high-voltage power system, the high-voltage distribution cabinet undertakes the key functions of power distribution, circuit control and system protection. It realizes the reception and distribution of high-voltage power by integrating components such as circuit breakers, disconnectors, and relay protection devices. It also has multiple protection mechanisms such as overload protection, short-circuit quick break, and ground fault isolation. It is an important infrastructure to ensure the safe and stable operation of the power grid.

[0003] Under the special working conditions of the coal mine power supply system, the high-voltage distribution cabinet faces multiple severe challenges. The high concentration of coal dust and rock powder in the mine environment will continuously impact the equipment. The traditional static filtration device adopts a fixed filter structure. The dust easily forms a dense blocking layer on the filter surface, resulting in a significant reduction in ventilation efficiency. This will not only cause abnormal temperature rise in the cabinet, accelerate the aging of insulation materials, but also shorten the service life of components. At the same time, the filter blockage frequency is too high, and it is often necessary to stop frequently for manual cleaning or replacement of filter elements, which significantly increases maintenance costs and workload; In addition, the mine environment is in a high humidity state for a long time, and moisture can easily penetrate into the cabinet through the weak sealing parts of the cabinet, causing the surface resistance of the insulating parts to decrease, which may cause leakage or short circuit failures. The metal parts continue to oxidize and corrode in a humid environment, which not only affects the conductivity, but also causes the mechanical structure to weaken. The overall reliability of the equipment is significantly lower than that of the ground environment, posing a serious threat to the continuous power supply of the mine. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, the present invention provides a high-voltage distribution cabinet for a coal mine power supply system, which can effectively solve the problem that the prior art adopts static filtering and requires frequent manual cleaning.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: The present invention provides a high-voltage power distribution cabinet for a coal mine power supply system, comprising: A cabinet, one side of which is connected to an air outlet, and an upper end surface of the cabinet is fixedly mounted with a fixing box; A conveying assembly, wherein the conveying assembly comprises a filter bag arranged in a fixed box, the filter bag is driven to rotate, a dust filter layer is fixedly installed on the outer wall of the filter bag, a moisture-absorbing sponge is fixedly installed inside the filter bag, a detection plate is fixedly installed at the bottom of the fixed box and at a midline position on one side of the filter bag, two notches are provided in the detection plate, a lifting plate is elastically slidably installed in the notch, a displacement monitoring element is arranged above the lifting plate, and the displacement monitoring element is electrically connected to a controller; Air inlet assembly, used to draw outside air into the fixed box for dust removal and dehumidification; Dust removal and dehumidification components are used to clean the dust filtered by the filter bag and the dust filter layer, and dry the water filtered in the moisture-absorbing sponge; The moisture absorption component is used to absorb and discharge the dried moisture in the moisture absorption sponge.

[0006] Preferably, two pairs of support frames are symmetrically installed on the inner bottom end of the fixed box, a fixed disk is fixedly installed on the opposite end of the support frame, a rotating tooth is rotatably installed on the fixed disk, two toothed belts are symmetrically installed on the inner wall of the filter bag, the toothed belts are meshed with the rotating teeth, a rotating driving member is fixedly installed on one side of the fixed disk, the output end of the rotating driving member passes through the fixed disk and is fixedly connected to the rotating teeth, and the rotating teeth are connected with a belt transmission.

[0007] Preferably, sliding rails are fixedly installed on both sides of the toothed belt, a sliding rod is fixedly installed in the slot, the lifting plate is slidably connected to the sliding rod, the lifting plate is slidably connected to the sliding rail, a spring is fixedly installed between the lifting plate and the slot, the displacement monitoring element is fixedly connected to the top end in the slot, the detection end of the displacement monitoring element is fixedly connected to the lifting plate, and the displacement monitoring element is electrically connected to the controller.

[0008] Preferably, an air inlet barrel is embedded in the upper end surface of the fixed box, and a fixed cover is symmetrically installed on the outer wall of the air inlet barrel, and an irradiation lamp and a light source detection element are respectively fixedly installed in the fixed cover, and the light source detection element is electrically connected to the controller, and the lower end surface of the air inlet barrel is connected with a connecting cover, and the connecting cover is in contact with the outer wall of the filter bag, and an air inlet pipe is embedded in the inner bottom end of the fixed box, and an exhaust fan is fixedly installed in the air inlet pipe, and the upper end surface of the exhaust fan is connected with a contact cover, and the contact cover is in contact with the inner wall of the filter bag at the position corresponding to the connecting cover.

[0009] Preferably, an air outlet duct is embedded in the upper end surface of the fixed box, and the air outlet duct is connected to a dust suction fan, and the dust suction fan is electrically connected to a controller, and a fixing plate is fixedly installed on the lower end of the dust suction fan, and two magnets are symmetrically installed on the lower end surface of the fixing plate, and a dust hood is fixedly installed on the lower end surface of the fixing plate and between the magnets, and the dust hood is in contact with the outer wall of the filter bag, and a partition is provided inside the filter bag and at the position corresponding to the magnet, and the partition cooperates with the magnet by magnetic attraction.

[0010] Preferably, connecting frames are fixedly mounted on both sides of the dust hood, and heating elements are fixedly mounted on the upper end surfaces of the connecting frames.

[0011] Preferably, two fixing frames are symmetrically installed on the upper end surface of the fixed box, a desiccant is fixedly installed between the fixing frames, the desiccant is electrically connected to the controller, the lower end surface of the desiccant is connected to a plurality of connecting pipes, the lower ends of the connecting pipes pass through the fixed box and are connected to contact heads, the contact heads are in contact with the outer wall of the filter bag, both sides of the contact heads are connected to air inlet pipes, and one side of the desiccant is connected to a delivery pipe.

[0012] Preferably, a support plate is fixedly and symmetrically mounted on the inner bottom end of the fixed box, a rolling wheel is rotatably mounted between the support plates, the rolling wheel is extrusion-contactedly connected to the filter bag, and the rolling wheel is transmission-connected to a rotating toothed belt.

[0013] Preferably, it also includes a cooling component, which includes a fixed box fixedly installed on the top of the cabinet, the fixed box is filled with cooling water, a ventilation copper tube is arranged in the fixed box, an air inlet is fixedly installed on one side of the fixed box, one end of the air inlet passes through the fixed box and is connected with the ventilation copper tube, an air outlet is opened on the other side of the fixed box, the ventilation copper tube is connected with the air outlet, one side of the fixed box is connected with a circulation pipe, the circulation pipe passes through the cabinet and extends to the outside, a cooling device is fixedly installed in the circulation pipe, the cooling device consists of a cooling fin and a circulating water pump, the cooling device is connected with a delivery pipe, a liquid isolation valve is embedded in the inner wall of the delivery pipe, the lower end face of the cooling device is connected with a drain, and a pressure relief valve is fixedly installed on the inner wall of the drain.

[0014] Preferably, a dehumidification component is further included, which includes a reflux box fixedly installed at the bottom end of the fixed box and below the filter bag, the reflux box consists of a long box and a square box connected to one side, one side of the long box is connected to a flow pipe, the flow pipe is connected to a delivery pipe, a first solenoid valve is embedded in the inner wall of the square box, the upper end surface of the square box is in contact with the filter bag, a drying port is provided on the upper end surface of the square box, one side of the long box is connected to an exhaust pipe, a second solenoid valve is fixedly installed on the inner wall of the exhaust pipe, the first solenoid valve and the second solenoid valve are electrically connected to the controller, a U-shaped bend is fixedly installed in the flow pipe, an opening valve is embedded at the lower position of the outer wall of the U-shaped bend, and absorbent cotton is fixedly installed on the inner wall of the U-shaped bend.

[0015] Compared with the known prior art, the technical solution provided by the present invention has the following beneficial effects: First, through multi-stage filtration and dynamic dust removal design, the problem of dust and moisture erosion on power supply equipment in the mine environment is effectively solved. The rotating filter bag combined with the dust filter layer and the moisture-absorbing sponge can continuously separate the dust in the air and absorb moisture. The linkage between the dust suction fan and the heating element can realize automatic dust cleaning and efficient moisture drying. At the same time, the built-in light source detection and displacement monitoring system can adjust the working parameters in real time according to the dust concentration and filter bag weight to ensure the accuracy and stability of dust removal and dehumidification. This design greatly reduces the risk of short circuit and aging of equipment due to dust accumulation and moisture, and significantly improves the durability of the distribution cabinet in harsh environments.

[0016] Second, temperature control and circulating cooling technology are used to cool the treated air through ventilation copper pipes and cooling devices to prevent high-temperature air from entering the cabinet and affecting the performance of electrical components. The rolling wheel squeezes the filter bag to gather moisture under the contact head of the dehumidifier, thereby improving the moisture absorption efficiency and ensuring that the residual moisture in the filter bag is completely removed. In addition, the system can reuse the waste heat from drying through intelligent control of the solenoid valve and the reflux box, thereby improving energy utilization and ensuring the stable operation of the power supply system in the high-temperature and high-humidity mine environment. It also reduces manual maintenance costs through automated control, providing reliable technical support for safe power supply to coal mines. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the internal structure of the present invention; Figure 3 It is a schematic diagram of the internal structure of the fixed box of the present invention; Figure 4 It is a structural schematic diagram of the transmission component of the present invention; Figure 5 It is a schematic cross-sectional structure diagram of the filter bag of the present invention; Figure 6 It is a structural schematic diagram of the detection board of the present invention; Figure 7 It is a structural schematic diagram of the air inlet assembly of the present invention; Figure 8 It is a schematic diagram of the structure of the moisture absorption component of the present invention; Fig. 9 It is a schematic cross-sectional view of the moisture absorption component of the present invention; Fig.10 It is a schematic structural diagram of the dehumidification component of the present invention.

[0019] Figure numerals: 1, cabinet; 101, air outlet; 2, fixed box; 3, transmission component; 301, filter bag; 302, dust filter layer; 303, moisture-absorbing sponge; 304, toothed belt; 305, support frame; 306, fixed plate; 307, rotating drive member; 308, rotating teeth; 309, sliding rail; 310, detection plate; 311, notch; 312, slide bar; 313, lifting plate; 314, spring; 315, displacement monitoring element; 4, air inlet component; 401, air inlet barrel; 402, fixed cover; 403, irradiation lamp; 404, light source detection element; 405, connection cover; 406, air inlet pipe; 407, exhaust fan; 408, contact cover; 5, dust removal and dehumidification component; 501 , air outlet duct; 502, dust suction fan; 503, fixing plate; 504, magnet; 505, dust suction hood; 506, partition; 507, connecting frame; 508, heating element; 6, dehumidification component; 601, fixing frame; 602, dehumidification machine; 603, connecting pipe; 604, contact head; 605, air inlet pipe; 606, conveying pipe; 607, supporting plate; 608, rolling wheel; 7, cooling component; 701, fixing box; 702, air inlet; 703, circulation pipe; 704, cooling device; 705, drain outlet; 8, dehumidification component; 801, flow pipe; 802, reflux box; 803, first solenoid valve; 804, exhaust duct; 805, U-bend pipe; 806, open valve. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not 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.

[0021] The present invention will be further described below in conjunction with the embodiments.

[0022] Example: Refer to Figures 1 to 10 , a high voltage distribution cabinet for a coal mine power supply system, comprising: A cabinet 1, one side of the cabinet 1 is connected to an air outlet 101, and a fixing box 2 is fixedly installed on the upper end surface of the cabinet 1; The transmission component 3 includes a filter bag 301 arranged in the fixed box 2. The filter bag 301 is driven to rotate. A dust filter layer 302 is fixedly installed on the outer wall of the filter bag 301. A hygroscopic sponge 303 is fixedly installed inside the filter bag 301. The hygroscopic sponge 303 is made of an existing silica gel material and can quickly absorb and store liquid (water). A detection plate 310 is fixedly installed at the bottom of the fixed box 2 and at the midline position on one side of the filter bag 301. Two notches 311 are provided in the detection plate 310. A lifting plate 313 is elastically slidably installed in the notch 311. A displacement monitoring element 315 is arranged above the lifting plate 313. The displacement monitoring element 315 is an existing device and can be used with an inductive displacement sensor. When the iron core composed of the inductive displacement sensor is located at the center, the induced voltages of the two receiving coils are equal and the signal is zero; when the iron core is offset, the signals of the two receiving coils are no longer symmetrical, and a voltage signal proportional to the displacement is obtained through differential processing. The displacement monitoring element 315 is electrically connected to a controller; The air inlet assembly 4 is used to draw outside air into the fixed box 2 for dust removal and dehumidification; The dust removal and dehumidification component 5 is used to clean the dust filtered by the filter bag 301 and the dust filter layer 302, and dry the water filtered in the moisture absorption sponge 303; The moisture absorption component 6 is used to absorb and discharge the dried moisture in the moisture absorption sponge 303.

[0023] It should be noted that the moisture-absorbing sponge 303 is made of silica gel, has a certain heat resistance, and can withstand a certain temperature. After absorbing a certain amount of moisture, it is continuously rotated through the filter bag 301, and the internal moisture is dried through the dust removal and dehumidification component 5, and then the moisture is absorbed by the moisture absorption component 6 to ensure that it can absorb moisture again after the cycle.

[0024] Reference Figures 4 to 6Two pairs of support frames 305 are symmetrically installed at the inner bottom end of the fixed box 2, and a fixed disk 306 is fixedly installed at the opposite end of the support frame 305. A rotating tooth 308 is rotatably installed on the fixed disk 306. Two toothed belts 304 are symmetrically installed on the inner wall of the filter bag 301. The toothed belts 304 are meshed with the rotating teeth 308. A rotating driving member 307 is fixedly installed on one side of the fixed disk 306. The rotating driving member 307 adopts an existing motor for use. The output end of the rotating driving member 307 passes through the fixed disk 306 and is fixedly connected to the rotating teeth 308. The rotating teeth 308 are connected with a belt transmission. The two sides of the toothed belt 304 are fixedly installed A sliding rail 309 is installed. The sliding rail 309 is made of rubber material. A T-shaped groove is opened inside to limit the lifting plate 313. A sliding rod 312 is fixedly installed in the notch 311. The lifting plate 313 is slidably connected to the sliding rod 312. The lifting plate 313 is slidably connected to the sliding rail 309. A spring 314 is fixedly installed between the lifting plate 313 and the notch 311. A displacement monitoring element 315 (the displacement monitoring element 315 detects the displacement of the lifting plate 313 (accuracy ±0.1mm), and feeds back the weight change of the filter bag 301 to the controller in real time, so as to dynamically adjust the power of the dehumidifier 602, see Figure 6 ) is fixedly connected to the top end of the slot 311, the detection end of the displacement monitoring element 315 is fixedly connected to the lifting plate 313, the displacement monitoring element 315 is electrically connected to the controller, and the lifting plate 313 is provided with two upper and lower ones. The upper lifting plate 313 is slidably connected to the toothed belt 304 and one side of the filter bag 301 after filtering the moisture through the sliding rail 309, and the lower lifting plate 313 is slidably connected to the toothed belt 304 and one side of the filter bag 301 after drying and absorbing the moisture through the sliding rail 309, so as to detect the weight of the filter bag 301 respectively.

[0025] Reference Figure 7The upper end surface of the fixed box 2 is embedded with an air inlet barrel 401, and the outer wall of the air inlet barrel 401 is symmetrically installed with a fixed cover 402. The fixed cover 402 is respectively fixed with an irradiation lamp 403 and a light source detection element 404. The light source detection element 404 is an existing device, which is used with a photoresistor. It is an element whose electrical signal changes with the light intensity. The light source detection element 404 is electrically connected to the controller. The lower end surface of the air inlet barrel 401 is connected with a connecting cover 405, and the connecting cover 405 is in contact with the outer wall of the filter bag 301. The inner bottom end of the fixed box 2 is embedded with an air inlet pipe 406, and the air inlet An exhaust fan 407 is fixedly installed in the air duct 406. The exhaust fan 407 is an existing device, which is used for gas or air circulation, ventilation and exhaust equipment. When the exhaust fan 407 is working, the suction force generated will allow the outside air to enter the air inlet barrel 401, and allow the air to pass through the filter bag 301 and enter the contact cover 408 and the air inlet pipe 406, and the filter bag 301 will filter out dust and moisture in the air. The upper end face of the exhaust fan 407 is connected to the contact cover 408, and the contact cover 408 is in contact and connected with the inner wall of the filter bag 301 and at the position corresponding to the connecting cover 405.

[0026] Reference Figures 8 to 9The upper end surface of the fixed box 2 is embedded with an air outlet duct 501, and the air outlet duct 501 is connected to a dust suction fan 502. The dust suction fan 502 is an existing device, which is a device for sucking dust, powder and impurities. The dust suction fan 502 is electrically connected to the controller. A fixed plate 503 is fixedly installed at the lower end of the dust suction fan 502. Two magnets 504 are symmetrically installed on the lower end surface of the fixed plate 503. A dust cover 505 is fixedly installed on the lower end surface of the fixed plate 503 and between the magnets 504. The dust cover 505 is in contact with the outer wall of the filter bag 301. A partition 506 is provided inside the filter bag 301 at the position corresponding to the magnet 504. The partition 506 cooperates with the magnet 504 by magnetic attraction. Through the magnetic attraction between the partition 506 and the magnet 504, the partition 506 and the magnet 504 will clamp the filter bag 301 and the dust filter layer 302 in the middle (the partition 506 is made of magnetic conductive material, and the magnet 504 is a permanent magnet. The magnetic attraction force of the two is in the range of 5-10N, which not only ensures the clamping stability but also avoids excessive The extrusion causes the filter bag to deform. When the dust suction fan 502 is started, the clamping effect of the partition 506 and the magnet 504 forms a local seal, so that the dust suction cover 505 only extracts the dust attached to the outer wall of the filter bag, and the area where the hygroscopic sponge 303 is located is not affected due to the partition). In this way, when the dust suction fan 502 is working, the air in the hygroscopic sponge 303 will not be sucked out, and the dust on the filter bag 301 and the dust filter layer 302 will be sucked out more efficiently. Arc chamfers are provided at both ends of the partition 506. During the rotation of the filter bag 301, the arc chamfers will be slidably connected with the hygroscopic sponge 303 without generating resistance. Connecting frames 507 are fixedly installed on both sides of the dust suction cover 505. A heating element 508 is fixedly installed on the upper end surface of the connecting frame 507. The heating element 508 is an existing device, which adopts a metal heating element for use. The resistance wire is wrapped by a metal box, and the heat is quickly transferred by using the thermal conductivity of the metal. The heating temperature is preferably set to 100°C, which can effectively dry the moisture in the filter bag 301.

[0027] Reference Figure 8Two fixing frames 601 are symmetrically installed on the upper end surface of the fixing box 2, and a dehumidifier 602 is fixedly installed between the fixing frames 601. The dehumidifier 602 is an existing device, which creates a space with a pressure lower than the surrounding environment inside, thereby attracting the air and moisture in the filter bag 301 and the dehumidifying sponge 303 into the device. The establishment of negative pressure allows the air and moisture to quickly enter and be effectively removed. In the process of absorbing the air and moisture in the filter bag 301 and the dehumidifying sponge 303, because the filter bag 301 and the dehumidifying sponge 303 have just been heated by the heating element 508, the air will also be heated and dehumidified by the dehumidifier. 602 is used for absorption, the dehumidifier 602 is electrically connected to the controller, the lower end face of the dehumidifier 602 is connected with a plurality of connecting pipes 603, the lower end of the connecting pipe 603 passes through the fixed box 2 and is connected with a contact head 604, the contact head 604 is in contact with the outer wall of the filter bag 301, the two sides of the contact head 604 are connected with an air inlet pipe 605, one side of the dehumidifier 602 is connected with a conveying pipe 606, a support plate 607 is fixedly and symmetrically installed at the inner bottom end of the fixed box 2, a rolling wheel 608 is rotatably installed between the support plates 607, the rolling wheel 608 is in contact with the filter bag 301, and the rolling wheel 608 is connected with the rotating tooth 308 with a transmission.

[0028] Reference Fig.10 , and also includes a cooling component 7, the cooling component 7 includes a fixed box 701 fixedly installed at the top of the cabinet 1, the fixed box 701 is filled with cooling water, a ventilation copper pipe is arranged in the fixed box 701, an air inlet 702 is fixedly installed on one side of the fixed box 701, one end of the air inlet 702 passes through the fixed box 701 and is connected with the ventilation copper pipe, an air outlet is opened on the other side of the fixed box 701, the ventilation copper pipe is connected with the air outlet, one side of the fixed box 701 is connected with a circulation pipe 703, the circulation pipe 703 passes through the cabinet 1 and extends to the outside, a cooling device 704 is fixedly installed in the circulation pipe 703, the cooling device 704 consists of a cooling fin and a circulating water pump, the cooling fin The circulating water pump is an existing device, which is an existing mature technology and will not be described in detail here. The cooling device 704 is connected to the delivery pipe 606, and a liquid isolation valve is embedded in the inner wall of the delivery pipe 606. The liquid isolation valve is an existing device. The liquid isolation valve adopts a hydrophobic membrane layer and a gravity diversion design, and only allows gas to pass through. Liquid water is intercepted and enters the cooling device 704. The lower end surface of the cooling device 704 is connected to a drain port 705, and a pressure relief valve is fixedly installed on the inner wall of the drain port 705. The pressure relief valve is a valve used to control and protect the fluid system. Its main function is to automatically open when the pressure in the system exceeds the set safety threshold to release excess pressure; After the circulating water pump is started, the cooling water flows from the fixed box 701 through the circulating pipe 703 to the cooling device 704. The cooling plate reduces the water temperature to below 25°C. The low-temperature water flows back to the fixed box 701 to cool the ventilation copper pipe. The treated dry air (humidity <30%) enters the cabinet 1 through the air outlet to ensure that the working temperature of the electrical components is stable within 40°C (see Figure 9-10 ).

[0029] Reference Fig.10 , and also includes a dehumidification component 8, which includes a reflux box 802 fixedly installed at the bottom end of the fixed box 2 and below the filter bag 301, and the reflux box 802 is composed of a long box and a square box connected to one side, and a flow pipe 801 is connected to one side of the long box, and the flow pipe 801 is connected to the delivery pipe 606, and a first solenoid valve 803 is embedded in the inner wall of the square box, and the upper end surface of the square box is in contact with the filter bag 301. A drying port is opened on the upper end surface of the square box, and an exhaust pipe 804 is connected to one side of the long box, and a second solenoid valve is fixedly installed on the inner wall of the exhaust pipe 804. The first solenoid valve 803 , the second solenoid valve is electrically connected to the controller. The first solenoid valve 803 and the second solenoid valve are an existing device. When current passes through the electromagnetic coil, the magnetic field generated causes the valve core to move, controlling the switch state of the valve port, thereby realizing the flow or stop of the fluid. A U-shaped elbow 805 is fixedly installed in the flow tube 801, and an opening valve 806 is embedded at the lower position of the outer wall of the U-shaped elbow 805. Water-absorbing cotton is fixedly installed on the inner wall of the U-shaped elbow 805. The U-shaped elbow 805 is embedded with water-absorbing cotton to intercept the residual water in the flow tube 801 and regularly clean it by opening the valve 806 (see Fig.10 ).

[0030] The working principle of the present invention is as follows: By starting the rotary drive member 307, the rotating teeth 308 are driven to rotate, and the rotating teeth 308 are meshed with the toothed belt 304, driving the filter bag 301 to circulate in the fixed box 2 (the rotation speed is preferably set to 5min-7min per circle). The inner and outer walls of the filter bag 301 are composed of glass fiber (glass fiber is heat-resistant and can withstand high temperatures of 250°C to 300°C), and the surface is relatively smooth. The two sides are made of rubber material. External air can enter the filter bag 301 from the outer wall and flow out from the inner wall. By opening the pump The fan 407 draws air, and the outside air enters the connecting cover 405 through the air inlet barrel 401, and enters the filter bag 301 through the connecting cover 405, and enters the contact cover 408 and the air inlet pipe 406 through the filter bag 301. In the process of the outside air entering the filter bag 301, the dust in the air will be filtered through the filter bag 301 and the dust filter layer 302, and the dust will remain on the outer wall of the filter bag 301, and the hygroscopic sponge 303 will filter out the moisture in the air, and the filtered air will pass through The contact cover 408 enters the air inlet pipe 406, and then enters the air inlet 702 and the ventilation copper pipe through the air inlet pipe 406. The ventilation copper pipe is set in the fixed box 701. By turning on the circulating water pump, the cooling water circulates in the fixed box 701, the circulating pipe 703 and the cooling device 704. The cooling fins are set to cool the cooling water, and then the cooling water cools the air flowing in the ventilation copper pipe (the ambient humidity and temperature in the mine are relatively high, and directly discharging the air in the mine into the cabinet 1 cannot reduce the cabinet temperature). 1), the cooled air is discharged into the cabinet 1 through the air outlet to cool the electrical components in the cabinet 1. Therefore, after the outside air is drawn into the fixed box 2 through the air inlet assembly 4, it passes through the dust filter layer 302 of the dynamic rotating filter bag 301 to intercept dust, and the moisture absorption sponge 303 to absorb moisture, and then the air is circulated and cooled by the cooling device 704, and finally a dust-free, dry, low-temperature clean airflow is formed to enter the cabinet 1. This process completely eliminates the harm of the harsh environment to the electrical components through the following mechanisms: Dust control: The dust filter layer 302 is linked with the dust suction fan 502 to remove dust accumulated on the surface of the filter bag in real time to prevent dust from penetrating into the cabinet 1 and causing short circuit or poor contact of components; Humidity suppression: The moisture-absorbing sponge 303 combined with the drying and suction of the moisture absorber 602 reduces the air humidity to below the safety threshold, preventing corrosion of metal parts or moisture-damaged breakdown of insulating materials; Temperature regulation: The ventilation copper pipe and cooling water circulation cool the treated air for a second time, ensuring that the air temperature entering the cabinet 1 is lower than 40°C, directly solving the problem of equipment overheating caused by the high temperature environment of the mine; In the process of the filter bag 301 filtering dust and moisture in the external air, as the filter bag 301 rotates continuously, the filter bag 301 will drive the dust and moisture filtered out of the outer surface and the interior to move, and the heating element 508 provided will heat the filter bag 301 to evaporate the moisture in the moisture-absorbing sponge 303, and by turning on the dehumidifier 602 to suck air, the moisture in the filter bag 301 contacts the outer wall through the contact head 604, and the dried moisture in the filter bag 301 enters the dehumidifier 602 along with the air through the contact head 604 and the connecting pipe 603 and is then discharged from the conveying pipe 606. It should be noted that when the heating element 508 is used to heat the moisture in the filter bag 301 During the drying process, the dried moisture may flow into the fixed box 2 through the polyester filter bags arranged on the inner and outer walls of the filter bag 301, and when the contact head 604 sucks air from the filter bag 301, the arranged air inlet pipe 605 will also extract the water vapor in the fixed box 2. It should also be noted that during the process of the dehumidifier 602 and the dust suction fan 502 absorbing moisture and dust, the arranged rolling wheel 608 is connected to the rotating gear 308 through the belt to rotate and squeeze the filter bag 301. The squeezed filter bag 301 will cause moisture to gather in the filter bag 301 and above the rolling wheel 608, so as to facilitate the dehumidifier 602 to suck out the moisture. When the dust filtered on the outer surface of the filter bag 301 moves to the position of the fixed plate 503, the magnet 504 will magnetically attract the partition plate 506 to clamp the filter bag 301 with dust on the outer surface and the dust filter layer 302 between the partition plate 506 and the magnet 504. By turning on the dust suction fan 502 for exhaust, the suction force generated by the dust suction fan 502 will suck the dust on the outer surface of the filter bag 301 and the dust filter layer 302 into the air outlet pipe 501 for discharge. It should be noted that in the process of outside air entering the air inlet barrel 401, the set irradiation lamp 403 is turned on to irradiate light to penetrate the air inlet barrel 401, and the set light source detection element 404 will receive the light penetrating into the air inlet barrel 401. When the air contains a large amount of dust, the dust will affect the light irradiated by the irradiation lamp 403, and the light received by the light source detection element 404 will be affected and generate a corresponding electrical signal. The controller controls the The voltage input to the dust suction fan 502 is increased by the controller when there is a lot of dust, which affects the light received by the light source detection element 404 and generates a weak electrical signal and exceeds the set threshold. When there is less dust, which affects the light received by the light source detection element 404 and generates a strong electrical signal, the controller controls the voltage input to the dust suction fan 502 to decrease. In this way, the voltage of the dust suction fan 502 is adjusted by detecting the dust content of the air entering the air inlet barrel 401, and the dust suction fan 502 is controlled to remove the dust on the outer surface of the filter bag 301 and the dust filter layer 302 with different powers, thereby reducing unnecessary energy consumption. This on-demand adjustment mechanism not only saves energy, but also reduces mechanical wear and significantly extends the service life of the dust suction fan 502 and the filter bag 301. The fine control of the voltage avoids the extreme situation of excessive or insufficient suction (causing dust residue). The air with moisture and drying temperature entering the delivery pipe 606 will enter the cooling device 704. The liquid isolation valve provided in the cooling device 704 will isolate the air, so that the moisture enters the cooling device 704 for cooling circulation (the flow pipe 801 is provided with a U-shaped elbow 805, which can effectively filter the moisture in the air entering the flow pipe 801), so as to cool down the ventilation copper pipe of the fixed box 701, and the isolated air will enter the reflux box 802 through the flow pipe 801 and be discharged to the outside through the exhaust pipe 804. When the moisture content entering the fixed box 701 is high, the excess cooling water can be discharged to the outside through the drain port 705 through the setting of the pressure relief valve; It should be emphasized that, when the filter bag 301 is filtering moisture and dust in the air and rotating, the filtering part of the filter bag 301 will rotate synchronously with the toothed belt 304. During the rotation of the toothed belt 304, the sliding rail 309 will be driven to slide and connect with the lifting plate 313. When the moisture content of the filter is high, the filter bag 301 will increase in weight, and the lifting plate 313 is arranged on one side of the filter bag 301 and at the center line of the filter bag 301. After the weight of the filtered moisture increases, the filter bag 301 will fall, driving the toothed belt 304 and the sliding rail 309 to fall synchronously, and the lifting plate 313 will be driven to slide and connect with the lifting plate 313. As the rail 309 falls, the lifting plate 313 will slide down in the slot 311 and the outer wall of the slide bar 312 and compress the spring 314. The detection end of the displacement monitoring element 315 will generate an electrical signal through the decline of the lifting plate 313, thereby indicating that the filter bag 301 has a high moisture content and a heavy weight. The controller controls the voltage input to the dehumidifier 602 through the generated electrical signal, thereby increasing the output power of the dehumidifier 602 and improving the effect of absorbing and removing moisture from the filter bag 301. The lifting plate 313 arranged below will slide on the sliding rail 309 of the filter bag 301 below. The filter bag 301 of this part is dynamically connected. After the moisture and dust are absorbed, when the filter bag 301 and the sliding rail 309 are driven to rotate, there is no falling, which indicates that there is no moisture in the filter bag 301 after the moisture absorber 602 absorbs the moisture, and the weight is kept at the weight without moisture, and there is no falling. When the filter bag 301 still falls after the moisture absorber 602 absorbs the moisture, it indicates that the moisture in the filter bag 301 is not completely absorbed. The lifting plate 313 at the bottom will be moved by the falling condition of the filter bag 301. The filter bag 301 slides down, and the displacement monitoring element 315 detects the lifting plate 313 and generates an electrical signal. The controller controls the first solenoid valve 803 to open and the second solenoid valve to close through the generated electrical signal. The hot air transported to the reflux box 802 through the flow tube 801 will enter the square box and be discharged from the drying port, further drying the filter bag 301 (at this time, the filter bag 301 has been dried by the heating element 508 and absorbed by the dehumidifier 602, and the residual moisture inside is less. The warm air after being filtered by the liquid isolation valve can dry the residual moisture in the filter bag 301).

[0031] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high voltage distribution cabinet for a coal mine power supply system, characterized in that: include: A cabinet (1), one side of the cabinet (1) being connected to an air outlet (101), and a fixing box (2) being fixedly mounted on the upper end surface of the cabinet (1); A transmission component (3), the transmission component (3) comprising a filter bag (301) arranged in a fixed box (2), the filter bag (301) being driven to rotate, a dust filter layer (302) being fixedly mounted on the outer wall of the filter bag (301), a moisture-absorbing sponge (303) being fixedly mounted inside the filter bag (301), a detection plate (310) being fixedly mounted at the bottom end of the fixed box (2) and at a midline position on one side of the filter bag (301), the detection plate (310) being provided with two notches (311), a lifting plate (313) being elastically slidably mounted in the notches (311), a displacement monitoring element (315) being arranged above the lifting plate (313), and the displacement monitoring element (315) being electrically connected to a controller; An air inlet assembly (4) is used to draw outside air into the fixed box (2) for dust removal and dehumidification; A dust removal and dehumidification component (5) is used to clean the dust filtered by the filter bag (301) and the dust filter layer (302), and to dry the water filtered in the moisture absorbing sponge (303); The moisture absorption component (6) is used to absorb and discharge the dried moisture in the moisture absorption sponge (303).

2. A high voltage distribution cabinet for a coal mine power supply system according to claim 1, characterized in that: Two pairs of support frames (305) are symmetrically mounted on the inner bottom end of the fixed box (2); a fixed disk (306) is fixedly mounted on the opposite end of the support frame (305); a rotating tooth (308) is rotatably mounted on the fixed disk (306); two toothed belts (304) are symmetrically mounted on the inner wall of the filter bag (301); the toothed belts (304) are meshed with the rotating teeth (308); a rotating driving member (307) is fixedly mounted on one side of the fixed disk (306); an output end of the rotating driving member (307) passes through the fixed disk (306) and is fixedly connected to the rotating teeth (308); and the rotating teeth (308) are connected by belt transmission.

3. A high voltage distribution cabinet for a coal mine power supply system according to claim 2, characterized in that: Sliding rails (309) are fixedly installed on both sides of the toothed belt (304), a sliding rod (312) is fixedly installed in the slot (311), the lifting plate (313) is slidably connected to the sliding rod (312), the lifting plate (313) is slidably connected to the sliding rails (309), a spring (314) is fixedly installed between the lifting plate (313) and the slot (311), the displacement monitoring element (315) is fixedly connected to the top end in the slot (311), the detection end of the displacement monitoring element (315) is fixedly connected to the lifting plate (313), and the displacement monitoring element (315) is electrically connected to the controller.

4. A high voltage distribution cabinet for a coal mine power supply system according to claim 3, characterized in that: An air inlet barrel (401) is embedded in the upper end surface of the fixed box (2), and a fixed cover (402) is symmetrically installed on the outer wall of the air inlet barrel (401). An irradiation lamp (403) and a light source detection element (404) are fixedly installed in the fixed cover (402), respectively. The light source detection element (404) is electrically connected to a controller. The lower end surface of the air inlet barrel (401) is connected to a connecting cover (405), and the connecting cover (405) is in contact with the outer wall of the filter bag (301). An air inlet pipe (406) is embedded in the inner bottom end of the fixed box (2), and an exhaust fan (407) is fixedly installed in the air inlet pipe (406). The upper end surface of the exhaust fan (407) is connected to a contact cover (408), and the contact cover (408) is in contact with the inner wall of the filter bag (301) at a position corresponding to the connecting cover (405).

5. The high-voltage distribution cabinet for a coal mine power supply system according to claim 1, characterized in that: An air outlet pipe (501) is embedded in the upper end surface of the fixed box (2); the air outlet pipe (501) is connected to a dust suction fan (502); the dust suction fan (502) is electrically connected to a controller; a fixed plate (503) is fixedly mounted on the lower end of the dust suction fan (502); two magnets (504) are symmetrically mounted on the lower end surface of the fixed plate (503); a dust suction cover (505) is fixedly mounted on the lower end surface of the fixed plate (503) and between the magnets (504); the dust suction cover (505) is in contact with and connected to the outer wall of the filter bag (301); a partition plate (506) is arranged inside the filter bag (301) and at a position corresponding to the magnet (504); the partition plate (506) is magnetically matched with the magnet (504).

6. A high voltage distribution cabinet for a coal mine power supply system according to claim 5, characterized in that: Connecting frames (507) are fixedly mounted on both sides of the dust hood (505), and a heating element (508) is fixedly mounted on the upper end surface of the connecting frame (507).

7. A high voltage distribution cabinet for a coal mine power supply system according to claim 2, characterized in that: Two fixed frames (601) are symmetrically mounted on the upper end surface of the fixed box (2); a dehumidifier (602) is fixedly mounted between the fixed frames (601); the dehumidifier (602) is electrically connected to a controller; a plurality of connecting pipes (603) are connected to the lower end surface of the dehumidifier (602); the lower ends of the connecting pipes (603) penetrate the fixed box (2) and are connected to contact heads (604); the contact heads (604) are in contact with the outer wall of the filter bag (301); both sides of the contact heads (604) are connected to air inlet pipes (605); and one side of the dehumidifier (602) is connected to a delivery pipe (606).

8. A high voltage distribution cabinet for a coal mine power supply system according to claim 7, characterized in that: A support plate (607) is fixedly and symmetrically mounted on the inner bottom end of the fixed box (2), a rolling wheel (608) is rotatably mounted between the support plates (607), the rolling wheel (608) is connected to the filter bag (301) by extrusion contact, and the rolling wheel (608) is connected to the rotating toothed belt (308) by transmission.

9. A high voltage distribution cabinet for a coal mine power supply system according to claim 7, characterized in that: The cabinet (1) further comprises a cooling assembly (7), wherein the cooling assembly (7) comprises a fixing box (701) fixedly mounted at the top end of the cabinet (1), the fixing box (701) being filled with cooling water, a ventilation copper tube being arranged in the fixing box (701), an air inlet (702) being fixedly mounted on one side of the fixing box (701), one end of the air inlet (702) passing through the fixing box (701) and being connected to the ventilation copper tube, an air outlet being arranged on the other side of the fixing box (701), the ventilation copper tube being connected to the air outlet, and the fixing box (701) 01) is connected to a circulation pipe (703) on one side, the circulation pipe (703) penetrates the cabinet (1) and extends to the outside, a cooling device (704) is fixedly installed in the circulation pipe (703), the cooling device (704) is composed of a cooling plate and a circulating water pump, the cooling device (704) is connected to the delivery pipe (606), a liquid isolation valve is embedded in the inner wall of the delivery pipe (606), the lower end surface of the cooling device (704) is connected to a drain port (705), and a pressure relief valve is fixedly installed on the inner wall of the drain port (705).

10. A high voltage distribution cabinet for a coal mine power supply system according to claim 7, characterized in that: The dehumidification assembly (8) further comprises a dehumidification assembly (8), the dehumidification assembly (8) comprising a reflux box (802) fixedly installed at the bottom end of the fixed box (2) and below the filter bag (301), the reflux box (802) comprising a long box and a square box connected to one side, the long box being connected to one side with a flow pipe (801), the flow pipe (801) being connected to a delivery pipe (606), a first solenoid valve (803) being embedded in the inner wall of the square box, and the upper end surface of the square box being in contact with the filter bag (301). The upper end surface of the square box is provided with a drying port, one side of the elongated box is connected with an exhaust pipe (804), a second solenoid valve is fixedly installed on the inner wall of the exhaust pipe (804), the first solenoid valve (803) and the second solenoid valve are electrically connected to the controller, a U-shaped bend pipe (805) is fixedly installed in the flow pipe (801), an opening valve (806) is embedded at the lower position of the outer wall of the U-shaped bend pipe (805), and absorbent cotton is fixedly installed on the inner wall of the U-shaped bend pipe (805).

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