Dust removal device for secondary protection of power system

Abstract

The invention relates to the technical field of electric power engineering, in particular to a dust removal device for secondary protection of an electric power system, which comprises an operation unit and a filter unit communicated with the operation unit, the operation unit comprises an inner pipe and an outer pipe, the outer pipe sleeves the periphery of the inner pipe, an annular gap is formed between the outer wall of the inner pipe and the inner wall of the outer pipe, a fan for communicating the inner pipe with the filter unit is arranged between the inner pipe and the filter unit, one end of the inner pipe far away from the filter unit is an air outlet, and one end of the annular gap far away from the filter unit is an air inlet; and after the fan blows the filtered gas in the filter unit out of the air outlet, the gas blown out is sucked by the annular gap through the air inlet and is discharged back to the filter unit. According to the dust removal device, during dust removal operation, the cleaning effect on dust attached to an electric power system can be guaranteed, meanwhile, blown dust is prevented from drifting everywhere, the dust removal device can adapt to a smaller operation environment, and the cleaning blind area is smaller.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power engineering, and in particular to a dust removal device for secondary protection of an electric power system. Background Art

[0002] After the power system has been working for a long time, it needs secondary protection. One of the tasks of secondary protection is to remove dust from the devices in the power system. The existing dust removal method mainly involves manual wiping of dust by staff, which increases the workload of staff.

[0003] Chinese patent publication No. CN214204595U discloses a dust removal device for secondary protection of an electric power system, comprising a base plate, a universal wheel with a brake fixedly connected to the lower surface of the base plate, a push rod fixedly connected to the back of the base plate, and an upper surface of the base plate fixedly connected to a collection box, a filter box, a first fan, a second fan and a battery, respectively, the back of the collection box and the side of the filter box are provided with mounting openings, the inner wall of the mounting opening is fixedly connected to a filter screen, the side of the collection box is rotatably connected to a movable door through a hinge, the front of the collection box is fixedly connected to a plastic clip, the number of the plastic clips is two, the inner ring surfaces of the two plastic clips are respectively clamped with a dust suction pipe and a dust removal pipe, a nozzle is provided on the surface of the dust removal pipe, the air inlet end and the air outlet end of the first fan are respectively fixedly connected to a first spring tube and a first delivery pipe, and the air inlet end and the air outlet end of the second fan are respectively fixedly connected to a second delivery pipe and a second spring tube.

[0004] The above scheme provides a device for dust removal of the power system, but when performing dust removal, it is necessary to blow air into the power system first, blow up the dust, and then absorb the dust through the dust suction pipe in the device. The blowing and suction processes require a corresponding fan respectively. When in use, it is necessary to reasonably control the power of the two fans. If there is a difference in the operating power of the two fans, the blown dust cannot be adsorbed in time or the external air will drive the debris to clog the end of the dust suction pipe. At the same time, since the dust removal pipe and the dust suction pipe are arranged side by side, the gas blown out of the dust removal pipe cannot be completely sucked away by the dust suction pipe after blowing up the dust, and the dust removal pipe and the dust suction pipe arranged side by side make it impossible to operate in a small space, such as a corner. Summary of the Invention

[0005] In order to solve the above problems, a dust removal device for secondary protection of power system is provided. By arranging an inner tube and an outer tube, the outer tube is sleeved on the outer periphery of the inner tube, and an annular gap is formed between the outer tube and the inner tube. When in use, the fan arranged at the end of the inner tube extracts the filtered air from the filter unit and discharges it through the inner tube. The filter unit forms a negative pressure and draws in the outside air through the annular gap. By setting up a fan, air circulation during dust removal can be achieved, and the air intake and air output are always equal, avoiding the external impurities from being sucked into the annular gap due to the difference between the air intake and air output. In the case where the annular gap is blocked, since the annular gap is annular in structure, the air inlet is arranged around the air outlet, and the air flow blown out from the air outlet spreads to all sides after lifting the dust, and the diffused dust will inevitably pass through the air inlet. Compared with the traditional industrial vacuum cleaner, the dust removal device of the present invention can not only ensure the cleaning effect of the dust attached to the power system during the dust removal operation, but also avoid the blown dust from floating everywhere, and the nested air inlet and air outlet are smaller in size, can adapt to a smaller operating environment, will not be blocked by the inner and outer tubes during cleaning, and the cleaning blind area is smaller.

[0006] In order to solve the problems of the prior art, the present invention provides a dust removal device for secondary protection of an electric power system, comprising an operating unit and a filter unit connected to the operating unit; the operating unit comprises an inner tube and an outer tube, the outer tube is sleeved on the periphery of the inner tube, and an annular gap is formed between the outer wall of the inner tube and the inner wall of the outer tube, a fan is provided between the inner tube and the filter unit to connect the two, the end of the inner tube away from the filter unit is an air outlet, and the end of the annular gap away from the filter unit is an air inlet; a filter screen is provided at the air inlet, and the filter screen is an annular structure; a plurality of arc grooves are evenly opened on the filter screen around the axis of the filter screen, and an air blowing unit that can blow airflow toward the filter screen is provided on the side of the filter screen facing the annular gap and rotates around the axis of the filter screen.

[0007] Preferably, the inner tube is composed of a connecting tube and a rotating tube, the two ends of the connecting tube are respectively connected to the air pump and the rotating tube, the connecting tube and the rotating tube rotate in coordination, a plurality of electromagnets that can be energized in sequence are evenly arranged on the end of the connecting tube close to the rotating tube, and a plurality of magnetic blocks that can be magnetically attracted by the electromagnets are evenly arranged on one end of the rotating tube close to the connecting tube, and the blowing unit rotates synchronously with the rotating tube.

[0008] Preferably, the blowing unit includes an extension rod fixedly arranged on the side wall of the rotating tube along the radial direction of the rotating tube, a ventilation groove communicating with the inner ring side of the rotating tube is opened on the extension rod along the radial direction of the rotating tube, a rotating sleeve is provided on the outer rotating sleeve of the extension rod, and a plurality of extension tubes are evenly arranged on the rotating sleeve around the axis of the rotating sleeve. The extension tube can communicate with the ventilation groove when the rotating sleeve rotates, and the extension tube communicating with the ventilation groove can extend into the arc groove.

[0009] Preferably, a plurality of spring pieces are evenly arranged on the outer wall of the rotating sleeve, a gear ring is arranged on the periphery of the rotating sleeve, and unidirectional helical teeth are evenly arranged on the inner ring of the gear ring. The spring pieces cooperate with the unidirectional helical teeth for unidirectional rotation, and the gear ring is fixedly arranged on the rotating tube.

[0010] Preferably, a diverter cover is fixedly arranged inside the rotating tube along the extension direction of the rotating tube, and the diverter cover divides the inside of the rotating tube into an outlet cavity for introducing gas into the outlet, and an air supply cavity arranged around the outer periphery of the outlet cavity, and the air supply cavity is connected to the ventilation groove.

[0011] Preferably, a blocking block capable of blocking the air outlet cavity is slidably provided in the air outlet cavity along the extending direction of the rotating tube, and a spring is provided at one end of the blocking block facing the air outlet along the moving direction of the blocking block.

[0012] Preferably, the filter unit includes a filter box connected to one end of the air pump away from the inner tube, clean water is stored in the filter box, an inlet pipe extending below the clean water level is provided at the end of the annular gap, a sponge is provided above the clean water level, an atomization cavity is provided between the sponge and the clean water, and an atomization nozzle is provided on the side wall of the atomization cavity.

[0013] Preferably, a condenser is provided on the upper portion of the sponge.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention sets an inner tube and an outer tube so that the outer tube is sleeved on the outer periphery of the inner tube, and an annular gap is formed between the outer tube and the inner tube. When in use, the fan set at the end of the inner tube extracts the filtered air from the filter unit and discharges it through the inner tube. The filter unit forms a negative pressure and draws in the outside air through the annular gap. By setting up a fan, air circulation during dust removal can be achieved, and the air intake and air output are always equal, avoiding the problem that a large amount of external impurities are sucked into the annular gap and blocked by the difference between the air intake and air output. Since the annular gap is annular in structure, the air inlet is arranged around the air outlet, and the airflow blown out of the air outlet spreads around after lifting the dust, and the spreading dust will inevitably pass through the air inlet. Compared with the traditional industrial vacuum cleaner, the dust removal device of the present invention can not only ensure the cleaning effect of the dust attached to the power system during the dust removal operation, but also avoid the blown dust from floating everywhere, and the nested air inlet and air outlet are smaller in size, can adapt to a smaller operating environment, will not be blocked by the inner and outer tubes during cleaning, and the cleaning blind spot is smaller.

[0015] 2. By setting up a filter screen and an air blowing unit, it is possible to prevent debris from entering the annular gap and blocking the filter screen. A plurality of arc-shaped grooves are provided on the filter screen, and the air blowing unit includes an extension tube that can be sequentially extended into the arc-shaped grooves. After the extension tube is extended into the arc-shaped groove, it can blow away the debris blocked in the arc-shaped groove, and at the same time, it can prevent the reverse flow of the annular gap from reducing the flow rate of the air flow blown out by the extension tube.

[0016] 3. By setting a blocking block on the air outlet cavity and setting a spring at one end of the blocking block, when the air pump supplies air, the gas is first discharged through the vent groove and the extension tube. However, the amount of air that can be discharged by the extension tube per unit time is small, resulting in the air pressure in the air supply cavity and the air outlet cavity continuously increasing, thereby pushing the blocking block. The spring is gradually compressed when the blocking block moves. When the blocking block slides out of the air outlet cavity, the air flow can be discharged from the air outlet cavity. Therefore, after the blocking block and the spring are set, the air pressure in the air supply cavity can be increased, thereby increasing the air flow speed discharged from the extension tube, and further improving the cleaning ability of the extension tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of a dust removal device for secondary protection of an electric power system according to the present invention.

[0018] Figure 2 It is a side view of a dust removal device for secondary protection of an electric power system according to the present invention.

[0019] Figure 3 The present invention is a dust removal device for secondary protection of power system Figure 2 Schematic cross-sectional view at AA in the middle.

[0020] Figure 4 The present invention is a dust removal device for secondary protection of power system Figure 3 A partial enlarged schematic diagram of point B in the middle.

[0021] Figure 5 It is a three-dimensional schematic diagram of an operating unit of a dust removal device for secondary protection of an electric power system according to the present invention.

[0022] Figure 6 The diagram is a side view of an operating unit of a dust removal device for secondary protection of an electric power system according to the present invention.

[0023] Figure 7 The present invention is a dust removal device for secondary protection of power system Figure 6 Schematic cross-sectional view at CC in the middle.

[0024] Figure 8 This is a cutaway perspective diagram of the operating unit of a dust removal device for secondary protection of a power system according to the present invention. Figure 1 .

[0025] Figure 9 The present invention is a dust removal device for secondary protection of power system Figure 8 A local enlarged schematic diagram of point D in the middle.

[0026] Figure 10 This is a cutaway perspective diagram of the operating unit of a dust removal device for secondary protection of a power system according to the present invention. Figure 2 .

[0027] Figure 11 The present invention is a dust removal device for secondary protection of power system Figure 10 A partial enlarged schematic diagram of point E in the middle.

[0028] Figure 12 It is a three-dimensional schematic diagram of an operating unit of a dust removal device for secondary protection of an electric power system of the present invention with the outer tube removed.

[0029] Figure 13 It is a three-dimensional schematic diagram of an air blowing unit of a dust removal device for secondary protection of an electric power system of the present invention, with the extension rod removed.

[0030] Figure 14 It is a three-dimensional schematic diagram of an operating unit of a dust removal device for secondary protection of an electric power system of the present invention, with the outer tube and the rotating sleeve removed.

[0031] Figure 15 The present invention is a dust removal device for secondary protection of power system Figure 14 A partial enlarged schematic diagram of point F in the middle.

[0032] The numbers in the figure are: 1. Operating unit; 11. Inner tube; 111. Connecting tube; 112. Rotating tube; 1121. Diverter hood; 1122. Air outlet cavity; 1123. Air supply cavity; 1124. Blocking block; 1125. Spring; 113. Electromagnetic block; 114. Magnetic block; 12. Outer tube; 121. Annular gap; 13. Fan; 14. Filter screen; 141. Arc groove; 142. Blowing unit; 1421. Extension rod; 1422. Ventilation groove; 1423. Rotating sleeve; 1424. Extension tube; 1425. Gear ring; 1426. Shrapnel; 2. Filter unit; 21. Filter box; 22. Inlet tube; 23. Sponge; 24. Atomizing nozzle; 25. Condensation tube DETAILED DESCRIPTION

[0033] In order to further understand the features, technical means, specific objectives and functions achieved by the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] Reference Figures 1-4: A dust removal device for secondary protection of an electric power system, comprising an operating unit 1 and a filter unit 2 connected to the operating unit 1; the operating unit 1 comprises an inner tube 11 and an outer tube 12, the outer tube 12 is sleeved on the outer periphery of the inner tube 11, and an annular gap 121 is formed between the outer wall of the inner tube 11 and the inner wall of the outer tube 12, a fan 13 is provided between the inner tube 11 and the filter unit 2 to connect the two, the end of the inner tube 11 away from the filter unit 2 is an air outlet, and the end of the annular gap 121 away from the filter unit 2 is an air inlet, after the fan 13 blows out the filtered gas in the filter unit 2 from the air outlet, the blown gas is sucked in through the air inlet by the annular gap 121 and discharged back to the filter unit 2.

[0035] When performing dust removal operations on the power system, an industrial vacuum cleaner is usually used. However, the existing industrial vacuum cleaner only has an air suction function. Although it can absorb the dust in the power system, the effect is poor. This is because the industrial vacuum cleaner with only an air suction function cannot blow up the dust attached to the corners of the power system, and there is a blind spot for cleaning. After cleaning, a large amount of dust still exists in the power system. In order to overcome the above problems, an industrial vacuum cleaner with both blowing and suction functions is designed in the prior art. However, the suction process and the blowing process are respectively acted on synchronously by two fans 13, which has a high cost of use and a high maintenance cost in the later stage. In addition, the suction process uses an air blower 13 to blow away the dust. The suction pipe used and the blowing pipe used in the blowing process are designed side by side, resulting in the dust raised by the blowing pipe gradually spreading in a circular shape after the gas is blown out, and only the dust close to the side of the suction pipe can be adsorbed. Dust often flies in the process of use, and the power of the two fans 13 during operation is difficult to be completely synchronized. If the operating power of the fan 13 used to drive the blowing is greater than the operating power of the fan 13 used to drive the suction, a large amount of dust will be blown up, and the suction pipe will not be able to suck away the raised dust in time, which will cause a large amount of dust to fly. The working environment around the staff during operation is poor, which has a greater impact on the health of the staff. If the operating power of the fan 13 used to drive the blowing is lower than the operating power of the fan 13 used to drive the suction, the dust attached to the power system cannot be effectively blown away, and the surrounding larger impurities such as plastic bags, plastic films, etc. will be sucked into the suction pipe, which may easily cause the suction pipe to be blocked and the dust removal effect is poor. At the same time, the suction pipe and the exhaust pipe arranged side by side will have visual and operational blind spots when cleaning the power system, and the area to be cleaned cannot be accurately cleaned during cleaning.

[0036] In order to avoid the above situation, the structure of the existing dust removal device is optimized so that only one fan 13 is used in the entire dust removal device, thereby reducing the use cost. At the same time, the working layout of the air outlet and air intake is also adjusted so that the dust removal device can adapt to a smaller working space during dust removal, thereby improving operability. The specific structure and working principle of the dust removal device of the present invention are as follows: The end face of the inner tube 11 away from the filter unit 2 is coplanar with the end face of the outer tube 12 away from the filter unit 2. When in use, the end of the inner tube 11 away from the filter unit 2 is extended into the power system, so that the inner tube 11 is close to the position where dust removal is required, and the end of the outer tube 12 moves synchronously with the end of the inner tube 11. Then the fan 13 is turned on, and the fan 13 extracts the filtered air in the filter unit 2 and discharges it into the inner tube 11. The air outlet of the inner tube 11 starts to blow out the airflow. Since the fan 13 extracts the gas from the filter unit 2, a negative pressure is formed in the filter unit 2. The annular gap 121 formed between the outer tube 12 and the inner tube 11 is also connected to the filter unit 2. The filter unit 2 draws in the outside air through the annular gap 121, and the air inlet draws the outside air into the annular gap 121. When the air outlet blows out the airflow, the blown airflow lifts up the dust and gradually spreads it to the surroundings. The annular gap 121 is an annular structure, so the air inlet is also arranged around the air outlet. The gas blown out from the air outlet will inevitably pass through the air inlet during the diffusion process, and the air inlet will absorb the blown dust in time. At the same time, since only one fan 13 is provided in the dust removal device of the present invention, even if the power of the fan 13 fluctuates during operation, there will be no difference in the air intake and air outlet volumes. This is because the amount of gas extracted from the filter unit 2 by the fan 13 is the same as the amount of gas inhaled by the filter unit 2 through the annular gap 121 in real time, which avoids the situation where dust is flying everywhere due to the power difference of the fan 13 when two fans 13 are set. At the same time, the traditional side-by-side arrangement of the air inlet and the air outlet is changed to a nested type, which has a better suppression effect on flying dust during dust removal operations, and can be operated in a compact environment, thereby improving the adaptability to the environment during dust collection operations and making operation more convenient.

[0037] By arranging the inner tube 11 and the outer tube 12, the outer tube 12 is sleeved on the outer periphery of the inner tube 11, and an annular gap 121 is formed between the outer tube 12 and the inner tube 11. When in use, the fan 13 arranged at the end of the inner tube 11 extracts the filtered air from the filter unit 2 and discharges it through the inner tube 11. The filter unit 2 forms a negative pressure and draws in the outside air through the annular gap 121. By arranging a fan 13, air circulation during dust removal can be achieved, and the air intake and air output are always equal, avoiding the external impurities from being sucked into the annular gap 121 and discharged due to the difference between the air intake and air output. In the case where the annular gap 121 is blocked, since the annular gap 121 is annular in structure, the air inlet is arranged around the air outlet, and the air flow blown out of the air outlet spreads to all sides after lifting the dust, and the spreading dust will inevitably pass through the air inlet. Compared with traditional industrial vacuum cleaners, the dust removal device of the present invention can not only ensure the cleaning effect of the dust attached to the power system during the dust removal operation, but also avoid the blown dust from floating everywhere, and the nested air inlet and air outlet are smaller in size, can adapt to a smaller operating environment, and will not be blocked by the inner tube 11 and the outer tube 12 during cleaning, and the cleaning blind area is smaller.

[0038] Reference Figure 5 and Figure 6 A filter screen 14 is provided at one end of the annular gap 121 away from the filter unit 2, and the filter screen 14 is an annular structure.

[0039] The end of the annular gap 121 away from the filter unit 2 is the air inlet. By arranging the filter net 14 at the air inlet, it is prevented that when the air inlet enters the external air, impurities with larger external size such as plastic bags, plastic films, etc. are sucked into the annular gap 121, thereby preventing the annular gap 121 from being blocked.

[0040] Reference Figure 5 : A plurality of arcuate grooves 141 are evenly provided on the filter 14 around the axis of the filter 14 , and an air blowing unit 142 capable of blowing air toward the filter 14 is provided on the side of the filter 14 facing the annular gap 121 and rotating around the axis of the filter 14 .

[0041] Although a filter 14 is provided at the air inlet to filter larger impurities, some larger impurities are adsorbed on the filter 14 under the action of the airflow at the air inlet, which causes the filter 14 to be blocked. The arc groove 141 provided on the filter 14 is used to intercept large dust, but does not have the function of intercepting dust. The dust raised in this way can smoothly enter the annular gap 121 through the arc groove 141. When large impurities adhere to the filter 14 during the dust removal action, the blowing unit 142 rotating in the annular gap 121 blows the airflow toward the arc groove 141 during rotation, so that the blowing unit 142 can clean the arc grooves 141 arranged on the filter 14 in turn, thereby avoiding the arc grooves 141 being blocked by large impurities.

[0042] Reference Figure 7 、 Figure 8 、 Figure 11 and Figure 12 : The inner tube 11 is composed of a connecting tube 111 and a rotating tube 112. The two ends of the connecting tube 111 are respectively connected to the air pump and the rotating tube 112. The connecting tube 111 and the rotating tube 112 rotate in coordination. A plurality of electromagnets that can be energized in sequence are evenly arranged on the end of the connecting tube 111 close to the rotating tube 112. A plurality of magnetic blocks 114 that can be magnetically attracted by the electromagnets are evenly arranged on one end of the rotating tube 112 close to the connecting tube 111. The blowing unit 142 rotates synchronously with the rotating tube 112.

[0043] During use, multiple electromagnets arranged on the connecting tube 111 are energized in sequence. The energized electromagnets adsorb the magnetic block 114 arranged on the rotating tube 112, thereby realizing the rotation coordination of the rotating tube 112 and the connecting tube 111. The blowing unit 142 is arranged on the rotating tube 112. After the rotating tube 112 rotates, the blowing unit 142 rotates synchronously with the rotating tube 112.

[0044] Reference Figure 12-15 : The blowing unit 142 includes an extension rod 1421 fixedly arranged on the side wall of the rotating tube 112 along the radial direction of the rotating tube 112, and a ventilation groove 1422 communicating with the inner ring side of the rotating tube 112 is opened on the extension rod 1421 along the radial direction of the rotating tube 112, and a rotating sleeve 1423 is provided on the outer rotating sleeve 1423 of the extension rod 1421, and a plurality of extension tubes 1424 are evenly arranged on the rotating sleeve 1423 around the axis of the rotating sleeve 1423, and the extension tube 1424 can communicate with the ventilation groove 1422 when the rotating sleeve 1423 rotates, and the extension tube 1424 communicating with the ventilation groove 1422 can extend into the arc groove 141.

[0045] A plurality of extension tubes 1424 are evenly arranged on the peripheral wall of the rotating sleeve 1423 around the axis of the rotating sleeve 1423. When the extension tubes 1424 are connected to the ventilation groove 1422, the extension tubes 1424 extend into the arc groove 141. At this time, the rotating sleeve 1423 and the extension rod 1421 are relatively stationary. When the extension tubes 1424 rotate and move to one end of the arc groove 141 along with the rotating tube 112, the end of the arc groove 141 pushes the extension tubes 1424 extending into the interior thereof, thereby causing the rotating sleeve 1423 and the extension rod 1421 to rotate and cooperate. The extension tubes 1424 are gradually disconnected from the ventilation groove 1422, and the extension tubes 1424 extending into the arc groove 141 are gradually pushed out of the arc groove 141 by the end of the arc groove 141. The extension tube 1424 slides out from the inside, and the extension tube 1424 adjacent to the extension tube 1424 slides into the next arc groove 141 synchronously, so that each extension tube 1424 can slide into a different arc groove 141 in turn, and only when the extension tube 1424 slides into the arc groove 141, the extension tube 1424 is connected with the ventilation groove 1422, so that the ventilation groove 1422 only supplies air to one extension tube 1424 at a time, ensuring that the extension tube 1424 sliding into the arc groove 141 has a faster air outlet speed, which can better blow away the impurities blocked in the arc groove 141. At the same time, the extension tube 1424 extends into the arc groove 141 to blow air, which can reduce the loss of the flow rate of the gas blown out of the extension tube 1424 due to the reverse flow in the annular gap 121.

[0046] Reference Figure 13-15 : A plurality of spring pieces 1426 are evenly arranged on the outer wall of the rotating sleeve 1423, and a gear ring 1425 is arranged on the periphery of the rotating sleeve 1423. One-way bevel teeth are evenly arranged on the inner ring of the gear ring 1425. The spring pieces 1426 cooperate with the one-way bevel teeth to rotate in one direction, and the gear ring 1425 is fixedly set on the rotating tube 112.

[0047] By arranging the spring piece 1426 and the gear ring 1425, the spring piece 1426 cooperates with the unidirectional helical teeth on the inner ring of the gear ring 1425 to rotate in one direction, so that the rotating sleeve 1423 can only rotate in one direction on the extension rod 1421, ensuring that the extension tube 1424 arranged on the rotating sleeve 1423 can accurately slide into the arc groove 141.

[0048] Reference Figure 7 : A diverter cover 1121 is fixedly arranged inside the rotating tube 112 along the extension direction of the rotating tube 112. The diverter cover 1121 divides the interior of the rotating tube 112 into an outlet cavity 1122 for introducing gas into the outlet, and an air supply cavity 1123 arranged around the outer periphery of the outlet cavity 1122. The air supply cavity 1123 is connected to the ventilation groove 1422.

[0049] The air pump pumps the filtered gas into the connecting tube 111 and then into the rotating tube 112. The gas flowing into the rotating tube 112 flows into the air supply cavity 1123 and the air outlet cavity 1122 respectively under the diversion of the diverter cover 1121. The air supply cavity 1123 supplies air to the ventilation groove 1422, thereby increasing the air outlet speed at the ventilation groove 1422.

[0050] Reference Figure 9 and Figure 10 : A blocking block 1124 is slidably provided in the air outlet cavity 1122 along the extension direction of the rotating tube 112, which can block the air outlet cavity 1122, and a spring 1125 is provided at one end of the blocking block 1124 toward the air outlet along the moving direction of the blocking block 1124.

[0051] By setting a blocking block 1124 on the air outlet cavity 1122 and setting a spring 1125 at one end of the blocking block 1124, when the air pump supplies air, the gas is first discharged through the vent groove 1422 and the extension tube 1424. However, the amount of air that can be discharged by the extension tube 1424 per unit time is small, resulting in the air pressure in the air supply cavity 1123 and the air outlet cavity 1122 continuously rising, thereby pushing the blocking block 1124, and the spring 1125 is gradually compressed when the blocking block 1124 moves. When the blocking block 1124 slides out of the air outlet cavity 1122, the air flow can be discharged from the air outlet cavity 1122. Therefore, after the blocking block 1124 and the spring 1125 are set, the air pressure in the air supply cavity 1123 can be increased, thereby increasing the air flow speed discharged from the extension tube 1424.

[0052] Reference Figure 2 and Figure 3 : The filter unit 2 includes a filter box 21 connected to one end of the air pump away from the inner tube 11, and clean water is stored in the filter box 21. An inlet pipe 22 extending below the clean water liquid level is provided at the end of the annular gap 121, and a sponge 23 is provided above the clean water liquid level. There is an atomization cavity between the sponge 23 and the clean water, and an atomizing nozzle 24 is provided on the side wall of the atomization cavity.

[0053] The annular cavity is discharged into the clean water of the filter box 21 through the inlet pipe 22. Most of the dust is intercepted by the clean water after entering the clean water, but some dust still rises with the gas. When the gas rises to the atomization chamber, the sponge 23 completely intercepts the dust, and the water mist sprayed by the atomization nozzle 24 in the atomization chamber can quickly capture the remaining dust and settle it with the dust after capturing.

[0054] Reference Figure 3 A condensation pipe 25 is provided on the upper portion of the sponge 23 .

[0055] When the power system is subjected to dust removal operation, a large amount of heat will be retained in the power system. The temperature of the gas flowing back to the filter box 21 through the annular gap 121 is relatively high. Although the clean water in the filter box 21 can be used for preliminary cooling, the cooling is limited, and the humidity of the air increases after passing through the clean water. By providing the condenser 25, the filtered air can be cooled and dehumidified before entering the air pump. This not only avoids the humidity of the blown air from being too high, but also can quickly cool the power system, thereby extending the service life of the power system.

[0056] Working principle: When in use, extend the end of the inner tube 11 away from the filter unit 2 into the power system, so that the inner tube 11 is close to the position where dust removal is required, and the end of the outer tube 12 moves synchronously with the end of the inner tube 11, and then turn on the fan 13, and the fan 13 extracts the filtered air in the filter unit 2 and discharges it into the inner tube 11, and the air outlet of the inner tube 11 starts to blow out the airflow. Since the fan 13 extracts gas from the filter unit 2, a negative pressure is formed in the filter unit 2, and the annular gap 121 formed between the outer tube 12 and the inner tube 11 is also connected to the filter unit 2. The filter unit 2 draws in the outside air through the annular gap 121, and the air inlet draws the outside air into the annular gap 121. When the air outlet blows out the airflow, the blown airflow lifts up the dust and gradually diffuses it to the surroundings. Since the annular gap 121 is a ring structure, This air inlet is also arranged around the air outlet. The gas blown out from the air outlet will inevitably pass through the air inlet during the diffusion process, and the air inlet will absorb the blown dust in time. At the same time, since only one fan 13 is provided in the dust removal device of the present invention, even if the power of the fan 13 fluctuates during operation, there will be no difference in the air intake and air outlet volumes. This is because the amount of gas extracted from the filter unit 2 by the fan 13 is the same as the amount of gas inhaled by the filter unit 2 through the annular gap 121 in real time, which avoids the situation where dust is flying everywhere due to the power difference of the fan 13 when two fans 13 are set. At the same time, the traditional side-by-side arrangement of the air inlet and air outlet is changed to a nested type, which has a better suppression effect on flying dust during dust removal operations, and can operate in a compact environment, thereby improving the adaptability to the environment during dust collection operations and making operation more convenient.

[0057] The above embodiments merely represent one or more embodiments of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of protection of the present invention. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present invention, and such modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the appended claims.

Claims

1. A dust removal device for secondary protection of a power system, comprising an operating unit (1) and a filter unit (2) connected to the operating unit (1); It is characterized by: The operating unit (1) comprises an inner tube (11) and an outer tube (12), the outer tube (12) being sleeved on the periphery of the inner tube (11), and an annular gap (121) being formed between the outer wall of the inner tube (11) and the inner wall of the outer tube (12), a fan (13) being provided between the inner tube (11) and the filter unit (2) to connect the two, the end of the inner tube (11) away from the filter unit (2) being an air outlet, and the end of the annular gap (121) away from the filter unit (2) being an air inlet; A filter screen (14) is provided at the air inlet, and the filter screen (14) is an annular structure; A plurality of arcuate grooves (141) are evenly provided on the filter screen (14) around the axis of the filter screen (14), and an air blowing unit (142) is provided on the side of the filter screen (14) facing the annular gap (121) and rotates around the axis of the filter screen (14) to blow air toward the filter screen (14).

2. The dust removal device for secondary protection of the power system according to claim 1, characterized in that: The inner tube (11) is composed of a connecting tube (111) and a rotating tube (112). Both ends of the connecting tube (111) are connected to the air pump and the rotating tube (112) respectively. The connecting tube (111) and the rotating tube (112) are rotated together. A plurality of electromagnets that can be energized in sequence are evenly arranged on the end of the connecting tube (111) close to the rotating tube (112). A plurality of magnetic blocks (114) that can be magnetically attracted by the electromagnets are evenly arranged on one end of the rotating tube (112) close to the connecting tube (111). The blowing unit (142) rotates synchronously with the rotating tube (112).

3. The dust removal device for secondary protection of the power system according to claim 2, characterized in that: The blowing unit (142) comprises an extension rod (1421) fixedly arranged on the side wall of the rotating tube (112) along the radial direction of the rotating tube (112); a ventilation groove (1422) communicating with the inner ring side of the rotating tube (112) is provided on the extension rod (1421) along the radial direction of the rotating tube (112); a rotating sleeve (1423) is provided on the outer peripheral rotating sleeve (1423) of the extension rod (1421); a plurality of extension tubes (1424) are evenly arranged on the rotating sleeve (1423) around the axis of the rotating sleeve (1423); the extension tubes (1424) can communicate with the ventilation groove (1422) when the rotating sleeve (1423) rotates, and the extension tubes (1424) communicating with the ventilation groove (1422) can extend into the arc groove (141).

4. The dust removal device for secondary protection of the power system according to claim 3, characterized in that: A plurality of spring pieces (1426) are evenly arranged on the outer wall of the rotating sleeve (1423), a gear ring (1425) is arranged on the periphery of the rotating sleeve (1423), and unidirectional helical teeth are evenly arranged on the inner ring of the gear ring (1425). The spring pieces (1426) cooperate with the unidirectional helical teeth to rotate in one direction, and the gear ring (1425) is fixedly arranged on the rotating tube (112).

5. The dust removal device for secondary protection of the power system according to claim 3, characterized in that: A flow divider (1121) is fixedly arranged inside the rotating tube (112) along the extension direction of the rotating tube (112). The flow divider (1121) divides the interior of the rotating tube (112) into an outlet cavity (1122) for introducing gas into the outlet, and an air supply cavity (1123) arranged around the periphery of the outlet cavity (1122). The air supply cavity (1123) is communicated with the ventilation groove (1422).

6. The dust removal device for secondary protection of the power system according to claim 5, characterized in that: A blocking block (1124) capable of blocking the air outlet cavity (1122) is slidably provided in the air outlet cavity (1122) along the extension direction of the rotating tube (112), and a spring (1125) is provided at one end of the blocking block (1124) facing the air outlet along the moving direction of the blocking block (1124).

7. The dust removal device for secondary protection of the power system according to claim 1, characterized in that: The filter unit (2) includes a filter box (21) connected to an end of the air pump away from the inner tube (11), wherein clean water is stored in the filter box (21), an inlet pipe (22) extending below the clean water level is provided at the end of the annular gap (121), a sponge (23) is provided above the clean water level, an atomizing cavity is provided between the sponge (23) and the clean water, and an atomizing nozzle (24) is provided on the side wall of the atomizing cavity.

8. The dust removal device for secondary protection of the power system according to claim 7, characterized in that: A condenser tube (25) is provided on the upper portion of the sponge (23).

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