A filtering device for purifying radioactive flue gas

Abstract

The present invention belongs to the technical field of radioactive flue gas filtration, and discloses a filtering device for purifying radioactive flue gas, including a filter box, a driving component, a trigger component and a driven component. The filter box has a driving component installed on the top, an air inlet is opened on the left side, and an air outlet is opened on the right side. The driven component is installed in the middle of the air outlet. The driving component has an annular trigger component installed inside, and the trigger component includes an annular fixture installed inside the driving component. The present invention sets an annular fixture and a regulator, which can be used to pump air into the regulator through an air pump when the gas flow rate increases, so that the blocking plate blocks the air inlet of the ventilation fan, reducing the total amount of gas entering the filter box, thereby ensuring that the incoming radioactive smoke can be effectively filtered by the filter, preventing the radioactive smoke from escaping into the surrounding environment, and improving the utilization rate of the filter.

Description

Technical Field

[0001] The invention belongs to the technical field of radioactive smoke filtration, and specifically relates to a filtering device for purifying radioactive smoke Background Art

[0002] Radioactive flue gas refers to flue gas containing radioactive substances. This type of flue gas mainly comes from certain industrial processes or the combustion of specific substances. In the process of mining, ore processing, fuel element manufacturing, etc., the air may carry dust and radon gas of natural radioactive isotopes, forming radioactive waste gas. If these waste gases are not properly treated during the emission process, they may cause harm to the environment and human health. The phosphate fertilizer absorbed by tobacco during its growth contains trace amounts of radioactive elements such as uranium, which decay to produce radioactive isotopes such as lead-210 and polonium-210. When tobacco burns, these radioactive isotopes are released into the smoke in gaseous form, forming radioactive flue gas.

[0003] In the prior art, radioactive flue gas is usually purified by filtering, adsorption, washing and other technologies. When using filtering equipment for purification, the filtering capacity of the filter is limited. During filtering, it is necessary to ensure that the amount of radioactive flue gas entering matches the filtering capacity of the filter. However, in actual use, the flow rate and flow of the radioactive flue gas are affected by many factors, resulting in unstable flow rate and flow of the flue gas. This results in the filter being unable to fully purify the radioactive substances in the flue gas when the flue gas flow rate is accelerated, causing the radioactive flue gas to overflow the filter device, affecting the surrounding environment and damaging human health. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a filtering device for purifying radioactive flue gas, which solves the problem of unstable flue gas flow rate in the flue gas filtering device in the prior art.

[0005] The object of the present invention can be achieved by the following technical solution: A filtering device for purifying radioactive smoke, comprising a filtering box, a driving component, a triggering component and a driven component;

[0006] The filter box has a driving assembly installed on the top, an air inlet is opened on the left side, an air outlet is opened on the right side, and the driven assembly is installed in the middle of the air outlet;

[0007] A driving assembly having a ring-shaped trigger assembly installed therein;

[0008] The trigger assembly includes an annular holder installed inside the driving assembly, and covers are installed at both ends of the annular holder, and magnets are installed on one side of the two covers, and the outer walls of the two covers are provided with penetrating vents;

[0009] An air pump is installed through the top of the annular fixer, an air inlet hole is provided on the outer wall of the air pump, an exhaust hole is provided on the top of the air pump, a connecting pipe is installed on the outer wall of the air pump, and the diameter of the connecting pipe is three times the diameter of the exhaust hole, a lifting rod is installed through the bottom of the air pump, the bottom of the lifting rod extends out of the bottom of the annular fixer, a first spring is installed around the outer wall of the lifting rod, the bottom of the first spring is fixedly connected to the inner bottom wall of the air pump, and an extrusion plate is installed on the top of the lifting rod.

[0010] In some disclosures, dust boxes are installed on both outer walls of the filter box, and a first filter screen and a second filter screen are installed on the inner wall of the filter box, the second filter screen is close to the air outlet, and the first filter screen is close to the air inlet.

[0011] In some disclosures, the driven assembly includes four fixed rods installed at the air outlet, a rotating shaft is installed at one end of the fixed rod through a bushing, blades are installed around the outer wall of the rotating shaft, two support rods are installed on the outer wall of the rotating shaft close to the second filter screen through a bushing, the bottoms of the two support rods are fixedly connected to the inner bottom wall of the filter box, and a knocking rod is rotatably connected between the two support rods through a bearing.

[0012] In some disclosures, a ball is installed at one end of the knocking rod, a U-shaped intercepting rod is installed on the outer wall of the supporting rod, an impact rod is installed on the outer wall of the rotating shaft, a fixing plate is installed on the outer wall of the supporting rod, a vertical rod is installed through the top of the fixing plate, a second spring is installed around the outer wall of the vertical rod, one end of the second spring is fixedly connected to the bottom of the fixing plate, and the vertical rod and the knocking rod are in the same plane.

[0013] In some disclosures, the drive assembly includes a protective shell fixedly mounted on the top of the filter box, a drive shaft is mounted on the inner walls of both sides of the protective shell through bushings, a belt is mounted around the outer wall of the drive shaft, and the drive shaft is connected to the rotating shaft through a pulley and a belt drive.

[0014] In some disclosures, a No. 1 gear is fixedly mounted on the outer wall of the driving shaft, a plurality of stabilizing plates are mounted on the inner bottom wall of the protective shell, a No. 1 and a half-tooth gear are mounted on the outer wall of the stabilizing plate through the shaft, the No. 1 and the half-tooth gear are meshed with the No. 1 gear, a torsion spring is mounted on the outer wall of the No. 1 and the half-tooth gear, a No. 1 cleaning rod is mounted on the outer wall of the No. 1 and the half-tooth gear, a No. 2 gear is fixedly mounted on the outer wall of the driving shaft, a No. 3 gear and a No. 2 and a half-tooth gear are rotatably mounted directly below the No. 2 gear through a stabilizing plate, a No. 2 cleaning rod is mounted on the outer wall of the No. 2 and the outer walls of the No. 1 and the No. 2 cleaning rods are both mounted with brushes, the No. 1 cleaning rod is located on the side of the second filter screen close to the air inlet, and the No. 2 cleaning rod is located on the side of the first filter screen close to the air inlet.

[0015] In some disclosures, the outer wall of the drive shaft inside the annular fixer is provided with a plurality of grooves, the inner wall of the groove is provided with a fourth spring, a telescopic column is provided at one end of the fourth spring, and a coil is provided on the inner wall of the telescopic column.

[0016] In some disclosures, a disc is installed at one end of the driving shaft, a fixed column is installed on the outer wall of the disc, a fixed shaft is installed on the inner wall of one side of the protective shell, a rotating plate is rotatably installed on the outer wall of the fixed shaft, a sliding groove is provided on the outer wall of the rotating plate, and the fixed column is located inside the sliding groove, an adjusting shaft is installed on the inner bottom wall of the filter box, a guide plate is installed on the outer wall of the adjusting shaft, and the guide plate is located on the side of the first filter screen close to the air inlet.

[0017] In some disclosures, a ventilation fan is installed on the inner bottom wall of the filter box, the ventilation fan is located on one side of the filter box close to the air inlet, a regulator is installed on the top of the ventilation fan, and an electric heating plate is installed on the outer wall of the ventilation fan.

[0018] In some disclosures, a sealing plate is installed on the inner wall of the regulator, a blocking plate is installed on the bottom of the sealing plate, a return spring is installed on the top of the sealing plate, an air inlet pipe is installed on the top of the regulator, and the air inlet pipe is connected to one end of the connecting pipe.

[0019] The nouns, conjunctions or adjectives involved in the above technical solution are explained as follows:

[0020] A fixed connection is one where the parts or components are fixed without any relative movement;

[0021] A rotational connection is a connection between parts that allows the parts to rotate relative to each other;

[0022] Threaded connection is a detachable fixed connection with the advantages of simple structure, reliable connection, and convenient assembly and disassembly. It is widely used in the fields of mechanical engineering and connection structures.

[0023] A sliding connection is a connection between parts that allows the parts to slide against each other.

[0024] Beneficial effects of the present invention:

[0025] 1. The present invention can provide an annular fixer and a regulator to pump air into the regulator through an air pump when the gas flow rate increases, so that the blocking plate blocks the air inlet of the ventilation fan, reducing the total amount of gas entering the filter box, thereby ensuring that the incoming radioactive smoke can be effectively filtered by the filter, preventing the radioactive smoke from escaping into the surrounding environment, and improving the utilization rate of the filter;

[0026] 2. The present invention can drive the knocking rod and the cleaning rod to clean the filter by setting the driving shaft and the rotating shaft, sweeping away the particles and debris on the surface of the filter, preventing the filter from being blocked, increasing the service life of the filter, and reducing the number of times the filter is replaced;

[0027] 3. The present invention can guide radioactive smoke through the disc and the guide plate. The guide plate can guide the radioactive smoke to the two sides, i.e., the edges of the filter screen during filtering, thereby effectively utilizing the edges of the filter screen and reducing the waste of resources. At the same time, it can also effectively slow down the speed of dust accumulation at the center of the filter screen and extend the service life of the filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] 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 description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present invention;

[0030] Figure 2 is a schematic diagram of the internal structure of the filter box according to an embodiment of the present invention;

[0031] Figure 3 is a schematic diagram of the structure of a protective shell portion of an embodiment of the present invention;

[0032] Figure 4 is a schematic diagram of the structure of the rotating shaft and the driving shaft of an embodiment of the present invention;

[0033] Figure 5 The embodiment of the present invention Figure 4 Schematic diagram of the structure of part A;

[0034] Figure 6 The embodiment of the present invention Figure 4 Schematic diagram of the structure of part B;

[0035] Figure 7 is a schematic cross-sectional structure diagram of an annular limiter according to an embodiment of the present invention;

[0036] Figure 8 is a schematic diagram of a cover plate portion of an embodiment of the present invention;

[0037] Fig. 9 Schematic diagram of the regulator part of the embodiment of the present invention.

[0038] In the figure: 1. filter box; 11. dust box; 12. air outlet; 13. air inlet; 14. first filter; 15. second filter; 2. driven assembly; 20. fixed rod; 21. rotating shaft; 22. blade; 23. support rod; 3. knock rod; 31. ball; 32. intercepting rod; 33. impact rod; 34. fixed plate; 35. vertical rod; 36. second spring; 4. driving assembly; 40. protective shell; 41. driving shaft; 42. belt; 43. gear No. 1; 44. stabilizing plate; 45. torsion spring; 46. half-tooth gear No. 1; 47. cleaning rod No. 1; 48. gear No. 2; 49. gear No. 3; 410. gear No. 2 No. 411, cleaning rod No. 2; 5, trigger assembly; 50, annular fixer; 51, cover plate; 52, magnet; 53, vent; 54, air pump; 55, air inlet; 56, air outlet; 57, connecting pipe; 58, lifting rod; 59, first spring; 510, extrusion plate; 6, groove; 61, fourth spring; 62, telescopic column; 63, coil; 7, disc; 71, fixed column; 72, fixed shaft; 73, rotating plate; 74, adjusting shaft; 75, guide plate; 8, ventilation fan; 81, regulator; 82, electric heating plate; 83, sealing plate; 84, blocking plate; 85, reset spring; 86, air inlet pipe. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0040] See also Figure 1 , Figure 2 , Figure 4 , Figure 7 , Figure 8 and Fig. 9A filtering device for purifying radioactive flue gas comprises a filtering box 1, a driving assembly 4, a trigger assembly 5 and a driven assembly 2. The filtering box 1 is provided with a driving assembly 4 on the top, an air inlet 13 is provided on the left side, and an air outlet 12 is provided on the right side. The driven assembly 2 is installed in the middle of the air outlet 12. The driving assembly 4 is provided with an annular trigger assembly 5 inside. The trigger assembly 5 comprises an annular fixture 50 installed inside the driving assembly 4. Cover plates 51 are provided at both ends of the annular fixture 50. Magnets 52 are provided on one side of the two cover plates 51. Ventilation holes 53 are provided through the outer walls of the two cover plates 51. An air pump 54 is provided through the top of the annular fixture 50. An air inlet 55 is provided on the outer wall of the air pump 54. An exhaust hole 56 is provided on the top of the air pump 54. A connecting pipe 57 is provided on the outer wall of the air pump 54. The diameter of the connecting pipe 57 is three times the diameter of the exhaust hole 56. A lifting rod 58 is provided through the bottom of the air pump 54. The bottom of the lifting rod 58 extends out of the bottom of the annular fixer 50, and a first spring 59 is installed around the outer wall of the lifting rod 58. The bottom of the first spring 59 is fixedly connected to the inner bottom wall of the air pump 54. An extrusion plate 510 is installed on the top of the lifting rod 58. A ventilation fan 8 is installed on the inner bottom wall of the filter box 1. The ventilation fan 8 is located on the side of the filter box 1 close to the air inlet 13. A regulator 81 is installed on the top of the ventilation fan 8, and an electric heating plate 82 is installed on the outer wall of the ventilation fan 8. A sealing plate 83 is installed on the inner wall of the regulator 81, a blocking plate 84 is installed on the bottom of the sealing plate 83, a return spring 85 is installed on the top of the sealing plate 83, an air intake pipe 86 is installed on the top of the regulator 81, and the air intake pipe 86 is connected to one end of the connecting pipe 57, a plurality of grooves 6 are provided on the outer wall of the driving shaft 41 located inside the annular fixer 50, a fourth spring 61 is installed on the inner wall of the groove 6, a telescopic column 62 is installed on one end of the fourth spring 61, and a coil 63 is provided on the inner wall of the telescopic column 62.

[0041] Specifically, when the flow rate of the radioactive smoke increases, the blades 22 drive the rotating shaft 21 to rotate faster, thereby driving the driving shaft 41 to rotate faster. When the driving shaft 41 rotates faster, the centrifugal force increases. At this time, the telescopic column 62 extends from the groove 6, and the fourth spring 61 extends. The telescopic column 62 rotates with the driving shaft 41, and the telescopic column 62 squeezes the lifting rod 58. The lifting rod 58 drives the squeezing plate 510 to rise, and the first spring 59 extends. When the squeezing plate 510 is in a low position, it is located below the air inlet 55, and the air enters the interior of the air pump 54 through the vent 53. Then the squeezing plate 510 squeezes the air, and a small part of the air is released. Most of the air flows out from the exhaust hole 56, and enters the inside of the regulator 81 through the connecting pipe 57 and the air inlet pipe 86. As the telescopic column 62 reciprocates and impacts the lifting rod 58, the air in the air pump 54 is continuously transported to the inside of the regulator 81, and the air pressure above the sealing plate 83 increases, pushing the sealing plate 83 and the blocking plate 84 below to move downward. The blocking plate 84 enters the air outlet of the ventilation fan 8 to block the radioactive smoke, so that the total amount of radioactive smoke entering the filter box 1 remains unchanged, preventing the filter from being unable to completely filter the radioactive smoke when the flow rate is too fast;

[0042] In addition, the telescopic column 62 is extended out of the groove 6 by the centrifugal force, and the coil 63 cuts the magnetic flux generated by the magnet 52 as the drive shaft 41 rotates, thereby generating an induced current inside the coil. The induced current is electrically connected to the electric heating plate 82 on the outer wall of the ventilation fan 8 through a wire, so that the electric heating plate 82 works to heat the radioactive flue gas. The reason for this is that the increase in the flow rate of the radioactive flue gas will first increase the total amount of gas entering the filter box 1, resulting in the filter screen being unable to completely filter the radioactive substances in the flue gas. Therefore, it is necessary to reduce the total amount of gas entering the filter box 1 through the blocking plate 84, so that the filter box The total amount of gas inside the body 1 does not exceed the filtering capacity of the filter. At the same time, the increase in the flow rate of the radioactive flue gas will cause the temperature of the flue gas to decrease. The temperature reduction will cause the thermal motion of the molecules in the flue gas to decrease, resulting in poor dispersion of small molecules and particulate matter in the radioactive flue gas, which will easily cause the filter to be blocked. Reducing the air outlet aperture of the ventilation fan 8 by the blocking plate 84 will also increase the flow rate of the radioactive flue gas, so that the temperature of the radioactive flue gas will be reduced again. Therefore, while reducing the air intake, the radioactive flue gas must be heated to increase the temperature of the radioactive flue gas and the speed of the thermal motion of the molecules in the flue gas, so as to facilitate filtering by the filter.

[0043] See also Figure 1 and Figure 2 Dust boxes 11 are installed on both side outer walls of the filter box 1, and a first filter screen 14 and a second filter screen 15 are installed on the inner wall of the filter box 1. The second filter screen 15 is close to the air outlet 12, and the first filter screen 14 is close to the air inlet 13.

[0044] Specifically, after the radioactive flue gas enters the filter box 1 through the air inlet 13 , it passes through the first filter 14 and the second filter 15 in sequence to filter and purify the particulate matter and radioactive substances in the radioactive flue gas, and then the purified gas is discharged from the air outlet 12 .

[0045] See also Figure 1 , Figure 2 , Figure 4 and Figure 5 The driven assembly 2 includes four fixed rods 20 installed at the air outlet 12, one end of the fixed rod 20 is installed with a rotating shaft 21 through a sleeve, the outer wall of the rotating shaft 21 is surrounded by a blade 22, and the outer wall of the rotating shaft 21 close to the second filter screen 15 is installed with two support rods 23 through a sleeve, the bottom of the two support rods 23 is fixedly connected to the inner bottom wall of the filter box body 1, and a knocking rod 3 is rotatably connected between the two support rods 23 through a bearing, one end of the knocking rod 3 is installed with a ball 31, the outer wall of the support rod 23 is installed with a U-shaped intercepting rod 32, the outer wall of the rotating shaft 21 is installed with an impact rod 33, and the outer wall of the support rod 23 is installed with a fixed plate 34, a vertical rod 35 is installed through the top of the fixed plate 34, and a second spring 36 is installed around the outer wall of the vertical rod 35, one end of the second spring 36 is fixedly connected to the bottom of the fixed plate 34, and the vertical rod 35 and the knocking rod 3 are in the same plane.

[0046] Specifically, the filtered and purified gas drives the blades 22 to rotate, and then drives the rotating shaft 21 to rotate. The rotation of the rotating shaft 21 drives the impact rod 33 to rotate. When the impact rod 33 rotates, it squeezes the vertical rod 35. The vertical rod 35 descends and drives the second spring 36 to expand and contract. When the vertical rod 35 descends, it squeezes one end of the knocking rod 3, so that one end of the knocking rod 3 is tilted. Then the vertical rod 35 rises driven by the second spring 36, and the ball 31 hits the surface of the second filter screen 15, causing the second filter screen 15 to vibrate, and the dust and particulate matter adsorbed on the surface of the second filter screen 15 is shaken off, thereby increasing the service life of the filter screen. The intercepting rod 32 blocks the knocking rod 3.

[0047] See also Figure 1 , Figure 3 , Figure 4 and Figure 6The driving assembly 4 includes a protective shell 40 fixedly mounted on the top of the filter housing 1, a driving shaft 41 is mounted on the inner walls of both sides of the protective shell 40 through a shaft sleeve, a belt 42 is mounted around the outer wall of the driving shaft 41, and the driving shaft 41 is connected to the rotating shaft 21 through a pulley and a belt 42, a No. 1 gear 43 is fixedly mounted on the outer wall of the driving shaft 41, a plurality of stabilizing plates 44 are mounted on the inner bottom wall of the protective shell 40, a No. 1 half-tooth gear 46 is mounted on the outer wall of the stabilizing plate 44 through a shaft, the No. 1 half-tooth gear 46 is meshed with the No. 1 gear 43, and a torque Spring 45, a No. 1 cleaning rod 47 is installed on the outer wall of the No. 1 semi-toothed gear 46, a No. 2 gear 48 is fixedly installed on the outer wall of the driving shaft 41, a No. 3 gear 49 and a No. 2 semi-toothed gear 410 are rotatably installed directly below the No. 2 gear 48 through a stabilizing plate 44, a No. 2 cleaning rod 411 is installed on the outer wall of the No. 2 semi-toothed gear 410, brushes are installed on the outer walls of the No. 1 cleaning rod 47 and the No. 2 cleaning rod 411, and the No. 1 cleaning rod 47 is located on the side of the second filter screen 15 close to the air inlet 13, and the No. 2 cleaning rod 411 is located on the side of the first filter screen 14 close to the air inlet 13;

[0048] In addition, the device can also install scrapers at the bottom ends of the two cleaning rods. When the cleaning rods swing left and right, the dust and debris accumulated on the bottom wall of the filter box 1 are swept into the dust boxes 11 on the left and right sides respectively to collect the dust.

[0049] Specifically, when the rotating shaft 21 rotates, the driving shaft 41 is driven to rotate through the belt 42, and the rotation of the driving shaft 41 drives the No. 1 gear 43 to rotate, and the No. 1 gear 43 drives the No. 1 semi-toothed gear 46 to rotate. When the No. 1 gear 43 and the No. 1 semi-toothed gear 46 are no longer meshed, the torsion spring 45 drives the No. 1 semi-toothed gear 46 to return to its original position, so that the No. 1 cleaning rod 47 swings on one side of the second filter screen 15, and the second filter screen 15 is cleaned by the brush on the outer surface of the No. 1 cleaning rod 47, thereby improving the service life of the filter screen. Similarly, the No. 2 gear 48 meshes and rotates with the No. 2 semi-toothed gear 410 through the No. 3 gear 49, and the No. 2 semi-toothed gear 410 is also rotated to the initial position by the torsion spring 45, so that the No. 2 cleaning rod 411 swings on the outside of the first filter screen 14, and the dust and particulate matter on the surface of the first filter screen 14 are cleaned, thereby improving the service life of the filter screen.

[0050] See also Figure 4 A disc 7 is installed at one end of the driving shaft 41, a fixing column 71 is installed on the outer wall of the disc 7, a fixing shaft 72 is installed on the inner wall of one side of the protective shell 40, a rotating plate 73 is rotatably installed on the outer wall of the fixing shaft 72, a sliding groove is provided on the outer wall of the rotating plate 73, and the fixing column 71 is located inside the sliding groove, an adjusting shaft 74 is installed on the inner bottom wall of the filter box 1, a guide plate 75 is installed on the outer wall of the adjusting shaft 74, and the guide plate 75 is located on the side of the first filter screen 14 close to the air inlet 13.

[0051] Specifically, the driving shaft 41 rotates to drive the disc 7 and the fixed column 71 to rotate, and the fixed column 71 rotates in the slide groove of the rotating plate 73, driving the rotating plate 73 to swing. The bottom of the rotating plate 73 is engaged with the guide plate 75. When the rotating plate 73 swings, it drives the guide plate 75 to swing left and right with the adjustment shaft 74 as the center. When the radioactive flue gas passes through the guide plate 75, it will be guided by the guide plate 75. The guide plate 75 guides the radioactive flue gas to blow to both sides of the filter screen, thereby increasing the utilization rate of the filter screen edge.

[0052] In existing equipment, the filter is usually directly opposite to the pipe, which causes the dust to accumulate at the center of the filter several times faster than at the edge of the filter. Generally speaking, when the center of the filter is blocked or the filtering effect decreases, the filter needs to be replaced. However, the edge of the filter still has a strong filtering capacity. At this time, replacing the filter will cause part of the filtering capacity of the filter to be wasted, resulting in a waste of resources. The guide plate 75 in the present application can guide the radioactive flue gas to the two sides, i.e., the edges of the filter during filtering, thereby effectively utilizing the edges of the filter and reducing the waste of resources. At the same time, it can also effectively slow down the dust accumulation rate at the center of the filter and extend the service life of the filter.

[0053] Working principle: first, the ventilation fan 8 transports the radioactive smoke to the interior of the filter box 1, and then the rotating plate 73 swings to drive the guide plate 75 to swing left and right with the adjustment shaft 74 as the center. When the radioactive smoke passes through the guide plate 75, it will be guided by the guide plate 75, and the guide plate 75 guides the radioactive smoke to blow to both sides of the filter. Then the No. 1 cleaning rod 47 swings on one side of the second filter 15, and the second filter 15 is cleaned by the brush on the outer surface of the No. 1 cleaning rod 47. The No. 2 cleaning rod 411 swings on the outside of the first filter 14 to clean the dust and particles on the surface of the first filter 14. The ball 31 hits the surface of the second filter 15, causing the second filter 15 to vibrate, and the dust and particles adsorbed on the surface of the second filter 15 are shaken off, thereby increasing the service life of the filter. Finally, the telescopic column 62 moves along the drive shaft 41 Rotate, the telescopic column 62 squeezes the lifting rod 58, and the lifting rod 58 drives the squeezing plate 510 to rise, and the first spring 59 extends. When the squeezing plate 510 is in a low position, it is located below the air inlet 55, and the air enters the interior of the air pump 54 through the air vent 53. Then the squeezing plate 510 squeezes the air, and a small part of the air flows out from the exhaust hole 56, and most of the air enters the interior of the regulator 81 through the connecting pipe 57 and the air inlet pipe 86. As the telescopic column 62 reciprocates and impacts the lifting rod 58, the air in the air pump 54 is continuously transported to the interior of the regulator 81, and the air pressure above the sealing plate 83 increases, pushing the sealing plate 83 and the blocking plate 84 below to move downward, and the blocking plate 84 enters the air outlet of the ventilation fan 8 to block the radioactive smoke, so that the total amount of radioactive smoke entering the filter box 1 remains unchanged.

[0054] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0055] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A filtering device for purifying radioactive flue gas, characterized in that: It comprises a filter housing (1), a driving component (4), a trigger component (5) and a driven component (2); The filter box (1) has a driving assembly (4) mounted on the top, an air inlet (13) on the left side and an air outlet (12) on the right side, and the driven assembly (2) is mounted in the middle of the air outlet (12); A driving assembly (4) having an annular trigger assembly (5) installed therein; The trigger assembly (5) comprises an annular holder (50) installed inside the driving assembly (4), with cover plates (51) installed at both left and right ends of the annular holder (50), magnets (52) installed on both cover plates (51) located on one side of the annular holder (50), and ventilation holes (53) penetrating therethrough are provided on the outer walls of the two cover plates (51); An air pump (54) is installed through the top of the annular fixer (50), an air inlet hole (55) is provided on the outer wall of the air pump (54), an exhaust hole (56) is provided on the top of the air pump (54), a connecting pipe (57) is installed on the outer wall of the air pump (54), and the diameter of the connecting pipe (57) is three times the diameter of the exhaust hole (56), a lifting rod (58) is installed through the bottom of the air pump (54), the bottom of the lifting rod (58) extends out of the bottom of the annular fixer (50), a first spring (59) is installed around the outer wall of the lifting rod (58), the bottom of the first spring (59) is fixedly connected to the inner bottom wall of the air pump (54), and an extrusion plate (510) is installed on the top of the lifting rod (58), and the driving assembly (4) includes a protective shell (40) fixedly installed on the top of the filter box (1), and the inner walls of both sides of the protective shell (40) are installed with drive sleeves. A driving shaft (41) is provided on an outer wall of the driving shaft (41) located inside the annular holder (50), and a plurality of grooves (6) are formed thereon; a fourth spring (61) is mounted on the inner wall of the groove (6); a telescopic column (62) is mounted on one end of the fourth spring (61); a ventilation fan (8) is mounted on the inner bottom wall of the filter housing (1); the ventilation fan (8) is located on a side of the filter housing (1) close to the air inlet (13); a regulator (81) is mounted on the top of the ventilation fan (8); an electric heating plate (82) is mounted on the outer wall of the ventilation fan (8); a sealing plate (83) is mounted on the inner wall of the regulator (81); a blocking plate (84) is mounted on the bottom of the sealing plate (83); a return spring (85) is mounted on the top of the sealing plate (83); an air intake pipe (86) is mounted on the top of the regulator (81); and the air intake pipe (86) is connected to one end of the connecting pipe (57).

2. A filtering device for purifying radioactive flue gas according to claim 1, characterized in that: Dust boxes (11) are installed on both side outer walls of the filter box (1), and a first filter screen (14) and a second filter screen (15) are installed on the inner wall of the filter box (1), respectively, the second filter screen (15) is close to the air outlet (12), and the first filter screen (14) is close to the air inlet (13).

3. The filtering device for purifying radioactive flue gas according to claim 1, characterized in that: The driven assembly (2) comprises four fixed rods (20) mounted on the air outlet (12); a rotating shaft (21) is mounted on one end of the fixed rod (20) via a shaft sleeve; a blade (22) is mounted around the outer wall of the rotating shaft (21); two supporting rods (23) are mounted on the outer wall of the rotating shaft (21) on a side close to the second filter screen (15) via a shaft sleeve; the bottoms of the two supporting rods (23) are fixedly connected to the inner bottom wall of the filter box (1); and a knocking rod (3) is rotatably connected between the two supporting rods (23) via a bearing.

4. A filtering device for purifying radioactive flue gas according to claim 3, characterized in that: A spherical ball (31) is mounted on one end of the knocking rod (3), a U-shaped intercepting rod (32) is mounted on the outer wall of the support rod (23), an impact rod (33) is mounted on the outer wall of the rotating shaft (21), a fixing plate (34) is mounted on the outer wall of the support rod (23), a vertical rod (35) is mounted through the top of the fixing plate (34), a second spring (36) is mounted around the outer wall of the vertical rod (35), one end of the second spring (36) is fixedly connected to the bottom of the fixing plate (34), and the vertical rod (35) and the knocking rod (3) are in the same plane.

5. The filtering device for purifying radioactive flue gas according to claim 1, characterized in that: A belt (42) is installed around the outer wall of the driving shaft (41), and the driving shaft (41) is connected to the rotating shaft (21) via a pulley and a belt (42).

6. A filtering device for purifying radioactive flue gas according to claim 5, characterized in that: A first gear (43) is fixedly mounted on the outer wall of the driving shaft (41); a plurality of stabilizing plates (44) are mounted on the inner bottom wall of the protective shell (40); a first semi-toothed gear (46) is mounted on the outer wall of the stabilizing plate (44) via a shaft; the first semi-toothed gear (46) is meshed with the first gear (43); a torsion spring (45) is mounted on the outer wall of the first semi-toothed gear (46); a first cleaning rod (47) is mounted on the outer wall of the first semi-toothed gear (46); and a second gear (48) is fixedly mounted on the outer wall of the driving shaft (41). A third gear (49) and a second half-tooth gear (410) are rotatably mounted directly below the second gear (48) via a stabilizing plate (44); a second cleaning rod (411) is mounted on the outer wall of the second half-tooth gear (410); brushes are mounted on the outer walls of the first cleaning rod (47) and the second cleaning rod (411); the first cleaning rod (47) is located on a side of the second filter (15) close to the air inlet (13), and the second cleaning rod (411) is located on a side of the first filter (14) close to the air inlet (13).

7. A filtering device for purifying radioactive flue gas according to claim 6, characterized in that: The inner wall of the telescopic column (62) is provided with a coil (63).

8. The filtering device for purifying radioactive flue gas according to claim 5, characterized in that: A disc (7) is mounted on one end of the driving shaft (41), a fixing column (71) is mounted on the outer wall of the disc (7), a fixing shaft (72) is mounted on the inner wall of one side of the protective shell (40), a rotating plate (73) is rotatably mounted on the outer wall of the fixing shaft (72), a sliding groove is provided on the outer wall of the rotating plate (73), and the fixing column (71) is located inside the sliding groove, an adjusting shaft (74) is mounted on the inner bottom wall of the filter box (1), a guide plate (75) is mounted on the outer wall of the adjusting shaft (74), and the guide plate (75) is located on a side of the first filter screen (14) close to the air inlet (13).

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