Radioactive air filtering device

Abstract

The invention discloses a radioactive air filtering device, and relates to the technical field of radioactive gas treatment. Comprising a particle impurity removal mechanism, a spraying mechanism and an adsorption mechanism, the particle impurity removal mechanism comprises an impurity removal barrel, and an efficient air filter screen is rotationally arranged in the impurity removal barrel; the spraying mechanism comprises a washing tank, a spraying pipe is rotatably arranged in the washing tank, a plurality of spraying heads are fixedly arranged on the lower surface of the spraying pipe, a rotary movable pipe is rotatably arranged on the upper surface of the washing tank, and the bottom end of the rotary movable pipe extends into the washing tank and is fixedly connected with the upper surface of the spraying pipe. By arranging the particle impurity removal mechanism, radioactive air can be primarily filtered through a cylindrical efficient air filter screen in an impurity removal barrel, large-particle dust and impurities in the radioactive air are effectively removed, and meanwhile radioactive aerosol in the radioactive air can be captured and adsorbed through the efficient air filter screen; and preliminary filtration of radioactive gas is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of radioactive gas treatment, in particular to a radioactive air filtering device. Background Art

[0002] Products or raw materials used within nuclear facilities typically exist in powder form, which is generally radioactive and contains fine particles. During the production, transportation, temporary storage, and transfer of the powder, every step must prevent the leakage of radioactive powder into the facility and the formation of radioactive aerosols. The radiation dose to personnel exposed to the powder must be minimized at every stage to ensure cleanliness within the facility and radiation protection requirements for personnel are met.

[0003] Patent document CN117942679A discloses a radioactive air filtration device comprising a filter box, wherein a pre-filter, a VM1 high-efficiency filter, an iodine adsorber, and a VM2 high-efficiency filter are overlapped in a frame cavity of the filter box. A first sealing gasket is provided at the overlap between the outer wall of the pre-filter and the frame cavity of the filter box. The VM1 high-efficiency filter, the iodine adsorber, and the VM2 high-efficiency filter and the frame cavity of the filter box are also overlapped with the same first sealing gasket. The radioactive air filtration device uses a damped clamping handle to clamp and secure each filter, and forms a seal with the first sealing gasket at the top of each filter, ensuring airtightness while facilitating the assembly and disassembly of each filter. The adsorption performance of the iodine adsorber can be determined by regularly checking the adsorption performance of a smaller carbon canister, eliminating the need to remove the iodine adsorber for each inspection, thus avoiding unnecessary disassembly of the iodine adsorber.

[0004] In actual use, the radioactive air filtration device proposed in the aforementioned patent document has fixed internal mechanical dust removal mechanisms and active adsorption mechanisms, which can become clogged during use and require frequent maintenance and cleaning of the filter mechanism. This increases worker exposure to radioactive gases and compromises safety. Therefore, we have developed a radioactive air filtration device that enhances worker safety while maintaining effective filtration. Summary of the Invention

[0005] The object of the present invention is to provide a radioactive air filtering device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a radioactive air filtering device, comprising a particle removal mechanism, a spray mechanism, and an adsorption mechanism, wherein the particle removal mechanism comprises a particle removal cylinder, wherein a high-efficiency air filter is rotatably provided inside the particle removal cylinder; The spray mechanism includes a washing tank, a spray pipe is rotatably provided inside the washing tank, a plurality of spray heads are fixedly provided on the lower surface of the spray pipe, a rotating movable pipe is rotatably provided on the upper surface of the washing tank, the bottom end of the rotating movable pipe extends into the interior of the washing tank and is fixedly connected to the upper surface of the spray pipe, a mounting plate is fixedly connected to the left side of the washing tank, a first drive motor is fixedly provided on the lower surface of the mounting plate, and a vertical plate is fixedly connected to the left side of the mounting plate, a linkage shaft is rotatably provided on the surface of the vertical plate, and a linkage cam is fixed to the left end of the linkage shaft; The adsorption mechanism includes an adsorption cylinder, the interior of the adsorption cylinder is filled with powdered activated carbon, and an extrusion disk is slidably arranged inside the adsorption cylinder, and the upper surface of the extrusion disk is fixedly connected to two linked push rods.

[0007] Preferably, the top end of the linkage push rod extends to the outside of the adsorption cylinder and is fixedly connected to a movable push plate. The position of the movable push plate corresponds to the linkage cam. The linkage cam overlaps the upper surface of the movable push plate. The right end of the linkage shaft is fixedly connected to a linkage bevel gear. The top end of the rotating shaft of the first drive motor is fixedly connected to a drive bevel gear. The drive bevel gear is meshed with the linkage bevel gear.

[0008] Preferably, a driving synchronous wheel is fixedly provided on the output shaft of the first driving motor, a driven synchronous wheel is fixedly provided on the top of the rotating movable tube, a transmission belt is sleeved between the driving synchronous wheel and the driven synchronous wheel, and the first driving motor and the rotating movable tube are connected to each other through the transmission belt.

[0009] Preferably, the surface of the linkage push rod is fixedly connected to a reset plate, the lower surface of the reset plate is fixedly connected to a reset spring, the bottom end of the reset spring is fixedly connected to the upper surface of the adsorption cylinder, the surface of the linkage push rod is sleeved with a corrugated sleeve, the top end of the corrugated sleeve is fixedly connected to the lower surface of the reset plate, and the bottom end of the corrugated sleeve is fixedly connected to the upper surface of the adsorption cylinder.

[0010] Preferably, an air delivery pump is fixedly provided on the upper surface of the adsorption cylinder, the output end of the air delivery pump extends to the interior of the adsorption cylinder and is fixedly connected to an air delivery pipe, the bottom end of the air delivery pipe extends to the bottom of the extrusion plate, the surface of the extrusion plate is provided with a limiting through-hole matching the air delivery pipe, the air delivery pipe is slidably connected to the inner wall of the limiting through-hole, the input end of the air delivery pump is fixedly connected to an air outlet pipe, the end of the air outlet pipe away from the air delivery pump extends to the interior of the washing tank, the surface of the air outlet pipe is fixedly provided with an exhaust valve, the bottom end of the adsorption cylinder is fixedly provided with a drain pipe, and the surface of the drain pipe is provided with a drain valve.

[0011] Preferably, a washing liquid delivery pipe is rotatably provided at the top end of the rotating movable tube, and the washing liquid delivery pipe is used to deliver washing liquid to the inside of the spray pipe. A gas recovery pipe is fixedly embedded in the upper surface of the washing tank, and the gas recovery pipe extends to the inside of the impurity removal cylinder at the other end away from the washing tank, and a switch valve is fixedly provided on the surface of the gas recovery pipe. A waste liquid discharge pipe is fixedly provided at the bottom end of the washing tank, and a drain valve is fixedly connected to the surface of the waste liquid discharge pipe.

[0012] Preferably, two fixing rods are fixedly connected to the inner wall of the impurity removal cylinder, and strip brushes are fixedly connected to the right ends of the two fixing rods, and the strip brushes overlap the surface of the high-efficiency air filter.

[0013] Preferably, a second drive motor is fixedly mounted on the upper surface of the debris removal barrel, a rotating shaft of the second drive motor is fixedly connected to a first gear, the upper and lower ends of the high-efficiency air filter are fixedly connected to a limit turntable, a drive sleeve is fixedly embedded on the upper surface of the limit turntable, the top end of the drive sleeve extends to the outside of the debris removal barrel, and the bottom end of the drive sleeve extends to the inside of the high-efficiency air filter, a second gear is fixedly provided on the top of the drive sleeve, and the first gear is engaged with the second gear.

[0014] Preferably, an air duct is fixedly embedded in the right bottom of the washing tank, the air duct extends to the interior of the debris removal cylinder at one end away from the washing tank, and the air duct is rotatably connected to the inner wall of the driving sleeve, and an air supply valve is fixedly provided on the surface of the air duct.

[0015] Preferably, an air intake pipe is fixedly embedded on the right side of the impurity removal barrel, and an air intake valve is fixedly provided on the surface of the air intake pipe.

[0016] Compared with the prior art, the present invention has the following beneficial effects: This type of radioactive air filtration device, by setting up a particle removal mechanism, can first use the cylindrical high-efficiency air filter inside the removal barrel to perform preliminary filtration of the radioactive air, effectively removing large particles of dust and impurities in the radioactive air, and at the same time, can use the high-efficiency air filter to capture and adsorb radioactive aerosols in the radioactive air, thereby achieving preliminary filtration of radioactive gases. At the same time as dust removal, the second drive motor can be used to drive the high-efficiency air filter to rotate, so that the outer surface of the high-efficiency air filter can be cleaned with a strip brush to avoid clogging of the filter surface, thereby achieving continuous and uninterrupted mechanical filtration, eliminating the need for staff to frequently maintain the filter device, and reducing the risk of exposure to radioactive gases.

[0017] This type of radioactive air filtration device, by setting up a spray mechanism, can input the gas into a washing tank after preliminary mechanical dust removal of the radioactive air, and use the spray pipe in the washing tank to drive the spray head to spray acid and alkali solution or redox agent washing solution on the gas. The washing solution can promote the precipitation or dissolution of radioactive substances in the radioactive air, thereby decomposing the radioactive substances and reducing their radiation hazards.

[0018] This type of radioactive air filtration device, by setting up an adsorption mechanism, can use the powdered activated carbon in the adsorption mechanism to adsorb radioactive substances in radioactive gases, and can use the functional groups on the surface of the activated carbon, such as carbonyl and carboxyl groups, to react chemically with certain radioactive gases to form chemical bonds, thereby further enhancing the adsorption effect. At the same time, under the rotation of the linkage cam, the extrusion disk can be driven to move back and forth up and down inside the adsorption cylinder, and then the extrusion disk can be used to extrude the activated carbon, so that the activated carbon and radioactive gases repeatedly combine and react, thereby improving the adsorption effect of radioactive gases. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front view structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the internal structure of the protective shell of the present invention; Figure 3 It is a schematic diagram of the front cross-section structure of the impurity removal cylinder of the present invention; Figure 4 It is a schematic diagram of the front cross-section structure of the present invention; Figure 5 This is a schematic diagram of the internal structure of the adsorption cylinder of the present invention; Figure 6 for Figure 2 Schematic diagram of the enlarged structure at A in the middle; Figure 7 for Figure 3 Schematic diagram of the enlarged structure at B in the middle; Figure 8 for Figure 3 Schematic diagram of the enlarged structure at C in the middle; In the figure: 1. Particle removal mechanism; 2. Spraying mechanism; 3. Adsorption mechanism; 101. Debris removal cylinder; 102. High-efficiency air filter; 103. Fixing rod; 104. Strip brush; 105. Second drive motor; 106. First gear; 107. Positioning turntable; 108. Drive sleeve; 109. Second gear; 110. Intake pipe; 111. Intake valve; 201, washing tank; 202, spray pipe; 203, rotating movable pipe; 204, first drive motor; 205, vertical plate; 206, linkage shaft; 207, linkage cam; 208, linkage bevel gear; 209, driving bevel gear; 210, driving synchronous pulley; 211, driven synchronous pulley; 212, transmission belt; 213, washing liquid delivery pipe; 214, gas recovery pipe; 215, on-off valve; 216, waste liquid discharge pipe; 217, air guide pipe; 218, air supply valve; 219, spray head; 301. Adsorption cylinder; 302. Powdered activated carbon; 303. Extrusion plate; 304. Linked push rod; 305. Movable push plate; 306. Reset plate; 307. Reset spring; 308. Corrugated sleeve; 309. Air delivery pump; 310. Air delivery pipe; 311. Air outlet pipe; 312. Sewage pipe. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0021] See also Figures 1-8 The present invention provides a technical solution: a radioactive air filtering device, including a particle removal mechanism 1, a spray mechanism 2 and an adsorption mechanism 3. The particle removal mechanism 1 includes a particle removal cylinder 101, an air intake pipe 110 is fixedly embedded on the right side of the particle removal cylinder 101, an air intake valve 111 is fixedly provided on the surface of the air intake pipe 110, and a high-efficiency air filter 102 is rotatably provided inside the particle removal cylinder 101.

[0022] It should be noted that by setting up the high-efficiency air filter 102, the HEPA high-efficiency air filter is mainly used to capture particulate dust larger than 0.5μm and various suspended matter. The air purifier is mainly composed of two parts: the filter element and the shell. It has high filtration efficiency, low flow resistance, and can be used continuously for a long time to reduce the cost of consumables in the later stage.

[0023] See also Figure 3 and Figure 5 An air guide tube 217 is fixedly embedded in the bottom right side of the washing tank 201. The end of the air guide tube 217 away from the washing tank 201 extends to the interior of the impurity removal drum 101, and the air guide tube 217 is rotatably connected to the inner wall of the driving sleeve 108. An air supply valve 218 is fixedly provided on the surface of the air guide tube 217.

[0024] It should be noted that two fixing rods 103 are fixedly connected to the inner wall of the impurity removal barrel 101 , and the right ends of the two fixing rods 103 are fixedly connected to strip brushes 104 , which overlap the surface of the high-efficiency air filter 102 .

[0025] See also Figure 8 A second drive motor 105 is fixedly installed on the upper surface of the impurity removal barrel 101, and the rotating shaft of the second drive motor 105 is fixedly connected to the first gear 106. The upper and lower ends of the high-efficiency air filter 102 are fixedly connected to the limiting turntable 107. A drive sleeve 108 is fixedly embedded on the upper surface of the limiting turntable 107. The top of the drive sleeve 108 extends to the outside of the impurity removal barrel 101, and the bottom end of the drive sleeve 108 extends to the inside of the high-efficiency air filter 102. A second gear 109 is fixedly provided on the top of the drive sleeve 108, and the first gear 106 is meshed with the second gear 109.

[0026] It is worth noting that, by providing the particle removal mechanism 1, the radioactive air can be initially filtered using the cylindrical high-efficiency air filter 102 inside the impurity removal barrel 101, effectively removing large particles of dust and impurities in the radioactive air. At the same time, the high-efficiency air filter 102 can be used to capture and adsorb radioactive aerosols in the radioactive air, thereby achieving preliminary filtration of radioactive gases. At the same time as dust removal, the second drive motor 105 can be used to drive the first gear 106 to rotate, and the second gear 109 can drive the second gear 109 to rotate, thereby driving the drive sleeve 108 and the limit turntable 107 to rotate, and at the same time driving the high-efficiency air filter 102 to rotate inside the impurity removal barrel 101, so that the strip brush 104 and the high-efficiency air filter 102 generate relative motion, so that the strip brush 104 is used to clean the outer surface of the high-efficiency air filter 102, thereby avoiding clogging of the surface of the high-efficiency air filter 102, improving the continuity and stability of mechanical filtration, reducing the number of times the staff maintain the filter, and improving work efficiency.

[0027] See also Figure 4 and Figure 5 The spraying mechanism 2 includes a washing tank 201, a spraying pipe 202 is rotatably provided inside the washing tank 201, a plurality of spray heads 219 are fixedly provided on the lower surface of the spraying pipe 202, and a rotating movable pipe 203 is rotatably provided on the upper surface of the washing tank 201. The bottom end of the rotating movable pipe 203 extends to the interior of the washing tank 201 and is fixedly connected to the upper surface of the spraying pipe 202.

[0028] It should be noted that a washing liquid delivery pipe 213 is rotatably provided at the top of the rotating movable tube 203, and the washing liquid delivery pipe 213 is used to deliver washing liquid to the inside of the spray pipe 202. A gas recovery pipe 214 is fixedly embedded in the upper surface of the washing tank 201. The other end of the gas recovery pipe 214 is away from the washing tank 201 and extends to the inside of the impurity removal barrel 101, and a switch valve 215 is fixedly provided on the surface of the gas recovery pipe 214. A waste liquid discharge pipe 216 is fixedly provided at the bottom end of the washing tank 201, and a drain valve is fixedly connected to the surface of the waste liquid discharge pipe 216.

[0029] It is worth noting that by setting up a spray mechanism 2, after the radioactive air is preliminarily mechanically dust-removed by the particle removal mechanism 1, the gas can be input into the washing tank 201, and the spray pipe 202 in the washing tank 201 drives the spray head 219 to spray the gas with acid-base solution or redox agent washing solution. The washing solution can promote the precipitation or dissolution of radioactive substances in the radioactive air, thereby decomposing the radioactive substances and reducing their radiation hazards.

[0030] Specifically, acid-base solutions: by adjusting the pH value of the gas, radioactive substances can be precipitated or dissolved, thereby achieving the effect of removing radioactive substances; redox agents: some strong oxidants can decompose radioactive substances and reduce the radiation hazards of radioactive gases.

[0031] See also Figure 6 A mounting plate is fixedly connected to the left side of the washing tank 201, a first driving motor 204 is fixedly provided on the lower surface of the mounting plate, and a vertical plate 205 is fixedly connected to the left side of the mounting plate, a linkage shaft 206 is rotatably provided on the surface of the vertical plate 205, and a linkage cam 207 is fixed to the left end of the linkage shaft 206. It should be noted that the linkage cam 207 is an elliptical structure with protrusions at both ends.

[0032] It should be noted that a driving synchronous wheel 210 is fixedly provided on the output shaft of the first driving motor 204, a driven synchronous wheel 211 is fixedly provided on the top of the rotating movable tube 203, a transmission belt 212 is sleeved between the driving synchronous wheel 210 and the driven synchronous wheel 211, and a transmission connection is achieved between the first driving motor 204 and the rotating movable tube 203 through the transmission belt 212.

[0033] See also Figure 5 The adsorption mechanism 3 includes an adsorption cylinder 301 , the interior of the adsorption cylinder 301 is filled with powdered activated carbon 302 , and an extrusion disk 303 is slidably provided inside the adsorption cylinder 301 , and two linked push rods 304 are fixedly connected to the upper surface of the extrusion disk 303 .

[0034] It should be noted that an air delivery pump 309 is fixedly provided on the upper surface of the adsorption cylinder 301, and the output end of the air delivery pump 309 extends to the interior of the adsorption cylinder 301 and is fixedly connected to an air delivery pipe 310. The bottom end of the air delivery pipe 310 extends to the bottom of the extrusion disk 303, and the surface of the extrusion disk 303 is provided with a limiting through-hole matching the air delivery pipe 310. The air delivery pipe 310 is slidingly connected to the inner wall of the limiting through-hole, and the input end of the air delivery pump 309 is fixedly connected to an air outlet pipe 311. The end of the air outlet pipe 311 away from the air delivery pump 309 extends to the interior of the washing tank 201, and an exhaust valve is fixedly provided on the surface of the air outlet pipe 311. A sewage pipe 312 is fixedly provided at the bottom end of the adsorption cylinder 301, and a sewage valve is provided on the surface of the sewage pipe 312.

[0035] It is worth noting that by providing the adsorption mechanism 3, the powdered activated carbon 302 in the adsorption mechanism 3 can be used to adsorb radioactive substances in the radioactive gas, and the functional groups on the surface of the activated carbon, such as carbonyl and carboxyl groups, can be used to chemically react with certain radioactive gases to form chemical bonds, thereby further enhancing the adsorption effect. Under the action of the first drive motor 204, the driving bevel gear 209 is driven to rotate, thereby driving the linkage bevel gear 208 to rotate, the linkage bevel gear 208 drives the linkage shaft 206 to rotate, and the linkage shaft 206 drives the linkage cam 207 to rotate. During the rotation of the linkage cam 207, the movable push plate 305 can be pushed downward, and the movable push plate 305 drives the two linkage push rods 304 to move downward, and then the extrusion disk 303 moves back and forth up and down inside the adsorption cylinder 301, and then the extrusion disk 303 is used to extrude the powdered activated carbon 302, so that the activated carbon and the radioactive gas are repeatedly combined and reacted, thereby achieving the purpose of completely eliminating radioactive substances and improving the adsorption effect of radioactive gases.

[0036] See also Figure 6 and Figure 7 The top end of the linkage push rod 304 extends to the outside of the adsorption cylinder 301 and is fixedly connected to a movable push plate 305. The position of the movable push plate 305 corresponds to the linkage cam 207. The linkage cam 207 overlaps with the upper surface of the movable push plate 305. The right end of the linkage shaft 206 is fixedly connected to a linkage bevel gear 208. The top end of the rotating shaft of the first drive motor 204 is fixedly connected to a drive bevel gear 209, and the drive bevel gear 209 is meshed with the linkage bevel gear 208.

[0037] It should be noted that the surface of the linkage push rod 304 is fixedly connected to the reset plate 306, the lower surface of the reset plate 306 is fixedly connected to the reset spring 307, the bottom end of the reset spring 307 is fixedly connected to the upper surface of the adsorption cylinder 301, and the surface of the linkage push rod 304 is sleeved with a corrugated sleeve 308, the top end of the corrugated sleeve 308 is fixedly connected to the lower surface of the reset plate 306, and the bottom end of the corrugated sleeve 308 is fixedly connected to the upper surface of the adsorption cylinder 301.

[0038] It should be noted that a protective shell is provided on the top of the washing tank 201. The position of the protective shell corresponds to the linkage cam 207. The protective shell can prevent dust and protect the linkage structure such as the linkage cam 207 and the first drive motor 204. It should be noted that a barometer is fixedly embedded on the upper surface of the washing tank 201 , and the barometer can be used to detect the air pressure inside the washing tank 201 , making it convenient for staff to transport radioactive air into the washing tank 201 .

[0039] Working principle: When in use, first use the air inlet pipe 110 to input the radioactive gas into the impurity removal cylinder 101, then use the high-efficiency air filter 102 inside the impurity removal cylinder 101 to perform preliminary mechanical dust removal and filtration on the radioactive air to remove large particles of impurities in the radioactive air, and then use the air supply valve 218 on the surface of the air guide pipe 217 to input the preliminarily filtered air into the washing tank 201, and at the same time use the washing liquid delivery pipe 213 to deliver the washing solution to the spray pipe 202 inside the washing tank 201, and use the surface of the spray pipe 202 to deliver the washing solution. The spray heads 219 spray the washing solution, and at the same time, the first drive motor 204 drives the driving synchronous wheel 210 to rotate, and the driven synchronous wheel 211 is driven to rotate through the transmission belt 212. The driven synchronous wheel 211 drives the rotating movable tube 203 to rotate on the surface of the washing tank 201, and then drives the spray pipe 202 to rotate and spray inside the washing tank 201, thereby increasing the spray range and making the washing solution evenly spread in every corner of the washing tank 201, so that the washing solution and the radioactive gas are fully combined and reacted, thereby improving the dust absorption of the radioactive gas. To achieve the washing effect, the exhaust valve on the surface of the outlet pipe 311 is opened, and the gas in the washing tank 201 is input into the adsorption cylinder 301 of the last step by using the delivery air pump 309, and the gas is input into the powdered activated carbon 302 by using the air delivery pipe 310. The powdered activated carbon 302 is used to adsorb the radioactive substances in the radioactive gas, and the functional groups on the surface of the activated carbon, such as carbonyl and carboxyl, can react chemically with certain radioactive gases to form chemical bonds, thereby further enhancing the adsorption effect. At the same time, the first drive motor 204 can be used to operate the The bevel gear 209 is driven to rotate, and the bevel gear 209 drives the linkage bevel gear 208 to rotate, which in turn drives the linkage shaft 206 and the linkage cam 207 to rotate. During the rotation of the linkage cam 207, the extrusion disk 303 is driven to move back and forth up and down inside the adsorption cylinder 301, and the extrusion disk 303 is used to extrude the activated carbon, so that the activated carbon and the radioactive gas repeatedly combine and react, thereby improving the adsorption effect of the radioactive gas. Finally, the drain valve of the drain pipe 312 can be opened to discharge and collect the activated carbon waste in the adsorption cylinder 301.

[0040] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology. It will not be described in detail here. The content not described in detail in this specification belongs to the existing technology known to professional and technical personnel in this field.

[0041] The present invention and its embodiments are described above. This description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by this and, without departing from the purpose of the present invention, designs structures and embodiments similar to this technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A radioactive air filtering device comprising a particle removal mechanism (1), a spray mechanism (2) and an adsorption mechanism (3), characterized in that: The particle removal mechanism (1) comprises a removal cylinder (101), wherein a high-efficiency air filter (102) is rotatably provided inside the removal cylinder (101); The spray mechanism (2) comprises a washing tank (201), a spray pipe (202) being rotatably provided inside the washing tank (201), a plurality of spray heads (219) being fixedly provided on the lower surface of the spray pipe (202), a rotating movable pipe (203) being rotatably provided on the upper surface of the washing tank (201), the bottom end of the rotating movable pipe (203) extending into the interior of the washing tank (201) and being fixedly connected to the upper surface of the spray pipe (202), a mounting plate being fixedly connected to the left side of the washing tank (201), a first driving motor (204) being fixedly provided on the lower surface of the mounting plate, and a vertical plate (205) being fixedly connected to the left side of the mounting plate, a linkage shaft (206) being rotatably provided on the surface of the vertical plate (205), and a linkage cam (207) being fixedly provided on the left end of the linkage shaft (206); The adsorption mechanism (3) comprises an adsorption cylinder (301), wherein the interior of the adsorption cylinder (301) is filled with powdered activated carbon (302), and an extrusion disk (303) is slidably provided inside the adsorption cylinder (301), and two linked push rods (304) are fixedly connected to the upper surface of the extrusion disk (303).

2. The radioactive air filtering device according to claim 1, characterized in that: The top end of the linkage push rod (304) extends to the outside of the adsorption cylinder (301) and is fixedly connected to a movable push plate (305). The position of the movable push plate (305) corresponds to the linkage cam (207). The linkage cam (207) overlaps the upper surface of the movable push plate (305). The right end of the linkage shaft (206) is fixedly connected to a linkage bevel gear (208). The top end of the rotating shaft of the first drive motor (204) is fixedly connected to a drive bevel gear (209). The drive bevel gear (209) is meshed with the linkage bevel gear (208).

3. The radioactive air filtering device according to claim 2, characterized in that: A driving synchronous wheel (210) is fixedly provided on the output shaft of the first driving motor (204), a driven synchronous wheel (211) is fixedly provided on the top of the rotating movable tube (203), a transmission belt (212) is sleeved between the driving synchronous wheel (210) and the driven synchronous wheel (211), and a transmission connection is achieved between the first driving motor (204) and the rotating movable tube (203) via the transmission belt (212).

4. The radioactive air filtering device according to claim 3, characterized in that: The surface of the linkage push rod (304) is fixedly connected to a reset plate (306), the lower surface of the reset plate (306) is fixedly connected to a reset spring (307), the bottom end of the reset spring (307) is fixedly connected to the upper surface of the adsorption cylinder (301), the surface of the linkage push rod (304) is sleeved with a corrugated sleeve (308), the top end of the corrugated sleeve (308) is fixedly connected to the lower surface of the reset plate (306), and the bottom end of the corrugated sleeve (308) is fixedly connected to the upper surface of the adsorption cylinder (301).

5. The radioactive air filtering device according to claim 1, characterized in that: An air delivery pump (309) is fixedly provided on the upper surface of the adsorption cylinder (301), and the output end of the air delivery pump (309) extends to the interior of the adsorption cylinder (301) and is fixedly connected to an air delivery pipe (310). The bottom end of the air delivery pipe (310) extends to the bottom of the extrusion plate (303), and a limiting through hole matching the air delivery pipe (310) is opened on the surface of the extrusion plate (303). The air delivery pipe (310) is slidably connected to the inner wall of the limiting through hole. An air outlet pipe (311) is fixedly connected to the input end of the air delivery pump (309), and one end of the air outlet pipe (311) away from the air delivery pump (309) extends to the interior of the washing tank (201). An exhaust valve is fixedly provided on the surface of the air outlet pipe (311). A sewage discharge pipe (312) is fixedly provided at the bottom end of the adsorption cylinder (301), and a sewage discharge valve is provided on the surface of the sewage discharge pipe (312).

6. The radioactive air filtering device according to claim 1, characterized in that: A washing liquid delivery pipe (213) is rotatably provided at the top end of the rotating movable pipe (203), and the washing liquid delivery pipe (213) is used to deliver washing liquid to the inside of the spray pipe (202). A gas recovery pipe (214) is fixedly embedded in the upper surface of the washing tank (201), and the other end of the gas recovery pipe (214) away from the washing tank (201) extends to the inside of the impurity removal drum (101), and a switch valve (215) is fixedly provided on the surface of the gas recovery pipe (214). A waste liquid discharge pipe (216) is fixedly provided at the bottom end of the washing tank (201), and a drain valve is fixedly connected to the surface of the waste liquid discharge pipe (216).

7. The radioactive air filtering device according to claim 1, characterized in that: Two fixing rods (103) are fixedly connected to the inner wall of the impurity removal cylinder (101), and strip brushes (104) are fixedly connected to the right ends of the two fixing rods (103). The strip brushes (104) overlap the surface of the high-efficiency air filter (102).

8. The radioactive air filtering device according to claim 7, characterized in that: A second drive motor (105) is fixedly mounted on the upper surface of the impurity removal barrel (101), and a rotating shaft of the second drive motor (105) is fixedly connected to a first gear (106). The upper and lower ends of the high-efficiency air filter (102) are fixedly connected to a limit turntable (107), and a drive sleeve (108) is fixedly embedded on the upper surface of the limit turntable (107). The top end of the drive sleeve (108) extends to the outside of the impurity removal barrel (101), and the bottom end of the drive sleeve (108) extends to the inside of the high-efficiency air filter (102). A second gear (109) is fixedly provided on the top of the drive sleeve (108), and the first gear (106) is meshed with the second gear (109).

9. The radioactive air filtering device according to claim 8, characterized in that: An air guide tube (217) is fixedly embedded in the bottom right side of the washing tank (201), and one end of the air guide tube (217) away from the washing tank (201) extends to the interior of the impurity removal cylinder (101). The air guide tube (217) is rotatably connected to the inner wall of the driving sleeve (108), and an air supply valve (218) is fixedly provided on the surface of the air guide tube (217).

10. The radioactive air filtering device according to claim 1, characterized in that: An air intake pipe (110) is fixedly embedded on the right side of the impurity removal barrel (101), and an air intake valve (111) is fixedly provided on the surface of the air intake pipe (110).

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