Radioactive air filtering equipment

Abstract

The invention discloses radioactive air filtering equipment which comprises a spraying tower and an adsorption assembly, a preliminary filtering assembly, a spraying assembly and a centrifugal assembly are arranged in the spraying tower, one side of the spraying tower communicates with a filtering, cleaning and storing assembly, and the invention relates to the technical field of radioactive gas treatment. According to the radioactive air filtering equipment, the driving assembly drives the preliminary filtering assembly to rotate so as to achieve preliminary filtering of radioactive air, meanwhile, the preliminary filtering assembly is in linkage with the spraying assembly to rotate so as to achieve spraying and impurity removal of the radioactive air subjected to preliminary filtering, and centrifugal treatment is conducted on the sprayed radioactive air in combination with the centrifugal assembly; the flow of the radioactive air subjected to centrifugal treatment is adjusted in a reciprocating mode in cooperation with the filtering, cleaning and storing assembly, so that the centrifugal treatment quality is guaranteed, then the adsorption assembly conducts activated carbon adsorption treatment and then discharges the radioactive air, lasting and effective filtering of the radioactive air is achieved, the tower type design is adopted, and the occupied area is smaller.

Description

Technical Field

[0001] This invention relates to the field of radioactive gas treatment technology, specifically to a radioactive air filtration device. Background Technology

[0002] Existing radioactive air filtration equipment is designed to purify the air of radioactive contaminants. These contaminants may originate from nuclear accidents, medical facilities, industrial processes, or other sources of radioactivity. The core technology of these devices is based on two main principles: adsorption and filtration. Adsorption is achieved by adsorbing radioactive contaminants onto a specific adsorption medium. Commonly used adsorption media include activated carbon, molecular sieves, and ion exchange resins. Filtration removes suspended solid radioactive particles from the air using particulate filters. Furthermore, to ensure the high efficiency of radioactive air filtration equipment, the adsorption medium and filters often need to be replaced regularly.

[0003] As described in application number 202510972220.9, a radioactive air filtration device, by setting up a particle removal mechanism, can first use a cylindrical high-efficiency air filter inside the removal cylinder to perform preliminary filtration of radioactive air, effectively removing large particles of dust and impurities. Simultaneously, the high-efficiency air filter can capture and adsorb radioactive aerosols in the radioactive air, achieving preliminary filtration of radioactive gases. Furthermore, while removing dust, a second drive motor can rotate the high-efficiency air filter, thereby using a strip brush to clean the outer surface of the filter, preventing clogging and achieving continuous, uninterrupted mechanical filtration. This eliminates the need for frequent maintenance by personnel, reducing the risk of exposure to radioactive gases. This radioactive air filtration method mainly includes a preliminary filtration step, a spray removal step, and an activated carbon adsorption step. Although these three steps achieve radioactive air filtration, the high moisture content of the sprayed radioactive gas means that relying solely on activated carbon adsorption cannot guarantee the dryness of the discharged gas, and it also affects the lifespan of the activated carbon. This is not conducive to long-term effective filtration of radioactive air and also requires a large footprint.

[0004] In view of this, a radioactive air filtration device is proposed, which can achieve a smooth connection between preliminary filtration, spray impurity removal and activated carbon adsorption without additional control. At the same time, the quality of radioactive air filtration is further improved by centrifugation after spraying, which can achieve long-term and effective filtration of radioactive air. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a radioactive air filtration device that solves the problems of traditional radioactive air filtration methods being unfavorable for sustained and effective filtration of radioactive air and requiring a large footprint.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: a radioactive air filtration device, comprising a spray tower and an adsorption component, wherein the spray tower is internally provided with a preliminary filtration component, a spray component and a centrifugal component, and a filter cleaning and storage component is connected to one side of the spray tower; radioactive air is processed sequentially through the preliminary filtration component, the spray component and the centrifugal component, then enters the filter cleaning and storage component, and is then adsorbed by the adsorption component and discharged.

[0007] The top of the spray tower is equipped with a drive assembly, which is used in conjunction with the preliminary filtration assembly and the centrifugal assembly.

[0008] The present invention is further configured such that: the preliminary filtration assembly includes a pad, a plurality of insert rods are fixedly installed at even intervals on the top of the pad, a filter screen cylinder is sleeved and slidably installed on the outer periphery of the plurality of insert rods, and a top cover is sleeved and slidably installed on the top of the outer periphery of the plurality of insert rods.

[0009] The spray tower includes a cylindrical body and a base. The cylindrical body is fixedly installed on the top of the base, and the top of the base communicates with the cylindrical body through an opening. A support ring is fixedly installed on the inner wall of the cylindrical body. The pad and the top cover are both located inside the cylindrical body, and the bottom of the pad contacts the top of the support ring.

[0010] An air inlet groove is provided on one side of the cylinder, and the air inlet groove is located between the top cover and the pad.

[0011] The present invention is further configured such that: the drive assembly includes a mounting plate, a drive motor is fixedly mounted on the top of the mounting plate by a connecting bracket, a drive shaft is fixedly connected to the output end of the drive motor by a coupling, a spline head is fixedly mounted on the bottom of the drive shaft through the mounting plate, and a spline groove for cooperating with the spline head is provided on the top of the top cover;

[0012] The mounting plate is fixedly installed on the top of the cylinder by bolts.

[0013] The invention is further configured such that: the spray assembly includes a delivery pump and an air guide column; the air guide column is fixedly installed at the bottom of the pad, and a horn-shaped through hole is opened at the bottom of the air guide column; a central hole communicating with the horn-shaped through hole is opened in the middle of the bottom of the pad; an annular cover is fitted and fixedly installed on the outer periphery of the air guide column; a plurality of spray holes are evenly spaced at the bottom of the annular cover; a sealing ring is fitted and rotatably installed on the outer periphery of the air guide column; the top of the sealing ring is rotatably engaged with the top of the inner cavity of the annular cover; the top of the sealing ring is fixedly connected to the bottom of the support ring through an L-shaped plate; the top of the sealing ring is also connected to a connector through a connecting pipe; the output end of the delivery pump is connected to a guide pipe; one end of the guide pipe penetrates the cylinder and communicates with the connector; the delivery pump is fixedly installed at the bottom of the back of the base; the input end of the delivery pump is connected to a suction pipe; a filter cover is fixedly installed at the bottom of the inner cavity of the base; one end of the suction pipe penetrates the base and extends into the interior of the filter cover.

[0014] The invention is further configured such that: the centrifuge assembly includes a rotating shaft; a partition plate 1 is fixedly installed at the top of the inner cavity of the base; two partition plates 2 are fixedly installed between the top of the partition plate 1 and the top of the inner cavity of the base; a converging horn tube is connected to and fixedly installed at the bottom of the partition plate 1; a centrifuge tube is disposed inside the converging horn tube; the top end of the centrifuge tube passes through the base and is rotatably connected to the base; a plurality of wing plates are fixedly installed at even intervals on the bottom of the outer periphery of the centrifuge tube; a spline column 1 is fixedly installed at the bottom end of the rotating shaft; a plurality of guide groove blocks are fixedly installed at even intervals inside the centrifuge tube, and the inner surface of the guide groove blocks slides in fit with the outer surface of the spline column 1.

[0015] The present invention is further configured such that: a driven wheel is rotatably mounted on the top of the mounting plate; a spline column is fixedly connected to the top of the rotating shaft; a spline groove is provided on the top of the driven wheel to cooperate with the spline column; a driving wheel is sleeved and fixedly mounted on the outer periphery of the drive shaft; and the driving wheel and the driven wheel are connected by a belt.

[0016] The present invention is further configured such that: the filter cleaning and storage assembly includes a storage cylinder, a cleaning groove is provided on one side of the storage cylinder, and an impurity groove communicating with the cleaning groove is provided on the other side of the cylinder, the impurity groove being disposed between the top cover and the pad plate;

[0017] The top end of the centrifuge tube penetrates the bottom of the storage cylinder and is rotatably connected to it. The top end of the rotating shaft penetrates the storage cylinder and extends above it. A blocking ring is fitted and fixedly installed on the outer circumference of the rotating shaft, and the outer circumference of the blocking ring contacts and engages with the top of the inner surface of the storage cylinder. A piston cylinder is also fitted and fixedly installed on the outer circumference of the rotating shaft, and the outer surface of the piston cylinder contacts and engages with the bottom of the inner surface of the storage cylinder. A conveying square tube is connected to the bottom of the other side of the storage cylinder.

[0018] The plugging ring is positioned above the cleaning groove. Several cleaning rings are sleeved and fixedly installed on the outer periphery of the rotating shaft, located below and on the plugging ring. Several cleaning strips are evenly fixedly installed on the outer periphery of the cleaning rings.

[0019] The front of the storage cylinder is also hinged with a sealed cleaning door;

[0020] A sleeve is fixedly installed at the bottom of the mounting plate by a T-shaped bracket. The sleeve is fitted over the top of the storage cylinder, and the top of the rotating shaft passes through the sleeve.

[0021] The present invention is further configured such that: the adsorption assembly includes a box, two partitions three are fixedly installed on the top of the inner cavity of the box, an inverted U-shaped frame is slidably installed between the two partitions three, a reciprocating screw is provided through the top of the inverted U-shaped frame, the top of the reciprocating screw passes through the box and is rotatably connected to the box, a pressure plate is fixedly installed at the bottom of the inverted U-shaped frame, a plurality of springs are fixedly installed at the bottom of the box, a support plate is fixedly installed at the top of the plurality of springs, the outer periphery of the support plate slides in contact with the inner surface of the box, an activated carbon group is placed between the top of the support plate and the pressure plate, a driven wheel two is sleeved and fixedly installed on the outer periphery of the centrifuge tube, a driven wheel three is sleeved and fixedly installed on the top of the reciprocating screw, and the driven wheel two and the driven wheel three are connected by a belt two for transmission.

[0022] One end of the conveying square tube is fixed and connected to one side of the top of the box, and the other side of the top of the box is connected to a discharge pipe. An activated carbon plate is also slidably installed between the partition and the inner wall of the box, and the activated carbon plate is located directly below the discharge pipe. A drain pipe with a valve is opened at the bottom of the box.

[0023] The present invention is further configured such that: a sealing cover is fixedly installed on the top of one side of the cylinder, an air inlet pipe is connected to one side of the sealing cover, a partition four is fixedly installed inside the sealing cover, a sealing plate is slidably installed between the partition four and the cylinder, an air guide pipe is fixedly installed through the surface of the sealing plate, the outer periphery of one end of the air guide pipe extends into the interior of the air inlet groove, and a long groove is opened on the surface of the partition four to cooperate with the other end of the air guide pipe;

[0024] Two support rods are fixedly installed at the bottom of the sealing plate. The bottom ends of the two support rods penetrate the sealing cover and are fixedly connected to a sliding frame. The sliding frame is sleeved and slidably installed on the outer periphery of the cylinder and the discharge pipe. Two positioning rods are fixedly installed at the top of the inverted U-shaped frame. The top ends of the two positioning rods penetrate the box and are fixedly connected to the bottom of the sliding frame.

[0025] The invention is further configured such that: an inverted U-shaped plate is fixedly installed on the top of the sliding frame by bolts, and the top end of the spline column two is rotatably connected to the top of the inner cavity of the inverted U-shaped plate by a bearing.

[0026] This invention provides a radioactive air filtration device. It has the following beneficial effects:

[0027] (1) The present invention drives the primary filter component to rotate to achieve the primary filtration of radioactive air. At the same time, the primary filter component is linked to the spray component to rotate to achieve the spraying and impurity removal of the radioactive air after primary filtration. Combined with the centrifugal component, the radioactive air after spraying is centrifuged. The flow rate of the radioactive air after centrifugation is adjusted back and forth with the filter cleaning and storage component to ensure the quality of centrifugation. Then, the adsorption component performs activated carbon adsorption treatment and discharges the air, thus achieving long-term and effective filtration of radioactive air. In addition, the tower design is adopted, which occupies a smaller area.

[0028] (2) The present invention drives the rotating shaft to rotate through the driving component, thereby achieving the rotation drive of the centrifuge tube. While ensuring the centrifugal power, the cooperation between the first spline column and the guide groove block, as well as the second spline column and the second spline groove, provides hardware support for the shaft to rise and fall during rotation. The piston cylinder is used to block and adjust the conveying square tube, thereby adjusting the radioactive air flow rate after centrifugation. At the same time, with the cooperation of the cleaning ring and the cleaning belt, impurities on the surface of the filter cylinder are cleaned during the rotation of the shaft and then collected in the storage cylinder, providing a reliable guarantee for the long-term effective use of the filter cylinder.

[0029] (3) The present invention achieves the rotation drive of the reciprocating screw through the cooperation of the centrifuge tube, driven wheel two, driven wheel three and belt two, and realizes the reciprocating lifting drive of the inverted U-shaped frame, thereby pushing the pressure plate to squeeze the activated carbon group, separating the adsorbed liquid, making the activated carbon more compact, further reducing the gas throughput. While squeezing the activated carbon group, the piston cylinder gradually blocks the conveying square tube. After the squeezing process is completed, the radioactive gas after centrifugation passes through the conveying square tube and enters the box, where it is adsorbed by the activated carbon group after the adsorbed liquid has been cleaned. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the external structure of the present invention;

[0031] Figure 2 This is a schematic diagram of the external structure of the present invention from a rear view.

[0032] Figure 3 This is a schematic diagram of the internal structure of the present invention;

[0033] Figure 4 This is a schematic diagram of the preliminary filter assembly, drive shaft, and spline head of the present invention;

[0034] Figure 5 This is a schematic diagram showing the connection of the cylindrical body, base, preliminary filtration assembly, and spray assembly of the present invention.

[0035] Figure 6 This is a schematic diagram showing the connection of the annular cover, spray hole, sealing ring, L-shaped plate, connector and guide tube structure of the present invention;

[0036] Figure 7 This is a schematic diagram of the centrifuge assembly of the present invention;

[0037] Figure 8 This is a schematic diagram showing the connection between the centrifuge tube and the filter cleaning and storage assembly structure of the present invention;

[0038] Figure 9 This is a schematic diagram of the structure of the cylinder and the filter cleaning and storage component of the present invention;

[0039] Figure 10 This is a schematic diagram of the structure of the driving component of the present invention;

[0040] Figure 11 This is a schematic diagram showing the connection of the rotating shaft, splined column one, plugging ring, piston cylinder, cleaning ring, cleaning belt and splined column two of the present invention.

[0041] Figure 12 This is a schematic diagram of the internal structure of the adsorption component of the present invention;

[0042] Figure 13 This is a schematic diagram showing the connection of the sealing plate, support rod, sliding frame, positioning rod, inverted U-shaped plate, spline column II, and inverted U-shaped frame structure of the present invention;

[0043] Figure 14 This is a schematic diagram showing the connection of the sealing cover, air inlet pipe, partition plate 4, sealing plate, air guide pipe, long groove and support rod structure of the present invention.

[0044] In the picture:

[0045] 1. Spray tower; 101. Shell; 102. Base; 103. Air inlet trough; 104. Filter cover; 105. Impurity trough; 106. Sealing cover; 107. Air inlet pipe; 108. Partition four; 109. Sealing plate; 1010. Air guide pipe; 1011. Long trough; 1012. Support rod; 1013. Sliding frame; 1014. Positioning rod; 1015. Inverted U-shaped plate;

[0046] 2. Adsorption assembly; 201. Box body; 202. Partition three; 203. Inverted U-shaped frame; 204. Reciprocating screw; 205. Pressure plate; 206. Spring; 207. Support plate; 208. Activated carbon assembly; 209. Driven wheel two; 2010. Driven wheel three; 2011. Belt two; 2012. Discharge pipe; 2013. Activated carbon plate; 2014. Drain pipe with valve;

[0047] 3. Preliminary filtration assembly; 301. Pad; 302. Insert rod; 303. Filter screen cylinder; 304. Top cover; 305. Support ring; 306. Center hole; 307. Spline groove one;

[0048] 4. Spray assembly; 401. Transfer pump; 402. Air guide column; 403. Horn through hole; 404. Annular cover; 405. Spray hole; 406. Sealing ring; 407. L-shaped plate; 408. Connecting joint; 409. Guide pipe; 4010. Suction pipe;

[0049] 5. Centrifuge assembly; 501. Rotating shaft; 502. Partition 1; 503. Partition 2; 504. Converging horn tube; 505. Centrifuge tube; 506. Wing plate; 507. Spline column 1; 508. Guide groove block;

[0050] 6. Filter cleaning and storage assembly; 601. Storage cylinder; 602. Cleaning tank; 603. Plug ring; 604. Piston cylinder; 605. Conveying square tube; 606. Cleaning ring; 607. Cleaning belt; 608. Sealing cleaning door; 609. Sleeve;

[0051] 7. Drive assembly; 701. Mounting plate; 702. Drive motor; 703. Drive shaft; 704. Spline head; 705. Driven wheel one; 706. Spline column two; 707. Spline groove two; 708. Drive wheel; 709. Belt one. Detailed Implementation

[0052] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0053] Please see Figure 1-14 This invention provides a radioactive air filtration device, including a spray tower 1. The spray tower 1 includes a cylinder 101 and a base 102. The cylinder 101 is fixedly installed on the top of the base 102, and the top of the base 102 communicates with the cylinder 101 through an opening. A preliminary filtration component 3 and a spray component 4 are arranged inside the cylinder 101. A centrifugal component 5 is arranged inside the base 102. A filter cleaning and storage component 6 is connected to one side of the spray tower 1. An adsorption component 2 is connected to the output end of the filter cleaning and storage component 6. Radioactive air is processed sequentially through the preliminary filtration component 3, the spray component 4, and the centrifugal component 5, and then enters the filter cleaning and storage component 6. After being adsorbed by the adsorption component 2, it is discharged. A drive component 7 is arranged on the top of the cylinder 101. The drive component 7 is used in conjunction with the preliminary filtration component 3 and the centrifugal component 5.

[0054] Radioactive air is first filtered by the preliminary filter assembly 3 to remove some impurities, and then sprayed by the spray assembly 4 to allow the spray liquid to fully react with the radioactive air, achieving further adsorption and washing of dust in the radioactive air. Subsequently, the humid radioactive air is centrifuged by the centrifuge assembly 5, and the residual liquid is collected in the spray tower 1 to ensure the dryness of the exhaust air. The air is then introduced into the adsorption assembly 2 through the filter cleaning and storage assembly 6, where the activated carbon in the adsorption assembly 2 adsorbs the radioactive air, ensuring the dryness of the exhaust gas while achieving effective filtration of the radioactive air.

[0055] In an exemplary embodiment, the preliminary filtration assembly 3 includes a pad 301, a plurality of insert rods 302 are fixedly and evenly fixedly installed on the top of the pad 301, a filter cylinder 303 is slidably mounted on the outer periphery of the plurality of insert rods 302, a top cover 304 is slidably mounted on the top of the outer periphery of the plurality of insert rods 302, a support ring 305 is fixedly installed on the inner wall of the cylinder 101, the pad 301 and the top cover 304 are both disposed inside the cylinder 101, and the bottom of the pad 301 contacts the top of the support ring 305. An air inlet groove 103 is provided on one side of the cylinder 101, and the air inlet groove 103 is disposed between the top cover 304 and the pad 301.

[0056] In use, radioactive air enters the cylinder 101 through the air inlet 103, is filtered for impurities by the filter screen 303, and then continues to be discharged downwards from the cylinder 101.

[0057] Furthermore, in order to ensure long-term effective filtration of impurities, the drive assembly 7 includes a mounting plate 701, which is fixedly mounted on the top of the cylinder 101 by bolts. A drive motor 702 is fixedly mounted on the top of the mounting plate 701 by a connecting bracket. The output end of the drive motor 702 is fixedly connected to a drive shaft 703 by a coupling. The bottom of the drive shaft 703 passes through the mounting plate 701 and is fixedly mounted with a spline head 704. The top of the top cover 304 has a spline groove 307 that mates with the spline head 704.

[0058] When radioactive air is introduced into the cylinder 101, the drive motor 702 drives the drive shaft 703 to rotate, causing the spline head 704 to rotate, which in turn drives the top cover 304 to rotate. The top cover 304 drives the filter cylinder 303 and the pad 301 to rotate through several insert rods 302. The rotating filter cylinder 303 intercepts impurities entering the radioactive air and introduces the impurities into the filtration and cleaning storage assembly 6. Specifically, the filtration and cleaning storage assembly 6 includes a storage cylinder 601. A cleaning groove 602 is provided on one side of the storage cylinder 601, and an impurity groove 105 communicating with the cleaning groove 602 is provided on the other side of the cylinder 101. The impurity groove 105 is located between the top cover 304 and the pad 301.

[0059] In one exemplary embodiment, the spray assembly 4 includes a delivery pump 401 and an air guide column 402. The air guide column 402 is fixedly installed on the bottom of a pad 301, and a horn-shaped through hole 403 is provided at the bottom of the air guide column 402. A central hole 306 communicating with the horn-shaped through hole 403 is provided in the middle of the bottom of the pad 301. An annular cover 404 is fitted and fixedly installed on the outer periphery of the air guide column 402. A plurality of spray holes 405 are evenly spaced on the bottom of the annular cover 404. A sealing ring 406 is fitted and rotatably installed on the outer periphery of the air guide column 402. The top of the sealing ring 406 is rotatably engaged with the top of the inner cavity of the annular cover 404. The top of the sealing ring 406 is fixedly connected to the bottom of the support ring 305 through an L-shaped plate 407. The top of the base 102 is connected to a connector 408 via a connecting pipe. The output end of the pump 401 is connected to a guide pipe 409. One end of the guide pipe 409 passes through the cylinder 101 and is connected to the connector 408. The pump 401 is fixedly installed at the bottom of the back of the base 102. The input end of the pump 401 is connected to a suction pipe 4010. In order to ensure the long-term effective use of the pump 401 and to avoid clogging of the nozzle 405, a filter cover 104 is fixedly installed at the bottom of the inner cavity of the base 102. One end of the suction pipe 4010 passes through the base 102 and extends into the interior of the filter cover 104. A spray liquid filling head is connected to the top of the base 102. A spray liquid discharge head is also connected to one side of the base 102 to facilitate the filling and discharge of the spray head.

[0060] In use, radioactive air filtered for impurities enters the horn-shaped through-hole 403 through the central hole 306 and continues to be conveyed downwards. The conveying pump 401 draws spray liquid from the base 102 through the suction pipe 4010. The spray liquid enters the annular cover 404 through the guide pipe 409 and the connector 408 in sequence, and flows out through the spray hole 405. As the pad 301 rotates, the spray liquid flowing out of the spray hole 405 rotates and sprays, comes into contact with the downwardly conveyed radioactive air, adsorbs dust and washes it, and then continues to be conveyed downwards to the base 102.

[0061] In an exemplary embodiment, the centrifuge assembly 5 includes a rotating shaft 501. A first partition 502 is fixedly installed on the top of the inner cavity of the base 102. Two second partitions 503 are fixedly installed between the top of the first partition 502 and the top of the inner cavity of the base 102. An air passage gap is reserved between the two second partitions 503. After the bottom of the first partition 502 is inserted into the spray liquid stored inside the base 102, the radioactive air after spraying can only flow along the air passage gap. A converging horn tube 504 is connected to and fixedly installed on the bottom of the first partition 502. A centrifuge tube 505 is disposed inside the converging horn tube 504. The bottom horizontal plane of the centrifuge tube 505 is higher than the liquid level of the spray liquid stored inside the base 102. The top of the centrifuge tube 505 penetrates the base 102 and is rotatably connected to the base 102. The bottom of the outer periphery of the centrifuge tube 505 is spaced evenly. Several wing plates 506 are evenly fixedly installed. A spline column 507 is fixedly installed at the bottom of the rotating shaft 501. Several guide groove blocks 508 are evenly fixedly installed inside the centrifuge tube 505. The inner surface of the guide groove block 508 slides with the outer surface of the spline column 507. The centrifuge tube 505 can be rotated by rotating the rotating shaft 501, thus facilitating centrifugation. Specifically, a driven wheel 705 is rotatably installed on the top of the mounting plate 701. A spline column 706 is fixedly connected to the top of the rotating shaft 501. A spline groove 707 is opened on the top of the driven wheel 705 to cooperate with the spline column 706. A drive wheel 708 is sleeved and fixedly installed on the outer periphery of the drive shaft 703. The drive wheel 708 and the driven wheel 705 are connected by a belt 709.

[0062] In use, as the drive shaft 703 rotates, it drives the drive wheel 708 to rotate. The drive wheel 708 drives the driven wheel 705 via belt 709, causing the spline column 706 to rotate. The spline column 706 drives the rotating shaft 501, causing the spline column 507 to rotate. The spline column 507 drives the centrifuge tube 505 to rotate via guide groove block 508. The centrifuge tube 505 drives several wing plates 506 to rotate, centrifuging the sprayed radioactive air. The centrifuged air is then transported upward through the centrifuge tube 505.

[0063] In an exemplary embodiment, to ensure long-term, stable, and effective impurity filtration, the top end of the centrifuge tube 505 penetrates the bottom of the storage cylinder 601 and is rotatably connected to the storage cylinder 601. The top end of the rotating shaft 501 penetrates the storage cylinder 601 and extends above it. A plugging ring 603 is fitted and fixedly installed on the outer periphery of the rotating shaft 501. The outer periphery of the plugging ring 603 contacts and engages with the top of the inner surface of the storage cylinder 601, thereby sealing the top of the storage cylinder 601 and preventing impurities from rising. A further fitting is also fitted on the outer periphery of the rotating shaft 501. A piston cylinder 604 is fixedly installed, and the outer surface of the piston cylinder 604 contacts and fits the bottom of the inner surface of the storage cylinder 601. A blocking ring 603 is set above the cleaning groove 602. Several cleaning rings 606 are sleeved and fixedly installed on the outer periphery of the rotating shaft 501, located below the blocking ring 603. Several cleaning strips 607 are fixedly installed at even intervals on the outer periphery of the cleaning rings 606. A conveying square tube 605 is connected to the bottom of the other side of the storage cylinder 601. The centrifuged radioactive air is conveyed to the adsorption assembly 2 through the conveying square tube 605.

[0064] In this embodiment, during the rotation of the rotating shaft 501, the cleaning ring 606 is driven to rotate, causing the cleaning belt 607 to rotate and beat the filter cylinder 303 to remove impurities from the surface of the filter cylinder 303. After the impurities pass through the impurity groove 105 and the cleaning groove 602 into the storage cylinder 601, they fall into the piston cylinder 604 for storage. The front of the storage cylinder 601 is also hinged with a sealing cleaning door 608 to facilitate the cleaning of impurities stored on the piston cylinder 604.

[0065] Furthermore, to prevent radioactive air from escaping directly through the top of the storage cylinder 601, a sleeve 609 is fixedly installed at the bottom of the mounting plate 701 by a T-shaped bracket. The sleeve 609 is fitted onto the top of the outer periphery of the storage cylinder 601, and the top of the rotating shaft 501 passes through the sleeve 609.

[0066] In an exemplary embodiment, the adsorption assembly 2 includes a housing 201. One end of a conveying square tube 605 is fixedly connected to one side of the top of the housing 201, and a discharge pipe 2012 is connected to the other side of the top of the housing 201. Two partitions 202 are fixedly installed on the top of the inner cavity of the housing 201. An inverted U-shaped frame 203 is slidably installed between the two partitions 202. A reciprocating screw 204 is passed through the top of the inverted U-shaped frame 203. The top end of the reciprocating screw 204 passes through the housing 201 and is rotatably connected to the housing 201. The lever 204 is a single-head design, consisting of a smooth section and a lead screw section from top to bottom. The smooth section is rotatably connected to the housing 201. The lead screw section works in conjunction with the inverted U-shaped frame 203, driving the inverted U-shaped frame 203 to move up and down reciprocally during rotation. A pressure plate 205 is fixedly installed at the bottom of the inverted U-shaped frame 203. Several springs 206 are fixedly installed at the bottom of the housing 201. A support plate 207 is fixedly installed at the top of the springs 206. The outer periphery of the support plate 207 slides in contact with the inner surface of the housing 201. An activated carbon group 208 is placed between the top of the mesh plate 207 and the pressing mesh plate 205. The activated carbon group 208 is composed of a large number of activated carbon particles. The radioactive air after centrifugation is input into the box 201 through the conveying square pipe 605 and is adsorbed and filtered by the activated carbon group 208. In order to avoid the activated carbon group 208 absorbing too much water and affecting its long-term effective use, the rotation of the reciprocating screw 204 is used to drive the inverted U-shaped frame 203 to move up and down. During the up and down movement of the inverted U-shaped frame 203, the activated carbon is filtered by the pressing mesh plate 205. The carbon group 208 performs extrusion dehydration. In order to realize the rotation of the reciprocating screw 204, a driven wheel 209 is sleeved and fixedly installed on the outer periphery of the centrifuge tube 505, and a driven wheel 2010 is sleeved and fixedly installed on the top of the outer periphery of the reciprocating screw 204. The driven wheel 209 and the driven wheel 2010 are connected by a belt 2011. The rotation of the reciprocating screw 204 can be realized during the rotation of the centrifuge tube 505. A drain pipe 2014 with a valve is provided at the bottom of the box 201 to facilitate the cleaning of the liquid generated by extrusion.

[0067] Furthermore, in order to prevent the pollutants adsorbed on the surface of the activated carbon group 208 from being directly discharged after being squeezed, an activated carbon plate 2013 is slidably installed between a partition 202 and the inner wall of the box 201, and the activated carbon plate 2013 is located directly below the discharge pipe 2012.

[0068] In an exemplary embodiment, to ensure the uniformity of radioactive air entering the cylinder 101 and to facilitate the cleaning of impurities on the surface of the filter cylinder 303, a sealing cover 106 is fixedly installed on the top of one side of the cylinder 101. An air inlet pipe 107 is connected to one side of the sealing cover 106. A partition plate 108 is also fixedly installed inside the sealing cover 106. A sealing plate 109 is slidably installed between the partition plate 108 and the cylinder 101. An air guide pipe 1010 is installed through and fixedly installed on the surface of the sealing plate 109. The outer periphery of one end of the air guide pipe 1010 extends into the interior of the air inlet groove 103. The surface of the fourth 108 has a long groove 1011 that is used to cooperate with the other end of the air guide pipe 1010. Two support rods 1012 are fixedly installed at the bottom of the sealing plate 109. The bottom ends of the two support rods 1012 penetrate the sealing cover 106 and are fixedly connected to the sliding frame 1013. The sliding frame 1013 is sleeved and slidably installed on the outer periphery of the cylinder 101 and the discharge pipe 2012. Two positioning rods 1014 are fixedly installed at the top of the inverted U-shaped frame 203. The top ends of the two positioning rods 1014 penetrate the box 201 and are fixedly connected to the bottom of the sliding frame 1013.

[0069] During the reciprocating screw 204 drives the inverted U-shaped frame 203 to move up and down, the inverted U-shaped frame 203 drives the positioning rod 1014 to move up and down. The positioning rod 1014 pulls the sliding frame 1013 to move the support rod 1012. The support rod 1012 drives the partition 108 to move up and down, so that the partition 108 drives the air guide pipe 1010 to move up and down in alignment with the filter cylinder 303, thus avoiding the situation where there are too many impurities on the fixed area of ​​the filter cylinder 303 surface caused by solids at the air inlet.

[0070] To ensure effective centrifugal treatment of the radioactive air after spraying, an inverted U-shaped plate 1015 is bolted to the top of the sliding frame 1013. The top of the spline column 706 is rotatably connected to the top of the inner cavity of the inverted U-shaped plate 1015 via a bearing. During the reciprocating movement of the sliding frame 1013, the inverted U-shaped plate 1015 is pulled, causing the spline column 706 to reciprocate up and down. The spline column 706 drives the rotating shaft 501 to reciprocate up and down the piston cylinder 604. During this process, the piston cylinder 604 continuously blocks the conveying square tube 605 and then disengages from the conveying square tube 605. This allows for the regulation of the air flow through the conveying square tube 605 while extending the residence time of the radioactive gas in the base 102, thereby ensuring the centrifugal quality of the radioactive gas after spraying.

[0071] In summary, this invention achieves effective filtration of radioactive gases by sequentially subjecting them to impurity filtration, spray filtration, centrifugation, and activated carbon adsorption. Furthermore, the filtration process continuously removes the filtered impurities and dehydrates the activated carbon through compression, ensuring the long-term effective use of the equipment without the need for frequent maintenance.

[0072] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A radioactive air filtration device, characterized in that, The system includes a spray tower (1) and an adsorption assembly (2). The spray tower (1) is equipped with a preliminary filtration assembly (3), a spray assembly (4) and a centrifugal assembly (5). A filter cleaning and storage assembly (6) is connected to one side of the spray tower (1). Radioactive air is processed sequentially by the preliminary filtration assembly (3), the spray assembly (4) and the centrifugal assembly (5), and then enters the filter cleaning and storage assembly (6). After being adsorbed by the adsorption assembly (2), it is discharged. The top of the spray tower (1) is provided with a drive assembly (7), which is used in conjunction with the preliminary filtration assembly (3) and the centrifugal assembly (5).

2. The radioactive air filtration device according to claim 1, characterized in that, The preliminary filtration assembly (3) includes a pad (301), on the top of the pad (301) a plurality of insert rods (302) are fixedly installed at even intervals, a filter cylinder (303) is sleeved and slidably installed on the outer periphery of the plurality of insert rods (302), and a top cover (304) is sleeved and slidably installed on the top of the outer periphery of the plurality of insert rods (302). The spray tower (1) includes a cylinder (101) and a base (102). The cylinder (101) is fixedly installed on the top of the base (102), and the top of the base (102) is connected to the cylinder (101) through an opening. A support ring (305) is fixedly installed on the inner wall of the cylinder (101). The pad (301) and the top cover (304) are both located inside the cylinder (101), and the bottom of the pad (301) is in contact with the top of the support ring (305). An air inlet groove (103) is provided on one side of the cylinder (101), and the air inlet groove (103) is located between the top cover (304) and the pad (301).

3. The radioactive air filtration device according to claim 2, characterized in that, The drive assembly (7) includes a mounting plate (701). A drive motor (702) is fixedly mounted on the top of the mounting plate (701) via a connecting bracket. A drive shaft (703) is fixedly connected to the output end of the drive motor (702) via a coupling. A spline head (704) is fixedly mounted on the bottom of the drive shaft (703) through the mounting plate (701). A spline groove (307) is provided on the top of the top cover (304) to cooperate with the spline head (704). The mounting plate (701) is fixedly mounted on the top of the cylinder (101) by bolts.

4. A radioactive air filtration device according to claim 3, characterized in that, The spray assembly (4) includes a delivery pump (401) and an air guide column (402). The air guide column (402) is fixedly installed on the bottom of the pad (301), and a horn-shaped through hole (403) is opened at the bottom of the air guide column (402). A central hole (306) communicating with the horn-shaped through hole (403) is opened in the middle of the bottom of the pad (301). An annular cover (404) is fitted and fixedly installed on the bottom of the outer periphery of the air guide column (402). A plurality of spray holes (405) are evenly spaced on the bottom of the annular cover (404). A sealing ring (406) is fitted and rotatably installed on the outer periphery of the air guide column (402). The top of the sealing ring (406) is rotatably engaged with the top of the inner cavity of the annular cover (404). The top of the sealing ring (406) is fixedly connected to the bottom of the support ring (305) via an L-shaped plate (407). The top of the sealing ring (406) is also connected to a connector (408) via a connecting pipe. The output end of the delivery pump (401) is connected to a guide pipe (409). One end of the guide pipe (409) passes through the cylinder (101) and is connected to the connector (408). The delivery pump (401) is fixedly installed at the bottom of the back of the base (102). The input end of the delivery pump (401) is connected to a suction pipe (4010). A filter cover (104) is fixedly installed at the bottom of the inner cavity of the base (102). One end of the suction pipe (4010) passes through the base (102) and extends into the interior of the filter cover (104).

5. A radioactive air filtration device according to claim 4, characterized in that, The centrifugal assembly (5) includes a rotating shaft (501). A partition 1 (502) is fixedly installed on the top of the inner cavity of the base (102). Two partitions 2 (503) are fixedly installed between the top of the partition 1 (502) and the top of the inner cavity of the base (102). A converging horn tube (504) is connected to and fixedly installed on the bottom of the partition 1 (502). A centrifugal tube (505) is provided inside the converging horn tube (504). The top of the centrifugal tube (505) passes through the base (102) and is rotatably connected to the base (102). Several wing plates (506) are fixedly installed at even intervals on the bottom of the outer periphery of the centrifugal tube (505). A spline column 1 (507) is fixedly installed at the bottom of the rotating shaft (501). Several guide groove blocks (508) are fixedly installed at even intervals inside the centrifugal tube (505). The inner surface of the guide groove block (508) slides in cooperation with the outer surface of the spline column 1 (507).

6. A radioactive air filtration device according to claim 5, characterized in that, A driven wheel (705) is rotatably mounted on the top of the mounting plate (701), a spline column (706) is fixedly connected to the top of the rotating shaft (501), a spline groove (707) is provided on the top of the driven wheel (705) to cooperate with the spline column (706), a drive wheel (708) is sleeved and fixedly mounted on the outer periphery of the drive shaft (703), and the drive wheel (708) and the driven wheel (705) are connected by a belt (709).

7. A radioactive air filtration device according to claim 6, characterized in that, The filter cleaning and storage assembly (6) includes a storage cylinder (601), a cleaning groove (602) is provided on one side of the storage cylinder (601), and an impurity groove (105) communicating with the cleaning groove (602) is provided on the other side of the cylinder body (101). The impurity groove (105) is located between the top cover (304) and the pad (301). The top end of the centrifuge tube (505) penetrates the bottom of the storage cylinder (601) and is rotatably connected to the storage cylinder (601). The top end of the rotating shaft (501) penetrates the storage cylinder (601) and extends to the top of the storage cylinder (601). A blocking ring (603) is sleeved and fixedly installed on the outer periphery of the rotating shaft (501). The outer periphery of the blocking ring (603) contacts and cooperates with the top of the inner surface of the storage cylinder (601). A piston cylinder (604) is also sleeved and fixedly installed on the outer periphery of the rotating shaft (501). The outer surface of the piston cylinder (604) contacts and cooperates with the bottom of the inner surface of the storage cylinder (601). The bottom of the other side of the storage cylinder (601) is connected to a conveying square tube (605). The plugging ring (603) is positioned above the cleaning groove (602). A number of cleaning rings (606) are sleeved and fixedly installed on the outer periphery of the rotating shaft (501) and below the plugging ring (603). A number of cleaning strips (607) are evenly fixedly installed on the outer periphery of the cleaning rings (606). The front of the storage cylinder (601) is also hinged with a sealing cleaning door (608). The bottom of the mounting plate (701) is fixedly mounted with a sleeve (609) by a T-shaped frame. The sleeve (609) is fitted on the top of the outer periphery of the storage cylinder (601), and the top of the rotating shaft (501) is set through the sleeve (609).

8. A radioactive air filtration device according to claim 7, characterized in that, The adsorption assembly (2) includes a housing (201). Two partitions (202) are fixedly installed at the top of the inner cavity of the housing (201). An inverted U-shaped frame (203) is slidably installed between the two partitions (202). A reciprocating screw (204) is threaded through the top of the inverted U-shaped frame (203). The top of the reciprocating screw (204) passes through the housing (201) and is rotatably connected to the housing (201). A pressure plate (205) is fixedly installed at the bottom of the inverted U-shaped frame (203). Several springs (206) are fixedly installed at the bottom of the housing (201). A support plate (207) is fixedly installed on the top of each of the springs (206). The outer periphery of the support plate (207) slides in contact with the inner surface of the box (201). An activated carbon group (208) is placed between the top of the support plate (207) and the pressure plate (205). A driven wheel two (209) is sleeved and fixedly installed on the outer periphery of the centrifuge tube (505). A driven wheel three (2010) is sleeved and fixedly installed on the top of the outer periphery of the reciprocating screw (204). The driven wheel two (209) and the driven wheel three (2010) are connected by a belt two (2011). One end of the conveying square tube (605) is fixed and connected to one side of the top of the box (201). The other side of the top of the box (201) is connected to the discharge pipe (2012). An activated carbon plate (2013) is also slidably installed between a partition plate (202) and the inner wall of the box (201), and the activated carbon plate (2013) is located directly below the discharge pipe (2012). A drain pipe (2014) with a valve is opened at the bottom of the box (201).

9. A radioactive air filtration device according to claim 8, characterized in that, A sealing cover (106) is fixedly installed on the top of one side of the cylinder (101). An air inlet pipe (107) is connected to one side of the sealing cover (106). A partition plate (108) is also fixedly installed inside the sealing cover (106). A sealing plate (109) is slidably installed between the partition plate (108) and the cylinder (101). An air guide pipe (1010) is fixedly installed through the surface of the sealing plate (109). The outer periphery of one end of the air guide pipe (1010) extends into the interior of the air inlet groove (103). A long groove (1011) is opened on the surface of the partition plate (108) to cooperate with the other end of the air guide pipe (1010). Two support rods (1012) are fixedly installed at the bottom of the sealing plate (109). The bottom ends of the two support rods (1012) penetrate the sealing cover (106) and are fixedly connected to a sliding frame (1013). The sliding frame (1013) is sleeved and slidably installed on the outer periphery of the cylinder (101) and the discharge pipe (2012). Two positioning rods (1014) are fixedly installed at the top of the inverted U-shaped frame (203). The top ends of the two positioning rods (1014) penetrate the box (201) and are fixedly connected to the bottom of the sliding frame (1013).

10. A radioactive air filtration device according to claim 8, characterized in that, The top of the sliding frame (1013) is fixedly mounted with an inverted U-shaped plate (1015) by bolts, and the top of the spline column two (706) is rotatably connected to the top of the inner cavity of the inverted U-shaped plate (1015) by a bearing.

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