A filter-packing device for handling radioactive dust fragments during sorting and breaking

Abstract

The application relates to a filtering and packing device for treating radioactive dust and debris generated in the process of sorting and crushing. The device comprises a filtering chamber, a purifying chamber and a packing chamber. The filtering chamber is provided with an air inlet and a discharge outlet, and a filter bag is arranged in the filtering chamber. The filter bag is used for filtering dust in the gas flowing into the air inlet. The purifying chamber is connected with the bag opening of the filter bag and is used for discharging the filtered gas. The packing chamber comprises a connecting pipe, a glove box and a fixing member. The glove box is used for arranging a packing bag. One end of the connecting pipe is connected with the discharge outlet, and the other end is located in the glove box and is in sealed connection with the glove box. A packing bag connecting part is arranged on the part of the connecting pipe located in the glove box. The fixing member can be matched with the connecting part to fix the packing bag.

Description

Technical Field

[0001] This invention relates to the field of nuclear test waste treatment technology, and in particular to a filtering and packaging device for processing radioactive dust fragments during sorting and crushing. Background Technology

[0002] With the rapid development of the nuclear energy industry, the amount of low- and intermediate-level radioactive solid waste generated by nuclear power plants and nuclear laboratories is increasing, and the requirements for waste treatment are also becoming more stringent. The main volume reduction technologies for radioactive solid waste are compression and incineration. While compression is simple, its compression ratio is limited and it does not alter the characteristics of the waste, significantly impacting subsequent disposal. Incineration, on the other hand, offers significant volume reduction (reduction ratios of tens to hundreds of times), stable incineration products (converting organic matter into inorganic matter), improved safety in final disposal, and substantial reduction in storage, transportation, and disposal costs. Therefore, incineration technology, as the most effective volume reduction technology for radioactive waste, has become the primary means of treating nuclear power plant radioactive waste and is widely used. With the rapid development of nuclear energy and nuclear power in my country, a large amount of radioactive combustible waste needs to be treated using efficient volume reduction technologies to meet the requirements of waste minimization, reduced operating costs, and overall waste safety. Incineration technology offers significant advantages in this regard.

[0003] In waste incineration, sorting and crushing are crucial pretreatment steps for safe, efficient, and environmentally friendly treatment. Sorting meets stringent feeding requirements, recovers metals to prevent equipment blockage, and crushing prevents explosions in sealed containers during combustion, homogenizes materials, ensures stable combustion, and extends equipment life; it also increases material surface area to promote complete combustion. During the sorting and crushing of fabrics and plastics, some dust and fine materials do not settle easily, forming aerosols that remain suspended for extended periods. If these aerosols are not effectively captured and cleaned, they can damage and pollute equipment, systems, and even the atmosphere. Filters are typically used to separate dust and other impurities. However, conventional filters only perform simple filtration and cannot capture and recover radioactive dust and debris generated during sorting and crushing, and ash removal consumes significant human and physical resources. These problems urgently need to be addressed. Summary of the Invention

[0004] This invention discloses a filtering and packaging device for processing radioactive dust fragments during sorting and crushing, aiming to solve the technical problems existing in the prior art.

[0005] The present invention adopts the following technical solution: This invention provides a filtration and packaging device for processing radioactive dust fragments during sorting and crushing, comprising a filtration chamber, a purification chamber, and a packaging chamber. The filtration chamber has an air inlet and an outlet, and a filter bag is installed inside. The filter bag is used to filter dust in the gas flowing in through the air inlet. The purification chamber is connected to the opening of the filter bag for discharging the filtered gas. The packaging chamber includes a connecting pipe, a glove box, and a fixing component. The glove box is used to hold packaging bags. One end of the connecting pipe is connected to the outlet, and the other end is located inside the glove box and sealed to the glove box. A packaging bag connecting portion is provided on the portion of the connecting pipe inside the glove box. The fixing component can cooperate with the connecting portion to fix the packaging bag.

[0006] In the filtering and packaging device for processing radioactive dust fragments during sorting and crushing according to the present invention, the connecting part is an annular groove arranged circumferentially along the connecting pipe; the fixing member is an elastic annular structure that is arranged around and abuts against the annular groove to clamp and fix the packaging bag.

[0007] In the filtering and packaging device for processing radioactive dust fragments during sorting and crushing according to the present invention, the connecting pipe is a reducing pipe with a large inlet and a small outlet; the connecting part is located on the side with the smaller outlet.

[0008] In the filtration and packaging device for processing radioactive dust fragments during sorting and crushing according to the present invention, the filtration chamber is further provided with a glove hole; the operating range of the glove hole can reach the filter bag.

[0009] In the filtration and packaging device for processing radioactive dust fragments during sorting and crushing according to the present invention, the filtration chamber includes a filtration chamber shell, a first filter bag, and a second filter bag; the air inlet is provided on the side of the filtration chamber shell, the discharge outlet is provided at the bottom, and a first air outlet and a second air outlet are provided at the top; the first filter bag and the second filter bag are respectively disposed inside the filtration chamber shell, and the edge of the bag opening of the first filter bag is connected to the first air outlet; the edge of the bag opening of the second filter bag is connected to the second air outlet; the filtration chamber includes a first filtration chamber and a second filtration chamber; the first filtration chamber is connected to the first air outlet and the outside, and is used to control whether gas passes through the first filter bag; the second filtration chamber is connected to the second air outlet and the outside, and is used to control whether gas passes through the second filter bag.

[0010] In the filtering and packaging device for processing radioactive dust fragments during sorting and crushing according to the present invention, the first purification chamber includes a first shell, a first connecting pipe and a first valve; the first shell is connected to the first air outlet; one end of the first connecting pipe is connected to the first shell and the other end is connected to an external air extraction device; the first valve is disposed on the first connecting pipe.

[0011] In the filtering and packaging device for processing radioactive dust fragments during sorting and crushing according to the present invention, the second purification chamber includes a second housing, a second connecting pipe, and a second valve; the second housing is connected to the second air outlet; two ends of the second connecting pipe are connected to the second housing, and the other two ends are connected to an external air extraction device; the second valve is disposed on the second connecting pipe.

[0012] In the filtering and packaging device for processing radioactive dust fragments during sorting and crushing according to the present invention, the discharge port is provided with a discharge valve; the discharge valve is used to control whether to discharge material into the packaging chamber.

[0013] The filtration and packaging device for processing radioactive dust fragments during sorting and crushing according to the present invention further includes a backflushing device; the outlet of the backflushing device is connected to the purification chamber for backflushing the filter bags in the filtration chamber, and includes a pressure tank, a third connecting pipe and a third valve; the pressure tank is used to store pressurized gas; one end of the third connecting pipe is connected to the pressure tank, and the other end is located in the purification chamber; the third valve is disposed in the third connecting pipe.

[0014] In the filtering and packaging device for processing radioactive dust fragments during sorting and crushing according to the present invention, two of the third connecting pipe and two of the third valve are respectively provided.

[0015] The technical solution adopted in this invention can achieve the following beneficial effects: This invention provides a filtration and packaging device for processing radioactive dust fragments during sorting and crushing. It uses filter bags to intercept and separate the dust, and the separated dust can be recycled by filtration. The packaging chamber ensures the safety of operators while the dust is recycled and packaged. The recycling process is simple and has high efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below, forming part of the present invention. The illustrative embodiments of the present invention and their descriptions explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings: Figure 1 This is a schematic diagram of the main structure of a filtering and packaging device for processing radioactive dust fragments during sorting and crushing according to the present invention. Figure 2 This is a side view of a filtering and packaging device for processing radioactive dust fragments during sorting and crushing according to the present invention. Figure 3 This is a top view schematic diagram of a filtering and packaging device for processing radioactive dust fragments during sorting and crushing according to the present invention. Figure 4This is a schematic diagram of a preferred embodiment of the present invention; Figure 5 For the present invention Figure 1 A magnified schematic diagram of the partial structure at point A in the middle; Figure 6 This is a structural schematic diagram of the fastener of the present invention.

[0017] Explanation of reference numerals in the attached figures: 1. Filter chamber; 11. Air inlet; 12. Discharge outlet; 13. Filter chamber shell; 131. First air outlet; 132. Second air outlet; 14. First filter bag; 15. Second filter bag; 16. Glove hole; 2. Purification chamber; 21. First purification chamber; 211. First shell; 212. First connecting pipe; 213. First valve; 22. Second purification chamber; 221. Second shell; 222. Second connecting pipe; 223. Second valve; 3. Packing chamber; 31. Connecting pipe; 311. Packing bag connection part; 32. Glove box; 33. Fixing component; 4. Discharge valve; 5. Backflushing equipment; 51. Pressure storage tank; 52. Third connecting pipe; 53. Third valve; 54. Hose; 55. Nozzle; 6. First pressure measuring element; 7. Second pressure measuring element. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. In the description of this invention, it should be noted that the term "or" is generally used to include the meaning of "and / or," unless otherwise expressly indicated.

[0019] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or a magnetic connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Furthermore, in the description of this application, the terms "first," "second," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance. In the description of this invention, "a plurality of" means at least two, such as two, three, or more, unless otherwise explicitly specified.

[0020] Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0021] To address the problems existing in the prior art, this application provides a filtering and packaging device for processing radioactive dust fragments during sorting and crushing.

[0022] like Figure 1 As shown, a filtration and packaging device for processing radioactive dust fragments during sorting and crushing includes a filtration chamber 1, a purification chamber 2, and a packaging chamber 3. The filtration chamber 1 has an air inlet 11 and a discharge outlet 12, and a filter bag is installed inside. The filter bag is used to filter dust in the gas flowing in through the air inlet 11. The purification chamber 2 is connected to the bag opening of the filter bag and is used to discharge the filtered gas. The packaging chamber 3 includes a connecting pipe 31, a glove box 32, and a fixing member 33. The glove box 32 is used to hold packaging bags. One end of the connecting pipe 31 is connected to the discharge outlet 12, and the other end is located inside the glove box 32 and is sealed to the glove box 32. A packaging bag connecting part 311 is provided on the part of the connecting pipe 31 located inside the glove box 32. The fixing member 33 can cooperate with the connecting part 311 to fix the packaging bag.

[0023] The present invention provides a filtration and packaging device for processing radioactive dust fragments during sorting and crushing. The device uses filter bags to intercept and separate the dust, and the separated dust can be recycled by filtration through filter bags. The packaging chamber ensures the safety of operators while the dust is recycled and packaged. The recycling process is simple and has high recycling efficiency.

[0024] In some preferred embodiments, the connecting portion 311 is an annular groove arranged circumferentially along the connecting pipe 31; the fixing member 33 is an elastic annular structure that surrounds and abuts against the annular groove to clamp and fix the packing bag. During operation, the packing bag is placed on the connecting pipe 31, covering the connecting portion 311, and then the fixing member 33 is wrapped around the packing bag to press the packing bag into the annular groove, thus completing the installation.

[0025] Preferably, the fastener 33 is an elastically deformable structure capable of abutting against the inner wall of the annular groove, such as a rubber sleeve.

[0026] Preferably, the fixing member 33 is composed of multiple elastic segments 331 and multiple rigid segments 332 arranged alternately and connected end to end; the rigid segments 332 can be accommodated in the annular groove and together with the annular groove clamp the packaging bag; the elastic segments 331 can be accommodated in the annular groove to press the rigid segments 332 against the annular groove and improve the sealing between the packaging bag and the connecting pipe 31; the elastic segments 331 provide elastic force, and the rigid segments 332 fix the packaging bag, making the fixation of the packaging bag more secure. When disassembling the packaging bag, the rigid segments 332 are controlled. Preferably, the rigid segments 332 are provided with grips 333, and the fixing member 33 is disassembled by gripping the grips 333, making disassembly more convenient. Specifically, the grips 333 can be grip handles.

[0027] More preferably, the number of elastic segments 331 and rigid segments 332 are both 2. In this case, when disassembling the packaging bag, it is only necessary to control the two rigid segments 332 to exert force outward so that they are disengaged from the ring groove, and then exert force upward or downward so that the elastic segment 331 is disengaged from the ring groove, thereby realizing the disassembly of the packaging bag.

[0028] More preferably, the wall of the annular groove away from the outlet of the connecting pipe 31 is inclined, that is, the cross-section of the annular groove is a right trapezoid, so that the elastic section 331 can be disengaged more easily when the fastener 33 is disassembled.

[0029] Preferably, the connecting pipe 31 of the connecting part 311 is a straight pipe, and the outer diameters of the connecting pipes 31 on both sides of the annular groove are not the same; that is, a step-like structure is formed at the annular groove. Thus, when installing the packaging bag, the operator can feel the diameter change by hand and locate the position of the annular groove, ensuring that the fixing part 33 is accurately placed into the annular groove.

[0030] More preferably, the diameter of the pipe section near the outlet of the connecting pipe 31 is larger than the diameter of the pipe section on the other side; thereby, the contact area between the packaging bag and the connecting pipe 31 can be increased, thereby increasing the friction and ensuring the stability of the packaging bag position during the feeding process.

[0031] Preferably, the connecting pipe 31 is a reducing pipe with a larger inlet and a smaller outlet; the connecting part 311 is located on the side with the smaller outlet. This allows for the installation of packaging bags at a more peripheral edge.

[0032] In some preferred embodiments, the filter chamber 1 is also provided with a glove hole 16; the operating range of the glove hole 16 is accessible to the filter bag. Thus, when the filter bag needs to be cleaned, the operator can tap the filter bag through the glove hole 16 to shake off the dust adhering to the outer surface of the filter bag.

[0033] In some preferred embodiments, the filter chamber 1 includes a filter chamber housing 13, a first filter bag 14, and a second filter bag 15; the filter chamber housing 13 has an air inlet 11 on its side, an outlet 12 at its bottom, and a first air outlet 131 and a second air outlet 132 at its top; the first filter bag 14 and the second filter bag 15 are respectively disposed inside the filter chamber housing 11, and the edge of the bag opening of the first filter bag 14 is connected to the first air outlet 131; the edge of the bag opening of the second filter bag 15 is connected to the second air outlet 132; the filter chamber 2 includes a first filter chamber 21 and a second filter chamber 22; the first filter chamber 21 is connected to the first air outlet 131 and the outside, and is used to control whether gas passes through the first filter bag 14; the second filter chamber 22 is connected to the second air outlet 132 and the outside, and is used to control whether gas passes through the second filter bag 15. Based on the setting of a first filter bag 14 and a second filter bag 15, and the limitation of the purification chamber 2 to include a first purification chamber 21 and a second purification chamber 22, the operation of the first filter bag 14 or the second filter bag 15 can be controlled by controlling the connection between the first purification chamber 21 or the second purification chamber 22 and the outside world. Thus, when one of the first filter bag 14 or the second filter bag 15 is damaged or the pressure difference is too large, the other can be switched to work, with one on and one on standby, to ensure continuous operation of the system.

[0034] Preferably, there are two first filter bags 14 and two second filter bags 15, and correspondingly, there are also two first air outlets 131 and two second air outlets 132. This improves the filtration efficiency.

[0035] Preferably, the first purification chamber 21 includes a first housing 211, a first connecting pipe 212 and a first valve 213; the first housing 211 is connected to the first air outlet 131; one end of the first connecting pipe 212 is connected to the first housing 211 and the other end is connected to an external air extraction device; the first valve 213 is disposed on the first connecting pipe 212.

[0036] Preferably, the second purification chamber 22 includes a second housing 221, a second connecting pipe 222, and a second valve 223; the second housing 221 is connected to the second air outlet 132; the second connecting pipe 222 is connected to the second housing 221 at two ends and to an external air extraction device at the other two ends; the second valve 223 is disposed on the second connecting pipe 222.

[0037] In some preferred embodiments, the discharge port 12 is provided with a discharge valve 4; the discharge valve 4 is used to control whether material is discharged into the packaging chamber 3. The discharge is controlled based on the discharge valve 4. Preferably, the discharge valve 4 is a slide gate valve.

[0038] In some preferred embodiments, a backflushing device 5 is also included. The outlet of the backflushing device 5 is connected to the purification chamber 2 for backflushing the filter bags in the filtration chamber 1, and includes a pressure tank 51, a third connecting pipe 52, and a third valve 53. The pressure tank 51 is used to store pressurized gas. One end of the third connecting pipe 52 is connected to the pressure tank 51, and the other end is located inside the purification chamber 2. The third valve 53 is located on the third connecting pipe 52. Based on this, when the filter bags are clogged by dust, causing an excessive pressure difference, air is blown into the inside of the filter bags by the backflushing device 5. Under the action of gas power and the increase in internal pressure, the dust attached to the outer surface of the filter bags falls off, and the filter bags can be reused.

[0039] Preferably, the backflushing device 5 further includes a hose 54 and a nozzle 55; one end of the hose 54 is connected to the end of the third connecting pipe 52, and the other end is located inside the filter bag; the nozzle 55 is connected to the end of the hose 54, and the air outlet faces the circumferential side of the filter bag, and can swing to contact the filter bag with the connection end with the third connecting pipe 52 as the pivot point when the nozzle 55 sprays air. Based on this, when backflushing, the nozzle 55 is subjected to a force opposite to the direction of air outlet while emitting air, causing it to move towards the inner wall of the filter bag, and even contact the inner wall of the filter bag, achieving an effect similar to knocking the filter bag, which can promote the loosening of dust attached to the outer surface of the filter bag under the action of vibration, and under the dual action of the nozzle 55 and high-pressure gas, the backflushing efficiency can be improved, and the effect of rapid dust removal can be achieved.

[0040] Preferably, two third connecting pipes 52 and two third valves 53 are provided respectively; this scheme corresponds to the working conditions of setting the first filter bag 14 and the second filter bag 15. The third connecting pipes 52 and the third valves 53 are one-to-one. The first filter bag 14 is provided with one set of third connecting pipes 52 and third valves 53, and the second filter bag 15 is provided with one set of third connecting pipes 52 and third valves 53 respectively, so as to backflush the first filter bag 14 and the second filter bag 15 respectively.

[0041] Preferably, the purification chamber 2 is equipped with a first pressure measuring element 6 for measuring internal pressure, and the filter chamber 1 is equipped with a second pressure measuring element 7 for measuring internal pressure. The pressure difference between the first pressure measuring element 6 and the second pressure measuring element 7 is used to determine whether backflushing is required. Specifically, the pressure difference value can be set according to the operating conditions.

[0042] Specifically, both the first pressure measuring element 6 and the second pressure measuring element 7 can be selected as pressure gauges.

[0043] The operation method of the filter packaging device of the present invention is as follows: The following explanation will be based on the example of using this device to capture and process radioactive dust fragments generated during the sorting and crushing of radioactive solid waste before incineration.

[0044] Before using the device, connect the gas outlet in the filtered clean chamber to the fan inlet, connect the gas inlet in the dust collection and filtration chamber to the interface of the equipment that may generate dust and debris, and connect the bag outlet in the baling and recycling treatment chamber to the crushed material outlet to complete the connection of the device.

[0045] Before the sorting and crushing system starts operating, the cleanroom 2 is connected to an external exhaust system, such as an induced draft fan, at which point the system begins operation. Radioactive dust and debris generated during sorting and crushing are drawn into the filter chamber 1 through the inlet 11. After being filtered by the filter bags, the clean gas enters the cleanroom 2 and is discharged by the induced draft fan. Dust and debris trapped by the filter bags are knocked off through the glove hole 16 and fall onto the discharge valve 4 at the outlet 12 of the filter chamber 1, thus completing the filtration of the gas and the collection of dust and debris.

[0046] Place the packing bag into the glove box 32 through the packing bag inlet. Tie the packing bag to the packing bag connection part 311 on the connecting pipe 31 through the glove hole on the glove box 32. Then install the fixing piece 33 to fix the packing bag. When the dust and debris accumulate to a certain amount, open the discharge valve 4. At this time, the collected dust and debris will fall into the packing bag. Close the discharge valve 4. Remove the fixing piece 33 through the glove hole on the glove box 32. Then take the packing bag off the connecting pipe 31 and put it into the packing bag outlet on the glove box 32 to complete the packing and recycling of dust and debris.

[0047] During operation, observe the pressure difference between the first pressure measuring element 6 and the second pressure measuring element 7. If the pressure difference is too large, activate the third valve 53 of the backflushing device 5 to blow high-pressure air into the filter bag through the third connecting pipe 53. Operators should then use the glove hole 16 to vibrate and remove dust and debris from the filter bag. If the above operations are ineffective, or if there is no pressure difference (e.g., if the filter bag is damaged), switch the conduction state of the first valve 213 and the second valve 223 to activate the spare filter bag. After the entire system is shut down, replace the problematic filter bag through the inspection port.

[0048] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other modifications under the guidance of the present invention without departing from the spirit and scope of the claims, and all of these modifications are within the protection scope of the present invention.

Claims

1. A filtering and packaging device for processing radioactive dust fragments during sorting and crushing, characterized in that, Includes a filtration room, a purification room, and a packaging room; The filter chamber has an air inlet and a material outlet, and a filter bag is installed inside. The filter bag is used to filter dust from the gas flowing in through the air inlet; The purification chamber is connected to the bag opening of the filter bag, which is used to exhaust the filtered gas. The packing chamber includes a connecting pipe, a glove box, and fasteners; The glove box is used to store packing bags for packaging. One end of the connecting pipe is connected to the discharge port, and the other end is located inside the glove box and is sealed to the glove box. A packing bag connecting part is provided on the part of the connecting pipe located inside the glove box. The fastener can cooperate with the connecting part to secure the packaging bag.

2. The filtering and packaging device for processing radioactive dust fragments during sorting and crushing according to claim 1, characterized in that, The connecting part is an annular groove arranged along the circumference of the connecting pipe; The fastener is an elastic ring structure that is arranged around and abuts against the ring groove to clamp and fix the packaging bag.

3. The filtering and packaging device for processing radioactive dust fragments during sorting and crushing according to claim 1, characterized in that, The connecting pipe is a variable diameter pipe with a large inlet and a small outlet. The connecting part is located on the side with the smaller opening.

4. The filtering and packaging device for processing radioactive dust fragments during sorting and crushing according to claim 1, characterized in that, The filter chamber is also provided with glove holes; The glove hole has an operating range that allows access to the filter bag.

5. The filtering and packaging device for processing radioactive dust fragments during sorting and crushing according to claim 1, characterized in that, The filter chamber includes a filter chamber shell, a first filter bag, and a second filter bag; The air inlet is provided on the side of the purification chamber shell, the discharge port is provided at the bottom, and the first air outlet and the second air outlet are provided at the top. The first filter bag and the second filter bag are respectively disposed inside the purification chamber housing, and the edge of the bag opening of the first filter bag is connected to the first air outlet; The edge of the second filter bag opening is connected to the second air outlet; The cleanroom includes a first cleanroom and a second cleanroom; The first purification chamber is connected to the first air outlet and the outside, and is used to control whether the gas passes through the first filter bag; The second purification chamber is connected to the second air outlet and the outside, and is used to control whether the gas passes through the second filter bag.

6. The filtering and packaging device for processing radioactive dust fragments during sorting and crushing according to claim 5, characterized in that, The first cleanroom includes a first housing, a first connecting pipe, and a first valve; the first housing is connected to the first air outlet; one end of the first connecting pipe is connected to the first housing, and the other end is connected to an external air extraction device; The first valve is installed on the first connecting pipe.

7. The filtering and packaging device for processing radioactive dust fragments during sorting and crushing according to claim 5, characterized in that, The second cleanroom includes a second housing, a second connecting pipe, and a second valve; the second housing is connected to the second air outlet; the second connecting pipe is connected to the second housing at two ends and to an external air extraction device at the other two ends; The second valve is installed on the second connecting pipe.

8. The filtering and packaging device for processing radioactive dust fragments during sorting and crushing according to claim 1, characterized in that, The discharge port is equipped with a discharge valve; The discharge valve is used to control whether to discharge material into the packaging chamber.

9. The filtering and packaging device for processing radioactive dust fragments during sorting and crushing according to claim 1, characterized in that, It also includes backflush equipment; The air outlet of the backflushing device is connected to the purification chamber for backflushing the filter bags in the filtration chamber, and includes a pressure tank, a third connecting pipe and a third valve. The pressure tank is used to store pressurized gas; One end of the third connecting pipe is connected to the pressure storage tank, and the other end is located in the clean room; The third valve is located in the third connecting pipe.

10. The filtering and packaging device for processing radioactive dust fragments during sorting and crushing according to claim 1, characterized in that, Two of each are provided for the third connecting pipe and the third valve.

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