CN116692096A - Radioactive incineration ash collecting and packaging system and method - Google Patents

Abstract

The invention discloses a radioactive incineration ash collecting and packaging system and a method, wherein the radioactive incineration ash collecting and packaging system comprises a first sealed cavity, a second sealed cavity, a conveying mechanism, a cover taking and placing mechanism, a blanking pipe and a packaging device; the first sealing chamber and the second sealing chamber are adjacently connected; the conveying mechanism comprises a first roller way, a second roller way and a third roller way, the first roller way is arranged at the outer side of the first sealing door, and the second roller way and the third roller way are respectively arranged in the first sealing cavity and the second sealing cavity; the cover taking and placing mechanism is arranged in the first sealed cavity, the blanking pipe is arranged in the second sealed cavity, and the packing device is arranged on the second sealed cavity. According to the radioactive incineration ash packaging device, radioactive incineration ash is packaged into bags in the sealed cavity and placed in the metal ash bucket through the matched arrangement of the sealed cavity, the inner taking and placing cover mechanism, the blanking pipe, the packaging device and the like, the whole process is automatically carried out, and the personnel irradiation level is reduced.

Description

Radioactive incineration ash collecting and packaging system and method

Technical Field

The invention relates to the technical field of radioactive waste treatment, in particular to a radioactive incineration ash collecting and packaging system and method.

Background

In the radioactive waste incineration treatment process, the equipment including the bottom of the incinerator, the secondary combustion chamber, the quenching tower, the bag-type dust remover and the like can deposit incineration ash, so that the produced incineration ash needs to be discharged and collected. The ash is discharged through an ash discharger in the prior radioactive waste incineration treatment process, the metal ash barrel is conveyed into a glove box for collecting the incineration ash, a cover is taken from the metal ash barrel in the glove box, the metal ash barrel is conveyed to the lower part of an ash discharge hole after the cover is taken, the metal ash barrel is in butt joint with the ash discharge hole, an ash discharge valve and the ash discharger are opened, and the incineration ash is discharged into the metal ash barrel. By observation, when the incineration ash in the metal ash bucket is fast full, closing the ash discharger and the ash discharge valve; and after the unloading is finished, finally, the metal ash barrel is capped, and the metal ash barrel is transported, temporarily stored and processed later.

The existing incineration treatment process of the radioactive waste has the problems of low automation degree of incineration ash unloading and collection, defects of metal ash bucket butt joint, serious incineration ash raise dust, polluted incineration inside the metal ash bucket, troublesome recycling and the like. Because the incineration ash has certain radioactivity, the sealing performance and the safety requirements of the ash discharge system are higher.

Therefore, it is necessary to design an automatic ash discharging, collecting and packaging method so as to effectively reduce the working time and the illuminated time of personnel and ensure the health of the personnel.

Disclosure of Invention

The invention aims to solve the technical problem of providing a radioactive incineration ash collecting and packaging system and a radioactive incineration ash collecting and packaging method for realizing automatic packaging of incineration ash.

The technical scheme adopted for solving the technical problems is as follows: the radioactive incineration ash collecting and packaging system comprises a first sealed cavity, a second sealed cavity, a conveying mechanism, a taking and placing cover mechanism, a blanking pipe and a packaging device;

the first sealing chamber and the second sealing chamber are adjacently connected, a first sealing door is arranged on one side of the first sealing chamber, which faces away from the second sealing chamber, and a second sealing door is arranged between the first sealing chamber and the second sealing chamber;

the conveying mechanism comprises a first roller way, a second roller way and a third roller way, wherein the first roller way, the second roller way and the third roller way are used for conveying the metal ash bucket, the first roller way is arranged on the outer side of the first sealing door, and the second roller way and the third roller way are respectively arranged in the first sealing chamber and the second sealing chamber;

The cover taking and placing mechanism is arranged in the first sealed cavity and is used for sucking or covering a barrel cover on the metal ash barrel; the blanking pipe is arranged in the second sealed cavity and is used for conveying incineration ash into a film bag in the metal ash barrel;

the packing device is arranged on the second sealing chamber and is used for forming the packaging film into a film bag, placing the film bag into a metal ash bucket, and performing heat sealing and cutting after the film bag is filled with incineration ash.

Preferably, the radioactive incineration ash collecting and packaging system further comprises a closed box body, wherein the first sealing chamber and the second sealing chamber are respectively formed in the closed box body and are communicated or isolated through opening and closing of the second sealing door.

Preferably, the radioactive incineration ash collecting and packaging system further comprises a first closed box body and a second closed box body which are connected, wherein the first sealed chamber and the second sealed chamber are respectively formed in the first closed box body and the second closed box body; the second sealing door is arranged on the connecting side wall of the first sealing box body and the second sealing box body.

Preferably, at least one side wall of the first sealed chamber is provided with a first peeping window and/or an illuminating lamp; at least one side wall of the second sealing chamber is provided with a second peeping window and/or an illuminating lamp.

Preferably, a first protective glove is arranged on the first peeping window; and a second protective glove is arranged on the second peeping window.

Preferably, the side wall of the first sealed chamber and/or the second sealed chamber is/are also provided with an access opening and/or an access door.

Preferably, the second roller way is provided with a cover taking and placing station positioned below the cover taking and placing mechanism and a first limiting mechanism positioned at one side of the cover taking and placing station facing the third roller way;

the first limiting mechanism is in communication connection with the first roller way and the second roller way, and after the metal ash barrel reaches the cover taking and placing station through the first roller way and the second roller way, the first roller way and the second roller way stop rotating.

Preferably, the first limiting mechanism comprises a first blocking piece which can extend out of the second roller way in an up-and-down motion manner, a first trigger arranged on the first blocking piece, and a first air cylinder which is connected with and drives the first blocking piece to move up and down; the first cylinder is arranged below the second roller way.

Preferably, a second limiting mechanism positioned on one side of the cover taking and placing station, facing the first roller way, is arranged on the second roller way;

The second limiting mechanism is in communication connection with the second roller way and the third roller way, and after the metal ash barrel reaches the cover taking and placing station through the third roller way and the second roller way to trigger the second limiting mechanism, the third roller way and the second roller way stop rotating.

Preferably, the second limiting mechanism comprises a second blocking piece which can extend out of the second roller way in an up-and-down motion manner, a second trigger arranged on the second blocking piece, and a second air cylinder which is connected with and drives the second blocking piece to move up and down; the second cylinder is arranged below the second roller way.

Preferably, at least one side of the second roller way in the length direction is also provided with a limiting guide mechanism for limiting the metal ash barrel on a linear path of the cover taking and placing station;

the limiting guide mechanism comprises a baffle wall which is vertically arranged and a plurality of rollers which are used for being in contact with the outer surface of the metal ash barrel and can roll; the rollers are arranged at intervals along the length direction of the retaining wall.

Preferably, the third roller way is provided with an ash discharging and packing station positioned below the blanking pipe and a third limiting mechanism positioned at one side of the ash discharging and packing station away from the second roller way;

The third limiting mechanism is in communication connection with the third roller way and the second roller way, and after the metal ash bucket is conveyed to reach the ash unloading and packaging station through the second roller way and the third roller way to trigger the third limiting mechanism, the second roller way and the third roller way stop rotating.

Preferably, the third limiting mechanism comprises a baffle plate arranged on the third roller way or on the outer side of the third roller way, and a third trigger is arranged on the baffle plate.

Preferably, the cover taking and placing mechanism comprises a driving unit and an electromagnet;

the driving unit faces the second roller way through a telescopic driving rod, and the electromagnet is arranged at the end part of the driving rod; after the driving unit is started, the driving rod drives the electromagnet to move downwards to be close to the metal ash bucket, and the bucket cover of the metal ash bucket can be sucked after the electromagnet is electrified.

Preferably, the packaging device comprises a film placing mechanism arranged outside the second sealing cavity, a forming mechanism arranged outside the upper end of the blanking pipe, a film conveying pinch roller assembly and a longitudinal sealing mechanism which are arranged outside the blanking pipe and below the forming mechanism, and a transverse sealing mechanism arranged below the longitudinal sealing mechanism;

the packaging film is formed by the forming mechanism around the periphery of the blanking pipe, the film conveying pinch roller component transmits the annular film to the longitudinal sealing mechanism, the longitudinal sealing mechanism is used for heat-sealing the two longitudinal sides of the annular film, and the transverse sealing mechanism is used for heat-sealing the bottom of the annular film to form a film bag and cutting the film bag.

Preferably, the film conveying pinch roller assembly comprises a pinch roller, a pinch roller compacting unit and a belt wheel driving unit; the pinch roller compaction unit is used for pushing the pinch roller to compact the packaging film between the pinch roller and the surface of the blanking pipe; the belt wheel driving unit is used for driving the pinch roller to rotate and pulling the packaging film from top to bottom along the blanking pipe;

the longitudinal sealing mechanism comprises a longitudinal heat sealing machine and a longitudinal heat sealing machine pushing unit; the longitudinal heat sealing machine is arranged along the axial direction of the blanking pipe, and the longitudinal heat sealing machine pushing unit is used for pushing the longitudinal heat sealing machine to press the packaging film to the blanking pipe so that the packaging film is melted and sealed.

Preferably, the transverse sealing mechanism comprises two transverse heat sealing machines, a transverse heat sealing machine pushing unit, a cutter and a cutter pushing unit; the two transverse heat sealing machines are oppositely arranged at intervals, and the transverse heat sealing machine pushing unit is used for pushing the two transverse heat sealing machines to move in opposite directions and tightly press a film bag opening passing through the space between the two transverse heat sealing machines; the cutter is arranged between an upper pressing plate and a lower pressing plate of the transverse heat sealing machine, and the cutter pushing unit is used for pushing the cutter out of the transverse heat sealing machine to cut off the film bag.

Preferably, the radioactive incineration ash collecting and packaging system further comprises a jacking mechanism for jacking up the metal ash bucket and a weighing sensor for weighing the metal ash bucket;

the jacking mechanism is arranged below the third roller way, and the weighing sensor is arranged on the jacking mechanism.

Preferably, the jacking mechanism comprises a jacking driving unit and a jacking supporting piece, wherein the jacking driving unit and the jacking supporting piece are installed below the third roller way; the telescopic rod of the jacking driving unit faces upwards to the third roller way, the jacking supporting piece is arranged on the telescopic rod of the jacking driving unit, moves up and down along with the telescopic rod, and jacks up the metal ash barrel through the third roller way.

Preferably, the radioactive incineration ash collecting and packaging system further comprises an air inlet device communicated with the first sealed chamber and an air exhaust device communicated with the second sealed chamber;

the exhaust device is matched with the air inlet device, so that negative pressure is formed in the second sealing chamber or the second sealing chamber and the first sealing chamber which are communicated with each other.

Preferably, the air inlet device comprises an air inlet filter and an air inlet valve;

the exhaust device comprises an exhaust fan, an air outlet filter connected with the inlet side of the exhaust fan, and an exhaust valve connected between the air outlet filter and the second sealing chamber.

The invention also provides a radioactive incineration ash collecting and packaging method, which adopts the radioactive incineration ash collecting and packaging system, and comprises the following steps:

s1, placing a metal ash barrel on a first roller way, conveying the metal ash barrel into a first sealed cavity through the first roller way, an opened first sealing door and a second roller way, and stopping rotating the first roller way and the second roller way when the metal ash barrel reaches a cover taking and placing station; the first sealing door is closed;

s2, in the first sealed cavity, the cover taking and placing mechanism takes the cover of the metal ash barrel;

s3, a second sealing door is opened, the metal ash barrel is conveyed into the second sealing cavity through the second roller way and the third roller way, and the second roller way and the third roller way stop rotating when the metal ash barrel reaches an ash discharging and packaging station; the second sealing door is closed; s4, starting a packing device, forming a packaging film into a film bag by heat sealing, and placing the film bag into a metal ash barrel;

s5, unloading the incineration ash into a film bag through a blanking pipe, and after taking the incineration ash with preset weight, heat-sealing and cutting off the film bag by the packaging device;

s6, the second sealing door is opened, the third roller way and the second roller way are reversed, and the metal ash barrel filled with ash is sent back to the first sealing chamber;

S7, after the metal ash bucket reaches a taking and placing cover station of the first sealing chamber, the second sealing door is closed, and the taking and placing cover mechanism covers the bucket cover on the metal ash bucket;

and S8, after the barrel cover of the metal ash barrel is covered, the first sealing door is opened, and the metal ash barrel is sent out of the first sealing chamber through the second roller way and the first roller way.

Preferably, in step S3, after the metal ash bucket reaches the ash unloading and packing station, a lifting mechanism below the third roller way is started to lift the metal ash bucket and weigh the metal ash bucket through a weighing sensor;

in step S5, the incineration ash is discharged into the film bag in the metal ash bucket through the blanking pipe, and when the weight of the metal ash bucket obtained by the weighing sensor reaches a preset weight, the blanking pipe stops discharging ash.

The invention has the beneficial effects that: through the cooperation of the sealed cavity, the inner taking and placing cover mechanism, the blanking pipe, the packing device and the like, radioactive incineration ash is packed into bags in the sealed cavity and placed into a metal ash bucket, the whole process is automatically carried out, personnel do not need to contact with the incineration ash, and personnel irradiation level is reduced; the incineration ash packed into the bag is not easy to leak, and is convenient for subsequent transportation, temporary storage, treatment and the like.

Drawings

The invention will be further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a front view of a radioactive incineration ash collection packaging system according to an embodiment of the present invention;

FIG. 2 is a schematic view of the internal structure of the radioactive incineration ash collection packaging system shown in FIG. 1;

FIG. 3 is a schematic structural view of a second roller way and first and second limiting mechanisms thereon in the radioactive incineration ash collecting and packing system shown in FIG. 2;

FIG. 4 is a side view (internal structure) of the radioactive incineration ash collection packaging system shown in FIG. 2;

FIG. 5 is a schematic view of the film releasing mechanism in FIG. 4;

FIG. 6 is a schematic view showing the structure of a packing device (omitted from the film releasing mechanism) in the radioactive incineration ash collecting and packing system according to an embodiment of the present invention;

FIG. 7 is a schematic view of the film pinch roller assembly and the longitudinal seal mechanism of the bagging apparatus of FIG. 6;

FIG. 8 is a schematic view of the transverse sealing mechanism of the bagging apparatus of FIG. 6;

fig. 9 is a schematic view showing a structure in which a cutter is pushed out of the transverse heat sealer in the transverse mechanism shown in fig. 8.

Detailed Description

For a clearer understanding of technical features, objects and effects of the present invention, a detailed description of embodiments of the present invention will be made with reference to the accompanying drawings.

As shown in fig. 1 and 2, the radioactive incineration ash collecting and packing system according to an embodiment of the present invention includes a first sealed chamber 10, a second sealed chamber 20, a conveying mechanism, a cover taking and placing mechanism 40, a blanking pipe 50, and a packing device, and further includes a control box 100, where the control box 100 is respectively connected to the conveying mechanism, the cover taking and placing mechanism 40, the blanking pipe 50, and the packing device, and controls the opening and closing, modes, etc. of the conveying mechanism, the cover taking and placing mechanism 40, the blanking pipe 50, and the packing device.

The first sealed chamber 10 and the second sealed chamber 20 respectively provide a closed operation space for the metal ash bucket 200, so that the cover can be conveniently taken out of the closed space and the radioactive incineration ash can be conveniently discharged into the metal ash bucket 200. The first sealing chamber 10 and the second sealing chamber 20 are adjacently connected, the first sealing chamber 10 is used for the operations of taking the cover, closing the cover and the like of the metal ash bucket 200, and the second sealing chamber 20 is used for the ash unloading operation, namely, the operation of unloading the incineration ash into the metal ash bucket 200. A first sealing door 11 is arranged on one side of the first sealing chamber 10, which is away from the second sealing chamber 20, and a second sealing door 12 is arranged between the first sealing chamber 10 and the second sealing chamber 20; the first sealing chamber 10 is communicated or isolated with the external environment through the opening and closing of the first sealing door 11, so that the metal ash bucket 200 is conveniently sent in or sent out; communication or isolation between the first sealed chamber 10 and the second sealed chamber 20 is achieved through the second sealing door 12.

The conveying mechanism is used for conveying the metal ash bucket 200 to sequentially convey the metal ash bucket 200 into the first sealing chamber 10 and the second sealing chamber 20, and is also used for conveying the metal ash bucket 200 after being filled with ash out of the second sealing chamber 20 and the first sealing chamber 10. The cover taking and placing mechanism 40 is arranged in the first sealed chamber 10 and is used for sucking or placing the barrel cover 210 on the metal ash barrel 200 back; the blanking pipe 50 is disposed in the second sealed chamber 20 for conveying incineration ash into a film bag in the metal ash bucket 200; the packing device is arranged on the second sealing chamber 20 and is used for forming the packaging film into a film bag and placing the film bag into the metal ash bucket 200, and heat-sealing and cutting are carried out after the film bag burns ash, so that the problems of contamination and sealing inside the metal ash bucket 200 are solved.

Specifically, the first sealed chamber 10 and the second sealed chamber 20 may be formed in a closed casing, respectively, and in this regard, in an embodiment, the radioactive incineration ash collecting and packing system of the present invention may include a first closed casing 110 and a second closed casing 120 that are connected, and the first sealed chamber 10 and the second sealed chamber 20 are formed in the first closed casing 110 and the second closed casing 120, respectively; the second sealing door 12 is disposed on a connecting sidewall of the first airtight housing 110 and the second airtight housing 120, and the first sealing door 11 is disposed on a sidewall of the first airtight housing 110. In another embodiment, the radioactive incineration ash collecting and packing system of the present invention may include a closed box (not shown), in which the first sealing chamber 10 and the second sealing chamber 20 are respectively formed, and are communicated or isolated by opening and closing the second sealing door 12, and the first sealing door 11 is disposed on a sidewall corresponding to the first sealing chamber 10.

The first sealing door 11 and the second sealing door 12 are sealed in an air-filled airtight manner. After the first sealing door 11 or the second sealing door 12 is closed, the inside of the inflatable air-tight gasket is inflated to be in contact with the first sealing door 11 or the second sealing door 12 to form a seal.

To facilitate the observation of the situation in the first sealed chamber 10 and the second sealed chamber 20 by the staff, at least one side wall of the first sealed chamber 10 may be provided with a first peeping window 101, and at least one side wall of the second sealed chamber 20 is provided with a second peeping window 201. The first and second viewing windows 101 and 201, respectively, may be formed of a glass arrangement. The first sealed chamber 10 and the second sealed chamber 20 may be provided therein with illumination lamps.

In addition, the first peeping window 101 may be further provided with a first protective glove 102, so that a worker can conveniently adjust and maintain the equipment in the first sealed chamber 10 through the first protective glove 102; when the device in the first sealed chamber 10 fails, such as the case that the cover taking and placing mechanism 40 fails, the manual cover taking and placing operations are convenient for the staff through the first protective glove 102. Similarly, a second protective glove 202 may be disposed on the second peeping window 201, so as to facilitate manual operation of internal devices.

Further, the side wall of the first sealed chamber 10 may be further provided with an access opening 103 and/or an access door, and the side wall of the second sealed chamber 20 may be further provided with an access opening 203 and/or an access door.

The transport mechanism may further include a first roller way 31, a second roller way 32, and a third roller way 33 sequentially disposed on the transport path of the metal tub 200. Wherein, a first roller way 31 is arranged outside the first sealing door 11, and a second roller way 32 and a third roller way 33 are respectively arranged in the first sealing chamber 10 and the second sealing chamber 20. The second roller way 32 is provided with a cover taking and placing station which is positioned below the cover taking and placing mechanism 40; the third roller way 33 is provided with an ash discharging and packing station which is positioned below the blanking pipe 50. Before ash loading, the first roller way 31 is used for conveying the metal ash bucket 200 into the first sealed chamber 10, and the metal ash bucket 200 is conveyed to a cover taking and placing station in the first sealed chamber 10 in cooperation with the conveying of the second roller way 32; the cooperation of the second roller way 32 and the third roller way 33 can convey the metal ash bucket 200 into the second sealed chamber 20 to reach the ash unloading and packing station for ash loading. After the incineration ash is packed into a bag in the metal ash bucket 200, the third roller way 33, the second roller way 32 and the first roller way 31 are reversely transferred, and the metal ash bucket 200 is sequentially sent out of the second sealing chamber 20, the first sealing chamber 10 and the outside of the first sealing chamber 10.

It will be appreciated that the first roller way 31, the second roller way 32 and the third roller way 33 may each be formed by a plurality of roller arrangements and may each be supported at a certain height by a support.

In the first sealed chamber 10, in order to realize positioning after the metal ash barrel 200 reaches the cover taking and placing station, the cover taking and placing mechanism 40 is convenient for taking and placing the cover, and the second roller way 32 is provided with a first limiting mechanism 71. The first limiting mechanism 71 is located at one side of the cover taking and placing station facing the third roller way 33 and is in communication connection with the first roller way 31 and the second roller way 32, and after the metal ash barrel 200 is conveyed to the cover taking and placing station through the first roller way 31 and the second roller way 32 to trigger the first limiting mechanism 71, the first roller way 31 and the second roller way 32 stop rotating.

In this embodiment, as shown in fig. 2 and 3, the first limiting mechanism 71 includes a first blocking member 711 extending from the second roller way 32 and capable of moving up and down, a first trigger 713 provided on the first blocking member 711, and a first cylinder 712 connected to and driving the first blocking member 711 to move up and down; the first cylinder 712 is arranged below the second roller way 32. The first cylinder 712 is disposed with its telescopic rod upward, and after being started, the telescopic rod extends upward to drive the first blocking member 711 thereon to protrude onto the second roller way 32, and the first blocking member 711 can block the advancing direction of the metal ash bucket 200, so as to limit the metal ash bucket 200 to advance continuously. The first trigger 713 is provided at a side of the first stopper 711 facing the metal tub 200, is triggered after contact with the metal tub 200, and controls the first roller table 31 and the second roller table 32 to stop the transfer operation by a trigger signal. When the metal ash barrel 200 needs to be further advanced onto the third roller way 33, the telescopic rod of the first cylinder 712 moves downwards to drive the first blocking piece 711 to retract below the second roller way 32.

Alternatively, the first stop 711 may be a rod or plate that can extend onto the second roller table 32 through the space between the rollers. The first trigger 713 may be a trigger switch, a sensor, or the like.

Similarly, in order to realize positioning after the metal ash bucket 200 reaches the cover taking and placing station, the cover taking and placing mechanism 40 is convenient to cover the bucket cover 210 on the metal ash bucket 200, and the second roller way 32 is further provided with a second limiting mechanism 72. The second limiting mechanism 72 is located at one side of the cover taking and placing station facing the first roller way 31 and is in communication connection with the second roller way 32 and the third roller way 33, and after the metal ash barrel 200 reaches the cover taking and placing station through the third roller way 33 and the second roller way 32 to trigger the second limiting mechanism 72, the third roller way 33 and the second roller way 32 stop rotating.

The second limiting mechanism 72 may include a second stopper 721 extended on the second roller table 32 to be movable up and down, a second trigger 723 provided on the second stopper 721, and a second cylinder 722 connected to and driving the second stopper 721 to move up and down; a second cylinder 722 is disposed below the second roller way 32. The second cylinder 722 is arranged with its telescopic rod upwards, and after the start, the telescopic rod extends upwards to drive the second blocking element 721 thereon to protrude onto the second roller way 32, and the second blocking element 721 can block the advancing direction of the metal ash bucket 200, so as to limit the metal ash bucket 200 to advance continuously. The second trigger 723 is provided at a side of the second stopper 721 toward the metal tub 200, is triggered after contact with the metal tub 200, and controls the second roller table 32 and the third roller table 33 to stop a conveying operation by a trigger signal. When the metal ash barrel 200 needs to be further advanced onto the first roller way 31, the telescopic rod of the second cylinder 722 moves downwards to drive the second blocking piece 721 to retract below the second roller way 32.

Alternatively, the second stop 721 may be a rod or plate that protrudes onto the second roller table 32 through the gap between the rollers. The second trigger 723 may be a trigger switch, a sensor, or the like.

The first cylinder 712 and the second cylinder 722 are respectively located at the bottom of the first sealed chamber 10, and the access opening 103 may be disposed on the lower end of the sidewall of the first sealed chamber 10, so as to facilitate maintenance of the first cylinder 712, the second cylinder 722, and the like.

In addition, when the second roller way 32 has a larger width, in order to ensure that the metal ash barrel 200 is centered under the cover taking and placing mechanism 40 after reaching the cover taking and placing station, at least one side of the second roller way 32 is further provided with a limiting guide mechanism for limiting the metal ash barrel 200 on a linear path of the cover taking and placing station.

The limiting and guiding mechanism specifically comprises a blocking wall 321 vertically arranged and a plurality of rollers 322 which are used for contacting with the outer surface of the metal ash barrel 200 and can roll; the plurality of rollers 322 are spaced apart along the length of the blocking wall 321. When the metal ash bucket 200 travels on the second roller way 32, the outer surface of the metal ash bucket 200 can be contacted with the roller 322, and the outer surface of the metal ash bucket and the roller 322 can slide relatively, so that the travel of the metal ash bucket 200 is ensured.

In the present embodiment, the cover taking and placing mechanism 40 includes a driving unit 41 and an electromagnet 42; the electromagnet 42 has magnetism after being electrified and is used for sucking up the barrel cover 210 of the metal ash barrel 200, and the electromagnet 42 is demagnetized after being deenergized, so that the barrel cover 210 can be placed back on the metal ash barrel 200. The driving unit 41 is used for driving the electromagnet 42 to lift and lower near the metal ash bucket 200 or far from the metal ash bucket 200.

The drive unit 41 may be realized by a cylinder with a telescopic drive rod facing the second roller table 32, the electromagnet 42 being arranged at the end of the drive rod. After the driving unit 41 is started, the driving rod drives the electromagnet 42 to move downwards to approach the metal ash bucket 200, and the electromagnet 42 can suck the bucket cover 210 of the metal ash bucket 200 after being electrified.

In the second sealed chamber 20, in order to realize positioning after the metal ash bucket 200 reaches the ash unloading and packing station, a third limiting mechanism 73 is arranged on the third roller way 33, the third limiting mechanism 73 is positioned on one side of the ash unloading and packing station, which is far away from the second roller way 32, and is in communication connection with the third roller way 33 and the second roller way 32, and after the metal ash bucket 200 reaches the ash unloading and packing station through the second roller way 32 and the third roller way 33 to trigger the third limiting mechanism 73, the second roller way 32 and the third roller way 33 stop rotating.

The third limiting mechanism 73 may specifically include a baffle 731 disposed on the third roller way 33 or on the outer side, and a third trigger 732 is disposed on the baffle 731. After the metal cask 200 has travelled in place on the third roller way 33, the baffle 731 contacts the outer surface of the metal cask 200, limiting the continued travel of the metal cask 200. At the same time, the third trigger 732 on the baffle 731 also detects the metal tub 200, and controls the second roller table 32 and the third roller table 33 to stop the transfer operation by sending a signal. The third trigger 732 may be a trigger switch or a limit sensor.

Of course, the third limiting mechanism 73 may be provided with reference to the structural form of the first limiting mechanism 71.

The blanking pipe 50 is vertically arranged in the second sealing chamber 20, the top end of the blanking pipe 50 is fixed at the top of the second sealing chamber 20, and the lower end of the blanking pipe is used as a blanking port and faces the third roller way 33. The top end opening of the discharge pipe 50 serves as a feed end for receiving incineration ash from the incineration disposal system, and the feed end controls the opening and closing of itself through the ash discharge valve 51. The ash discharge bagging station is directly below the blanking tube 50.

The bagging apparatus is used to pay out and form a roll of packaging film into a film pouch 300, and seal (heat seal and cut) the film pouch 300 after filling with ash. Specifically, as shown in fig. 2 and 4, the packaging device comprises a film placing mechanism 61, a forming mechanism 62, a film conveying pinch roller assembly 63, a longitudinal sealing mechanism 64 and a transverse sealing mechanism 65.

A film feeding mechanism 61 is provided outside the second sealed chamber 20 for feeding a roll of packaging film (a rolled packaging film), and feeding the packaging film in a band-like form to a forming mechanism 62. In this regard, the side walls of the second sealed chamber 20 may be provided with access openings to facilitate passage of the packaging film through the access openings to the forming mechanism 62.

Referring to fig. 4 and 5, the film releasing mechanism 61 may specifically include a housing 611, a material roller 612 mounted on the housing 611, and a limiting rotating shaft assembly. The film releasing mechanism 61 is fixed outside the second sealed chamber 20 by a housing 611. A roll 612 is rotatably disposed on the housing 611 for placing a roll of packaging film. The spacing pivot assembly includes a plurality of spacing pivots 613, the spacing pivots 613 being spaced apart in the direction of the stock of the film roll such that the spacing pivot assembly batch roller 612 places the film to the forming mechanism 62.

The forming mechanism 62 is provided outside the upper end of the blanking pipe 50, receives the packaging film discharged from the film discharging mechanism 61, and forms the packaging film into an annular film (cylindrical shape) around the outer periphery of the blanking pipe 50.

The film conveying pinch roller assembly 63 and the longitudinal sealing mechanism 64 are respectively arranged outside the blanking pipe 50 and below the forming mechanism 62, wherein the film conveying pinch roller assembly 63 conveys the annular film downwards along the periphery of the blanking pipe 50 through a rotating wheel and the like, and the longitudinal sealing mechanism 64 is used for thermally sealing two sides of the annular film in the longitudinal direction so as to form a closed cylindrical structure. The transverse sealing mechanism 65 is arranged below the longitudinal sealing mechanism 64 and is used for performing hot-pressing sealing on the bottom of the annular film to form a film bag, and is also used for performing hot-pressing sealing on the film bag after the incineration ash is taken out from the film bag 300, so that the incineration ash is packaged. The transverse sealing mechanism 65 is provided with a cutter in the middle, and the film bag 300 can be cut off after hot-pressing sealing.

Referring to fig. 2, 6 and 7, the film transporting press wheel assembly 63 includes a press wheel 631, a press wheel pressing unit 632 and a pulley driving unit 633. The pressing roller pressing unit 632 is used to push the pressing roller 631, so as to press the packaging film (i.e., the ring-shaped film) between the pressing roller 631 and the surface of the blanking tube 50. The belt wheel driving unit 633 is used for driving the pressing wheel 631 to rotate, and under the friction action, the packaging film is pulled from top to bottom along the blanking pipe 50, thereby realizing the film conveying function.

The pinch roller pressing unit 632 may be implemented by an air cylinder; the pulley driving unit 633 may be implemented using a motor.

The longitudinal sealing mechanism 64 includes a longitudinal heat sealer 641 and a longitudinal heat sealer push unit 642. The longitudinal heat sealer 641 has a heating function, and can heat the platen on the longitudinal heat sealer 641 to a certain temperature. The longitudinal heat sealer 641 is disposed along the axial direction of the blanking pipe 50. The longitudinal heat sealer 641 is driven by a longitudinal heat sealer pushing unit 642, and the longitudinal heat sealer pushing unit 642 drives a pressing plate on the longitudinal heat sealer 641 to press the packaging film to the blanking pipe 50, and the packaging film is thermally fused and sealed under the action of pressure and high temperature to finish the longitudinal sealing.

The film transporting pinch roller assembly 63 and the longitudinal sealing mechanism 64 are arranged and positioned on the periphery of the blanking pipe 50 through a bracket. In operation, film transport pinch roller assembly 63 and longitudinal heat sealer 641 alternate. After the film to be transported pinch roller assembly 63 transports the packaging film for a set length, the rotation is stopped. At this time, the packaging film is pressed, heat-melted and sealed by the longitudinal heat sealer 641.

Referring to fig. 2, 6, 8 and 9, the transverse sealing mechanism 65 may include a transverse heat sealer 651, a transverse heat sealer pushing unit 652, a cutter 653, and a cutter pushing unit 654. The transverse heat sealing machine 651 comprises an upper pressing plate and a lower pressing plate; the transverse heat sealer has a heating function, and can heat the upper and lower platens of the transverse heat sealer 651 to a desired temperature. The transverse heat sealers 651 are generally arranged in pairs and are arranged opposite to each other at intervals, the middle of the two transverse heat sealers 651 is used for passing through the film bags, and the transverse heat sealer pushing unit 652 pushes the two transverse heat sealers 651 to move towards each other, so that the film bag openings can be pressed. Under the action of pressure and high temperature, the film bag is hot melted and sealed, thus completing two transverse seals.

The cutter 653 is built in one of the lateral heat sealers 651, and the cutter 653 is located between an upper platen and a lower platen of the lateral heat sealer 651. After the transverse sealing is completed, the cutter 653 is pushed out by the cutter push unit 654 to cut off the film bag.

The transverse sealing mechanism 65 is mounted in the second sealed chamber 20 by a bracket 67 positioned below the longitudinal sealing mechanism 64. The lateral heat sealer pushing unit 652 and the cutter pushing unit 654 may be implemented by air cylinders, respectively.

In addition, the radioactive incineration ash collecting and packing system of the present invention may further include a lifting mechanism 80 for lifting up the metal ash bucket 200, and a load cell (not shown) for weighing the metal ash bucket 200. The jacking mechanism 80 is arranged below the third roller way 33, and the weighing sensor is arranged on the jacking mechanism 80; after the metal ash bucket 200 is jacked up by the jacking mechanism 80 and separated from the third roller way 33, the weight of the metal ash bucket 200 can be obtained by weighing the metal ash bucket 200 by the weighing sensor.

The jacking mechanism 80 may comprise a jacking drive unit 81, a jacking support 82 mounted below the third roller table 33. The piston cylinder of the jacking driving unit 81 faces upwards to the third roller way 33, the jacking supporting piece 82 is arranged on the piston cylinder of the jacking driving unit 81, moves up and down along with the telescopic rod, and jacks up the metal ash barrel 200 through the third roller way 33. The load cell may be disposed on the jacking support 82. The jacking driving unit 81 can be realized by adopting an air cylinder or a motor matched with a gear assembly and the like.

After the metal ash bucket 200 reaches the ash unloading and packing station, the lifting mechanism 80 starts to lift the metal ash bucket 200 and simultaneously weigh the metal ash bucket 200 through the weighing sensor, so that the net weight of the metal ash bucket 200 can be obtained. When the discharging pipe 50 discharges ash, the weight of the incineration ash filled in the inner film bag 300 of the metal ash barrel 200 can be obtained in real time through the weighing sensor, and when the weight of the metal ash barrel 200 after the ash is filled reaches the preset weight, the ash discharge valve 51 of the discharging pipe 50 is controlled to be closed through the control system by a signal sent by the weighing sensor to stop discharging the ash, so that quantitative collection and packaging of the incineration ash are realized.

The lifting mechanism 80 is located at the bottom of the second sealed chamber 20, and for this purpose, the access opening 203 on the second sealed chamber 20 may be disposed on the lower end of the sidewall of the second sealed chamber 20, so as to facilitate maintenance of devices such as the lifting mechanism 80.

Further, in order to prevent the air containing radioactive substances in the first sealed chamber 10 and the second sealed chamber 20 from leaking out, the radioactive incineration ash collecting and packing system of the present invention further comprises an air inlet device communicated with the first sealed chamber 10 and an air exhaust device communicated with the second sealed chamber 20. The air exhaust device and the air inlet device are matched to enable the air inlet quantity to be smaller than the air exhaust quantity, so that negative pressure is formed in the second sealed chamber 20 or the communicated second sealed chamber 20 and the first sealed chamber 10.

The air inlet device may include an air inlet filter 90 and an air inlet valve 901. The air inlet filter 90 is connected to an air inlet provided in the first sealed chamber 10 through an air inlet valve 901, and filters air entering the first sealed chamber 10.

The exhaust means includes an exhaust fan 91, an air outlet filter 92 connected to an inlet side of the exhaust fan 91, and an exhaust duct 93 connected between the air outlet filter 92 and the second sealed chamber 20. When the exhaust fan 91 is operated, air in the second sealed chamber 20 is extracted, and the extracted air is filtered by the air outlet filter 92 and then is conveyed to a corresponding processing system through the exhaust fan 91. The exhaust pipe 93 is provided with an exhaust valve 94. Alternatively, the exhaust duct 93 may be replaced by an exhaust valve 94, and the exhaust valve 94 is connected between the air outlet filter 92 and the second sealed chamber 20, and has an on-off function.

The first sealed chamber 10 is provided with a first differential pressure gauge 104, the second sealed chamber 20 is provided with a second differential pressure gauge 204, and the first differential pressure gauge 104 and the second differential pressure gauge 204 are respectively used for monitoring the internal pressure of the first sealed chamber 10 and the second sealed chamber 20.

The radioactive incineration ash collecting and packaging method realized by the radioactive incineration ash collecting and packaging system can comprise the following steps:

S1, placing the metal ash bucket 200 on a first roller way 31, opening a first sealing door 11, and conveying the metal ash bucket 200 into the first sealing chamber 10 through the first roller way 31, the opened first sealing door 11 and a second roller way 32.

Triggering the first limiting mechanism 71 when the metal ash barrel 200 reaches the cover taking and placing station, and stopping rotation of the first roller way 31 and the second roller way 32; the first sealing door 11 is closed.

S2, in the first sealed chamber 10, the cover taking and placing mechanism 40 takes the cover of the metal ash barrel 200.

Specifically, the cover taking and placing mechanism 40 is started, the electromagnet 42 of the cover taking and placing mechanism 40 descends, the barrel cover 210 on the metal ash barrel 200 is electrified to be sucked, and the electromagnet 42 lifts up to bring the barrel cover 210 away from the metal ash barrel 200, so that the metal ash barrel 200 is opened.

S3, the second sealing door 12 is opened, and the metal ash bucket 200 is conveyed into the second sealing chamber 20 through the second roller way 32 and the third roller way 33. Triggering the third limiting mechanism 73 when the metal ash bucket 200 reaches an ash unloading and packing station, and stopping rotation of the second roller way 32 and the third roller way 33; the second sealing door 12 is closed.

After the metal ash bucket 200 reaches the ash unloading and packing station, the lifting mechanism 80 below the third roller way 33 is started to lift the metal ash bucket 200 and weigh the metal ash bucket 200 through the weighing sensor at the same time, so as to obtain the net weight of the metal ash bucket 200.

S4, starting the packing device, heat-sealing and forming the packaging film into a film bag 300, and placing the film bag into the metal ash barrel 200.

The specific forming manner of the packaging film can be referred to in the above radioactive incineration ash collecting and packaging system, and will not be described herein.

S5, unloading the incineration ash into the film bag 300 through the blanking pipe 50, and sealing the film bag 300 by a packaging device after the film bag 300 is filled with the incineration ash with the preset weight.

Wherein, the standard of the finished assembly is as follows: the weight of the metal ash bucket 200 (with incineration ash) acquired by the load cell on the jacking mechanism 80 reaches a predetermined weight. After the incineration ash is completely loaded and taken out by the film bag 300 formed in the metal ash bucket 200, the discharging pipe 50 stops discharging ash. The transverse sealing mechanism 65 of the packaging device seals the film bag 300, and cuts off the film bag 300 after sealing.

S6, after the metal ash barrel 200 finishes ash loading, the second sealing door 12 is opened, the third roller way 33 and the second roller way 32 are reversed, and the metal ash barrel 200 after ash loading is sent back to the first sealing chamber 10.

In step S6, after the metal ash bucket 200 finishes loading ash, the lifting mechanism 80 is reset, and the metal ash bucket 200 is lowered and reset. After the metal ash bucket 200 filled with the incineration ash is reset, the incineration ash is reversely transferred back to the first sealing chamber 10 through the third roller way 33 and the second roller way 32.

S7, after the metal ash bucket 200 reaches the cover taking and placing station of the first sealing chamber 10, the second sealing door 12 is closed, and the cover taking and placing mechanism 40 covers the bucket cover 210 on the metal ash bucket 200.

Specifically, when the metal ash barrel 200 reaches the cover taking and placing station, the second limiting mechanism 72 is triggered, and the second roller way 32 and the third roller way 33 stop rotating; the second sealing door 12 is closed. The cover taking and placing mechanism 40 is started, the electromagnet 42 of the cover taking and placing mechanism 40 descends, the cover 210 sucked on the cover taking and placing mechanism is placed on the metal ash barrel 200, the electromagnet 42 is separated from the cover 210 after power is lost, and the cover taking and placing mechanism ascends and resets. The metal ash bucket 200 is sealed by a bucket cover 210, and the bagged incineration ash is enclosed in the metal ash bucket 200.

S8, after the barrel cover 210 of the metal ash barrel 200 is covered, the first sealing door 11 is opened, and the metal ash barrel 200 is sent out of the first sealing chamber 10 through the second roller way 32 and the first roller way 31.

The incineration ash sent out of the first sealed chamber 10 is packed into a bag by the film bag 300, so that the incineration ash is not easy to leak. The bagged incineration ash is transported, temporarily stored and processed, and the metal ash barrel 200 can be reused, so that the bagged incineration ash is packaged.

The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present invention.

Claims (22)

1. The radioactive incineration ash collecting and packaging system is characterized by comprising a first sealed cavity, a second sealed cavity, a conveying mechanism, a taking and placing cover mechanism, a blanking pipe and a packaging device;

the first sealing chamber and the second sealing chamber are adjacently connected, a first sealing door is arranged on one side of the first sealing chamber, which faces away from the second sealing chamber, and a second sealing door is arranged between the first sealing chamber and the second sealing chamber;

the conveying mechanism comprises a first roller way, a second roller way and a third roller way, wherein the first roller way, the second roller way and the third roller way are used for conveying the metal ash bucket, the first roller way is arranged on the outer side of the first sealing door, and the second roller way and the third roller way are respectively arranged in the first sealing chamber and the second sealing chamber;

the cover taking and placing mechanism is arranged in the first sealed cavity and is used for sucking or covering a barrel cover on the metal ash barrel; the blanking pipe is arranged in the second sealed cavity and is used for conveying incineration ash into a film bag in the metal ash barrel;

the packing device is arranged on the second sealing chamber and is used for forming the packaging film into a film bag, placing the film bag into a metal ash bucket, and performing heat sealing and cutting after the film bag is filled with incineration ash.

2. The radioactive incineration ash collection and packaging system according to claim 1, further comprising a closed box body, wherein the first sealing chamber and the second sealing chamber are respectively formed in the closed box body and are communicated or isolated by opening and closing of the second sealing door; or alternatively, the process may be performed,

the radioactive incineration ash collecting and packaging system further comprises a first closed box body and a second closed box body which are connected, wherein the first sealed chamber and the second sealed chamber are respectively formed in the first closed box body and the second closed box body; the second sealing door is arranged on the connecting side wall of the first sealing box body and the second sealing box body.

3. The radioactive incineration ash collection and packing system according to claim 1, wherein at least one side wall of the first sealed chamber is provided with a first peeping window and/or an illumination lamp; at least one side wall of the second sealing chamber is provided with a second peeping window and/or an illuminating lamp.

4. The radioactive incineration ash collection and packing system according to claim 3, wherein a first protective glove is provided on the first peeping window; and a second protective glove is arranged on the second peeping window.

5. The radioactive incineration ash collection packaging system according to claim 1, further characterized in that an access opening and/or an access door is provided on a side wall of the first sealed chamber and/or the second sealed chamber.

6. The radioactive incineration ash collecting and packing system according to claim 1, wherein a cover taking and placing station positioned below the cover taking and placing mechanism and a first limiting mechanism positioned on one side of the cover taking and placing station facing the third roller way are arranged on the second roller way;

the first limiting mechanism is in communication connection with the first roller way and the second roller way, and after the metal ash barrel reaches the cover taking and placing station through the first roller way and the second roller way, the first roller way and the second roller way stop rotating.

7. The radioactive incineration ash collection and packing system according to claim 6, wherein the first limit mechanism comprises a first stopper which can move up and down and extends out of the second roller way, a first trigger arranged on the first stopper, and a first cylinder which is connected with and drives the first stopper to move up and down; the first cylinder is arranged below the second roller way.

8. The radioactive incineration ash collection and packaging system according to claim 6, wherein a second limiting mechanism positioned on one side of the cover taking and placing station facing the first roller way is arranged on the second roller way;

the second limiting mechanism is in communication connection with the second roller way and the third roller way, and after the metal ash barrel reaches the cover taking and placing station through the third roller way and the second roller way to trigger the second limiting mechanism, the third roller way and the second roller way stop rotating.

9. The radioactive incineration ash collection and packing system according to claim 8, wherein the second limit mechanism includes a second stopper that is extended on the second roller table in an up-and-down movement, a second trigger that is provided on the second stopper, and a second cylinder that is connected to and drives the second stopper to move up-and-down; the second cylinder is arranged below the second roller way.

10. The radioactive incineration ash collecting and packing system according to claim 6, wherein a limiting guide mechanism for limiting the metal ash barrel on the linear path of the cover taking and placing station is further arranged on at least one side of the two sides of the second roller way in the length direction;

The limiting guide mechanism comprises a baffle wall which is vertically arranged and a plurality of rollers which are used for being in contact with the outer surface of the metal ash barrel and can roll; the rollers are arranged at intervals along the length direction of the retaining wall.

11. The radioactive incineration ash collecting and packing system according to claim 1, wherein the third roller way is provided with an ash discharging and packing station positioned below the blanking pipe and a third limiting mechanism positioned on one side of the ash discharging and packing station away from the second roller way;

the third limiting mechanism is in communication connection with the third roller way and the second roller way, and after the metal ash bucket is conveyed to reach the ash unloading and packaging station through the second roller way and the third roller way to trigger the third limiting mechanism, the second roller way and the third roller way stop rotating.

12. The radioactive incineration ash collection and packing system according to claim 11, wherein the third limit mechanism includes a baffle plate disposed on or outside the third roller way, and a third trigger is disposed on the baffle plate.

13. The radioactive incineration ash collection and packing system according to claim 1, wherein the cover taking and placing mechanism includes a driving unit and an electromagnet;

The driving unit faces the second roller way through a telescopic driving rod, and the electromagnet is arranged at the end part of the driving rod; after the driving unit is started, the driving rod drives the electromagnet to move downwards to be close to the metal ash bucket, and the bucket cover of the metal ash bucket can be sucked after the electromagnet is electrified.

14. The radioactive incineration ash collection and packaging system according to any one of claims 1 to 13, wherein the packaging device comprises a film releasing mechanism arranged outside the second sealed cavity, a forming mechanism arranged outside the upper end of the blanking pipe, a film conveying pinch roller assembly and a longitudinal sealing mechanism arranged outside the blanking pipe and below the forming mechanism, and a transverse sealing mechanism arranged below the longitudinal sealing mechanism;

the packaging film is formed by the forming mechanism around the periphery of the blanking pipe, the film conveying pinch roller component transmits the annular film to the longitudinal sealing mechanism, the longitudinal sealing mechanism is used for heat-sealing the two longitudinal sides of the annular film, and the transverse sealing mechanism is used for heat-sealing the bottom of the annular film to form a film bag and cutting the film bag.

15. The radioactive incineration ash collection and packing system according to claim 14, wherein the film transporting press wheel assembly comprises a press wheel, a press wheel pressing unit and a belt wheel driving unit; the pinch roller compaction unit is used for pushing the pinch roller to compact the packaging film between the pinch roller and the surface of the blanking pipe; the belt wheel driving unit is used for driving the pinch roller to rotate and pulling the packaging film from top to bottom along the blanking pipe;

the longitudinal sealing mechanism comprises a longitudinal heat sealing machine and a longitudinal heat sealing machine pushing unit; the longitudinal heat sealing machine is arranged along the axial direction of the blanking pipe, and the longitudinal heat sealing machine pushing unit is used for pushing the longitudinal heat sealing machine to press the packaging film to the blanking pipe so that the packaging film is melted and sealed.

16. The radioactive incineration ash collection and packing system according to claim 14, wherein the transverse sealing mechanism comprises two transverse heat sealing machines, a transverse heat sealing machine pushing unit, a cutter and a cutter pushing unit; the two transverse heat sealing machines are oppositely arranged at intervals, and the transverse heat sealing machine pushing unit is used for pushing the two transverse heat sealing machines to move in opposite directions and tightly press a film bag opening passing through the space between the two transverse heat sealing machines; the cutter is arranged between an upper pressing plate and a lower pressing plate of the transverse heat sealing machine, and the cutter pushing unit is used for pushing the cutter out of the transverse heat sealing machine to cut off the film bag.

17. The radioactive incineration ash collection and packing system according to any one of claims 1 to 13, further comprising a lifting mechanism for lifting up the metal ash bucket, a load cell for weighing the metal ash bucket;

the jacking mechanism is arranged below the third roller way, and the weighing sensor is arranged on the jacking mechanism.

18. The radioactive incineration ash collection and packing system according to claim 17, wherein the jacking mechanism comprises a jacking driving unit and a jacking support installed below the third roller way;

the telescopic rod of the jacking driving unit faces upwards to the third roller way, the jacking supporting piece is arranged on the telescopic rod of the jacking driving unit, moves up and down along with the telescopic rod, and jacks up the metal ash barrel through the third roller way.

19. The radioactive incineration ash collection and packing system according to any one of claims 1 to 13, further comprising an air intake device connected to the first sealed chamber, an air exhaust device connected to the second sealed chamber;

the exhaust device is matched with the air inlet device, so that negative pressure is formed in the second sealing chamber or the second sealing chamber and the first sealing chamber which are communicated with each other.

20. The radioactive incineration ash collection and packing system according to claim 19, wherein the air intake device includes an air intake filter and an air intake valve;

the exhaust device comprises an exhaust fan, an air outlet filter connected with the inlet side of the exhaust fan, and an exhaust valve connected between the air outlet filter and the second sealing chamber.

21. A method for collecting and packing radioactive incineration ash, characterized in that the radioactive incineration ash collecting and packing system according to any one of claims 1 to 20 is adopted, the method for collecting and packing radioactive incineration ash comprises the following steps:

s1, placing a metal ash barrel on a first roller way, conveying the metal ash barrel into a first sealed cavity through the first roller way, an opened first sealing door and a second roller way, and stopping rotating the first roller way and the second roller way when the metal ash barrel reaches a cover taking and placing station; the first sealing door is closed;

s2, in the first sealed cavity, the cover taking and placing mechanism takes the cover of the metal ash barrel;

s3, a second sealing door is opened, the metal ash barrel is conveyed into the second sealing cavity through the second roller way and the third roller way, and the second roller way and the third roller way stop rotating when the metal ash barrel reaches an ash discharging and packaging station; the second sealing door is closed; s4, starting a packing device, forming a packaging film into a film bag by heat sealing, and placing the film bag into a metal ash barrel;

S5, unloading the incineration ash into a film bag through a blanking pipe, and after taking the incineration ash with preset weight, heat-sealing and cutting off the film bag by the packaging device;

s6, the second sealing door is opened, the third roller way and the second roller way are reversed, and the metal ash barrel filled with ash is sent back to the first sealing chamber;

s7, after the metal ash bucket reaches a taking and placing cover station of the first sealing chamber, the second sealing door is closed, and the taking and placing cover mechanism covers the bucket cover on the metal ash bucket;

and S8, after the barrel cover of the metal ash barrel is covered, the first sealing door is opened, and the metal ash barrel is sent out of the first sealing chamber through the second roller way and the first roller way.

22. The method for collecting and packing the radioactive incineration ash according to claim 21, wherein in the step S3, after the metal ash bucket arrives at the ash unloading and packing station, a lifting mechanism below the third roller way is started to lift the metal ash bucket and weigh the metal ash bucket through a weighing sensor;

in step S5, the incineration ash is discharged into the film bag in the metal ash bucket through the blanking pipe, and when the weight of the metal ash bucket obtained by the weighing sensor reaches a preset weight, the blanking pipe stops discharging ash.