CN216171164U

CN216171164U - Radioactive gas purification device

Info

Publication number: CN216171164U
Application number: CN202122332096.XU
Authority: CN
Inventors: 刘飞
Original assignee: Jiangsu Supersense Technology Co ltd
Current assignee: Jiangsu Supersense Technology Co ltd
Priority date: 2021-09-26
Filing date: 2021-09-26
Publication date: 2022-04-05
Anticipated expiration: 2031-09-26

Abstract

The utility model discloses a radioactive gas purification device, which comprises a machine shell, wherein an air suction chamber and a purification chamber are arranged in the machine shell; the shell is provided with an air inlet, the air suction chamber is also provided with a fan, and the fan sucks air into the air suction chamber through the air inlet; the air suction chamber is communicated with a first breather pipe, the purification chamber is internally provided with a first filter and a second filter, and the first filter is internally provided with a filtering solution; the first breather pipe is communicated with the bottom of the first filter, and the end part of the first breather pipe is communicated with a shower type air nozzle; the top end of the first filter is also communicated with a second vent pipe, and one end of the second vent pipe, which is far away from the first filter, is communicated with the bottom end of the second filter; the second filter is provided with an active carbon adsorption layer and an iodine adsorption layer, the top end of the second filter is also communicated with a third air exhaust pipe, the shell is also provided with an air outlet, and the third air exhaust pipe is communicated with the air outlet. The utility model can efficiently filter the air in small spaces such as laboratories, wards and the like in real time.

Description

Radioactive gas purification device

Technical Field

The utility model relates to the field of radioactive gas purification equipment, in particular to a radioactive gas purification device.

Background

Radioactive waste gases are mainly generated from exhaust gas and equipment leakage in radioactive operation processes, and inevitably generate radioactive aerosol and radioactive gas in the production of atomic energy industry or the operation of nuclear facilities, particularly in isotope production workshops, nuclear enterprise equipment rooms, laboratories, hospitals and other places. Taking a hospital as an example, when a patient is treated with a radiopharmaceutical in the hospital, a large amount of radioactive waste gas is generated, and for example, when the radiopharmaceutical is injected and the radionuclide is encapsulated, the radiopharmaceutical volatilizes into the air in a hospital ward, so that air pollution of a local space is caused.

Generally, industrial waste gas is subjected to multi-stage purification treatment by adopting large-scale equipment and a comprehensive process, and can be discharged after the treatment reaches the standard. And laboratory, hospital and factory building etc. only need generally carry out the filtration of airing exhaust, can purify the radioactive gas in the room to prevent that radioactive gas from reaching certain concentration in local space, endanger staff's health. At present, there are also some radioactive gas purification devices suitable for small spaces such as laboratories and hospital wards, and for example, chinese patent application No. 201920505585 discloses a radioactive gas purifier.

However, these small purifiers have a simple internal structure, and due to the volume limitation, it is difficult to have a purification capacity as a conventional large industrial purifier, and the purification efficiency is low, so that it is necessary to develop a novel radioactive gas purification apparatus suitable for use in a small space such as a laboratory and a ward.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides a radioactive gas purification device which is compact in structure, small in size, suitable for filtering and purifying radioactive gas in small spaces such as laboratories and hospital wards and high in purification efficiency.

The utility model is realized by the following technical scheme:

a radioactive gas purification device comprises a machine shell, wherein an air suction chamber and a purification chamber communicated with the air suction chamber are arranged in the machine shell; the shell is provided with an air inlet communicated with the air suction chamber, the air suction chamber is also provided with a fan, and the fan sucks air into the air suction chamber through the air inlet;

one end of the air suction chamber, which is close to the purification chamber, is communicated with a first vent pipe, and the first vent pipe extends into the purification chamber; a first filter and a second filter are arranged in the purification chamber, and a filtering solution is arranged in the first filter; the first breather pipe is communicated with the bottom of the first filter, and one end of the first breather pipe at the bottom of the first filter is also communicated with a shower type air nozzle;

the top end of the first filter is also communicated with a second vent pipe, and one end of the second vent pipe, which is far away from the first filter, is communicated with the second filtering bottom end; the second filter is provided with an active carbon adsorption layer and an iodine adsorption layer, the top end of the second filter is communicated with a third air exhaust pipe, the shell is further provided with an air outlet, and the third air exhaust pipe is communicated with the air outlet.

Furthermore, the machine shell is arranged vertically, and the air suction chamber is positioned at the top of the purification chamber; the air inlet is arranged at the top end of the machine shell, the first filter and the second filter are arranged in the purifying chamber side by side, and the air outlet is arranged on the side wall of the machine shell.

Furthermore, the air suction chamber is arranged in a conical shape, and the air inlet and the first vent pipe are respectively communicated with two ends of the air suction chamber; the first breather pipe is communicated with one end with a smaller opening of the air suction chamber, the air inlet is communicated with one end with a larger opening of the air suction chamber, and the air inlet is also provided with a flow equalizing plate for guiding air.

Further, a threaded flange is arranged at the air inlet on the shell, and a mounting housing is in threaded connection with the threaded flange; the flow equalizing plate is arranged on the mounting housing, and the dust screen is detachably connected to one surface of the mounting housing, which is positioned in the air suction chamber.

Further, the bottom of the first filter is also communicated with a spray pipe, and a water suction pump is arranged on the spray pipe; the spray pipe is also communicated with the top part of the first filter, and one end of the spray pipe at the top part of the first filter is also communicated with an atomizing spray head.

Furthermore, a first cleaning pipe is connected to the top of the first filter, and one end of the first cleaning pipe, which is far away from the first filter, extends to the outer wall of the machine shell; the bottom of the first filter is also connected with a second cleaning pipe, and one end, far away from the first filter, of the second cleaning pipe extends to the outer wall of the machine shell.

Furthermore, an installation chamber for installing a second filter is arranged in the purification chamber, a second opening communicated with the installation chamber is further formed in the side wall of the machine shell, and an opening and closing door is detachably connected to the second opening.

Further, second filter top and bottom all are provided with the blow vent, second breather pipe and third breather pipe are dismantled with two blow vents and are connected respectively.

Furthermore, a one-way valve is further arranged at one end of the first vent pipe close to the first filter.

Compared with the prior art, the utility model has the advantages that:

1. through the setting of room, clean room, first filter, gondola water faucet formula jet head and second filter of breathing in, can play and carry out high-efficient filterable effect to radioactive gas under keeping the less volume of purifier.

2. Through being vertical setting with the casing to the corresponding position that sets up suction chamber, clean room, first filter and second filter can play and reduce the purifier volume, makes its area reduce, is convenient for remove, has increased the effect of its flexibility.

3. The air suction chamber is arranged to be conical, and the air inlet is provided with the flow equalizing plate for guiding air, so that the effects of fully sucking air in a room and leading the air into the first filter by forming high-pressure air flow can be achieved.

4. Through the arrangement of the threaded flange, the mounting cover shell and the dustproof net, the effect of preventing dust from entering the purifying device and preventing the dust from polluting the filter can be achieved.

5. Through the setting of shower, suction pump and atomizing shower head, can play and make filtering solution fully contact with the radioactive substance among the radioactive gas to degrade or deposit out the radioactive substance among the gas, thereby reach the effect of high-efficient purification.

6. Through the setting of first scavenge pipe and second scavenge pipe, can play the effect of being convenient for change filtering solution, perhaps wash first filter water-through.

7. Through setting up installation room, second opening and the door that opens and shuts, set up second breather pipe and third breather pipe and dismantle with the second filter respectively and be connected, can play the effect of being convenient for change the second filter.

8. Through set up the check valve on first breather pipe, can play the effect that prevents to filter solution and flow back to in the first breather pipe.

Drawings

FIG. 1 is a schematic overall structure diagram of an embodiment of the present invention;

fig. 2 is a schematic internal structure diagram according to an embodiment of the present invention.

1. A housing; 2. an air suction chamber; 21. a fan; 22. an air inlet; 23. a first vent pipe; 3. installing a housing; 31. a flow equalizing plate; 32. a dust screen; 4. a threaded flange; 5. a clean room; 6. a first filter; 61. a shower pipe; 62. a water suction pump; 63. an atomizing spray header; 7. a second filter; 71. an activated carbon adsorption layer; 72. an iodine adsorbing layer; 9. a second vent pipe; 10. a third vent pipe; 11. an air outlet; 12. a one-way valve; 13. a first cleaning pipe; 14. a second cleaning pipe; 15. an installation chamber; 16. opening and closing the door; 17. a shower type air nozzle.

Detailed Description

The following non-limiting detailed description of the present invention is provided in connection with the preferred embodiments and accompanying drawings. In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

As shown in fig. 1 and 2, a radioactive gas purification apparatus according to an embodiment of the present invention includes a housing 1, and a suction chamber 2 and a purification chamber 5 are disposed in the housing 1 and communicate with each other. The casing 1 is provided with an air inlet 22 communicated with the air suction chamber 2, the air suction chamber 2 is also provided with a fan 21, and the fan 21 sucks air in a laboratory or a hospital room into the air suction chamber 2 through the air inlet 22. The clean room 5 is provided therein with a first filter 6 having a filtering solution, and a second filter 7 having an activated carbon adsorption layer 71 and an iodine adsorption layer 72. One end of the inspiration chamber 2 close to the purification chamber 5 is communicated with a first vent pipe 23, and the first vent pipe 23 extends into the purification chamber 5 and is communicated with the bottom of the first filter 6. The top of the first filter 6 is communicated with a second vent pipe 9, and the other end of the second vent pipe 9 is communicated with the bottom end of the second filter 7. The top end of the second filter 7 is also communicated with a third air pipe 10, and the third air pipe 10 is communicated with an air outlet 11 arranged on the side wall of the machine shell 1. The air blower 21 sucks air in the laboratory and hospital rooms into the inhalation chamber 2, the air enters the first filter 6 through the first vent pipe 23 and then enters the second filter 7 for filtering and purifying, and finally the air with the radioactive substances removed is discharged into the rooms from the air outlet 11.

As shown in fig. 2, in the present embodiment, the air suction chamber 2 is disposed in a conical shape, and the air inlet 22 and the first air pipe 23 are respectively connected to two ends of the air suction chamber 2. The air inlet 22 is communicated with the end with the larger opening of the air suction chamber 2, and the first vent pipe 23 is communicated with the end with the smaller opening of the air suction chamber 2, so that air in the room can be sufficiently sucked and high-pressure air flow is formed to be introduced into the first filter 6. A shower-type air nozzle 17 (a commercially available porous air nozzle) is provided on an end of the first air pipe 23 inside the first filter 6 so that air is jetted radially into the filtered solution of the first filter 6. The filtering solution can be in full contact with the radioactive medium in the air to react, so that the radioactive medium is degraded and neutralized or precipitates are formed and precipitated in the filtering solution, and the radioactive medium in the air can be efficiently removed; a check valve 12 is installed on an end of the first vent pipe 23 adjacent to the first filter 6 so that the filtered solution in the first filter 6 is prevented from flowing back into the first vent pipe 23. In addition, the bottom of the first filter 6 can be communicated with a spray pipe 61, the other end of the spray pipe 61 is communicated with the top end of the first filter 6, and an atomizing spray head 63 is further mounted at one end of the spray pipe 61 on the top of the first filter 6. The spray pipe 61 is provided with a small water suction pump 62, so that the filtering solution at the bottom of the first filter 6 can be atomized and sprayed to the upper air layer of the first filter 6, and the particulate medium in the air can be fully contacted with the atomized filtering solution, thereby further improving the purification effect.

As shown in fig. 1 and fig. 2, in the present embodiment, an installation chamber 15 for installing the second filter 7 is further provided in the clean room 5, and a second opening is further provided on the cabinet 1 at the installation chamber 15, and an opening and closing door (which may be hinged to be a single door or a double door, or a snap connection) is detachably connected to the second opening. The top and the bottom of second filter 7 all are provided with the vent, and second breather pipe 9 and third breather pipe 10 are dismantled with two vents respectively and are connected, if set the rubber hose cover to second breather pipe 9 and third breather pipe 10 tip and connect on the vent. After long-term use, the worker can open the opening and closing door from the outside, and then pull out the second vent pipe 9 and the third vent pipe 10 at the two ends of the second filter 7, so that the second filter 7 can be taken out for replacement. The filtering media such as activated carbon in the second filter 7 may lose effectiveness after long-term use, which results in reduced filtering efficiency and poor filtering effect of the purification device; through regularly changing second filter 7, can improve the filter effect of this device to protect medical personnel or testing personnel better. Correspondingly, a first cleaning pipe 13 and a second cleaning pipe 14 are respectively communicated at the top and the bottom of the first filter 6, and the first cleaning pipe 13 and the second cleaning pipe 14 respectively extend to the outer wall of the machine shell 1 and are blocked by a plug cover. After a long period of use, the filtering solution needs to be replaced in order to improve the purification effect, and the user can open the cap to release the filtering solution in the first filter 6 and then introduce a new filtering solution. The first filter 6 may be cleaned by introducing water through the first cleaning pipe 13 to remove the sediment in the first filter 6, and the cleaning wastewater may be discharged from the second cleaning pipe 14.

As shown in fig. 1 and 2, a threaded flange 4 is formed on the housing 1 at the air inlet 22, and the mounting cover 3 is connected to the threaded flange 4 in a threaded manner; the flow equalizing plate 31 (which is composed of a plurality of parallel guide vanes arranged at intervals and commonly used in the housing at the air inlet and outlet of an air conditioner indoor and outdoor unit, a fan, a range hood, a blower 21 and the like) is arranged on the mounting housing 3, so that the flow equalizing plate can play a role in guiding flow, and air in a room can be more fully sucked. The dust screen 32 is detachably arranged on one surface of the mounting cover shell 3 in the air suction chamber 2, and the dust screen 32 can prevent dust from entering the purifying chamber 5 to pollute filtering media such as filtering solution, active carbon and the like. When the dust screen is used for a long time, the dust screen can be taken down from the machine shell 1 by rotating the mounting cover 3, and then the dust screen 32 is cleaned. The threaded flange 4 is preferably provided as an internal thread and the mounting housing 3 as an external thread, so that the outer edge of the threaded flange 4 is prevented from damaging the dust screen 32 during mounting.

As shown in fig. 1 and 2, in the embodiment, the casing 1 is vertically disposed, the air suction chamber 2 is disposed at the top of the clean room 5, and the air inlet 22 is disposed at the top end of the casing 1. The first filter 6 and the second filter 7 are arranged side by side in the clean room 5, and the exhaust outlet 11 is arranged on the side wall of the machine shell 1. Such inside is arranged and can be made this purifier structure compacter to reduce the volume, thereby be convenient for the transport removal. In actual production process, first filter 6 can set up a plurality ofly and according to the radioactive medium difference in the environment and install different filtration solution respectively additional, and 6 matrixes of a plurality of first filters set up and form multistage purification through the pipeline is established ties in proper order.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A radioactive gas purification device comprises a machine shell (1), and is characterized in that an air suction chamber (2) and a purification chamber (5) communicated with the air suction chamber (2) are arranged in the machine shell (1); an air inlet (22) communicated with the air suction chamber (2) is formed in the shell (1), a fan (21) is further arranged in the air suction chamber (2), and air is sucked into the air suction chamber (2) through the air inlet (22) by the fan (21);

one end of the air suction chamber (2) close to the purification chamber (5) is communicated with a first vent pipe (23), and the first vent pipe (23) extends into the purification chamber (5); a first filter (6) and a second filter (7) are arranged in the purification chamber (5), and a filtering solution is arranged in the first filter (6); the first breather pipe (23) is communicated with the bottom of the first filter (6), and one end of the first breather pipe (23) at the bottom of the first filter (6) is also communicated with a shower type air nozzle (17);

the top end of the first filter (6) is also communicated with a second vent pipe (9), and one end, far away from the first filter (6), of the second vent pipe (9) is communicated with the bottom end of the second filter (7); be provided with activated carbon adsorption layer (71) and iodine adsorption layer (72) in second filter (7), the top of second filter (7) still communicates third air pipe (10), still be provided with air exit (11) on casing (1), third air pipe (10) are linked together with air exit (11).

2. Radioactive gas purification apparatus according to claim 1, wherein the cabinet (1) is arranged vertically, and the suction chamber (2) is located at the top of the purification chamber (5); air intake (22) set up on casing (1) top, first filter (6) and second filter (7) set up side by side in clean room (5), air exit (11) set up in casing (1) lateral wall.

3. The radioactive gas purification device according to claim 1, wherein the inhalation chamber (2) is tapered, and the air inlet (22) and the first vent pipe (23) are respectively communicated with two ends of the inhalation chamber (2); the first vent pipe (23) is communicated with one end with a smaller opening of the air suction chamber (2), the air inlet (22) is communicated with one end with a larger opening of the air suction chamber (2), and a flow equalizing plate (31) for guiding air is further arranged at the air inlet (22).

4. Radioactive gas purification apparatus according to claim 3, wherein a threaded flange (4) is provided on the housing (1) at the air inlet (22), the threaded flange (4) having a mounting enclosure (3) screwed thereon; the flow equalizing plate (31) is arranged on the mounting housing (3), and a dustproof net (32) is detachably connected to one surface of the mounting housing (3) positioned in the air suction chamber (2).

5. The radioactive gas purification apparatus according to claim 1, wherein a shower pipe (61) is further communicated with the bottom of the first filter (6), and a water suction pump (62) is disposed on the shower pipe (61); the spray pipe (61) is also communicated with the top part of the first filter (6), and one end of the spray pipe (61) at the top part of the first filter (6) is also communicated with an atomizing spray head (63).

6. The radioactive gas purification device according to claim 5, wherein a first cleaning pipe (13) is connected to the top of the first filter (6), and one end of the first cleaning pipe (13) far away from the first filter (6) extends to the outer wall of the cabinet (1); the bottom of the first filter (6) is also connected with a second cleaning pipe (14), and one end, far away from the first filter (6), of the second cleaning pipe (14) extends to the outer wall of the machine shell (1).

7. The radioactive gas purification apparatus according to claim 1, wherein a mounting chamber (15) for mounting the second filter (7) is provided in the purification chamber (5), and a second opening communicating with the mounting chamber (15) is further provided in the side wall of the cabinet (1), and an opening/closing door (16) is detachably connected to the second opening.

8. Radioactive gas purification device according to claim 7, wherein the second filter (7) is provided with vents at both the top and bottom ends, and the second vent pipe (9) and the third vent pipe (10) are detachably connected to both vents, respectively.

9. Radioactive gas purification apparatus according to claim 1, wherein a one-way valve (12) is further provided on an end of the first venting pipe (23) adjacent to the first filter (6).