CN113983608B - Air inlet and exhaust system of radioactive drug subpackaging hot chamber - Google Patents
Air inlet and exhaust system of radioactive drug subpackaging hot chamber Download PDFInfo
- Publication number
- CN113983608B CN113983608B CN202111121479.0A CN202111121479A CN113983608B CN 113983608 B CN113983608 B CN 113983608B CN 202111121479 A CN202111121479 A CN 202111121479A CN 113983608 B CN113983608 B CN 113983608B
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- pipe
- fixed shaft
- filter
- air
- hot chamber
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
- F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
- F24F7/08—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit with separate ducts for supplied and exhausted air with provisions for reversal of the input and output systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/28—Arrangement or mounting of filters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/003—Ventilation in combination with air cleaning
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
- F24F8/15—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means
- F24F8/158—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means using active carbon
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention relates to radioactive material processing equipment, in particular to a radioactive drug subpackaging hot chamber air inlet and exhaust system which comprises an air inlet pipe and an air exhaust pipe which are positioned at the top of a hot chamber, wherein the hot chamber comprises a box body and a liner arranged in the box body, the bottom of the air inlet pipe is communicated with the liner, the liner is provided with a vent, a vent pipe is arranged in the box body, the bottom end of the vent pipe is communicated with the vent, and the top end of the vent pipe penetrates through the bottom of the air exhaust pipe and is in sealing fit with the bottom of the air exhaust pipe; the air inlet pipe is connected with an air inlet fan, and a primary filter and a high-efficiency filter are arranged on the air inlet pipe; the exhaust pipe is provided with an exhaust fan and an active carbon filter; wherein, the top of ventilation pipe is equipped with centrifugal filter, and centrifugal filter is located in the exhaust pipe. The centrifugal filter is arranged in the exhaust pipe, and radioactive substances are further filtered through rotation of the centrifugal filter, so that emission of the radioactive substances is reduced.
Description
Technical Field
The invention relates to radioactive material processing equipment, in particular to a radioactive drug subpackaging hot chamber air inlet and exhaust system.
Background
The radiopharmaceutical subpackage hot chamber is widely applied to nuclear medicine departments, radiopharmaceutical production and research institutions in hospitals, and can help medical staff to keep away from radioactive sources in the process of drug subpackage, so that radiation is reduced.
The exhaust system is one of the components of the hot chamber, and exchanges the gas in the inner container of the hot chamber with the outside air to ensure the gas composition in the inner container and maintain a certain negative pressure.
However, when the gas is discharged outwards, the radioactive substances are discharged outwards, and the current filtering mode mainly uses the combination of filters with various grades to form filtering.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an air inlet and exhaust system of a radioactive drug subpackaging hot chamber, wherein a centrifugal filtration mode is added in the air exhaust system to better reduce the emission of radioactive substances.
In order to achieve the purpose, the invention provides the following technical scheme:
a radioactive drug subpackaging hot chamber air inlet and exhaust system comprises an air inlet pipe and an exhaust pipe which are positioned at the top of a hot chamber, wherein the hot chamber comprises a box body and an inner container arranged in the box body, the bottom of the air inlet pipe is communicated with the inner container, a vent hole is formed in the inner container, a vent pipe is arranged in the box body, the bottom end of the vent pipe is communicated with the vent hole, and the top end of the vent pipe penetrates through the bottom of the exhaust pipe and is in sealing fit with the bottom of the exhaust pipe;
the air inlet pipe is connected with an air inlet fan, and a primary filter and a high-efficiency filter are arranged on the air inlet pipe; the exhaust pipe is provided with an exhaust fan, and the exhaust pipe is provided with an active carbon filter;
wherein, the top of ventilation pipe is equipped with centrifugal filter, centrifugal filter is located in the exhaust pipe.
Preferably, the centrifugal filter comprises a fixed shaft penetrating through the top end of the ventilation pipe and a rotating shell rotatably arranged on the fixed shaft, and a filter cavity is formed between the rotating shell and the fixed shaft; the fixed shaft is provided with an airflow channel communicated with the air in the ventilation pipe, the airflow channel is communicated with the filter cavity, and the filter cavity is communicated with the air in the ventilation pipe.
Preferably, the fixed shaft is provided with a plurality of air outlet holes, the air outlet holes are communicated with the air flow channel, and the air outlet holes are communicated with the filter cavity.
Preferably, the bottom of the rotating shell is provided with a pair of nozzles, the pair of nozzles are communicated with the filter cavity, and the air flow sprayed by the pair of nozzles is symmetrical about the axis of the fixed shaft.
Preferably, an annular splash guard is arranged on the inner wall of the filter cavity, and the splash guard is obliquely and upwards arranged.
Preferably, the inner wall of the filter cavity is provided with a flow guide rib, the flow guide rib is spirally arranged, and the flow guide rib is positioned above the mud guard.
Preferably, the fixed shaft is sleeved with a bearing, and the top and the bottom of the rotating shell are both connected with the fixed shaft through the bearing.
Preferably, a pair of first sealing rings is arranged in the ventilation pipe in an up-down mode, and the bottom end of the fixing shaft penetrates through the pair of first sealing rings.
Preferably, the fixing shaft is further provided with an annular groove in the circumferential direction, and the first sealing ring is arranged in the annular groove.
Preferably, a second sealing ring is arranged between the ventilation pipe and the exhaust pipe.
Compared with the prior art, the invention has the advantages that:
(1) The centrifugal filter is arranged at the bottom end of the exhaust pipe, centrifugal filtration is formed through rotation of the centrifugal filter, radioactive substances are further filtered, and emission of the radioactive substances is reduced;
(2) According to the invention, the pair of nozzles are arranged at the bottom of the rotating shell, and a pair of reaction forces in opposite directions are formed by airflow passing through the nozzles, so that the centrifugal filter can rotate;
(3) Through the arrangement of the first sealing rings which are arranged side by side up and down, when the bottom end of the fixing shaft is arranged in the pair of first sealing rings in a penetrating mode, two-point stress is formed, and therefore the fixing shaft is convenient to fix.
Drawings
FIG. 1 is a schematic view of the entire air intake and exhaust system of the radiopharmaceutical dispensing hot chamber of the embodiment of the present invention;
FIG. 2 is a cross-sectional view of the connection between the exhaust duct and the ventilation duct according to the embodiment of the present invention.
In the figure: 1. a hot chamber; 2. a centrifugal filter; 11. a box body; 12. an inner container; 121. a vent; 13. an air inlet pipe; 131. an air intake fan; 132. a primary filter; 133. a high efficiency filter; 14. an exhaust duct; 141. an exhaust fan; 142. an activated carbon filter; 143. a second seal ring; 15. a vent pipe; 151. a first seal ring; 21. a fixed shaft; 211. a bearing; 212. an air flow channel; 213. an air outlet; 214. an annular groove; 22. rotating the shell; 221. a filter chamber; 222. a fender; 223. a flow guiding rib; 224. and (4) a 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 invention and are not to be construed as limiting the invention.
The invention discloses a radioactive drug subpackaging hot chamber air inlet and exhaust system, which comprises a hot chamber 1, wherein the hot chamber 1 comprises a box body 11 and an inner container 12 arranged in the box body 11, an air inlet pipe 13 and an air exhaust pipe 14 are arranged at the top of the box body 11, the air inlet pipe 13 and the air exhaust pipe 14 are arranged side by side, wherein the bottom of the air inlet pipe 13 extends into the box body 11 and is communicated with the inner container 12. A vent 121 is arranged at the bottom of the inner container 12, and the vent 121 is arranged at the bottom of the inner container 12. A vent pipe 15 is arranged between the vent 121 and the exhaust pipe 14, the bottom of the vent pipe 15 is connected with the vent 121, and the top of the vent pipe 15 is connected with the exhaust pipe 14.
The air inlet pipe 13 is further provided with an air inlet fan 131, the air inlet pipe 13 is further provided with a primary filter 132 and a high efficiency filter 133, the air inlet fan 131 introduces outside air into the inner container 12 through the air inlet pipe 13, and the air is filtered by the primary filter 132 and the high efficiency filter 133. The exhaust duct 14 is provided with an exhaust fan 141, the exhaust duct 14 is provided with an activated carbon filter 142, and the exhaust fan 141 exhausts the air in the inner container 12 through the exhaust duct 14 and is filtered by the activated carbon filter 142.
Referring to fig. 1 and 2, the top end of the ventilation pipe 15 is inserted into the bottom end of the exhaust pipe 14, the top end of the ventilation pipe 15 is provided with the centrifugal filter 2, and the centrifugal filter 2 is located in the exhaust pipe 14. The air discharged from the top end of the ventilation pipe 15 enters the exhaust pipe 14 after being centrifuged by the centrifugal filter 2. Specifically, the centrifugal filter 2 includes a fixed shaft 21 penetrating the top end of the ventilation pipe 15 and a rotating shell 22 rotatably disposed on the fixed shaft 21, the fixed shaft 21 is fixed, and the rotating shell 22 can rotate around the fixed shaft 21. The rotary shell 22 is hollow cylindrical, a filter chamber 221 is arranged in the rotary shell 22, a pair of nozzles 224 are arranged at the bottom of the rotary shell 22, wherein the fixed shaft 21 is arranged as a central shaft body, and air in the ventilation pipe 15 enters the filter chamber 221 through the hollow fixed shaft 21 and is then sprayed into the exhaust pipe 14 through the nozzles 224 at the bottom of the rotary shell 22.
Referring to fig. 1 and 2, the fixed shaft 21 is a stepped shaft, the fixed shaft 21 is provided with a pair of bearings 211, the pair of bearings 211 are distributed side by side up and down, and the upper and lower ends of the rotating shell 22 are respectively disposed on the fixed shaft 21 through the bearings 211. The middle of the fixed shaft 21 is provided with an air flow channel 212, the air flow channel 212 penetrates through the bottom of the fixed shaft 21 in the axial direction and is communicated with the ventilating pipe 15, and the air flow channel 212 does not penetrate through the top of the fixed shaft 21 in the axial direction. A plurality of air outlet holes 213 are formed in the circumferential outer wall of the fixed shaft 21, the plurality of air outlet holes 213 are all communicated with the air flow channel 212, the shape and size of the air outlet holes 213 are not fixed, and the air outlet holes 213 may be triangular, circular or elliptical, so as to facilitate the air flow. A plurality of air outlet holes 213 are formed in the filter chamber 221 to prevent air from directly entering the exhaust duct 14 without being filtered.
Referring to fig. 1 and 2, an annular splash guard 222 is disposed in the filter chamber 221, the splash guard 222 is disposed at a position near the bottom of the filter chamber 221, and the splash guard 222 does not abut against the stationary shaft 21, so that the air flow can flow downward from a gap between the splash guard 222 and the stationary shaft 21 and be ejected from the nozzle 224. Since the rotating housing 22 rotates around the fixed shaft 21, the gas discharged from the gas outlet hole 213 of the fixed shaft 21 is centrifuged by the rotation of the rotating housing 22, impurities with large mass are attached to the inner wall of the filter chamber 221, and the filtered air is discharged through the nozzle 224. To facilitate the collection of impurities, the mud guard 222 is disposed obliquely upward such that the impurities are collected at the groove between the mud guard 222 and the inner wall of the filter chamber 221. The inner wall of the filter cavity 221 is provided with a flow guiding rib 223, the flow guiding rib 223 is spirally arranged, and the bottom of the flow guiding rib 223 extends to the upper part of the mudguard 222, so that impurities can be accumulated at the groove along the flow guiding rib 223.
Referring to fig. 1 and 2, the pair of nozzles 224 are symmetrically disposed about the fixed shaft 21, the direction of the nozzles 224 is horizontal, and the air flows ejected from the pair of nozzles 224 are in the horizontal plane and in opposite directions, so that a pair of forces in opposite directions are generated about the fixed shaft 21 and the air flows are rotated by the reaction force of the ejected air flows. The more the air flow is ejected per unit time, the larger the reaction force is, the higher the rotation speed of the rotary case 22 is, and the better the filtering effect is.
Referring to fig. 1 and 2, a pair of grooves is formed in the inner wall of the top of the ventilation pipe 15, a first sealing ring 151 is disposed in each groove, the pair of first sealing rings 151 are disposed at intervals up and down, a pair of annular grooves 214 corresponding to the first sealing rings 151 are further disposed on the outer wall of the fixing shaft 21, and when the fixing shaft 21 is inserted into the top of the ventilation pipe 15, each first sealing ring 151 is disposed in the corresponding annular groove 214.
Referring to fig. 1 and 2, a groove is formed on the inner wall of the bottom of the exhaust duct 14, a second sealing ring 143 is arranged in the groove, and the top of the ventilation pipe 15 is arranged in the second sealing ring 143 in a penetrating manner, so as to reduce the air leakage.
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 (7)
1. The utility model provides a radiopharmaceutical partial shipment hot chamber advances exhaust system, is including air-supply line (13) and exhaust pipe (14) that are located hot chamber (1) top, and hot chamber (1) is including box (11) and inner bag (12) of setting in box (11), its characterized in that: the bottom of the air inlet pipe (13) is communicated with the inner container (12), a vent hole (121) is formed in the inner container (12), a vent pipe (15) is arranged in the box body (11), the bottom end of the vent pipe (15) is communicated with the vent hole (121), and the top end of the vent pipe (15) penetrates through the bottom of the exhaust pipe (14) and is in sealing fit with the bottom of the exhaust pipe (14);
an air inlet fan (131) is connected to the air inlet pipe (13), and a primary filter (132) and a high-efficiency filter (133) are arranged on the air inlet pipe (13); an exhaust fan (141) is arranged on the exhaust pipe (14), and an active carbon filter (142) is arranged on the exhaust pipe (14);
wherein, the top end of the ventilation pipe (15) is provided with a centrifugal filter (2), and the centrifugal filter (2) is positioned in the exhaust pipe (14);
the centrifugal filter (2) comprises a fixed shaft (21) arranged at the top end of the ventilation pipe (15) in a penetrating way and a rotating shell (22) arranged on the fixed shaft (21) in a rotating way, and a filtering cavity (221) is formed between the rotating shell (22) and the fixed shaft (21); an air flow channel (212) communicated with the air in the ventilation pipe (15) is arranged on the fixed shaft (21), the air flow channel (212) is communicated with the filter cavity (221), and the filter cavity (221) is communicated with the air in the exhaust pipe (14);
a pair of nozzles (224) are arranged at the bottom of the rotating shell (22), the pair of nozzles (224) are communicated with the filter cavity (221), and airflow sprayed by the pair of nozzles (224) is symmetrical about the axis of the fixed shaft (21);
an annular splash guard (222) is arranged on the inner wall of the filter cavity (221), and the splash guard (222) is obliquely and upwards arranged to collect impurities; the mudguard (222) does not abut against the fixed shaft (21), so that the airflow can flow downwards from the gap between the mudguard (222) and the fixed shaft (21).
2. The radiopharmaceutical dispensing hot chamber inlet and exhaust system of claim 1, wherein: the fixed shaft (21) is provided with a plurality of air outlet holes (213), the air outlet holes (213) are communicated with the air flow channel (212), and the air outlet holes (213) are communicated with the filter cavity (221).
3. The radiopharmaceutical dispensing hot chamber inlet and exhaust system of claim 1, wherein: be equipped with water conservancy diversion muscle (223) on the inner wall of filter chamber (221), water conservancy diversion muscle (223) spiral setting, water conservancy diversion muscle (223) are located the top of fender (222).
4. The radiopharmaceutical dispensing hot chamber inlet and exhaust system of claim 1, wherein: the bearing (211) is sleeved on the fixed shaft (21), and the top and the bottom of the rotating shell (22) are connected with the fixed shaft (21) through the bearing (211).
5. The radiopharmaceutical dispensing hot chamber inlet and exhaust system of claim 1, wherein: a pair of first sealing rings (151) is vertically arranged in the ventilation pipe (15), and the bottom end of the fixed shaft (21) penetrates through the pair of first sealing rings (151).
6. The radiopharmaceutical dispensing hot chamber inlet and exhaust system of claim 5, wherein: an annular groove (214) is further formed in the circumferential direction of the fixed shaft (21), and the first sealing ring (151) is arranged in the annular groove (214).
7. The radiopharmaceutical dispensing hot chamber inlet and exhaust system of claim 1, wherein: and a second sealing ring (143) is arranged between the ventilation pipe (15) and the exhaust pipe (14).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111121479.0A CN113983608B (en) | 2021-09-24 | 2021-09-24 | Air inlet and exhaust system of radioactive drug subpackaging hot chamber |
| PCT/CN2022/109721 WO2023045570A1 (en) | 2021-09-24 | 2022-08-02 | Air intake and exhaust system for radiopharmaceutical packaging hot cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111121479.0A CN113983608B (en) | 2021-09-24 | 2021-09-24 | Air inlet and exhaust system of radioactive drug subpackaging hot chamber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113983608A CN113983608A (en) | 2022-01-28 |
| CN113983608B true CN113983608B (en) | 2022-10-11 |
Family
ID=79736558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111121479.0A Active CN113983608B (en) | 2021-09-24 | 2021-09-24 | Air inlet and exhaust system of radioactive drug subpackaging hot chamber |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN113983608B (en) |
| WO (1) | WO2023045570A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113983608B (en) * | 2021-09-24 | 2022-10-11 | 江苏超敏科技有限公司 | Air inlet and exhaust system of radioactive drug subpackaging hot chamber |
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2021
- 2021-09-24 CN CN202111121479.0A patent/CN113983608B/en active Active
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2022
- 2022-08-02 WO PCT/CN2022/109721 patent/WO2023045570A1/en unknown
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|---|---|---|---|---|
| DE3912547A1 (en) * | 1989-04-17 | 1990-10-18 | Hugo Schmitz | Rotating gas filter drum - prevents dusty gas escaping into clean gas space by downwardly directed diverted flow |
| JP2005125245A (en) * | 2003-10-24 | 2005-05-19 | Mitsubishi Kakoki Kaisha Ltd | Centrifugal filter |
| CN202015519U (en) * | 2011-01-18 | 2011-10-26 | 青岛汇森能源设备有限公司 | Gas-liquid separator |
| CN103641284A (en) * | 2013-11-29 | 2014-03-19 | 东北大学 | Sludge breaking and centrifugal filtration integrated machine |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2023045570A1 (en) | 2023-03-30 |
| CN113983608A (en) | 2022-01-28 |
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