CN217313461U

CN217313461U - Biological safety cabinet with air tightness monitoring function

Info

Publication number: CN217313461U
Application number: CN202220169648.1U
Authority: CN
Inventors: 姚昆鹏
Original assignee: Qingdao Jiuwei Medical Innovation Research Institute Co ltd
Current assignee: Qingdao Jiuwei Medical Innovation Research Institute Co ltd
Priority date: 2022-01-21
Filing date: 2022-01-21
Publication date: 2022-08-30
Anticipated expiration: 2032-01-21

Abstract

The utility model relates to a biosafety cabinet field discloses a biosafety cabinet with gas tightness monitor function, the intelligent cabinet temperature adjusting device comprises a cabinet body, one side fixedly connected with hot blast blowpipe apparatus at the internal top of cabinet, the opposite side fixedly connected with exhaust device at the internal top of cabinet, exhaust device top middle part fixedly connected with exhaust pipe, the bottom of air-supply line and exhaust pipe is fixed connection respectively in the inside both sides of detection case, the middle part fixedly connected with gas concentration detector of detection case top inner wall. The utility model discloses in, it is internal to advance the cabinet with the nitrogen gas input to the cooperation air-supply line through nitrogen gas storage box, and in the detection case was got back to nitrogen gas again when the exhaust pipe was aired, the gas tightness of the real-time supervision cabinet body was detected to concentration through gas concentration detector, utilizes air inlet unit cooperation iodine steam can the quick judgement cabinet body where gas tightness goes wrong, has made things convenient for follow-up staff's maintenance work greatly.

Description

Biological safety cabinet with air tightness monitoring function

Technical Field

The utility model relates to a biological safety cabinet field especially relates to a biological safety cabinet with gas tightness monitoring function.

Background

The biological safety cabinet is a box type air purification negative pressure safety device capable of preventing aerosol dissipation caused by dangerous or unknown biological particles in the experimental operation treatment process, is widely applied to scientific research, teaching, clinical examination and production in the fields of microbiology, biomedicine, genetic engineering, biological products and the like, is the most basic safety protection equipment in a primary protection barrier in laboratory biological safety, and mainly has the working principle that air in the cabinet is sucked outwards to keep the interior of the cabinet in a negative pressure state, and workers are protected by vertical air flow.

Chinese patent document CN208912100U discloses a biosafety cabinet, which can connect the glass door of the operation window with the cabinet body more tightly by the cooperation of the baffle, the slide and the glass window, so that the biosafety cabinet has better air tightness, and is simple to operate and easy to popularize. But the device can't carry out real-time supervision to the gas tightness of the internal of cabinet, if the gas tightness of the cabinet body goes wrong, the staff need go on investigation one by one to the place that probably leaks, comparatively wastes time and energy, needs to improve.

Disclosure of Invention

The utility model aims at solving the defects existing in the prior art and providing a biosafety cabinet with an air tightness monitoring function.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a biosafety cabinet with gas tightness monitoring function, includes the cabinet body, one side fixedly connected with hot blast blowpipe apparatus at the internal top of cabinet, the opposite side fixedly connected with exhaust device at the internal top of cabinet, hot blast blowpipe apparatus top middle part fixedly connected with air-supply line, exhaust device top middle part fixedly connected with exhaust pipe, the bottom difference fixed connection of air-supply line and exhaust pipe is in the inside both sides of detection case, box is stored to detection case top middle part fixedly connected with nitrogen gas, the middle part fixedly connected with gas concentration detector of detection case top inner wall, air-supply line right-hand member downside is provided with first opening, the left end downside of exhaust pipe is provided with the second opening.

As a further description of the above technical solution:

the cabinet body bottom fixedly connected with support, the equal fixedly connected with universal wheel in support bottom four corners.

As a further description of the above technical solution:

the air inlet pipe is characterized in that a first gas separation membrane is fixedly connected to the inner top of the air inlet pipe, and a second gas separation membrane is fixedly connected to the inner top of the exhaust pipe.

As a further description of the above technical solution:

the right side department fixedly connected with gate valve that detection incasement portion one side is close to first opening.

As a further description of the above technical solution:

the outer diameter of the top of the air inlet pipe is fixedly connected with a three-way valve, and the left end of the three-way valve is fixedly connected with one end of the conveying pipe.

As a further description of the above technical solution:

the other end of the conveying pipe is fixedly connected to the middle of the top end of the iodine steam storage box, and the right end of the iodine steam storage box is fixedly connected to the top of the left end of the cabinet body.

As a further description of the above technical solution:

the middle part of the front end of the detection box is fixedly connected with a control display screen.

As a further description of the above technical solution:

and sealing rubber strips are fixedly connected at the joints of the inner walls of the cabinet body.

The utility model discloses following beneficial effect has:

1. the utility model discloses in, through hot blast blowpipe cooperation air-supply line to the internal air inlet of cabinet, nitrogen gas in the air can be got rid of to first gas separation membrane, then store box release nitrogen gas in to the detection case through nitrogen gas, nitrogen gas gets into the cabinet through first opening along the air-supply line internal, then it airs exhaust by exhaust device cooperation exhaust pipe, second gas separation membrane can block nitrogen gas and get back to the detection case again through the second opening in, the circulation is repeated, through the concentration of gas concentration detector detection nitrogen gas, and observe through the control display screen, if the concentration variation degree of finding nitrogen gas is great, then explain nitrogen gas in the external air has been sneaked into in the circulation process, the gas tightness problem appears in the surface cabinet body, reach real-time supervision's purpose, moreover, the steam generator is simple in structure, monitoring effect is excellent, the safety in utilization of biosafety cabinet is improved.

2. The utility model discloses in, when discovering the internal gas tightness of cabinet and going wrong, close gate valve and exhaust device, change the direction of three-way valve, it is internal to make air inlet unit pass through the conveyer pipe and carry the iodine steam in storing the box with iodine steam and get into the cabinet, it is internal at whole cabinet to make it fill, because iodine steam is purple, through observing which place of the purple iodine steam follow cabinet body spill, can judge where gas tightness of the cabinet body goes wrong, follow-up staff's maintenance work has been made things convenient for greatly, better user demand who has satisfied the biological safety cabinet.

Drawings

Fig. 1 is a schematic perspective view of a biosafety cabinet with an air-tightness monitoring function according to the present invention;

fig. 2 is the utility model provides an inside schematic diagram of the cabinet body in the biosafety cabinet with gas tightness monitoring function.

Illustration of the drawings:

1. a cabinet body; 2. a support; 3. a universal wheel; 4. an air intake device; 5. an air exhaust device; 6. an air inlet pipe; 7. an exhaust duct; 8. a detection box; 9. a nitrogen storage box; 10. a gas concentration detector; 11. a first gas separation membrane; 12. a second gas separation membrane; 13. a first opening; 14. a second opening; 15. a gate valve; 16. a three-way valve; 17. a delivery pipe; 18. an iodine vapor storage case; 19. controlling a display screen; 20. and sealing rubber strips.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-2, the present invention provides an embodiment: a biosafety cabinet with an air tightness monitoring function comprises a cabinet body 1, wherein one side of the top in the cabinet body 1 is fixedly connected with an air inlet device 4 and is responsible for air inlet of the cabinet body 1, the other side of the top in the cabinet body 1 is fixedly connected with an air exhaust device 5 and is responsible for air exhaust of the cabinet body 1, the middle part of the top end of the air inlet device 4 is fixedly connected with an air inlet pipe 6, the middle part of the top end of the air exhaust device 5 is fixedly connected with an air exhaust pipe 7, the bottoms of the air inlet pipe 6 and the air exhaust pipe 7 are respectively and fixedly connected with two sides of the inner part of a detection box 8, the middle part of the top end of the detection box 8 is fixedly connected with a nitrogen storage box 9 which contains nitrogen and can be discharged into the detection box 8, the middle part of the inner wall of the top end of the detection box 8 is fixedly connected with a gas concentration detector 10 and is used for detecting the concentration of the nitrogen, a first opening 13 is arranged on the lower side of the air inlet pipe 6, and when air is fed, the nitrogen enters the cabinet body 1 through the first opening 13, the lower side of the left end of the exhaust pipe 7 is provided with a second opening 14, and nitrogen returns to the detection box 8 through the second opening 14 during exhaust.

The bottom end of the cabinet body 1 is fixedly connected with a support 2, four corners at the bottom end of the support 2 are fixedly connected with universal wheels 3, the movement of the device is convenient, the inner top of the air inlet pipe 6 is fixedly connected with a first gas separation membrane 11, the first gas separation membrane 11 prevents nitrogen in the air from being brought into the cabinet body 1 when air is introduced, the inner top of the exhaust pipe 7 is fixedly connected with a second gas separation membrane 12, the second gas separation membrane 12 prevents the nitrogen in the cabinet body 1 from being discharged into external air, the two gas separation membranes can separate the nitrogen in the air, a gate valve 15 is fixedly connected at one side of the inside of the detection box 8 close to the right side of the first opening 13, the control switch is used, the outer diameter of the top of the air inlet pipe 6 is fixedly connected with a three-way valve 16, the left end of the three-way valve 16 is fixedly connected at one end of a conveying pipe 17, the other end of the conveying pipe 17 is fixedly connected at the middle part of the top end of an iodine steam storage box 18, box 18 right-hand member fixed connection is stored to iodine steam at the left end top of the cabinet body 1, and inside iodine steam that still has purple, 8 front end middle part fixedly connected with control display screens 19 of detection case conveniently watch, and the equal fixedly connected with joint strip 20 of cabinet body 1 inner wall handing-over department increases the sealed effect of the cabinet body 1.

The working principle is as follows: air is supplied into the cabinet body 1 through the air inlet device 4 in cooperation with the air inlet pipe 6, nitrogen in the air is removed by the first gas separation membrane 11, then the nitrogen is released into the detection box 8 through the nitrogen storage box 9, the nitrogen enters the cabinet body 1 along the air inlet pipe 6 through the first opening 13, then the air is exhausted through the exhaust device 5 in cooperation with the exhaust pipe 7, the nitrogen is blocked by the second gas separation membrane 12 and returns to the detection box 8 again through the second opening 14, the circulation is repeated, the concentration of the nitrogen is detected through the gas concentration detector 10, and the observation is carried out through the control display screen 19, if the concentration change degree of the nitrogen is found to be large, the nitrogen mixed into the outside air in the circulation process is shown, the surface cabinet body 1 has the air tightness problem, the purpose of real-time monitoring is achieved, at the moment, the gate valve 15 and the exhaust device 5 are closed, the direction of the three-way valve 16 is changed, so that the air inlet device 4 conveys iodine steam in the iodine steam storage box 18 into the cabinet body 1 through the conveying pipe 17, make it fill in whole cabinet body 1, because iodine steam is purple, spill from which place of cabinet body 1 through observing purple iodine steam, can judge that the problem appears in the place gas tightness of cabinet body 1, carry out the pertinence afterwards and overhaul can.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions on some technical features, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of the present invention.

Claims

1. A biosafety cabinet with air tightness monitoring function comprises a cabinet body (1), and is characterized in that: one side fixedly connected with air inlet unit (4) at top in the cabinet body (1), opposite side fixedly connected with exhaust device (5) at top in the cabinet body (1), air inlet unit (4) top middle part fixedly connected with air-supply line (6), exhaust device (5) top middle part fixedly connected with exhaust pipe (7), the bottom difference fixed connection of air-supply line (6) and exhaust pipe (7) is in the inside both sides of detection case (8), detection case (8) top middle part fixedly connected with nitrogen gas storage box (9), the middle part fixedly connected with gas concentration detector (10) of detection case (8) top inner wall, air-supply line (6) right-hand member downside is provided with first opening (13), the left end downside of exhaust pipe (7) is provided with second opening (14).

2. The biosafety cabinet with airtightness monitoring function according to claim 1, wherein: the cabinet body (1) bottom fixedly connected with support (2), the equal fixedly connected with universal wheel (3) in support (2) bottom four corners.

3. The biosafety cabinet with airtightness monitoring function according to claim 1, wherein: the air inlet pipe is characterized in that a first gas separation membrane (11) is fixedly connected to the inner top of the air inlet pipe (6), and a second gas separation membrane (12) is fixedly connected to the inner top of the exhaust pipe (7).

4. The biosafety cabinet with airtightness monitoring function according to claim 1, wherein: and a gate valve (15) is fixedly connected to one side in the detection box (8) close to the right side of the first opening (13).

5. The biosafety cabinet with airtightness monitoring function according to claim 1, wherein: the air inlet pipe (6) top external diameter fixedly connected with three-way valve (16), three-way valve (16) left end fixed connection is in conveyer pipe (17) one end.

6. The biosafety cabinet with airtightness monitoring function according to claim 5, wherein: the other end of the conveying pipe (17) is fixedly connected to the middle of the top end of the iodine steam storage box (18), and the right end of the iodine steam storage box (18) is fixedly connected to the top of the left end of the cabinet body (1).

7. The biosafety cabinet with airtightness monitoring function according to claim 1, wherein: the middle part of the front end of the detection box (8) is fixedly connected with a control display screen (19).

8. The biosafety cabinet with airtightness monitoring function according to claim 1, wherein: the cabinet body (1) inner wall handing-over department all fixedly connected with joint strip (20).