CN214261918U

CN214261918U - Biological safety cabinet

Info

Publication number: CN214261918U
Application number: CN202022192736.7U
Authority: CN
Inventors: 李海玲
Original assignee: 45 Technology Beijing Co ltd
Current assignee: 45 Technology Beijing Co ltd
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2021-09-24
Anticipated expiration: 2030-09-29

Abstract

The application discloses biological safety cabinet, relate to biological safety cabinet's technical field, it includes the cabinet body, the cabinet body is including operation chamber and circulation return air chamber, offer the ventilation portion that is used for operating chamber and circulation return air chamber intercommunication on the lateral wall in operation chamber, circulation return air chamber top sets firmly and is used for making the air circulate back air chamber and operation chamber endless fan via circulation return air chamber, circulation return air chamber top sets firmly and is used for carrying out filterable interior row high efficiency filter to the air that gets into the operation chamber, it has been used for killing the ultraviolet lamp of pathogenic microorganism to set firmly in the circulation return air chamber, set up the corresponding access hole in position with ultraviolet lamp on the cabinet body, access hole department is provided with and is used for its access door that seals tightly, one side that interior row high efficiency filter is located the operation chamber is provided with the active carbon adsorption plate. The application improves the effect of eliminating pathogenic microorganisms.

Description

Biological safety cabinet

Technical Field

The application relates to the technical field of biological safety cabinets, in particular to a biological safety cabinet.

Background

The biological safety cabinet is a box-shaped air purification safety device which can prevent aerosol from dissipating when some dangerous or unknown biological particles are contained in the experimental operation treatment process. The protective screen is widely applied to scientific research, teaching, clinical examination and production in the fields of microbiology, biomedicine, genetic engineering, biological products and the like, and is the most basic safety protective equipment in the primary protective screen in the biological safety of laboratories.

The biological safety cabinet is widely applied to the microbial operation process, and in the use process of the biological safety cabinet, the ultraviolet lamp is usually additionally arranged in the safety cabinet to kill pathogenic microorganisms generated in the operation process. However, the "new diagnostic protocol for coronavirus pneumonia" is explicitly pointed out from the first edition: the novel coronavirus was sensitive to ultraviolet light and all novel coronavirus detections were performed in a biosafety cabinet.

Because the novel coronavirus is sensitive to ultraviolet rays, the ultraviolet lamp must be turned off during the operation, but in this case, microorganisms generated during the operation can be adsorbed only by the filter at the top of the biological safety cabinet, and the elimination effect is poor.

SUMMERY OF THE UTILITY MODEL

In order to improve the elimination effect on pathogenic microorganisms, the application provides a biological safety cabinet.

The application provides a biological safety cabinet adopts following technical scheme:

the utility model provides a biosafety cabinet, includes the cabinet body, the cabinet body is including operation chamber and circulation return air chamber, offer the ventilation portion that is used for operating chamber and circulation return air chamber intercommunication on the lateral wall in operation chamber, circulation return air chamber top sets firmly and is used for making the air through circulation return air chamber and the endless fan in operation chamber, circulation return air chamber top sets firmly and is used for carrying out filterable interior high efficiency filter that arranges to the air that gets into the operation chamber, set firmly the ultraviolet lamp that is used for killing out pathogenic microorganism in the circulation return air chamber, set up the maintenance mouth corresponding with ultraviolet lamp's position on the cabinet body, maintenance mouth department is provided with and is used for its access door that seals tightly, one side that interior row high efficiency filter is located the operation chamber is provided with the active carbon adsorption board.

Through adopting above-mentioned technical scheme, operating personnel when operating in the operation chamber, the air flows to circulation return air chamber in via the portion of ventilating, and circulate in operation chamber and circulation return air chamber under the effect of air pump, when the air current was located through the ultraviolet lamp in circulation return air chamber, ultraviolet lamp exterminateed the pathogenic microorganism that produces in the operation process in mixing in the air, adsorb pathogenic microorganism via interior row high efficiency filter again, the elimination effect to pathogenic microorganism has been improved, and simultaneously, the ozone that active carbon adsorption plate produced ultraviolet lamp adsorbs, prevent that the ozone that the ultraviolet ray produced from causing the interference to the sample in the operation chamber.

Preferably, the activated carbon adsorption plate is connected to the inner row high-efficiency filter in a pressing mode through bolts.

Through adopting above-mentioned technical scheme, after the active carbon adsorption board used a period, the staff of being convenient for dismantled the change to the active carbon adsorption board, guaranteed the adsorption effect of active carbon adsorption board.

Preferably, one end of the access door is hinged to the inner side wall of the operation cavity, and the other end of the access door is connected to the inner side wall of the operation cavity in a pressing mode through a connecting piece.

Through adopting above-mentioned technical scheme, the adjustment connecting piece removes the one end of access door and operates being connected of intracavity lateral wall, can open the access door and overhaul ultraviolet lamp, simple structure, the operation of being convenient for.

Preferably, an elastic member for automatically lifting the access door is arranged between the inner side wall of the operation cavity and the access door.

Through adopting above-mentioned technical scheme, the setting of elastic component is convenient for the automation of access door to be lifted, and the operating personnel of being convenient for operates.

Preferably, the elastic member includes a torsion spring sleeved on a hinge shaft between the access door and the cabinet body.

By adopting the technical scheme, the automatic lifting of the access door is realized, and the installation is convenient.

Preferably, when the access door is in a lifting state, the access door can be connected to the inner side wall of the operation cavity through the connecting assembly.

Through adopting above-mentioned technical scheme, stability when increasing the access door and lifting up the state reduces the emergence that operating personnel touched the access door carelessly and made its condition of rocking.

Preferably, coupling assembling is including hanging the climbing buckle of locating on the operation intracavity lateral wall, the climbing buckle one end of operation intracavity lateral wall dorsad can be hung and is located the access door.

Through adopting above-mentioned technical scheme, when having realized that the access door lifts up the state, be connected between access door and the operation intracavity lateral wall.

Preferably, the access door is provided with an observation window.

Through adopting above-mentioned technical scheme, the staff of being convenient for observes ultraviolet lamp's the condition.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when an operator operates in the operation cavity, air flows into the circulating air return cavity through the ventilation part and circulates in the operation cavity and the circulating air return cavity under the action of the air pump, when air flows through the ultraviolet lamp in the circulating air return cavity, the ultraviolet lamp kills pathogenic microorganisms generated in the operation process mixed in the air, and then the pathogenic microorganisms are adsorbed through the internal-discharge efficient filter, so that the elimination effect of the pathogenic microorganisms is improved, and meanwhile, the ozone generated by the ultraviolet lamp is adsorbed by the activated carbon adsorption plate, so that the interference of the ozone generated by ultraviolet rays on samples in the operation cavity is prevented;

2. after the activated carbon adsorption plate is used for a period of time, workers can conveniently detach and replace the activated carbon adsorption plate, and the adsorption effect of the activated carbon adsorption plate is ensured;

3. the elastic piece is arranged, so that the access door can be automatically lifted, and an operator can operate the access door conveniently.

Drawings

Fig. 1 is a schematic view of the overall structure of the present application.

Fig. 2 is a schematic partial cross-sectional view showing the structure in the cabinet cavity in the present application.

Fig. 3 is a schematic partial cross-sectional view of the present application showing the direction of air flow in the cabinet.

Fig. 4 is a partial structural schematic view showing the structure of the connecting assembly in the present application.

Description of reference numerals: 1. a cabinet body; 11. a chassis; 12. a caster wheel; 13. a door body; 2. an operating chamber; 21. an access hole; 22. an access door; 221. an observation window; 222. a seal ring; 23. a butterfly bolt; 3. circulating back to the air cavity; 31. a bottom chamber; 32. a middle chamber; 33. a top chamber; 331. a fan; 332. an inner row high-efficiency filter; 333. an external discharge high-efficiency filter; 4. a ventilation portion; 41. a first ventilation zone; 42. a second venting zone; 5. an ultraviolet lamp; 6. a torsion spring; 7. a connecting assembly; 71. an upper hanging ring; 72. climbing buckles; 73. a lower lifting ring; 8. an activated carbon adsorption plate; 9. and (4) a fluorescent lamp.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a biological safety cabinet.

Referring to fig. 1, the cabinet comprises a cabinet body 1, wherein a bottom end of the cabinet body 1 is fixedly connected with a bottom frame 11, and a plurality of casters 12 with service brakes are fixedly connected to the bottom end of the bottom frame 11 for facilitating the movement of the cabinet body 1.

Combine fig. 1 and fig. 2, cabinet body 1 includes operation chamber 2 and circulation return air chamber 3, and operation chamber 2 sets up to the cavity of rectangle, and 2 front ends in operation chamber are seted up and are enabled staff's both hands to get into wherein the operation mouth of carrying out the operation, and it is connected with along vertical direction sliding on cabinet body 1 to be used for opening the operation mouth with the confined door body 13. The circulating air returning cavity 3 is wrapped at one side of the circulating air returning cavity 3 back to the operation opening and the upper end and the lower end of the operation cavity 2 in a C shape, and the operation cavity 2 comprises a bottom cavity 31, a middle cavity 32 and a top cavity 33 which are communicated with each other.

Offer on the lateral wall of operation chamber 2 and be used for operating ventilation portion 4 of chamber 2 and the intercommunication of circulation return air chamber 3, ventilation portion 4 is including offering in the first ventilation district 41 of 2 inner chamber diapalls of operation chamber near the one end of operation mouth and offering in the second ventilation district 42 of 2 inner chamber lateral walls bottom of operation chamber, first ventilation district 41 and second ventilation district 42 all include a plurality of ventilation holes, first ventilation district 41 will operate chamber 2 and bottom cavity 31 intercommunication, second ventilation district 42 will operate chamber 2 and middle part cavity 32 intercommunication.

Referring to fig. 2 and 3, a blower 331 is fixedly connected to a side wall of the top chamber 33, and the blower 331 is configured to circulate air through the circulation return air chamber 3 and the operation chamber 2. The upper end and the lower end of the top chamber 33 are respectively and fixedly connected with an outer-row efficient filter 333 and an inner-row efficient filter 332, a part of air in the top chamber 33 flows to the outer side of the biological safety cabinet through the outer-row efficient filter 333, and the other part of air flows into the operation cavity 2 through the inner-row efficient filter 332.

With reference to fig. 2 and 4, the ultraviolet lamp 5 is fixedly connected to the side wall of the middle chamber 32 of the circulating return air chamber 3 away from the operation chamber 2, the ultraviolet lamp 5 is used for killing pathogenic microorganisms mixed in the air generated in the operation process, and the ultraviolet lamp 5 is located above the second ventilating area 42.

Offer the access hole 21 that the staff of being convenient for overhauld ultraviolet lamp 5 on the inner wall of operation chamber 2, the position of access hole 21 is corresponding with ultraviolet lamp 5's position, and access hole 21 is the notch of rectangular shape that the level set up. An access door 22 capable of sealing the access opening 21 is arranged on the inner wall of the operation cavity 2, and an observation window 221 is fixedly connected to the access door 22. The top of access door 22 hinges on the inner wall of operation chamber 2 through the articulated shaft, and threaded connection has a plurality of butterfly bolt 23 that are used for compressing tightly access door 22 bottom on the inner wall of operation chamber 2.

In order to increase the sealing performance of the connection between the access door 22 and the inner wall of the operation cavity 2, a sealing ring 222 is fixedly connected to the outer edge of the side wall of the access door 22 facing the access opening 21, and the sealing ring 222 abuts against the inner wall of the operation cavity 2.

The articulated shaft outside cover is equipped with torsional spring 6, and torsional spring 6 can exert ascending effort to access door 22, unscrews butterfly bolt 23, and access door 22 upwards lifts in torsional spring 6's the automatic effort, and the staff of being convenient for operates.

Be provided with coupling assembling 7 between access door 22 and the inner wall of operation chamber 2, when access door 22 was in the state of lifting, coupling assembling 7 can be connected access door 22 on the inner wall of operation chamber 2. The connecting assembly 7 comprises an upper hanging ring 71 fixedly connected to the inner wall of the operation cavity 2, a climbing buckle 72 is hung on the upper hanging ring 71, and a lower hanging ring 73 corresponding to the upper hanging ring 71 is fixedly connected to the side wall of the access door 22, which faces away from the access opening 21. When the access door 22 is in the lifted state, one end of the climbing buckle 72, which is back to the upper hanging ring 71, is hung on the lower hanging ring 73, so that the stability of the access door 22 in the lifted state is improved, and the situation that an operator accidentally touches the access door 22 to shake the access door is reduced.

Referring to fig. 3, interior high efficiency filter 332 uses bolt compression joint to have active carbon adsorption plate 8 towards the one end of operation 2 rooms in chamber, the ozone that ultraviolet lamp 5 produced is adsorbed in the setting of active carbon adsorption plate 8, prevent that the ozone that the ultraviolet ray produced from causing the interference to the sample in operation 2, simultaneously, use bolt compression joint to arrange active carbon adsorption plate 8 on high efficiency filter 332 in after it uses a period, the staff of being convenient for dismantles the change to active carbon adsorption plate 8, guarantee active carbon adsorption plate 8's adsorption effect.

Referring to fig. 4, a fluorescent lamp 9 is fixedly connected to the inner wall of the operation chamber 2, which is provided with an access door 22, and the fluorescent lamp 9 is located above the access door 22.

The implementation principle of the biological safety cabinet in the embodiment of the application is as follows:

when the door body 13 is opened, and an operator operates in the operation cavity 2, the air pump is started, air flows into the circulating air return cavity 3 through the first ventilation part and the second ventilation part, and flows into the top chamber 33 of the circulating air return cavity 3 under the action of the air pump, a part of air in the top chamber 33 flows to the outside of the biosafety cabinet through the outer-row efficient filter 333, the other part of air flows into the operation cavity 2 through the inner-row efficient filter 332, when the air flows through the ultraviolet lamp 5 in the circulating air return cavity 3, the ultraviolet lamp 5 kills pathogenic microorganisms generated in the operation process of mixing in the air, and then the pathogenic microorganisms are adsorbed through the inner-row efficient filter 332 and the outer-row efficient filter 333, so that the elimination effect of the pathogenic microorganisms is improved, and meanwhile, the ozone generated by the ultraviolet lamp 5 is adsorbed by the activated carbon adsorption plate 8, the ozone generated by the ultraviolet rays is prevented from interfering with the sample in the operation chamber 2.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a biological safety cabinet, includes the cabinet body (1), the cabinet body (1) is including operation chamber (2) and circulation return air chamber (3), offer on the lateral wall in operation chamber (2) and be used for ventilating part (4) with operation chamber (2) and circulation return air chamber (3) intercommunication, circulation return air chamber (3) top sets firmly and is used for making the air through circulation return air chamber (3) and operation chamber (2) endless fan (331), circulation return air chamber (3) top sets firmly and is used for carrying out filterable interior high efficiency filter (332), its characterized in that to the air that gets into operation chamber (2) of arranging, the air conditioner comprises a cabinet body, the ventilation part (4) that circulates, return air chamber (2) and circulation return air chamber (3) intercommunication, circulation return air chamber (3) top sets firmly is used for making air through circulation return air chamber (3) and is used for making the interior row of air high efficiency filter (332), its characterized in that: set firmly ultraviolet lamp (5) that are used for killing out pathogenic microorganism in circulation return air chamber (3), set up on the cabinet body (1) and overhaul mouth (21) corresponding with ultraviolet lamp's (5) position, overhaul mouth (21) department is provided with and is used for access door (22) that seals it, one side that interior row high efficiency filter (332) are located operation chamber (2) is provided with activated carbon adsorption plate (8).

2. A biosafety cabinet according to claim 1, wherein: the activated carbon adsorption plate (8) is connected to the inner row high-efficiency filter (332) in a pressing mode through bolts.

3. A biosafety cabinet according to claim 1, wherein: one end of the access door (22) is hinged to the inner side wall of the operation cavity (2), and the other end of the access door (22) is tightly connected to the inner side wall of the operation cavity (2) through a connecting piece.

4. A biosafety cabinet according to claim 3, wherein: an elastic piece used for automatically lifting the access door (22) is arranged between the inner side wall of the operation cavity (2) and the access door (22).

5. A biosafety cabinet according to claim 4, wherein: the elastic element comprises a torsional spring (6) which is sleeved on a hinged shaft between the access door (22) and the cabinet body (1).

6. A biosafety cabinet according to claim 3, wherein: when access door (22) is in the state of lifting up, access door (22) can be connected on the inside wall of operation chamber (2) through coupling assembling (7).

7. A biosafety cabinet according to claim 6, wherein: coupling assembling (7) are including hanging climbing buckle (72) of locating on operation chamber (2) inside wall, climbing buckle (72) one end of operation chamber (2) inside wall dorsad can be hung and is located access door (22).

8. A biosafety cabinet according to claim 1, wherein: an observation window (221) is arranged on the access door (22).