CN107715929A - A kind of Biohazard Safety Equipment of security seal - Google Patents

Abstract

The invention belongs to biological plant field, a kind of more particularly to Biohazard Safety Equipment of security seal, the Biohazard Safety Equipment of the security seal is provided with gathering hole in cabinet wall, the Biohazard Safety Equipment of the security seal also includes filter and blower fan, and the filtering area formed with the workspace that can be operated in it in the Biohazard Safety Equipment of the security seal and in malleation, gas outside the Biohazard Safety Equipment of the security seal is via gathering hole, the air inlet of blower fan is sucked into by air channel, gas in filtering area is provided by the air outlet of blower fan, and it is discharged to after filtration outside filtering area, air channel in negative pressure is internally formed by the double-deck utricule in the Biohazard Safety Equipment of security seal, so that the gas in air channel is isolated with cabinet wall, the malleation surrounded so as to negative pressure in filtering area.The Biohazard Safety Equipment of the security seal of the present invention has cost advantage, and sealing is more reliable, is easy to sterilize and changes.

Description

A kind of Biohazard Safety Equipment of security seal

Technical field

The invention belongs to biological plant field, more particularly to a kind of Biohazard Safety Equipment of security seal.

Background technology

The Biohazard Safety Equipment of security seal is that have infection for operation primary culture, bacterium strain and diagnostic sample etc. During the experiment material of property, for protecting operator, laboratory environment and experiment material, it is set to avoid exposure to above-mentioned behaviour Issuable infectious aerosol and spatters during work and design.When operating liquid or semifluid, such as shake, incline Note, stirring, by liquid be added drop-wise on the surface of solids or another liquid in when, be possible to produce aerosol.To agar Plate streak inoculation, with suction pipe inoculating cell blake bottle, using multiple tracks sample injector the suspension of infectious reagent is transferred to it is micro It is homogenized in culture plate, to infectious substance and vortex oscillation, infectious liquid is centrifuged and carries out animal operation When, all there may be infectious aerosol for these laboratory operations.Because naked eyes can not see that diameter is less than 5 microns of aerosol And a diameter of 5~100 microns of fine droplet, therefore laboratory worker has been normally unaware that this level of particle Generating, and may suck or the other materials of cross pollution work top.It has been shown that the biology of proper use of security seal Safety cabinet can effectively reduce the laboratory infection and culture cross pollution caused by aerosol exposes.Security seal Biohazard Safety Equipment simultaneously also can environmental protection.

For the Biohazard Safety Equipment of security seal, the sealing of cabinet is particularly important.One is consider to prevent by tying Structure gap is excessive to cause pathogen to be propagated.The second is consider to be designed to that available formaldehyde vapor sterilizes under conditions of not dismantling.Such as Have been mentioned, the hollow space between operating area inner side wall plate and external wallboard is negative pressure.Because cabinet inner space 1 is malleation , so if housing is damaged and leakage point is present, outside leakage will be produced.Therefore negative pressure is formed in side wall and backboard Protection can effectively reduce the possibility of leakage.

The Biohazard Safety Equipment for all security seals comprising double-decker being currently known all is that will be had time inside cabinet Between be all used as air channel, so as to cause gas positive pressure and negative pressure to be full of whole cabinet.And the use of the Biohazard Safety Equipment of security seal It is required that air channel is the structure of sealing, any leakage is not allow for, therefore the requirement to whole cabinet is whole sealings, any turning It is unacceptable with the leakage part of joint.In order to realize this requirement, typically used using the metal plate of high intensity as cabinet shell Any turning of silica gel sealing and joint, so as to produce the material of costliness and more production costs.

The content of the invention

In order to solve the above-mentioned technical problem, the invention provides a kind of Biohazard Safety Equipment of security seal, the security seal Biohazard Safety Equipment be provided with gathering hole in cabinet wall, the Biohazard Safety Equipment of the security seal also includes blower fan, and in the safety Formed with the workspace that can be operated in it and formed with filtering area in the Biohazard Safety Equipment of sealing, the security seal Gas outside Biohazard Safety Equipment is sucked into the air inlet of the blower fan via gathering hole, by air channel, wherein, the gas passes through this The air outlet of blower fan enters inside the filtering area, and to form malleation in the filtering area, the gas is filtered to be discharged to the filtering Outside area, the air channel is internally formed by the double-deck utricule in the Biohazard Safety Equipment of the security seal, to cause the air channel In negative-pressure gas isolate with cabinet wall, and the malleation for making the negative pressure surround in the filtering area.Particularly, filtering area is by this Double-deck utricule sealing.

In addition, above-mentioned filtering area is surrounded and formed by filter, the blower fan and the double-deck utricule, the gas in the filtering area Filtered by the filter.

Particularly, the filter includes first filter and the second filter, comes from the gas of the air outlet of the blower fan A part is discharged in the environment outside the Biohazard Safety Equipment of the security seal via first filter, and another part is via the second filtering Device is discharged in the workspace.

In addition, the Biohazard Safety Equipment of the security seal may also include intermediate bulkheads, the filtering area is located in the intermediate bulkheads Side, and the workspace is located at below the intermediate bulkheads.For example, first filter is located at the roof of the Biohazard Safety Equipment of security seal Inner side, the second filter are arranged in the intermediate bulkheads.

In addition, be provided with the lower clapboard for laying test material in the workspace, the lower clapboard and security seal The bottom wall of Biohazard Safety Equipment forms lower air duct, and the lower air duct is in fluid communication with the air channel formed by the bilayer vesicles body, because And it is also at negative pressure.

Another blower fan is also provided with the lower air duct, to strengthen the suction function in air channel.On the one hand, workspace Gas enter the lower air duct via the hole on the lower clapboard.On the other hand, outside the Biohazard Safety Equipment of security seal Surrounding air enter the lower air duct by the gathering hole and via the hole on the lower clapboard.

Preferably, directly bag arrives at the filter and the blower fan the double-deck utricule by way of banding.

Patent of the present invention mainly has the advantages that：

The design of patent of the present invention is whole to be formed using the whole air channels of double-deck utricule substitution tradition of such as flexible material Body air channel, so that the region full of negative pressure is concentrated among inside and outside two layers of this utricule inside safety cabinet, and full of malleation Region is concentrated in by among utricule and the other structures area encompassed such as HEPA filtering areas and blower fan.

On the one hand, due to the region that needs seal is grouped as utricule to high concentration from original whole cabinet, peace Full cabinet external shell no longer needs to provide sealing function, and is only to provide a frame structure, plays fixed envelope type entirety wind The effect in road, so as to significantly reduce the cost of cabinet material and sealing, therefore it is more economical.

On the other hand, there is this utricule structure to be easy to customize, and the number of plies is easy to increase, for customizing different structure and sealing The characteristic device curve of reliability.Simultaneously as contaminated region height is concentrated in this utricule air channel, therefore Polluted area disappears Poison, or even change and also become easier to.

Brief description of the drawings

Fig. 1 shows the structural representation of the Biohazard Safety Equipment of the security seal according to prior art comprising traditional air chute.

Fig. 2 shows the structure using utricule as the Biohazard Safety Equipment of the security seal of integral air duct according to patent of the present invention Schematic diagram.

Embodiment

The Biohazard Safety Equipment of the security seal of patent of the present invention includes cabinet 10, and the cabinet can be for example by such as steel or glass The hard materials such as glass are made, so as to meet the intensity requirement of framework support.For example, as shown in Figure 2, the cabinet 10 may include a left side Side wall, right side wall, antetheca, rear wall, roof and bottom wall, but not limited to this.It should be noted that any orientation occurred herein Word, as " on ", " under ", "left", "right", "front", "rear" are not restricted, function only as the work for illustrating structure and signal With.

Generally, gathering hole 20 is provided with one in above-mentioned each wall of cabinet, it is safe close to enable air to flow into In the Biohazard Safety Equipment of envelope, and experiment material is put into safety cabinet by the gathering hole 20 or takes out experiment material from safety cabinet Material.On the antetheca for the Biohazard Safety Equipment that the gathering hole 20 is preferably located at security seal, particularly below, therefore the gathering hole Also referred to as front window gathering hole.As needed, at least a portion of antetheca may be designed as can push-and-pull up and down door body, only to exist Gathering hole 20 is formed when needing, and closes the Biohazard Safety Equipment of the security seal when not needed.It is preferred that the antetheca of cabinet is certainly It is outward-dipping under above.

For example, the Biohazard Safety Equipment of the security seal may also include filter 30,40 and blower fan 50.These filters 30th, 40 may include the material that filters gas, particularly efficient air purifier（HEPA filtering areas）.Efficient air purifier 30, 40 are used to filter the gas for coming from blower fan 50.Generally, at least two mistakes are provided with the Biohazard Safety Equipment of security seal Filter, the danger such as caused aerosol in sample when on the one hand making the air in workspace reach defined cleanliness factor and will test Particulate filter falls the cross pollution so as to protection test material, on the other hand prevents the Biohazard Safety Equipment of security seal by air Dangerous particle be directly discharged in environment.In other words, set filter is all to ensure outer row and internal down current By the clean gas flow of filtering.

Different from the prior art described in background technology, the Biohazard Safety Equipment of the security seal of patent of the present invention is double-deck Utricule particularly substitutes traditional cabinet inner-tube structure on the whole, so that the cabinet of safety cabinet no longer needs to provide sealing work( Energy.Specifically, the filtering area 1 in malleation is provided with the Biohazard Safety Equipment of security seal.Particularly, the filtering area 1 can To be formed by filter 30,40, blower fan 50 and a part of of double-deck utricule 60.As shown in Figure 2, in some cases, should Filtering area 1 is surrounded by a part for two filters, a blower fan 50 and double-deck utricule and formed.As an example, use flexible pocket A part for body, it is, for example, internal layer（For external environment condition）, by the air outlet of each filter 30,40 and blower fan 50 wrap up Get up, to cause the air in filtering area 1 to be provided by the air outlet of blower fan 50, and the air in filtering area is only capable of passing through filtering Device 30,40 is discharged to outside filtering area.

In addition, region between the internal layer 60A and outer layer 60B of the inside of double-deck utricule 60, i.e. utricule and blower fan 50 enter Air port is connected.Formed due to the draft effect of blower fan 50 and be internally formed negative pressure in utricule 60, negative pressure can be made to surround filtering area 1 Interior malleation.In the text, the air channel of the Biohazard Safety Equipment for being internally formed security seal of the utricule 60 in negative pressure.Therefore, may be used To meet the authentication requesting of the Biohazard Safety Equipment of security seal, i.e. barotropic field needs the characteristic surrounded by negative pressure region.This Sample, in the Biohazard Safety Equipment of security seal carry out test operation when, test material discharge the dangerous particle such as geogas aerosol by Suction function in the down current in workspace and operating space bottom, around not being diffused into or effusion cabinet outside before just by Be directly sucked in negative pressure air channel, the pure air after being filtered by high efficiency particulate air filter be either partially recycled in operating space or It is discharged to outside in environment.Seen from the above description, the air inlet of above-mentioned blower fan 50 be located at utricule 60 internal layer 60A and outer layer 60B it Between region in, and the air outlet of blower fan 50 is located in filtering area 1.

In particularly advantageous embodiment, the middle part in the short transverse of the cabinet is provided with intermediate bulkheads 70.The intermediate bulkheads 70 are preferably almost parallel with roof or bottom wall, and are connected in known manner with left side wall and right side wall. Particularly, at least one filter 30 may be provided on the roof of cabinet, and at least one filter 40 may be provided at intermediate bulkheads On 70, blower fan 50 or its air outlet are located at the top of intermediate bulkheads 70.Thus, in the area above intermediate bulkheads 70 of cabinet The filtering area 1 in malleation is formed in domain, workspace 5 is formed in the region below intermediate bulkheads 70 in cabinet.

By the first filter 30 at least one, e.g. in roof in filter, the air outlet from blower fan 50 Gas can be discharged to via the first filter outside the Biohazard Safety Equipment of security seal.Equally, by filter At least another, be, for example, the second filter 40 in the intermediate bulkheads 70, the gas of the air outlet from blower fan 50 can be with It is discharged to via second filter in the workspace 5 of the Biohazard Safety Equipment of security seal.Life of the workspace 5 in security seal In thing safety cabinet outside filtering area 1.In addition, the minimum or average value of the air velocity entered by gathering hole 20 meet safety The authentication requesting of the Biohazard Safety Equipment of sealing.

In some preferable embodiments, opened in intermediate bulkheads 70 with sidewall spacers, double-deck utricule is located at filtering Part outside area 1 can extend in the lower zone of intermediate bulkheads.For example, as shown in the cross-section in figure 2, air channel 3 and shape Air channel 2,4 inside into the utricule 60 of filtering area, i.e. between the internal layer 60A and outer layer 60B of utricule be spatially communicate, i.e. It is to be in fluid communication, thus, whole air channel is in negative pressure.

In addition, workspace 5 and gathering hole 20, the i.e. cabinet ft connection of cabinet, operator can pass through experiment material behaviour Make mouth 20 and be put into the workspace to be operated.The lower clapboard 80 being spaced apart with the bottom wall of cabinet can be provided with workspace, should Lower clapboard is used as the operating platform of safety cabinet, can place the experiment material for needing to operate.Particularly, the lower clapboard 80 and bottom wall The lower air duct of the Biohazard Safety Equipment of security seal is formed together.For example, at least one supply can be provided with the lower clapboard 80 Mouthfuls 82,84 so that gas outside cabinet and from filtering area 1 be recycled to gas in workspace 5 via this at least one Individual air supply opening 82,84 or say the lower air duct flow into inside double-deck utricule 60, the internal layer 60A of i.e. double-deck utricule and outer layer 60B it Between, can be aspirated by blower fan 50.

In addition, as shown in Figure 2, blower fan 50 is arranged on cabinet top, so that its air outlet is located in filtering area, but may be used also Imagination also is provided with blower fan in the lower air duct of bottom of cabinet bulk（It is not shown）, to increase suction intensity, so as to be produced in utricule air channel Raw bigger underbalance effect.

It is preferred that as shown in Figure 2, the side dividing plate 90 that can be separated with operation interval is additionally provided with outside the main air duct 3, with Operation of the operator to experiment material is set not directly influence the air channel being made up of flexible utricule 60, so as to play the work blocked With.

Utricule in text generally relates to wrappage using double-decker, being preferably fabricated from a flexible material.The material of utricule Material includes but is not limited to be cloth, rubber, as long as meeting required sealing, and can bear certain pressure.In capsule At the part that body connects with blower fan or filter, elastomeric material can be used, so that it is between utricule and blower fan or mistake Between filter, so as to ensure the sealing of coupling part.But for example flexible direct banding of material can also be used.Preferably Ground, double-deck utricule can be directly wrapped onto such as filter 30,40 and/or blower fan 50 by way of banding, to realize installation With sealing.Those skilled in the art are also contemplated that the modes of other connection utricules, such as so that utricule relative to cabinet solid.

Being utricule as the implication in " monoblock type air channel " described in text, entirely substitutes conventional security to seal utricule Biohazard Safety Equipment in inner bag diaphragm structure, rather than partly substitute diaphragm structure.In other words, by the biology of security seal Region of the air channel of safety cabinet between inner bag dividing plate and cabinet wall be changed to inside the utricule completely, i.e. the internal layer of utricule and Region between outer layer, and the integral air duct substantially need not by the cabinet of the Biohazard Safety Equipment of security seal it is any every Plate and wall（In addition to the optional side dividing plate 90 for playing the effect of blocking）Formed.In other words, the Biohazard Safety Equipment of security seal Mainly only there is the air channel being internally formed by double-deck utricule.

Refer to the part between the internal layer of utricule and outer layer inside utricule described in text, the life without referring to security seal Relative to the part including utricule in thing safety cabinet.In addition, the internal layer of utricule and outer layer are also relative concept, for example, towards That layer in filtering area is referred to as internal layer, and that layer away from filtering area is referred to as outer layer.

Next, the biology using flexible utricule as the security seal of integral air duct is described by Fig. 2 dotted arrow The air flow path of safety cabinet.

In the Biohazard Safety Equipment of sealing safe to use, experiment material is put into workspace 5, then starts blower fan 50. By inside the double-deck utricule 60 that is connected with the air inlet of blower fan 50, gas in workspace 5 and/or enter from gathering hole 20 Enter the gas of safety cabinet, for example flowed into via at least one opening in lower clapboard inside double-deck utricule 60 downwards, and for example to Top is drawn into blower fan 50.Negative pressure is between the internal layer 60A and outer layer 60B of the inside of utricule 60, i.e. utricule.Then, wind The air of suction is sent into the filtering area 1 being for example arranged on above cabinet intermediate bulkheads by machine 50, and the pressure of filtering area 1 is more than work Make the pressure in area 5, and be in malleation, therefore, the malleation that the negative pressure in utricule is surrounded in filtering area 1.When pushing up as shown in Figure 2 When being provided with ventilative HEPA in wall and intermediate bulkheads 70, a part of gas in filtering area 1 passes through the filter on roof 30 enter in air, and another part flows into the work of cabinet bottom by the Posterior circle of filter 40 in intermediate bulkheads 70 Area.

Using technical solutions according to the invention, or those skilled in the art is under the inspiration of inventive technique scheme, if Similar technical scheme is counted out, and reaches above-mentioned technique effect, is to fall into protection scope of the present invention.

Claims (9)

1. a kind of Biohazard Safety Equipment of security seal, it is characterised in that the Biohazard Safety Equipment of the security seal is opened in cabinet wall There is gathering hole, the Biohazard Safety Equipment of the security seal also includes blower fan, and the shape in the Biohazard Safety Equipment of the security seal Into having workspace and a filtering area, operating personnel can in the workspace operating operation test material, the biology of the security seal Gas outside safety cabinet is sucked into the air inlet of the blower fan via the gathering hole, by air channel, and the gas passes through institute The air outlet for stating blower fan enters inside the filtering area, to form malleation, the filtered discharge of gas in the filtering area To outside the filtering area, the air channel by the double-deck utricule in the Biohazard Safety Equipment of the security seal inside shape Into, to cause the negative-pressure gas in the air channel to isolate with cabinet wall, and the malleation for making negative pressure surround in the filtering area.

2. the Biohazard Safety Equipment of security seal as claimed in claim 1, it is characterised in that the filtering area is by the bilayer Utricule is sealed, and the filtering area is formed by a part for filter, the blower fan and the double-deck utricule, in the filtering area The gas filtered by the filter.

3. the Biohazard Safety Equipment of the security seal as described in right wants 2, it is characterised in that the filter includes first filter With the second filter, the part for coming from the gas of the air outlet of the blower fan is discharged to the safety via the first filter In environment outside the Biohazard Safety Equipment of sealing, another part is discharged in the workspace via second filter.

4. the Biohazard Safety Equipment of security seal as claimed in claim 1, it is characterised in that also including intermediate bulkheads, the mistake Filter area is located above the intermediate bulkheads, and the workspace is located at below the intermediate bulkheads.

5. the Biohazard Safety Equipment of security seal as claimed in claim 3, it is characterised in that the first filter is positioned at safety On the inside of the roof of the Biohazard Safety Equipment of sealing, second filter is arranged in the intermediate bulkheads.

6. the Biohazard Safety Equipment of security seal as claimed in claim 1, it is characterised in that be provided with use in the workspace In the lower clapboard for laying test material, the bottom wall of the Biohazard Safety Equipment of the lower clapboard and security seal forms lower air duct, described Lower air duct is in fluid communication with the air channel formed by the bilayer vesicles body, thus is also at negative pressure.

7. the Biohazard Safety Equipment of security seal as claimed in claim 1, it is characterised in that be additionally provided with the lower air duct Another blower fan, to strengthen the suction function in air channel, the gas of the workspace is via described in the hole entrance on the lower clapboard Lower air duct.

8. the Biohazard Safety Equipment of security seal as claimed in claim 1, it is characterised in that positioned at the bio-safety of security seal Surrounding air outside cabinet enters the lower air duct by the gathering hole and via the hole on the lower clapboard.

9. the Biohazard Safety Equipment of security seal as claimed in claim 1, it is characterised in that the double-deck utricule passes through banding Mode is directly wrapped at the filter and the blower fan.