CN209363244U - A kind of anti-backflow vent cabinet - Google Patents
A kind of anti-backflow vent cabinet Download PDFInfo
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- CN209363244U CN209363244U CN201920058537.1U CN201920058537U CN209363244U CN 209363244 U CN209363244 U CN 209363244U CN 201920058537 U CN201920058537 U CN 201920058537U CN 209363244 U CN209363244 U CN 209363244U
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Abstract
The utility model relates to a kind of anti-backflow vent cabinets comprising cabinet body, operating platform, air draft part and blower；Operating platform is set in cabinet body and the inner space of cabinet body is separated into the operating cavity being located above and underlying air draft chamber；Air draft part is located in operating cavity and is formed adapter cavity, and air draft part is equipped with the vent of connection operating cavity and adapter cavity, and the bottom of adapter cavity is connected to air draft chamber；The cavity wall of air draft chamber is equipped with air outlet, and air outlet is connect with blower.The anti-backflow vent cabinet is avoided that experimental gas is condensed into drop and flows backwards and is back in vent cabinet, it keeps the inner wall cleaning of wind cabinet all and the experimental facilities for being set to station will not be impacted, while avoiding acid solution from flowing back in vent cabinet and causing damages to the health of experimenter.
Description
Technical field
The utility model relates to laboratory ventilation equipment technical fields, and in particular to a kind of anti-backflow vent cabinet.
Background technique
In the prior art, the air outlet of vent cabinet be located at the deflector in the front of vent cabinet to rear cavity or directly to
When doing related experiment at the top of upper connection, the volatilization of sulfuric acid or hydrochloric acid, acid gas can condense upon inner wall before vent cabinet air draft with steam
Above, it may also condense upon on air draft tube wall, can be flowed backward to downwards on the station in vent cabinet along inner wall or tube wall after cohesion,
The Experimental Area for polluting station, causes to be difficult to clean up and clean up；It is not only dirty if what is flowed back is acid solution
Dye, also results in experimental facilities and corrosive pipeline, the health for even endangering experimental work personnel.
Therefore, how to make vent cabinet when in use, avoid experimental gas from being condensed into drop and flow backwards and be back in vent cabinet, protect
It holds the inner wall cleaning of wind cabinet all and the experimental facilities for being set to station will not be impacted, while it is logical to avoid acid solution from flowing back to
It causes damages in wind cabinet to the health of experimenter, is those skilled in the art's technical issues that need to address.
Utility model content
The purpose of the utility model is to provide a kind of anti-backflow vent cabinets, can be avoided experimental gas and are condensed into drop and fall
It flows back into vent cabinet, keep the inner wall cleaning of wind cabinet all and the experimental facilities for being set to station will not be impacted, together
When avoid acid solution from flowing back in vent cabinet causing damages to the health of experimenter.
In order to solve the above technical problems, the utility model provides a kind of anti-backflow vent cabinet comprising cabinet body, operation are flat
Platform, air draft part and blower；The operating platform is set in the cabinet body and the inner space of the cabinet body is separated into positioned at upper
The operating cavity and underlying air draft chamber of side；The air draft part is located in the operating cavity and forms adapter cavity, the air draft
Part is equipped with the vent for being connected to the operating cavity and the adapter cavity, and the bottom of the adapter cavity is connected to the air draft chamber；Institute
The cavity wall for stating air draft chamber is equipped with air outlet, and the air outlet is connect with the blower.
Air outlet is located at the lower section of operating cavity, i.e. the vent cabinet structure that is lower air draft, makes air draft by the effect of blower
Intracavitary pressure reduces, at this point, the pressure in the adapter cavity being connected to air draft chamber reduces, so that the gas edge in operating cavity
Vent enters in adapter cavity, is discharged subsequently into air draft chamber and from air outlet.The acid gas and steam to volatilize in experimentation
Into in adapter cavity, acid drop is even condensed into adapter cavity, which will also fall under gravity into
In air draft chamber, without generating situation about flowing back in operating cavity, air draft part and air draft chamber are cleared up in time.
The structure of the anti-backflow vent cabinet is simple, can effectively avoid experimental gas and is condensed into drop and flows back in operating cavity
Situation avoids making the inner wall of operating cavity dirty, keeps vent cabinet cleaning inside, and will not make to the experimental facilities for being set to operating platform
At influence.It can avoid experimental gas simultaneously and be condensed into drop and flow back in operating cavity 11 to cause damages to the health of experimenter.
Optionally, the top of the operating cavity is equipped with air inlet, the end sealing of the adapter cavity.
Optionally, the air draft hole density of air draft part lower part is less than the air draft hole density on air draft part top.
Optionally, the air draft part is the air draft plate in the operating cavity, the air draft plate and the operating cavity
Side wall is enclosed the adapter cavity.
Optionally, the air draft part is the air-exhausting duct in the operating cavity, and the cavity in the air-exhausting duct forms institute
State adapter cavity.
Optionally, filter device is additionally provided between the air outlet and the blower.
Optionally, the filter device includes waste gas absorption filler assembly.
Optionally, air duct is additionally provided between the blower and the air outlet, the air duct is fixedly arranged on the outer of the cabinet body
Side wall, the filter device are set in the air duct, and the air duct is equipped with exhaust valve.
Detailed description of the invention
Fig. 1 is structural schematic diagram when anti-backflow vent cabinet provided by the utility model embodiment is equipped with air draft plate；
Fig. 2 is the side view of Fig. 1；
Fig. 3 is structural schematic diagram when anti-backflow vent cabinet is equipped with air-exhausting duct；
Fig. 4 is the side view of Fig. 3.
In attached drawing 1-4, the reference numerals are as follows:
1- cabinet body, 11- operating cavity, 12- air draft chamber, 13- adapter cavity, 14- air inlet, 15- air outlet；2- operating platform,
21- through-hole；3- blower；41- air draft plate, 42- air-exhausting duct, 43- vent；5- cabinet door；6- filter device；The air duct 7-；8- air draft
Valve.
Specific embodiment
In order to make those skilled in the art more fully understand the technical solution of the utility model, with reference to the accompanying drawing and have
The utility model is described in further detail for body embodiment.
Fig. 1-4 is please referred to, Fig. 1 is knot when anti-backflow vent cabinet provided by the utility model embodiment is equipped with air draft plate
Structure schematic diagram；Fig. 2 is the side view of Fig. 1；Fig. 3 is structural schematic diagram when anti-backflow vent cabinet is equipped with air-exhausting duct；Fig. 4 is Fig. 3
Side view.
The utility model embodiment provides a kind of anti-backflow vent cabinet, and as shown in Figs 1-4, which includes
Cabinet body 1, operating platform 2, air draft part and blower 3；Wherein, operating platform 2 is set in cabinet body 1 and divides the inner space of cabinet body 1
It is divided into operating cavity 11 and air draft chamber 12, operating cavity 11 is located at the top of operating platform 2, and air draft chamber 12 is located under operating platform 2
Side.Air draft part is located in operating cavity 11 and is formed adapter cavity 13, and air draft part is equipped with the air draft of connection operating cavity 11 and adapter cavity 13
The bottom in hole 43, the adapter cavity 13 is connected to air draft chamber 12；The cavity wall of air draft chamber 12 is equipped with air outlet 15, air outlet 15 and blower
3 connections.
In the present embodiment, air outlet 15 is set to the side wall of air draft chamber 12, the air outlet 15 can also be set to air draft certainly
The bottom wall of chamber 12, is not particularly limited herein.
That is, air outlet 15 is located at the lower section of operating cavity 11 in the present embodiment, i.e., the anti-backflow vent cabinet is lower row
The structure of wind reduces the pressure in air draft chamber 12 by the effect of blower 3, at this point, the adapter cavity 13 being connected to air draft chamber 12
Interior pressure reduces, so that the gas in operating cavity 11 enters in adapter cavity 13 along vent 43, subsequently into air draft chamber
It is discharged in 12 and from air outlet 15.The acid gas and steam to volatilize in experimentation enters in adapter cavity 13, even in adapter cavity
Acid drop is condensed into 13, which will also fall under gravity into air draft chamber 12, without generating refluence
The situation in operating cavity 11 is returned, air draft part and air draft chamber 12 are cleared up in time.
The structure of the anti-backflow vent cabinet is simple, can effectively avoid experimental gas and is condensed into drop and flows back in operating cavity 11
The case where, it avoids making the inner wall of operating cavity 11 dirty, keep vent cabinet cleaning inside, and will not be to the experiment set on operating platform 2
Equipment impacts.It can avoid experimental gas simultaneously and be condensed into drop and flow back in operating cavity 11 to cause the health of experimenter
Harm.
In the above-described embodiments, the top of operating cavity 11 is equipped with air inlet 14, the end sealing of adapter cavity 13, at this point, behaviour
Make chamber 11 and be equivalent to set there are two air inlet 14, one is set to the top of operating cavity 11, another is set to the cabinet door 5 of operating cavity 11
Place can specifically select one using two air inlets 14 while can also using.It is poisonous and hazardous for that can generate during the experiment
When gas, cabinet door 5 can be closed, is only entered the wind, operator can be played anti-by being located at the air inlet 14 at 11 top of operating cavity
The effect of shield carries out situation in the outer observation experiment of cabinet door 5 convenient for operator's safety.
Specifically, the pressure in operating cavity 11 reduces after the gas in operating cavity 11 is inhaled into adapter cavity 13, this
When, airflow direction picture 1-4 in arrow direction shown in, extraneous gas by air inlet 14 enter operating cavity 11 in, operating cavity 11
The experimental gas (in experimentation generated gas, such as acid gas, steam) in operating cavity 11 is taken away in interior air flowing, and
And the scheme of two air inlets 14 relative to only pass through cabinet door 5 at an air inlet 14 air inlet the case where for, top again
Adding an air inlet 14 can guarantee intake enough and quickly the gas in operating cavity 11 can be discharged.The top of operating cavity 11
Portion be equipped with air inlet 14 when, the end sealing of adapter cavity 13, avoid outside air from the air inlet 14 on top entrance after directly into
Enter in adapter cavity 13, does not take away the experimental gas in operating cavity 11.
In the above-described embodiments, 43 density of vent of air draft part lower part is less than 43 density of vent on air draft part top.
Specifically, the vent 43 of the lower part of air draft part being closer away from its bottom and 12 connectivity part of air draft chamber, therefore, under air draft part
43 density of vent in portion is less than 43 density of vent on air draft part top, and avoidable adapter cavity 13 only has lower part under such setting
Enter the wind and from air draft chamber 12 discharge and the top of adapter cavity 13 do not enter the wind the case where, avoid gas residue in the upper of operating cavity 11
Portion, discharge are not thorough.
In the above-described embodiments, air draft part can be moved along operating platform 2, that is to say, that and the specific location of air draft part is indefinite,
The size of adapter cavity 13, position can be adjusted as the case may be, air draft part can be arranged close to experimental facilities and in sky
Between allow in the case where can suitably increase the volume etc. of adapter cavity 13, can effectively promote ventilation efficiency and exhaust effect.
In addition, in the present embodiment, for adapter cavity 13 quantity with no restrictions, can be one, it is two or more,
It can specifically be set according to size, the size of adapter cavity 13 etc. of operating cavity 11.
In the above-described embodiments, two kinds of air draft parts are enumerated with no restrictions, in the present embodiment for the specific structure of air draft part,
One is the air draft plate 41 for being set as being located in operating cavity 11 by air draft part, another kind is to set air draft part to be located at operating cavity
Air-exhausting duct 42 in 11.
Specifically, as depicted in figs. 1 and 2, when air draft part is set as the air draft plate 41 being located in operating cavity 11, the air draft plate
41 are enclosed adapter cavity 13 with the side wall of operating cavity 11.That is, air draft plate 41 is equivalent to partition, divide out of operating cavity 11
It is separated out adapter cavity 13, which is equipped with said exhaust hole 43 so that the cavity of partition two sides is connected to.Specifically,
The structure of the air draft plate 41 and setting position with no restrictions, as the cross section of the air draft plate 41 can be with U-shaped structure, V-type knot
Structure or only "-" type structure, the angle between any side wall or two side walls in the partition and operating cavity 11 enclose
Adapter cavity 13 is formed, when setting air draft plate 41 for air draft part, materials are convenient, overall structure is simple.It specifically can be by changing
Position and the size of adapter cavity 13 can be changed in the fixation position of operating platform 2 by becoming air draft plate 41, easy to operate.
As shown in Figure 3 and Figure 4, when air draft part being set as the air-exhausting duct 42 being located in operating cavity 11, in the air-exhausting duct 42
Cavity forms above-mentioned adapter cavity 13, and the tube wall of the air-exhausting duct 42 is equipped with said exhaust hole 43, specifically, the air-exhausting duct 42
Without limitation, such as the radial section of the air-exhausting duct 42 can be round, triangle or polygon for structure and position.It will
The scheme that air draft part is set as air-exhausting duct 42 can simplify overall structure, simplify processing technology.
Specifically, operating platform 2 is equipped with the through-hole 21 for installing air-exhausting duct 42, air-exhausting duct 42 and 2 grafting of operating platform
Or flanged joint.Specifically, the lower part of air-exhausting duct 42 is equipped with ring flange, can be flat by ring flange and operation by the air-exhausting duct 42
Platform 2 is fixed, and flanged joint is more stable；Or the lower part of air-exhausting duct 42 can also be equipped with block piece, directly by air-exhausting duct 42
Bottom, which is plugged in through-hole 21, abuts block piece and the upper surface of through-hole 21, plug connection operation easy to disassemble.Certainly,
The air-exhausting duct 42 can also be fixed otherwise, such as by air-exhausting duct 42 with operating platform 2 by being welded and fixed, and flange
Connection and plug connection are detachably connected air-exhausting duct 42 with operating platform 2, convenient for the disassembling operations to air-exhausting duct 42, are convenient for
It is cleaned.
Further, the quantity of through-hole 21 is greater than the quantity of air-exhausting duct 42, that is to say, that and the position of air-exhausting duct 42 is variable,
And extra through-hole 21 is then connected between operating cavity 11 and air draft chamber 12 so that gas in operating cavity 11 can along through-hole 21 into
Enter in air draft chamber 12.Specifically during the experiment, air-exhausting duct 42 can be set according to the size of experimental facilities and placement position
Position, i.e., air-exhausting duct 42 is position-movable, the position close to experimental facilities is moved to, convenient for arranging experimental gas
Out, flexibility is good.
In the above-described embodiments, the position of air-exhausting duct 42 is variable, specifically during the experiment, can be according to experimental facilities
Size and placement position set the position of air-exhausting duct 42, i.e., air-exhausting duct 42 is position-movable, is moved to close to experiment
The position of equipment, convenient for experimental gas to be discharged, flexibility is good.
In the above-described embodiments, which further includes set on the filter device between air outlet 15 and blower 3
6, experimental gas filters after gas outlet is discharged through filter device 6, then drains into atmosphere, and the setting of the filter device 6 can be to reality
It tests gas to be filtered, to ensure that the experimental gas for being discharged into atmosphere does not pollute the environment.
Further, above-mentioned filter device 6 includes dedicated waste gas absorption filler assembly.That is, filter device 6 is logical
The filtration for crossing dedicated waste gas absorption filler assembly can eliminate generated smell in experimentation, while can remove
The sour gas etc. being mixed in experimentation avoids being discharged into atmosphere and pollutes environment.It is selected corresponding thereto for different experiments
The waste gas absorption filler assembly answered, the specific ingredient of the waste gas absorption filler assembly is herein with no restrictions.
In the above-described embodiments, air duct 7 is additionally provided between blower 3 and air outlet 15, which is fixedly arranged on cabinet body 1
Lateral wall, and filter device 6 is set in the air duct 7, and the filter device 6 that is set as in the air duct 7 provides enough spaces, simultaneously
It is also not necessarily limited to the setting position of blower 3, is convenient for integrally-built arrangement.
In the above-described embodiments, air duct 7 is additionally provided with exhaust valve 8, and the feelings of a blower 3 are shared suitable for multiple vent cabinets
Condition, while applying also for certain vent cabinets equipped with sensing device, when operator close to when exhaust valve 8 aperture increase, row
Air quantity increases, and applicability is good.
Above are merely preferred embodiments of the utility model, it is noted that for the ordinary skill people of the art
For member, without departing from the principle of this utility model, several improvements and modifications can also be made, these improvements and modifications
Also it should be regarded as the protection scope of the utility model.
Claims (8)
1. a kind of anti-backflow vent cabinet, which is characterized in that including cabinet body (1), operating platform (2), air draft part and blower (3)；
The operating platform (2) is set in the cabinet body (1) and is separated into the inner space of the cabinet body (1) and is located above
Operating cavity (11) and underlying air draft chamber (12)；
The air draft part is located in the operating cavity (11) and is formed adapter cavity (13), and the air draft part, which is equipped with, is connected to the operation
The bottom of the vent (43) of chamber (11) and the adapter cavity (13), the adapter cavity (13) is connected to the air draft chamber (12)；
The cavity wall of the air draft chamber (12) is equipped with air outlet (15), and the air outlet (15) connect with the blower (3).
2. anti-backflow vent cabinet according to claim 1, which is characterized in that the top of the operating cavity (11) is equipped with air inlet
Mouth (14), the end sealing of the adapter cavity (13).
3. anti-backflow vent cabinet according to claim 1, which is characterized in that the vent (43) of air draft part lower part is close
Degree is less than vent (43) density on air draft part top.
4. anti-backflow vent cabinet according to claim 1-3, which is characterized in that the air draft part is set on described
Air draft plate (41) in operating cavity (11), the air draft plate (41) and the side wall of the operating cavity (11) are enclosed the transition
Chamber (13).
5. anti-backflow vent cabinet according to claim 1-3, which is characterized in that the air draft part is set on described
Air-exhausting duct (42) in operating cavity (11), the cavity in the air-exhausting duct (42) form the adapter cavity (13).
6. anti-backflow vent cabinet according to claim 1-3, which is characterized in that the air outlet (15) and described
Filter device (6) are additionally provided between blower (3).
7. anti-backflow vent cabinet according to claim 6, which is characterized in that the filter device (6) includes waste gas absorption
Filler assembly.
8. anti-backflow vent cabinet according to claim 6, which is characterized in that the blower (3) and the air outlet (15)
Between be additionally provided with air duct (7), the air duct (7) is fixedly arranged on the lateral wall of the cabinet body (1), and the filter device (6) is set to institute
It states in air duct (7), the air duct (7) is equipped with exhaust valve (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920058537.1U CN209363244U (en) | 2019-01-14 | 2019-01-14 | A kind of anti-backflow vent cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920058537.1U CN209363244U (en) | 2019-01-14 | 2019-01-14 | A kind of anti-backflow vent cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209363244U true CN209363244U (en) | 2019-09-10 |
Family
ID=67825397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920058537.1U Active CN209363244U (en) | 2019-01-14 | 2019-01-14 | A kind of anti-backflow vent cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209363244U (en) |
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2019
- 2019-01-14 CN CN201920058537.1U patent/CN209363244U/en active Active
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