CN106391638A - Strong acid/base-resistant lower exhaust ventilation cabinet - Google Patents
Strong acid/base-resistant lower exhaust ventilation cabinet Download PDFInfo
- Publication number
- CN106391638A CN106391638A CN201611039335.XA CN201611039335A CN106391638A CN 106391638 A CN106391638 A CN 106391638A CN 201611039335 A CN201611039335 A CN 201611039335A CN 106391638 A CN106391638 A CN 106391638A
- Authority
- CN
- China
- Prior art keywords
- cabinet
- strong acid
- exhaust
- swash plate
- vent cabinet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/02—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using chambers or hoods covering the area
- B08B15/023—Fume cabinets or cupboards, e.g. for laboratories
Abstract
The invention discloses a strong acid/base-resistant lower exhaust ventilation cabinet. The ventilation cabinet is connected with an air purifying device through a first exhaust pipe; the air purifying device is connected with a fan through a second exhaust pipe; the ventilation cabinet comprises a cabinet body; a worktable inwards recessed and a guide groove are arranged in the middle of the cabinet body, the guide groove and the worktable are arranged side by side; the guide groove and the worktable are separated through a guide separation plate; a guide plate arranged in an inclined manner is arranged above the worktable; the lower edge part of the guide plate is positioned above the guide groove; the guide plate is provided with multiple guide holes; a waste gas collecting pool for containing an alkaline neutral solution is formed below the worktable; the guide groove is connected with the waste gas collecting pool through a pipe; and the waste gas collecting pool is connected with the air purifying device through the first exhaust pipe. The strong acid/base-resistant lower exhaust ventilation cabinet is excellent in exhaust effect, performs secondary treatment for waste gas, is free of environmental pollution, and is long in service life of the cabinet body.
Description
Technical field
The invention belongs to technical field of waste gas treatment is and in particular to a kind of anti-strong acid-base down air-exhaust type vent cabinet.
Background technology
Vent cabinet is an indispensable part in laboratory ventilation design.In order that laboratory worker is not
Suck or swallow should have in the chemical substance that some poisonous, can causing a disease or toxicity fail to understand and organism, laboratory good
Ventilation.For stoping the absorption of some harmful steams, gas and particulate (smog, coal smoke, dust and aerosol), pollution
Material must be removed with the method for vent cabinet, ventilator cowling or local ventilation.Existing vent cabinet exhaust way is exhaust way,
Exhaust duct is arranged on the top of workbench, is drained, by exhaust duct, the waste gas producing when testing, but this upper exhaust way
Vent cabinet, the acid mist producing during experiment forms sour pearl on top, then residual titration to experimental ware in vent cabinet or table top, with
When the exhaust-gas treatment discharged not exclusively, the problems such as environmental pollution is serious.
Content of the invention
It is an object of the invention to：For problem present in existing vent cabinet, provide air draft under a kind of anti-strong acid-base
Formula vent cabinet, carry out air draft using lower air discharge structure, it is to avoid the sour pearl that acid mist is formed falls back to the situation generation on workbench,
And the waste gas siphoning away discharges after treatment, environmentally safe, long service life simultaneously.
To achieve these goals, the technical solution used in the present invention is：
A kind of anti-strong acid-base down air-exhaust type vent cabinet, described vent cabinet is connected with air cleaning dress by the first exhaust duct
Put, air cleaning unit is connected with blower fan by the second exhaust duct；
Described vent cabinet includes cabinet, have in the middle of cabinet indent workbench and with leading that workbench is arranged side by side
Chute, is separated by diaphragm between guiding gutter and workbench；It is provided with the deflector being in tilted layout, water conservancy diversion above workbench
The lower edge portion of plate is located above guiding gutter, and deflector is provided with several pod apertures；It is provided with for containing below workbench
The gas sampling pond of alkalescence neutralization solution, guiding gutter is connected with gas sampling pond pipeline, and described first is passed through in gas sampling pond
Exhaust duct connects described air cleaning unit；
Described air cleaning unit includes the water mist sprinkling mechanism for scrubbing exhaust gas；
Action pane for protecting operating personnel is additionally provided with described cabinet, at action pane, is provided with wind speed
Instrument, anemobiagraph is connected with watch-dog；Described blower fan is connected with wind speed regulating valve, and wind speed regulating valve is connected with actuator, execution
Device is connected with described watch-dog.
Preferably, the casing part of described cabinet is PP material using outer layer and internal layer is the composite of steelframe；Cabinet
The inner wall section of body, deflector, guiding gutter are all using polytetrafluoroethylene (PTFE) sheet material；Described workbench adopts epoxide resin material system
Become.
Preferably, the air outlet of described blower fan is also associated with silencer.
Preferably, described vent cabinet is arranged in the lab, and air cleaning unit and blower fan are arranged on roof.
Preferably, the size of described cabinet is 1800mm × 800mm × 2150mm.
Preferably, described deflector adopts the first swash plate portion and the bending plate structure of the second swash plate portion composition, and first is oblique
Plate portion is fastened on the top board of cabinet, and is provided with 10-20 ° of angle and top board between, and the first swash plate portion is oblique with second
There is between plate portion 100-120 ° of angle, the second swash plate portion offers described pod apertures, the lower limb in the second swash plate portion
Portion is located at the top of guiding gutter.
Due to employing technique scheme, the invention has the beneficial effects as follows：
1. the present invention adopts blower fan exhausting, forms the local space with negative pressure in cabinet, can produce during experiment
Waste gas take away from exhaust duct, it is to avoid at vent cabinet window, the staff of operation sucks toxic and harmful, thus protect
The safety of laboratory worker and health.
2. the inclination deflector that the present invention is arranged on the table, the acid mist producing during experiment directly leading from deflector
Discharge orifice is drained, and is then passed through in the gas sampling pond that guiding gutter enters into below workbench, the whole row for a down air-exhaust type
Wind structure, the sour pearl that waste gas is formed on deflector, also directly drop into guiding gutter along deflector, enter into gas sampling pond
In, will not fall after rise to workbench, it is to avoid in prior art, using upper air discharge structure, sour pearl falls the feelings to workbench after rise
Condition occurs.
3. the waste gas of the present invention carries out single treatment by gas sampling pond, be then passed through air cleaning unit carry out secondary
Process, can significantly more efficient remove waste gas in harmful substance, to reach discharge standard.
4. the cabinet material of the present invention has the effect of good strong alkali-acid resistance, organic corrosion.
Brief description
Fig. 1 is the vent cabinet of anti-strong acid-base down air-exhaust type vent cabinet and the signal of air cleaning unit installment state of the present invention
Figure.
Fig. 2 is the air cleaning unit of anti-strong acid-base down air-exhaust type vent cabinet of the present invention and fan section installment state is shown
It is intended to.
Fig. 3 is the cabinet section fluoroscopy structure chart of the present invention.
Fig. 4 is the cabinet sectional drawing of the present invention.
Fig. 5 is the wind speed control system structured flowchart of the present invention.
Reference：1- vent cabinet, 11- cabinet, 12- action pane, 13- deflector, 131- the first swash plate portion, 132-
Two swash plate portions, 14- pod apertures, 15- guiding gutter, 16- diaphragm, 17- workbench, 18- gas sampling pond, 2- first air draft
Pipe, 3- air cleaning unit, 4- second exhaust duct, 5- blower fan, 6- silencer, 71- anemobiagraph, 72- watch-dog, 73- actuator,
74- wind speed regulating valve.
Specific embodiment
Reference picture 1-5, a kind of anti-strong acid-base down air-exhaust type vent cabinet of the present invention, described vent cabinet 1 passes through first row
Airduct 2 is connected with air cleaning unit 3, and air cleaning unit 3 is connected with blower fan 5 by the second exhaust duct 4.
Vent cabinet 1 includes cabinet 11, has the workbench 17 of indent and be arranged side by side with workbench 17 in the middle of cabinet 11
Guiding gutter 15, separated by diaphragm 16 between guiding gutter 15 and workbench 17.It is provided with inclination cloth above workbench 17
The deflector 13 put, the lower edge portion of deflector 13 is located above guiding gutter 15, and deflector 13 is provided with several pod apertures 14.
It is provided with the gas sampling pond 18 for containing alkalescence neutralization solution, guiding gutter 15 is managed with gas sampling pond 18 below workbench 17
Road connects, and gas sampling pond 18 connects described air cleaning unit 3 by the first described exhaust duct 2.
Deflector 13 adopts the first swash plate portion 131 and the bending plate structure of the second swash plate portion 132 composition, the first swash plate portion
On 131 top boards being fastened on cabinet 11, and it is provided with 10-20 ° of angle and top board between, the first swash plate portion 131 and
There is between two swash plate portions 132 100-120 ° of angle, the second swash plate portion 132 offers described pod apertures 14, second is oblique
The lower edge portion of plate portion 132 is located at the top of guiding gutter 15.
Air cleaning unit 3 includes the water mist sprinkling mechanism for scrubbing exhaust gas.
Action pane 12 for protecting operating personnel is additionally provided with cabinet 11, at action pane 12, is provided with anemobiagraph
71, anemobiagraph 71 is connected with watch-dog 72；Described blower fan 5 is connected with wind speed regulating valve 74, and wind speed regulating valve 74 is connected with to be held
Row device 73, actuator 73 is connected with described watch-dog 72.
The size of cabinet 11 is 1800mm × 800mm × 2150mm, and it is PP material that the casing part of cabinet 11 adopts outer layer
With internal layer for steelframe composite, vent cabinet 1 shell expose aerial part be all PP structure, overall load-bearing be PP knot
The built-in steelframe of structure, any surface that do not have of built-in steelframe exposes in atmosphere, exempts from corrosion.The inner wall section of cabinet 11, water conservancy diversion
, all using polytetrafluoroethylene (PTFE) sheet material, polytetrafluoroethylene (PTFE) sheet material strong alkali-acid resistance, described workbench 17 adopts for plate 13, guiding gutter 15
Epoxide resin material is made, epoxy resin acid and alkali-resistance, high temperature resistant.
Vent cabinet 1 arranges in the lab, and air cleaning unit 3 and blower fan 5 are arranged on roof, can effectively save
About space, reduces noise.It is also associated with silencer 6 in the air outlet of blower fan 5, reduce the noise of blower fan 5 further.
The vent cabinet 1 of the present invention, when user carries out test operation on the workbench 17 of cabinet 11, the waste gas of generation
(acid mist), then pass through the exhausting of blower fan 5, the pod apertures 14 through deflector 13, enter in guiding gutter 15, be then passed through guiding gutter 15
Enter in gas sampling pond 18, in gas sampling pond 18, be loaded with special alkaline neutralizer, when waste gas and alkaline neutralizer
During contact, because EGT is generally higher, after running into the relatively low alkaline neutralizer of temperature, produce altitude temperature difference effect, most of quilt
Condense out and fall in neutralizer, the first exhaust duct 2 that the waste gas of remainder then passes through to connect gas sampling pond 18 enters into
In air cleaning unit 3, the essential core that air enters gasifying device is spraying mechanism, by spray process, removes waste gas further
In harmful substance, drain finally by blower fan 5.
The waste gas of the present invention, through deflector 13, guiding gutter 15, subsequently into gas sampling pond 18, enters after single treatment
Air cleaning unit 3, forms the path of a U-shaped like, the bottom in U-shaped path is exactly gas sampling pond 18, in U-shaped path
During traveling, due to altitude temperature difference effect, waste gas major part in gas sampling pond 18 can form sour pearl, stays in gas sampling pond 18.
Using the structure in this kind of U-shaped path, deacidify better.
The present invention is by being provided with micro- face anemobiagraph 71 real-time monitoring true face wind at the front-operated window 12 of vent cabinet 1
Speed, and wind velocity signal is passed to watch-dog 72, watch-dog 72 receive after wind speed value signal with setting value (typically 0.5M/S)
Relatively, when when operating personnel change the height of vent cabinet 1, the face wind speed of causing changes, equipment automatically adjusts variable air rate
Actuator 73 in regulating valve, changes valve opening adjusting face air quantity, when volume damper changes, duct static pressure with
Change and measured by duct static pressure sensor, the data obtained to be changed by frequency converter (VFD) according to pre-set programs
Blower fan 5 rotating speed, thus remain vent cabinet 1 operating surface wind speed (0.5m/s ± 0.1ms).
Claims (6)
1. a kind of anti-strong acid-base down air-exhaust type vent cabinet is it is characterised in that described vent cabinet (1) passes through the first exhaust duct (2)
It is connected with air cleaning unit (3), air cleaning unit (3) is connected with blower fan (5) by the second exhaust duct (4)；
Described vent cabinet (1) includes workbench (17) and and the workbench in the middle of cabinet (11), cabinet (11) with indent
(17) guiding gutter (15) being arranged side by side, is separated by diaphragm (16) between guiding gutter (15) and workbench (17)；Work
It is provided with the deflector (13) being in tilted layout, the lower edge portion of deflector (13) is located above guiding gutter (15) above platform (17),
Deflector (13) is provided with several pod apertures (14)；It is provided with below workbench (17) for containing the useless of alkalescence neutralization solution
Gas collecting pit (18), guiding gutter (15) is connected with gas sampling pond (18) pipeline, and gas sampling pond (18) pass through described first
Exhaust duct (2) connects described air cleaning unit (3)；
Described air cleaning unit (3) includes the water mist sprinkling mechanism for scrubbing exhaust gas；
Action pane (12) for protecting operating personnel is additionally provided with described cabinet (11), action pane (12) place is arranged
There is anemobiagraph (71), anemobiagraph (71) is connected with watch-dog (72)；Described blower fan (5) is connected with wind speed regulating valve (74), wind
Fast regulating valve (74) is connected with actuator (73), and actuator (73) is connected with described watch-dog (72).
2. anti-strong acid-base down air-exhaust type vent cabinet according to claim 1 it is characterised in that described cabinet (11) outer
Shell parts are PP material using outer layer and internal layer is the composite of steelframe；The inner wall section of cabinet (11) adopts polytetrafluoroethylene (PTFE)
Sheet material；Described workbench (17) is made using epoxide resin material.
3. anti-strong acid-base down air-exhaust type vent cabinet according to claim 1 is it is characterised in that the going out of described blower fan (5)
Air port is also associated with silencer (6).
4. anti-strong acid-base down air-exhaust type vent cabinet according to claim 1 is it is characterised in that described vent cabinet (1) sets
Put in the lab, air cleaning unit (3) and blower fan (5) are arranged on roof.
5. anti-strong acid-base down air-exhaust type vent cabinet according to claim 1 is it is characterised in that the chi of described cabinet (11)
Very little for 1800mm × 800mm × 2150mm.
6. anti-strong acid-base down air-exhaust type vent cabinet according to claim 1 is it is characterised in that described deflector (13) is adopted
The bending plate structure being formed with the first swash plate portion (131) and the second swash plate portion (132), the first swash plate portion (131) is fastened on
On the top board of cabinet (11), and it is provided with 10-20 ° of angle, the first swash plate portion (131) and the second swash plate portion and top board between
(132) there is between 100-120 ° of angle, the second swash plate portion (132) offers described pod apertures (14), the second swash plate
The lower edge portion in portion (132) is located at the top of guiding gutter (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611039335.XA CN106391638A (en) | 2016-11-21 | 2016-11-21 | Strong acid/base-resistant lower exhaust ventilation cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611039335.XA CN106391638A (en) | 2016-11-21 | 2016-11-21 | Strong acid/base-resistant lower exhaust ventilation cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106391638A true CN106391638A (en) | 2017-02-15 |
Family
ID=58082344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611039335.XA Pending CN106391638A (en) | 2016-11-21 | 2016-11-21 | Strong acid/base-resistant lower exhaust ventilation cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106391638A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107309237A (en) * | 2017-06-21 | 2017-11-03 | 巴斯夫上海涂料有限公司 | Volatile solvent discharge method and its equipment |
| CN108592283A (en) * | 2018-05-25 | 2018-09-28 | 北京普莱德斯工程技术有限责任公司 | A kind of ventilating system |
| CN108941139A (en) * | 2017-05-17 | 2018-12-07 | 奥卓莱流体科技（上海）有限公司 | Shower type washes sour laboratory hood |
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| CA1303967C (en) * | 1986-09-30 | 1992-06-23 | Richard Sixsmith | Combined fume scrubber/hood |
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| CN206240908U (en) * | 2016-11-21 | 2017-06-13 | 成都土壤肥料测试中心 | A kind of anti-strong acid-base down air-exhaust type vent cabinet |
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2016
- 2016-11-21 CN CN201611039335.XA patent/CN106391638A/en active Pending
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| Title |
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| 吕春绪等: "《化验室工作手册》", 30 April 1994, 江苏科学技术出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108941139A (en) * | 2017-05-17 | 2018-12-07 | 奥卓莱流体科技（上海）有限公司 | Shower type washes sour laboratory hood |
| CN108941139B (en) * | 2017-05-17 | 2023-10-31 | 奥卓莱流体科技（上海）有限公司 | Shower type acid-washing exhaust cabinet |
| CN107309237A (en) * | 2017-06-21 | 2017-11-03 | 巴斯夫上海涂料有限公司 | Volatile solvent discharge method and its equipment |
| CN108592283A (en) * | 2018-05-25 | 2018-09-28 | 北京普莱德斯工程技术有限责任公司 | A kind of ventilating system |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170215 |