CN104858198B - A kind of energy-saving safe perchloric acid vent cabinet - Google Patents
A kind of energy-saving safe perchloric acid vent cabinet Download PDFInfo
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- CN104858198B CN104858198B CN201510175861.8A CN201510175861A CN104858198B CN 104858198 B CN104858198 B CN 104858198B CN 201510175861 A CN201510175861 A CN 201510175861A CN 104858198 B CN104858198 B CN 104858198B
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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 present invention relates to a kind of energy-saving safe perchloric acid vent cabinet, including vent cabinet, variable air volume control system and acid mist purifying system, variable air volume control system includes setting variable air rate valve, exhaust blower and exhaust duct, acid mist purifying system divides water polo, nozzle, PP upper water boxs, PP lower headers including several PP, PP lower headers are provided with pH value regulation measuring pump, anti-corrosion water pump and multiple water-level probe control devices, PP lower headers provide circulated sprinkling water by water circulating pump and circulating water pipe to nozzle, and PP upper water boxs connect with PP lower header pipes；In use, acid mist gas is up, underwater row, counterflow exchange is formed, acid mist gas fully contacts with water smoke, and a large amount of acid mists dissolve in the perchloric acid that is purified in water；When the pH value of PP lower header reclaimed waters is reduced to certain numerical value, it is automatically added to drain the waste water for meeting discharge standard after alkaline reagent carries out neutralization reaction, is used again for continuing cycling through spray toward injecting fresh water quality in PP lower headers after waste water emptying.
Description
Technical field
The present invention relates to laboratory equipment field, specifically a kind of energy-saving safe perchloric acid vent cabinet.
Background technology
Vent cabinet is the most important safety means of Modern Laboratory, and it is ensured in vent cabinet enough by exhaust system
Negative pressure, guarantee experimenter and experimental situation are not polluted by chemical substance, and vent cabinet has strict air quantity control system, so
And perchloric acid vent cabinet is removed and ensured in vent cabinet enough outside negative pressure safety factor, also one important hazards need to do
To safety assurance, the crystalline solid that perchloric acid is exactly had in experimentation is adhered in the inwall and exhaust duct of vent cabinet
Wall.Handled before many metals in experimentation, perchloric acid HClO can be used often4Chemically reacted with alkali metal, this change
Substantial amounts of acid mist can be produced by learning course of reaction, and perchloric acid is diffused into the deflector and exhaust duct of vent cabinet by the wind-force of vent cabinet
The inwall in road, and perchloric acid easily crystallizes at normal temperatures, through accumulating after a while inside vent cabinet and inside exhaust duct
Perchloric acid crystallizing layer can be produced, after crystallizing layer reaches certain thickness, crystallizing layer encounters water or vibration or can produce combustion after hitting
Decrepitate is fried, and bursting strength is very large, in recent years when have the casualty accident of this respect, locate this hidden danger to disappear,
Experimenter carries out irregular artificial spraying-rinsing in ventilation shaft, although experimenter has done many effort, vent cabinet
Inside has and can not all cleaned inside the irregular airduct such as the elbow threeway of exhaust duct within a lot of turnings in place, these places
Perchloric acid crystallizing layer is easily produced, potential safety hazard is still very big, and this cleaning way cured the symptoms, not the disease also has waste
The shortcomings of water resource, labor intensive, leak.As shown in Figure of description 7,8, the waste gas of traditional vent cabinet is focused at roof
Reason discharge, the waste gas containing strong acid, which first corrodes exhaust duct and exhaust equipment or part acid solution, can precipitate or be adhered to exhaust duct
On, the time, which has been grown, will have waste reflux to experiments experiment room；And this system energy consumption is larger, exhaust system under normal circumstances
Air quantity scope is change, and the water of this purification is fixed, when this system only has even only one, partial ventilation cabinet
Vent cabinet causes to waste in use, this external cleaning system will be also all turned on.
The medium of vent cabinet is air and water, and the abundant contact for how solving air and water is the key of perchloric acid vent cabinet
Technology, the air current composition inside vent cabinet is continually changing, and it is unrealistic to do Outgassing model, only during experiment constantly
Summary data, also many parts and equipment are limited by relevant supplier, we by design point water it is more efficient divide water polo
Model, the hydraulic characteristic(s) of circulation allow the water pump of water pump manufacturer specialty this type customized, and upper and lower seat water tank is mostly PP materials
Matter, in the market do not have such product, can only mold customized, and all these research and development and productions all to perchloric acid vent cabinet is brought very
Technical barrier combines actual, continuous summing up experience, it is necessary to which we are theoretical, finally develops efficient, low energy consumption, inexpensive
Standarized perchloric acid's type vent cabinet.
The content of the invention
It is an object of the invention to for above-mentioned problem and shortage, there is provided a kind of safe and efficient, low energy consumption, it is low into
This normalized security energy-conservation perchloric acid vent cabinet, make the design of laboratory ventilation system more flexible, compatible stronger.
The technical proposal of the invention is realized in this way：A kind of energy-saving safe perchloric acid vent cabinet, including vent cabinet, ventilation
Configuration variable air volume control system and acid mist purifying system above cabinet, the variable air volume control system include being arranged on vent cabinet top
Variable air rate valve, exhaust blower and exhaust duct, the acid mist purifying system include be arranged on vent cabinet deflector and laboratory hood backboard
Between several PP divide water polo, be arranged on PP and divide the nozzle on water polo top, be arranged on PP and divide the PP upper water boxs of water polo bottom, set
The PP lower headers in laboratory hood base are put, PP lower headers are provided with pH value regulation measuring pump, anti-corrosion water pump and multiple water-level probes
Control device, PP lower headers provide circulated sprinkling water, PP upper water boxs and water under PP by water circulating pump and circulating water pipe to nozzle
Case pipe connects；In use, acid mist gas is up, underwater row, counterflow exchange is formed, acid mist gas fully contacts with water smoke, largely
Acid mist dissolves in the perchloric acid that is purified in water；Measuring pump is also provided with simultaneously, when the pH value of PP lower header reclaimed waters is reduced to a fixed number
During value, it is automatically added to drain the waste water for meeting discharge standard after alkaline reagent carries out neutralization reaction, again toward under PP after waste water emptying
Fresh water is injected in water tank to use for continuing cycling through spray.
Further, the wind speed of the Section Design windward 2m/s of the vent cabinet；The operating window safety surface wind speed of vent cabinet
0.5m/s, operating window open maximum height 700mm.
Further, the PP divides water polo fillter section to be highly 300mm, and when vent cabinet maximum quantity of wind is run, acid mist passes through
PP divides the time 0.15s of water polo fillter section.
Further, the nozzle selects the atomizer of 120 degree of spray angle, quantity 2-3, the material choosing of nozzle
With the strong PP materials of antiseptic property.
Further, the PP divides water polo diameter 50mm, PP to divide water polo to be oval-shaped ball, and ball surface has many tiny
Point water band, inside have staggeredly divide water band, PP divides water polo to be used to improving adsorption area of the water to acid mist, at the same also increase absorption when
Between, PP divides the material selection antiseptic property of water polo strong PP materials.
Further, the water circulating pump is adopted from the strong PP materials of antiseptic property, low noise type centrifugal magnet pump, design
With water-carrying capacity 2-3m3/ h, lift 15-20m magnetic centrifugal water pump, power of motor 0.55kw.
Further, PP lower headers position below overflow open height, equipped with liquid level display, when liquid level is too low
There to be alarm signal to send, all accessories and probe material selection anti-corrosive properties material.PH value is controlled before draining, when pH value reaches
It can be discharged during discharge standard, inorganic salts are deposited in inside water tank by acid-base neutralization reaction, and to avoid such a situation, every month is followed
Ring empties waste water after discharging 15 minutes, then fills it up with fresh water quality.Alkaline reagent is automatically added to by measuring pump according to pH value to carry out
Drain waste water after neutralization reaction, and inject fresh water quality；The working condition of measuring pump and the measurement result of pH value are contacted one
Rise, when pH value size setting value, measuring pump will be started working, and the solution storage capacity of alkali tank will be pacified in being designed for this
Full monitoring, it is ensured that there is the alkali lye of abundance the inside.
Further, variable air volume control system includes air velocity transducer, displacement transducer, VAV control valve and control
Device, air velocity transducer measure the face wind speed of vent cabinet, and displacement transducer and air velocity transducer calculate the standard air quantity of vent cabinet,
The aperture of controller quick regulation VAV control valve, ensure vent cabinet standard airflow value and its stability；Pacify above vent cabinet
Region install sensor is filled, vent cabinet face wind speed automatically switches；The form Lift of vent cabinet is too high or too low, controller meeting
Alarm signal is sent, to correct immediately；Face wind speed is too high or too low, and controller can send alarm signal, so as to
Immediately amendment；In emergency circumstances, emergency exhaust is opened, vent cabinet exhaust air rate by VAV control, is not worked with maximum quantity of wind.
Further, cistern water level safety monitoring device, water circulating pump safety monitoring device, PH controllers and meter are additionally provided with
Measure the safety monitoring device of pump, the safety monitoring device of alkali liquid tank, the safety monitoring device of sour water collecting box, water supply safety monitoring
Device, draining safety monitoring device, vent cabinet air quantity monitoring device, the safety monitoring device of exhaust blower, fillter section drag characteristic
Safety monitoring device, all these supervising devices are CSRC and are reserved with and automatic building control system and network interface and general
Communications protocol.
The present invention configures water filtering system inside vent cabinet, the characteristic of water is quickly dissolved in using perchloric acid, to perchloric acid
Up to 99% absorptivity is carried out, perchloric acid crystallizing layer will not be produced again inside laboratory hood inside and exhaust duct, effectively prevent
Combustion explosion accident occurs caused by producing crystallizing layer, thoroughly solves potential safety hazard, creates a safety, energy-saving and environmental protection, relaxes
Suitable laboratory.
The present invention is compared with vent cabinet cleaning system in the market：
1st, it is safer：Vent cabinet of the present invention by strong acid such as efficient absorption perchloric acid, avoid perchloric acid in ventilation shaft and
Crystallizing layer is produced on part, is set off an explosion；
2nd, perchloric acid vent cabinet uses more flexibly, more energy-saving and environmental protection.
The present invention is not limited to perchloric acid experiment, can be used for the strong acid such as hydrochloric acid, nitric acid, hydrofluoric acid bases and soluble in water
Organic chemicals experiment, so the use range of perchloric acid type vent cabinet is that comparison is extensive, there is perchloric acid type to lead to
After wind cabinet, wide platform is provided for the designer of laboratory industry, to build safe and environment-friendly, energy-conservation a experiment
Room provides next important helper, it is desirable to is accomplished something in this field, prosperous laboratory industry of leading is towards before more healthy direction
Enter.
The present invention is further illustrated below in conjunction with the accompanying drawings.
Brief description of the drawings
Fig. 1 is the operation principle schematic diagram of the present invention；
Fig. 2 is the structural representation of vent cabinet system of the present invention；
Fig. 3 is the schematic diagram of vent cabinet clean-up stage sectional wind velocity of the present invention；
Fig. 4 is vent cabinet operation principle schematic diagram of the present invention；
Fig. 5 is ventilation hood control system schematic diagram of the present invention；
Fig. 6 is vent cabinet PP lower header schematic diagrames of the present invention；
Fig. 7 is the acid mist purifying System Working Principle figure of existing vent cabinet；
Fig. 8 is existing vent cabinet system structure diagram.
Embodiment
As shown in Fig. 1,2,3,4,6, the present invention is a kind of energy-saving safe perchloric acid vent cabinet, including vent cabinet 1, vent cabinet
1 top configuration variable air volume control system and acid mist purifying system, the variable air volume control system include being arranged on the top of vent cabinet 1
Variable air rate valve 2, exhaust blower 3 and exhaust duct 4, the acid mist purifying system include be arranged on the deflector 11 of vent cabinet 1 and air draft
Several PP between cabinet backboard 12, which divide water polo 5, are arranged on PP divides the nozzle 6 on the top of water polo 5, is arranged on PP and divides the bottom of water polo 5
PP upper water boxs 7, be arranged on the PP lower headers 8 of laboratory hood base 13, PP lower headers 8 are provided with pH value regulation measuring pump, anti-corrosion water
Pump and multiple water-level probe control devices, PP lower headers 8 provide circulation by water circulating pump 81 and circulating water pipe 82 to nozzle 6
Shower water, PP upper water boxs 7 connect with the pipe of PP lower headers 8；In use, acid mist gas is up, underwater row, counterflow exchange, acid are formed
Fog body fully contacts with water smoke, and a large amount of acid mists dissolve in the perchloric acid that is purified in water；Measuring pump is also provided with simultaneously, when water under PP
When the pH value of the reclaimed water of case 8 is reduced to certain numerical value, it is automatically added to drain after alkaline reagent carries out neutralization reaction and meet discharge standard
Waste water, used again for continuing cycling through spray toward injecting fresh water in PP lower headers 8 after waste water emptying.Fig. 5 is logical for the present invention
Wind cabinet control system schematic diagram.
As shown in Figure 7,8, the acid mist purifying System Working Principle figure of traditional vent cabinet, finds out from the schematic diagram, acid
Mist needs by vent cabinet internal structure, exhaust duct and pipe fitting, exhaust blower before cleaning, and these places can produce perchloric acid knot
Crystal layer, many places potential safety hazard being left, these traditional vent cabinets are all producing both at home and abroad at present, but for the row of similar perchloric acid
Wind cabinet is just without corresponding product.We carry out fully optimized design on the basis of tradition ventilation cabinet, including vent cabinet is outer
Type, the exhaust air rate of laboratory hood, the purifier of laboratory hood, the anti-corrosive properties material of laboratory hood, each side such as security control of laboratory hood
Face carries out demonstration design comprehensively.
As shown in figure 3, the wind speed 2m/s of Section Design windward of perchloric acid vent cabinet of the present invention, wind speed is unsuitable too low, too low
The appearance and size of laboratory hood, occupation of land, cost, installation difficulty increase can be increased；Wind speed is unsuitable too high, too high wind resistance increase, water
Drop is easily blown to inside exhaust duct, operating cost increase.
As shown in figure 4, the operating window safety surface wind speed 0.5m/s of perchloric acid vent cabinet 1 of the present invention, operating window is opened
Maximum height 700mm, effective clear span 1300mm of 1500 wide vent cabinet operating windows, so calculate：
Vent cabinet maximum pump discharge：0.5*1300*700 ≈1700 m3/h
Cross-sectional area：1700/3600/2.0=0.236 m2
Then vent cabinet fillter section is only deep：0.236/1.3=180mm, net deep L=200mm is taken.
As shown in figure 1, air is up, underwater row, counterflow exchange is formed, air fully contacts with water smoke, and a large amount of acid mists are molten
Enter the target for reaching purification perchloric acid in water, unsuitable too low, the too low contact incorporation time that can cause air with water smoke of fillter section
Shorter, water smoke can not fully absorb acid solution, and fillter section is unsuitable too high, the too high resistance that will increase air draft, cause the pressure of exhaust blower
Power becomes big, increases energy consumption, and it is high now to design 300mm, during the operation of laboratory hood maximum quantity of wind, time that acid mist passes through fillter section：0.3/2
=0.15s, this time obtained by high degree in contact is very limited amount of in fact, even if fillter section is highly adjusted maximum height
1000mm, acid mist also only have 0.5s by time of fillter section, this by be this product an important technology index and difficult point.
For acid mist purifying efficiency in addition to time factor, the area also contacted with acid mist with water smoke has very big relation, the fogging degree of water spray
Higher, it is stronger that it adsorbs the ability of acid mist, while nozzle quantity is enough, and acid mist process can be completely covered in the guarantee water smoke that gushes out
Section face, by taking 1500 wide vent cabinets as an example, according to the shape and space size of vent cabinet, the mist preferably from 120 degree of spray angle
Change nozzle, quantity 2-3.The material of nozzle requires that antiseptic property is strong, at present to select PP materials more.
The atomization ability of nozzle 6 is limited, and in fillter section, we equipped with diameter 50mm divide water polo, and it is oval to divide water polo
Shape spheroid, ball surface have it is many it is tiny divide water band, inside have staggeredly divide water band, by dividing the function of water polo to provide significantly
Water also increases adsorption time to the adsorption area of acid mist.The material of water polo is divided to require that antiseptic property is strong, it is at present to select more
PP materials.
Remove the nebulization efficiency of water, divide water polo divide water efficiency, it is contemplated that the irrigation pressure of nozzle and injection flow rate
Design, we will be matched according to the proper ratio of air quantity and water, can suitably increase the flow of water, the material of water circulating pump
It is required that antiseptic property is strong, it is at present to select PP materials, low noise type centrifugal magnet pump more.There is water circulating pump, the water energy to gush out
Enough recycle, reduce water consumption, design uses water-carrying capacity 2-3m3/h, lift 15-20m magnetic centrifugal water pump, power of motor
0.55kw。
As acid mist is constantly dissolved in recirculated water, the PH of water can be more and more lower, and the concentration of perchloric acid also can be increasingly
Height, even up to saturated concentration, cause the adsorption efficiency of the aqueous solution accordingly to reduce, we design by measuring pump according to pH value from
Dynamic add after alkaline reagent carries out neutralization reaction drains waste water, and injects fresh water quality.
It can be seen from Fig. 1 that PP upper water boxs 7 is in irregular shape, installation operation space is limited, fully to examine in the design process
Consider the fastness of the structure of water tank in itself, to consider that the fixed installation of upper water box, the installation of nozzle, maintenance are changed, filtering
Section divides the installation of water polo, maintenance to change, and spray casing organically combines with vent cabinet, and can such vent cabinet standardize
One key factor, spray casing is particularly standardized production by mould.
As shown in Figure 6, the appearance and size of PP lower headers 8 is made to measure according to the lower seat of laboratory hood, convenient maintenance from now on
Maintenance, water tank is waste water collection device, it is necessary to carries out corresponding security control：
Feedwater installation control：Appropriately designed feedwater height, overflow open height, drain height, the position below overflow open height
Liquid level display will be had by installing meter, will have alarm signal to send when liquid level is too low, and all accessories and probe material must be selected
Anti-corrosive properties material, such as PP materials.
Draining security control：PH value is controlled before draining, can be discharged when pH value reaches discharge standard, acid-base neutralization is anti-
Inorganic salts should be deposited in inside water tank, to avoid such a situation, we will emphasize every month in this operational procedure（The specific cycle
Can suitably it adjust）Cycle bleeder empties waste water after 15 minutes, then fills it up with fresh water quality.
The security control of measuring pump：The working condition of measuring pump and the measurement result of pH value link together, and work as PH
When being worth size setting value, measuring pump will start working, and will carry out security monitoring to the solution storage capacity of alkali tank in being designed for this, really
Protecting the inside has the alkali lye of abundance.
The control of perchloric acid vent cabinet air quantity：
Negative pressure inside vent cabinet depends on the exhaust air rate of vent cabinet, and phase is also kept on the premise of enough negative pressure are ensured
To independent stability, to ensure the enough securities of perchloric acid type vent cabinet, we ensure these in R ＆ D of complex
Safety factor, variable air volume control system is configured above vent cabinet, this variable air volume control system is together with acid mist purifying system
As the standard configuration of perchloric acid vent cabinet, standard product is formed.
The face wind speed of vent cabinet is measured according to air velocity transducer.
The standard air quantity of vent cabinet is calculated according to displacement transducer and face air velocity transducer, controller quick regulation becomes wind
The aperture of control valve, ensure vent cabinet standard airflow value and its stability.
Above vent cabinet there is sensor in installation region, and vent cabinet face wind speed automatically switches, and both ensures safety, saves energy again
Source.
Form Lift is too high or too low, and controller can send alarm signal, to correct immediately.
Face wind speed is too high or too low, and controller can send alarm signal, to correct immediately.
In emergency circumstances, emergency exhaust is opened, vent cabinet exhaust air rate by VAV control, is not worked with maximum quantity of wind.
Centralized Monitoring：Cistern water level security monitoring, water circulating pump security monitoring, PH controllers and the safe of measuring pump are supervised
Control, the security monitoring of alkali liquid tank, the security monitoring of sour water collecting box, water supply safety monitoring, draining security monitoring, vent cabinet air quantity
Monitoring, the security monitoring of exhaust blower, fillter section drag characteristic security monitoring etc., all these monitoring system designs be CSRC simultaneously
Be reserved with automatic building control system and network interface and general communications protocol, reach purpose simple to operate, easy to use.
System design is more versatile and flexible：The vent cabinet quantity in physics and chemistry class laboratory is more, is not every and is required for doing acid
Mist purifier, we have to be divided into two systems, and a set of configuration acid mist purifying device, the another set of acid mist purifying that do not configure fill
Put, number of tubes increase, the increase of blower fan quantity, the increase of pipe well point position of ventilating system, automatically controlled quantity increase, overall cost increases
Add, otherwise just select a larger acid mist purifying device, increase energy consumption；There is perchloric acid type vent cabinet, designer is for having
Perchloric acid type vent cabinet is selected in the place that acid mist purifying needs, and perchloric acid vent cabinet shares a system with other vent cabinets, no longer
Install acid mist purifying device additional, save the energy, reduce cost, it is more environmentally-friendly.
The extension of new product：
Have in the market import brand without pipe ventilated cabinet（Meet JG/T385 2012）, it mainly uses activated carbon
Organic chemical substance and slight acid mist are adsorbed, there are many limitations in laboratory applications, if our perchloric acid acid type
Vent cabinet can by the environment monitoring of relevant environment monitoring department, succeed in developing, can equally make no pipe ventilated cabinet, from now on
Acid mist purifying system is organically combined with charcoal absorption system, makes no pipe ventilated cabinet, expands answering for such vent cabinet
With scope, the energy consumption in laboratory will be effectively controlled.
Attached economical and energy saving analytical table, by taking In Guangzhou Area as an example：
Every vent cabinet hourly rate table（Member）
| Vent cabinet model | Purification expense | Power consumption expense | Ventilation expense | Full payment |
| FH-1200 | 1.36 | 0. 60 | 0.30 | 2.26 |
| FH-1500 | 1.36 | 0.60 | 0.40 | 2.36 |
| FH-1800 | 1.36 | 0.60 | 0.45 | 2.41 |
The expenses statement of every vent cabinet air draft air-conditioning loss（Member）
| Vent cabinet model | FH-1200 | FH-1500 | FH-1800 |
| Air-conditioning expense | 8.26 | 10.67 | 13.07 |
From the aforegoing it can be seen that such as making no pipeline type ventilation, laboratory operating cost will be substantially reduced.
Above-described embodiment is the preferable embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any Spirit Essences without departing from the present invention with made under principle change, modification, replacement, combine, simplification,
Equivalent substitute mode is should be, is included within protection scope of the present invention.
Claims (1)
- A kind of 1. energy-saving safe perchloric acid vent cabinet, it is characterised in that：Including vent cabinet（1）, vent cabinet（1）Top configuration becomes wind Amount control system and acid mist purifying system, the variable air volume control system include being arranged on vent cabinet（1）The variable air rate valve on top （2）, exhaust blower（3）And exhaust duct（4）, the acid mist purifying system is including being arranged on vent cabinet（1）Deflector（11）And air draft Cabinet backboard（12）Between several PP divide water polo（5）, be arranged on PP and divide water polo（5）The nozzle on top（6）, be arranged on PP and divide water Ball（5）The PP upper water boxs of bottom（7）, be arranged on laboratory hood base（13）PP lower headers（8）, PP lower headers（8）Provided with pH value Adjust measuring pump, anti-corrosion water pump and multiple water-level probe control devices, PP lower headers（8）Pass through water circulating pump（81）And circulation Water pipe（82）To nozzle（6）Circulated sprinkling water, PP upper water boxs are provided（7）With PP lower headers（8）Pipe connects；In use, acid mist gas Body is up, underwater row, forms counterflow exchange, and acid mist gas fully contacts with water smoke, and a large amount of acid mists dissolve in the height that is purified in water Chloric acid；Measuring pump is also provided with simultaneously, when PP lower headers（8）When the pH value of reclaimed water is reduced to certain numerical value, alkaline examination is automatically added to Agent drains the waste water for meeting discharge standard after carrying out neutralization reaction, again toward PP lower headers after waste water emptying（8）Middle injection fresh water Used for continuing cycling through spray；The vent cabinet（1）The wind speed of Section Design windward 2m/s；Vent cabinet（1）Operating window Safety surface wind speed 0.5m/s, operating window open maximum height 700mm；The PP divides water polo（5）Fillter section is highly 300mm, Vent cabinet（1）When maximum quantity of wind is run, acid mist divides water polo by PP（5）The time 0.15s of fillter section；The nozzle（6）From 120 degree of atomizer of spray angle, quantity 2-3, nozzle（6）Material selection anti-corrosion The strong PP materials of performance；The PP divides water polo（5）Diameter 50mm, PP divide water polo（5）Oval-shaped ball, ball surface have it is many it is tiny divide water band, Inside have staggeredly divide water band, PP divides water polo（5）For improving adsorption area of the water to acid mist, while also increase adsorption time, PP divides water polo（5）The strong PP materials of material selection antiseptic property；The water circulating pump（81）From the strong PP materials of antiseptic property, low noise type centrifugal magnet pump, design uses water-carrying capacity 2-3m3/ h, lift 15-20m magnetic centrifugal water pump, power of motor 0.55kw；The PP lower headers（8）Liquid level display is housed below overflow open height, there will be alarm signal hair when liquid level is too low Go out, all accessories and probe material selection anti-corrosive properties material；Variable air volume control system includes air velocity transducer, displacement transducer, VAV control valve and controller, and air velocity transducer is surveyed The face wind speed of vent cabinet is measured, displacement transducer and air velocity transducer calculate vent cabinet（1）Standard air quantity, the fast velocity modulation of controller The aperture of VAV control valve is saved, ensures vent cabinet（1）Standard airflow value and its stability；Vent cabinet（1）Top installation region Install sensor, vent cabinet（1）Face wind speed automatically switches；Vent cabinet（1）Form Lift it is too high or too low, controller meeting Alarm signal is sent, to correct immediately；Face wind speed is too high or too low, and controller can send alarm signal, so as to Immediately amendment；In emergency circumstances, emergency exhaust, vent cabinet are opened（1）Exhaust air rate is not by VAV control, with maximum quantity of wind work Make；It is additionally provided with the safety prison of cistern water level safety monitoring device, water circulating pump safety monitoring device, PH controllers and measuring pump Control device, the safety monitoring device of alkali liquid tank, the safety monitoring device of sour water collecting box, water supply safety supervising device, draining peace Full supervising device, vent cabinet air quantity monitoring device, the safety monitoring device of exhaust blower, fillter section drag characteristic security monitoring dress Put, all these supervising devices are CSRC and are reserved with and automatic building control system and network interface and general communications protocol.
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| CN201510175861.8A CN104858198B (en) | 2015-04-15 | 2015-04-15 | A kind of energy-saving safe perchloric acid vent cabinet |
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| CN201510175861.8A CN104858198B (en) | 2015-04-15 | 2015-04-15 | A kind of energy-saving safe perchloric acid vent cabinet |
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| CN104858198B true CN104858198B (en) | 2017-12-01 |
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| CN106391638A (en) * | 2016-11-21 | 2017-02-15 | 成都土壤肥料测试中心 | Strong acid/base-resistant lower exhaust ventilation cabinet |
| CN108405542A (en) * | 2017-02-09 | 2018-08-17 | 王楚平 | Rinsing type laboratory hood |
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| KR102012962B1 (en) * | 2017-11-24 | 2019-08-21 | 최진선 | Fume hood |
| CN108015082B (en) * | 2017-12-06 | 2023-09-05 | 徐州市环境监测中心站 | Special ventilation kitchen under acid digestion condition in soil heavy metal detection |
| 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 |
| CN110479722A (en) * | 2019-08-20 | 2019-11-22 | 广东天赐湾实验室装备制造有限公司 | The energy-saving safe laboratory hood circulatory system |
| CN114393001B (en) * | 2022-01-18 | 2023-12-22 | 司唯(徐州)环境科学研究院有限公司 | Air filtration purifier and laboratory are with environmental protection net gas formula fume chamber |
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| US3815334A (en) * | 1970-04-10 | 1974-06-11 | Steuler Industriewerke Gmbh | Gas-liquid contact device |
| CA1303967C (en) * | 1986-09-30 | 1992-06-23 | Richard Sixsmith | Combined fume scrubber/hood |
| DE9101439U1 (en) * | 1991-02-08 | 1991-05-08 | Kt Kunststofftechnik Gmbh, 5210 Troisdorf, De | |
| CN2702790Y (en) * | 2003-12-29 | 2005-06-01 | 王琳 | Dust adsorbing device for sucking flying dust |
| CN101912863B (en) * | 2010-07-22 | 2012-03-21 | 广东科艺普实验室设备研制有限公司 | Multi-ventilated-case cooperating exhaust control system |
| CN102554194B (en) * | 2012-03-07 | 2013-10-02 | 福安市广源机电有限公司 | Gas purifying device for fusion welding wire of electrode lead plate of energy-saving environment-friendly lead-acid cell |
| CN203018419U (en) * | 2013-01-07 | 2013-06-26 | 中华人民共和国上海出入境检验检疫局 | Washing type multifunctional ventilation cabinet |
| CN204974671U (en) * | 2015-04-15 | 2016-01-20 | 广州市泛美实业有限公司 | Safe energy -conserving perchloric acid fume chamber |
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Address after: 415 room 19, 510663 Xiangshan Road, hi tech Development Zone, Guangdong, Guangzhou, China Applicant after: Guangzhou Pan American laboratory system Polytron Technologies Inc Address before: 510308, room 1022, 1308-1310 Xingang East Road, Guangzhou, Guangdong, Haizhuqu District Applicant before: Guangzhou Fanmei Industrial Co., Ltd. |
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Address after: 510663 floor 2, building B8, No. 11, Kaiyuan Avenue, Huangpu District, Guangzhou, Guangdong (room 264) Patentee after: GUANGZHOU FANMEI LABORATORY SYSTEM TECHNOLOGY Co.,Ltd. Address before: 510663 room 415, No. 19, Xiangshan Road, high tech Development Zone, Guangzhou, Guangdong Patentee before: GUANGZHOU FANMEI LABORATORY SYSTEM TECHNOLOGY Co.,Ltd. |