Explosion-proof Silent Fresh Air Ventilator
- Model: BXFJ
- Brand: Hualong
- Category: Explosion-proof Silent Fresh Air Ventilator
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Product Introduction

One、Product Overview
1.Product Name: BXFJ-120Explosion-proof Silent Fresh Air Ventilator
2.Product Model And ItsMeaning:

3.Explosion-proof Marking:"Ex db ⅡC T4 Gb / Ex tb IIIC T130℃ Db"
4.ProductApplicable Standard:
GB/T 3836.1-2021《Explosive Atmosphere Part 1:equipment General Requirements》
GB/T 3836.2-2021《Explosive Atmosphere Part 2: By Flameproof Enclosure"d"Protection的equipment》
GB/T 3836.31-2021《Explosive Atmosphere no.31Part:ByDust ProofPointGasEnclosure"t"Protection的equipment》GB/T3836.15-2017《Explosive Atmosphere no.15Part:Electricaldevice的Design、Selection And Installation》
2、mainlyapplication And Application Scope
BXFJ-120Explosion-proof Silent Fresh Air Ventilator(followingSimpleCalledInnovationRiskMachine)mainlyUsersInCommunication50Hz,VoltageCustomer First220V的circuitIn,indangerousAreaZone 1、Zone 2,ⅡA、ⅡB、Group IIC,Temperature ClassT1~T4UnitExplosive AtmosphereIn。
Widely used in production workshops and chemical analysis laboratories containing explosive hazardous combustible materials, such as petroleum, chemical, pharmaceutical, metallurgical, and chemical laboratory industries, for ventilation and air exchange purposes.。
It can also serve as an air supply source for pressurized explosion-proof enclosures. When no compressed air is available on-site, this fresh air unit can pressurize fresh air from safe areas into the pressurized chamber to maintain internal pressure, offering many advantages over traditional explosion-proof centrifugal fans: low power consumption, low noise, and stable operation.。
Working Conditions:
a.OffshoreUnplugInvincibleexceed2000m;
b.Surrounding EnvironmenttemperatureFor-20~+40℃;
c.PerimeterAroundAerospaceStationRelative HumidityInvincibleGreaterIn95%(+25℃);
d.innonBreakBadMetallurgyMetal And Insulation的GasAnd vapors的EnvironmentIn;
e.Pollution Degree:3Level;
f.Installation Category:II、IIIVarious;
g.UsersInOutdoor的solarMostGreaterRadiationRadiation1120W/㎡,LowerRainStrength6mm/min;
h. Significantly ShakeInteraction And IntenseIntense的impactVibrationInteraction的InvincibleAspect;
Three、mainlyspecification And Technical Parameters
Model | RiskQualitym/h | StaticPressure(Pa) | Power(W) | noiseSound(dB) | Overall Dimensions(UpOrderSystem) | WeldingPipedimensiond/RxL |
BXFJ-20 | 200 | 115 | 10 | 21 | 340X285X340 | 100 |
BXFJ-40 | 400 | 132 | 20 | 27 | 340X285X340 | 100 |
BXFJ-60 | 600 | 180 | 30 | 29 | 400X285X400 | 150 |
BXFJ-80 | 800 | 295 | 40 | 32 | 400X285X400 | 150 |
BXFJ-120 | 1200 | 330 | 60 | 40 | 400X285X400 | 150 |
4、structurefeature
FoundationProductForFlameproof Type,ByFlameproof TypeExcellentStepMotor、DualDistancecenterBladeTanker And VoluteShell、DuringFilterNetwork、RiskMachineBoxEtc.Componentscomposition。The volute of the fresh air fan is made entirely of metal, with scientifically designed air ducts for durability; the filter screen effectively filters dust and particulate matter from the air, and high-efficiency filter cores can be customized to achieve PM2.5 purification efficiency up to Level 11; internally, a low-noise module design is adopted, with imported noise reduction technology, making it quieter, fresher, and more energy-efficient;Through these multiple optimized designs, the fresh air fan ensures that in flammable and explosive chemical laboratories, it can provide short-term high-volume exhaust of flammable air, and can also reversely inject multi-layer filtered and purified fresh oxygen-rich air into the room, reducing pollutant content in the air, removing formaldehyde and haze, allowing fresh air to be breathed 24 hours a day without opening windows, enjoying a natural breathing experience.
Five、Use And Maintenance
1.InnovationRiskMachineInstallationFrontShouldInspectNameplateSupremeLocationsColumnbasicTechnologyIndexaccordingIsnocompliantActualPracticalUse Conditions。
2. During installation and fixing, the fresh air unit must not be tilted or loose; fastening screws should be secured firmly with spring washers and flat washers.。
3. The internal and external grounding wires of the cable should be reliably grounded.。
4. Before use, check whether the wiring is correct and whether all fastening screws (bolts) on the housing are tightened.。
5. During maintenance, "opening the cover with power on is strictly prohibited," and the flameproof surfaces must not be bumped or damaged. After maintenance, the flameproof surfaces should be wiped clean and coated with 204-1 anti-rust oil.。
6. During maintenance, if the sealing ring of the cable entry device shows signs of aging, it should be promptly replaced with one of the same specifications and dimensions to ensure explosion-proof performance.。
7. During installation and use of this product, a protective mesh must be installed at the air inlet to prevent foreign objects from entering the duct, ensuring the air inlet meets IP20.。
8. The explosion-proof motor should be used in accordance with its instruction manual.。
6、Transportation、Storage
1RiskMachineinTransportationDuringExtentIn,ShouldpreventionImpact Or High-strengthIntensevibration, And ShouldWithpreventionRain and snowInvade的Measures。
2. The fan should be stored in a warehouse with good air circulation, no dripping water or liquid intrusion, an ambient temperature not exceeding +40°C and not lower than -25°C, and a relative humidity not exceeding 98% (+25°C).。
3. The surrounding environment for fan storage should not contain corrosive gases that could damage metal and its insulation.。
7、WithMachinearticleComponents
1.Product UsageManual;
2.ProductCertificate of Conformity。
8、StableGoodsRequiredWell-known
1.StableGoodsWhenPleaseAttentionBrightRiskMachine的completeModel、Name And quantity。
2. If the equipment malfunctions, please contact the manufacturer promptly.。

Technical Parameters
| Product Model | BXFJ |
| Product Brand | Hualong |
| Manufacturer | Henan Hualong Electrical Equipment Co., Ltd |
| Product Categories | Explosion-proof Silent Fresh Air Ventilator |
ShouldUsersField
FoundationProducts widely used infollowingindustry And location:
Applicable Industries
- Petrochemical:Oil Refinery、Chemical Plant、Oil Field、Natural Gasstation、Oil DepotEtc.Flammable and Explosivelocation
- CoalcoalMine:Coal Mineunderground、Coal Preparation Plant、CoalChemicalEtc.WithExplosive GasEnvironment
- Electric Power & Energy:power plant、Substation、wind power generation、solarAbilitypower stationEtc.
- MetallurgySteel:SteelFactory、AluminumFactory、CopperFactory、MetallurgyWorkshopEtc.
- pharmaceuticalmanufacturing:Pharmaceutical Factory、pharmaceutical intermediateStructure、biologicalEngineeringEtc.
- Grain Logistics:grain reserve depot、Flour Mill、Feed MillEtc.Dust ExplosionHazardous Location
applicableHazardous Area
- Explosive GasEnvironment:Zone 1、Zone 2Hazardous Location
- Combustible DustEnvironment:Zone 20、Zone 21、Zone 22
- IIA, IIB, IIC explosive gas environments
- Temperature Group: T1-T6 (Maximum Surface Temperature ≤85℃)
Ordering instructions
ForensureyouorderProductmeet on-siteUseRequirements,Please inwhen orderingprovidefollowinginformation:
orderingDemandprovideinformation
- Product Model、specification And quantity
- Rated Voltage、Rated Current、Number of Poles
- Explosion-proof Markingrequirements
- Ingress Protection (IP) Ratingrequirements
- circuitquantity And EveryProductioncircuitCurrent、functionConfigure
- Inlet and Outlet Wire Methods
- Inlet and Outlet Thread Specifications and Quantity
- Enclosure Materialrequirements(Cast Aluminum/Steel Plate/Stainless Steel)
- IsnoneedAmmeter、Voltmeter、Indicator LightEtc.attachPlusfunction
Service Commitment
- FoundationCompanyProductstrictaccording toNational StandardProduction,Quality AssuranceRegular18ProductionMonth
- ProductOutputFactoryFrontAllAfter Strict Testing,Attached withhProductCertificate of Conformity、ManualEtc.documents
- can be based on user needsprovideTechnical Support And on-siteInstallationguidance
- provideComprehensive的After-sales Service,Warranty PeriodDomesticfreerepairreplacement