Product Definition
Negative pressure weighing room composition structure:
Hood
Made of 304 stainless steel, it has excellent pressure resistance, corrosion resistance and impact resistance, ensuring the stability and long service life of the equipment.
Air intake system
Including components such as air inlet and primary filter, the main function is to introduce external air and perform preliminary filtering.
Air outlet system
Composed of fan, high-efficiency filter and air outlet, etc., responsible for discharging the filtered clean air to maintain the negative pressure environment in the hood.
Adjustment system
Equipped with inverter, touch screen and other equipment, which can control the start and stop of the fan, adjust the fan frequency, and adjust the wind speed required in the working area to meet different usage requirements.
Sealing system
Ensure that the hood is tightly connected with the relevant parts to prevent the leakage of harmful substances and the spread of dust, thereby providing the best protection effect.
Monitoring system
Equipped with dust particle monitoring system and pressure difference sensor and other devices to monitor the dynamic cleanliness and filter pressure condition in real time, and alarm for abnormal conditions such as wind speed, pressure difference, cleanliness, etc.
Application
Pharmaceutical industry
Used for weighing and packaging of pharmaceutical raw materials, intermediates and finished products to ensure the quality of drugs, prevent pollution and cross-contamination between different drugs.
Microbiological research
In microbiological experiments, negative pressure weighing room can effectively prevent the diffusion of microbial aerosols generated during the experiment, thereby protecting the safety of experimenters and laboratory environment.
Food processing
Ensure the hygiene and safety of food additives and ingredients during the processing process, prevent dust from contaminating food, and ensure food safety.
Chemical industry
Used to weigh hazardous chemical reagents and samples with volatility, corrosiveness, etc., to prevent reagent volatilization and contamination, ensure the safety of experimenters, and ensure the accuracy of weighing results.
Parameter Table
| Inner Size W*D*H (mm) |
1500*1500*2600 | 1900*2400*2600 | 1500*1700*2600 |
| External Size W*D*H (mm) |
1400*1000*2000 | 1800*1800*2000 | 1400*1000*2000 |
| Filter Grade | G4(EN779) F8(EN779) H14 (EN1822) |
G4(EN779) F8(EN779) H14 (EN1822) |
G4(EN779) F8(EN779) H14 (EN1822) |
| Operational efficiency | 180W | 240W | 680W |
| Box material | SUS304 | SUS304 | SUS304 |
| Power supply | AC 220V/1PH | AC 220V/1PH | AC 220V/1PH |
| Cleanliness Level | ISO Class5 (Level 100) |
ISO Class5 (Level 100) |
ISO Class5 (Level 100) |
| Average wind speed | 0.36-0.54m/s | 0.36-0.54m/s | 0.36-0.54m/s |
| Support Customized Size | |||
Weighing Booth Application
Advantages
The work area adopts an integrated arc design, with no cleaning dead corners, dust is not easy to accumulate, and it is easy to clean and maintain.
The unique patented differential pressure balance design ensures that the pressure difference in the background area is stable.
The double-layer negative pressure structure is adopted to effectively prevent cross contamination.
The use of wind curtain isolation technology allows smooth entry and exit of personnel and materials, eliminating sanitary dead corners.
The one way airflow design is excellent, dust does not spread outward, and has the effect of capturing with the flow.
Comprehensively ensure the safety of operators and the cleanliness of the background area.
Production Flow Chart
Working Principle
Formation of negative pressure environment: The negative pressure weighing room is connected to the outside world through vacuum pumps and other equipment. The vacuum pump power can be adjusted to form a negative pressure environment inside the hood, that is, the air pressure inside the hood is lower than that outside. This design can effectively prevent the outside air from flowing into the hood. At the same time, the air inside the hood can be discharged through the exhaust system, thereby avoiding the entry of pollutants such as dust and particulate matter during operation.
Air filtration and purification: The air entering the hood first passes through the primary filter to remove large particles of dust. Subsequently, the air enters the high-efficiency filter for processing, which can remove more than 99.97% of the particles, ensuring that the discharged air is highly clean and avoiding secondary pollution.
FAQ
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