Sealing Performance of Grain Silo

Poor sealing performance of grain silo can lead to an average annual loss of 5%-15% of grain due to mold. HKB enhances silo airtightness through sealing technology. This article comprehensively analyzes solutions to improve sealing performance from theory to practice.

3 Core Indicators of Sealing Performance of Grain Silo

Airtightness Level

Level  Pressure Drop Standard (Pa/h) Application Scenario  HKB Solution

Grade A   ≤0.5       High - value grain storage  Laser welding + double - layer gasket

Grade B  0.5 - 1.5       Routine storage       Modular seam sealing technology

Grade C  1.5 - 3.0  Temporary turnover warehouse Economical rubber strip sealing

Waterproof and Moisture - proof Performance

Test method: Simulate heavy rain (100mm/h) continuously flushing the roof seam for 2 hours. No water stains on the inner wall is qualified.

HKB innovation: The roof uses a combination of water - guiding grooves and elastic sealant, passing the IP66 certification.

Insect and Rodent - proof Performance

Seam width ≤1.5mm (international grain silo rodent - proof standard). HKB uses patented interlocking door design (seam <0.8mm).

HKB's Technologies to Enhance Sealing Performance of Grain Silo

3D Curved Surface Laser Welding Process

Weld seam smoothness error ≤0.1mm. Compared to traditional arc welding, airtightness is improved by 400%.

Intelligent Inflatable Sealing System

Arrange pressure - sealing strips at key parts such as silo doors and inspection openings:

Automatic inflation pressure: 20 - 35kPa (dynamically adjusted based on the temperature and humidity inside the silo)

Can maintain effective sealing for 72 hours in emergency situations.

Modular Silo Body Sealing Design

Original "tenon - and - mortise" joint structure:

Each module is pre - fitted with EPDM rubber sealing strips (with a service life of 25 years against aging)

After assembly, pressurize to 200kPa for testing to ensure overall sealing.

IoT Leakage Monitoring System

Deploy over 200 sensors for real - time monitoring:

Pressure change sensitivity: ±5Pa

Temperature gradient abnormality early warning (alarm triggered when temperature difference >3℃/m³)

Testing Sealing Performance of Grain Silo

Positive Pressure Test

Close all openings and pressurize the silo to 500Pa.

Record the pressure drop over 10 minutes (HKB equipment accuracy ±0.1Pa).

Calculation formula: Leakage rate = ΔP/(t·V) (unit: Pa/h·m³).

Infrared Thermal Imaging Detection

Detection accuracy: A temperature difference of 0.03℃ can identify a 0.2mm crack.

HKB service: Provide an annual sealing health report (including thermal image analysis).

Smoke Tracer Detection

Release tracer gas (sulfur hexafluoride) under negative pressure and use a mass spectrometer to locate leakage points (sensitivity 1ppm).