Product introduction
MMB series mine closed door is used in the passage from underground main substation and main drainage pump house to the bottom of the shaft yard, which is easy to close to prevent sudden immersion of water. The pressure of the closed door is 98kpa. The closed door leaf is assembled and welded by flat steel plate, well shaped rib plate and ring beam. The door frame is composed of channel steel and I-beam. The tension device is wedge-shaped sliding block. The door pivot is supported by rolling bearing. Closed door is a kind of door that can increase air tightness. The materials of the closed doors are made of wood and steel. The key component is the sealing device.
product mix
1. MMB series mining airtight door leaf is made of flat steel plate, well rib plate and ring beam.
2. The door frame is composed of channel steel and I-beam.
3. The tension device is wedge-shaped sliding block.
4. The door pivot is supported by rolling bearing
Model example: serial number, model and specification
1 MMB1.4*1.8 1123
2 MMB1.6*1.8 1194
3 MMB1.8*2.0 1319
4 MMB2.1*2.0 1430
1. Atmospheric pressure: 80 kPa ~ 110 kPa;
2. Ambient temperature: - 30 ℃ - 40 ℃;
3. Average relative humidity ≤ 95% (25 ℃);
4. Underground coal mine with explosive mixture of methane and coal dust;
5. There is no gas that can corrode and destroy the metal shell and electrical insulation;
6. Water pressure: 0 ~ 3.5Mpa.
Current location：