Year1
- 规格：
- MF1600*1800
- 材质：
- 钢板
- 厂家：
- 山东众安
In terms of damper opening force, the pressureless damper has two small dampers for each group of dampers. Composed, when opening and closing one of the dampers, regardless of the opening and closing direction, the other damper opens and closes in the opposite direction. At this time, the pressure is released and it is easy to open and close. The force has nothing to do with the size and direction of the wind pressure. The old damper door leaves are bulky. It is difficult to open when the negative pressure in the tunnel is large, and it requires people to open it at the same time.
Each set of pressure-free dampers consists of two sets of dampers, with two-way wind isolation. There is no need to install a reverse damper. The old style dampers are affected by the negative pressure in the tunnel, so a reverse damper must be installed to prevent the wind from flowing backward. When used in the direction, each group has two front and back dampers, which is composed of two groups of four dampers.
The pressureless damper is sealed on both sides and has small air leakage. In order to reduce the opening pressure, old-fashioned dampers sometimes install a small damper above the damper, which increases the air leakage of the damper.
The pressureless damper system is simple, sturdy and durable, and will not damage the damper during the opening process. Because the old damper is difficult to open, people often use heavy objects to pry or plate the damper. It is easy to cause damage to the damper.
The pressure balance principle used in the pressureless damper closes smoothly, safely and reliably. Each group of pressureless dampers has two doors. When opened, the cross-sectional area is larger than that of the single door of the old style damper. It is easy for pedestrians, When passing materials, it is not easy to hit the damper, and the old-fashioned damper is difficult to open due to the high pressure of the damper, which may easily cause accidents of pinching pedestrians. The safety performance is worse than that of the pressureless damper.
The entire material of the pressureless damper is made of iron products and has good fire resistance. It can effectively block possible fires in the belt conveyor lane and prevent fire and harmful gases from entering other lanes. It also has anti-corrosion and moisture-proof properties. It is better, has high strength and is not easy to deform. The door legs of the old style damper are made of square wood. They have poor anti-corrosion and moisture-proof properties. They are easy to break after long-term use and need to be replaced.
Under the action of the heavy hammer, the pressureless damper can realize mutual locking between the two dampers, which will not easily cause the problem of air flow short circuit.
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