Closed doors, high-quality closed doors, low-cost closed doors, closed doors are selling well

  English: sealed door
Closed door is a kind of door that can increase air tightness

The materials of closed doors are wood and steel
The key component is the sealing device

“ Qkb air bag quick sealing ” It is a rapid plugging technical equipment used for fire rescue, temporary plugging local gas accumulation or over limit, and controlling local high-temperature fire points
The air bag type quick sealing is the first in China (patented, patent No
: ZL 97200747
4), which is of great practical significance to improve the disaster resistance of the mine and reduce the heavy economic losses and casualties caused by the mine fire
The product is made of anti-static flame-retardant rubber material
It has the characteristics of light weight, easy to carry, simple operation and fast construction speed

Structure 1
The door leaf of the closed door is assembled and welded by flat steel plate, well shaped rib plate, ring beam and other components

2
The door frame of the closed door is a frame structure composed of channel steel and I-steel

3
The tensioning device of the closed door adopts a wedge-shaped slider

4
The hinge of the closed door is supported by rolling bearings

Main features: 1
The operation is simple and easy for the rescue team to master
High pressure nitrogen cylinders can be used for inflation, and leather tigers can also be used for manual inflation;
2
Light weight, easy to carry; It solves the problems of difficult transportation, time and labor consumption of traditional sealed materials;
3
The construction speed is fast
Generally, it takes only 5-7 minutes, and the fastest is only 4 minutes to complete the temporary closure;
4
The sealing effect is good, the air leakage rate is low, and the air tightness of the air bag is good, which can be kept for more than 24h without leakage;
5
It has a wide range of application and can be used in roadways with different section shapes and different support forms
It is universal and can be large or small;
6
The rescue team members can carry out practical training in any underground roadway at ordinary times;
7
The airtight air bag has the function of skeleton support and sealing, and does not need temporary support;
8
The air bag can also be used as a temporary air door for temporary air regulation

9
Air bag sealing can be used repeatedly, which can save a lot of wood
Tangshan Weitian
Parameter model example: serial number model specification
　　1 MMB1
4*1
8 B85-373
　　2 MMB1
6*1
8 B85-373
　　3 MMB1
8*2
0 B85-373
　　4 MMB2
1*2
0 B85-373