1000mm Negative Pressure Duct Coating Cloth for Shanxi Coal Mine 1000mm Positive Pressure Duct Product Introduction

Description :

　　1、 1000mm mining negative pressure air duct fan usage:

　　Used for positive pressure ventilation of local fans in coal mines, tunnels, and underground areas;

　　2、 Structure, specifications and dimensions of 1000mm mining coated cloth negative pressure air duct

　　1000mm mining coated cloth negative pressure air duct varieties: The air ducts are divided into rubber coated cloth positive pressure air ducts, plastic coated cloth positive pressure air ducts, and rubber coated cloth positive pressure air ducts according to the coating cloth material.

　　3、 1000mm mining coating cloth positive pressure air duct ventilation * energy test report

　　Duct diameter mm, hundred meter wind resistance (ns2/m/8)

　　300 ≤811.0

　　400 ≤196.0

　　450 ≤122.0

　　500 ≤54.0

　　600 ≤24.0

　　800 ≤6.0

　　1000 ≤2.0

1000mm mining positive and negative pressure air ductNotes:

　　The appropriate specifications of air ducts, elbows, and other components should be selected according to the specific conditions of the underground tunnel and the requirements of the fan air volume. The suspension of the air duct should strive for straightness and ensure that each suspension buckle is evenly stressed to avoid the weight of the air duct being concentrated on some suspension buckles.

　　Positive pressure air ducts and negative pressure air ducts used in coal mines are flame retardant, anti-static, and wind resistant. After wind pressure resistance testing, the air ducts must not produce phenomena such as detachment, tearing of coating cloth, or opening of joints. The expansion rate of the diameter of the air duct shall not exceed 3.0%.

　　Generally, when the ventilation length is within 200m, it is advisable to use a mining air duct with a diameter of 400mm; When the ventilation length is between 200-500m, it is advisable to use a mining air duct with a diameter of 500mm; When the ventilation length is between 500 and 1000m, it is advisable to use a mining air duct with a diameter of 600mm; When the ventilation length is over 1000m, it is advisable to use a mining air duct with a diameter of 600mm or more.

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• 1000mm negative pressure air duct