Test Principle:

The specimen placed vertically under the specified flame conditions is ignited with a small flame ignition source, and the combustion performance of the specimen is comprehensively evaluated by measuring the continuous combustion and ignition time of holding the open flame after the flame is removed, and blowing the air on the specimen 60 seconds after removing the flame, observing the combustion behavior and measuring the continuous ignition time.

Overview: This equipment uses a small-scale flame (gas blowtorch/alcohol blowtorch) test method to evaluate the reaction of conveyor belts in fire, and is suitable for evaluating the combustion performance of textile core conveyor belts and steel wire core conveyor belts. The ability to resist propagation combustion in the case of flame combustion, and the vertical combustion behavior of the specimen is evaluated by measuring the afterflame, the combustion range, and the dripping of combustion particles.

Scope of application: The conveyor belt flammability test instrument is suitable for the combustion performance test of fabric core conveyor belts and steel wire rope core conveyor belts used in chemical, coal, metallurgical and electric power industries. It is used to evaluate the reaction of the conveyor belt in a fire.

Technical performance of the equipment:

Nozzle inner diameter: 9.6mm;

Air supply mode: automatic air supply of fan, air supply time 60S;

Supply air speed: 1.5M/S;

Electronic anemometer: test range 0~8M/S

TES thermometer: measuring range 0~1300°C, accuracy 0.1°C

Automatic blowtorch propulsion and lifting system;

Blowtorch angle: 45 degrees from horizontal

Flame height: 170±10MM

Spitfire method: automatic electronic ignition

Burning time: 0 ~ 99.99 seconds can be set arbitrarily, and the accuracy is ±0.01 seconds.

Flamed and flameless time timer: 0~99.99 seconds, accuracy: ±0.01 seconds;

Fuel: 5% (V/V) methanol and 95% (V/V) ethanol blend (customer-formulated);

Test chamber volume: 0.5m3

Carton size: L1000 mm× W600 mm× H1150mm

Weight: 40KG

Power supply: AC220v; 50Hz； 50W；

Material: All made of SUS 304 stainless steel

Note: The angle of the blowtorch can be adjusted, and when it is used as a horizontal combustion test, the blowtorch is adjusted to 45°; When used as a vertical combustion test, the blowtorch is adjusted to 90°.

Combustion chamber:

3.1 Box: 0.5m3, processed by CNC machine tools, the arc shape is beautiful and generous. Premium SUS304

Stainless material/baking paint, with the characteristics of beautiful appearance, anti-rust and anti-corrosion.

3.2 The top of the box is equipped with an exhaust and smoke exhaust system, which can discharge the exhaust gas to the outdoors when the test is completed; During the test, the system is stopped.

3.3 The front of the box is equipped with a tempered glass observation window that can be sealed during the test, which is convenient for observing the test situation.

Burning blowtorch:

4.1 Gas Bunsen lamp, fully in line with the requirements of GB/T3685-2009, the inner diameter of the lamp is 10mm.

4.2 Outer diameter of the flamethrower: Ф11.5±0.1mm, inner diameter of the flamethrower: Ф10±0.1mm, the nozzle is far from the air

The inlet height is 200±10mm

4.3 Blowtorch angle: 45 degrees from the level

4.4 Flame Height: 180±20.