Dust removal equipment is the use of downhole dust pipe and compressed air pipe, add certain additives in the water, the introduction of wind pressure, through the special equipment, complete the suction -- -- -- mixture -- -- foaming and a series of process flow, foam, through the distributor, nozzle bracket components sprayed on the dust source. Foam ACTS on dust by means of good covering, wetting and adhesion, which can effectively reduce the dust concentration on the mining face, greatly improve the working environment of the mining face, improve the working efficiency of underground workers, and effectively reduce the incidence of pneumoconiosis among front-line workers.
Compared with other wet dust suppression methods, the water consumption can be reduced by 50% ~ 80%, and the dust suppression efficiency is 3 ~ 5 times higher than spray spraying. Foam dust suppression has the following characteristics:
1. The foam can cover the dust source without any space and fundamentally prevent the dust from spreading outward;
2. After the formation of liquid foam, the overall volume and total surface area increase significantly, which increases the collision efficiency with dust and purifies the working environment of underground mining face;
3. The foam liquid film contains special additives, which can rapidly change the wetting performance of dust and increase the rate at which dust is wetted;
4. Foam is very viscous, and dust and foam will be quickly adhered to after contact.
5. Restrain the spark generated by the cutting tooth of roadheader and the action of coal and rock, and prevent the resulting explosion accident of gas and coal dust.
6, small water consumption, avoid water mist dust removal caused by the large water consumption of the comprehensive excavator settlement, improve the working efficiency.
7. The dust removal efficiency is high, which greatly improves the line of sight of the roadheader driver, eliminates the potential safety hazard, and improves the section quality and production efficiency.
