Technical measures for local ventilation of heading face

The boring work surface is generally not equipped with fresh air by the ventilator installed on the ground. In order to make the boring work surface have enough fresh air for the staff to breathe, dilute and eliminate the gun smoke, dilute and eliminate toxic and harmful gases, Heat and water vapor, etc., install a local fan in the roadway at a certain distance from the heading face, and connect the air duct to the air outlet of the local fan to send the wind to the heading face. The local ventilator is responsible for the important task of supplying air to the heading face all day and night. Therefore, each local ventilator must be managed by the designated personnel, and the following management system should be strictly implemented.

1. It is necessary to ensure that the local ventilator is always in operation. No matter whether the boring working face is normally produced or handed over, it is not allowed to stop the wind at will, and it is necessary to ensure sufficient air volume for the boring working face.

2. When the wind is stopped due to maintenance or power failure, the personnel must be evacuated to cut off the power supply of all equipment in the working face. Therefore, the local ventilator and the electrical equipment in the heading face must be equipped with wind power locking devices.

3. Before the ventilation is restored, it is not allowed to send electricity and enter the work. Before the ventilation is restored, the gas must be inspected. If the gas concentration in the airflow within 10 meters near the local ventilation machine and the switch site does not exceed 0.5%, the local fan can be manually activated. .

4. Press-in local ventilator and starting device must be installed in the air inlet roadway, and the air return port should not be less than 10 meters to avoid circulating wind.

5. The start or stop of the local ventilator must be handled by a special person. Other personnel are not allowed to start or stop the local ventilator without permission.

6. The air duct must be hung on the side of the roadway. In the roadway, the shed, the cart, and the material handling equipment should not be damaged. When the gun is fired, the air duct cannot be broken. The air cylinder should be hung, straightened, and sturdy. The corner should be gentle. Do not wrinkle the air duct. Use the same specifications of the air duct.

7. After the local ventilator is started, the blades will rotate very fast. Do not put your hands in, or stuff the wooden sticks and other things into it.

8. If the same tube is found to be broken, report the ventilation personnel immediately so that it can be repaired immediately to avoid air leakage and affect the ventilation of the driving face. Everyone in the well should take care of the local ventilator and the same cylinder, because it is the health, personal safety and safe production of the boring face and related personnel, so everyone should pay attention to the operation of the local ventilator and find abnormal conditions. Immediately report the ventilator or mine dispatch room for immediate disposal.

"Water treatment" refers to the process of removing some harmful substances in water that are not necessary for production and life through physical, chemical and biological means.It is the process of settling, filtering, coagulation, flocculation, corrosion inhibition and scale inhibition of water for specific purposes.

Common Water Treatment Products are as follows:

1.Tube Settler:

Also named Hexagonal honeycomb packing.The hexagon honeycomb packing lamella plate clarifier tube settler is very suitable in all different clarifiers and removing sand. It is regarded as universal water treatment equipment in water supply and drainage engineering. It has wide application, high handling efficiency, small area, etc.

It is suitable in removing sand in inlet, industry and drinking water precipitation, separation in oil & water.

The material of tube settlers are PP and PVC.And the size also could be customized according to your requirements.

Tube Settler or Hexagonal Honeycomb Packing

2.Mbbr Media:

Bio filter media which is used in MBBR Process, which is one of methods used in the reduction of the nitrogen from the waste water efficiently. It mainly uses high surface area media to provide waste water treatment at a faster rate. It is backed with hi-tech aeration systems and has low energy requirement.

MBBR Media is a new kind of suspension carriers. It modified polymeric material with the promoted additions of bio-enzyme, it improves the enzymatic catalysis, so it possess excellences of larger specific surface, being easy to multiply bio film, unease to fall off, high denitrification, good hydrophile, high biological activity and so on.

Types of MBBR Media,PE Ball

3. Bio Ball :

The bio ball is idea for external and pressurized filters in aquarium tank, pond filter and fish farm water treatment.Bio balls provide large living area for beneficial bacterial to thrive , placed in a filter pond or tank, they efficiently reduce ammonia and nitrite to help maintain healthy aquarium tank, pond or fish farm water conditions and over all well -being of pond or fish farm fish and plants. We also can design special demand as you need.

Bio Ball with cotton bio ball without cotton

4.Fine Bubble Diffuser/Fine Bubble Aerator:

Fine Bubble Diffuser is a necessary equipment for air blast aeration aeration.The selection of aeration equipment not only affects the effect of sewage biochemical treatment, but also affects the occupation, investment and operation cost of sewage farm.The main types of micro-hole aerators are: diaphragm type micro hole aerator, pipe aerator, disk aerator, micro-hole ceramic aerator, etc.

Diaphragm type micro orifice aerator is the most new type of aeration device. It has small aeration bubble diameter, small gas-liquid interface diameter, large gas-liquid boundary area, and uniform bubble diffusion, which will not cause hole blockage and strong corrosion resistance.

Fine Bubble Diffuser/Aerator

Water Treatment Products

Water Treatment Products,Water Purification Systems,Water Treatment Systems,Boiler Water Treatment

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