Introduction

The BQG series of mine diaphragm pumps produced by our company adopts, absorbs and improves the most advanced production technology and technology of pneumatic diaphragm pumps in the world. This product is specially designed for coal mines and has traditional submersible electric pumps, mud pumps, impurity pumps, All the functions of the flexible shaft pump are a revolution of the traditional mine water pump. The key is to completely solve the safety problem of traditional water pump,which can provide high delivery speed even under low air pressure and is compatible with a wide range of materials, and has an anti-stall design, modular air motor / fluid part.

They can be applied in underground mines to discharge clean water or sewage containing solid particles (volume concentration less than 2%), and also be used in non-coal mines and other occasions with similar conveying media.

Working and environmental conditions

1. Compressed air for power, the pressure should be in the range of 0.2～0.7 Mpa;

2. The temperature of the conveying medium does not exceed 40℃;

3. The PH of the conveying medium is in the range of 4～10;

4. The maximum diameter of solid particles does not exceed 6-9mm, and the volume concentration does not exceed 2%;

5. Ambient temperature: -20℃～50℃;

6. Ambient humidity: ≤95% (when the ambient temperature is +25℃);

7. Atmospheric pressure: 80kPa～106kPa;

8 .Suitable for the dangerous places of coal dust and methane explosive gas in coal mines, where there is no corrosive gas that destroys the insulation.

The extremely storing and transporting conditions diaphragm pump can withstand

1. High temperature: +80℃;

2. Low temperature: -20℃;

3. Average relative humidity: 95% (+25℃);

4. Vibration: 50m/s2;

5. Impact: 500m/s2.

working principle

The pneumatic diaphragm pump uses the pressure difference in the air chamber to alternately generate suction liquid pressure and positive liquid pressure in the liquid chamber. By controlling the valve switch can ensure the positive flow of the liquid. After ventilating, the pump starts to run and continues to work to make sure the required pressure remains the same. The pump will increase and maintain the delivery pipe pressure, and will stop working when the maximum delivery pipe pressure (or distribution valve  is closed)  reached, and then resume pumping when needed.

Installation and operation guidance

1. The upper port of the pump is the water outlet, and the connection of the lower suction port must be tightly tied.

2. The material supply pipeline at the entrance should not be too small, otherwise it will be easy to block, and do not use hoses that are easy to collapse.

3. Fix the diaphragm pump feet on a proper surface to prevent vibration damage.

4. If the diaphragm pump does not start within a few hours, disconnect the gas supply.