Products
FQW (Former BQF) pneumatic immersible pump for mine


Product Description:

FQW (Former BQF) pneumatic immersible pump for mine is a new product developed by our company. Coaxial connection between rotor and pump was adopted in this product, with an submersible vertical structure. This product is made according to Q/JNAT001-2010. The pneumatic submersible pump for mine is compact, which is easy to move, install, dismount and repair. A high efficiency and energy-saving hydraulic model is used in this pump, with a special impeller design. This pump has strong wastewater transmission capacity, high flow rate, high head, etc. FQW pumps apply to water discharge containing coal dust, mud and sand in methane and coal dust-bearing explosive work place, as well as any workingplane in the coal mine. The pump can operate safely and reliably and improve air quality effectively.

Work condition:
a) Ambient air containing methane and coal dust;
b) Atmospheric pressure (0.4~0.7) MPa;
c) Water pH between 4 and 10;
d) Water containing over 2% solid impurity;
e) Water density not exceeding 1.1x103kg/m³
f) Ambient temperature (5~40) .


Structure and work principle:

The pneumatic immersible pump for mine consists of pump body, air motor and flow part.
1. Pump body: It includes the upper and lower chambers. Air is isolated from water by sealing ring. The sealing ring is spring seal. The high pressure air and water flow to the inner walls of the upper and lower sealing rings in order to improve the sealing effect by their swelling.
2. Air motor: It consists of rotor, turbine, upper and lower cylinder, bearings, etc. The compressed air strikes the turbine so that the turbine rotates the rotor at high speed.
3. Flow part: It consists of water wheel, sucking port in the pump cover, pump seat, etc. The water wheel is installed on the rotor shaft in the lower chamber. The compressed air flows from the air inlet. The rotor drives the water wheel. The water in the water wheel is compressed to the vortex path before discharged through outlet pipe.


 

Water pump model

Rated flow
(m³/h)

Rated lift
(m)

Work air pressure
(MPa)

Air consumption

Mass
(kg)

Outer dimension
(mm)

FQW20-25/W
20
25
0.5
4.5~5
30
347274462
FQW70-30/W
70
30
0.5
4.5~5
32
347274462
FQW20-40/W
20
40
0.5
4.5~5
34
329274495
FQW40-20/W
40
20
0.5
4.5~5
31
347274462
FQW25-50/W
25
50
0.5
4.5~5
35
329274495
FQW30-18/W
30
18
0.5
4.5~5
35
329274495
FQW50-25/W
50
25
0.5
4.5~5
32
347274462
FQW48-12/W
48
12
0.5
4.5~5
31
347274462

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