This BQS series sand draining submersible pump is suitable for the tunnelingsite which has a risk of gas explosion. It can be use for draining of waste water which is mixed with sands. It can also be used for emergent water drainage in serious flood disaster. The flow rate is selectable from 20m3/h to 1000m3/h, and flow head from 30m to 850m. The motor power can be from 100kW to 1150kW, and breakdown voltage from 3000V to 6000V. The pump is easy to install and endurable to explosion.
The type of the pump’s anti-explosion is explosion proof (flame proof). The sign is “EXxdI”
The standard for this product is “MT/T 671-2005: explosion proof submersible pumps for coal minerals”.
Structure Feature:
The BOS explosion proof submersible sand-drainage pump is formed by the pump body and the YBQSmotor. The motor isexplosion proof, water filled, submersible motor for minerals. The pump is under the motor.
The installation of the pump can be vertical, inclined, or horizontal.
The motor is YBQS explosion proof mineral motor, and the winding wire is covered by nylon piece, which makes it water proof. The motor chamber is filled with clean water to cool the motor to ensure a long service time.
The seal between the pump and the motor is mechanical and framework oil seal, which will prevent the motor cooling liquid from touching outer medium.
For inclined installation, the motor is first axially connected with pump, and then both parts are installed in one seat. This will ensure a high axial connection between the motor and the pump.
If needed, the motor-pump combination can be installed a cooling cover. This cover will make sure the heating part inside the motor to be cooled efficiently. As a result, a long motor service period is reached.
The pump body is made from wearing proof high hardness materials. Different material can be selected according to the work environment. Even stainless steel can be selected for the pump.
According to the requirement ofGB/T4942.1-2002, the IP protection level for the pump is IPX88.
The quota of this YBQS motor is for the successive service time (S1).
No mineral oil is added for the operation, so the water quality is protected.
Work condition and environment:
Power supply: 3 phase AC power; Frequency: 50Hz; Voltage: 380V/660V/1.14kV/3kV/6kV (tolerance ±5%).
The solid ratio in the medium should be less than 0.01% (volume ratio). Maximum sand diameter should be less than 3cm.
Medium density should be less than 1.02x103Kg/m3.
Medium pH value should be 6-9.
Medium temperature should be less than 40℃.
Inlet should be under the water (less than 70m deep). But the motor should not be left in the sand.
Explanation on product series number:
pump
explosion-proof mineral pump
Q: submersible
S: pump drainage liquid. S stands for sands.
80: Pump nominal flow rate. Unit: m3/h.
400: Pump water head. Unit: m.
6: Pump level number. No number for single level.
200: Motor nominal power. Unit: kW.
s: Motor feature: water filled.
motor
Y: three-phase asynchronous
QS: water filled, operated under water
Voltage and power level code
motor level number
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