Structure Feature:
This BQS series sand draining submersible pump is formed from a submersible three-phase asynchronous motor and a pump body. The two parts are connected coaxially. The motor is YBQ explosion proof dry style motor. There is a axial pressure balance device between the motor and the pump. The device is made from a special material which is endurable for high pressure and abrasion. The device is helpful to decrease the axial pressure. The leaking water from the device flows through some pipes and finally drops to the motor cover, which cools the motor by decreasing its operation temperature. This pump can work in a dry environment for a long time. The outlet inclined angle can be set to be any value.
The pump is a stand style, and the impeller can be a single level or multiple levels, which makes it a good quality to allow the large particle passing fluently.
The rotating part of the motor is formed by precise annular ball bearing or annular contact ball bearing. The feature is that it can rotate flexibly and it is endurable to axial force and radial force in a permissible range.
The type of the pump head is either radial guide vane or spiral water pressure. This makes the pump’s hydraulic head is high and easy to install and maintain.
The insulation level of the motor is F. And the IP level is IPX8 as required by the GB/Y4942.1-2001 standard.
We can provide a safety control box according to customer’s requirement, which will prevent the pupm’s electrical leakage, overloading, and overheat.
Brief Description of BQS Pump：
This BQS series sand draining submersible pump is strictly complied with the P.R.China’s standard “MT/T 671: explosion proof submersible pumps for coal minerals”. It is suitable for the tunnelingsite which has a risk of gas explosion. It can be used for draining of waste water which is mixed with sands. The pump has been installed with a cooling system, which makes it possible to work under water or in a dry environment.
The pump’s sealing part and consuming part are made from high hardness alloy, which makes the product a long service life.
The pump has a structure of integrating pump with the motor, which makes it easy to install and wear resisting to sand. This structure also results an excellent explosion proof feature.
Work condition and environment:
The pump works well in all mineral tunneling sites, waste water under deep well, coal preparation plant, engineering water drainage, etc.
It is suitable for an environment with methane or with coal particle mixed gas. The drainage medium is allowed to contain floating coal particle, sand, small stone, or mud.
Frequency: 50Hz; Voltage: 380V, 660V or 1140V (tolerance±5%); 3 phase AC power.
The water depth for the motor is allowed to be less than 5 meter.
The temperature of drainage medium should be 0-40℃。
In the drainage medium, the volume of solid particles should be less than 2%.
The PH value of drainage medium should be 4-10.
The maximum diameter of the solid particle should be smaller than 50% of the minimum dimension in the flow’s cross section.
Explanation on product series number:
The pump series number is formed by the
B: explosion-proof mineral pump
Q: submersible
S: pump drainage liquid. W stands for waste water, S stands for sands. No letter for clean water.
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.
Product Parameters:
operation chart
Series Number
Flow rate
Water head
Speed (rpm)
Power
Voltage
Current
Diameter
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