Bqs Bqw Flameproof Submersible Sewage Slurry Pump - China

BQS( BQW) Flameproof submersible sewage slurry pump

Summary

Comprehensive optimized and innovative designed in the aspects of hydraulic

model, sealing technology, mechanical structure and protection control.

Compared with domestic products, this product has the advantages of safe&

reliable, portable& practical, good sewage flushing performance, long serving

life and so on.

The whole series products are featured for reasonable spectrum

and convenient lectotype.

Model screening: optimized performance, double channel impeller, stable

operation without clogging, strong sewage flushing ability.

Pump has the

property of no overload( full head) , which means the input power will never

surpass the matched motor power in any working condition.

It applies to any

coal mine occasions, also can be multiple used.

Mechanical seal reforming: adopts independent serial mechanical seal and

double- end mechanical seal.

Structural optimization: structure design is good for mechanical sealing,

smooth operation, higher reliability; optimal design, more portable and

practical, low energy consumption.

Long- time running in anhydrous state.

IPX8 motor protection class, good submersible motor cooling effect, lower

temperature rise than ordinary motor, further improved durability, F class

insulation to improve motor serving life.

Application:

Suitable for coal mine places contains methane( commonly known as gas) and

coal dust with explosion danger, transportation for the mixed sewage contains

the insoluble solids centents like silt, slurry, gangue, cinder, and fiber.

Which can also be used for construcntion of building and bridge, sewage

discharge for hospital, resident area, public engineering, and road traffic,

transportation for sewage contains solid particles, waste water with long

fiber, and rainwater in small sewage treatment.

Working condition:

1 - Power: 380V or 660V, 1140V three- phase, 50HZ.

2 - Medium temperature: usually ≦400C, PH: 5- 9, medium density≤11N/ m3

3, Make the center of impeller as base, underwater depth no more than 3m.

4 - Unsuitable for strong corrosivity fluid.

5, Diameter of solid in the medium should meet the standard of MT/ T671- 2005 -

6, MT818.5- 1999 coal mine used fire- residant cable.

Characteristic

1, Pump impeller

On the basis of testing, carefully choose and match the pump body and impeller

to realize non- clogging, high efficiency, flat power curve, and non-

overloading.

The impeller is balance and precise, with small vibration and

running stable.

2, Motor

Specially designed submersible motor, IPx8 protection, F grade insulation

allows high temperatrue rise.

In normal temperature rise condition, the motor

insulation life prolonged.

While, the diving makes coolling effect good, the

actual temperature rise low, thus the motor insulation life is much longer.

3, Motor cooling

The motor dispatches heat through shell, if only the medium submerged half of

the sub- shell, the motor can run stablly and safely.

The more the sub- shell

is submerged, the better for motor cooling.

The mechanical seal is series

type.

There is a new type of double- end mechanical seal and pump adopts

sandwich strong cooling structure, which is our company’s patent.

At the

first mechanical seal, make the medium decompression to cool the motor, thus

the motor can be idle running and always keep the motor temperature rise below

40℃, greatly improves the machine’s serivice life.

Suitable for the

shallow water occasion, the pump can be idle running for a long time without

water.

Can be used in an unattended environment, save the labor cost.



4, Shaft seal

The shaft seal of motor adopts two independent series mechanical seal to form

2 reliable sealing line.

The first sealing line is in the pump medium, the

sealing surface will be more tight with the increasing of medium pressure,

which effectively prevent water entering the oil chamber.

The send sealing

line lies in the oil chamber to prevent oil entering the motor.

If the first

line failed( its working condition is worse than the second) , the second line

still can prevent water and oil entering the motor.

Bellow type mechanical

seal matched with innovative structure cavity, which greatly improve the

reliability of the shaft seal.

Under the normal working condition, it will

work without failure for more than 2000h.

5 - The oil chamber

The oil chamber is a barrier to prevent the medium entering the motor.

If the

first mechanical seal leaked, the oil chamber will buffer and prevent medium

entering the motor.

Lubricating and coolling the 2 independent mechanical

seals’ friction surface at the same time to make the mechanical seal work

more stable.

Besides, it can also takes away some heat of the lower bearing

and motor.

6, Bearing

The lower part of the double row angular touches the bearing to generate

strong carrying capacity, forms the reliable support for the motor pump shaft

with the upper deep groove bearing, produces radial force, axial force and

other forces to pump during working.

Have larger load margin to ensure the

unit work stable and serve a long time.

7, Cable and it’s seal

( 1 - ) Adopts MT818.5- 1999 coal mine used fire- residant cable, cable core

section designed according to the condition of 40℃ environmental temperature

and the motor works stable and long- term with full load power.

During

working, if the motor is not full load power and the environmental temperature

is below 40℃, its serve life will be longer.

( 2) There is seal between the cable rubber sleeve and motor cover to press

tight, which prevent the medium infiltrating the motor through the interface

of cable and motor cover.

8 The motor casting, upper cover, lower cover and other parts make up the

motor shell.

All the connection of the parts have reliable static seal.

Each

has been checked strictly by water pressure test to ensure there is no leakage

and perfectly safe.

9, Special handle

Set special handle for easy moving.

Absolutely forbidden pulling cable( or use

as string) when moving, thus the seal between cable and motor cover will be

loose and results in water enter the motor.

Even after pressed and fixed the

cable onto the handle, pulling the cable to move the sewage and sand

submersible pump is also forbidden.

Company Contact:

• Posted By: Zhengzhou Dragon Dream Pump Valve Equipment Co., L

• Phone: 8637186560516

• Address: No. 171, Zhongyuan Middle Road, Zhongyuan Dist., Z, Zhengzhou , China

• Email:

• Business Description: Dragon Dream Pump covers an area of more than 100mu, has equipment of more than 300 sets.
  
  Besides, it has a computer pump comprehensive testing center which reaches the national standard B level.
  
  With the advantages of high quality, high efficiency, energy saving, safe, reliable, and reasonable price, our company s Dragon Dream brand pumps are deeply favored by users and sole well in abroad markets.
  
  Covers various industry and fields of construction, environmental protection, electric, water supply, heating ventilation, mining, metallurgy, oil, chemical, medical, food, paper-making, agricultural irrigation and so on, Dragon Dream company has always provided equipment for national key projects for a long time.