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  • Bqs Bqw Flameproof Submersible Sewage Slurry Pump - China

    price: contact company for price

    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:


    • Phone: 8637186560516

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

    • Email: Email


    Published date: March 16, 2016 -

    • 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.

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