Tag Archives: Centrifugal Pump Manufacturer

DCYZ series explosion-proof submersible pump is applicable to dangerous sites which contain methane, coal-dust explosion environment,also application for transporting rain water and sewage containing solid particles at constructions, hospitals, residential areas, municipal projects, roads, factory sewage, etc.

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Outstanding Features:

1.Model special features: Optimised performance, smooth and reliable operation without blocking, strong sewage desilting capacity, no overload throughout whole head range, input power does not exceed the matching motor power under any condition. Applicable for various occasions under mine, one equipment serves multi-purpose operation.
2.Mechanical seal improvement: Utilises independent cascade mechanical seal and double-end faces mechanical seal.
3.Optimised structure: Structural design promotes mechanical sealing, smooth operation, high reliability; optimised design, portability and practicality, low energy consumption, long time operation under no water condition.
4.IP×8,IP68 motor protection grade, good submersible motor cooling performance, operating temperature is lower than that of other motors, improved durability. F grade insulation gurantees longer service life of motor.

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Application used;

DC Submersible slurry pump is centrifugal pump.
DC Submersible slurry pump can be treated as shale shaker feeding pump.
DC Submersible slurry pump is vertical type save much space. Furthermore, it also can be decanter centrifuge feeding pump.
DC Submersible slurry pump impeller is semi opening type this provides high efficiency. The impeller material is carbide alloy make pump more durable decrease maintenance cost.

If you have any requirements please contact DC office freely.

In recent days, we delivered four centrifugal pump to India, the motor is 55kw, head is 45m. It is used to dispose waster fluid. The manufacturing times of the four sets are 100 days, now we have successful delivered.

centrifugal pump

Centrifugal pump principle

Centrifugal pump is combined with impeller and casing. Drilling fluid will be sucted from impeller side, when impeller rotates at high speed there will be centrifugal force and gain power or pressure. Then fluid flow through impeller path will produce pressure out. The drilling mud will come out under certain pressure.

Advantages of centrifugal pump 

The bearing pedestal, axles and other components of all models centrifugal pump are universal,
The main components are all wear resistant ductile iron and resin sand to manufacture, the using life is long and nice exterior.
The surface of centrifugal pump all use sand blasting treatment, the paint uses the anticorrosive epoxy zinc rich paint and high pressure airless process construction.
All bolts, nuts, flat gaskets and split cotter pin must be galvanized but don’t have chromeplate and nickel plating.

sand pump

DC Centrifugal pump has been exported to many overseas countries. The reliable quality and cost effective solutions has helped GN Solids Control to win many orders of centrifugal pump from the world. With our branches and partners around the world, clients can get DC centrifugal pump and parts from local warehouses to save delivery time.

Centrifugal pumps (SB sand pumps) are designed and engineered to handle abrasive, viscous and corrosive drilling fluids or industrial slurry. They have been proved and being in operation on land and offshore drilling rigs around the world. Please contact us for more details in order to make you customized.

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Features of the sand pump:

1. Pump housings are heavier and stronger to outlast conventional pumps
2. The impeller is designed to reduce turbulence, lower radial and thrust loads, and provides a smooth flow of fluid through the pump
3. The SB series shaft has a greater diameter to provide heavy-duty performance with minimal shaft deflection.
4. Bearings are designed for easy maintenance.
5. Stuffing box cover combines the functions of wear plate and stuffing box into a one-piece replacement unit.

Applications of the sand pump:

1. Drilling mud mixing and shearing operations.
2. Feeding pump for desander and desilter.
3. Drilling mud transfer pump
4. Supercharging, mud cooling towers, wash down.
5. Chemical, refinery, industrial, construction and agricultural applications.

Contact DC Solid control to get more information about the sand pumps.

Centrifugal pump is the most used pump type in the world. The principle is simple, well-described and thoroughly tested. There is a wide range of variations based on the principle of the centrifugal pump and consisting of the same basic hydraulic parts. The majority of pumps produced by DC are the centrifugal pumps.

An increase in the fluid pressure from the centrifugal pump inlet its outlet is created when the pump is in operation. This pressure difference drives the fluid through the system or plant.

centrifugal pump

The centrifugal pumps creats an increase in pressure by transferring mechanical energy from the motor to the fluid through the rotating impeller. The fluid flows from the inlet to the impeller centre and out along its blades. The centrifugal force hereby increases the fluid velocity and consequently also the kinetic energy is transformed to pressure.

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The blades if the rotating impeller transfer energy to the fluid there by increasing pressure and velocity. The fluid is sucked into the impeller at the impeller eye and flows through the impeller channels formed by the blades between the shroud and hub.

The design of the impeller depends on the requirements for pressure, flow and application. The impeller is the primary component determining the pump performance. Pumps variants are often created only by modifying the impeller.

When the centrifugal pump impeller inlet liquid pressure below the delivery temperature of liquid under pressure gasification, the liquid begin to gasify.

Meanwhile, the other gas is soluble in the fluid maybe overflow. At the same time, forming large small bubbles in fluid, this phenomenon is called cavitation.

The small bubbles is produced by gasified and dissolving overflow flow together in impeller passage way, when the pressure is increasing gradually, the bubbles will be broken by surrounding fluid pressure, then it will be to condensation. When the bubbles are broken and be to condensation. The gas area volume is decrease gradually and form into cavity in the passage way.

The affect to centrifugal pump

Causing noise and vibration

The cavitation makes the centrifugal pump produce noise and it is bad to the pump. when the bubbles are broken, the machine may vibrate. In this condition, pump can’t work on

Causing working parameter is decreased

When the cavitation phenomenon is serious, the large bubbles in impeller will block the impeller passage way, the continuity of fluids will be damaged, the flow, head and efficiency of pump will be decrease, this condition pump can’t work on.

Causing pump impeller be damaged

When pump cause the cavitation, because of the impact of mechanical corrosion and chemical corrosion, the impeller will be damaged, the impeller can be corroded through when cavitation is serious.

The method of prevent cavitation

The performance of medium, delivery temperature, the length and diameter of intake pipeline, the number of parts of intake pipeline and the installation height of centrifugal pump are all influence the cavitation. In order to preventing cavatation, it demands decrease the delivery temperature, currently install, the design of pump and intake pipeline and installation height are all have strict requirements.