Gravel pump

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G, GH gravel pump


G (or GH) type gravel pumps are mainly used for the continuous conveying of highly abrasive materials with particles too large for general slurry pumps. They are suitable for dredging operations on dredgers, dredging rivers and channels, conveying mining and metallurgical blast furnace slag, etc.

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Application fields of slurry pumps


Mining industry: Used for slurry transportation in ore processing, and transportation of tailings, coal slurry and other solid particles. Metallurgical industry: Used for the treatment of slurry and waste residue generated during smelting, as well as alumina plants and steel plant slag discharge systems.

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Performance characteristics of slurry pumps


Efficiency: Slurry pumps have a wide performance range, good cavitation performance, and high efficiency. Flexibility: Multi-stage series technology can be used to meet the needs of long-distance transportation.

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Gravel pump selection and maintenance


Selection: When selecting a gravel pump, factors such as the nature of the medium (e.g., particle size, concentration, corrosiveness), conveying distance and height, flow rate and head requirements must be considered to ensure that the pump meets the actual operating conditions.

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Structural characteristics of gravel pumps


Pump body and pump cover: Gravel pumps typically adopt a single-stage, single-pump casing structure. The pump body and pump cover are clamped together using special clamps for easy installation and disassembly. The pump discharge port can be adjusted to any position within 360 degrees, making installation and use flexible and convenient.

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The operating principle of a water pump varies depending on the type.


Blade pump: It relies on rotating blades to transfer mechanical energy to the fluid. Common types include centrifugal pumps, axial flow pumps, and mixed flow pumps. Among them, the working principle of the centrifugal pump is: under the action of the centrifugal force generated by the high-speed rotation of the impeller, the liquid is thrown outward and pressed into the volute, forming a vacuum, so that the water in the pool is sucked in through the suction pipe under the action of external atmospheric pressure, thus continuously sucking water and pressurizing; the axial flow pump uses the thrust generated by the high-speed rotation of the impeller to raise the water level; the working principle of the mixed flow pump combines centrifugal force and lift.

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There are many types of water pumps, depending on different classification standards.


According to the pump shaft direction: it can be divided into horizontal, vertical and inclined types. According to the type of casing split: it is divided into radial split type and axial split type. According to the number of stages: it is divided into single-stage and multi-stage.

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