Gravel Pump
The gravel pump is widely used in sand dredging boats, river sand dredging, mineral separation, coal washing, metal smelting technology, etc.
Flow: 300-3050 m3/h
Applicable materials: Horizontal single pump casting structure gravel pump has a wide channel to transport large particle size sand, mud, or gravel. It is suitable for transporting various yellow sand, mineral sand, tailings slurry, tailings ore, slag, electric power coal ash, and other highly corrosive materials.
Description
The gravel pump is a horizontal single-cast centrifugal pump with a wide channel for transporting gravel sand or large particle slurry. Wear parts are made of nickel and high chromium alloys to ensure a longer service life. The gravel pump is suitable for continuous processing of highly abrasive slurry. These slurry contain too large solid particles to be pumped by ordinary slurry pumps. The pump body (pump casing and impeller) is made of 27% high chromium alloy, and the thickened pump casing gives the pump high wear resistance with low maintenance cost. Compared to ordinary pumps, it performs well in dredging, sand mining, barge loading, and mineral processing. Long service life, high efficiency, and works well in many harsh transportation conditions.
Advantages
- The gravel pump is a single-stage suction cantilever-type centrifugal pump and adopts a single pump casing structure connected by a cartridge.
- Lightweight, strong abrasion resistance, wide flow channel, and low energy consumption.
- The long service life of worn parts.
- Easy to install, use, and maintain.
- Low operating costs and high reliability.
Principle
The principle of a horizontal gravel pump: After starting the pump, the motor drives the pump shaft and impeller to rotate together, forcing the water in the blades to rotate. Under the action of centrifugal force, the water is thrown outward from the center of the impeller to obtain energy, increasing the static pressure and flow velocity of the water flowing towards the outer circumference of the impeller. After the water leaves the impeller and enters the pump casing, the water slows down due to the gradual expansion of the flow channel inside the casing, and some kinetic energy is converted into static pressure energy to achieve the purpose of sand pumping.
Specification
| Flow | Power(KW) | Flow（m3/h） | Head(m) | n (r/min) | Efficiency（%） | NPSH（m） | Minimum size of flow section (mm) |
| 6/4D-ZG | 60 | 300 | 45 | 1400 | 58 | 4 | 82 |
| 8/6E-ZG | 120 | 500 | 37 | 1400 | 60 | 3.5 | 127 |
| 10/8F-ZG | 260 | 950 | 43 | 1000 | 65 | 8 | 178 |
| 10/8S-ZG | 560 | 950 | 43 | 1000 | 65 | 8 | 178 |
| 12/10G-ZG | 600 | 1530 | 52 | 850 | 65 | 9 | 220 |
| 14/12G–ZG | 600 | 1700 | 65 | 700 | 73 | 5 | 241 |
| 18/16T–ZG | 1200 | 3300 | 40 | 500 | 72 | 6.3 | 254 |
| 20/18H-ZG | 1400 | 4300 | 39 | 400 | 66 | 8 | 330 |
| 24/20H-ZG | 1400 | 5600 | 57 | 400 | 70 | 7 | 380 |
| 8/6S-ZGH | 560 | 880 | 78 | 1100 | 71 | 4.8 | 140 |
| 10/8S-ZGH | 560 | 1300 | 70 | 950 | 72 | 5 | 180 |
| 12/10G-ZGH | 600 | 2220 | 67 | 700 | 73 | 8.2 | 210 |
| 16/14TU-ZGH | 1200 | 3050 | 59 | 500 | 72 | 6.5 | 230 |
