The sand and gravel dredge pumps are heavy-duty centrifugal pumps developed by Zhengrong Pump for handling mixed sand and gravel slurries in dredging and construction projects. Combining technologies from the company's ZJ sand pump and ZG gravel pump series, these pumps are engineered to handle the dual challenges of abrasive sand and large gravel particles. The pump adopts a reinforced structure with thickened walls and wear-resistant materials for all wetted components. Surface inspection and non - destructive testing comply with DIN1690 Class 4 standard.
Product Parameters
|
Indicator |
Specification |
|
Flow Rate |
120-1500 m³/h |
|
Head |
18-70 m |
|
Motor Power |
55-450 kW |
|
Maximum Particle Size |
≤100 mm |
|
Material Hardness |
58-62 HRC |
|
Lubrication System |
Automatic grease lubrication |
|
Weight |
900-9500 kg |
Product Advantages
Special vane profile handles mixed sand and gravel without efficiency loss, eliminating the need for separate pumps for different materials.
Reinforced pump body withstands pressure fluctuations common in mixed material transport, reducing structural failures by 40%.
Automatic lubrication system extends bearing life to 25,000 hours, reducing maintenance costs.
High-chromium alloy wear parts provide consistent performance for both sand and gravel, extending replacement intervals.
Main Applications
Dredging of sand and gravel deposits in rivers, lakes and coastal areas.
Sand and gravel dredge pumps are also used for aggregate transport in construction and road-building projects.
Land reclamation projects requiring mixed material handling.
Harbor and navigation channel maintenance involving sand and gravel removal.
FAQ
Q: What is the maximum concentration of sand and gravel the pump can handle?
A: The sand and gravel dredge pumps are designed to handle slurries with a maximum solid concentration of 35% by volume, suitable for most mixed sand and gravel dredging applications.
Q: Can the pump be used for long-distance transport of sand and gravel?
A: Yes, the pump can handle transport distances up to 1000 meters when configured with the appropriate pipeline diameter and additional booster pumps if required.
Q: What maintenance is required for the automatic lubrication system?
A: The lubrication system requires refilling with high-temperature grease every 2000 hours and filter replacement every 4000 hours, which can be performed during routine maintenance.
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