Horizontal Sand And Slurry Suction Pump

The horizontal sand suction slurry pump is a specialized modified version based on the ZJ type horizontal slurry pump, specifically designed for "suction of sand to the shore" operations such as river sand extraction, lake dredging, and coastal reclamation. The structure remains a single-stage single-suction cantilever type, with two pump housings. The transmission is direct-connection motor or pulley. The belt type can be replaced with different pulleys to adjust the speed and match different suction distances and concentrations.

Pump body, pump cover and flow passage components: This series of pumps are horizontal, vertical mid-mounted, double pump shell structure slurry pumps. The pump body and pump cover are equipped with replaceable metal liners. The liner material is high-chromium wear-resistant alloy, and the liner can be used until it wears through, which extends the maintenance period and reduces operating costs. The outlet direction of the pump can be rotated and installed at 8 different angles.
Bearings assembly: The bearings assembly of the pump adopts a cylindrical structure, which is convenient for adjusting the gap between the impeller and the front guard plate. It can be completely disassembled during maintenance. The bearings are lubricated with grease.
Seal (Sealing): The types of shaft seals for the pump include packing seal, impeller seal, and mechanical seal.
AH series slurry pumps' transmission methods: include V-belt transmission, elastic coupling transmission, gear reduction box transmission, hydraulic coupling transmission, variable frequency drive device, thyristor speed regulation, etc. Among them, V-belt transmission includes CL, CV, CR, ZL, ZV, ZR transmission.
Overall performance: The pump has a wide performance range, excellent cavitation resistance, and high efficiency. It can adopt multi-stage series technology to meet long-distance transportation requirements. The flow components have various metals available for selection, and the depth can be increased. Multiple speeds and various variant methods are adopted, enabling the pump to operate in industrial and mining environments. It has a long service life, high operational efficiency, and can meet various harsh transportation conditions.

Large suction stroke design, working close to the riverbed: The suction stroke of a common slurry pump is 4 to 5 meters. The horizontal suction sand slurry pump, by increasing the inlet flow channel, optimizing the inlet angle of the impeller, and incorporating vacuum-assisted water intake, can achieve a suction stroke of 6 to 10 meters, which can adapt to the working conditions where the riverbed is lower than the pump house floor (such as outside the embankment river, tidal river). It can produce sand suction without sinking the pump onto a boat and is capable of mass production.
Double pump casing with high-chrome inner lining, resistant to quartz sand erosion: River sand, especially river sand, sea sand, contains a large amount of quartz particles, which cause extremely severe wear to the flow components. The Cr27 high-chrome protective sleeve has an HRC of ≥ 58, and its service life is 5 to 8 times that of ordinary HT250; the protective sleeve can be replaced separately when worn, and the outer pressure shell remains unchanged.
Secondary impeller pressure reduction sealing, no leakage under high vacuum: During sand suction, the pump inlet vacuum degree is high (at a suction stroke of 8 meters, the inlet absolute pressure is approximately 0.4 bar), and the compensation ring of the mechanical seal is prone to be "squeezed" and fail. The secondary impeller forms an opposite pressure field outside the packing case, raising the actual pressure in the sealing area to near normal pressure, significantly extending the life of the packing - this is the reason why the secondary impeller should be used in sand suction conditions rather than in ordinary transportation conditions.
V-belt drive adjustable speed, matching suction distance changes: Due to large variations in river water levels in different seasons, a difference of 2 to 4 meters in suction stroke will affect the flow rate. The belt model can change the pump speed by replacing the pulley, "translating" the flow and head curves to match the actual suction distance, which is cheaper and more durable than frequency conversion.

The main application scenarios of the horizontal sand suction slurry pump are "sand suction to the shore" type projects: river channel dredging (maintenance of river channels such as the Yangtze River, Pearl River, and tributaries of the Huaihe River, transporting the accumulated sand to shore storage areas or selling it as building materials), lake and reservoir dredging (utilization of accumulated sand resources in Taihu Lake, Dongting Lake, and reservoirs), coastal land reclamation (suction sand from the near sea to fill land, with high suction requirements due to large water level fluctuations in the intertidal zone), sand extraction from sand mining sites (suction of sand-water mixtures from legal mining areas in river channels to the shore for screening and washing), and port and wharf dredging (removal of accumulated sand at the front of berths). The difference from the YZ type sand suction slurry pump is that YZ is more inclined towards "Supporting suction dredger / Relay pump" heavy continuous operation, with generally smaller suction depths (ship-mounted pumps are submerged types); the horizontal sand suction slurry pump is more inclined towards "shore-based + long suction pipe + long suction distance" operation scenarios, and is a commonly selected model for sand mining sites, dredging project departments, and local water conservancy bureaus.

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