Submersible Slurry Pump

The vertical submersible slurry pump is a single-stage, single-suction overhung centrifugal pump for transferring slurry containing solid particles. Its pump head operates below the fluid level, while the vertical motor sits above the pump on a support base.

A long shaft connects the motor and pump head through a coupling, forming a long-shaft pump configuration. Bearings and shaft seals are located above the submerged section. 

TRYZ Series Submersible Slurry Pump uses wear-resistant alloy components and a semi-open impeller. Standard immersion depths range from 800 to 2000 mm, with 1.3 m and 1.5 m as common options. Longer shafts can be customized for deeper pits, and a suction pipe can be added if needed.

Features of Submersible Slurry Pump

• Reduced maintenance requirements: No submerged bearings or shaft seals.

• Wear-resistant alloy construction: Alloy cast iron casing and impeller.

• SKF bearings in the upper drive section: Easy access for inspection and maintenance.

• Low slurry leakage risk: Sealing arrangement limits slurry leakage.

Working Principle of TRYZ Submersible Slurry Pump

The motor drives the semi-open impeller. As the impeller rotates, slurry enters through the suction opening and moves toward the pump casing under centrifugal force. The slurry then exits through the outlet pipe.

The agitation vanes at the impeller inlets keep settled solids moving around the suction opening. This reduces solids buildup and the risk of inlet blockage during slurry transfer.

Main components: coupling, shaft, auxiliary impeller, semi-open impeller, front and rear liners, front and rear casings, stuffing box, and water seal ring.

Submersible Slurry Pump Technical Specifications

Submersible Slurry Pump Applications

• Oilfield Solids Control

  In drilling fluid systems, TRYZ submersible slurry pumps feed slurry from the mud pits to shale shakers, mud cleaners, and other solids control units at a steady rate.

• Decanter Centrifuge Feed

  The pump keeps a decanter centrifuge supplied with weighted mud and abrasive slurry, lifting fine-solids fluid from below-ground pits to surface separation equipment.

• HDD Mud Recycling

  Entry and exit pits in horizontal directional drilling collect slurry mixed with soil, sand, and cuttings. TRYZ pumps return this material to the HDD mud recycling system for treatment and reuse.

• Drilling Waste Handling

  For pit cleaning and waste management, the pump moves the concentrated slurry and settled solids that accumulate in mud pits and tanks.

Selection Guide

Pump selection depends on the slurry condition, required performance, and installation environment.

• The slurry— solid concentration, particle size, and abrasiveness decide the impeller type and wetted materials.

• The duty — flow rate and head follow from the transfer distance and what the downstream equipment needs.

• The installation — pit depth and available space set the shaft length; site voltage, frequency, and any explosion-proof requirement finalize the motor.

FAQ

1. Does the motor of a submersible slurry pump ever come into contact with the slurry?

   No. The motor and drive assembly stay above the fluid level, connected to the pump head by a long shaft. Only the pump head and the shaft enter the slurry, so the electrical parts never see moisture or abrasive media.

2. How does a submersible slurry pump run without bearings or a shaft seal?

   The bearing assembly sits above the fluid level, so the submerged section carries no bearings or seals that abrasive slurry could destroy. With fewer wear parts below the fluid, the pump needs less maintenance and runs longer between overhauls.

3. Can the immersion depth of a submersible slurry pump be customized?

   Yes. Standard depth is 800–2000 mm. Longer shafts are manufactured to customer requirements, and an optional suction pipe can be fitted where pits are deeper.

TR Solids Control is a Xi'an-based manufacturer of drilling fluid processing equipment and solids control systems, certified to API Q1 and ISO 9001. The TRYZ pump series is part of a wider product range covering the full solids control train: shale shakers, mud cleaners, centrifuges, and complete treatment packages. TR equipment serves oilfield and HDD projects worldwide.