Hose Piston Diaphragm Pump — Zero-Leakage Slurry Transfer by TOMINE

Need a hose piston diaphragm pump that delivers zero slurry leakage into hydraulic oil—without the cost of high-pressure sealing water? TOMINE’s Double Hose Piston Diaphragm Pump is engineered for exactly that, giving mining and mineral processing plants a safer, more energy-efficient way to move abrasive tailings and concentrates.

How Our Hose Piston Diaphragm Pump Works

TOMINE’s hose piston diaphragm pump uses a hydraulic positive-displacement principle to move thick, abrasive slurry with precision and reliability.

The connecting rod pushes the crosshead, converting its circular motion into linear reciprocating motion of the piston. The piston then sucks in or pushes hydraulic oil, causing a pair of double hose diaphragms to contract or expand—changing internal volume to achieve slurry suction or discharge.

Slurry enters from the pump inlet pipe, is buffered by the slurry inlet buffer tank, and passes through the lower slurry inlet check valve into the interior of the hose. Hydraulic oil then squeezes the outside of the hose, opens the upper slurry discharge check valve, and the slurry is discharged under high pressure through the buffer tank.

The result: the pumped medium never touches the piston, gears, or hydraulic system. The diaphragm creates a sealed pumping chamber where the process fluid is transferred, ensuring that the pumped medium never contacts moving mechanical parts.

Why Choose a Double Hose Diaphragm Pump Design

The dual-hose architecture is what sets TOMINE apart from conventional flat-diaphragm pumps. FELUWA, a pioneer of hose diaphragm piston pump technology, showed over 30 years ago that it provides hermetic separation of conveyed fluid from the hydraulic system. The conveyed fluid is led in a linear flow path through the hose diaphragm and contacts solely the inside of the hose diaphragm and check valves.

TOMINE applies the same proven principle with its own two-hose design inside the pump chamber, delivering zero leakage of slurry into hydraulic oil and eliminating the need for high-pressure sealing water—saving significant electricity consumption.

Double Hose vs. Flat Diaphragm — Quick Comparison

Even in the event of one of the hose diaphragms failing, the slurry will not come into contact with the pump casing. That built-in redundancy gives plant operators peace of mind and prevents costly hydraulic oil contamination.

Key Advantages for Mining Operations

TOMINE’s hose piston diaphragm pump delivers measurable value at every stage of slurry transport:

• Zero slurry leakage — Dual hose diaphragms create two hermetic barriers between process media and hydraulic oil
• No sealing water — Eliminates high-pressure seal water systems, cutting electricity and water costs
• Handles extreme solids — Piston-actuated diaphragm pumps can pass thick slurries, sometimes as thick as up to 70% solids.
• High volumetric efficiency — High volumetric pumping efficiency by nature.
• Low vibration — They operate at a slow stroke speed that is conducive to low vibration and parts wear.
• Hermetically sealed — No seal problems because the diaphragm is the seal (technically hermetically sealed).
• Long service life — The most major wear components such as gearboxes and drive pistons usually last the entire life of the pump. A well-built piston-actuated pump can last 30 years or so.
• Passive pumping action — The diaphragm is positioned to the side of the product being pumped and, therefore, is passive pumping.

Hose Piston Diaphragm Pump Applications

Tailings Transport & Disposal

Long-distance tailings pipelines demand consistent flow and high discharge pressure. Our hose piston diaphragm pump handles abrasive, fast-settling tailings without dilution. When pumping solids-laden media over long distances, the double hose-diaphragm design enables energy-efficient, water-saving operation and long service intervals.

Concentrate Pipeline Delivery

Pumping mineral concentrates over kilometers of pipe requires repeatable, steady volume. Since they move a given amount of fluid or slurry for each pulse of the diaphragm, they can pump repeatable and reliable volumes almost every time.

Filter Press Feeding

The pressure and flow control strategy of venting and refilling the working fluid creates a flow curve that makes a piston diaphragm pump an ideal choice as a filter press feed pump. TOMINE’s pump ramps pressure smoothly, producing optimal filter cake quality without blinding the cloths.

Mine Dewatering

When the fluid being pumped is not clean, a piston-actuated diaphragm pump provides a hybrid solution that keeps underground workings dry and operational—even when water is loaded with migrating solids, varying pH, and high temperatures.

These applications fit seamlessly into TOMINE’s broader slurry pump equipment portfolio and work in tandem with our grinding circuit systems and flotation equipment.

What Makes TOMINE’s Hose Piston Diaphragm Pump Different

Engineered for Total Cost of Ownership

At its best, this kind of pump can earn back the capital investment in a short time due to the low maintenance, repair time, heavy-duty design and energy efficiency. The lack of packing, a mechanical seal, oilers or seal flush plans can make up for the initial higher cost.

Built-In Redundancy

Two concentric, independently operating diaphragms made from high-performance elastomers create two hermetically-sealed barriers between the process medium and the hydraulic system, ensuring that the conveyed product never contacts any metallic or hydraulic components. The result: zero leakage, maximum operator safety, and outstanding resistance to wear, corrosion, and chemical attack.

Fewer Wear Parts, Less Downtime

Because only the check valves are subject to wear, operators benefit from exceptionally long service life, excellent mean time between repair (MTBR) and failure (MTBF), and low total cost of ownership.

Expert Insights: Why Piston Diaphragm Pumps Dominate in Mining

Piston diaphragm pumps are robust all-rounders. They convey critical and environmentally hazardous fluids safely and reliably: regardless of whether abrasive, aggressive or toxic media, the diaphragm-separated pump chamber protects machine, people and the environment.

Frequently Asked Questions

What does “zero leakage” mean in a hose piston diaphragm pump?
It means the slurry you pump never contacts the hydraulic oil or drive components. TOMINE’s dual-hose design places two independent hose diaphragms between the process medium and the hydraulic system. Even if one hose diaphragm fails, the slurry will not come into contact with the pump casing. This eliminates oil contamination and unplanned shutdowns.

How is a hose piston diaphragm pump different from a flat-diaphragm pump?
With double diaphragm pumps using flat diaphragms, the conveyed fluid is in direct contact with both the flat diaphragm and the pump casing—so the casing must be resistant to the conveyed fluid. Moreover, solids may settle around the diaphragm clamping mechanism, causing damage due to abrasion that ensures shorter diaphragm life. A hose design avoids these issues entirely by routing slurry linearly through a flexible tube.

Does the TOMINE hose piston diaphragm pump require sealing water?
No. The dual-hose architecture creates a hermetic barrier without high-pressure sealing water. This saves both electricity and process water—a significant operational advantage in arid mining regions.

What maintenance does this pump need?
A piston-actuated diaphragm pump can provide longer, predictable wear with forgiving maintenance algorithms. The most major wear components such as gearboxes and drive pistons usually last the entire life of the pump. Routine checks focus on hose diaphragm condition, check valve seats, and hydraulic oil levels.

Can this pump handle long-distance tailings pipelines?
Absolutely. Whether as a double hose-diaphragm pump or a solids diaphragm solution, proven piston diaphragm pump technology enables reliable and efficient pumping of media with higher solids content—even over long distances and at high viscosity.