The Heavy Duty High Pressure Hose Pump is a positive displacement pump engineered for transferring abrasive, viscous, and chemically aggressive fluids under elevated discharge pressures without mechanical seals, packing, or internal check valves.
Working Principle: A reinforced elastomeric hose is compressed inside a sealed pump casing by rotating steel shoes or rollers. As the shoe passes, the hose occludes, forcing fluid forward in a continuous positive displacement stroke. The elastic restoring force of the hose creates a high vacuum on the suction side, drawing in media while completely isolating the pumped fluid from the mechanical rotor components.
Core Advantages: Zero seal maintenance (no mechanical seals, gland packing, or external flush water required), bi-directional pumping capability, dry-running tolerance without internal component damage, and gentle handling of shear-sensitive or crystal-bearing fluids.
Typical Media: Mineral slurries with up to 80% solid concentration, abrasive tailings, titanium dioxide slurry, waste activated sludge, lime milk, ceramic slip, and heavy concrete mortar.
Typical Industries: Mining & Mineral Processing, Municipal & Industrial Wastewater Treatment, Chemical Manufacturing, Construction & Tunnelling, and Flue Gas Desulfurization (FGD).
Product Selection Guide
Selecting the correct heavy-duty hose pump requires matching fluid rheology, solid percentage, and pipeline friction losses against operational duty points. Review the parameters below to determine the correct pump size.
|
Model Series |
Max. Flow Rate (m3/h) |
Max. Discharge Pressure (MPa / bar) |
Hose Inner Diameter (mm) |
Recommended Motor Power (kW) |
|
HP-25 |
0.8 - 2.5 |
1.6 / 16 |
25 |
1.5 - 3.0 |
|
HP-50 |
3.5 - 12.0 |
1.6 / 16 |
50 |
5.5 - 11.0 |
|
HP-80 |
10.0 - 32.0 |
1.6 / 16 |
80 |
18.5 - 30.0 |
|
HP-100 |
25.0 - 65.0 |
1.5 / 15 |
100 |
45.0 - 75.0 |
Technical Specifications & Engineering Data
Hose Construction:
Multi-layer reinforcement featuring high-tensile nylon cords embedded in a natural rubber (NR), Nitrile (NBR), EPDM, or CSM elastomer matrix, finished with a precision-ground outer layer for accurate dimensional fit.
Casing & Rotor Material:
Heavy-duty ductile iron casing (QT500-7) with forged steel or stainless-steel rollers/shoes mounted on heavy-duty taper roller bearings to absorb radial loads.
Lubrication System:
Oil-bath lubrication inside the pump housing to minimize the friction coefficient against the hose exterior and dissipate heat generated during continuous high-pressure cycles.
Drive Configuration:
Helical-bevel gear reducer coupled via torque arm or direct baseplate mounting, fully compatible with variable frequency drives (VFD).
Application Suitability & Operating Limits
Abrasive Slurries: Engineered for solid-liquid mixtures where particle hardness exceeds Mohs 6 (e.g., quartz sand, gold/copper tailings). The elastomeric hose absorbs particle impact energy, preventing abrasive wear on metal housing walls.
Viscous Fluids: Operates efficiently at viscosities up to 100,000 cP. Positive displacement action eliminates vapor lock and cavitation common in centrifugal pumps handling thick materials.
Operating Limits: Maximum solid particle size should not exceed 25% of the hose inner diameter for continuous duty. Continuous operating temperature is restricted to 80°C (standard elastomer) or 100°C (specialty high-temp compound).
Manufacturing, Quality Control & Verification
Manufacturing precision dictates hose fatigue life and pressure containment integrity under industrial duty cycles.
Machining: Pump housings and rotor assemblies are machined on CNC floor boring and milling centers to maintain axial alignment tolerances within 0.02 mm, preventing uneven hose pinching and localized fatigue.
Hose Vulcanization: Elastomeric hoses undergo precision steam vulcanization with computerized temperature and pressure recording to eliminate internal micro-voids and prevent delamination under cyclic fatigue.
Factory Testing (FAT): Every assembled pump undergoes a 2-hour dry run test followed by a hydrostatic pressure test at 1.5 times the rated working pressure using calibrated pressure transducers prior to crating.
Frequently Asked Questions
Q: What determines the service life of the pump hose?
A: Hose longevity depends directly on discharge pressure, operational RPM, fluid temperature, and chemical compatibility with the elastomer compound. Under standard mineral slurry applications operating at 1.0 MPa, a properly selected multi-layer reinforced hose achieves between 1,500 to 3,000 operational hours.
Q: Can this pump run dry without damaging internal components?
A: Yes. Because the fluid is entirely contained within the elastomer hose and no mechanical seals require external flush water or barrier fluid, the pump can run dry indefinitely without thermal shock, friction wear, or seal seizure.
Q: How do I prevent pulsation in long discharge pipelines?
A: For long pipe runs or sensitive dosing applications, install a nitrogen-charged pulsation dampener on the discharge port. This accessory reduces pressure fluctuation amplitude by up to 80% and protects downstream instrumentation from hydraulic shock.
Q: What documentation is provided for EPC and plant engineering projects?
A: We supply complete engineering data packages, including certified dimensional general arrangement (GA) drawings, Material Test Reports (MTRs) for wetted metallic parts per EN 10204 3.1, CE compliance declarations, and detailed maintenance manuals containing spare parts interchangeability charts.
Q: Is field replacement of the hose straightforward?
A: Yes. Maintenance technicians can replace the hose on-site without dismantling the main drive assembly or altering pipeline alignment. The procedure involves removing the inspection cover, unbolting flange clamps, sliding out the worn hose, and inserting a pre-lubricated replacement hose using standard hand tools.
Q: What is the standard lead time for replacement hoses and major spare parts?
A: Standard elastomer hoses in NBR, NR, and EPDM for sizes up to HP-100 are maintained in stock. Standard factory dispatch for replacement hoses is 3 to 5 business days; complete pump assemblies require 4 to 6 weeks depending on motor voltage and drive specifications.
Request for Quotation (RFQ) Checklist
To receive an accurate technical proposal and commercial quotation within 24 hours, please provide the following parameters in your inquiry:
Fluid Name & Concentration: (Solid percentage by weight or volume)
Required Flow Rate: (m3/h or GPM)
Total Dynamic Head / Discharge Pressure: (Bar or psi)
Fluid Temperature & Viscosity: (°C and cP)
Power Supply Specifications: (Voltage / Frequency / Phase)
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