1.5/1B TH Rubber Pump Description
When handling fine, corrosive, and abrasive materials, the Tobee® 1.5/1B TH Rubber Lined Slurry Pump for Mining stands out as the preferred solution for operators worldwide. This Small Size Slurry Pump with Rubber Impeller is specifically engineered to tackle the most demanding slurry transport challenges. As a versatile Industrial Slurry Pump for Sand and Sludge, it combines rubber wear resistance with high-efficiency hydraulic design. The Horizontal Slurry Pump with Rubber Wet Parts configuration ensures easy installation and maintenance. Best of all, this Heavy Duty Slurry Pump with Wear Resistance delivers exceptional service life where metal pumps quickly fail.
Engineered to meet the needs of modern mineral processing operations, the Compact Slurry Pump for Mineral Processing Plants features a horizontal, cantilevered, single-stage centrifugal design with 1.5-inch discharge and 1-inch suction configuration (also available in 2×1.5-inch spec). The pump's wet end components — including the volute liner, frame plate liner, throatbush, and casing — are all rubber-lined, providing an integrated protection system against both corrosion and fine-particle erosion. The rubber impeller and liners are completely interchangeable with hard metal equivalents, offering flexibility for varying process conditions.
7 Key Design Features That Drive Performance
Natural Rubber Rubber Linings: all internal wetted parts are lined with premium natural rubber, delivering superior resistance against corrosive chemicals, caustic agents, and fine-particle abrasion — outperforming metal in many fine slurry applications.
Elastomer Impeller Pump-out Vanes: front and rear shrouds incorporate pump-out vanes that actively reduce recirculation, lower seal contamination risks, and promote smooth slurry flow without clogging in high-density transport.
Flexible Shaft Sealing Options: choose from centrifugal (expeller) seals that eliminate gland water consumption, mechanical seals for near-zero leakage, or traditional packing seals depending on site flush water availability and operational requirements.
Large Diameter Bearing Assembly: a massive shaft with short overhang minimizes deflection and vibration, while heavy-duty grease-lubricated cylindrical bearings are enclosed in a cartridge-type housing for exceptional durability and long maintenance intervals.
External Impeller Adjustment: an accessible adjustment mechanism located below the bearing housing allows operators to easily restore optimal impeller clearance as wear occurs, maintaining peak hydraulic efficiency throughout the pump's service life.
Tapered Throatbush Design: tapered mating faces enable positive accurate alignment during assembly and tool-free removal of the throatbush, significantly reducing maintenance downtime and simplifying rebuilds in the field.
Interchangeable Wet Ends: rubber and hard metal components are fully interchangeable within the same bearing assembly, giving plant operators the flexibility to configure the pump for changing process conditions without replacing the entire unit.
Tobee® Slurry Pump with Rubber Impeller Parameters
| Model | Max. Power | Materials | Clear Water Performance | Impeller Vane | |||||
| No. | (kW) | Liner | Impeller | Capacity Q (m3/h) | Head H (m) | Speed n (rpm) | Eff. Η (%) | NPSH (m) | No. |
| 1.5/1B-THR | 15 | Rubber | Rubber | 10.8-25.2 | 7-52 | 1400-3400 | 35 | 2-4 | 3 |
Mining & Minerals Processing — Tailings and Concentrate Transport
The Tobee® Rubber Lined Slurry Pump for Mining excels in mineral processing plants for circulating mill discharge, feeding hydrocyclones, and transporting final concentrate or tailings to thickeners. At a copper concentrator in South America, this pump reliably handles 65% solids slurry containing minus-200-mesh ground ore, delivering 25 m³/h at 45 meters of head with no measurable impeller wear after 8,000 operating hours.
The rubber wet end easily absorbs impact from soft mineral particles that would rapidly erode chrome iron components. Plant operators report 40% lower spare parts consumption and 60% fewer unplanned stoppages compared to previously installed metal-lined units, directly improving downstream recovery rates and concentrate grades.
Industrial Sand & Sludge Handling — Dewatering and Transfer
As an Industrial Slurry Pump for Sand and Sludge, this compact unit is widely deployed in construction aggregate plants for pumping silica sand slurry from classification cyclones, dewatering sand screws, and handling fine sludge from settling ponds. A Florida frac sand producer uses two Tobee 1.5/1B TH pumps in series to transfer 70% solids sand slurry 300 meters from the wash plant to a stockpile dewatering tower.
The rubber-lined casing and impeller show minimal wear after 12 months of 24/7 operation, while the optional expeller seal allows completely dry-running operation without gland water — a critical feature given the site's limited freshwater availability. Unlike original metal pumps that required monthly impeller replacements, these rubber units run six months between maintenance checks.
Operational FAQ
Q1: What particle size and temperature limits apply to the rubber impeller?
A: The Small Size Slurry Pump with Rubber Impeller is optimized for particles below 500 microns without sharp, angular edges. Maximum recommended particle size is approximately 6–10mm for spherical or rounded solids, but operating efficiency declines as particles exceed 3mm. Temperature must stay within 0–80°C (32–176°F) to prevent rubber degradation — natural rubber softens above 80°C, losing abrasion resistance and dimensional stability. For higher-temperature service or sharp-edged particles (crushed glass, slag, garnet), a metal-lined version or high-chrome impeller is recommended.
Q2: How does the expeller seal work, and when should it be chosen over a mechanical seal?
A: The Heavy Duty Slurry Pump with Wear Resistance offers three sealing options. An expeller seal uses centrifugal vanes on the impeller back to create a dynamic pressure barrier that prevents slurry from reaching the bearing area — it consumes no flush water and operates reliably where site water is scarce, but offers no seal effect when the pump is stationary (requiring a secondary lip seal or packing) and consumes 2–5% additional power [14†L7-L24]. A mechanical seal, either single or double cartridge type, provides near-zero leakage and is preferred where environmental regulations strictly prohibit drips, or where flush water is unavailable but zero leakage is mandatory. Most mining applications default to expeller seals for simplicity and low operating cost.
Q3: Can rubber components be replaced without removing the pump from service?
A: Yes — the Horizontal Slurry Pump with Rubber Wet Parts is designed for field-maintainability. The split casing design with bolted (not glued) liners allows complete wet end disassembly without disturbing piping or the bearing assembly [9†L17-L19]. A typical rubber impeller and liner set replacement takes two technicians approximately 2–3 hours using basic hand tools. The interchangeable design means operators can stock rubber and metal components and switch configurations as process conditions change, all while keeping the same bearing frame and shaft installed.
Conclusion
Whether you operate a remote mine site needing minimal water consumption, or a sand processing plant requiring maximum uptime, the Tobee 1.5/1B TH offers a winning combination of rubber resilience, compact footprint, and low total cost of ownership. Tobee® Rubber Lined Slurry Pump for Mining features a durable rubber impeller for abrasive slurries. Ideal as a Small Size Slurry Pump with Rubber Impeller and Industrial Slurry Pump for Sand and Sludge. Contact us today!
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Tobee is specialized in providing solutions for slurry pump, vertical sump pumps, gravel pump, dredging pumps, froth pump, seawater pumps, fire pumps, slurry pump parts and OEM pump parts for your harsh projects.
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+86 311 8722 1317
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