What is a Roots Blower? Working Principle & Applications

Name: What is a Roots Blower? Working Principle & Applications - Akash Blowers
Brand: Akash Blowers

Our Product Range

Explore our engineered solutions designed to meet the toughest industrial demands.

Twin Lobe Roots Blowers

Twin Lobe Roots Blowers are highly reliable and durable positive displacement units, whose pumping capacity is determined by size, operating speed, and pressure conditions.

Ring/Side Channel Blowers

Ring/Side Channel Blowers feature spiral airflow, multiple air compression, and pulsation-free delivery, ensuring reliable, efficient, and high-performance industrial air supply.

Sludge Dewatering Machine

AKASH Sludge Dewatering Machines separate solids from liquids, reducing sludge volume, lowering costs, and ensuring reliable wastewater management for industries.

Gas Blowers

Gas Blowers are highly reliable positive displacement units designed to handle various industrial gases, with performance depending on size, speed, and pressure conditions.

overview

Roots Blower — Working Principle, Types, Applications & Buying Guide

A Roots Blower is one of the simplest and most reliable ways to move air or gas in industrial systems. If you need a steady, uninterrupted flow — whether for aeration in an STP, pneumatic conveying in a cement plant, or oxygenation in aquaculture — a Roots blower (often called a roots blower compressor) is usually the go-to option. This long-form guide explains how a Roots blower works, the different types (including the common twin lobe roots blower), real-world applications, maintenance, cost drivers (root blower price), and why companies like Akash Blowers are chosen by industry buyers and specifiers.

What is a Roots Blower?

A Roots Blower is a positive-displacement rotating lobe machine that moves a fixed volume of air or gas from the inlet to the outlet with each rotation. Unlike compressors that compress air inside the housing, Roots blowers trap pockets of air between lobes and the housing and transfer that air mechanically from suction to discharge. That creates a nearly constant flow at a modest pressure rise.

Key quick points:

Moves air (or gas) without internal compression.
Produces steady volumetric flow (useful for processes needing consistent airflow).
Common names: Roots blower, roots pump, rotary lobe blower, and sometimes described as a roots blower compressor when used in pressure-aided systems.

Our Products

Working Principle: How a Roots Blower actually moves air

Understanding the basic mechanics helps you choose and troubleshoot these machines.

Components

Two or more lobed rotors (commonly two), mounted on parallel shafts.
Housing/casing shaped to create pockets around the lobes.
Timing gears to keep rotors synchronized (they never contact).
Inlet and outlet ports to guide flow.
Bearings and seals; many designs are oil-lubricated or oil-free with barrier seals.

Step-by-step operation

As the lobes rotate, an inlet pocket opens and traps a fixed volume of air.
The trapped air is carried in the pocket along the casing toward the outlet.
When the pocket reaches the discharge side, the air is expelled into the system.
Since the rotors do not compress inside the pockets, discharge pressure depends on system backpressure; roots blowers typically are used for low to moderate pressure rises.

Resulting characteristics

Pulsation: Some pulsation exists but is much less than piston blowers; can be reduced with silencers and pulsation dampeners.
Flow vs. speed: Flow is roughly proportional to rotor speed; control is commonly by VFD or inlet throttling.
Pressure: Best for low to moderate pressures (typical industrial range up to ~1.0–1.2 bar gauge depending on design). For higher pressures, multi-stage arrangements or paired with compressors are used.

Types of Roots Blowers

1. Twin Lobe Roots Blowers

Twin Lobe Roots Blowers use two-lobed rotors synchronized by timing gears to deliver a steady airflow at low to moderate pressure. They’re simple, cost-effective, and widely used for general aeration, pneumatic conveying, and small-to-medium STP/ETP applications. Their rugged design and easy maintenance make them a popular choice for standard industrial requirements.

2. Tri Lobe Roots Blowers

Tri Lobe Roots Blowers feature three-lobed rotors that provide smoother flow, reduced pulsation, and better efficiency compared to twin-lobe designs. They’re preferred in applications that require lower noise, more stable airflow, and higher reliability—such as sensitive pneumatic conveying lines, chemical processes, and continuous industrial operations.

3. Industrial Roots Blower

Industrial Roots Blowers are heavy-duty blowers designed for 24/7 operation across demanding environments. Available in both twin-lobe and tri-lobe configurations, these blowers are engineered for large flows, higher durability, and long service life. They’re used in cement plants, steel mills, power stations, large STPs, ash handling, and other tough industrial processes where uptime is critical.

4. Water Treatment Blower

Water Treatment Blowers are specialized Roots Blowers optimized for aeration in STP and ETP systems. They ensure consistent oxygen supply to diffusers, support stable DO levels, and can be paired with VFDs for energy-efficient aeration. Oil-free options, acoustic enclosures, and control-ready designs make them ideal for municipal and industrial wastewater treatment.

Our Roots Blowers

Benefits & Advantages

Steady Volume Flow: More consistent than reciprocating blowers for many processes.
Simple Mechanism: Fewer moving parts relative to piston compressors — easier to maintain.
Durability: Built to handle continuous industrial duty.
Compact Size vs Flow: Good size-to-capacity ratio for many plant layouts.
Ability to Handle Dirty Gases: Robust materials and tolerances allow operation with contaminated air (with proper filtration).
Cost-Effective Lifecycle: Lower maintenance and long life often reduce total cost of ownership.

Roots Blower vs Alternatives

Feature / Need	Roots Blower	Screw Compressor	Centrifugal Blower	Vane/Sliding Vane Blower
Typical pressure capability	Low–moderate (up to ~1–1.2 bar)	Moderate–high	Low at high flow	Low–moderate
Flow stability	Very steady	Steady	Flow varies with speed and system	Steady but sliding vane wear can affect
Pulsation	Moderate (reduced in multi-lobe)	Low	Low	Moderate
Efficiency at partial load	Lower, needs VFD	Good with VFD	Good at designed speed	Moderate
Handling dirty air	Good	Moderate	Poor (sensitive)	Poor–moderate
Maintenance complexity	Low–moderate	Moderate	Moderate	Higher (wearing vanes)
Typical use-cases	Aeration, pneumatic conveying	High pressure air systems	HVAC, high-flow low-pressure	Small compressors, vacuum

Maintenance Checklist & Troubleshooting

Daily / Weekly Checks

Check oil levels (if oil-lubricated).
Observe and log operating temperature and vibration.
Listen for unusual noises (gear whine, rubbing).
Inspect inlet filters and clean as needed.

Monthly / Quarterly

Inspect belts, couplings, and alignment.
Check timing gear condition and backlash.
Replace air filters and check silencers for clogging.
Inspect seals and check for oil leaks.

Annual / Major Overhaul

Replace bearings if vibration increases beyond limits.
Inspect rotor clearances and casing wear.
Overhaul gearboxes if gear wear is evident.
Change oil and seals as part of scheduled maintenance.

Common Problems & Fixes

Excessive vibration → Check alignment, bearings, and base tightening.
Reduced flow → Clogged filter, leakage in system, worn lobes, incorrect speed.
Overheating → Low oil, poor ventilation, high backpressure.
Oil carryover → Seal failure or worn bearings — replace seals and inspect bearings.

Root Blower Price: What drives cost and how to budget

When buyers search for root blower price, they often expect a single figure. In reality, price varies widely based on specs. Consider these cost drivers:

Size & Flow Rate: Larger capacity (m³/hr) = higher cost.
Pressure Rating: Higher allowable discharge pressure or multi-stage designs add cost.
Material & Build Quality: Cast iron vs stainless steel; special coatings for corrosive gases raise price.
Number of Lobes & Precision Manufacturing: Multi-lobe and precision-balanced rotors cost more.
Accessories: Silencers, VFDs, pulsation dampers, instrumentation, and acoustic enclosures add to the system price.
Certifications & Testing: Certified models (ATEX, ISO) and tested units can be pricier.
Supplier & After-sales Service: Established manufacturers and local suppliers may charge a premium but offer better support.

Ballpark guidance (example, indicative only):

Small industrial blowers (low CFM): lower four-figure USD/INR ranges.
Mid-range blowers for STP/ETP and medium-duty processes: mid to high four-figure to low five-figure ranges.
Large capacity or specialized oil-free/high-pressure configurations: five-figure and upwards.
Note: Exact root blower price must be quoted against a specified flow, pressure, gas conditions, and required accessories. Always request a detailed quote and lifecycle cost analysis from suppliers.

Roots Blower Manufacturers & Suppliers

When comparing roots blower manufacturers or a roots blower supplier, evaluate these markers:

Proven Track Record: Years in business and industry references.
Testing & Quality Controls: Factory testing, balancing, and inspection reports.
After-Sales Support: Local service network, spare parts availability, and response time.
Customization Capability: Ability to supply oil-free versions, special materials, or multi-stage assemblies.
Warranty & Spare Parts: Clear warranty terms and stocked spare parts reduce downtime risk.
Energy Efficiency Support: Offerings for VFD integration and system-level optimization.

Why Choose Akash Blowers?

If you’re evaluating suppliers, here are compelling reasons many buyers shortlist Akash Blowers:

Industry-Focused Products: Roots blowers engineered specifically for STP/ETP, cement, aquaculture, and industrial processes.
Range of Configurations: From twin lobe roots blower models for general aeration to tri-lobe and multi-lobe options for low-pulsation needs.
Customization & Retrofit: Ability to supply oil-free and oil-lubricated units, acoustic enclosures, and automation-ready packages.
Service Network: Trained technicians and stocked spares reduce Mean Time To Repair (MTTR).
Quality & Testing: Balanced rotors, factory performance testing, and robust housings for long life in harsh conditions.
User-Centric Advice: Support through sizing, selection, and energy optimization (VFD-based control strategies).

(When comparing suppliers, always request performance curves, noise data, and case studies relevant to your industry.)

Conclusion

Investing in the right Roots Blower is essential for maintaining efficient, stable, and reliable airflow across industrial applications. Whether your process requires a twin lobe roots blower, a smoother-running tri lobe roots blower, or a heavy-duty industrial roots blower, choosing the correct model ensures consistent performance, reduced downtime, and better energy efficiency. These blowers continue to be the preferred solution for water treatment, pneumatic conveying, aeration, and numerous other operations where steady airflow is non-negotiable.

As industries push for improved productivity and lower operating costs, selecting a high-quality blower becomes a strategic decision rather than a simple purchase. A precision-built system from trusted manufacturers like Akash Blowers delivers superior durability, optimized airflow, and long-term value. With the right Roots Blower and proper maintenance, you’re not just buying equipment—you’re strengthening the reliability and performance of your entire operation.

Frequaently Asked Question

1. What is a Roots Blower and how does it work?

A Roots Blower is a positive displacement machine that moves air by trapping it between rotating lobes and pushing it from the inlet to the outlet. It delivers a steady, consistent airflow without internal compression.

2. What is the difference between a Twin Lobe and Tri Lobe Roots Blower?

A twin lobe roots blower uses two-lobed rotors and is ideal for standard aeration and conveying needs, while a tri lobe roots blower has three lobes, offering smoother flow, lower pulsation, and quieter operation.

3. Where are Roots Blowers commonly used?

Roots Blowers are widely used in wastewater treatment (STP/ETP), pneumatic conveying, aquaculture, chemical processing, cement plants, food industries, and general industrial aeration.

4. What is a Water Treatment Blower?

A water treatment blower is a Roots Blower specifically designed for STP/ETP aeration. It provides a stable air supply to diffusers and helps maintain proper dissolved oxygen levels for biological treatment.

5. How do I choose the right Roots Blower for my application?

Consider airflow requirements, pressure, operating conditions, gas type, noise limits, duty cycle, and energy efficiency needs. Selecting between twin lobe, tri lobe, or industrial models depends on the specific process.

6. What factors affect the price of a Roots Blower?

Flow capacity, pressure rating, rotor type, material of construction, oil-lubricated vs. oil-free design, accessories like silencers or VFDs, and overall build quality all influence the root blower price.

7. Are Roots Blowers energy efficient?

Yes, especially when paired with Variable Frequency Drives (VFDs). Proper sizing, clean filters, and optimized backpressure also improve energy performance.

8. How often do Roots Blowers need maintenance?

Routine checks like filter cleaning, oil inspection, belt tensioning, and vibration monitoring should be done regularly. Major servicing depends on operating hours and application load.

9. Can Roots Blowers handle dusty or harsh environments?

Yes, industrial roots blowers are designed to operate in demanding conditions, but proper filtration and regular cleaning are essential to prevent wear and maintain efficiency.

10. Are Roots Blowers suitable for continuous 24/7 operation?

High-quality Roots Blowers—especially industrial and water treatment models—are built for continuous duty. Proper lubrication, cooling, and monitoring ensure long, reliable runtimes.

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What Our Clients Say About Us

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Akash Blowers service always excellent, deliveries always on time, staff highly technical and cooperative. Industrial Roots Blower performance great.

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Product quality very good and after-sales support also reliable. With 100% spare parts available, their Ring Blowers service makes the team more dependable.

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Akash Blowers Pvt Ltd makes quality Air Blowers; with 5 years of support their service stays prompt and cost-effective. Roots Blower performance always reliable.

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Best and timely service providers offering quick support and smooth coordination, delivering dependable Water Treatment Blower solutions for every requirement.

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Good staff service, quick quotes, and efficient Roots Blower performance. Client fully satisfied and issues resolved instantly. Well done Akash Blowers.

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Good experience with Akash Products. Best service, on-time delivery and friendly staff. A trusted choice for Twin Lobe Roots Blower users.

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Product quality very good, sales and service staff helpful, spare parts easy to get, and their Ring Blower support remains reliable and smooth.

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We’re associated for 5 years; models like AB-305, AB-44, AB-52 work great. Support is reliable, especially in Industrial Roots Blower solutions.

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I like all the work of this company. Very best 👍🏻 Best quality material and reliable Air Blower and Roots Blower products.

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Very good experience with Akash Blower Company. Supportive team and quick response. Trusted for Water Treatment Blower solutions.

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Very nice service provided by Akash Blowers team. Reliable support for Ring Blower and other Industrial Roots Blower needs.

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Such a wonderful company to buy Ring Blower. Purchased 1 year ago, still works perfectly. Fully satisfied with Roots Blower support.

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Their products and service are very good. Trusted for high-quality Air Blower and reliable Twin Lobe Roots Blower solutions.

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Akesh Blowers provides best on-time service and delivery. Technical, cooperative staff. Ideal for Roots Air Blower, Screw Press, and spares.

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Best on-time service and delivery within 24–48 hours. Friendly, cooperative staff. Ideal for Roots Blower and Industrial Air Blower needs.

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Good experience with Akash Products; their service is reliable, and both Air Blower and Roots Blower solutions deliver consistent high quality.

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Good product and excellent service. Trusted for reliable Air Blower and high-quality Twin Lobe Roots Blower solutions.

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Company bahut achi hai. Staff bhi bahut acha hai. 3 saal se koi problem nahi hui. First-class service for Ring Blower & Roots Blower.

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Good company nd quality of blowers so good nd service bhi too good. Ring Blower and Air Blower products are very reliable.

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Good experience with Akash Products. Nice design, excellent output as per requirement. Trusted for Roots Blower & Air Blower.

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Tags : Twin Lobe Roots Blowers Tri Lobe Roots Blowers, Industrial Roots Blower, Water Treatment Blower, Gas Blowers, Water Cooled Air Blowers, Aqua Culture Blowers, AMC & Spare Parts, Ring Blowers/Side Channel Blowers, Double Stage Ring Blowers, Single Stage Ring Blowers, Sludge Dewatering Machine

What is a Roots Blower? Working Principle & Applications

Our Product Range

Twin Lobe Roots Blowers

Ring/Side Channel Blowers

Sludge Dewatering Machine

Gas Blowers

overview

Roots Blower — Working Principle, Types, Applications & Buying Guide

What is a Roots Blower?

Our Products

Working Principle: How a Roots Blower actually moves air

Components

Step-by-step operation

Resulting characteristics

Types of Roots Blowers

1. Twin Lobe Roots Blowers

2. Tri Lobe Roots Blowers

3. Industrial Roots Blower

4. Water Treatment Blower

Our Roots Blowers

Benefits & Advantages

Roots Blower vs Alternatives

Maintenance Checklist & Troubleshooting

Daily / Weekly Checks

Monthly / Quarterly

Annual / Major Overhaul

Common Problems & Fixes

Root Blower Price: What drives cost and how to budget

Roots Blower Manufacturers & Suppliers

Why Choose Akash Blowers?

Conclusion

Frequaently Asked Question

What Our Clients Say About Us

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