1. Product Overview

The DS90A is a high-performance screw air compressor unit specially designed for bulk material conveying, cement tank trucks, and pneumatic conveying systems. Adopting mature screw compression technology, it provides stable high-flow air supply in the pressure range of 1.0–2.5 bar, widely suitable for engineering vehicles and industrial conveying scenarios, and serves as the core power component for bulk material transportation. 2. Core Technical Specifications Item Specification Model DS90A Discharge Pressure 1.0–2.5 bar Input Speed Range 700–1100 rpm Air Flow Range 7.3–14.6 m³/min Shaft Power 23.7–45.4 kW Max. Discharge Temperature 230℃ Working Environment -20℃~40℃, Humidity ≤90%RH Required Lubricating Oil Pressure ≥0.3 bar(g)

3. Product Advantages

· High Efficiency & Stable Performance for Wide Working Conditions

Optimized for vehicle-mounted and industrial conveying scenarios, it delivers stable air flow in the speed range of 700–1100 rpm. Even under 2.5 bar high-pressure conditions, it maintains an effective flow rate of 7.3 m³/min, meeting the pneumatic conveying requirements for different conveying distances and materials.

· Durable & Reliable for Harsh Environments

Constructed with high-strength cast iron housing and precision screw rotors, the unit features excellent shock and vibration resistance, suitable for harsh working environments such as vehicle bumping and outdoor high/low temperatures. A built-in speed sensor monitors the operating status in real time to reduce failure risks.

· Optimized Temperature Control for Safe Operation

The discharge temperature is controlled below 230℃ under all working conditions, avoiding equipment aging and pipeline scaling caused by high temperatures. Compared with piston air compressors, the screw structure operates with lower noise and vibration, and has a longer service life.

· Easy Installation & Strong Compatibility

Equipped with an integrated mounting base and standard flange interface, it can be directly installed on the chassis of cement tank trucks and bulk material trucks without additional modification. It supports direct connection with various power sources such as diesel engines and electric motors, adapting to different customer power configuration solutions.

• 4. Typical Applications

  · Pneumatic conveying systems for bulk cement/fly ash tank trucks

  · Air supply equipment for bulk grain, mineral powder and other material transport vehicles

  · Supporting air sources for small industrial pneumatic conveying systems

  · Power units for pneumatic auxiliary systems of engineering vehicles

5. Operation & Maintenance Guidelines

• Check the lubricating oil level before operation to ensure the oil pressure is ≥0.3 bar(g). Never run the unit without oil or under low oil pressure.
• Strictly prohibit reverse rotation of the main unit, and do not operate at speeds below 700 rpm or above 1100 rpm.
• Regularly inspect the air filter and lubricating oil status, and replace the lubricating oil periodically according to working conditions to extend the service life of the equipment.
• If the equipment operates continuously, reserve shutdown and cooling intervals as required to avoid affecting the service life due to long-term high-temperature operation.

6. Precautions

• This unit is only used as an air compressor main unit, and needs to be equipped with a cooling system, air storage tank and filter device to form a complete air compressor system.
• Ensure the equipment is horizontally fixed during installation to avoid component loosening or damage caused by vibration during operation.
• Do not use the equipment directly in flammable and explosive environments. For use in special working conditions, please confirm compatibility with the manufacturer in advance.