HLT Series Stationary Screw Air Compressor (Dual-Purpose for Sandblasting & Industrial Applications, High-Efficiency Energy-Saving Air Compressor)

This HLT series stationary screw air compressor is an industrial air source equipment that operates on the twin-screw rotor meshing compression principle. Through the linear and continuous compression of two asymmetrical screw rotors inside the compression chamber, mechanical energy is converted into gas pressure energy, providing stable, clean, and efficient compressed air for various pneumatic equipment and production processes. As the ideal matching air source for sandblasting machines, pneumatic tools, automated production lines, and other equipment, this HLT stationary screw compressor has become the mainstream choice in the industrial gas compression field due to its outstanding advantages of high reliability, low vibration, low noise, and pure exhaust. The core working process is: air first passes through a pre-filter, then through an air filter and inlet controller, enters the screw compressor chamber to mix with lubricating oil, and is compressed linearly and continuously by two asymmetrical rotors. The compressed oil-air mixture enters the oil tank and separation system for three-stage separation (centrifugal, gravity, and precision separation), and the separated compressed air is cooled by the cooler before discharge. This HLT stationary screw air compressor features 0-100% infinitely variable displacement technology—when air demand decreases, the displacement automatically reduces and the motor current drops accordingly; when no air is needed, the compressor runs unloaded and automatically shuts down after prolonged idling, achieving intelligent energy-saving operation. Lubricating oil circulates automatically through the system’s internal pressure differential without the need for an oil pump; in addition to lubrication, the oil also serves critical functions of sealing, cooling, and noise reduction.

In terms of manufacturing quality and structural integrity, this HLT stationary screw air compressor features an SKK oil-injected twin-screw compressor unit, utilizing the latest generation SKK series screw rotor patented profile technology derived from UK technology, with a bilateral asymmetrical structure of male and female rotors. This patented rotor profile fully achieves “curve-to-curve” meshing, which helps form a hydrodynamic lubricating film, reduces transverse leakage through the contact zone, and improves compressor efficiency. The compressor unit adopts a “large rotor, large bearing, low speed” design philosophy, with speeds 30-50% lower than other brands, effectively reducing noise and vibration, lowering discharge temperature, improving rotor rigidity, and extending service life. The entire unit features an integrated housing with SKF heavy-duty bearings, enhancing structural stability and durability. The complete unit adopts a fully enclosed structure with hot and cold airflows separated internally to prevent interference; the compressor unit and motor are isolated from the base using vibration-damping pads, causing no interference with surrounding equipment, featuring low noise, low vibration, and no need for a dedicated foundation. Equipped with an intelligent microcomputer control system integrating fault diagnosis and protection functions, it supports 24-hour unattended operation.

The performance advantages and application value of this HLT stationary screw air compressor are exceptionally prominent. First, significant energy savings – the 0-100% infinitely variable displacement technology, combined with permanent magnet variable frequency drive, enables on-demand air supply and constant pressure control, dramatically reducing no-load energy consumption. Second, high reliability and long service life – the twin-screw compressor unit has a simple structure with few wearing parts; combined with SKF heavy-duty bearings and the “large rotor, large bearing, low speed” design, it can operate continuously and stably for extended periods. Third, quiet and environmentally friendly operation – the low-speed design combined with excellent vibration isolation and noise reduction measures keeps operating noise as low as 65-72 decibels, with no dedicated foundation required for installation. Fourth, strong adaptability – both air-cooled and water-cooled cooling methods are available, suitable for high-temperature and high-humidity environments. Fifth, easy maintenance – the rational structure makes routine maintenance and periodic servicing very convenient.

In terms of application scope, this HLT stationary screw air compressor is widely used in machinery manufacturing, sandblasting and painting, automotive manufacturing, petrochemical, mining and metallurgy, electronics and power, textile, pharmaceutical, food, and other industrial fields. In the sandblasting industry, it provides continuous, stable high-pressure airflow for sandblasting machines, ensuring blasting efficiency and surface treatment quality. In machinery manufacturing, it provides power support for pneumatic tools and automated production lines; in automotive manufacturing, it drives assembly tools and pneumatic control systems; in the chemical industry, it is used for material conveying and chemical reactions. This HLT series stationary screw air compressor is an indispensable core air source equipment in modern industrial production.