What Is An Oil Sealed Rotary Vacuum Pump?

Two-stage permanent magnet frequency conversion air compressor is a kind of high-efficiency and energy-saving air compression equipment.
Working Principle
It adopts two-stage compression technology to gradually increase the gas pressure through two compression stages. In the first stage of compression, the air is initially compressed to a certain pressure, and then it enters the intermediate cooler for cooling to reduce the temperature before entering the second stage of compression to finally achieve the required high pressure output.
Permanent magnet frequency conversion technology, on the other hand, makes use of permanent magnet synchronous motors to automatically adjust the motor speed according to the actual air demand, thus achieving precise air volume control. Compared with the traditional fixed-frequency air compressor, it can effectively avoid frequent starting and stopping and no-load operation, which greatly reduces energy consumption.
Product features
High efficiency and energy saving: The combination of two-stage compression and permanent magnet frequency conversion technology makes the compressor able to save energy to the maximum extent during operation. Compared with single-stage compressor, two-stage compression can reduce energy consumption by about 15% to 30%. Meanwhile, the high efficiency of the permanent magnet synchronous motor further improves the overall energy efficiency.
Stable and Reliable: Adopting advanced design and manufacturing process to ensure stable operation of the equipment. The permanent magnet motor does not require excitation current, which reduces the loss and heat generation of the motor and prolongs the service life of the motor. Moreover, the intermediate cooling in the two-stage compression process can effectively reduce the temperature of compressed air and reduce the damage to the equipment.
Intelligent control: Equipped with intelligent control system, it can monitor the running status of the equipment in real time and adjust the parameters automatically to achieve unattended operation. Users can conveniently operate and manage the equipment through touch screen or remote control.
Low noise: optimised structural design and sound insulation measures make the air compressor run with low noise, providing users with a quiet working environment.
Convenient maintenance: the structure of the equipment is simple and easy to maintain. Regular maintenance and inspection can ensure the long-term stable operation of the equipment.
Application field
Two-stage permanent magnet frequency conversion air compressor is widely used in industrial production, manufacturing, automobile maintenance, building construction and other fields. It can provide stable and reliable compressed air source for pneumatic tools, spraying equipment, automated production lines and so on.
In a word, two-stage permanent magnet frequency conversion air compressor has become the ideal choice for modern air compression equipment with its features of high efficiency and energy saving, stability and reliability, intelligent control and so on.

Oil-cooled permanent magnet frequency conversion screw air compressor is a kind of advanced air compression equipment with many excellent performance.
Working Principle
It uses the rotary movement of the screw to inhale and gradually compress the air. During the compression process, the lubricating oil plays the roles of cooling, sealing and lubrication. The permanent magnet frequency conversion technology precisely controls the air output according to the actual air demand by adjusting the rotational speed of the motor to avoid energy waste.
Product Features
High efficiency and energy saving: permanent magnet synchronous motor has high efficiency and can save more than 30% energy compared with traditional asynchronous motor. At the same time, the frequency conversion technology can automatically adjust the motor speed according to the air consumption, realising the air supply according to the demand and further reducing the energy consumption.
Stable and reliable: oil cooling technology can effectively reduce the temperature of the motor and screw to ensure the stability of the equipment in long-time operation. The lubricating oil can also reduce the wear and tear of parts and extend the service life of the equipment.
Intelligent control: Equipped with advanced intelligent control system, it can monitor the running status of the equipment in real time and adjust the parameters automatically to achieve unattended operation. Meanwhile, it is also equipped with fault diagnosis and alarm function, which is convenient for users to deal with problems in time.
Low noise: Optimised structural design and sound insulation measures make the compressor run with low noise, providing users with a quiet working environment.
Convenient maintenance: the oil cooling system is relatively simple and low maintenance cost. Regular replacement of lubricating oil and filter can ensure the good operation of the equipment.
Application areas: Oil-cooled permanent magnet frequency conversion screw air compressor
Oil-cooled permanent magnet frequency conversion screw air compressor is widely used in industrial manufacturing, automobile maintenance, building construction, electronic manufacturing and other fields. It can provide stable and reliable compressed air source for all kinds of pneumatic tools, spraying equipments, automatic production lines and so on.
In short, oil-cooled permanent magnet frequency conversion screw air compressor with its high efficiency and energy saving, stable and reliable, intelligent control and other characteristics, has become the ideal choice for many enterprises in the field of air compression.

Oil-free permanent magnet frequency conversion screw air compressor is an advanced air compression equipment with many excellent performance characteristics.
Working Principle
It adopts the screw compression principle, whereby air is sucked in and gradually compressed through the rotation of two screws meshing with each other inside the body. The permanent magnet motor directly drives the screws to rotate, which reduces transmission losses and improves efficiency. Unlike traditional air compressors, oil-free permanent magnet frequency conversion screw air compressors do not use lubricating oil in the compression process, thus ensuring that the output compressed air is oil-free and pollution-free.
The frequency conversion technology automatically adjusts the motor speed according to the actual air demand, achieving precise air volume control and avoiding energy waste.
Product features
Oil-free and pure: no lubricant is used in the compression process, and the output compressed air is completely oil-free, which meets the application scenarios with extremely high requirements on air quality, such as food and beverage processing, pharmaceutical manufacturing, electronic semiconductor and other industries.
High efficiency and energy saving: Permanent magnet synchronous motor has high power factor and high efficiency, which can save more than 30% energy compared with traditional asynchronous motor. Frequency conversion technology can adjust the motor speed in real time according to the air consumption, so that the compressor is always running at the best efficiency point, further reducing energy consumption.
Stable and reliable: The screw compressor structure has the advantages of smooth operation, low vibration and low noise. The permanent magnet motor does not need excitation current, which reduces the loss and heating of the motor and improves the reliability and service life of the motor.
Intelligent control: Equipped with advanced intelligent control system, it can monitor the running status of the equipment in real time and adjust the parameters automatically to achieve unattended operation. Meanwhile, it also has fault diagnosis and alarm function, which is convenient for users to deal with problems in time.
Wide range adjustment: frequency conversion technology makes the output air volume of the air compressor can be adjusted in a wide range to meet different air demand and improve the adaptability of the equipment.
Environmentally friendly and quiet: oil-free design reduces pollution to the environment, while optimised structural design and sound insulation measures reduce noise pollution, providing users with a quiet working environment.
Application fields
Oil-free permanent magnet frequency conversion screw air compressor is widely used in industries with strict requirements on air quality, such as food and beverage, medicine and health, electronics and semiconductor, precision instrument manufacturing and so on. At the same time, it is also suitable for some places with high requirements for environmental protection, such as laboratories, hospitals, office buildings, etc.
In short, oil-free permanent magnet frequency conversion screw air compressor with its oil-free and pure, high efficiency and energy saving, stable and reliable, intelligent control and other characteristics, has become the ideal choice for many industries in the field of air compression, for enterprises to improve the quality of production, reduce costs, and achieve sustainable development to provide strong support.

In today's highly competitive vacuum pump market, Hylein vacuum pumps stand out for their superior performance. With energy savings of approximately 50 % compared to other technologies, Hylein vacuum pumps are undoubtedly one of the most energy-efficient permanent magnet variable speed screw vacuum pumps on the market today. When we look at traditional oil-lubricated rotary vane pumps, water ring pumps and other technologies, we find that they have the obvious shortcomings of lower mechanical efficiency and higher costs. In the process of vacuum application, nearly 90% of electrical energy is usually converted into heat, which not only causes a large amount of energy waste, but also increases the operating costs of enterprises.
Hylein's full range of screw vacuum pumps are equipped with an integrated energy recovery system, which offers powerful advantages. The system is capable of converting up to 75 % of the electrical energy input into heat without any adverse effects on the equipment in the process. This means that by utilising the energy recovery system effectively, companies can make significant savings on their energy costs and invest their limited capital in more valuable business development. At the same time, the high return on investment makes HELIN vacuum pumps a smart choice for many companies. Whether in industrial production, scientific research experiments or other fields, Hylein vacuum pumps bring tangible benefits to users with its high efficiency, energy saving and reliability. It is not only an advanced equipment, but also an important force to promote the sustainable development of the industry.

A heat exchanger is a highly efficient device for transferring heat between different media.
Principle of operation
The heat exchanger uses two or more fluids of different temperatures to transfer heat through a solid wall. The high-temperature fluid transfers heat to the wall, and the wall transfers heat to the low-temperature fluid, so that the low-temperature fluid is heated and the high-temperature fluid is cooled. According to the different ways of heat transfer, heat exchangers can be divided into three types: inter-wall, hybrid and thermal storage. Of these, the inter-wall heat exchanger is the most common type, which separates the two fluids by a solid wall, avoiding direct contact between the fluids.
Product features
High-efficiency heat transfer: adopting advanced heat transfer technology and optimised structural design, it can realise efficient heat transfer and improve the efficiency of energy use.
Compact structure: small volume, occupies less space, easy to install and maintain.
Strong adaptability: can be designed and selected according to different fluid properties, temperature, pressure and other conditions to meet the needs of various working conditions.
Good corrosion resistance: corrosion-resistant materials can be used to extend the service life of the equipment.
Safe and reliable operation: it has good sealing and pressure resistance to ensure the safety and reliability of the equipment in the process of operation.
Application Fields
HVAC: Used for heat exchange in heating, ventilation and air-conditioning systems to improve energy efficiency.
Industrial production: in chemical, petroleum, pharmaceutical, food and other industries, for heating, cooling, condensation, evaporation and other processes in the heat transfer.
Energy field: in thermal power plants, nuclear power plants and other energy facilities, for waste heat recovery, energy conversion, etc.
Transportation: in automobiles, ships, aircraft and other means of transport, for engine cooling, air-conditioning systems and other heat exchange.
Environmental protection field: used for heat recovery and utilisation in the process of sewage treatment, waste gas treatment and so on.
In short, heat exchanger as an important energy transfer equipment, in various fields play an important role. With the continuous progress of science and technology, the performance and efficiency of the heat exchanger will continue to improve, making greater contributions to the realisation of energy saving, emission reduction and sustainable development.