• 2025/1/7 10:07:30

Several Main Systems of Screw Air Compressor

1. Electronic control system

The electronic control system is the "brain" of the screw air compressor, responsible for controlling and monitoring the operation of the entire equipment. It consists of computer controller, emergency stop button, mutual inductor, sensor, contactor, transformer, fuse, phase sequence protector, terminal block, solenoid valve, wire and other components.

Computer controller: As the control center, it can monitor various data of the machine in operation in real time, such as pressure, temperature, current, etc. When an abnormal situation is detected, the computer version will immediately issue an alarm and take corresponding protective measures to prevent equipment damage or accidents.

Sensor: Sensors are used to detect various parameters of equipment, such as pressure sensors, temperature sensors, etc. They transmit the detected signal to the computer controller, which analyzes and processes it.

Solenoid valve: Solenoid valve is an important component in the electronic control system, which is used to control the opening and closing of components such as the intake valve and the discharge valve. The loading and unloading control of the machine is realized through the precise control of the solenoid valve.

Contactor: The contactor is a switch component in the circuit, which is used to control the start and stop of the motor. In the screw air compressor, the contactor is usually connected to the motor and the computer version to realize the remote control and protection of the motor.

2. Intake system

The intake system is the "breathing organ" of the screw air compressor, which is responsible for sucking the outside air into the equipment for compression. It consists of air filter assembly, intake pipe, intake valve, solenoid valve, pressure regulating valve, proportional valve, control pipeline and other components.

Air filter assembly: The air filter assembly consists of an air filter element and a muffler housing, which is used to prevent external impurities from entering the spiral host. The air filter element is usually made of high-efficiency filter material, which can effectively filter out dust, particles and other impurities in the air and protect the inside of the host from pollution.

Inlet valve: The air intake valve is a key component for controlling the air entering the screw main unit. When the solenoid valve receives the command from the controller, it will open the air intake valve to allow outside air to enter the compression chamber. At the same time, the air intake valve also has the function of adjusting the air intake volume, and can adjust the air intake volume according to actual needs.

Unloading valve: The unloading valve is used to release the pressure in the compression chamber when the equipment is shut down or unloaded to prevent damage to the equipment caused by excessive pressure. When the equipment is shut down or unloaded, the unloading valve will automatically open to discharge the gas in the compression chamber.

3. Power system

The power system is the "heart" of the screw air compressor, providing a steady stream of power for the equipment. It consists of parts such as the screw main unit, the drive motor, the transmission device (belt, pulley or coupling), and the connecting parts (standard parts such as bolts and gaskets).

Screw main unit: The screw main unit is the core component of the compressor, which consists of a pair of high-precision male and female rotors installed in parallel inside the casing. The male and female rotors are connected by transmission devices such as gears or belts, and are driven to rotate by the drive motor. During the rotation process, the tooth groove space between the male and female rotors gradually decreases, compressing the inhaled air.

Drive motor: The drive motor is a key component for providing power, usually a three-phase asynchronous motor or a permanent magnet synchronous motor. The drive motor is connected to the screw main unit through a transmission device, converting electrical energy into mechanical energy to drive the screw main unit to rotate.

Transmission device: The transmission device is used to transmit the power of the drive motor to the screw main unit. Common transmission devices include belt drive, gear drive and coupling drive. Different transmission methods have different characteristics and applicable scopes, which can be selected according to actual needs.

4. Separation system

The separation system is the "filter" of the screw air compressor, which is used to separate the compressed oil and gas mixture. It consists of oil and gas barrels, drain valves, return oil pipes and other components.

Oil and gas barrels: The oil and gas barrels are the core components of the separation system, which are used to store the compressed oil and gas mixture. Inside the oil and gas barrel, after the oil and gas mixture is initially separated, the lubricating oil flows back to the bottom of the oil and gas barrel, and the compressed air is transported to the cooling system through pipelines for further processing.

Drain valve: The drain valve is used to discharge sediment and moisture at the bottom of the oil and gas barrel. During the operation of the equipment, some lubricating oil and impurities will be deposited at the bottom of the oil and gas barrel. By regularly opening the drain valve, these sediments and moisture can be discharged from the outside of the equipment to keep the equipment clean and operating normally.

5. Cooling system

The cooling system is the "radiator" of the screw air compressor, which is used to reduce the heat generated by the equipment during operation. It consists of a cooler, a cooling fan (axial flow centrifugal) and an air guide cover. Or shell and tube cooler and cooling water system.

Cooler: The cooler is the core component of the cooling system, which is used to transfer the heat in the compressed air to the cooling medium (usually air or water). Inside the cooler, the compressed air and the cooling medium are heat exchanged through a plate-fin structure to achieve a cooling effect.

Cooling fan: The cooling fan is used to accelerate the flow rate of the cooling medium and improve the heat exchange efficiency. Depending on the cooling medium, the cooling fan can be of different types such as axial flow fan or centrifugal fan.

6. Pipeline system

The pipeline system is the "blood vessel" of the screw air compressor, which is used to connect various systems and realize the transportation and circulation of gas. It consists of oil and gas pipes, hot oil pipes, cold oil pipes, exhaust pipes and control pipes.

Oil and gas pipes: Oil and gas pipes are used to transport lubricating oil and compressed air. In screw air compressors, lubricating oil is usually compressed together with compressed air and transported to the cooling system for cooling. The design of the oil and gas pipe should take into account factors such as the pressure and temperature of the fluid to ensure its safe and reliable operation.

Exhaust pipe: The exhaust pipe is used to discharge the compressed gas to the outside of the equipment. In the design of the exhaust pipe, factors such as gas pressure, temperature, and flow need to be considered to ensure that it can discharge the gas smoothly and avoid damage to the equipment.

7. Safety protection system

The safety protection system is the "guardian" of the screw air compressor, which is used to monitor the operating status of the equipment and take measures to protect the equipment under abnormal conditions. It consists of safety valves, temperature sensors, pressure sensors and other components.

Safety valve: The safety valve is used to automatically release the pressure when the internal pressure of the equipment is too high to prevent the equipment from being damaged by overpressure. In screw air compressors, the safety valve is usually installed on the exhaust pipe. When the exhaust pressure exceeds the set value, the safety valve will automatically open and release the pressure.

Temperature sensor: The temperature sensor is used to monitor the temperature status of the equipment. When the temperature of the equipment is too high, the temperature sensor will send an alarm signal to the computer version and trigger corresponding protection measures (such as shutdown, unloading, etc.) to prevent the equipment from being damaged by overheating.

Pressure sensor: The pressure sensor is used to monitor the pressure status inside the equipment. When the internal pressure of the equipment is too high or too low, the pressure sensor will send an alarm signal to the computer version and trigger corresponding protection measures to ensure the normal operation and safety of the equipment.

In summary, the screw air compressor is a complex and sophisticated equipment, and its various systems work together to achieve gas compression and transportation. By deeply understanding the working principles and components of these systems, we can better use and maintain the screw air compressor and improve its efficiency and life. At the same time, it is also necessary to pay attention to the safe operation and maintenance of the equipment to ensure that it plays a greater role in industrial production.