(1) The role of the low pressure screw air compressor air filter. The air filter is a one-hund paper filter whose main function is to filter dust from the air. (2) The role of the low pressure screw air compressor intake valve. The loading, unloading and pressure adjustment of the low-pressure screw air compressor is achieved by opening and closing the intake valve. (3) The role of the pressure switch. The pressure change of the low-pressure screw air compressor is used to control the opening and closing of the intake valve of the intake valve solenoid valve, and the motor is further controlled. It can be set to a maximum pressure value. When this pressure value is reached, the intake valve is closed and a stop delay signal is sent to the motor. At the same time, another minimum pressure value can be set. Down to this pressure value, the intake valve opens or restarts the motor. . (4) The role of the outlet check valve. After the compressed air enters the gas cylinder from the compressor, when the low-pressure screw air compressor is stopped, the compressed air is prevented from flowing in the opposite direction to the low-pressure screw air compressor. (5) The role of the safety valve. When the pressure switch is improperly adjusted or fails, the safety valve will be opened when the pressure in the oil and gas barrel is 0.1MPa higher than the rated pressure to protect the safety of the low-pressure screw air compressor unit. (6) The role of the pressure maintenance valve (minimum pressure valve). It is located at the outlet of the oil separator above the oil and gas tank, and the opening pressure is set at about 0.45MPa.
The function of the pressure maintaining valve is as follows: 1) The starting cycle is required to establish the lubricating oil required to ensure the lubrication of the body. The lubrication of the machine oil is carried out by the pressure difference of the machine itself. There is no additional oil pump assistance. When the machine is in the no-load state, it still needs a certain pressure to maintain the oil circulation, so the intake valve is relatively closed, and the minimum pressure valve prevents pressure leakage. Guarantee lubricant circulation. 2) When the machine is loading, if the pressure maintenance valve is not installed, the large pressure difference generated before and after the separation of the oil and gas barrel will be added to the separator, causing damage to the separator core; therefore, the pressure maintenance valve The two functions are opened after the pressure exceeds 0.45 MPa, which can reduce the air flow rate flowing through the fine oil separator, and protect the fine oil separator from being damaged due to too large a pressure difference. (7) The role of the rear cooler. The compressed air outlet temperature is lowered by cooling to ensure safe use of compressed air and meet the performance requirements of air aftertreatment equipment. There are two cooling methods: air cooling and water cooling. (8) The function of the bleeder solenoid valve. When the low-pressure screw air compressor is stopped or empty, the relief valve is opened to discharge the pressure in the oil and gas tank to ensure that the low-pressure screw air compressor can be started or operated under no load when it is operated again. Commonly used relief valves are two normally open solenoid valves or piston relief valves. (9) The role of the gas storage tank. The gas storage tank is a container for storing compressed air and gas discharged from a low-pressure energy-saving air compressor. The gas storage tank helps to eliminate the pulse in the exhaust line, and when the demand is greater than the capacity of the compressor, it can be stored and supplemented to provide compressed air. The larger the volume of the gas storage tank, China screw air Compressor The longer the run time interval. (10) The role of the water gas separator. A water gas separator is a device for collecting and removing condensed water which is precipitated from air or gas during cooling. (11) The role of the automatic drainer. No need to manually operate, drain the water accumulated in the gas tank. This article is edited by China DSNEAIR Compressor Manufactory (https://air-compressor.net). Please indicate.