2, cleaning minimum pressure valve (screw compressor, also known as pressure maintaining valve) minimum pressure valve from the valve body, valve, adjusting nut, springs, sealing elements and other components. Mainly from the establishment of minimum pressure valve pressure inside the unit, prompting the oil circulation to meet the offloading valve operating pressure and so on. Also the minimum pressure valve can also play the role of a one-way valve to prevent the unit running at unloading tank compressed air back to the compressor. (1) Remove the minimum pressure valve: minimum pressure valve structure is very simple, unscrew the nuts and the valve spool between the inside of the element can be removed well-known compressor manufacturers, the minimum pressure valve spool valve built into small units body, which open the valve cover to remove all internal components. (2) Cleaning minimum pressure valve: Press the purge valve unloader cleaned minimum pressure valve. (3) The minimum pressure valve assembly: assembly steps for removal of the anti-element, since the minimum pressure valve structure is very simple, the assembly process is not to recount air compressor factory outlets, but should pay attention to, such as when an internal U-ring , should pay attention to the direction of U-rings. (4) The minimum pressure valve after the cleaning process is complete aside to be loaded into the compressor. Compressor mainly by the body, the crankshaft connecting rod, cylinder piston, intake and exhaust valves and other components. When the crankshaft drive motor running. Piston rod driven by compressor manufacturers to reciprocate within the cylinder and suction, complete the compression of the refrigerant, exhaust, expansion and lower exhaust valve during inspiration with: (1) the compression process: the low pressure gas refrigerant after compression and process of becoming a high-pressure gas, called the compression process. When the piston is moved to the lower end (ie, the position of the piston can not move down), the inner cylinder is filled with low-pressure gas refrigerant, the piston begins to move upward along the cylinder, then shut the suction valve piston compressor manufacturers, cylinder volume of gradually cut back. And in a closed cylinder. The gaseous refrigerant is compressed, the pressure and the temperature will gradually rise. When the pressure reaches the exhaust pressure, exhaust valve opens automatically begin exhaust. (2) Exhaust process: the gaseous refrigerant at the end of the compression process, starting from the discharge valve, piston continues to move, the gas pressure inside the cylinder will not rise, and continue to exhaust. Discharge process until the end of the piston movement of the piston reaches the upper end [ie, can no longer move upward position). (3) Expansion process: start to move as soon as the piston reaches the upper end downwardly along the cylinder, the exhaust valve is automatically shut down, this time in the clearance volume remaining amount of the high-pressure gas refrigerant, is called expansion volume increases the pressure drop process. (4) At this end since the start of the piston moves downward to a certain position, the gaseous refrigerant pressure remaining in the cylinder reaches the suction pressure, the end of the expansion process, the piston continues downward. When the in-cylinder gas pressure is lower than the suction pressure, the suction valve is automatically opened and the low-pressure gas refrigerant into the cylinder. When the piston moves down to the lower endpoint, and full of gas in the cylinder, this time to complete the process of breathing and ready the next compression process. S perpetual motion studies such as the low-pressure gas into high-pressure gas in the compressor, and the refrigerant delivered from the evaporator to the condenser. Compressor manufacturers rental | Qin Wei Air (certified) | Jingdezhen compressor manufacturers to provide the Compressor Co., Ltd. Xianyang Qin Wei. Xianyang Qin Wei Compressor Co. (www.xykyj.cn/) is Xianyang, compression, separation equipment leader, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Qin Wei Pneumatic leadership with the staff warmly welcome all inquiries negotiations to create Qin Wei Pneumatic better future.