A diaphragm compressor mainly consists of a motor, base, crankcase, crankshaft connecting rod mechanism, cylinder block components, oil and gas pipelines, electrical control system, and some accessories.
The compression head, as a key component, includes an intake valve, an exhaust valve, and a multi-layered diaphragm. The hydraulic system comprises an oil pump, oil tank, and oil circuit control system, which drives the diaphragm movement by controlling the flow and pressure of hydraulic oil. The drive mechanism typically uses a motor-driven crankshaft connecting rod assembly, converting the motor's rotational motion into the reciprocating linear motion of the piston. The cooling system, depending on actual needs, can be either air-cooled or water-cooled to promptly remove the heat generated during compression. The electrical control system is used for automated control and protection of the equipment; for example, an S7-200 PLC programmable controller can be used to control the diaphragm compressor and provide alarm protection functions.
In recent years, a series of patented technologies have emerged for the structural optimization and performance improvement of diaphragm compressors. For example, Zhongding Hengsheng's patent application for "Diaphragm Compressor Assembly Process and Equipment" (CN121696681A) aims to prevent cylinder head displacement or detachment during assembly by combining clamping and negative pressure adsorption. Platinum Technology's patent application for "Diaphragm Compressor New Flywheel Mechanism" (CN223839657U) simplifies the replacement process of the elastomer by optimizing the assembly structure of the flywheel and half-coupling, aiming to reduce equipment downtime. Zhongding Hengsheng's patent application for "Diaphragm Compressor Inlet and Exhaust Pressure Dual Control System" (CN119982478A) uses a PLC to control a variable frequency motor to adjust the piston speed, thereby reducing energy consumption while meeting production needs.