What is a membrane cylinder
Diaphragm cylinder is a cylinder that uses compressed air to push the piston rod through a diaphragm to make reciprocating linear motion. It consists of main parts such as cylinder block, diaphragm, diaphragm disc and piston rod. Its function is similar to that of a piston cylinder, and it is divided into two types: single-acting type and double-acting type.
The diaphragm of the membrane cylinder can be made into two forms: disc-shaped diaphragm and flat diaphragm. The diaphragm material is fabric rubber, steel sheet or phosphor bronze sheet. Commonly used is fabric rubber, the thickness of the rubber is 5~6mm, sometimes 1~3mm can also be used. Metal diaphragms are only used in diaphragm cylinders with small strokes.
Working principle and structure of membrane cylinder
The picture below shows the working principle diagram of the diaphragm cylinder. There are two types of diaphragms: flat diaphragms and disc-shaped diaphragms. They are generally made of fabric rubber, steel sheets or phosphor bronze sheets, with a thickness of 5~6mm (1~2mm thick diaphragms are useful).
The diaphragm shown in the picture belowThe function of the cylinder is similar to that of a spring-return piston single-acting cylinder. When working, the diaphragm pushes the piston rod to move under the action of compressed air. Its advantages are: simple and compact structure, small size, light weight, good sealing, not easy to leak, simple processing, low cost, no wearing parts, easy maintenance, etc. It is suitable for occasions with short strokes. The disadvantage is that the stroke is short, generally no more than 50mm. The stroke of a flat diaphragm is shorter, about 1/10 of its diameter.
1-Cylinder 2-Diaphragm 3-Diaphragm disc 4-Piston rod
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