Types of Cylinders

Cylinder refers to a container in an internal or external combustion engine, in which the piston resides and the piston is allowed to reciprocate from top to bottom. It consists of cylinder barrel, end cap, piston, piston rod and seal. There are two kinds of cylinders: linear reciprocating motion and reciprocating swing motion. When working, the piston must be lubricated by oil mist in compressed air. The following is a brief introduction to the types of cylinders.

In pneumatic transmission, the pressure energy of compressed gas is converted into the pneumatic actuator of mechanical energy. There are two kinds of cylinders, one is linear motion and the other is oscillation (see figure). Cylinders with reciprocating linear motion can be divided into four types: single-acting, double-acting, diaphragm type and impact cylinder.

(1) Single-acting cylinder: Only one end of the piston rod, from one side of the piston supply gas gathering can produce air pressure, air pressure pushes the piston to produce thrust, by spring or self-weight return.

(2) Dual-acting cylinder: alternately supplying gas from both sides of the piston and outputting force in one or two directions.

(3) Diaphragm cylinder: replace piston with diaphragm, output force in one direction only, reset with spring. Its sealing performance is good, but its travel is short.

(4) Impact cylinder: This is a new type of component. It converts the pressure energy of the compressed gas into the kinetic energy of the piston moving at a high speed (10-20 m/s) to do work.

(5) Rodless cylinder: The general name of cylinder without piston rod. There are magnetic cylinder and cable cylinder.

The reciprocating oscillating cylinder is called oscillating cylinder. The inner chamber is divided into two parts by the blade, and the air is supplied alternately to the two chambers. The output shaft oscillates, and the oscillating angle is less than 280 degrees. In addition, there are rotary cylinder, gas-liquid damper cylinder and stepping cylinder.