Reciprocating vacuum pump open type (cylinder) piston diagram is used in a small, slide free compressor.
When the press is working, the vertical component of the force acting on the speed bar presses the piston to the surface of the gas a, and the maximum value of the vertical component n corresponds to the beginning of the press out. The lift unit pressure on the side of the piston is determined by.
For high-speed compressors, it is desirable to minimize the weight of the piston. In addition to the widely used piston made of aluminum alloy in compressor manufacturing, the light-weight cast iron piston diagram can also be used. The cut on the side of the piston can not only reduce its weight, but also reduce the friction work.
The piston of the direct-current compressor is required to pass through the gas and is equipped with a suction valve at the top. The spherical diaphragm in the piston separates the suction volume from the crankcase.
When assembling the compressor, it can ensure that the piston fits the cylinder correctly. However, when the compressor is working, the adjustment achieved will be damaged due to the following reasons: the heat of the piston is higher than that of the cylinder, and the cylinder shape of the piston is distorted due to the influence of the rigidity of the ribs; while the cylinder is suction on one side and press out on the other side, and the temperature of the wall is high at both ends In the middle part, it will deform and lose the correct shape; elastic deformation under the action of gas pressure and piston force. As a result, instead of the contact of the overall bearing surface, the piston only supports on the cylinder with a small area with a particularly high load. Therefore, when the piston with a large diameter has a large diameter, there are often serious friction and scratches on the working surface, especially when the gas body with dust not removed is compressed well.
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