Food packaging machine
ry compressor movement to make the play the role of compressed air, the classification of food packaging machine
ry compressor as follows.
food packaging machinery of the compressor in the compressor seal pattern classification:
from the point of food packaging machinery compressor seal structure mode, the compressor can be divided into open and closed, surface which can be further divided into totally enclosed and semi-enclosed two/life open air compressor crankshaft power input out of the body, through the transmission device connected with the prime mover.
Crankshaft position to prevent leakage of shaft seal unit, because of the shaft sealing device is unlikely to seal, so the laser emission and infiltration of outside air is difficult to avoid.
food packaging machinery compressor adopts closed-end structure can be avoided or greatly reduce leakage.
Enclosed compressor with the motor and compressor is installed in the same body and Shared a spindle, because surface can need not shaft sealing device, reduce the possibility of a leak, again at the same time reduces noise, use of inhaled cryogenic propellant motor, is conducive to the small lightweight of the machine.
semi-enclosed and totally enclosed in the form of the compressor in a sealed the difference is that: the body of the former still removable if necessary after assembly, the sealing surface with flange connection, or the gasket seal cushion for leaning on, while the latter after the motor compressor into the chassis, upper and lower casing joint, welding sealing technology, so high requirements for the machine service life, should be able to guarantee long-term (
10 ~ 15 years)
Use, do not need to overhaul.
to corrode copper ammonia containing water, therefore, all the ammonia compressor is open.
Small compressor is used more closed.
the stator winding of the motor is separated by stainless steel thin-walled cover and rotor.
Compared with basic, bring the complexity of the structure technology, quality large size, power consumption is about ten percent more, so less application.
this relatively simple in the motor repair, namely when the stator winding damage, can be replaced without cut casing.
food packaging machinery compressor according to the speed of the compressor classification
compressor according to its speed can be divided into three kinds of low speed, medium speed and high speed.
Although single from speed and bad, and the size of the compressor to measure its recommend suite is not all right, but actually also have not set the boundaries of clear standards, but, according to the commonly used to think, speed under 150 PM for low speed, for medium speed between 150 ~ 600 RPM, more than 600 RPM is a high speed.
modern multi-cylinder compressor are high speed range, it can get larger refrigerating capacity, the appearance of small size and facilitate with motor directly connected.
But the speed of increase will inevitably require the compressor in such aspects as structure, material, manufacture precision corresponding technical measures are taken to ensure its durability.
food packaging machinery compressor in the compressor cylinder arrangement classification
food packaging machinery of compressor cylinder arrangement directly affect the shape, size and quantity.
According to the structure characteristics, the compressor can be divided into horizontal, vertical and Angle type.
horizontal compressor cylinder horizontal layout, so that the height of the building can be lower, the whole machine is in the range of vision, easy to maintenance and management, in addition, the arrangement of the pipeline and the crankshaft, connecting rod, the installation more convenient also.
But, in the past the old single or double row horizontal compressors, due to the dynamic balance is poor, the machine speed can not improve, appears very large bulky, and consequently have been eliminated.
now only symmetrical balance type compressor, due to its two columns is always relative motion of piston dynamic balance is good, therefore, speed can be improved, widely applied in large refrigeration compressor.
vertical food packaging machinery of compressor covers an area of small piston weight function on the cylinder wall, so the wear of the cylinder and the piston is smaller.
hope the above simple summary of the classification of food packaging machinery compressor, are helpful to you.
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