 Air compressor is the air source
for PET stretch blow molding machine. It compresses air from atmospheric
pressure to required pressure. For bottle production process, generally,
multi-stage reciprocating type (piston type) air compressor is adopted,
which is generally made up of 3-stage or 4-stage cylinders to compress the
air to 10~40 bar output pressure step by step according to different
requirement.Such compressors are comprised by several key components:
compressor head, motor, air tank and so on. The
compressor head and the motor are both installed on the plate of
the tank. The whole set is easily movable. The compressor head
is driven to work by the motor through the V-belt transmission.
Passing through the air filter, the air is inhaled into the 1st
stage cylinder, where it is compressed to a certain pressure.
After being cooled in the intermediate cooler, the compressed
air is inhaled into the 2nd stage cylinder and finally
compressed to the rated pressure. It enters the air tank
via the check valve and ready for use. For PET bottle blow
molding, usually 20~40 bar compressed air required But to drive the PET stretch blow molding machine, only
8 bar is needed. So two kinds of air compressor to be required:
High-pressure one to supply high pressure compressed air to blow bottle
and Low-pressure one to supply low pressure compressed air to drive the
machine. As KAC series air compressors are piston type machine,
compressed air contains some water, oil and dust. But for PET bottle blow
molding, purified compressed air (oil-free, water-free, dust-free) is
necessary. Thus, an air purifier is necessary. |
Design Feature
- Automatic Unload Device.
- Sucking & Draining Valves
Stainless steel valve made of Sweden Sandvik 7C27M02 steel,
critically lathe & grinder machined, stress eliminated, to assure
excellent strength and anti-impact under high temperature.
- Air Filter
Made of imported materials, with perfect filtering and muffling
result, and long service life.
- Cylinder Cover
Streamlined air tunnel with excellent cooling result.
- Cylinder
Cylinder body machined and grinded by precision CNC to assure
durability.
- Piston Ring
Adopts Riken Ring (Japan) made of fine material, preventive to scrape
on cylinder body, low oil consumption, avoidance to carbon
gathering.
- Tie Rod
Tie rods machined and holed by special machining tool with
guaranteed parallelity, leads to more smooth and stable running of
air compressor, and lower consumption of lubricating oil.
- Crank
Parts wear abrasion adopt wearing-resistant steel with their surface
hardened, to assure best wearability. Crank equipped counter weight
to lower vibration.
- Crank Box
All the orifices and surfaces done in once by one integrated CNC
machine to assure parallelity and verticality.
- Belt Wheel
Dynamically balanced belt wheel integrated with fan by iron casting
leads to perfect flywheel result, low noise, stable running.
- Bearing
Bearing of high performance and long service life made by Sino-US
joint-venture.
- Cooling Copper Tube
With technical design on high cooling effect, the tube is specially
used for reducing temperature.
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