Page 91 - 《橡塑技术与装备》英文版2026年1月

EQUIPMENT MANAGEMENT AND MAINTENANCE

mixer equipment. The material cylinder adopts a transparent surfaces between metal parts, converting the friction between
shell, which is convenient for observing the condition of the solids into friction within the lubricating grease, thereby
lubricating grease. A level switch is equipped on the top of significantly reducing the friction coefficient. By reducing
the material cylinder, and as the lubricating grease decreases, friction, the wear and tear of the parts during operation is
the grease level gradually lowers. When the level switch is correspondingly reduced. For those parts in the internal
triggered, the lubrication control system will alarm or start the mixer that bear heavy loads and operate continuously, grease
automatic grease addition function. lubrication can prevent wear phenomena such as scratches
and pits on the metal surface due to excessive friction, greatly
extending the service life of these parts and reducing the cost
of equipment maintenance and replacement.
During the operation of the internal mixer, especially
during situations such as rubber feeding, discharging, and
uneven material mixing, certain vibrations and impact forces
are generated. At this time, the lubricating grease layer formed
on the surface of the components by the grease lubrication
can play a buffering role, absorbing and dispersing some
energy, and reducing the impact of these vibrations and impact
forces on the components. At the bearing part of the internal

Figure 1 Outline drawing of electric grease pump for mixer, the lubricating grease can alleviate the impact caused
internal mixer by unstable rotor rotation, protecting the bearing and other
connected components from excessive vibration and impact
After the lubricating grease comes out of the electric damage. By buffering and damping, it helps to maintain
grease pump, it is channeled through a pipeline to the body of
the stability of the internal mixer during operation, reduce
the mixer equipment. Figure 2 is a schematic diagram of the
equipment failures caused by vibrations and impact forces, and
grease lubrication pipeline,
improve the reliability and work efficiency of the equipment.
In addition, the lubricating grease filled in the sealed
space can also serve as a sealing function, preventing external
impurities such as dust, moisture, and corrosive gases from
entering the interior of the components.
Before a new internal mixer is put into production, or
before an old internal mixer is restarted after a long period of
downtime, it is necessary to operate the electric grease pump
first to ensure that fresh lubricating grease is injected before
starting the machine. After normal operation, the electric
Figure 2 Schematic diagram of dry oil lubrication
pipeline grease pump usually works intermittently, and the time can be
adjusted on the human-machine interface according to actual
Before the operation of the internal mixer, it is necessary needs. Figure 3 shows the control program block and setting
to use an electric grease pump to fill lubricating grease into interface of the electric grease pump.
the spaces of various bearings and other parts that require 2.2 Thin oil lubrication system
lubrication. After the internal mixer starts operating, the The lubrication system for the internal mixer is mostly
lubricating grease forms a continuous film on the metal equipped with two independent oil pumps. The lubrication
surfaces of the parts. This film separates the direct contact pump is used for lubricating the contact surface between the

Vol.52，2026 ·45·