Page 90 - 《橡塑技术与装备》英文版2026年1月

HINA R&P TECHNOLOGY AND EQUIPMENT

mixers are generally equipped with two thin oil pumps, which equipped with an electromagnetic valve and a level switch,
are distinguished according to the type of oil used and the which can achieve automatic oiling through a PLC program
location of use. The pump used for lubricating the surfaces of or relay circuit. This form is mainly used in small models
the stationary and rotating rings is usually called a lubrication (GE135 and below) or equipment with lower configuration
pump; the pump used for gap lubrication between the rotor end requirements.
face and the wear plate is usually called a process lubrication 1.3 Structural form of lubrication center
pump. Two thin oil pumps are installed together, with a motor
Currently, there are several configurations available for power of 2×0.55 kW. The lubrication center is equipped with
the thin oil lubrication center: an electric control box, which can achieve multiple functions.
1.1 Configure a thin oil pump Currently, this type of thin oil lubrication center is the most
The motor power is 0.25 kW. This type of thin oil widely used.
lubrication center is applied to situations where there are fewer 1.4 Configure an electric high-pressure pump
lubrication points or where the lubrication requirements are with a distributor
not high. The lubrication oil pump and process lubrication oil The motor power is 2×1.1 kW, and its function is
pump are integrated, and the lubrication oil and process oil use basically the same as "1.3". This type is mainly equipped on
the same type of oil. It is equipped with 8 to 15 oil filling ports. large internal mixer, which can provide higher pressure and
It is commonly used in small laboratory internal mixers such as greater flow for lubricating oil.
GN1.5, GE5, and GN10. 1.5 Servo motor drive
1.2 Configure two thin oil pumps The motor power is 2×1.0 kW, and both oil pumps
The motor power is 2×0.25 kW. The lubricating oil pump can quickly adjust the oil output according to the working
and the process lubricating oil pump supply oil separately. conditions. Currently, this type of thin oil lubrication center is
The lubricating oil pump is equipped with a standard motor, gradually becoming mainstream.
while the process lubricating oil pump is equipped with a The basic parameters and configurations are shown in
variable frequency motor. Different types of oil can be used Table 1:
for lubricating oil and process oil. The material cylinder is
Table 1 Parameters and configuration features of the lubrication center
Motor type
Project Ordinary motor + variable Ordinary motor + variable Ordinary motor + variable
General-purpose motor frequency motor frequency motor frequency motor Servo motor
Motor power/kW 0.25 0.25+0.25 0.55+0.55 2×1.1 2×1.0
.
-1
Motor speed (r min ) 840~910 840~910 1 300~1 390 1 300~1 390 2 000
Rated pressure (MPa) 32 32 32 64 64
High-pressure pump + Plunger pump and
Pump type plunger pump plunger pump plunger pump
distributor distributor
Determination of the 16~30 or determined by
Number of oiling points 8~15 16~30 16~30
number of dispensers the number of dispensers
The distributor port 0~0.38 or determined by
Oil output per point/mL/ 0~0.23 0~0.23 0~0.38 determines (total oil the distributor port (total
time output is approximately oil output is approximately
151 mL/min) 151 mL/min)
Process oil and lubricating
oil are injected separately, The oil output can be
Integrated lubrication
Remarks It can refuel automatically and the speed of the With flow rate and center, higher oil pressure adjusted according to the
pressure alarm
process oil pump can be working conditions
adjusted
2 The function and working principle of grease pump (see Figure 1), but there are also some equipped
the lubrication system with multiple electric grease pumps depending on different
2.1 Grease lubrication system lubrication points. The appearance of the electric grease pump
Most internal mixers are equipped with only one electric is shown in Figure 1, and it is generally fixed near the internal

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