Page 62 - 《橡塑技术与装备》英文版2026年3期

HINA R&P TECHNOLOGY AND EQUIPMENT

Figure 6 Distribution and application of electric heating technology in curing press components

The steam thermal valve groups designed, developed, and hand-pull valves, etc., as shown in figure 7.
manufactured by MESNAC can be broadly divided into two
forms in terms of structural style. One form is the single valve
connected through welded flange pipelines to achieve control of
the curing medium. That is, the valve + flange + pipeline form,
simply referred to as the traditional valve group mode. In the
traditional mode, the thermal valve group of the curing press
is divided into four parts: the external temperature inlet valve
group, the external temperature return valve group, the internal
temperature inlet valve group, and the internal temperature
return valve group. The other form is the integrated thermal
valve group, which designs the valve's switching function for
the medium inside the valve block. The valve block serves
both as a process flow channel and as a valve body. The valve
is an external pneumatic actuator that controls the valve's Figure 7 Steam-heated thermal pipeline
switching. Overall, the integrated thermal valve group of the
curing press integrates the four separately designed pipelines 4.2 Structure of electric heating component
The electric heating system designed, developed, and
of the external temperature inlet valve group, external
manufactured by MESNAC eliminates the boiler, auxiliary
temperature return valve group, internal temperature inlet
equipment, and thermal valve group system as shown in figure
valve group, and internal temperature return valve group into
8. The direct effect is the reduction of at least 6 circuits of 18
one valve group according to actual conditions, or integrates
various valves, simplifying the pipeline arrangement at the
the internal temperature inlet and return valve groups into one
rear of the equipment. The nitrogen circulation heating system
valve group, and integrates the external temperature inlet and
for electric heating mainly includes: regulating valve, pressure
return valve groups into one valve group. This form of pipeline
sensor, Roots blower, pressure sensor, nitrogen heating device,
integration and valve group integration is simply referred to as
temperature sensor, etc.
the integrated thermal valve group mode. Steam-type thermal
valve groups generally include shut-off valves, check valves,
filters, pneumatic diaphragm regulating valves, self-operated 5 Comparison of social benefits between
pressure regulating valves, solenoid valves, mechanical valves, electric heating and steam heating.

·16· Vol.52，No.3