Energy-Saving Hopper

Outstanding energy-saving performance
Reduce energy consumption of the entire workplace

- Thermal efficiency has been boosted
  by incorporating a heat exchanger into the hot air drying system
- Exceptional energy-saving performance is obtained by reducing power consumption
  and decreasing air conditioning demand by minimizing waste heat.
- Long life and energy-saving because of ceramic heaters
- More stable temperature control owing to SSC heater control
- #400 polished SUS304 inside of the drying drum

Heat Exchange System

■ High performance heat exchanger incorporated

Dryers of the NF series incorporate a newly developed purpose-specific heat exchanger of high heat exchanging efficiency. The hot air used to dry resin is cooled by an intaken outside air which absorbs the heat thus ensuring release at low temperature. Because heat energy is circulated inside the dryer, the system greatly reduces power consumption and lessens the amount of heat exhausted into the workplace.

■ Heat Exchange System

A system has been adopted to exchange heat by feeding hot air exhausted from the drying drum and outside air sucked in by the blower through a heat exchanger of high thermal conductance. Stock is dried using a continuous supply of hot circulating air.

Open conveying system

■ Open conveying system

The open conveying system draws in secondary air from suction nozzles to provide secondary conveyance to the molding machine. Together with a simple mechanical structure, the system is economical.

Inspection of the energy-saving effect

■ High energy-saving performance

Because drying air is warmed first by the heat exchanger, heater power consumption is greatly reduced. Power consumption is greatly reduced in comparison to competitor dryers of the same loading capacity.

■ Energy-saving effect felt across the entire work floor

The hot air after drying is cooled by the heat exchanger before release into the factory, therefore the rise in room air temperature is kept down, hence reducing air conditioning demand. The energy-saving effect is high when several NF series machines are introduced throughout the factory.

■ Easy maintenance

The drying drum is structured with wide openings at the top and side so that stock loading and maintenance are speedy and easy.

2-stock suction valve
Controller for 2-stock suction valve
Line filter GF-20-002
Compact rotating lamp (Pedestal type)
Compact rotating lamp (Direct coupling type)
Integrated signal tower

■ Stock feeding to 2 -- 4 molding machines

The NS series can supply dried resin stock to 2 -- 4 molding machines using multiple feed branch lines and air branch valves.

■ Higher powered blower

Feed blower capacity can be increased if the standard dryer has trouble supplying molding machines because of longer conveying distances or heavy resin weights.
Not applicable the NF-15.
The standard conveying distance is given for one-way suction of PC over a STOLZ hose.

NF-25 -- NF-75NF-100, NF-150
Conveying distancem1020
Performance increasing rate%5050

■ 2-stock suction valve  ZB-13

Two types of stock such as virgin material and crushed material can be simultaneously loaded into the same dryer using the ZB-13 branched suction valve. And, the ZB-13 can be externally connected to a dedicated independent controller. This makes it easier to monitor suction status, etc.
 2-stock suction valve  ZB-13

■ Low stock level gauge

Material depletion in the drying drum caused by trouble in dryer feed (primary loading) is signaled by a buzzer and warning lamp (ordered separately). See “Warning lamp” to choose a warning lamp.

■ Line filter  GF-20-002, GF-25-002

A line filter can be installed on the molding machine hopper to thoroughly remove dust. Applicable models are GF-20-002 and GF25-002. The GF25-002 incorporates powerful magnets for removing even iron dust.
 Line filter  GF/GX

■ Hopper plate and attachment for installation on molding machine

An installation plate and attachment are separately needed to install the hopper on molding machines that do not meet the standard specifications shown in the table, therefore indicate those specifications when ordering.

Bolt pitchmm58 x 5880 x 80
Bolt standardM6 x 4M8 x 4
Feeding port dia.mm3850

■ Top-down feeding line

Dried stock can be fed to molding machines (secondary conveying) from above.

■ 100 V operating circuit

Operating circuit voltage is changed to 100 V to increase safety.

■ Hose

Specify hose length for non-standard applications.

■ Molding machine hoppers

Select molding machine hoppers of nonstandard sizes and configurations.
 Loder  LK    Hopper  ZH/ZM

■ Warning lamp

If requiring a warning lamp for the "Low stock level gauge", select from the below types.
Compact rotating lamp (Pedestal type): Can be pole-mounted (billed separately). Select from amongst 4 colors; Red/Yellow/Green/Blue.
Compact rotating lamp (Direct coupling type): Available with buzzer. Select from amongst 4 colors; Red/Yellow/Green/Blue.
Integrated signal tower: Signal tower built for LED lighting and flashing. Available in 1-, 2- and 3-color types with a buzzer. Select from amongst 5 colors; Red/Yellow/Green/Blue/White.

■ Power cable

The standard power cable is 4 m long, but other lengths are available.

■ Color

Provide samples if desiring colors other than the STOLZ standard color (shown in photos).

Copyright 2010  STOLZ Co., Ltd.  All Rights Reserved.
Company Profile
STOLZ Network
Overseas Factory
◆◆◆Products Lineup◆◆◆
Dehumidifying Dryer "DEZAT"
Energy-Saving Hot Air Dryer  NF
Hot Air Dryer  NC/ND/NE
Speed Dryer  NH/NJ
All-in-One Type Optical Resin Dehumidifying Dryer "RAPTOR" NX-E
All-in-One Type Dehumidifying Dryer "RAPTOR" NR-E
Low Speed Axial Crusher  "SCUTTER"
Weighing and Mixing Machine
Loader  LK    Hopper  ZH/ZM
Pellet Tank  KA/KV/KX
Mold Temperature Controller
Line Filter  GF/GX
Dehumidifying Dryer  NS
Dehumidifying Dryer
with Weighing/Mixing Hopper   NS-G
High Grade Dehumidifying Dryer   NS-V
Dehumidifying Dryer with N2 Gas Generator  NS-N
Optical Resin Dehumidifying Dryer   NX
Compact Optical Resin Dehumidifying Dryer  NX
Compact Optical Resin Dehumidifying Dryer
with N2 Gas Generator  NX-N
Compact Dehumidifying Dryer  NR
High Grade Low Speed Axial Crusher  SX
Low Speed Axial Crusher  SA
Gravimetric Dosing and Mixing Machine  BM
Sprue and Runner Return Machine  BF
Tumble Mixer  BK
Sprue and Runner Return Machine  BS
Mold Temperature Controller
with 2-step Sprue Temperature Switching Function
"Heat and Cool System"  TH
Digital Mold Temperature Controller  TA/TB/TC
High Accuracy, Compact
Mold Temperature Controller  TN
Pressurized Water Mold Temperature Controller  TY
2-Stock Suction Valve  ZB-13
Magnet Separator  ZE