1.  Summarization

The EMM078 series High Pressure machine is that our company follows the international’s advanced technological products, The Main parts are imported from foreign countries, technical and safety performance of the equipment has reached the advanced level of the same product of the same period abroad.

When developing the EMM series high pressure machine, Technology with the "best practices" "plug and play", all of the machine’s parts and module are installed at one frame, component’s pipes short, pressure small, precise at the temperature control, optimization of the control technology, improve the equipment’s reliability and the production’s quantity.

The EMM078-A20 High pressure machine has 1 POLY. barrel and 1 ISO. barrel, and two metering units drive by independence motors, through changing the metering pumps output to change the pumps output. This kind of machine is specially used in the polyurethane pouring products.

2.  Main parameters and descriptions for the equipment

2.1 Type: EMM078-A20                                                              

2.2 Suitable foaming system: soft foam, hard foam, simi-hard foam

2.3 Suitable material viscosity （22℃）:

polyol :  max. 800-6000 mPs

isocyanate: max. 5-200 mPs

2.4 Pouring output:  50~300g/sec (1:1), with ratio range adjustable 5:1~1:1

2.5 Pouring program time: 0.5~99.99sec

2.6 Inject the quantity of the procedure:

Manual inject: 9

Automatic inject: 99

2.7   Metering unit: Measurement accuracy≤0.5%

All the parts such as Shift motor, Gear metering pump, Bracket, Coupling is using to metering the components’ flowout.

2.8 Working pressure limit and control system

Both polyol and isocyanate side working pressure are allowed in a range of 6~22Mpa. Whenever the working pressure exceeds the range, the pouring operation will be stopped automatically and an alarm message of < working pressure abnormality > will be displaying on control panel at the same time.

The limit pressure of the metering pump is pre-settled as 25Mpa and with mechanical & electrical safety protection:

--- Mechanical protection: the relief valve function open whenever pressure reach 25Mpa,

--- Electrical protection: the metering unit emergency stop, audio alarm, and a message of display on panel screen.

The POLY. metering pump inlet pressure protection is pre-settled as 0.25Mpa, and the ISO. metering pump inlet pressure protection is pre-settled as 0.15Mpa. Whenever the inlet pressure lower than the preset value, the metering unit emergency stop, audio alarm, and a message of display on panel screen.

2.9 Components’ flow output control and testing units

Bases on the pump’s flowout and the components’ mixing inquery, set two parameters in the pouring course; the two metering units are drived by two independence motors , through change variable high-pressure displacement of the metering pump’s flow out to control the metering pump’s output.

2.10 Component filter: 

Two components furnished with filter separately, and the filters’ precision is 330μm. Rotate the axle of the filter and fixed blowdown regularly.

l      Out of the filter with digital pressure switch to protect the metering pump.

2.11 Hydraulic unit:

---hydraulic pump output: 23L/min

---motor power:  7.5kw

---motor speed:  1450rpm

---oil tank volume: 80L

--- 1 integration board covered the tank which installed with drive motor, pump, flexible coupling, and an integration block including boost valve, limit valve, gauge, pressure switch and manual relief valve, etc.

--- 1 accumulator 6.3L

--- 1 return oil filter

--- 1 set of cooler with cooling water valve ensure oil temperature not too high (≤40℃) when continuously running

--- 1 oil level visual display meter

--- 2  NG10 solenoid apart valve for L type  mixing head control and main piston

2.12 High pressure Mixing head     1  piece

L-shaped mixing head, produced with Korean’s DUT technical, including nozzles and sensors in it. In order to make sure the mixing purpose, use V-shaped jet, in order to ensure adequate mixing.

2.13 Jib arm   2000mm

For hanging mixing head and the pouring button panel as well as the hoses and cables connection to mixing head.

l      The mixing head hung up at flatly

l      rotary angle range: 160⁰

2.14  High/low pressure switch-over unit

      Make components form low energy cycle, and separately the high and low pressure circulation cut unit.

2.15  Polyol Tank      1  piece

l        Effective volume: 250 liters;

l        Intermediate layer type, High quality steel material;

l        The greatest working pressure: 0. 60MPa;

l        1 safety valve, establish working pressure 0. 30MPa;

l        A relief valve , it can set the working pressure 0. 50MPa;

l        A relief pressure valve with manometer, it. can set the working pressure0. 30~0. 50MPa ,and controls the material pot and compresses the air and enters atmospheric pressure strength at most;

l        Automatic filling mouth installed with ZG3/4"one-way valve and Pneumatic change-over switch;

l        Export the mouth and install two manual stop valves through the three direct links (the stop valve of the bypass is used in blow down among them);

l        Content gauge: magnetic control content gauge, with visual level

l        With tube type heat exchanger

l        Temperature sensor: PT100

l        Machine airproof beater: power 0.75KW, rotational speed 46rpm; Technological requirement that airtight enough satisfactions foams;

l        With heat preservation outside.

2.16 ISO Tank     1 piece

l        Effective volume: 250 liters;

l        Intermediate layer type, the high quality stainless steel material inside;

l        The greatest working pressure: 0. 60MPa;

l        1 safety valve, establish working pressure 0. 30MPa;

l        A relief valve , it can set the working pressure 0. 50MPa;

l        A relief pressure valve with manometer, it. can set the working pressure0. 30~0. 50MPa ,and controls the material pot and compresses the air and enters atmospheric pressure strength at most;

l        Automatic filling mouth installed with ZG3/4" one-way valve and Pneumatic change-over switch;

l        Export the mouth and install two manual stop valves through the three direct links (the stop valve of the bypass is used in blow down among them);

l        Content gauge: magnetic control content gauge, with visual level

l        With tube type heat exchanger

l        Temperature sensor: PT100

l        Machine airproof beater: power 0.75KW, rotational speed 46rpm; Technological requirement that airtight enough satisfactions foams;

l        With heat preservation outside.

2.17 Temperature control unit

For each component processing temperature control.

l        heating capacity : 6KW

Cooling unit【refrigerating output（Kcal/h）】: 13500

              Two heating units control the tanks’ heating, Achieves the automatic control foaming raw material temperature technological requirement through the cooling unit. Cooling unit is with 5HP compressor,hydraulic pressure is 025MPa.

2.18  Electrical control system

Using Siemens PLC to control the input and output, convenience to operate. The main parts are imported abroad, so to make sure the control system’s safety.

Functioning description:

--- manual function, for test commissioning

--- automatic function, for normal operation

--- dry pouring function, for test pouring operation

--- wet pouring function, for normal pouring operation

--- auto-circulation function, for long time stop of the machine while the materials still in the tank

--- parameters set function, on the panel

--- protection function: with audio and visual alarm and malfunction message display on screen, as well as emergency stop if necessary.

The electric cabinet including:

l        Siemens series PLC controller

l        Omron Relays

l        Schneider contactor

l        Siemens Frequency convertor

l        Schneider Switches, buttons

l        Communication interface

l        Soft ware of PLC program

2.19  Piping system

    Including a tube and hydraulic pressure of all kinds of groups are in charge of, is used for sending a group of material and hydraulic oil respectively.

2.20  Others

power supply:  3× 380V/50HZ

Input power:  36KW  about

Weight: 2800KG  about

Ground dimension: Awaiting

3. System configuration of EMM078-A20 high pressure machine

3.1 Two Components High Pressure Foaming Machine Configuration list