Detailed Product Description
1. Summary:
The SJHG20 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.
We design our machine following the principle of combining technology and technique , for to meet the demand of "Best Practice" "Plug & Play”, all of the machine’s parts and module are installed on one frame, which requests much shorter pipes and saves the loss of pressure during the production process,which can ensure the flow meter accuracy and operation life. As well as,improve the safety of technology and quality of finished products.
The SJHG20 High pressure machine has 1 POLY tank and 1 ISO tank, and two metering units drive by independent variable frequency motors, through changing the metering pumps’ rotating speed to change the pumps’ output, which can execute the control both open-loop and close-loop. This kind of machine is specially used in the polyurethane pouring products.
2. Main parameters and descriptions for the equipment
2.1 Type: High pressure injection machine
2.2 Suitable foaming system: soft foam, hard foam, simi-hard foam
2.3 Suitable material viscosity (22℃):
polyol : max. 2,000 mPs
isocyanate: max. 1,000 mPs
2.4 Pouring output: 60~600g/sec (1:1)
50~410g/sec (2:1)
2.5 Mixing ratio range adjustable 5:1~1:5
2.6 Pouring program time: 0.5~99.99sec (Precision 0.01s)
2.7 Quantity of Injection programs
Manual injection: 9
Automatic injection: 99
2.8 Metering unit:
The metering unit is equipped for component’s high precision metering, including frame,vibration-abdorber, motor, pump, magnetic coupling, pressure relief valve and digital pressure switch for each component side.
Measurement accuracy≤0.5%
|
Component Material |
POLY |
ISO |
|
Quantity |
1 |
1 |
|
Metering Pump Type |
A2VK12 (12cc/rev) |
A2VK12 (12cc/rev) |
|
Power of motor(KW) |
5.5 |
5.5 |
|
Speed of motor(RPM) |
1450 |
1450 |
|
Pump sealing type |
Magnetic coupling |
Magnetic coupling |
2.9 Working pressure limit and control system
Both polyol and isocyanate components 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 displayed 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 safety valve overflows when pressure reaches 25Mpa;
---- Electrical protection: when the pressure reaches the pre-setted dangerous level ,the metering unit automatic stops, and send out the audio alarm, meanwhile a message of “pump over pressure” will display on panel screen.
The POLY. metering pump’s pre-pressure protection is pre-set as 0.25Mpa, and the ISO. Metering pump pre-pressure protection is pre-set as 0.15Mpa. Whenever the pre-pressure is lower than the pre-setted value, the metering unit automatic stops, and send out the audio alarm,meanwhile a message of “pump pre-pressure is too low” will display on panel screen.
2.9 Components flow output control and testing units
According to pumps’ delivery rate and the components’ mixture ratio technological requirement,
In pours in the procedure separately to establish two components the related parameters ; The two metering units are drived by two independent motors , and the flow out is adjustable while change the motor rotating speed;The coordinate metering pump adjustment handwheel and each one manual set valve separately carry on the adjustment to two components flowmeters parameter. Pertaining to components output flow automatic regulation and control through the use of the frequency converter or the servo controller.
2.10 Component Flters
Two components are equiped with meshy filter separately, and the filters’ precision reaches 330¦Ìm.It is requested to clean the filter on time and we recommend to replace the filter regularly so as to ensure the high precision.
--- The outlet part of filter equips with the digital pressure switch, which can protect the metering pump.
2.11 Hydraulic unit:
hydraulic pump output: 15L/MIN
motor power: 5.5 KW
motor speed: 1450 RPM
----1 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 oil return filter and a high pressure precision filter with signalling device.
---- 1 accumulator 6.3L
---- 1 set of cooler with cooling water valve so as to ensure oil temperature not too high (≤60℃) when continuous operation
---- 1 oil level visual display meter, for the indicate the oil level and temp
---- 2 NG6 electromagnetic Change Valve enable to control the opening and closing of the room of L-shaped mixing head and main piston separately.
2.12 High pressure mixing head
Mixing head :1 piece
L-shaped automatic cleaning mixing head, produced with Korean’s DUT technical, adopts the special needle adjustable pouring nozzle.In order to make sure the high quality mixing performance ,adopts the V-shaped injector nozzle, thus the material are mixed from two different directions.
---- The mixing head vertical handing
---- A operate box including: high-low pressure change switch, pouring button, 10 working position switch and emergency button.
2.13 Handing arm
For hanging mixing head and the pouring button panel as well as the hoses and cables connection to mixing head.
---- one spring balance device so as to ensure the freely up and down moving of the mixing head.
---- horizontal rotary angle range: 160℃
2.14 High/Low Pressure Recirculation Switch-over Unit
Hydraulis cobtrol,controls two components to be high, the low pressure circulation cut, causes the components to from the low energy consumption circulation.
A 4V210-08 pneumatic solenoid valve controls the high and low pressure circulation switchover of the 2 measurement units separately.
2.15 Polyol Tank 1 piece
---- Effective volume: 250 liters;
---- Material: Intermediate layer type, High quality carbon steel;
---- Working pressure max : 0. 60MPa;
---- 1 jacket safety valve, working pressure is setted as 0. 30MPa;
---- 1 safety valve, working pressure is setted as 0. 60MPa;
---- A pressure reducing valve with manometer, working pressure is setted as 0. 35~0. 40MPa ,which is also be able to control the max input pressure of the compressed air of the material tank
---- Automatic feeding port is installed with ZG 3/4” one-way valve and pneumatic change-over switch;
---- Export port is installed two manual stop valves through a three direct links (the stop valve of the bypass is used for cleaning);
---- Level meter: full scale ball magnetic reversible level meter, with the high level protection (the leverl show on the HMI, can set the levels for automatic feeding and stop feeding )
---- With pipe-type heat exchanger
---- Temperature probe: PT100
---- sealing agitator: power 0.75KW, rotational speed 46rpm; The tightness can sufficient to meet the demand of foaming technology.
---- With temperature insulation out of surface of the tank.
2.16 ISOTank 1 piece
---- Effective volume: 250 liters;
---- Material: Intermediate layer type, High quality carbon steel;
---- Working pressure max : 0. 60MPa;
---- 1 jacket safety valve, working pressure is setted as 0. 30MPa;
---- 1 safety valve, working pressure is setted as 0. 60MPa;
---- A pressure reducing valve with manometer, working pressure is setted as 0. 35~0. 40MPa ,which is also be able to control the max input pressure of the compressed air of the material tank
---- Automatic feeding port is installed with ZG 3/4” one-way valve and pneumatic change-over switch;
---- Export port is installed two manual stop valves through a three direct links (the stop valve of the bypass is used for cleaning);
---- Level meter: full scale ball magnetic reversible level meter, with the high level protection (the leverl show on the HMI, can set the levels for automatic feeding and stop feeding )
---- With pipe-type heat exchanger
---- Temperature probe: PT100
---- Mechanical sealing agitator: power 0.75KW, rotational speed 46rpm; The tightness can sufficient to meet the demand of foaming technology.
---- With temperature insulation out of surface of the tank.
2.17 Temperature control unit
For each component processing temperature control.
---- heating capacity : 2×3KW
---- Two heating units control the tanks’ heating, through the cooling unit to achieve the temperature requirement of raw material of automatic foaming technology.
---- Equip with one 5HP cooling machine,water pressure 0.25 Mpa.Air compressor adopts imported brand, including the professional cooling temperature controller, the operating switch is importation.
2.18 Electrical control system
The electrical control system of the machine is equiped with Simens Company’s series PLC S7 Series and input/output moudulars as wellas operation screen panel to ensure the raliablity and safety performance.
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 is in the tank
---- point moving function, for the high hardness foaming material, in case of the seizing of the cleaning column.
---- 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:
---- Siemens series PLC
---- Omron Relays
---- Schneider contactor
---- Siemens Frequency convertor
---- Schneider Switches, buttons
---- Outlet of Communication driver
---- System of software and PLC program
2.19 Piping system
Including all the separate components pipes and hydraulic pipes, to ensure the transportation of raw material and hydraulic oil.
2.20 Others
Power supply: 3 X380V/50HZ
Input power: 28KW (Appr)
Weight: 2300KGS (Appr)
Requirement of groud size : 2800mm×1380mm
2.21 Automatic filling system
---- 1 set of gear filling pumps for Poly.
---- 1 set of gear filling pumps for Iso.
---- Flowing speed:40L/min
