DHV/DHVA
Contents
1. DC 24V Low Pressure M12 Connector For OMRON PnP Cleaning Piston Housing material High grade steel Only for MJ1 5 18GM N D V1 and NJ1 5 18GM E2 D V1 Sense face Ceramic Only for MJ1 5 18GM N D V1 and NJ1 5 18GM E2 D V1 Depending on equipment the voltage for operation can be changed 4 4 Circuit Diagram Notice Fig 17 Wires Type for PnP 3wires L Fig 19 3 Wires Type for NpN 3wires 1 BROWN L qeu 4 BLUE Fig 18 2 Wires Type 2wires DUT supplies PnP type Standard for sensor but please contact us if you want to use NpN type of sensor 18 COPYRIGHT C 2011 DUTKOREA Ltd ALL RIGHT RESERVED DHV DHVA101106 5 Choice of Mixing Head Throughput Pressure amp Mixing Ratio Notice The most important thing to maximize mixing efficiency is to choose suitable diameter of nozzle cone in applicable pressure 5 1 DUT have many types of Mixing Head You may choose applicable Mixing Head to fit your purpose 5 2 Firstly choose an optimum Mixing Head it is very important that you choose an optimal Mixing Head in order to maximize the effectiveness Namely you must determine the correct nozzle size for each reactive component and the optimum impingement pressure for each flow DUT suggest you can choose the applicable nozzle size and impingement pressure as the simplest method You can calculate the applicable2. LOCK NUT Wie x 4 7l y E SSSR ALA X py is Te 4 Z NC n ZMA E Ly LPS Um j amp K i Ve ADJUST Fig 12 Cleaning Side MIXING CHAMBER PISTON SENSOR MIXING CHAMBER PISTON J LOCK NUT SENSOR Fig 13 M C side Fig 14 MIC side For all DHV series except DHV 1422 4K For DHV 1422 4K COPYRIGHT C 2011 DUTKOREA Ltd ALL RIGHT RESERVED DHV DHVA101106 16 4 2 Schematic for DHVA series The assembly of sensor should be done at the torque of 6 8 Nm SWITCH DOG SENSOR n 110 fA p LOCK NUT THROTTLE ADJUST Fig 15 Cleaning Side MIXING CHAMBER PISTON LOCK NUT SENSOR Fig 16 M C for all DHVA series except DHVA 1425 COPYRIGHT C 2011 DUTKOREA Ltd ALL RIGHT RESERVED DHV DHVA101106 17 4 3 The models of sensor and specification for each mixing head Mixing head Code number Sensing Transistor Operation Static Dynamic Connection of P X sensor Distance Voltage Pressure bar DHV Series NJ1 5 18GM N D V1 1 5 mm 2 Wires Type DC8V 350 for namur M12 Connector amp DHVA s PEPPERL FUCHS Explosion Type MER NJ1 5 18GM E2 D V1 1 5 mm 3 Wires Type DC 24V 350 M12 Connector PEPPERL FUCHS PnP DHVA E2E X1R5F1 M1 1 5mm 3 Wires Type
3. Y M C PISTON EXTEND PX2 OFF Y TIME DELAY 0 3 0 5 Notice v CLEANING PISTON RETRACT v To prevent locking of Cleaning Piston Backward type is set as default It makes to be able to pouring even in trouble of sensor SD V V OPEN PX1 OFF Y CLEANING PISTON EXTEND v PX1 ON Y WAITING START All units in normal status TO WORK Each components are circulated by low pressure READY Each components are circulated to TO POUR tanks through nozzle and groove of piston rod with high pressure Flow rate and circulating pressure of each components are stabled POURING Pouring process POURING STOP High pressure recirculating CLEANING Low pressure recirculating END OF The end of one cycle ONE CYCLE COPYRIGHT C 2011 DUTKOREA Ltd ALL RIGHT RESERVED DHV DHVA101106 9 Forward Type for Cleaning Piston Notice Default is set as Backward Type so if you need to set as Forward Type please contact with a Production Engineering Team READY s START All units in normal status TO WORK Each components are circulated by low pres
4. nozzle size according to below equation d 0 378 Q NP d Diameter of Nozzle Cone mm Throughput of Each Component g sec P The desired Impingement Pressure bar The above mentioned equation is from our experience with electronic flow analysis DUT inform you should choose a slightly larger diameter than calculated diameter from equation above In accordance with some subject the minimum acceptable impingement velocity so as to mix in high pressure mixing head is 100 meters per second And they state that impingement velocities in order to get optimum efficiency will be needed to be 130 meters per second in processing high viscosity or hard to mix system COPYRIGHT C 2011 DUTKOREA Ltd ALL RIGHT RESERVED DHV DHVA101106 19 5 3 Adjusting Throughput and Pressure Fig 21 Metering Pump You already know nozzle diameter impingement pressure and throughput of each component And then you may adjust the pressure and throughput by rotating needle of nozzle and manual handle of pump COPYRIGHT C 2011 DUTKOREA Ltd ALL RIGHT RESERVED DHV DHVA101106 20 6 Adjusting Throttle Description below is to adjust throttle of your Mixing Head CLEANING PISTON SWITCH DOG SENSOR THROTTLE ADJUST When shipping all mix head will be settled the throttle to zero So you should adjust throttle to fit your purpose And we notice that you would not close the throttle too much 7 Calibrating Throughput If custom
5. 0 M12 135 M14 215 M16 330 COPYRIGHT C 2011 DUTKOREA Ltd ALL RIGHT RESERVED DHV DHVA101106 23 N ST R U N S md PA HI LI ST head should have to be wetted with Mesamol or DOP So before started supply lubricant into DO LUBRICANT INLET And this mixing head must be throughly cleaned by lubricant at the end of m USE TECHNOLOGY FOR MIXING HEAD DHV SERIES each shit Before starting to carry out any operation concerning this mixing head read manual exetremly and follow it JIN a OOS B PRING J 21 123 131 13 31 1 0 11111111111 59 SET SCREM NOB COPYRIGHT C 2011 DUTKOREA Ltd ALL RIGHT RESERVED DHV DHVA101106 24 Mixing Head Data Sheet To DUT KOREA Co Ltd FROM FAX NO 82 51 202 0647 CHARGE OF TEL FAX ISSUED DATE Mobile GENERAL DH d JL ILIL L K Serial No Purchasing date Brought from Foaming cycle sec Applicated on Rigid Flexible Semi rigid Total Output Pouring Time g sec Mixing Ratio A B 100 System manufacturer COPYRIGHT C 2011 DUTKOREA Ltd ALL RIGHT RESERVED DHV DHVA101106 25 Warranty and Service DUT KOREA provides a limited warranty to the original purchaser of DUT MIXING HEAD against any defects in material or workmanship for period of One year from the date of shipment from DUT KOREA facilities In the event a part is suspected to be defective in Mixing head or workmans
6. Explanation 1 Nozzle spraying method with double tilted angle for DHV series MIXING CHAMBER NOZZLEA 2 va 7 T 172777 e 1 a i CLEANING PISTON y VA f ec 2 78 Z I A LA pe LA 4 tA ANN 1 i 4 i ANN Page EET S i i LU i i d AM j j E A ae V M i j VM YA Wee THROAT X i LEN A RSS JE rj AA TLL TC T E t 1 f DL h f LAN a Z 4 BM NOZZLE B m Fig 11 Structural Explanation 2 The structure of double tilted angle in DHV series First offsetting the kinetic energy and fluid viscosity friction each other Second including very low kinematic energy after passing the throttle Third excellent mixing efficiency make laminar flow COPYRIGHT C 2011 DUTKOREA Ltd ALL RIGHT RESERVED DHV DHVA101106 15 3 Input lubrication agent In order to increase durability of Mixing Head supply space tube with release agent Inputting release agent makes it prolong maintenance period 4 Proximity Sensors Adopting proximity switch for reliability in DHV DHVA series In order to increase reliability of sequence proximity switches for high pressure are installed on cylinder respectively 4 1 Schematic for DHV series The assembly of sensor should be done at the torque of 6 8 Nm CLEANING PISTON SWITCH DOG SENSOR SS IY
7. OPYRIGHT C 2011 DUTKOREA Ltd ALL RIGHT RESERVED DHV DHVA101106 12 Forward Type for Cleaning Piston Fig 5 Recirculating Position POLYOL and ISOCYANATE are on circulating status Bypass valve is opened in status of low pressure and to pour it is closed in status of high pressure Fig 6 Ready to Pour While being changed to high pressure status cleaning piston moves backward to be ready for foaming When Cleaning piston moves back completely proximity sensor catches the piston then it makes moving the MC piston to backward Nozzle size makes POLYOL and ISOCYANATE output with the specified time and amount COPYRIGHT C 2011 DUTKOREA Ltd ALL RIGHT RESERVED DHV DHVA101106 13 Fig 7 Pouring Position When the mixed liquid POLYOL amp ISOCYANATE is outputted M C piston is closed and proximity switch becomes off After that Cleaning piston moves forward and doing self cleaning operation with letting the mixed liquid residue go out Fig 8 Ready to next Recirculation One cycle has completed and get ready to next recirculation COPYRIGHT C 2011 DUTKOREA Ltd ALL RIGHT RESERVED DHV DHVA101106 14 3 6 Hydraulic schematic Notice For DHV 1422 4K and DHVA 1425 4K Proximity PX sensor on M C is located as figure below but the others are located in opposite direction PT Fig 9 Hydraulic Circuit for Backward Type Fig 10 Hydraulic Circuit for Forward Type 3 7 Structural
8. User Manual DHV DHVA Series Solution for Polyurethane N O CONTENTS Specification 1 1 Throughput 1 2 Schematic 1 3 Operating Pressure Installation amp Connection 2 1 Mounting Type 2 2 Available Mounting Method 2 3 Before Installation Test Working Proximity Sensors 4 1 Schematic for DHV DHS Series 4 2 Schematic for DHVA Series 4 3 The models of sensor and specification for each mixing head 4 4 Circuit Diagram Choice of Mixing head 5 1 Throughput Pressure amp Mixing Ratio 5 2 Adjusting throughput and pressure Adjusting of Throttle Calibrating of Throughput Nozzles amp Nozzle Cone Requested Bolting Torque COPYRIGHT C 2011 DUTKOREA Ltd ALL RIGHT RESERVED DHV DHVA101106 2 WARNING In case of emergency during processing of PUR systems Eye contamination Rinse out immediately in an eyewash or water for several minutes consult a doctor Skin contamination Wipe off immediately with dry cloth wash skin thoroughly with soup and water Clothing contaminated by B component red drum should be changed immediately Breathlessness asthma chest pains Go immediately into the fresh air stop smoking relax If the cause is due to TDI B component indentified by skull and crossbones consult a doctor Spilt ISOCYANATE B component Cover spillage with sand or earth Pour neutralizing agent diluted ammoniac solution over residue If TDI is spilt respi
9. a com COPYRIGHT C 2011 DUTKOREA Ltd ALL RIGHT RESERVED DHV DHVA101106 26 914 4 Jangrim Dong Saha Gu Busan 604 040 Korea Tel 82 51 202 0586 Fax 82 51 202 0647 webmaster dutkorea com www dutkorea com COPYRIGHT C 2011 DUTKOREA Ltd ALL RIGHT RESERVED DHV DHVA101106 27
10. ers request dummy nozzle for calibration we may provide it This dummy nozzle acts a component not to flow in out mixing chamber So on calibrating Polyol part you should insert this dummy nozzle to iso side instead of regular nozzle assembly After calibrating Polyol part disassemble nozzle assembly of POLYOL part and insert another dummy nozzle in it and do aboves one more time for calibration of ISOCYANATE part Notice Dummy nozzle is not required for new virsion of DUT nozzle NDSN COPYRIGHT C 2011 DUTKOREA Ltd ALL RIGHT RESERVED DHV DHVA101106 21 8 Nozzles DUT has 3 kinds of Nozzle Please check your correct nozzle from figure below NN een a Wi x m EN ch ROS SS a E SSS eo Zw as 7930 PA Fig 23 NDSN Type LA Fe T N KQ SS SS t 277 EE SS Ny S Fig 24 NDCN Type a pres 9 E ARETE 2 de SEIN 2S 7 m 22 2 Fig 25 DHN Type COPYRIGHT C 2011 DUTKOREA Ltd ALL RIGHT RESERVED DHV DHVA101106 22 9 Recommended Bolting Torque 1 When assembly each parts of Mixing Head follow requested bolting torque as belows 2 When assembly or disassembly do it diagonal orderly 3 Please check each element not to come loose Thread Recommended bolting torque Nm Remarks M5 9 5 M6 16 M8 39 M1
11. es transformation of Mixing Head 4 Do not over tighten a bolt than the regular bolting torque Refer to requested bolting torque COPYRIGHT C 2011 DUTKOREA Ltd ALL RIGHT RESERVED DHV DHVA101106 7 3 Test Working Notice Before starting to carry out any operation of this head cleaning piston rod P No 06 on this mixing head has to be wetted by MESAMOL or DOP And before operating supply lubricant into lubricant inlet on the head and this Mixing Head must be thoroughly cleaned out by lubricant at the end of each shift 3 1 You should connect all fitting for hydraulic 2 components A and B and pigment For 3K Also you should connect 2 proximity sensors cable to control unit of your equipment 3 2 You should deflate air from cleaning cylinder and M C cylinder to work smoothly before operating To deflate air retract and extend cleaning piston for several times and fix cleaning piston on retract pouring position then retract and extend M C piston for several times by hydraulic 3 3 When operating of cleaning piston and M C piston check out if proximity sensors operate in normal COPYRIGHT C 2011 DUTKOREA Ltd ALL RIGHT RESERVED DHV DHVA101106 8 3 4 Pouring Sequence Backward Type for Cleaning Piston READY START v S D V V CLOSE v TIME DELAY v M C PISTON RETRACT v PX2 ON
12. hip it must be returned by the original purchaser freight prepaid If the part is found to be defective in Mixing head or workmanship as determined solely by DUT with a reasonable period of time following receipt of the defective part full credit will be issued to the original purchase for the freight charges incurred in returning the defective part and either credit will be issued for the replacement cost of the part or a replacement part will be forwarded no charge freight prepaid to the customer Replacement of parts defective in material or workmanship shall constitute complete fulfillment of DUT s obligations to the original purchaser No other warranties expressed or implied on any product it manufactures and or sells will be recognized by DUT unless aside warranty is in writing and approved in writing by an officer of DUT DUT shall not be held liable for any expenses resulting from loss damage or accidents caused by the misuse of Mixing head Caution We do not assure the problems as below In case of disassembly without DUT s bylaws Please never touch the parts with torque seal and rubber control Ifthe Elastomer is hardened on cleaning piston DUT do not assure the products The problem is negligence of operator Never forget to use Lubricant Contact Technical Support DUT KOREA 914 4 Jangrim Dong Saha Gu Busan KOREA Post Code 604 050 Tel 82 51 202 0586 Fax 82 51 202 0647 E mail webmaster dutkore
13. ic is 210 bar but 80 to 150 bar is recommended for stable operating For mixing between POLYOL and ISOCYANATE pressure is recommended from 100 to 180bar for best mixing efficiency 2 Installation amp Connection 2 1 Mounting Type TS a e f d pe x A Ei D is EF Alm With Han Ging on Clean Cylinder H With Front Grip on Outlet Pipe FG COPYRIGHT C 2011 DUTKOREA Ltd ALL RIGHT RESERVED DHV DHVA101106 5 2 2 Compatible Mounting Type Model BP FP FG H Remarks DHV 0507 DHV 0812 DHVA 0814 DHV 1014 DHVA 1016 DHV 1218 DHVA 1220 DHV 1422 DHVA 1425 DHV 1625 2 3 Before installation To use correct way of mixing head please check the descriptions as below 1 Do not tighten the end part of the head Outlet pipe to the mould by clamps or any other devices 2 The head must not be exposed over 90 C Deviation of the end part of head Outlet Pipe must be 10 COPYRIGHT C 2011 DUTKOREA Ltd ALL RIGHT RESERVED DHV DHVA101106 6 3 Heating to the end part of Mixing Head Outlet Pipe for disassembly is not allowed It caus
14. ratory masks should be worn on When handling A and B components protective gloves and goggles should be worn on at all times COPYRIGHT C 2011 DUTKOREA Ltd ALL RIGHT RESERVED DHV DHVA101106 3 1 Specifications 1 1 Throughput Close mould g sec Open MODEL Mould REMARK 1 1 2 1 3 1 g sec DHV 0507 2K 3K 15 210 20 180 30 120 15 120 50 430 60 330 70 290 50 250 LEGEND DHVA 0814 2K 4K DHV 1014 2K 3K 2K Single head DHVA 1014 4KSH waa oror Mane 3K Single head DHVA 1014 4KSHF pigment DHVA 1016 2K 4K Double head 130 1000 130 950 450 900 430 500 Angle head DHVA 1220 2K 2KF With 4 components DHV 1422 2K 4K 4KSH Single head SEVA doe dk 300 2500 420 2400 500 2150 300 850 DHV 1625 2K 4K 320 1650 340 1500 360 1450 400 1000 of hydraulic nozzles DHVA 1220 4K DENTS IK SU 130 1000 130 950 150 900 130 500 1 2 Schematic J YU RC 2 Components Mixing Head m 41 zi 3 Components Mixing Head Pigment Tube Type 3 Components Mixing Head Tubeless Type COPYRIGHT C 2011 DUTKOREA Ltd ALL RIGHT RESERVED DHV DHVA101106 4 1 3 Operating Pressure Maximum pressure for hydraul
15. sure START y y READY Each components are circulated to CLEANING PISTON SD V V RETRACT CLOSE TO POUR tanks through nozzle and groove of piston rod with high pressure Y M Flow rate and circulating pressure FAT ON TIME DELAY of each components are stabled v M C PISTON RETRACT Y POURING Pouring process PX 2 ON Vv M C PISTON EXTEND v PX 2 OFF POURING STOP High pressure recirculating v TIME DELAY 0 3 0 5 SEC Y CLEANING Low pressure recirculating CLEANING PISTON EXTEND SD V V OPEN v PX1 OFF T END OF The end of one cycle WAITING ONE CYCLE COPYRIGHT C 2011 DUTKOREA Ltd ALL RIGHT RESERVED DHV DHVA101106 10 3 5 Operation Principle Backward Type for Cleaning Piston Fig 1 Ready to Pour Proximity sensor catches the piston then it makes moving the MC piston to backward Bypass valve is closed and it changes to high pressure Nozzle size makes POLYOL and ISOCYANATE output with the specified time and amount Fig 2 Pouring Position When the mixed liquid POLYOL amp ISOCYANATE is outputted M C piston is closed and proximity switch becomes off COPYRIGHT C 2011 DUTKOREA Ltd ALL RIGHT RESERVED DHV DHVA101106 11 Fig 3 Recirculating Position After that Cleaning piston moves forward and doing self cleaning operation with letting the mixed liquid residue go out Fig 4 Ready to next Recirculation One cycle has completed and get ready to next recirculation C
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