4.2 PF60 series hydraulic unit and field circuits (1).pptx

pf filter

1. PF 60 series hydraulic unit and field circuits Hydraulics overview of PF

2. Learning objectives 7/11/2023 PF Customer Training 2 After the module the participant is able to: Understand the hydraulically operated functions of PF filters Recognize the different hydraulic power units (HPU) and the field components

3. Agenda 1 2 3 PF series Hydraulic System comparison PF60 Hydraulic Power Unit PF60 Hydraulic circuits 7/11/2023 PF Customer Training 3

4. 1. PF series hydraulic system comparison Hydraulics overview of PF 7/11/2023 4 PF Customer Training

5. PF series hydraulic system comparison 7/11/2023 PF Customer Training 5 PF series *not in active sale Series Filtration area (m²) Plate area (m²) Cloth Closing Diaphragm pressing media Hydraulic unit New hydraulic unit PF 1.6 (Mini/ Minimax ) 1.6-12.6 1.6 rewinding With quick acting Cylinders, No columns and locking pins water Rexroth with A10VSO-71 pump PF 12 (PFH/ Mid Size) 9.5-32 1.6 continuous Quick acting cylinders, columns and locking pins with sealing cylinders water Hydoring with A10VSO-71 pump PF 15 (New mid Size) 15-50 2.5 continuous active hydraulics (no columns) air Hydoring with A10VSO-140 pump PF 30* ( PoweRex , PEX) 30-60 6.0 rewinding Quick acting cylinders, columns and locking pins without sealing cylinders air Rexroth with SYDFEE-2X/140 pump PF 48 48-168 6.0 continuous Quick acting cylinders, columns and locking pins without sealing cylinders air Rexroth with A4VSO-250HS4 & A10VSO-45 pumps Rexroth with LA15VSO-280 & A10VSO-28 pumps PF 60 (Power PF) 60-144 6.0 continuous Quick acting cylinders, columns and locking pins with sealing cylinders air Rexroth with A4VSO-250HS4 & A10VSO-45 pumps Rexroth with LA15VSO-280 & A10VSO-28 pumps PF 180 180-234 9.0 continuous Quick acting cylinders, columns and locking pins with sealing cylinders air Rexroth with LA15VSO-280 & A10VSO-100 pumps

6. 2. PF60 Hydraulic Power Unit (HPU) Hydraulics overview of PF 7/11/2023 6 PF Customer Training

7. PF60 Hydraulic Power Unit 7/11/2023 PF Customer Training 7 HPU Hydraulic Power Unit

8. PF60 Hydraulic Power Unit 7/11/2023 PF Customer Training 8

9. PF60 Hydraulic Power Unit 7/11/2023 PF Customer Training 9 HPU Hydraulic Power Unit Connections to the reservoir : - P1 suction line - P1 control valve leakage line - PR01 leakage line - Tank line (T) - P1 leakage line - P3 suction line - P3 leakage line and accumulator safety valve tank line

10. PF60 Hydraulic Power Unit 7/11/2023 PF Customer Training 10 HPU Hydraulic Power Unit Clean Side: Pumps Valves Accumulator Adjustments Instruments Access points Dirty Side: Motors Cooler

11. PF60 Hydraulic Power Unit 7/11/2023 PF Customer Training 11 HPU Pressure Gauges Pump P1 0…290 bar (PR1) P3 Field 130 bar (PR01) P3/ Accu 220 bar (PR3)

12. PF60 Hydraulic Power Unit 7/11/2023 PF Customer Training 12 HPU Terminal box X5

13. PF60 Hydraulic Power Unit 7/11/2023 PF Customer Training 13 Reservoir The reservoir, volume of 600 liters (161 GAL) provides the storage for the hydraulic fluid.

14. PF60 Hydraulic Power Unit 7/11/2023 PF Customer Training 14 Reservoir components Visual indicator for fluid level LE and thermometer TM for temperature. Air breather AF with 3 micron filter

15. PF60 Hydraulic Power Unit 7/11/2023 PF Customer Training 15 Reservoir components The fluid level is monitored with transmitter B501 and temperature with transmitter B601, which are integrated into same device.

16. PF60 Hydraulic Power Unit 7/11/2023 PF Customer Training 16 Reservoir components The hydraulic fluid temperature is controlled with forced air cooler (OC) and electric oil heater (HE).

17. PF60 Hydraulic Power Unit 7/11/2023 PF Customer Training 17 Reservoir components Safety thermostat S601 will stop the system if oil temperature is too high.

18. PF60 Hydraulic Power Unit 7/11/2023 PF Customer Training 18 Reservoir components Return fluid to the tank is passing through the filter cartridge RF. The cartridge condition is monitored by differential pressure switch S410.

19. PF60 Hydraulic Power Unit 7/11/2023 PF Customer Training 19 Reservoir components Fluid fill quick connector is located on top of the return filter

20. PF60 Hydraulic Power Unit 7/11/2023 PF Customer Training 20 Reservoir components Manual service valves SV1 (P1) and SV3 (P3) for pump isolation. Equipped with sensors S821 and S823 to prevent dry run. Hint! Close these valves before oil change. Saves you from pump priming!

21. PF60 Hydraulic Power Unit 7/11/2023 PF Customer Training 21 Power Generation P1 – Main Pump P3 – Aux Pump

22. PF60 Hydraulic Power Unit 7/11/2023 PF Customer Training 22 Power Generation QAC cylinders Sealing cylinders Cloth driving motors Charge the accumulator Pinch valves Locking pins Cloth tracking cylinder Cloth tensioning device Cake chute flaps ( optional ) Pilot pressure for QAC, sealing cylinder , cloth driving motors and QAC balancing directional valves P1 – Main Pump P3 – Aux Pump

23. PF60 Hydraulic Power Unit 7/11/2023 PF Customer Training 23 P1 – Main pump Rexroth A4VSO250HS4/30R-PPB13K26 variable displacement axial piston pump Size   250   Nominal pressure p N 350 bar Peak pressure p max 400 bar Displacement V g max 250 cm³ Speed 1) n max 1500 rpm Flow at n max q V max 375 l/min Power Δ p = 350 bar P max 219 kW Torque Δ p = 350 bar T max 1391 Nm Weight (approx.)   m 184 kg

24. PF60 Hydraulic Power Unit 7/11/2023 PF Customer Training 24 P1 – Main pump controls VT-VPCD Controller & HS4 Proportional Valve

25. PF60 Hydraulic Power Unit 7/11/2023 PF Customer Training 25 P3 – Aux pump Rexroth A10VSO45DFR1/31R-PSA12N00 variable displacement axial piston pump Size   45   Nominal pressure p N 280 bar Peak pressure p max 350 bar Displacement V g max 45 cm³ Speed 1) n max 2600 rpm Flow at n max q V max 117 l/min Power Δ p = 280 bar P max 55 kW Torque Δ p = 280 bar T max 200 Nm Weight (approx.)   m 21 kg

26. PF60 Hydraulic Power Unit 7/11/2023 PF Customer Training 26 Power storage – Accumulator Energy reserve for locking pin and pinch valve lines Bladder type Nitrogen gas as medium Pre-charging pressure approx. 90 bar Accumulator Accumulator safety valve ASV1 Accumulator drain valve

27. PF60 Hydraulic Power Unit 7/11/2023 PF Customer Training 27 Pressure release for accumulator NOTE! Always empty the accumulator when you need to disconnect hydraulic lines or components! Pressure release valve screw P3/ Accu pressure

28. PF60 Hydraulic Power Unit 7/11/2023 PF Customer Training 28 HPU Hydraulic Power Unit

29. 3. PF60 Hydraulic Circuits (Field) Hydraulics overview of PF 7/11/2023 29 PF Customer Training

30. PF60 hydraulic circuits 7/11/2023 PF Customer Training 30 External devices

31. PF60 hydraulic circuits 7/11/2023 PF Customer Training 31 HC5.* Quick Action Cylinders QAC Balancing

32. PF60 hydraulic circuits 7/11/2023 PF Customer Training 32 Quick action cylinders (QAC) valve block

33. PF60 hydraulic circuits 7/11/2023 PF Customer Training 33 Locking , centering , balancing (LCB) valve block LCB valve unit Locking pins Cloth tracking QAC balancing

34. PF60 hydraulic circuits 7/11/2023 PF Customer Training 34 Directional valve (DV) block Cloth Tension QSCDT Valve Unit – Cloth Drive End Cloth Drive Sealing Quick Action Cake chute flaps (opt.)

35. PF60 hydraulic circuits 7/11/2023 PF Customer Training 35 Quick action cylinders QAC QAC Hydraulic Cylinders HC5.1, HC5.2, HC5.3, HC5.4 Counter balance valve CB51 Pressure reducing valves PR51 and PR 52 Piloted directional valves HV51 and HV52

36. PF60 hydraulic circuits 7/11/2023 PF Customer Training 36 Quick action cylinders QAC Directional valve HV511 with solenoid Y511 ( balancing ) in LCB block Piloted directional valve HV5 with solenoids Y51 ( plate pack opening ) and Y52 ( plate pack closing ) in DV block

37. PF60 hydraulic circuits 7/11/2023 PF Customer Training 37 Adjustment of valves in QAC block Adjustment of pressure reducing valves PR51 and PR 52 The upper press plate has to be locked down or up position. If you are starting up the filter for the first time or quick action cylinders have been lacking of oil , down position is easier for moving to next phase under control . Check that the hydraulic pump pressure setpoint is over the regulated value of the PR valves (PR1 100 bar ). Ask your assistant to climb on the top of the upper frame and turning the pressure reducing valves according your instructions . PR 51 Drive the plate pack upwards with hand held unit in HC5&BAL position. Observe the pressure from the hydraulic unit pressure gauge or from the OIU and ask the assistant to turn the adjustment screw of the valve until the setpoint 100 bar is reached and tighten lightly the locking nut . PR 52     Drive the plate pack downwards with hand held unit in HC5&BAL position. Observe the pressure from the hydraulic unit pressure gauge or from the OIU and ask the assistant to turn the adjustment screw of the valve until the setpoint is 55-60 bar and tighten lightly the locking nut . The pressure loss in counter balance valve CB51 located in return line is 5 % and this has been taken in to account in the setpoint value .

38. PF60 hydraulic circuits 7/11/2023 PF Customer Training 38 HC6.* Locking pin cylinders

39. PF60 hydraulic circuits 7/11/2023 PF Customer Training 39 Locking pin cylinders Hydraulic cylinders HC6.1 and HC6.2 Directional valve HV6 with solenoids Y61 ( unlocking ) and Y62 ( locking ) in LCB block

40. PF60 hydraulic circuits 7/11/2023 PF Customer Training 40 HC7.* Sealing Cylinders

41. PF60 hydraulic circuits 7/11/2023 PF Customer Training 41 Sealing cylinders (SC) valve unit SC Valve unit – Underneath the sealing plate Sealing pressure safety switch S860 Sealing pressure transmitter B472 Check valve CV72 Hydraulic cylinders HC7.1 … HC7.8 Piloted directional valve HV7 with solenoids Y71 ( unsealing ) and Y72 ( sealing ) in DV block Pressure reducing valve PR7 in DV block

42. PR8 PF60 hydraulic circuits 7/11/2023 PF Customer Training 42 Adjustment of valves in DV block Adjustment of HV directional valves To avoid pressure hits in hydraulic lines the function speed of the valves can be altered by the control screw located under and backside of the control valve. Therefore control screws are not seen in the photo . Adjustment of sealing cylinder pressure reducing valve PR7   If the sealing pressure setpoint in the programme (70-80 bar ) is not reached , check the function of the pressure reducing valve. During the adjustment the setpoint in the programme must be higher (100 bar ) than the regulated setpoint of the pressure reducing valve . Close and lock the plate pack . Drive the sealing cylinders upwards ( sealing ) by the hand held unit position HC7 and observe the pressure gauge PG1 from the hydraulic unit . Tighten or loosen the control screw until the desired pressure setpoint is reached . HV8 HV5 HV7 PR7 HV9

43. PF60 hydraulic circuits 7/11/2023 PF Customer Training 43 HM9.* Cloth Drive Motors

44. PF60 hydraulic circuits 7/11/2023 PF Customer Training 44 Cloth driving motors Pressure release valves PR9 Cloth driving motors HM9.1…HM9.8

45. PF60 hydraulic circuits 7/11/2023 PF Customer Training 45 Cloth driving motors Cloth driving motors are equipped with pressure release valve between A and B lines . The valve opens if adjusted max pressure ( moment ) is exceeded . This can happen when heavy cakes are tried to discharge and cloth is elonging . Cloth pulling force can be increased by tightening the valve, but the valve must be disconnected for adjustment . Maximum pressure 190 bar must not be exceeded in the motors . The hydraulic system maximum pressure is 280 bar but the pressure difference between hydraulic lines A and B is 140 bar in series connected motors . Pressure release valve PR9 Leaking oil connection Hydraulic lines A and B

46. PF60 hydraulic circuits 7/11/2023 PF Customer Training 46 Cloth driving motors Flow divider valves Piloted directional valve HV9 with solenoids Y91 ( forward ) and Y92 ( backward ) in DV block Directional valves HV9.1 and HV9.2 for bypassing the flow divider valves

47. PF60 hydraulic circuits 7/11/2023 PF Customer Training 47 HM8 Cloth Tensioning Device

48. PF60 hydraulic circuits 7/11/2023 PF Customer Training 48 Cloth tensioning Pressure reducing valve PR8 in DV block Cloth tensioning hydraulic motor HM8, pressure gauge before the motor and restrictor valve in return line Directional valve HV8 with solenoids Y81 ( slackening ) and Y82 ( tensioning ) in DV block Throttling devices FC8 in DV block P2 T

49. PF60 hydraulic circuits 7/11/2023 PF Customer Training 49 Adjusting of cloth tensioning Cloth tensioning force Tensioning force is adjusted by the pressure reducing valve PR8 positioned under the directional valve HV8. The pressure can be checked from the gauge located in the hydraulic line before the motor . Cloth tensioning roller speed The speed of the tensioning roller can be adjusted for both directions by the restrictor valve FC8 located in the same DV block (the other adjusting knob is behind and not seen in the picture ) . The tensioning roller can be locked on the specific height with manual restrictor valve but can be still moved freely upwards . NOTE! REMEMBER TO OPEN THE RESTRICTOR VALVE BEFORE DRIVING THE CLOTH. PR8 Pressure gauge Restrictor valve FC8

50. PF60 hydraulic circuits 7/11/2023 PF Customer Training 50 HC10 Cake chute flaps (optional)

51. PF60 hydraulic circuits 7/11/2023 PF Customer Training 51 Cake chute flaps ( optional ) Pressure reducing valve PR10 in DV block Cake chute flap cylinders HC10.1 … HC10.4 Directional valve HV10 with solenoids Y101 ( closing ) and Y102 ( opening ) in DV block

52. PF60 hydraulic circuits 7/11/2023 PF Customer Training 52 HC4 Cloth Tracking Cylinder

53. PF60 hydraulic circuits 7/11/2023 PF Customer Training 53 Cloth tracking Pressure reducing valve PR4 in LCB block Cloth tracking cylinder HC4.1 Directional valve HV4 with solenoids Y41 ( tracking roller up ) and Y42 ( tracking roller down ) in LCB block Restrictor valves P2 T Check valves CV4

54. PF60 hydraulic circuits 7/11/2023 PF Customer Training 54 Adjusting of cloth tracking Adjustment of valve PR4 and the c loth tracking speed The pressure reducing valve PR4 is located in the upper frame of the filter in LCB block . Attach the pressure gauge to the measuring connector . Ask your assistant to drive the cloth tracking cylinder against its back end by hand held unit position HC4 (the cloth to left ). Check the pressure measurement and tighten or loosen the regulator screw of the PR4 until the setpoint 65 bar is reached . After that ask the assistant to drive the complete strike lenght of the cylinder back and forth once and measure the elapsed time . Tighten or loosen the restrictor valves until the time for the movement in both direction is about 5 s. PR4 Restrictor valve Connector for pressure gauge

55. PF60 hydraulic circuits 7/11/2023 PF Customer Training 55 Y0*, Y1* Pinch Valves

56. PF60 hydraulic circuits 7/11/2023 PF Customer Training 56 Pinch valves V02/V12 Feed valves V05 Wash water valve V06 Drying air valve V07/V17 Drain valves V08 ( optional ) V27 Replacement air valve V01 ( optional ) V10 ( optional ) V09 Cloth wash valve

57. Sequence diagrams for hydraulics 7/11/2023 PF Customer Training 57 Thank you for your attention! Do you have any questions?