Vane pump, direct operated Type PV7 A

Transcription

1 RE 1 /1. Replaces: Vane pump, direct operated Type PV7 A Nominal sizes 1 to eries 1X / X Maximum operating pressure 1 bar Displacement volume 1 to cm 3 H/A 17/9 Type PV7-1X/..RA1MA-... Overview of contents H/A/D 9/98 Type PV7-X/..RA1MA-... Features Contents Page Features 1 Ordering details, preferred types ymbols Function, section 3 Technical data Dynamic characteristics Characteristic curves to 8 Unit dimensions 9 Multiple pumps 1 to 1 Engineering guidelines for multiple pumps 1 Installation guidelines 1 Engineering and commissioning guidelines 1 Very short control times Low operating noise Mounting and connection dimensions to VDMA /1 and IO 319/ Good efficiency Long service life Adjustable displacement volumes by Bosch Rexroth AG, Industrial Hydraulics, D Lohr am Main All rights reserved. No part of this document may be reproduced or stored, processed, duplicated or circulated using electronic systems, in any form or by any means, without the prior written authorisation of Bosch Rexroth AG. In the event of contravention of the above provisions, the contravening party is obliged to pay compensation. This document was prepared with the greatest of care, and all statements have been examined for correctness. This document is subject to alterations for reason of the continuing further developments of products. No liability can be accepted for any incorrect or incomplete statements. PV7 A 1/1 RE 1 /1.

2 Ordering details PV7 R 1 A * eries Further details B = 1X in clear text (series 1 to 19) Zero stroke pressure range B = X V7/-1 (series to 9) = to bar 1 to 19; to 9: installation and connection 1 = to 1 bar dimensions unchanged V7/-1 Build size Nominal size = 1 to bar B N 7 = to 7 bar 1 cm 3 = 1 V7/ 1 cm 3 = 1 = 1 to bar cm 3 = = to bar cm 3 = 1 = to 1 bar Direction of rotation Adjustment device Clockwise (viewed on the drive shaft) = R = Adjustment screw (standard) Drive shaft 1) 3 = Lockable rotary knob Cylindrical drive shaft = A and scale (for B ) Cylindrical drive shaft with through drive = E 3 = Controller with lock (for B ) Pipe connections A = Direct operated uction and pressure connections = 1 eals Pipe thread to IO 8/1 Ordering examples: PV7-1X/-1RA1MA-1 M = NBR seals, suitable for mineral oil HLP to DIN 1 PV7-X/-RA1MA- Pump with customer specific settings: PV7-X/-RA1MA-1 K = FKM shaft seal (other seals from NBR) suitable for use with HETG and HEE pressure fluids to VDMA A/F + details in clear text: q V max = L/min; p zero stroke = 7 bar; The pump will be set to the required values. The optimum operating H-key with Material No. R9818 is included within the scope of supply. noise will be set at the required zero stroke pressure. Without any clear text setting information the flow and the zero stroke pressure As delivered the zero stroke pressure is set to the will be set to the relevant maximum values. smallest value! Preferred types (readily available) Type PV7-1X/-1RA1MA- PV7-1X/-1RA1MA-1 PV7-1X/-1RA1MA- PV7-1X/-1RA1MA-7 PV7-X/-RA1MA- PV7-X/-RA1MA-1 PV7-X/-RA1MA- PV7-X/-RA1MA-1 Material No. R9187 R9333 R99193 R R999 R9993 R999 R999 Further preferred types and standards can be found in the EP (tandard Price List). ymbols P L RE 1 /1. /1 PV7 A

3 Function, section P 9 1 Type PV7-1X/ A P L 9 1 Type PV7-X/ A... Type PV7...A hydraulic pumps are direct operated vane pumps with an adjustable displacement volume. The basically comprise of the housing (1), cover (), rotor (3), vanes (), stator ring (), compression spring (), adjustment screw (7) and control plate (8). For limiting the maximum flow, the pump is fitted with an adjustment screw (9). The driven rotor (3) rotates within the stator ring (). The vanes () which are guided in the rotor (3) are pressed against the inner running surface of the stator ring () by centrifugal force. uction and displacement process The chambers (1) which are required for the transport of the fluid are formed by the vanes (), the rotor (3), the stator ring (), the control plate (8) and the cover plate (). The chamber volume increases as the rotor (3) rotates and the chambers fill themselves with fluid via the suction channel (). When the largest chamber volume is reached, the chambers (1) are separated from the suction side. As the rotor (3) continues to rotate the connection to the pressure fluid side is opened, the chambers decrease in size and force the fluid into the system via the pressure port (P). Pressure control The stator ring () is held in its initial excentric position by spring (). The maximum operating pressure required in the system is set at the adjustment screw (7) via the spring (). The pressure which builds up due to the work resistance acts on the pressure side of the inner running surface of the stator ring (), against the force of the spring (). When the relevant pressure is reached, which is determined by the set spring force, the stator ring () is moved out of its excentric position in the direction of the zero position. The flow adjusts itself to the value which is being demanded at that time. When the highest set pressure, which has been set at the spring (), has been reached then the pump regulates the flow back to virtually zero. The operating pressure is maintained and only the leakage fluid is replaced. Losses and heating of the fluid is thereby minimised. PV7 A 3/1 RE 1 /1.

4 Technical data (for applications outside these parameters, please consult us!) Mounting style Flange mounting Pipe connections Pipe thread "G..." to IO 8/1 Installation haft loading Direction of rotation Optional Drive speed n min 1 9 to 18 Radial and axial forces cannot to taken up Clockwise (viewed on the drive shaft) Build size B Nom. size / displacement volume V cm Max. permissible drive torque T Nm 11 Max. flow 1) q V L/min (at n = 1 min 1 ; p = 1 bar; ν = 1 mm /s) Operating pressure, absolute Inlet p min-max bar.8 to. Outlet p max bar Leakage outlet p max bar Leakage flow at zero stroke q V L/min (at operating pressure, output = p max. zero stroke ) Pressure fluid HLP mineral oil to DIN 1 parat Please take the specifications stated within catalogue sheet RE 7 7 into account! Pressure fluid temperature range ϑ C 1 to +7, take the permissible viscosity range into account! Viscosity range ν mm /s 1 to 1 at operating temperature Max. 8 when starting under displacement conditions Max. when starting under zero stroke conditions Cleanliness class to IO code Maximum permissible degree of contamination of the pressure fluid is to IO class 19/1/13 ) Weight m kg ) Flow deviations due to manufacturing tolerances of a max. of + % is possible ) The cleanliness class stated for the components must be adhered too in hydraulic systems. Effective filtration prevents faults from occurring and at the same time increases the component service life. For the selection of filters see catalogue sheets RE 7, RE 7 and RE 81. Dynamic characteristics, measurement build-up (measured at n = 1 min 1, ν = 1 mm /s and ϑ = C) The control times are valid for the measurement build-up as shown. For other set-ups and line lengths the control times will change ) Permissible pressure peaks Control times (average value) t down / t up 1 Directional valve (switching time 3 ms) Throttle for setting the pressure during displacement 3 Hydro pump Pressure measurement point Pump type Operating pressure p bar t1 down t down Control down p N Time t Operating pressure p p N t1 up t up Control up 1 bar Time t q V displacement q V zero stroke q V zero stroke q V displacement Pressure p N bar t1 down t down p max 3) t1 up t up RE 1 /1. /1 PV7 A

5 Characteristic curves: type PV7/ 1, (measured at n = 1 min -1, ν = 1 mm /s and ϑ = C) A... 3, Flow in L/min 1 8 P displacement, 1, Drive power in kw P zero stroke A , Flow in L/min 1 8 P displacement, 1, Drive power in kw P zero stroke Noise pressure level Nosie pressure level in db(a) during displacement at zero stroke Measured in anechoic chamber to DIN 3, page Distance: Noise sensor pump = 1m PV7 A /1 RE 1 /1.

6 Characteristic curves: type PV7/ 1, (measured at n = 1 min -1, ν = 1 mm /s and ϑ = C) A... 3, Flow in L/min P displacement, 1, Drive power in kw P zero stroke 1 3 Flow in L/min A 7... P displacement 3,, 1, Drive power in kw P zero stroke Noise pressure level Nosie pressure level in db(a) during displacement at zero stroke Measured in anechoic chamber to DIN 3, page Distance: Noise sensor pump = 1m RE 1 /1. /1 PV7 A

7 Characteristic curves: type PV7/, (measured at n = 1 min -1, ν = 1 mm /s and ϑ = C) 3 Flow in L/min 1 1 A- P displacement P zero stroke Drive power in kw 3 Flow in L/min 1 1 A-1 P displacement 3 1 Drive power in kw P zero stroke Nosie pressure level Nosie pressure level in db(a) 8 during displacement at zero stroke Measured in anechoic chamber to DIN 3, page Distance: Noise sensor pump = 1m 7 1 PV7 A 7/1 RE 1 /1.

8 Characteristic curves: type PV7/, (measured at n = 1 min -1, ν = 1 mm /s and ϑ = C) A- Flow in L/min 1 1 P displacement P zero stroke 3 1 Drive power in kw Flow in L/min A-1 P displacement 3 Drive power in kw P zero stroke Nosie pressure level Nosie pressure level in db(a) Measured in anechoic chamber to DIN 3, page Distance: Noise sensor pump = 1m during displacement at zero stroke 1 RE 1 /1. 8/1 PV7 A

9 Unit dimensions (dimensions in mm) PV7/ 1 8, max 11, h 1 max 3 G 3/8, h9 Ø1 H13 ; 7 Ø8 h8, Ø j 3 P 1,, G 1/ G 1/ Ø11, ±, 1 17,7 197,7, ±,, ±, 9 7 PV7/ G 1/ G 1/ 3 Ø11 H Ø1h8 8 Øj P L 1 Ø1±, 8 h max 188 max 1 G 3/ 1 1 Flow adjustment Adjustment guidelines: With clockwise rotation, the flow decreases With anti-clockwise rotation, the flow increases Note: The change in flow for one turn of the adjustment screw is for: PV7/ approx. 7. L/min PV7/ approx. 1 L/min each at n = 1 min -1 Pressure adjustment Adjustment guidelines: With clockwise rotation, the operating pressure increases With anti-clockwise rotation, the operating pressure decreases 3 Pressure connection uction connection Drain port max Drive shaft 7 Pressure adjustment via adjustment screw (standard), ordering detail... 8 Pressure adjustment with lockable rotary knob with scale, ordering detail pace required to remove key 1 Lock PV7 A 9/1 RE 1 /1.

10 Multiple pumps Material No. combination parts Front pump V7-1X/ RE V7-X/ RE Rear pump PV7-1X/ R9889 R981 PV7-1X/1RE1M R981 PV7-X/ R9813 GF1-X/RH1VU R9878 PGF-X/ RJ R93373 R911 PGP-X/ RJ R93373 R911 PGH-X/ RR R93373 R911 PGH3-X/ RR R93373 R911 G-X/ RR R93373 R911 A1VO1..U R93373 R911 A1VO18..U R93373 R911 GF3-3X/RJVU R98887 PVV/Q1/-1XRJ1 R98887 R-1X/,,- WG R91 R-1X/1,,- RA R917 Ordering details for multiple pumps P V7/ - A + V7/ - A R E E Double = P First pump series First pump nominal size First pump controller econd pump series econd pump norminal size econd pump controller 1) For PGF and PGF3 First pump mounting flange econd pump connection port econd pump shaft version (if required) 1) First pump connection port First pump shaft version Direction of rotation Triple and quadruple pumps are coded analogue! Ordering examples: PV7/-A + V7/-1ARE1 + 1E PV7/-1A + GF/1RE1 + JE RE 1 /1. 1/1 PV7 A

11 Pump combinations PV7 + PV7 (dimensions in mm) B1 J9 L1 L L L L3 P Ø D H1 Ø D3 Ø D1 x D H13 L 1st pump B nd pump B L1 L L3 ØD1 ØD ØD3 D H1 B1 L L L M M M M Pump combinations PV7-1X/ + PGF / PGP / PGH / PGH3 / G / A1VO1 / A1VO18 (dimensions in mm) Mounting geometry to AE J 7 Flange 8- (AE A) Hub 1- (AE A) 13 plined hub /8 M1; 13 3,1 +,3 1, +, 13 1 / 3 DP; 9 T 1 Ø 8, PV7 A 11/1 RE 1 /1.

12 Pump combination PV7-X/ + GF1 (dimensions in mm) 177 L 7 L3 M1; 13 7 P 13,8 +,1 3,1 +,3 1, +, 13 Ø 1 F7 Ø 8, +, +,1 PGF1 nominal size L3 L Pump combinations PV7-X/ + PGF / PGP / PGH / PGH3 / G / A1VO1 / A1VO18 (dimensions in mm) Mounting geometry to AE J 7 Flange 8- (AE A) Hub 1- (AE A) plined hub /8 M1; 13 3,1 +,3 1, +, 13 1 / 3 DP; 9 T 1 Ø 8, RE 1 /1. 1/1 PV7 A

13 Pump combinations PV7-X/ + PGF3 / PGP3 / PVV1 / PVV / PGH / A1VO8 (dimensions in mm) Mounting geometry to AE 7 Flange 11- (AE B) Hub - (AE B) plined hub 7/8 1 / 3 DP; 13 T M , 1 Ø 11, X 1 splined hub DIN 81 Ø +, +, Pump combination PV7-X/ + R-Mini (dimensions in mm) Ø 3 +, +,1 x, H13 PV7 A 13/1 RE 1 /1.

14 Pump combination PV7/ + R-tandard (dimensions in mm) L1 L P 8 J9 8,3 +, Ø F7 Ø 3 +, +,1 Ø 8 +, +,1 x 9 H13 L L1 L L3 3/ pistons 1 pistons 3/ pistons 1 pistons 3/ pistons 1 pistons Engineering guidelines for multiple pumps The general technical data is the same as with the single pumps (see page ). The pump with the higher load (pressure x flow) should be the first pump stage. When combining several pumps, the torques produced can reach excessively high values. The sum of the torques must not exceed the permissible values (see table) ingle pump T 1 Combination pump T 1 T T max. T max ab T from max max. T max. T max 1st pump T ab1 from 1 T from nd pump T ab PV7 Max. permissible Build size Drive torque T max Output torque T ab max Combination pump: PV7/- + V7/- Required max. pressure: p n = 1 bar p V,19 T = (Nm) η hydr.-mech. 1,19 T 1. =,8 (Nm) Calculation example: V = Displacement volume in cm 3 η hydr.-mech. = Hydraulic mechanical efficiency T = Torque in Nm p = Pressure in bar T 1. =.8 Nm T from max T = T 1 + T = 93. Nm T max The combination pumps PV7/-.. + V7/-.. can be operated on the basis of the calculated data. RE 1 /1. 1/1 PV7 A

15 Installation guidelines Drive: Variant 1 MPU drive unit (is supplied completely assembled by ourselves) Electric motor and pump Fluid reservoir Match the service capacity of the reservoir to the operating conditions. The permissible fluid temperature must not be exceeded, if required, provide a cooler! Very short design Cost-effective solution (coupling and pump mounting bracket is not required) No assembly required For further information see RE 9-P Drive: Variant Electric motor + pump mounting bracket + coupling + pump Lines and connections Remove protective plugs from the pump. We recommend the use of seamless precision steel pipes to DIN 391 and removable pipe connections. elect the inside diameter of the pipes according to the ports. Throughly clean pipes and fittings before assembly. Piping recommendations (dimensions in mm) Leakage line Radial and axial forces on the pump drive shaft are not permitted! Motor and pump must be exactly aligned! Use flexible couplings min 1 min uction line Installation position Horizontal position preferred B3 min 1 min The leakage line is to be so fitted that the pump cannot drain! Under no circumstances must leakage and return fluid be directly taken up by the pump! B V1 Filter Whenever possible, use return line or pressure filters. (uction filter only in conjunction with low pressure switch/clogging indicator) Pressure fluid Please take the specifications stated within catalogue sheet RE 7 7 into account. We recommend brand name fluids. Do not mix hydraulic fluids of different types since this can result in decomposition and deterioration of the lubricating quality. The fluid must be replaced at regular intervals according to the operating conditions. In connection with this, the tank must also be cleaned of residues. PV7 A 1/1 RE 1 /1.

16 Engineering guidelines Comprehensive instructions and proposals can be found in the Hydraulic Trainer, volume 3 RE 81, "Planning and design of hydraulic power systems". When using vane pumps we recommend that the following guidelines are partically taken into account. Technical data All the technical data are dependent on manufacturing tolerances and are valid with certain operating conditions. Please therefore take into account that minor variations are possible and technical data can be affected by differing conditions (e.g. viscosity). Characteristic curves Characteristic curves for flow and absorbed power. Please take into account when dimensioning the drive motor the maximum possible application data. Noise The noise pressure level values given on pages to 7 are measured according to DIN 3 part. This means that only the noise emission of the pump is given. Ambient influences (such as place of installation, piping, etc.) are not taken into consideration. The values only refer to one pump. Attention! The power unit design and the influences at the unit s final place of installation, in general, result in the fact that the noise pressure levels lie to 1 db(a) higher than that of the pump alone. Leakage fluid On page the average external leakage of the pump is stated. Please note that these values are only intended for use as engineering guidelines when defining cooler sizes and pipe sizes. When determining the size of the oil reservoir the appropriate value to be used is the zero stroke power (see pages to 7). Changes in crosssection and the use of a leakage oil cooler can result in there being unpermissibly high pressure peaks in the leak-oil line. Commissioning guidelines Bleeding All of the PV7...A type vane pumps are self-priming. Before commissioning for the first time, the pump has to be bled so that it is protected against damage. During the first commissioning, we recommend that the housing is filled via the leakage connection. Take into account the filter rating! This increases operating safety and prevents wear in the case of unfavourable installation conditions. If the pump after approx. seconds does not displace oil without any bubbles then the system has to be rechecked. After the operating values have been reached, check the pipe connections for leakage and check the operating temperature. Commissioning Check to see if the system has been carefully, correctly and cleanly assembled. Take into account the motor and pump direction of rotation arrows. tart the pump without load and let is displace oil without pressure for a few seconds in order to provide sufficient lubrication. On no account let the pump run without oil! Important guidelines Adjustment, maintenance and servicing of the pump must only be carried out by authorised, trained and instructed personnel! Use only original Rexroth spare parts! The pump must only be operated within the permitted limits. The pump may only be operated in a sound condition! When carrying out any work on the pump (e.g. removing and refitting) switch the system to zero pressure and isolate from the mains supply! Unauthorised conversions and modifications which affect the safety and function of the pump are not permitted! Provide protective measures (e.g. coupling guard)! Do not remove any existing protective devices! The general valid safety and accident prevention regulations must be adhered too! Bosch Rexroth AG Industrial Hydraulics D Lohr am Main Zum Eisengießer 1 D-9781 Lohr am Main Telefon 93 / 18- Telefax 93 / Telex documentation@boschrexroth.de Internet Bosch Rexroth Limited Cromwell Road, t Neots, Cambs, PE19 E Tel: 1 8/ 3 Fax: 1 8/1 9 info@boschrexroth.co.uk The data specified above only serves to describe the product. No statements concerning a certain condition or suitability for a certain application can be derived from our information. It must be remembered that our products are subject to a natural process of wear and ageing. RE 1 /1. 1/1 PV7 A