EP0329208A2 - Machine de nettoyage à haute pression entraînée hydrauliquement - Google Patents

Machine de nettoyage à haute pression entraînée hydrauliquement Download PDF

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Publication number
EP0329208A2
EP0329208A2 EP89200131A EP89200131A EP0329208A2 EP 0329208 A2 EP0329208 A2 EP 0329208A2 EP 89200131 A EP89200131 A EP 89200131A EP 89200131 A EP89200131 A EP 89200131A EP 0329208 A2 EP0329208 A2 EP 0329208A2
Authority
EP
European Patent Office
Prior art keywords
pressure cleaner
cleaner according
piston
pressure
water
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP89200131A
Other languages
German (de)
English (en)
Other versions
EP0329208B1 (fr
EP0329208A3 (en
Inventor
Ingo R. Dipl.-Ing. Friedrichs
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NERON SRL
Original Assignee
Neron Srl
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Application filed by Neron Srl filed Critical Neron Srl
Publication of EP0329208A2 publication Critical patent/EP0329208A2/fr
Publication of EP0329208A3 publication Critical patent/EP0329208A3/de
Application granted granted Critical
Publication of EP0329208B1 publication Critical patent/EP0329208B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • B08B3/026—Cleaning by making use of hand-held spray guns; Fluid preparations therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/14—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • F04B1/18—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders having self-acting distribution members, i.e. actuated by working fluid
    • F04B1/184—Cylindrical distribution members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/26—Control
    • F04B1/28—Control of machines or pumps with stationary cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
    • F04B9/10—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid
    • F04B9/109—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers
    • F04B9/111—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers with two mechanically connected pumping members
    • F04B9/1115—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers with two mechanically connected pumping members the movement of the pumping pistons in only one direction being obtained by a single-acting piston liquid motor, e.g. actuation in the other direction by spring means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B2203/00—Details of cleaning machines or methods involving the use or presence of liquid or steam
    • B08B2203/02—Details of machines or methods for cleaning by the force of jets or sprays
    • B08B2203/0205—Bypass pressure relief valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B2203/00—Details of cleaning machines or methods involving the use or presence of liquid or steam
    • B08B2203/02—Details of machines or methods for cleaning by the force of jets or sprays
    • B08B2203/0294—Wobbling swash plates for high pressure cleaners

Definitions

  • the invention relates to a hydraulically driven high-pressure cleaner with at least three pistons, on one side of which hydraulic oil is applied, which on the other side act on a second liquid to be displaced in a continuous manner, e.g. for the purpose of high pressure cleaning.
  • Pressure washers of the entire genus are known. These include a plurality of hydraulic pistons that drive a control in the middle and from there a plurality of water pistons that are connected to the hydraulic pistons. Since the use of external rubber seals to seal the pistons is required, a large installation diameter is required. Since in such cases the control system must be arranged between the piston surface acted on by the oil hydraulics and the water side, the radially required installation space is very large, especially since it increases quadratically with the radius; the longitudinal installation space is also increased as a multiplier of the stroke required as a result of the additional installation space, which leads overall to a large weight and volume of the machine.
  • the invention aims to design a generic cleaning device in an extremely light, compact and yet reliable manner in order to enable simple use with forklifts, agricultural tractors, construction machinery, trucks with on-board hydraulics, concrete mixers, etc.
  • a synchronizing rod (6) is arranged on each oil side of an axially movable and oil-hydraulically driven piston (2), which is connected to a rotating device (9-12) driving it so that the axial movement of the pistons ( 2) is converted into a rotary movement of the swash ring (12), the rotary device (9-12) driving a controller (22) which controls the hydraulic oil to and from the piston (2) in such a way that their axial movement is generated.
  • the rotating device (9-12) and the control (22, 51) can be radially enlarged considerably and housed in a freely available space which is usefully formed by the common circumferential circle of all pistons, including their seals.
  • you can the piston-cylinder-seal arrangements are placed next to each other as possible, so that a large rotating device (9-12) and control (22, 51) can be freely designed in such a way that the high synchronization forces are absorbed reliably.
  • the axial forces driving the rotating device (9-12) and control (22, 51) occur mainly as pulling forces only in one working direction, so that dangerous alternating forces are avoided and the machine life is thereby considerably increased.
  • the machine can be arranged so compactly with all internal parts so close together that all oil-hydraulic and water-side control elements can be housed so close together in the cylinder block (1) or valve block (50) that external piping, connecting pieces, assembly arrangements etc. can be avoided in favor of a totally integrated design.
  • the overall result is that the machine according to the invention is so compact, light and yet reliable that simple work with forklifts, agricultural tractors, construction machinery, trucks. With working hydraulics, concrete mixers etc. is possible as a small and handy implement.
  • the high-pressure cleaner according to the invention shown in FIG. 1 consists of a cylinder block (1) in which pistons (2) driven by oil hydraulics are arranged so as to be axially movable.
  • Pressure oil (23) is fed into the inlet opening (24) and via a connecting channel (25) to a controller (22), i.e. Via the circumferential channel (26), a connecting bore (27) to the pressure kidney (28) and from there to a control bore (29) and from there into the cylinder space between the right end of the piston (2) and the left end of the synchronizing rod (6) .
  • Perforated disc (9) is rotatably supported in the swash ring (12) by means of an inner bearing (11) which is held by circlips (16, 17).
  • Swash ring (12) on the other hand, is rotatably held on the outside by means of an outer bearing (13) between the cylinder block (1) and cover (14), and on the inside by means of a locking ring (15).
  • the swash ring (12) is set in rotary motion because of its inclined surface inclined to the left relative to the axis of rotation, which is on the drive shaft (19) by means of bolts (20) and from there to the control (22) by means of bolts (21) is transferred.
  • suction water (30) is sucked into the left-hand cylinder chambers via suction check valves (32) as soon as the piston (2) moves to the right. From there, the water is displaced to the outlet (34) via pressure check valves (33) as soon as the piston (2) is pushed to the left in the direction of the pressure and suction valves (32, 33). Since the driving hydraulic oil (23) is continuously fed into the machine, its inner parts also move continuously, whereby the pressurized water is also continuously displaced preferably by a number of three pistons (2) to the outlet (34).
  • a thrust washer (10) must be provided, which e.g. is held by the locking ring (18) and tumbles together with the perforated disc (9).
  • a ventilation duct (5) can be provided which releases any leakage into the atmosphere.
  • a pressure relief and / or unloader valve can be provided.
  • the pistons (2) and synchronizing rods (6) can also be connected by a radially and angularly movable joint in order to compensate for manufacturing tolerances and deformations.
  • the piston (2) can remain free of lateral forces, so that a "floating" piston arrangement is possible, i.e. the pistons are only guided in the seals (3, 4) and / or relatively narrow guides of the cylinder block (1) and / or guide rings located therein.
  • controller (22) can be replaced by any other controller, e.g. described in: "2nd Fluid Power Symposium, January 1971, Paper E4, BHRA, Cranfield, Bedford, England.”
  • Fig. 3 shows another embodiment of the invention, according to which the control (22) is replaced by a mushroom head (51) which is balanced by a compensating head (52) and is sealed in perforated disc (9) by means of seals (53, 54) and is pressed onto its counter surface by compression spring (55).
  • Figure 3 further shows an oil unloader (61-64) controlled by the water pressure spool system (70-74).
  • the oil pressure from chamber (65) acts on a ball (62) which opens against the force of spring (71), the force being transmitted via the water piston (72) and oil piston (63), so that the oil flow is largely depressurized discharges into channel (67). If the water pressure increases, the resulting force of the water piston (72) is added to the spring force so that the ball (62) is pressed more firmly into its seat in the insert (61) until the ball closes completely at maximum pressure.
  • the pressurized water (75) is shut off (e.g. by releasing a spray gun)
  • the pressure control valve (59) opens so that high pressure is maintained in the outlet (75) and chamber (76) while chamber 77 is depressurized. As a result, the water piston (72) remains in its left position against the force of the spring (71) and full oil relief occurs because the ball (62) can move freely to the left.
  • ball (62) can also be made to work in the opposite direction, i.e. by moving the ball seat to the other side of the ball.
  • ball (62) can also be made to work in the opposite direction, i.e. by moving the ball seat to the other side of the ball.
  • other directional control valves with piston tappets instead of balls can also be used.
  • piston axes of the machine according to the invention do not have to be parallel, but can also be arranged on a conical pitch circle (cone jacket).
  • water-side piston part and the oil-side piston part can be completely separate, but can also be made of one piece and coated.
  • the water-side piston part can be sealed by two soft seals, the space between which is connected to the suction side. This can also be done on the oil side.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Hydraulic Motors (AREA)
EP89200131A 1988-01-25 1989-01-24 Machine de nettoyage à haute pression entraînée hydrauliquement Expired - Lifetime EP0329208B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AT12888 1988-01-25
AT129/88 1988-01-25
AT128/88 1988-01-25
AT12988 1988-01-25

Publications (3)

Publication Number Publication Date
EP0329208A2 true EP0329208A2 (fr) 1989-08-23
EP0329208A3 EP0329208A3 (en) 1989-10-11
EP0329208B1 EP0329208B1 (fr) 1995-07-12

Family

ID=25591555

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89200131A Expired - Lifetime EP0329208B1 (fr) 1988-01-25 1989-01-24 Machine de nettoyage à haute pression entraînée hydrauliquement

Country Status (2)

Country Link
EP (1) EP0329208B1 (fr)
DE (1) DE58909333D1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1081953C (zh) * 1998-12-18 2002-04-03 中国科学院沈阳自动化研究所 一种海水冲洗装置
CN105179026A (zh) * 2015-10-10 2015-12-23 山东电力建设第一工程公司 汽轮发电机组润滑油系统的冲洗系统及冲洗方法
CN111255651A (zh) * 2020-03-02 2020-06-09 韩国昊 一种空压机

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2548501A (en) * 1947-08-19 1951-04-10 Hobson Ltd H M Hydraulic pump
DE900529C (de) * 1950-11-29 1953-12-28 Schweizerische Lokomotiv Pumpe mit im Kreise angeordneten parallelen Kolben und mit variabler Foerdermenge, die durch OEffnungen in den Zylinderwaenden mittels der Kolben gesteuert wird
DE921554C (de) * 1951-09-30 1954-12-20 Wilhelm Bussmann K G Hydraulische Hochdruckpumpe
US3133503A (en) * 1962-05-25 1964-05-19 Bendix Corp Hydraulic pressure transformer
US4286927A (en) * 1978-08-14 1981-09-01 Mcdonnell Douglas Corporation Hydraulic power transfer unit
US4363211A (en) * 1980-02-01 1982-12-14 The Boeing Company Quasi-open loop hydraulic ram incremental actuator with power conserving properties
WO1985001336A1 (fr) * 1983-09-12 1985-03-28 Beckman Instruments, Inc. Couplage de piston flottant pour pompes de type a plongeur
EP0149219A2 (fr) * 1983-12-28 1985-07-24 Speck-Kolbenpumpen-Fabrik Pompe à piston
EP0214749A2 (fr) * 1985-08-09 1987-03-18 Jse Corporation Injecteur d'eau à très haute pression

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2548501A (en) * 1947-08-19 1951-04-10 Hobson Ltd H M Hydraulic pump
DE900529C (de) * 1950-11-29 1953-12-28 Schweizerische Lokomotiv Pumpe mit im Kreise angeordneten parallelen Kolben und mit variabler Foerdermenge, die durch OEffnungen in den Zylinderwaenden mittels der Kolben gesteuert wird
DE921554C (de) * 1951-09-30 1954-12-20 Wilhelm Bussmann K G Hydraulische Hochdruckpumpe
US3133503A (en) * 1962-05-25 1964-05-19 Bendix Corp Hydraulic pressure transformer
US4286927A (en) * 1978-08-14 1981-09-01 Mcdonnell Douglas Corporation Hydraulic power transfer unit
US4363211A (en) * 1980-02-01 1982-12-14 The Boeing Company Quasi-open loop hydraulic ram incremental actuator with power conserving properties
WO1985001336A1 (fr) * 1983-09-12 1985-03-28 Beckman Instruments, Inc. Couplage de piston flottant pour pompes de type a plongeur
EP0149219A2 (fr) * 1983-12-28 1985-07-24 Speck-Kolbenpumpen-Fabrik Pompe à piston
EP0214749A2 (fr) * 1985-08-09 1987-03-18 Jse Corporation Injecteur d'eau à très haute pression

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1081953C (zh) * 1998-12-18 2002-04-03 中国科学院沈阳自动化研究所 一种海水冲洗装置
CN105179026A (zh) * 2015-10-10 2015-12-23 山东电力建设第一工程公司 汽轮发电机组润滑油系统的冲洗系统及冲洗方法
CN111255651A (zh) * 2020-03-02 2020-06-09 韩国昊 一种空压机

Also Published As

Publication number Publication date
EP0329208B1 (fr) 1995-07-12
EP0329208A3 (en) 1989-10-11
DE58909333D1 (de) 1995-08-17

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