FR2689421A1 - High pressure pump for pulverising paint for road marking - uses three cylinders with centre piston hydraulically driven to operate other two so they are alternately in compression. - Google Patents

High pressure pump for pulverising paint for road marking - uses three cylinders with centre piston hydraulically driven to operate other two so they are alternately in compression. Download PDF

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Publication number
FR2689421A1
FR2689421A1 FR9203965A FR9203965A FR2689421A1 FR 2689421 A1 FR2689421 A1 FR 2689421A1 FR 9203965 A FR9203965 A FR 9203965A FR 9203965 A FR9203965 A FR 9203965A FR 2689421 A1 FR2689421 A1 FR 2689421A1
Authority
FR
France
Prior art keywords
piston
paint
pistons
cylinders
high pressure
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.)
Withdrawn
Application number
FR9203965A
Other languages
French (fr)
Inventor
Le Bruno Roland Lucien
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.)
LEBRUNO ROLAND
Original Assignee
LEBRUNO ROLAND
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
Application filed by LEBRUNO ROLAND filed Critical LEBRUNO ROLAND
Priority to FR9203965A priority Critical patent/FR2689421A1/en
Publication of FR2689421A1 publication Critical patent/FR2689421A1/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F04B9/113—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 reciprocating movement of the pumping members being obtained by a double-acting liquid motor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
    • B05B9/0403—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material
    • B05B9/0409—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material the pumps being driven by a hydraulic or a pneumatic fluid

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Road Repair (AREA)

Abstract

The high pressure paint spray generator has three cylinders (2,8,17) and three pistons (3,11,18) fixed to a common rod (9). A solenoid valve (10) ensures alternate delivery of hydraulic fluid under pressure to inlet passages (7,13) at opposite ends of the centre of the three cylinders (8), driving the piston in alternating directions. Electromagnetic proximity detectors (4,15) at the inner end to the outer two cylinders control the operation of the solenoid valve, reversing the movement as the pistons approach the proximity detectors. The paint pressurised by the two outer pistons passes through inlet and outlet valves at the end of the cylinder. ADVANTAGE - Delivers smooth flow at paint spray.

Description

La présente invention concerne une pompe haute pression pour pulvérisation de peinture destinée aux machines de marquage routier. The present invention relates to a high pressure pump for spraying paint intended for road marking machines.

Dans l'état de la technique actuelle, une pompe haute pression pour pulvérisation de peinture destinée aux machines de marquage routier est constituée de deux éléments principaux qui sont, d'une part, un cylindre et son piston qui font office de moteur linéaire alternatif, alimenté soit en air comprimé, soit avec un fluide hydraulique sous pression, et d'autre part, une pompe aspirante-refoulante à simple ou double effet, adaptée en bout de la tige du vérin moteur, le piston de la pompe étant sollicité alternativement par l'aller et retour du piston moteur. In the current state of the art, a high pressure pump for spraying paint intended for road marking machines consists of two main elements which are, on the one hand, a cylinder and its piston which act as a reciprocating linear motor, supplied either with compressed air or with a pressurized hydraulic fluid, and on the other hand, a single-acting or double-acting suction-discharge pump, fitted at the end of the rod of the motor cylinder, the pump piston being acted on alternately by back and forth of the engine piston.

Dans ce système, la pression exercée sur le piston moteur n'est pas la même à l'aller comme au retour car la face de ce piston qui ne possède pas la tige de commande est nettement plus importante que la face sur laquelle est montée cette tige. Ce qui a pour effet de transmettre des irrégularités dans le jet de peinture, et le dosage à l'application n' est pas constant. In this system, the pressure exerted on the driving piston is not the same on the outward journey as on the return because the face of this piston which does not have the control rod is clearly greater than the face on which this rod. This has the effect of transmitting irregularities in the paint spray, and the dosage on application is not constant.

Le dispositif selon l'invention, outre que sa réalisation est plus simple, permet de remédier à cet inconvénient. En effet, le cylindre et son piston formant la partie moteur du système, est placé entre deux pompes aspirantes-refoulantes à simple effet. Les trois pistons se trouvant ainsi alignés sur le même axe et fixés sur la même tige, les deux faces du piston moteur central sont ainsi de surfaces équivalentes et reçoivent donc une même poussée. The device according to the invention, in addition to making it simpler, overcomes this drawback. Indeed, the cylinder and its piston forming the engine part of the system, is placed between two suction-discharge pumps with single effect. The three pistons being thus aligned on the same axis and fixed on the same rod, the two faces of the central engine piston are thus of equivalent surfaces and therefore receive the same thrust.

Le dessin annexé illustre l'invention. The accompanying drawing illustrates the invention.

En référence à ce dessin, le dispositif comporte le piston moteur central (ll) et son cylindre (8). Les deux pistons utilisés pour ltéjection de la peinture (3)et(18) ainsi que leur cylindre respectif (2)et(17). Ces trois pistons (11) (3)et(18) sont montés sur une même tige (9). Les culasses (l)et(19) supportent les clapets d'aspiration et de refoulement de la peinture.  With reference to this drawing, the device comprises the central driving piston (ll) and its cylinder (8). The two pistons used for ejecting the paint (3) and (18) as well as their respective cylinders (2) and (17). These three pistons (11) (3) and (18) are mounted on the same rod (9). The cylinder heads (l) and (19) support the paint suction and discharge valves.

Les pièces intermédiaires (6)et(14) servent de liaison entre les cylindres d'une part, et d'autre part à l'alimentation en fluide sous pression du moteur central. Des brides (12) permettent le serrage de lrensemble. Une électrovanne du commerce (10) alimente en huile sous pression d'une manière alternative le vérin moteur central par l'intermédiaire des conduits (7)et(13). La commande alternative de l'électrovanne (10) est assurée par les capteurs électromagnétiques (4)et(15) à chaque approche du piston peinture correspondant. Des orir fices (5)et(16) permettent la mise à l'air libre des cylindres peinture (2)et(17) à l'arrière des pistons.  The intermediate parts (6) and (14) serve as a connection between the cylinders on the one hand, and on the other hand for the supply of pressurized fluid to the central engine. Flanges (12) allow the tightening of the assembly. A commercial solenoid valve (10) alternately supplies pressurized oil to the central motor cylinder via the conduits (7) and (13). The alternating control of the solenoid valve (10) is ensured by the electromagnetic sensors (4) and (15) each time the corresponding paint piston is approached. Ports (5) and (16) allow the venting of the paint cylinders (2) and (17) to the rear of the pistons.

Claims (1)

REVENDICATIONS l)Dispositif pour pulvériser de la peinture sous haute pression caractérisé en ce qu'il comporte trois cylindres (2) (8)et (17) et trois pistons (3) (ll)et (18) alignés sur le même axe central. l) Device for spraying paint under high pressure characterized in that it comprises three cylinders (2) (8) and (17) and three pistons (3) (ll) and (18) aligned on the same central axis. 2)Dispositif selon la revendication 1 caractérisé en ce que le piston central (11) est le moteur et que les deux autres pistons (3) et (18) placés de part et d'autre du piston moteur sont chargés de véhiculer la peinture. 2) Device according to claim 1 characterized in that the central piston (11) is the engine and that the other two pistons (3) and (18) placed on either side of the engine piston are responsible for conveying the paint. 3)Dispositif selon la revendication 1 caractérisé en ce que la tige (9) traversant le piston (11) assure une surface active égale des deux faces de ce piston (11). 3) Device according to claim 1 characterized in that the rod (9) passing through the piston (11) provides an equal active surface of the two faces of this piston (11). 4)Dispositif selon la revendication 1 caractérisé en ce que les trois pistons (3) (ll)et (18) sont fixés sur une seule et même tige (9) 4) Device according to claim 1 characterized in that the three pistons (3) (ll) and (18) are fixed on a single rod (9) 5)Dispositif selon la revendication 3 caractérisé en ce que la tige (9) traversant le piston (11) porte à chacune de ses extrémités un piston (3) et (18) destiné à pousser la peinture dans les culasses (1) et (19). 5) Device according to claim 3 characterized in that the rod (9) passing through the piston (11) carries at each of its ends a piston (3) and (18) intended to push the paint into the cylinder heads (1) and ( 19). 6)Dispositif selon la revendication 3 caractérisé en ce que le piston moteur (11) est mis en mouvement par un fluide hydraulique sous pression dont l'écoulement s'effectue par les orifices (7) et (13). 6) Device according to claim 3 characterized in that the driving piston (11) is set in motion by a pressurized hydraulic fluid whose flow takes place through the orifices (7) and (13). 7)Dispositif selon la revendication 6 caractérisé en ce que l'inversion du sens d'écoulement du fluide hydraulique est assurée par une électrovanne (10) ce qui procure un fonctionnement alternatif du piston moteur (11). 7) Device according to claim 6 characterized in that the reversal of the direction of flow of the hydraulic fluid is ensured by a solenoid valve (10) which provides an alternative operation of the working piston (11). 8)Dispositif selon la revendication 6 caractérisé en ce que l'électrovanne (10) est commandée elle même par deux capteurs de proximité électromagnétiques (4) et (15) qui se trouvent excités à l'approche de l'un ou l'autre des pistons (3) ou (18).  8) Device according to claim 6 characterized in that the solenoid valve (10) is itself controlled by two electromagnetic proximity sensors (4) and (15) which are excited when approaching one or the other pistons (3) or (18).
FR9203965A 1992-04-01 1992-04-01 High pressure pump for pulverising paint for road marking - uses three cylinders with centre piston hydraulically driven to operate other two so they are alternately in compression. Withdrawn FR2689421A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9203965A FR2689421A1 (en) 1992-04-01 1992-04-01 High pressure pump for pulverising paint for road marking - uses three cylinders with centre piston hydraulically driven to operate other two so they are alternately in compression.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9203965A FR2689421A1 (en) 1992-04-01 1992-04-01 High pressure pump for pulverising paint for road marking - uses three cylinders with centre piston hydraulically driven to operate other two so they are alternately in compression.

Publications (1)

Publication Number Publication Date
FR2689421A1 true FR2689421A1 (en) 1993-10-08

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Application Number Title Priority Date Filing Date
FR9203965A Withdrawn FR2689421A1 (en) 1992-04-01 1992-04-01 High pressure pump for pulverising paint for road marking - uses three cylinders with centre piston hydraulically driven to operate other two so they are alternately in compression.

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Country Link
FR (1) FR2689421A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000077397A1 (en) * 1999-06-15 2000-12-21 Bernard Marinzet Piston pump, method and installation for filtering water
WO2008029223A1 (en) * 2006-09-05 2008-03-13 ITW Oberflächentechnik GmbH & Co. KG Control device of an air motor, in particular in combination with a pump and a spray coating installation
CN102937074A (en) * 2012-11-12 2013-02-20 三一重工股份有限公司 Continuous material feeding system and control method and elevating platform fire truck thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2096025A5 (en) * 1970-06-08 1972-02-11 King William
FR2300237A1 (en) * 1975-02-06 1976-09-03 Milroy Extracorporeal Inc DOUBLE ACTING DOSING PUMP
FR2359632A1 (en) * 1976-07-28 1978-02-24 Dso Stroitelna Technika Applicator and conveyor for polishing materials - has suction and compression chamber at end of distributing trough with agitators and driving cylinders

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2096025A5 (en) * 1970-06-08 1972-02-11 King William
FR2300237A1 (en) * 1975-02-06 1976-09-03 Milroy Extracorporeal Inc DOUBLE ACTING DOSING PUMP
FR2359632A1 (en) * 1976-07-28 1978-02-24 Dso Stroitelna Technika Applicator and conveyor for polishing materials - has suction and compression chamber at end of distributing trough with agitators and driving cylinders

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000077397A1 (en) * 1999-06-15 2000-12-21 Bernard Marinzet Piston pump, method and installation for filtering water
FR2795141A1 (en) * 1999-06-15 2000-12-22 Bernard Marinzet PISTON PUMP, METHOD AND INSTALLATION OF WATER FILTRATION
US6652741B1 (en) 1999-06-15 2003-11-25 Bernard Marinzet Piston pump, method and installation for filtering water
WO2008029223A1 (en) * 2006-09-05 2008-03-13 ITW Oberflächentechnik GmbH & Co. KG Control device of an air motor, in particular in combination with a pump and a spray coating installation
CN102937074A (en) * 2012-11-12 2013-02-20 三一重工股份有限公司 Continuous material feeding system and control method and elevating platform fire truck thereof
CN102937074B (en) * 2012-11-12 2015-06-10 三一汽车制造有限公司 Continuous material feeding system and control method and elevating platform fire truck thereof

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ST Notification of lapse
RN Application for restoration
IC Decision of the director general to declare irreceivable or to reject an appeal