NO139778B

NO139778B - METAL COVER OF A CONTAINER IF CONTENT IS OVERPRINTED

Info

Publication number: NO139778B
Application number: NO1142/73A
Authority: NO
Inventors: Jean Cospen; Jean Schiavi
Original assignee: Cebal
Priority date: 1972-12-21
Filing date: 1973-03-21
Publication date: 1979-01-29
Also published as: DE2323718A1; BE799294A; SU520901A3; ES217483U; ES217483Y; LU66736A1; AT326553B; FR2211379A1; DD105789A5; NL7305288A; AU5370773A; GB1399849A; NO139778C; DE2323718B2; IT981655B; ATA260373A; DK139218C; OA04355A; FR2211379B1; JPS4996887A

Description

Tannhjulspumpe med ventilanordning. Gear pump with valve device.

Foreliggende oppfinnelse vedrører en tannhjulspumpe med en ventilanordning som er anordnet til å holde trykket på den væske som tannhj ulspumpen avgir til et forbrukssted konstant, og hvilken ventilanordning består dels av en hovedventil som er innskutt i en ledning fra pumpens trykkside til forbruksstedet, og dels av en trykkreguleringsventil som er innskutt i en forbiledning som går fra pumpens trykkside tilbake til pumpens sugeside, idet ventilene er dannet av hvert sitt faste ventilsete i et felles ventilhus, og av en felles membran som er innesluttet i ventilhuset og samvirker med begge ventilsetene, og som presses mot ventilsetene av en fjæranordning for å holde ventilene lukket, men som kan føres bort fra ventilsetene mot fjæranordningens innvirkning av det væsketrykk som hersker i pumpehuset, for å åpne ventilene, når det nevnte væsketrykk når en forutbestemt verdi. Det som vesentlig kjennetegner oppfinnelsen er at tilløpsledningen til tannhj ulspumpens sugeside, avløpsledningen fra pumpens trykkside med ventilanordningens ventilseter og forbiledningen til pumpens sugeside er anordnet i et legeme med et par planparallelle sider, av hvilke den ene siden samvirker med tannhj ulspumpen og den andre med ventilanordningen som er forsynt med membran og fjæranordningen. Ved oppfinnelsen er det blitt særlig enkelt å montere og demontere tannhj ulspumpen med ventilanordningen og dette uavhengig av rotasjonsretningen for tannhj ulspumpens drivanordning. The present invention relates to a gear pump with a valve device which is designed to keep the pressure on the liquid that the gear pump delivers to a point of consumption constant, and which valve device consists partly of a main valve inserted into a line from the pressure side of the pump to the point of consumption, and partly of a pressure control valve that is inserted into a bypass that runs from the pump's pressure side back to the pump's suction side, the valves each being formed by a fixed valve seat in a common valve housing, and by a common membrane that is enclosed in the valve housing and cooperates with both valve seats, and which is pressed against the valve seats by a spring device to keep the valves closed, but which can be moved away from the valve seats against the action of the spring device by the fluid pressure prevailing in the pump housing, to open the valves, when said fluid pressure reaches a predetermined value. The essential characteristic of the invention is that the supply line to the gear pump's suction side, the discharge line from the pump's pressure side with the valve seats of the valve device and the bypass line to the pump's suction side are arranged in a body with a pair of plane-parallel sides, one side of which interacts with the gear pump and the other with the valve device which is provided with a membrane and the spring device. With the invention, it has become particularly easy to assemble and disassemble the gear pump with the valve device and this regardless of the direction of rotation of the gear pump's drive device.

Oppfinnelsen er nærmere beskrevet i The invention is described in more detail in

ning til den medfølgende tegning, hvori det som eksempel er vist en foretrukket utførelse for tannhj ulspumpen med ventilanordningen, og hvor: Fig. 1 viser et lengdesnitt gjennom ning to the accompanying drawing, in which, as an example, a preferred design for the gear pump with the valve device is shown, and where: Fig. 1 shows a longitudinal section through

hele anordningen. the entire device.

Fig. 2 viser et enderiss av selve tannhj ulspumpen. Fig. 3 viser et lengdesnitt av det planparallelle legeme. Fig. 4 og 5 viser det nevnte legeme fra Fig. 2 shows an end view of the gear pump itself. Fig. 3 shows a longitudinal section of the plane-parallel body. Fig. 4 and 5 show the said body from

sidene. the pages.

Fig. 6 og 7 viser tverrsnitt gjennom Fig. 6 and 7 show cross sections through

legemet, vinkelrett på dette. the body, perpendicular to it.

Selve tannhj ulspumpen er betegnet med 1, og 2 betegner ventilanordningen som er anordnet til å holde trykket på den væske som avgis fra tannhj ulspumpen 1 til et forbrukssted konstant. The gear pump itself is denoted by 1, and 2 denotes the valve device which is arranged to keep the pressure on the liquid which is discharged from the gear pump 1 to a point of consumption constant.

Ventilanordningen 2 består dels av en hovedventil som er innsatt i ledningen 3, 4 fra pumpens 1 trykkside til forbruksstedet som fortrinnsvis dannes av et spre-dermunnstykke for olje i en oljebrenner, og dels av en trykkreguleringsventil som er satt inn i en forbiledning 5 fra pumpens 1 trykkside tilbake til pumpens 1 sugeside. The valve device 2 consists partly of a main valve which is inserted in the line 3, 4 from the pressure side of the pump 1 to the point of consumption, which is preferably formed by a spreader nozzle for oil in an oil burner, and partly of a pressure regulation valve which is inserted into a by-pass line 5 from the pump's 1 pressure side back to the pump's 1 suction side.

Som det fremgår av tegningen omfatter ventilanordningen 2 et ventilhus 6 som ledningen 3 er forbundet med. I ventilhuset 6 er det anordnet en ringformet flens 7 som danner et fast ventilsete for hovedventilen. Konsentrisk innenfor flensen 7 er det anordnet en annen ringformet flens 8 som danner et fast ventilsete for trykk-reguleringsventilen. Gjennom ledningen 4 står mellomrommet mellom ventilsetene As can be seen from the drawing, the valve device 2 comprises a valve housing 6 to which the line 3 is connected. An annular flange 7 is arranged in the valve housing 6, which forms a fixed valve seat for the main valve. Concentrically within the flange 7, another ring-shaped flange 8 is arranged which forms a fixed valve seat for the pressure regulation valve. Through line 4 is the space between the valve seats

7 og 8 i forbindelse med forbruksstedet, 7 and 8 in connection with the place of consumption,

mens rommet innenfor ventilsetet 8 ved hjelp av forbiledningen 5 står i forbindelse med pumpens 1 sugeside. while the space inside the valve seat 8 is connected to the suction side of the pump 1 by means of the bypass line 5.

I ventilhuset 6 er anordnet en bøyelig membran 9 av for eksempel gummi, som er felles for hovedventilen og trykkregu-leringsventilen ved at den virker sammen med de to ventilsetene 7 og 8. Membranen er anordnet til å presses an mot ventil- In the valve housing 6, a flexible membrane 9 of, for example, rubber is arranged, which is common to the main valve and the pressure regulating valve in that it works together with the two valve seats 7 and 8. The membrane is arranged to be pressed against the valve

setene 7 og 8 av en fjæranordning 10 for å holde ventilene lukket. Membranen 9 the seats 7 and 8 of a spring device 10 to keep the valves closed. The membrane 9

kan imidlertid føres bort fra ventilsetene 7 og 8 mot fjæranordningens 10 innvirk- can, however, be moved away from the valve seats 7 and 8 against the action of the spring device 10

ning av det væsketrykk som hersker i huset 6 for å åpne ventilene når det nevnte væsketrykk når en forutbestemt verdi som kan innstilles ved fjæranordningen 10. Ventilanordningen er nærmere bestemt av ning of the liquid pressure that prevails in the housing 6 to open the valves when said liquid pressure reaches a predetermined value which can be set by the spring device 10. The valve device is more precisely determined by

den utførelse som fremgår a\v amerikansk patent nr. 2.654.323. the embodiment shown in US patent no. 2,654,323.

I henhold til oppfinnelsen er tilløps-ledningen 11 til tannhj ulspumpens 1 suge- According to the invention, the supply line 11 to the gear pump's 1 suction

side, avløpsledningen 3, 4 fra pumpens 1 trykkside med ventilanordningens 2 ven- side, the drain line 3, 4 from the pump's 1 pressure side with the valve device's 2

tilseter 7 og 8 og forbiledningen 5 til pum- adds 7 and 8 and the by-pass 5 to pum-

pens 1 sugeside anordnet i et legeme 12 pen 1 suction side arranged in a body 12

med et par planparallelle sider 13 og 14, with a pair of plane-parallel sides 13 and 14,

av hvilke sider den ene 13 samvirker med tannhj ulspumpen 1 og den andre med ventilanordningen 2 som er forsynt med mem- of which sides, one 13 cooperates with the gear pump 1 and the other with the valve device 2 which is provided with mem-

branen 9 og fjæranordningen 10. the brane 9 and the spring device 10.

Ifølge en utførelsesform for oppfin- According to an embodiment of the invention

nelsen er avløpsledningen 3 fra pumpens 1 trykkside foran ventilsetene 7 og 8 i iege- connection is the drain line 3 from the pressure side of the pump 1 in front of the valve seats 7 and 8 in the

met 12 forsynt med en overløpsledning 15 met 12 provided with an overflow line 15

til forbiledningen 5 til pumpens 1 suge- to the bypass line 5 to the pump's 1 suction

side. Felles med overløpsledningen 15 vir- page. Shared with the overflow line 15 vir-

ker en i legemet 12 innskrudd regulerings- ker a in the body 12 screwed regulation

skrue 16 eller liknende. Legemet 12 kan dessuten være forsynt med en tilkoblings- screw 16 or similar. The body 12 can also be provided with a connection

ledning 17 for manometer. wire 17 for manometer.

Bortsett fra et sirkulært spor 18 for en tetningsring 19, for eksempel en O-ring, er den felles side 13 for legemet 12 og tannhj ulspumpen 1 helt plan, slik at den dan- Apart from a circular groove 18 for a sealing ring 19, for example an O-ring, the common side 13 of the body 12 and the gear pump 1 is completely flat, so that it

ner en av sidene i tannhj ulspumpens 1 ner one of the sides in gear pump 1

hus. Den felles side 14 for legemet 12 med membranen 9 og fjæranordningen 10 er forsynt med utsparinger som inngår i ventilanordningens 2 hus 6, slik at ventilanordningens 2 seter 7 og 8 som er utfor- House. The common side 14 of the body 12 with the membrane 9 and the spring device 10 is provided with recesses which are included in the housing 6 of the valve device 2, so that the seats 7 and 8 of the valve device 2, which are

met i legemet 12 ligger i sidens 14 plan. met in the body 12 lies in the plane of the side 14.

Ifølge en foretrukket utførelse av opp- According to a preferred embodiment of the

finnelsen er legemet 12 samt tannhj ulspumpens 1 og ventilanordningens 2 deler 20 og 21 som vender mot legemet 12, kva- the invention is the body 12 as well as the parts 20 and 21 of the gear pump 1 and the valve device 2 which face the body 12, qua-

dratiske og like store, idet de i hvert hjørne er forsynt med hull 22 for skruer 23 eller liknende, for. å holde disse sammen. Ved at de kvadratiske partier bestemmer hele Dratic and of the same size, as they are provided in each corner with holes 22 for screws 23 or similar, for. to keep these together. In that the square parts determine the whole

anordningens ytterkontur kan denne mon- the outer contour of the device, this mon-

teres i meget trange rom og slik at den kan bringes til å innta fire forskjellige stillinger hvilket tilsvarer at den dreies en kvart omdreining. in very tight spaces and so that it can be brought to four different positions, which corresponds to turning it a quarter of a turn.

Ifølge en utførelsesform er hullene 22 According to one embodiment, the holes are 22

så store at skruene 23 kan være gjennom- so large that the screws 23 can be through

gående og skal da samvirke med muttere. walking and must then cooperate with nuts.

Ifølge en annen utførelse er hullene 22 i According to another embodiment, the holes are 22 in

legemet 12 gjenget, slik at delene 20 og 21 the body 12 threaded, so that the parts 20 and 21

settes sammen med legemet 12 med hvert sitt sett skruer. På den viste, foretrukne utførelse er hullene 22 i en av delene 20 be assembled with the body 12 with each set of screws. In the preferred embodiment shown, the holes 22 are in one of the parts 20

og 21 gjenget, slik at det er tilstrekkelig med ett sett skruer uten muttere. Det er således delens 20 hull 22 som er gjenget. and 21 threaded, so that one set of screws without nuts is sufficient. It is thus the hole 22 of the part 20 that is threaded.

Claims

1. Gear pump (1) with a valve device which is arranged to maintain the pressure on the liquid which the gear

the pump emits to a point of consumption constantly, and which valve device (2) consists partly of a main valve which is inserted into a line (3, 4) from the pressure side of the pump (1) to the point of consumption, and partly of a pressure regulating valve which is inserted into a by-pass line ( 5) which goes from the pressure side of the pump (1) back to the suction side of the pump (1), the valves each being formed by a fixed valve seat (7, 8) in a common valve housing (6) and by a common membrane (9) which is enclosed in the valve housing and interacts with both valve seats, and which is pressed against the valve seats by a spring device (10) to keep the valves closed, but which can be moved away from the valve seats (7, 8) against the influence of the spring device (10) by the liquid pressure prevailing in the pump housing (6) to open the valves, when said liquid pressure reaches a predetermined value, characterized in that the supply line (11) to the gear pump's (1) suction side, the drain line (3, 4) from the pump's pressure side with the valve device's (2) valve seats ( 7, 8) and the preposition ( 5) until the suction side of the pump (1) is arranged in a body (12) with a pair of plane-parallel sides (13, 14) of which one side (13) cooperates with the gear pump (1) and the other (14) with the valve device ( 2) which is provided with the diaphragm (9) and the spring device (10).

2. Gear pump in accordance with claim 1, characterized in that in the body (12) the drain line (3, 4) from the pressure side of the pump (1) in front of the valve seats (7, 8) is provided with an overflow line (15) to the bypass line (5) to the suction side of the pump (1), and that this overflow line cooperates with a regulation screw (1G) screwed into the body (12).

3. Gear pump with valve device in accordance with claim 1 or 2, characterized in that the body (12) is provided with a connection line (17) for a manometer.

4. Gear pump with valve device in accordance with claims 1 to 3, characterized in that the side (13) of the body (12) which interacts with the gear pump (1) is flat so that it forms one of the sides in the gear pump (1) housing, while the side (14) of the body (12) which cooperates with the membrane (9) and the spring device (19) is provided with recesses which are included in the valve device's housing (6), so that the valve device's (2) seats which are formed in the body (12) lie in the plane of the side (14).

5. Gear pump with valve device in accordance with claims 1 to 4, characterized in that the body (12) as well as the parts of the gear pump (1) and the valve device that face the body are square and of equal size, and that they are provided with holes in each corner (22) for screws (23) or similar to hold them together.