DE1200053B - Valve for controlling the liquid delivery of sprinklers arranged on lines - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY Int. α .:

AOIg

GERMAN

PATENT OFFICE German class: 45 f - 25/00

EDITORIAL

Number:
File number:
Registration date:
Day of delivery:

1200 053
F 29589 HI / 45 f October 12, 1959 September 2, 1965

The invention relates to a valve for controlling the dispensing of liquid from arranged on lines Sprinklers, which are actuated by flow pressure and upstream of the sprinklers, these one after the other on and off.

There are already known irrigation systems that have a number of spaced apart with sprinkler-equipped valves along the lines to the irrigation devices are arranged, each valve providing the connection between each individual valve and the downstream lying valve separates and thereby the water flow to the associated irrigation device shut off.

It is also already known that the valves arranged outside a sprinkler system are housed have, the inlet and outlet openings have the with the upstream and downstream Sections of the line arranged at opposite ends of the associated valve housing are, with a main passage connecting both openings together and a branch connection of the main passage goes off and is in communication with it. In this system, every housing has its own sprinkler head, which is directly connected to the branch »5 connection. There is every one Valve arranged in a housing and can assume a position that of the outlet opening has a certain distance and lies within the main passage. Each valve can be inserted into the Closed position with the outlet opening to direct the water into the junction.

The known valves have a large number of disadvantages. They are very expensive and have relatively many moving parts. The maintenance costs for systems with such valves are generally very high, mainly due to clogging of the valves from in the spray water included fixed parts. After all, this has also resulted in high direct operating costs so far, that at each valve there is a high pressure drop, so that relatively very high pumping pressures required are.

The invention is based on the object of avoiding these disadvantages.

The essence of the valve according to the invention is in one of elastic wall parts, one a Existing plate having an opening and an expandable terminating part arranged above it Chamber seen that contains a liquid. There is also a resiliently deformable valve stem provided with the wall part and the valve valve for controlling the liquid discharge of sprinklers arranged on pipes

Applicant:

FMC Corporation, San Jose, Calif. (V. St. A.)

Representative:

Dr.-Ing. H. Ruschke, patent attorney, Berlin 33, Auguste-Viktoria-Str. 65

Named as inventor:

Robert Edwin Stilwell,

Richard William Fitzmaurice, Santa Clara, Calif. (V. St. A.)

Claimed priority:
V, St. v. America October 13, 1958 (766 912)

is connected such that when pressure is applied to the chamber, the liquid through the opening of the Plate passes and the expandable end part bulges forming a second chamber, which of the Cap is limited.

Preferably, the valve actuation member is an expandable or compressible rod that the Valve and the movable wall part connects to one another.

The elastically movable connection or wall parts can be in the form of rubber membranes exhibit.

In a preferred embodiment of the subject matter of the invention makes the valve rod and the valve a unitary one, made of the same material existing rubber block, and the valve is a ball valve, which is used to close the outlet openings.

The valve according to the invention has the advantage greatest simplicity with an unusually high degree of efficiency. It works by changing the Pressure of the water completely automatically, while the valves hardly influence the water flow, so that there is only a minimal pressure drop across them. In addition, the valves act on both sides, are therefore independent of the direction of flow.

These and other purposes and advantages of the invention will become apparent from the description that follows

509 659/139.

emerge, in which reference will be made to the drawing. In the drawings is

F i g. 1 shows a schematic diagram of part of the irrigation system with a follow-up system according to the present invention,

F i g. FIG. 2 is a perspective view, on an enlarged scale, of one of the valves used in FIG Irrigation system according to the invention can be used, parts of the pipeline being shown and the connection to the sprinkler head is drawn in the broken state,

3 shows a horizontal central section through the valve according to FIG. 2 in the rest position of the valve,

F i g. 4 one of the F i g. 3 similar view showing a first operating position of the valve,

Q: g. 5 is a vertical section along line 5-5 of FIG F i g. 4, which shows a second operating position of the valve.

The F i g. 6, 7 and 8 are views corresponding to FIG. 3, 4 and 5 respectively and a modified one Show embodiment of the valve according to the invention.

The Fi g. 9, 10 and 11 are illustrations showing the F i g. 3, 4 and 5 respectively and show a further embodiment of the valve according to the invention and

F i g. 12 is a partially horizontal section through a further embodiment of the valve according to the invention.

In Fig. 1 an irrigation system according to the following system is partially shown. The system consists of a main pipeline 10 and a number of spaced parallel lateral pipelines 11 a, II b, 11 c etc. In the course of each lateral pipeline there is a row of spaced sprinkler heads and valves. The supply of water to the entire system is regulated by an automatically operating time switch 13, which in the system according to FIG. 1 comprises a pump 14 of conventional design and a valve 18 which comes into operation automatically at certain time intervals. The valve 18 is also of the usual type and periodically brings about a temporary reduction in the water pressure inside the system. The valve 18 can be controlled, for example, by a clockwork and either completely interrupts the flow of water in the main line 10 or reduces the flow therein to such an extent that the pressure inside the system is reduced to the required level. Optionally, the valve can be a branch valve which diverts the flow of water from the pipeline 10. In another embodiment, the valve 18 can be omitted entirely and only an automatic timer and pump can be provided, which is switched off by the former during the periods during which a reduction in the pressure in the irrigation system is desired.

The position of the valves along the laterally arranged pipelines can be as shown in FIG. 1 is reproduced; however, the individual parts can also be in any other relative position to one another be arranged as required by the particular conditions of a particular installation.

On each part 12 there is a pipe socket 20 which rests upwards and carries a sprinkler head 22 at its upper end. The sprinkler heads 22 can be of any design, as they are just suitable for the particular purposes of use, and are therefore not to be described in more detail here. Since the parts 12 all have the same structure, only the valve 12, which is closest to the main pipeline 10 and is arranged in the course of the line 11 α , will be described in more detail.

ίο From the F i g. 2 and 3 it can be seen that the part 12 consists essentially of a hollow, T-shaped housing which has a cross-shaped part which consists of a supply line 24 and a discharge pipe 26 through which the connection in the lateral line 11 α is made possible. The pipe socket 20, which carries a sprinkler head 22, is connected to the short socket 28 of the housing. This socket contains a valve chamber 30 which is in communication with the supply lines and discharge lines 24 and 26 and has an outlet which is connected to a line 32 and at the upper end of which the pipe socket 20 can be screwed.
At the end opposite the lines 24 and 26, the chamber 30 is closed with the aid of a cap 33 which is screwed onto the threaded end portion 34 of the connecting piece 28. This screw cap 33 has an air passage 35 in the wall and is provided with a shoulder 36 which serves to place a solid circular plate 38, an expandable connecting part, in particular a membrane 40, 41, 42, between itself and the annular end face of the part 28. in contact with the outer surface of the plate, and to pinch an annular flange 43 which projects radially outwardly from a wall portion 44. The membrane consists of a suitable elastic, pliable material, such as. B. rubber, and is thickened in its central part 41 compared to the peripheral part 42.

The wall 44, which is also made of elastic, flexible material, has a cylindrical outer part 44 a, which fills a bore 30 α in the outer part of the nozzle 28, and a thinner inner wall part 44 b of smaller diameter, the inner end of the outer Part 44 a seals. The wall 44 and the plate 38 together form a chamber 45 which contains a non-compressible viscous liquid 45 a, for. B. based on silicone contains.

In the chamber 30 protrudes from the wall part 44 b ago a valve actuating part, for example in the form of a rod 46 made of flexible, elastic material, which is surrounded by a cylindrical sleeve 47 made of a solid, corrosion-resistant material such as nylon. The sleeve 47 may be slotted longitudinally along one side to facilitate its application to the rod 46. The outermost end 48 of the rod 46 is widened and projects into the chamber 45 for a short distance.

The more distant end 48 carries a number of bumps 49, the purpose of which will be explained later shall be.

At the inner end of the rod 46 is a ball valve 50, which is also made of rubber or some other flexible and resilient material. The wall 44, the rod 46 and ball valve 50 are preferably molded in a single piece.

5 6

The plate 38 is present with a narrow opening 52 and escapes through the bore 35. see that between its center and its This has the consequence that the rod 46 is stretched The circumference. As a result of the flexibility and and in F i g. 4 assumes the position shown in Resilience of the wall 44 and the rod 46 which has its end 48 in contact with the plate 38 the ball valve 50 can be inoperative between its 5. The ball valve 50, however, remains in its die seed position (FIG. 3), a first working position outlet opening 53 closing position, because yes (which is reproduced in FIG. 4), in which the water pressure inside the valve chamber is applied to the valve 50 is applied to the output 53 and this is maintained on the right.

After the sprinkler head 22 is located during an outlet line 26 and has been in operation for a second operating period, the division (FIG. 5), in which the outlet opening 54 is the Timer device 13 provides temporary pressure at the inner end of line 32 which leads to the waste in main line 10 and consequently sprinkler head is closed. As a result of the flexible in the lateral branch line 11 a. During this poor and resilient property of the material used for the ball pressure drop, which can last several seconds, valve 50 is wear and tear 15, the pressure on ball valve 50 decreases and the valve seat against which valve 50 rests when it is left under the action of the pressure exerted by the closing of the outlet 53, the pull exerted by the seat on a minimum elongated rod 46 is reduced. Also, the surface will stand out. The ball valve 50 is in this way the ball 50, when the ball valve is closed, brought into a position in which it is removed by the sleeve over the entire circumferential surface for sealing 20 47 from the rod end 48 and lies with the valve seat brought, even if the - then immediately below the line 32.
having ser interruptions or otherwise before ever any significant Flüssigunregelmäßig is designed so that any waste keitsmenge 45 a which presses against the diaphragm 40, use, which can be now occurred exclusively through the bore 52 of the chamber 45 in the; will be equal. 25 chamber 45 can seep back, the pressure of the

The symmetrical construction of the valve part 12 re-augmented water in the whole system.

its inclusion in the line 11 α in the water flow that flows through the part 12, lifts

Either of the two positions. One of these positions then moves the ball valve 50 to the position shown in FIG. 5 shown

is in Fig. 1 shown, in which the lines 24 and 26 position, in which the outlet opening 54, the to

on the inlet or outlet side of the valve 12, 30 leads to the line 32, is closed; on this goes

; en. In the other or reverse position, all of the water flow directly through the first

is not shown, the line 26 would pass through the part 12 and onto the next unit 12

inlaßseite of the valve are, while the line in the side branch line 11 a to through the

24 would be on the outlet side. On this sprinkler head 22 in the next unit 12 her-

It is impossible to install the valve 12 in this way.

that the flow is in the wrong direction Since the lines 24 and 26 immediately behind

flows through the valve. are arranged to each other, as is also from the

If the irrigation system is not in operation, ie, F i g. 3 and 4 can be clearly seen, the Wassoll no water flows through the pipe 11 to flow α, ser straight in the direction of flow and thus also the valve 50 is in its in F i g. 3 40 through the valve 12. The ball valve is in the rest position shown. Assuming that the pump 50 is in the position in which there is a flow through 14 in operation and the control device thus allows the outlet line 26, then the ball is set so that water at full pressure in the main valve 50 practically out of its position was fed between the pipe 10, then the water inlet and the outlet opening of the valve 12 are also removed at full pressure in all the lateral branches 45 so that the ball of the laminar flow lines 11a , 11b, 11c etc. is fed. But since there is practically no resistance to the flow of water, all the lateral pipelines oppose the same. For the rest, only minimal dimensions and also the same structure, pressure drop across the valve 12, takes place.
so in the following only a single branch line, namely the line 11 a, will be described in the case of subsequent temporary pressure drops. The 50 water in the whole system will be the ball water in the pipeline 11 α first in valves 50 in the successive valves 12 the part 12, which in turn brought into positions the main line 10 in the line 11 α, and although through the inlet connection 24 in Rieh- the in F i g. 5 correspond to the position shown. A direction of arrow D, and presses the corresponding pressure drop inside the line, the ball valve 50 in its first operating position (Fig. 4), 55 lasts only so long that it moves in such a way in which the passage 53, the to the starting position of the ball valve 50, which leads to the line 26, is closed. The line 32, sprinkler in connection, and which takes place in any adjoining nozzle 20 and which takes place at any point in time, of course, sprinkler head 22 are consequently under full effect on any ball valve, which line pressure, during the admission of water to 60 before has been brought into such a position, any of the following parts 12 in the since such a period of time is too short to prevent a borrowed pipe 11 α . At the same time a substantial amount of liquid 45 α that backflows the pressure of the water in the first nozzle men through the narrow opening 52 to enable.
12 the liquid 45 α from the chamber 45 through the Are all sprinkler heads 22 in each lateral bore 52 in the plate 38 and thus against the 65 borrowed branch line 11 a, 11 b, lic etc. actuated membrane 40, which is and has been and are inflated as a result all of the ball valves 50 have also bulged outwards away from the plate 38 and brought to positions that correspond to the one shown in FIG. 5 forms a second chamber 45 b . The positions shown in the cap correspond to the positions described above

the water supply should be fully opened. The liquid 45 α, which the diaphragm 40 of each valve 12 bulges, then slowly reverses through the corresponding opening 52 back into the associated chamber 45. It follows that the membrane 40, the partition 44, rod 46, and ball valve 50 are the same as those shown in FIG. 3 take the position shown again. The surveys 49 on the other surface of the rod end 48 prevent possible adhesion of this End part on the plate connected to it by suction.

Care must be taken that those parts of the valve 12 which enclose the liquid 45 α are hermetically sealed and that the liquid 45 α is consequently separated from the water whose flow is regulated by the valve, but also from the surrounding water Air. This avoids contamination of the liquid 45 α by solid particles, seaweed or seaweed, which can get into the interior when the liquid flows through the bore 52.

If all valve devices 12 have been returned to their original position, then that is System ready for a subsequent cycle of individual operations. The timer device 13 can be set up to automatically start the subsequent cycle at any point in time starts after all valve devices are ready again in the manner described have been brought.

In the embodiment there is an automatic device for timing the pressure drops shown in the system, it can of course just as well be a hand-operated control device for this purpose.

In the case of the FIGS. 6, 7 and 8, the structure of the part 112 is practically the same as that of the valve device 12, except for the small differences "which will now be described in more detail. A plate 138, which corresponds to the plate 38 of the first embodiment, has a centrally located recess 139. The flexible and resilient membrane 140 has a central central part 141 which has a U-shaped cross-section and protrudes with its lower end into the recess 139. The edge 142 of the membrane 140 is from the outer end of the part 141 ab is folded inward and conforms to the inner surface of the cap 133. The wall part 144 α has a slightly shorter length and the wall part 1446 has a greater length than the corresponding wall parts 44 α and 44 b . end 148 of the rod 146 does not project into the chamber 145 into it. the non-compressible fluid 145 α is located not only in the chamber 145, but AUC h in the space between the diaphragm 140 and the plate 138.

The operation of part 112 is generally the same as that of part 12. When the pressure of the water inside the irrigation device 112 increases to the normal irrigation pressure, the position and shape of the membrane 140 change from that in FIG. 6 in the arrangement shown in FIG. 7 represented arrangement in which the 6g middle part 141 to the outside, inverted, thereby forming a second chamber b 145th If the membrane returns to its original shape and position, then the inwardly outwardly turned middle part 141 tries to snap back into its normal shape and in this way emits a special spring effect when it approaches the plate 138, which causes the liquid to flow back supported in chamber 145.

In the embodiment of the subject matter of the invention shown in FIGS. 9, 10 and 11, the part 212 has the same structure as the part 12 in FIGS. 3 to 5 with the exception of a few differences that will be explained below. The cap 233 is deeper than the corresponding cap 33 of the part 12 and, calculated from its outer end, carries an inwardly projecting flange-like. Stub 255 which holds one end of a compression spring 256 which presses on the membrane 240 with its other end. A portion 258 of the diaphragm 240 is bent around itself and disposed between the spring 256 and the side wall of the cap 233. The. Is spring 256 serves to direct the pressure under which the liquid from the second chamber 245 in b., The first chamber is returned, against the pressure to increase, which would be exerted by the membrane 240 alone.

In the embodiment of FIG. 12, the part 312 has the same structure as the part 212 of FIGS. 9 to 11, with the exception of a few differences which will be mentioned below. Instead of the screw connection for holding the cap 333 in place, the end 334 of the part 328 of the housing also carries two outwardly projecting eyes 360 and 360 α which are arranged in opposite directions. Slots 362 and 362 a, which open in opposite directions. Similarly, the cap 333 is provided with two eyes 364 and 364 α, in which the slots 366 and 366 a are cut, which correspond to the eyes 360 and 360 a. Two bolts 368 and 368 a, which reach through the eyes 360, 364 or 360 α and 364 α , hold the cap 333 firmly on the rod-shaped part 328.

In the cap 333 no hole is provided for the air outlet. When operating valve 312 therefore the air in the. The inside of the cap 333 is compressed when the membrane 340 expands. The compressed air leads to an increase in pressure, in addition to that Pressure exerted by the spring 356 acts to prevent the liquid from flowing back into the chamber 345 Effect of the movement of the diaphragm 340.

It goes without saying that each of the embodiments of irrigation devices described here with valves according to the invention with fully closed cap and / or with one with a bolt or. Equipped with threaded cap can be, and there can also be a connection between the cap and the rod-shaped Part of the housing can be selected, as shown in FIG.

Claims (7)

Patent claims: 1. Valve for controlling the liquid delivery of sprinklers arranged on lines, which is actuated by flow pressure and, connected upstream of the sprinklers, switches them on and off one after the other, characterized by a plate (38) made of elastic wall parts (44, 4Sb), an opening (52) and a dar- existing over arranged expandable sealing member (40 to 42) containing a liquid chamber (45) and a resiliently deformable valve stem (46) of (b 44) with the wall part and the valve (50) is connected, such that when pressure is applied to the chamber (45) the liquid (45 a) passes through the opening (52) of the plate (38) and the expandable end part (40 to 42) bulges forming a second chamber (45 b) which is supported by the cap (33) - ίο is bordered. 2. Valve according to claim 1, characterized in that the valve actuating part (46) is an expandable or compressible rod which connects the valve (50) and the movable wall part (44 b) to one another. 3. Valve according to claim 1 or 2, characterized in that the elastically movable connection or wall parts (40, 41, 42, 44 b) are in the form of rubber membranes. 4. Valve according to claim 1, 2 or 3, characterized by a spring (256, 356) which the movable wall part (240, 340 ) presses against the plate (38). 5. Valve according to claim 2, characterized by a fixed spacer sleeve (47) which the Surrounds the valve rod (46). 6. Valve according to one of claims 2 to 5, characterized in that the valve rod (46) and the valve (50) a unitary rubber block made of the same material represents, and the valve (50) is a ball valve which serves to open the outlet (53) to close. 7. Valve according to claim 1, characterized in that the plate (138) has a centrally mounted recess (139) , while the membrane (140) assumes the shape of an inverted U with increasing liquid pressure and the U-shaped part itself one maintains a predetermined distance from the plate. Considered publications:
U.S. Patent Nos. 1745 536, 1790 924. For this purpose 2 sheets of drawings 509 659/139 8.65 © Bundesdruckerei Berlin