DE1816878A1 - Alarm valve for sprinkler systems - Google Patents

Description

MOLL, ER-ISO Hurry up. DIPL ..- IN ©. © RALFS DK. MAW8TZ DHo DEfJi ¹ BL

, d © n 2Jo Dqso 1968

Matthew Hall Mechanical Services Limitsd Matthew Hall House ₈ 101-108 "Tott © aharn Court; Eoadc, 3 & οηάοη ₃ W ° 1o / England

Priority s Great Britain

21 ο Qlstober 1968

Alarm valve ims · S

The invention relates to alarm valves for sprinkler systems ^ which are known as mutually applicable systems ₀

Mutually applicable systems w © rd®n used ₉ irenn consisting ₈ that the water in the Spriiiklerrohren in winter sin celebrated, "during which time the system © possible nt = emptied and filled with compressed air IIDR & _o In such systems, it is üblich5 si ^ ei alarm valves are preceded ₈ which are arranged one above the otherg and were a "dry alarm valve" above an "itfaßalarmventils" so that each of the two can be used ₉ depending on whether the system is to be used dry or wet «

Di © won using SwaI alarm valves has d © n Hachteil ₈ that here =

• by the costs - increased for the symphony and still the fms?

38 DQAUfJOSEiWBlG, na οϋηβαπΡΑπκ ο ζ? coosti sooo? ο HÖcjetiEM 2ß. πΓ.ππίΤ -'-'- οκί-οτπ. s ¹ U? -sow no one Fora 20/51003 6. 63 "'ύ'; ι '-;, / ΐ; -:' · ^^^ W - '* -

G.8; i jal lib au required space is increased. goal of The invention is, inter alia, to avoid this disadvantage.

According to the invention, a valve device for controlling the supply of medium to a sprinkler system, which can be optionally set for operation with "dry" or "wet" lines, has a valve body which has a valve opening and an alarm opening , a hinged l'eiitilklappe in the valve body, which can close the opening and the alarm opening, a lever system that interacts with the valve flap $ as well as a control device that works together with the lever system and a control device on, which interacts with the lever system and can be operated in such a way that it ^{engages the valve flap in a working position in which it engages the valve flap in the "dry 1st} " state, and in an inoperative position holds, in which it releases the valve flap when the system is "wet", the valve opening uiid the alarm opening being provided with seats that cooperate with the valve flap, which con are centered to each other 'and are arranged in the same © essentially the same plane.

The invention is shown, for example, in the accompanying drawing and is explained in detail below «

Fig. 1 shows a cross section through an alarm valve according to the invention.

Fig. 2 is a side view. -

£ - *.%. "5 is a section along line 3-3 of FIG. 1.

009827/0995

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In the drawing, the alarm valve has a cast iron body 1 on top of a flanged inlet 2 for connection to a water supply line and one with. Flanged outlet 3 has a connection to the sprinkler system, the body 1 is further provided with an access opening 4- ₉ which is normally closed by a cover plate 5 ₉ which is attached to the valve body by means of visual screws 6.

The valve comprises a Ventilklapp® 7, which is provided on its underside with a circular sealing member 8 and is hinged on a spindle 9 in d @ s Vsntilkörpers 1 _a which is rotatable in bearings 10, 11 '

The sealing member 8 of the flap 7 is arranged · that it can stoüen against an annular seat 12 provided in the valve opening 13 ο The seat 12 is a obliquely © b © a running ₉ pointed ending edge provided at the sealing member 8 sur system comes into contact and causes a line discharge. The advantage of this arrangement is that only a minimal contact surface is required for the seal, and that therefore a maximum surface remains on which the water pressure can act ",

Sealing member 8 _9, which is held on the underside of the flap 7 by means of a retaining ring 16 and fastening screws 17, is also arranged so that it can come into sealing engagement with the open end of a seat 18 for an alarm opening Figo 1 shows the annular sealing edges of the seat 12 and the seat 18 in the same or substantially in the same horizontal plane.

7/0995

BATH ORIGINAL

About seat 18 for the Alarmöffziung is designed such that it consists of one piece with the annular seat 12, and is concentrically attached to this by means of radially lying spokes. One end of a curved coupling piece 20 is screwed into the part 18, while the other end with one end of a straight copper pipe 21 connected by means of a pressure connection 22 is. The other end of the pipe section 21 is in the valve body 1 by means of an attachment 23 and an O-ring, which is Pressure is maintained, sealed.

The underside of the flap 7 is provided in the vicinity of the part 18 with a circular recess 25, while the sealing member 8 is a circle of several spaced apart holes 26- _? where the circle has a larger diameter than the sit ^ 16 and a smaller diameter:!? than the inner circumference of the retaining ring 16 has “The holes 26 establish a connection between the inlet 2 and the recess 25. Because of this design, the pressure on the inlet side of the valve is also effective in the recess 25 * in the area of the alarm opening 18.

If the valve is used in the "wet" state during operation! allows the recess 25 _s that the sealing member 8 in the region of the opening of the part 18 in a direction normal to the surface of the flap "bends This causes _f when the sealing member even when each instantaneous increase in the pressure on the supply side of the valve 8 somewhat is lifted from the seat so that water can seep through the valve, this rise does not lift the sealing member from the alarm opening 8, so that the alarm is not triggered unnecessarily. The reason is that the pressure difference on opposite sides of the sealing

009827/0995

BATH ORIGINAL

Bichtgli © ci θ in densely © © vein district, c holds the part 8 j In -the Ätiaosphärandruek liorrsciit ₉ wherein the Biohtglied 8 "so flexible that lat _s © in® leieht® Eela.-cwbex-yeguiig zwisohsr" d. © r flap 7 and part 18 can take place "without the biology being interrupted".

"La the closed position x ^ ith the flap 7 in engagement with the seat 12 and the Sits 18 dsr Alarsöffnung held by a lever 27 _s pivotally seated on a spindle 28., Which diaaotral in Mow d © r opening 13 with respect to the - Spindle 9 ang-3 · = is arranged is «The lever 2? The s © in © rs @ its is held in a horizontal position by a second lever 29, the sohwenkfear on the spindle 9 g @ lag @ rt isto D @ r zxieite Ηθο @ 1 29 is voa an egg alarm JO uat @n held _{5 which} is stored on a well © 31 g © ~ it is held through in lagergeiiäias® hindurohfasst- ₉ the ia de wall of the valve body 1 is arrangedo The well © 31 is coupled with a known device, which contains a triggering device and. in Gana @ a 32 geaeieha @ t isto vil Thus, the crank arm 50 such that it actuates ₅ hältj the flap in an open or closed position! further is here = by the operation of valve controlled DE® _o

The Yentilkörper 1 is also the opening of which 33 is used for checking the Äiarmsystems at "nastsea" state with openings 33 and 3 ^ vers @ Hen- _B, while the opening 5 ^ ^ to check the alarm "system to" dry · " State is used. ,,

In operation, the valve is located between the water supply line and the sprinkler system and can be used both when it is dry and when it is dry take effect when the sprinkler system is wet

BAD ORlGfNAt

When dry state, the flap 7 decreases ^di e in Fig. ' 1 position shown, ~ in which the sealing member 8 rests against the seat 12 and the alarm opening 18 so that the valve opening and the alarm opening are closed. The levers 27 and. 29 are in the horizontal position in which they hold the flap 7 in the closed position, the crank arm 30 being in the horizontal position in which it engages the free end of the lever 29 under the influence of the control device 32.

In this position the valve for the EaIl is ready for operation, in which the sprinkler system is filled with compressed air and the inlet 2 is exposed to the water pressure. If the pressure of the air in the The sprinkler system is released - normally by actuating a sprinkler head - the crank arm 30 is activated via the control device * 32 rotated and releases the lever 29. The water pressure in the inlet 2 then causes the flap to pivot and the lever 27 "and 29 and moves them into the position shown in phantom in Fig. 1, with water in the sprinkler system can occur. At the same time, the water enters the alarm opening and activates the alarm system.

When the system is wet, the levers 2 / and 29 are held in the position shown in phantom in FIG. 1 by the crank arm 30, which rests against a projection 33 of the lever 27. The crank arm 30 is held in this working position by the action of the control device 32. In this case, due to its weight, the flap 7 remains in the closed position in which it seals off the alarm opening 18. . ,

If one of the sprinkler heads is now activated, the movement of the water through the valve causes the flap 7 to move into the position shown in FIG

009827/0 995

COPY - -; ^> :, BAD ORIGINAL * · *

'Position swiveled in dash-dotted lines, so that the Water can get into the alarm opening - 18 "and the alarm system goes off can solve ..

",.

In this way, the invention makes a simple and effective one Alarm valve created, which in the case of mutually applicable sprinkler systems "both when dry and when wet" stand can be used. Furthermore, the use of a single valve flap with a single sealing member for the Valve opening and the alarm opening for easier repairs and maintenance.

The valve according to the invention is largely improved over the known valve according to British patent specification 955,297 and shows the following advantages:

1. The sealing surfaces of the sealing ring 12 and the alarm opening 18 lie gen in the same plane and can therefore be used in one operation. processed together with great accuracy; -

2. Only one rubber sealing member 8 is required to seal both the main vent and the alarm opening.

3 »False alarm due to falling or rising pressure

in the main line when using the valve when wet ■ State essentially switched off, without damaging it - Influence on the normal operation of the valve;

The training of the alarm opening has become easier and better,

009827/0995

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Claims (5)

Claims Alarm valve device for controlling the supply of medium to a sprinkler system, which can optionally be used for "dry" ner "or" wet "line is adjustable, with a valve body, which has a valve port and an alarm port, with one hinged in the valve body. Valve flap, which can close the valve opening and the alarm opening, with a lever system that interacts with the valve flap, and with a control device which cooperates with the lever system and can be operated in such a way that it Lever system in a working position in which it engages the valve flap when the system is in a "dry" state, and can hold an ineffective position in which it releases the valve flap when the system is "wet", thereby characterized in that the valve opening (13) and the alarm opening (18) are provided with seats which are connected to the valve flap (7) cooperate, lie concentric to one another and are arranged in the same or essentially the same plane 2. Alarm valve according to claim 1, characterized in that the valve flap (7) has a single, circular sealing member (8), which can close both the valve opening (13) and the alarm opening (18). 3. Alarm valve according to claim 2, characterized in that the valve flap (7) at its in the vicinity of the alarm opening (18) provided surface with a circular recess (25) is, and that the sealing member (8) has one or more holes 009827/09 95 Has holes (26) communicating between the inlet side of the valve and the recess (25) in such a way that that during operation in the area of the alarm opening (18) there is a pressure difference on opposite sides of the sealing member (8) is present. 4 · Alarm valve according to one of claims i to 3i, characterized in that that the alarm opening device has an opening seat (18) and lines (20, 21) which connect between the seat and an opening in the valve body. 5. Alarm valve according to claim 4, characterized in that the seat (18) of the alarm opening is formed in one piece with the part (12) is that forms the seat of the valve opening. 6, alarm valve according to claim 4 or 5 »characterized in that that the lines to the alarm opening have a curved coupling piece (20), one end of which with the opening seat (18) is connected, and the other end of which receives a straight pipe section (21) which is connected to one in the valve body provided approach (23) is connected. 009827/0995 Blank page