GB2586127A

GB2586127A - Safety timed valve

Info

Publication number: GB2586127A
Application number: GB1911143.4A
Authority: GB
Inventors: Poggi Roberto
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-05
Filing date: 2019-08-05
Publication date: 2021-02-10
Also published as: GB201911143D0

Abstract

A safety timed valve comprising a valve body 1, a hydraulic cylinder 12, in which, are inserted the pistons 13,14 and a non-return valve 11, high power helical spring 10, push piston 9, n°2 push piston retainer system 8 and two pistons with helical spring 6,7, capable of interrupting the flow of a fluid, if there is no closure of the circuit in a predetermined time. At each interruption of the fluid flow in the circuit, such like a tap closure, the time-range for which the safety timed valve has been calibrated to close will be reset and whereby the calibration is adjusted via a screw 15 located at the top of the valve housing and capable of controlling the pressure within the upper cylinder and piston arrangement 12, 13, 14. The valve may comprise a small hole within piston 6 used to equalise pressure and return the valve to its open position.

Description

SAFETY TIMED VALVE

More and more, nowadays, we try to invest in the search of new solutions to guarantee both safety and respect for the environment. This invention wants to give a small contribution. It is designed to prevent leakage of fluids, in any pressure pipe system, cause of breakages or failures, guaranteeing, in this way, safety and respect for the environment.

Description

The object, of the present invention is a particular mechanical valve, preferably suitable for liquids, capable of interrupting the flow of a fluid, if, in a predetermined time, there is no closure of the circuit, therefore, attributable to failure or possible rupture of the pipeline, avoiding or limiting, in this way, damage caused by this event. At each interruption of the fluid flow, in the circuit, such like a tap closure, the time-range, for which, the "Safety timed valve" has been calibrated to close, will be reset.

The components of the invention will now be listed and illustrated, with reference to the attached drawings, showing an exemplified form of execution.

List of component parts 1) Valve body 2) Valve body cylinder gasket 3) Closing screw with gasket 4) Sealing ring 5) Tightening screw for sealing ring 6) Valve piston with helical spring (lower side) 7) Valve piston with helical spring (upper side) 8) n°2 Push piston retainer system 9) Push piston 10) High power Helical spring 11) Non-return valve 12) Hydraulic cylinder body 13) Lower hydraulic piston 14) Upper hydraulic piston 15) Threaded closure cap 16) Valve lid body 17) Retainer ring

ILLUSTRATIONS OF THE PARTS

1) "Body Valve (Board 2/8 Detail 1)": Of external form not relevant to its operation. On the top side there are two threads, the first one is "male" to allow the union with the "Valve lid body (Board 6/8 Detail 16) ", the second one is female to consent the union with the "Closing screw with gasket (Board 3/8 Detail 3)". In the internal side, as in its section clearly showed, there is a circle section entrance, which is inserted on the entrance of a vertical rectified cylinder, from which, through an opening on its side it flows towards the exit.

2) "Valve body cylinder gasket (Board 2/8 Detail 2)": Sealing gasket positioned on the basis of the vertical rectified cylinder.

3) "Closing screw with gasket (Board 3/8 Detail 3)": The bottom side is male threaded to permit the union with the "Body Valve", while, the top side is female threaded. The internal cylinder hole is used, as a guide way for the "Valve piston shaft (Board 4/8 Detail 6) .The internal cylinder hole has to have a right tolerance to permit a good shift. On the internal top side, there is a seat to hold the sealing ring.

4) "Sealing ring (Board 3/8 Detail 4)": Made of anti-friction materials. Useful against fluids infiltration 5) "Tightening screw for sealing ring (Board 3/8 Detail 5)": Male threaded to permit the union with "Closing screw (Board 3/8 Detail 3)". This Tightening screw is useful to keep "sealing ring" on its seat and give it the right pressure. The internal cylinder hole is used as guide for the "Valve piston shaft (Board 4/8 Detail 6).

6) "Valve piston with helical spring "(lower side Board 4/8 Detail 6)": Made with anti-friction materials and right tolerance. Consisting of a piston and a shaft joined together both rectified.A helical spring is inserted on the top side of the piston. A little hole through the piston is used to maintain balanced the pressure in static condition.

7) "Valve piston with helical spring "(upper side Board 4/8 Detail 7)": Of circular form, partially drilled in its own interior, in which, its spring and the shaft of the "Valve piston (Board 4/8 Detail 6)" will be housed. The top side, in working condition, will have the purpose to push on the "Lower hydraulic piston (Board 7/8 Detail 13)".

8) " n°2 Push piston retainer system ( Board 6/8 Detail 8)": Section realized as showed in Board 6/8 Detail 8,on the backside a small spring is present.Its 5 rotation fulcrum is on the top side to avoid pushing upward when closing.

9) "Push piston (Board 5/8 Detail 9) ": Of circular section, drilled in its interior. Two partially threaded pins (useful as a grip for its recovery) are insert on the bottom side; the upper lateral side will be in contact with the "high power helical spring (Board 5/8 Detail 10)". The cylindrical internal part will shift on the "Hydraulic cylinder body (Board 7/8 Detail 12)" external side.

10) "High power helical spring (Boar 5/8 Detail 10)".

11) "Non-return valve (Board 7/8 Detail 11)": (, in a generic mode, it has been schematized like a reed valve) It is inserted in the central part of the "Hydraulic cylinder body (Board 7/8 Detail 12)". It is consisting of a small reed with a gasket and a calibrate hole, it is blocked on one side. Its usefulness is to limit the hydraulic oil flow to one direction, while on reverse direction, it will be open, so, the hydraulic oil flow will be faster.

12) "Hydraulic cylinder body (Board 7/8 Detail 12)" : On the external top side there are two threads, a male one for union with the" Valve lid body ( Board 6/8 Detail 16)" and the second female one for union with the "Threaded closure cap ( Board 7/8 Detaill5). Two symmetrical cylinders separated by a perforated wall (where will be positioned the Non-return valve) are obtained in the internal side.

13) "Lower hydraulic piston (board 7/8 Detail 13)": Hydraulic piston with sealing ring.

14) "Upper hydraulic piston (board 7/8 Detail 14)" hydraulic piston with sealing ring.

15) "Threaded closure cap with spring (Board 7/8 Detail 15)": Threaded on the bottom side to union with "Hydraulic cylinder body (Board 7/8 Detail 12)". A little hole passing through the cap, balances internal and external pressure. Its spring 30 will ensure a small pressure on "Upper hydraulic piston".

16) "Valve lid body (Board 6/8 Detail 16)" : Internal and external of circle section, on the top side there is a threaded female hole to union with the "Hydraulic cylinder body (Board 7/8 Detail 12)" .On the bottom side there is a female thread to union the " Valve Body (Board 2/1 Detail 1). In the internal side are obtained two seats in which the "n°2 Push piston retainer system" are inserted.

Staggered by 90° there are two slotted holes guide, (Board 6/8 view from B) for the "grip pins of push piston".

17) "Retainer ring (Board 7/8 Detail 17)": As end limit of the "Lower hydraulic 5 piston (13)".

How the invention does it works We will now analyze the working principle of the "Safety timed valve" with the help of the 8/8 board reference.

Let us take as example, this valve upstream of a hydraulic system, kind a water 10 pipeline, in which, downstream, there is insert a tap.

The first condition: when the tap is closed, between entrance and exit of the "Safety timed valve" the pressure will be balanced, therefore, the Valve piston (6) will rest on the gasket (2) of the Valve body vertical cylinder (1).

The second condition: When we open and close the tap in a time-range, less for 15 which the "Safety time valve" has been calibrated.

The opening of the tap will cause a different pressure between entrance and exit on the "Safety time valve", this condition will cause the Valve piston (6) shift up on the Vertical rectified cylinder (1) until its lateral opening. Because of this, the water can flow freely. The shaft of the Valve piston (lower side 6) will shift upper inside the Valve piston (upper side 7) compressing its spring which will push it (7) upwards. At this time, being the Lower hydraulic piston (13) in contact with Valve piston (7) both inserted in the Hydraulic cylinder body (12), it will cause a movement of the hydraulic oil from lower cylinder to upper cylinder through the calibrate hole on the Non-return valve (11) which will stay closed. The oil entering the upper cylinder cause the shift up of the Upper hydraulic piston (14) which will push the Threaded closure cap spring (15).

When we will close the tap (in a time range less for which the "Safety time valve" has been calibrated) the Valve piston (6), helped by its spring, will return to the initial position (its small hole will balance the pressure).

The oil contained in the upper cylinder of the Hydraulic cylinder body (12) by the Hydraulic piston (14) (helped by the overlying spring), moves to the lower cylinder in a very short time through the Non-return valve (11) that will be open cause the pressure overlying. At the same time, the Lower hydraulic piston (13) will turn on its initial position.

The third condition: when we open and close the tap in a longer range of time for which the "Safety time valve" has been calibrated.

The initial condition is the same as the previous one and then changes when the 5 intervention goes over the set-time.

Now if the tap stays open over the set-time for which the "Safety time valve" has been calibrated, the hydraulic pistons (13, 14) and the Valve piston (7) will continue to shift upper. The Valve piston (7) will close the n°2 Push piston retainer system (8) ,cause of this, the Push piston ( 9), no more hold by these (8), will push with strength (caused by the high boost of the "High power Helical spring (10)") on the Valve pistons ( 7) and (6) , returning them to their initial position,closing the circuit. The small hole on the Valve piston (6) balance the pressure.

Like on the second condition we illustrate of, the oil inside the upper cylinder of the Hydraulic cylinder body (12) by the Hydraulic piston (14) (helped by the overlying spring) , turn in the lower cylinder through the Non-return valve (11), which will be open cause the pressure overlying, in a very short time. At the same time, the Lower hydraulic piston (13) comes back on its initial position.

To return to working condition of the "Safety timed valve" we will lift the Push piston (9), by its pins (useful as a grips), on the initial position, the n°2 Push piston retainer system (8) will hold it again.

If, for any questions, we want to lock the "Safety timed valve" in working condition every time, it will be sufficient to move, the Push piston (9) pins upper 35 horizontal part into the hollow.

There is the chance to modify the intervention time too, just slightly screw or unscrew the Hydraulic cylinder body (12) on Valve lid body (16).

The invention described above has been realized in a preferred realization form, 5 some of executing details may change without leaving the original field of the invention and therefore from the domicile of the invention.

Claims

Claims 1) Safety timed valve comprising: Valve body (1), Valve body cylinder gasket (2), Closing screw with gasket (3), Sealing ring (4), Tightening screw for sealing ring (5), Valve piston with helical spring (lower side 6), Valve piston with helical spring (upper side 7), n°2 Push piston retainer system (8), Push piston (9), High power Helical spring (10), Non-return valve (11), Hydraulic cylinder body (12), Lower hydraulic piston (13), Upper hydraulic piston (14), Threaded closure cap (15), Valve lid body (16), Retainer ring (17).(See boards 1/8, 7/8).
2) Safety timed valve according to claim 1 "Valve body (1)" wherein In the internal side, there is a circle section entrance, which is inserted on the entrance of a vertical rectified cylinder, from which, through an opening on its side, it enterin the conduit of exit.
3) Safety timed valve according to claim2 wherein, on the top side there are two threads, one male and one female to consent the union with the further component parts of the valve.
4) Safety timed valve according to claim 1 "Valve piston with helical spring (lower side 6) wherein the piston and its shaft are both rectified and made by anti-friction materials with right O tolerance.
C\I 5)Safety timed valve according to claim 4 wherein, on the base of the piston there is a small *17 through hole useful to compensating the pressures at a static level.
O 25 6) Safety timed valve according to claim 1 "Sealing ring (4)" made of anti-friction materials.
C\I 7)Safety timed valve according to claim 1 "Push piston (9)" wherein, it's of circular section, drilled in its interior and to have two female threaded holes on the bottom side circumference into which its two partially male threaded pins are inserted, useful as a grip for its recovery.
8) Safety timed valve according to claim 1 "Hydraulic cylinder body (12)" wherein, the its internal side is formed by two cylinders, where on the top side in one of these there are two threads, one internal female other external male; the internal cylinders are separated between them by one perforated wall.
9) Safety timed valve according to claim8, wherein, the hole on the wall dividing the two internal cylinders isused as a housing for the "non-return valve (11)".
10) Safety timed valve according to claim 1Non-return valve (11), wherein, in additional to the one-way closure system, is present a very small calibrate hole always open.