LU83196A1 - STOPCOCK - Google Patents

Description

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The present invention relates to a stopcock specially intended for distribution installations of fluids.

In these installations, whether for domestic or industrial use, there always comes a time when it becomes necessary to interrupt the flow of the distributed fluid to carry out repairs or to replace a damaged element.

These repairs make it necessary to interrupt the circulation of the fluid to prevent it from leaking out of the pipes and being lost or causing damage.

This has resulted in the need to mount in the pipe installations so-called shut-off or isolation valves, which interrupt the passage of the fluid and thus make it possible to work on the installation without it spread.

To date, however, it has not been possible to mount a tap on a pipe without having to close another tap placed upstream of the location chosen for the one we wish to mount.

The object of the invention is therefore to provide a tap making it possible to interrupt the flow of a fluid at any point of a pipe without it being necessary, for its mounting, to interrupt this flow upstream of this point.

To this end, the stop valve according to the invention consists essentially of a body made of two parts articulated one on the other and which enclose between them the fluid line with a perfect seal, and by a cutting and shutter member able to move in the direction of its axis inside this body.

The element which cuts the fluid line is manually actuated and completely closes the passage of the fluid inside of it thanks to the elastic obturator body which it comprises, and, when it is moved in the opposite direction. , it frees the passage for the fluid inside the pipe, so that it fulfills a double function: 2 ·. '"-. 1 first of all, it serves to cut the pipe while allowing the fluid to circulate without leakage, and secondly, it plays the role of a traditional shutter · The arrangement according to the invention provides a whole series of notable advantages, given that to mount this shut-off valve on a it is no longer necessary to interrupt the circulation of the fluid by closing another valve placed upstream, nor is it necessary to drain the line to prevent a residue of fluid from spreading, because this tap has sealing members which allow it to be mounted on the pipe to cut the latter then that the fluid circulates there.

All this allows, with a minimum of tenqss and work, and with a simple mechanism, to proceed to the mounting of a shut-off valve on a fluid line, said valve comprising, as has been explained more top, a cutting member for this pipe.

In any case, the invention will be clearly understood with the aid of the description which follows, with reference to the appended schematic drawing, representing, by way of nonlimiting example, an embodiment of this tap:

Fig. 1 is a side view, in section, of the assembly of a stop valve according to the invention;

Fig. 2 is a sectional view of the upper part 25 of the valve body, along A - B of FIG. 3 "

Fig. 3 is a bottom view of the upper part of the valve body;

Fig. 4 is a sectional view along C - D of fig · 2;

Fig. 5 is a sectional view of the lower part 30 of the valve body, along B - F of FIG. 6;

Fig. 6 is a plan view of the lower part of the valve body;

Fig. 7 is a sectional view along G - H of FIG. 5;

Fig. 8 is a side view and partially in neck · 35 pe of the cutting and shutter member, showing the shutter body;

Fig. 9 is a sectional view along X - J of FIG. 8.

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It can be seen in FIG. 1 that the body of the stopcock according to the invention is formed of two parts: an upper part JL and a lower part J2, which articulate one on the other and enclose between them the con-5 duite on which the tap is mounted ·

Pixr the joint between the two body parts there is an axis J3 and, to immobilize said parts one relative to the other, in the tube clamping position, there is provided a screw j9. These articulation and fixing means 10 being traditional, they can be replaced by equivalent means without modifying the scope of the invention ·

The two body parts jL, have, embedded in the faces by which they are assembled, two respective seals J7, which cooperate to prevent the fluid from leaking out of the valve. At the upper free end of the upper part of the body of the valve is screwed a guide support cover j>, crossed in its center by a tapped hole for the passage 2o of an operating rod j6, which is therefore threaded and can thus move axially relative to the cover.

The upper part jl of the body is hollow, as shown in FIGS. 2, 3 and a cutting and closing member 2.1 in which is inserted a shutter element Jl, 25 slides inside said part jl, the Jl element used to interrupt the circulation of the fluid in the pipe.

The axial displacement of the member 2. inside the upper part jt of the valve body is ensured by the operating rod ji, the lower end of which, in the shape of an enlarged head, fits into a housing provided at one upper end of the member 2.î by screwing or unscrewing the rod £, it will cause the descent or ila rise of the cutting and sealing member. To facilitate the rotation of the operating rod j>, its upper end is pierced with a hole jll, for the engagement of a manual actuation member, not shown. The operating system,. "- ,; η f, ϊ 4 uent which has just been described is traditional and one can therefore replace it with another without modifying the scope of the invention. ,

The lower part _2 of the valve body is also 5-hollow, as shown in Figures 5 »6 and 7, so that it can accommodate the cutter and shutter 2 * when it descends vertically to cut and or ! close the fluid line * j The seal between the upper part JL of the body i 10 'The valve and the cutting and closing member 2. * and as ”1 i have urea by a JlO joint. j

The stopcock according to the invention operates from I

In the following way; i i

We loosen the screw j), until the two par-.

15 ties and Jï of the body can pivot one relative to the other around the axis of articulation JB, so that the j pipe comes to lodge easily between them. | f

When the pipe is housed inside the valve body, tighten the screw j? .. until a perfect seal is obtained between the two parts of the body and the pipe, which facilitates the presence of J joints provided for this purpose.

Then, using the manual actuating member, the operating rod j6 is turned, which, being screwed into the tapped hole of the cover 5, then moves axially in the direction of the pipe, pushing j the cutting and closing member J3 * '

Once the latter is in contact with the pipe, if we continue to rotate the rod jS, its ex-30 sharp pointedness, visible in Figure J0, begins by perforating it, then, the organ 2. continuing its descent ends up cutting it entirely, while the shutter element 4 is inserted between the two sections of the cut pipe 4 * 1 and interrupts the flow of the fluid.

35 It will suffice, using the manual actuating member, to rotate the operating rod in the opposite direction to reassemble the cutting and closing member and V}! i ·: .μ · -, v'Vv’fp-vi ··> * wII · * 1’ff | * • t iVfl

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5 · -; i · :? thus reestablish the flow in the pipe. When we de- ·:! Ι, ί> *. - *, "t V / i if ο interrupt it again, we will proceed as during. I have the cutting operation, turning the rod j6 in the 1 ί |] | sei.s of the descent of the organ | ί Üj 5 As you can see, the stopcock according to 1 ’il invention is easy to operate and provides a series *. advantages that i · shut-off valves do not have. ·: It's traditional. ’I *: fl“ f ”'} f

As it goes without saying and as it emerges from this qux; ; ·; · J

10 precedes, the invention is not limited to the form of execution: 't ’i' ·; i fj tion. which has just been described by way of example only. · ··· ''! ‘Hfl“, ïfl it shadows, on the contrary, all the variants of: {||

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Claims (1)

»I J 1? ! ! •. ‘*, 1 -.- '** · j ψ" t, "·: · -. t U. * r, · l * · ·: 1. P. : · 'R.’V? ‘R ... | \ * '»V * .--' H 6 '*' \ AfT. ·»]), Fj '· // k?: "' -I? R ^? R · ν *; l - CLAIM - 'J -i -............................. ".>,>;" * * £.? ·. "Water tap shutdown for distribution installations' ". v \ 'y of fluids, characterized in that the valve body is formed of two hollow parts (1,2) articulated one on! $ 5 the other to enclose between them the pipe by tightening .. - of a traditional connecting member (9) between the two "I" rVi $ f.] '. parts, located opposite the hinge pin (8), in that each of the body parts has a seal. •• Λ, νΊ "seal (7) to prevent the fluid from leaking out of 1 '·' - ·“ 10 enclosure defined internally by said parts ^ ”what externally to the upper part (1) and screwed, l : N on this is provided a guide support cover (5) '' ^ ί ^ · Vv. / "* V> 'drilled in its center with a tapped hole for a threaded rod (6) , the end of which is situated inside the valve body v 15 is connected to a cutting and closing member (3 * which it moves inside the body and which comprises a shutter element { h) capable of interrupting the flow of fluid between the two pipe parts resulting from the sectioning of the latter by the cutting and closing member, in that the lower part is hollowed out (2) of the body can receive the lower end of the cutting and closing member when the latter is in the cutting and closing position of the pipe and in that a seal (10) is provided to prevent the fluid from 25 flee between the upper part (1) of the body and the cutting and closing member (3) · l * · * - .. •; ’· ·.":; ; I ..: '· - ΐ ·: | J. v s <. 1! . ':. * · =' I- · ·. "- V ·. • '1;