GB2078343A

GB2078343A - Flow control valve

Info

Publication number: GB2078343A
Application number: GB8033745A
Authority: GB
Original assignee: BALLESTER JULIA C
Current assignee: BALLESTER JULIA C
Priority date: 1980-06-18
Filing date: 1980-10-20
Publication date: 1982-01-06
Also published as: ES251484U; DK182281A; ES251484Y; FR2485148B3; NO811373L; GB2078343B; BE888606A; IT8053520V0; NL190340B; FR2485148A3; JPS5710555U; NL8102545A; NL190340C; ATA184781A; SE8102682L; AT387831B; BR6001569U; FI811619L; IT8068442A0; IT1129261B

Abstract

Flow of liquid from inlet duct 13 to outlet duct 14 is controlled by a quarter-turn of valve member 2 effected by control knob 3. Member 2 has double O-ring seals 9 to prevent leakage and an elbowed passage 18 to reduce turbulence. A sealing ring 8 in the outlet duct which engages the part-spherical body 16 is held in place by a resilient snap-in ring 4. <IMAGE>

Description

SPECIFICATION Flow control valve The present invention relates to a valve for controlling the flow of fluids, especially liquids, having a valve body and a rotary valve member mounted within the body to control flow from an inlet duct to an outlet duct.

In accordance with the invention there is provided a valve for fluids comprising a valve body with an inlet duct, and a rotatable valve member mounted within the valve body coaxially with the inlet duct and having an actuating shank projecting from the valve body in axial alignment with the inlet duct for actuation by a control element, the valve member being constructed and arranged to control the flow of fluid from the inlet duct to an outlet duct in the valve body.

Preferably the valve body has two grooves fitted with O-ring seals to prevent leakage of the fluid along the actuating shank. This double toric seal provides greater reliability of the fluid-tightness against possible leakage.

In an angle valve in accordance with the invention the valve body has an elbowed passage of which one end is aligned with the axis of the inlet duct and the other end is aligned with an outlet duct perpendiocular to the inlet duct. The elbowed passage following an arcuate course through the valve body ensures a smooth flow of fluid with reduced turbulence.

In the outlet duct of a preferred embodiment, to ensure perfect fluid-tightness, there is disposed a special seal having a peripheral step by means of which it rests and forms a stop against a projection which the said outlet duct has for this purpose.

The passage of fluid through the outlet duct could produce axial displacement of the special seal, for which reason an anchoring member is provided for the said special seal.

The anchoring memberforthe special seal is introduced through the outlet duct and, being of greater diameter than the said duct, is compressed due to the grooves which it presents and to its elastic nature, which allows it to expand and return to its original state on being seated in the recess presented by the outlet duct, so that both the special seal and the said anchoring member remain fixed and immovable.

With the object of facilitating explanation, the present specification is accompanied by a sheet of drawings in which is shown an embodiment given by way of example.

In the drawings: Figure lisa sectional view of the assembled valve unit; Figure 2 corresponds to a profile view of the body of the valve; Figure 3 is an elevational view of the body of the valve; Figure 4 is a sectional elevational view of the body of the valve; Figure 5 corresponds to an elevational view of the one-piece body; Figure 6 is a plan view of the one-piece body; Figure 7 is a sectional side view of the one-piece body; Figure 8 corresponds to an elevational view, partly in section, of the special seal; Figure 9 is an elevational view in diametral section, of the anchoring member; Figure 10 is an elevational view of the anchoring member; Figure 11 corresponds to a plan view of the anchoring member.

The structure and operation of the valve to which the invention relates can be deduced practically speaking from the foregoing description and the accompanying drawings, the following being a detailed description of the valve: In a body 1 of the valve, there is disposed coaxially with an inlet duct 13 and internally a one-piece body 2 of such shape that it permits the opening and closing of an outlet duct 14 on being actuated buy a control knob 3.

The one-piece body 2, which is of cylindrical form and obtained by machining, is constituted by an actuating shank 15 and a part-spherical formation or ball 16.

The inlet orifice 18 of the ball 16 is rounded forming an elbow, in order to avoid the turbulence which is produced when the liquid passes from the inlet duct to the outlet duct, the said orifice being of cylindrical form.

The one-piece body 2 has two grooves 17 in which are seated two O-ring seals 9, which provide a double safety system against possible leakages of fluid.

The said one-piece body 2 is operated through the medium of the actuating shank 15 by means of the control knob 3 connected to the said shank 15 by means of a screw 11. The full opening and shut-off of the flow of fluid is obtained by only a quarter of a turn given to the control knob 3.

In the outlet duct 14, in the zone of contact with the ball 16 of the one-piece body 2, there is arranged a special seal 8 having a peripheral step 20 for resting and forming a stop against a projection 21 which the outlet duct 14 has in its interior for this purpose.

In order to prevent the special seal 8 being able to shift axially because of the passage of fluid, an anchoring member 4 is advantageously provided.

The anchoring member 4, which is of larger diameter than the outlet duct 14, is of a resilient nature and has a number of grooves 22 which allow it to be compressed on being introduced into the said outlet duct. Due to its elastic nature, the said anchoring member 4 expands, returning to its original state, when it is seated in the recess 23 presented internally by the outlet duct 14, the special seal 8 and the said anchoring member 4 being fixed and immovable.

The valve moreover has the accessories common to this type of valve. In this sense, the drawings show a bicone 7, a washer 6 and a nut 5 in the outlet duct for connecting up a pipe, and a guard 10 and a ring or washer 12 on the inlet duct.

It will be seen that the valve described is constructed of a reduced number of parts, thereby facilitating and simplifying assembly, by comparison with valves in existence on the market and employed for similar purposes.

Claims

1. A valve for fluids comprising a valve body with an inlet duct, and a rotatable valve member mounted within the valve body coaxially with the inlet duct and having an actuating shank projecting from the valve body in axial alignment with the inlet duct for actuation by a control element, the valve member being constructed and arranged to control the flow of fluid from the inlet duct to an outlet duct in the valve body.

2. Avalve as claimed in claim 1 in which the valve body has two grooves fitted with O-ring seals to prevent leakage of the fluid along the actuating shank.

3. Avalve as claimed in claim 1 or 2 in which the valve body has an elbowed passage of which one end is aligned with the axis of the inlet duct and the other end is aligned with an outlet duct perpendicu lar to the inlet duct.

4. A valve as claimed in any of claims 1 to 3 in which the valve member, in the zone of the outlet duct, has a part-spherical formation.

5. A valve as claimed in any of the preceding claims in which the outlet duct contains a sealing ring having a peripheral step which rests against a corresponding projection in the wall of the outlet duct.

6. A valve as claimed in claim 5 in which the sealing ring is retained in position by a resilient ring snap-fitted into a recess in the outlet duct.