LU84431A1 - IMPROVED CONNECTION BRIEF - Google Patents

Description

Main patent no. 75 375 of July 13, 1976, a panty for connecting secondary pipes to a main pipe / comprising inside an annular deflecting ring, disposed below 5 the outlet location of the main pipe in the pants. This ring allows, by pneumatic effect, liquids flowing on the walls of the main pipe to be diverted and brought back to the center of the pipe at the outlet of the pants.

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It has also been described which is the optimum geometry of the ring allowing an effective deflection of the jet of liquids and its centering during evacuation.

The increase in the diameter of the pants relative to that of the fall pipe and the formation of a central cylindrical jet detached from the walls avoids the usual formation of a liquid film plated on the wall and this in particular at the level of the connection pipes.

In order to allow a slowing down of the speed of flow of the discharged water and to allow the film plated on the internal wall of the pipe to be reformed, the invention proposes to provide the pants described in the main patent with a fixed deflector. in the housing, below 25 the outlets of the connection pipes.

; The shape of this deflector is substantially rectangular, and extends beyond the central axis of the pants; the material constituting the deflector and the shape thereof give it a certain flexibility; the deflector deforms little under the action of the liquid even under the conditions of maximum discharge flow, but on the other hand it possibly allows the passage of '' a tool inserted into the main pipe. It is thus possible to do

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2 - · pass a ferret through the installation, which the presence of the deflector will not prevent progress *

This flexible material can be / in particular, an elastomer such as an EPDI4 (ethylene propylene terpolymer) 5 class C, already used elsewhere for the production of connection joints. ‘Other features and advantages appear. will read on reading the description below. made with reference to the accompanying drawings, where. ; 10. Figure 1 is a vertical section of the pants along the line I-I of Figure 2,. Figure 2 is also a vertical section along the line II-II of Figure 1,. FIG. 3 is a top view, in section along the line III-III in FIG. 1,

In these three figures, the same reference numerals designate identical elements.

The pants according to the invention comprise a body 10, a cap 20 forming a cover, an annular ring 20 deviating 30, as well as the deflector element 40. The body 10 delimits a chamber provided with openings, for example three openings such as 11, 12, 13, to which the various secondary conduits to be connected will be connected, The body 10 and its cover 20 are preferably made of cast iron, but any other material, such as for example a molded plastic, could perfectly suit.

The deflector 40, which is the subject of this certificate of addition, has a substantially rectangular shape, and extends slightly beyond the central axis of the pants, as can be seen in Figure 3 , in plan. It has (FIG. 2) an inclined surface 41, 3 for example inclined on the order of 30 °. To improve its flexibility, the deflector 40 also includes a throttle 42, in the vicinity of the wall 14 of the body 10, where it is fixed.

5 This fixing is carried out by means of a nut 50 embedded in the deflector, tightened against the wall 14 by means of a screw 60 made of stainless steel passing through a bore 15 formed in this wall. For a correct positioning of the deflector at the time of assembly, s, · 10, it is possible to provide on the body of the pants a protruding rim 16 on which the part of the deflector adjacent to the wall will rest.

In the example of the figure in which a panty is shown comprising three connection openings, the deflector is preferably fixed on the wall situated on the median side, below the outlet of the central secondary pipe 11.

This arrangement allows easy mounting and dismounting of the deflector, the screw being below a secondary pipe, therefore on an apparent and accessible side of the pants. In addition, this position is also the best for detaching the flow of liquids away from the walls, corresponding moreover to the natural flow of the leaks which come from the mid-connection pipe 11. · - Of course, the invention applies to all variants according to its spirit. In particular, numerous forms of deflectors or embodiments can be envisaged without departing from the scope of the appended claims.

Claims (6)

1. Connection pants for secondary pipes on a main pipe, in which is provided, below the outlet of the main pipe, a ring having a coaxial inner surface 5. the main pipe at this outlet, and being placed in such a way that it leaves on its * periphery an interval for the circulation of air between it and the body of the pants, characterized in that - it is furthermore provided with a deflector (40), at its 10 below and below the outlets of the secondary pipes. 2. Connection pants according to claim 1, characterized in that the deflector has a substantially rectangular shape, and extends beyond the central axis of the pants. 3. Connection pants according to one of the preceding claims, characterized in that the deflector is made of flexible material, slightly deformable under the action of falls, but deformable when a rigid object is introduced into the pants. 4. Connection pants according to claim 3, characterized in that the flexible material · is an EPDM rubber. 4 "♦ *" 5. Connection pants according to one of the preceding claims, characterized in that the pants allow the connection of three secondary conduits (11, 12, 13), and in that the deflector is fixed on the wall (14) of the pants, below the outlet of the median secondary pipe (11). 6. Connection pants according to one of the preceding claims, characterized in that the deflector is fixed to the wall of the pants by means of a nut (50) embedded in the deflector and a screw (60) passing through a bore (15) of said wall.