CZ2000986A3 - Valve for aerating pipes - Google Patents

Description

Technical field

BACKGROUND OF THE INVENTION The present invention relates to a pipe aeration valve with a sleeve for connection to a pipe to be aerated and a lid covering the sleeve upwardly, wherein a valve unit is provided within the sleeve which provides an air inlet opening on the sleeve under vacuum in the aerated pipe. but with the overpressure in the aerated pipe interrupts the connection, and wherein the air inlet opening is provided with an insect screen.

BACKGROUND OF THE INVENTION

The sewer pipes must be aerated and vented, which is intended firstly to transfer the gases from the duct to the ambient air and secondly to achieve a pressure equalization between the ambient air and the duct. Insufficient aeration may cause the siphon to be sucked empty so that gases from the siphon can penetrate into the room. A further disadvantage consists in the generation of a noisy siphon suction noise.

Pipe aeration valves are generally provided in attic spaces. An insect screen can be introduced by the insect, whereby the pipe aeration valve is no longer fully functional or is no longer functional at all. The insect screen must then be cleaned.

79584 (79584a) φ · »· ft ft ft ft ft ft ft ft ft ft · ft ft ft · ft ft ft ft ft ft ft

Κ aeration It is known to use valves to aerate pipes of the type initially described, which for manufacturing reasons are designed as rotationally symmetrical formations. The air inlet extends over the entire circumference of the sleeve and is provided with an annular insect screen, which is provided under the hinged lid of the valve to aerate the tubes.

A design of this kind has the disadvantage that the insect screen is not demountable - in the case that the pipe aeration valve is formed in one piece, eg as a welded or glued structure - or that the insect screen is removable - if the valve is The pipe aeration valve must be completely disassembled or the pipe aeration valve must be removed and the insect screen must be pulled through the sleeve. In the first case, cleaning the insect screen is difficult and inadequate; in the second case the removal of the insect screen is complicated and carries the risk of parts being damaged and that the pipe aeration valve does not assemble properly, especially if it is not cleaning performed by experts.

A further disadvantage is that when installing the pipe aeration valve near the roof covering, ie in an inaccessible area, complete cleaning of the insect screen is difficult only, especially if such a pipe aeration valve is provided in the corner area of the roof or masonry walls.

SUMMARY OF THE INVENTION

The purpose of the invention is to avoid these disadvantages and difficulties

79584 (79584a) • ···················· Its function is to provide a valve for the aeration of pipes of the kind described above, whose insect screen can be cleaned in a simple manner. Above all, it should be possible to carry out a complete cleaning of the insect screen even if the pipe aeration valve is installed in a hard-to-reach place, especially in the corner area of the building.

This object is achieved according to the invention in that the air inlet opening extends over the nozzle at a maximum of 180 [deg.] Of the circumferential angle and that the insect screen can be completely removed from the nozzle.

In this case, the insect screen can be removed from the socket towards the side and fastened to the socket from the side.

A preferred embodiment is characterized in that the insect screen is fastened to the sleeve by a snap connection.

According to a further preferred embodiment, the insect screen is fastened to the sleeve by means of a groove connection.

A particularly easy-to-manufacture embodiment is characterized in that the insect screen is fastened to the socket by means of pins and axes.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention will be explained in more detail by means of the specific embodiments shown in the drawings in which it represents

79585 (79585a)

4 4 4 4

4 4 43 4

4 4

4 4 4 4 9 9 9 9 4 • 4 444 y 4 4 · 4 4 44 4 4 4 4 4

4 4444 4444

Fig. 1 is a cross-sectional view of the pipe aeration valve according to the invention; and Fig. 2 shows the pipe aeration valve in an oblique elevation with a partially removed insect screen.

DETAILED DESCRIPTION OF THE INVENTION

The pipe aeration valve according to the invention has a sleeve 11 which is closed at its upper end by a lid 2. At the lower end of the sleeve 11 there is provided an insert 3 having a neck 4 having different diameters so that one pipe aeration valve is connectable to different pipes. to be aerated.

Inside the valve for aerating the pipes, a diaphragm valve plate 5 is mounted which has a somewhat smaller diameter than the sleeve 11 and which abuts the annular sealing lip 6 of the sleeve by its own weight, as shown in the left half in FIG. Guides 7 are provided for guiding the valve diaphragm plate 5 inside the lid 2 so that the valve diaphragm plate 5 can move vertically upwards (cf. Fig. 1, right side) and again with its own weight strikes the annular sealing lip 6 and this completely concludes.

Starting from the annular sealing lip 6, the aeration channel extends in the direction of the peripheral wall 8 of the sleeve 11, where it opens into the aeration opening 9. The aeration opening 9 in the illustrated embodiment extends over approximately 90 ° of the peripheral angle α of the sleeve JL. a protective grid 10 against insects. For attaching the insect screen 10 to the sleeve

79584 (79584a) fc · · fc ·· fcfcfcfc ·· fcfc fcfc · · * · · · · fcfcfc · fc · · · - <I fc · · · · · fcfc · · fc · ♦ fcfc fcfc has this The grille of the axle 11, by means of which it can be attached to the pegs, respectively. gussets 12 provided on the frame 13 surrounding the aeration opening 9.

The peripheral edge 14 of the insect screen 10 abuts on this frame 13 by means of a groove 15 engaging the edge of the frame

The insect screen 10 additionally has a lower flange 16 which engages the sleeve 1 below the air inlet 9.

As can be seen in particular in FIG. 2, the insect screen can simply be pulled off the nozzle in one direction - represented by a double arrow R - and, after carrying out any required cleaning, can be simply replaced in the opposite direction without the pipe aeration valve. to make any interventions. This simple cleaning option is also provided when the pipe aeration valve is provided in a difficult-to-reach corner area.

The invention is not limited to the illustrated embodiment, but may be modified in various respects. Valve height for pipe aeration, ie. of the air supply opening, is controlled according to the maximum amount of air supply and is dependent on the circumferential angle α through which the air supply opening 9 extends. The attachment of the insect protective grid 10 to the sleeve 11 can be made in a variety of ways, for example by tongue-and-groove connection, sliding guides for sliding the insect protective grid in the axial direction of the sleeve or also by snap connections.

Represented by:

Dr. Miloš Všetečka v.r.

79585 (79585a)

Claims (5)

PATENT CLAIMS A pipe aeration valve with a sleeve (1) for connection to a pipe to be aerated and a cover (2) covering up the sleeve (1), wherein a valve unit (5, 6) is provided inside the sleeve (1), 7), which connects the air supply opening (9) provided on the sleeve (1) with a vacuum in the aerated pipe, joins the air supply pipe, but breaks the connection at overpressure in the aerated pipe, and wherein the air supply opening (9) is provided with protective an insect screen (10), characterized in that the air supply opening (9) extends around a maximum 180 ° of circumferential angle (α) and that the insect screen (10) is completely removable from the socket. Pipe aeration valve according to claim 1, characterized in that the insect screen (10) is removable to the side from the sleeve (1) and can be fixed to the sleeve (1) from the side. Pipe aeration valve according to claim 1 or 2, characterized in that the protective grille (10) can be fixed to the sleeve (1) by a snap connection. Pipe aeration valve according to claim 1 or 2, characterized in that the insect screen (10) can be fixed to the sleeve (1) by means of a groove connection. A pipe aeration valve according to claim 1 or 16 79584 (79584a) • tftftf • tftf · tftftf · tf tftftf tftftf * · · tftftf · «tftftftf • tf tftftftf» ·· * tftftf tf tftf tftf tftf tftf 2, characterized in that the insect screen (10) is fastened to the sleeve (1) by means of pins (12) and axes (11).