DE2023961A1 - Flap valve - Google Patents

Description

4 <»l Herne, 8000 Munich 25,

Frelligrathstrasse 1? 'i \ 1 »» 1 ■ r »ύΛ L · * L ·. Eisenacher Strasse 17

Pottle * 140 Dipi, -lnf |. KH Bahr p, t .. * _nw . B.tner

Pt app. H.rrm.nn-TrenUpohl Dipl-PHVt. EdUdld ΕθΙΤίθΓ Telephone: 39 8011

Telephone: 51013 f 7th 39 8012

si » ¹⁴ Dipl.-Ing. W. Herrmann-Trentepohl ^{} 98013}

Telegram address: βατεμτακιια / ΧΙτε telegram address. Behrpatents Herne PATENTANWALTB Babetzpat Munich Telex 08 229 853 Telex 05 245 «2 I bank accounts;

Bavarian Association Bank Munich 952287 Dresdner Bank AG Herne 20243 «Postal check account Dortmund 558 48

L J

Ref .:

M 02300 B / Hi

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Munich

May 13, 1970 Masheder Design Studies Limited.

"Flap valve"

The invention relates to improvements in flap valves, as they are particularly suitable for systems in which the fluid flows at high speed and under high pressure.

In the parallel patent application (attorney's file M 02301) is a regulating and control valve in the form of a throttle valve, which is frustoconical Has valve seat and a closure member whose axis of rotation is offset with respect to its diameter, so that unbalanced properties arise and the displacement of the valve seat and valve drilling axis in a kind of occurs that a progressive engagement of the seat with the periphery of the closure member takes place.

According to the present invention is a flap valve proposed of the type described in the parallel application, in which the closure member freely rotates around substantially horizontal axis from a fully open position parallel to the valve bore axis, in which it is fixed

109848/1056

Hits stops, can rotate to a closed position. The closure member has a shorter wing side, the is heavier than the longer wing side, so that it assumes the closed position when there is no medium through the Valve bore flows.

Preferably, the bore of the valve body is formed so that the circumference of the upper longer wing of the closure member in close proximity to the interior of the bore when passing from the closed position over a considerable amount Movement arc is running. In this way the pressure of the medium, which tries to open the valve, is actually prevailed the upper, longer wing is combined and thus an initial movement from the closed position considerably large opening torque applied.

The special weight of the lower, shorter wing of the locking link is advantageously derived from a thickening of the profile of this limb, creating a streamlined one Shape results.

The invention is to be explained in more detail on the basis of a preferred exemplary embodiment of a flap valve, such as is shown in the drawing.

The drawing shows in

1 shows a vertical central section through the valve in the open position;

FIG. 2 is a partially sectioned front view of the valve according to FIG. 1.

The valve body B rips open a conical seat S for engagement with a corresponding mating surface of the closure member D, which can rotate freely on pins P and T ₂ .

109848/1056 ^ßAD ORIGINAL

These pins have a horizontal axis which is arranged in a position opposite the valve seat that the perimeters of the shorter and longer wings of the link D can progressively engage the seat.

The pins P limit the fully open position of the valve parallel to the axis of the valve body bore «

The nose of the closure member D is noticeably somewhat thicker and thus heavier than the rear or longer wing part, so that the valve is normally closed Takes position.

The valve body B is like this inside over its upper part formed that the circumference of the upper wing of the shutter- || limb, whose path is marked, in close proximity to the inner surface of the body up to about 45 of its full 90 ° travel from the closed to the open position lies.

The lower wing of the closure member moves into the flow, increasing the frontal area. Thus the Pressure difference continuously across the top, creating a strong opening torque.

The combined open and over roll flap valve principle gives together with the geometry shown, a valve with a rapid snap opening and a smooth progressive pop- ■. ^ free lock, so that it can be used in all modern high-speed high-pressure systems can be used.

Since it also has a self-cleaning effect, can you can even use it in connection with dirty media.

- Patent claims: -

10 9 8 48 / ins f> - 4 -

Claims (3)

Claims (1.} flap valve with a frustoconical valve seat in a bore of the valve body and a circular closure member which is rotatable about pins whose center of rotation is offset from the parallel normal diameter of the closure member, characterized in that the closure member (D) is parallel from a fully open position to the valve bore axis, in which it abuts against fixed stops (P), can be moved into a closed position and has a shorter of its two wings which is heavier than the longer wing, so that the closure member assumes the closed position when no medium passes through the Valve bore flows. 2. Flap valve according to claim 1, characterized ge kenn draws that the bore of the valve body is designed so that it is close to the circumference of the upper longer Wing of the closure member extends over a considerable arc of movement from the closed position. 3. Flap valve according to claim 1, characterized in that the special weight of the lower shorter wing of the closure member from a thickening of the profile of this member under training stems from a streamlined shape. 109848/1051?