DE3019926A1 - CHECK VALVE - Google Patents

Description

MTU ENGINE AND TURBINE UNION
FRIEDRIOHSHAi ¹ EN GMBH

Friedrichshafen

check valve

The invention relates to a check valve for gases with a rigid closure part which is movably guided in a valve housing and with a device for damping the movement of the closure part when the valve is closed. The damping is intended to result in the hard hitting of the closure part on its seat and the stress resulting therefrom of the valve can be avoided by the high mass deceleration.

It is known that such a damping by a between the closure part and the valve housing when closing the To achieve valve-building air cushion. This attenuation however, acts in both directions of movement of the closure part, thereby opening the valve in an undesirable manner is delayed. The necessary fits also require a relatively high manufacturing cost.

It is the object of the invention to avoid these disadvantages and to specify effective damping that can only be used in the Closing direction acts on the closure part and can be produced with little manufacturing effort.

This object is achieved by a damping mass that is used in open valve by a damping spring against an im Valve housing arranged stop is pressed and to which the closure part during the closing process shortly before reaching its Closed position to slow down its closing speed bumps.

05/22/80

gm-ms 8 0 17

130049/0 197

The invention can be represented by parts that are easy to manufacture will. There are no tight manufacturing tolerances to be observed. Effects on the mode of operation due to temperature changes are not available.

To reduce vibration processes, it is also proposed that that the damping mass as one filled with fine-grained particles Hollow body is formed.

This measure can also easily increase the damping mass by increasing or reducing the size of the filling changed and thus adapted to the needs.

An exemplary embodiment is shown in the drawing and is described in more detail below.

The drawing shows a check valve in the closed (left-hand side) and open (right-hand side) position, with a closure part 11 which is movably guided in a valve housing 12. A valve spring 13 acts on the closure part 11 in the closing direction. The valve is opened when there is sufficient gas pressure, represented by an arrow 14.

A damping mass consists of a hollow body 15, which with fine-grained particles 18 and closed by a ball 19. This creates a damping effect in a known manner caused by their movement and a self-adjusting oscillation process dies away quickly.

When the valve is open, this damping mass is replaced by a Damping spring 16 against a arranged in the valve housing 12 Stop 17 pressed. During the closing process, the closure part 11 strikes shortly before reaching its closed position against the Hollow body 15 of the damping mass. This delays its closing speed and thus the placement of the closure part damped on its seat in the valve housing.

^{22 05 80} 8 0 17

gm-ms ouif

130049/0197

Blank page

Claims (1)

MTU MOTOREN- UND TURBINEN-UNION PIIEDRIOHSHAFEN, GMBH Friedrichshafen Pate η tan s ρ r ü c h e; 1. Check valve for gases with a rigid closure part, which is movably guided in a valve housing and with a device for damping the movement of the closure part when the valve is closed, characterized by 5 _; a damping mass, which when the valve is open by a; =, Dämpfuiigsfejder (16) is pressed against a stop (17) arranged in the valve housing (12) and against which the valve; final part (11) during the closing process shortly before reaching its closed position to delay its closing speed; - 2vRüöks6hlagventil according to claim 1, characterized in that the damping mass is designed as a hollow body (15) filled with fine-grained particles (18). 05/22/80 "8 0 17 gm-ms. ■: ■■ _ :. ■■■; ■ - -." ..- .; ■■ 1.-3 0 0.4 9 / Q.19 7-