A valve with a spring
AssigneeValmet Flow Control Oy
InventorHenri HAKULINEN
Life of this patent
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Abstract
This invention relates to a valve (17) including a closure member, a shaft (101) which is connected to the closure member for adjusting a position of the closure member and which has an end (102) protruding to an outside of the valve via a packing cavity (18). The valve (17) also includes a valve packing (103) arranged in 5 the packing cavity (18) to surround the shaft (101), and a spring (1) provided in the packing cavity (18) to contact the valve packing (103). In order to provide an improved sealing performance to the valve packing (103), the spring (1) comprises an upper support surface (2), a lower support surface (3), and at least two segments (4) arranged between the upper (2) and the lower support surface (3), 10 wherein at least one of the segments (4) comprises a spring cell (5).
Claims10
A valve including:
- a closure member,
- a shaft which is connected to the closure member for adjusting a position of the closure member and which has an end protruding to an outside of the valve via a packing cavity,
- a valve packing arranged in the packing cavity to surround the shaft, and
- a spring provided in the packing cavity to contact the valve packing, wherein the spring comprises:
- an upper support surface,
- a lower support surface,
- at least two segments arranged between the upper and the lower support surface, wherein
- at least one of the segments comprises a spring cell, the spring cell having an upper section connecting to the upper support surface and an opposite lower section connecting to the lower support surface, the upper section and the lower section comprising two opposite arch segments, and at least one compression limiter extending from one of the upper and the lower support surface towards the other one of the upper and the lower support surface a part of the distance between the upper and the lower support surface.
(canceled)
Dependencies are inferred from the claim text.