A thermal deburring apparatus has a pressure-tight closeable deburring chamber connected to an environment via a ventilation passage having a passage direction; a ventilation valve closing said ventilation passage and having a stationary valve seat encompassing said ventilation passage, a valve tappet that is movable in said passage direction, and a seal affixed to said valve tappet.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 shows a longitudinal section through a ventilation valve of a thermal deburring apparatus according to the present invention.
Claims
1. A thermal deburring apparatus, comprising a pressure-tight closeable deburring chamber connected to an environment via a ventilation passage having a passage direction; a ventilation valve closing said ventilation passage and having a stationary valve seat encompassing said ventilation passage, a valve tappet that is movable in said passage direction, and a seal affixed to said valve tappet.
2. A thermal deburring apparatus as defined in claim 1; and further comprising an actuator which drives said valve tappet, said valve tappet with said actuator being detachably connected to said deburring chamber.
3. A thermal deburring apparatus as defined in claim 2, wherein said actuator is configured as a simply acting fluid cylinder.
4. A thermal deburring apparatus as defined in claim 2; and further comprising a bayonet connection through which said valve tappet and said actuator are detachably connected to said deburring chamber.
5. A thermal deburring apparatus as defined in claim 1, wherein said seal is composed of an inner ring, an outer ring, and a deformable ring core which is accommodated in an adapted recess of a seal support, so that said inner and outer rings are bringable into contact with said seal so that said deformable ring core is subjected to pressure on all sides.
6. A thermal deburring apparatus as defined in claim 5, wherein said seal support in which said adapted recess is provided is formed by said valve tappet.
7. A thermal deburring apparatus as defined 5, wherein at least one element selected from the group consisting of at least one of said rings, said seal support, and both has a displacement recess for said deformable ring core.
8. A thermal deburring apparatus as defined in claim 7, wherein said displacement recess is configured as a circumferential groove.
9. A thermal deburring apparatus as defined in claim 6, wherein an inner diameter of said inner ring is essentially equal to an inner diameter of said ventilation passage.
10. A thermal deburring apparatus as defined in claim 1, wherein said valve seal includes an annular valve insert with an end surface having a sealing surface which, viewed in its longitudinal section, is configured as a convex sealing surface.
11. A thermal deburring apparatus as defined in claim 10, wherein said convex sealing surface of said end surface of said annular valve insert tapers to a point.
12. A thermal deburring apparatus as defined in claim 10, wherein said valve insert has an inner diameter which in some sections is smaller than an inner diameter of said inner ring.
13. A thermal deburring apparatus as defined in claim 10, wherein said valve tappet has a protective extension which protrudes into said valve insert when said ventilation valve is closed.
14. A thermal deburring apparatus as defined in claim 10; and further comprising a static seal provided on an outer circumferential surface of said valve insert.
15. A thermal deburring apparatus as defined in claim 14, wherein said static seal is configured as an O-ring.
Patent Application
20070221875
