摘要:
A combination valve including a valve body having an inverted bi-directional valve portion and an umbrella portion is disclosed. In accordance with one aspect of the invention, a combination valve includes a valve body (12) with a substantially cylindrical portion (14) defining a flow path, a resilient umbrella valve portion (26) extending annularly from the valve body and an inverted bi-directional valve portion provided in the flow path. The inverted bi-directional valve portion includes an interior surface, an exterior surface and at least one normally closed slit (24) extending therebetween, wherein the exterior surface of the inverted bi-directional valve portion includes a generally concave curved portion when the slit is closed.
摘要:
A check valve (10) including a housing formed by a base portion (12) and a cap portion (14) positioned in telescoping relation with each other. A disc shaped valve member (20) is positioned within the housing and is defined by opposing first and second planar sides. The valve member includes a spherical portion (82) located centrally thereon and which is captured between first and second valve supports (30, 66) supported on the base portion and cap portion, respectively. The valve supports hold the valve member in engagement with a valve seat (40) in response to a fluid pressure applied at a fluid inlet (16) in the base portion to permit forward fluid flow while preventing fluid flow in the reverse direction.
摘要:
Un orifice d'air et une soupape de libération de surpression combinés destinés à une pompe submersible, comprennent un seul logement tubulaire à insérer dans un orifice se trouvant dans la paroi terminale supérieure d'une chambre, du côté de la pression de sortie de la pompe. L'extrémité supérieure de ce logement comporte un trou d'aération, et à l'intérieur du logement se trouve un siège de soupape annulaire tourné vers le haut. Une tête de soupape se trouvant à l'intérieur du logement est proportionnée pour se déplacer dans le sens de la longueur de ce dernier, vers le siège de soupape et à l'opposé de celui-ci, mais elle est normalement sollicitée pour venir en contact d'étanchéité avec le siège par un ressort se trouvant à l'intérieur dudit logement. Dans cette tête de soupape se trouve un trou de purge et une bille de soupape est enfermée dans la partie inférieure dudit logement, au-dessous du siège de la soupape pour permettre un mouvement d'obstruction et de désobstruction de l'extrémité inférieure du trou de purge se trouvant dans la tête de la soupape, à mesure que la pression régnant dans la chambre s'élève et chute. Si cette pression dépasse la force du ressort maintenant la tête de la soupape fermée, la tête sera amenée à se séparer de son siège se trouvant dans le logement, ménageant ainsi un chemin d'écoulement pour du liquide autour de la périphérie de ladite tête, dans et à travers le trou d'aération se trouvant dans la paroi terminale supérieure dudit logement.
摘要:
Un dispositif de raccordement multiple d'écoulement de fluide se compose d'une première et d'une seconde parties (20) de logement définissant chacune une surface intérieure renfermant une pluralité de canaux croisés (30, 36) s'étendant jusqu'aux bords des surfaces intérieures. Un corps est défini par la jonction des parties de logement le long de leurs surfaces intérieures, les canaux étant alignés, pour former des passages à travers le corps. Le long d'un canal, dans chaque partie de logement, adjacent au bord de la surface intérieure, se trouve une partie élargie (32) formée dans la partie de logement définissant une chambre de confinement destinée à recevoir un clapet de contrôle (34) du type à bec de canard, construit d'une seule pièce à partir d'un matériau résistant. Le clapet est fixé à l'intérieur de la chambre pour provoquer l'écoulement du fluide dans la chambre par le clapet.
摘要:
A composite elastomer-tipped tubular metallic device (10) for armature and check valve applications has a hollow tubular metal body (12) and a generally spherical elastomer ball (14) fitted into an end (16) of the body (12) so as to project outwardly beyond the body end (16). Also, the body (12) of the device has a seat structure (22) provided internally at the end (16) thereof which is adapted to capture and retain the ball (14) in the body end (16). In several embodiments of the device, the seat structure (22) is defined by a pair of axially spaced annular ribs (24,26) formed internally in the body (12) at the end (16) thereof, with the ribs (24,26) projecting radially inwardly toward a central axis (A) of the tubular body. In another embodiment, one of the ribs may be formed as a split ring received in an annular groove in an interior surface of the hollow body.
摘要:
An exhaust muffler for a marine engine comprises a first vertically oriented tubular member (128) having a lower end (128A) sealingly extended through the bottom of a main body chamber (120), and an upper end (128B) extending upwardly through the top of the chamber (120). A second tubular member (130) surrounds and is spaced from the first tubular member (128) for forming a passage (132) therebetween, and has its upper end sealingly extended through the top of the chamber (120) and its lower end extending to a point below two chamber inlets (124), yet spaced from the bottom of the chamber (120). A cap (140) seals the upper end of the second tubular member (130) to invert upwardly flowing exhaust gases and cooling fluid within the passage (132) between the first and second tubular members (128, 130) downwardly into the first tubular member (128) for discharge from the muffler.
摘要:
A needle valve is formed by molding a resilient tip (200,220) to a rigid body (204) having a tip receiving cylindrical portion (206) or barrel which includes tip retaining means (208, 210, 212) for securing the resilient tip thereto. The tip (200,220) is then ground until the outer edge (216) of the barrel (206) is engaged to form a resilient single angle or simple conical tip (200) thereby to eliminate distortions which may be present in the molded tip (220). The tip retaining means may comprise either a socket (208) formed into the distal end of the barrel (206) or a mushroom-shaped bayonet projection (212) extending therefrom.
摘要:
A flow control including an annular flexible member and an internal post disposed downstream of the flexible member is described. The annular flexible member has a deflectable inner edge that defines a passage channel and the annular flexible member and internal post define a control gap therebetween wherein the deflectable inner edge of the annular flexible member deflects axially under increasing fluid pressure to reduce the control gap and consequently control fluid flow.