摘要:
An apparatus for compressing or pumping fluid includes a housing having an interior chamber. A rotating cam is rotatably mounted within an interior chamber and includes a reversible cam body configured to enable fluid to flow in a foreword direction and a reverse direction. The reversible cam body has a first sloped annular channel formed therein. The first end of the reversible cam body includes a ramp up portion, a ramp down portion, and inner and outer circumferential sidewalls that circumscribe the ramp to define the first sloped annular channel. The apparatus may include a circumferential cam gear located on the outer circumferential sidewall and a secondary drive shaft with a pinion gear to rotate the circumferential cam gear.
摘要:
A rotary displacement pump of an undulatory disk type; with a pump housing (24) comprising a front end plate (56) and a rear end plate, the pump housing enclosing a stator (40, 48), a rotor (42), a scraper (44) and a scraper guide (46), a shaft (8) extending through at least the rear end plate; the stator including a generally semi-circular arc-formed first stator member (40) and a generally semi-circular arc-formed second stator member (48), the stator, the pump housing and the scraper together with the scraper guide defining an inlet and outlet chamber, wherein at least part of the end faces of the first and second stator members being situated in the outlet chamber are oblique so as to provide an obtuse-angled transition to the inner faces of the front end plate and the rear end plate.
摘要:
A rotary displacement pump includes a stator (42) fixed in a housing (20), a rotor including a shaft portion (8), a radially protruding web (12), a scraper (110) having an engagement slot (112) engaging the protruding web (12). A guide (92) retains the scraper (110) in a circumferential direction and allows the scraper (110) to move reciprocatingly in a substantially axial direction. The scraper includes first, second and third grooves (120, 124 and 127). The grooves are designed so that they accommodate a portion of the guide (92) and allow the reciprocating movement of the scraper (110).
摘要:
The invention a rotary displacement pump including a stator (42) fixed in a housing (20) a rotor including a shaft portion (8) and a radially protruding web (12) having a configuration of an undulatory disk type; a scraper (110) having an engagement slot (112) of predetermined radial height and predetermined axial width, the engagement slot (112) engaging said protruding web (12) of said rotor; a guide (92) retains and scraper (110), configuration of a recessed plate and being—directly or indirectly—fixed in said housing (20), wherein the guide (92) retains said scraper (110) in circumferential direction and allows said scraper (110) a reciprocating movement in substantially axial direction; said scraper (110), including—a first groove (120) having a predetermined depth and extending along its radially outer edge surface,—and a second groove (124) and a third groove each having a predetermined depth and extending in radial direction along one front edge surface and along another front edge surface, respectively, of said scraper (110), said three grooves (120, 124) being designed such that they accommodate a portion of said guide (92) and allow said reciprocating movement of said scraper (110) in said substantially axial direction.
摘要:
A rotary displacement pump (2) according to the present invention is for pumping flowable viscous materials and comprises a liner (26, 36); a rotor (28) configured to be driven by a shaft (8); said rotor (28) including a shaft portion (30) and a radially protruding web (32) having a configuration of an undulatory disk type; a scraper gate (38) having an engagement slot of predetermined radial height and predetermined axial width, said engagement slot engaging said protruding web (32) of said rotor (28); said scraper gate (38) being supported by a scraper gate guide (40) so as to be retained in circumferential direction and to allow a reciprocating movement in a substantially axial direction; a pump housing (14) comprising a front end part (52) and a rear end part, said pump housing (14) enclosing said liner (26, 36), said rotor (28), said scraper gate (38) and said scraper gate guide (40), said shaft (8) extending through said rear end part of said pump housing (14); said liner (26, 36) including a first liner element (26) and a second liner element (36), said first and second liner elements (26, 36) abutting to each other laterally along a radially outer abutment portion so as to form a liner channel through which said radially protruding web (32) of said rotor (28) runs and to define an enclosure that encircles a portion of said radially protruding web (32) of said rotor (28); an inlet chamber and an outlet chamber being defined by said liner (26, 36), said scraper gate (38) and said scraper gate guide (40) or by said liner, said pump housing, said scraper gate and said scraper gate guide; said scraper gate (38) together with said scraper gate guide (40) forming a partition between said inlet chamber and said outlet chamber; said inlet and outlet chambers being provided with respective inlet and outlet ports (16, 18); said liner channel extending from said inlet chamber to said outlet chamber; said web (32) of said rotor (28) being rotatable through said inlet chamber, said liner channel, said outlet chamber and said slot of said scraper gate (38); wherein said scraper gate (38) and/or said liner (26, 36) consists of 85 to 95 Vol-% of a Polyethylene basis material having a high molecular weight of 0.6*106 g/mol to 1.4*106 g/mol, particularly of 0.8*106 g/mol to 1.2*106 g/mol, and more particularly of around 1.0*106 g/mol, and 15 to 5 Vol-% of glass particles having a spherical or oval shape distributed within said Polyethylene basis material, such that the surface of said scraper gate (38) and/or said liner (26, 36) comprising rounded surface portions formed by such glass particles constitutes a hard slide face for the flowable viscous materials to be pumped.
摘要:
A vehicle oil pump having a first member and a second member relatively rotatable around one axial center such that one of the first member and the second member is inserted in an inner circumferential side of the other, includes: a slider member interposed between the first member and the second member in a direction orthogonal to the one axial center, the slider member being relatively immovable in circumferential direction around the one axial center with respect to the first member and slidable in direction parallel to the one axial center, the vehicle oil pump being configured such that a cam groove being formed in a circumferential surface of the second member facing the first member, a projecting portion disposed on the slider member being fitted in the cam groove, and the cam groove causing the slider member to reciprocate in the one axial center direction in association with rotation of the slider member relative to the second member around the one axial center, the second member being formed with a plurality of the cam grooves, and the vehicle oil pump further comprising a cam groove switching mechanism configured to switch the cam groove in which the projecting portion of the slider member fitted from the plurality of the cam grooves.
摘要:
A rotary displacement pump of an undulatory disk type; with a pump housing (24) comprising a front end plate (56) and a rear end plate, the pump housing enclosing a stator (40, 48), a rotor (42), a scraper (44) and a scraper guide (46), a shaft (8) extending through at least the rear end plate; the stator including a generally semi-circular arc-formed first stator member (40) and a generally semi-circular arc-formed second stator member (48), the stator, the pump housing and the scraper together with the scraper guide defining an inlet and outlet chamber, wherein at least part of the end faces of the first and second stator members being situated in the outlet chamber are oblique so as to provide an obtuse-angled transition to the inner faces of the front end plate and the rear end plate.
摘要:
A fluid pump of the present invention comprises a rotating chamber, a rotor which rotates about a rotating axis within the rotating chamber and includes a hub and a vane protruding radially outward from the hub; and a pair of blocking walls which cooperate with the vane and linearly move upon rotation of the rotor. A suction port for suction of a fluid and a discharge port for discharge of the fluid are provided at both positions adjacent to the pair of the blocking walls which are interposed between the ports.