Abstract:
A pumping assembly for feeding fuel, preferably diesel fuel, to an internal combustion engine, has a pump body (4, 9), at least one cylinder (14) formed in the pump body (4, 9), a closing lid (29) defining, together with the pump body (4, 9), an intake chamber (39) for drawing the fuel into the cylinder (14), an annular tooth (32) projecting from the closing lid (29) and an annular recess (35) formed in the pump body (4, 9) for receiving and housing the annular tooth (32) so as to couple the pump body (4, 9) and the closing lid (29) together in a fluid-tight manner.
Abstract:
A fluid cylinder block includes a body having a plurality of bores formed therein that intersect at a junction, and a stress distributing joint comprising a groove formed in the body adjacent opposing bores of the plurality of bores on each side of the junction, wherein the grooves include a major dimension that is greater than a diameter of the opposing bores.
Abstract:
A pump unit for supplying fuel, preferably diesel oil, to an internal combustion engine has at least two cylinders (10), which are formed in at least one head (9), are slidingly engaged by respective pistons (13), and communicate hydraulically with respective fuel inlets (11) in the cylinders (10) via respective interposed intake valves (15) provided with respective valve bodies (16) incorporated in the head (9); the inlets (11) of all the cylinders (10) being closed by a single cover (33) fixed to the head (9).
Abstract:
A valve body (17) has a first main channel (39), a second main channel (76) and a plurality of inlet channels (53). Each inlet channel (53) has a first opening (55) and a second opening (57) and a fluid pathway (58) extending between its first opening (55) and its second opening (57). Each first opening (55) provides an entry into its respective pathway (58) and provides an entry into the valve body (17). Each second opening (57) provides an exit from its respective pathway (58) into the first main channel (39). A suction valve seat (43) delimits a first outlet (25). The first outlet (25) opens into the first main channel (39). The suction valve seat (43) has a continuous valve seating surface (45) without any through channels opening therethrough. A discharge valve seat delimits a second outlet (29). The second outlet (29) opens into the second main channel (76).
Abstract:
This application describes systems for protecting steel fluid end body flow passages from direct impingement by high pressure fracking fluid. This fluid end body flow passages are protected by components in the form of cartridges and sleeves in one embodiment and a sleeve in another embodiment. This disclosure also describes kits and methods which utilize these systems to provide enhanced erosion and corrosion resistance as well as improved fatigue properties and extended service life to these fluid ends.
Abstract:
Pumps used in liquid chromatography applications employ actuators for pressurizing and moving liquid. An actuator includes a pump head having a chamber, a gland, a movable rod extending through the gland into the chamber of the pump head, and a plunger seal disposed in the gland around the rod for sealing against fluidic leakage from the chamber. The plunger seal has an annular flange that provides an OD (outer diameter) seal against the gland. The flange defines a seal cavity. The pump head further includes an outlet port and an outlet channel. One end of the outlet channel is in communication with the outlet port and the other end of the outlet channel opens into the seal cavity of the plunger seal. The outlet channel provides a flow path for liquid in the chamber to travel towards the outlet port in response to movement of the rod.
Abstract:
Offenbart ist eine Anschlussplatte für eine hydrostatische Kolbenmaschine mit zwei Anschlussöffnungen an gegenüberliegenden Seitenflächen der Anschlussplatte. Diese sind versetzt zu einer Hauptachse der Anschlussplatte auf einer gemeinsamen Seite angeordnet. Von einer Innenseite der Anschlussplatte her sind zwei schlitzförmige Aussparungen ausgebildet, die jeweils im Bereich ihres ersten Endabschnitts mit einer der Anschlussöffnungen zum Verbinden der Kolbenmaschine mit einem hydraulischen Kreislauf verbunden sind. Eine Ventilpatrone ist in einer Einbaubohrung der Anschlussplatte eingesetzt. Diese ist bezüglich der Anschlussöffnungen gegenüberliegend von der Plattenachse in der Anschlussplatte ausgebildet und erstreckt sich etwa parallel zu Achsen der Anschlussöffnungen. Die Ventilpatrone ist mit einem der Schlitze hydraulisch verbunden.
Abstract:
The suction arrangement of the present invention is for a hermetic compressor of the type which comprises: a hermetic shell (1); a cylinder block (2) defining, in a single piece, a shell portion (Ia) and a compression cylinder (3) having an end (3a) opened to the exterior of the hermetic shell (1) and closed by a valve plate (5); a head (10) affixed to the cylinder block (2) onto the valve plate (5) so as to define, with the latter, at least one suction chamber (11) receiving refrigerant gas from a gas inlet pipe (20) external to the hermetic shell (1). The suction arrangement of the present invention comprises a gas inlet duct (30) defined through the shell portion (Ia) and through the valve plate (5) and having an outer end (31) hermetically coupled to the gas inlet pipe (20) and an inner end (32) opened to the suction chamber (11).
Abstract:
Die Erfindung betrifft eine Kolbenpumpe für ein Hochdruckreinigungsgerät mit mindestens einem Pumpraum, in den ein hin und her bewegbarer Kolben eintaucht und der mit einer Saugleitung und mit einer Druckleitung verbunden ist, wobei die Kolbenpumpe einen aus Kunststoff gefertigten Pumpenblock und einen aus Kunststoff gefertigten Pumpenkopf aufweist, wobei der Pumpenblock den mindestens einen Pumpraum ausbildet und der Pumpenkopf die Druckleitung umfasst. Um die Kolbenpumpe kostengünstiger herstellen zu können, wird erfindungsgemäß vorgeschlagen, dass der Pumpenkopf stoffschlüssig mit dem Pumpenblock verbunden ist.