1340results about "Pump assemblies" patented technology

A lightweight carbon fiber air/gas supply vessel storing high pressure air/gas. The air/gas supply vessel output is controlled by an adjustable pressure reduction valve which varies output pressure from very high to low pressure levels. An alternative multi-valve system uses a first pressure reduction valve to reduce output pressure from the very high levels in the air/gas supply vessel to an intermediate pressure level, and a second pressure reduction valve that reduces the air/gas pressure from the intermediate level to a fine tunable low pressure level. In both embodiments, the output of the last pressure reduction valve used is connected to a high pressure cable which in turn uses a standard universal fitting which can be coupled to most pneumatically powered equipment. Additional high pressure reservoir vessels can be used to replenish the lightweight air/gas supply vessel when its supply of air/gas is depleted.

A control device for at least one consumer of a motor vehicle, having an engine and at least one pump for supplying a medium via at least one pressure line to the at least one consumer, is configured to supply the medium to the at least one consumer before the engine is started. The pump can be driven by an electric motor or by the engine of the motor vehicle or alternatingly by the electric motor and the engine.

A fluid tank fluid is provided which includes a bubble removing device provided therein to remove bubbles from the fluid. The bubble removing device includes a cyclone chamber for generating a swirling current in the fluid flowing therethrough to separate bubbles from the fluid. At least one outflow port is provided through which the fluid from which the bubbles have been separated flows from the cyclone chamber. And an exhaust port is provided through which the bubbles separated from the fluid are driven from the cyclone chamber.

A unitized hydraulic system comprises a tank for holding hydraulic fluid, a hydraulic pump powered by a pump motor for receiving hydraulic fluid from the tank and creating a high pressure stream of fluid, a control valve for receiving hydraulic fluid from the hydraulic pump and regulating movement of the hydraulic fluid within the system, an actuator for receiving hydraulic fluid from the control valve to drive a shaft coupled to the actuator, and a controller in communication with the pump motor and configured to provide controlled actuation of the pump motor, wherein all components are coupled together to form a single unit which is capable of being easily installed and interchanged.

An improved vacuum material handler having an onboard drive engine powering a vacuum pump and a hydraulic pump. The vacuum material handler also having a frame with integrated forklift lugs.

A fluid-driven actuator system includes a fluid-driven actuator and at least one proportional control valve and at least one pump connected to the fluid-driven actuator to provide fluid to operate the fluid-driven actuator. The at least one pump includes at least one fluid driver having a prime mover and a fluid displacement assembly to be driven by the prime mover such that fluid is transferred from the pump inlet to the pump outlet. The fluid driven actuator system also includes a controller that establishes at least one of a speed and a torque of the at least one prime mover to adjust at least one of a flow in the fluid system to a flow set point and a pressure in the fluid system to pressure set point and a concurrently establishes an opening of the at least one proportional control valve to adjust at least one of the flow to the flow set point and the pressure to the pressure set point.

A hydraulic controller in which driving sound and the number of parts can be reduced, and a long service life can be realized, and a hydraulic drive unit provided with said hydraulic controller. The hydraulic controller for a hydraulic drive unit includes a housing that includes an electric motor housing configured to house an electric motor, an oil pump housing configured to house a hydraulic pump, and a valve housing configured to house valves are integrated together.

The invention relates to an oil cylinder of a hydraulic system, in particular to a fully sealed oil cylinder of an integrated hydraulic hoister. The fully sealed oil cylinder comprises a fully sealed oil storage tank internally provided with a soft leather bag and an oil absorption port connector, an oil returning port connector, an oil filling port connector and an air bag connector are arranged on the tank. The fully sealed oil cylinder of the integrated hydraulic hoister has large oil storage capacity and can be installed in all directions without oil leakage; the oil fluid is separated from the external air so that no oxidation and pollution of oil fluid by the external environment are guaranteed and the oil fluid has high cleanness so as to ensure the safe and reliable work of the integrated hydraulic hoister; during the debugging, the oil cylinder can meet the debugging working condition of gradual oil filling and air exhaust; also the oil cylinder of the invention can guarantee the integrated hydraulic hoister to adapt to different climates and work normally no matter in the south or the north or in summer or in winter.

A hydraulic actuator system designed to inwardly contain major portions of its control system. The system includes a unique non-vented and air tight sealed reservoir with expandable bladder. This inward control system and non-vented reservoir optimize space saving advantages and eliminate the need for external elements typically used in a hydraulic system, while extending fluid life, reducing cavitation and fluid oxidation, and increasing performance in the hydraulic system. The system configurations can work for both a single or dual acting linear actuator and further can involve a motor, hydraulic pump, and electro-hydraulic valve circuit used to control fluid throughout the system.

A hydraulic unit for industrial trucks, comprising a motor pump unit which is directly attached to a tank, a reflux filter which has an elongate filter casing for a filtering element adapted to be introduced into the tank through an opening, a hose coupling, and an outlet opening, wherein the filtering element is disposed in the flow path between the hose coupling and the outlet opening, a reflux hose between the motor pump unit and the hose coupling, and a closure for the reflux filter, wherein the reflux hose extends within the tank and the hose coupling is disposed within the tank.

The invention relates to a hydraulic oil tank, which comprises an oil tank body and an isolating component arranged in the oil tank body, wherein the oil tank body is provided with an oil return opening and an oil suction opening; the isolating component comprises at least two clapboards which divide the cavity of the oil tank body into three or more than three oil chambers; the oil return opening and the oil suction opening are positioned in two different oil chambers; all the clapboards are provided with meshes for allowing oil to pass through, so that the oil which enters the oil tank body by way of the oil return opening can pass through all the oil chambers in the oil tank body and then enters the oil suction opening; the size of each through hole which forms the mesh is big enough for the effect that air in the oil can be removed when the oil passes through the through holes. According to the hydraulic oil tank provided by the invention, effects of heat radiation, air separation and impurity precipitation are good, and bubbles in the hydraulic oil can be well removed.

A compressed air energy storage system integrated with a source of secondary heat, such as a simple cycle gas turbine, to increase power production and to provide power regulation through the use of stored compressed air heated by said secondary heat to provide power augmentation.

The invention relates to a hydraulic pressurizing oil tank. The hydraulic pressurizing oil tank comprises a tank body and a piston in the tank body and is characterized in that the tank body is provided with a first cavity and a second cavity, the piston is positioned in the second cavity and fixedly connected with a piston rod, the piston rod is positioned in the first cavity and provided with an inner cavity, and a spring is connected in the inner cavity and fixedly connected with the inner wall of the tank body. The hydraulic pressurizing oil tank is simple in structure and has the advantages of effectiveness in pressurizing, high operational reliability and long service life due to adoption of self-supply type pressurizing as compared with a traditional pressurizing oil tank.

A material handling machine can be operated in a bucket shake control mode to override proportional control of a valve controlling fluid flow to and from a bucket tilt cylinder of the machine. Fluid flow through the valve upon actuation of a tilt controller such a joystick therefore is proportional to actuator stroke when the shake control system is deactivated and is always maximized regardless of actuator stroke when the shake control system is activated. Bucket shake control is activated through the manual operation of a control device such as a joystick-mounted switch. As a result of this arrangement, proportional control valve actuation always occurs immediately upon bucket tilt controller movement in a direction that is dependent upon a direction of bucket tilt controller movement from the neutral position thereof

There is disclosed a pressure oil box capable of removing gas from the hydraulic oil liquid, in which an inert gas filling ring is mounted in the lower part of the pressure oil box and connected with the inert gas source. A vacuum-pumping device is connected with the top of the pressure oil box via a vacuum pump through first and second switch valves. An alternating pressure exerting device consists of a gasbag, a vacuum pump, first, third and fourth switch valves and an air filter. The vacuum pump is connected with the gasbag mounted in the pressure oil box through the first and third switch valves and the air filter is connected with the gasbag mounted in the pressure oil box through the fourth and third switch valves. In the lower part of the pressure oil box is opened an oil mouth connected with the hydraulic pump.

An accumulator tank for handling a heat transfer medium, is disclosed having a tank top section and a bottom section. The accumulator tank is connected to at least one heat emitting system and at least one heat-absorbing system. The accumulator tank has a plurality of partition walls located inside the tank and arranged between the bottom section and the top section for the purpose of dividing the tank into a plurality of spaces. The systems being each connected to at least one respective space so that a temperature gradient is created between the bottom section and the top section. Also disclosed is a system for distributing and handling heat and/or cold, including the accumulator tank.

The invention relates to a totally closed hydraulic oil tank applied in a hydraulic circulatory system and taking hydraulic oil as circulatory hydraulic oil for use in a matching manner. The totally closed hydraulic oil tank includes an oil storage tank, an oil-gas separation device, an air filter, a return oil filter, a fuel charger, an oil level indicator, an oil outlet pipe and a flow guide device, wherein the volume of the oil-gas separation device is compacted and expanded to provide the space required for oil storage or oil supply of the hydraulic system, so that the hydraulic oil and air are in respective containers, pollution sources brought when air is breathed can be eliminated, the entire hydraulic system operates in a totally closed state, the hydraulic oil is controlled and prevented from pollution radically, the reliability and service lives of components can be effectively improved and prolonged, and further, the maintenance-free hydraulic system can be realized. The totally closed hydraulic oil tank is particularly suitable for dump trucks and loading trucks, and can be matched for use on various hydraulic systems under harsh environment.