78results about How to "Increase fluid flow" patented technology

A heart valve prostheses includes an annular member implantable within a biological annulus, a collar extending upwardly from the annular member, and a sewing ring extending from the annular member. A spring structure couples the collar to the annular member and biases the collar to align with the annular member at a predetermined distance above the annular member. During use, the prosthesis is introduced into a biological annulus, and fasteners are directed through the sewing ring into surrounding tissue to secure the prosthesis with the annular member within the biological annulus. A mechanical or bioprosthetic valve is introduced and coupled to the collar, e.g., using tabs or other connectors on the collar. The spring structure allows the collar to be directed towards the annular member and/or folded inwardly, e.g., to facilitate accessing the sewing ring to deliver fasteners.

Disclosed is a fluid flowing control device of a valve having fluid flowing paths which are made in more sophisticated configuration and by controlling the velocity of the fluid by the maximal use of available volume thereof, to thereby prevent to a maximal extent the generation of cavitation, flashing, blocking by foreign materials, and the damage of internal parts. The device includes a cage having an inside cylinder which is closely contacted with a plug, an outside cylinder which forms a plurality of holes in axial and radius directions, respectively, a first internal cylinder which forms a plurality of concave/convex grooves having rectangular sectional elbows with recess in an axial direction, a second internal cylinder which forms a plurality of holes in axial and radial directions, and upper and lower supporting plates for closely coupling the inside and outside cylinders with the first and second internal cylinders on the top and bottom ends thereof; the plug forming a sealing portion and an opening/closing portion which are in contact with a seat, on the leading end of the lower portion thereof, to thereby open/close the seat and control the fluid flow, while being moved in the inside of the cage; and the seat being in internal-contact with the plug.

A non-invasive method and apparatus are provided for treating orthostatic hypotension and for reducing the effects caused there from. An increase in blood and fluid flow in the lower extremities is achieved by vibrating the lower body of the individual at a frequency in the range of 10-120 Hz. The apparatus includes a strap for being secured to a body part of the individual's lower extremities, e.g., the sole of one's foot, and a displacement sensor which senses any movement of the body part. The displacement sensor continuously sends signals to a processor of the apparatus which indicate whether there was any movement of the body part. If the displacement sensor did not sense any substantial movement of the body part for a predetermined period of time the processor sends a signal to a vibrating mechanism. The signal activates the vibrating mechanism causing vibration of the body part for increasing blood and fluid flow in the lower extremities. The vibrating mechanism causes vibration for a predetermined period of time.

A flow valve for faucets such as kitchen and bathroom faucets includes an inlet and outlet and a transverse valve mechanism where a valve element moves toward and away from a valve seat at least partly transverse to incoming inlet flow and/or outgoing outlet flow.

The invention relates to a viscous damper to passively adjust high energy consuming clearances, belonging to the technical field of engineering vibration reduction. The viscous damper comprises a piston rod, a cylinder head, a cylinder barrel and a piston head; a damping gap is formed between the piston head and the cylinder barrel to form a main fluid channel; an annular soft metal valve is arranged on the piston head, the gap between the annular soft metal valve and the cylinder barrel is formed to be a smallest gap through which the fluid passes; both sides of the piston head are provided with guide round disks. The viscous damper has the characteristics of stable damping force under the complex working condition, resistance of big impact load, simple structure and the like.

The invention relates to an automatic magnetic check valve, which comprises a cover body, an upper magnet, a valve body, a shaft seat, a valve, a lower magnet and a sealing ring, wherein the shaft seat is arranged on one side of the bottom of the valve body; the valve is hinged on the shaft seat; the upper magnet is arranged on the valve body; the lower magnet is arranged on the valve; the sealing ring is arranged between the valve and the valve body; and the upper magnet and the lower magnet are in a Z-plane asymmetric structure. When asymmetric magnets attract each other, an Fx component force not equal to zero is generated, the consistency of the repeated opening/closing action of the valve is greatly improved under the action of the Fx, and the valve is closed to be accurately attracted and sealed; the valve body has a high flow structure, so that an effective area of fluid flowing through the valve body is greatly improved; the valve body is hardly wound with hair and cotton and is cleaning-free; the valve can realize 90-degree opening in a circular pipeline, the drainage is not hindered and the flow velocity is high; and the overflow of sewage is prevented, polluted air, insects and cockroaches are prevented. The check valve is conveniently arranged at a sewage pipeline to replace the conventional water return bend, is suitable for sewage drainage, and is also suitable for other fluid pipelines with one-way flow requirement.

A dual-cavity fluid conveying apparatus includes a flow-converging device, a first cavity body, and a second cavity body. The flow-converging device includes two sides corresponding to each other; a first channel and a second channel both passing through the two sides; and an inlet passage and an outlet passage both arranged between the two sides and communicated with the first channel and the second channel, respectively. The first cavity body and the second cavity body are symmetrically disposed at the two sides of the flow-converging device, wherein the first cavity body and the second cavity body each includes a valve cover disposed on one side of the flow-converging device, a valve membrane interposed between the one side of the flow-converging device and the valve cover, and an actuating device disposed circumferentially on the valve cover so as to define, together with the valve cover, a pressure chamber.

The invention relates to a spiral-flow type jet pump. The jet pump comprises a water inlet pipe, a spiral flow generator, a nozzle, a throat pipe, a water suction pipe, a diffusion pipe and a water outlet pipe. The jet pump is sequentially provided with the water inlet pipe, the spiral flow generator, the nozzle, the water suction pipe, the throat pipe, the diffusion pipe and the water outlet pipe from left to right. An adjustable type spiral flow generating device is arranged in front of the nozzle of the jet pump, and the incoming flow of the water inlet pipe is divided into a plurality of strands and enters the position close to the nozzle in the symmetrically-tangent direction so as to form a vortex, the flow of sucked liquid is accordingly increased, and the efficiency of the jet pump is improved. The spiral-flow type jet pump is simple in structure, easy to mount and low in cost. According to different working conditions of the jet pump, different spiral flow intensities can be adjusted, so that an optimal operating point is obtained.

The present invention provides an integral whole path ball valve which belongs to mechanical technique field and solves the problem that the existing flange type ball valve is small in flux and bad in safety. The integral whole path ball valve includes a valve body, a valve core, a valve spindle and a handle, the valve core is mounted in the valve body. The valve spindle passes through the valve body with inner end connected to the valve core and the outer end connected to the handle. The valve body is still disposed with a cylinder shape regulation valve seat which is connected to the valve body by screw and is abutted to the valve core. The valve body is an integral structure, and is disposed with a mounting hole on its top, the diameter of the mounting hole is larger than the outer diameter of the valve core, a press cover is disposed at the mounting hole and is connected to the valve body, and the valve spindle passes through the press cover. The integral whole path ball valve is simple in structure, low in cost, and can be adapted to various large flux pipe systems.

A self-circulation cavitation-preventing machine box suitable for a centrifugal/mixed-flow type water pump is characterized in that a backflow channel which guides high-pressure fluid on the rear portion of a water pump impeller into an inlet of the water pump is formed in the machine box so that the pressure intensity of the inlet of the water pump can be increased, and the pressure intensity ofthe fluid in the inlet of the water pump can be higher than the corresponding vaporization pressure to prevent vaporization from happening. An inlet of the backflow channel is formed in the rear portion of the water pump impeller, and an outlet of the backflow channel is formed in the inlet of the water pump. A temperature and pressure sensor is installed in the inlet of the water pump and used for detecting the pressure and the temperature of the fluid in the inlet to determine whether the pressure is equal to the saturated vapor pressure corresponding to the current water temperature or not.A valve is arranged in the backflow channel. According to the self-circulation cavitation-preventing machine box suitable for the centrifugal/mixed-flow type water pump, a backflow device is used, the high-pressure fluid on the rear portion of the impeller is jetted to the inlet of the water pump again through the backflow device, the pressure of the inlet of the water pump is improved, the phenomenon that the pressure of the fluid is equal to the vaporization pressure is avoided, the generation of vapor bubbles is avoided, and the influence of cavitation is fundamentally avoided.

The invention relates to a circular shear device for a coiled tubing four-flashboard blowout preventer. According to the technical scheme, the circular shear device for the coiled tubing four-flashboard blowout preventer comprises a hydraulic power device, a ratchet thrust stick and a ratchet cutter device. The hydraulic power device is movably connected with the ratchet thrust stick. The hydraulic power device forms circular motion in a rotating mode by the ratchet thrust stick hitting against the ratchet cutter device and simultaneously, a positive-rotating downward-propelling body is drivento move down by the accelerated speed of impacting and a negative-rotating upward-propelling body is driven to move up and then a cutter squeezes and cuts coiled tubing in the horizontal direction. Annular cutting of the coiled tubing is realized finally and a round cutting section is formed. The circular shear device for the coiled tubing four-flashboard blowout preventer has the beneficial effects that the cutting section of the coiled tubing is of a circular structure in the narrow space of a shear ram by remoulding the shear ram of the coiled tubing four-flashboard blowout preventer, thedeformation condition of an existing notch is avoided, and therefore the resistance of mining liquid or gas is reduced and the oil recovery efficiency or gas production efficiency is improved during operation.

The invention belongs to the field of material preparation, and particularly relates to a preparation method of a multi-stage pore-size distribution material. The preparation method comprises the following steps: firstly, preparing functional fibers, wherein chemical groups are arranged on the surfaces of the functional fibers; then, homogenizing the functional fibers to obtain homogenized functional fibers; performing crosslinking treatment on the homogenized functional fibers to obtain the multi-stage pore-size distribution material. The multi-stage pore-size distribution material prepared in the invention has multi-stage pore-size distribution, good adsorption properties, good flexibility and processibility, simple processes, high universality and low equipment requirements, can be subjected to industrial production, and has broad application prospects in many fields.

The invention discloses a forced pressure-in-draw-out type turbogenerator ventilation cooling system with multi-wind path interleaving, which relates to the field of electric machinery. In order to solve the problem of high temperature of a stator iron core, a stator winding and a rotor iron core in an existing turbogenerator, a 'Y'-shaped stator internal air channel is formed in the stator iron core, a stator radial ventilation groove is reserved between the stator iron cores, the stator region is alternately divided into a stator hot air area and a stator cold air area along the axial direction, and the stator iron core is arranged in the stator base; the rotor area is alternately divided into a rotor hot air area and a rotor cold air area along the axial direction, the rotor hot air area and the rotor cold air area are connected through the axial ventilation holes of the rotor, a throw away type fan blade, a rotor first-stage pressurizing fan blade and a rotor second-stage pressurizing fan blade are arranged in the rotor hot air area, a rotor suction fan blade is arranged in the rotor cold air area. The turbine generator has the advantages that the cooling effect of the components of the turbogenerator is enhanced, the structure is simple, and the realization is convenient.

The invention discloses an industrial waste gas treatment device, which comprises an intake pipe, a washing bucket, a barrel wall, a top cover, a cavity, a first through hole, a motor, a rotating shaft and a first stirring rod. Connecting rods are respectively connected above two sides of the first stirring rod. A second stirring rod is fixedly connected above the connecting rod. A water pump is also connected above the top cover. A drain pipe and a liquid suction pipe are in through connection with the water pump. A filter cartridge is also connected between the liquid suction pipe and the water pump. The top of the filter cartridge is connected with a filter cartridge cover. The bottom of the liquid suction pipe extends into the washing bucket. A plurality of annular tubes arranged one above the other are connected below the drain pipe, and two adjacent annular tubes are communicated with each other through two connecting pipes. The diameters of the annular tubes are sequentially increased from top to bottom. The annular tubes are provided with a plurality of second through holes. The top of the top cover is connected to an exhaust funnel, inside which an exhaust fan is connected. The deficiencies in the prior art can be improved, and the device of the invention has a better exhaust gas washing effect.

The invention provides a moisture absorbing article, which is formed by a surface layer which can be penetrated by liquid, a bottom layer which cannot be penetrated by the liquid, and an absorption core between the surface layer and the bottom layer. The moisture absorbing article is provided with a slot, and is characterized in that high compression parts and low compression parts are arranged in the slot, wherein the high compression parts are of geometric figures in regular or irregular shapes, and the geometric figures are arranged in order along the slot; and the geometric figures of the high compression parts in the slot can be linear figures or non-linear figures, such as roundness, ellipse and key slot shapes. The average density of the slot is less than 0.7g/cm<3>; the density of the compression part in the slot is more than the average density of the slot; and density of the high compression part is more than that of the low compression part.