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81results about How to "Increase outflow" patented technology

Pulsatile blood pump

There is provided a pulsatile blood pump (10) for implantation into a patient. The pulsatile blood pump comprises a substantially tubular body (12) a flexible membrane (14) and a port (16). The substantially tubular body is for replacing a resected portion of a blood vessel of the patient. The substantially tubular body has first and second ends with a blood passageway extending therebetween for the passage of blood. The flexible membrane is attached to the tubular body so as to form a fluid chamber between the flexible membrane and an inner surface of the tubular body. The flexible membrane thereby separates the fluid chamber from the blood passageway. The tubular body comprises the port. The port is arranged to allow fluid to flow into and out of the fluid chamber such that the volume of the fluid chamber increases and the volume of the blood passageway decreases when fluid flows into the fluid chamber via the port, and such that the volume of the fluid chamber decreases and the volume of the blood passageway increases when fluid flows out of the fluid chamber via the port. The blood pump is thereby enabled to pump blood along the blood passageway.
Owner:NOTTINGHAM UNIV HOSPITALS NHS TRUST

Spinning assembly and spinning part

The invention discloses a spinning assembly and a spinning part. The spinning assembly is used for producing polyurethane fibers and comprises a metering device and the spinning part, wherein the metering device is provided with one inlet and a plurality of outlets, the inlet is connected with a filtering and pressure stabilizing device, the outlets are directly connected with the spinning part, the spinning part is a box body with a cavity, the box body is internally provided with holes of different numbers, the number of the holes corresponds to the number of the polyurethane fibers in each spinning station, a filter and a spinneret are arranged inside each hole, the outlets of the metering device are correspondingly connected onto the holes of the spinning part, and the centers of the outlets of the metering device and the centers of the holes of the spinning part are homocentric. According to the invention, the production quality of the polyurethane fibers can be increased, the production efficiency can be increased, and the spinning assembly and the spinning part are simple and rapid to install and maintain.
Owner:HANGZHOU BANGLIAN SPANDEX

Double-wall cooling structure having longitudinal corrugated impact hole plate for thrust-vectoring nozzle

In the invention, a longitudinal corrugated impact pore plate and a flat plate type air film plate are used to constitute a double-wall cooling structure. Impact holes and air film holes are distributed in a staggered manner respectively; impact holes are formed in wave troughs of the corrugated impact hole plate and air film holes in the air film hole plate directly face wave peaks of the corrugated impact hole plate; and each of the corrugated impact pore plate and the air film hole plate is a plurality of unit period structures in the axial direction. A relatively small impact distance is formed between the wave trough and the air film hole plate, so that the heat exchange by impact may be increased; a relatively larger space may be formed between the wave peak and the air film hole plate, full development of cool air flowing is facilitated, outflowing is facilitated, the flow resistance may be reduced, the utilization ratio of cold air is increased and the contradiction between themethod of impact distance reduction for heat exchange enhancement and the method of impact distance increase for flow resistance reduction is solved; and meanwhile, the air film plate is a flat plate, so that air film attachment is facilitated to form effective heat protection, heat stress is reduced and the problem of uneven heat stress of a corrugated heat shield is solved.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

Method for preparing crosslinking butadiene-acrylonitrile copolymer rubber

ActiveCN101423585AImprove processing performanceProduct shrinkage is smallAcrylonitrileMonomer
The invention relates to a method for preparing cross-linking type butadiene-acrylonitrile copolymerizing rubber, which is characterized in that a butadiene monomer and an acrylonitrile monomer are mixed; 0.05 to 3.0 portions of cross-linking agent based on the mass portion of the total monomers is added into the mixture by two times or more than two times; 0.8 to 5.0 portions of emulsifying agents of alkyl sulfates of C8 to C16 or alkylbenzene sulfonates, a molecular weight regulator, a persulfate initiator, an activating agent, desalted water and so on are added into the mixture to finish polyreaction at a temperature of between 10 and 50 DEG C; and the polyreaction is finished when the monomer conversion is between 90 and 97 percent. The method for preparing the cross-linking type butadiene-acrylonitrile copolymerizing rubber is adopted to obtain butadiene-acrylonitrile copolymerizing rubber with the structural gel content of between 30 and 90 percent. The processability of the obtained polymer is improved, and the shrinkability of products is small (the shrinkage ratio is below 30 percent).
Owner:PETROCHINA CO LTD

Water self-supplying agricultural greenhouse system

The invention belongs to the technical field of agricultural greenhouses, and specifically discloses a water self-supplying agricultural greenhouse system. The system includes an optical system disposed in the greenhouse, a water generating system disposed on one side of the optical system and a blower connected with the water generating system, wherein the optical system includes a Fresnel lens,a first concave lens disposed at the condensing point of the Fresnel lens and solar limited-frequency reflecting glass disposed under the first concave lens, and the water generating system comprisesan insulating layer, a selective absorbing coating and a moisture adsorbing layer; the moisture adsorbing layer includes a adsorbent material layer and a metal thermally conductive rod, and the insulating layer is transmissive to infrared light reflected by the solar limited-frequency reflecting glass. Through the system, gradient utilization of sunlight is realized, cleanness and environmental protection can be achieved, consumption of non-renewable energy is reduced, and meanwhile the water self-supplying function of the greenhouse can be achieved; in a water-deficient area, not only agricultural water can be provided, but also supplementing of domestic water can be achieved, so that the problem of water shortage is alleviated.
Owner:HUAZHONG UNIV OF SCI & TECH

Multi-layer water heating device

ActiveCN104913491AMeet the needs of large drinking volumeIncrease outflowWater heatersWater sourceWater storage tank
The invention discloses a multi-layer water heating device, which comprises a water outlet pipeline, a bottom layer water boiling tank, a middle water transfer tank and a high layer water storage tank, wherein the middle water transfer tank is respectively provided with a water supply mouth and a water outlet mouth; the water supply mouth is located above the water outlet mouth; the water supply mouth is connected to the high layer water storage tank; the water outlet mouth is connected to the bottom layer water boiling tank; and one end of the water outlet pipeline is set on the bottom layer water boiling tank and extends to an inner cavity bottom wall next to the bottom layer water boiling tank, and the other end thereof extends outside the water boiling tank. According to the invention, three-layer structure from up to down is utilized; water in the high layer water storage tank at the upper most layer flows again into the bottom layer water storage tank through the middle water transfer tank and the water is heated; water flows freely from up to down, so complex structures like a water pump and water balance tank are avoided; the whole structure of the product is simpler and reasonable; further, boiled water in the bottom layer water boiling tank is discharged from the water outlet pipeline for drinking; the water is supplied to the water boiling tank by the middle water transfer tank; after the water inside the water boiling tank is boiled, the water is discharged from the water outlet pipeline, thus the hot water output volume is ensured to be large enough; and the requirement of large amount drinking is satisfied.
Owner:FOSHAN FOUR SEASONS TEA SET CO LTD

Low-pressure pipeline water-delivering irrigation water outlet

The invention provides a Low-pressure pipeline water-delivering irrigation water outlet. The Low-pressure pipeline water-delivering irrigation water outlet comprises a lower-part base, an upper-part tank and a draining water stilling pool, wherein a vertical pipe is contained in the center of the lower base and is provided with the upper-part tank; a base-plate water inlet communicated with the vertical pipe is arranged at the bottom of the upper-part tank; two hinged supporting bases which are fixed by a fastening bolt are arranged on a bottom wall of the upper-part tank on one side of the base-plate water inlet; a turning cover plate covering the base-plate water inlet is connected with the hinged supporting bases; a circle of water-stopping rubber sheet is stuck to an upstream side of the turning cover plate; a manual screw-rod opening-closing device is mounted on a top surface of the upper-part tank and is connected with the turning cover plate through a hinge connecting rod; a water outlet is arranged on a side wall of the upper-part tank; and the draining water stilling pool with flow-measuring scales is mounted on one side of the water outlet, adjacent to the lower-part base. The low-pressure pipeline water-delivering irrigation water outlet can meet the mass flow requirements, and is low in interior water head loss, and is capable of dissipating energy, preventing erosion, quantitatively controlling the flow of drained water and promoting the uniformity of irrigation water.
Owner:YANGZHOU UNIV
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