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284results about How to "Speed up the flow" patented technology

Polishing equipment suitable for steel pipes of different pipe diameters

The invention belongs to the technical field of steel pipe polishing equipment, and particularly relates to polishing equipment suitable for steel pipes of different pipe diameters. The polishing equipment comprises a rack, an outer cylinder, an inner cylinder and a pipe body, wherein the inner side of the rack is fixedly connected to the outer cylinder; through holes are formed in the top and bottom of the rack; the top end of the outer cylinder is fixedly connected to the inner cylinder; the outer cylinder is used for storing gravels; a polishing module is arranged at the bottom of the outercylinder and comprises a polishing ring No. 1, a polishing ring No. 2, a polishing ring No. 3, a polishing ring No. 4, a curved gear No. 1 and a curved gear No. 2; the polishing ring No. 1, the polishing ring No. 2, the polishing ring No. 3 and the polishing ring No. 4 are arranged from top to bottom in sequence; the inner diameters of a through hole No. 1, a through hole No. 2, a through hole No. 3 and a through hole No. 4 are decreased in sequence; and the through hole No. 1, the through hole No. 2, the through hole No. 3 and the through hole No. 4 are used cooperatively for the fine polishing of pipe bodies of different pipe diameters. The polishing equipment can effectively improve the polishing quality of the pipe body and reduces the clearing workload of the later period.
Owner:张家港市银坤泰金属制品有限公司

Transparent polypropylene with high fluidity and high heat resistance and preparation method thereof

InactiveCN104788825ASpeed up the flowImprove rigidityHigh resistancePolypropylene composites
The invention provides transparent polypropylene with high fluidity and high heat resistance and a preparation method thereof. The transparent polypropylene comprises the following components in percentage by weight: 30-70% of random copolymerization polypropylene, 23-70% of homopolymerization polypropylene, 0-5% of ethylene-octylene copolymer, 0.1-2% of a nucleating agent, 0.1-2% of an additive and 0.1-2% of a processing agent. The transparent polypropylene compound material with high fluidity, high rigidity and high heat resistance, disclosed by the invention, utilizes the advantages of high rigidity and high heat resistance of homopolymerization polypropylene, and the heat resistant temperature and the rigidity of random copolymerization polypropylene are improved; through different fluid polypropylene compounding, a wide fluidity range is achieved, so that the transparent polypropylene can meet different customer requirements; a transparent toughening agent can be added, so that the purpose of improving the low-temperature toughness is achieved; through the compounding of homopolymerization polypropylene and random polypropylene, and the adding of the nucleating agent, the particle diameter of spherocrystal is shortened, the transparency is improved, the compatibility is good, no current ripple exists on the surface, and the lustrousness is high.
Owner:TIANJIN KINGFA NEW MATERIAL

Friction stir welding device and method by applying ultrasonic vibration from bottom

The invention discloses a friction stir welding device and a friction stir welding method by applying ultrasonic vibration from the bottom, and relates to a friction stir welding device and a friction stir welding method. According to the friction stir welding device and the friction stir welding method, ultrasound is applied to to-be-welded workpieces around a stirring pin from the bottom, and the metal deformation resistance is reduced by utilizing the ultrasonic vibration, so as to promote metal flow at the root of weld and reduce the tendency of weak connections, thereby achieving the purpose of increasing the welding quality. According to the device, a rectangular groove is processed in a workbench along a welding direction, a support base is arranged in the rectangular groove, a circular through hole is processed in the center of the support base, and in a welding process, axial pressure is mainly born by the support base; an ultrasonic vibration device is fixed below the workbench, and in the welding process, ultrasonic vibration energy is vertically applied to the to-be-welded workpieces around the stirring pin from the bottom by the ultrasonic vibration device. The method comprises the steps of (1) fixing the support base; (2) fixing the ultrasonic vibration device; (3) performing friction stir welding. The device and the method are used in the field of welding.
Owner:HARBIN INST OF TECH

Blood flow guide device of centrifugal magnetic suspension artificial heart pump

ActiveCN104826183ASpeed up the flowEliminate the stagnation zone in the low-velocity zone of bloodIntravenous devicesBlood pumpBiomedical engineeringLow speed
The invention discloses a blood flow guide device of a centrifugal magnetic suspension artificial heart pump. The blood flow guide device of the centrifugal magnetic suspension artificial heart pump comprises an outer shell, a rotor thrust disc and a guide wire. A stand column is fixed to the middle of the outer shell, the rotor thrust disc rotates around the stand column, a gap exists between the rotor thrust disc and the outer shell, the upper end of the outer shell is provided with a blood inlet, the lower end of the outer shell is provided with a blood outlet, and the rotor thrust disc is provided with the guide wire. When the rotor thrust disc rotates, blood is sucked from the inlet, one part of the blood reaches the blood outlet along a seam between the outer side of the rotor thrust disc and the outer shell and then flows out from the outlet, and the outer part of the blood flows back from bottom to top from a seam between the inner side of the rotor thrust disc and the stand column and then converges with the inflow blood at the inlet. The blood flow guide device of the centrifugal magnetic suspension artificial heart pump can guide and accelerate radial blood flow speed at the axle end in order to eliminate a blood low-speed area stagnation area at the axle end of a pump body, then avoid thrombosing, and accelerate the actual application progress of the artificial heart pump.
Owner:SHANDONG UNIV

Turbulent-flow crushing machine of soybean milk maker

The invention discloses a turbulent-flow crushing machine of a soybean milk maker, which comprises a machine head, a motor arranged in the machine head, a curved-surface body turbulent-flow component and a crushing and pulping tool connected with the motor through a shaft and is characterized in that: the turbulent-flow component is directly or indirectly mounted on the machine head; the turbulent-flow component is an integrated turbulent-flow cover or a turbulent-flow cover-like body consisting a plurality of turbulent-flow plates; a space for accommodating the shaft passing through is preserved in the center of the turbulent-flow component; and the lower end face of the crushing and pulping tool is not lower than the lower end face of the turbulent-flow component. In the invention, by arranging the curved-surface body turbulent-flow component and mounting the crushing and pulping tool at a position on the same height as or on a lower height than the lower end face of the turbulent-flow component, the problem that turbulent and crushing actions are independent of each other and cannot promote each other in the prior art is solved. The design allows a high negative pressure is formed on the periphery of the crushing and pulping tool, so the flowing of the pulp is accelerated; therefore, the crushing effect is improved, crushing time is reduced and a good defoaming effect is achieved.
Owner:MIDEA GRP CO LTD

Flow passage of helical-tooth drip irrigation emitter

ActiveCN101722118AReduce stagnation zoneSpeed up the flowSpray nozzlesPower performanceEngineering
The invention relates to a flow passage of a helical-tooth drip irrigation emitter. An upper boundary, a lower boundary and a flow passage depth form a groove-shaped flow passage. The flow passage is characterized in that: raised flow passage teeth are arranged in the groove-shaped flow passage; dedendums of the flow passage teeth and the upper boundary or the lower boundary form circular arc chamfers, and flow passage units consist of the boundaries, the circular arc chamfers, the flow passage teeth and the circular arc chamfers; and the flow passage teeth in upper and lower flow passage units are arranged in a staggered mode, and a plurality of the same flow passage units are connected end to end sequentially to form an integral flow passage. A flow passage structure enables water flow in the flow passage to generate stronger turbulence effect under certain pressure, so that the hydraulic power performance of the emitter can be improved, and the blocking resistance of the emitter can be strengthened. The flow passage structure adopts a staggered helical-tooth shape, and angles of inclination of the flow passage teeth can be changed from 0 degree, and can incline towards two sides of a direction of a center line vertical to the flow passage to form different upstream faces and downstream faces of the flow passage, so that the hydraulic power performance of the emitter is changed and the blocking resistance of the emitter is improved.
Owner:HOHAI UNIV

Pyrolysis device and method for carbonaceous substance

The invention discloses a pyrolysis device and method for a carbonaceous substance. The pyrolysis device for the carbonaceous substance comprises a furnace body, an upper heat radiation pipe, a lower heat radiation pipe, a solid partition plate and a porous partition plate, wherein a hearth is provided with a pyrolysis gas inlet and a pyrolysis gas outlet; the solid partition plate is arranged between the upper heat radiation pipe and the lower heat radiation pipe and is adjacent to the lower heat radiation pipe; the porous partition plate is arranged between the solid partition plate and the upper heat radiation pipe; the pyrolysis gas inlet is located between the solid partition plate and the porous partition plate, and the pyrolysis gas outlet is located between the upper heat radiation pipe and the porous partition plate. According to the pyrolysis device for the carbonaceous substance, disclosed by the invention, the hearth is internally provided with the solid partition plate and the porous partition plate which are good in heat transfer performance, so that the flowing speed of pyrolysis gas is increased, and the forced convective heat transfer of the pyrolysis gas in the hearth is realized, thus the heat transfer effect is enhanced, the secondary pyrolysis probability of the pyrolysis gas is reduced, and the tar yield is increased.
Owner:SHENWU TECH GRP CO LTD

Air guide device and air conditioner indoor unit with air guide device

The invention relates to an air guide device and an air conditioner indoor unit with the air guide device. The air guide device comprises an air guide plate, a plurality of first swing blades and a plurality of second swing blades; the first swing blades are arranged on the upper surface of the air guide plate at intervals in the length direction of the air guide plate, each first swing blade is rotatably mounted on the upper surface of the air guide plate, the second swing blades are arranged on the lower surface of the air guide plate at intervals in the length direction of the air guide plate, and each second swing blade is rotatably mounted on the lower surface of the air guide plate. The invention further provides the air conditioner indoor unit with the air guide device. Through the air guide device, the air guide plate and the swing blades on the two sides of the air guide device are integrated, and the vertical air direction and the left-and-right air direction can be adjusted through one part; when an air conditioner is subject to air outlet, outlet air can be blown to the different directions, the air outlet range can be expanded, during air outlet, air is not directly blown to a user, air flowing is more smooth, and the use experience of the user is improved.
Owner:QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD

Impeller-guiding speed-changing swirling-flow anti-wax device

ActiveCN107542429AIt has the effect of scouring the wall surface to wax and scaleSpeed up the flowCleaning apparatusImpellerWellhead
The invention relates to an impeller-guiding speed-changing swirling-flow anti-wax device. The impeller-guiding speed-changing swirling-flow anti-wax device comprises a motor, a belt pulley assembly and a hollow rod, wherein the motor is connected with the hollow rod through the belt pulley assembly, the hollow rod is hung at a well opening through an upper four-way assembly, and extends to an oilpipe downwards, a flange joint is installed at the upper end of the hollow rod, a one-way valve is installed at the lower end of the hollow rod, and guiding impellers are arranged at the portion, extending into the oil pipe, of the hollow rod and provided with blades; when the guiding impellers rotate along the hollow rod, the guiding impellers generate the pressurizing effect and the speed increasing effect on produced liquid, and liquid flow spirally flowing is formed; precipitated wax of the wall surface is washed out and scraped, the flowing speed of the liquid flow is increased, and waxcrystals are carried; the rotating speed of the motor is controlled by a frequency-modulation speed-changing driving control cabinet. The impeller-guiding speed-changing swirling-flow anti-wax devicehas the function of preventing the wax crystals while the precipitated wax and formed scales are cleaned, the anti-wax and wax-cleaning aims are achieved accordingly, and the current rod-free oil recovery wax precipitation problem is solved.
Owner:NORTHEAST GASOLINEEUM UNIV
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