16results about How to "Reduce vortex" patented technology

The invention provides an up-down air outlet air conditioner and a control method thereof. The up-down air outlet air conditioner comprises a shell, a first air inlet, a first air outlet, a second air inlet and a second air outlet. The indoor heat exchanger is arranged in the shell and divides the space in the shell into an upper space and a lower space; the first air duct is arranged in the upper space and communicates with the second upper air opening; the second air duct is arranged in the lower space and communicates with the first lower air opening; the first cross-flow fan blade is arranged in the first air duct; the second cross-flow fan blade is arranged in the second air duct; the first upper air opening and the first air channel can communicate with the second air channel, and the second air channel and the second lower air opening can communicate with the first air channel. According to the up-and-down air outlet air conditioner and the control method thereof, the requirements that cold air is not directly blown during refrigeration and hot air falls to the ground quickly during heating can be met, and too large noise cannot be generated.

The invention discloses a vertical axis wind turbine driving device with a wind deflector, and relates to the field of mechanical engineering, the driving device comprises a long shaft, a plurality of blades and a bearing assembly; the long shaft and all the blades form a wind wheel for driving the generator set to generate electricity; the wind deflector assembly is arranged on one side of the wind wheel; when the wind wheel rotates under wind power, the wind deflector assembly guides wind below the wind wheel to the upper portion of the wind wheel to form resultant force with wind acting on the upper portion of the wind wheel, driving torque generated by the wind wheel is enhanced, and the generator set is driven to generate power. The vertical-axis wind driven generator is very convenient to install and transport, the power generation efficiency of the vertical-axis wind driven generator is effectively improved, the blades are not prone to breakage and deformation, and meanwhile noise during working is effectively reduced. Therefore, compared with a traditional vertical axis wind driven generator driving device, the vertical axis wind driven generator driving device is more suitable for being popularized and applied in cities or areas with limited space, especially areas with rich wind energy.

The invention discloses a bulk cargo ship cargo hold cover and a bulk cargo ship, the bulk cargo ship cargo hold cover comprises a hatch cover and a hatch coaming, the hatch cover is arranged above an exposed deck, and the hatch coaming is embedded in the exposed deck; a first pressing strip is arranged on the exposed deck, and a first sealing part is arranged at the bottom of the hatch cover; a second pressing strip is arranged on the hatch coaming panel, and a second sealing part is arranged at the bottom of the hatch cover; a hatch cover skirt plate is fixedly arranged at the bottom of the hatch cover and arranged between the first sealing component and the second sealing component. And an inflatable pressing part is arranged on the hatch coaming vertical plate. The cargo hold cover of the bulk cargo ship has the advantage of multi-point watertight protection.

The application provides a liquid outlet device and a liquid cooling tank. The liquid outlet device comprises a cavity. The cavity is arranged in the liquid cooling tank and communicates with the inside of the liquid cooling tank. One side of the cavity is provided with an opening. A filter screen is arranged on the opening. A vortex prevention device is arranged in the cavity. A liquid inlet channel of the vortex prevention device communicates with the inside of the cavity. The liquid inlet channel extends along the radial direction of the vortex prevention device to a liquid outlet channel of the vortex prevention device and communicates with the liquid outlet channel. The liquid outlet channel of the vortex prevention device extends out of the cavity. In the case that the liquid coolant in the inside of the liquid cooling tank overflows into the inside of the cavity through the filter screen, the liquid coolant in the inside of the cavity flows out of the cavity through the vortex prevention device. The application improves or solves the problem of reduced heat dissipation efficiency caused by the liquid outlet device of the liquid cooling tank mixing a large amount of air bubbles into the main pipeline, and improves the heat dissipation efficiency.

The present invention relates to a centrifugal impeller, a fan and a cleaning machine with the fan, wherein the centrifugal impeller comprises a chassis; a cover plate arranged opposite to the chassis, the cover plate having an air inlet at a position adjacent to the center; a plurality of air guide blades arranged between the chassis and the cover plate at intervals along the circumferential direction and located at the periphery of the air inlet, an air guide channel is formed between two adjacent air guide blades, and the air guide channel is located downstream of the air inlet along the fluid flow path; the characteristic is that the outer peripheral edge of the chassis comprises at least two straight sections arranged at intervals along the circumferential direction, the two adjacent straight sections are connected by an arc section, and the arc section is bent in a direction away from the air inlet; or the outer peripheral edge of the chassis is a polygon with at least three straight sections. The airflow entering through the air inlet can decompose the noise peak after passing through the outer peripheral edge of the chassis, reduce the vortex, and make the non-steady-state vortex of the high-frequency noise peak gradually fall off, thereby suppressing the high-frequency noise.

The present invention relates to an integral high-pressure and ultra-large flow hydraulic distributing valve, comprising a valve body, wherein a stepped groove is provided in the valve body, which is located at the same hole center and has a decreasing aperture from top to bottom, the bottom of the stepped groove is connected to the liquid inlet through hole, and the suction valve seat, suction valve core, extrusion valve seat, extrusion valve core and extrusion valve stopper that contact and cooperate with each other are arranged in sequence upward along the bottom of the stepped groove, and the extrusion valve stopper is connected to the liquid discharge through hole. The present invention has a compact and reasonable structure and is easy to operate. By adopting a flat valve structure, the lower part of the suction valve core has a parabolic structure, which is conducive to reducing valve port cavitation. The suction valve and the extrusion valve are both designed with a low-friction anti-rotation structure, which solves the problem of the valve core rotating when impacted by high-speed uneven fluid; the extrusion valve seat is provided with an oblique counter-impact structure, and the impact energy of the fluid is dissipated through the oblique counter-impact structure, thereby reducing the impact of the fluid on the valve core and enhancing the operating stability of the distributing valve.

The utility model discloses a rotation stopping device for a suction inlet of a water pump, and belongs to the field of water supply systems of pipeline pump sets. The rotation stopping device comprises an installation bottom plate welded to the position, corresponding to a water pump suction inlet, in the expansion water tank, and a through hole formed in the installation bottom plate and communicated with the water pump suction inlet. The eight flow guide plates are distributed on the side, away from the water pump suction inlet, of the mounting bottom plate in an annular array mode and welded to the mounting bottom plate, and the top anti-rotation plates are welded to the sides, away from the mounting bottom plate, of the eight flow guide plates. And the guide plate is a V-shaped metal plate bending piece. According to the rotation stopping device, the liquid level of a water pump inlet is lowered by arranging the mounting bottom plate, the through hole, the eight flow guide plates and the top rotation preventing plate, an original water pump suction inlet is divided into eight water inlet channels, liquid can be dispersed into the water pump more evenly, the overall suction force and the flow speed of the water pump suction inlet are effectively reduced, and the water pump efficiency is improved. Therefore, vortexes and bubbles generated due to too high flow speed can be reduced, and the operation stability of the water pump is improved.

The utility model provides a filter element structure for filtering a fluid medium, the filter element structure is used for being arranged in a cavity of a base, and the base is provided with a liquid inlet pipe and a liquid outlet pipe which are communicated with the cavity; the filter element structure comprises a binding face used for being attached to the inner wall of a base, and a liquid inlet is formed in the binding face and used for being communicated with a liquid inlet pipe. A filtering surface is arranged on the edge of the binding surface, and the filtering surface and the binding surface are enclosed to form a column body; the filtering surface is used for filtering a fluid medium, and a gap is reserved between the filtering surface and the inner wall of the base; a bottom surface is arranged at the bottom of the column body, and the bottom surface and the column body enclose to form a filter cartridge; the top of the filter cartridge is used for being connected with a base. The binding surface is attached to the inner wall of the base, so that the liquid inlet is communicated with the liquid inlet pipe, and the binding surface disperses a fluid medium and then filters the fluid medium, so that the risk of local blockage is reduced; and a gap is reserved between the filtering surface and the inner wall of the base to form a filtering space, so that particles can be intercepted, particle retention can be reduced, and the possibility of blockage of the filter element is further reduced.

The invention provides a hyperbaric oxygen chamber oxygen inhalation mask for a patient with an indwelling stomach tube, and belongs to the technical field of medical instruments. Comprising an oxygen inhalation mask, a sputum suction mechanism is arranged on the inner side of the oxygen inhalation mask and used for sucking and removing sputum on the inner side of the nasal cavity of a stomach tube patient, the sputum suction mechanism comprises a second rubber hose fixedly connected to the inner side of the oxygen inhalation mask, and one end of the second rubber hose is fixedly connected with a corrugated hose; one end of the corrugated hose is fixedly connected with a first rubber hose; the stomach tube is arranged on the inner side of the second rubber hose and penetrates through the inner side of the first rubber hose, and sealing rubber used for sealing the first rubber hose and the stomach tube is arranged at the contact position of the inner side of the first rubber hose and the stomach tube. Through mutual cooperation of the sputum suction mechanism and the sputum removal mechanism, sputum in the nasal cavity can be sucked into the inner side of the corrugated hose through the Z-shaped through hole, and the effect of cleaning the nasal cavity of a patient is achieved.

The utility model provides a submersible axial mixed-flow pump and shaft installation structure for reducing vortex, which comprises a precast concrete shaft, a middle flow channel and a water inlet flow channel, an embedded base is installed at the lower part of the precast concrete shaft, an axial mixed-flow pump is installed at the inner side of the embedded base, the lower end of the precast concrete shaft is communicated with the upper end of the middle flow channel, and the lower end of the middle flow channel is communicated with the water inlet flow channel. The lower end of the middle flow channel is communicated with the upper end of the water inlet flow channel, the inner diameter of the upper end of the middle flow channel is smaller than the outer diameter of an impeller shell of the axial mixed flow pump, a plurality of rib plates are arranged on the inner wall of the embedded base in a vertical extending mode and protrude inwards in the radial direction, and gaps exist between the rib plates and the impeller shell. The rubber pad separates the bottom end of the precast concrete shaft from the middle flow channel; according to the utility model, a plurality of rib plates are additionally arranged on the pre-embedded base, so that possible vortexes are damaged, and the vortexes are reduced; rubber pads are additionally arranged at the bottom of the shaft to cut off connection between the flow channel and the shaft, and therefore the purpose of reducing vortexes is achieved.

The invention relates to the technical field of mixed-flow pumps, and particularly discloses a vertical two-way mixed-flow pump flow guide device which comprises a mixed-flow pump body, a water outlet flow guide device is arranged above the mixed-flow pump body, a water inlet flow guide device is arranged below the mixed-flow pump body, and the water inlet flow guide device comprises a flow guide cone. A cover plate is arranged on the upper side of the flow guide cone, a plurality of reserved holes are evenly formed in the circumferential side of the flow guide cone, and a water inlet horn corresponding to the water inlet flow guide device is arranged on the lower portion of the mixed-flow pump body. Water flow is optimized through the box culvert type water inlet flow channel and the water inlet flow guiding device, it is ensured that the two-way water inlet flow state is uniform and smooth, bad flow states are reduced, the operation stability of the mixed-flow pump is improved, kinetic energy loss is reduced through the two-way elbow water outlet flow guiding device, a diffusion pipe is prolonged, the water outlet effect and efficiency are improved, meanwhile turbulent flow and vibration are avoided, and the flow guiding device is simple in structure and low in cost. The construction difficulty is low, installation and maintenance are convenient, and the overall construction and production cost is reduced.

This utility model relates to the field of air compressors, and more particularly to an air compressor for glass manufacturing. It includes an air compressor housing, a first air inlet plate rotatably connected to the left side of the housing, a guide frame on the first air inlet plate, a radiator in the middle of the housing, a heat dissipation vent on the upper right side of the housing, a cooling fan mounted on the vent, a heat dissipation frame mounted on the upper right side of the housing, and a second air inlet plate rotatably connected to the right side of the housing. This utility model precisely guides airflow through the dual-guided first and second air inlet plates, significantly reducing inlet turbulence losses and minimizing vortices. The converging heat dissipation frame accelerates exhaust through the Venturi effect, enhances the suction force of the cooling fan, significantly improves heat exchange efficiency, solves the problem of high-temperature compressed air retention, and reduces equipment heat load and operating energy consumption.

The utility model discloses a liftable anti-vortex stirring kettle for a laboratory, which comprises a base, a turnover stirring kettle is mounted on the base through a support, a limiting component is arranged on one side of the stirring kettle, a liftable stirrer is erected in the stirring kettle, the stirrer comprises a stirring shaft, and the stirring shaft is provided with an anti-vortex device. Stirring blades with adjustable stirring radiuses are distributed on the two sides of the stirring shaft, spoilers are distributed on the inner walls of the two sides of the stirring kettle, the spoilers on the two sides are oppositely arranged in a staggered mode, and the stirring blades are located between the vertically adjacent spoilers on the corresponding sides respectively; the lifting of the stirrer is driven by a lifting guide assembly of which one side can be accurately positioned. The liftable anti-vortex efficient stirring kettle adopts the lifting type stirring motor, the fan-shaped stirrer and the irregular choked flow baffle, effectively prevents vortex formation, improves efficiency and stirring quality, and is simple in structure, stable in operation, uniform in stirring, high in efficiency, low in cost and convenient for pouring out finished products.

The utility model discloses an air outlet structure of a dedusting cover at a steel ladle pouring station, which relates to the technical field of dedusting of metallurgical equipment and comprises an air guide pipe laid along the surface of the dedusting cover, one end of the air guide pipe is connected with an air outlet body, and the other end of the air guide pipe extends above a crystallizer and is used for directionally guiding airflow; the air outlet body is connected with the air guide pipe, the section of the air outlet body is of a wedge-shaped structure, and the area of the section is gradually increased from the end connected with the air guide pipe to the far end so as to enhance the air gathering effect and enlarge the smoke dust gathering range; the reinforcing triangular body is arranged at the bottom of the air outlet body, and the two sides are fixedly connected with the side wall of the dust hood to form an integral rigid supporting structure. The air duct structure is optimized through the air outlet body of the wedge-shaped structure, airflow vortex can be reduced, and compared with an original dust hood air outlet, the air gathering effect is enhanced, so that the effective smoke dust gathering range is enlarged, and dust can be effectively prevented from overflowing.

The invention relates to a low-gas-content copper-aluminum composite casting system which comprises a copper melting furnace, a copper heat preservation furnace, a deoxidizing device, a copper-aluminum composite furnace, an aluminum melting furnace, an aluminum heat preservation furnace and a hydrogen removing device. The deoxidizing device is used for blowing inert gas into copper liquid of the copper heat preservation furnace, and the copper heat preservation furnace is communicated with the copper-aluminum composite furnace through a channel. The aluminum melting furnace is communicated with the aluminum heat preservation furnace, the dehydrogenation device is arranged in the aluminum heat preservation furnace and used for blowing inert gas into molten aluminum of the aluminum heat preservation furnace, and the aluminum heat preservation furnace is communicated with the copper-aluminum composite furnace through a second conveying channel. The inert gas is introduced into the copper liquid and the aluminum liquid respectively, the inert gas enables the copper liquid and the aluminum liquid to roll over, the deoxidizing and dehydrogenating effects are achieved, the purity of the copper liquid and the aluminum liquid is improved, the casting quality is improved, and continuous and large-scale production of the copper-aluminum compound system is achieved.

The invention discloses a formed foil test liquid pre-preparation device and method, and relates to the technical field of material science and chemical engineering, the formed foil test liquid pre-preparation device comprises a base, the inner wall of the base is fixedly provided with a tank body, the bottom of the tank body is provided with a water outlet, the circumferential surface of the water outlet is provided with an electromagnetic valve, and a pre-preparation detection device is arranged above the tank body. A stirring device is arranged in the tank body, and a warning device is arranged below the tank body; through the arrangement of a pre-assembled detection device, a sliding rod moves to drive a trigger block to move to be matched with a touch block, a first spring, a first butt joint groove and a butt joint groove so that liquid in the storage tank can flow out of the storage tank and is conveyed into the tank body through a pipeline, the flow of various kinds of liquid is controlled, and raw material waste can be reduced; each raw material can be fully utilized, and the loss caused by excessive or non-uniform mixing is reduced.