10results about How to "Uniform wind speed" patented technology

This invention belongs to the field of spinning technology and relates to a coarse denier, low-pore polyester medium-oriented yarn and its production method. The production method involves extruding the melt from the spinneret's orifices, then sequentially passing through a windless zone, a transition zone, and a side-blown cooling zone. The windless zone and transition zone are the upper and lower sections of the same cylindrical component, respectively. Different spinnerets correspond to different cylindrical components, and the cylindrical components do not directly contact the spinnerets. The upper section of the cylindrical component has no through holes in its wall; the lower section has through holes on its wall to guide ambient air into the interior of the cylindrical component and prevent turbulence inside. The length of the windless zone is 5-6 cm, and the length of the transition zone is 6-10 cm. The percentage difference in wind speed between the side-blown cooling zones is no higher than 10%, where the percentage difference is calculated as (maximum wind speed - minimum wind speed) / maximum wind speed × 100%. This production method achieves uniform cooling of the inner and outer layers, resulting in coarse denier, low-pore polyester medium-oriented yarn with advantages such as high breaking elongation.

The utility model provides an automobile air conditioner outlet pipe which comprises an air conditioner outlet pipe body, and the two ends of the air conditioner outlet pipe body are detachably connected with a first filtering assembly and a second filtering assembly respectively. The first filtering assembly comprises a mounting cylinder and a connecting cylinder, the mounting cylinder and the connecting cylinder are slidably arranged at one end of the air conditioner outlet pipe body, one end of the connecting cylinder is fixedly connected with one end of the mounting cylinder, filtering pieces are arranged at the ends, away from each other, of the mounting cylinder and the connecting cylinder, and two spiral grooves formed in the same direction are formed in the inner wall of the connecting cylinder. According to the automobile air conditioner outlet pipe, a double-layer filtering detachable structure is adopted, airflow can be guided to rotate and flow in the axial direction, the radial speed component is reduced, vortex formation is restrained, the air speed of an air outlet is more uniform, energy consumption is reduced, a turbulent noise source can be eliminated when vortex formation is restrained, and noise of the air outlet of an air conditioner in an automobile is lowered.

The present application relates to the technical field of air purifiers, and specifically provides a wind channel assembly, an air purifier and a wind channel assembly control method.The wind channel assembly comprises a centrifugal fan, a first shell and a flow guide piece;the centrifugal fan is provided in multiple parallel and sequential intervals;the first shell is arranged outside the centrifugal fan and is connected to the centrifugal fan;the first shell is provided with multiple wind channels corresponding to the centrifugal fan in one-to-one correspondence;the wind channel comprises a first air inlet and multiple first air outlets;the first air inlet is used for introducing airflow filtered by a target filter with a target resistance into the wind channel;the multiple first air outlets are arranged on the outer periphery of the centrifugal fan;the flow guide piece is arranged in the first shell and is connected to the first shell;the flow guide piece is arranged between two adjacent centrifugal fans to separate the wind channels;the flow guide piece is provided with flow guide concave arc surfaces on both sides, and the flow guide concave arc surfaces are configured to guide the airflow of a target fan to the first air outlet. The present application can provide large airflow while taking into account low noise and energy consumption.

The utility model discloses a negative pressure dust suction device for the surface of a pole piece, which comprises a dust removal cylinder body, a dust suction port is arranged on one side of the dust removal cylinder body close to the pole piece, and a rotatable brush is arranged in the dust removal cylinder body; the negative pressure cavity is arranged below the dust removal barrel and is communicated with the dust removal barrel; a main exhaust inlet is formed in one end of the negative pressure cavity; the negative pressure cavity is of a reducing structure, and the farther the negative pressure cavity is away from the main exhaust inlet, the smaller the section of the cavity is. The negative pressure cavity is of a reducing structure, the farther the negative pressure cavity is away from the air suction opening, the smaller the section of the cavity is, and the air speed of the whole cavity is uniform. The auxiliary air suction opening is additionally arranged on the lower portion of the negative pressure cavity, when the negative pressure cavity is too long, the air speed of the end, away from the main air suction opening, of the negative pressure cavity can be increased, the auxiliary air suction opening inclines towards the main air suction opening, and energy loss caused by mutual interference of suction force generated by the main air suction opening and the negative air suction opening is avoided as much as possible.

The invention discloses an ultrahigh material layer production device and method based on sintering unequal-thickness bedding. The ultrahigh material layer production device comprises a first sintering bedding bin, a second sintering bedding bin, a material distributing hopper, a sintering trolley and a material pressing assembly, and multiple sets of bar screens are arranged below the first sintering bedding bin at equal intervals; the distributing hopper is arranged below a blanking point of the first sintering grate-layer bin, the interior of the first sintering grate-layer bin is communicated with the second sintering grate-layer bin through a chute, the distributing hopper and the second sintering grate-layer bin are longitudinally distributed in the running direction of the sintering trolley, and the second sintering grate-layer bin is correspondingly arranged above the middle of the trolley. The material distributing hopper is arranged above the second sintering grate-layer bin in the longitudinal direction, two sets of discharging pipes are arranged at the bottom of the material distributing hopper, and the material pressing assembly is arranged in the sintering trolley before entering the ignition furnace and comprises a material scraping plate, a first material pressing plate and a second material pressing plate which are sequentially arranged. The method has the advantage that the ultra-thick material layer can be sintered in 330m < 2 >.

The invention relates to the technical field of drying structures, and discloses an efficient circuit ink drying device which comprises a drying oven and a placing mechanism, multiple sets of sliding rods are arranged on the two sides in the drying oven, sliding grooves are formed in the sliding rods, the placing mechanism comprises a supporting plate and a sliding plate, the supporting plate comprises multiple limiting parts and multiple object placing parts, and the limiting parts and the object placing parts are arranged at intervals. A ventilation opening is formed in the storage part, a moving channel is arranged in the limiting part and connected with the ventilation opening, a moving opening is formed in one side of the supporting plate and communicated with the ventilation opening and the moving channel, the sliding plate is arranged in the moving channel and penetrates out of the moving opening, and the caliber of the ventilation opening is increased or decreased by moving the sliding plate between the moving channel and the ventilation opening. By arranging the placing mechanism, the upper surface and the lower surface of the circuit board can be heated, and the uniform drying effect is improved; and through the arrangement of the air uniformizing mechanism, the air speed can be more uniform, the situation that hot air directly blows the local part to cause non-uniform drying of printing ink is reduced, and the quality of the circuit board is improved.

This invention discloses an immersion and purging device for zeolite modules, comprising an immersion tank and a blower mechanism. The immersion tank contains an immersion solution for immersing the zeolite modules, and a placement rack is provided on the immersion tank for placing the zeolite modules to be purged. An air outlet hood is provided at the air outlet end of the blower mechanism, correspondingly covering the placement rack and abutting the zeolite modules on the placement rack, allowing the air from the blower mechanism to completely penetrate the inner structure of the zeolite modules. Multiple immersion tanks are arranged in a row, and the placement rack is mounted on a movable support, which can move the placement rack to each immersion tank. The air outlet hood is separately connected to the blower mechanism and is rotatably mounted on the movable support. When the air outlet hood is flipped up, it exposes the placement rack; when the air outlet hood is flipped down, it abuts the zeolite modules on the placement rack. This invention enables the air from the blower mechanism to completely act on the zeolite modules to be purged, reducing the purging time.

This invention belongs to the technical field of thin film drying equipment, and relates to a thin film drying device and method. The thin film drying device includes a substrate conveying assembly and an air-knife film drying assembly. The substrate conveying assembly conveys the substrate, and the air-knife film drying assembly dries the wet film on the substrate surface. The air-knife film drying assembly includes an inlet / outlet section, a control section, an air outlet section, an air velocity sensing system, and an air velocity control system. The control section has a control duct and multiple control components. Each control component includes an air valve and a drive component. The air valve is disposed within the control duct, and the drive component controls the rotation of the air valve to adjust the airflow angle and air velocity at the inlet / outlet. The air velocity sensing system and the air velocity control system are interconnected to monitor the air velocity at the air outlet. The air velocity control system controls the control components based on the monitoring signal from the air velocity sensing system to adjust the rotation angle of the air valve within the control duct. This invention reduces the impact of airflow on wet film formation, reduces film formation defects, and improves film quality.

The invention relates to a fender maintenance cover and a motorcycle, the fender maintenance cover comprises a top edge, a bottom edge, a first side edge and a second side edge, and the top edge, the first side edge, the bottom edge and the second side edge jointly define an air inlet; the air inlet comprises a middle air inlet area, a first side air inlet area, a second side air inlet area and a bottom air inlet area; first grid strips are arranged in the middle air inlet area and extend in the horizontal direction; the first side air inlet area is provided with a second grating strip, and the second grating strip is parallel to the second side edge; the second side air inlet area is provided with a third grating strip, and the third grating strip is parallel to the second side edge; the bottom air inlet area is provided with fourth grid strips, and the fourth grid strips are obliquely arranged in the direction from the air inlet side to the air outlet side of the fender maintenance cover and gradually close to the bottom edge. The fender maintenance cover can improve the air inlet amount and the air inlet uniformity of the radiator.

The utility model belongs to the technical field of natural gas heating furnace waste heat utilization, and particularly relates to a natural gas heating furnace waste heat recycling device which comprises a natural gas heating furnace body, a furnace body waste heat recycling assembly is arranged on the outer wall of the natural gas heating furnace body, and a smoke direction adjusting assembly is installed at the top of the natural gas heating furnace body. A heating furnace smoke recycling assembly is arranged at the end of the smoke direction adjusting assembly, and the furnace body waste heat recycling assembly comprises a water inlet pipeline, a water inlet valve, a water flow circulation pipeline, a water pipe outer wall, a heat insulation layer, a heating layer, a water outlet pipeline and a water outlet valve. The end part of the water inlet pipeline is communicated with a water flow circulation pipeline; the waste heat recycling device can recycle heat on the outer wall of the natural gas heating furnace and heat in exhausted smoke at the same time, and the utilization efficiency of waste heat of the natural gas heating furnace can be improved conveniently.