7results about How to "Adjust aperture" patented technology

The application relates to a temperature-sensitive adjustable heat rectification porous material and a preparation method thereof, and belongs to the technical field of functional materials and thermal management materials. The temperature-sensitive adjustable heat rectification porous material comprises an asymmetric porous polymer skeleton and a temperature-sensitive polymer network embedded in the interior of the polymer skeleton, wherein the asymmetric porous polymer skeleton has a pore size difference in the thickness direction, one side of the asymmetric porous polymer skeleton is a small-pore structure, and the other side is a large-pore structure. The temperature-sensitive polymer network is introduced into the asymmetric porous polymer skeleton, so that the heat rectification is changed from a static behavior to a dynamic adjustable behavior. Under a low-temperature condition, the temperature-sensitive polymer absorbs water to expand, the pore size of the large-pore side is reduced, the pore size difference is reduced, and the heat rectification ratio is reduced; under a high-temperature condition, the temperature-sensitive polymer is dehydrated to shrink, the pore size of the large-pore side is increased, the pore size difference is increased, and the heat rectification ratio is increased. Through the mechanism, the heat rectification ratio can be adjusted and changed in the range of 25-40 DEG C, and the heat regulation capacity is remarkably improved.

The application discloses a preparation method of a magnetic oil-absorbing resin based on a high internal phase emulsion template. First, a certain amount of magnetic nanoparticles, an initiator and a surfactant are added into a solution containing monomers, a crosslinking agent and a pore-forming agent, and after being uniformly mixed, an oil phase is obtained; then, under mechanical stirring, a calcium chloride aqueous solution is slowly added into the oil phase to obtain a water-in-oil high internal phase emulsion; then, a polymerization reaction is carried out at 70 DEG C for about 24 hours; after being extracted by anhydrous ethanol by means of a Soxhlet extractor and vacuum dried, the magnetic oil-absorbing resin is obtained. By adjusting the content of the magnetic nanoparticles, the pore structure and oil-absorbing performance of the magnetic oil-absorbing resin are optimized, and a series of magnetic oil-absorbing resins are prepared, which exhibit good oil-absorbing performance, magnetic response and recycling performance.

The application relates to an anti-blocking hammer crusher bottom screen structure, and belongs to the technical field of hammer crushers, which comprises a first screen body and a second screen body installed inside a shell and located on both sides of a rotor shaft, a plurality of support plates are sequentially arranged between the first screen body and the second screen body along the length direction of the rotor shaft, the support plates are arranged along the height direction of the shell, a plurality of support rods are detachably connected to the upper side of the support plates and arranged along the length direction of the support plates and perpendicular to the support plates, and a cleaning door located at the end of the support rod is installed on both sides of the shell. The application has the effects of facilitating cleaning and reducing the adverse effect on work efficiency.

This utility model relates to solid-liquid separation equipment technology, and discloses a multi-stage pressurized filter cylinder structure for a vinegar residue extrusion dewatering machine. It includes a base plate, a support fixedly connected to the rear top of the base plate, a hydraulic assembly fixedly connected to the inner top wall of the support, a connecting base slidably connected to the center of the top of the base plate, a liquid collection tank fixedly connected to the top of the connecting base, a motor fixedly connected to a groove in the top of the connecting base, and a connecting shaft fixedly installed at the output end of the motor. In this utility model, the motor drives the connecting shaft to rotate, causing the connecting plate and adjusting components to rotate around the fixed filter cylinder. When the adjusting components rotate, they block the filter holes, allowing for rapid adjustment of the filter hole diameters of multiple filter cylinders according to different materials and processing levels. This ensures that different sized particles remain in the corresponding filter cylinders during the extrusion filtration of the vinegar residue, achieving precise filtration and solving the problem of not being able to quickly and accurately adjust the filter hole diameter for the dewatered material.

The utility model relates to egg sieving technical field, concretely relates to a kind of egg sieving device, including box, the inside assembly of box is equipped with adjusting device;The adjusting device includes fixed sieving plate, and the fixed sieving plate is fixedly connected in the inside wall front of box, and the back of box is slidably connected with mobile sieving plate, and the back of box is fixedly connected with vertical plate, and the vertical plate side is rotatably connected with lead screw by bearing, and the vertical plate side is fixedly connected with motor, and the floating lead screw is fixedly connected with motor output end in vertical plate and extends to left side, and extends end.The utility model adjusts the included angle of the through-hole of mobile sieving plate and the through-hole of fixed sieving plate, realizes the adjustment of aperture, simultaneously by the suction of permanent magnet, guide magnet drops, realize magnetic force connection, make egg receiving box to tilt discharge, to solve the size of the aperture of filtering egg when using cannot be adjusted, use very inconvenient problem.

The application discloses a polypropylene particle screening device, and relates to the technical field of particle screening devices, which comprises a bottom plate, a hopper obliquely arranged on the bottom plate, a stirring rod for uniformly stirring polypropylene particles rotatably arranged in the hopper, a vibrating screen mechanism for screening polypropylene particles of different sizes slidably arranged at the bottom of the hopper, a feeding cover plate rotatably arranged at one end of the hopper with a higher horizontal height, a discharging mechanism arranged at one end of the hopper with a lower horizontal height, the discharging mechanism and the feeding cover plate being connected with each other through a linkage mechanism, the linkage mechanism being used for ensuring that when one group of the discharging cover plate or the discharging mechanism is open, the other group is closed, a driving mechanism arranged on the bottom plate, the driving mechanism comprising a driving assembly, a transmission assembly and a triggering assembly, the driving assembly driving the stirring rod to stir, and driving the transmission assembly and the triggering assembly to move at the same time, the transmission assembly driving the vibrating screen mechanism to vibrate in the hopper, and the triggering assembly triggering the discharging mechanism to move.

The utility model discloses a low-temperature ultrafine grinder for traditional Chinese medicinal materials, which relates to the technical field of traditional Chinese medicinal materials, and comprises an outer box and a filter plate arranged in the outer box, the lower surface of the filter plate is provided with an aperture adjusting mechanism, and the aperture adjusting mechanism comprises a fixing ring fixedly connected with the lower surface of the filter plate. According to the low-temperature ultrafine grinder, through cooperative use of the electric telescopic rod, the rotating sleeve, the first sliding groove, the fixing ring, the second sliding groove, the third sliding groove, the sliding block, the adjusting plate and the sliding column, the fineness of powder can still be flexibly controlled under the low-temperature environment through the dynamic adjusting function; by reducing the pore diameter, the medicinal material can be crushed to superfine particle size at one time in a low-temperature embrittlement state, low-temperature energy consumption loss caused by repeated crushing is reduced, meanwhile, the damage of excessive crushing to the effective components of the heat-sensitive medicinal material is avoided, and the design gives consideration to the integrity of the active components of the medicinal material while ensuring the crushing efficiency. And the aperture of the screen is adjusted.