5results about How to "Avoid pooling" patented technology

This utility model relates to a constant-temperature germination device for soybean seeds, including a constant-temperature chamber and a frame installed inside the chamber. A water storage box is fixedly connected to the lower end of the frame, and a ventilated plate is provided on the inner side of the frame. A water-absorbing column is provided at the lower end of the ventilated plate, and a humidity-maintaining layer is provided at the upper end of the ventilated plate. A micro water pump is provided on one side of the surface of the water storage box. This utility model collects excess water through the water storage box, preventing the water from the upper layer from flowing downwards during spraying and avoiding water transfer when the seeds are stacked. Through the capillary water transport mechanism of the water-absorbing column, the water in the water storage box is evenly lifted to the humidity-maintaining layer by the capillary action of the water-absorbing column, ensuring that the gauze on the surface of the entire ventilated plate remains in a constant state of moisture, rather than relying on the upper layer spraying, thereby eliminating the humidity difference between the upper and lower layers. All seeds are in a uniformly moist environment, and the continuous water transfer from the water-absorbing column makes the humidity fluctuation smaller, ensuring the germination effect.

The invention relates to the technical field of Maotai liquor distillation and condensation equipment, in particular to a water-saving and energy-saving heat exchange device for the Maotai liquor industry and a control method.The device comprises a condensation tank, an air flow guide column and a heat exchange pipe, the air flow guide column and the heat exchange pipe are vertically arranged in the condensation tank, and the heat exchange pipe is of a spiral structure approximately; the rotational flow radius of the heat exchange tube is periodically changed; the air guide column is located in the middle of the heat exchange pipe, and an air guide blade is arranged at the lower end of the air guide column and located below the heat exchange pipe. The lower end part of the condensation tank is provided with an air flow inlet and a water outlet, and the top is provided with an exhaust port; a cooling water spraying part is arranged in the condensation tank and is positioned at the middle lower part of the heat exchange tube; the upper end of the heat exchange pipe is communicated with a wine steam input pipe, the lower end of the heat exchange pipe is communicated with a cooled wine discharge pipe, and the problems of high energy consumption and high water consumption generally existing in the traditional wine brewing industry are solved.

This invention relates to the field of laser processing technology, specifically to a time-series ultrafast laser lift-off method and system for silicon carbide wafers. The method includes selecting a silicon carbide single-crystal wafer and fixing it at the processing position; emitting an ultrafast laser pulse with a preset total energy and pulse width; dividing the ultrafast laser pulse into at least eight sub-pulses in the time domain to form a sub-pulse sequence; adjusting the energy of the sub-pulse sequence until the peak power of each sub-pulse is lower than the self-focusing critical power threshold of the silicon carbide single-crystal wafer under single-pulse action; focusing the energy-adjusted sub-pulse sequence onto the interior of the wafer to form a single-layer modified region; controlling the movement of the focused spot to expand into a continuous modified lift-off layer; and applying stress along the lift-off layer to separate the wafer into the peeled wafer and the remaining wafer. This invention can suppress vertical deep damage caused by self-focusing, achieve extremely low material loss, and realize rapid, easy, and high-quality wafer separation.

The application discloses a nerve tumor surgery postoperative rehabilitation nursing device, and relates to the technical field of nerve tumor surgery, which comprises a nursing helmet, and an air bag neck ring is arranged at the bottom of the nursing helmet. The nerve tumor surgery postoperative rehabilitation nursing device can continuously cool the top of the head of a patient, so that the wound site is kept in a dry state at all times, a good nursing and healing environment is provided for the rapid recovery of the wound site, the head of the patient is helped to dissipate heat in a large area, the feeling of stuffiness and discomfort of the head caused by long-time wearing of the nursing helmet is eliminated, the wound site is prevented from being excessively pressed, a child lock mode is provided, direct scratching of the wound site by the hands of children is effectively prevented, the normal recovery of the wound site is protected, wound healing is accelerated, scarring is prevented, automatic diffusion type medicine application wet nursing effect on the wound site of the head of the patient is realized, and slow medicine application on the wound site is realized.

This utility model belongs to the field of microbial fuel cell technology, specifically relating to a novel mixing device; a heat preservation component for water bath heating of the mixing container; a suspension component detachably connected to the heat preservation component and equipped with a power unit; a stirring component disposed on the suspension component, the power unit driving the stirring component to rotate and stir the mixture inside the mixing container, the stirring component being retractable to pass through the opening of the mixing container; and a shielding component disposed on the stirring component, which can retract and extend with the stirring component to cover the surface of the mixture inside the mixing container; thereby reducing the amount of foam generated by stirring the mixture on the surface of the mixture, thus avoiding a large amount of foam accumulating on the surface of the mixture and reducing the impact of foam on the mixture.