40results about How to "Avoid frequent opening and closing" patented technology

The invention relates to a portable refrigerator for medicines. The bottom and the top of a refrigerator are respectively wrapped in a heat preserving layer. A refrigerant bin used for containing refrigerant is arranged in the center of the refrigerator body, and an opening is formed in the top of the refrigerator body. A cover of the refrigerant bin is rotationally connected to the refrigerator body, and the side walls of the refrigerant bin are of net-shaped structures through which cold air can permeate out. A plurality of drawer-type refrigerating chambers capable of being drawn open from the side face of the refrigerator body are arranged around the refrigerant bin. A plurality of small holes are formed in a rear panel of each refrigerating chamber, two side plates of each refrigerating chamber are respectively provided with a slide groove, multiple limiting rods can move along the slide grooves, racks are arranged in the slide grooves, the two ends of each limiting rod are respectively provided with a protrusion matched with the corresponding rack and clamped on the corresponding rack, and the protrusions are made of elastic materials to overcome elastic force so as to make the limiting rods capable of moving on the slide grooves. With the portable refrigerator for medicines, medicines can be safely transferred outwards from a pharmacy, over-fast temperature rise of the refrigerator caused by too much loss of cold air in the medicine taking process is avoided, and thus the effects of the medicines are guaranteed.

A reactor light replenisher based on the microalgae flash effect, including: a light emitting unit, a frame, a flash drive assembly, and a sampling unit, wherein the frame has an upper frame, a middle frame, and a lower frame, and the upper frame and the lower frame have the same structure and are symmetrical up and down The middle frame is arranged at both ends of the middle frame. The middle frame is composed of a cylindrical mesh basket and end caps arranged on both sides of the cylindrical mesh basket. The end caps on both sides form a storage space with the upper frame and the lower frame respectively. The effect component and the light-emitting unit; the motor can drive the flash drive component to realize the opening and closing cycle, and then realize the shading and exposure of the light-emitting unit, so as to realize the continuous switching of the microalgae liquid under light and dark conditions, and the flash drive component is also set There are several vertical plates, which can stir the algae liquid during the opening and closing of the flash drive unit. The device solves the technical problems of high cost and system complexity of microalgae cultivation in the prior art.

The invention discloses a non-frequency-moving anti-hammer position control valve, an installation method and a position control method thereof, and belongs to the field of water pressure control of water supply pipe networks. The non-frequency hammer elimination valve of the present invention, because the control end is respectively connected with the highest water level and the lowest water level, it is guaranteed that only when the water level in the pool is lower than the drain conduit, the valve body is opened to enter the water into the pool, and only when the water level in the pool When the water level is higher than the maximum water level, the valve body closes to stop the water intake, and when the water level is between the minimum water level and the maximum water level, the valve body does not move, thus preventing frequent opening and closing during the water level control process and eliminating the impact of frequent valve actions. The impact of the valve structure has a longer service life and is less prone to damage. At the same time, it also avoids water hammer in the pipeline, which is conducive to the safety of the pipeline water supply system.