130results about How to "Reduce backflow" patented technology

The invention relates to an electronic atomizing device with an air inlet capable of being opened and closed. The device comprises a cigarette mouth (10), an atomizer (20) communicated with the cigarette mouth (10), and a battery assembly (40) supplying power to the atomizer (20). The upper part of the atomizer (20) is provided with the air inlet (21), and the atomizer (20) is communicated with the outside through the air inlet (21). An air inlet switching assembly (50), which is used for closing or opening the air inlet (21), is disposed between the atomizer (20) and the cigarette mouth (10). The air inlet (21) is located at the upper part of the atomizer (20) not close to a part below the atomizer (20), thereby reducing the conditions that liquor condensate and liquid flavor materials flow back when the device is placed in an inclined manner. Meanwhile, the air inlet (21) also can achieve complete sealing through the air inlet switching assembly (50), thereby completely preventing the liquor condensate and liquid flavor materials from flowing back to the outside and polluting the appearance of the device, and reducing the possibility of damage to the battery assembly (40).

The invention provides a foam-dispensing pump container which is improved when the foam or liquid backflows to the inside of a pump after being dispensed to reduce the usability. The foam-dispensing pump container according to the present invention has the valve seat portion which protrudes inwardly below the air-liquid mixing unit and which is formed of the flexible member that can come into contact with the outer peripheral face of the latch portion of the rod-shaped valve body, and immediately after the nozzle head starts rising, the flexible valve seat portion comes into contact with the rod-shaped valve body before the upper opening end of the liquid chamber comes into contact with the rod-shaped valve body, thereby significantly reducing a backflow of the foam or liquid into the air passage, and consequently improving the usability of the foam-dispensing pump container.

The invention discloses an automatic streamlined operating platform for anti-corrosion prestressed concrete tubular piles. The automatic streamlined operating platform comprises two parallel operational rails, wherein an agitating zone, a centrifugal zone, a room temperature steam-curing zone, a high temperature steam-curing zone and a tubular pile stacking zone are sequentially arranged on each operational rail, transport vehicles run between the centrifugal zones and the tubular pile stacking zones, and tubular die transmission chains or crawler belts are arranged on the rails; slurry transport trolleys are arranged on the rails between the agitating zones and the centrifugal zones; a tensioning machine rail is arranged between the centrifugal zones on the two rails, and a tensioning machine runs on the tensioning machine rail; steel reinforcing cage manufacturing and grouting zones which are connected with the centrifugal zones through the rails are arranged at the outer sides of the centrifugal zones. The automatic streamlined operating platform adopts a reasonably configured uni-directional operational system to perform production and has the advantages of simplicity in operation, great operation environment, low labor intensity, few potential safety hazards, high production informatization degree and the like. The efficiency is increased by 20-30%, the per capita output is increased by 100-200%, the lifting times is reduced by five to six times, and cross driving operation is avoided.