4results about How to "Fast flow rate" patented technology

The utility model discloses a shield tunneling machine speed reducer with a heat dissipation function, and particularly relates to the technical field of speed reducers, the shield tunneling machine speed reducer comprises a speed reducer body installed on a shield tunneling machine, a cooling water tank is installed at the bottom of the speed reducer body, and a heat dissipation assembly used for cooling is arranged outside the speed reducer body; a functional assembly used for accelerating the air circulation rate is arranged outside the heat dissipation assembly. The motor drives the fixed shaft and the linkage shaft which are connected with each other to rotate, so that the fan blades on the linkage shaft and the stirring blades on the fixed shaft can rotate, the fan blades rotate to accelerate the air flow rate, cooling water in the spiral pipe can be quickly cooled, the spiral pipe is arranged, the flowing distance of the cooling water can be prolonged, and the cooling effect is improved. The air is in full contact with hot air, and the stirring blades rotate, so that the flowing efficiency of cooling water can be improved, the phenomenon that heat cannot be effectively dissipated due to heat accumulation is avoided, and the heat dissipation effect of the cooling device can be ensured.

The application discloses a kind of frozen ablation catheter and its working method, comprising: frozen probe, first channel and second channel being communicated with frozen probe;Wherein, to form the shunt channel of first channel and second channel between first channel and second channel, shunt channel forms shunt inlet at first channel, and shunt channel forms shunt outlet at second channel;When refrigerant enters second channel from first channel through shunt channel, local low pressure is formed at shunt outlet.The application carries out different degrees of shunt in advance to high-speed flowing refrigerant, uses the local low pressure area formed by the entrainment phenomenon generated by high-speed fluid to determine whether the balloon of frozen probe exists breakage leakage by monitoring the pressure change in catheter.

The invention discloses a filter, including a frame, a main driver, a tape roller, a rubber belt, a tape roller, a filter cloth, a filter cloth roller, a weir, a distributor, a washer, a scraper, a filter cloth deviation corrector, a tape redirecting roller, a vacuum box, a movable trolley, and a vacuum box lifting device; the tape redirecting roller is arranged below the tape roller; the vacuum box includes an upper cone bucket and a lower cone bucket, which are arranged in the central area of ​​the filter and connected to the movable trolley through a support seat, at least two support seats are provided, and at least two corresponding movable trolleys are provided, the upper cone bucket and the lower cone bucket are connected through a quick opening structure, and a heating device and a heat preservation layer are provided outside the lower cone bucket; the vacuum box lifting device includes at least two lifting arms, a driver, and a travel switch, and the vacuum box lifting device is respectively arranged on both sides of the central area of ​​the filter. The invention enables the operator to walk and work upright in the filter; it is convenient to clean and repair the filtrate and dirt in the vacuum box; two vacuum boxes can be set to switch quickly to improve work efficiency.

The invention relates to the technical field of sand mold casting, and discloses a sand mold casting forming machine which comprises a casting table, a scattering barrel is arranged above the casting table, a sand screening plate is arranged under the scattering barrel, a protection box is fixedly installed on the outer wall of the sand screening plate, a sand box is arranged under the sand screening plate, and the sand box is placed at the top of the casting table. A scattering assembly and a scraping assembly are arranged in the scattering barrel, the scattering assembly is used for scattering caked sand in the scattering barrel, and the scraping assembly is used for scraping away sand attached to the inner wall of the scattering barrel; sand inside the scattering barrel and on the upper surface of the sand screening plate is stirred, so that caked sand is dispersed, particles of the sand can be distributed more uniformly by scattering the sand, the agglomeration phenomenon is reduced, the passing rate of the screen is increased, and a first rotating plate drives a scraping plate to revolve and rotate to scrape away the sand adhering to the whole inner wall of the scattering barrel.