3results about How to "Prevent pressure" patented technology

The utility model discloses a back spray piece and back spray assembly, back spray piece includes the body, switching part and first reset part. The body is equipped with the water inlet hole and is suitable for with the water outlet hole of water inlet hole intercommunication, and the back spray water hole is suitable for along the first direction parallel to the horizontal plane and / or the direction of inclination to the first direction and washes to the back plate of human body, switching part is suitable for the movement between the first position and second position, and switching part is in the first position, makes water inlet hole and back spray water hole intercommunication, in the second position, makes water inlet hole and back spray water hole not intercommunication, thereby realizes the switching of waterway. The both ends of first reset part act on the body and switching part respectively, and are suitable for energy storage when switching part moves to the first position, and release energy to drive switching part to reset to the second position when back spray water hole does not water, prevent the next time opening, and back spray water hole directly water, lead to the splash problem of opening, and simultaneously, it can also assist switching part to switch to the second position, and it is more labor-saving when switching.

This utility model relates to the field of bridge engineering construction technology and discloses a bridge pile grouting device for bridge construction, including a bridge pile grouting device body. A sealing disc is movably connected to the bottom of the bridge pile grouting device body, and several fixing blocks are fixedly connected to the outside of the bridge pile grouting device body. A ring is fixedly connected to one side of the fixing blocks, a mud-shoveling block is slidably connected to one side of the ring, and a support plate is fixedly connected to one side of the mud-shoveling block. Before the cement is poured, the mud-shoveling block slides on the surface of the ring, which can drive the support plate to move. At the same time, by adjusting the bolt and the threaded connection inside one end of the support plate, the limiting disc can be moved towards one end of the hollow tube, thereby facilitating the clamping and fixing of the hollow tube. This avoids the worker holding the hollow tube for a long time and pressing against the sealing disc, thus bringing convenience to the worker's operation.