2results about How to "Eliminate pressure differentials" patented technology

The utility model discloses a hot press for wood boards. The hot press comprises a base, a hydraulic assembly and an autoclaving assembly. The base comprises a base, a mounting plate and a baffle, wherein the mounting plate and the baffle are perpendicularly fixed to the top of the base. The base, the mounting plate and the baffle form a U-shaped structure. The hydraulic assembly comprises a hydraulic cylinder and an extrusion plate, the hydraulic cylinder is fixed to the baffle, and the extrusion plate is fixedly installed at the output end of the hydraulic cylinder. The pressure steaming assembly comprises a plurality of pressure steaming plates arranged at intervals in the length direction of the base, the pressure steaming plates are arranged in a hot pressing space formed between the mounting plate and the baffle in parallel, and the plate face of each pressure steaming plate is parallel to the pressed plane of the extrusion plate and the inner side plane of the baffle. According to the hot press, through the design of the vertical stacked hot pressing space, the hydraulic pressure conduction direction is consistent with the gravity, the interlayer pressure difference caused by the gravity of traditional horizontal equipment is eliminated, it is ensured that all layers of wood boards are evenly pressed, and the problems that the moisture content distribution is uneven, gluing cracks and finished product warping are effectively solved.

The application discloses a sealed waterproof door and window, relates to the technical field of waterproof doors and windows, and comprises a window frame and a window sash, and an intermediate sealing rubber strip is arranged on the window frame; when the window sash is butted with the window frame, the intermediate sealing rubber strip forms a watertight cavity on the outdoor side between the window sash and the window frame and forms an airtight cavity on the indoor side; a flow guide hole is arranged on the indoor side of the window sash and is communicated with the watertight cavity, a drainage hole is arranged on the outdoor side of the window frame and is communicated with the watertight cavity, and an air pressure self-balancing mechanism is arranged in the intermediate sealing rubber strip, and the air pressure self-balancing mechanism automatically balances the air pressure of the airtight cavity and the watertight cavity. The air pressure self-balancing mechanism is used for automatically adjusting the pressure between the airtight cavity and the watertight cavity, weakening and eliminating the pressure difference between the airtight cavity and the watertight cavity, preventing the intermediate sealing rubber strip from deforming due to the pressure difference, preventing gaps from being formed at the connecting position of the intermediate sealing rubber strip, preventing rainwater from penetrating into the window frame, and further improving the sealing and waterproof effect.