4results about How to "Eliminate pressure differentials" patented technology

The invention discloses a gas path flow stabilizing device for thin film deposition and thin film deposition equipment, the gas path flow stabilizing device for thin film deposition comprises a reaction cavity, a precursor pipeline, a preceding-stage pipeline and a branch pipeline, the precursor pipeline is connected with the reaction cavity, and the preceding-stage pipeline is connected with the reaction cavity; the preceding-stage pipeline is connected with the precursor pipeline through the branch pipeline, and the precursor pipeline is divided into a first-section pipeline far away from the reaction cavity and a second-section pipeline close to the reaction cavity by a connecting node of the branch pipeline and the precursor pipeline; wherein the branch pipeline and / or the first section pipeline are / is provided with a pressure control device, and the pressure control device is configured to enable the pressure on the branch pipeline to be consistent with the pressure of the reaction cavity. The pressure difference between the reaction cavity and the branch pipeline is eliminated through the pressure control device, flow fluctuation during gas switching is avoided, and the quality and effect of thin film deposition are improved.

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 utility model discloses a kind of high-purity aluminum-silicon-titanium alloy processing vacuum melting equipment, it is related to aluminum-silicon-titanium alloy processing field, the utility model includes platform, the top of platform is equipped with furnace body, and the inside of furnace body is equipped with inner lining, and one side of furnace body is equipped with inflation assembly. The utility model is provided with inflation assembly, when opening furnace cover, it is necessary to balance the pressure inside and outside furnace body, at this time, electric push rod is started, so that piston rod contracts and drives piston to move up, at this time, piston below is in negative pressure state, second check valve opens while first check valve is in closed state, and the inert gas in the inert gas storage tank outside is entered into the inside of cylinder by inlet pipe, when piston moves down, inert gas is filled into furnace body through gas pipe and first check valve, until the pressure balance inside and outside furnace, to eliminate the pressure difference inside and outside furnace, avoid sealing structure damage and mechanical impact risk, prolong equipment life, improve the safety when opening furnace cover simultaneously.

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.