51results about How to "Affect airtightness" patented technology

The invention discloses a lubricating and cooling system for a die-casting machine injection punch and a lubricating and cooling method. The system comprises the injection punch, a connector, an injection rod, a cooling device, a lubricating device and a PLC (Programmable Logic Controller) arranged on the die-casting machine, wherein the injection punch is fixedly connected with the injection rod through the connector; a spiral oil suction groove is formed in the outer circumferential surface of a punch body of the injection punch; the cooling device and the lubricating device are respectively used for cooling and lubricating the injection punch; the lubricating device can be used for uniformly spraying atomized punch lubricating oil to cover the punch body and store the lubricating oil in the spiral oil suction groove; during the whole injection process, the lubricating oil in the groove can be continuously permeated into a pressure chamber, so as to guarantee supply of the lubricating oil; the cooling device is controlled by the PLC to cool and further can realize automatic cooling water recycle. The lubricating and cooling system disclosed by the invention can lubricate and cool the injection punch, ensures the clearance between the injection punch and the pressure chamber to meet the requirement, and facilitates improvement of the product quality and reduction of the enterprise production cost.

The invention relates to a universal water drain valve for an air delivery pipe, and belongs to the technical field of gate valves. A hollow cylindrical valve shell is annularly provided with at least four valve core installation holes and at least four valve cores; the valve cores are arranged in the valve core installation holes; and the axes of the valve cores are vertical to the axis of the valve shell. The valve has a scientific and reasonable structure and low cost and is easy to produce and manufacture and convenient to install and use; the valve is used for draining water from and feeding water into an underwater non-rigid air delivery pipe under complicated installation conditions, and can work at any transverse and longitudinal installation angle; when the pipe delivers air, thevalve removes accumulated water from the pipe, avoids the phenomenon that water exists in a U-shaped pipe due to gas and the water in the pipe, reduces air delivery pressure and saves energy; when the pipe stops delivering the air and relieves the pressure, the valve allows external water to enter the pipe, keeps internal pressure and external pressure balanced, prevents the pipe from being deformed and broken due to the external pressure, and prolongs the service life of the air delivery pipe; and a filter screen is covered on the outer side of a water inlet and outlet of each valve core, sothat floating objects in the water are prevented from entering the valve shell, and impurities in the water are prevented from influencing the sealing property of the valve cores and the air deliveryefficiency of the air delivery pipe.

The invention provides a process for a conveyor belt for a running machine, which comprises the steps of grey cloth delivery by grey cloth delivering device, preheating and ironing, pasting by a padding vertical scraper, pre-plasticization by a vertical drying oven, planishing and cooling, primary horizontal head coating, pre-plasticization and gelation, cooling and sizing, secondary head coating, drying oven plasticization, embossing, cooling, coiling and surface coating. The process adopts sandwich mesh fabric coating and a surface treatment process, is complete in process compared with common coating processing and can process vertical coatings, surface and bottom. The products processed by the process are good in air tight performance, suitable for outdoor use, long in service life, good in wear resistance and high in surface quality and have obvious economic value.

The invention discloses a high-performance non-sintered sliding plate joint material and a preparation method thereof. The High-performance non-sintered sliding plate joint material is prepared from the following components in parts by weight: 40-65 parts of corundum, 6-12 parts of flake graphite, 1.2-3.8 parts of silane coupling agent, 15-28 parts of nano oxide powder, and 6-10 parts of aggregate. The preparation method of the high-performance non-sintered sliding plate joint material comprises the following steps: (1) dissolving the silane coupling agent in solvent water, carrying out ultrasonic treatment, adding to a high-speed dispersing machine together with the nano oxide powder, sufficiently stirring, filtering and standing in a sealing manner for later use; and (2) adding the corundum and the aggregate to the high-speed dispersing machine, stirring for mixing, adding the nano oxide powder treated in the step (1) and flake graphite to the high-speed dispersing machine, stirring for mixing and discharging. The high-performance non-sintered sliding plate joint material and the preparation method thereof have the advantages that the preparation process is simple, the product is high in volume density, low in porosity, and excellent in adhesion property, erosion resistance and mechanical property at a high temperature, and the bleeding and leaking phenomena are reduced.