In addition to plastic stakes, we also produce brass stakes. In addition to lamps that can be customized, our stakes, three hole mount, wire connectors, riser all can be customed as clients' requests.
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Oil diffusion jet pump
Vacuum pumps that draw on high-pressure, high-speed, and directional oil vapor jets. The ultimate pressure of this pump is about 10 Pa, working pressure range is generally 1.0 to 10 Pa, pumping rate range of hundreds to tens of thousands of liters per second, the maximum back pressure of a few hundred Pa, is to obtain the main vacuum equipment one. Spread oil jet pump is widely used in vacuum smelting, space simulation test, vacuum coating and some of the vacuum system is not sensitive to oil pollution. In the vacuum system, it can be used as the main pump, but also in series between the oil diffusion pump and the mechanical vacuum pump, used to increase the extraction system in the middle of the pressure range of pumping capacity and reduce the pumping capacity of the foreline mechanical vacuum pump. So it is often called oil booster pump. Like the oil diffusion pump, it is also made up of diffusion nozzle, jet nozzle, pump body, diffuser, oil pan, vapor conduit, cooling system and heater (see figure oil diffusion jet pump construction). But in terms of performance and pump structure, it differs from oil diffusion pumps. The ultimate vacuum is different between the two, the oil diffusion pump is 10 Pa to less than 10 Pa, while the oil diffusion jet pump is 10 Pa. The oil diffusion pump requires a full pumping speed in the pressure range of 10 to 10 bar, while the oil diffusion injection pump requires a full pumping speed in the pressure range of 1 to 10 bar. If both the same nominal pumping speed, the latter's displacement than the former large. Oil diffusion pump equipped with fractionation and purification devices, and oil diffusion jet pump not only does not install fractionation and purification devices, but also use larger heating power heating and use of low boiling point, saturated vapor pressure of the pump oil, resulting in oil diffusion jet Pump vapor pressure than the diffusion pump large number or several times, that is up to hundreds of Pa and even thousands of Pa. Oil Spray Jet Pumps A jet nozzle and long diffuser with a large expansion ratio (ratio of nozzle exit area to throat area) are required to raise the pump's foreline back pressure so that the pump can stably operate at 10 to 1 Pa Pressure range or at a higher pressure range work. Therefore, the oil diffusion jet pump is a vacuum pump that combines both the oil diffusion pump and the jet pump (see water vapor jet vacuum pump). In the work, in order to prevent oxidation of pump oil, oil diffusion jet pump is also started with the oil diffusion pump, to use the first stage pump pre-pumped to 1 Pa vacuum, the pan can start heating.