Rely on a certain pressure of the working fluid through the nozzle high-speed jet pump away the fluid being delivered. The picture shows the working principle of the jet pump. When the working fluid Qo is ejected from the nozzle at a high speed, the surrounding air is entrained by the jet at the entrance of the throat to be vacuumed, so that the delivered fluid QS is sucked in. The two fluids are mixed in the throat and exchanged for momentum, which increases the kinetic energy of the fluid being transported and finally converts most of the kinetic energy into pressure energy through the diffuser. In 1852, Britain's D. Thompson first used a jet pump as an experimental device to remove water and air. Since the 1930s, jet pumps started to develop rapidly. According to the type of working fluid jet pump can be divided into liquid jet pump and gas jet pump, of which water jet and steam jet pump is most commonly used. Jet pump is mainly used for conveying liquids, gases and solids. It also forms a deep well jet pump unit for water supply with a centrifugal pump. A centrifugal pump on the ground supplies a submerged jet pump that draws well water as a working fluid. Jet mud pump for river dredging, underwater excavation and underground mud. Jet pump without moving working elements, simple structure, reliable work, no leakage, do not require specialized personnel custody, it is very suitable for underwater and dangerous special occasions. In addition, it can also use pressurized wastewater, waste gas (gas) as a working fluid to save energy. Although the efficiency of jet pumps is generally not more than 30%, the efficiency of newly developed multi-jet, multi-jet and pulse jet pumps has been enhanced.
Industrial Sectional Door
Industrial sectional doors are the most durable and longest lasting doors to ensure circulation at the areas of the factory entrance and exit of goods, loading and unloading areas.
The body of sectional door is forming by 40 mm sandwich panels. These panels provides sound and heat insulation due to the intense doped polyurethane insulation was injected between galvanized steel sheet. (50 kg/m3).
Industrial sectional door systems provide space-saving with opening parallel to the ceiling.Any opening can be used clearly . and produces in accordance with the transition range and the height in the factory buildings or warehouses.
Doors is working sliding by be the most appropriate the gap between the top level of the gate with a ceiling height within the side rasils. The door can be mounted in different ways according to the gap distance (standard, low, highlift and vertical track systems).
Industrial sectional doors can easily be opened automaticly by 230-380 V-AC/50 Hz electric motor or manualy thanks to torsion spring system that balances the weight of the door.The galvanized springs are made to be durable of 25.000 door cycles.Motor with emergency chain All the drive systems have a mechanical back-up system fitted to the reduction gearbox of the electric motor, so that the sectional door can be opened if the power fails. The reduction gearbox can then be powered using the chain.
Industrial Sectional Door,Industrial Overhead Sectional Door,Industrial Warehouse Sectional Door,Industrial Garage Interior Sectional Door
Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.selfrepairinghighspeeddoor.com