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Small vacuum pump

1. Start-up with load.

If a small vacuum pump has a vacuum in its suction port or a pressure in its exhaust port before starting, another technical parameter of the pump should be considered: the maximum start-up load of the intake port and the maximum start-up load of the exhaust port.

2. Medium temperature of small vacuum pump. According to the temperature of the medium gas passing through the pump, choose the ordinary type or the high temperature type.

3. Reliability of small vacuum pumps. According to the severity of the consequences of the failure of the micro-pump, it is completely in accordance with its own requirements. Special attention is paid to the fact that this parameter is measured under full load and uninterrupted operation, which is

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Development of Automatic Control System for Vacuum Furnace

Vacuum furnace is the main energy-consuming equipment in our production and life. According to the international advanced level, the utilization rate of energy in our country is very low, and the potential of energy saving is great. In order to make the temperature precision reach (+1 C), the control process of charging, pressurizing and solenoid valve required by mechanical action and heat treatment process of vacuum furnace can be automatically controlled with programmable logic controller (PLC), which greatly improves the reliability of the system and guarantees the heat treatment quality of the workpiece. SHlMADEN of Japan has recently developed a programmable vacuum furnace temperature controller FP-21, which inputs heat treatment temperature control curve and programmable parameters into the regulator. With its fast, intuitive and rich on-site working interface, the whole process of

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Several Vacuum Pumps in Chemical Industry

1. Several kinds of vacuum pumps commonly used in chemical industry-the common vacuum pumps in chemical industry can be simply divided into variable-volume vacuum pumps and jet vacuum pumps. Variable-volume vacuum pumps are devices that use the periodic change of pump chamber volume to complete suction and exhaust. Reciprocating vacuum pumps, rotary vane vacuum pumps, slide valve vacuum pumps, water ring vacuum pumps and Roots vacuum pumps belong to variable-volume vacuum pumps. Type vacuum pump. Jet vacuum pump is a momentum transfer pump that uses the high-speed jet generated by the pressure drop of Venturi effect to transport gas to the outlet. Water jet vacuum pump, steam jet vacuum pump, steam-water series jet vacuum pump and steam-water combined jet vacuum pump belong to the same kind of jet vacuum pump. 2. Working Principle and Advantages and Disadvantages of Variable Volume Vacuum

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The hydraulic ejector is a mechanical device with three kinds of effective energy such as vacuuming, condensing and draining. It uses a certain pressure of water to be sprayed through a nozzle that is symmetrically evenly inclined to a certain angle and is concentrated at a focus.

Rotary Vacuum Pump In Coal Chemical

Due to the high jet flow velocity, a negative pressure is generated around the chamber to create a vacuum in the chamber, and the secondary steam is in direct contact with the jet stream to exchange heat. Most of the steam is condensed into water and a small amount of uncondensed steam. The non-condensed gas is also rubbed against the high-speed jet of water, mixed and squeezed, and is removed by the diffuser tube to create a higher vacuum in the chamber.

Vacuum Pump Classification

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