Tag: basics

Butterfly valve, also known as flap valve, is a kind of regulating valve with simple structure. Butterfly valve can be used for switch control of low-pressure pipeline medium. It means that the closing member (disc or butterfly plate) is a disc, which rotates around the valve shaft to achieve opening and closing of a valve. Today, we are going to introduce what is a butterfly valve to you. We hope that you can have a general idea about it after reading.

A gas detector is an instrument that detects gas concentration. The instrument is suitable for dangerous places with flammable or toxic gases, and can continuously detect the content of the measured gas in the air within the lower explosion limit for a long time. It can be widely used in gas, metallurgy, steel, coking, electric power and other industries where flammable or toxic gases exist. Gas detectors are ideal monitoring instruments to ensure property and personal safety. Therefore, today we are going to introduce gas detector to you. We hope that you can know why you need a general idea about gas detector after reading.

Today, we are going to introduce gear pump to you. Gear pump is applied in industrial widely, if you have a general idea about gear pump, it will help you a lot in you work.

The gear pump is a rotary pump that relies on the change and movement of the working volume formed between the pump cylinder and the meshing gear to transport liquid or pressurize it. Two closed spaces are composed of two gears, pump body and front and rear covers. When the gear rotates, the volume of the space on the disengagement side of the gear increases from small to large, forming a vacuum. After the liquid is sucked in, the volume of the space on the meshing side of the gear changes from large to small, and the liquid is squeezed into the pipeline. The suction cavity and the discharge cavity are separated by the meshing line of the two gears. The pressure at the outlet of the gear pump depends entirely on the resistance at the pump outlet.