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  3. how to make a pressure switch...

how to make a pressure switch

The existing pressure switch is mainly composed of a right housing and a left housing, and an elastic diaphragm and a micro switch arranged between the right housing and the left housing.The Elastic Diaphragm isolates the right housing from the left and The micro switch is arranged outside the left housing,The elastic diaphragm can be hermetically sealed and driven to actuate the micro switch arranged outside the shell,The micro-switch is actuated by a pressure difference produced by the diaphragm moving between the right housing and the left housing .as a standard part, the micro-switch has higher reliability than the contact switch and the leakage current can be reduced to zero compared with the inductive switch.。However, micro-switch of the pressure switch is usually installed outside the shell, the left Shell must be opened a hole to make the elastic diaphragm react in chain with external micro switch through the pin.The hole must be separated from the cavity by flexible material so that it can work reliably at both positive and negative pressure differences.The micro-switch installed outside the shell will be polluted by water, dust and so on, which will affect the reliability and service life of the pressure switch.


The newly developed pressure switches include a left housing, a right housing, an elastic diaphragm between them, It has a bracket  in the cavity of the left shell body, and a switch is arranged on the bracket.A pin is arranged on the elastic diaphragm between the left and right shells, and the pin is close to the switch action surface.The pressure switch can avoid the pollution of outside water, steam and dust, and improve its service life and working reliability because the switch is installed in the shell,

In particular, in the optimized embodiment, the use of a spacer plate or a shape cavity and spacer diaphragm and flexible material for mounting the switch can further avoid the influence of internal steam flow dust on the pollution of the switch, and the utility model has the advantages of simple structure, convenient use and convenient manufacture, work pressure can also be appropriately adjusted.

 

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