Pneumatic control circuit and aluminum electrolysis cell including the same

Pneumatic control circuit and aluminum electrolysis cell including the same

  • CN 202,971,436 U
  • Filed: 01/31/2013
  • Issued: 06/05/2013
  • Est. Priority Date: 01/31/2013
  • Status: Active Grant
First Claim
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1. pneumatic control circuit, it is characterized in that:

  • comprise the solenoid valve that boosts (1), step-down solenoid valve (2) and cylinder (3), connect described cylinder (3) after the described solenoid valve that boosts (1) and step-down solenoid valve (2) are in parallel, also be parallel with pressure retaining valve (5) between the input end of the described solenoid valve that boosts (1) and output terminal, described pressure retaining valve (5) is used for providing required safety pressure.

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