Double-cylinder circulating suction type fan of road sweeper

Double-cylinder circulating suction type fan of road sweeper

  • CN 107,476,975 B
  • Filed: 07/27/2017
  • Issued: 06/29/2021
  • Est. Priority Date: 07/27/2017
  • Status: Active Grant
First Claim
Patent Images

1. The utility model provides a road sweeper double-cylinder circulation suction formula fan which characterized in that:

  • including protection casing (14), be provided with preceding cylinder body (15), back cylinder body (16), change-over valve (13) in protection casing (14), preceding cylinder body (15) are provided with preceding jar induction port (151), preceding jar exhaust port (152), preceding cylinder piston (2), back cylinder body (16) are provided with back jar induction port (161), back jar exhaust port (162), back jar piston (3), preceding jar exhaust port (152) with back jar induction port (161) intercommunication, preceding cylinder piston (2) with back jar piston (3) syntropy turns to, when preceding cylinder piston (2) turn to preceding jar exhaust port (152) from preceding jar induction port (151), form the first suction chamber (17) that the volume is crescent between change-over valve (13), preceding cylinder body (15) and preceding cylinder piston (2), when preceding cylinder piston (2) turn to preceding jar induction port (151) from preceding jar exhaust port (152), and a second suction cavity (18) with gradually increased volume is formed among the switching valve (13), the front cylinder body (15), the rear cylinder body (16) and the rear cylinder piston (3).

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