Roots rotor for removing dust coagulum and droplets

Abstract

A roots rotor for removing dust coagulum and droplets comprises a rotor body, which rotates inside the roots pump case. Both ends of the rotor body are sealing surfaces, which are meshed with the inner wall of the roots pump case. The rotor slot scraping cavities are arranged on both sides of the sealing surface. The side of the rotor slot scraping cavity close to the sealing surface is set as the scraper surface, which forms a sharp edge with the sealing surface. A guide surface is arranged on the surface of the rotor body, and the guide surface is located on the side of the rotor slot scraping cavity away from the sealing surface. The utility model overcomes the disadvantages of the prior art, and the attachment can be scraped off and gathered into the rotor slot scraping groove through the action of the scraper surface; and with the rotation of the rotor body, the particles and dust can be easily dropped outside the exhaust port of the pump; thus to achieve to avoid the accumulation of dust, coagulum and other incompressible medium in the process gas on the wall of the pump case.

1 . A roots rotor for removing dust coagulum and droplets comprising a rotor body ( 1 ), which rotates inside the roots pump case ( 2 ), is characterized in that: both ends of the rotor body ( 1 ) are sealing surfaces ( 3 ), which are meshed with the inner wall of the roots pump case ( 2 ). The rotor slot scraping cavities ( 4 ) are arranged on both sides of the sealing surface ( 3 ). The side of the rotor slot scraping cavity ( 4 ) close to the sealing surface ( 3 ) is set as the scraper surface, which forms a sharp edge with the sealing surface ( 3 ). A guide surface ( 6 ) is arranged on the surface of the rotor body ( 1 ), and the guide surface ( 6 ) is located on the side of the rotor slot scraping cavity ( 4 ) away from the sealing surface ( 3 ). 
     
     
         2 . The roots rotor for removing dust coagulum and droplets of  claim 1 , is characterized in that: the bottom of the scraper surface ( 5 ) and that of the rotor slot scraping cavity ( 4 ) are circular arc transitions. 
     
     
         3 . The roots rotor for removing dust coagulum and droplets of  claim 1 , is characterized in that: the inner surface of the rotor slot scraping cavity ( 4 ) is a parabola structure. 
     
     
         4 . The roots rotor for removing dust coagulum and droplets of  claim 1 , is characterized in that: the guide surfaces ( 6 ) of the surfaces of two matched rotor bodies ( 1 ) are meshed.