Two-liquid-type, double-row structured trochoid pump for transferring high-viscosity liquids under high pressure

Abstract

Disclosed is a two-liquid-type, double-row structured trochoid pump for transferring high-viscosity liquids under high pressure. A front body, a first housing, a center body, a second housing, and a rear body are successively coupled to form an outer body, and a first idler is coupled to an inside of the first housing. A first rotor is inserted into the first idler, a second idler is coupled to an inside of the second housing, and a second rotor is inserted into the second idler. A shaft is coupled to penetrate the front body, the first housing, the center body, the second housing, the rear body, and the first and second rotors, and the shaft is connected to an external electric motor. Accordingly, transfer equipment can be reduced in size and weight through reduction of an attachment and a controller, which constitute the transfer equipment, into one device.

What is claimed is: 
     
         1 . A trochoid pump comprising:
 a front body having a first discharge port formed on an outer surface thereof, a first discharge flow path formed on an inside thereof to communicate with the first discharge port, a first through-hole formed in the center thereof, and a plurality of fastening holes formed on a circumference of the first through-hole;   a first housing coupled to the front body and having both open ends and a path formed in the center thereof;   a first idler rotatably inserted into the path of the first housing and having a gear groove formed on an inside thereof;   a first rotor inserted into the gear groove of the first idler with a diameter that is smaller than the gear groove, and having a plurality of gears formed on an outer periphery thereof;   a center body coupled to the first housing through one side thereof and having a second through-hole formed in the center thereof to coincide with the first through-hole;   a second housing coupled to the other side of the center body and having both open ends and a path formed in the center thereof;   a second idler rotatably inserted into the path of the second housing and having a gear groove formed on an inside thereof;   a second rotor inserted into the gear groove of the second idler with a diameter that is smaller than a diameter of the gear groove, and having a plurality of gears formed on an outer periphery thereof;   a rear body having a second discharge port formed on an outer surface thereof, a second discharge flow path formed on an inside thereof to communicate with the second discharge port, a second through-hole formed in the center thereof, and a plurality of fastening holes formed on a circumference of the second through-hole; and   a shaft coupled to the first through-hole of the front body, the first rotor, and the second rotor, and coupled to the second through-hole of the rear body after penetrating the first idler and the second idler to be rotated by a rotating force that is transferred from an external motor.   
     
     
         2 . The trochoid pump according to  claim 1 , wherein on the front body, two of the first discharge flow path and the first discharge port are symmetrically formed on both sides of the first through-hole, a first bypass line for connecting two of the first discharge flow paths that are symmetrically formed is formed, and a bypass valve or a return valve is formed on the first bypass line. 
     
     
         3 . The trochoid pump according to  claim 1 , wherein on the rear body, two of the second discharge flow path and the second discharge port are symmetrically formed on both sides of the second through-hole, a second bypass line for connecting two of the second discharge flow paths that are symmetrically formed is formed, and a bypass valve or a return valve is formed on the second bypass line.