Screw Pump with Anti-Turbulent Structure

Abstract

A screw pump with anti-turbulent structure has a housing, at least two screw rotors parallelly mounted through the housing and engaging with each other, and a partition disposed around the at least two screw rotor. The partition may have at least two circular walls respectively formed around the rotors and an annular protrusion formed on an inner surface of the housing and being adjacent to and kept from contacting the at least two circular walls, and may be a panel having at least two mounting holes respectively mounted around the rotors. Fluids flowing in opposite directions are divided by the partition and do not encounter each other and do not become turbulent. Consequently, pressurizing efficiency of the screw pump is improved.

1 . A screw pump comprising
 a housing having
 an inlet formed in and communicating the housing; and 
 an outlet formed in and communicating the housing; 
   at least two screw rotors axially and parallelly mounted rotatably through the housing, each screw rotor having two threaded parts formed around the screw rotor and being respectively right-hand threaded and left-hand threaded, and each threaded part engaging a corresponding threaded part of the other one of the at least two screw rotors; and   a partition mounted in the housing, disposed around the at least two screw rotors and between the threaded parts of each screw rotor and having at least two circular walls respectively formed around the at least two screw rotors and being adjacent to and kept from contacting each other.   
     
     
         2 . The screw pump as claimed in  claim 1 , wherein
 the housing further has a mounting tube axially formed on an inner surface of the housing and having an annular recess formed in and around an inner wall of the mounting tube;   the outlet of the housing is formed in the housing and the mounting tube and communicates with the mounting tube and corresponds to the annular recess of the mounting tube;   the at least two screw rotors are mounted through the mounting tube; and   the partition is mounted in the mounting tube and further has an annular protrusion formed on the inner wall of the mounting tube in the annular recess and being adjacent to and kept from contacting the at least two circular walls.   
     
     
         3 . A screw pump comprising
 a housing having
 an inlet formed in and communicating the housing; and 
 an outlet formed in and communicating the housing; 
   at least two screw rotor axially and parallelly mounted rotatably through the housing, each screw rotor having two threaded parts formed around the screw rotor and being respectively right-hand threaded and left-hand threaded, and each threaded part engaging a corresponding threaded part of the other one of the at least two screw rotors; and   a partition mounted in the housing, disposed around the at least two screw rotors and between the threaded parts of each screw rotor, being a panel having at least two mounting holes formed through the partition and respectively mounted around the at least two rotors, and each mounting hole having an inner edge respectively defined around the mounting holes and being adjacent to and kept from contacting a corresponding one of the at least two screw rotors.   
     
     
         4 . The screw pump as claimed in  claim 1 , wherein
 the housing further has a mounting tube axially formed on an inner surface of the housing and having an annular recess formed in and around an inner wall of the mounting tube;   the outlet of the housing is formed in the housing and the mounting tube and communicates with the mounting tube and corresponds to the annular recess of the mounting tube; and   the at least two screw rotors are mounted through the mounting tube.