US 12,117,004 B2
Progressive cavity pump
Keon Hee Kim, Incheon (KR); and Hwan Seong Park, Gyeonggi-do (KR)
Assigned to PROTEC CO., LTD., Gyeonggi-do (KR)
Filed by PROTEC CO., LTD., Gyeonggi-do (KR)
Filed on Sep. 20, 2023, as Appl. No. 18/470,439.
Claims priority of application No. 10-2022-0118356 (KR), filed on Sep. 20, 2022.
Prior Publication US 2024/0093685 A1, Mar. 21, 2024
Int. Cl. F04C 2/10 (2006.01); B05B 9/08 (2006.01); B05C 5/02 (2006.01); B05C 11/10 (2006.01); F04C 2/107 (2006.01); F04C 2/16 (2006.01); F04C 13/00 (2006.01); F04C 14/22 (2006.01); F04C 15/06 (2006.01)
CPC F04C 2/107 (2013.01) [B05C 11/10 (2013.01); F04C 2/16 (2013.01); F04C 13/002 (2013.01); F04C 14/22 (2013.01); F04C 15/06 (2013.01); F04C 2240/30 (2013.01); F04C 2240/806 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A progressive cavity pump comprising: a motor; a rotary shaft coupled to the motor and rotated; a rotor eccentrically connected to the rotary shaft and rotated; a stator including a rotor reception portion that extends in up and down directions so that the rotor is inserted therein, has a female screw recess formed in an inner wall surface, and stores a viscous liquid; and a nozzle formed to be in communication with the rotor reception portion so that the viscous liquid is discharged by a pressing force that is generated in the rotor reception portion due to the rotation of the rotor, the progressive cavity pump further comprising:
a support housing including a motor support that is coupled to the motor to support the motor and a shaft support that is formed so that the rotary shaft passes and supports the rotary shaft to be rotatable;
a stator body including the stator and the nozzle and coupled to the support housing to be attachable/detachable;
a syringe storing the viscous liquid; and
a syringe pipe connecting the syringe to the stator body so as to transfer the viscous liquid stored in the syringe to the stator,
wherein the stator body has a feeding flow path that connects the syringe pipe to the rotor reception portion of the stator,
wherein the support housing further comprises
a vertical support connected to a motor support to extend in up and down directions and to be coupled to the shaft support, and a stator support coupled to the vertical support and coupled to the stator body to be attachable/detachable
wherein the stator support of the support housing comprises:
a stator seating portion on which the stator body is seated; and
a fixing knob having a bolt shape which fixes the stator body to the stator seating portion by screwing through the stator seating portion as a screw while the stator body is seated on the stator support,
wherein the stator seating portion of the stator support in the support housing is formed to extend in the upper and lower directions and to have opened upper and lower portions, and has one surface opened toward the side direction so as to prevent interference with the stator body when the stator body is attached/detached.