Particulate restriction for fluid pumps

1 . A system for use with a fluid having particulates, the system comprising:

an inlet to allow the fluid into a chamber of the system, the chamber having a side flow path comprising a smaller width than a main flow path and located between at least one movable blade and at least one diffuser;

power features to cause the at least one movable blade to impart a centrifugal force to the fluid within the chamber;

at least one protrusion comprising a fin or vane located on an inner surface of the side flow path and between the at least one movable blade and the at least one diffuser, the at least one protrusion being a separate structure than the inner surface and being shaped to fit the inner surface of the side flow path, and the at least one protrusion to cause the particulates to gather or to cause the particulates to divert from a direction associated with the side flow path; and

a cavity on a motor rotor side that is opposite to at least one impeller, the side flow path leading to the cavity, wherein the at least one protrusion is configured to divert gas from the main flow path into the side flow path to provide gas cushioning.

2 . The system of claim 1 , further comprising:

a removable ring or seal to comprise the at least one protrusion.

3 . The system of claim 1 , further comprising:

a channel associated with the side flow path, and wherein the cavity comprising a permanent magnet to be controlled by an electromagnet of a housing of the system.

4 . The system of claim 1 , further comprising:

one or more pump stators located externally from the chamber; and

one or more permanent magnets forming part of a rotor and located within a cavity associated with the side flow path.

5 . The system of claim 1 , further comprising:

pump stators to comprise electromagnets, wherein an individual pump stator is located within an individual detachable stage of the pump; and

pump rotors to comprise permanent magnets, wherein the at least one movable blade, the at least one diffuser, and an individual pump rotor are located within the individual detachable stage of the pump, the individual detachable stage of the pump to operate independent of another individual detachable stage of the pump.

6 . The system of claim 1 , wherein the main flow path is an axial flow path, a radial flow path, or a mixed flow path.

7 . The system of claim 1 , further comprising:

a seal within a channel that provides at least part of the side flow path, the seal comprising the at least one protrusion.

8 . A pump to work with particulates of a fluid, the pump comprising:

at least one protrusion comprising a fin or vane to be located on an inner surface of a side flow path that is distinct from a main flow path within the pump and further to be located between at least one movable blade and at least one diffuser, the at least one protrusion being a separate structure than the inner surface and being shaped to fit the inner surface of the side flow path, and the at least one protrusion to cause the particulates to gather or to cause the particulates to divert from a first direction associated with the side flow path and into a second direction associated with the main flow path; and

a cavity on a motor rotor side that is opposite to at least one impeller, the side flow path leading to the cavity, wherein the at least one protrusion is configured to divert gas from the main flow path into the side flow path to provide gas cushioning.

9 . The pump of claim 8 , wherein the at least one protrusion is removably attached to an aspect of a chamber having the side flow path.

10 . The pump of claim 8 , wherein the at least one protrusion comprises an angle with respect to a direction of the main flow path.

11 . The pump of claim 8 , further comprising:

a removable ring or seal to comprise the at least one protrusion.

12 . The pump of claim 8 , further comprising:

a first channel to enable the side flow path and a second channel to enable the main flow path, the at least one protrusion located fully within the first channel or to extend into the second channel.

13 . The pump of claim 8 , further comprising:

attachment positions of the at least one protrusion to associate the at least one protrusion to an existing feature of a chamber having the side flow path.

14 . A method for a pump to be used with a fluid having particulates, the method comprising:

providing an inlet to allow the fluid into a chamber of the pump, the chamber having a side flow path comprising a smaller width than a main flow path and located between at least one movable blade and at least one diffuser;

enabling, using power features associated with the pump, the at least one movable blade to impart a centrifugal force to the fluid within the chamber;

enabling at least one protrusion as a separate structure than an inner surface of the side flow path, the at least one protrusion comprising a fin or vane and being shaped to fit the inner surface of the side flow path and to cause the particulates to gather or to cause the particulates to divert from a direction associated with the side flow path, the at least one protrusion to be located on the inner surface of the side flow path and between the at least one movable blade and the at least one diffuser;

providing a cavity on a motor rotor side that is opposite to at least one impeller, the side flow path leading to the cavity; and

effecting gas cushioning by the at least one protrusion diverting gas from the main flow path into the side flow path.

15 . The method of claim 14 , further comprising:

providing the at least one protrusion as a detachable feature to be used within the chamber.

16 . The method of claim 14 , further comprising:

providing a channel for the side flow path, the channel associated with the cavity, the cavity comprising a permanent magnet to be controlled by an electromagnet of a housing of the pump.

17 . The method of claim 14 , further comprising:

enabling one or more pump stators to be located externally from the chamber; and

providing one or more permanent magnets to form part of a rotor and located within a cavity associated with the side flow path.

18 . The method of claim 14 , further comprising:

providing pump stators with electromagnets, wherein an individual pump stator is located within an individual detachable stage of the pump; and

providing pump rotors with permanent magnets, wherein the at least one movable blade, the at least one diffuser, and an individual pump rotor are located within the individual detachable stage of the pump, the individual detachable stage of the pump to operate independent of another individual detachable stage of the pump.

19 . The method of claim 14 , further comprising:

enabling an axial flow path, a radial flow path, or mixed flow path as the main flow path for the pump.

20 . The method of claim 14 , further comprising:

enabling a seal within a channel to provide at least part of the side flow path, the seal comprising the at least one protrusion.