Junk crushing device, assembly, and method thereof

A method for crushing junk in a fluid stream, comprising:

• assembling an internal housing within a body,
• wherein the assembling comprises connecting a plurality of sections of the internal housing in sequential fashion;
• supporting, by a bearing disposed in a circular plate, a shaft comprising externally integrated tear blades;
• rotating, by a hydraulically driven impeller, the shaft and the tear blades together;
• crushing, by the tear blades and by fixed blades formed to the internal housing, junk in the fluid stream;
• and
• filtering, by fluid stream discharge holes disposed in the circular plate, crushed junk.

A junk crusher assembly for crushing junk in a fluid stream, the junk crusher assembly comprising:

• a junk crusher device comprising:
• a circular plate comprising fluid stream discharge holes and a bearing;
• a shaft disposed within the bearing, the shaft comprising detachably connected tear blades that are configured to rotate with the shaft;
• an impeller, hydraulically driven by the fluid stream, configured to rotate the shaft;
• an internal housing comprising fixed blades;
• and
• a body configured to receive the internal housing such that the internal housing is secured to an interior of the body;
• a baffle plate configured to block junk that would not fit in the junk crusher device;
• a float valve configured to control the fluid stream such that the fluid stream flows in a single direction,
• wherein the float valve is disposed at a downhole end of the junk crusher assembly;
• and
• a casing configured to house the junk crusher device, the baffle plate, and the float valve.