Abstract: A mud tank for processing drilling mud during drilling operations wherein the interior of the mud tank has sloping walls to guide sinking aggregate toward a sand trap disposed at the point of convergence thereof. The sand trap is comprised of the convergences area of the sloping walls and an inverted V-shaped cap member located thereabove along the entire length with ¼? gaps provided between the edges of the cap and their respective sloping walls. Aggregate is drawn through the gaps into the sand trap by a sand pump that provides a suction line therein. A center-divider within the mud tank separates the tank into a dirty tank and a clean tank to provide redundant cleaning operation for more effective removal of aggregate.

Abstract: Apparatus 10 discloses a submersible hydraulic powered pump for removing matter such as liquid, abrasive particulate, slurries or mixtures 12, from a sump or container. The pump has a housing 14 with an integral stand 16 projecting therefrom comprised of a plurality of legs extending to a base plate that will keep the pump spaced away from the ground and gauge the size of matter 56 allowed to enter the pump. Positioned within the housing base is an ingress aperture serving as the intake 50 for flowable matter into a chamber having an impeller assembly 52 driven by a hydraulically powered motor 18. The impeller assembly 52 comprises a plurality of perforated plates and an impeller plate 38 that allows for the release of trapped air through the impeller assembly's apertures at 46 to prevent the buildup of air and unwanted pressure gaps within the pumping lines also known as “air lock.

Abstract: Apparatus 10 discloses a submersible hydraulic powered pump for removing matter such as liquid, abrasive particulate, slurries or mixtures 12, from a sump or container. The pump has a housing 14 with an integral stand 16 projecting therefrom comprised of a plurality of legs extending to a base plate that will keep the pump spaced away from the ground and gauge the size of matter 56 allowed to enter the pump. Positioned within the housing base is an ingress aperture serving as the intake 50 for flowable matter into a chamber having an impeller assembly 52 driven by a hydraulically powered motor 18. The impeller assembly 52 comprises a plurality of perforated plates and an impeller plate 38 that allows for the release of trapped air through the impeller assembly's apertures at 46 to prevent the buildup of air and unwanted pressure gaps within the pumping lines also known as “air lock.