Mobile abrasive slurry delivery apparatus

Inventor: Wesley Banks (Prior Lake, MN)

E04G21/0436 B60P3/2245 F04B17/05 F04B17/06 F04B23/021 Y10S417/90

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Quick Facts

Patent No.: US 12680322
App. No.: 19/243,148
Granted: Jul 14, 2026
Kind: B1

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Abstract

A gravity fed slurry delivery system capable of pumping high volumes of abrasive slurry at a worksite. A single operator mobile abrasive slurry delivery apparatus of the present invention may be used to pump an abrasive grout slurry at high volumes or pressure to lift concrete slabs, to fill voids under concrete slabs, to deliver abrasive grout for compaction grouting, or to deliver abrasive grout for construction joint stabilization.

Claims (34)

1 . A mobile abrasive slurry delivery apparatus, the apparatus comprising:

a base frame;

a hopper frame rotationally coupled to the base frame;

a hopper having a bottom section, sidewalls, a front end wall and a rear end wall, wherein the sidewalls, the front end wall and the rear end wall extend upward from the bottom section, and wherein the bottom section includes a main segment and a secondary segment such that the secondary segment extends upward at an angle less than ninety degrees from a plane of the main segment, and further wherein the secondary segment has a slurry outlet opening formed in the secondary segment;

a slurry tube coupled to the hopper in a sealing alignment with the slurry outlet opening of the secondary segment;

an abrasive slurry pump mounted to the hopper and aligned with the slurry outlet opening of the secondary segment wherein a free end of the abrasive slurry pump extends into the slurry tube; and

hydraulic lift cylinders, each hydraulic lift cylinder having a first end coupled to the base frame and a second end coupled to the hopper frame.

2 . The mobile abrasive slurry delivery apparatus as recited in claim 1 , wherein the abrasive slurry pump includes a hydraulic cylinder, a pump piston, and a plunger.

3 . The mobile abrasive slurry delivery apparatus as recited in claim 2 , wherein the plunger of the abrasive slurry pump is slidingly engaged to a pump piston rod of the pump piston.

4 . The mobile abrasive slurry delivery apparatus as recited in claim 3 , wherein the plunger of the abrasive slurry pump includes a base and pump piston rod guides.

5 . The mobile abrasive slurry delivery apparatus as recited in claim 4 , wherein the pump piston rod guides of the plunger slidingly engage with the pump piston rod of the pump piston.

6 . The mobile abrasive slurry delivery apparatus as recited in claim 4 , wherein the base of the plunger is cylindrical and the base includes a bore extending through the base along a longitudinal axis of the base.

7 . The mobile abrasive slurry delivery apparatus as recited in claim 6 , further including an edge of an end of the bore of the base aligned towards the pump piston rod and wherein the edge is chamfered.

8 . The mobile abrasive slurry delivery apparatus as recited in claim 2 , wherein the pump piston includes a rod coupling, a pump piston rod, and a lower piston.

9 . The mobile abrasive slurry delivery apparatus as recited in claim 8 , wherein the lower piston is positioned at a free end of the pump piston and the lower piston includes a chamfer on an outer end of the lower piston.

10 . The mobile abrasive slurry delivery apparatus as recited in claim 1 , further including a hydraulic reservoir and a hydraulic pump fluidly coupled to the hydraulic lift cylinders and the abrasive slurry pump.

11 . The mobile abrasive slurry delivery apparatus as recited in claim 1 , further including hydraulic directional controls fluidly coupled between the hydraulic pump and the hydraulic lift cylinders and the abrasive slurry pump to control flow of a hydraulic fluid between the hydraulic lift cylinders and the abrasive slurry pump.

12 . A mobile abrasive slurry delivery apparatus, the apparatus comprising:

a base frame;

a hopper frame rotationally coupled to the base frame;

a hopper having a bottom section, sidewalls, a front end wall and a rear end wall, wherein the sidewalls, the front end wall and the rear end wall extend upward from the bottom section, and wherein the bottom section includes a main segment and a secondary segment such that the secondary segment extends upward at an angle less than ninety degrees from a planar surface of the main segment, and further wherein the secondary segment has a slurry outlet opening formed in the secondary segment;

a slurry tube coupled to the hopper in a sealing alignment with the slurry outlet opening of the secondary segment;

an abrasive slurry pump mounted to the hopper and aligned with the slurry outlet opening of the secondary segment, wherein a free end of the abrasive slurry pump extends into the slurry tube and further wherein the abrasive slurry pump includes a hydraulic cylinder, a pump piston, and a plunger, and also wherein the plunger of the abrasive slurry pump includes a base and pump piston rod guides;

hydraulic lift cylinders, each hydraulic lift cylinder having a first end coupled to the base frame and a second end coupled to the hopper frame;

a hydraulic fluid reservoir; and

a hydraulic pump fluidly coupled between the hydraulic fluid reservoir and the hydraulic lift cylinders and the abrasive slurry pump.

13 . The mobile abrasive slurry delivery apparatus as recited in claim 12 , wherein the pump piston includes a pump piston rod, and the plunger of the abrasive slurry pump is slidingly engaged to the pump piston rod of the pump piston.

14 . The mobile abrasive slurry delivery apparatus as recited in claim 13 , wherein the piston rod guides of the plunger slidingly engage with the pump piston rod of the pump piston.

15 . The mobile abrasive slurry delivery apparatus as recited in claim 12 , wherein the base of the plunger is cylindrical and the base includes a bore extending through the base along a longitudinal axis of the base.

16 . The mobile abrasive slurry delivery apparatus as recited in claim 15 , further including an edge of an end of the bore aligned towards the pump piston rod and wherein the edge is chamfered.

17 . The mobile abrasive slurry delivery apparatus as recited in claim 12 , wherein the pump piston includes a rod coupling, a pump piston rod, and a lower piston.

18 . The mobile abrasive slurry delivery apparatus as recited in claim 17 , wherein the lower piston is positioned at a free end of the pump piston and the lower piston includes a chamfer on an outer end of the lower piston.

19 . The mobile abrasive slurry delivery apparatus as recited in claim 12 , further including hydraulic directional controls fluidly coupled between the hydraulic pump and the hydraulic lift cylinders and the abrasive slurry pump to control flow of a hydraulic fluid between the hydraulic lift cylinders and the abrasive slurry pump.

20 . The mobile abrasive slurry delivery apparatus as recited in claim 12 , wherein the lower piston of the pump piston and the base of the plunger are made of carbon steel.