# US 9,517,959 B2 · Mixing apparatus for crushing sludge > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,517,959 B2 - Document ID: US9517959B2 - Status: Granted - Kind: B2 - Application number: 13/961,361 - Filed: 2012-03-30 - Published: 2014-02-13 - Granted: 2016-12-13 - Earliest claimed: 2011-03-30 - Assignees: Ecolab USA Inc. - Applicants: Seung-Nyung Huh; Jin Nyung Huh - Inventors: Seung-Nyung Huh; Jin Nyung Huh - Web page: https://patentgrep.com/patent/US9517959B2 ## CPC - C02F 11/14: with addition of chemical agents - B01F 23/431: {the liquids being introduced from the outside through or along the axis of a rotating stirrer, e.g. the stirrer rotating due to the reaction of the introduced liquid} - B01F 27/112: with arms, paddles, vanes or blades - B01F 27/1121: pin-shaped - B01F 27/2122: Hollow shafts - B01F 27/50: Pipe mixers, i.e. mixers wherein the materials to be mixed flow continuously through pipes, e.g. column mixers - B01F 2035/351: {Sealings} - B01F 2035/352: {Bearings} - B01F 2101/305: {Treatment of water, waste water or sewage} - C02F 1/56: Macromolecular compounds - C02F: TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE (separation in general B01D; special arrangements on waterborne vessels of installations for treating water, waste water or sewage, e.g. for producing fresh water, B63J; adding materials to water to prevent corrosion C23F; treating radioactively-contaminated liquids G21F9/04; regeneration of reactants for recirculation into processes, see the relevant places for the processes) - B01F: MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING (mixing paints B44D3/06) ## Abstract The present invention relates to mixing apparatus for crushing sludge comprising a motor part in which a rotary shaft is inserted into the motor part and the motor part is rotated, a moving part formed to penetrate the motor part from one side to another side and move a chemical which is flowed through an outside chemical feeder to the another side, and a paddle mounted on the another side of the motor part to rotate based on the rotation of the motor part and spray the chemical. ## Claims ### Claim 1 A mixing apparatus for crushing sludge comprising: a motor part having a rotary shaft inserted into the motor part and penetrating the motor part from a first side to a second side, the motor part configured to rotatably drive the shaft, a moving part defining a penetrating path, the moving part formed to penetrate the motor part from a first side to a second side and move a chemical which is fed by an outside chemical feeder to the second side; a paddle comprising a first saw-toothed part projecting out from the paddle, the paddle operably mounted to rotate with the shaft on the second side of the motor part, wherein the paddle is in communication with the penetrating path and configured to discharge the chemical from the moving part when rotated, wherein the motor part comprises: a main body in which the rotary shaft is inserted; a first plate combined with the first side of the main body and one outer circumference of the shaft; and a second plate combined with the second side of the main body and another outer circumference of the shaft, wherein the second plate comprises: a second bearing part combined with an outer circumference of the shaft; a second sealing part combined to surround the second bearing part around an outer circumference of the second bearing part; and a securing part surrounding the second bearing part and the second sealing part, and securing the second bearing part and the second sealing part at or to the second side of the motor part. ### Claim 2 (depends on 1) The mixing apparatus for crushing sludge according to claim 1, wherein the paddle has a moving hole through which the chemical moves inside the paddle, and a discharge hole connected to the moving hole, the discharge hole configured to discharge the chemical to the outside when the paddle is rotated. ### Claim 3 (depends on 2) The mixing apparatus for crushing sludge according to claim 2, wherein an inner wall surface of the discharge hole is formed sharply. ### Claim 4 (depends on 1) The mixing apparatus for crushing sludge according to claim 1, wherein the first plate comprises: a first bearing part combined with an outer circumference of the shaft; a first sealing part combined to surround the first bearing part; and an inlet part formed in the first sealing part and allowing the chemical fed from outside to flow to the penetrating path of the shaft. ### Claim 5 (depends on 4) The mixing apparatus for crushing sludge according to claim 4, wherein the first sealing part is a mechanical seal. ### Claim 6 (depends on 1) The mixing apparatus for crushing sludge according to claim 1, wherein the second sealing part is a mechanical seal. ### Claim 7 (depends on 1) The mixing apparatus for crushing sludge according to claim 1, wherein the moving part comprises: an inlet part formed on the first plate and allowing the chemical to flow in; the penetrating path formed in the shaft; and a moving hole formed in the paddle. ### Claim 8 (depends on 1) The mixing apparatus for crushing sludge according to claim 1, wherein the saw-toothed part projecting out from the paddle includes a first end attached to the paddle and a second end opposite the first end, the second end including a perpendicular corner. ### Claim 9 (depends on 1) The mixing apparatus for crushing sludge according to claim 1, wherein the saw-toothed part projecting out from the paddle includes a first end attached to the paddle and a second end opposite the first end, the second end including a blade-shaped corner. ### Claim 10 (depends on 1) The mixing apparatus for crushing sludge according to claim 1, further comprising a second saw-toothed part projecting out from the paddle, wherein the first and second saw-toothed parts are aligned along an axis extending parallel to a central longitudinal axis of the paddle, and wherein the first and second saw-toothed parts define an axial space therebetween.