Mixing apparatus for crushing sludge

Patent metadata

Field	Value
Publication number	US-10227249-B2
Application number	US-201615373805-A
Country	US
Kind code	B2
Filing date	Dec 9, 2016
Priority date	Mar 30, 2011
Publication date	Mar 12, 2019
Grant date	Mar 12, 2019

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.

First claim

We claim:

1. A system for mixing comprising:
a sludge pipe configured to transport a sludge therethrough;
an external chemical feeder configured to supply a chemical into the sludge pipe; and
a mixing apparatus secured to the sludge pipe and configured to mix the chemical with the sludge, the mixing apparatus comprising:
a motor configured to rotatably drive a shaft coupled to the motor at a first end of the shaft, the shaft defining a central rotational axis, and
a paddle connected to a second end of the shaft and configured to rotate with the shaft, the paddle extending into the sludge pipe and terminating in a curved end, the paddle having at least one projection extending in an outward direction from the central rotational axis of the shaft and terminating in an outward edge, the outward edge being parallel with the central rotational axis of the shaft.

2. The system of claim 1 , wherein the at least one projection is integral with the curved end.

3. The system of claim 1 , wherein the paddle extends into the sludge pipe in a direction parallel to the central rotational axis, and wherein the curved end curves toward the outward edge as the curved end extends in a direction away from the central rotational axis.

4. The system of claim 1 , wherein the curved end curves in the outward direction from the central rotational axis as the paddle extends proximally from a distal portion of the paddle, the distal portion of the paddle being the portion of the paddle extending furthcri furthest into the sludge pipe.

5. The system of claim 1 , wherein the at least one projection extending in the outward direction from the central rotational axis of the shaft and terminating in the outward edge comprises a first projection extending in the outward direction from the central rotational axis of the shaft and terminating in a first outward edge and a second projection extending in the outward direction from the central rotational axis of the shaft and terminating in a second outward edge, each of the first outward edge and the second outward edge being parallel with the central rotational axis of the shaft, wherein each of the first projection and the second projection is integral with the curved end.

6. The system of claim 1 , wherein the mixing apparatus further comprises a plate that secures a main body of the motor to the sludge pipe, and wherein the shaft extends within the plate.

7. The system of claim 6 , wherein the plate includes a sealing part configured to provide a seal between the main body of the motor and the sludge pipe.

8. The system of claim 7 , wherein the plate includes a bearing part disposed between the sealing part and the shaft.

9. The system of claim 8 , wherein the plate includes a securing part coupled to an outer side of the sealing part.

10. The system of claim 6 , wherein the external chemical feeder is spaced from the main body of the motor.

11. The system of claim 1 , wherein the external chemical feeder is configured to supply the chemical into the sludge pipe at locations spaced apart and aligned along a diameter of the sludge pipe.

12. The system of claim 1 , wherein the at least one projection includes a first side edge and a second side edge each extending in the outward direction, and wherein the outward edge is parallel with the central rotational axis of the shaft along a distance that extends from the first side edge to the second side edge.

13. A method for water treatment, the method comprising the steps of:
discharging a chemical into a sludge pipe, wherein the chemical is discharged into the sludge pipe at locations spaced along a diameter of the sludge pipe;
rotatably driving a shaft having a first portion that is coupled to a motor, the shaft defining a central rotational axis; and
forming a flock when the shaft is rotatably drive by the motor by intermixing the chemical with a sludge in the sludge pipe using a paddle that is coupled to a second portion of the shaft and extends into the sludge pipe, wherein the paddle terminates in a curved end at a distal portion of the paddle that extends furthest into the sludge pipe, wherein the paddle has a first projection extending in an outward direction from the central rotational axis of the shaft and terminating in a first outward edge, the first outward edge being parallel with the central rotational axis of the shaft.

14. The method of claim 13 , wherein the paddle has a second projection extending in the outward direction from the central rotational axis of the shaft and terminating in a second outward edge, the second outward edge being parallel with the central rotational axis of the shaft, and wherein the shaft is rotatably driven when forming the flock such that the first projection contacts a portion of the chemical and sludge at a first time and the second projection contacts the portion of the chemical and sludge at a second later time.

15. The method of claim 14 , wherein the first projection and the second projection are spaced about the shaft and integral with the curved end.

16. The method of claim 13 , further comprising the step of:
removing moisture from a microbial cell in the sludge when rotatably driving the shaft by contacting the microbial cell with the curved end.

17. The method of claim 13 , wherein the chemical is discharged into the sludge pipe from an external chemical feeder.

18. The method of claim 13 , wherein the locations spaced along the diameter of the sludge pipe from which the chemical is discharged into the sludge pipe are aligned at a common longitudinal location of the sludge pipe.

19. The method of claim 13 , wherein rotatably driving the shaft includes contacting an outer circumference of the first portion of the shaft with a bearing part disposed between the outer circumference of the shaft and a sealing part that seals between a main body of the motor and the sludge pipe.

20. A system for mixing comprising:
a sludge pipe configured to transport a sludge therethrough in a first direction of flow;
an external chemical feeder configured to supply a chemical into the sludge pipe at locations that are spaced from one another along an axis that is perpendicular to the first direction of flow; and
a mixing apparatus secured to the sludge pipe at a plate and configured to mix the chemical with the sludge, the mixing apparatus comprising:
a motor having a main body and configured to rotatably drive a shaft coupled to the motor at a first portion of the shaft, the shaft extending within the plate and defining a central rotational axis,
a sealing part located between the main body of the motor and the sludge pipe and configured to provide a seal therebetween,
a bearing part located between the first portion of the shaft and the sealing part, and
a paddle connected to a second portion of the shaft and configured to rotate with the shaft,
wherein the paddle extends into the sludge pipe and terminates in a curved end, the paddle having at least one projection extending in an outward direction from the central rotational axis of the shaft and terminating in an outward edge, the outward edge being parallel with the central rotational axis of the shaft.

Assignees

• Ecolab Usa Inc

Inventors

• Huh Seung-Nyung
• Huh Jin Nyung

Classifications

• C02F1/56

  Macromolecular compounds · CPC title

• C02F11/14 Primary

  with addition of chemical agents · CPC title

• B01F7/007

  Operations & Transport · mapped topic

• B01F2015/00084

  Operations & Transport · mapped topic

• B01F7/00258

  Operations & Transport · mapped topic