Device for dispersing a water-soluble polymer

Patent metadata

Field	Value
Publication number	US-10773223-B2
Application number	US-201916524959-A
Country	US
Kind code	B2
Filing date	Jul 29, 2019
Priority date	Apr 2, 2015
Publication date	Sep 15, 2020
Grant date	Sep 15, 2020

Abstract

A device for dispersing a water-soluble polymer includes a primary water inlet circuit that feeds an overflow, at the bottom end of the cone, an assembly including a chamber for grinding and draining the dispersed polymer, having a rotor driven by a motor provided with knives, a stator, over all or part of the periphery of the chamber, a ring fed by a secondary water circuit, the ring communicating with the chamber by way of slots for spraying pressurized water onto the stator The slots of the stator and/or the knives of the rotor are tilted at an angle of between 20° and 80° relative to the horizontal plane of the stator and the lateral face of the blade next to the stator is curved in such a way as to make the distance separating the two components substantially constant.

First claim

The invention claimed is:

1. A device for dispersing a water-soluble polymer with a particle size of less than 1.5 mm, said device comprising:
a wetting cone wherein the polymer is metered, said cone being connected to a primary water inlet circuit
at the bottom end of the cone:
a chamber for grinding and draining the dispersed polymer including:
a rotor driven by a motor and provided with a center, a periphery and blades having a rear face and a front face,
a fixed stator having the form of a cylinder including slots,

over all or part of the periphery of the chamber, a ring fed by a secondary water circuit, the ring communicating with the chamber in such a way as to guarantee the spraying of pressurized water onto the stator,

wherein the slots of the stator and/or the blades of the rotor are tilted at an angle between 20° and 80° relative to a horizontal plane of the stator and the lateral face of the blade next to the stator is curved in such a way as to make the distance separating the two components substantially constant,
wherein an upper side of each blade has a first portion having a first height and a second portion having a second height, the second height being less than the first height, and
wherein the first height is between 35 and 40 mm and the second height is between 30 and 34.5 mm, both portions being separated by a tilted portion forming an angle with the second portion of between 130 and 140°.

2. The device according to claim 1 , wherein the front face of each blade connecting the center of the rotor to the periphery is of a generally rounded shape.

3. The device according to claim 1 , wherein the front face and the rear face of each blade connecting the center of the rotor to the periphery is of a generally rounded shape.

4. The device according to claim 1 , wherein the front face of each blade has a first portion having a first bend radius and a second portion having a second bend radius which is longer that the first bend radius and the rear face of the blade has a constant bend radius which is identical to the bend radius of the second portion.

5. The device according to claim 4 , wherein the first bend radius is between 30 and 50 mm and the second bend radius is between 55 and 70 mm.

6. The device according to claim 1 , wherein the blades are offset in relation to a radius of the rotor at an angle between 1 and 15°.

7. The device according to claim 6 , wherein the blades are offset in relation to the radius of the rotor at an angle between 2 and 10°.

8. The device according to claim 1 , wherein the slots of the stator and the blades of the rotor are tilted at an angle of between 30° and 70° relative to the horizontal plane of the stator.

9. The device according to claim 1 , wherein the slots of the stator and the blades of the rotor are tilted at an angle of between 40° and 60° relative to the horizontal plane of the stator.

10. The device according to claim 1 , wherein the slots are rectilinear and parallel to one another.

11. The device according to claim 1 , wherein the slots and the blades are tilted at two inclinations and the two inclinations are symmetrically opposed.

12. The device according to claim 1 , wherein slots of the stator are cut into part of a height of said cylinder.

13. The device according to claim 1 , wherein:
the slots in the stator have a width of between 50 and 1200 microns,
the stator cylinder has a thickness of between 5 and 30 mm,
a height of the stator is between 20 and 100 mm
a diameter of the stator is between 100 and 500 mm
a number of stator slots is between 50 and 1500,
the slots in the stator are regularly spaced apart at a distance of between 1 and 50 mm,
the slots have a length of between 10 mm and 100 mm.

14. The device according to claim 1 , wherein a distance separating a free end of the rotor blades and the stator slots is between 50 and 300 microns.

Assignees

• Spcm Sa

Inventors

• Bonnier Julien
• Pich Emmanuel

Classifications

• B01F2101/49

  Mixing drilled material or ingredients for well-drilling, earth-drilling or deep-drilling compositions with liquids to obtain slurries · CPC title

• B01F33/83

  Mixing plants specially adapted for mixing in combination with disintegrating operations · CPC title

• B01F27/812

  the stirrers co-operating with surrounding stators, or with intermeshing stators, e.g. comprising slits, orifices or screens · CPC title

• B01F27/2723

  the surfaces having a conical shape · CPC title

• B01F27/2722 Primary

  provided with ribs, ridges or grooves on one surface · CPC title