CN219129559U - High-shear impeller and ore pulp stirring tank using same - Google Patents

Abstract

The utility model provides a high-shear impeller and an ore pulp stirring tank using the same, and relates to the technical field of modifying machines. The high shear impeller includes: the blade comprises a mounting part and two blades which are symmetrical in center relative to the axis, wherein one end of each blade is fixedly connected with the mounting part, comb tooth structures are respectively arranged at the edges of two sides of each blade, and the surfaces of the blades and the comb tooth structures are obliquely arranged relative to the axis of the mounting part. The ore pulp stirring tank comprises a tank body, a main shaft, a motor and a driving belt, wherein an ore inlet and an ore outlet are respectively formed in the bottom and the top of the tank body, the main shaft can rotate in the tank body under the driving of the motor and the driving belt, and the high-shear impeller can be detachably arranged on the main shaft. The high-shear impeller can provide axial circulating force, promote the upward flow of ore pulp, adapt to the conditions of large-specific-gravity ore pulp and effectively prevent the ore pulp from sinking into the tank; and the contact area of the impeller and ore pulp is larger, so that higher shearing force is generated, and the energy consumption is lower.

Description

High-shear impeller and ore pulp stirring tank using same

Technical Field

The utility model relates to the technical field of modifying machines, in particular to a high-shear impeller and a pulp stirring tank using the same.

Background

Along with the gradual depletion, fineness and impurity of the mineral resources which can be exploited in China, the flotation recovery of the mineral resources is more difficult, and in order to improve the flotation effect before ore pulp enters flotation equipment for flotation, the ore pulp needs to be fully contacted with a flotation reagent, and the ore pulp is ensured to have a certain stable concentration, so that the ore pulp stirring equipment is required to be arranged before flotation.

The modifier is used as a high-shear stirring and pulping device and is increasingly applied to each large mine flotation process. Especially for the ore with fine particles and higher mud content, the modifier can adopt a dispersion size mixing mode under the high shear force field environment to generate scrubbing action on the surface of the concentrate, so that oxide layers or high-ash fine mud on the surface of the concentrate particles are effectively removed, the surface of the concentrate particles forms a fresh surface, the difference of the surface properties of the concentrate and tailings is increased, the hydrophobicity and the selectivity of the concentrate are improved, the activation action is realized, and the flotation reagent adsorption is facilitated. Meanwhile, under the shearing condition, the collecting agent is dispersed into the shape of finer particles, so that the contact area with the concentrate particles is increased, and under the action of runoff and vortex of multiple sections, more opportunities for collision of the concentrate and the medicament are promoted, so that the medicament is better and effectively adsorbed with the concentrate particles, and the flotation separation precision and recovery rate of the fine concentrate are effectively improved.

One of the core structures of the pulp modifying machine is an impeller, and the structural form of the impeller has important influence on the mixing, circulating and dispersing effects of the modifying machine.

The utility model patent with publication number of CN103721620B provides a blade, a stirring system and a pulp modifying machine for modifying pulp, and discloses a blade for modifying pulp, which comprises a fixed part and a modified pulp part, wherein the modified pulp part is arc-shaped and has a comb structure, and the comb can rub and rub tiny mineral particles, so that the surface of the mineral particles is scrubbed, the formation of fresh mineral surfaces is promoted, and the adsorption of flotation agents is facilitated.

However, the radial sweepback impeller is adopted in the patent, and the sweepback mode reduces partial energy consumption compared with the complete radial mode, but the defect of high power consumption of the radial impeller is still difficult to overcome, and the energy consumption of the ore pulp stirring tank with the same effective volume is about 30 percent higher. The radial impeller has no lifting effect on ore pulp, the upgrading machine usually adopts a feeding mode of lower inlet and upper outlet, and three layers of horizontally arranged partition plates are arranged in the upgrading machine, so that the upward flow of the ore pulp is blocked to a certain extent. Therefore, the slurry with large specific gravity and high concentration is easy to deposit and form a sink at the bottom, which restricts the enlargement of the modifier.

In view of the above, the present utility model provides a high shear impeller and a slurry stirring tank using the same, so as to solve the above problems.

Disclosure of Invention

The utility model aims to provide a high-shear impeller and a pulp stirring tank using the same, wherein the high-shear impeller can promote the upward movement of pulp, prevent the pulp from sinking into the tank, and simultaneously, the axial flow impeller saves energy consumption compared with a radial impeller with the same specification.

In one aspect, the present utility model provides a high shear impeller comprising: the blade structure comprises a mounting part and two blades which are symmetrical with each other in center with respect to the axis of the mounting part, wherein one end of each blade is fixedly connected with the mounting part, comb tooth structures are respectively arranged at the edges of two sides of each blade, and the surfaces of the blades and the comb tooth structures are obliquely arranged with respect to the axis of the mounting part.

Preferably, the comb tooth structure is composed of a plurality of tooth shapes and grooves which are sequentially arranged at intervals, and the tooth shapes are integrally connected with the blades.

Preferably, each tooth shape of the comb tooth structure is uniform and is arranged in parallel with each other.

Preferably, the included angle between the blade surface and the axis of the mounting part is 10-60 degrees.

Preferably, the included angle between the tooth shape and the axis of the mounting part is 10-45 degrees, and different comb tooth structures on the same blade are inclined towards different sides relative to the surface of the blade.

Preferably, the mounting portion is a shaft sleeve, two blades are fixedly connected with the outer peripheral surface of the shaft sleeve respectively, the two blades are arranged in a central symmetry mode relative to the axis of the shaft sleeve, and fastening screw holes are formed in the surface of the shaft sleeve.

Preferably, the installation department includes two semicircular split type axle sleeves, two the blade respectively with each split type axle sleeve's outer peripheral face fixed connection, split type axle sleeve's both sides are equipped with the otic placode, the round hole has been seted up on the otic placode, two split type axle sleeve pass through the bolt with the round hole cooperation can dismantle and be connected.

In another aspect, the utility model provides a slurry agitation tank comprising the high shear impeller described above.

Preferably, the ore pulp stirring tank comprises a tank body, a main shaft capable of rotating relative to the main shaft is arranged in the tank body, the main shaft is matched with the top of the tank body through a coupler, a motor and a driving belt capable of driving the main shaft to rotate are arranged outside the tank body, the mounting part of the high-shear impeller is detachably arranged on the main shaft through a fastener, an ore inlet is formed in one side of the bottom of the tank body, and an ore outlet is formed in one side of the top of the tank body.

Preferably, the tank body is divided into three areas from top to bottom, the main shaft stretches into each area, the high-shear impeller and the main shaft are arranged in each area in an adaptive manner, a horizontal partition plate is arranged between the adjacent areas, and a vertical partition plate is arranged between the outer edge of the high-shear impeller and the side wall of the tank body.

Compared with the prior art, the utility model has the following beneficial effects:

1. compared with the traditional radial impeller, the axial flow impeller has a certain included angle between the plane of the impeller and the axial direction, and belongs to an axial flow impeller, the rotation of the axial flow impeller can bring axial flow of ore pulp, so that the upward movement of the ore pulp is promoted, and the ore pulp sinking groove is prevented;

2. compared with radial impellers with the same specification, the high-shear impeller saves more energy consumption;

3. the comb tooth structure on the blade is inclined relative to the main shaft and the surface of the blade, so that compared with the traditional vertical teeth, the contact area between the comb tooth structure and ore pulp is larger, the shearing effect of the impeller is enhanced, and the dispersion and desliming of the ore pulp are promoted.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic front view of a high shear impeller according to an embodiment of the present utility model;

FIG. 2 is a schematic perspective view of a high shear impeller according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a slurry agitation tank including a high shear impeller according to an embodiment of the present utility model;

FIG. 4 is a schematic front view of a second embodiment of the present utility model;

fig. 5 is a schematic perspective view of a second embodiment of the high shear impeller of the present utility model.

Reference numerals illustrate:

1: high shear impeller 101: a mounting part; 1011: a split shaft sleeve; 1012: ear plates; 1013: a through hole; 102: a blade; 103: a comb structure; 1031: tooth form; 1032: a groove; 104: fastening the screw hole; 2: a tank body; 3: a main shaft; 4: a speed reducer; 5: a motor; 6: a drive belt; 7: a mineral inlet; 8: an ore outlet; 9: a horizontal partition; 10: a vertical partition.

Detailed Description

The technical solutions of the present utility model will be clearly and completely described in connection with the embodiments, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise. Furthermore, the terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Example 1

As shown in fig. 1 and 2, the present utility model proposes a high shear impeller 1 comprising: the mounting part 101 and two blades 102 which are symmetrical in center about the axis of the mounting part 101, one end of each blade 102 is fixedly connected with the mounting part 101, the surface of each blade 102 is obliquely arranged relative to the axis of the mounting part 101, comb tooth structures 103 are respectively arranged at the edges of two sides of the surface of each blade 102, and the comb tooth structures 103 are obliquely arranged relative to the axis of the mounting part 101.

Specifically, the comb tooth structure 103 is composed of a plurality of tooth shapes 1031 and grooves 1032 which are sequentially arranged at intervals, the number of the tooth shapes 1031 and the number of the grooves 1032 are not fixed, the number and the size of the tooth shapes 1031 can be determined according to the actual size of the impeller, each tooth shape 1031 is integrally connected with the body of the blade 102, and each tooth shape 1031 is uniformly and mutually parallel.

In this embodiment, the included angle between the surface main body of the blade 102 and the axis of the mounting portion 101 is 10 ° to 60 °, so that the blade 102 is inclined with respect to the main shaft matched with the mounting portion 101, and has an axial flow characteristic, which is an axial flow impeller, and the rotation of the high-shear impeller 1 can bring about the axial flow of the pulp, that is, has a stronger axial circulation force, and promotes the upward flow of the pulp, thereby effectively preventing the pulp from sinking into the tank. Meanwhile, the axial flow impeller saves energy consumption compared with a radial impeller with the same specification.

The included angle between each tooth 1031 and the axis of the mounting portion 101 is 10 ° to 45 °, and different comb structures 103 on the same blade 102 are inclined toward different sides with respect to the surface of the blade 102. Because the tooth shape 1031 is inclined relative to the axis of the mounting portion 101, and the two comb tooth structures 103 are inclined towards different sides of the blade 102, compared with a common straight rack, the contact area between the comb tooth structures 103 and ore pulp is larger, so that stronger shearing force can be generated, the shearing effect of the impeller is enhanced, and the dispersion and desliming of the ore pulp are promoted.

In this embodiment, the mounting portion 101 is a shaft sleeve, two blades 102 are fixedly connected to the outer peripheral surface of the shaft sleeve, the surfaces of the two blades 102 are parallel to the axis of the shaft sleeve, the two blades 102 are arranged in a central symmetry manner with respect to the axis of the shaft sleeve, and fastening screw holes 104 are formed in the surface of the shaft sleeve.

As shown in fig. 3, the utility model also provides a pulp stirring tank comprising the high-shear impeller 1, wherein the pulp stirring tank comprises a tank body 2, a main shaft 3 which can rotate relative to the tank body 2 is arranged in the tank body 2, the main shaft 3 is vertically arranged, the main shaft 3 is matched with a speed reducer 4 fixed on the top wall of the tank body 2 through a coupler, a motor 5 and a driving belt 6 are arranged outside the tank body 2, the motor 5 drives the speed reducer 4 to work through the driving belt 6, the main shaft 3 can be driven to rotate through the coupler, an installation part 101 of the high-shear impeller 1 is a shaft sleeve, the high-shear impeller 1 is sleeved outside the main shaft 3 through the shaft sleeve and is detachably installed with the main shaft 3 through fasteners such as jackscrews, one side of the bottom of the tank body 2 is provided with a mineral inlet 7, one side of the top of the tank body 2 is provided with a mineral outlet 8.

In the embodiment, the inside of the tank body 2 is divided into three areas from top to bottom, the main shaft 3 extends into each area, and each area is provided with a high-shear impeller 1 and the main shaft 3 which are installed in an adaptive manner. However, the number of the high-shear impellers 1 is not necessarily 3, the number can be 1-3, the other impellers can be traditional impellers, but at least the impeller in the bottommost area is the high-shear impeller 1, so that the pulp can be driven to flow upwards along the axial direction.

The horizontal partition plates 9 are arranged between the adjacent areas, ore pulp can flow through the rotating areas of the blades 102 as much as possible through the horizontal partition plates 9, and is sheared at a high speed through the comb tooth structures 103, the contact area between the structures of the tooth shapes 1031 and the grooves 1032 and the ore pulp is larger, the shearing effect of the impeller is enhanced, the dispersion and desliming of the ore pulp are promoted, and the horizontal partition plates 9 can collide with ore materials in the shearing process, so that ore particles become smaller and are distributed more uniformly. The vertical partition plate 10 is arranged between the outer edge of the high-shear impeller 1 and the side wall of the tank body 2, so that ore pulp can be prevented from being dispersed along the horizontal direction, and the ore pulp can flow along the axial direction as much as possible.

Example two

In this embodiment, as shown in fig. 4 and 5, the high-shear impeller 1 has a split structure, the mounting portion 101 of the high-shear impeller includes two semicircular split shaft sleeves 1011, the split shaft sleeves 1011 can be fixedly connected to the outer peripheral surfaces of the split shaft sleeves 1011 respectively through two blades 102, the blades 102 are integrally connected to the split shaft sleeves 1011, and the positions and specific structures of the blades 102 are the same as those of the first embodiment, and will not be described in detail herein. Two sides of the split shaft sleeve 1011 are provided with lug plates 1012, round holes 1013 are formed in the lug plates 1012, and the two split shaft sleeves 1011 are matched with the round holes 1013 through bolts and are detachably connected.

In this embodiment, after the two split shaft sleeves 1011 are sleeved outside the main shaft 3, the split shaft sleeves 1011 are fixed outside the main shaft 3 by matching the bolts with the round holes 1013, and compared with the first embodiment, in this embodiment, the mounting part 101 adopts the two split shaft sleeves 1011 to match, so that the shaft diameter specification of the main shaft 3 which can be adapted is more, and the adaptability is stronger.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims (10)

1. A high shear impeller comprising: the blade structure comprises a mounting part and two blades which are symmetrical in center relative to the axis of the mounting part, wherein one end of each blade is fixedly connected with the mounting part, comb tooth structures are respectively arranged at the edges of two sides of each blade, and the surfaces of the blades and the comb tooth structures are obliquely arranged relative to the axis of the mounting part.

2. The high shear impeller of claim 1 wherein said comb structure is comprised of a plurality of tooth shapes and grooves spaced apart in sequence, said tooth shapes being integrally connected with said blades.

3. The high shear impeller of claim 2 wherein each of said tooth shapes of said comb structures are uniform and disposed parallel to one another.

4. A high shear impeller according to claim 2, wherein the angle between the vane surface and the axis of the mounting portion is in the range of 10 ° to 60 °.

5. The high shear impeller of claim 2 wherein the angle between the tooth form and the axis of the mounting portion is in the range of 10 ° to 45 ° and different comb tooth structures on the same blade are disposed at different angles relative to the blade surface.

6. The high shear impeller of claim 1, wherein the mounting portion is a sleeve, two blades are fixedly connected to an outer peripheral surface of the sleeve, the two blades are arranged in a central symmetry manner with respect to an axis of the sleeve, and fastening screw holes are formed in a surface of the sleeve.

7. The high shear impeller of claim 1, wherein the mounting portion comprises two semicircular split type shaft sleeves, two blades are fixedly connected with the outer peripheral surfaces of the split type shaft sleeves respectively, two sides of the split type shaft sleeves are provided with lug plates, round holes are formed in the lug plates, and the two split type shaft sleeves are detachably connected with the round holes in a matched mode through bolts.

8. A slurry agitation tank comprising a high shear impeller according to any one of claims 1 to 7.

9. The pulp stirring tank of claim 8, comprising a tank body, wherein a main shaft capable of rotating relative to the main shaft is arranged in the tank body, the main shaft is matched with the top of the tank body through a coupling, a motor and a driving belt capable of driving the main shaft to rotate are arranged outside the tank body, the mounting part of the high-shear impeller is detachably arranged on the main shaft through a fastener, a mineral inlet is formed in one side of the bottom of the tank body, and a mineral outlet is formed in one side of the top of the tank body.

10. The slurry stirring tank according to claim 9, wherein the tank body is divided into three areas from top to bottom, the main shaft extends into each area, the high-shear impeller and the main shaft are respectively arranged in each area in an adapting manner, a horizontal partition plate is arranged between the adjacent areas, and a vertical partition plate is arranged between the outer edge of the high-shear impeller and the side wall of the tank body.

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