Rotor suitable for flotation machine

Abstract

The utility model belongs to the technical field of mineral separation, and discloses a rotor suitable for a flotation machine. The rotor comprises a central shaft, a fixed disc and a plurality of blades; the fixed disc is fixedly arranged on the central shaft in a sleeving manner; the blades are arranged in the circumferential direction of the center shaft at intervals, the first side face of any blade is fixedly attached to the outer circumferential wall of the center shaft, and the second side face of any blade is fixedly attached to the lower side wall of the fixing disc. Wherein the first side face is defined as the side face, close to the center shaft, of any blade, and the second side face is defined as the side face, close to the fixing disc, of any blade; the lower side wall of the fixed disc is of an arc-shaped structure protruding towards the direction of each blade; a plurality of notches are formed in the sides, away from the center shaft, of the blades in the axial direction of the center shaft, and the opposite faces of the first side faces of the blades form an involute structure. According to the utility model, the wear rate of the rotor can be reduced, and the mineral separation efficiency can be effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of ore dressing, and particularly relates to a rotor suitable for a flotation machine. BACKGROUND

[0002] The flotation machine is a kind of commonly used ore dressing equipment in an ore dressing plant.

[0003] The process of the flotation machine to realize ore dressing is as follows: firstly, reagents are added to the ore pulp to be selected in the flotation machine; then, the rotor is driven to stir by mechanical force, so that air bubbles are formed in the above ore pulp into which air is passed, and then fine particles are enriched and floated, and they are sorted and treated. As can be seen, the rotor is the core component of the flotation machine for stirring the ore pulp and providing power for the contact between the ore pulp and air bubbles to realize effective ore dressing.

[0004] The rotor of the existing flotation machine comprises a fixed disc and a plurality of blades arranged at intervals based on the fixed disc. However, the existing fixed disc is in a flat plate structure, and the corresponding blades are also in a rectangular structure. Thus, a circulating flow area is easily formed in the process of stirring the ore pulp, which leads to fast wear of the rotor and low ore dressing efficiency. SUMMARY

[0005] The utility model aims to provide a rotor suitable for a flotation machine to solve the technical problems of fast wear of the rotor of the existing flotation machine and low ore dressing efficiency in the process of ore dressing.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A rotor suitable for a flotation machine comprises a central shaft, a fixed disc and a plurality of blades. The fixed disc is fixedly sleeved on the central shaft. The plurality of blades are arranged at intervals along the circumference of the central shaft, and the first side surface of any blade is fixedly attached to the outer peripheral wall of the central shaft, and the second side surface of any blade is fixedly attached to the lower side wall of the fixed disc.

[0008] Wherein, the first side surface is defined as the side surface of any blade close to the central shaft, and the second side surface is defined as the side surface of any blade close to the fixed disc.

[0009] The lower side wall of the fixed disc is in an arc structure protruding towards the blades. A plurality of notches are formed on the side of each blade away from the central shaft along the axial direction of the central shaft, and the opposite surface of the first side surface of each blade forms a involute structure.

[0010] Further, the central shaft is in a hollow structure.

[0011] The end face of the center shaft away from each blade is an open face; wherein the center shaft is communicated with the blower through the open face;

[0012] The end face of the center shaft close to each blade is a closed face, and the center shaft is provided with a plurality of air holes on the outer peripheral wall below the fixed disc.

[0013] Further, the end of the center shaft close to each blade is a reverse taper structure.

[0014] Further, it comprises a flange, one side of the flange is fixed with the open face, and the other side is fixed with the rotating shaft.

[0015] Further, a plurality of material passing holes are formed on any blade.

[0016] Further, the side face of each cutout close to the lower side wall of the fixed disc is defined as a first cut face, and the cut face opposite to the first cut face in each cutout is defined as a second cut face.

[0017] The first cut face and the second cut face in each cutout are parallel to the lower side wall of the fixed disc.

[0018] Further, the cut face close to the center shaft in each cutout is defined as a third cut face, and the direction away from the fixed disc along the axial direction of the center shaft is defined as the downward direction along the axial direction of the center shaft.

[0019] The distance between the third cut face of each cutout on each blade and the center shaft gradually increases in the downward direction along the axial direction of the center shaft.

[0020] Further, the fixed disc is an arc-shaped disc protruding towards each blade.

[0021] A plurality of supporting members are arranged, and two adjacent side faces of each supporting member are fixed with the upper side wall of the fixed disc and the outer peripheral wall of the center shaft.

[0022] Further, a wear-resistant coating layer is arranged, and the wear-resistant coating layer is arranged on the free surface of each blade, the free space of the lower side wall of the fixed disc, and the free surface of the center shaft below the fixed disc.

[0023] Further, the wear-resistant coating layer is a rubber layer.

[0024] Beneficial effects:

[0025] The utility model discloses an improved structure of the rotor of the existing flotation machine to solve the technical defects of the fast self-wear of the rotor in the ore dressing process due to the structural defects and the low ore dressing efficiency.

[0026] The rotor comprises a central shaft, a fixed disc and a plurality of blades. The fixed disc is fixedly sleeved on the central shaft in a relative position; the plurality of blades are arranged at intervals along the circumference of the central shaft, and a first side of any blade is fixedly attached to the outer peripheral wall of the central shaft, and a second side of any blade is fixedly attached to the lower side wall of the fixed disc. The first side is defined as the side of any blade close to the central shaft, and the second side is defined as the side of any blade close to the fixed disc. In a specific structure, the lower side wall of the fixed disc is an arc structure protruding towards the blades; and a plurality of cutouts are formed on the side of each blade away from the central shaft along the axial direction of the central shaft, and the opposite side of the first side of each blade forms an involute structure.

[0027] Based on the above structure design, on the one hand, for the fixed disc, since the fixed disc is designed as a spherical disc, the resistance of the bubble and the ore pulp lifting is reduced, and the internal ore pulp self-circulation is effectively reduced; on the other hand, for the blades, since the cutouts are formed on the blades to form a toothed structure, not only the transportation capacity of the ore pulp of the flotation machine is improved, but also the stirring is facilitated, the efficiency of the combination of the ore pulp and the bubble is improved, and the enrichment index of the fine particles is improved; and since the blades are designed as the involute structure in the axial direction, not only the transportation capacity of the ore pulp upwards is improved, but also the piercing effect of the blade structure corner on the bubble passing is reduced. Thus, as a whole, not only the ore pulp is prevented from being trapped in the self-circulation to increase the invalid wear of the rotor, but also the beneficiation efficiency is effectively improved by improving the stirring uniformity, the ore pulp transportation and the bubble stock.

[0028] It should be understood that all combinations of the foregoing concepts and additional concepts described in greater detail below can be seen as part of the utility subject matter disclosed herein provided such concepts are not mutually inconsistent.

[0029] The foregoing and other aspects, embodiments and features of the present teachings can be better understood and appreciated from the following description, taken together with the references to the accompanying drawings. Other aspects, embodiments and features of the present teachings will become apparent from the following description, taken together with the references to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0030] The accompanying drawings are not intended to be drawn to scale. In the drawings, each identical, or nearly identical, component that is illustrated in various figures is represented with a like numeral. For purposes of clarity, not every component is called out in every drawing. There is a description of each of the embodiments of the various aspects of the present teachings as they come to be described with reference to the attached drawings. These are presented as examples of the present teachings and are not meant to be limiting.

[0031] Figure 1 The structure diagram of the rotor suitable for the flotation machine is described in the present embodiment.

[0032] In the drawings, reference numerals are: 1 is the central shaft, 2 is the fixed disc, 3 is the blade, 4 is the support, 5 is the flange; 11 is the vent hole, 31 is the cutout, 32 is the material hole. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the embodiments of the present application will be described clearly and completely below in combination with the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application. Unless otherwise defined, the technical terms or scientific terms used herein should be understood as the usual meaning by those skilled in the art to which the present application belongs.

[0034] The "first", "second" and similar words used in the patent application description and claims of the present application do not represent any order, quantity or importance, but are only used to distinguish different components. Similarly, unless the context clearly indicates otherwise, the singular form "one", "an" or "the" and the like do not represent a quantity limitation, but represent the existence of at least one. The words "include" or "contain" and the like mean that the elements or objects appearing before "include" or "contain" cover the features, whole, steps, operations, elements and / or components listed after "include" or "contain", and do not exclude the existence or addition of one or more other features, whole, steps, operations, elements, components and / or their collections. "Up", "down", "left", "right" and the like are only used to represent the relative positional relationship, and when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0035] In the beneficiation equipment of the ore dressing plant, the flotation machine is the most common and most important separation equipment, which is driven by mechanical force to play a stirring role through the rotor, and through the bubbles formed by air in the ore pulp to enrich and float the fine particles, so as to separate and process the fine particles. The rotor is the core component of the flotation machine, which can stir the ore pulp uniformly, provide power for the contact between the ore pulp and the bubbles, and improve the beneficiation efficiency. The existing rotor is generally composed of a flat fixed disc and a blade, and there is a circulating flow zone in the process of ore pulp running, which leads to low efficiency and fast wear, and has certain restriction on ore grinding and beneficiation. Based on this, the present embodiment provides a rotor suitable for a flotation machine to improve the technical defects.

[0036] The rotor suitable for the flotation machine disclosed by the present application will be further specifically introduced below in combination with the embodiments shown in the drawings.

[0037] Combination Figure 1 As shown in the figure, the rotor comprises a central shaft 1, a fixed disc 2, and a plurality of blades 3. For the convenience of description, the side of any blade 3 close to the central shaft 1 is defined as the first side, and the side of any blade 3 close to the fixed disc 2 is defined as the second side.

[0038] Specifically, in the relative position, the fixed disc 2 is fixedly sleeved on the central shaft 1; the plurality of blades 3 are arranged in the circumferential direction of the central shaft 1, and the first side of any blade 3 is fixedly attached to the outer peripheral wall of the central shaft 1, and the second side of any blade 3 is fixedly attached to the lower side wall of the fixed disc 2.

[0039] In the specific structure, the lower side wall of the fixed disc 2 is an arc structure protruding towards each blade; and a plurality of cutouts 31 are formed on the side of each blade 3 away from the central shaft 1 in the axial direction of the central shaft, and the opposite surface of the first side of each blade 3 forms a involute structure.

[0040] At this time in the specific implementation, based on the above structure design, on the one hand, for the fixed disc 2, since the existing flat fixed disc is designed as a spherical disc, the resistance of the bubble and the ore pulp during lifting is reduced, and the internal ore pulp self-circulation is effectively reduced. In addition, the spherical structure can also solve the problem of low beneficiation efficiency caused by local self-circulation of ore pulp in the flotation machine, and has the function of double promotion. On the other hand, for the blade 3, since the cutout 31 is formed on the blade 3 to form a toothed structure, not only can improve the transportation capacity of the flotation machine for the ore pulp, but also can help to fully mix and improve the efficiency of the combination of ore pulp and bubbles, and the enrichment index of fine particles can be improved; and since the blade 3 is designed as an involute structure in the axial direction, not only can improve the transportation capacity of the ore pulp upward, but also can reduce the piercing effect of the blade structure corner on the bubble passing. In general, not only can avoid the ore pulp from being trapped in the self-circulation to increase the invalid wear of the rotor, but also can effectively improve the beneficiation efficiency by improving the mixing uniformity, ore pulp transportation and bubble stock.

[0041] As a specific embodiment, in order to facilitate processing, the fixed disc 2 can be provided as an arc disc protruding towards each blade. At this time, in order to fix the arc disc, a plurality of supporting members 4 are provided, and the two adjacent sides of each supporting member 4 are fixedly connected to the upper side wall of the fixed disc 2 and the outer peripheral wall of the central shaft 1, respectively.

[0042] In order to further reduce the resistance of the bubbles and the ore pulp when lifting, the side surface of each cutout 31 close to the lower side wall of the fixed disc 2 is defined as the first surface, and the surface of each cutout opposite to the first surface is defined as the second surface. At this time, the first surface and the second surface of each cutout 31 are arranged to be parallel to the lower side wall of the fixed disc 2. At the same time, the surface of each cutout close to the central shaft 1 is defined as the third surface, and the direction along the axial direction of the central shaft 1 away from the fixed disc 2 is defined as the downward direction along the axial direction of the central shaft. At this time, the distance between the third surface of each cutout on each blade 3 and the central shaft 1 along the axial direction of the central shaft 1 is arranged to be gradually increased.

[0043] In order to facilitate aeration, the central shaft 1 is also hollow in the embodiment. Specifically, the end surface of the central shaft 1 away from each blade is an open surface, and the end surface of the central shaft 1 close to each blade is a closed surface. At this time, the central shaft 1 is connected to the air blower through the open surface, and a plurality of aeration holes 11 are also arranged on the outer peripheral wall of the central shaft 1 below the fixed disc 2. In the specific implementation, air can be introduced into the hollow structure of the central shaft 1 by the air blower, and the air can be introduced into the ore pulp through each aeration hole 11, so that the air bubbles in the ore pulp can be fully contacted and enriched, thereby improving the enrichment effect of the fine particles.

[0044] Further, in order to avoid the ore pulp from being trapped in the self-circulation, the end of the central shaft 1 close to each blade 3 is also arranged to be a reverse conical structure, thereby improving the uniformity of the ore pulp during stirring.

[0045] In order to facilitate the fixation of the rotor and the rotating shaft on the flotation machine, a flange 5 is also arranged. Specifically, one side of the flange 5 is fixed to the open surface, and the other side is fixed to the rotating shaft.

[0046] At the same time, in order to improve the uniformity of the ore pulp during stirring, a plurality of material passing holes 32 are also arranged on any blade 3. At this time, during the stirring process, the ore pulp can flow between each blade 3 through the material passing holes 32, thereby further avoiding the ore pulp from being trapped in the self-circulation.

[0047] In order to reduce the self-abrasion of the rotor, the rotor also includes a wear-resistant coating layer, which is arranged on the free surface of each blade, the free space of the lower side wall of the fixed disc, and the free surface of the central shaft below the fixed disc. At this time, the rotor can be directly contacted with the ore pulp through the wear-resistant coating layer, thereby avoiding the abrasion of the rotor. Specifically, the wear-resistant coating layer is a rubber layer. In the embodiment, the material of the rubber layer is an EDPM rubber which is wear-resistant and acid and alkali resistant. In the production process, the central shaft 1, the blade 3 and the fixed disc 2 are molded with the rubber to realize the processing of the rotor, thereby avoiding the defects of low production precision and high installation difficulty.

[0048] Although the utility model has disclosed as above with preferable embodiments, it is not used to limit the utility model. Those skilled in the art to which the utility model belongs can make various changes and decorations without departing from the spirit and scope of the utility model. Therefore, the protection scope of the utility model is accurate according to the definition of the claims.

Claims

1. A rotor suitable for use in a flotation machine, characterised in that, The utility model relates to a kind of air diffuser, including: Center shaft, fixed disc, and several blades;The fixed disc is fixedly sleeved on the center shaft; The several blades are arranged along the circumferential direction of the center shaft, and the first side surface on any blade is fixedly attached to the outer peripheral wall of the center shaft, and the second side surface on any blade is fixedly attached to the lower side wall of the fixed disc; Wherein, the first side surface is defined as the side surface of any blade close to the center shaft, and the second side surface is the side surface of any blade close to the fixed disc; The lower side wall of the fixed disc is arc-shaped structure protruding towards each blade direction;Several cutouts are also provided on the side of each blade away from the center shaft along the axial direction of the center shaft, and the opposite surface of the first side surface on each blade constitutes a involute structure.

2. A rotor suitable for a flotation machine according to claim 1, characterized in that, The center shaft is a hollow structure; The end surface of the center shaft away from each blade is an open surface;Wherein, the center shaft is communicated with the air blower through the open surface; The end surface of the center shaft close to each blade is a closed surface, and the outer peripheral wall of the center shaft below the fixed disc is also provided with a plurality of air holes.

3. A rotor suitable for a flotation machine according to claim 2, characterized in that, The end of the center shaft close to each blade is a reverse taper structure.

4. A rotor suitable for use in a flotation machine according to claim 2, characterised in that Including: Flange;One side of the flange is fixed with the open surface, and the other side is fixed with the rotating shaft.

5. A rotor suitable for a flotation machine according to claim 1, characterized in that, Several material passing holes are provided on any blade.

6. A rotor suitable for a flotation machine according to claim 1, characterized in that, The side surface of each cutout close to the lower side wall of the fixed disc is defined as the first cut surface, and the cut surface opposite to the first cut surface in each cutout is defined as the second cut surface; The first cut surface and the second cut surface in each cutout are parallel to the lower side wall of the fixed disc.

7. A rotor suitable for a flotation machine according to claim 1, characterized in that, The cut surface close to the center shaft in each cutout is defined as the third cut surface;The direction away from the fixed disc along the axial direction of the center shaft is defined as the downward direction along the axial direction of the center shaft. The distance between the third cut surface of each cutout on each blade and the center shaft gradually increases along the downward direction along the axial direction of the center shaft.

8. A rotor suitable for a flotation machine according to claim 1, characterized in that, The fixed disc is arc-shaped disc protruding towards each blade direction; Including several support members, and the two adjacent side surfaces of each support member are fixed with the upper side wall of the fixed disc and the outer peripheral wall of the center shaft respectively.

9. A rotor suitable for a flotation machine according to claim 1, characterized in that, Including wear-resistant coating, the wear-resistant coating is coated on the free surface of each blade, the free place of the lower side wall of the fixed disc, and the free surface of the center shaft below the fixed disc.

10. A rotor for a flotation machine according to claim 9, characterized in that The wear-resistant coating is a rubber layer.

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