Hardened tailing deep cone paste thickener

Abstract

The invention discloses a hardened tailing deep cone paste thickener which comprises a driving device mounted in the center of the top of a barrel and a central transmission shaft, wherein the top end of the central transmission shaft is connected with the driving device, and the central transmission shaft extends into the barrel; a horizontal long arm and a horizontal short arm are arranged at the lower part of the central transmission shaft, and the horizontal short arm is arranged below the horizontal long arm; a plurality of water guide rods are vertically and fixedly arranged on the upper surface of the horizontal long arm, and a plurality of vertical comb teeth are vertically and fixedly arranged on the lower surface of the horizontal long arm; the bottom of the barrel is connected with a cone bottom, the joint line of the cone bottom and the barrel and the axis of the horizontal long arm are located on the same plane, the conical surface of the cone bottom is provided with a wind pressure orifice, the outer side of the orifice is connected with a nozzle pipe, and the nozzle pipe is connected with a valve externally connected with a wind pipe.

Description

Technical Field

[0001] The invention relates to the technical field of rapid solid-liquid separation, in particular to a deep cone paste thickener for compacted tailings. Background Art

[0002] In the process of further solid-liquid separation and concentration increase in the thickener, the tailings at the bottom of the thickener are affected by the physical and chemical properties of the tailings, and the tailings are compacted. For the traditional scraper-type deep cone thickener, it is necessary to configure super-strong power and rake frame structure, which reduces the economic efficiency of equipment operation; for the non-powered storage thickener, although the silo air duct and air nozzle are configured to make pulp, once the initial cracks are formed in the tailings, the compressed air will escape along the cracks and lose pressure to form a fixed air duct, and the single-point fixed air duct cannot prevent the tailings from compacting further. In addition, the silo bottom air duct is arranged in a ring, and the air nozzles are scattered on the air duct. The height of the air duct and the air nozzle itself hinders the flow of tailings and is prone to wear and failure. The tubular nozzle uses end outlet, and the tailings compaction dead zone is easy to form within the height range of the air duct and the air nozzle, affecting the smooth operation of the working condition. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of existing thickeners such as poor adaptability to compacted tailings and unfavorable working conditions, and to provide a deep cone paste thickener for compacted tailings.

[0004] In order to achieve the above object, the technical solution provided by the present invention is: The compacted tailings deep cone paste thickener comprises a driving device (1) installed at the center of the top of a cylinder, and a central transmission shaft (2) connected to the driving device (1) at the top and extending into the cylinder; a horizontal long arm (4) and a horizontal short arm (7) are provided at the lower part of the central transmission shaft (2), and the horizontal short arm (7) is below the horizontal long arm (4); a plurality of water guide rods (3) are vertically fixedly provided on the upper surface of the horizontal long arm (4), and a plurality of vertical comb teeth (6) are vertically fixedly provided on the lower surface of the horizontal long arm (4); the bottom of the cylinder is connected to a cone bottom (5), the intersection line of the cone bottom (5) and the cylinder and the axis of the horizontal long arm (4) are in the same plane, and a wind pressure orifice is provided on the cone surface of the cone bottom (5), the outer side of the orifice is connected to a nozzle pipe (11), the nozzle pipe (11) is connected to a valve (9), and the valve (9) is externally connected to an air duct (10).

[0005] Preferably, the horizontal long arm (4) and the horizontal short arm (7) are symmetrically arranged with equal length on both sides of the central transmission shaft (2); one end of the horizontal long arm (4) is vertically fixedly connected to the central rotating shaft (2); one end of the horizontal short arm (7) is vertically fixedly connected to the central rotating shaft (2); a running gap is left between the non-fixed end of the horizontal long arm (4) and the inner side wall of the cone bottom (5); a running gap is left between the non-fixed end of the horizontal short arm (7) and the inner side wall of the cone bottom (5); and a running gap is left between the non-fixed end of the vertical comb teeth (6) and the inner side wall of the cone bottom (5).

[0006] More preferably, the horizontal long arm (4) is a rod-shaped structure, the axial cross-section of the horizontal long arm (4) is a constant cross-section or a variable cross-section, and the axial cross-section of the horizontal long arm (4) is circular, rhombus-shaped or other polygonal.

[0007] More preferably, a plurality of the vertical comb teeth (6) are symmetrically arranged at equal intervals along the axial direction of the horizontal long arms (4) on both sides of the central transmission shaft (2); the plurality of vertical comb teeth (6) are rod-shaped structures of unequal lengths; the axial cross-section of the vertical comb teeth (6) is a uniform cross-section or a variable cross-section; and the axial cross-section of the vertical comb teeth (6) is in the shape of a triangle, a circle, a rhombus, a trapezoid or other polygons.

[0008] More preferably, the horizontal long arm (4) and the horizontal short arm (7) are arranged in parallel, and some of the vertical comb teeth (6) among the plurality of vertical comb teeth (6) are cross-connected with the horizontal short arm (7).

[0009] More preferably, the cone bottom (5) is provided with wind pressure orifices at equal intervals along horizontal circumferential lines at different heights of the cone surface, and the horizontal circumferential lines at different heights where the wind pressure orifices are located are equidistant from the circumferential lines of the running trajectories of adjacent vertical comb teeth (6) in horizontal projection.

[0010] More preferably, a plurality of the water guide rods (3) are symmetrically arranged at equal intervals along the axial direction of the horizontal long arm (4).

[0011] Preferably, a limiting device (8) is provided at the bottom of the cone bottom (5), and the bottom of the central transmission shaft (2) is connected to the limiting device (8).

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention is provided with vertical comb teeth, which rotate synchronously with the central transmission shaft, and form spike teeth rotating raking inside the cone bottom. The force-bearing area of ​​the spike teeth is small, the effect of breaking the tailings compaction is good, and the operating energy consumption is low. Compared with the scraper-type thickener, the drawbacks of the large scraper rake frame area, large resistance, high energy consumption operation, and even the inability of the pressure rake to operate are solved; compared with the unpowered storage thickener, the vertical comb teeth 6 have an activated stirring function, which solves the drawbacks of large fluctuations in the bottom flow concentration and unstable working conditions of the storage thickener.

[0013] 2. The external nozzle arrangement of the present invention, on the one hand, eliminates the drawback that the built-in air nozzle duct of the storage-type thickener is easy to wear and fail; on the other hand, the nozzle pipe and the vertical comb teeth can work together to have the dual functions of loosening the tail sand of the plate and activating the tail sand of the stirring plate, and the bottom flow concentration is stable.

[0014] 3. The present invention symmetrically arranges the horizontal long arm, the horizontal short arm and the water guide rod, and forcibly cuts the tailings during the rotation process, causing the tailings flocs to lose water inside and discharge them to the upper part along the water guide rod, which is effective in increasing the concentration of the tailings.

[0015] 4. The present invention can also be used for non-compacted coarse tailings. The vertical comb teeth can be stopped and operated in time according to the concentration of the tailings, and unpowered and powered operations can be performed in time to reduce the operating cost.

[0016] In summary, the deep cone paste thickener for compacted tailings of the present invention is provided with vertical comb teeth of unequal length and an external nozzle tube, which forms a spike-tooth rotary raking movement in the bottom of the cone, reducing the risk of raking in the traditional scraper-type rake thickener and eliminating the drawback of wear and failure of the built-in air nozzle duct of the traditional storage-type thickener. The vertical comb teeth and the external nozzle tube work together to have the dual functions of breaking the compaction of tailings and stirring and homogenizing the bottom flow of tailings, which can achieve steady-state low-consumption operation and can also be used for timely power operation of non-compacted coarse tailings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 Schematic diagram of optional cross-sectional shapes of the horizontal long arm of the present invention; Figure 3 It is a schematic diagram of the optional cross-sectional shapes of the vertical comb teeth of the present invention.

[0018] In the figure: 1. driving device; 2. central transmission shaft; 3. water guide rod; 4. horizontal long arm; 5. cone bottom; 6. vertical comb teeth; 7. horizontal short arm; 8. limit device; 9. valve; 10. air duct; 11. nozzle pipe. DETAILED DESCRIPTION

[0019] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. Example 1

[0020] See also Figures 1 to 3The compacted tailings deep cone paste thickener comprises a driving device 1 installed at the top center of the cylinder, and a central transmission shaft 2 connected to the driving device 1 at the top and extending into the cylinder; a horizontal long arm 4 and a horizontal short arm 7 are provided at the lower part of the central transmission shaft 2, and the horizontal short arm 7 is below the horizontal long arm 4; a plurality of water guide rods 3 are vertically fixedly provided on the upper surface of the horizontal long arm 4, and a plurality of vertical comb teeth 6 are vertically fixedly provided on the lower surface of the horizontal long arm 4; the bottom of the cylinder is connected to the cone bottom 5, and the intersection line of the cone bottom 5 with the cylinder and the axis of the horizontal long arm 4 are in the same plane, and a wind pressure orifice is provided on the cone surface of the cone bottom 5, and a nozzle pipe 11 is connected to the outside of the orifice, and the nozzle pipe 11 is connected to a valve 9, and the valve 9 is externally connected to an air duct 10.

[0021] Among them, the horizontal long arm 4 and the horizontal short arm 7 are symmetrically arranged with equal length on both sides of the central transmission shaft 2, one end of the horizontal long arm 4 is vertically fixedly connected to the central rotating shaft 2, and one end of the horizontal short arm 7 is vertically fixedly connected to the central rotating shaft 2; a running gap is left between the non-fixed end of the horizontal long arm 4 and the inner wall of the cone bottom 5, a running gap is left between the non-fixed end of the horizontal short arm 7 and the inner wall of the cone bottom 5, and a running gap is left between the non-fixed end of the vertical comb teeth 6 and the inner wall of the cone bottom 5.

[0022] The horizontal long arm 4 is a rod-shaped structure, the axial cross-section of the horizontal long arm 4 is a constant cross-section or a variable cross-section, and the axial cross-section of the horizontal long arm 4 is a circle, a rhombus, or other polygons.

[0023] The plurality of vertical comb teeth 6 are symmetrically arranged axially at equal intervals along the horizontal long arms 4 on both sides of the central transmission shaft 2, and the plurality of vertical comb teeth 6 are rod-like structures of unequal lengths. The axial cross-sections of the vertical comb teeth 6 are equal cross-sections or variable cross-sections, and the axial cross-sections of the vertical comb teeth 6 are in the shape of triangles, circles, rhombuses, trapezoids or other polygons.

[0024] The horizontal long arm 4 and the horizontal short arm 7 are arranged in parallel, and some of the vertical comb teeth 6 among the plurality of vertical comb teeth 6 are cross-connected with the horizontal short arm 7 .

[0025] The cone bottom 5 is provided with wind pressure holes at equal intervals along horizontal circumferential lines at different heights of the cone surface. The horizontal circumferential lines at different heights where the wind pressure holes are located are equidistant from the circumferential lines of the running trajectories of the adjacent vertical comb teeth 6 in horizontal projection.

[0026] The plurality of water guide rods 3 are symmetrically arranged at equal intervals along the axial direction of the horizontal long arm 4 .

[0027] A limiting device 8 is provided at the bottom of the cone bottom 5 , and the bottom of the central transmission shaft 2 is connected to the limiting device 8 .

Claims

1. A deep cone paste thickener for compacted tailings, characterized in that: The compacted tailings deep cone paste thickener comprises a driving device (1) installed at the center of the top of a cylinder, and a central transmission shaft (2) connected to the driving device (1) at the top and extending into the cylinder; a horizontal long arm (4) and a horizontal short arm (7) are provided at the lower part of the central transmission shaft (2), and the horizontal short arm (7) is below the horizontal long arm (4); a plurality of water guide rods (3) are vertically fixedly provided on the upper surface of the horizontal long arm (4), and a plurality of vertical comb teeth (6) are vertically fixedly provided on the lower surface of the horizontal long arm (4); the bottom of the cylinder is connected to a cone bottom (5), the intersection line of the cone bottom (5) and the cylinder and the axis of the horizontal long arm (4) are in the same plane, and a wind pressure orifice is provided on the cone surface of the cone bottom (5), the outer side of the orifice is connected to a nozzle pipe (11), the nozzle pipe (11) is connected to a valve (9), and the valve (9) is externally connected to an air duct (10).

2. The deep cone paste thickener for compacted tailings according to claim 1, characterized in that: The horizontal long arm (4) and the horizontal short arm (7) are symmetrically arranged at both sides of the central transmission shaft (2) with equal lengths; one end of the horizontal long arm (4) is vertically fixedly connected to the central rotating shaft (2); one end of the horizontal short arm (7) is vertically fixedly connected to the central rotating shaft (2); a running gap is left between the non-fixed end of the horizontal long arm (4) and the inner side wall of the cone bottom (5); a running gap is left between the non-fixed end of the horizontal short arm (7) and the inner side wall of the cone bottom (5); and a running gap is left between the non-fixed end of the vertical comb teeth (6) and the inner side wall of the cone bottom (5).

3. The deep cone paste thickener for compacted tailings according to claim 2, characterized in that: The horizontal long arm (4) is a rod-shaped structure, the axial cross section of the horizontal long arm (4) is a constant cross section or a variable cross section, and the axial cross section of the horizontal long arm (4) is circular, rhombus-shaped or other polygonal.

4. The deep cone paste thickener for compacted tailings according to claim 2, characterized in that: A plurality of the vertical comb teeth (6) are symmetrically arranged at equal intervals along the axial direction of the horizontal long arms (4) on both sides of the central transmission shaft (2); the plurality of vertical comb teeth (6) are rod-shaped structures of unequal lengths; the axial cross-section of the vertical comb teeth (6) is a uniform cross-section or a variable cross-section; the axial cross-section of the vertical comb teeth (6) is in the shape of a triangle, a circle, a rhombus, a trapezoid or other polygons.

5. The deep cone paste thickener for compacted tailings according to claim 3 or 4, characterized in that: The horizontal long arm (4) and the horizontal short arm (7) are arranged in parallel, and some of the vertical comb teeth (6) among the plurality of vertical comb teeth (6) are cross-connected with the horizontal short arm (7).

6. The deep cone paste thickener for compacted tailings according to claim 5, characterized in that: The cone bottom (5) is provided with wind pressure orifices at equal intervals along horizontal circumferential lines at different heights of the cone surface, and the horizontal circumferential lines at different heights where the wind pressure orifices are located are equidistant from the circumferential lines of the running trajectories of the adjacent vertical comb teeth (6) in horizontal projection.

7. The deep cone paste thickener for compacted tailings according to claim 6, characterized in that: A plurality of the water guide rods (3) are symmetrically arranged at equal intervals along the axial direction of the horizontal long arm (4).

8. The deep cone paste thickener for compacted tailings according to claim 1, characterized in that: A limiting device (8) is provided at the bottom of the cone bottom (5), and the bottom of the central transmission shaft (2) is connected to the limiting device (8).

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