Hardened tailing deep cone paste thickener

Abstract

The utility model 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 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] This utility model relates to the field of rapid solid-liquid separation technology, and in particular to a thickener for deep cone paste of caking tailings. Background Technology

[0002] During the process of further solid-liquid separation and concentration of tailings in a thickener, tailings caking at the bottom of the thickener occurs due to the physicochemical properties of the tailings. Traditional scraper-type deep cone thickeners require powerful engines and rake frames, reducing operational efficiency. For non-powered silo-type thickeners, despite the presence of ductwork and nozzles for slurry preparation, once initial cracks form in the caking tailings, compressed air escapes along these cracks, creating a fixed air duct. This single-point fixed air duct cannot prevent the continued deterioration of tailings caking. Furthermore, the circular arrangement of ductwork at the bottom of the silo and the scattered distribution of nozzles on the ductwork, along with the height of the ductwork and nozzles themselves, obstruct tailings flow, leading to wear and failure. The use of end-point air outlets for tubular nozzles also creates dead zones for tailings caking within the height range of the ductwork and nozzles, affecting smooth operation. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of existing thickeners in terms of poor adaptability to tailings caking and unfavorable working conditions, and to provide a deep cone paste thickener for caking tailings.

[0004] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0005] The thickener for the thickened tailings includes a drive device (1) installed at the center of the top of the cylinder, and a central drive shaft (2) connected to the drive device (1) at the top and extending into the cylinder. The lower part of the central drive shaft (2) is provided with a horizontal long arm (4) and a horizontal short arm (7), with the horizontal short arm (7) below the horizontal long arm (4). Several water guide rods (3) are vertically fixed on the upper surface of the horizontal long arm (4), and several vertical comb teeth (6) are vertically fixed on the lower surface of the horizontal long arm (4). The bottom of the cylinder is connected to a cone bottom (5), and the intersection line of the cone bottom (5) and the cylinder and the axis of the horizontal long arm (4) are on the same plane. The cone surface of the cone bottom (5) is provided with a wind pressure orifice, and the outside 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 connected to an external air pipe (10).

[0006] Preferably, the horizontal long arm (4) and the horizontal short arm (7) are arranged symmetrically with equal length on both sides of the central drive 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). There is a running gap between the non-fixed end of the horizontal long arm (4) and the inner wall of the cone bottom (5), a running gap between the non-fixed end of the horizontal short arm (7) and the inner wall of the cone bottom (5), and a running gap between the non-fixed end of the vertical comb tooth (6) and the inner wall of the cone bottom (5).

[0007] More preferably, the horizontal long arm (4) is a rod-shaped structure, the axial section of the horizontal long arm (4) is a constant section or a variable section, and the axial section shape of the horizontal long arm (4) is a circle, a rhombus or other polygons.

[0008] More preferably, a plurality of the vertical comb teeth (6) are symmetrically arranged at equal intervals along the horizontal long arms (4) on both sides of the central drive shaft (2), and 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 constant cross section or a variable cross section, and the axial cross section shape of the vertical comb teeth (6) is a triangle, a circle, a rhombus, a trapezoid or other polygon.

[0009] 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) are cross-connected with the horizontal short arm (7).

[0010] More preferably, the cone bottom (5) is provided with wind pressure orifices at equal intervals along the horizontal circumference lines at different heights of the cone surface, and the horizontal circumference lines at different heights of the wind pressure orifices are equally spaced from the circumference lines of the running trajectories of the adjacent vertical comb teeth (6) on the horizontal projection.

[0011] More preferably, several of the water guide rods (3) are arranged symmetrically at equal intervals along the axial direction of the horizontal long arm (4).

[0012] Preferably, the bottom of the cone bottom (5) is provided with a limiting device (8), and the bottom of the central drive shaft (2) is connected to the limiting device (8).

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model is equipped with vertical comb teeth that rotate synchronously with the central drive shaft, forming a nail-tooth rotary rake motion inside the cone bottom. The nail teeth have a small force-bearing area, resulting in good tailings caking effect and low operating energy consumption. Compared with scraper thickeners, it solves the drawbacks of large scraper frame area, high resistance, high energy consumption, and even failure to operate due to rake pressure. Compared with non-powered storage thickeners, the vertical comb teeth 6 have an activation stirring function, solving the drawbacks of large fluctuations in underflow concentration and unstable operating conditions in storage thickeners.

[0015] 2. The external nozzle of this utility model eliminates the drawback of easy wear and failure of the built-in nozzle and air duct of the storage thickener. On the other hand, the nozzle and vertical comb teeth can work together to have the dual effect of loosening the sand at the end of the mixing plate and activating the sand at the end of the mixing plate, resulting in a stable underflow concentration.

[0016] 3. This utility model is symmetrically configured with a horizontal long arm, a horizontal short arm, and a water guide rod. During the rotation process, it forcibly cuts the tailings, causing the tailings flocs to lose water and be discharged to the upper part along the water guide rod, which helps to increase the tailings concentration.

[0017] 4. This utility model can also be used for non-compacted coarse tailings, and the vertical comb teeth can be operated and stopped in a timely manner according to the tailings concentration, so as to carry out unpowered and powered operation in a timely manner, thereby reducing operating costs.

[0018] In summary, the deep cone thickener for compacted tailings described in this invention features vertical comb teeth of unequal length and an external nozzle, forming a nail-tooth rotating rake motion within the cone bottom. This reduces the risk of rake damage in traditional scraper-type thickeners and eliminates the drawbacks of wear and failure of built-in air nozzles and ducts in traditional storage-type thickeners. The vertical comb teeth and external nozzle work together to achieve the dual functions of breaking up tailings compaction and homogenizing the tailings underflow, enabling steady-state, low-consumption operation. It can also be used for timely power operation of non-compacted coarse tailings. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the optional cross-sectional shape of the horizontal long arm of this utility model;

[0021] Figure 3 This is a schematic diagram of the optional cross-sectional shape of the vertical comb teeth of this utility model.

[0022] In the diagram: 1. Drive unit; 2. Central drive shaft; 3. Water guide rod; 4. Horizontal long arm; 5. Conical bottom; 6. Vertical comb teeth; 7. Horizontal short arm; 8. Limiting device; 9. Valve; 10. Air duct; 11. Nozzle. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments. Example 1

[0024] See Figures 1 to 3The thickener for thickened tailings includes a drive device 1 installed at the center of the top of the cylinder, and a central drive shaft 2 connected to the drive device 1 at its top and extending into the cylinder. The lower part of the central drive shaft 2 is provided with a horizontal long arm 4 and a horizontal short arm 7, with the horizontal short arm 7 below the horizontal long arm 4. Several water guide rods 3 are vertically fixed on the upper surface of the horizontal long arm 4, and several vertical comb teeth 6 are vertically fixed on the lower surface of the horizontal long arm 4. The bottom of the cylinder is connected to a conical bottom 5, and the intersection line of the conical bottom 5 and the cylinder is on the same plane as the axis of the horizontal long arm 4. The conical surface of the conical bottom 5 is provided with a wind pressure orifice, and the outside 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 connected to an external air duct 10.

[0025] The horizontal long arm 4 and the horizontal short arm 7 are symmetrically arranged with equal length on both sides of the central drive shaft 2. One end of the horizontal long arm 4 is vertically fixed to the central rotating shaft 2, and one end of the horizontal short arm 7 is vertically fixed to the central rotating shaft 2. There is a running gap between the non-fixed end of the horizontal long arm 4 and the inner wall of the cone bottom 5, and there is a running gap between the non-fixed end of the horizontal short arm 7 and the inner wall of the cone bottom 5. There is also a running gap between the non-fixed end of the vertical comb tooth 6 and the inner wall of the cone bottom 5.

[0026] 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. The axial cross section shape of the horizontal long arm 4 is a circle, a rhombus, or other polygons.

[0027] Several vertical comb teeth 6 are symmetrically arranged at equal intervals along the horizontal long arms 4 on both sides of the central drive shaft 2. The vertical comb teeth 6 are rod-shaped structures of unequal length. The axial cross-section of the vertical comb teeth 6 is a constant cross-section or a variable cross-section. The axial cross-section shape of the vertical comb teeth 6 is a triangle, a circle, a rhombus, a trapezoid, or other polygons.

[0028] The horizontal long arm 4 and the horizontal short arm 7 are arranged in parallel, and some of the vertical comb teeth 6 are cross-connected with the horizontal short arm 7.

[0029] The cone bottom 5 is provided with wind pressure orifices at equal intervals along the horizontal circumference lines at different heights of the cone surface. The horizontal circumference lines at different heights of the wind pressure orifices are equally spaced from the circumference lines of the running trajectories of the adjacent vertical comb teeth 6 on the horizontal projection.

[0030] Several of the aforementioned water guide rods 3 are symmetrically arranged at equal intervals along the axial direction of the horizontal long arm 4.

[0031] The bottom of the cone base 5 is provided with a limiting device 8, and the bottom of the central drive shaft 2 is connected to the limiting device 8.

Claims

1. A deep cone paste thickener for compacted tailings, characterized in that, The thickener for the thickened tailings includes a drive device (1) installed at the center of the top of the cylinder, and a central drive shaft (2) connected to the drive device (1) at the top and extending into the cylinder. The lower part of the central drive shaft (2) is provided with a horizontal long arm (4) and a horizontal short arm (7), with the horizontal short arm (7) below the horizontal long arm (4). Several water guide rods (3) are vertically fixed on the upper surface of the horizontal long arm (4), and several vertical comb teeth (6) are vertically fixed on the lower surface of the horizontal long arm (4). The bottom of the cylinder is connected to a cone bottom (5), and the intersection line of the cone bottom (5) and the cylinder and the axis of the horizontal long arm (4) are on the same plane. The cone surface of the cone bottom (5) is provided with a wind pressure orifice, and the outside 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 connected to an external air pipe (10).

2. The deep cone paste thickener for compacted tailings as described in claim 1, characterized in that, The horizontal long arm (4) and the horizontal short arm (7) are arranged symmetrically with equal length on both sides of the central drive shaft (2). One end of the horizontal long arm (4) is vertically fixed to the central drive shaft (2), and one end of the horizontal short arm (7) is vertically fixed to the central drive shaft (2). There is a running gap between the non-fixed end of the horizontal long arm (4) and the inner wall of the cone bottom (5), a running gap between the non-fixed end of the horizontal short arm (7) and the inner wall of the cone bottom (5), and a running gap between the non-fixed end of the vertical comb tooth (6) and the inner wall of the cone bottom (5).

3. The deep cone paste thickener for compacted tailings as described in 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. The axial cross section shape of the horizontal long arm (4) is circular, rhomboid or polygonal.

4. The deep cone paste thickener for compacted tailings as described in claim 2, characterized in that, Several vertical comb teeth (6) are symmetrically arranged at equal intervals along the horizontal long arms (4) on both sides of the central drive shaft (2). The several vertical comb teeth (6) are rod-shaped structures of unequal length. The axial cross section of the vertical comb teeth (6) is a constant cross section or a variable cross section. The axial cross section shape of the vertical comb teeth (6) is a triangle, a circle, a rhombus, a trapezoid, or a polygon.

5. The deep cone paste thickener for compacted tailings as described in 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) are cross-connected with the horizontal short arm (7).

6. The deep cone paste thickener for compacted tailings as described in claim 5, characterized in that, The cone bottom (5) is provided with wind pressure holes at equal intervals along the horizontal circumference lines at different heights of the cone surface. The horizontal circumference lines at different heights of the wind pressure holes are equally spaced from the circumference lines of the running trajectories of the adjacent vertical comb teeth (6) on the horizontal projection.

7. The deep cone paste thickener for compacted tailings as described in claim 6, characterized in that, Several of the aforementioned 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 as described in claim 1, characterized in that, The bottom of the cone (5) is provided with a limiting device (8), and the bottom of the central drive shaft (2) is connected to the limiting device (8).

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