Feed flocculation mechanism of thickener and thickener with feed flocculation mechanism

Abstract

The invention discloses a thickener feeding flocculation mechanism and a thickener with the same, and belongs to the technical field of thickeners. Comprising a feeding pipe assembly, a flocculant adding pipe assembly, a self-diluting barrel assembly and a steady-flow distributing barrel. The feeding pipe assembly is connected with the steady-flow material distribution barrel, the dilution barrel assembly is arranged on the feeding pipe assembly, and the flocculant adding pipe assembly is connected with the self-dilution barrel assembly and the steady-flow material distribution barrel. A flocculating agent is sprayed into ore pulp flowing in the material pipe assembly through the self-diluting barrel assembly, so that the ore pulp is fully mixed with part of the flocculating agent before entering the steady-flow material distribution barrel, and meanwhile, the flocculating agent is sprayed into the steady-flow material distribution barrel through the flocculating agent adding pipe assembly, so that the flocculating agent is fully mixed with the steady-flow material distribution barrel. Furthermore, the flocculating agent is fully mixed with the ore pulp in the steady-flow material distribution cylinder, so that the ore pulp and the flocculating agent can be thoroughly and uniformly mixed with less time when the stirring device of the thickener main body is used for carrying out large-scale stirring again.

Description

Technical Field

[0001] The present invention relates to the technical field of thickeners, and in particular to a thickener feed flocculation mechanism and a thickener having the same. Background Art

[0002] Thickeners are mainly used in the mining field to concentrate low-concentration materials to a certain concentration while obtaining recoverable clarified water. Modern high-efficiency thickeners mainly promote the rapid sedimentation and concentration of materials by adding flocculants, and the feed device in the thickener plays the role of mixing flocculants and dispersing pulp, which is considered a key technology of the thickener. The conventional feed device is a cylinder extending into the middle and lower part of the thickener. The pulp is radially fed into the cylinder and flows into the thick-phase layer of the thickener disorderly. Although the structure of this feed device is simple, its mixing efficiency is low and it cannot adapt to the high-efficiency thickener accompanied by the addition process of flocculants. In this regard, various feed devices with novel structures and superior performances have been developed one after another, but there is still great room for improvement in their mixing and dispersion efficiencies, and further research is needed.

[0003] In the prior art, how to add flocculants has not been well solved. Common methods include manual addition and automatic addition by electrical equipment. When adding manually, since the pulp is constantly flowing during feeding, if we want the flocculants and the pulp to be better and evenly mixed, then the personnel need to add flocculants continuously in small amounts and multiple times, which results in a large labor burden for the personnel and also requires a certain amount of labor cost. If the flocculants are added after the pulp addition is completed, it is not easy for the flocculants to be quickly and evenly mixed with the pulp, and the stirring device inside the thickener needs to be turned on for a long time, resulting in large energy consumption. Directly using electrical equipment for control also requires additional energy supply, and the later maintenance and repair costs are relatively high. Summary of the Invention

[0004] The purpose of the present invention is to provide a thickener feed flocculation mechanism and a thickener having the same, aiming to at least solve one of the technical problems existing in the above prior art. To achieve the above purpose, the technical solutions adopted by the present invention are as follows:

[0005] A thickener feed flocculation mechanism and a thickener having the same include a feed pipe assembly, a flocculant addition pipe assembly, a self-dilution barrel assembly and a steady-flow cloth cylinder. The feed pipe assembly is connected to the steady-flow cloth cylinder for conveying pulp to the steady-flow cloth cylinder. The dilution barrel assembly is arranged on the feed pipe assembly. The flocculant addition pipe assembly is respectively connected to the self-dilution barrel assembly and the steady-flow cloth cylinder for adding flocculants to the self-dilution barrel assembly and the steady-flow cloth cylinder.

[0006] As a further solution of the present invention: The flocculant addition pipe assembly includes a main flocculant pipeline, a first branch pipeline, a second branch pipeline and a flocculant injection pipe. One end of the first branch pipeline and the second branch pipeline are respectively connected to the main flocculant pipeline, and the other ends of the first branch pipeline and the second branch pipeline are respectively connected to the flocculant injection pipe. The injection end of the flocculant injection pipe is located inside the steady flow cloth cylinder.

[0007] As a further solution of the present invention: The self-dilution barrel assembly includes a third branch pipeline, a barrel body and a flocculant injection flower basket. One end of the third branch pipeline is connected to the main flocculant pipeline, and the other end of the third branch pipeline is connected to the flocculant injection flower basket. The flocculant injection flower basket is located inside the barrel body, and the barrel body is installed on the feed pipe assembly.

[0008] As a further solution of the present invention: The feed pipe assembly includes a head pipeline, a middle pipeline and a tail pipeline. The head pipeline, the middle pipeline and the tail pipeline are fixedly connected in sequence. The tail pipeline is connected to the steady flow cloth cylinder, and the barrel body is installed on the middle pipeline.

[0009] As a further solution of the present invention: A notch is provided on the middle pipeline, and the flocculant injection flower basket is located above the notch.

[0010] As a further solution of the present invention: Valves are installed on the first branch pipeline, the second branch pipeline and the third branch pipeline.

[0011] As a further solution of the present invention: The flocculant injection flower basket includes a shell, and a plurality of spray holes are evenly provided on the side surface and the bottom surface of the shell.

[0012] As a further solution of the present invention: A partition is provided on the upper section of the inner wall of the steady flow cloth cylinder, and the flocculant injection pipe is located between the partition and the inner wall of the steady flow cloth cylinder.

[0013] The present invention also provides a thickener, including any one of the above-mentioned thickener feed flocculation mechanisms.

[0014] As a further solution of the present invention: The thickener includes a cylindrical silo, a bridge is horizontally erected on the top surface of the cylindrical silo, the steady flow cloth cylinder is arranged below the middle of the bridge, a hydraulic motor reducer is arranged in the middle of the top surface of the bridge, and the output end of the hydraulic motor reducer is fixedly connected to a rotating rod, and the rotating rod penetrates through the steady flow cloth cylinder.

[0015] The beneficial effects of the present invention:

[0016] The thickener feed flocculation mechanism provided by the present invention includes a feed pipe assembly, a flocculant addition pipe assembly, a self-dilution barrel assembly, and a steady-flow cloth cylinder. The pulp flows through the feed pipe assembly and is added into the steady-flow cloth cylinder. At the same time, the flocculant addition pipe assembly adds flocculant into the self-dilution barrel assembly and the steady-flow cloth cylinder respectively, and the self-dilution barrel assembly can control the amount of flocculant added to the feed pipe assembly as needed. Since the pulp in the feed pipe assembly is always in a flowing state, the flocculant sprayed by the flocculant spraying basket can be evenly added to the pulp, so that the pulp is fully mixed with part of the flocculant before entering the steady-flow cloth cylinder, reducing the energy required to ensure the full mixing of the flocculant and the pulp subsequently, that is, reducing the working intensity and service time of the stirring devices in the steady-flow cloth cylinder and the thickener, thereby improving their service life, reducing the energy consumption while reducing the time required for pulp sedimentation and concentration, and improving the work efficiency.

[0017] While transporting the pulp into the steady-flow cloth cylinder through the feed pipe assembly, the flocculant is added into the steady-flow cloth cylinder through the flocculant addition pipe assembly, making it easy for the flocculant to be quickly and evenly mixed with the pulp, avoiding the need to keep the stirring device inside the thickener running for a long time subsequently, and significantly reducing the energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 is a schematic structural diagram of a thickener feed flocculation mechanism of the present invention;

[0020] Figure 2 is a schematic sectional view of a thickener feed flocculation mechanism of the present invention;

[0021] Figure 3 is Figure 2 a schematic enlarged view of the structure at A in

[0022] Figure 4 is a schematic structural diagram of a thickener with a thickener feed flocculation mechanism of the present invention.

[0023] In the figure: 1. Feed pipe assembly; 11. Head pipe; 12. Middle pipe; 13. Tail pipe; 2. Flocculant addition pipe assembly; 21. Flocculant main pipe; 22. First branch pipe; 23. Second branch pipe; 24. Connecting flocculant spraying pipe; 25. Valve; 3. Self-dilution barrel assembly; 31. Third branch pipe; 32. Barrel body; 33. Shell; 34. Spray holes; 4. Steady-flow cloth cylinder; 41. Partition board; 5. Cylindrical silo; 6. Bridging; 7. Hydraulic motor reducer; 8. Rotating rod. DETAILED DESCRIPTION OF THE INVENTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0025] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, as well as a specific orientation structure and operation. Therefore, it should not be construed as a limitation to the present invention.

[0026] In addition, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0027] Please refer to Figures 1-3 As shown, the embodiment of the present invention provides a thickener feed flocculation mechanism, including a feed pipe assembly 1, a flocculant addition pipe assembly 2, a self-dilution barrel assembly 3, and a steady-flow cloth cylinder 4.

[0028] Among them, the feed pipe assembly 1 is connected to the steady-flow cloth cylinder 4. During operation, pulp is conveyed to the steady-flow cloth cylinder 4 through the feed pipe assembly 1. The dilution barrel assembly is arranged on the feed pipe assembly 1. The flocculant addition pipe assembly 2 is respectively connected to the self-dilution barrel assembly 3 and the steady-flow cloth cylinder 4. The flocculant addition pipe assembly 2 adds flocculant into the self-dilution barrel assembly 3 and the steady-flow cloth cylinder 4 respectively. By separately controlling the addition of flocculant into the self-dilution barrel assembly 3 and the steady-flow cloth cylinder 4, the amount of flocculant added can be adjusted as needed. At the same time, the self-dilution barrel assembly 3 can control the amount of flocculant added from the self-dilution barrel assembly 3 to the feed pipe assembly 1 as needed, so that the flocculant and the pulp can be better and evenly mixed. While conveying pulp into the steady-flow cloth cylinder 4 through the feed pipe assembly 1, flocculant is added into the feed pipe assembly 1 and the steady-flow cloth cylinder 4 through the flocculant addition pipe assembly 2, making the flocculant easy to be quickly and evenly mixed with the pulp, avoiding the need to keep the stirring device inside the thickener running for a long time, and greatly reducing energy consumption.

[0029] Please refer to Figure 1 and Figure 2As shown, in this embodiment, the flocculant addition pipe assembly 2 includes a flocculant main pipe 21, a first branch pipe 22, a second branch pipe 23 and a flocculant injection pipe 24. One end of each of the first branch pipe 22 and the second branch pipe 23 is connected to the flocculant main pipe 21, and the other end of each of the first branch pipe 22 and the second branch pipe 23 is connected to the flocculant injection pipe 24. The injection end of the flocculant injection pipe is located inside the stable flow distribution cylinder 4.

[0030] During operation, the flocculant enters through the flocculant main pipe 21, and then enters the first branch pipe 22 and the second branch pipe 23 respectively. The flocculants in the first branch pipe 22 and the second branch pipe 23 are respectively added into the pulp in the stable flow distribution cylinder 4 through the flocculant injection pipe. The two flocculant injection pipes inject flocculants into the pulp from different positions. With the stable agitation of the pulp by the agitation device in the stable flow distribution cylinder 4, the pulp and the flocculant are initially and fully mixed. Since the pulp and the flocculant have undergone preliminary local agitation before entering the thickener main body, when relying on the agitation device of the thickener main body to conduct large-scale agitation again, it takes less time to thoroughly and evenly mix the pulp and the flocculant.

[0031] Please refer to Figure 2 and Figure 3 As shown, in this embodiment, the self-dilution barrel assembly 3 includes a third branch pipe 31, a barrel body 32 and a flocculant injection flower basket. One end of the third branch pipe 31 is connected to the flocculant main pipe 21, the other end of the third branch pipe 31 is connected to the flocculant injection flower basket, the flocculant injection flower basket is located inside the barrel body 32, and the barrel body 32 is installed on the feed pipe assembly 1.

[0032] During operation, the flocculant enters the third branch pipe 31 through the flocculant main pipe 21, and then enters the flocculant injection flower basket from the third branch pipe 31. The flocculant injection flower basket injects the flocculant into the pulp in the feed pipe assembly 1. Since the pulp in the feed pipe assembly 1 is always in flow, the flocculant injected by the flocculant injection flower basket can be evenly added to the pulp, so that the pulp is fully mixed with some flocculants before entering the stable flow distribution cylinder 4, reducing the energy required to ensure the full mixing of the flocculant and the pulp subsequently, that is, reducing the working intensity and usage time of the agitation devices in the stable flow distribution cylinder 4 and the thickener, thereby increasing their service life. While reducing energy consumption, it reduces the time required for pulp sedimentation and concentration and improves work efficiency.

[0033] Please refer to Figure 2As shown in the figure, in this embodiment, the feed pipe assembly 1 includes a head pipe 11, a middle pipe 12, and a tail pipe 13. The head pipe 11, the middle pipe 12, and the tail pipe 13 are fixedly connected in sequence through flanges and bolts. The tail pipe 13 is connected to the steady-flow distribution cylinder 4, and the barrel body 32 is installed on the middle pipe 12. Further, a notch is provided on the middle pipe 12. The flocculant injection basket is located above the notch. The flocculant is sprayed into the pulp flowing in the feed pipe assembly 1 through the notch on the middle pipe 12 by the flocculant injection basket.

[0034] Further, please refer to Figure 1 As shown in the figure, in this embodiment, valves 25 are installed on the first branch pipe 22, the second branch pipe 23, and the third branch pipe 31. The conveyance of the flocculant in the first branch pipe 22, the second branch pipe 23, and the third branch pipe 31 is controlled separately through the valves 25. Additionally, during replacement and maintenance, they can be disassembled and assembled individually without the need for overall disassembly or shutdown.

[0035] Further, please refer to Figure 3 As shown in the figure, in this embodiment, the flocculant injection basket includes a housing 33. A plurality of spray holes 34 are evenly provided on the side surface and the bottom surface of the housing 33. The flocculant is sprayed through the evenly provided spray holes 34, which can dilute the flocculant and make the flocculant mix more evenly into the pulp flowing in the feed pipe assembly 1.

[0036] Please refer to Figure 1 As shown in the figure, in this embodiment, a partition 41 is provided on the upper section of the inner wall of the steady-flow distribution cylinder 4. The flocculant injection pipe is located between the partition 41 and the inner wall of the steady-flow distribution cylinder 4. The partition 41 plays a role in protecting the flocculant injection pipe and ensuring that the flocculant injection pipe is not blocked by the splashed pulp particles.

[0037] Please refer to Figure 4 As shown in the figure, an embodiment of the present invention further provides a thickener. The thickener includes a cylindrical silo 5. A bridging 6 is horizontally erected on the top surface of the cylindrical silo 5. The steady-flow distribution cylinder 4 is arranged below the middle of the bridging 6. A hydraulic motor reducer 7 is arranged in the middle of the top surface of the bridging 6. The output end of the hydraulic motor reducer 7 is fixedly connected to a rotating rod 8. The rotating rod 8 penetrates through the steady-flow distribution cylinder 4. The hydraulic motor reducer 7 is used to drive the rotating rod 8 to rotate, and the rotating rod 8 synchronously drives the steady-flow distribution cylinder 4 and the stirring device in the thickener to operate, so as to fully mix the flocculant and the pulp in the steady-flow distribution cylinder 4 and the thickener.

[0038] When using the present invention:

[0039] The pulp flows through the feed pipe assembly 1 and is added into the steady-flow cloth cylinder 4. At the same time, the flocculant addition pipe assembly 2 adds flocculants into the self-dilution barrel assembly 3 and the steady-flow cloth cylinder 4 respectively, and the self-dilution barrel assembly 3 can control the amount of flocculant added into the feed pipe assembly 1 according to needs. Since the pulp in the feed pipe assembly 1 is always in a flowing state, the flocculant sprayed by the flocculant spraying flower basket can be evenly added to the pulp, so that before the pulp enters the steady-flow cloth cylinder 4, it has been fully mixed with part of the flocculant, reducing the energy required to ensure the full mixing of the flocculant and the pulp subsequently, that is, reducing the working intensity and service time of the stirring devices in the steady-flow cloth cylinder 4 and the thickener, thereby increasing their service life. While reducing energy consumption, the time required for pulp sedimentation and concentration is reduced, improving work efficiency.

[0040] While transporting the pulp into the steady-flow cloth cylinder 4 through the feed pipe assembly 1, flocculant is added into the steady-flow cloth cylinder 4 through the flocculant addition pipe assembly 2, making it easy for the flocculant to be quickly and evenly mixed with the pulp, avoiding the need to keep the stirring device inside the thickener running for a long time subsequently and greatly reducing energy consumption.

[0041] The above has elaborated in detail on the preferred embodiments of the present invention, and it cannot be considered as used to limit the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of application of the present invention should still fall within the scope covered by the patent of the present invention.

Claims

1. A thickener feed flocculation mechanism, characterized in that: The invention comprises a feed pipe assembly (1), a flocculant addition pipe assembly (2), a self-dilution barrel assembly (3) and a steady flow distribution barrel (4); the feed pipe assembly (1) is connected to the steady flow distribution barrel (4) and is used to transport slurry to the steady flow distribution barrel (4); the dilution barrel assembly is arranged on the feed pipe assembly (1); the flocculant addition pipe assembly (2) is respectively connected to the self-dilution barrel assembly (3) and the steady flow distribution barrel (4) and is used to add flocculant to the self-dilution barrel assembly (3) and the steady flow distribution barrel (4).

2. A thickener feed flocculation mechanism according to claim 1, characterized in that: The flocculant addition pipe assembly (2) comprises a flocculant main pipe (21), a first branch pipe (22), a second branch pipe (23) and a flocculant injection pipe (24); one end of the first branch pipe (22) and the second branch pipe (23) are respectively connected to the flocculant main pipe (21); the other ends of the first branch pipe (22) and the second branch pipe (23) are respectively connected to the flocculant injection pipe; the injection end of the flocculant injection pipe is located in the steady flow distribution cylinder (4).

3. A thickener feed flocculation mechanism according to claim 2, characterized in that: The self-dilution barrel assembly (3) comprises a third branch pipe (31), a barrel body (32) and a flocculant injection basket, one end of the third branch pipe (31) is connected to the flocculant main pipe (21), and the other end of the third branch pipe (31) is connected to the flocculant injection basket, the flocculant injection basket is located in the barrel body (32), and the barrel body (32) is installed on the feed pipe assembly (1).

4. A thickener feed flocculation mechanism according to claim 3, characterized in that: The feed pipe assembly (1) comprises a head pipe (11), a middle pipe (12) and a tail pipe (13), wherein the head pipe (11), the middle pipe (12) and the tail pipe (13) are fixedly connected in this manner, the tail pipe (13) is connected to the flow-stabilizing distribution barrel (4), and the barrel body (32) is installed on the middle pipe (12).

5. A thickener feed flocculation mechanism according to claim 4, characterized in that: The middle pipe (12) is provided with a notch, and the flocculant injection basket is located above the notch.

6. A thickener feed flocculation mechanism according to claim 3, characterized in that: Valves (25) are installed on the first pipeline (22), the second pipeline (23) and the third pipeline (31).

7. A thickener feed flocculation mechanism according to claim 3, characterized in that: The coagulant spray basket comprises a shell (33), and a plurality of spray holes (34) are evenly arranged on the side and bottom surfaces of the shell (33).

8. A thickener feed flocculation mechanism according to claim 2, characterized in that: A partition (41) is provided on the upper section of the inner wall of the flow-stabilizing material distributing cylinder (4), and the flocculant injection pipe is located between the partition (41) and the inner wall of the flow-stabilizing material distributing cylinder (4).

9. A thickener, characterized in that: The thickener comprises a thickener feed flocculation mechanism as described in any one of claims 1-8.

10. A thickener according to claim 9, characterized in that: The thickener comprises a cylindrical silo (5), a bridge (6) is horizontally arranged on the top surface of the cylindrical silo (5), the flow-stabilizing material distribution cylinder (4) is arranged below the middle of the bridge (6), a hydraulic motor reducer (7) is arranged in the middle of the top surface of the bridge, the output end of the hydraulic motor reducer (7) is fixedly connected to a rotating rod (8), and the rotating rod (8) passes through the flow-stabilizing material distribution cylinder (4).

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