Defoaming device of tailing thickener

Abstract

The utility model relates to the field of mining equipment, in particular to a defoaming device of a tailing thickener, which comprises an annular main pipeline fixedly mounted at the top of the thickener, a plurality of water outlet branch pipes uniformly arranged at intervals in the circumferential direction are arranged on the inner side of the annular main pipeline, and nozzles are fixedly mounted on the water outlet branch pipes; the device further comprises a mounting plate located above the thickener and driven by a power device to ascend and descend, a vertically-extending mounting shaft is rotationally mounted on the mounting plate, a mounting frame is fixedly mounted at the lower end of the mounting shaft, a plurality of barbed nails which are evenly distributed are fixedly mounted at the bottom of the mounting frame, and the barbed nails move up and down in a reciprocating mode to puncture bubbles located on the inner sides of the multiple sprayers. When the spray head sprays a defoaming agent to impact bubbles, the mounting plate is driven to move up and down through reciprocating telescopic motion of the air cylinder, the mounting plate drives the mounting frame to move up and down, and the mounting frame drives the barbed nails to puncture the bubbles.

Description

Technical Field

[0001] This utility model relates to the field of mining equipment, specifically to a defoaming device for a tailings thickener. Background Technology

[0002] A thickener is a continuously operating thickening and clarification device, mainly used for dewatering concentrate and tailings slurry in wet mineral processing. It separates materials based on the principle of gravity settling of particles. During the operation of the thickener, a large amount of foam will appear on the liquid surface. Since solid particles will adhere to the bubbles, the settling speed of the particles will be slowed down, which will greatly reduce the efficiency of the thickener. Therefore, it is necessary to install a defoaming device at the top of the thickener to remove the bubbles.

[0003] Existing defoaming devices, such as the utility model patent with application number 202021587354.8, disclose a defoaming device for a thickener, including a defoaming tube in the shape of a ring. The defoaming tube is provided with several nozzles distributed along the circumference of the defoaming tube. Defoaming water is delivered to each nozzle through the defoaming tube. Any nozzle sprays defoaming water toward the center of the thickener to eliminate foam.

[0004] Existing defoaming devices only defoam by spraying defoaming water, which is a single defoaming method and the defoaming effect is not ideal, and needs to be improved. Utility Model Content

[0005] The purpose of this invention is to provide a defoaming device for a tailings thickener, which uses sprayed defoaming water in conjunction with spikes to defoam, thereby solving the defects mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A defoaming device for a tailings thickener includes an annular main pipe fixedly installed on the top of the thickener. Multiple circumferentially spaced branch pipes are provided on the inner side of the annular main pipe, and nozzles are fixedly installed on the branch pipes. The device also includes a mounting plate located above the thickener, driven and lifted by a power device. A vertically extending mounting shaft is rotatably mounted on the mounting plate. A mounting frame is fixedly installed at the lower end of the mounting shaft. Multiple evenly distributed spikes are fixedly installed at the bottom of the mounting frame. The spikes reciprocate up and down to puncture air bubbles located inside the multiple nozzles.

[0008] As a preferred technical solution, the axis of the outlet branch pipe is provided with an angle of 15° to 75° with the tangent of the annular main pipe.

[0009] Preferably, the water outlet branch pipe is arranged to have an angle of 15-75 degrees between the axis of the water outlet branch pipe and the tangent of the annular main pipe.

[0010] Preferably, the water outlet branch pipe is provided with a control ball valve.

[0011] Preferably, the mounting shaft is fixedly provided with a coaxial cylindrical cam, the cylindrical cam is provided with a curved groove on the outer circumferential surface, the top of the thickener is fixedly provided with a bracket, the bracket is provided with a roller matched with the curved groove, and the roller acts on the curved groove and drives the cylindrical cam to rotate when the cylindrical cam moves vertically.

[0012] Compared with the prior art, the utility model has the advantages of:

[0013] 1. The water outlet branch pipe is arranged to have an angle of 15-75 degrees between the axis of the water outlet branch pipe and the tangent of the annular main pipe, so that when the spray head sprays the defoaming agent into the thickener, the impact of the defoaming agent forms a cyclone in the foam in the thickener, the foam is aggregated to the center of the thickener, the breaking and dissipation of the foam are accelerated, and the defoaming efficiency is improved.

[0014] 2. When the spray head sprays the defoaming agent to impact the bubbles, the mounting plate is moved up and down by the reciprocating extension and retraction of the air cylinder, the mounting frame is moved up and down by the mounting plate, and the mounting frame is used to pierce the bubbles by the spikes, so that the defoaming efficiency is further improved.

[0015] 3. When the mounting frame moves up and down, the roller acts on the curved groove of the cylindrical cam to drive the mounting frame to rotate, and the mounting frame is used to efficiently break the bubbles in the process of rotation, so that the defoaming efficiency is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor.

[0017] Fig. 1 It is a structural schematic view of the embodiment of the utility model;

[0018] Fig. 2 It is a structural schematic view of the annular main pipe of the embodiment of the utility model;

[0019] Fig. 3 It is a structural schematic view of the mounting frame of the embodiment of the utility model.

[0020] In the diagram: 1-Thickener; 2-Annular main pipe; 3-Overflow trough; 4-Outlet branch pipe; 5-Nozzle; 6-Mounting plate; 7-Bracket; 8-Cylinder; 9-Mounting shaft; 10-Mounting bracket; 11-Horizontal plate; 12-Annular plate; 13-Barbed nail; 14-Control ball valve; 15-Cylindrical cam; 16-Curved groove; 17-Support plate; 18-Roller; 19-Inlet pipe. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figs. 1 to 3 As shown, a defoaming device for a tailings thickener includes an annular main pipe 2 fixedly installed on the top of the thickener 1. An annular overflow trough 3 is provided on the outer edge of the upper end of the thickener 1. The annular main pipe 2 is fixedly installed on the inner wall of the overflow trough 3 on the side away from the thickener 1. An inlet pipe 19 is also connected to the annular main pipe 2. The inlet pipe 19 extends to the outside of the overflow trough 3 and is connected to a defoaming agent supply mechanism for conveying defoaming agent to the annular main pipe 2.

[0023] like Fig. 2 As shown, the inner side of the annular main pipe 2 is provided with multiple circumferentially evenly spaced branch pipes 4. One end of the branch pipe 4 is welded to the annular main pipe 2 and connected to it. The other end of the branch pipe 4 is fixed with a nozzle 5 by bolts, through which defoamer is sprayed into the thickener 1. In this embodiment, the axis of the branch pipe 4 is at an angle of 15° to 75° with the tangent of the annular main pipe 2, and the end of the branch pipe 4 away from the annular main pipe 2 is lower than the end of the branch pipe 4 close to the annular main pipe 2. The axis of the branch pipe 4 is at an angle of 15° with the horizontal plane. Thus, when the nozzle 5 sprays defoamer into the thickener 1, the impact of the defoamer causes the foam in the thickener 1 to form a swirling flow, causing the foam to aggregate towards the center of the thickener 1, accelerating the bursting and dissipation of the foam.

[0024] The installation plate 6 is driven to lift by a power device, the upper portion of the thickener 1 is provided with a support 7, the support 7 is provided with a crossbeam and downward extending vertical arms fixedly installed at both ends of the crossbeam, the lower ends of the vertical arms are fixedly installed on the outer wall of the overflow launder 3 by bolts; the power device is specifically a cylinder 8, the cylinder body of the cylinder 8 is fixedly installed on the crossbeam of the support 7 by bolts, the piston rod of the cylinder 8 penetrates downward through the crossbeam and is fixedly connected with the installation plate 6 by bolts, the installation plate 6 is driven to lift by the extension and contraction of the cylinder 8.

[0025] In the embodiment, as shown in Fig. 3 The installation plate 6 is driven to lift by a power device, the upper portion of the thickener 1 is provided with a support 7, the support 7 is provided with a crossbeam and downward extending vertical arms fixedly installed at both ends of the crossbeam, the lower ends of the vertical arms are fixedly installed on the outer wall of the overflow launder 3 by bolts; the power device is specifically a cylinder 8, the cylinder body of the cylinder 8 is fixedly installed on the crossbeam of the support 7 by bolts, the piston rod of the cylinder 8 penetrates downward through the crossbeam and is fixedly connected with the installation plate 6 by bolts, the installation plate 6 is driven to lift by the extension and contraction of the cylinder 8.

[0026] At the same time when the spray head 5 sprays the defoaming agent to impact the bubbles, the foam forming spiral flow converges to the bottom of the installation rack 10, the installation plate 6 is driven to move up and down by the reciprocating extension and contraction of the cylinder 8, the installation rack 10 is driven to move up and down by the installation plate 6, and the installation rack 10 drives the spikes 13 to pierce the bubbles.

[0027] Each water outlet branch pipe 4 is respectively provided with a control ball valve 14, so as to adjust the flow of the water outlet branch pipe 4 according to the amount of foam.

[0028] The upper end of the installation shaft 9 is fixedly installed with a coaxially arranged cylindrical cam 15, the outer circumferential surface of the cylindrical cam 15 is respectively provided with curve grooves 16 at opposite sides, the curve grooves 16 are spirally arranged around the outer circumferential surface of the cylindrical cam 15, the bottom of the crossbeam of the support 7 is respectively fixedly installed with support plates 17 at left and right sides of the cylindrical cam 15, the inner sides of the two support plates 17 are respectively rotatably installed with rollers 18, the axial direction of the rollers 18 extends horizontally, the two rollers 18 respectively extend into the curve grooves 16 at the corresponding side, when the installation plate 6 and the installation rack 10 are driven to move up and down by the cylinder 8, the installation rack 10 drives the cylindrical cam 15 to move up and down, the rollers 18 act on the curve grooves 16 of the cylindrical cam 15 to drive the cylindrical cam 15 to rotate, and then the cylindrical cam 15 drives the installation shaft 9 and the installation rack 10 to rotate, so that the installation rack 10 rotates while moving up and down, and the spikes 13 are efficiently pierced in the process of rotating of the installation rack 10.

[0029] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only preferred examples of the present application and are not intended to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A defoaming device for a tailings thickener, characterised in that: The application relates to a water spraying device for a thickener, which comprises a ring-shaped main pipeline fixedly installed on the top of the thickener, a plurality of water outlet branch pipes circumferentially and uniformly spaced on the inner side of the ring-shaped main pipeline, and a plurality of nozzles fixedly installed on the water outlet branch pipes; the device further comprises an installation plate driven to lift by a power device above the thickener, a vertically extending installation shaft rotatably installed on the installation plate, an installation frame fixedly installed on the lower end of the installation shaft, and a plurality of evenly distributed spikes fixedly installed on the bottom of the installation frame, wherein the spikes reciprocate up and down to break the bubbles located on the inner side of the nozzles.

2. A defoaming device for a tailings thickener as claimed in claim 1, characterised in that: The angle between the axis of the water outlet branch pipe and the tangent of the ring-shaped main pipeline is 15-75 degrees.

3. A defoaming device for a tailings thickener as claimed in claim 1, characterised in that: The end of the water outlet branch pipe far from the ring-shaped main pipeline is lower than the end of the water outlet branch pipe close to the ring-shaped main pipeline, and the angle between the axis of the water outlet branch pipe and the horizontal plane is 15 degrees.

4. A defoaming device for a tailings thickener as claimed in claim 1, characterised in that: The water outlet branch pipe is provided with a control ball valve.

5. A defoaming device for a tailings thickener as claimed in claim 1, characterised in that: A cylindrical cam coaxially arranged is fixedly installed on the installation shaft, a curved groove is arranged on the outer circumferential surface of the cylindrical cam, a support is fixedly installed on the top of the thickener, a roller matched with the curved groove is installed on the support, and the roller acts on the curved groove and drives the cylindrical cam to rotate when the cylindrical cam moves vertically.

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