Stirring machine for stirring cemented filling tailing slurry of metal and non-metal mine

Abstract

The utility model relates to the technical field of mining mechanical equipment, and discloses a stirrer for stirring cemented filling tailing slurry of metal and non-metal mines, which comprises a stirring tank, a plurality of groups of turbulent flow bars arranged on the inner side wall of the stirring tank, a stirring vertical shaft arranged in the center of the interior of the stirring tank, and a stirring chain arranged at the middle lower part of the stirring vertical shaft, stirring blades are arranged at the bottom of the stirring vertical shaft; and a filter screen is arranged on the stirring tank between the stirring chain and the stirring blades. According to the utility model, the tailing slurry can be efficiently stirred, the conditions of blockage, breakage and the like can be avoided, and the stirring effect and efficiency of the filling body are effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of mining machinery and equipment technology, and in particular to a mixer for mixing tailings slurry used in cemented backfilling of metal and non-metal mines. Background Technology

[0002] As the scale of mining operations gradually expands, the safety hazards caused by goaf areas have become an urgent problem for mines to solve. At the same time, the amount of tailings discharged from mines is increasing year by year, while the capacity of tailings ponds is insufficient to meet the requirements of future production expansion. In response, the mine design uses tailings to fill the goaf areas, so that the tailings slurry is concentrated to a high concentration and then transported to the mixer through pipelines. At the same time, cement is also fed into the mixer through the feeding equipment. The mixer mixes and stirs the raw materials to prepare a cemented filling material slurry. After discharge, the slurry is transported and stockpiled to the goaf areas for filling.

[0003] Currently, existing tailings slurry mixers for cemented backfilling in mines generally employ blade-shaped or fin-shaped agitators, primarily employing rigid agitation. For example, Chinese invention patent number ZL201510113400.8 discloses a dust-proof tailings cemented backfilling mixer, comprising a mixing drum, a tailings slurry feed hopper, and a cement feed pipe. The mixing drum consists of a mixing cylinder, a mixing shaft, mixing blades, and a reduction motor. A fixed frame is provided at the top of the mixing cylinder. The reduction motor is fixed in the middle of the fixed frame, connected to the mixing shaft, and drives the mixing shaft to rotate. Mixing blades are connected to the mixing shaft.

[0004] The existing technology has at least the following problems: because the filling slurry contains impurities such as iron, stones and clumps of slurry, the existing mixing machinery is prone to clogging, which can easily lead to breakage of gears and blades. This results in insufficient mixing of the filling material, affecting the concentration and quality of the filling material. Furthermore, stopping the machine to deal with clogging and breakage will waste a lot of time and increase the cost of use. Utility Model Content

[0005] This invention addresses the shortcomings of existing technologies by developing a mixer for mixing tailings slurry in cemented backfilling of metal and non-metal mines. This invention can efficiently mix tailings slurry and avoid blockages and breakages, effectively improving the mixing effect and efficiency of the backfill material.

[0006] The technical solution of this utility model to solve the technical problem is as follows: a mixer for mixing tailings slurry for cemented backfilling in metal and non-metal mines, including a mixing tank, a number of turbulence bars are provided on the inner side wall of the mixing tank, a stirring vertical shaft is provided in the center of the mixing tank, a stirring chain is provided in the middle and lower part of the stirring vertical shaft, stirring blades are provided at the bottom of the stirring vertical shaft, and a filter screen is provided on the mixing tank between the stirring chain and the stirring blades.

[0007] As an optimization, the turbulence bar is pointed towards the vertical axis of the agitation. This enhances turbulence and accelerates the breaking up of slurry agglomerates.

[0008] As an optimization, a supporting angle steel is provided at the bottom of the filter screen. By setting the supporting angle steel, the filter screen can be supported and prevented from breaking during filtration.

[0009] As an optimization, the top of the mixing tank is equipped with a feed inlet, and the bottom of the feed inlet is equipped with a baffle. The feed inlet facilitates the feeding of tailings, and the baffle prevents slurry from splashing out of the mixing tank during mixing.

[0010] As an optimization, a geared motor is installed at the top center of the mixing tank, and the output end of the geared motor is connected to the top of the vertical mixing shaft. By setting the geared motor, the vertical mixing shaft can be driven to rotate, allowing for low-speed start-up and high-speed operation, reducing starting resistance and increasing the breaking effect on slurry clumps.

[0011] As an optimization, the bottom of the mixing tank is equipped with a base and a discharge pipe, with a valve on the discharge pipe. The base provides stable support for the mixing tank, while the discharge pipe and valve facilitate material discharge.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] By incorporating a mixing tank, the tailings slurry can be contained and mixed. Turbulence bars create turbulence and accelerate the breaking up of slurry clumps. A vertical mixing shaft and chain provide flexible mixing, preventing breakage when impacting rocks. A filter screen retains slurry clumps within the mixing tank for continued breaking up, preventing blockages and ensuring sufficient mixing of the filling material, thus maintaining its concentration and quality. Mixing blades accelerate mixing, ensuring thorough mixing of tailings and coagulant, resolving segregation issues, maximizing the coagulant's binding effect, and accelerating material discharge. This invention efficiently mixes tailings slurry while preventing blockages and breakage, effectively improving the mixing effect and efficiency of the filling material. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present utility model.

[0015] In the diagram: 1. Mixing tank; 2. Turbulence bar; 3. Vertical mixing shaft; 4. Mixing chain; 5. Filter screen; 6. Mixing blades; 7. Supporting angle steel; 8. Feed port; 9. Baffle; 10. Gear motor; 11. Base; 12. Discharge pipe. Detailed Implementation

[0016] To clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0017] Example 1

[0018] Figure 1 As shown in the figure, in one embodiment of this utility model, a mixer for mixing tailings slurry for cemented backfilling in metal and non-metal mines includes a mixing tank 1. Several sets of turbulence bars 2 are provided on the inner side wall of the mixing tank 1. A stirring vertical shaft 3 is provided in the center of the mixing tank 1. A stirring chain 4 is provided in the lower middle part of the stirring vertical shaft 3. A stirring blade 6 is provided at the bottom of the stirring vertical shaft 3. A filter screen 5 is provided on the mixing tank 1 between the stirring chain 4 and the stirring blade 6.

[0019] The mixing tank 1 is designed to hold and mix the tailings slurry. The turbulence bar 2 creates turbulence and accelerates the breaking of slurry clumps. The mixing vertical shaft 3 and mixing chain 4 provide flexible mixing of the tailings slurry, preventing it from breaking easily when it hits rocks. The filter screen 5 keeps the slurry clumps in the mixing tank 1 for further crushing, preventing blockages and ensuring sufficient mixing of the filling material, thus avoiding affecting the concentration and quality of the filling material. The mixing blades 6 accelerate mixing, ensuring thorough mixing of the tailings and coagulant, solving the problem of segregation of the solidified material, fully utilizing the coagulant's solidification effect, and accelerating the feeding process.

[0020] like Figure 1 As shown, the turbulence bar 2 points towards the vertical stirring axis 3. This enhances the turbulence effect and accelerates the breaking up of slurry agglomerates.

[0021] like Figure 1 As shown, the bottom of the filter screen 5 is provided with a supporting angle steel 7. By providing the supporting angle steel 7, the filter screen 5 can be supported, preventing the filter screen 5 from breaking during filtration.

[0022] like Figure 1 As shown, the top of the mixing tank 1 is provided with a feed port 8, and the bottom of the feed port 8 is provided with a baffle 9, which is installed inside the mixing tank 1. By providing the feed port 8, it is convenient to feed tailings; by providing the baffle 9, it is possible to prevent the slurry from splashing out of the mixing tank 1 during mixing.

[0023] like Figure 1 As shown, a geared motor 10 is mounted on the top center of the mixing tank 1 via a support. The output end of the geared motor 10 is connected to the top of the mixing vertical shaft 3 via a coupling. By setting the geared motor 10, the mixing vertical shaft 3 can be driven to rotate, allowing for low-speed start-up and high-speed operation, reducing starting resistance and increasing the crushing effect on the slurry clumps.

[0024] like Figure 1As shown, the bottom of the mixing tank 1 is equipped with a base 11 and a discharge pipe 12. The discharge pipe 12 is equipped with a valve, which is a butterfly valve. By setting the base 11, the mixing tank 1 can be stably supported; by setting the discharge pipe 12 and the valve, the material can be discharged conveniently.

[0025] During use, tailings and cement enter the mixing tank 1 through the feed port 8. The operator starts the reduction motor 10. The reduction motor 10 starts at low speed to reduce starting resistance. After starting, it enters a high-speed running state, which can increase the crushing effect on the slurry clumps. The mixing chain 4, driven by the mixing vertical shaft 3, mixes and disperses the slurry and clumps above the filter screen 5 to prevent them from settling and clogging the filter screen 5. The rotating slurry clumps are accelerated to break and mix under the turbulent action of the turbulence bar 2. The mixing blades 6 further mix the slurry below the filter screen 5. When discharging, the valve on the discharge pipe 12 is opened, and the mixed filling material is discharged through the discharge pipe 12. The reduction motor 10 can be kept running during discharging, and the mixing blades 6 can press down to assist in the discharge of the filling material.

[0026] The descriptions of the orientation or relative positional relationships of the structure in this utility model, such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inner", and "outer", are based on the orientation or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the structure referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

Claims

1. A mixer for mixing cemented filling tailings slurry in a metal or non-metal mine, comprising a mixing tank (1), characterized in that: The inner wall of the mixing tank (1) is provided with several sets of turbulence rods (2), the center of the mixing tank (1) is provided with a stirring vertical shaft (3), the middle and lower part of the stirring vertical shaft (3) is provided with a stirring chain (4), the bottom of the stirring vertical shaft (3) is provided with stirring blades (6), and a filter screen (5) is provided on the mixing tank (1) between the stirring chain (4) and the stirring blades (6).

2. The agitator for agitating the cemented filling tailings slurry in the nonmetallic mine according to claim 1, characterized in that: The turbulence bar (2) points towards the vertical stirring axis (3).

3. The agitator for agitating the cemented filling tailings slurry in the nonmetallic mine according to claim 1, characterized in that: The bottom of the filter screen (5) is provided with a supporting angle steel (7).

4. The agitator for agitating the cemented filling tailings slurry in the nonmetallic mine according to claim 1, characterized in that: The top of the mixing tank (1) is provided with a feed port (8), and the bottom of the feed port (8) is provided with a baffle (9).

5. The agitator for agitating the cemented filling tailings slurry of the metal or nonmetal mine according to any one of claims 1 to 4, characterized in that: A geared motor (10) is provided at the top center of the mixing tank (1), and the output end of the geared motor (10) is connected to the top of the stirring vertical shaft (3).

6. The agitator for agitating the cemented filling tailings slurry in the nonmetallic mine according to claim 5, characterized in that: The bottom of the mixing tank (1) is provided with a base (11) and a discharge pipe (12), and a valve is provided on the discharge pipe (12).

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