Tailings sand gravity synergistic pre-homogenization system

Abstract

The utility model provides a tailing sand gravity coordination pre -homogenization system relates to mine filling technical field. The pre -homogenization system includes storage bin group and mixes hopper. The storage bin group contains at least three parallel warehouses, and each warehouse is equipped with independent feed inlet, bottom double curvature conical discharge port and gate; The curvature radius of the steep section of the discharge port lower part is less than 50% of the curvature radius of the upper gentle slope section, and the included angle between the generatrix of the lower steep section and the horizontal plane is greater than or equal to 75 degrees. The mixing hopper is located below the storage bin group, and the center axes of all discharge ports are located on the distribution circle with the center of the mixing hopper as the center; The inner wall of the mixing hopper is provided with guide plates, each guide plate is inclined downward along the center line and is symmetrical to both sides, and the center line is the highest point, and the inclination angle is 30-35 degrees. When the device works, multiple warehouses discharge synchronously, the material accelerates down through the discharge port, is guided by the guide plate, and is mixed under the action of gravity. The system eliminates time period fluctuation through multiple warehouse storage, realizes external power homogenization by using gravity cooperation and guide plate structure, and effectively prevents arch blockage by double curvature discharge port design. The structure is simple and reliable.

Description

Technical Field

[0001] This utility model relates to the field of mine backfilling technology, and in particular to a gravity-coordinated pre-homogenization system for tailings sand. Background Technology

[0002] Existing tailings homogenization technologies have significant shortcomings: the single-bin continuous operation mode cannot eliminate the changes in tailings composition (such as particle size and concentration) over time caused by fluctuations in mine production; the energy consumption of electrically driven mixing devices is high. In addition, there is a risk of tailings forming material arches and causing blockages during the unloading process. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this utility model provides a tailings pre-homogenization system based on the synergistic effect of multi-storage and gravity, aiming to solve the problem of time-varying composition of tailings without continuous external stirring energy consumption, and to reduce the risk of unloading blockage through structural optimization.

[0004] The present invention is implemented as follows: a tailings sand gravity-coordinated pre-homogenization system includes a storage silo group and a mixing funnel; the storage silo group includes at least three storage silos arranged in parallel, each storage silo has an independent inlet at the top and a double-curvature conical discharge port at the bottom; a gate is provided below each discharge port; each discharge port has an upper gentle slope section and a lower steep section, the radius of curvature R2 of the lower steep section is ≤ 50% of the radius of curvature R1 of the upper gentle slope section; the mixing funnel is located directly below the storage silo group and is connected to each storage silo through the gate; a guide plate is installed on the inner wall of the mixing funnel, the guide plate is symmetrically inclined downwards on both sides along the centerline, with the centerline being the highest point and the inclination angle being 30°-35°; a mixed material outlet is provided at the bottom of the mixing funnel. The system works as follows: tailings produced at different times are diverted to corresponding storage bins through the feed inlet. When unloading is required, all gates are opened simultaneously. Under the action of gravity, the material accelerates down through the double-curvature discharge port with anti-arch design and enters the mixing funnel. The falling material flow impacts the guide plate. Under the diversion and guidance of the guide plate, the trajectory of the material flow from different discharge ports changes and they intersect and penetrate each other to achieve full mixing. The mixed material falls to the conveying equipment through the mixing outlet at the bottom of the mixing funnel and is transferred to the subsequent process section.

[0005] Furthermore, the height of the lower steep section of the discharge port accounts for 1 / 3 to 1 / 2 of the total height of the discharge port, and the angle between the generatrix of the lower steep section and the horizontal plane is ≥75°.

[0006] Furthermore, the gates located below the discharge ports of each storage silo can be configured as synchronous switches or individual switches; when it is necessary to mix the materials from all storage silos together, all gates are opened synchronously; when it is necessary to mix the materials from some storage silos, the corresponding gates are opened synchronously.

[0007] Furthermore, there are three storage bins, and the centers of the discharge ports of the three storage bins are distributed in an equilateral triangle.

[0008] Furthermore, the guide plate is a wear-resistant steel plate component with a polished surface.

[0009] Furthermore, the guide plate is detachably installed on the inner wall of the mixing funnel for easy maintenance.

[0010] Furthermore, the guide plate is divided into upper and lower layers, which are staggered to further improve the mixing effect.

[0011] This utility model has the following beneficial effects: (1) Time-sequential storage and synchronous unloading: Different tailings sand is stored in parallel storage bins in different time periods, and the material is released in a concentrated manner by opening the gate synchronously. (2) Gravity-coordinated mixing structure: The guide plate at a specific angle guides the falling material flow from different unloading ports, so that they converge and penetrate each other under the action of gravity, and achieve efficient mixing. (3) Anti-arching and clogging design of unloading port: The double curvature structure (R2≤0.5R1, α≥75°) can destroy the arching conditions of the material, ensure smooth unloading, and significantly reduce the risk of blockage at the unloading port. (4) Symmetrical focusing layout: The unloading ports are arranged along the distribution circumference, so that the material flow naturally converges in the central area of ​​the mixing funnel, enhances the mixing effect and makes the wall surface uniformly stressed. (5) Powerless efficient homogenization: Multi-bin storage eliminates the time difference, and the guide plate guides gravity mixing, eliminating the need for stirring energy consumption. (6) The structure is robust and durable, environmentally friendly, and easy to operate: the uniformly stressed mixing funnel wall, wear-resistant guide plate, no moving parts, long service life and low maintenance requirements; the fully sealed structure effectively suppresses dust emission; the gate is synchronously controlled, and the process is simple and reliable. Attached Figure Description

[0012] Figure 1 This is an overall layout diagram of the tailings sand gravity-coordinated pre-homogenization system of this utility model.

[0013] Figure 2 This is a partial diagram showing the structural arrangement of the guide vanes within the mixing funnel.

[0014] Figure 3 This is a top view showing the distribution of the unloading ports of the three storage silos.

[0015] Figure 4 This is a top view showing the positional relationship between the discharge port and the guide plate.

[0016] Among them, 1. Storage silo; 101. Feed inlet; 102. Discharge outlet; 1021. Upper gentle slope section; 1022. Lower steep section; 2. Mixing funnel; 201. Guide plate; 202. Mixed material outlet; 3. Gate. Detailed Implementation

[0017] The following is in conjunction with the appendix Figure 1-4 The specific embodiments of this utility model are described in detail below, but it should be understood that the scope of protection of this utility model is not limited to the specific embodiments.

[0018] like Figures 1-4 As shown, a gravity-coordinated pre-homogenization system for tailings includes a storage silo group and a mixing funnel 2. The storage silo group comprises at least three storage silos 1 arranged in parallel. Each storage silo 1 has an independent inlet 101 at its top and a double-curvature conical discharge port 102 at its bottom. A gate 3 is provided below each discharge port 102. Each discharge port 102 has an upper gentle slope section 1021 and a lower steep section 1022, wherein the radius of curvature R2 of the lower steep section 1022 is... The curvature radius R1 of the upper gentle slope section 1021 is ≤50%; the mixing funnel 2 is located directly below the storage silo group and is connected to each storage silo 1 through the gate 3; the inner wall of the mixing funnel 2 is equipped with a guide plate 201, each guide plate 201 is inclined downwards to both sides along the center line, and the center line is the highest point, with an inclination angle of 30°-35°; the bottom of the mixing funnel 2 is provided with a mixture outlet 202.

[0019] The working principle of this system is as follows: tailings produced at different times are diverted to the corresponding storage bins 1 through the feed inlet 101. When unloading is required, all gates 3 are opened simultaneously. Under the action of gravity, the material accelerates down through the double-curvature discharge port 102 with anti-arching design and enters the mixing funnel 2. The falling material flow impacts the guide plate 201. Under the diversion and guidance of the guide plate 201, the trajectory of the material flow from different discharge ports 102 changes and they intersect and penetrate each other to achieve full mixing. The mixed material falls to the conveying equipment through the mixing outlet 202 at the bottom of the mixing funnel 2 and is transferred to the subsequent process section.

[0020] Based on the above embodiments, the height of the lower steep section 1022 of the discharge port 102 accounts for 1 / 3 to 1 / 2 of the total height of the discharge port 102, and the angle α between the generatrix of the lower steep section 1022 and the horizontal plane is ≥75°.

[0021] Based on the above implementation method, the gate 3 provided below the discharge port 102 of each storage silo 1 can be configured as a synchronous switch or an independent switch. When all gates 3 are opened synchronously, the materials in all storage silos 1 fall into the mixing funnel together for mixing; when only some of the materials in the storage silos 1 need to be mixed, the corresponding gates 3 can be opened synchronously.

[0022] Furthermore, such as Figure 3 As shown, there are three storage bins 1, and the centers of the discharge ports 102 of the three storage bins 1 are distributed in an equilateral triangle.

[0023] Furthermore, the guide plate 201 is a wear-resistant steel plate component with a polished surface.

[0024] Furthermore, the guide plate 201 is detachably installed on the inner wall of the mixing funnel 2.

[0025] Furthermore, the guide plate 201 is divided into upper and lower layers, which are staggered to further improve the mixing effect.

Claims

1. A gravity-assisted pre-homogenization system for tailings sand, characterized in that, The system includes a storage silo group and a mixing funnel. The storage silo group comprises at least three storage silos arranged in parallel. Each storage silo has an independent inlet at its top and a double-curvature conical discharge port at its bottom. A gate is provided below each discharge port. Each discharge port has an upper gentle slope section and a lower steep section, wherein the radius of curvature R2 of the lower steep section is ≤ 50% of the radius of curvature R1 of the upper gentle slope section. The mixing funnel is located directly below the storage silo group and is connected to each storage silo through the gate. Multiple guide plates are installed on the inner wall of the mixing funnel. Each guide plate is symmetrically inclined downwards on both sides along its midline, with the midline being the highest point and the inclination angle being 30°-35°. A mixed material outlet is provided at the bottom of the mixing funnel.

2. The tailings sand gravity-assisted pre-homogenization system according to claim 1, characterized in that, The height of the lower steep section of the discharge port accounts for 1 / 3 to 1 / 2 of the total height of the discharge port, and the angle between the generatrix of the lower steep section and the horizontal plane is ≥75°.

3. The tailings sand gravity-assisted pre-homogenization system according to claim 1, characterized in that, The gates located below the discharge ports of each storage silo can be configured as synchronous switches or individual switches.

4. The tailings sand gravity-assisted pre-homogenization system according to claim 1, characterized in that, There are three storage bins, and the centers of the discharge ports of the three storage bins are distributed in an equilateral triangle.

5. The tailings sand gravity-assisted pre-homogenization system according to claim 1, characterized in that, The guide plate is a wear-resistant steel plate component with a polished surface.

6. The tailings sand gravity-assisted pre-homogenization system according to claim 1, characterized in that, The guide plate is detachably installed on the inner wall of the mixing funnel.

7. The tailings sand gravity-assisted pre-homogenization system according to claim 1, characterized in that, The guide plate consists of two layers, upper and lower, arranged alternately.

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