Tailing paste filling and conveying device

Abstract

The utility model discloses a tailing paste filling and conveying device which comprises a chute, the bottom of the chute is provided with a feed opening, the lower portion of an inner cavity of the chute is provided with a filter grating, the filter grating divides the inner cavity of the chute into an upper portion and a lower portion, the feed opening is connected with a feed pipe vertically extending downwards, the tail end of the feed pipe is connected with a horizontal conveying pipe, and the horizontal conveying pipe is connected with the chute. The tail end of the horizontal material conveying pipe is connected with an inverted-U-shaped filling pipeline, the tail end of the inverted-U-shaped filling pipeline is connected with a vertical filling pipe, the highest point of the inverted-U-shaped filling pipeline is located below the filtering grating, the horizontal material conveying pipe is provided with a flow meter and a concentration meter, the highest point of the inverted-U-shaped filling pipeline is connected with a vertical breather pipe, and a ball valve is arranged on the breather pipe. According to the utility model, when the mass concentrations of the filled paste are different, the filling flow and concentration can be accurately monitored in real time, and the occurrence of guniting material returning is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to mine filling conveying equipment technical field, concretely relates to a tailings paste filling conveying device. BACKGROUND

[0002] In the mine filling process, due to the underground empty area structure and mining method demand, the weight ratio of tailings and cement in filling paste needs to be converted between 1:20 to 1:4. Under different proportions of tailings and cement, the fluidity and viscosity of the paste have a big difference. If the weight ratio of tailings and cement in filling paste is 1:20, the filling paste mass concentration is small, and when passing through the self-flow filling, the paste fluidity is strong, and the self-flow flow rate is fast due to the falling by gravity, the pipeline negative pressure is big, which leads to the failure of forming full pipe in the horizontal direction of chute discharge pipe, and the filling flow and concentration cannot be accurately monitored in real time. If the proportion of tailings and cement in filling paste is 1:4, the filling paste mass concentration is large, and when passing through the self-flow filling, the paste fluidity is poor, and the self-flow is slow, and the air inhaled by the paste into the pipeline is accumulated in the vertical section, which leads to the formation of air column in the vertical filling pipeline, and the pipe is blocked at irregular intervals, and even the shotcrete is returned.

[0003] Therefore, the prior art needs a tailings paste filling conveying device to ensure the accurate real-time monitoring of filling flow and concentration when the filling paste mass concentration is different, and to avoid the occurrence of shotcrete return. SUMMARY

[0004] The utility model discloses a kind of tailings paste filling conveying devices to overcome the deficiencies of prior art, to ensure the accurate real-time monitoring of filling flow and concentration when the filling paste mass concentration is different, and to avoid the occurrence of shotcrete return.

[0005] The utility model discloses a kind of tailings paste filling conveying devices, including chute, the bottom of the chute is provided with discharge port, the lower portion of the chute inner chamber is provided with filter grid, the filter grid separates the chute inner chamber into two parts, the discharge port is connected with vertically downward extending discharge pipe, the end of discharge pipe is connected with horizontal conveying pipe, the end of horizontal conveying pipe is connected with inverted U-shaped filling pipeline, the end of inverted U-shaped filling pipeline is connected with vertical filling pipe, the highest point of inverted U-shaped filling pipeline is located below the filter grid, horizontal conveying pipe is provided with flowmeter and concentration meter, the highest point of inverted U-shaped filling pipeline is connected with straight ventilation pipe, ball valve is provided on the ventilation pipe.

[0006] The filter grid is arranged obliquely.

[0007] The height difference between the highest point of inverted U-shaped filling pipeline and the lowest point of filter grid is 20 cm.

[0008] The lower part of the downcomer is provided with an air outlet pipe extending upwardly and obliquely, and the top of the air outlet pipe is provided with a sealing plug.

[0009] The utility model discloses a beneficial effect is: the utility model discloses can guarantee the real -time monitoring of filling flow and concentration when filling the paste quality concentration is different, and avoid the occurrence of shotcrete return material. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is the structure diagram of the utility model.

[0011] In the drawing: 1 - chute; 2 - filter grid; 3 - downcomer; 4 - air outlet pipe; 5 - sealing plug; 6 - horizontal conveying pipe; 7 - flowmeter; 8 - concentration meter; 9 - inverted U-shaped filling pipeline; 10 - air pipe; 11 - ball valve; 12 - vertical filling pipe. DETAILED DESCRIPTION

[0012] The utility model will be described in detail below in connection with the drawings.

[0013] As Figure 1 Shown, a tailings paste filling conveying device, including chute 1, the bottom of the chute 1 is provided with downcomer, and the lower part of the inner chamber of the chute 1 is provided with filter grid 2, the filter grid 2 divides the inner chamber of the chute 1 into two parts, and the downcomer is connected with the downcomer 3 extending vertically downward, and the tail end of the downcomer 3 is connected with horizontal conveying pipe 6, and the tail end of the horizontal conveying pipe 6 is connected with inverted U-shaped filling pipeline 9, and the tail end of the inverted U-shaped filling pipeline 9 is connected with vertical filling pipe 12, and the highest point of the inverted U-shaped filling pipeline 9 is located below the filter grid 2, and the horizontal conveying pipe 6 is provided with flowmeter 7 and concentration meter 8, and the highest point of the inverted U-shaped filling pipeline 9 is connected with the vertical air pipe 10, and the ball valve 11 is arranged on the air pipe 10.

[0014] In the utility model, the filter grid 2 is used for blocking the blocky material to enter the downcomer through the downcomer, and the highest point of the inverted U-shaped filling pipeline 9 is located below the filter grid 2, and the ground surface section pipeline pressure difference is formed, to ensure that the horizontal conveying pipe 6 keeps the positive pressure to push the paste, when the paste quality concentration is smaller and the fluidity is larger, the liquid level rises after the paste passes through the horizontal conveying pipe 6 and enters the inverted U-shaped filling pipeline, the falling kinetic energy of the paste when entering the chute 1 is reduced, thereby reducing the paste flow speed, so that the horizontal conveying pipe 6 keeps the full pipe state, thereby the flowmeter 7 and the concentration meter 8 can more accurately monitor the filling flow and concentration of the paste in real time.

[0015] The vent pipe 10 can avoid the air column in the vertical filling pipe 12 from causing the spouting back of the chute 1, the air in the vertical filling pipe 12 is discharged by the vent pipe 10, so that the paste flows smoothly. By controlling the opening of the ball valve 11, the flow rate of the paste can be controlled, when the opening of the ball valve 11 is increased, the negative pressure of the vertical filling pipe 12 is reduced, when the opening of the ball valve 11 is reduced, the negative pressure of the vertical section is increased, so that the flow rate of the paste under different proportions can be adjusted, and the horizontal section pipe is kept full.

[0016] Compared with the horizontally arranged filter grid 2, the filter grid 2 in the utility model is arranged obliquely, the oblique filter grid 2 can make the falling filling paste flow down faster, and is beneficial to filling.

[0017] The highest point of the inverted U-shaped filling pipe 9 is flush with the discharge port, in the chute 1, the filling paste is accumulated below the lowest point of the filter grid 2, and forms a height difference with the highest point of the inverted U-shaped filling pipe 9, so that the filling paste in the chute 1 pushes the paste in the pipe to flow, and forms initial kinetic energy. If the filling paste in the chute 1 is accumulated too high, the paste flow is not conducive. The height difference between the highest point of the inverted U-shaped filling pipe 9 and the lowest point of the filter grid 2 is 20 cm, the height difference makes the height of the filling paste accumulated in the chute 1 appropriate, and is conducive to the flow of the paste.

[0018] The lower part of the discharge pipe 3 is provided with an inclined upward extending air outlet pipe 4, the top of the air outlet pipe 4 is provided with a sealing plug 5. By opening the sealing plug 5, the air outlet pipe 4 can discharge the air in the discharge pipe 3, so that the filling paste moves downward more smoothly.

[0019] Finally, it should be noted that the above content is only used to explain the technical scheme of the utility model, and is not a limitation on the protection scope of the utility model, and the simple modification or equivalent replacement of the technical scheme of the utility model by the ordinary skilled in the art does not deviate from the essence and scope of the technical scheme of the utility model.

Claims

1. A tailings paste filling conveyor device comprising a chute, the chute having a discharge opening provided in a bottom portion thereof, characterised in that: The lower part of the chute inner cavity is provided with a filter grid, which separates the chute inner cavity into two parts, the lower part is connected with a vertical downward extending discharging pipe, the end of the discharging pipe is connected with a horizontal conveying pipe, the end of the horizontal conveying pipe is connected with an inverted U-shaped filling pipeline, the end of the inverted U-shaped filling pipeline is connected with a vertical filling pipe, the highest point of the inverted U-shaped filling pipeline is below the filter grid, the horizontal conveying pipe is provided with a flow meter and a concentration meter, the highest point of the inverted U-shaped filling pipeline is connected with a vertical air pipe, the air pipe is provided with a ball valve.

2. Tailings paste filling delivery device according to claim 1, characterized in that: The filter grid is arranged obliquely.

3. Tailings paste filling delivery apparatus according to claim 2, characterised in that: The height difference between the highest point of the inverted U-shaped filling pipeline and the lowest point of the filter grid is 20 cm.

4. Tailings paste filling delivery apparatus according to claim 3, characterised in that: The lower part of the discharging pipe is provided with an obliquely upward extending air outlet pipe, the top of the air outlet pipe is provided with a sealing plug.

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