CN220205433U - Tailing mortar conveying device for filling - Google Patents

Abstract

The utility model discloses a tailing mortar conveying device for filling, which comprises a buffer box arranged in a underground chamber and a return pipe with the outer end arranged at the top end of a filling area. The buffer box is connected with a control tube communicated with the buffer box. The outer end of the control pipe is communicated with the inner end of the return pipe; the control pipe is connected with an exhaust pipe with a first control valve. The control pipe is also provided with a second control valve which is positioned between the buffer tank and the exhaust pipe. After the liquid level in the buffer tank exceeds the pipe orifice of the discharge pipe, air in the buffer tank is discharged to the filling area through the return pipe along with the rising of the liquid level. The feeding speed of the buffer box is improved, and waste or pollution to the environment of the underground chamber is avoided. When the filling is close to the top, fluid carrying slurry or water discharged from the emptying pipe of the filling area is returned to the buffer tank by switching the control valve, so that waste and pollution to a filling route are avoided.

Description

Tailing mortar conveying device for filling

Technical Field

The utility model relates to a tailing mortar conveying device. Belonging to the technical field of tailing filling.

Background

The tailings are prepared into filling slurry and are conveyed to the underground goaf to form the filling body with certain strength, so that the accident rate of collapse of the underground goaf is reduced, the mining safety degree is improved, and the pollution problem of mineral dressing wastes to the environment can be effectively solved.

The utility model of China with publication number of CN212154858U discloses a sleeved underground conveying device for filling tailing paste, and an underground chamber is constructed at the lower part of a drilling hole, so that the underground pipeline is convenient to maintain, overhaul and disassemble; the underground cavity is internally provided with a slurry buffer cavity, the slurry buffer cavity is communicated with the bottom of the slurry filling pipe through a flange, and one side of the slurry buffer cavity is connected with the underground filling pipe through a flange. The slurry buffer cavity is of an enlarged cavity structure, when slurry is vertically poured in, the flow speed of the slurry buffer cavity is relatively large under the action of gravity, and the slurry buffer cavity can buffer the flow of the slurry, so that the flow speed of the slurry is slowed down, and the slurry is prevented from impacting and wearing the underground filling pipe.

The disclosed patent sets up the ground paste buffer chamber in the pit and is used for carrying the tailing ground paste, plays the beneficial effect to the protection filling pipeline is prevented from excessive impact, has reached the purpose that extension filling pipeline life, reduces the filling operation cost. But this patent suffers from the following drawbacks: in the initial stage that ground filling station ground paste gets into its buffer chamber, especially in the buffer chamber liquid level is higher than the discharge gate but not full stage, because buffer chamber is the airtight container and is difficult to empty, leads to the liquid level to rise slowly, and the feeding is difficult, influences filling operation efficiency.

On the other hand, as a tailing mortar conveying system of the prior art, air in a filling area (goaf) rises along with the liquid level during filling is generally discharged to the outside of a filling retaining wall through an evacuation pipe. When the filling is close to the roof, slurry or pipeline flushing water is discharged from the emptying pipe, so that the ground is polluted, and the difficulty in cleaning a filling inlet is increased.

Disclosure of Invention

The utility model aims to solve the technical problems of providing a tailing mortar conveying device for filling, which firstly solves the problem of emptying an underground slurry buffer container; secondly, the pollution caused by the outflow of slurry or pipeline cleaning water in the filling area through the emptying pipe is avoided.

The technical scheme adopted by the utility model is as follows:

the tailing mortar conveying device comprises a buffer box arranged in a downhole chamber, wherein the feeding end of the buffer box is connected with a conveying pipe, the discharging end of the buffer box is connected with a filling pipe, the tailing mortar conveying device further comprises a return pipe, the outer end of the return pipe is arranged at the top end of the filling area, and the inner end of the return pipe is positioned in the downhole chamber; the top side of the buffer box is connected with a control pipe which runs in the horizontal direction and is communicated with the buffer box; the outer end of the control pipe is communicated with the inner end of the return pipe; the control pipe is connected with an exhaust pipe which is longitudinally arranged and provided with a first control valve, and the exhaust end of the exhaust pipe is positioned at the top end of the exhaust pipe; and a second control valve is arranged on the control pipe and is positioned between the buffer tank and the exhaust pipe.

Preferably, the outer end of the control tube is communicated with the inner end of the return tube through a longitudinally arranged observation tube; the viewing tube is a transparent tube.

The beneficial effects of the utility model are as follows:

the first, the utility model connects the exhaust pipe of the buffer box with the emptying pipe of the filling area, after the liquid level in the buffer box exceeds the pipe orifice of the discharging pipe, the air in the buffer box is discharged to the filling area through the reflux pipe along with the rising of the liquid level. On the one hand, the feeding speed of the buffer tank is improved, and on the other hand, slurry carried by air in the exhaust pipe is sent to the filling area, so that waste or pollution to the environment of the underground chamber is avoided. In the filling process, air rising along with the liquid level in the filling area is discharged through the exhaust pipe, so that the tailing slurry can enter the goaf rapidly. When the filling is close to the top, fluid carrying slurry or water discharged from the emptying pipe of the filling area is returned to the buffer tank by switching the control valve, so that waste and pollution to a filling route are avoided.

In the second and the optimizing technical proposal of the utility model, an observation tube is arranged in the underground chamber. The method is favorable for observing and judging the roof-connecting progress of the filling area and the pipeline cleaning condition in the chamber.

Drawings

Fig. 1 is a schematic structural view of an embodiment of the present utility model.

Wherein, 1, a conveying pipe, 2, a downhole chamber, 3, a buffer tank, 4, a filling pipe, 5 and a return pipe, 6, observation pipe, 7, control pipe, 8, blast pipe, 9, first control valve, 10, second control valve.

Detailed Description

The utility model is further described below with reference to the drawings and examples.

As shown in fig. 1, the embodiment of the tailing mortar conveying device for filling comprises a buffer box 3 arranged in a downhole chamber 2, wherein a conveying pipe 1 is connected to the feeding end of the buffer box 3, and a filling pipe 4 is connected to the discharging end of the buffer box 3. The filling slurry of the ground filling station enters the buffer tank 3 through the delivery pipe 1 and then fills the filling zone (goaf) through the filling pipe 4.

The present embodiment also comprises a return pipe 5 with an outer end mounted at the top end of the filling zone. The inner end of the return pipe 5 is located inside the downhole chamber 2. The embodiment further comprises a control tube 7 with an inner end (left end shown in fig. 1) connected to the top side of the buffer tank 3 and communicated with the buffer tank 3, and the control tube 7 is in a horizontal direction as a whole. The embodiment further comprises a longitudinally arranged (i.e. overall oriented perpendicular to the horizontal plane) viewing tube 6, which viewing tube 6 is a transparent tube and has an upper end connected to and communicating with the outer end of said control tube 7 and a lower end connected to and communicating with the inner end of said return tube 5. The control pipe 7 is connected with an exhaust pipe 8 which is longitudinally arranged (i.e. the whole goes perpendicular to the horizontal plane) and is provided with a first control valve 9, and the exhaust end (i.e. the open end) of the exhaust pipe 8 is positioned at the top end of the exhaust pipe 8. The control pipe 7 is provided with a second control valve 10, and the second control valve 10 is located between the buffer tank 3 and the exhaust pipe 8 (i.e., between the buffer tank 3 and the connection point between the exhaust pipe 8 and the control pipe 7).

Specifically, a pipeline which is longitudinally arranged is fixedly arranged on the top side of the buffer box 3, and the inner end of the control pipe 7 is connected with the pipeline through an elbow. The outer end of the control pipe 7 is connected with the upper end of the observation pipe 6 through an elbow, and the lower end of the observation pipe 6 is connected with the inner end of the return pipe 5 through an elbow. The lower end of the exhaust pipe 8 is connected with the control pipe 7 through a tee joint. The top side of the buffer tank 3 is fixedly provided with a feeding pipe with a flange, and the flange is used for being connected with a flange of the lower port of the conveying pipe 1. The lower right side of the buffer tank 3 is fixedly provided with a discharging pipe with a flange, and the flange is used for connecting with a flange of an inner port (a left port shown in fig. 1) of the filling pipe 4.

Before the slurry is put into the buffer tank 3 through the transfer pipe 1, the second control valve 10 is opened and the first control valve 9 is closed. After the liquid level in the buffer tank 3 exceeds the pipe orifice of the discharge pipe, air in the buffer tank 3 is sequentially discharged to a filling area along with the rise of the liquid level through the control pipe 7, the observation pipe 6 and the return pipe 5. When it is observed that turbid slurry is present in the observation tube 6 (from the buffer tank 3), the second control valve 10 is closed and the first control valve 9 is opened, and air discharged from the filling area is discharged through the return tube 5, the observation tube 6 and the exhaust tube 8 in this order, so that slurry is rapidly introduced into the filling area by evacuation.

Immediately before the filling zone is topped up, the turbid slurry (from the filling zone) is again observed in the tube 6. At this point the ground filling station operator is notified to stop delivering slurry, instead of flushing water, and then closes the first control valve 9 and opens the second control valve 10. When the appearance of clear water in the observation tube 6 is observed, the operator of the ground filling station is informed to stop water supply and the filling is finished.

Claims (2)

1. The utility model provides a tailing mortar conveyor for filling, is including setting up buffer tank (3) in underground chamber (2), buffer tank (3) feed end is connected with conveyer pipe (1), and the discharge end is connected with filling pipe (4), tailing mortar conveyor still includes that the outer end is installed at back flow (5) at filling district top, its characterized in that: the inner end of the return pipe (5) is positioned inside the underground chamber (2); the top side of the buffer box (3) is connected with a control pipe (7) which runs in the horizontal direction and is communicated with the buffer box (3); the outer end of the control pipe (7) is communicated with the inner end of the return pipe (5); the control pipe (7) is connected with an exhaust pipe (8) which is longitudinally arranged and provided with a first control valve (9), and the exhaust end of the exhaust pipe (8) is positioned at the top end of the exhaust pipe (8); a second control valve (10) is arranged on the control pipe (7), and the second control valve (10) is positioned between the buffer tank (3) and the exhaust pipe (8).

2. The tailing mortar conveying apparatus for filling according to claim 1, wherein: the outer end of the control pipe (7) is communicated with the inner end of the return pipe (5) through a longitudinally arranged observation pipe (6); the observation tube (6) is a transparent tube.