Filler injection device and injection method thereof

Abstract

The present invention specifically relates to a filler injection device. The filler injection device includes: an injection pipe; the filler reaches the filled area via the injection pipe; a discharge device, which includes: a discharge pipe; the separated liquid of the filler can be discharged via the discharge pipe; a density meter, which is used to measure the density of the material discharged via the discharge pipe in real time; and an extraction device, which is arranged at one end of the discharge pipe away from the filled area, and the separated liquid in the filled area is discharged via the discharge pipe under the action of the extraction device. When the density of the material discharged from the discharge pipe measured by the density meter is greater than the set value, the extraction device stops the extraction work. The filler injection device of the present invention realizes the active identification of the status of the separated liquid in the filled area and stops extraction after the separated liquid is completely extracted.

Description

Technical Field

[0001] The invention belongs to the technical field of underground construction, and particularly relates to a filling injection device and an injection method thereof. Background Art

[0002] This section merely provides background information related to the present disclosure and is not necessarily prior art.

[0003] After underground mineral resources are mined, the mined-out areas formed will cause rock strata and surface movement under the combined influence of multiple factors such as hydrological conditions, geological conditions, mining disturbance, and topography, resulting in a series of geotechnical engineering problems such as road cracking and sinking, and house collapse.

[0004] Grouting technology is a highly practical and widely used engineering technique. It essentially involves drilling into the surface of an old goaf and, using hydraulic, pneumatic, or electrochemical methods, completely filling and reinforcing all cavities and overburden fissures within the goaf with a slurry mixture of cement, fly ash, sand, and other materials. This restores the goaf to a near-original state, completely eliminating the space for movement and deformation of the rock mass caused by mining. To prevent the slurry from flowing beyond the foundation's control boundary, a hole is drilled into the goaf at the control boundary outside the foundation, then filled with coarse aggregate and grouting to seal both ends of the goaf. In existing filling techniques, after injecting a large amount of fluid filling material into the goaf, significant segregation occurs after the liquid filler has been allowed to settle for a period of time. However, during the current goaf filling process, the water generated by this segregation is not treated before the secondary grouting. This situation can seriously affect the stability of the overlying strata and is highly likely to trigger further large-scale surface subsidence. Summary of the Invention

[0005] The present invention aims to solve, at least to a certain extent, the technical problem that the existing goaf filling device cannot discharge the water separated from the filling slurry in time.

[0006] To achieve the above-mentioned objectives, the first aspect of the present invention provides a filler injection device, which includes: an injection pipe; the filler reaches the filled area through the injection pipe; a discharge device, the discharge device includes: a discharge pipe; the separated liquid of the filler can be discharged through the discharge pipe; a density meter, the density meter is used to measure the density of the material discharged through the discharge pipe in real time; and an extraction device, the extraction device is arranged at one end of the discharge pipe away from the filled area, the separated liquid in the filled area is discharged through the discharge pipe under the action of the extraction device, and when the density of the material discharged from the discharge pipe measured by the density meter is greater than the set value, the extraction device stops the extraction work.

[0007] The beneficial effect of the filler injection device of the present invention is that the filler is injected through the injection pipe, and then a separated liquid is produced. In the process of discharging the separated liquid from the filled area, the density meter is used to measure the density of the material in the discharge pipe in real time, and when the measurement data of the density meter is greater than the set value, the extraction device stops working, thereby realizing active identification of the status of the separated liquid in the filled area, and stopping the extraction work after the separated liquid is completely extracted.

[0008] In addition, the filler injection device according to the present invention may also have the following additional technical features:

[0009] According to one embodiment of the present invention, the injection pipeline includes a detachably connected injection connecting pipeline and an injection terminal pipeline, and the injection connecting pipeline includes at least one injection pipeline segment detachably connected to each other.

[0010] According to one embodiment of the present invention, the discharge pipe includes a discharge connecting pipe and a discharge end pipe that are detachably connected, and the discharge connecting pipe includes at least one discharge pipe segment that is detachably connected to each other.

[0011] According to one embodiment of the present invention, it also includes a connecting pipe protective layer, which includes at least one connecting pipe protective layer segment, and each connecting pipe protective layer segment wraps at least a portion of the outer surface of an injection pipe segment and at least a portion of the outer surface of a discharge pipe segment, so that the injection pipe segment and the discharge pipe segment inside each connecting pipe protective layer segment are fixedly connected in parallel and spaced apart manner to form a connecting pipe segment.

[0012] According to one embodiment of the present invention, it further includes an end-section pipe protective layer, which wraps at least a portion of the outer surface of the discharge end-section pipe and at least a portion of the outer surface of the injection end-section pipe, so that the discharge end-section pipe and the injection end-section pipe inside each end-section pipe protective layer are fixedly connected in a manner of being parallel to each other and spaced apart to form the end-section pipe.

[0013] According to one embodiment of the present invention, the discharge device also includes: a mass block arranged inside the protective layer of the last section of the pipe, the mass block is fixed to the end of the discharge last section of the pipe close to the filled area, and the discharge last section of the pipe is a retractable pipe; a mass block switch, the mass block switch is arranged at the end of the protective layer of the last section of the pipe close to the mass block, and the mass block switch can seal the mass block inside the protective layer of the last section of the pipe or allow the mass block to drive the discharge last section of the pipe into the filled area; and a switch controller, the switch controller controls the opening or closing of the mass block switch.

[0014] According to one embodiment of the present invention, it also includes a control device, which includes a display device and an alarm. The display device is used to display the measurement value of the density meter. The display device includes a touch screen. The touch screen is used for the operator to input instructions to open or close the switch controller. The alarm is set to sound an alarm when the measurement value of the density meter is greater than the set value.

[0015] According to one embodiment of the present invention, it also includes a first wire and a second wire for connecting the control device and the density meter, and also includes a third wire and a fourth wire for connecting the switch controller and the control device, and the connecting pipeline segment and the end pipeline each include a part of the first wire, the second wire, the third wire and the fourth wire.

[0016] According to one embodiment of the present invention, the extraction device includes an extraction pipe, an extraction pump and an output pipe. The extraction pipe connects the extraction pump and the discharge pipe, and the filling extracted by the extraction pump is discharged through the output pipe.

[0017] A second aspect of the present invention provides a filler injection method, which is implemented using the filler injection device according to the first aspect of the present invention, and includes:

[0018] Step S1: Installing a filling material injection device to the area to be filled;

[0019] Step S2: injecting the filling material into the filled area through the injection pipe;

[0020] Step S3: After the filling material in the filled area is separated into separated liquid material, the separated liquid material is discharged through a discharge pipe under the action of an extraction device; and

[0021] Step S4: When the density measuring instrument measures that the density of the material in the discharge pipe is greater than the set value, the extraction device stops the extraction operation.

[0022] The beneficial effect of the filler injection method of the present invention is that the filler injection device can automatically measure the density of the material in the discharge pipe, automatically identify the status of the separated liquid in the filled area and stop extracting after the separated liquid is extracted, and the operation is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0024] Figure 1 It is a structural schematic diagram of a filler injection device provided by an embodiment of the present invention.

[0025] Figure 2 It is a structural schematic diagram of connecting pipeline segments provided by an embodiment of the present invention.

[0026] The accompanying drawings are numerals as follows:

[0027] 1: Filling injection device;

[0028] 10: injection pipe; 11: injection connecting pipe; 12: injection end pipe; 111: injection pipe segment; 1111: first interface of injection pipe segment; 1112: second interface of injection pipe segment; 121: third interface of injection end pipe segment; 122: fourth opening of injection end pipe segment;

[0029] 20: Discharge device; 21: Discharge connecting pipe; 22: Discharge end pipe; 23: Density meter; 24: Mass block; 25: Mass block switch; 26: Switch controller; 27: Extraction device; 271: Extraction pipe; 272: Extraction pump; 273: Output pipe; 221: Third port of the discharge end pipe; 222: Fourth opening of the discharge end pipe; 211: Discharge pipe segment; 2111: First port of the discharge pipe segment; 2112: Second port of the discharge pipe segment;

[0030] 30: Control device; 31: Display device; 32: Alarm; 33: First conductor; 34: Second conductor; 35: Third conductor; 36: Fourth conductor; 331: First conductor segment; 332: End of first conductor; 341: Second conductor segment; 342: End of second conductor; 351: Third conductor segment; 352: End of third conductor; 361: Fourth conductor segment; 362: End of fourth conductor;

[0031] 40: Connecting the pipeline protective layer; 41: Connecting the pipeline protective layer segment; 411: Connecting the first end of the pipeline protective layer segment; 412: Connecting the second end of the pipeline protective layer segment; 50: The last section of the pipeline protective layer. DETAILED DESCRIPTION

[0032] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0033] like Figure 1 and Figure 2As shown, an embodiment of the first aspect of the present invention provides a filler injection device 1, which includes: an injection pipe 10; the filler reaches the filled area via the injection pipe 10; a discharge device 20, the discharge device 20 includes: a discharge pipe; the separated liquid of the filler can be discharged via the discharge pipe; a density meter 23, the density meter 23 is used to measure the density of the material discharged via the discharge pipe in real time; and an extraction device, the extraction device 27 is arranged at one end of the discharge pipe away from the filled area, the separated liquid in the filled area is discharged via the discharge pipe under the action of the extraction device 27, and when the density of the material discharged from the discharge pipe measured by the density meter 23 is greater than the set value, the extraction device 27 stops the extraction work.

[0034] The filler includes a filling slurry, which is a mixture of cement, fly ash, and sand. It is understood that the filler can also be other materials that can serve as a filling material. The filled area includes an underground goaf. It is understood that the filled area can also be other areas that need to be filled. The separated liquid includes water.

[0035] The injection pipeline 10 includes an injection connecting pipeline 11 and an injection terminal pipeline 12, which are connected to each other. The injection connecting pipeline 11 includes at least one injection pipeline segment 111, and the injection pipeline segment 111 includes a first interface 1111 and a second interface 1112 of the injection pipeline segment, which are opposite to each other. When the injection connecting pipeline 11 includes two or more injection pipeline segments 111, the two adjacent injection pipeline segments 111 are detachably connected to each other through their adjacent interfaces (the first interface 1111 of the injection pipeline segment or the second interface 1112 of the injection pipeline segment). Specifically, the two adjacent injection pipeline segments 111 are connected by flanges. The injection terminal pipeline 12 includes a third interface 121 of the injection terminal pipeline and a fourth opening 122 of the injection terminal pipeline. In use, the interface of the injection pipeline segment 111 farthest from the injection terminal pipeline 12 is used to receive the filling material, and the filling material enters the interior of the injection connecting pipeline 11 through this interface. The connection of the injection connecting pipe 11 closest to the final injection pipe section 12 is connected to the third connection 121 of the final injection pipe section. The connection method between the injection connecting pipe 11 and the final injection pipe section 12 is not limited, as long as the two can be fixedly connected. In this embodiment, the injection connecting pipe 11 and the final injection pipe section 12 are connected via a flange. It is understood that the injection connecting pipe 11 and the final injection pipe section 12 can also be a single-piece structure.

[0036] The discharge pipeline includes a discharge connecting pipeline 21 and a discharge terminal pipeline 22, which are connected to each other. The discharge terminal pipeline 22 is a retractable pipeline. The discharge connecting pipeline 21 includes at least one discharge pipeline segment 211. The number of discharge pipeline segments 211 is the same as the number of input pipeline segments 111. Each discharge pipeline segment 211 includes a first discharge pipeline segment interface 2111 and a second discharge pipeline segment interface 2112 disposed opposite to each other. The discharge terminal pipeline 22 includes a third discharge terminal pipeline interface 221 and a fourth discharge terminal pipeline interface 222. The interface of the discharge pipeline segment 211 farthest from the discharge terminal pipeline 22 is connected to the extraction device 27. When the discharge connecting pipe 21 includes two or more discharge pipe segments 211, the two adjacent discharge pipe segments 211 are detachably connected to each other via their adjacent interfaces (the first interface 2111 of the discharge pipe segment or the second interface 2112 of the discharge pipe segment). Specifically, the two adjacent discharge pipe segments 211 are connected via flanges. It is understood that the discharge connecting pipe 21 and the discharge terminal pipe section 22 may also be an integral structure. In this embodiment, the density meter 23 is disposed within the discharge terminal pipe section 22, specifically, in the portion of the discharge terminal pipe section 22 near the filled area.

[0037] The filler injection device 1 also includes a connecting pipe protective layer 40, which includes at least one connecting pipe protective layer segment 41. The number of connecting pipe protective layer segments 41 is consistent with the number of discharge pipe segments 211 or the number of injection pipe segments 111. Each connecting pipe protective layer segment 41 encloses an injection pipe segment 111 and a discharge pipe segment 211 to form a connecting pipe segment. The connecting pipe protective layer segment 41 fixes the injection pipe segment 111 and the discharge pipe segment 211 therein in parallel and at intervals. The injection pipe segments 111 within the plurality of connecting pipe segments are connected to each other to form the injection pipe 10, and the discharge pipe segments 211 are connected to each other to form the discharge pipe.

[0038] In one embodiment, the connecting pipe protective layer segment 41 may only cover a portion of the outer surface of the injection pipe segment 111 and only cover a portion of the outer surface of the discharge pipe segment 211. The connecting pipe protective layer segment 41 includes a first end 411 of the connecting pipe protective layer segment and a second end 412 of the connecting pipe protective layer segment. The first interface 1111 of the injection pipe segment and the first interface 2111 of the discharge pipe segment both extend a certain distance beyond the first end 411 of the connecting pipe protective layer segment. The second end 412 of the connecting pipe protective layer segment is hollowed a certain distance inward along the axis of the connecting pipe protective layer segment 41, i.e., the second end 412 of the connecting pipe protective layer segment is a hollow structure. The second interface 1112 of the injection pipe segment and the second interface 2112 of the discharge pipe segment are flush with the second end 412 of the connecting pipe protective layer segment. During the process of connecting multiple connecting pipe protective layer segments 41, when two adjacent connecting pipe segments are connected, the first interface 1111 of the injection pipe segment of one connecting pipe segment is inserted into the second interface 1112 of the other injection pipe segment, and the first interface 2111 of the discharge pipe segment of one connecting pipe segment is inserted into the second interface 2112 of the discharge pipe segment of the other connecting pipe segment. With this arrangement, after the two adjacent connecting pipe segments are connected, the multiple connecting pipe segments form a smooth outer surface, which helps protect internal components from damage.

[0039] The filler injection device 1 also includes a terminal pipe protective layer 50. The terminal pipe protective layer 50 covers the discharge terminal pipe 22 and the injection terminal pipe 12, and fixes the discharge terminal pipe 22 and the injection terminal pipe 12 together in parallel to form the terminal pipe. The terminal pipe protective layer 50 includes a first end and a second end. The first end of the terminal pipe protective layer 50 is away from the filled area, and the second end of the terminal pipe protective layer 50 is close to the filled area. The third interface 221 of the discharge terminal pipe and the third interface 121 of the injection terminal pipe both extend beyond the first end of the terminal pipe protective layer 50, making it easier to connect to the connecting pipe segment. The fourth opening 122 of the injection terminal pipe is flush with the second end of the terminal pipe protective layer 50. The discharge device 20 also includes a mass block 24, a mass block switch 25, and a switch controller 26, which are arranged at the fourth opening 222 of the discharge terminal pipe. The length of the last section of the discharge pipe 22 is retractable. When the last section of the discharge pipe 22 is shortened, the interior of the discharge pipe is isolated from the filled area by the mass block switch 25 (the mass block switch 25 is closed at this time). At this time, the mass block 24 is also located inside the protective layer 50 of the last section of the pipe. When the switch controller 26 turns on the mass block switch 25, the mass block 24 drives the last section of the discharge pipe 22 to sink into the filled area. The mass block 24 is an object with a large mass. In this embodiment, the mass block 24 is an iron block, and the mass block switch 25 is a spiral switch. The function of the mass block switch 25 is to close the partial opening of the protective layer 50 of the last section of the pipe near the mass block 24 or to open the partial opening of the protective layer 50 of the last section of the pipe near the mass block 24. The switch controller 26 is used to turn the mass block switch 25 on or off. The switch controller 26 is electrically connected to the control device 30. The first end of the final pipe section protective layer 50 covers the final pipe section 22 at the lower end of the third interface 221 of the final pipe section 22. The lower end of the third interface 221 of the final pipe section 22 and the first end of the final pipe section protective layer 50 cannot move relative to each other. This allows the third interface 221 of the final pipe section 22 to be connected to the second interface of the discharge connecting pipe 21. Specifically, a flange connection can be achieved. The second end of the final pipe section protective layer 50 is open. The first and second ends of the final pipe section protective layer 50 are connected to each other to form a protective layer pipe, which allows the retractable final pipe section 22 to expand and contract within the protective layer pipe, that is, allows the fourth opening 222 of the final pipe section 22 to move relative to its third interface 221. This allows the final pipe section 22 to be enclosed within the mass block switch 25 of the final pipe section protective layer 50 or to extend into the filled area under the action of the mass block 24.

[0040] The extraction device 27 includes an extraction pipe 271, an extraction pump 272 and an output pipe 273. The extraction pipe 271 includes a first end and a second end. The first end of the extraction pipe 271 is connected to the discharge connecting pipe 21, and the two can be connected by a flange. The second end of the extraction pipe 271 is connected to the extraction pump 272. The filling in the discharge pipe enters the extraction pump 272 through the extraction pipe 271. The output pipe 273 is connected to the extraction pump 272. The extraction pump 272 can generate an outward suction force on the filling in the discharge pipe, and then generate suction force on the filling in the filled area, so that the filling in the filled area is extracted into the extraction pipe 271 through the discharge pipe, and then transported to the outside through the output pipe 273.

[0041] In one embodiment, the filling material injection device 1 further includes a control device 30, which includes an operating box and multiple wires. The operating box includes a display device 31, an alarm 32, and control operating components. The display device 31 is used to display the measured value of the density meter 23. The display device 31 includes a touch screen, which is used by the operator to input commands to open or close the switch controller to seal or release the mass. The alarm 32 is configured to sound an alarm when the measured value of the density meter 23 exceeds a set value.

[0042] In this embodiment, the plurality of wires comprises four wires, namely a first wire 33, a second wire 34, a third wire 35, and a fourth wire 36. The first wire 33 and the second wire 34 are used to connect the control device 30 and the density meter 23, while the third wire 35 and the fourth wire 36 are used to connect the control device 30 and the switch controller 26. The first wire 33 may include at least one first wire segment 331 and a first wire end 332. The second wire 34 may include at least one second wire segment 341 and a second wire end 342. The third wire 35 may include at least one third wire segment 351 and a third wire end 352. The fourth wire 36 may include at least one fourth wire segment 361 and a fourth wire end 362. One end of each of the first wire end 332 and the second wire end 342 is electrically connected to the density meter 23, while one end of each of the third wire end 352 and the fourth wire end 362 is electrically connected to the switch controller 26. The other ends of the first wire end section 332 , the second wire end section 342 , the third wire end section 352 , and the fourth wire end section 362 are integrated into an end-section wire interface.

[0043] Each connecting pipe segment is encased within the connecting pipe protective layer 40, comprising a first wire segment 331, a second wire segment 341, a third wire segment 351, and a fourth wire segment 361. At both ends of each connecting pipe segment, the first wire segment 331, the second wire segment 341, the third wire segment 351, and the fourth wire segment 361 are integrated into a single wire segment, each of which includes a first interface 345 and a second interface 456. When two or more connecting pipe segments are connected to each other, adjacent connecting pipe segments are electrically connected to each other through adjacent interfaces (first interface 345 of the wire segment or second interface 456 of the wire segment), so that at least one first wire segment 331 and first wire end 332 in the connected connecting pipe and the end pipe are connected to form a first wire 33, at least one second wire segment 341 and second wire end 342 are connected to form a second wire 34, at least one third wire segment 351 and third wire end 352 are connected to form a third wire 35, and at least one fourth wire segment 361 and fourth wire end 362 are connected to form a fourth wire 36. The first interface 345 or second interface 456 of the wire segment farthest from the end pipe is electrically connected to the control device 30. The first interface 345 of the wire segment can extend beyond the first end 411 of the connecting pipe protective layer segment, and the second interface 456 of the wire segment can be located within the second end 412 of the connecting pipe protective layer segment. At the second end 412 of the connecting pipe cover segment, the connecting pipe cover segment 41 is hollow to allow the first interface 345 of the wire segment of the adjacent connecting pipe cover segment 41 to be inserted therein and electrically connected to the first interface 345 of the wire segment.

[0044] The beneficial effects of the filling injection device 1 provided in this embodiment are as follows: first, in the process of discharging the filling from the filled area, the main purpose is to discharge the separated liquid of the filling, such as accumulated water, and the density of the filling in the discharge pipe is measured in real time by the density measuring instrument 23. Once the density of the filling is greater than the set value, it means that the accumulated water in the filled area has been discharged, and the extraction device 27 stops working, realizing the active identification of the water accumulation in the filled area and stopping the extraction after the accumulated water is completely extracted; second, the injection pipe 10, the discharge pipe and the plurality of wires are all The detachable structure can inject fillers into filled areas of different sizes by connecting multiple connecting pipe segments to each other; thirdly, the discharge device 20 can discharge the separated liquid generated after each injection of filler into the filled area (goaf), thereby increasing the subsequent injection amount of filler into the filled area, improving the overall stability of the filled area, and at the same time improving the overall strength of the filler, further eliminating the potential safety hazards of a large amount of separated liquid (accumulated water) inside the filled area (goaf) to the proposed building, and reducing the possibility of surface subsidence or ground collapse.

[0045] An embodiment of the second aspect of the present invention provides a filler injection method, which is implemented according to the filler injection device of the first aspect of the present invention and includes the following steps:

[0046] Step S1: providing the filler injection device 1 and installing the filler injection device 1 to the area to be filled;

[0047] Step S2: injecting the filling material into the filled area through the injection pipe 10;

[0048] Step S3: After the filling material in the filled area is separated into separated liquid, the separated liquid is discharged through the discharge pipe under the action of the extraction device 27; and

[0049] Step S4: When the density measuring instrument 23 measures that the density of the discharged matter in the discharge pipe is greater than the set value, the extraction device 27 stops the extraction operation.

[0050] In step S4, when the density measuring instrument 23 measures that the density of the discharged material in the discharge pipe is greater than the set value, the discharge pipe is no longer filled with low-density separated liquid (accumulated water) but with high-density filling slurry.

[0051] Step S1 also includes the following sub-steps:

[0052] Step S11, extending one end of the last section of the pipe into the filled area;

[0053] Step S12, connecting the connecting pipe segment to the end pipe segment; and

[0054] Step S13: connecting the connecting pipe segments to the extraction device 27 and the control device 30 respectively.

[0055] In step S11, the end-section pipeline includes an end-section pipeline protective layer 50 and an injection end-section pipeline 12, an exhaust end-section pipeline 22, a mass block 24 connected to the exhaust end-section pipeline 22, a mass block switch 25, a switch controller 26, a wire end section of the first wire, a wire end section of the second wire, a wire end section of the third wire, and a wire end section of the fourth wire, which are arranged inside the end-section pipeline protective layer 50.

[0056] Insert one end of the fourth opening 122 of the final injection pipe section 12 and one end of the fourth opening 222 of the final discharge pipe section 22 into the filled area. Extend the third interface 121 of the final injection pipe section 12 and the third interface 221 of the final discharge pipe section 22 beyond the filled area to facilitate connection with the injection connecting pipe 11 and the discharge connecting pipe 21. The mass 24, mass switch 25, and switch controller 26 are then completely submerged within the filled area. The distal wire interfaces of the first, second, third, and fourth wires 33, 34, 35, and 36 extend beyond the filled area to facilitate electrical connection with the first interface 345 or the second interface 456 of the wire segment.

[0057] In step S12, the injection connecting pipe 11 is connected to the injection end pipe 12, the discharge connecting pipe 21 is connected to the discharge end pipe 22, the first interfaces 345 or the second interfaces 456 of adjacent wire segments are connected to each other, and then connected to the end wire interface.

[0058] In step S13 , the pipeline segment is connected to the extraction device 27 via a pipeline connection, specifically, a flange connection, and the pipeline segment is connected to the control device 30 via an electrical connection, specifically, a wire connection.

[0059] Step S3 includes the following sub-steps:

[0060] Step S31, allowing the filling material in the filled area to stand for a certain period of time to separate the filling material into liquid;

[0061] Step S32: The mass block switch 25 is opened by operating the control device 30, and the mass block 24 is sunk into the filled area.

[0062] Step S33 , opening the extraction device 27 of the discharge device 20 so that the separated liquid is discharged through the discharge pipe under the action of the extraction device 27 , and at the same time, the density meter 23 measures the density of the material in the discharge pipe in real time.

[0063] After step S4, the following steps may also be included:

[0064] Step S5 , repeating steps S2 , S3 and S4 , that is, injecting the filler into the filled area through the injection pipe 10 again, and discharging the separated liquid through the discharge device 20 .

[0065] The method for using the filler injection device 1 of the second aspect of the present invention has the following beneficial effects: the method for using the filler injection device 1 has simple steps and is easy to operate, can automatically measure the density of the filler in the discharge pipe, actively identify the status of the separated liquid in the filled area, and stop extracting after the separated liquid is extracted.

[0066] The foregoing description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be readily conceived by a person skilled in the art within the technical scope disclosed herein are intended to be encompassed within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A filling material injection device, characterized in that: The filler injection device comprises: Injection pipe; the filling material reaches the filled area through the injection pipe; A discharge device, comprising: A discharge pipe; the separated liquid of the filling can be discharged through the discharge pipe; a density measuring instrument for measuring in real time the density of the material discharged through the discharge pipe; and an extraction device, the extraction device being disposed at an end of the discharge pipe away from the filled area, the separated liquid in the filled area being discharged through the discharge pipe under the action of the extraction device, and the extraction device stopping the extraction operation when the density of the material discharged from the discharge pipe measured by the density measuring instrument is greater than a set value; The injection pipeline includes a detachably connected injection connecting pipeline and an injection terminal pipeline, and the injection connecting pipeline includes at least one injection pipeline segment detachably connected to each other; The discharge pipe includes a detachably connected discharge connecting pipe and a discharge end pipe, and the discharge connecting pipe includes at least one discharge pipe segment detachably connected to each other; The invention also includes a connecting pipe protective layer, wherein the connecting pipe protective layer includes at least one connecting pipe protective layer segment, each connecting pipe protective layer segment internally wrapping at least a portion of the outer surface of one of the injection pipe segments and at least a portion of the outer surface of one of the discharge pipe segments, so that the injection pipe segment and the discharge pipe segment inside each of the connecting pipe protective layer segments are fixedly connected in a parallel and spaced manner to form a connecting pipe segment; The apparatus further comprises an end-pipe protection layer, wherein the end-pipe protection layer covers at least a portion of the outer surface of the discharge end-pipe and at least a portion of the outer surface of the injection end-pipe, so that the discharge end-pipe and the injection end-pipe inside each end-pipe protection layer are fixedly connected in a parallel and spaced manner to form an end-pipe; The discharge device further includes: a mass block, the mass block being fixed to one end of the discharge end pipe close to the filled area, the discharge end pipe being a telescopic pipe; A mass block switch, the mass block switch being arranged at one end of the protective layer of the last section of the pipeline close to the mass block, the mass block switch being capable of sealing the mass block inside the protective layer of the last section of the pipeline or allowing the mass block to drive the discharge last section of the pipeline into the filled area; and a switch controller, the switch controller controlling the opening or closing of the mass block switch.

2. The filler injection device according to claim 1, characterized in that: It also includes a control device, which includes a display device and an alarm. The display device is used to display the measured value of the density meter. The display device includes a touch screen, and the touch screen is used for the operator to input instructions to open or close the switch controller. The alarm is set to sound an alarm when the measured value of the density meter is greater than the set value.

3. The filler injection device according to claim 2, characterized in that: It also includes a first wire and a second wire for connecting the control device and the density meter, and also includes a third wire and a fourth wire for connecting the switch controller and the control device. The connecting pipeline segment and the end pipeline each include a portion of the first wire, the second wire, the third wire and the fourth wire.

4. The filler injection device according to claim 1, characterized in that: The extraction device includes an extraction pipeline, an extraction pump and an output pipeline. The extraction pipeline connects the extraction pump and the discharge pipeline, and the material extracted by the extraction pump is discharged through the output pipeline.

5. A filler injection method, the filler injection method being implemented using the filler injection device according to any one of claims 1 to 4, characterized in that: include: Step S1: installing the filler injection device to the filled area; Step S2: injecting the filler into the filled area through the injection pipe; Step S3: After the filling material in the filled area is separated into separated liquid, the separated liquid is discharged through the discharge pipe under the action of the extraction device; as well as Step S4: When the density measuring instrument measures that the density of the material in the discharge pipe is greater than the set value, the extraction device stops the extraction operation.

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