Grouting device and method for filling coal mine goaf

Abstract

The invention relates to the technical field of goaf filling equipment, in particular to a grouting device for coal mine goaf filling, which comprises a support frame, a storage tank, a feeding pipe, a connecting pipe, a conveying mechanism and a blocking mechanism, and the bottom of the storage tank is fixedly connected with the top of the inner side wall of the support frame. According to the slurry storage device, the material blocking mechanism is arranged at one end of the conveying mechanism, slurry is conveniently conveyed into the material storage tank through the feeding pipe, the slurry in the material storage tank is stirred through the stirring assembly, the slurry is conveniently conveyed to one side of the material blocking mechanism through the conveying mechanism, and the number of second conveying pipes can be adjusted according to use requirements; the device is simple in structure and convenient to mount and dismount, a connecting plate, a first rectangular plate and a second rectangular plate are moved by starting two second motors, so that a rubber sleeve and four rubber pads are in extrusion contact with the inner side wall of a mine hole, slurry is prevented from flowing out of a gap between the material blocking mechanism and the mine hole, and the grouting effect during filling is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of goaf filling equipment, in particular to a grouting device and method for filling goaf in a coal mine. Background Art

[0002] Coal mine goaf refers to the void or cavity left after the underground coal or coal gangue is mined during the coal mining process. If the goaf is not properly reinforced or backfilled, it may collapse after a long time, leading to ground subsidence, forming collapse pits on the surface, and may form water accumulation, which in turn affects the cultivation of farmland. The filling method is the most common goaf management technology at present. Through grouting, backfilling and other methods, the void can be filled to make the goaf reach a stable state. When backfilling, the coal mine goaf will be divided by plates and filled section by section. After grouting, the slurry is easy to flow out from the gap between the plate used for blocking materials and the mine hole, which can easily cause a cavity to form on the top of the goaf, affecting the filling effect. Summary of the invention

[0003] The object of the present invention is to provide a grouting device and method for filling coal mine goaf to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions: A grouting device for filling a coal mine goaf, comprising: Support frame; A material storage tank, the bottom of which is fixedly connected to the top of the inner wall of the support frame, and a stirring assembly is arranged inside the material storage tank; A feed pipe, the bottom of which is connected and fixed to the top of the storage tank; A connecting pipe, the top of which is connected and fixed to the bottom of the storage tank, and the bottom of the connecting pipe is fixedly connected to a flange plate 1; A conveying mechanism, arranged at the bottom of the first flange; The material blocking mechanism is arranged at one end of the conveying mechanism.

[0005] Furthermore, the stirring assembly comprises: A stirring frame, the top of which is rotatably connected to the inner top surface of the storage tank; Motor 1 is fixedly connected to the top of the material storage tank, and an output end of the motor 1 passes through the side wall of the material storage tank and is fixedly connected to the top of the stirring frame.

[0006] Furthermore, the conveying mechanism comprises a conveying pipe 1, a plurality of conveying pipes 2 are arranged at one end of the conveying pipe 1, and a flange 2 is fixedly connected to one end of the conveying pipe 1 and both ends of the plurality of conveying pipes 2.

[0007] Furthermore, the material blocking mechanism includes a baffle, both ends of one side of the baffle are provided with a rectangular groove 1, and the top and bottom of one side of the baffle are provided with a rectangular groove 2, an adjustment component is arranged on the outer side of the baffle, and a support component is arranged at the bottom of the adjustment component.

[0008] Preferably, the adjustment component comprises: Four connecting plates are respectively arranged at four corners of one side of the baffle, the outer side walls of the four connecting plates are sleeved and fixed with rubber sleeves, and both ends of one side of the connecting plates are fixedly connected with sliders; A rectangular shell is fixedly connected to one side of the baffle, four adjacent side walls of the rectangular shell are slidably connected with moving rods, a threaded hole is opened at the middle position of the moving rod, and a fixing plate is fixedly connected to the outer side of the moving rod; Two rectangular plates 1 are respectively connected to the inside of the two rectangular grooves 1 by sliding, and two ends of one side of the rectangular plate 1 are provided with a sliding groove 1; The two rectangular plates 2 are respectively slidably connected to the inside of the two rectangular grooves 2, and two sliding grooves 2 are provided at both ends of one side of the rectangular plate 2, and the four sliding grooves 2 and the four sliding grooves 1 are respectively slidably connected to the sliders at the corresponding positions, and one side of the two rectangular plates 2 and the two rectangular plates 1 are respectively fixedly connected to the fixed plates at the corresponding positions.

[0009] Preferably, two staggered circular tubes are provided inside the rectangular shell, and the outer side walls of the circular tubes are both sleeved and fixed with support plate 1, and one end of support plate 1 is fixedly connected to the inner side wall of the rectangular shell, and screws are sleeved and fixed inside the two ends of the circular tubes, and one end of the screws are respectively screwed and connected with threaded holes at corresponding positions, and support plate 2 is provided on the outer side of the circular tube, and one end of support plate 2 is fixedly connected to the inner side wall of the rectangular shell, one side of support plate 2 is fixedly connected to motor 2, and the output end of motor 2 is fixedly connected to a round block, the outer side walls of the two circular tubes and the two round blocks are both sleeved and fixed with round blocks, and a belt is connected for transmission between two adjacent round blocks.

[0010] Preferably, the supporting assembly comprises an L-shaped plate, both ends of the inner bottom surface of the L-shaped plate are fixedly connected with telescopic plates, and the top of the telescopic plate is fixedly connected to the bottom of the rectangular shell, oil cylinders are arranged on the outer sides of the two telescopic plates, and one end and the output end of the oil cylinder are fixedly connected with a rotating block, the outer side wall of the rotating block is rotatably connected with a rotating seat, an inner side wall of the L-shaped plate and the bottom of the rectangular shell are respectively fixedly connected to the rotating seat at corresponding positions, and a plurality of bolt holes are opened on one side of the L-shaped plate.

[0011] A method for using a grouting device for filling a coal mine goaf, the method specifically comprising the following steps: Step 1: When in use, use multiple flanges 2 and bolts to connect and fix the delivery pipe 1 and multiple delivery pipes 2, and connect the top flange 2 with the flange 1 by bolts, and open a circular hole on the top rectangular plate 2 so that one end of the delivery pipe 1 is fixedly connected to the inner wall of the circular hole, thereby completing the installation of the delivery mechanism; Step 2: The threaded holes on the L-shaped plate are used to fix the L-shaped plate on the coal mine vehicle, and the height of the rectangular shell, the baffle plate and the adjustment assembly are adjusted by starting the oil cylinder, and the two motors 2 are started to rotate the two round tubes and the four screws, so that the fixed plate, the rectangular plate 1 or the rectangular plate 2 are moved, and the movement of the two rectangular plates 1 and the two rectangular plates 2 will push the four connecting plates to move, so that the four connecting plates are moved to the appropriate position, and the rubber sleeve and the four rubber pads are squeezed and contacted with the inner wall of the mine hole; Step three: Use the feed pipe to facilitate the delivery of slurry into the storage tank, and use the connecting pipe and flange 1 to facilitate the delivery of slurry to the inside of the conveying mechanism, and by starting the motor 1, the stirring frame rotates to stir the slurry inside the storage tank, and then use the conveying mechanism to facilitate the delivery of the slurry to one side of the blocking mechanism, and use the blocking mechanism to facilitate the slurry to accumulate and solidify at a specific position. After the slurry in one place solidifies, remove a section of the conveying pipe 2, connect the conveying pipe 1 with the corresponding conveying pipe 2, and then move the blocking mechanism to facilitate filling and grouting at the next place.

[0012] Compared with the prior art, the present invention has the following beneficial effects: By arranging a material blocking mechanism at one end of the conveying mechanism, the feed pipe is used to facilitate the conveying of slurry into the storage tank, and the stirring assembly is used to stir the slurry inside the storage tank, and the conveying mechanism is used to facilitate the conveying of the slurry to one side of the material blocking mechanism, and the number of conveying pipes 2 can be adjusted according to the needs of use, and the installation and disassembly are simpler and more convenient, and by starting the two motors 2, the connecting plate, the rectangular plate 1 and the rectangular plate 2 are moved, so that the rubber sleeve and the four rubber pads are all squeezed and contacted with the inner wall of the mine hole, thereby avoiding the slurry from flowing out of the gap between the material blocking mechanism and the mine hole, ensuring the grouting effect during filling, and by adjusting the positions of the four connecting plates, the two rectangular plates 1 and the two rectangular plates 2, the material blocking mechanism can be suitable for mine holes of different specifications, thereby improving the practicability of the grouting device for filling coal mine goafs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the positional relationship between the storage tank and the stirring frame in the present invention; Figure 3It is a schematic diagram of the positional relationship between the second delivery pipe and the second flange in the present invention; Figure 4 It is a schematic diagram of the structure of the material blocking mechanism in the present invention; Figure 5 It is a schematic diagram of the baffle structure in the present invention; Figure 6 It is a schematic diagram of the positional relationship between the rectangular shell and the circular tube in the present invention; Figure 7 yes Figure 6 A partial enlarged view of the middle part; Figure 8 It is a schematic diagram of the positional relationship between the connecting plate and the slider in the present invention; Fig. 9 It is a schematic diagram of the positional relationship between the L-shaped plate and the telescopic plate in the present invention.

[0014] In the figure: 100, support frame; 110, storage tank; 120, feed pipe; 130, connecting pipe; 131, flange plate 1; 140, stirring frame; 150, motor 1; 200, conveying mechanism; 210, conveying pipe 1; 220, conveying pipe 2; 230, flange plate 2; 300, material blocking mechanism; 310, baffle; 311, rectangular groove 1; 312, rectangular groove 2; 320, connecting plate; 321, rubber sleeve; 322, slider; 330, rectangular Shell; 331, round tube; 332, screw; 333, moving rod; 334, fixed plate; 335, support plate 1; 340, L-shaped plate; 341, telescopic plate; 342, oil cylinder; 343, rotating block; 344, rotating seat; 350, rectangular plate 1; 351, slide 1; 360, rectangular plate 2; 361, slide 2; 370, rubber pad; 380, support plate 2; 381, motor 2; 382, ​​round block; 390, pulley; 391, belt. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] See also Figure 1-9In an embodiment of the present invention, a grouting device for filling a coal mine goaf includes: a support frame 100, a storage tank 110, a feed pipe 120, a connecting pipe 130, a conveying mechanism 200 and a material blocking mechanism 300. The bottom of the storage tank 110 is fixedly connected to the top of the inner wall of the support frame 100, and a stirring assembly is arranged inside the storage tank 110. The bottom of the feed pipe 120 is connected and fixedly connected to the top of the storage tank 110, and the top of the connecting pipe 130 is connected and fixedly connected to the bottom of the storage tank 110. The bottom of the connecting pipe 130 is fixedly connected to a flange 131. The conveying mechanism 200 is arranged at the bottom of the flange 131. The material blocking mechanism 300 0 is arranged at one end of the conveying mechanism 200. When in use, the feed pipe 120 is used to convey the slurry into the storage tank 110, and the stirring assembly is used to stir the slurry in the storage tank 110. The connecting pipe 130 and the flange 131 are used to convey the slurry to the conveying mechanism 200. The conveying mechanism 200 is then used to convey the slurry to one side of the blocking mechanism 300, and the blocking mechanism 300 is used to block the slurry. The blocking mechanism 300 can be applied to mines of different specifications to prevent the slurry from flowing out of the gap between the blocking mechanism 300 and the mine, thereby ensuring the grouting effect during filling.

[0017] The stirring assembly includes: a stirring frame 140 and a motor 150, the top of the stirring frame 140 is rotatably connected to the inner top surface of the storage tank 110, the motor 150 is fixedly connected to the top of the storage tank 110, the output end of the motor 150 passes through the side wall of the storage tank 110 and is fixedly connected to the top of the stirring frame 140, the conveying mechanism 200 includes a conveying pipe 1 210, one end of the conveying pipe 1 210 is provided with a plurality of conveying pipes 220, one end of the conveying pipe 1 210 and both ends of the plurality of conveying pipes 220 are fixedly connected with a flange 230, and by starting the motor 150, the stirring frame 140 is rotated to the storage tank The slurry inside 110 is stirred to ensure the mixing effect of the slurry, and then the delivery pipe 1 210 and the multiple delivery pipes 220 are connected and fixed by using multiple flanges 230 and bolts, and the top flange 230 is connected to the flange 131 by bolts, and a circular hole is opened on the top rectangular plate 2 360, so that one end of the delivery pipe 1 210 is fixedly connected to the inner wall of the circular hole, and the installation of the delivery mechanism 200 is completed, and the delivery pipe 220 is easy to disassemble, so that the number of delivery pipes 220 can be adjusted according to the delivery length of the slurry, which is simpler and more convenient to use.

[0018] The material blocking mechanism 300 includes a baffle 310, both ends of one side of the baffle 310 are provided with a rectangular groove 1 311, and the top and bottom of one side of the baffle 310 are provided with a rectangular groove 2 312, an adjustment component is arranged on the outer side of the baffle 310, and a supporting component is arranged on the bottom of the adjustment component, and the adjustment component includes: four connecting plates 320, a rectangular shell 330, two rectangular plates 1 350 and two rectangular plates 2 360, the four connecting plates 320 are respectively arranged at the four corners of one side of the baffle 310, the outer side walls of the four connecting plates 320 are sleeved and fixed with rubber sleeves 321, both ends of one side of the connecting plate 320 are fixedly connected with sliders 322, the rectangular shell 330 is fixedly connected to one side of the baffle 310, and the four adjacent side walls of the rectangular shell 330 are all sliding A moving rod 333 is connected, and a threaded hole is provided at the middle position of the moving rod 333. A fixed plate 334 is fixedly connected to the outer side of the moving rod 333. Two rectangular plates 350 are respectively slidably connected to the inside of the two rectangular grooves 311. Both ends of one side of the rectangular plate 350 are provided with a slide groove 351. Two rectangular plates 360 are respectively slidably connected to the inside of the two rectangular grooves 312. Both ends of one side of the rectangular plate 360 ​​are provided with a slide groove 361. The four slide grooves 361 and the four slide grooves 351 are respectively slidably connected to the sliders 322 at the corresponding positions. The two rectangular plates 360 and one side of the two rectangular plates 350 are respectively fixedly connected to the fixed plates 334 at the corresponding positions. The interior of the rectangular shell 330 is provided with two staggered arrangements. The circular tube 331, the outer side wall of the circular tube 331 is sleeved and fixed with a support plate 1 335, and one end of the support plate 1 335 is fixedly connected to the inner side wall of the rectangular shell 330, the inner sides of the two ends of the circular tube 331 are sleeved and fixed with screws 332, and one end of the screws 332 are respectively screwed and connected with threaded holes at corresponding positions, a support plate 2 380 is arranged on the outer side of the circular tube 331, and one end of the support plate 2 380 is fixedly connected to the inner side wall of the rectangular shell 330, a motor 2 381 is fixedly connected to one side of the support plate 2 380, and a round block 382 is fixedly connected to the output end of the motor 2 381, the outer side walls of the two circular tubes 331 and the two round blocks 382 are sleeved and fixed with round blocks 382, ​​and a belt 391 is connected between two adjacent round blocks 382 for transmission, and the support assembly includes an L-shaped plate 340, both ends of the inner bottom surface of the L-shaped plate 340 are fixedly connected with telescopic plates 341, and the top of the telescopic plate 341 is fixedly connected to the bottom of the rectangular shell 330, and the outer sides of the two telescopic plates 341 are provided with oil cylinders 342, and one end and the output end of the oil cylinder 342 are fixedly connected with a rotating block 343, and the outer wall of the rotating block 343 is rotatably connected with a rotating seat 344, and an inner side wall of the L-shaped plate 340 and the bottom of the rectangular shell 330 are respectively fixedly connected to the rotating seat 344 at the corresponding position, and a plurality of bolt holes are provided on one side of the L-shaped plate 340. The threaded holes provided on the L-shaped plate 340 are used to facilitate fixing the L-shaped plate 340 on the coal mine vehicle, and by starting the oil cylinder 342, the rotating block 343 and the rotating seat 344 connected to the output end of the oil cylinder 342 are moved.The telescopic plate 341 is used to limit the rectangular shell 330, so that the height of the rectangular shell 330, the baffle 310 and the adjustment component can be adjusted. By starting the two motors 381, the motors 381 are used to drive the round block 382 and the pulley 390 thereon to rotate, and the belt 391 is used for transmission, so that the two round tubes 331 and the four screw rods 332 are rotated, and then the four moving rods 333 and the four fixed plates 334 are moved. The movement of the fixed plates 334 will drive the rectangular plate 1 350 or the rectangular plate 2 360 to move, so as to facilitate the adjustment of the position of the rectangular plate 1 350 and the rectangular plate 2 360. The movement of the two rectangular plates 1 350 and the two rectangular plates 2 360 will push the four connecting plates 320 to move, so that the four connecting plates 320 move to the appropriate position, and the rubber sleeve 321 and the four rubber pads 370 are squeezed and contacted with the inner wall of the mine hole, so as to prevent the slurry from flowing out of the gap between the blocking mechanism 300 and the mine hole, and ensure the grouting effect during filling. By adjusting the positions of the four connecting plates 320, the two rectangular plates 1 350 and the two rectangular plates 2 360, the blocking mechanism 300 can be applied to mine holes of different specifications, thereby improving the practicality of the grouting device for filling coal mine goafs.

[0019] The method for using the grouting device for filling the coal mine goaf includes the following steps: Step 1: When in use, use multiple flanges 230 and bolts to connect and fix the delivery pipe 1 210 and multiple delivery pipes 220, and connect the top flange 230 with the flange 131 by bolts, and open a circular hole on the top rectangular plate 2 360 so that one end of the delivery pipe 1 210 is fixedly connected to the inner wall of the circular hole, thereby completing the installation of the delivery mechanism 200; Step 2: The threaded holes on the L-shaped plate 340 are used to fix the L-shaped plate 340 on the coal mine vehicle, and the height of the rectangular shell 330, the baffle 310 and the adjustment assembly are adjusted by starting the oil cylinder 342. The two motors 381 are started to rotate the two round tubes 331 and the four screws 332, so that the fixed plate 334, the rectangular plate 1 350 or the rectangular plate 2 360 are moved. The movement of the two rectangular plates 1 350 and the two rectangular plates 2 360 will push the four connecting plates 320 to move, so that the four connecting plates 320 are moved to the appropriate position, and the rubber sleeve 321 and the four rubber pads 370 are squeezed and contacted with the inner wall of the mine hole; Step three: Use the feed pipe 120 to facilitate the transportation of slurry into the storage tank 110, and use the connecting pipe 130 and the flange 131 to facilitate the transportation of the slurry to the inside of the conveying mechanism 200, and by starting the motor 150, the stirring frame 140 rotates to stir the slurry inside the storage tank 110, and then use the conveying mechanism 200 to facilitate the transportation of the slurry to one side of the blocking mechanism 300, and use the blocking mechanism 300 to facilitate the blocking of the slurry so that the slurry can accumulate and solidify at a specific position. After the slurry in one place solidifies, remove a section of the conveying pipe 220, connect the conveying pipe 1 210 with the corresponding conveying pipe 220, and then move the blocking mechanism 300, so as to facilitate the filling and grouting of the next place.

[0020] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0021] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A grouting device for filling coal mine goaf, characterized in that: include: Support frame (100); A material storage tank (110), the bottom of which is fixedly connected to the top of the inner wall of the support frame (100), and a stirring assembly is provided inside the material storage tank (110); A feed pipe (120), the bottom of which is connected and fixed to the top of the storage tank (110); A connecting pipe (130), the top of which is connected and fixed to the bottom of the storage tank (110), and the bottom of the connecting pipe (130) is fixedly connected to a flange plate 1 (131); A conveying mechanism (200) is arranged at the bottom of the flange plate 1 (131); The material blocking mechanism (300) is arranged at one end of the conveying mechanism (200).

2. The grouting device for filling coal mine goaf according to claim 1, characterized in that: The stirring assembly comprises: A stirring frame (140), the top of which is rotatably connected to the inner top surface of the storage tank (110); Motor 1 (150) is fixedly connected to the top of the material storage tank (110); an output end of motor 1 (150) passes through the side wall of the material storage tank (110) and is fixedly connected to the top of the stirring frame (140).

3. The grouting device for filling coal mine goaf according to claim 1, characterized in that: The conveying mechanism (200) comprises a conveying pipe 1 (210), one end of which is provided with a plurality of conveying pipes 2 (220), and one end of the conveying pipe 1 (210) and both ends of the plurality of conveying pipes 2 (220) are fixedly connected with flanges 2 (230).

4. The grouting device for filling coal mine goaf according to claim 1, characterized in that: The material blocking mechanism (300) comprises a baffle (310), both ends of one side of the baffle (310) are provided with a rectangular groove 1 (311), and the top and bottom of one side of the baffle (310) are provided with a rectangular groove 2 (312), an adjustment component is arranged on the outer side of the baffle (310), and a support component is arranged at the bottom of the adjustment component.

5. The grouting device for filling coal mine goaf according to claim 4, characterized in that: The adjustment component comprises: Four connecting plates (320) are respectively arranged at four corners of one side of the baffle (310); outer side walls of the four connecting plates (320) are sleeved and fixed with rubber sleeves (321); and both ends of one side of the connecting plates (320) are fixedly connected with sliders (322); A rectangular shell (330) is fixedly connected to one side of the baffle (310), and four adjacent side walls of the rectangular shell (330) are slidably connected to moving rods (333), and a threaded hole is opened at the middle position of the moving rod (333), and a fixing plate (334) is fixedly connected to the outer side of the moving rod (333); Two rectangular plates (350) are respectively slidably connected to the inside of the two rectangular grooves (311), and two ends of one side of the rectangular plate (350) are provided with a sliding groove (351); The two rectangular plates (360) are respectively slidably connected to the inside of the two rectangular grooves (312); two ends of one side of the rectangular plate (360) are provided with two slide grooves (361); and the four slide grooves (361) and the four slide grooves (351) are respectively slidably connected to the sliders (322) at the corresponding positions; one side of the two rectangular plates (360) and the two rectangular plates (350) are respectively fixedly connected to the fixed plates (334) at the corresponding positions.

6. The grouting device for filling coal mine goaf according to claim 5, characterized in that: Two staggered circular tubes (331) are arranged inside the rectangular shell (330), and the outer walls of the circular tubes (331) are sleeved and fixed with support plates (335), and one end of the support plate (335) is fixedly connected to the inner wall of the rectangular shell (330). Screws (332) are sleeved and fixed inside the two ends of the circular tubes (331), and one end of the screws (332) is respectively screwed and connected with threaded holes at corresponding positions. The outer side of the circular tube (331) is provided with A second support plate (380) is provided, and one end of the second support plate (380) is fixedly connected to the inner wall of the rectangular shell (330); a second motor (381) is fixedly connected to one side of the second support plate (380), and a round block (382) is fixedly connected to the output end of the second motor (381); the outer walls of the two circular tubes (331) and the two round blocks (382) are both sleeved and fixed with the round blocks (382), and a belt (391) is connected between two adjacent round blocks (382) for transmission.

7. The grouting device for filling coal mine goaf according to claim 4, characterized in that: The support assembly comprises an L-shaped plate (340), both ends of the inner bottom surface of the L-shaped plate (340) are fixedly connected with a telescopic plate (341), and the top of the telescopic plate (341) is fixedly connected to the bottom of the rectangular shell (330), and the outer sides of the two telescopic plates (341) are provided with a cylinder (342), and one end and an output end of the cylinder (342) are fixedly connected with a rotating block (343), and the outer side wall of the rotating block (343) is rotatably connected with a rotating seat (344), an inner side wall of the L-shaped plate (340) and the bottom of the rectangular shell (330) are respectively fixedly connected to the rotating seat (344) at corresponding positions, and a plurality of bolt holes are opened on one side of the L-shaped plate (340).

8. The method for using the grouting device for filling coal mine goaf according to any one of claims 1 to 7, characterized in that: The method of use specifically comprises the following steps: Step 1: When in use, use multiple flanges (230) and bolts to connect and fix the delivery pipe (210) and multiple delivery pipes (220), and connect the top flange (230) with the flange (131) by bolts, and open a circular hole on the top rectangular plate (360) so that one end of the delivery pipe (210) is fixedly connected to the inner wall of the circular hole, thereby completing the installation of the delivery mechanism (200); Step 2: The threaded holes on the L-shaped plate (340) are used to fix the L-shaped plate (340) on the coal mine vehicle, and the height of the rectangular shell (330), the baffle (310) and the adjustment assembly are adjusted by starting the oil cylinder (342). The two motors (381) are started to rotate the two round tubes (331) and the four screws (332), so that the fixed plate (334), the rectangular plate 1 (350) or the rectangular plate 2 (360) are moved. The movement of the two rectangular plates 1 (350) and the two rectangular plates 2 (360) will push the four connecting plates (320) to move, so that the four connecting plates (320) are moved to appropriate positions, and the rubber sleeve (321) and the four rubber pads (370) are squeezed and contacted with the inner wall of the mine hole. Step three: using the feed pipe (120) to facilitate the conveying of slurry into the storage tank (110), and using the connecting pipe (130) and the flange plate (131) to facilitate the conveying of the slurry into the conveying mechanism (200), and by starting the motor (150), the stirring frame (140) is rotated to stir the slurry inside the storage tank (110), and then using the conveying mechanism (200) to facilitate the conveying of the slurry to one side of the blocking mechanism (300), and using the blocking mechanism (300) to facilitate the blocking of the slurry, so that the slurry can accumulate and solidify at a specific position, and when the slurry in one place solidifies, by removing a section of the conveying pipe (220), and connecting the conveying pipe (210) to the corresponding conveying pipe (220), and then moving the blocking mechanism (300), it is convenient to fill and grout the next place.

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