Coal mine overlying strata separation layer grouting device and process

Abstract

The invention relates to the technical field of coal mines, and discloses a coal mine overlying strata separation layer grouting device and a coal mine overlying strata separation layer grouting process. The coal mine overlying strata separation layer grouting device comprises a quaternary unconsolidated formation, a rock stratum is arranged below the quaternary unconsolidated formation, and an overlying strata separation layer space is arranged below a key layer with large thickness and high strength in the rock stratum; drilling grooves communicating with the overlying strata separation space are formed in the quaternary unconsolidated formation and the rock stratum, mounting grooves communicating with the drilling grooves are formed in the top end of the quaternary unconsolidated formation, a sleeve is inserted into the drilling grooves in a penetrating mode, the bottom end of the sleeve extends into the overlying strata separation space, and a grouting auxiliary assembly is installed at the inner bottom end of the sleeve; a stabilizing assembly connected with the mounting groove is mounted at the top end of the sleeve; through the design of the stabilizing assembly, the sleeve can be fixedly installed, the problem that grouting is interrupted due to the fact that the sleeve moves upwards due to the fact that the internal air pressure is increased when grouting is conducted in the overlying strata separation layer space is solved, and the grouting stability and the grouting safety are improved.

Description

Technical Field

[0001] The invention relates to the field of coal mines, and in particular to a coal mine overburden separation grouting device and process. Background Art

[0002] With the rapid development of my country's economy, the demand for coal resources has increased dramatically. Deep coal resource mining has become the norm. The ecological and environmental problems such as surface subsidence, groundwater system damage, and gangue discharge caused by large-scale mining have become increasingly prominent. In recent years, overburden separation grouting technology has become one of the effective technical ways to solve the above problems. Overburden separation grouting is to make full use of the overburden separation space after coal seam mining, and drill holes on the ground to the separation layer for grouting filling. The space from the surface to the overburden separation layer is mainly the Quaternary loose layer, bedrock (rock layer), and overburden separation layer. Then the filling material is injected into the overburden separation space through the ground drilling hole to slow down the bending and sinking of the rock layer and reduce surface subsidence. It effectively realizes the parallel operation of underground mining and ground grouting filling without interfering with each other. It has the characteristics of low cost, high coal recovery rate and production efficiency, and is suitable for high production capacity.

[0003] The grouting devices currently on the market are a process of placing the casing into the overburden delamination zone. Most of them first use a drilling machine to drill a groove of the same size as the casing in the ground, and then place the casing into the groove through a lifting device, and then inject grouting material into the casing to fill it in the overburden delamination zone. However, as the amount of grouting material increases, the air pressure increases, which can easily cause the casing to move up from the groove, easily injuring construction workers, posing a safety hazard, and at the same time causing the grouting work to be interrupted, which in turn affects the grouting efficiency. Summary of the invention

[0004] In order to solve the technical problem that when filling grouting material into the overburden delamination zone, as the grouting material increases, the air pressure increases, which may easily cause the casing to move up from the trough body, easily injuring the construction personnel, posing a safety hazard, and at the same time causing the grouting work to be interrupted, thereby affecting the grouting efficiency, the present invention provides a coal mine overburden delamination grouting device and process.

[0005] The present invention is implemented by the following technical scheme: a coal mine overburden separation grouting device, comprising a quaternary loose layer, a rock layer is arranged below the quaternary loose layer, an overburden separation space is arranged below a key layer with large thickness and high strength in the rock layer, a drilling groove connected to the overburden separation space is opened on the quaternary loose layer and the rock layer, a mounting groove connected to the drilling groove is opened at the top of the quaternary loose layer, a casing is inserted into the inside of the drilling groove, the bottom end of the casing extends to the inside of the overburden separation space, a grouting auxiliary component is installed at the inner bottom end of the casing, and a stabilizing component connected to the mounting groove is installed at the top of the casing;

[0006] The stabilizing component includes an installation box fixedly sleeved on the top of the outer wall of the sleeve and located inside the installation groove, the bottom end of the installation groove is provided with card slots at equal distances, the bottom end of the installation box is fixedly connected with a card block inserted into the card slot, the interior of the installation box is provided with two symmetrically arranged accommodating cavities, the outer wall of the installation box is symmetrically provided with through holes, the interior of the accommodating cavity is provided with a plug rod that penetrates the inside of the through hole and is connected to the side wall of the installation groove, the installation box is provided with a lateral moving mechanism connected to the plug rod, and the interior of the sleeve is provided with a driving mechanism connected to the lateral moving mechanism.

[0007] As a further improvement of the above scheme, the lateral moving mechanism includes a sliding opening symmetrically opened at the top of the installation box and connected to the accommodating cavity, a push rod connected to the side wall of the plug-in rod is slidably installed inside the accommodating cavity, the push rod passes through the sliding opening and extends to the top of the fourth series loose layer, the top of the push rod is fixedly connected to a push plate that slides on the top of the fourth series loose layer, a stabilizing rod is fixedly connected to the side of the side wall of the accommodating cavity away from the through hole, and the inner wall of the installation box and the push rod are connected by a spring sleeved on the outer wall of the stabilizing rod.

[0008] As a further improvement of the above scheme, the driving mechanism includes a threaded groove opened on the inner wall of the top end of the sleeve, a rotating cylinder is inserted into the inner wall of the sleeve, a diffusion mask is fixedly connected to the top end of the rotating cylinder, one end of the push plate slides in contact with the outer wall of the diffusion mask, the vertical section of the diffusion mask is a funnel-shaped structure, a rotating ring is fixedly connected to the top end of the diffusion mask, the rotating ring and the push plate are connected by a plug-in connector, and the bottom end of the outer wall of the rotating cylinder is fixedly connected to an external threaded ring threadedly connected to the threaded groove.

[0009] As a further improvement of the above scheme, the connector includes a stabilizing ring fixed to the bottom end of the rotating ring, and a magnetic piece 1 is symmetrically installed at the bottom end of the stabilizing ring. A stabilizing groove is provided at the top of the two push plates, and the stabilizing ring extends to the inside of the stabilizing groove, and a magnetic piece 2 connected to the magnetic piece 1 is provided at the bottom end of the stabilizing groove.

[0010] As a further improvement of the above scheme, the grouting auxiliary component includes an auxiliary tube inserted into the bottom end of the inner wall of the casing, the auxiliary tube is threadedly connected to the inner wall of the casing, a base is fixedly connected to the middle position of the bottom end of the auxiliary tube, two symmetrically arranged discharge ports are provided between the inner wall of the auxiliary tube and the base, an anti-blocking mechanism is provided at the bottom end of the discharge port, and a pushing mechanism is provided inside the auxiliary tube.

[0011] As a further improvement of the above scheme, the anti-blocking mechanism includes a base symmetrically fixed to the bottom end of the base, a sealing plate is rotatably connected to the base, the bottom end of the auxiliary tube is symmetrically provided with a locking plate connected to the side wall of the sealing plate, and the top end of the sealing plate is connected to a spring 2 fixed to the side wall of the base.

[0012] As a further improvement of the above scheme, the pushing mechanism includes a fixed rod rotatably installed on the top end of the auxiliary tube side wall, the outer wall of the fixed rod is sleeved with a protective box, the fixed rod is fixedly sleeved with a bevel gear 1 located inside the protective box, a stirring shaft is rotatably installed on the top end of the protective box, a spiral blade is fixedly connected to the top of the outer wall of the stirring shaft, the bottom end of the stirring shaft is fixedly connected to a bevel gear 2 meshing with the bevel gear 1, the outer wall of the stirring shaft is fixedly connected to a guide plate located above the protective box, the bottom end of the guide plate is fixedly connected to a symmetrically arranged sliding column, and the sliding column is in sliding contact with the top surface of the protection box, the outer wall of the fixed rod is symmetrically fixed with rotating blades located on both sides of the protection box, cams are symmetrically installed on the fixed rod, the cams are located between the rotating blades and the protection box, and the bottom end of the protection box is provided with a stirring mechanism in contact with the cam.

[0013] The top end of the lifting cylinder is connected with the upper end of the lifting cylinder to the upper end of the lifting cylinder, and the upper end of the lifting cylinder is connected with the lower end of the lifting cylinder to the upper end of the lifting cylinder.

[0014] As a further improvement of the above scheme, the rotating unit includes a fixed seat fixedly connected to the middle position inside the lifting cylinder, a T-shaped rotating rod is rotatably installed on the fixed seat, the T-shaped rotating rod extends to the interior of the connecting cylinder, the rotating cylinder is sleeved on the bottom end of the T-shaped rotating rod, and the inner walls of the connecting cylinder and the rotating cylinder are symmetrically provided with limiting grooves, the top and bottom ends of the T-shaped rotating rod are symmetrically fixed with limiting blocks, the limiting blocks slide on the inner walls of the limiting grooves, and the limiting blocks and the limiting grooves are both rectangular structures.

[0015] The present invention also provides a process for a coal mine overburden separation grouting device, comprising the coal mine overburden separation grouting device as described above, comprising the following steps:

[0016] Step 1: The staff drills holes on the quaternary loose layer through drilling equipment to obtain a drilling slot, and opens an installation slot and a card slot on the top of the quaternary loose layer, then installs an auxiliary pipe on the bottom end of the casing by thread, and then inserts the casing into the drilling slot. Through the connection relationship of the spring 2, the sealing plate will be blocked at the bottom end of the discharge port, so that the sealing plate can block the discharge port, so that the soil and sand inside the drilling slot can be prevented from entering the casing during the downward movement of the casing to cause the discharge port to be blocked;

[0017] Step 2: Make the installation box outside the sleeve be located at the bottom of the installation slot, and insert the card block at the bottom of the installation box into the card slot;

[0018] Step 3: Twist the rotating ring, the rotating ring will drive the expansion housing to rotate, the expansion housing will drive the rotating cylinder to rotate, the rotating cylinder will drive the external thread ring to rotate, through the threaded connection between the external thread ring and the thread groove, the external thread ring will move down, and the external thread ring will drive the lifting cylinder, the expansion housing and the rotating ring to move down synchronously;

[0019] Step 4: Since the expansion housing is a funnel-shaped structure and the outer wall of the expansion housing contacts the end of the push plate, the push plate will be pushed to move horizontally during the downward movement of the expansion housing, and the two push plates will move away from each other. The push plate will drive the push rod to slide on the inner wall of the sliding mouth, and the push rod will drive the plug rod to move horizontally, so that the plug rod passes through the through hole and is plugged into the side wall of the installation groove, so as to achieve the fixed connection between the plug rod and the fourth system loose layer;

[0020] Step 5: As the expansion mask continues to move downward, the push plate will contact the top of the outer wall of the expansion mask. Since the top of the outer wall of the expansion mask is in a vertical state, the push plate will remain stationary as the expansion mask continues to move downward.

[0021] Step 6: The expansion housing will drive the stabilizing ring to move downward through the rotating ring, and insert the stabilizing ring into the stabilizing groove. At the same time, the stabilizing ring will drive the magnetic sheet 1 to be adsorbed and connected with the magnetic sheet 2, thereby realizing the connection between the rotating ring and the push plate, and realizing the stable installation of the sleeve;

[0022] Step 7: Then, grouting is performed inside the casing through the rotating ring. The grouting material falls on the rotating blades to make them rotate, and the rotating blades drive the fixed rods to rotate. The fixed rods drive the bevel gear 1 to rotate. Through the meshing connection relationship between the bevel gear 1 and the bevel gear 2, the stirring shaft is rotated, and then the stirring shaft drives the spiral blades to rotate continuously in the casing, so that the spiral blades can continuously move the grouting material.

[0023] Step 8: The rotation of the rotating blade will drive the fixed rod to rotate, which will cause the fixed rod to drive the cam to rotate. When the long end of the outer wall of the cam rotates downward, the outer wall of the cam will contact the top of the lifting cylinder and move the lifting cylinder downward, thereby stretching the spring three.

[0024] Step 9: The lifting cylinder will drive the slideway to slide on the slide rod, and at the same time, the lifting cylinder will drive the sleeve seat to move downward, and the sleeve seat will drive the inclined rod to move downward synchronously, and then the inclined rod will drive the movable rod to move downward synchronously, so that the movable rod will slide inside the rectangular opening, and the movable rod will drive the swing rod to swing;

[0025] Step 10: The swing rod drives the stirring blades to approach the inner wall of the auxiliary tube. When the long end of the outer wall of the cam rotates upward, the lifting cylinder moves upward under the elastic force of the spring 3, and then the stirring blades move away from the inner wall of the auxiliary tube.

[0026] Step 11: The rotation of bevel gear 1 will drive bevel gear 2 to rotate, bevel gear 2 will drive the connecting tube to rotate, through the connection relationship between the limit groove and the limit block, the connecting tube will drive the T-shaped rotating rod to rotate, the T-shaped rotating rod will drive the rotating tube to rotate, and the rotating tube will drive the rotating seat to rotate;

[0027] Step 11: The rotation of the rotating seat will drive the swing rod, rectangular mouth, movable rod and stirring blades to rotate synchronously, realizing circular rotation of the stirring blades, so that the stirring blades can perform circular stirring in the process of lateral swinging and material transfer, thereby achieving sufficient stirring of the grouting material.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. The present invention can realize support and limit of the installation box through the design of the card block and the card slot, avoid the rotation of the installation box when the casing is fixedly installed, and affect its installation speed. Through the design of the stabilizing component, the fixed installation of the casing can be realized, and the problem of grouting interruption caused by the upward movement of the casing due to the increase of internal air pressure when grouting into the overburden rock separation space is solved, and the grouting stability and grouting safety are improved. In addition, with the design of the grouting auxiliary component, it is convenient to continuously stir the grouting material inside the casing, and avoid the possibility of grouting material overflowing due to instantaneous blockage due to poor circulation when the grouting material flows. Therefore, the present design realizes the protection of the grouting material, effectively maintains the grouting patency inside the casing, and thus improves the grouting speed of the grouting material;

[0030] 2. Through the design of the connector, it is convenient to make the magnetic sheet 1 and the magnetic sheet 2 adsorb and connect, thereby realizing the longitudinal connection between the rotating ring and the push plate, and realizing the lateral positioning of the push plate, effectively avoiding the displacement of the push plate, thereby improving the installation stability of the sleeve;

[0031] 3. Through the design of the anti-blocking mechanism, the sealing plate can block the discharge port, so that the soil and sand inside the drilling slot can be prevented from entering the casing during the downward movement of the casing to cause the discharge port to be blocked, thereby facilitating the grouting operation. During the grouting, the sealing plate will be tilted to open the discharge port, which is convenient for the grouting material to fall into the overburden separation layer space, providing convenience for the grouting operation of the overburden separation layer. This design facilitates the blocking of the bottom of the casing when grouting is not carried out, and the opening of the casing during grouting, which effectively facilitates the grouting operation;

[0032] 4. The design of the pushing mechanism makes it easy to continuously stir the grouting material, which can effectively improve the quality of the grouting material and solve the problem of grouting material overflow caused by instantaneous blockage due to poor flow of the grouting material during grouting. It effectively protects the grouting material and maintains the smoothness of the grouting, thereby effectively improving the grouting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A schematic diagram of the overall structure of a coal mine overburden separation grouting device provided in Example 1 of the present invention;

[0034] Figure 2 This is the connection diagram between the grouting auxiliary component and the casing;

[0035] Figure 3 for Figure 1 The enlarged structural diagram at A in the middle;

[0036] Figure 4 It is a structural schematic diagram of the grouting auxiliary component;

[0037] Figure 5 is a top view of the bottom end of the auxiliary pipe;

[0038] Figure 6 It is a partial side sectional view of the stirring mechanism;

[0039] Figure 7 It is the main cross-sectional view of the stirring mechanism;

[0040] Figure 8 for Figure 4 The enlarged structural diagram at B in the middle;

[0041] Fig. 9 A partial schematic diagram of a stabilizing component.

[0042] Description of main symbols:

[0043] 1. Quaternary loose layer; 2. Rock layer; 3. Overburden separation space; 4. Drilling slot; 5. Installation slot; 6. Casing; 7. Installation box; 8. Card slot; 9. Card block; 10. Auxiliary pipe; 11. Base; 12. Discharge port; 13. Rotating cylinder; 14. Drilling cover; 15. Rotating ring; 16. External thread ring; 17. Thread groove; 18. Push rod; 19. Sliding mouth; 20. Stabilizing rod; 21. Spring 1; 22. Push plate; 23. Through hole; 24. Connecting rod; 25. Stabilizing ring; 26. Magnetic piece 1; 27. Stabilizing slot; 28. Magnetic piece 2; 29. ​​Base; 30. Sealing plate; 31. Lock Plate; 32. Spring 2; 33. Fixed rod; 34. Protection box; 35. Rotating blade; 36. Cam; 37. Bevel gear 1; 38. Stirring shaft; 39. Spiral blade; 40. Bevel gear 2; 41. Guide plate; 42. Connecting cylinder; 43. Lifting cylinder; 44. Spring 3; 45. Fixed seat; 46. T-shaped rotating rod; 47. Rotating cylinder; 48. Sliding rod; 49. Slide; 50. Connecting seat; 51. Rotating seat; 52. Swinging rod; 53. Stirring blade; 54. Socket seat; 55. Oblique rod; 56. Rectangular opening; 57. Movable rod; 58. Limit block; 59. Limit groove. DETAILED DESCRIPTION

[0044] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0045] Embodiment 1:

[0046] Please combine Figures 1 to 9A coal mine overburden separation grouting device of the present embodiment comprises a quaternary loose layer 1, a rock layer 2 is arranged below the quaternary loose layer 1, an overburden separation space 3 is arranged below a key layer with large thickness and high strength in the rock layer 2, a drilling groove 4 connected with the overburden separation space 3 is opened on the quaternary loose layer 1 and the rock layer 2, a mounting groove 5 connected with the drilling groove 4 is opened at the top of the quaternary loose layer 1, a casing 6 is inserted into the inside of the drilling groove 4, the bottom end of the casing 6 extends to the inside of the overburden separation space 3, a grouting auxiliary component is installed at the inner bottom end of the casing 6, and a stabilizing component connected with the mounting groove 5 is installed at the top of the casing 6; a worker drills a hole in the quaternary loose layer 1 by a drilling device to obtain the drilling groove 4, and opens a mounting groove 5 and a clamping groove 8 at the top of the quaternary loose layer 1, then installs the grouting auxiliary component at the bottom of the casing 6, and then After that, the casing 6 is inserted into the drilling groove 4, and the installation box 7 on the outer wall of the casing 6 is located at the bottom of the installation groove 5, and the block 9 at the bottom of the installation box 7 is inserted into the card groove 8 to support and limit the installation box 7, avoid the rotation of the installation box 7 when the casing 6 is fixedly installed and affect its fixing speed, thereby realizing the fixed installation of the casing 6, solving the problem that the internal air pressure increases and the casing 6 moves upward when grouting into the overburden delamination space 3 through the casing 6, thereby improving the grouting stability, and cooperating with the design of the grouting auxiliary component, it is convenient to continuously stir the grouting material inside the casing 6, avoiding the possibility of grouting material overflowing due to instantaneous blockage due to poor circulation during the flow of the grouting material, thereby realizing the protection of the grouting material, effectively maintaining the grouting unobstructedness inside the casing 6, thereby improving the grouting speed of the grouting material.

[0047] The stabilizing component includes an installation box 7 fixedly sleeved on the top of the outer wall of the sleeve 6 and located inside the installation groove 5, the bottom end of the installation groove 5 is provided with a card slot 8 at equal distances, the bottom end of the installation box 7 is fixedly connected with a card block 9 inserted into the card slot 8, the interior of the installation box 7 is provided with two symmetrically arranged accommodating cavities, the outer wall of the installation box 7 is symmetrically provided with through holes 23, the interior of the accommodating cavity is provided with a plug rod 24 that penetrates the inside of the through hole 23 and is connected to the side wall of the installation groove 5, the installation box 7 is provided with a lateral movement mechanism connected to the plug rod 24, and the interior of the sleeve 6 is provided with a driving mechanism connected to the lateral movement mechanism;

[0048] The staff inserts the card block 9 at the bottom of the installation box 7 into the card slot 8 to realize the support of the installation slot 5 for the installation box 7, and then rotates the driving mechanism. The downward movement of the driving mechanism will push the lateral moving mechanism to slide horizontally to both sides and move away from each other, which will make the connecting rod 24 pass through the through hole 23 and insert into the side wall of the installation slot 5, so that the installation box 7 is fixedly installed in the installation slot 5, and then the sleeve 6 is fixed, so as to avoid the interruption of grouting caused by the upward movement of the sleeve 6 due to the increase of air pressure during grouting, thereby effectively realizing the stability of grouting.

[0049] The lateral movement mechanism includes a sliding opening 19 symmetrically opened at the top of the installation box 7 and connected to the accommodating cavity. A push rod 18 connected to the side wall of the plug rod 24 is slidably installed inside the accommodating cavity. The push rod 18 passes through the sliding opening 19 and extends to the top of the fourth system loose layer 1. The top of the push rod 18 is fixedly connected to a push plate 22 that slides on the top of the fourth system loose layer 1. A stabilizing rod 20 is fixedly connected to the side of the accommodating cavity side wall away from the through hole 23. A spring sleeved on the outer wall of the stabilizing rod 20 is provided between the inner wall of the installation box 7 and the push rod 18. A 21 connection, the driving mechanism includes a threaded groove 17 opened on the inner wall of the top end of the sleeve 6, the inner wall of the sleeve 6 is inserted with a rotating cylinder 13, the top of the rotating cylinder 13 is fixedly connected with a diffusion cover 14, one end of the push plate 22 is in sliding contact with the outer wall of the diffusion cover 14, the vertical section of the diffusion cover 14 is a funnel-shaped structure, the top of the diffusion cover 14 is fixedly connected with a rotating ring 15, the rotating ring 15 and the push plate 22 are connected by a plug-in connector, and the bottom end of the outer wall of the rotating cylinder 13 is fixedly connected with an external threaded ring 16 threadedly connected to the threaded groove 17.

[0050] The staff twists the rotating ring 15, the rotating ring 15 will drive the expansion mask 14 to rotate, the expansion mask 14 drives the rotating cylinder 13 to rotate, the rotating cylinder 13 drives the external thread ring 16 to rotate, and the threaded connection relationship between the external thread ring 16 and the thread groove 17 will cause the external thread ring 16 to move downward, and the external thread ring 16 will drive the lifting cylinder 43, the expansion mask 14 and the rotating ring 15 to move downward synchronously. Since the expansion mask 14 is a funnel-shaped structure, and the outer wall of the expansion mask 14 contacts the end of the push plate 22, the push plate 22 will be pushed to move horizontally during the downward movement of the expansion mask 14, and the two push plates 22 will move away from each other, and the push plate 22 will drive the push rod 18 to slide on the inner wall of the sliding mouth 19, and then the push rod 18 will drive the plug rod 24 to move horizontally, so that the plug rod 24 passes through the through hole 23 and is plugged into the side wall of the installation groove 5, so as to realize the fixed connection between the plug-in rod 24 and the fourth system loose layer 1. At the same time, as the expansion mask 14 continues to move downward, the push plate 22 will contact the top of the outer wall of the expansion mask 14. Since the top of the outer wall of the expansion mask 14 is in a vertical state, the push plate 22 will remain stationary during the process of the expansion mask 14 continuing to move downward. Then, the expansion mask 14 will drive the stabilizing ring 25 to move downward through the rotating ring 15, and the stabilizing ring 25 will be inserted into the stabilizing groove 27. At the same time, the stabilizing ring 25 will drive the magnetic piece 1 26 to be adsorbed and connected with the magnetic piece 2 28, so as to realize the connection between the rotating ring 15 and the push plate 22, realize the stable installation of the sleeve 6, and effectively avoid the longitudinal movement of the sleeve 6 during grouting, thereby improving the grouting stability.

[0051] The connector includes a stabilizing ring 25 fixed to the bottom end of the rotating ring 15, and a magnetic piece 26 is symmetrically installed at the bottom end of the stabilizing ring 25. A stabilizing groove 27 is provided at the top end of the two push plates 22. The stabilizing ring 25 extends to the inside of the stabilizing groove 27, and a magnetic piece 28 connected to the magnetic piece 1 26 is provided at the bottom end of the stabilizing groove 27. When the rotating ring 15 moves downward, the stabilizing ring 25 will be driven downward, and then the stabilizing ring 25 will move to the inside of the stabilizing groove 27, and the magnetic piece 1 26 at the bottom end of the stabilizing ring 25 will be adsorbed and connected with the magnetic piece 2 28 inside the stabilizing groove 27, so as to realize the longitudinal connection between the rotating ring 15 and the push plate 22, and at the same time realize the lateral positioning of the push plate 22, effectively avoiding the displacement of the push plate 22, and thus improving the installation stability of the sleeve 6.

[0052] The grouting auxiliary component includes an auxiliary tube 10 inserted into the bottom end of the inner wall of the casing 6, the auxiliary tube 10 is threadedly connected to the inner wall of the casing 6, a base 11 is fixedly connected to the middle position of the bottom end of the auxiliary tube 10, two symmetrically arranged discharge ports 12 are arranged between the inner wall of the auxiliary tube 10 and the base 11, an anti-blocking mechanism is arranged at the bottom end of the discharge port 12, a pushing mechanism is arranged inside the auxiliary tube 10, the anti-blocking mechanism includes a base 29 symmetrically fixed to the bottom end of the base 11, a sealing plate 30 is rotatably connected to the base 29, a locking plate 31 connected to the side wall of the sealing plate 30 is symmetrically arranged at the bottom end of the auxiliary tube 10, and a spring 32 fixed to the side wall of the base 11 is connected to the top of the sealing plate 30.

[0053] The staff will thread the auxiliary pipe 10 on the inner bottom end of the casing 6, and then insert the casing 6 into the interior of the drilling groove 4. Due to the connection relationship through the spring 2 32, the sealing plate 30 will block the bottom end of the discharge port 12, so that the sealing plate 30 can block the discharge port 12 during the downward movement of the casing 6 to prevent the soil and sand inside the drilling groove 4 from entering the casing 6 and causing the discharge port 12 to be blocked, thereby providing convenience for the grouting operation. At the same time, after the grouting material enters the auxiliary pipe 10, the weight of the grouting material and the falling speed will cause the sealing plate 30 to tilt to open the discharge port 12, thereby facilitating the grouting material to fall into the overburden delamination space 3, realizing the grouting operation of the overburden delamination space 3, and through the design of the pushing mechanism, it is convenient to continuously stir the grouting material, which can improve the quality of the grouting material, and solve the problem of grouting material overflow caused by instantaneous blockage of the grouting material due to poor circulation of the grouting material during grouting, effectively realizing the protection of the grouting material, and thus improving the grouting efficiency.

[0054] The pushing mechanism includes a fixed rod 33 rotatably mounted on the top of the side wall of the auxiliary pipe 10, the outer wall of the fixed rod 33 is sleeved with a protection box 34, a bevel gear 1 37 located inside the protection box 34 is fixedly sleeved on the fixed rod 33, a stirring shaft 38 is rotatably mounted on the top of the protection box 34, a spiral blade 39 is fixedly connected to the top of the outer wall of the stirring shaft 38, a bevel gear 2 40 meshing with the bevel gear 1 37 is fixedly connected to the bottom end of the stirring shaft 38, a guide plate 41 located above the protection box 34 is fixedly connected to the outer wall of the stirring shaft 38, a symmetrically arranged sliding column is fixedly connected to the bottom end of the guide plate 41, and the sliding column is in sliding contact with the top surface of the protection box 34, the outer wall of the fixed rod 33 is symmetrically fixed with rotating blades 35 located on both sides of the protection box 34, a cam 36 is symmetrically mounted on the fixed rod 33, the cam 36 is located between the rotating blade 35 and the protection box 34, and a stirring mechanism in contact with the cam 36 is provided at the bottom end of the protection box 34;

[0055] After the staff injects grout into the inside of the casing 6 through the rotating ring 15, the grouting material will fall and cause the rotating blades 35 to rotate, and the rotating blades 35 will drive the fixed rod 33 to rotate, and the fixed rod 33 will drive the bevel gear 1 37 to rotate. Through the meshing connection relationship between the bevel gear 1 37 and the bevel gear 2 40, the stirring shaft 38 and the stirring mechanism will rotate synchronously, and then the stirring shaft 38 will drive the spiral blades 39 to rotate continuously in the casing 6, so that the spiral blades 39 can continuously stir the grouting material to avoid blockage when the grouting material flows, thereby improving the grouting efficiency.

[0056] The stirring mechanism includes a connecting cylinder 42 rotatably mounted on the bottom end of the protection box 34, the top end of the connecting cylinder 42 is meshed and connected with the bevel gear 1 37 through the bevel gear 2 40, the outer sleeve of the connecting cylinder 42 is provided with a lifting cylinder 43, the outer sleeve of the connecting cylinder 42 is provided with a spring 3 44 fixed to the bottom end of the protection box 34 and the top end of the lifting cylinder 43, the outer wall of the lifting cylinder 43 is symmetrically provided with a slide 49, the inner wall of the auxiliary pipe 10 is symmetrically provided with a slide rod 48 extending to the inner wall of the slide 49, one end of the slide rod 48 slides with the inner wall of the slide 49, the outer wall bottom end of the lifting cylinder 43 is rotatably provided with a sleeve seat 54, the sleeve seat The outer wall of 54 is symmetrically fixed with inclined rods 55, and the bottom ends of the inclined rods 55 are fixed with movable rods 57. The bottom end of the lifting cylinder 43 is inserted with a rotating cylinder 47 located below the fixed seat 45. The top of the base 11 is fixed with a connecting seat 50 rotatably connected to the bottom end of the sleeve seat 54. The outer wall of the rotating cylinder 47 is fixedly sleeved with a rotating seat 51, and the outer wall of the rotating seat 51 is rotatably installed with a swing rod 52, one end of the swing rod 52 is connected to a stirring blade 53, and a rectangular opening 56 is opened on the rectangular opening 56 which is slidably connected to the movable rod 57. The top of the rotating cylinder 47 and the connecting cylinder 42 are connected through a rotating unit.

[0057] The rotation of the rotating blade 35 will drive the fixed rod 33 to rotate, and the fixed rod 33 will drive the cam 36 to rotate. When the long end of the outer wall of the cam 36 rotates downward, the outer wall of the cam 36 will contact the top of the lifting cylinder 43, and the lifting cylinder 43 will move downward, so as to stretch the spring 3 44. The lifting cylinder 43 will drive the slide 49 to slide on the slide rod 48. At the same time, the lifting cylinder 43 will drive the sleeve seat 54 to move downward, and the sleeve seat 54 will drive the inclined rod 55 to move downward synchronously, and then the inclined rod 55 will drive the movable rod 57 to move downward synchronously, so that the movable rod 57 will be in the rectangular opening 56. The movable rod 57 drives the swing rod 52 to swing, and the swing rod 52 drives the stirring blade 53 to approach the inner wall of the auxiliary pipe 10. When the long end of the outer wall of the cam 36 rotates upward, and under the elastic force of the spring three 44, the lifting cylinder 43 will move up, and then the stirring blade 53 will be moved away from the inner wall of the auxiliary pipe 10. Therefore, the present design can realize the reciprocating movement of the stirring blade 53 toward the inner wall of the auxiliary pipe 10, and realize the reciprocating movement of the stirring blade 53 to the grouting material, thereby avoiding blockage during grouting and effectively improving the grouting efficiency.

[0058] The rotating unit includes a fixed seat 45 fixedly connected to the middle position inside the lifting cylinder 43, and a T-shaped rotating rod 46 is rotatably installed on the fixed seat 45. The T-shaped rotating rod 46 extends to the inside of the connecting cylinder 42, and the rotating cylinder 47 is sleeved on the bottom end of the T-shaped rotating rod 46. The inner walls of the connecting cylinder 42 and the rotating cylinder 47 are symmetrically provided with limiting grooves 59. The top and bottom ends of the T-shaped rotating rod 46 are symmetrically fixed with limiting blocks 58. The limiting blocks 58 slide on the inner walls of the limiting grooves 59, and the limiting blocks 58 and the limiting grooves 59 are both rectangular structures.

[0059] The rotation of bevel gear 1 37 will drive bevel gear 2 40 to rotate, and bevel gear 2 40 will drive connecting tube 42 to rotate. Through the connection relationship between limit groove 59 and limit block 58, connecting tube 42 will drive T-shaped rotating rod 46 to rotate, and T-shaped rotating rod 46 will drive rotating tube 47 to rotate, and rotating tube 47 will drive rotating seat 51 to rotate, and then rotating seat 51 will drive swing rod 52, rectangular mouth 56, movable rod 57 and stirring blade 53 to rotate synchronously, so as to realize circular rotation of stirring blade 53, so as to facilitate circular stirring of stirring blade 53 in the process of lateral swinging and material shifting, so as to realize sufficient stirring of grouting material, effectively improve the quality of grouting material, and improve grouting efficiency.

[0060] A process of a coal mine overburden separation grouting device in this embodiment includes the coal mine overburden separation grouting device as described above, and includes the following steps:

[0061] Step 1: The staff drills holes on the quaternary loose layer 1 by drilling equipment to obtain the drilling slot 4, and opens the installation slot 5 and the clamping slot 8 at the top of the quaternary loose layer 1, then installs the auxiliary pipe 10 by threading at the bottom end of the casing 6, and then inserts the casing 6 into the drilling slot 4. Through the connection relationship of the spring 2 32, the sealing plate 30 is blocked at the bottom end of the discharge port 12, so that the sealing plate 30 blocks the discharge port 12, so that the casing 6 can avoid the soil and sand inside the drilling slot 4 from entering the casing 6 and causing the discharge port 12 to be blocked during the downward movement of the casing 6;

[0062] Step 2: Make the installation box 7 outside the sleeve 6 be located at the bottom of the installation slot 5, and make the card block 9 at the bottom of the installation box 7 be inserted into the card slot 8;

[0063] Step 3: Twist the rotating ring 15, the rotating ring 15 will drive the expansion housing 14 to rotate, the expansion housing 14 will drive the rotating cylinder 13 to rotate, the rotating cylinder 13 will drive the external thread ring 16 to rotate, through the threaded connection relationship between the external thread ring 16 and the thread groove 17, the external thread ring 16 will move downward, and the external thread ring 16 will drive the lifting cylinder 43, the expansion housing 14 and the rotating ring 15 to move downward synchronously;

[0064] Step 4: Since the expansion housing 14 is a funnel-shaped structure, and the outer wall of the expansion housing 14 contacts the end of the push plate 22, the expansion housing 14 will push the push plate 22 to move horizontally during the downward movement of the expansion housing 14, and then the two push plates 22 will move away from each other, and the push plate 22 will drive the push rod 18 to slide on the inner wall of the sliding opening 19, and then the push rod 18 will drive the plug-in rod 24 to move horizontally, so that the plug-in rod 24 passes through the through hole 23 and is plugged into the side wall of the installation groove 5, so as to realize the fixed connection between the plug-in rod 24 and the fourth system loose layer 1;

[0065] Step 5: As the expansion housing 14 continues to move downward, the push plate 22 will contact the top of the outer wall of the expansion housing 14. Since the top of the outer wall of the expansion housing 14 is in a vertical state, the push plate 22 will remain stationary during the process of the expansion housing 14 continuing to move downward.

[0066] Step 6: The expansion housing 14 will drive the stabilizing ring 25 to move downward through the rotating ring 15, and insert the stabilizing ring 25 into the stabilizing groove 27. At the same time, the stabilizing ring 25 will drive the magnetic sheet 1 26 and the magnetic sheet 2 28 to be adsorbed and connected, thereby realizing the connection between the rotating ring 15 and the push plate 22, and realizing the stable installation of the sleeve 6;

[0067] Step 7: Then, grouting is performed into the interior of the casing 6 through the rotating ring 15. The grouting material falls on the rotating blade 35 to make it rotate, and the rotating blade 35 drives the fixed rod 33 to rotate. The fixed rod 33 drives the bevel gear 1 37 to rotate. Through the meshing connection relationship between the bevel gear 1 37 and the bevel gear 2 40, the stirring shaft 38 is rotated, and then the stirring shaft 38 drives the spiral blade 39 to rotate continuously in the casing 6, so that the spiral blade 39 can continuously move the grouting material;

[0068] Step 8: The rotation of the rotating blade 35 will drive the fixed rod 33 to rotate, and the fixed rod 33 will drive the cam 36 to rotate. When the long end of the outer wall of the cam 36 rotates downward, the outer wall of the cam 36 will contact the top of the lifting cylinder 43, and the lifting cylinder 43 will move downward, so as to stretch the spring 3 44;

[0069] Step 9: The lifting cylinder 43 drives the slideway 49 to slide on the slide rod 48, and at the same time, the lifting cylinder 43 drives the sleeve seat 54 to move downward, and the sleeve seat 54 drives the inclined rod 55 to move downward synchronously, and then the inclined rod 55 drives the movable rod 57 to move downward synchronously, so that the movable rod 57 slides inside the rectangular opening 56, and the movable rod 57 drives the swing rod 52 to swing;

[0070] Step 10: The swing rod 52 drives the stirring blade 53 to approach the inner wall of the auxiliary tube 10. When the outer wall long end of the cam 36 rotates upward, the lifting cylinder 43 moves upward under the elastic force of the spring 3 44, and then the stirring blade 53 moves away from the inner wall of the auxiliary tube 10.

[0071] Step 11: The rotation of the bevel gear 1 37 drives the bevel gear 2 40 to rotate, and the bevel gear 2 40 drives the connecting tube 42 to rotate. Through the connection relationship between the limiting groove 59 and the limiting block 58, the connecting tube 42 drives the T-shaped rotating rod 46 to rotate, the T-shaped rotating rod 46 drives the rotating tube 47 to rotate, and the rotating tube 47 drives the rotating seat 51 to rotate;

[0072] Step 11: The rotation of the rotating seat 51 will drive the swing rod 52, the rectangular opening 56, the movable rod 57 and the stirring blade 53 to rotate synchronously, realizing the circular rotation of the stirring blade 53, so that the stirring blade 53 can perform circular stirring in the process of lateral swinging and shifting the material, thereby achieving sufficient stirring of the grouting material.

[0073] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A coal mine overburden separation grouting device, characterized in that: It includes a Quaternary loose layer, a rock layer is arranged below the Quaternary loose layer, an overburden separation layer space is arranged below a key layer with large thickness and high strength in the rock layer, a drilling slot connected to the overburden separation layer space is opened on the Quaternary loose layer and the rock layer, a mounting slot connected to the drilling slot is opened at the top of the Quaternary loose layer, a casing is inserted inside the drilling slot, the bottom end of the casing extends to the inside of the overburden separation layer space, a grouting auxiliary component is installed at the inner bottom end of the casing, and a stabilizing component connected to the mounting slot is installed at the top of the casing; The stabilizing component includes an installation box fixedly sleeved on the top of the outer wall of the sleeve and located inside the installation groove, the bottom end of the installation groove is provided with card slots at equal distances, the bottom end of the installation box is fixedly connected with a card block inserted into the card slot, the interior of the installation box is provided with two symmetrically arranged accommodating cavities, the outer wall of the installation box is symmetrically provided with through holes, the interior of the accommodating cavity is provided with a plug rod that penetrates the inside of the through hole and is connected to the side wall of the installation groove, the installation box is provided with a lateral moving mechanism connected to the plug rod, and the interior of the sleeve is provided with a driving mechanism connected to the lateral moving mechanism.

2. The coal mine overburden separation grouting device according to claim 1, characterized in that: The lateral movement mechanism includes a sliding opening symmetrically opened at the top of the installation box and connected to the accommodating cavity, a push rod connected to the side wall of the plug-in rod is slidably installed inside the accommodating cavity, the push rod passes through the sliding opening and extends to the top of the fourth series loose layer, the top of the push rod is fixedly connected to a push plate that slides on the top of the fourth series loose layer, a stabilizing rod is fixedly connected to the side of the side wall of the accommodating cavity away from the through hole, and the inner wall of the installation box and the push rod are connected by a spring sleeved on the outer wall of the stabilizing rod.

3. The coal mine overburden separation grouting device according to claim 2, characterized in that: The driving mechanism includes a threaded groove opened on the inner wall of the top end of the sleeve, a rotating cylinder is inserted into the inner wall of the sleeve, a diffusion cover is fixedly connected to the top end of the rotating cylinder, one end of the push plate slides in contact with the outer wall of the diffusion cover, the vertical section of the diffusion cover is a funnel-shaped structure, a rotating ring is fixedly connected to the top end of the diffusion cover, the rotating ring and the push plate are connected by a plug-in connector, and an external threaded ring threadedly connected to the threaded groove is fixedly connected to the bottom end of the outer wall of the rotating cylinder.

4. The coal mine overburden separation grouting device according to claim 3, characterized in that: The connector includes a stabilizing ring fixed to the bottom end of the rotating ring, a magnetic piece 1 is symmetrically installed at the bottom end of the stabilizing ring, a stabilizing groove is opened at the top of the two push plates, the stabilizing ring extends to the inside of the stabilizing groove, and a magnetic piece 2 connected to the magnetic piece 1 is provided at the bottom end of the stabilizing groove.

5. The coal mine overburden separation grouting device according to claim 1, characterized in that: The grouting auxiliary component includes an auxiliary pipe inserted into the bottom end of the inner wall of the casing, the auxiliary pipe is threadedly connected to the inner wall of the casing, a base is fixedly connected to the middle position of the bottom end of the auxiliary pipe, two symmetrically arranged discharge ports are provided between the inner wall of the auxiliary pipe and the base, an anti-blocking mechanism is provided at the bottom end of the discharge port, and a pushing mechanism is provided inside the auxiliary pipe.

6. The coal mine overburden separation grouting device according to claim 5, characterized in that: The anti-blocking mechanism includes a base symmetrically fixed to the bottom end of the base, a sealing plate rotatably connected to the base, a locking plate symmetrically provided at the bottom end of the auxiliary tube connected to the side wall of the sealing plate, and a spring 2 fixed to the side wall of the base connected to the top end of the sealing plate.

7. The coal mine overburden separation grouting device according to claim 5, characterized in that: The pushing mechanism includes a fixed rod rotatably mounted on the top end of the auxiliary pipe side wall, a protective box is sleeved on the outer wall of the fixed rod, a bevel gear 1 located inside the protective box is fixedly sleeved on the fixed rod, a stirring shaft is rotatably mounted on the top end of the protective box, a spiral blade is fixedly connected to the top of the outer wall of the stirring shaft, a bevel gear 2 meshing with the bevel gear 1 is fixedly connected to the bottom end of the stirring shaft, a guide plate located above the protective box is fixedly connected to the outer wall of the stirring shaft, a symmetrically arranged sliding column is fixedly connected to the bottom end of the guide plate, and the sliding column is in sliding contact with the top surface of the protection box, the outer wall of the fixed rod is symmetrically fixed with rotating blades located on both sides of the protection box, a cam is symmetrically mounted on the fixed rod, the cam is located between the rotating blade and the protection box, and a stirring mechanism in contact with the cam is provided at the bottom end of the protection box.

8. The coal mine overburden separation grouting device according to claim 7, characterized in that: The top end of the lifting cylinder is symmetrically provided with a slide rail, and the inner wall of the auxiliary tube is symmetrically provided with a sliding rod extending to the inner wall of the slide rail, one end of the sliding rod slides with the inner wall of the slide rail, and a sleeve seat is symmetrically fixed on the outer wall of the sleeve seat, and an inclined rod is symmetrically fixed on the outer wall of the sleeve seat, and a movable rod is fixed on the bottom end of the inclined rod. The bottom end of the lifting cylinder is interspersed with a rotating cylinder located under the fixed seat, and the top end of the base is fixedly connected with a connecting seat rotatably connected with the bottom end of the sleeve seat, and the outer wall of the rotating cylinder is fixedly sleeved with a rotating seat, and the outer wall of the rotating seat is rotatably provided with a swing rod, one end of the swing rod is connected with a stirring blade, and a rectangular opening is opened on the rectangular opening that is slidably connected to the movable rod, and the top end of the rotating cylinder and the connecting cylinder are connected by a rotating unit.

9. The coal mine overburden separation grouting device according to claim 8, characterized in that: The rotating unit includes a fixed seat fixedly connected to the middle position inside the lifting cylinder, a T-shaped rotating rod is rotatably installed on the fixed seat, the T-shaped rotating rod extends to the inside of the connecting cylinder, the rotating cylinder is sleeved on the bottom end of the T-shaped rotating rod, the inner walls of the connecting cylinder and the rotating cylinder are symmetrically provided with limiting grooves, the top and bottom ends of the T-shaped rotating rod are symmetrically fixed with limiting blocks, the limiting blocks slide on the inner walls of the limiting grooves, and the limiting blocks and the limiting grooves are both rectangular structures.

10. A process for a coal mine overburden separation grouting device, comprising the coal mine overburden separation grouting device as claimed in claim 1, characterized in that: The following steps are involved: Step 1: The staff drills holes on the Quaternary loose layer through drilling equipment to obtain a drilling slot, and opens an installation slot and a card slot on the top of the Quaternary loose layer. Then, the grouting auxiliary component is threadedly installed on the bottom end of the casing, and then the casing is inserted into the drilling slot. Through the function of the grouting auxiliary component, the bottom end of the casing can be blocked, which can prevent the soil and sand inside the drilling slot from entering the casing and causing the discharge port to be blocked; Step 2: When the sleeve is inserted into the drilling slot, the installation box is located at the bottom of the installation slot, and the card block at the bottom of the installation box is inserted into the card slot; Step 3: Then twist the driving mechanism to realize the rotation and lifting of the driving mechanism, which can provide power for the action of the lateral moving mechanism, so that the lateral moving mechanism drives the plug-in rod to move horizontally, so that the plug-in rod passes through the through hole and is plugged into the side wall of the installation groove, so as to realize the fixed connection between the plug-in rod and the loose layer of the quaternary system, and then complete the fixed installation of the casing, solve the problem of grouting interruption caused by the upward movement of the casing due to the increase of air pressure during the grouting process, and thus improve the grouting stability; Step 4: Then, grouting is injected into the casing through the driving mechanism. The grouting material falls into the grouting auxiliary component, which will then make the grouting auxiliary component work, so as to facilitate the continuous stirring of the grouting material. The grouting material is fully stirred, which solves the problem of grouting material overflowing due to momentary blockage during flow, thereby protecting the grouting material and increasing the grouting speed.

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