Filling pipeline with embedded spiral groove and mine slurry / paste filling anti-blocking process

Abstract

The invention relates to the field of filling anti-blocking, and discloses a filling pipeline with an embedded spiral groove and a mine slurry / paste filling anti-blocking process.The filling pipeline with the embedded spiral groove comprises a filling pipeline body, the spiral groove is formed in the inner side of the filling pipeline body, and an anti-blocking mechanism is arranged on the filling pipeline body; the anti-blocking mechanism comprises a power motor, a rotating shaft I, a stirring blade I, a bidirectional lead screw sleeve, a connecting piece, a main plate, a rotating shaft II, a peripheral spiral circular groove, an extrusion piece and a stirring blade II; the output end of the power motor is fixedly connected with the first rotating shaft, the first stirring blades are fixedly installed on the outer side of the first rotating shaft, two bidirectional threads are arranged on the outer side of the first rotating shaft and are in threaded connection with the bidirectional lead screw sleeve, the connecting piece is fixedly connected with the bidirectional lead screw sleeve and the main plate, and the second rotating shaft is rotationally installed on the main plate. The method has the following advantage and effect that the phenomenon that the filling pipeline is blocked can be effectively avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of filling and anti-blocking, and in particular to a filling pipe with an embedded spiral groove and a mine slurry / paste filling and anti-blocking process. Background Art

[0002] Mine slurry / paste filling involves crushing waste rock or tailings, then mixing it with cement, fly ash, and other binders and water. The slurry is then pumped through filling pipes using industrial filling pumps to the goaf or working face. Slurry / paste filling has been gradually adopted in underground mines due to its ability to dispose of waste rock or tailings on a large scale, improve underground mineral resource recovery, and control surface subsidence. Over the course of slurry / paste filling technology development, the distance between the filling station and the goaf or working face has increased. This increased length of the filling pipes is a key factor contributing to slurry / paste filling failures. This is because the crushing and mixing systems are relatively stable. As the prepared slurry is pumped through the filling pipes, the long-term accumulation of solid particles in the slurry leads to pipe blockage, a significant uncertainty factor in the entire filling system. Furthermore, the risk of pipe blockage increases proportionally with the length of the filling pipe. The longer the filling pipeline, the more difficult it is to identify the blocked pipeline and restore the operation of the filling system after a blockage occurs. As a result, this vicious cycle of filling pipeline distance, blockage risk and difficulty in unblocking has become the core pain point and difficulty of mine slurry / paste filling technology.

[0003] At present, in order to ensure the stable transportation of slurry in the slurry / paste filling pipeline of the mine, a number of patents have been published for monitoring the slurry status in the filling pipeline or unblocking blocked pipelines. For example, the invention patent publication number CN116608006A discloses a method and system for monitoring the pressure and early warning of pipe blockage in a coarse aggregate paste filling pipeline, in which a sensor is attached to the inner wall of the pipeline to monitor the flow status of the slurry; the invention patent publication number CN115266904A discloses a device and method for unblocking a filling pipeline based on a magnetoresistive sensor, in which a valve is installed inside the pipeline to achieve the purpose of unblocking the pipeline after it is blocked. So far, the relevant patents that have been published have all been based on passive approaches to monitor or unblock the pipeline after it is blocked. No relevant patents have been published to prevent blockages based on the idea of actively avoiding blockage in the filling pipeline. No matter how to monitor the blockage of the filling pipeline, or how to clear the pipeline after it is blocked, once the filling pipeline is blocked, it will inevitably endanger the safe production of the mine. Therefore, avoiding the filling blockage problem from the root is the core element to ensure the stable operation of mine slurry / paste filling. Therefore, it is necessary to design a filling pipeline with an embedded spiral groove and a mine slurry / paste filling anti-blocking process to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a filling pipe with an embedded spiral groove and a mine slurry / paste filling anti-blocking process to solve the above problems.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions: a filling pipe with an embedded spiral groove, comprising: A filling pipe, wherein the inner portion of the filling pipe is provided with a spiral groove and an anti-blocking mechanism is provided on the filling pipe; The anti-blocking mechanism includes a power motor, a first rotating shaft, a first stirring blade, a bidirectional screw sleeve, a connecting piece, a main board, a second rotating shaft, a peripheral spiral groove, an extrusion piece and a second stirring blade; The output end of the power motor is fixedly connected to the rotating shaft 1, the stirring blade 1 is fixedly installed on the outside of the rotating shaft 1, two bidirectional threads are provided on the outside of the rotating shaft 1, the bidirectional threads are threadedly connected to the bidirectional screw sleeve, the connecting piece is fixedly connected to the bidirectional screw sleeve and the main board, the rotating shaft 2 is rotatably installed on the main board, the outer spiral groove is provided on the outside of the rotating shaft 2, the extrusion piece is fixedly installed on the filling pipe, the extrusion piece is in contact with the inner wall of the outer spiral groove, and the stirring blade 2 is fixedly sleeved on the outside of the rotating shaft 2.

[0006] The present invention is further configured as follows: the anti-blocking mechanism also includes a connecting pipe, a sealing plug, a one-way valve 1, a one-way valve 2 and a cross bar, the connecting pipe is fixedly installed on the main board, a circular hole is opened on the rotating shaft 2, the connecting pipe is in sealing contact with the circular hole, the one-way valve 2 is fixedly installed in the circular hole, the sealing plug is in sealing contact with the connecting pipe, the one-way valve 1 is fixedly installed on the sealing plug, and the cross bar is fixedly installed between the sealing plug and the filling pipe.

[0007] The present invention is further configured as follows: a guide rod is fixedly connected to the filling pipe, and the main board is slidably sleeved on the outside of the guide rod.

[0008] The present invention is further configured as follows: the second rotating shaft sliding seal is installed on the filling pipe.

[0009] The present invention is further configured as follows: a bracket is fixedly connected to the filling pipe, and the power motor is fixedly installed on the bracket.

[0010] The present invention is further configured as follows: the filling pipe is made of high manganese steel, and the surface of the spiral groove is clad with a 1-2 mm thick tungsten carbide coating.

[0011] The present invention is further configured as follows: a baffle is fixedly connected to the guide rod, and the baffle is in contact with one side of the main board.

[0012] A mine slurry / paste filling and anti-blocking process for a filling pipe with an embedded spiral groove according to any of the above items comprises the following steps: S1: When the slurry flows through the filling pipe with an embedded spiral groove, the spiral groove guides the fluid, forcing the slurry to flow along a spiral trajectory. The spiral groove converts part of the axial flow kinetic energy of the slurry into tangential kinetic energy, forming a spinning flow field, which can effectively prevent blockage. S2: Start the power motor, the power motor drives the rotating shaft 1 to rotate, the rotating shaft 1 drives the stirring blade 1 to rotate, and the stirring blade 1 stirs the slurry to further prevent blocking. When the rotating shaft 1 rotates, the two-way thread and the two-way screw sleeve cooperate to make the connecting piece and the main board move back and forth laterally, and the main board drives the rotating shaft 2 to move back and forth laterally, thereby making the stirring blade 2 move back and forth laterally. During the reciprocating movement of the rotating shaft 2, the extrusion piece squeezes the outer spiral groove, causing the rotating shaft 2 to rotate, so that the stirring blade 2 can still rotate during the reciprocating movement, so that the slurry can be fully stirred, and the anti-blocking performance is further improved; S3: The mainboard will drive the connecting pipe to move during its movement, and the sealing plug will remain in place, allowing outside air to enter the connecting pipe through one-way valve 1, and then be discharged into the filling pipe through one-way valve 2. The air will be injected into the slurry intermittently to accelerate the flow of the slurry, which can further stir the slurry and effectively improve the anti-blocking effect.

[0013] The beneficial effects of the present invention are: 1. The present invention lays parallel, spiral grooves along the inner wall of a filling pipe at locations prone to blockage, such as bends and junctions. The purpose of the spiral grooves is to impart rotational power to the slurry, causing it to generate spin motion as it flows through these pipes, thereby reducing the probability of solid particle deposition and the formation of eddy current dead zones, and fundamentally ensuring the stability of the filling pipe's delivery. The present invention also relates to a process for preventing blockage in mine slurry / paste filling. This process involves rationally arranging the positions of the pipes with embedded spiral grooves and, based on parameters such as the ratio and concentration of different slurries, selecting the spiral angle and direction, spiral groove depth, and pitch (the angle between the spiral and the pipe axis determines the intensity of the slurry's spin motion; appropriately increasing the spiral angle at bend transitions can stimulate fluid rotation and reduce particle deposition. While excessively deep spiral grooves can enhance spin motion, they can also increase flow resistance; excessively small pitches can easily lead to machining difficulties and wall wear, requiring a balance to be struck between pipe diameter, flow rate, and particle concentration). This prevents blockage in the filling pipe from occurring, ensuring stable operation of mine slurry / paste filling.

[0014] 2. The present invention further adds an anti-blocking mechanism on the basis of the above, which further improves the anti-blocking performance of the filling pipe and effectively avoids the blockage of the filling pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 This is a schematic diagram of the structure of a filling pipe with an embedded spiral groove proposed by the present invention. Figure 1 .

[0017] Figure 2 This is a schematic diagram of the structure of a filling pipe with an embedded spiral groove proposed by the present invention. Figure 2 .

[0018] Figure 3 This is a schematic diagram of the structure of a filling pipe with an embedded spiral groove proposed by the present invention. Figure 3 .

[0019] Figure 4 yes Figure 2 Schematic diagram of the structure of part A in .

[0020] Figure 5 yes Figure 2 Schematic diagram of the structure of part B.

[0021] Figure 6 yes Figure 3 Schematic diagram of the structure of part C in .

[0022] Figure 7 It is a schematic cross-sectional structural diagram of a filling pipe with an embedded spiral groove proposed by the present invention.

[0023] Figure 8 This is a schematic diagram of the structure of a filling pipe with an embedded spiral groove proposed by the present invention. Figure 4 .

[0024] Figure 9 yes Figure 7 Schematic diagram of the structure of part D in .

[0025] In the figure, 1. filling pipe; 2. spiral groove; 3. bracket; 4. power motor; 5. rotating shaft 1; 6. stirring blade 1; 7. bidirectional screw sleeve; 8. connecting piece; 9. main board; 10. rotating shaft 2; 11. outer spiral circular groove; 12. extrusion piece; 13. connecting pipe; 14. sealing plug; 15. one-way valve 1; 16. one-way valve 2; 17. stirring blade 2; 18. guide rod; 19. baffle; 20. cross bar. DETAILED DESCRIPTION

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood based on specific circumstances.

[0027] The technical solutions of the present invention will be described clearly and completely below with reference to specific embodiments. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0028] See also Figures 1-9 The present invention provides a filling pipe with an embedded spiral groove, comprising: A filling pipe 1, the inner portion of which is provided with a spiral groove 2, and an anti-blocking mechanism is provided on the filling pipe 1; The anti-blocking mechanism includes a power motor 4, a rotating shaft 5, a stirring blade 6, a bidirectional screw sleeve 7, a connecting piece 8, a main board 9, a rotating shaft 10, a peripheral spiral groove 11, an extrusion piece 12 and a stirring blade 17; The output end of the power motor 4 is fixedly connected to the rotating shaft 5, the stirring blade 6 is fixedly installed on the outside of the rotating shaft 5, two bidirectional threads are provided on the outside of the rotating shaft 5, the bidirectional threads are threadedly connected to the bidirectional screw sleeve 7, the connecting piece 8 is fixedly connected to the bidirectional screw sleeve 7 and the main board 9, the rotating shaft 2 10 is rotatably installed on the main board 9, the outer spiral groove 11 is provided on the outside of the rotating shaft 2 10, the extrusion piece 12 is fixedly installed on the filling pipe 1, the extrusion piece 12 is in contact with the inner wall of the outer spiral groove 11, and the stirring blade 2 17 is fixedly sleeved on the outside of the rotating shaft 2 10.

[0029] By means of the anti-blocking mechanism, the power motor 4 is started to rotate the stirring blade 1 6 and the stirring blade 2 17 can rotate back and forth and move back and forth laterally, so that the slurry can be fully stirred to prevent the occurrence of blockage.

[0030] Specifically, the anti-blocking mechanism also includes a connecting pipe 13, a sealing plug 14, a one-way valve 15, a one-way valve 2 16 and a cross bar 20. The connecting pipe 13 is fixedly mounted on the main board 9. A circular hole is opened on the rotating shaft 2 10. The connecting pipe 13 is in sealing contact with the circular hole. The one-way valve 2 16 is fixedly mounted in the circular hole. The sealing plug 14 is in sealing contact with the connecting pipe 13. The one-way valve 15 is fixedly mounted on the sealing plug 14. The cross bar 20 is fixedly mounted between the sealing plug 14 and the filling pipe 1.

[0031] Through the above-mentioned anti-blocking mechanism, air can be injected into the slurry intermittently to accelerate the flow of the slurry, which can further stir the slurry and effectively improve the anti-blocking effect.

[0032] Specifically, a guide rod 18 is fixedly connected to the filling pipe 1, the main board 9 is slidably sleeved on the outside of the guide rod 18, the rotating shaft 2 10 is slidingly sealed and installed on the filling pipe 1, the filling pipe 1 is fixedly connected to the bracket 3, the power motor 4 is fixedly installed on the bracket 3, and the guide rod 18 is fixedly connected to a baffle 19, which contacts one side of the main board 9. It should be noted that the main board 9 can be guided in this way.

[0033] Specifically, the filling pipe 1 is made of high manganese steel, and the surface of the spiral groove 2 is clad with a 1-2 mm thick tungsten carbide coating. It should be noted that this ensures strength and improves service life.

[0034] A mine slurry / paste filling and anti-blocking process for a filling pipe with an embedded spiral groove according to any of the above items comprises the following steps: S1: When the slurry flows through the filling pipe 1 with the embedded spiral groove 2, the spiral groove 2 guides the fluid, forcing the slurry to flow along a spiral trajectory. The spiral groove 2 converts part of the axial flow kinetic energy of the slurry into tangential kinetic energy, forming a spinning flow field, which can effectively prevent blockage. S2: Start the power motor 4, the power motor 4 drives the rotating shaft 5 to rotate, the rotating shaft 5 drives the stirring blade 6 to rotate, and the stirring blade 6 stirs the slurry to further prevent blocking. When the rotating shaft 5 rotates, the two-way thread cooperates with the two-way screw sleeve 7 to make the connecting piece 8 and the main board 9 move back and forth in the horizontal direction. The main board 9 drives the rotating shaft 2 10 to move back and forth in the horizontal direction, thereby making the stirring blade 2 17 move back and forth in the horizontal direction. During the horizontal reciprocating movement of the rotating shaft 2 10, the extrusion piece 12 squeezes the outer spiral groove 11, so that the rotating shaft 2 10 rotates, so that the stirring blade 2 17 can also rotate during the horizontal reciprocating movement, so that the slurry can be fully stirred, and the anti-blocking performance is further improved. S3: During the movement of the main board 9, the connecting pipe 13 will be driven to move, and the position of the sealing plug 14 will not move, so that the outside air enters the connecting pipe 13 through the one-way valve 15, and then is discharged into the filling pipe 1 through the one-way valve 2 16, and the air is injected into the slurry intermittently to accelerate the flow of the slurry, which can further stir the slurry and effectively improve the anti-blocking effect.

[0035] The present invention can also adopt a segmented design, dividing the filling pipe 1 into a standard straight pipe section (L=3-6m), a curved pipe section (such as Figure 8As shown in the figure) (curvature radius R=3-5D, D is the pipe diameter) and the connecting flange section, a spiral groove reinforcement zone is set within a length of 1.5D before and after the elbow section and the connecting flange section. The spiral groove density in this area is 1.2-1.5 times that of the standard section.

[0036] Helix angle α gradient design: the straight pipe section adopts a 15-25° small-angle helix (the axial velocity component accounts for >70%); the curved pipe section adopts a 30-45° large-angle helix (the tangential velocity component is increased to 40-55%).

[0037] The matching relationship between groove depth h and particle size is: coarse aggregate paste (d50>2mm): h=2-3mm; fine tailing mortar (d50<0.5mm): h=0.5-1.5mm.

[0038] Pitch p optimization model: p=πD·tanα·(1-C / 100), where C is the slurry concentration (65-85%), achieving automatic pitch compression of 15-30% under high-concentration conditions.

[0039] The bimetallic composite casting process is adopted. The pipe substrate is high manganese steel (ZGMn13). The surface of the spiral groove 2 is clad with a 1-2mm thick tungsten carbide coating (hardness ≥ 65HRC). The spiral groove is processed by CNC cyclone milling. The groove bottom fillet radius R ≥ 0.3h, and the groove wall inclination angle β = 10-15° (to reduce flow resistance).

[0040] Spiral groove pipes must be installed compulsorily in the following locations: vertically downward turning horizontal section elbows (priority layout area), pulsation attenuation area within 20m of the pump outlet, and accelerated settlement area 50m before the goaf entrance.

[0041] Coverage rate control of spiral groove pipelines: coverage rate of easily blocked areas (vertical sections, curved sections) ≥80%, coverage rate of horizontal straight pipe sections 30-50%.

[0042] When slurry flows through a pipe embedded with spiral grooves, the grooves guide the fluid, forcing it to flow along a spiral trajectory. This enhances the tangential velocity component: the spiral grooves partially convert the slurry's axial flow kinetic energy into tangential kinetic energy, forming a spinning flow field (measured increases in circumferential velocity by 30-50%). Centrifugal force causes solid particles to migrate toward the center of the pipe, away from the low-velocity areas on the pipe wall, improving particle suspension uniformity by 40-60%.

[0043] In bends, the strong vortex generated by the spiral grooves suppresses the Dean vortex formed by centrifugal forces in conventional pipes (reducing the secondary flow intensity from 0.2V to below 0.05V), preventing particle accumulation on the outside of the bend. The spiral flow induces velocity pulsations (amplitude 0.1-0.3V), periodically scouring the pipe wall and destabilizing the particle adhesion layer.

[0044] In curved pipe sections with a curvature radius R ≤ 3D, a large helix angle (30-45°) is used to increase the proportion of the tangential velocity component (40-55%) and strengthen the swirl intensity to offset the secondary flow in the curved pipe. A small helix angle (15-25°) is used in horizontal straight pipe sections to balance the swirl intensity and axial conveying efficiency (axial velocity proportion > 70%).

[0045] Coarse aggregate paste (d 50 >2mm): Groove depth h = 2-3mm, enhance the swirl flow's ability to carry coarse particles. Fine tail slurry (d 50 <0.5mm): Groove depth h=0.5-1.5mm, to avoid excessively deep grooves causing turbulence and increased energy loss.

[0046] Dynamic compression pitch according to slurry concentration C: p = π D⋅tan α ⋅(1− C / 100), high concentration ( C =80%), the pitch is automatically compressed by 25-30% to enhance the shear effect near the wall.

[0047] Case 1: Coarse aggregate paste transportation Working condition parameters: d 50 =3mm, C=80%, transmission distance 12km Spiral groove design: Bend section (R=3D): α =40°, h=3mm, p=0.8 π D Straight pipe section: α =25°,h=2mm,p= π D Implementation effect: The particle deposition thickness in the bend section is reduced from 15mm in traditional pipes to less than 3mm.

[0048] The overall pressure loss is reduced by 18% and the pumping energy consumption is reduced by 22%.

[0049] Case 2: Fine tailings high concentration slurry Working condition parameters: d 50 =0.3mm, C=75%, transmission distance 8km Spiral groove design: Bend section (R=4D): α =35°, h=1.2mm, p=0.7πD Straight pipe section: α =20°, h=0.8mm, p=0.9πD Implementation effect: Slurry uniformity index (C vstandard deviation) decreased from 0.25 to 0.12.

[0050] The frequency of pipe blockage was reduced from 3 times per month to zero blockage within half a year.

[0051] Differential pressure sensors (10D spacing) and ultrasonic concentration meters are arranged at key nodes of the pipeline to obtain ΔP and C in real time. v When the ΔP measured / theoretical value is greater than 1.2, the self-cleaning mode is triggered (the flow rate is increased to 1.5v0 and lasts for 5 minutes).

[0052] Based on real-time rheological data (τ y ,μ) and particle gradation, the spiral parameters are dynamically adjusted through the optimization model: α opt =15°+0.3 C +5lg( d 50 The system automatically matches the optimal groove depth and pitch combination to balance anti-blocking effect and energy consumption.

[0053] Based on the slurry mix, the pre-set spiral parameter template is called up to initialize the pipeline layout. The slurry state is monitored in real time, and spiral parameters are dynamically optimized. Enhanced swirl mode is activated in areas prone to blockage (vertical turning sections and pump outlets). Fiber Bragg grating sensors monitor channel wear and issue an alarm when the coating thickness is less than 0.5mm. Periodic cleaning waves (2-5Hz) are injected to maintain channel cleanliness.

[0054] This invention utilizes a spiral groove structure to induce slurry spin flow, combined with dynamic parameter matching and intelligent control technology to fundamentally suppress particle deposition, overcoming the limitations of traditional passive anti-blocking technologies. Practical engineering applications have demonstrated that this solution can reduce the risk of pipe blockage to less than one-fifth of that of traditional methods, significantly improving the reliability and cost-effectiveness of long-distance filling systems.

[0055] The above is a detailed introduction to a filling pipe with an embedded spiral groove and a mine slurry / paste filling and anti-blocking process provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above examples is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, the present invention can also be improved and modified in several ways, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A filling pipe with an embedded spiral groove, characterized in that: include: A filling pipe (1), wherein the inner portion of the filling pipe (1) is provided with a spiral groove (2), and the filling pipe (1) is provided with an anti-blocking mechanism; The anti-blocking mechanism comprises a power motor (4), a rotating shaft (5), a stirring blade (6), a bidirectional screw sleeve (7), a connecting piece (8), a main board (9), a rotating shaft (10), a peripheral spiral groove (11), an extrusion piece (12) and a stirring blade (17); The output end of the power motor (4) is fixedly connected to the rotating shaft (5), the stirring blade (6) is fixedly mounted on the outer side of the rotating shaft (5), the outer side of the rotating shaft (5) is provided with two bidirectional threads, the bidirectional threads are threadedly connected to the bidirectional screw sleeve (7), the connecting member (8) is fixedly connected to the bidirectional screw sleeve (7) and the main board (9), the rotating shaft (10) is rotatably mounted on the main board (9), the outer spiral groove (11) is provided on the outer side of the rotating shaft (10), the extrusion member (12) is fixedly mounted on the filling pipe (1), the extrusion member (12) is in contact with the inner wall of the outer spiral groove (11), and the stirring blade (17) is fixedly sleeved on the outer side of the rotating shaft (10).

2. A filling pipe with an embedded spiral groove according to claim 1, characterized in that: The anti-blocking mechanism further comprises a connecting pipe (13), a sealing plug (14), a one-way valve (15), a one-way valve (16) and a cross bar (20), wherein the connecting pipe (13) is fixedly mounted on the main board (9), a circular hole is provided on the rotating shaft (10), the connecting pipe (13) is in sealing contact with the circular hole, the one-way valve (16) is fixedly mounted in the circular hole, the sealing plug (14) is in sealing contact with the connecting pipe (13), the one-way valve (15) is fixedly mounted on the sealing plug (14), and the cross bar (20) is fixedly mounted between the sealing plug (14) and the filling pipe (1).

3. The filling pipe with an embedded spiral groove according to claim 1, characterized in that: A guide rod (18) is fixedly connected to the filling pipe (1), and the main board (9) is slidably sleeved on the outside of the guide rod (18).

4. The filling pipe with an embedded spiral groove according to claim 1, characterized in that: The second rotating shaft (10) is slidingly sealed and mounted on the filling pipe (1).

5. The filling pipe with an embedded spiral groove according to claim 1, characterized in that: A bracket (3) is fixedly connected to the filling pipe (1), and a power motor (4) is fixedly mounted on the bracket (3).

6. The filling pipe with an embedded spiral groove according to claim 1, characterized in that: The filling pipe (1) is made of high manganese steel, and the surface of the spiral groove (2) is clad with a 1-2 mm thick tungsten carbide coating.

7. The filling pipe with an embedded spiral groove according to claim 3, characterized in that: A baffle (19) is fixedly connected to the guide rod (18), and the baffle (19) contacts one side of the main board (9).

8. A mine slurry / paste filling and anti-blocking process for a filling pipe with an embedded spiral groove according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1: When the slurry flows through the filling pipe (1) with the embedded spiral groove (2), the spiral groove (2) has a guiding effect on the fluid, forcing the slurry to flow along a spiral trajectory. The spiral groove (2) converts part of the axial flow kinetic energy of the slurry into tangential kinetic energy, forming a spin flow field, which can effectively prevent blockage; S2: Start the power motor (4), the power motor (4) drives the rotating shaft (5) to rotate, the rotating shaft (5) drives the stirring blade (6) to rotate, the stirring blade (6) stirs the slurry to further prevent blocking, the rotating shaft (5) cooperates with the bidirectional thread and the bidirectional screw sleeve (7) when rotating, so that the connecting piece (8) and the main board (9) move back and forth in the horizontal direction, the main board (9) drives the rotating shaft (10) to move back and forth in the horizontal direction, and then the stirring blade (17) moves back and forth in the horizontal direction, and during the horizontal reciprocating movement of the rotating shaft (10), the extrusion piece (12) squeezes the outer spiral groove (11), so that the rotating shaft (10) rotates, so that the stirring blade (17) can also rotate during the horizontal reciprocating movement, so that the slurry can be fully stirred, and the anti-blocking performance is further improved; S3: The main board (9) will drive the connecting pipe (13) to move during the movement, and the sealing plug (14) will remain in a fixed position, so that the outside air enters the connecting pipe (13) through the one-way valve (15), and then is discharged into the filling pipe (1) through the one-way valve (16), and the air is injected into the slurry intermittently to accelerate the flow of the slurry, thereby further stirring the slurry and effectively improving the anti-blocking effect.

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