Tailing mortar conveying and filling device and operation method thereof

Abstract

The invention discloses a tailing mortar conveying and filling device and an operation method thereof, and relates to the field of tailing mortar conveying, the filling device comprises a high-pressure pump used for conveying tailing mortar, the inlet end of the high-pressure pump is provided with a feeding cylinder, and the outlet end of the high-pressure pump is connected with a horizontal pipe; the end, away from the high-pressure pump, of the horizontal pipe is connected with a vertical pipe buried in a mine through a guiding buffering assembly, and the bottom of the vertical pipe extends to an underground goaf. The guide buffering assembly comprises a guide cylinder, sealing discs are arranged at cylinder openings in the two sides of the guide cylinder respectively, the sealing discs on the two sides and the guide cylinder define a buffering cavity, two sets of openings are formed in the cylinder wall of the guide cylinder, one set of openings are connected with the horizontal pipe, and the other set of openings are connected with the vertical pipe; by arranging the multiple sets of buffer blades, the multiple sets of buffer blades alternately buffer tailing mortar conveyed into the buffer cavity, and the phenomenon that in the prior art, the inner wall of a bent pipe is in continuous contact with the tailing mortar for a long time is avoided.

Description

Technical Field

[0001] The present invention relates to the field of tailings mortar transportation, and in particular to a tailings mortar transportation and filling device and an operating method thereof. Background Art

[0002] Tailings mortar refers to a semi-finished mortar made from tailings as the primary raw material, along with solid materials such as cementitious materials and admixtures, through precise batching and uniform mixing. Tailings mortar filling involves transferring tailings mortar to spaces requiring filling (such as goafs) to fill voids, support surrounding rock, prevent surface subsidence, or control groundwater flow. Filling is a crucial technical measure in mining, crucial for ensuring mine safety and improving resource recovery.

[0003] After the tailings slurry is prepared on the ground, it needs to be transported underground using a high-pressure mortar pump. Therefore, a delivery elbow is required for transportation. Since the solid particles (such as ore debris) contained in the tailings slurry are relatively hard and irregular in shape, they continuously rub and impact against the wall of the elbow during high-speed flow, causing the inner wall of the elbow to gradually wear out. Long-term wear of elbows will reduce their service life, increase maintenance costs, and even cause leakage, resulting in safety and environmental risks. When elbows are severely worn, they need to be replaced frequently, which may lead to production interruptions and affect the company's normal production order and economic benefits. Summary of the Invention

[0004] The present invention provides a tailings slurry conveying and filling device and an operating method thereof, which can solve the following problems existing in the prior art: During the current tailings slurry transportation process, the conveying elbows are easily worn, which not only causes leakage, but also affects the normal production order due to frequent replacement.

[0005] A tailings slurry conveying and filling device includes a high-pressure pump for conveying tailings slurry, wherein the inlet end of the high-pressure pump is provided with a feeding cylinder, and the outlet end of the high-pressure pump is connected to a horizontal pipe; One end of the horizontal pipe away from the high-pressure pump is connected to a vertical pipe buried in the mine through a guide buffer assembly, and the bottom of the vertical pipe extends to the goaf underground; The guide buffer assembly includes a guide cylinder, and sealing disks are respectively arranged at the two side openings of the guide cylinder. The sealing disks on both sides and the guide cylinder enclose a buffer cavity. Two groups of openings are opened on the cylinder wall of the guide cylinder, one group of openings is connected to the horizontal pipe, and the other group of openings is connected to the vertical pipe. Wherein, a first support shaft is rotatably arranged in the buffer cavity, and a plurality of groups of buffer blades are fixedly arranged in a circumferential array on the first support shaft.

[0006] Preferably, the axial ends of the sealing disks on both sides are provided with through grooves for slidingly passing through the first support shaft, and the through grooves are provided with guide grooves corresponding to the buffer blades one by one; Wherein, the first support shaft is connected to a driving module that drives it to slide along the through slot.

[0007] Preferably, the sealing disks on both sides are rotatably arranged at the openings of the guide cylinder; The axial lengths of the first support shaft and the buffer blade are equal to the axial length of the guide cylinder, both ends of the first support shaft extend into the through slot, and both side edges of the buffer blade extend into the guide slot respectively.

[0008] Preferably, a second support shaft is further provided on the outer side of the guide cylinder, the second support shaft is rotatably connected to the first support shaft, and a plurality of groups of buffer blades are correspondingly fixedly provided on the second support shaft.

[0009] Preferably, the ends of the two groups of the first support shafts that are away from each other are respectively connected to the driving frames for rotation, and the two groups of driving frames are respectively slidably arranged on the base. The driving module includes a bidirectional screw that is rotatably arranged at the bottom of the base, and nuts are symmetrically spirally sleeved on the bidirectional screws. One end of the bidirectional screw is fixed to the output end of the first motor fixed to the base, and a corresponding sliding groove is opened on the base. The driving frames on both sides are fixed to the nuts through the sliding grooves through connecting rods.

[0010] Preferably, a spraying robot is provided on the base for spraying the polymer composite material onto the wear surface of the buffer blade; Wherein, a rotating module is also provided on the base, and the rotating module is used to drive the support shaft output to the outside of the guide cylinder to rotate.

[0011] Preferably, two sets of racks are symmetrically fixed on the base, a mounting frame is fixed on the top of the rack, and a crossbeam is fixed on the mounting frame; Among them, the rotating module includes gears fixed to the ends of the first support shaft and the second support shaft, and several groups of lifting electric cylinders corresponding to the first support shaft and the second support shaft are fixedly arranged on the side of the beam facing the base, and the driving end of the lifting electric cylinder is fixedly provided with a rack for engaging with the gear.

[0012] Preferably, a limit cylinder is fixedly arranged on the mounting frame, the driving end of the limit cylinder is fixed to the lifting plate, and a number of groups of limit seats are correspondingly fixedly arranged on the bottom of the lifting plate. An arc groove is opened on one side of the limit seat for fitting with the outer convex surface of the buffer blade, and a pressure sensor is embedded in the arc groove.

[0013] Preferably, two groups of limit frames are symmetrically fixedly arranged at the bottom of the mounting frame, and swing plates are rotatably arranged on the sides of the two groups of limit frames that are close to each other, and the limit plates are fixedly arranged on the swing plates. A second motor is fixedly arranged on the outer side of one of the limit frames, and the output end of the second motor is fixed to the swing plate. Among them, a limiting shaft is rotatably arranged between the limiting plates on both sides, and two groups of limiting cylinders are symmetrically rotatably sleeved on the limiting shaft. An arc frame is fixedly arranged at both ends of each limiting cylinder, and a grinding roller is rotatably arranged at one end of the arc frame away from the limiting cylinder. Each grinding roller is rotatably connected to the limiting shaft through a pulley structure. A third motor is fixedly arranged on the outer side of one group of limiting plates, and the output end of the third motor passes through the limiting plate and is fixedly connected to the arc frame and the grinding roller.

[0014] An operating method for a tailings slurry conveying and filling device, applied to the above-mentioned tailings slurry conveying and filling device, comprises the following steps: The prepared tailings slurry is first transported to the feeding barrel; The high-pressure pump extracts the tailings slurry from the feed barrel and transports it to the horizontal pipe; The tailings slurry transported to the horizontal pipe enters the buffer chamber through one set of openings and is then discharged into the vertical pipe through another set of openings; The tailings slurry in the vertical pipe is transported to the underground filling pipe and finally to the underground goaf.

[0015] The present invention provides a tailings slurry conveying and filling device and an operating method thereof, which have the following beneficial effects: 1) When the tailings slurry of the present invention is transported from the horizontal pipe to the buffer chamber, the tailings slurry first contacts the buffer blades in the buffer chamber. The buffer blades can provide a buffering effect on the tailings slurry, thereby preventing the tailings slurry from directly contacting the inner wall of the guide cylinder and causing wear. Accordingly, the present invention provides multiple groups of buffer blades, which alternately buffer the tailings slurry transported to the buffer chamber, thereby avoiding the phenomenon of the inner wall of the curved pipe being in continuous contact with the tailings slurry for a long time in the prior art. Therefore, the multiple groups of buffer blades of the present invention can further reduce the wear efficiency, thereby ensuring the service life of the guide buffer assembly; 2) In the present invention, when the tailings slurry is in a normal conveying state, the first support shaft and the buffer blade are located in the buffer chamber. After the buffer blade has been used for a period of time, the present invention can drive the first support shaft to slide out along the through slot through the driving module, and the buffer blade on the first support shaft can be conveyed along the guide slot to the outside of the buffer chamber, and then the buffer blade can be repaired by staff. Compared with the curved pipe structure in the prior art, the contact surface with the tailings slurry is located on the inner wall of the pipe, making it difficult to carry out in-depth repair treatment. However, after the buffer blade is conveyed from the buffer chamber, it is directly exposed to the outside, so it is easy to repair and more convenient to repair. 3) The present invention embeds both ends of the first support shaft into the through groove, and embeds both side edges of the buffer blade into the guide groove. This not only improves the sealing effect between the through groove and the guide groove, thereby preventing the tailings slurry entering the buffer cavity from leaking through the guide groove and the through groove, but also, when the tailings slurry drives the buffer blade to rotate in the buffer cavity, the buffer blade can synchronously drive the sealing disk to rotate at the tube mouth of the guide cylinder, so that the buffer blade and the sealing disk are always in a relatively static state. When the buffer blade needs to be repaired, the first support shaft can be directly driven by the driving module to move horizontally along the through groove, which can effectively prevent the buffer blade and the guide groove from being misaligned, further improving the repair efficiency. 4) In the initial state of the present invention, the first support shaft is located in the buffer cavity. When the buffer blades on the first support shaft need to be repaired, the present invention drives the first support shaft to be output outward along the through slot through the driving module. During the movement, the first support shaft can synchronously move along the through slot toward the buffer cavity. When the first support shaft completely moves to the outside of the guide cylinder, the second support shaft just moves into the buffer cavity, and the first support shaft can be replaced, so that even during the repair process, the buffer blades on the first support shaft will not affect the normal buffering treatment of the tailings mortar by the buffer blades on the second support shaft in the present invention. The present invention needs to stop the buffer blades for repair, which ensures the normal transportation of the tailings mortar and further improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic structural diagram of a tailings slurry conveying and filling device provided by the present invention; Figure 2 A side structural schematic diagram of a tailings slurry conveying and filling device provided by the present invention; Figure 3 A schematic top view of the tailings slurry conveying and filling device provided by the present invention; Figure 4 This is a structural schematic diagram of a guide buffer assembly in a tailings slurry conveying and filling device provided by the present invention; Figure 5 A schematic structural diagram of a buffer blade in a tailings slurry conveying and filling device provided by the present invention; Figure 6 A schematic structural diagram of tailings slurry conveying in a tailings slurry conveying and filling device provided by the present invention; Figure 7 This is a schematic structural diagram of a grinding roller in motion in a tailings slurry conveying and filling device provided by the present invention; Figure 8 This is a structural schematic diagram of a rotating module in a tailings slurry conveying and filling device provided by the present invention; Figure 9This is a schematic structural diagram of a guide cylinder in a tailings slurry conveying and filling device provided by the present invention; Figure 10 This is a schematic structural diagram of a bidirectional screw in a tailings slurry conveying and filling device provided by the present invention.

[0017] Description of reference numerals: 1. High-pressure pump; 2. Horizontal pipe; 3. Guide cylinder; 4. Base; 5. Mounting frame; 6. Limit cylinder; 7. Second motor; 101. Feeding barrel; 201. Vertical pipe; 301. Sealing disk; 302. Opening; 303. Guide groove; 304. Through groove; 401. Slide; 402. Frame; 403. Drive frame; 404. First support shaft; 405. Second support shaft; 406. Buffer blade; 407. Gear; 40 8. First motor; 409. Bidirectional screw; 410. Nut; 411. Spraying robot; 601. Lifting plate; 602. Limit seat; 603. Lifting cylinder; 604. Rack; 605. Crossbeam; 701. Limit frame; 702. Limit plate; 703. Third motor; 704. Limit cylinder; 705. Arc frame; 706. Grinding roller; 707. Pulley structure; 708. Swing plate; 709. Limit shaft. DETAILED DESCRIPTION

[0018] The specific embodiments of the present invention are described in detail below, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0019] Example 1 like Figures 1 to 3 As shown, an embodiment of the present invention provides a tailings slurry conveying and filling device, comprising a high-pressure pump 1 for conveying tailings slurry, wherein a feeding barrel 101 is provided on the inlet end of the high-pressure pump 1 for conveying the prepared tailings slurry, and the outlet end of the high-pressure pump 1 is connected to a horizontal pipe 2; specifically, the high-pressure pumps 1 of this embodiment are symmetrically arranged in two groups to improve the conveying efficiency of the tailings slurry; wherein the high-pressure pump 1 of this embodiment can adopt a centrifugal slurry pump, a plunger pump / piston pump or a diaphragm pump, and its signal is not limited, so long as it meets the actual conveying demand for the tailings slurry; It should be noted that, in this embodiment, the prepared tailings slurry is first transported to the feeding barrel 101 , and then the tailings slurry in the feeding barrel 101 is extracted by the high-pressure pump 1 , and finally transported to the horizontal pipe 2 .

[0020] In this embodiment, the end of the horizontal pipe 2 away from the high-pressure pump 1 is connected to the vertical pipe 201 buried in the mine through a guide buffer assembly. The horizontal pipe 2 and the vertical pipe 201 are perpendicular to each other. The guide buffer assembly is used to convert the tailings slurry from a horizontal conveying state to a vertical conveying state and convey it to the vertical pipe 201. The bottom of the vertical pipe 201 extends to the underground goaf; Specifically, the tailings slurry is first transported from the horizontal pipe 2 to the guide buffer assembly, and then the tailings slurry is guided to the vertical pipe 201 by the guide buffer assembly, and finally transported to the underground goaf (see Figure 6 ); As a further solution of this embodiment, please refer to Figure 4-Figure 6 and Figure 9-10 The guide buffer assembly includes a guide cylinder 3, and sealing disks 301 are respectively arranged at the cylinder openings on both sides of the guide cylinder 3. The sealing disks 301 on both sides and the guide cylinder 3 enclose a buffer chamber. Two groups of openings 302 are opened on the cylinder wall of the guide cylinder 3. One group of openings 302 is connected to the horizontal pipe 2, and the other group of openings 302 is connected to the vertical pipe 201. Specifically, the tailings slurry transported to the horizontal pipe 2 can enter the buffer chamber through one group of openings 302, and then be discharged into the vertical pipe 201 through the other group of openings 302. Among them, a first support shaft 404 is rotatably arranged in the buffer chamber, and a plurality of groups of buffer blades 406 are fixedly arranged in a circumferential array on the first support shaft 404; it can be explained that when the tailings slurry of this embodiment is transported to the buffer chamber by the horizontal pipe 2, the tailings slurry first contacts the buffer blades 406 in the buffer chamber, and the buffer blades 406 can buffer the tailings slurry to avoid the tailings slurry directly contacting the inner wall of the guide cylinder 3 and causing wear. Accordingly, this embodiment provides multiple groups of buffer blades 406, and the multiple groups of buffer blades 406 alternately buffer the tailings slurry transported to the buffer chamber to avoid the phenomenon in the prior art that the inner wall of the bent pipe continues to contact the tailings slurry for a long time. Therefore, the multiple groups of buffer blades 406 of this embodiment can further reduce the wear efficiency to ensure the service life of the guide buffer assembly.

[0021] In addition, this embodiment does not limit the specific number of buffer blades 406 to meet actual application requirements. For example, in this embodiment, three groups of buffer blades 406 are provided on the first support shaft 404.

[0022] Furthermore, in order to improve the buffering effect of the buffer blades 406 on the tailings slurry, in this embodiment, the buffer blades 406 are configured as an arc-shaped structure. When the tailings slurry contacts the buffer blades 406, the contact area between the two is larger.

[0023] Example 2 Based on Example 1, please refer to Figure 4-Figure 6 and Figure 9-10, when the several groups of buffer blades 406 on the first support shaft 404 have been used for a period of time, in order to facilitate the replacement and repair of the buffer blades 406, in this embodiment, the axial ends of the sealing disks 301 on both sides are provided with through grooves 304 for sliding through the first support shaft 404, and the through grooves 304 are correspondingly provided with guide grooves 303 corresponding to each buffer blade 406, wherein the first support shaft 404 is connected to a driving module that drives it to slide along the through grooves 304; it can be explained that when the tailings slurry is in a normal conveying state, the first support shaft 404 and the buffer blades 406 are located in the buffer cavity Inside, when the buffer blade 406 has been used for a period of time, the present embodiment can drive the first support shaft 404 to slide out along the through groove 304 through the driving module, and the buffer blade 406 on the first support shaft 404 can be transported to the outside of the buffer cavity along the guide groove 303, and then the buffer blade 406 can be repaired by the staff. Compared with the curved pipe structure in the prior art, the contact surface with the tailings slurry is located on the inner wall of the pipe, so it is difficult to carry out in-depth repair treatment. After the buffer blade 406 of this embodiment is output from the buffer cavity, it is directly exposed to the outside, so it is easy to repair and the repair convenience is higher.

[0024] In this embodiment, when the driving module is in the process of outputting the buffer blade 406 from the buffer cavity, when the buffer blade 406 and the guide groove 303 are in a misaligned state, the buffer blade 406 cannot be pulled out due to the interference of the sealing disk 301. In order to further improve the convenience, the sealing disks 301 on both sides are respectively rotated and arranged at the tube mouth of the guide cylinder 3, wherein the axial length of the first support shaft 404 and the buffer blade 406 is equal to the axial length of the guide cylinder 3, the two ends of the first support shaft 404 extend into the through groove 304, and the side edges of the buffer blade 406 extend into the guide groove 303 respectively; it can be explained that in this embodiment, the two ends of the first support shaft 404 are embedded in the through groove 304, and the two ends of the buffer blade 406 are embedded in the through groove 303. The side edges are embedded in the guide groove 303, which not only improves the sealing effect of the through groove 304 and the guide groove 303, so as to prevent the tailings slurry entering the buffer chamber from leaking through the guide groove 303 and the through groove 304, but at the same time, when the tailings slurry drives the buffer blade 406 to rotate in the buffer chamber, the buffer blade 406 can synchronously drive the sealing disk 301 to rotate at the tube mouth of the guide cylinder 3, so that the buffer blade 406 and the sealing disk 301 are always in a relatively static state. When the buffer blade 406 needs to be repaired, the first support shaft 404 can be directly driven by the driving module to move horizontally along the through groove 304, which can effectively avoid the buffer blade 406 and the guide groove 303 from being misaligned, thereby further improving the repair efficiency. In addition, since the sealing disk 301 of this embodiment rotates synchronously, the operator can judge the conveying rate of the tailings slurry by observing the rotation rate of the sealing disk 301, which is more intuitive.

[0025] For further information, see Figure 4-Figure 6 and Figure 9-10 , after the buffer blades 406 are output from the buffer chamber, in order to ensure that the tailings slurry can continue to be transported and to avoid shutdown, a second support shaft 405 is further arranged on the outside of the guide cylinder 3, and the second support shaft 405 is rotatably connected to the first support shaft 404, and a plurality of groups of buffer blades 406 are fixedly arranged on the second support shaft 405; specifically, the second support shaft 405 of this embodiment has the same structure and size as the first support shaft 404; it should be noted that in the initial state, the first support shaft 404 is located in the buffer chamber, and when the buffer blades 406 on the first support shaft 404 need to be repaired, this embodiment drives the first support shaft 404 through the driving module. The shaft 404 is output to the outside along the through slot 304. During the movement, the first support shaft 404 can synchronously move along the through slot 304 toward the buffer cavity. When the first support shaft 404 is completely moved to the outside of the guide cylinder 3, the second support shaft 405 just moves into the buffer cavity to replace the first support shaft 404, so that even during the repair process, the buffer blades 406 on the first support shaft 404 will not affect the normal buffering treatment of the tailings slurry by the buffer blades 406 on the second support shaft 405 in this embodiment. This embodiment does not require the buffer blades 406 to be shut down for repair, thereby ensuring the normal transportation of the tailings slurry and further improving production efficiency.

[0026] In addition, it should be noted that when the driving module drives the first support shaft 404 to move toward the outside of the guide cylinder 3, even if the buffer blade 406 on the second support shaft 405 is in a misaligned state with the guide groove 303, since the sealing disk 301 is in a normal rotation state, and the driving module gives the buffer blade 406 on the second support shaft 405 a force to move toward the guide cylinder 3, when the sealing disk 301 rotates until the guide groove 303 and the buffer blade 406 on the second support shaft 405 are in a one-to-one correspondence, driven by this force, the buffer blade 406 on the second support shaft 405 can be embedded in the guide groove 303, and then can rotate synchronously with the sealing disk 301, so that the driving module can pull out the first support shaft 404.

[0027] See also Figure 4-Figure 5 as well as Figures 8-10, one end of the two groups of first support shafts 404 away from each other is respectively connected to the driving frame 403 for rotation, and the two groups of driving frames 403 are respectively slidably arranged on the base 4, and the driving module includes a bidirectional screw 409 rotatably arranged at the bottom of the base 4, and the bidirectional screw 409 is symmetrically spirally sleeved with a nut 410, one end of the bidirectional screw 409 is fixed to the output end of the first motor 408 fixed to the base 4, and a corresponding slide groove 401 is opened on the base 4, and the driving frames 403 on both sides are respectively fixed with the slide groove 401 and the nut 410 through a connecting rod; It can be explained that, when adjusting the movement of the first support shaft 404 in this embodiment, the bidirectional screw 409 is first driven to rotate by the first motor 408, and during the movement of the nuts 410 on both sides on the bidirectional screw 409, the first support shaft 404 can be synchronously driven to move by the driving frame 403; Accordingly, this embodiment can also adopt a synchronous belt transmission structure to replace the screw transmission mechanism, so as to drive the first support shafts 404 on both sides to move toward each other or away from each other on the base 4, and this embodiment is not limited to this.

[0028] See also Figure 4 、 Figures 8-10 After the buffer blade 406 is output from the buffer chamber, in order to repair the worn part of the buffer blade 406, a spraying robot 411 is provided on the base 4 for spraying a polymer composite material onto the worn surface of the buffer blade 406. Specifically, the polymer composite material of this embodiment can be a pure resin-based composite material, a fiber-reinforced composite material, or a ceramic particle-reinforced composite material, which is not limited in this embodiment, so as to re-form a wear-resistant layer on the worn part of the buffer blade 406 and extend its service life. In addition, the spraying robot 411 of this embodiment is existing technology, and this embodiment does not limit its specific structure and model. In particular, this embodiment can be provided with a guide rail on the base 4 for driving the spraying robot 411 to move back and forth, and the spraying robot 411 is driven by a servo drive device to move on the guide rail to adjust its position, so as to facilitate the spray repair treatment of the buffer blade 406 transported to the outside of the guide cylinder 3.

[0029] Furthermore, since multiple groups of buffer blades 406 are provided on the first support shaft 404 and the second support shaft 405, in order to repair each group of buffer blades 406, in this embodiment, a rotating module is also provided on the base 4, and the rotating module is used to drive the support shaft output to the outside of the guide cylinder 3 to rotate; specifically, when the first support shaft 404 or the second support shaft 405 is output to the outside of the guide cylinder 3, the support shaft can be driven to rotate by the rotating module, and the support shaft synchronously drives the buffer blades 406 to rotate. When the tailings slurry is transported to the buffer chamber, the tailings slurry is in contact with the inner concave surface of the buffer blade 406, which will cause wear of the inner concave surface. When the inner concave surface of any group of buffer blades 406 rotates to the direction toward the base 4, it can be sprayed and repaired by the spraying robot 411. When the spraying repair of one group of buffer blades 406 is completed, the next group of buffer blades 406 can be driven by the rotating module to rotate until its inner concave surface faces the base 4. This reciprocating process can achieve spraying and repair processing of each group of buffer blades 406.

[0030] In this embodiment, two groups of frames 402 are symmetrically fixed on the base 4, a mounting frame 5 is fixed on the top of the frame 402, and a beam 605 is fixed on the mounting frame 5, wherein the rotating module includes a gear 407 fixed to the end of the first support shaft 404 and the second support shaft 405, and a plurality of groups of lifting electric cylinders 603 corresponding to the first support shaft 404 and the second support shaft 405 are fixed on the side of the beam 605 facing the base 4, and a rack 604 for engaging with the gear 407 is fixed on the driving end of the lifting electric cylinder 603; it can be explained that when the first support shaft 404 or the second support shaft 405 is transported to the outside of the buffer chamber, this embodiment can drive the rack 604 to descend and engage with the gear 407 through the lifting electric cylinder 603 on the corresponding side, thereby achieving the effect of driving the support shaft to rotate.

[0031] It should also be noted that in order to ensure that each group of buffer blades 406 can accurately rotate to the direction where its inner concave surface faces the base 4, a limit cylinder 6 is fixedly arranged on the mounting frame 5, and the driving end of the limit cylinder 6 is fixed to the lifting plate 601, and a number of groups of limit seats 602 are correspondingly fixedly arranged on the bottom of the lifting plate 601. An arc groove for fitting with the outer convex surface of the buffer blade 406 is opened on one side of the limit seat 602, and a pressure sensor is embedded in the arc groove; it can be explained that the lifting electric cylinder 603 of this embodiment first drives the lifting plate 601 to a preset position through the limit cylinder 6 before driving the rack 604 to descend, and then drives the rack 604 to descend through the lifting electric cylinder 603, and the rack 604 engages with the gear 407 to drive During the rotation of the buffer blades 406, when the outer convex surface of any group of buffer blades 406 fits into the arc groove of the limit seat 602, the pressure sensor receives a pressure feedback signal, and the driving end of the lifting cylinder 603 of the group stops descending. At this time, the inner concave surface of one group of buffer blades 406 on the support shaft is just in the direction toward the base 4, and then spray repair treatment can be carried out. Accordingly, when the spray repair is completed, the lifting plate 601 can be driven to rise to the initial position by the limit cylinder 6, and the lifting cylinder 603 drives the support shaft to rotate a certain angle again, so that the limit seat 602 can descend again to limit the next group of buffer blades 406. This reciprocating process can realize the spray repair treatment of each group of buffer blades 406.

[0032] For further information, see Figure 4 、 Figure 7-10After the inner concave surface of the buffer blade 406 is sprayed with the polymer composite material, in order to polish the sprayed area, in this embodiment, two groups of limit frames 701 are symmetrically fixed on the bottom of the mounting frame 5, and the swing plates 708 are rotatably arranged on the sides close to the two groups of limit frames 701. The limit plates 702 are fixed on the swing plates 708, and the second motor 7 is fixed on the outer side of the limit frame 701 on one side. The output end of the second motor 7 is fixed to the swing plate 708, wherein a limit shaft 709 is rotatably arranged between the limit plates 702 on both sides, and two groups of limit cylinders 704 are symmetrically rotatably sleeved on the limit shaft 709, and arc frames 705 are fixedly arranged on both ends of each limit cylinder 704, and the arc frames 705 are rotatably arranged on the ends away from the limit cylinder 704. The grinding roller 706, each grinding roller 706 is rotatably connected to the limit shaft 709 through a pulley structure 707, and a third motor 703 is fixedly arranged on the outer side of one group of limit plates 702, and the output end of the third motor 703 passes through the limit plate 702 and is fixedly connected to the arc frame 705 and the grinding roller 706; it can be explained that when the outer convex surface of any group of buffer blades 406 is in contact with the arc groove of the limit seat 602, the center of the buffer blade 406 on the adjacent side is just located on the extension line of the axis of the output shaft of the second motor 7. In this embodiment, the swing plate 708 can be driven to rotate by the second motor 7, and the swing plate 708 synchronously drives the grinding roller 706 to move toward the inner concave surface of the buffer blade 406 through the limit plate 702 and the arc frame 705 (see Figure 7 ), during this process, one group of grinding rollers 706 can be driven to rotate by the third motor 703, and the group of grinding rollers 706 drives the remaining groups of grinding rollers 706 to rotate synchronously through the pulley structure 707 and the limiting shaft 709, so that the inner concave surface of the buffer blade 406 can be polished. This embodiment does not require synchronous multiple servo drive devices to drive the grinding rollers 706 to rotate, which not only reduces costs but also improves stability.

[0033] The grinding roller 706 of this embodiment can simultaneously remove the residues attached to the surface of the buffer blade 406 during the grinding process of the buffer blade 406 .

[0034] A method for operating a tailings slurry conveying and filling device comprises the following steps: See also Figure 1-Figure 3 S1: First, the prepared tailings slurry is transported to the feeding barrel 101; S2, the high-pressure pump 1 extracts the tailings slurry from the feed barrel 101 and transports it to the horizontal pipe 2; S3, the tailings slurry transported to the horizontal pipe 2 enters the buffer chamber through a set of openings 302, and then is discharged into the vertical pipe 201 through another set of openings; S4. The tailings slurry in the vertical pipe 201 is transported to the underground filling pipe and finally transported to the underground goaf.

[0035] The above disclosures are only a few specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the scope of protection of the present invention.

Claims

1. A tailings slurry conveying and filling device, comprising a high-pressure pump (1) for conveying tailings slurry, wherein a feed barrel (101) is provided on the inlet end of the high-pressure pump (1), and an outlet end of the high-pressure pump (1) is connected to a horizontal pipe (2); It is characterized in that One end of the horizontal pipe (2) away from the high-pressure pump (1) is connected to a vertical pipe (201) buried in the mine through a guide buffer assembly, and the bottom of the vertical pipe (201) extends to the underground goaf; The guide buffer assembly comprises a guide cylinder (3), sealing disks (301) are respectively arranged at the cylinder openings on both sides of the guide cylinder (3), the sealing disks (301) on both sides and the guide cylinder (3) enclose a buffer cavity, and two groups of openings (302) are opened on the cylinder wall of the guide cylinder (3), one group of openings (302) is connected to the horizontal pipe (2), and the other group of openings (302) is connected to the vertical pipe (201); A first support shaft (404) is rotatably arranged in the buffer chamber, and a plurality of groups of buffer blades (406) are fixedly arranged in a circumferential array on the first support shaft (404).

2. The tailings slurry conveying and filling device according to claim 1, characterized in that: A through groove (304) for slidingly passing through the first support shaft (404) is formed at the axial center end of the sealing disk (301) on both sides, and a guide groove (303) corresponding to each buffer blade (406) is formed on the through groove (304); The first support shaft (404) is connected to a driving module that drives it to slide along the through slot (304).

3. The tailings slurry conveying and filling device according to claim 2, characterized in that: The sealing discs (301) on both sides are rotatably arranged at the openings of the guide cylinder (3); The axial lengths of the first support shaft (404) and the buffer blade (406) are equal to the axial length of the guide cylinder (3), both ends of the first support shaft (404) extend into the through groove (304), and the side edges of the buffer blade (406) extend into the guide groove (303) respectively.

4. The tailings slurry conveying and filling device according to claim 2, characterized in that: A second support shaft (405) is further arranged on the outside of the guide cylinder (3), the second support shaft (405) being rotatably connected to the first support shaft (404), and a plurality of groups of buffer blades (406) are correspondingly fixedly arranged on the second support shaft (405).

5. The tailings slurry conveying and filling device according to claim 2, characterized in that: The ends of the two groups of the first support shafts (404) that are away from each other are respectively connected to the driving frames (403) for rotation. The two groups of driving frames (403) are respectively arranged on the base (4) for sliding. The driving module includes a bidirectional screw (409) that is arranged on the bottom of the base (4) for rotation. The bidirectional screw (409) is symmetrically spirally sleeved with a nut (410). One end of the bidirectional screw (409) is fixed to the output end of the first motor (408) fixed on the base (4). A sliding groove (401) is correspondingly opened on the base (4). The driving frames (403) on both sides are respectively fixed to the nuts (410) through connecting rods passing through the sliding groove (401).

6. The tailings slurry conveying and filling device according to claim 5, characterized in that: The base (4) is provided with a spraying manipulator (411) for spraying the polymer composite material onto the wear surface of the buffer blade (406); The base (4) is further provided with a rotating module, which is used to drive the support shaft output to the outside of the guide cylinder (3) to rotate.

7. The tailings slurry conveying and filling device according to claim 5, characterized in that: Two sets of racks (402) are symmetrically fixedly arranged on the base (4), a mounting frame (5) is fixedly arranged on the top of the rack (402), and a crossbeam (605) is fixedly arranged on the mounting frame (5); The rotating module includes a gear (407) fixed to the ends of the first support shaft (404) and the second support shaft (405); a plurality of lifting electric cylinders (603) corresponding to the first support shaft (404) and the second support shaft (405) are fixedly arranged on one side of the crossbeam (605) facing the base (4); and a rack (604) for engaging with the gear (407) is fixedly arranged on the driving end of the lifting electric cylinder (603).

8. The tailings slurry conveying and filling device according to claim 7, characterized in that: A limiting cylinder (6) is fixedly arranged on the mounting frame (5), and a driving end of the limiting cylinder (6) is fixed to the lifting plate (601). A plurality of groups of limiting seats (602) are correspondingly fixedly arranged on the bottom of the lifting plate (601). An arc groove for fitting with the outer convex surface of the buffer blade (406) is opened on one side of the limiting seat (602), and a pressure sensor is embedded in the arc groove.

9. The tailings slurry conveying and filling device according to claim 7, characterized in that: Two groups of limiting frames (701) are symmetrically fixedly arranged at the bottom of the mounting frame (5), and swing plates (708) are rotatably arranged on the adjacent sides of the two groups of limiting frames (701), and a limiting plate (702) is fixedly arranged on the swing plate (708). A second motor (7) is fixedly arranged on the outer side of one of the limiting frames (701), and an output end of the second motor (7) is fixed to the swing plate (708); A limiting shaft (709) is rotatably arranged between the limiting plates (702) on both sides, and two groups of limiting cylinders (704) are symmetrically rotatably sleeved on the limiting shaft (709). An arc frame (705) is fixedly arranged at both ends of each limiting cylinder (704), and a grinding roller (706) is rotatably arranged at one end of the arc frame (705) away from the limiting cylinder (704). Each grinding roller (706) is rotatably connected to the limiting shaft (709) via a pulley structure (707). A third motor (703) is fixedly arranged on the outer side of one group of limiting plates (702), and an output end of the third motor (703) passes through the limiting plate (702) and is fixedly connected to the arc frame (705) and the grinding roller (706).

10. An operating method for a tailings slurry conveying and filling device, characterized in that: A tailings slurry conveying and filling device as claimed in any one of claims 1 to 9 comprises the following steps: The prepared tailings slurry is first transported to a feeding barrel (101); The high-pressure pump (1) extracts the tailings slurry from the feed barrel (101) and transports it to the horizontal pipe (2); The tailings slurry transported to the horizontal pipe (2) enters the buffer chamber through a set of openings (302) and is then discharged into the vertical pipe (201) through another set of openings; The tailings slurry in the vertical pipe (201) is transported to the underground filling pipe and finally transported to the underground goaf.

Images