Uniform filling and discharging device for filling goaf

Abstract

The present invention discloses a uniform filling and discharging device for filling goaf, which relates to the field of mining engineering technology. The device comprises a connector and a discharging barrel fixedly sleeved on the outside of the connector, a mixing barrel is provided inside the discharging barrel, a buffer funnel is movably sleeved on the outside of the mixing barrel, a first driving mechanism for driving the mixing barrel to rotate and a second driving mechanism for driving the buffer funnel to rotate are respectively provided inside the discharging barrel, the mixing barrel and the buffer funnel rotate in opposite directions, a stirring mechanism for stirring the slurry and a scraping mechanism for scraping off the slurry attached to the inner wall of the mixing barrel are provided inside the mixing barrel, and the present invention can fully stir and mix the slurry before discharging it through the cooperation of a turbine guide, a sealing plate and a stirring mechanism, thereby ensuring that the slurry always maintains an optimal flow state during the filling process, thereby avoiding problems such as uneven filling or blockage caused by unstable slurry flow or excessive pressure.

Description

Technical Field

[0001] The invention relates to the technical field of mining engineering, in particular to a uniform filling and discharging device for filling goaf areas. Background Art

[0002] In modern mining, goafs are typically filled with slurry to prevent potential hazards to the surface caused by roof collapse during mining. Filling methods have evolved from initial dry filling to water-sand filling, cemented filling, and now to paste filling. However, due to the high requirements for filling equipment and technology required for paste filling, most domestic mines currently utilize water-sand filling and cemented filling. These two filling methods often result in different slurry ingredient densities during the mine filling process, leading to sedimentation and segregation during slurry flow.

[0003] The existing filling and discharging methods in mines have the following problems: uneven strength distribution of the filling body due to the settlement and segregation of the filling material, and low safety factor of manual filling operations. The strength of the filling body is affected by the mass fraction of the slurry particles. The larger the mass fraction of coarse particles, the greater the uniaxial compressive strength. During the flow and sedimentation process of the filling slurry, the uneven distribution of particles leads to uneven strength distribution of the filling body. In the flow direction, the strength distribution of the filling body basically conforms to the normal distribution law. The greater the distance from the filling port, the smaller the mass fraction of coarse particles, the larger the mass fraction of fine particles, and the smaller the strength of the filling body. In the sedimentation direction, the strength of the filling body shows a linear change law. With increasing height, the mass fraction of coarse particles decreases, the mass fraction of fine particles increases, and its strength decreases linearly. In the filling area of ​​the goaf, there are both strength enhancement and loss areas. The smaller the strength loss area, the better the filling effect.

[0004] The existing patent, CN114671198B, discloses a uniform filling and discharging device for goaf filling and its operating method. The device comprises a conveying pipeline, the output end of which is located above the goaf and faces downward. An automatic rotating stirring device is rotatably connected to the output end of the conveying pipeline. The automatic rotating stirring device comprises a connector and a rotary feeder. The upper end of the connector is connected to the output end of the conveying pipeline, and the upper input port of the rotary feeder is rotatably connected to the lower end of the connector. This patent controls the flow rate, viscosity, and other factors of the input slurry, performing periodic pumping to achieve a uniform filling effect "from far to near, from line to surface." This improves the sedimentation and segregation of the filling slurry by improving the discharge method, ensuring the filling effect.

[0005] However, the above patent still has the following shortcomings: during the filling operation, the rotary feeder relies on the slurry to impact the turbofan blades and the spiral auger to achieve rotation. If the slurry flow rate or viscosity is insufficient, it may cause uneven rotation or stagnation, affecting the filling effect. Moreover, the design of the fan blades and the spiral auger cannot avoid particle sedimentation and segregation, especially for slurries with high viscosity or containing coarse particles, which will adhere to the inner wall of the turbofan mixing drum and the discharge buffer funnel, and then cause pipe blockage accidents, which not only affects the continuous progress of the filling operation, but also makes it very inconvenient to clear the blockage, and at the same time causes serious waste of slurry, increasing the filling cost. Summary of the Invention

[0006] The purpose of the present invention is to provide a uniform filling and discharging device for filling goaf to solve the above problems.

[0007] In order to solve the above technical problems, the present invention specifically provides the following technical solutions:

[0008] The cam is provided with a first driving mechanism for driving the mixing drum to rotate and a second driving mechanism for driving the buffer hopper to rotate, the mixing drum and the buffer hopper are respectively provided inside the mixing drum, the mixing drum and the buffer hopper have opposite rotation directions, the mixing drum is provided with a stirring mechanism for stirring the slurry and a scraping mechanism for scraping the slurry attached to the inner wall of the mixing drum, the buffer hopper is fixedly connected with a turbine guide member inside, an electric push rod is installed in the middle of the turbine guide member, the output shaft of the electric push rod faces the mixing drum, a sealing plate is slidably connected to the bottom of the mixing drum, the bottom of the sealing plate is fixedly connected to the output shaft of the electric push rod, the stirring mechanism is installed on the top of the sealing plate, and the scraping mechanism is installed on the inner wall of the mixing drum;

[0009] When the electric push rod pushes the blocking plate to move upward to the inside of the mixing barrel, the blocking plate contacts the scraping mechanism and drives the scraping mechanism to rotate.

[0010] As a preferred solution of the present invention, the bottom of the buffer funnel is fixedly connected to a discharge pipe, the inside of the discharge pipe is fixedly connected to a spiral auger, the spiral auger includes a central discharge pipe and a spiral blade, the spiral blade is fixed inside the discharge pipe, the central discharge pipe is fixedly arranged in the middle of the spiral blade, and the bottom of the central discharge pipe is fixedly connected to a spiral discharge tunnel.

[0011] As a preferred solution of the present invention, the stirring mechanism includes a fixed rod and multiple stirring rods, the fixed rod is fixedly arranged in the middle of the blocking plate, and the multiple stirring rods are evenly arranged on both sides of the outside of the fixed rod and fixedly connected to the fixed rod.

[0012] As a preferred solution of the present invention, the scraping mechanism includes an annular movable plate, a spiral scraper, a positioning ring and a plurality of buffer connecting parts. The annular movable plate is sealingly and slidingly connected to the outside of the connector, and the outer wall of the annular movable plate is in conflict with the inner wall of the mixing barrel. The spiral scraper is fixedly connected to the bottom of the annular movable plate, and the outer wall of the spiral scraper is in conflict with the inner wall of the mixing barrel. The positioning ring is slidably connected to the inside of the mixing barrel, and the top of the positioning ring is fixedly connected to the bottom of the spiral scraper. A plurality of buffer connecting parts are evenly fixed on the inner top wall of the mixing barrel along the circumferential direction. An annular groove is provided on the top of the annular movable plate, and the bottoms of all the buffer connecting parts extend into the inside of the annular groove and are rotatably connected to the annular groove.

[0013] As a preferred solution of the present invention, a mounting groove is opened in the middle of the turbine guide member, the electric push rod is installed in the mounting groove, the output end of the electric push rod is fixedly connected to a sliding rod, the sliding rod slides axially in a sealed manner with the mounting groove, and the sliding rod is fixedly connected to the bottom of the sealing plate.

[0014] As a preferred solution of the present invention, the buffer connecting part includes a fixed cylinder, a movable column, a circular plate and a spring, the fixed cylinder is fixed on the inner top wall of the mixing cylinder, the movable column is slidably connected to the inside of the fixed cylinder, the circular plate is fixedly connected to the bottom of the movable column, the circular plate is slidably connected to the annular groove, the spring is located in the fixed cylinder, and the upper and lower ends of the spring are respectively in conflict with the fixed cylinder and the movable column.

[0015] As a preferred solution of the present invention, the turbine guide member includes a central shaft and multiple guide paddles, the central shaft is located in the middle of the buffer funnel, and the multiple guide paddles are evenly fixed on the outer wall of the central shaft along the circumferential direction, and the side of the outer wall of the multiple guide paddles away from the central shaft is fixedly connected to the inner wall of the buffer funnel.

[0016] As a preferred solution of the present invention, the plurality of guide paddles divide the interior of the buffer funnel into a plurality of guide troughs, and all of the guide paddles are arranged at an angle.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention utilizes a turbine guide, a sealing plate, and a stirring mechanism to ensure thorough mixing before slurry discharge, ensuring optimal flow throughout the filling process. This avoids problems such as uneven filling or blockages caused by unstable slurry flow or excessive pressure. Furthermore, the first and second drive mechanisms can flexibly adjust the filling trajectory and speed based on the actual conditions of the goaf, achieving more efficient and precise filling operations.

[0019] 2. The present invention uses a first drive mechanism and a second drive mechanism to respectively drive the mixing drum and the buffer funnel to rotate in opposite directions. When the mixing drum and the buffer funnel continue to rotate in opposite directions, they can drive the blocking plate to rotate, thereby driving the stirring mechanism to stir the slurry inside the mixing drum, making the slurry more uniform. This reverse rotation not only promotes the centrifugal motion of the slurry, but also enhances the mixing effect of the slurry in the mixing drum. It reduces particle sedimentation and stratification in the slurry. Under the action of centrifugal force, the slurry is evenly distributed to every corner of the mixing drum, and the continuous stirring of the stirring mechanism further ensures the fineness and uniformity of the slurry.

[0020] 3. The present invention cooperates with the sealing plate and the scraping mechanism so that when the sealing plate rotates, the spiral scraper is driven to rotate, so that the spiral scraper performs spiral scraping along the inner wall of the mixing barrel, ensuring that the material attached to the inner wall of the mixing barrel can be completely scraped off, preventing the slurry from forming lumps or accumulation on the inner wall of the mixing barrel, ensuring that the inside of the mixing barrel is always kept clean, and further improving the mixing uniformity of the slurry. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other implementation drawings based on the provided drawings without inventive effort.

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the connection structure between the mixing cylinder and the buffer funnel of the present invention;

[0024] Figure 3 It is a front view of the structure of the present invention;

[0025] Figure 4 is a cross-sectional view of the present invention;

[0026] Figure 5 for Figure 3 A magnified view of the structure at point A;

[0027] Figure 6 A top cross-sectional view of the turbine guide member of the present invention;

[0028] Figure 7 It is a schematic diagram of the connection structure of the scraping mechanism and the stirring mechanism of the present invention.

[0029] The numbers in the figure represent the following:

[0030] 1. Connector; 2. Feeding barrel; 3. Mixing barrel; 4. Buffer funnel; 5. First drive mechanism; 6. Second drive mechanism; 7. Stirring mechanism; 8. Scraping mechanism; 9. Turbine guide; 10. Electric push rod; 11. Blocking plate; 12. Discharge pipe; 13. Auger;

[0031] 71. Fixed rod; 72. Stirring rod; 81. Annular movable plate; 82. Spiral scraper; 83. Positioning ring; 84. Buffer connector; 85. Annular groove; 86. Fixed cylinder; 87. Movable column; 88. Circular plate; 89. Spring; 91. Mounting groove; 92. Sliding rod; 93. Center shaft; 94. Guide paddle; 95. Guide trough; 131. Center discharge pipe; 132. Spiral blade. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] like Figure 1 - Figure 7 As shown, the present invention provides a uniform filling and discharging device for filling goaf, comprising a connector 1 and a discharging barrel 2 fixedly sleeved on the outside of the connector 1, a mixing barrel 3 is provided inside the discharging barrel 2, the mixing barrel 3 is movably sleeved with the discharging barrel 2, a buffer funnel 4 is movably sleeved on the outside of the mixing barrel 3, a first driving mechanism 5 for driving the mixing barrel 3 to rotate and a second driving mechanism 6 for driving the buffer funnel 4 to rotate are respectively provided inside the discharging barrel 2, the mixing barrel 3 and the buffer funnel 4 rotate in opposite directions, and the mixing barrel 3 rotates in opposite directions. A stirring mechanism 7 for stirring the slurry and a scraping mechanism 8 for scraping off the slurry attached to the inner wall of the mixing barrel 3 are provided inside the buffer funnel 4. A turbine guide member 9 is fixedly connected to the inside of the buffer funnel 4. An electric push rod 10 is installed in the middle of the turbine guide member 9. The output shaft of the electric push rod 10 faces the mixing barrel 3. A sealing plate 11 is slidably connected to the bottom of the mixing barrel 3. The bottom of the sealing plate 11 is fixedly connected to the output shaft of the electric push rod 10. The stirring mechanism 7 is installed on the top of the sealing plate 11, and the scraping mechanism 8 is installed on the inner wall of the mixing barrel 3.

[0034] When the electric push rod 10 pushes the blocking plate 11 to move upward to the inside of the mixing barrel 3, the blocking plate 11 contacts the scraping mechanism 8 and drives the scraping mechanism 8 to rotate.

[0035] The lower barrel 2 in the present invention is fixedly arranged above the goaf, connecting the connector 1 with the slurry conveying pipeline, and driving the mixing barrel 3 and the buffer funnel 4 to rotate respectively through the first driving mechanism 5 and the second driving mechanism 6, and the rotation directions of the mixing barrel 3 and the buffer funnel 4 are opposite. In the initial state, the electric push rod 10 pushes the sealing plate 11 to rise to the inside of the mixing barrel 3, thereby closing the bottom of the mixing barrel 3. At this time, the slurry is conveyed from the conveying pipeline to the connector 1 and enters the mixing barrel 3 from the connector 1. When the slurry enters the mixing barrel 3, it will accumulate on the sealing plate 11. When the buffer funnel 4 rotates, it can drive the turbine guide 9 to rotate, thereby driving the sealing plate 11 to rotate inside the mixing barrel 3, thereby causing the slurry on the sealing plate 11 to undergo centrifugal motion, so that the slurry is thrown to the inner wall of the mixing barrel 3 under the centrifugal motion of the sealing plate 11, and when the sealing plate 11 rotates, it can drive the stirring mechanism 7 to stir the slurry inside the mixing barrel 3, so that the slurry is more uniform.

[0036] The stirring mechanism 7 includes a fixed rod 71 and a plurality of stirring rods 72 . The fixed rod 71 is fixedly arranged in the middle of the blocking plate 11 . The plurality of stirring rods 72 are evenly arranged on both sides of the outside of the fixed rod 71 and fixedly connected to the fixed rod 71 .

[0037] When the blocking plate 11 rotates, it can drive the fixed rod 71 to rotate, thereby driving the stirring rod 72 outside the fixed rod 71 to rotate, so as to stir the slurry inside the mixing barrel 3, thereby achieving sufficient mixing of the slurry and avoiding sedimentation and segregation of the slurry during transportation.

[0038] Furthermore, when the mixing drum 3 and the buffer funnel 4 continuously rotate in opposite directions, this counter-rotation not only promotes the centrifugal motion of the slurry, but also enhances the mixing effect of the slurry within the mixing drum 3, thereby reducing particle sedimentation and stratification in the slurry. The slurry is evenly distributed to every corner of the mixing drum 3 under the action of centrifugal force, while the continuous stirring of the stirring mechanism 7 further ensures the fineness and uniformity of the slurry.

[0039] It is worth noting that the first drive mechanism 5 and the second drive mechanism 6 are both existing technologies, which drive the gears to rotate by the motor, thereby driving the gear ring to rotate, so that the mixing barrel 3 and the buffer funnel 4 can rotate, or any driving device that can drive the mixing barrel 3 and the buffer hopper to rotate can be used. The specific structure of the first drive mechanism 5 and the second drive mechanism 6 is not shown in the figure.

[0040] When unloading is required, the electric push rod 10 is retracted to drive the sealing plate 11 downward, thereby opening the bottom outlet of the mixing drum 3. At this time, the fully mixed slurry can enter the buffer funnel 4 through the bottom of the mixing drum 3. The turbine guide member 9 includes a central shaft 93 and multiple guide paddles 94. The central shaft 93 is located in the middle of the buffer funnel 4. The multiple guide paddles 94 are evenly fixed on the outer wall of the central shaft 93 along the circumferential direction. The outer walls of the multiple guide paddles 94 away from the central shaft 93 are fixedly connected to the inner wall of the buffer funnel 4.

[0041] The plurality of guide paddles 94 divide the interior of the buffer funnel 4 into a plurality of guide troughs 95 , and all the guide paddles 94 are arranged at an angle.

[0042] A discharge pipe 12 is fixedly connected to the bottom of the buffer funnel 4, and a spiral auger 13 is fixedly connected inside the discharge pipe 12. The spiral auger 13 includes a central discharge pipe 131 and a spiral blade 132. The spiral blade 132 is fixed inside the discharge pipe 12. The central discharge pipe 131 is fixedly arranged in the middle of the spiral blade 132, and the bottom of the central discharge pipe 131 is fixedly connected to a spiral discharge tunnel.

[0043] Through the provision of multiple guide paddles 94, the slurry enters the buffer funnel 4 and is then diverted to the multiple guide troughs 95. At this time, the buffer funnel 4 continues to rotate, thereby guiding the slurry to flow to the discharge pipe 12. Among them, when the slurry flows from the mixing barrel 3 into the buffer funnel 4, the guide paddles 94 can effectively disperse the impact force of the slurry, preventing the slurry from directly impacting the bottom or side walls of the buffer funnel 4, thereby reducing the eddy currents and turbulence of the slurry and ensuring that the slurry can flow smoothly and orderly along the inner wall of the buffer funnel 4. In addition, the uniform distribution of the guide paddles 94 also promotes the uniform distribution of the slurry in the buffer funnel 4, further improving the uniformity and fineness of the slurry. The design of the spiral discharge tunnel further enhances the slurry conveying effect.

[0044] When the slurry enters the spiral auger 13 area through the discharge pipe 12, the spiral blades 132 push the slurry downward along the central discharge pipe 131. At the same time, the rotation of the spiral blades 132 can effectively prevent the slurry from clogging inside the discharge pipe 12. Under the guidance of the spiral blades 132, the slurry is smoothly discharged along the spiral discharge tunnel, ensuring the continuity and stability of the filling and discharging process. The setting of the spiral discharge tunnel is the same as the spiral channel structure in a uniform filling and discharging device for filling goaf disclosed in the existing patent announcement number CN218030280U. When the slurry enters the discharge pipe 12, it can be discharged through the central discharge pipe 131 and the spiral blades 132 respectively. In addition, the second drive mechanism 6 drives the buffer funnel 4 and the discharge pipe 12 to rotate, so that the slurry can be spirally thrown out to the goaf for filling more quickly, thereby realizing the spiral outward filling of the filling trajectory in the goaf. The entire discharging process is smooth and efficient, ensuring the uniformity and stability of the slurry filling in the goaf. The present invention allows for sufficient stirring and mixing of the slurry before it is discharged, ensuring that the slurry maintains an optimal flow state throughout the filling process, thereby avoiding problems such as uneven filling or blockage caused by unstable slurry flow or excessive pressure. Furthermore, the first and second drive mechanisms 5 and 6 can flexibly adjust the filling trajectory and speed based on the actual conditions of the goaf, achieving more efficient and accurate filling operations.

[0045] The scraping mechanism 8 includes an annular movable plate 81, a spiral scraper 82, a positioning ring 83 and multiple buffer connectors 84. The annular movable plate 81 is sealingly and slidingly connected to the outside of the connector 1, and the outer wall of the annular movable plate 81 is in conflict with the inner wall of the mixing barrel 3. The spiral scraper 82 is fixedly connected to the bottom of the annular movable plate 81, and the outer wall of the spiral scraper 82 is in conflict with the inner wall of the mixing barrel 3. The positioning ring 83 is slidingly connected to the inside of the mixing barrel 3, and the top of the positioning ring 83 is fixedly connected to the bottom of the spiral scraper 82. Multiple buffer connectors 84 are evenly fixed on the inner top wall of the mixing barrel 3 along the circumferential direction. An annular groove 85 is provided at the top of the annular movable plate 81, and the bottoms of all buffer connectors 84 extend into the inside of the annular groove 85 and are rotatably connected to the annular groove 85.

[0046] The sealing plate 11 rises to the mixing barrel 3 and contacts the positioning ring 83, thereby pushing the spiral scraper 82 and the annular movable plate 81 on its top to rise. When the annular movable plate 81 rises, the buffer connecting member 84 is squeezed for compression. The buffer connecting member 84 includes a fixed barrel 86, a movable column 87, a circular plate 88 and a spring 89. The fixed barrel 86 is fixed on the inner top wall of the mixing barrel 3, the movable column 87 is slidably connected to the inside of the fixed barrel 86, the circular plate 88 is fixedly connected to the bottom of the movable column 87, the circular plate 88 is slidably connected to the annular groove 85, the spring 89 is located in the fixed barrel 86, and the upper and lower ends of the spring 89 are respectively in conflict with the fixed barrel 86 and the movable column 87.

[0047] When the annular movable plate 81 moves upward, it can drive the circular plate 88 inside the annular groove 85 to move upward, thereby driving the movable column 87 to move upward along the inside of the fixed cylinder 86, thereby squeezing the spring 89 and compressing the spring 89. At this time, as the sealing plate 11 rotates, it can drive the positioning ring 83 and the spiral scraper 82 on its top to rotate, so that the spiral scraper 82 performs spiral scraping along the inner wall of the mixing cylinder 3, ensuring that the material attached to the inner wall of the mixing cylinder 3 can be completely scraped off, preventing the slurry from forming lumps or accumulation on the inner wall of the mixing cylinder 3, ensuring that the inside of the mixing cylinder 3 is always kept clean, and further improving the mixing uniformity of the slurry.

[0048] When the spiral scraper 82 rotates, the annular movable plate 81 on its top rotates synchronously. In order to avoid interference between the buffer connector 84 and the annular movable plate 81, an annular groove 85 is provided. When the annular movable plate 81 rotates, the annular groove 85 is slidably connected with multiple buffer connectors 84. When the blocking plate 11 moves downward, the spring 89 loses the extrusion force from the annular movable plate 81 and resets, thereby pushing the movable column 87 and the circular plate 88 at its bottom to move downward, so that the entire scraper mechanism 8 moves downward along the inner wall of the mixing barrel 3, thereby scraping off the slurry attached to the inner wall of the mixing barrel 3.

[0049] At this time, the design of the annular groove 85 not only prevents the buffer connector 84 from interfering with the annular movable plate 81, but also ensures the smooth movement of the scraping mechanism on the inner wall of the mixing drum 3. This not only improves the scraping efficiency, but also ensures that the scraping mechanism 8 fits tightly against the inner wall of the mixing drum 3, reducing the possibility of slurry residue.

[0050] It is worth noting that to prevent the spiral scraper 82 from bending when the positioning ring 83 squeezes it, the spiral scraper 82 in the present invention is made of a rigid material. Furthermore, this rigid material has excellent wear and corrosion resistance, maintaining its performance even under prolonged contact with slurry, further enhancing the reliability and durability of the entire device.

[0051] An installation groove 91 is opened in the middle of the turbine guide member 9, and the electric push rod 10 is installed in the installation groove 91. The output end of the electric push rod 10 is fixedly connected to a slide rod 92. The slide rod 92 slides axially in a sealed manner with the installation groove 91, and the slide rod 92 is fixedly connected to the bottom of the sealing plate 11.

[0052] When the electric push rod 10 is working, its output end pushes the slide bar 92 to slide axially in the installation groove 91, thereby driving the blocking plate 11 to slide at the bottom outlet of the mixing drum 3 to open and close the mixing drum 3. This design not only ensures the uniformity of slurry feeding, but also improves the control accuracy and stability of the device. In addition, the cooperation between the slide bar 92 and the installation groove 91 can prevent external slurry from entering the installation groove 91 and affecting the use of the electric push rod 10.

[0053] Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and protection scope of the present application, and such modifications or equivalent substitutions should also be deemed to fall within the protection scope of the present application.

Claims

1. A uniform filling and discharging device for filling a goaf, comprising a connector (1) and a discharging barrel (2) fixedly sleeved on the outside of the connector (1), characterized in that: A mixing barrel (3) is provided inside the discharge barrel (2), the mixing barrel (3) is movably sleeved with the discharge barrel (2), a buffer funnel (4) is movably sleeved on the outside of the mixing barrel (3), a first driving mechanism (5) for driving the mixing barrel (3) to rotate and a second driving mechanism (6) for driving the buffer funnel (4) to rotate are provided inside the discharge barrel (2), the mixing barrel (3) and the buffer funnel (4) rotate in opposite directions, and a stirring mechanism (7) for stirring the slurry and a stirring mechanism (8) for stirring the mixing barrel (3) are provided inside the mixing barrel (3). ) a scraping mechanism (8) for scraping off the slurry attached to the inner wall of the mixing barrel (3); a turbine guide member (9) is fixedly connected to the inside of the buffer funnel (4); an electric push rod (10) is installed in the middle of the turbine guide member (9); the output shaft of the electric push rod (10) faces the mixing barrel (3); a sealing plate (11) is slidably connected to the bottom of the mixing barrel (3); the bottom of the sealing plate (11) is fixedly connected to the output shaft of the electric push rod (10); the stirring mechanism (7) is installed on the top of the sealing plate (11); and the scraping mechanism (8) is installed on the inner wall of the mixing barrel (3); When the electric push rod (10) pushes the blocking plate (11) upward to the inside of the mixing barrel (3), the blocking plate (11) contacts the scraping mechanism (8) and drives the scraping mechanism (8) to rotate; The scraping mechanism (8) includes an annular movable plate (81), a spiral scraping member (82), a positioning ring (83) and a plurality of buffer connecting members (84), wherein the annular movable plate (81) is sealingly and slidingly connected to the outside of the connector (1), and the outer wall of the annular movable plate (81) is in conflict with the inner wall of the mixing barrel (3), the spiral scraping member (82) is fixedly connected to the bottom of the annular movable plate (81), and the outer wall of the spiral scraping member (82) is in conflict with the inner wall of the mixing barrel (3), the positioning ring (83) is slidingly connected to the inside of the mixing barrel (3), and the top of the positioning ring (83) is fixedly connected to the bottom of the spiral scraping member (82), and a plurality of buffer connecting members (84) are evenly fixed on the inner top wall of the mixing barrel (3) along the circumferential direction, the top of the annular movable plate (81) is provided with an annular groove (85), and the bottoms of all the buffer connecting members (84) extend into the inside of the annular groove (85) and are rotatably connected to the annular groove (85).

2. The uniform filling and discharging device for filling goaf according to claim 1, characterized in that: The bottom of the buffer funnel (4) is fixedly connected to a discharge pipe (12), the inside of the discharge pipe (12) is fixedly connected to a spiral auger (13), the spiral auger (13) comprises a central discharge pipe (131) and a spiral blade (132), the spiral blade (132) is fixed inside the discharge pipe (12), the central discharge pipe (131) is fixedly arranged in the middle of the spiral blade (132), and the bottom of the central discharge pipe (131) is fixedly connected to a spiral discharge tunnel.

3. The uniform filling and discharging device for filling goaf according to claim 1 is characterized in that: The stirring mechanism (7) comprises a fixed rod (71) and a plurality of stirring rods (72), wherein the fixed rod (71) is fixedly arranged in the middle of the blocking plate (11), and the plurality of stirring rods (72) are evenly arranged on both sides of the outside of the fixed rod (71) and are fixedly connected to the fixed rod (71).

4. The uniform filling and discharging device for filling goaf according to claim 1 is characterized in that: A mounting groove (91) is provided in the middle of the turbine guide member (9), the electric push rod (10) is installed in the mounting groove (91), and a slide rod (92) is fixedly connected to the output end of the electric push rod (10), the slide rod (92) and the mounting groove (91) are axially sealed and slidable, and the slide rod (92) is fixedly connected to the bottom of the sealing plate (11).

5. The uniform filling and discharging device for filling goaf according to claim 4 is characterized in that: The buffer connection member (84) includes a fixed cylinder (86), a movable column (87), a circular plate (88) and a spring (89), wherein the fixed cylinder (86) is fixed on the inner top wall of the mixing cylinder (3), the movable column (87) is slidably connected to the inside of the fixed cylinder (86), the circular plate (88) is fixedly connected to the bottom of the movable column (87), the circular plate (88) is slidably connected to the annular groove (85), and the spring (89) is located in the fixed cylinder (86), and the upper and lower ends of the spring (89) are respectively in conflict with the fixed cylinder (86) and the movable column (87).

6. The uniform filling and discharging device for filling goaf according to claim 1, characterized in that: The turbine guide member (9) comprises a central shaft (93) and a plurality of guide paddles (94), wherein the central shaft (93) is located in the middle of the buffer funnel (4), and the plurality of guide paddles (94) are evenly fixed on the outer wall of the central shaft (93) along the circumferential direction, and the outer walls of the plurality of guide paddles (94) away from the central shaft (93) are fixedly connected to the inner wall of the buffer funnel (4).

7. The uniform filling and discharging device for filling goaf according to claim 6, characterized in that: The plurality of guide paddles (94) divide the interior of the buffer funnel (4) into a plurality of guide troughs (95), and all of the guide paddles (94) are arranged at an angle.

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